1
|
Potential health risks of aligners and retainers. Br Dent J 2024; 236:735. [PMID: 38789735 DOI: 10.1038/s41415-024-7465-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Accepted: 05/02/2024] [Indexed: 05/26/2024]
|
2
|
Protective effect of bilingualism on aging, MCI, and dementia: A community-based study. Alzheimers Dement 2024; 20:2620-2631. [PMID: 38376105 PMCID: PMC11032525 DOI: 10.1002/alz.13702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 12/27/2023] [Accepted: 12/29/2023] [Indexed: 02/21/2024]
Abstract
INTRODUCTION Lifelong bilingualism is associated with a delayed age at onset of dementia, but evidence from community-based studies is limited. We investigated the relationship between bilingualism and the prevalence of cognitive impairment in a linguistically diverse community. METHODS A door-to-door community study was conducted from January to December 2021 in urban Bengaluru, India. 1234 individuals aged ≥60 years participated in the study. Participants were diagnosed with no cognitive impairment (NCI), mild cognitive impairment (MCI), or dementia using established diagnostic criteria. RESULTS Dementia prevalence was higher in monolinguals (4.9%) than bilinguals (0.4%) (P = .001). The prevalence of MCI was also higher in monolinguals (8.5%) than bilinguals (5.3%) (P = .001). The study also revealed better cognitive function in bilinguals than monolinguals with NCI, after controlling for confounding variables. DISCUSSION The current study provides significant support for the protective effect of bilingualism on cognitive impairment in an urban community with extensive bilingual interactional contexts in everyday life. HIGHLIGHTS Bilingualism has been demonstrated to protect against dementia and mild cognitive impairment in a linguistically diverse community with extensive code-switching contexts. Bilingual older individuals had superior baseline cognitive performance compared to monolingual older individuals. Bilingualism was found to have an independent effect on general cognition after adjusting for major social determinants of health in the group without cognitive impairment.
Collapse
|
3
|
Illiterate Addenbrooke's Cognitive Examination-III in Three Indian Languages: An Adaptation and Validation Study. Arch Clin Neuropsychol 2024:acad106. [PMID: 38273465 DOI: 10.1093/arclin/acad106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 11/15/2023] [Accepted: 12/15/2023] [Indexed: 01/27/2024] Open
Abstract
BACKGROUND Literacy is an important factor that predicts cognitive performance. Existing cognitive screening tools are validated only in educated populations and are not appropriate for older adults with little or no education leading to poor performance on these tests and eventually leading to misdiagnosis. This challenge for clinicians necessitates a screening tool suitable for illiterate or low-literate older individuals. OBJECTIVES The objective was to adapt and validate Addenbrooke's Cognitive Examination-III (ACE-III) for screening general cognitive functions in illiterate and low-literate older populations in the Indian context in three languages. METHOD The Indian illiterate ACE-III was systematically adapted by modifying the original items of the Indian literate ACE-III to assess the cognitive functions of illiterates and low-literates with the consensus of an expert panel of professionals working in the area of dementia and related disorders. A total of 180 illiterate or low-literate participants (84 healthy-controls, 50 with dementia, and 46 with mild cognitive impairment [MCI]) were recruited from three different centers speaking Bengali, Hindi, and Kannada to validate the adapted version. RESULTS The optimal cut-off score for illiterate ACE-III to distinguish controls from dementia in all 3 languages was 75. The optimal cut-off scores in distinguishing between controls and MCI ranged from 79 to 82, with a sensitivity ranging from 93% to 99% and a specificity ranging from 72% to 99%. CONCLUSION The test is found to have good psychometric properties and is a reliable cognitive screening tool for identifying dementia and MCI in older adults with low educational backgrounds in the Indian context.
Collapse
|
4
|
Impact of bilingualism on prevalence of dementia and MCI: A community study from India. Alzheimers Dement 2022. [DOI: 10.1002/alz.065972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
5
|
A new insight into the diverse facets of microRNA-31 in oral squamous cell carcinoma. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2022. [DOI: 10.1186/s43042-022-00361-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Abstract
Background
Micro-RNAs (miRNAs) have been reported as an emerging biomarker in many cancer types. They are used as diagnostic and prognostic biomarkers and could be considered therapeutic targets in treating the same.
Main body
Studies have proven that miRNAs play an essential role in molecular cancer pathophysiology, including oral squamous cell carcinoma. Distinct expression profiles of different miRNAs have been demonstrated in oral squamous cell carcinoma. Among the miRNAs, the miR-31 has strong potential as a unique biomarker in head and neck squamous cell carcinoma, and the increased expression was correlated to a poor clinical outcome with a likely contribution to oral carcinogenesis.
Short conclusion
The recent research on different aspects of miR-31 as a biomarker and also its potential application in the development of therapy for oral squamous cell carcinoma has been focused in this review.
Graphical abstract
Collapse
|
6
|
Poor online reviews. Br Dent J 2022; 232:673. [PMID: 35624236 DOI: 10.1038/s41415-022-4309-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
7
|
A false sense of competence. Br Dent J 2022; 232:356. [PMID: 35338271 DOI: 10.1038/s41415-022-4109-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
8
|
Satisficing and bots. Br Dent J 2022; 232:68. [DOI: 10.1038/s41415-022-3891-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
9
|
|
10
|
|
11
|
|
12
|
Extensive intracranial calcification in idiopathic hypoparathyroidism : Rare presentation in an adolescent. Indian J Radiol Imaging 2021. [DOI: 10.4103/0971-3026.29083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
|
13
|
|
14
|
|
15
|
Search for bottom-type, vectorlike quark pair production in a fully hadronic final state in proton-proton collisions at
s=13 TeV. Int J Clin Exp Med 2020. [DOI: 10.1103/physrevd.102.112004] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
16
|
Purification, biochemical and biophysical characterization of lysosomal β-D-glucuronidase from an edible freshwater mussel, Lamellidens corrianus. Int J Biol Macromol 2020; 152:465-472. [PMID: 32084490 DOI: 10.1016/j.ijbiomac.2020.02.190] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 02/15/2020] [Accepted: 02/17/2020] [Indexed: 10/25/2022]
Abstract
A lysosomal glycosidase, β-glucuronidase, has been purified to homogeneity, from the soluble extracts of a freshwater mussel, L. corrianus, by a series of chromatography techniques involving phenyl-Sepharose, ion exchange, affinity and gel filtration chromatography. In native PAGE, β-glucuronidase resolved into a single band and the molecular mass determined by gel filtration chromatography was found to be 250 kDa. Zymogram analysis with 4-methyl umbelliferyl β-glucuronide substrate validated the purified enzyme as β-glucuronidase. In SDS-PAGE, the purified enzyme was resolved into four sub-units with molecular weights around 90, 75, 65, and 50 kDa, respectively, and two of the subunits (90 and 50 kDa) cross-reacted with human β-glucuronidase antiserum. The optimum pH and temperature of the purified glycosidase were 5.0 and 70 °C, respectively. The enzyme kinetics parameters, substrate affinity (KM) and maximum velocity (Vmax) of the purified protein estimated with p-nitrophenyl β-D-glucuronide were 0.457 mM and 0.11867 μmol-1 min-1 mL-1, respectively. The secondary structure of β-glucuronidase was determined in the far-UV range (190 nm to 230 nm) using CD spectroscopy. Heat denaturation plots determined by CD spectroscopy showed that the purified enzyme was stable up to 70 °C.
Collapse
|
17
|
Urological Surgery in CML- Is it Safe? THE JOURNAL OF THE ASSOCIATION OF PHYSICIANS OF INDIA 2019; 67:90-91. [PMID: 31311225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
|
18
|
Abstract
Co2 methanation-two edged sword to counter global warming and energy crisis.
Collapse
|
19
|
Thrombosed varicocele - a rare cause for acute scrotal pain: a case report. BMC Urol 2018; 18:34. [PMID: 29739377 PMCID: PMC5941692 DOI: 10.1186/s12894-018-0347-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Accepted: 05/02/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Acute scrotal pain has various causes. Testicular torsion, torsion of appendages and Epididymo-orchitis are common causes, while varicocele thromboses are a rare cause. Varicocele thromboses can occur post operatively or spontaneously. Five cases of post-operative and five cases of spontaneous thromboses have been described till date. The traditional advice in the management of thrombosed varicocele has been to manage it conservatively in all patients by drugs and scrotal support with little description of the surgical treatment. Herein, we present an unusual sixth case of spontaneous thromboses of varicocele and discuss its presentation and surgical management. We would also like to highlight the differentiating points between spontaneous thrombosis and post operative in vitro clot formation in the varicoceles, as these two entities can often be confused for each other. CASE PRESENTATION A 68 year-old man presented with excruciating scrotal pain of one week duration. Doppler study of scrotum revealed left varicocele with no evidence of Epididymo-orchitis. He was treated with intravenous antibiotics, analgesics and scrotal elevation. He had no relief and continued to have severe pain. Clinical examination was normal. Patient underwent exploratory surgery on a semi- emergent basis. Exploration revealed normal testis with thrombosed varicoceles. Patient underwent Varicocelectomy. Postoperatively patient had immediate pain relief. Histopathology revealed prominent thrombosed varicocele. A varicocelectomy specimen (done for primary infertility) was used for comparison. The differentiating points between the two entities were noted. CONCLUSION Spontaneous thrombosis of varicocele is a rare cause of acute scrotal pain. Pain out of proportion to clinical features is characteristic. Patients not responding to medical therapy may need varicocelectomy. Varicocelectomy may give immediate relief. Histopathology is useful in this disorder.
Collapse
|
20
|
Screening of ApoE genotypic frequency and analysis of neurotransmitter levels in Alzheimer’s patients of Coimbatore population. Parkinsonism Relat Disord 2018. [DOI: 10.1016/j.parkreldis.2017.11.160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
21
|
P338 Current management and use of oral immunotherapy (OIT) for peanut allergy in US patients. Ann Allergy Asthma Immunol 2017. [DOI: 10.1016/j.anai.2017.08.229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
22
|
Kinetic and biophysical characterization of a lysosomal α-l-fucosidase from the fresh water mussel, Lamellidens corrianus. Int J Biol Macromol 2017; 104:432-441. [DOI: 10.1016/j.ijbiomac.2017.06.050] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 05/19/2017] [Accepted: 06/08/2017] [Indexed: 02/04/2023]
|
23
|
Symplastic epididymal leiomyoma with bizarre cytology. Cytopathology 2017; 28:549-551. [PMID: 28868647 DOI: 10.1111/cyt.12464] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/23/2017] [Indexed: 11/29/2022]
|
24
|
Green Synthesized Zinc Oxide (ZnO) Nanoparticles Induce Oxidative Stress and DNA Damage in Lathyrus sativus L. Root Bioassay System. Antioxidants (Basel) 2017; 6:antiox6020035. [PMID: 28524089 PMCID: PMC5488015 DOI: 10.3390/antiox6020035] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 05/10/2017] [Accepted: 05/15/2017] [Indexed: 01/24/2023] Open
Abstract
Zinc oxide nanoparticles (ZnONP-GS) were synthesised from the precursor zinc acetate (Zn(CH3COO)2) through the green route using the milky latex from milk weed (Calotropis gigantea L. R. Br) by alkaline precipitation. Formation of the ZnONP-GS was monitored by UV-visible spectroscopy followed by characterization and confirmation by energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), and X-ray diffraction (XRD). Both the ZnONP-GS and the commercially available ZnONP-S (Sigma-Aldrich) and cationic Zn2+ from Zn(CH3COO)2 were tested in a dose range of 0–100 mg·L−1 for their potency (i) to induce oxidative stress as measured by the generation reactive oxygen species (ROS: O2•−, H2O2 and •OH), cell death, and lipid peroxidation; (ii) to modulate the activities of antioxidant enzymes: catalase (CAT), superoxide dismutase (SOD), guaiacol peroxidase (GPX), and ascorbate peroxidase (APX); and (iii) to cause DNA damage as determined by Comet assay in Lathyrus sativus L. root bioassay system. Antioxidants such as Tiron and dimethylthiourea significantly attenuated the ZnONP-induced oxidative and DNA damage, suggesting the involvement of ROS therein. Our study demonstrated that both ZnONP-GS and ZnONP-S induced oxidative stress and DNA damage to a similar extent but were significantly less potent than Zn2+ alone.
Collapse
|
25
|
Strengthening organizational ambidexterity with top management team mechanisms and processes. INTERNATIONAL JOURNAL OF HUMAN RESOURCE MANAGEMENT 2017. [DOI: 10.1080/09585192.2016.1277369] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
26
|
Corrosion and Nanomechanical Behaviors of 16.3Cr-0.22N-0.43C-1.73Mo Martensitic Stainless Steel. CORROSION SCIENCE AND TECHNOLOGY 2016. [DOI: 10.14773/cst.2016.15.6.281] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
|
27
|
What can be done when the cored specimen in a Frey procedure for chronic pancreatitis is reported as adenocarcinoma? Indian J Gastroenterol 2016; 35:486-488. [PMID: 27783352 DOI: 10.1007/s12664-016-0707-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Accepted: 10/06/2016] [Indexed: 02/04/2023]
Abstract
The aim of this study is to analyze the outcomes of patients with chronic pancreatitis who underwent the Frey procedure and who had a histologic evidence of adenocarcinoma in the cored out specimen.The type of analysis is retrospective. Out of 523 patients who underwent Frey procedure for chronic pancreatitis, seven (five males and two females; age range 42 to 54 years) had histologically proven adenocarcinoma. In the first four cases, intraoperative frozen section was not done. The diagnosis was made on routine histopathology and only one out of four could undergo attempted curative therapy. In the remaining three cases, intraoperative frozen section confirmation was available, and curative resection performed. Only four out of seven had a clear-cut mass lesion: (a) cancer can occur in chronic pancreatitis in the absence of a mass lesion and (b) intraoperative frozen section of the cored specimen is crucial to exercising curative therapeutic options and must be performed routinely. If frozen section is reported as adenocarcinoma, a head resection with repeat frozen of the margins of resection is appropriate. If the adenocarcinoma is reported on regular histopathology after several days, then a total pancreatectomy may be more appropriate.
Collapse
|
28
|
Urinary Bladder Xanthoma - Is Immunohistochemistry Necessary? Urol Case Rep 2016; 8:36-7. [PMID: 27462546 PMCID: PMC4949499 DOI: 10.1016/j.eucr.2016.06.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Revised: 06/10/2016] [Accepted: 06/10/2016] [Indexed: 12/20/2022] Open
Abstract
Urinary Bladder Xanthomas (UBX) are non-neoplastic reactive tumor like process. Isolated UBX is rare with only around 15 cases reported (Yu, Patel, & Bonert, 2015). UBX are reported in older patients who present with non specific symptoms like UTI or hematuria. Patients often have associated lipid anomalies. UBX have been vaguely described as yellowish white plaques or patches. Also, recent reports have stressed on the role of Immunohistochemistry in the diagnosis (Al-Daraji, Varghese, & Husain, 2007; Vimal, Masih, Manipadam, & Chacko, 2012). The objective of this report is to provide a cystoscopic view of the tumor which will enable easier identification and also to debate on the role of IHC in diagnosis.
Collapse
|
29
|
|
30
|
Abstract
A 30-year old infertile male was admitted for microsurgical sub inguinal varicocelectomy. Intraoperatively, two tubular structures of the caliber of neighboring veins were noted. They were distinct from the vas, which was carefully preserved. Histopathology revealed varicose veins along with two convoluted tubular structures lined by ciliated pseudo-stratified epithelium. There was an incomplete thin muscle coat. The lumina were irregular and contained no spermatozoa (Fig. 1). These structures were identified as paradidymis based on the location in the cord and microscopic morphology. We have tried to analyze the medico-legal significance of these benign lesions in our every day practice.
Collapse
|
31
|
A randomized control study comparing the pharyngolaryngeal morbidity of laryngeal mask airway versus endotracheal tube. Anesth Essays Res 2016; 10:189-94. [PMID: 27212745 PMCID: PMC4864682 DOI: 10.4103/0259-1162.174466] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Introduction: Endotracheal tube (ETT) has been associated with various pharyngolaryngeal morbidities (PLMs) following general anesthesia (GA). Laryngeal mask airway (LMA), currently the most commonly used supraglottic airway device, has several advantageous over the ETT but has been associated with varying results of PLM. The aim of our study was to compare the PLM between them and to know whether LMA is a better alternative. Materials and Methods: One hundred and seventy American Society of Anesthesiologists Grades 1 and 2 women scheduled for elective mastectomy were included in the study, 85 each in either group, E Group (intubated with ETT) and L Group (using LMA) on a random basis. All patients received GA with controlled ventilation using a muscle relaxant. PLMs such as hoarseness, pain on phonation, sore throat, and difficulty in swallowing were documented by an interview done postoperatively. Peroperative parameters such as intubation attempts, trauma during airway device insertion, and intraoperative incidents were also analyzed. A sample size of 85 patients in each group was calculated in order to achieve a study power of 0.8 and alpha level was taken as 0.05. Data were analyzed using SPSS version 16 using Chi-square test, Mann–Whitney U-test and Fisher's exact test were used as nonparametric tests. A two-tailed P< 0.05 was considered significant. Results: Patients in E Group had statistically significant increased incidence of a sore throat and voice complaints whereas L Group showed a statistically significant increase of swallowing problems. There was also a significant correlation between traumatic insertion and sore throat, pain on swallowing in the L Group, which could be due to direct trauma. Conclusions: ETT was associated with an increased incidence of voice problems and sore throat whereas LMA had an increased incidence of dysphagia and odynophagia. Use of LMA changes the pharyngolaryngeal profile to a more acceptable one.
Collapse
|
32
|
Influence of process parameters on sorption capacity of microwave activated biosorbents for urea recovery from human urine: a comparative study. ASIA-PAC J CHEM ENG 2015. [DOI: 10.1002/apj.1888] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
33
|
Abstract
Ruthenium on a base support was developed for the conversion of biomass derived levulinic acid to γ-valerolactone at low temperature and pressure. γ-Valerolactone synthesis which can replace ethanol in petrol and in the production of jet fuels.
Collapse
|
34
|
Abstract
Disseminated intravascular coagulation (DIC) is a reflection of an underlying systemic disorder which affects the coagulation system, simultaneously resulting in pro-coagulant activation, fibrinolytic activation, and consumption coagulopathy and finally may result in organ dysfunction and death. Though septicaemia is the most common cause of DIC, several other conditions can also lead to it. A diagnosis of DIC should be made only in the presence of a causative factor supported by repeated laboratory tests for coagulation profile and clotting factors. An effective scoring system helps to detect an overt DIC and a high score closely correlates with mortality. Treatment of DIC is aimed at combating the underlying disorder followed by supportive management. Low molecular weight heparin is advocated in special situations whereas anti-thrombin III and activated protein C are of doubtful value. Early diagnosis and prompt treatment backed by laboratory support can reduce the morbidity and mortality associated with it. The methodology of search for this review article involved hand search from text books and internet search using Medline (via PubMed) using key words DIC, thrombosis, fibrin degradation products, anti-thrombin and tissue factor for the last 25 years and also recent evidence-based reviews.
Collapse
|
35
|
Metallurgical Analysis of Defects in the Weld Joints of Large-Sized Maraging Steel Rocket Motor Casing. ACTA ACUST UNITED AC 2014. [DOI: 10.1007/s13632-014-0161-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
36
|
Note: A vortex cross-correlation flowmeter with enhanced turndown ratio. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2014; 85:066109. [PMID: 24985873 DOI: 10.1063/1.4884078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In the present study, a novel dual sensor vortex cross correlation technique is suggested and implemented to extend the lower operating range of the flowmeter. The first sensor located at an optimum streamwise location of 0.85 times the width of the bluff body is employed to compute the vortex shedding frequency under high Reynolds number conditions. Under low Reynolds number conditions, when the strength of the vortex signal is poor, the outputs from the two piezoelectric sensors are correlated to compute the vortex convection velocity. This vortex convection velocity is used to compute the volume flow rate. This novel dual flow rate estimation technique has demonstrated its robustness under low Reynolds number flow conditions with a remarkable turndown ratio of 1:66 as compared to 1:20 for conventional vortex flowmeters.
Collapse
|
37
|
Hydroxyapatite as a novel support for Ru in the hydrogenation of levulinic acid to γ-valerolactone. CATAL COMMUN 2014. [DOI: 10.1016/j.catcom.2014.03.005] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
|
38
|
|
39
|
Ruthenium/magnesium–lanthanum mixed oxide: An efficient reusable catalyst for oxidation of alcohols by using molecular oxygen. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.molcata.2012.03.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
40
|
281 INCREASED ACUTE SYMPTOMS OF RADIATION PNEUMONITIS WITH CONCURRENT CHEMORADIOTHERAPY VS. RADIOTHERAPY ALONE IN A MURINE MODEL OF FRACTIONATED SUB-TOTAL THORACIC IGRT. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)70244-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
41
|
Tobacco Related Habits among First Degree Relatives of Patients Undergoing Surgery for Advanced Head and Neck Malignancies in India. Asian Pac J Cancer Prev 2012; 13:217-20. [DOI: 10.7314/apjcp.2012.13.1.217] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
42
|
Satisfaction with appearance before and after orthognathic procedures in cleft patients. Br J Oral Maxillofac Surg 2011. [DOI: 10.1016/j.bjoms.2011.03.245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
43
|
Review of nature of cardiology referrals to OMFS for dental assessment/treatment. Br J Oral Maxillofac Surg 2011. [DOI: 10.1016/j.bjoms.2011.03.243] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
44
|
An efficient iterative algorithm for computation of scattering from dielectric objects. OPTICS EXPRESS 2011; 19:3304-3315. [PMID: 21369153 DOI: 10.1364/oe.19.003304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We have developed an efficient iterative algorithm for electromagnetic scattering of arbitrary but relatively smooth dielectric objects. The algorithm iteratively adapts the equivalent surface currents until the electromagnetic fields inside and outside the dielectric objects match the boundary conditions. Theoretical convergence is analyzed for two examples that solve scattering of plane waves incident upon air/dielectric slabs of semi-infinite and finite thicknesses. We applied the iterative algorithm for simulation of sinusoidally-perturbed dielectric slab on one side and the method converged for such unsmooth surfaces. We next simulated the shift in radiation pattern of a 6-inch dielectric lens for different offsets of the feed antenna on the focal plane. The result is compared to that of the Geometrical Optics (GO).
Collapse
|
45
|
67 A simple technique for the planning and placement of distractor devices in midface distraction osteogenesis. Br J Oral Maxillofac Surg 2010. [DOI: 10.1016/s0266-4356(10)60068-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
46
|
CA 19-9 to differentiate benign and malignant masses in chronic pancreatitis: is there any benefit? Indian J Gastroenterol 2009; 28:24-7. [PMID: 19529898 DOI: 10.1007/s12664-009-0005-4] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2008] [Revised: 11/11/2008] [Accepted: 12/29/2008] [Indexed: 02/04/2023]
Abstract
BACKGROUND The role of the tumor marker CA 19-9 in differentiating benign from malignant masses in chronic pancreatitis has not been extensively studied. AIM This study aims at assessing the accuracy of CA 19-9 in differentiating inflammatory head masses in chronic pancreatitis from superimposed carcinomas on chronic pancreatitis. METHODS The data of 84 consecutive patients who had mass lesions in chronic pancreatitis were analyzed to determine the sensitivity, specificity and predictive values at cut-off values of 37, 100, 200 and 300 U/mL. Receiver operating characteristic (ROC) curves were used to assess the sensitivity and specificity. RESULTS There were 50 benign masses and 34 malignancies. The overall sensitivity and specificity of CA 19-9 for cancer was 68% and 70%, respectively. There was a higher positivity of CA 19-9 in cancers than in benign masses (23/34; 68% versus 15/50; 30%, P<0.01) with cut-off values of 37 U/mL. Higher positivity rates were obtained in cancers using other cut-off values such as 100, 200 and 300 U/mL. Values over 300 U/mL were 100% specific for malignancy, but occurred in only 5 (of whom had distant metastases) of 34 patients. CONCLUSION CA 19-9 level in excess of 300 U/mL in mass lesions in chronic pancreatitis was always indicative of malignancy.
Collapse
|
47
|
Solvent-free aerobic oxidation of ethylbenzene over supported Ni catalysts using molecular oxygen at atmospheric pressure. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/s1003-9953(08)60067-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
48
|
Surgical management of chronic pancreatitis with portal hypertension--a 19-year experience. Surgery 2007; 143:252-8. [PMID: 18242342 DOI: 10.1016/j.surg.2007.08.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2006] [Revised: 08/23/2007] [Accepted: 08/25/2007] [Indexed: 02/07/2023]
Abstract
BACKGROUND The presence of portal hypertension in chronic pancreatitis imposes great challenges on the clinician. The objective of this retrospective analysis is to identify the demographics, presentation, management and outcomes among patients suffering from chronic pancreatitis with associated portal hypertension. PATIENTS The data of fifty-seven patients (36 males, 21 females, age range 23 to 54 years; median 34.5) with chronic pancreatitis and portal hypertension who were operated either for intractable pain or complications over a 19-year period were analyzed. The etiology was alcohol abuse in 28 and idiopathic (tropical) in the remainder. The commonest presentation was abdominal pain in 52 patients (91%). Only 11 patients presented with gastrointestinal bleeding (19%), and they were managed by endoscopic therapy (sclerotherapy, banding, or ethoxysklerol injection). The surgical procedures were: 43 Frey procedures, 11 lateral pancreaticojejunostomies, and 3 Whipple's resections with additional procedures (cyst/biliary drainage or distal pancreatectomy) when appropriate. Direct operations for portal hypertension were required in only 19 patients (splenectomy (n = 15) and gastric devascularization (n = 4)). RESULTS Operating times ranged from 210 to 490 minutes (median 320), yet only 11 patients required blood transfusion. There were 24 complications in 18 patients, and hospital stay ranged between 11 and 62 days (median 18.5). One patient died of liver failure on day 17 after operation. Forty-nine out of 53 patients available for follow-up had excellent or good pain relief. CONCLUSION Surgery provided good relief of pain and complications in patients with chronic pancreatitis and portal hypertension. Isolated surgery for portal hypertension alone was not required in any of the patients.
Collapse
|
49
|
Pure H2 Production by Decomposition of Methane Over Ni Supported on Hydroxyapatite Catalysts. Catal Letters 2007. [DOI: 10.1007/s10562-007-9334-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
50
|
Intussusception due to ileal metastases from renal cell carcinoma. TROPICAL GASTROENTEROLOGY : OFFICIAL JOURNAL OF THE DIGESTIVE DISEASES FOUNDATION 2007; 28:35-6. [PMID: 17896609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Small bowel secondaries from renal cell carcinoma are rare. Patients usually present with features of intestinal obstruction or GI bleeding. Management should be aggressive since metastasectomy can improve the quality of life and survival.
Collapse
|