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Valverde P, Fernández J, Buenaño E, González-Avella J, Cosenza M. Controlling systemic corruption through group size and salary dispersion of public servants. Heliyon 2024; 10:e25148. [PMID: 38333797 PMCID: PMC10850891 DOI: 10.1016/j.heliyon.2024.e25148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 01/17/2024] [Accepted: 01/22/2024] [Indexed: 02/10/2024] Open
Abstract
We investigate an agent-based model for the emergence of corruption in public contracts. There are two types of agents: business people and public servants. Both business people and public servants can adopt two strategies: corrupt or honest behavior. Interactions between business people and public servants take place through defined payoff rules. Either type of agent can switch between corrupt or honest strategies by comparing their payoffs after interacting. We measure the level of corruption in the system by the fractions of corrupt and honest agents for asymptotic times. We study the effects of the group size of the interacting agents, the dispersion with respect to the average salary of the public servants, and a parameter representing the institutional control of corruption. We characterize the fractions of honest and corrupt agents as functions of these variables. We construct phase diagrams for the level of corruption in the system in terms of these variables, where three collective states can be distinguished: i) a phase where corruption dominates; ii) a phase where corruption remains in less than 50% of the agents; and iii) a phase where corruption disappears. Our results indicate that a combination of large group sizes of interacting servants and business people and small dispersion of the salaries of public servants, contributes to the decrease of systemic corruption in public contracts.
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Affiliation(s)
- P. Valverde
- Pontificia Universidad Católica del Ecuador, Facultad de Ciencias Exactas y Naturales, Quito, Ecuador
| | - J. Fernández
- Pontificia Universidad Católica del Ecuador, Facultad de Ciencias Exactas y Naturales, Quito, Ecuador
| | - E. Buenaño
- Pontificia Universidad Católica del Ecuador, Facultad de Ciencias Exactas y Naturales, Quito, Ecuador
| | - J.C. González-Avella
- Instituto de Física Interdisciplinar y Sistemas Complejos, UIB-CSIC, Palma de Mallorca, Spain
- Advanced Programming Solutions SL, Palma de Mallorca, Spain
| | - M.G. Cosenza
- Grupo Interdisciplinario de Sistemas Complejos, Escuela de Ciencias Físicas y Nanotecnología, Universidad Yachay Tech, Urcuquí, Ecuador
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Urbinati F, Jiménez-Siles L, Rocha-de-Lossada C, Valvecchia G, Barraquer-Compte E, Fernández J. Humanitarian missions and visual outcomes in cataract surgery: A literature review. Arch Soc Esp Oftalmol (Engl Ed) 2024:S2173-5794(24)00015-X. [PMID: 38309656 DOI: 10.1016/j.oftale.2024.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 12/01/2023] [Indexed: 02/05/2024]
Abstract
The limited accessibility to ophthalmological services in remote regions of developing countries poses a significant challenge in visual healthcare. Cataracts and refractive errors are prominent causes of visual impairment, and surgery, despite being an efficient option, faces barriers in developing countries due to financial and geographical constraints. Humanitarian missions play a vital role in addressing this issue. The improvement in the accuracy of calculating IOL power through techniques such as keratometry and biometry is a fundamental step towards optimizing surgical outcomes and the quality of life for patients in these underserved regions. In this context, the consideration of keratometry and immersion ultrasound biometry as preoperative assessment standards in cataract surgeries in developing countries is presented as a pertinent and advisable strategy.
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Affiliation(s)
- F Urbinati
- Facultad de Medicina, Universidad de Málaga, Málaga, Spain
| | | | - C Rocha-de-Lossada
- Hospital Regional Universitario de Málaga, Málaga, Spain; Fundación Elena Barraquer, Barcelona, Spain; Departamento de Oftalmología, Vithas Málaga, Málaga, Spain; Qvision, VITHAS Hospital, Almería, Spain; Departamento de Cirugía, Área de Oftalmología, Universidad de Sevilla, Sevilla, Spain.
| | - G Valvecchia
- Fundación Elena Barraquer, Barcelona, Spain; Clínica de Ojos Quilmes, Quilmes, Buenos Aires, Argentina
| | - E Barraquer-Compte
- Fundación Elena Barraquer, Barcelona, Spain; Centro de Oftalmología Barraquer, Barcelona, Spain
| | - J Fernández
- Fundación Elena Barraquer, Barcelona, Spain; Qvision, VITHAS Hospital, Almería, Spain
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3
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Rodríguez-Calvo-de-Mora M, Rocha-de-Lossada C, Rodríguez-Vallejo M, Zamora-de-la-Cruz D, Fernández J. Retinal detachment after refractive lens exchange: A narrative review. Arch Soc Esp Oftalmol (Engl Ed) 2023; 98:507-520. [PMID: 37364678 DOI: 10.1016/j.oftale.2023.06.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 06/01/2023] [Indexed: 06/28/2023]
Abstract
Refractive lens exchange (RLE) allows to correct ametropias and presbyopia by replacing the crystalline lens with an extended depth of focus or multifocal intraocular lens (IOL). Retinal detachment (RD) is one of the most serious adverse events after RLE. This study aimed to review the evidence related to the risk of RD after RLE and clinical outcomes. A search using PubMed and a snowball search approach was conducted to identify articles and case reports. According to the literature, the risks of RD should be considered in patients <60 years old with axial lengths >23 mm. Only nine articles reported visual acuity (VA) after RD in RLE, and only 25% of eyes had a VA > 20/40. Considering that the decrease in VA might be uniform for all types of IOLs after RD, surgeons should focus on selecting the patient to prevent RD rather than on a particular IOL optical design based on the potential risk of DR.
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Affiliation(s)
- M Rodríguez-Calvo-de-Mora
- Qvision, Departamento de Oftalmología, VITHAS Almería Hospital, Almería, Spain; Departamento de Oftalmología, VITHAS Málaga, Málaga, Spain; Departamento de Oftalmología, Hospital Regional Universitario Málaga, Málaga, Spain.
| | - C Rocha-de-Lossada
- Qvision, Departamento de Oftalmología, VITHAS Almería Hospital, Almería, Spain; Departamento de Oftalmología, VITHAS Málaga, Málaga, Spain; Departamento de Oftalmología, Hospital Regional Universitario Málaga, Málaga, Spain; Departamento de Cirugía, Área de Oftalmología, Universidad de Sevilla, Sevilla, Spain
| | - M Rodríguez-Vallejo
- Qvision, Departamento de Oftalmología, VITHAS Almería Hospital, Almería, Spain
| | - D Zamora-de-la-Cruz
- Departamento de Segmento Anterior, Instituto de Oftalmología Fundación Conde de Valenciana, Mexico City, Mexico; Departamento de Segmento Anterior, Hospital Mexiquense de Salud Visual, ISEM, Naucalpan de Juárez, Mexico
| | - J Fernández
- Qvision, Departamento de Oftalmología, VITHAS Almería Hospital, Almería, Spain
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Pablo-Marcos D, Siller M, Agüero J, Álvarez-Justel A, García-Fernández S, de la Fuente SV, Goicoechea P, Rodríguez-Lozano J, Ocampo-Sosa A, Lucas-Fernández J, Fariñas MC, Fernández J, Fraile-Ribot PA, Aracil B, Oteo-Iglesias J, Calvo-Montes J. Are GES carbapenemases underdiagnosed? An allelic discrimination assay for their accurate detection and differentiation. J Microbiol Methods 2023; 207:106694. [PMID: 36871870 DOI: 10.1016/j.mimet.2023.106694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 02/28/2023] [Accepted: 02/28/2023] [Indexed: 03/07/2023]
Abstract
GES (Guiana Extended Spectrum) carbapenemases belong to "minor class A carbapenemases" and its prevalence could be underestimated due to the lack of specific tests. The aim of this study was to develop an easy PCR method to differentiate between GES β-lactamases with or without carbapenemase activity, based on an allelic discrimination system of SNPs that encode E104K and G170S mutations, without need of sequencing. Two pair of primers and Affinity Plus probes, labeled with different fluorophores; FAM/IBFQ and YAK/IBFQ, were designed for each one of the SNPs. This allelic discrimination assay allows to detect in real time the presence of all type of GES- β-lactamases, being able to differentiate between carbapenemases and extended-spectrum β-lactamase (ESBL), through a quick PCR test that avoid costly sequencing approaches and could help to decrease the current underdiagnosis of minor carbapenemases that scape of phenotypic screenings.
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Affiliation(s)
- D Pablo-Marcos
- Servicio de Microbiología, Hospital Universitario Marqués de Valdecilla-IDIVAL, Santander, Spain.
| | - M Siller
- Servicio de Microbiología, Hospital Universitario Marqués de Valdecilla-IDIVAL, Santander, Spain
| | - J Agüero
- Servicio de Microbiología, Hospital Universitario Marqués de Valdecilla-IDIVAL, Santander, Spain
| | - A Álvarez-Justel
- Servicio de Microbiología, Hospital Universitario Marqués de Valdecilla-IDIVAL, Santander, Spain
| | - S García-Fernández
- Servicio de Microbiología, Hospital Universitario Marqués de Valdecilla-IDIVAL, Santander, Spain
| | - S Velasco de la Fuente
- Servicio de Microbiología, Hospital Universitario Marqués de Valdecilla-IDIVAL, Santander, Spain
| | - P Goicoechea
- Servicio de Microbiología, Hospital Universitario Marqués de Valdecilla-IDIVAL, Santander, Spain
| | - J Rodríguez-Lozano
- Servicio de Microbiología, Hospital Universitario Marqués de Valdecilla-IDIVAL, Santander, Spain
| | - A Ocampo-Sosa
- Servicio de Microbiología, Hospital Universitario Marqués de Valdecilla-IDIVAL, Santander, Spain
| | - J Lucas-Fernández
- Servicio de Microbiología, Hospital Universitario Ramón y Cajal e Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, Spain
| | - M C Fariñas
- Servicio de Enfermedades Infecciosas, Hospital Universitario Marqués de Valdecilla-IDIVAL, Santander, Spain; CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
| | - J Fernández
- Servicio de Microbiología, Hospital Universitario Central de Asturias. Grupo de Microbiología Traslacional, ISPA, s, Asturias, Spain; CIBER de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
| | - P A Fraile-Ribot
- Servicio de Microbiología, Hospital Universitario Son Espases e Instituto de Investigación Sanitaria Illes Balears (IdISBa), Palma de Mallorca, Spain; CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
| | - B Aracil
- Laboratorio de Referencia e Investigación en Resistencia a Antibióticos e Infecciones Relacionadas con la Asistencia Sanitaria, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain; CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
| | - J Oteo-Iglesias
- Laboratorio de Referencia e Investigación en Resistencia a Antibióticos e Infecciones Relacionadas con la Asistencia Sanitaria, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain; CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
| | - J Calvo-Montes
- Servicio de Microbiología, Hospital Universitario Marqués de Valdecilla-IDIVAL, Santander, Spain; CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
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Iparraguirre I, García-Revilla S, Azkargorta J, Fernández J, Balda R. Spectro-temporal behavior of dye-based solid-state random lasers under a picosecond pumping regime: Part III. Opt Express 2023; 31:7159-7166. [PMID: 36859852 DOI: 10.1364/oe.482086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 01/10/2023] [Indexed: 06/18/2023]
Abstract
In two recent works, the authors have investigated the spectro-temporal properties of the random laser emission from solid state dye-doped powders in picosecond pumping regime. Each emission pulse consists, both above and below threshold, in a collection of narrow peaks of a spectro-temporal width at the theoretical limit (ΔωΔt≅1). The distribution of path lengths traveled inside the diffusive active medium by photons that can be amplified by stimulated emission explains this behavior, as demonstrated by a simple theoretical model developed by the authors. The aim of the present work is, first, to develop an implemented model that does not depend on fitting parameters, and which is compatible with the energetic and spectro-temporal properties of the material; and second, to get knowledge about the spatial properties of the emission. The transverse coherence size of each emitted photon packet has been measured; and in addition, we have shown the existence of spatial fluctuations of the emission of these materials, as our model predicts.
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Barraquer-Compte E, Rocha-de-Lossada C, Ferreiro-Vazquez T, Valvecchia G, Fernández J. Logistics description of a high yield cataract surgery non-profitable expedition. Arch Soc Esp Oftalmol (Engl Ed) 2023; 98:193-198. [PMID: 36801255 DOI: 10.1016/j.oftale.2022.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 12/17/2022] [Indexed: 02/17/2023]
Abstract
PURPOSE To describe the logistics and methodology of a high yield surgical non-profitable campaign. METHODS A descriptive study based on previous non-profitable campaigns dedicated to cataract surgery. RESULTS The method is based on planification, finance acquisition, volunteer support, foreign affairs with the collaborating country where the surgeries are going to be performed, team organization, and overall, summoning all the stated items to materialize a global humanitarian campaign to eradicate cataracts by clinical and surgical procedures. CONCLUSIONS Blindness due to cataracts can be over-ruled. We consider that through our planification and methodology, other organizations may acquire some knowledge to improve their methodology and carry out similar volunteering surgical campaigns. Planification, coordination, financial aid, determination, and a strong will power are altogether compulsory for a successful non-profitable surgical campaign.
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Affiliation(s)
- E Barraquer-Compte
- Fundación Elena Barraquer, Barcelona, Spain; Centro de Oftalmología Barraquer, Barcelona, Spain
| | - C Rocha-de-Lossada
- Fundación Elena Barraquer, Barcelona, Spain; Qvision, VITHAS Hospital, Almería, Spain; Hospital Regional Universitario de Málaga, Málaga, Spain; Departamento de Cirugía, Área de Oftalmología, Universidad de Sevilla, Sevilla, Spain.
| | | | - G Valvecchia
- Fundación Elena Barraquer, Barcelona, Spain; Clínica de Ojos Quilmes, Quilmes, Buenos Aires, Argentina
| | - J Fernández
- Fundación Elena Barraquer, Barcelona, Spain; Qvision, VITHAS Hospital, Almería, Spain
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Illia MF, Greco M, Cosacow C, Sahar J, Rivero Equiza T, Fernández J, Bastianello MJ. Acute disseminated intravascular coagulation secondary to 177Lu-DOTATATE treatment in neuroendocrine tumor patients. Rev Esp Med Nucl Imagen Mol 2023; 42:67-68. [PMID: 36513327 DOI: 10.1016/j.remnie.2022.09.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 09/02/2022] [Indexed: 12/14/2022]
Affiliation(s)
- M F Illia
- Departamento de Clínica Médica, Hospital Universitario CEMIC, Buenos Aires, Argentina.
| | - M Greco
- Departamento de Oncología Clínica, Hospital Universitario CEMIC, Buenos Aires, Argentina
| | - C Cosacow
- Departamento de Clínica Médica, Hospital Universitario CEMIC, Buenos Aires, Argentina
| | - J Sahar
- Departamento de Hematología, Hospital Universitario CEMIC, Buenos Aires, Argentina
| | - T Rivero Equiza
- Departamento de Hematología, Hospital Universitario CEMIC, Buenos Aires, Argentina
| | - J Fernández
- Departamento de Hematología, Hospital Universitario CEMIC, Buenos Aires, Argentina
| | - M J Bastianello
- Sección de Imágenes Moleculares y Terapia Metabólica, Hospital Universitario CEMIC, Buenos Aires, Argentina
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Illia M, Greco M, Cosacow C, Sahar J, Rivero Equiza T, Fernández J, Bastianello M. Coagulación intravascular diseminada secundaria a tratamiento con 177Lu-DOTATATE en paciente con tumor neuroendocrino. Rev Esp Med Nucl Imagen Mol 2023. [DOI: 10.1016/j.remn.2022.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Liñeira del Río JM, Rial R, López ER, Fernández J. Tribological enhancement using Mn3O4-Graphene nanocomposites as additives for potential transmission fluids of electric vehicles. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Fernández J. Nuevos táxones animales descritos en la península ibérica y Macaronesia desde 1994 (XXII). Graellsia 2022. [DOI: 10.3989/graellsia.2022.v78.356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Esta nueva lista incluye en 869 táxones nuevos aparecidos en 471 referencias bibliográficas publicadas principalmente entre 2018 y 2021. Comprende 684 especies, 82 géneros o subgéneros, 54 categorías supragenéricas, 47 subespecies y 2 categorías infrasubespecíficas procedentes del área considerada.
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Iparraguirre I, Azkargorta J, García-Revilla S, Fernández J, Balda R. Spectro-temporal behavior of dye-based solid-state random lasers under picosecond pumping regime: part II. Opt Express 2022; 30:26655-26663. [PMID: 36236853 DOI: 10.1364/oe.462065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 06/21/2022] [Indexed: 06/16/2023]
Abstract
In a very recent work the spectral and temporal properties of the random laser emission from solid state dye-doped powders have been investigated by the authors in picosecond pumping regime. The emission shows within each pulse, peaks of more intensity than background, and of a spectro-temporal width at the theoretical limit (ΔωΔt≅1), even in conditions well below the threshold. The relationship between the distribution of paths lengths traveled by photons inside the active medium, and the amplification by stimulated emission explains this behavior. The aim of the present work is to propose a simple model that, in addition to explaining these characteristics of the emission, is compatible with the energetic properties of the material. Particularly interesting is the behavior predicted by the model for the emission decay in sub-threshold conditions, as well as its very good fit with the experimental measurements and its comparison with the one found in low dispersive media, that shows the decisive effect of scattering. The set of results is hardly compatible with a mode structure.
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Paredes X, Liñeira del Río JM, Gonçalves DEP, Guimarey MJG, Comuñas MJP, Seabra JHO, Fernández J. Thermophysical and Tribological Properties of Highly Viscous Biolubricants. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c00915] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xavier Paredes
- Laboratory of Thermophysical and Tribological Properties, NaFoMat Group, Department of Applied Physics, Faculty of Physics and Institute of Materials (iMATUS), University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
- TERMOCAL Research Group, Research Institute on Bioeconomy, Escuela de Ingenierías Industriales, Universidad de Valladolid, Paseo del Cauce 59, Valladolid 47011, Spain
| | - José M. Liñeira del Río
- Laboratory of Thermophysical and Tribological Properties, NaFoMat Group, Department of Applied Physics, Faculty of Physics and Institute of Materials (iMATUS), University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
- INEGI, Universidade do Porto, Faculdade de Engenharia, Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal
| | - David E. P. Gonçalves
- INEGI, Universidade do Porto, Faculdade de Engenharia, Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal
| | - María J. G. Guimarey
- Laboratory of Thermophysical and Tribological Properties, NaFoMat Group, Department of Applied Physics, Faculty of Physics and Institute of Materials (iMATUS), University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
- Department of Design and Engineering, Faculty of Science & Technology, Bournemouth University, Talbot Campus, Poole BH12 5BB, United Kingdom
| | - María J. P. Comuñas
- Laboratory of Thermophysical and Tribological Properties, NaFoMat Group, Department of Applied Physics, Faculty of Physics and Institute of Materials (iMATUS), University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Jorge H. O. Seabra
- FEUP, Universidade do Porto, Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal
| | - Josefa Fernández
- Laboratory of Thermophysical and Tribological Properties, NaFoMat Group, Department of Applied Physics, Faculty of Physics and Institute of Materials (iMATUS), University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
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Fernández J, Alberich S, Zorrilla I, González-Ortega I, López M, Pérez-Solà V, Vieta E, González-Pinto A, Saiz P. Altered Executive Function in Suicide Attempts. Eur Psychiatry 2022. [PMCID: PMC9566208 DOI: 10.1192/j.eurpsy.2022.343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Introduction Executive function organizes and directs behaviour but alterations in this cognitive domain can lead to inaccurate perception, interpretation and response to environmental information, which could be a risk factor for suicide. Objectives To explore executive function performance of depressed recent suicide attempters in comparison to depressed past suicide attempters, depressed non-attempters and healthy controls. Methods
96 participants from the Psychiatry Department of the Araba University Hospital-Santiago were recruited as follows: 20 patients with a recent suicide attempt (<30days) diagnosed with a Major Depressive Disorder (MDD), 33 MDD patients with history of attempted suicide, 23 non-attempter MDD patients and 20 healthy controls. All participants underwent a clinical interview and neuropsychological assessment on executive function with the Wisconsin Sorting Card Test. Backward multiple regressions were performed adjusting for significant confounding variables. For group comparisons ANOVA test and Bonferroni post hoc test were performed with p<0.05 significance level. Results
Patient groups did not differ regarding severity of depression. All patient groups performed significantly worse than healthy controls on executive function. Adjusted comparisons between patient groups indicated that recent suicide attempters had a poorer performance in this cognitive domain in comparison to both depressed lifetime attempters and depressed non-attempters (B=0.296, p=0.019 and B=0.301, p=0.028 respectively). Conclusions Executive function performance is altered in recent suicide attempts. As impaired executive function can be a risk factor for suicide, preventive interventions on suicide should focus on its assessment and rehabilitation. Disclosure No significant relationships.
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Mendo T, Mendo J, Ransijn JM, Gomez I, Gil-Kodaka P, Fernández J, Delgado R, Travezaño A, Arroyo R, Loza K, McCann P, Crowe S, Jones EL, James MA. Assessing discards in an illegal small-scale fishery using fisher-led reporting. Rev Fish Biol Fish 2022; 32:963-974. [PMID: 35370370 PMCID: PMC8958935 DOI: 10.1007/s11160-022-09708-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 02/28/2022] [Indexed: 06/14/2023]
Abstract
UNLABELLED About a third of all marine fish in the world are caught in Small-Scale Fisheries (SSF). SSF are increasingly recognised as essential for food security and livelihoods for vulnerable and economically fragile communities globally. Although individual SSF vessels are usually perceived as having little impact on the ecosystem, the cumulative impact of gear type and number of vessels may be substantial. Bottom trawling is a common fishing method that can greatly influence the marine ecosystem by damaging the seafloor and generating high levels of discards. However, appropriate sampling coverage using on-board observer programmes to collect these data from SSF are rare, as they are expensive and pose logistical constraints. A mobile App was used to assess whether self-reporting by fishers could provide reliable fine-scale information on fishing effort and discards over time in an illegal shrimp trawling fishery in northern Peru. Maps depicting the spatial distribution of trawling effort and the proportion of discards from observers and fishers were compared using the Similarity in Means (SIM) Index, which ranges from 0 when spatial patterns differ completely to 1 when spatial patterns are very similar. High levels of agreement between spatio-temporal patterns of effort (SIM Index = 0.81) and discards (0.96) were found between fisher and observer maps. Moreover, far greater spatial coverage was accomplished by fishers, suggesting that self-reporting via an App represents a useful approach to collect reliable fisheries data as an initial step for effective monitoring and management of these fisheries. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s11160-022-09708-9.
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Affiliation(s)
- T. Mendo
- Scottish Oceans Institute, University of St Andrews, East Sands, Fife, KY16 8LB UK
| | - J. Mendo
- Facultad de Pesquería, Universidad Nacional Agraria La Molina, Av. La Molina s/n, Lima, Peru
| | - J. M. Ransijn
- Scottish Oceans Institute, University of St Andrews, East Sands, Fife, KY16 8LB UK
| | - I. Gomez
- Facultad de Pesquería, Universidad Nacional Agraria La Molina, Av. La Molina s/n, Lima, Peru
| | - P. Gil-Kodaka
- Facultad de Pesquería, Universidad Nacional Agraria La Molina, Av. La Molina s/n, Lima, Peru
| | - J. Fernández
- Facultad de Pesquería, Universidad Nacional Agraria La Molina, Av. La Molina s/n, Lima, Peru
| | - R. Delgado
- Facultad de Pesquería, Universidad Nacional Agraria La Molina, Av. La Molina s/n, Lima, Peru
| | - A. Travezaño
- Facultad de Pesquería, Universidad Nacional Agraria La Molina, Av. La Molina s/n, Lima, Peru
| | - R. Arroyo
- Facultad de Pesquería, Universidad Nacional Agraria La Molina, Av. La Molina s/n, Lima, Peru
| | - K. Loza
- Facultad de Pesquería, Universidad Nacional Agraria La Molina, Av. La Molina s/n, Lima, Peru
| | - P. McCann
- IT Services, University of St. Andrews, Walter Bower House, Guardbridge, KY16 0US UK
| | - S. Crowe
- IT Services, University of St. Andrews, Walter Bower House, Guardbridge, KY16 0US UK
| | - E. L. Jones
- Biomathematics and Statistics Scotland, Peter Guthrie Tait Road, Edinburgh, UK
| | - M. A. James
- Scottish Oceans Institute, University of St Andrews, East Sands, Fife, KY16 8LB UK
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Iparraguirre I, Azkargorta J, García-Revilla S, Fernández J, Balda R. Spectro-temporal behavior of dye-based solid-state random lasers under picosecond pumping regime. Opt Express 2022; 30:9674-9684. [PMID: 35299388 DOI: 10.1364/oe.451017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Accepted: 02/09/2022] [Indexed: 06/14/2023]
Abstract
In this work, the spectral and temporal properties of the random laser emission from dye-doped solid state powders are investigated in picosecond pumping regime. Ultrafast time-resolved spectroscopy achieved with a streak-camera has been used to perform a detailed study of the temporal evolution of the spectrum of their single pulses. Under conditions of low population inversion density, it is observed that the detected radiation occurs as isolated peaks with a very narrow spectro-temporally spread (ΔωΔt≅1). This behavior remains under conditions of high population inversion density, suggesting that the underlying physical mechanism that produces the emission is the same whatever the pumping conditions. Measurements carried out by varying the numerical aperture of the detection system show that each detected peak within a single pulse is associated with a photon pack emitted in a random direction and wavelength. The relationship between the distribution of paths lengths done by photons inside the active medium, and the gain explains the observed behavior.
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Liñeira del Río JM, López ER, García F, Fernández J. Tribological synergies among chemical-modified graphene oxide nanomaterials and a phosphonium ionic liquid as additives of a biolubricant. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116885] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Guimarey MJ, Gonçalves DE, Liñeira del Río JM, Comuñas MJ, Fernández J, Seabra JH. Lubricant properties of trimethylolpropane trioleate biodegradable oil: High pressure density and viscosity, film thickness, Stribeck curves and influence of nanoadditives. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Liñeira del Río JM, López ER, Fernández J. Tribological properties of graphene nanoplatelets or boron nitride nanoparticles as additives of a polyalphaolefin base oil. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115911] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Nasser KI, Liñeira del Río JM, López ER, Fernández J. Corrigendum to “Synergistic effects of hexagonal boron nitride nanoparticles and phosphonium ionic liquids as hybrid lubricant additives” [J. Mol. Liq., 311 (2020) 113343/https://doi.org/10.1016/j.molliq.2020.113343]. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.113460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Fernández J, Roura-Bas P, Aligia AA. Theory of Differential Conductance of Co on Cu(111) Including Co s and d Orbitals, and Surface and Bulk Cu States. Phys Rev Lett 2021; 126:046801. [PMID: 33576682 DOI: 10.1103/physrevlett.126.046801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 01/07/2021] [Indexed: 06/12/2023]
Abstract
We revisit the theory of the Kondo effect observed by a scanning-tunneling microscope (STM) for transition-metal atoms (TMAs) on noble-metal surfaces, including d and s orbitals of the TMA, surface and bulk conduction states of the metal, and their hopping to the tip of the STM. Fitting the experimentally observed STM differential conductance for Co on Cu(111) including both the Kondo feature near the Fermi energy and the resonance below the surface band, we conclude that the STM senses mainly the Co s orbital and that the Kondo antiresonance is due to interference between states with electrons in the s orbital and a localized d orbital mediated by the conduction states.
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Affiliation(s)
- J Fernández
- Centro Atómico Bariloche, Comisión Nacional de Energía Atómica, 8400 Bariloche, Argentina, Instituto Balseiro, Comisión Nacional de Energía Atómica, 8400 Bariloche, Argentina and Consejo Nacional de Investigaciones Científicas y Técnicas, 1025 CABA, Argentina
| | - P Roura-Bas
- Centro Atómico Bariloche, Comisión Nacional de Energía Atómica, 8400 Bariloche, Argentina, Instituto Balseiro, Comisión Nacional de Energía Atómica, 8400 Bariloche, Argentina and Consejo Nacional de Investigaciones Científicas y Técnicas, 1025 CABA, Argentina
| | - A A Aligia
- Centro Atómico Bariloche, Comisión Nacional de Energía Atómica, 8400 Bariloche, Argentina, Instituto Balseiro, Comisión Nacional de Energía Atómica, 8400 Bariloche, Argentina and Consejo Nacional de Investigaciones Científicas y Técnicas, 1025 CABA, Argentina
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Guimarey MJG, Abdelkader AM, Comuñas MJP, Alvarez-Lorenzo C, Thomas B, Fernández J, Hadfield M. Comparison between thermophysical and tribological properties of two engine lubricant additives: electrochemically exfoliated graphene and molybdenum disulfide nanoplatelets. Nanotechnology 2021; 32:025701. [PMID: 32916677 DOI: 10.1088/1361-6528/abb7b1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Recently graphene and other 2D materials were suggested as nano additives to enhance the performance of nanolubricants and reducing friction and wear-related failures in moving mechanical parts. Nevertheless, to our knowledge there are no previous studies on electrochemical exfoliated nanomaterials as lubricant additives. In this work, engine oil-based nanolubricants were developed via two-steps method using two different 2D nanomaterials: a carbon-based nano additive, graphene nanoplatelets (GNP) and a sulphide nanomaterial, molybdenum disulfide (MoS2) nanoplatelets (MSNP). The influence of these nano additives on the thermophysical properties of the nanolubricants, such as viscosity index, density and wettability, was investigated. The unique features of the electrochemical exfoliated GNP and MSNP allow the formulation of nanolubricant with unusual thermophysical properties. Both the viscosity and density of the nanolubricants decreased by increasing the nanoplatelets loading. The effect of the nano additives loading and temperature on the tribological properties of nanolubricants was investigated using two different test configurations: reciprocating ball-on-plate and rotational ball-on-three-pins. The tribological specimens were analysed by scanning electron microscopy (SEM) and 3D profiler in order to evaluate the wear. The results showed significant improvement in the antifriction and anti-wear properties, for the 2D-materials-based nanolubricants as compared with the engine oil, using different contact conditions. For the reciprocal friction tests, maximum friction and worn area reductions of 20% and 22% were achieved for the concentrations of 0.10 wt% and 0.20 wt% GNP, respectively. Besides, the best anti-wear performance was found for the nanolubricant containing 0.05 wt% MSNP in rotational configuration test, with reductions of 42% and 60% in the scar width and depth, respectively, with respect to the engine oil.
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Affiliation(s)
- María J G Guimarey
- Laboratory of Thermophysical Properties, Nafomat Group, Department of Applied Physics, Faculty of Physics, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
- Department of Design and Engineering, Faculty of Science & Technology, Bournemouth University, Poole, Dorset, BH12 5BB, United Kingdom
| | - Amor M Abdelkader
- Department of Design and Engineering, Faculty of Science & Technology, Bournemouth University, Poole, Dorset, BH12 5BB, United Kingdom
- Department of Engineering, University of Cambridge, Cambridge CB3 0FS, United Kingdom
| | - María J P Comuñas
- Laboratory of Thermophysical Properties, Nafomat Group, Department of Applied Physics, Faculty of Physics, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Carmen Alvarez-Lorenzo
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, I+D Farma Group (GI-1645), Facultad de Farmacia and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Ben Thomas
- Department of Design and Engineering, Faculty of Science & Technology, Bournemouth University, Poole, Dorset, BH12 5BB, United Kingdom
| | - Josefa Fernández
- Laboratory of Thermophysical Properties, Nafomat Group, Department of Applied Physics, Faculty of Physics, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Mark Hadfield
- Department of Design and Engineering, Faculty of Science & Technology, Bournemouth University, Poole, Dorset, BH12 5BB, United Kingdom
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Pizarro MG, Landi V, Navas FJ, León JM, Martínez A, Fernández J, Delgado JV. Non-parametric analysis of the effects of nongenetic factors on milk yield, fat, protein, lactose, dry matter content and somatic cell count in Murciano-Granadina goats. Italian Journal of Animal Science 2020. [DOI: 10.1080/1828051x.2020.1809538] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- M. G. Pizarro
- Departamento de Genética, Facultad de Veterinaria, Universidad de Córdoba, Córdoba, Spain
- Animal Breeding Consulting SL, Parque Científico-Tecnológico de Córdoba, Córdoba, Spain
| | - V. Landi
- Dipartimento di Medicina Veterinaria, Università degli studi di Bari “Aldo Moro”, Bari, Italy
| | - F. J. Navas
- Departamento de Genética, Facultad de Veterinaria, Universidad de Córdoba, Córdoba, Spain
| | - J. M. León
- Centro Agropecuario Provincial de Córdoba, Diputación Provincial de Córdoba, Córdoba, Spain
| | - A. Martínez
- Departamento de Genética, Facultad de Veterinaria, Universidad de Córdoba, Córdoba, Spain
| | - J. Fernández
- Asociación Nacional de Criadores de Caprino de Raza Murciano-Granadina, Granada, Spain
| | - J. V. Delgado
- Departamento de Genética, Facultad de Veterinaria, Universidad de Córdoba, Córdoba, Spain
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López-Iglesias C, López ER, Fernández J, Landin M, García-González CA. Modeling of the Production of Lipid Microparticles Using PGSS ® Technique. Molecules 2020; 25:molecules25214927. [PMID: 33114452 PMCID: PMC7663659 DOI: 10.3390/molecules25214927] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 10/16/2020] [Accepted: 10/23/2020] [Indexed: 11/16/2022] Open
Abstract
Solid lipid microparticles (SLMPs) are attractive carriers as delivery systems as they are stable, easy to manufacture and can provide controlled release of bioactive agents and increase their efficacy and/or safety. Particles from Gas-Saturated Solutions (PGSS®) technique is a solvent-free technology to produce SLMPs, which involves the use of supercritical CO2 (scCO2) at mild pressures and temperatures for the melting of lipids and atomization into particles. The determination of the key processing variables is crucial in PGSS® technique to obtain reliable and reproducible microparticles, therefore the modelling of SLMPs production process and variables control are of great interest to obtain quality therapeutic systems. In this work, the melting point depression of a commercial lipid (glyceryl monostearate, GMS) under compressed CO2 was studied using view cell experiments. Based on an unconstrained D-optimal design for three variables (nozzle diameter, temperature and pressure), SLMPs were produced using the PGSS® technique. The yield of production was registered and the particles characterized in terms of particle size distribution. Variable modeling was carried out using artificial neural networks and fuzzy logic integrated into neurofuzzy software. Modeling results highlight the main effect of temperature to tune the mean diameter SLMPs, whereas the pressure-nozzle diameter interaction is the main responsible in the SLMPs size distribution and in the PGSS® production yield.
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Affiliation(s)
- Clara López-Iglesias
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, I+D Farma group (GI-1645), Faculty of Pharmacy, Agrupación Estratégica de Materiales (AeMAT) and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain;
- Correspondence: (C.L.-I.); (C.A.G.-G.); Tel.: +34-881-814-882 (C.L.-I. & C.A.G.-G.)
| | - Enriqueta R. López
- Laboratorio de Propiedades Termofísicas, Grupo NaFoMat, Departamento de Física Aplicada, Facultad de Física, Agrupación Estratégica de Materiales (AeMAT), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (E.R.L.); (J.F.)
| | - Josefa Fernández
- Laboratorio de Propiedades Termofísicas, Grupo NaFoMat, Departamento de Física Aplicada, Facultad de Física, Agrupación Estratégica de Materiales (AeMAT), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (E.R.L.); (J.F.)
| | - Mariana Landin
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, I+D Farma group (GI-1645), Faculty of Pharmacy, Agrupación Estratégica de Materiales (AeMAT) and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain;
| | - Carlos A. García-González
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, I+D Farma group (GI-1645), Faculty of Pharmacy, Agrupación Estratégica de Materiales (AeMAT) and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain;
- Correspondence: (C.L.-I.); (C.A.G.-G.); Tel.: +34-881-814-882 (C.L.-I. & C.A.G.-G.)
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Pizarro M, Landi V, Navas F, León J, Martínez A, Fernández J, Delgado J. Nonparametric analysis of casein complex genes' epistasis and their effects on phenotypic expression of milk yield and composition in Murciano-Granadina goats. J Dairy Sci 2020; 103:8274-8291. [DOI: 10.3168/jds.2019-17833] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 04/07/2020] [Indexed: 01/17/2023]
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Rodríguez-Lucas C, Rodicio M, Rosete Y, Fernández J. Prospective evaluation of an easy and reliable work flow for the screening of OXA-48-producing Klebsiella pneumoniae in endemic settings. J Hosp Infect 2020; 105:659-662. [DOI: 10.1016/j.jhin.2020.04.044] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 04/27/2020] [Indexed: 11/25/2022]
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Fernández J. De UCI hepática a UCI COVID: historia de una transformación. Gastroenterología y Hepatología 2020; 43:386-388. [PMID: 32561215 PMCID: PMC7260567 DOI: 10.1016/j.gastrohep.2020.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Fernández J. From the liver ICU to the COVID ICU: The story of a transformation. Gastroenterología y Hepatología (English Edition) 2020. [PMCID: PMC7362811 DOI: 10.1016/j.gastre.2020.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- J. Fernández
- UCI Hepática, Servicio de Hepatología, IMDiM, Hospital Clínic, Universidad de Barcelona, Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Madrid, Spain
- European Foundation for the study of chronic liver failure (Ef- Clif), Spain
- Corresponding author.
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Cabañas R, Ramírez E, Sendagorta E, Alamar R, Barranco R, Blanca-López N, Doña I, Fernández J, Garcia-Nunez I, García-Samaniego J, Lopez-Rico R, Marín-Serrano E, Mérida C, Moya M, Ortega-Rodríguez NR, Rivas Becerra B, Rojas-Perez-Ezquerra P, Sánchez- González MJ, Vega-Cabrera C, Vila-Albelda C, Bellón T. Spanish Guidelines for Diagnosis, Management, Treatment, and Prevention of DRESS Syndrome. J Investig Allergol Clin Immunol 2020; 30:229-253. [DOI: 10.18176/jiaci.0480] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Vicente E, Fernández J, Llorente I, Vega L, Castañeda S, García-Vadillo A, González-Álvaro I, Humbría A, Ortiz A, Patiño E, Tomero Muriel E, Garcia de Vicuna R. FRI0264 EFFECTIVENESS, SAFETY AND PATTERNS OF USE OF RITUXIMAB IN SCLERODERMA, IN CLINICAL PRACTICE: 9 YEARS’ EXPERIENCE IN A TERTIARY HOSPITAL. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.2634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Systemic sclerosis (SSc) is a clinically complex and heterogeneous disease. Interstitial lung involvement (ILD) is the main cause of mortality, but progression of skin fibrosis has also been associated with pulmonary dysfunction and mortality. Recently, Rituximab (RTX) has been postulated as a promising therapeutic alternative to cyclophosphamide (CF) or mycophenolate (MFM), but long-term experience is scarce.Objectives:Describe the effectiveness, safety and long-term use of RTX, in a series of cases with SSc.Methods:Retrospective observational study of patients with SSc (EULAR/ACR 2013 criteria) treated with RTX in a university hospital from 2010 to 2019. Sociodemographic data related to SSc and treatments were collected. The effectiveness of RTX was evaluated at 6-12 months and at the end of follow-up, by means of these main outcomes: Rodnan’s modified cutaneous index (mRSS) for skin fibrosis; CK leves for myopathy, variation >10% in forced vital capacity (FVC) and >15% in lung diffusion capacity of carbon monoxide (DLCO) for ILD. Adverse events (AE) were recorded. Statistical analysis performed with Stata v.14 and statistical significance set for p≤0.05.Results:14 women with SSc (mean age 47±13 years, mean evolution 6.2±4.5 years) were treated with RTX for ILD (n=9), skin involvement (n=11) and/or inflammatory myopathy (n=3). The mean±SD of follow-up was 3.36±2.17 years. SSc type: diffuse cutaneous 35.71%, limited cutaneous 21.44%, overlap 35.71% and sine scleroderma 7.14%. Type of antibodies: 50% anti-Scl-70, 14.3% anti-centromere, 21.4% anti-RNA polymerase III and 7.14% anti-Ku. ILD was classified as NINE in 8 patients and NIU in 1. The first cycle of RTX included 2 infusions of 1g and was initiated a mean of 3.36±2.17 years after diagnosis. The retreatments were initially fixed every 6 months and later on demand in 4 patients, and in the rest on demand from the beginning, according to duration of clinical response. A mean of 3.9±2.5 cycles/patient (range: 1-11) were administered. 30% of patients had previously received CF and 21.5% MFM. RTX was administered in association with other DMARDs (MTX 64.29%, hydroxychloroquine [HCQ] 35.71%, MFM 57.14%, others 14.28%), CF (14.29%), intravenous immunoglobulins (7,14%) and prednisone (78.57%). In the final visit, the percentage use of DMARDs (50% MTX, 50% MFM and 28.57% HCQ) and prednisone (62.5% patients, 30% doses) was reduced. mRSS improved significantly. Muscle weakness disappeared in 3/3 with normal CK levels in 2/3 patients with myopathy. The FVC improved or stabilized in 22% and 56% of ILD, respectively, and the DLCO stabilized in 66.70% (not significant). TACAR stabilized in 55.56% of ILD, with some degree of worsening in the rest. Outcomes evolution in the Table:Functional ParametersBasal (mean±SD)6-12 m (mean±SD)CI 95%PFinal (mean±SD)CI 95%PFVC (n=9)63.2±16.870.3±18.6[-13.3–6.1]0,4071.9±21.1[-14.4–5.9]0.36DLCO (n=9)46.3±18.546.1±20.30,3445.2±22.03[-3.9–12.8]0.24Clinical ParametersBasal (mean±SD)Final (mean±SD)CI 95%PmRSS (n=11)13.1±7.28.8±7.1[0.9–9.4]0.02CK (n=3)1786.7±1483.8134.7±119[-2181.9 –5485.9]0.2CK: Creatine kinase; SD: Standard deviation; CI: Confidence interval; m: months.The AE were mostly mild: 13 infusional reactions (6 patients), 1 uncomplicated herpes zoster and 2 serious infections that required admission. There were no exitus.Conclusion:Our results, with a limited sample, suggest that the long-term use of RTX in real world clinical practice may be beneficial for the cutaneous, pulmonary and myopathic manifestations of SSc, with an acceptable security profile.Disclosure of Interests:Esther Vicente Speakers bureau: BMS, Roche., Javier Fernández: None declared, Irene Llorente Speakers bureau: Gebro, Janssen, Sanofi, Lilly., Lorena Vega: None declared, Santos Castañeda: None declared, Alberto García-Vadillo: None declared, Isidoro González-Álvaro Grant/research support from: Roche Laboratories, Consultant of: Lilly, Sanofi, Paid instructor for: Lilly, Speakers bureau: Abbvie, MSD, Roche, Lilly, Alicia Humbría: None declared, Ana Ortiz: None declared, Esther Patiño: None declared, Eva Tomero Muriel: None declared, Rosario Garcia de Vicuna Grant/research support from: BMS, Lilly, MSD, Novartis, Roche, Consultant of: Abbvie, Biogen, BMS, Celltrion, Gebro, Lilly, Mylan, Pfizer, Sandoz, Sanofi, Paid instructor for: Lilly, Speakers bureau: BMS, Lilly, Pfizer, Sandoz, Sanofi
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De Miguel E, Barrio-Parra F, Izquierdo-Díaz M, Fernández J, García-González JE, Álvarez R. Applicability and limitations of the radon-deficit technique for the preliminary assessment of sites contaminated with complex mixtures of organic chemicals: A blind field-test. Environ Int 2020; 138:105591. [PMID: 32120060 DOI: 10.1016/j.envint.2020.105591] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 01/31/2020] [Accepted: 02/17/2020] [Indexed: 06/10/2023]
Abstract
A blind field test with 136 independent measurements of radon (222Rn) in soil air retrieved from a depth of 0.8 m in a decommissioned lindane (γ-hexachlorocyclohexane) production plant was undertaken to evaluate the performance of the 222Rn-deficit technique as a screening methodology for the location and delineation of subsurface accumulations of complex mixtures of organic contaminants. Maps of 222Rn iso-concentrations were drawn and interpreted before direct analytical information regarding concentrations of hexachlorocyclohexanes, chlorobenzenes and BTEX compounds in soil, groundwater and soil air were disclosed to the authors. The location and extension of pollution hot spots inferred from the 222Rn campaigns agrees remarkably well with the analytical data obtained from the intrusive sampling campaigns and with the location of contaminant source zones (chemical reactor and waste-storage area) and geological sinks of those contaminants (paleochannel). Two main limitations to the applicability of the 222Rn-deficit technique were identified and assessed: The statistically significant variation of 222Rn concentrations with diurnal changes of ground-level air temperature and the maximum depth of investigation in the absence of significant advective and co-advective transport of radon. If the influence of those two factors is accounted for and/or minimized (by averaging replicated measurements during the workday and in different days), the 222Rn-deficit technique has the potential to be an efficient technique which delivers information in quasi-real time, with a much higher spatial density than that of intrusive techniques, at a much faster rate and at a significantly lower cost. MAIN FINDINGS: The 222Rn-deficit technique is an effective tool for real-time site characterization only limited by diffusion length of radon and diurnal temperature variations.
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Affiliation(s)
- E De Miguel
- Prospecting & Environment Laboratory (PROMEDIAM), Universidad Politécnica de Madrid, Spain
| | - F Barrio-Parra
- Prospecting & Environment Laboratory (PROMEDIAM), Universidad Politécnica de Madrid, Spain.
| | - M Izquierdo-Díaz
- Prospecting & Environment Laboratory (PROMEDIAM), Universidad Politécnica de Madrid, Spain
| | - J Fernández
- Departamento de Agricultura, Ganadería y Medio Ambiente, Unidad para la descontaminación integral del Lindano, Gobierno de Aragón, Spain
| | - J E García-González
- Prospecting & Environment Laboratory (PROMEDIAM), Universidad Politécnica de Madrid, Spain
| | - R Álvarez
- Department of Mining Exploitation and Prospecting, University of Oviedo, Spain
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Liñeira del Río JM, López ER, González Gómez M, Yáñez Vilar S, Piñeiro Y, Rivas J, Gonçalves DEP, Seabra JHO, Fernández J. Tribological Behavior of Nanolubricants Based on Coated Magnetic Nanoparticles and Trimethylolpropane Trioleate Base Oil. Nanomaterials (Basel) 2020; 10:nano10040683. [PMID: 32260522 PMCID: PMC7221784 DOI: 10.3390/nano10040683] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 03/22/2020] [Accepted: 03/27/2020] [Indexed: 12/03/2022]
Abstract
The main task of this work is to study the tribological performance of nanolubricants formed by trimethylolpropane trioleate (TMPTO) base oil with magnetic nanoparticles coated with oleic acid: Fe3O4 of two sizes 6.3 nm and 10 nm, and Nd alloy compound of 19 nm. Coated nanoparticles (NPs) were synthesized via chemical co-precipitation or thermal decomposition by adsorption with oleic acid in the same step. Three nanodispersions of TMPTO of 0.015 wt% of each NP were prepared, which were stable for at least 11 months. Two different types of tribological tests were carried out: pure sliding conditions and rolling conditions (5% slide to roll ratio). With the aim of analyzing the wear by means of the wear scar diameter (WSD), the wear track depth and the volume of the wear track produced after the first type of the tribological tests, a 3D optical profiler was used. The best tribological performance was found for the Nd alloy compound nanodispersion, with reductions of 29% and 67% in friction and WSD, respectively, in comparison with TMPTO. On the other hand, rolling conditions tests were utilized to study friction and film thickness of nanolubricants, determining that Fe3O4 (6.3 nm) nanolubricant reduces friction in comparison to TMPTO.
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Affiliation(s)
- José M. Liñeira del Río
- Laboratory of Thermophysical Properties, Nafomat Group, Department of Applied Physics, Faculty of Physics, Universidade of Santiago de Compostela, 15782 Santiago de Compostela, Spain; (J.M.L.d.R.); (E.R.L.)
| | - Enriqueta R. López
- Laboratory of Thermophysical Properties, Nafomat Group, Department of Applied Physics, Faculty of Physics, Universidade of Santiago de Compostela, 15782 Santiago de Compostela, Spain; (J.M.L.d.R.); (E.R.L.)
| | - Manuel González Gómez
- Applied Physics Department, NANOMAG Laboratory, Faculty of Physics, Universidade de Santiago de Compostela (USC), 15782 Santiago de Compostela, Spain; (M.G.G.); (S.Y.V.); (Y.P.); (J.R.)
| | - Susana Yáñez Vilar
- Applied Physics Department, NANOMAG Laboratory, Faculty of Physics, Universidade de Santiago de Compostela (USC), 15782 Santiago de Compostela, Spain; (M.G.G.); (S.Y.V.); (Y.P.); (J.R.)
| | - Yolanda Piñeiro
- Applied Physics Department, NANOMAG Laboratory, Faculty of Physics, Universidade de Santiago de Compostela (USC), 15782 Santiago de Compostela, Spain; (M.G.G.); (S.Y.V.); (Y.P.); (J.R.)
| | - José Rivas
- Applied Physics Department, NANOMAG Laboratory, Faculty of Physics, Universidade de Santiago de Compostela (USC), 15782 Santiago de Compostela, Spain; (M.G.G.); (S.Y.V.); (Y.P.); (J.R.)
| | - David E. P. Gonçalves
- Institute for Science and Innovation in Mechanical Engineering and Industrial Engineering (INEGI), Universidade do Porto, Dr. Roberto Frias St., 4200-465 Porto, Portugal;
| | - Jorge H. O. Seabra
- Faculty of Engineering of the University of Porto (FEUP), Dr. Roberto Frias St., 4200-465 Porto, Portugal;
| | - Josefa Fernández
- Laboratory of Thermophysical Properties, Nafomat Group, Department of Applied Physics, Faculty of Physics, Universidade of Santiago de Compostela, 15782 Santiago de Compostela, Spain; (J.M.L.d.R.); (E.R.L.)
- Correspondence:
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Orts F, Bonastre J, Fernández J, Cases F. Effect of chloride on the one step electrochemical treatment of an industrial textile wastewater with tin dioxide anodes. The case of trichromy procion HEXL. Chemosphere 2020; 245:125396. [PMID: 31784183 DOI: 10.1016/j.chemosphere.2019.125396] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 09/27/2019] [Accepted: 11/16/2019] [Indexed: 06/10/2023]
Abstract
The resulting solutions from the cotton fabrics dyeing using the trichromy Procion HEXL, with NaCl as electrolyte, were electrochemically treated. These dyes have two azo groups as chromophores and two monochlorotriazinic groups as reactive groups in their structure. The combined oxidation/reduction at 125 mA cm-2 in a filter-press cell without compartment separation was carried out using an anode of Ti/SnO2-Sb-Pt and a cathode of stainless steel. This procedure has been effective in previous experiments using sulphate as electrolyte. A significant decrease in total organic carbon (TOC), chemical oxygen demand (COD), and total nitrogen (TN) was obtained. Moreover, the process took place efficiently. The average oxidation state (AOS) and the carbon oxidation state (COS) data confirmed the presence of stable oxidized intermediates in the electrolysed solution. The chromatography and the UV-Visible spectrophotometry assays indicated that full decolourisation is obtained at a loaded charge of around 0.81 Ah L-1 which is associated with an electrical energy per order (EEO) of 1.20 kWh m-3.
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Affiliation(s)
- F Orts
- Departamento de Ingeniería Textil y Papelera, Escuela Politécnica Superior de Alcoy, Universitat Politècnica de València, Plaza Ferrándiz y Carbonell, s/n, 03801, Alcoy, Spain
| | - J Bonastre
- Departamento de Ingeniería Textil y Papelera, Escuela Politécnica Superior de Alcoy, Universitat Politècnica de València, Plaza Ferrándiz y Carbonell, s/n, 03801, Alcoy, Spain
| | - J Fernández
- Departamento de Ingeniería Textil y Papelera, Escuela Politécnica Superior de Alcoy, Universitat Politècnica de València, Plaza Ferrándiz y Carbonell, s/n, 03801, Alcoy, Spain
| | - F Cases
- Departamento de Ingeniería Textil y Papelera, Escuela Politécnica Superior de Alcoy, Universitat Politècnica de València, Plaza Ferrándiz y Carbonell, s/n, 03801, Alcoy, Spain.
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Liñeira del Río JM, López ER, Fernández J. Synergy between boron nitride or graphene nanoplatelets and tri(butyl)ethylphosphonium diethylphosphate ionic liquid as lubricant additives of triisotridecyltrimellitate oil. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112442] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Fernández J, de la Fuente VG, García MTF, Sánchez JG, Redondo BI, Villar CJ, Lombó F. A diet based on cured acorn-fed ham with oleic acid content promotes anti-inflammatory gut microbiota and prevents ulcerative colitis in an animal model. Lipids Health Dis 2020; 19:28. [PMID: 32093685 PMCID: PMC7041278 DOI: 10.1186/s12944-020-01205-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 02/18/2020] [Indexed: 02/08/2023] Open
Abstract
Background Diets based on meat products are not recommended in the case of ulcerative colitis (UC). The objective here is to test if some traditional cured meat products, as acorn-fed ham (high levels of oleic acid), may be useful for controlling inflammatory diseases as UC in animal models, which could represent a new dietary complementary intervention in the prevention of this inflammatory disease in humans. Methods Two rat cohorts have been used: conventional vegetable rat feed and acorn-fed ham. UC was induced with DSS in drinking water ad libitum for 1 week. Short-chain fatty acids (SCFAs) and 16S rRNA metagenomics from bacterial populations were analyzed in cecum samples. Colon samples were analyzed for histological parameters. Results Acorn-fed ham diet induced changes in gut microbiota composition, with pronounced enrichments in anti-inflammatory bacterial genera (Alistipes, Blautia, Dorea, Parabacteroides). The animals with this diet showed a strong reduction in most parameters associated to ulcerative colitis: disease activity index, macroscopic score of colitis, epitelium alteration in colon mucosa, inflammatory cell density in colon, myeloperoxidase titers in colon, proinflammatory cytokines (IL-17, IFN-γ). Also, acorn-fed ham diet animals showed increased total antioxidant activity an oleic acid levels in plasma, as well as higher short-chain fatty acid concentrations in cecum (isobutyric, isovaleric and valeric). Conclusions In the acorn-fed ham cohort, as a result of the dietary intake of oleic acid and low intake of omega-6 fatty acids, a strong preventive effect against UC symptoms was observed.
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Affiliation(s)
- J Fernández
- Research Group BIONUC (Biotechnology of Nutraceuticals and Bioactive Compounds), Departamento de Biología Funcional, Área de Microbiología, Universidad de Oviedo, 33006, Oviedo, Principality of Asturias, Spain.,IUOPA (Instituto Universitario de Oncología del Principado de Asturias), 33006, Oviedo, Principality of Asturias, Spain.,ISPA (Instituto de Investigación Sanitaria del Principado de Asturias), 33006, Oviedo, Principality of Asturias, Spain
| | - V García de la Fuente
- ISPA (Instituto de Investigación Sanitaria del Principado de Asturias), 33006, Oviedo, Principality of Asturias, Spain.,Molecular Histopathology Unit in Animal Models for Cancer, Instituto Universitario de Oncología del Principado de Asturias (IUOPA), Universidad de Oviedo, 33006, Oviedo, Spain
| | - M T Fernández García
- ISPA (Instituto de Investigación Sanitaria del Principado de Asturias), 33006, Oviedo, Principality of Asturias, Spain.,Molecular Histopathology Unit in Animal Models for Cancer, Instituto Universitario de Oncología del Principado de Asturias (IUOPA), Universidad de Oviedo, 33006, Oviedo, Spain
| | - J Gómez Sánchez
- Molecular Histopathology Unit in Animal Models for Cancer, Instituto Universitario de Oncología del Principado de Asturias (IUOPA), Universidad de Oviedo, 33006, Oviedo, Spain.,Research and Development Department, Cárnicas Joselito S.A., Salamanca, Spain
| | - B Isabel Redondo
- Research and Development Department, Cárnicas Joselito S.A., Salamanca, Spain.,Department Animal Science, Faculty of Veterinary Medicine, Universidad Complutense de Madrid, Madrid, Spain
| | - C J Villar
- Research Group BIONUC (Biotechnology of Nutraceuticals and Bioactive Compounds), Departamento de Biología Funcional, Área de Microbiología, Universidad de Oviedo, 33006, Oviedo, Principality of Asturias, Spain.,IUOPA (Instituto Universitario de Oncología del Principado de Asturias), 33006, Oviedo, Principality of Asturias, Spain.,ISPA (Instituto de Investigación Sanitaria del Principado de Asturias), 33006, Oviedo, Principality of Asturias, Spain
| | - F Lombó
- Research Group BIONUC (Biotechnology of Nutraceuticals and Bioactive Compounds), Departamento de Biología Funcional, Área de Microbiología, Universidad de Oviedo, 33006, Oviedo, Principality of Asturias, Spain. .,IUOPA (Instituto Universitario de Oncología del Principado de Asturias), 33006, Oviedo, Principality of Asturias, Spain. .,ISPA (Instituto de Investigación Sanitaria del Principado de Asturias), 33006, Oviedo, Principality of Asturias, Spain.
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Fernández-Verdugo A, Forcelledo L, Rodríguez-Lozano J, Rodríguez-Lucas C, Barreiro-Hurlé L, Canut A, de la Iglesia P, Escudero D, Calvo J, Boga JA, Margolles M, Rodicio MR, Fernández J. Prospective multicentre study of rectal carriage of multidrug-resistant Enterobacteriaceae among health-care workers in Spain. Clin Microbiol Infect 2020; 26:649.e1-649.e4. [PMID: 31972320 DOI: 10.1016/j.cmi.2020.01.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 12/15/2019] [Accepted: 01/11/2020] [Indexed: 01/05/2023]
Abstract
OBJECTIVES To investigate the rectal carriage of multidrug-resistant Enterobacteriaceae (colistin-resistant, extended-spectrum β-lactamase (ESBL) -producers and/or carbapenemase-producers) among health-care workers (HCWs) from six Spanish hospitals. METHODS Rectal swabs from 258 HCWs, employed in intensive care units, haematology wards and clinical microbiology laboratories from six hospitals in northern Spain were studied. They were cultured in selective media for Gram-negative resistant bacteria. Detection of antimicrobial resistance genes and multilocus sequence typing were performed by PCR and further sequencing. A questionnaire including data related to risk factors of colonization/infection by resistant bacteria (age, gender, chronic diseases, immunosuppressive therapies, invasive procedures or antimicrobial treatments) was given to each participant. RESULTS No carbapenemase-producing Enterobacteriaceae were recovered. However, 8/258 HCWs (3.1%) were positive for ESBL-producing isolates. This rate was not higher than the colonization rate previously reported in Spain for healthy people in the community. Five isolates showed high-level resistance to colistin (MICs ranging from 8 to 128 mg/L) but all of them were negative for the mcr genes tested. No statistically significant risk factors for gut colonization by ESBL-producing or colistin-resistant Enterobacteriaceae were identified among the HCWs participating in the study. CONCLUSIONS Our data suggest that working in hospitals does not represent a risk for rectal carriage of multidrug-resistant Enterobacteriaceae.
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Affiliation(s)
- A Fernández-Verdugo
- Servicio de Microbiología, Hospital Universitario Central de Asturias, Oviedo, Spain; Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
| | - L Forcelledo
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain; Servicio de Medicina Intensiva, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - J Rodríguez-Lozano
- Servicio de Microbiología, Hospital Universitario Marqués de Valdecilla, Santander, Spain; Insituto de Investigación Sanitaria Valdecilla (IDIVAL), Santander, Spain
| | - C Rodríguez-Lucas
- Unidad de Microbiología, Hospital El Bierzo, Ponferrada, Spain; Departamento de Biología Funcional (Área de Microbiología), Universidad de Oviedo, Oviedo, Spain
| | - L Barreiro-Hurlé
- Servicio de Microbiología, Hospital Carmen y Severo Ochoa, Cangas de Narcea, Spain
| | - A Canut
- Servicio de Microbiología, Hospital Universitario de Álava, Vitoria-Gasteiz, Spain
| | - P de la Iglesia
- Servicio de Microbiología, Hospital de Cabueñes, Gijón, Spain
| | - D Escudero
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain; Servicio de Medicina Intensiva, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - J Calvo
- Servicio de Microbiología, Hospital Universitario Marqués de Valdecilla, Santander, Spain; Insituto de Investigación Sanitaria Valdecilla (IDIVAL), Santander, Spain
| | - J A Boga
- Servicio de Microbiología, Hospital Universitario Central de Asturias, Oviedo, Spain; Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
| | - M Margolles
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain; Dirección General de Salud Pública del Principado de Asturias, Oviedo, Spain
| | - M R Rodicio
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain; Departamento de Biología Funcional (Área de Microbiología), Universidad de Oviedo, Oviedo, Spain
| | - J Fernández
- Servicio de Microbiología, Hospital Universitario Central de Asturias, Oviedo, Spain; Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain.
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Salgado Sánchez P, Fernández J, Tinao I, Porter J. Vibroequilibria in microgravity: Comparison of experiments and theory. Phys Rev E 2019; 100:063103. [PMID: 31962424 DOI: 10.1103/physreve.100.063103] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Indexed: 06/10/2023]
Abstract
Experiments on vibrated fluids confined in cylindrical and cuboidal containers were performed under the reduced gravity conditions of a parabolic flight. The results constitute a systematic quantitative investigation of the vibroequilibria effect, which refers to the reorientation of vibrated fluids in response to the inhomogeneous oscillatory velocity field and the accompanying dynamic pressure. This effect is amplified in microgravity where the restoring force of gravity is small or absent. Here the vibrations are transmitted via a pair of piezoelectric ceramics and a cantilever beam, excited in a resonant mode. The first and second resonances exhibit different types of motion and lead to different types of vibroequilibria surfaces, one with a dip or crater in the interior and the other flattened compared to the unforced reference experiment. The general tendency for interfaces to orient more perpendicular, on average, to the vibrational axis is confirmed. In the case of water in a cuboidal container, a quantitative comparison is made with vibroequilibria theory and with direct simulations of the Navier-Stokes equations. The good agreement confirms the predictions of vibroequilibria theory and suggests the capacity of this phenomenon to manipulate and position fluids in space environments through the choice of frequency and resonant mode.
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Affiliation(s)
- P Salgado Sánchez
- Center for Computational Simulation, Escuela Técnica Superior de Ingeniería Aeronáutica y del Espacio, Universidad Politécnica de Madrid, Plaza de Cardenal Cisneros 3, 28040 Madrid, Spain
| | - J Fernández
- Center for Computational Simulation, Escuela Técnica Superior de Ingeniería Aeronáutica y del Espacio, Universidad Politécnica de Madrid, Plaza de Cardenal Cisneros 3, 28040 Madrid, Spain
| | - I Tinao
- Center for Computational Simulation, Escuela Técnica Superior de Ingeniería Aeronáutica y del Espacio, Universidad Politécnica de Madrid, Plaza de Cardenal Cisneros 3, 28040 Madrid, Spain
| | - J Porter
- Center for Computational Simulation, Escuela Técnica Superior de Ingeniería Aeronáutica y del Espacio, Universidad Politécnica de Madrid, Plaza de Cardenal Cisneros 3, 28040 Madrid, Spain
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Rodríguez-Lucas C, Rodicio MR, Càmara J, Domínguez MÁ, Alaguero M, Fernández J. Long-term endemic situation caused by a linezolid- and meticillin-resistant clone of Staphylococcus epidermidis in a tertiary hospital. J Hosp Infect 2019; 105:64-69. [PMID: 31634538 DOI: 10.1016/j.jhin.2019.10.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 10/08/2019] [Accepted: 10/14/2019] [Indexed: 11/26/2022]
Abstract
BACKGROUND Linezolid (LZD)-resistant Staphylococcus epidermidis (LRSE) are increasing, and are mainly associated with outbreaks in hospital wards with high LZD consumption. AIM To investigate the frequency of LRSE in a tertiary hospital in the context of LZD use. METHODS The frequency of LRSE and the data on LZD usage [expressed as defined daily dose (DDD) per 100 patient-days], from 2011 to 2017, were analysed retrospectively. Selected LRSE were typed by pulsed-field gel electrophoresis (PFGE) and screened for transferable LZD resistance genes. Representative isolates were typed by multi-locus sequence typing, and ribosomal mechanisms of LZD resistance were investigated. FINDINGS In total, 435 LRSE were detected, with frequencies ranging from 13.56% to 32.93% in the intensive care unit (ICU) where LZD consumption was high (6.34-8.10 DDDs), and from 2.48 to 6.80% in the remaining wards where LZD use was considerably lower (0.63-2.49 DDDs). The first 44 LRSE isolates recovered (June 2013-June 2014) were closely related according to PFGE patterns, and all except one were resistant to meticillin due to mecA production. Selected isolates belonged to ST2, carried SCCmec III, and had the G2576T mutation in the V domain of each of the six copies of the 23S rRNA gene. Five of the 44 isolates (11.36%) were positive for the cfr gene. CONCLUSION An ST2 LZD- and meticillin-resistant clone was found in the ICU and also in wards with low consumption of LZD. This highlights the need to implement and maintain infection control measures as well as antimicrobial stewardship programmes in all hospital units in order to preserve the efficacy of LZD.
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Affiliation(s)
- C Rodríguez-Lucas
- Unidad de Microbiología, Hospital El Bierzo, Ponferrada, Spain; Departamento de Biología Funcional, Área de Microbiología, Universidad de Oviedo, Oviedo, Spain; Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain
| | - M R Rodicio
- Departamento de Biología Funcional, Área de Microbiología, Universidad de Oviedo, Oviedo, Spain; Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain
| | - J Càmara
- Servicio de Microbiología, Hospital Universitari de Bellvitge-Universitat de Barcelona-IDIBELL, Barcelona, Spain; CIBER de Enfermedades Respiratorias, Spain
| | - M Á Domínguez
- Servicio de Microbiología, Hospital Universitari de Bellvitge-Universitat de Barcelona-IDIBELL, Barcelona, Spain; Spanish Network for Research in Infectious Diseases, Instituto de Salud Carlos III, Madrid, Spain
| | - M Alaguero
- Servicio de Farmacia Hospitalaria, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - J Fernández
- Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain; Servicio de Microbiología, Hospital Universitario Central de Asturias, Oviedo, Spain.
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Gorni G, Velázquez JJ, Kochanowicz M, Dorosz D, Balda R, Fernández J, Durán A, Pascual MJ. Tunable upconversion emission in NaLuF 4-glass-ceramic fibers doped with Er 3+ and Yb 3. RSC Adv 2019; 9:31699-31707. [PMID: 35527946 PMCID: PMC9072642 DOI: 10.1039/c9ra05182a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 09/25/2019] [Indexed: 12/01/2022] Open
Abstract
Novel glass-ceramic optical fibers containing NaLuF4 nanocrystals doped with 0.5ErF3 and 2YbF3 (mol%) have been prepared by the rod-in-tube method and controlled crystallization. NaLuF4 nanocrystals with a size around 20 nm are obtained after heat treatment at 600 °C. Intense upconverted green and red emissions due to (2H11/2, 4S3/2) → 4I15/2 and 4F9/2 → 4I15/2 transitions, respectively, together with a blue emission due to 2H9/2 → 4I15/2 transition have been observed under excitation at 980 nm. The intensity of the green and red upconversion bands shows a nearly linear dependence on the excitation power which can be explained by saturation effects in the intermediate energy states and proves that a sensitized energy transfer upconversion process is responsible for the population of the emitting levels of Er3+ ions. The upconversion emission color changes from yellow to green by increasing the excitation power density which allows to manipulate the color output of the Er3+ emission in the glass-ceramic fibers. The tunable emission color is easily detected with the naked eye. This interesting characteristic makes these glass-ceramic fibers promising materials for photonic applications. Novel glass-ceramic optical fibers containing NaLuF4 nanocrystals doped with 0.5ErF3 and 2YbF3 (mol%) have been prepared by the rod-in-tube method and controlled crystallization.![]()
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Affiliation(s)
- G Gorni
- Ceramics and Glass Institute, CSIC Madrid Spain
| | - Jose J Velázquez
- FunGlass-Centre for Functional and Surface Functionalized Glass, Alexander Dubček University of Trenčín Trenčín Slovakia
| | - M Kochanowicz
- Bialystok University of Technology, Faculty of Electrical Engineering Bialystok Poland
| | - D Dorosz
- AGH University of Science and Technology, Faculty of Materials Science and Ceramics Krakow Poland
| | - R Balda
- Applied Physic Department I, Superior School of Engineering, Basque Country University Bilbao Spain.,Materials Physics Center CSIC-UPV/EHU San Sebastian Spain
| | - J Fernández
- Donostia International Physics Center San Sebastian Spain
| | - A Durán
- Ceramics and Glass Institute, CSIC Madrid Spain
| | - M J Pascual
- Ceramics and Glass Institute, CSIC Madrid Spain
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Hernández-Tejero M, Triolo M, Fernández J. Reply to: "Another clinical unmet need in liver patients: Multidrug-resistant bacteria in decompensated cirrhosis". J Hepatol 2019; 71:845-846. [PMID: 31351768 DOI: 10.1016/j.jhep.2019.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 07/03/2019] [Indexed: 12/04/2022]
Affiliation(s)
- M Hernández-Tejero
- Liver ICU, Liver Unit, Hospital Clinic, University of Barcelona, Barcelona, Spain
| | - M Triolo
- Liver ICU, Liver Unit, Hospital Clinic, University of Barcelona, Barcelona, Spain
| | - J Fernández
- Liver ICU, Liver Unit, Hospital Clinic, University of Barcelona, Barcelona, Spain; European Foundation of Chronic Liver Failure (EF-Clif), Barcelona, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHED), ISCIII, Spain.
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Iparraguirre I, Azkargorta J, García-Revilla S, Fernández J, Balda R. Input/output energy in solid state dye random lasers. Opt Express 2019; 27:19418-19425. [PMID: 31503701 DOI: 10.1364/oe.27.019418] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 05/31/2019] [Indexed: 06/10/2023]
Abstract
A new approach to the problem of energy in solid state dye random lasers is presented. The measurements performed in terms of absolute energy show that the slope efficiency depends on the measurement conditions. In particular, in lasers with pumping in the picoseconds range, the result is really different if measured by recording the emission in the same time range or in a longer one (nanoseconds range). In the last case, no energy threshold is observed. A previously developed model has been applied to the solid state dye random laser. It is a rate-equations model, based on a distribution of paths with different lengths, which partially share population inversion. The results of the model are satisfactory and show that the dynamic behavior is pretty similar in solid state dye random lasers and in inorganic powders.
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Navarro I, de la Torre A, Sanz P, Arjol MA, Fernández J, Martínez MA. Organochlorine pesticides air monitoring near a historical lindane production site in Spain. Sci Total Environ 2019; 670:1001-1007. [PMID: 31018415 DOI: 10.1016/j.scitotenv.2019.03.313] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 03/19/2019] [Accepted: 03/20/2019] [Indexed: 06/09/2023]
Abstract
The landfilling and dumping of persistent organic pollutants (POPs) and other persistent hazardous chemicals, such as hexachlorocyclohexane (HCH) isomers can have significantly adverse environmental consequences and cause contamination in soil, water, and atmosphere systems. Approximately 115,000 t of HCH wastes were generated by INQUINOSA Factory located in Sabiñánigo (Aragón, Spain) from 1975 to 1992, and were mainly dumped at Bailín and Sardas landfills. Under the frame of the project plan approved by the Government of Aragón, remediation and containment measures were implemented at the derelict production facility and landfill sites. To protect and assess the local environment, the concentrations of HCH isomers, pentachlorobenzene (PeCB) and hexachlorobenzene (HCB) in air were periodically monitored in the Sardas landfills and surroundings by passive sampling devices. The influence of meteorological parameters was evaluated, showing positive correlations between temperature and HCH and HCB concentrations. The highest HCH levels were detected in Sardas landfill and INQUINOSA Factory sites. PeCB values were statistically higher in Sardas landfill than in Sabiñánigo urban core, nevertheless, HCB concentrations were similar in both sampling points. Statistically positive correlations were found among HCH isomers in all sampling points, showing a major common source. The chlorobenzenes also correlated positively with each other. The α-/γ-HCH ratios were calculated (1.46 ± 1.25; mean ± S.D.), corroborating that concentrations detected were mainly originated from the historical production, storage and waste disposal of technical HCH.
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Affiliation(s)
- I Navarro
- Group of Persistent Organic Pollutants, Department of Environment, CIEMAT, Av. Complutense 40, 28040 Madrid, Spain.
| | - A de la Torre
- Group of Persistent Organic Pollutants, Department of Environment, CIEMAT, Av. Complutense 40, 28040 Madrid, Spain
| | - P Sanz
- Group of Persistent Organic Pollutants, Department of Environment, CIEMAT, Av. Complutense 40, 28040 Madrid, Spain
| | - M A Arjol
- Sociedad Aragonesa de Gestión Agroambiental SARGA, Av. Ranillas 5 Edificio A, 50018 Zaragoza, Spain
| | - J Fernández
- Department of Rural Development and Sustainability, Government of Aragón, Pza. San Pedro Nolasco, 50071 Zaragoza, Spain
| | - M A Martínez
- Group of Persistent Organic Pollutants, Department of Environment, CIEMAT, Av. Complutense 40, 28040 Madrid, Spain
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Fernández J. Nuevos táxones animales descritos en la península Ibérica y Macaronesia desde 1994 (XXI). GRAELLSIA 2019. [DOI: 10.3989/graellsia.2019.v75.226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
La lista anual incluye en esta ocasión 580 táxones nuevos aparecidos en 309 referencias bibliográficas publicadas principalmente en 2017 y 2018. Comprende 463 especies, 69 géneros o subgéneros, 35 categorías supragenéricas, 12 subespecies y una categoría infrasubespecífica procedentes del área considerada.
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Kaplan V, Morales C, Bobadilla F, Fernández J, Segovia L, Vera V, Sanhueza I. Epidemiologic and Histopathologic Characterization of Cutaneous Metastases in Patients Who Visited 2 Hospitals in Santiago de Chile Between 2005 and 2017. Actas Dermo-Sifiliográficas (English Edition) 2019. [DOI: 10.1016/j.adengl.2019.02.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Gonçalves DEP, Liñeira del Rio JM, Comuñas MJP, Fernández J, Seabra JHO. High Pressure Characterization of the Viscous and Volumetric Behavior of Three Transmission Oils. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.8b05090] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - José M. Liñeira del Rio
- Laboratorio de Propiedades Termofı́sicas, Grupo NaFoMat, Departamento de Fı́sica Aplicada, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain
| | - María J. P. Comuñas
- Laboratorio de Propiedades Termofı́sicas, Grupo NaFoMat, Departamento de Fı́sica Aplicada, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain
| | - Josefa Fernández
- Laboratorio de Propiedades Termofı́sicas, Grupo NaFoMat, Departamento de Fı́sica Aplicada, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain
| | - Jorge H. O. Seabra
- FEUP, Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal
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Liñeira del Río JM, López ER, Fernández J, García F. Tribological properties of dispersions based on reduced graphene oxide sheets and trimethylolpropane trioleate or PAO 40 oils. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.10.107] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Castro A, Drag L, Cizek L, Fernández J. Rosalia alpina adults (Linnaeus, 1758) (Insecta, Coleoptera) avoid direct sunlight. Anim Biodiv Conserv 2019. [DOI: 10.32800/abc.2019.42.0059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Kaplan V, Morales C, Bobadilla F, Fernández J, Segovia L, Vera V, Sanhueza I. Epidemiologic and Histopathologic Characterization of Cutaneous Metastases in Patients Who Visited 2 Hospitals in Santiago de Chile Between 2005 and 2017. Actas Dermosifiliogr (Engl Ed) 2018; 110:220-226. [PMID: 30577946 DOI: 10.1016/j.ad.2018.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 06/12/2018] [Accepted: 07/15/2018] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND AND OBJECTIVE Cutaneous metastases (CMs) account for 2% of skin tumors and their incidence varies between 0.7% and 9% in patients with cancer. The objective of this study was to describe and analyze the demographic, clinical, and histopathologic characteristics of CM in patients who visited 2 hospitals in the Santiago de Chile metropolitan region. MATERIAL AND METHOD We performed a retrospective, descriptive, analytical, observational, cross-sectional study. We reviewed the pathology reports, patient records, pathology slides, and dates of death for diagnosed cases of CM from the anatomic pathology departments of 2 hospitals in the Santiago de Chile metropolitan region between 2015 and 2017. RESULTS Ninety-six patients with CM were included in the study; 60.42% were women and 39.58% were men. The mean (SD) age was 67.95 (13.74) years, with a range of 28 to 96 years. The most common primary tumor was melanoma in 27.08% of cases (n=26), followed by breast cancer (18.75%, n=18), and adenocarcinoma (15.63%, n=15). The median time between diagnosis of the tumor and cutaneous metastasis was 9 months. Patients with CM of melanoma had a higher survival rate than patients with metastasis of other primary tumors (P<.05). A histopathologic study of 91 slides showed that diffuse infiltration of the tissue with tumor cells was the most common pattern and vascular invasion was rare. CONCLUSIONS The results are similar to those found worldwide. CM is a rare manifestation of internal tumors. It presents mainly at an advanced age and is equally prevalent in both sexes.
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Affiliation(s)
- V Kaplan
- Departamento de Dermatología y Venereología, Universidad de Chile, Santiago, Chile.
| | - C Morales
- Servicio de Anatomía Patológica, Hospital Clínico de la Universidad de Chile, Santiago, Chile
| | - F Bobadilla
- Servicio de Dermatología y Venereología, Hospital Barros Luco Trudeau, Santiago, Chile
| | - J Fernández
- Servicio de Dermatología y Venereología, Hospital San José, Santiago, Chile
| | - L Segovia
- Servicio de Anatomía Patológica, Hospital Barros Luco Trudeau, Santiago, Chile
| | - V Vera
- Departamento de Nutrición, Universidad de Chile, Santiago, Chile
| | - I Sanhueza
- Facultad de Medicina, Universidad de Chile, Santiago, Chile
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Iparraguirre I, Azkargorta J, Fernández J, García-Revilla S, Barredo-Zuriarrain M, Balda R. Random laser model for Nd 3+-doped powders and its application to stimulated emission cross-section calculations. Opt Express 2018; 26:31018-31030. [PMID: 30469989 DOI: 10.1364/oe.26.031018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 10/10/2018] [Indexed: 06/09/2023]
Abstract
A new theoretical approach for random lasing of Nd3+doped powders is presented. The model's singularity lies in the fact that it proposes a probability distribution of the stimulated photon paths lengths in the sample, as well as a population inversion shared by different photon paths. The model's predictions satisfactorily compare with the results of laser threshold and absolute input/output energy slope of a real Random Laser. The main novel issue is that the best fit to the experimental results requires considering a high level of shared population inversion among different paths. The model simulation of local and spatially integrated Random Laser emissions, as well as their time evolution, is in accordance with the experimental behavior. These results also provide a new method of measuring the stimulated emission cross-section in this kind of random laser materials.
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Santos A, Fernández J, Guadaño J, Lorenzo D, Romero A. Chlorinated organic compounds in liquid wastes (DNAPL) from lindane production dumped in landfills in Sabiñanigo (Spain). Environ Pollut 2018; 242:1616-1624. [PMID: 30076051 DOI: 10.1016/j.envpol.2018.07.117] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 07/12/2018] [Accepted: 07/24/2018] [Indexed: 06/08/2023]
Abstract
α, β and γ-hexachlorocyclohexane (HCH) are persistent and bioaccumulative pollutants and they were included in the Stockholm Convention on Persistent Organic Pollutants (POPs). Old lindane factories generated high amounts of wastes with HCH and other Chlorinated Organic Compounds (COCS). These were often dumped in the surroundings of the production sites, polluting soil and groundwaters with the associated risk of surface pollution. This is the case of the Sardas and Bailin landfills, located in Sabiñánigo (Huesca, Spain). Among the waste from lindane production, a liquid residue was detected in the landfill subsurfaces, forming a dense non-aqueous phase liquid (DNAPL) composed of HCH isomers, benzene and chlorobenzenes, with a high impact on groundwater pollution. In this study, six DNAPL samples obtained from the Bailin and Sardas landfills were analyzed by GC/MSD and GC/FID/ECD. Compounds were identified using mass spectra and the retention index from pure standards and literature information. Pure positional isomers of dichlorobenzene (DCB), trichlorobenzene (TCB), tetrachlorobenzene (TetraCB), HCH and pentachlorocyclohexene (PentaCX) were distinguished and quantified. In addition, heptachlorocyclohexane (HeptaCH) isomers, precursors of hexacholorocylohexene (HexaCX), were also identified and quantified in the DNAPL samples, although the corresponding isomers could not be discriminated. Information about PentaCX, HexaCx and HeptaCH identification is very limited in the literature. HCH contents in the DNAPL ranged from 22% to 30% in weight, the major isomers being lindane and δ-HCH, followed by α-HCH. The β isomer was the least abundant. HeptaCH contents were present in the same order of magnitude as HCHs in the DNAPL. PentaCXs and HexaCXs could have appeared as dehydrochlorination derivatives of HCHs and HeptaCHs, respectively. Two of the DNAPLs analyzed showed a higher content of TCBs and TetraCBs, associated with lower HCH and HeptaCH contents. Variations of these compounds in the DNAPL could be related to an alkaline dehydrochlorination in the landfill conditions.
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Affiliation(s)
- A Santos
- Chemical Engineering Department, University Complutense of Madrid, Spain.
| | - J Fernández
- Department of Agriculture, Livestock and Environment, Government of Aragon, Spain.
| | - J Guadaño
- EMGRISA, Empresa Para la Gestión de Residuos Industriales, S.A., S.M.P,. M.P, C/Santiago Rusiñol 12, 28040, Madrid, Spain.
| | - D Lorenzo
- Chemical Engineering Department, University Complutense of Madrid, Spain
| | - A Romero
- Chemical Engineering Department, University Complutense of Madrid, Spain
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Semenov KN, Charykov NA, López ER, Fernández J, Parajó JJ, Podolsky NE, Murin IV. Pressure and temperature dependence of light fullerenes solubility in n-heptane. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.06.099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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