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Baj J, Forma A, Kobak J, Tyczyńska M, Dudek I, Maani A, Teresiński G, Buszewicz G, Januszewski J, Flieger J. Toxic and Nutritional Optic Neuropathies—An Updated Mini-Review. IJERPH 2022; 19:ijerph19053092. [PMID: 35270784 PMCID: PMC8910489 DOI: 10.3390/ijerph19053092] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 02/27/2022] [Accepted: 03/03/2022] [Indexed: 12/20/2022]
Abstract
Optic neuropathies constitute a group of conditions with various etiologies and might be caused by different factors; we can distinguish the genetic and acquired causes of optic neuropathies. Even though the symptoms are not highly specific, this condition is primarily characterized by unilateral or bilateral vision loss with worsening color detection. The loss may be acute or gradual depending on the causation. In this article, we included a specification of toxic optic neuropathy (TON) mainly triggered by alcohol abuse and also the usage of other substances, including drugs or methanol, as well as intoxication by metals, organic solvents, or carbon dioxide. Nutritional deficiencies, vitamin absorption disorder, and anemia, which usually appear during excessive alcohol intake, and their effect on the etiology of the optic neuropathy have been likewise discussed.
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Affiliation(s)
- Jacek Baj
- Department of Human Anatomy, Medical University of Lublin, Jaczewskiego 4, 20-090 Lublin, Poland; (J.B.); (A.M.)
| | - Alicja Forma
- Department of Forensic Medicine, Medical University of Lublin, Jaczewskiego 8b, 20-090 Lublin, Poland; (J.K.); (M.T.); (I.D.); (G.T.); (G.B.); (J.J.)
- Correspondence:
| | - Joanna Kobak
- Department of Forensic Medicine, Medical University of Lublin, Jaczewskiego 8b, 20-090 Lublin, Poland; (J.K.); (M.T.); (I.D.); (G.T.); (G.B.); (J.J.)
| | - Magdalena Tyczyńska
- Department of Forensic Medicine, Medical University of Lublin, Jaczewskiego 8b, 20-090 Lublin, Poland; (J.K.); (M.T.); (I.D.); (G.T.); (G.B.); (J.J.)
| | - Iga Dudek
- Department of Forensic Medicine, Medical University of Lublin, Jaczewskiego 8b, 20-090 Lublin, Poland; (J.K.); (M.T.); (I.D.); (G.T.); (G.B.); (J.J.)
| | - Amr Maani
- Department of Human Anatomy, Medical University of Lublin, Jaczewskiego 4, 20-090 Lublin, Poland; (J.B.); (A.M.)
| | - Grzegorz Teresiński
- Department of Forensic Medicine, Medical University of Lublin, Jaczewskiego 8b, 20-090 Lublin, Poland; (J.K.); (M.T.); (I.D.); (G.T.); (G.B.); (J.J.)
| | - Grzegorz Buszewicz
- Department of Forensic Medicine, Medical University of Lublin, Jaczewskiego 8b, 20-090 Lublin, Poland; (J.K.); (M.T.); (I.D.); (G.T.); (G.B.); (J.J.)
| | - Jacek Januszewski
- Department of Forensic Medicine, Medical University of Lublin, Jaczewskiego 8b, 20-090 Lublin, Poland; (J.K.); (M.T.); (I.D.); (G.T.); (G.B.); (J.J.)
| | - Jolanta Flieger
- Department of Analytical Chemistry, Medical University of Lublin, Chodźki 4A, 20-093 Lublin, Poland;
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Poznańska-Kakareko M, Wiśniewski K, Szarmach D, Witkowska A, Kakareko T, Jermacz Ł, Kobak J. Importance of substratum quality for potential competitive niche overlap between native and invasive unionid mussels in Europe. Sci Total Environ 2021; 799:149345. [PMID: 34426362 DOI: 10.1016/j.scitotenv.2021.149345] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 07/22/2021] [Accepted: 07/26/2021] [Indexed: 06/13/2023]
Abstract
Infaunal freshwater mussels are highly threatened and declining worldwide. One of the potential threats to mussels consists of biological invasions. We intended to investigate the habitat overlap and behavioural differences between native (Unio pictorum, Unio tumidus, Anodonta anatina, Anodonta cygnea) and invasive (Asian Sinanodonta woodiana) unionid bivalves to determine potential sources of competition. Furthermore, we investigated differences between S. woodiana from the established population in artificially heated waters and from the recent population in a natural thermal regime. We used pairwise choice tests on mud, medium, coarse and very coarse sand, mixture of medium and coarse sand, fine, medium and coarse gravel, and observed mussel locomotion and burrowing in preferred and non-preferred substrata. All species generally preferred fine-grained materials. The widest preference range was exhibited by S. woodiana (both populations), whereas A. cygnea was the most selective. The preferences of the cold-water population of S. woodiana were shifted towards coarser materials compared to conspecifics from the heated waters, and highly overlapped with the preferences of the native species. Anodonta cygnea most often moved horizontally and spent the shortest time deeply burrowed. Both Unio species were deeply burrowed for the largest amount of time and the horizontal locomotion of U. tumidus was the lowest among the test species. Sinanodonta woodiana, especially from the heated water population, exhibited relatively weak locomotion (compared to A. cygnea) and burrowing (compared to Unio spp. and A. anatina). Deep burrowing was more common on fine-grained materials. Our results suggest that the native mussels can be threatened by S. woodiana due to their overlapping habitat preferences, potentially hindering habitat separation. However, mobile native mussels may be capable of migrating and avoiding competition. Accumulating knowledge of the biology and ecology of freshwater mussels could contribute to the creation and improvement of conservation plans to protect these threatened animals.
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Affiliation(s)
- M Poznańska-Kakareko
- Nicolaus Copernicus University, Faculty of Biological and Veterinary Sciences, Department of Invertebrate Zoology and Parasitology, Lwowska 1, 87-100 Toruń, Poland.
| | - K Wiśniewski
- Nicolaus Copernicus University, Faculty of Biological and Veterinary Sciences, Department of Invertebrate Zoology and Parasitology, Lwowska 1, 87-100 Toruń, Poland
| | - D Szarmach
- Nicolaus Copernicus University, Faculty of Biological and Veterinary Sciences, Department of Invertebrate Zoology and Parasitology, Lwowska 1, 87-100 Toruń, Poland
| | - A Witkowska
- Nicolaus Copernicus University, Faculty of Biological and Veterinary Sciences, Department of Invertebrate Zoology and Parasitology, Lwowska 1, 87-100 Toruń, Poland
| | - T Kakareko
- Nicolaus Copernicus University, Faculty of Biological and Veterinary Sciences, Department of Ecology and Biogeography, Lwowska 1, 87-100 Toruń, Poland
| | - Ł Jermacz
- Nicolaus Copernicus University, Faculty of Biological and Veterinary Sciences, Department of Ecology and Biogeography, Lwowska 1, 87-100 Toruń, Poland
| | - J Kobak
- Nicolaus Copernicus University, Faculty of Biological and Veterinary Sciences, Department of Invertebrate Zoology and Parasitology, Lwowska 1, 87-100 Toruń, Poland
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Napiórkowska T, Templin J, Grodzicki P, Kobak J. Thermal preferences of two spider species: an orb-web weaver and a synanthropic funnel-web weaver. The European Zoological Journal 2021. [DOI: 10.1080/24750263.2021.1950223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Affiliation(s)
- T. Napiórkowska
- Department of Invertebrate Zoology and Parasitology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, Poland
| | - J. Templin
- Department of Invertebrate Zoology and Parasitology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, Poland
| | - P. Grodzicki
- Department of Animal Physiology and Neurobiology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, Poland
| | - J. Kobak
- Department of Invertebrate Zoology and Parasitology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, Poland
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Cichocka JM, Bielecki A, Świątek P, Jabłońska-Barna I, Kobak J, Hildebrand J, Dmitryjuk M, Strużyński W, Rost-Roszkowska M. The activity of hydrolytic enzymes in the digestive system of Acanthobdellida, Branchiobdellida and Hirudinida (Annelida, Clitellata) – considerations on similarity and phylogeny. The European Zoological Journal 2021. [DOI: 10.1080/24750263.2020.1851402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Affiliation(s)
- J. M. Cichocka
- Department of Zoology, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
- XI High School, Olsztyn, Poland
| | - A. Bielecki
- Department of Zoology, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - P. Świątek
- Faculty of Natural Sciences, Institute of Biology, Biotechnology and Environmental Protection, University of Silesia in Katowice, Katowice, Poland
| | - I. Jabłońska-Barna
- Department of Tourism, Recreation and Ecology, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - J. Kobak
- Department of Invertebrate Zoology and Parasitology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, Toruń, Poland
| | - J. Hildebrand
- Department of Parasitology, Institute of Genetics and Microbiology, University of Wrocław, Wrocław, Poland
| | - M. Dmitryjuk
- Department of Biochemistry, Faculty of Biology and Biotechnology, University of Warmia and Mazury, Olsztyn, Poland
| | - W. Strużyński
- Department of Animal Environment Biology, Institute of Animal Sciences, Warsaw University of Life Sciences, Warsaw, Poland
| | - M. Rost-Roszkowska
- Faculty of Natural Sciences, Institute of Biology, Biotechnology and Environmental Protection, University of Silesia in Katowice, Katowice, Poland
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Ragunathan G, Kobak J, Gillard G, Pacuski W, Sobczak K, Borysiuk J, Skolnick MS, Chekhovich EA. Direct Measurement of Hyperfine Shifts and Radio Frequency Manipulation of Nuclear Spins in Individual CdTe/ZnTe Quantum Dots. Phys Rev Lett 2019; 122:096801. [PMID: 30932537 DOI: 10.1103/physrevlett.122.096801] [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] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 01/13/2019] [Indexed: 06/09/2023]
Abstract
We achieve direct detection of electron hyperfine shifts in individual CdTe/ZnTe quantum dots. For the previously inaccessible regime of strong magnetic fields B_{z}≳0.1 T, we demonstrate robust polarization of a few-hundred-particle nuclear spin bath, with an optical initialization time of ∼1 ms and polarization lifetime exceeding ∼1 s. Nuclear magnetic resonance spectroscopy of individual dots reveals strong electron-nuclear interactions characterized by Knight fields |B_{e}|≳50 mT, an order of magnitude stronger than in III-V semiconductor quantum dots. Our studies confirm II-VI semiconductor quantum dots as a promising platform for hybrid electron-nuclear spin qubit registers, combining the excellent optical properties comparable to III-V dots and the dilute nuclear spin environment similar to group-IV semiconductors.
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Affiliation(s)
- G Ragunathan
- Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom
| | - J Kobak
- Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, ul. Pasteura 5, 02-093 Warsaw, Poland
| | - G Gillard
- Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom
| | - W Pacuski
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, ul. Pasteura 5, 02-093 Warsaw, Poland
| | - K Sobczak
- Biological and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, ul. Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - J Borysiuk
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, ul. Pasteura 5, 02-093 Warsaw, Poland
| | - M S Skolnick
- Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom
| | - E A Chekhovich
- Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom
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Kobak J, Jermacz Ł, Rutkowska D, Pawłowska K, Witkowska L, Poznańska M. Impact of predators and competitors on the depth selection by two invasive gammarids. J Zool (1987) 2016. [DOI: 10.1111/jzo.12409] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- J. Kobak
- Department of Invertebrate Zoology Faculty of Biology and Environmental Protection Nicolaus Copernicus University in Toruń Toruń Poland
| | - Ł. Jermacz
- Department of Invertebrate Zoology Faculty of Biology and Environmental Protection Nicolaus Copernicus University in Toruń Toruń Poland
| | - D. Rutkowska
- Department of Invertebrate Zoology Faculty of Biology and Environmental Protection Nicolaus Copernicus University in Toruń Toruń Poland
| | - K. Pawłowska
- Department of Invertebrate Zoology Faculty of Biology and Environmental Protection Nicolaus Copernicus University in Toruń Toruń Poland
| | - L. Witkowska
- Department of Invertebrate Zoology Faculty of Biology and Environmental Protection Nicolaus Copernicus University in Toruń Toruń Poland
| | - M. Poznańska
- Department of Invertebrate Zoology Faculty of Biology and Environmental Protection Nicolaus Copernicus University in Toruń Toruń Poland
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Kobak J, Smoleński T, Goryca M, Rousset JG, Pacuski W, Bogucki A, Oreszczuk K, Kossacki P, Nawrocki M, Golnik A, Płachta J, Wojnar P, Kruse C, Hommel D, Potemski M, Kazimierczuk T. Comparison of magneto-optical properties of various excitonic complexes in CdTe and CdSe self-assembled quantum dots. J Phys Condens Matter 2016; 28:265302. [PMID: 27173643 DOI: 10.1088/0953-8984/28/26/265302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We present a comparative study of two self-assembled quantum dot (QD) systems based on II-VI compounds: CdTe/ZnTe and CdSe/ZnSe. Using magneto-optical techniques we investigated a large population of individual QDs. The systematic photoluminescence studies of emission lines related to the recombination of neutral exciton X, biexciton XX, and singly charged excitons (X(+), X(-)) allowed us to determine average parameters describing CdTe QDs (CdSe QDs): X-XX transition energy difference 12 meV (24 meV); fine-structure splitting δ1=0.14 meV (δ1=0.47 meV); g-factor g = 2.12 (g = 1.71); diamagnetic shift γ=2.5 μeV T(-2) (γ =1.3 μeV T(-2)). We find also statistically significant correlations between various parameters describing internal structure of excitonic complexes.
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Affiliation(s)
- J Kobak
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura 5, 02-093 Warsaw, Poland
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Adamiak‐Brud Ż, Bielecki A, Kobak J, Jabłońska‐Barna I. Rate of short‐term colonization and distribution of leeches (Clitellata: Hirudinida) on artificial substrates. J Zool (1987) 2016. [DOI: 10.1111/jzo.12341] [Citation(s) in RCA: 4] [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)
- Ż. Adamiak‐Brud
- Department of Zoology Faculty of Biology University of Warmia and Mazury Olsztyn Poland
| | - A. Bielecki
- Department of Zoology Faculty of Biology University of Warmia and Mazury Olsztyn Poland
| | - J. Kobak
- Department of Invertebrate Zoology Faculty of Biology and Environmental Protection Nicolaus Copernicus University Toruń Poland
| | - I. Jabłońska‐Barna
- Department of Applied Ecology Faculty of Environmental Sciences University of Warmia and Mazury Olsztyn Poland
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9
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Smoleński T, Kazimierczuk T, Kobak J, Goryca M, Golnik A, Kossacki P, Pacuski W. Magnetic ground state of an individual Fe(2+) ion in strained semiconductor nanostructure. Nat Commun 2016; 7:10484. [PMID: 26818580 PMCID: PMC4738340 DOI: 10.1038/ncomms10484] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [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: 06/11/2015] [Accepted: 12/17/2015] [Indexed: 11/15/2022] Open
Abstract
Single impurities with nonzero spin and multiple ground states offer a degree of freedom that can be utilized to store the quantum information. However, Fe(2+) dopant is known for having a single nondegenerate ground state in the bulk host semiconductors and thus is of little use for spintronic applications. Here we show that the well-established picture of Fe(2+) spin configuration can be modified by subjecting the Fe(2+) ion to high strain, for example, produced by lattice mismatched epitaxial nanostructures. Our analysis reveals that high strain induces qualitative change in the ion energy spectrum and results in nearly doubly degenerate ground state with spin projection Sz= ± 2. We provide an experimental proof of this concept using a new system: a strained epitaxial quantum dot containing individual Fe(2+) ion. Magnetic character of the Fe(2+) ground state in a CdSe/ZnSe dot is revealed in photoluminescence experiments by exploiting a coupling between a confined exciton and the single-iron impurity. We also demonstrate that the Fe(2+) spin can be oriented by spin-polarized excitons, which opens a possibility of using it as an optically controllable two-level system free of nuclear spin fluctuations.
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Affiliation(s)
- T. Smoleński
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura 5, 02-093 Warsaw, Poland
| | - T. Kazimierczuk
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura 5, 02-093 Warsaw, Poland
| | - J. Kobak
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura 5, 02-093 Warsaw, Poland
| | - M. Goryca
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura 5, 02-093 Warsaw, Poland
| | - A. Golnik
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura 5, 02-093 Warsaw, Poland
| | - P. Kossacki
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura 5, 02-093 Warsaw, Poland
| | - W. Pacuski
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura 5, 02-093 Warsaw, Poland
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Affiliation(s)
- J. Kobak
- Faculty of Biology and Environmental Protection; Department of Invertebrate Zoology; Nicolaus Copernicus University; Toruń Poland
| | - Ł. Jermacz
- Faculty of Biology and Environmental Protection; Department of Invertebrate Zoology; Nicolaus Copernicus University; Toruń Poland
| | - A. Dzierżyńska-Białończyk
- Faculty of Biology and Environmental Protection; Department of Invertebrate Zoology; Nicolaus Copernicus University; Toruń Poland
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Kobak J, Smoleński T, Goryca M, Papaj M, Gietka K, Bogucki A, Koperski M, Rousset JG, Suffczyński J, Janik E, Nawrocki M, Golnik A, Kossacki P, Pacuski W. Designing quantum dots for solotronics. Nat Commun 2015; 5:3191. [PMID: 24463946 PMCID: PMC3916836 DOI: 10.1038/ncomms4191] [Citation(s) in RCA: 113] [Impact Index Per Article: 12.6] [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: 07/24/2013] [Accepted: 01/02/2014] [Indexed: 01/28/2023] Open
Abstract
Solotronics, optoelectronics based on solitary dopants, is an emerging field of research and technology reaching the ultimate limit of miniaturization. It aims at exploiting quantum properties of individual ions or defects embedded in a semiconductor matrix. It has already been shown that optical control of a magnetic ion spin is feasible using the carriers confined in a quantum dot. However, a serious obstacle was the quenching of the exciton luminescence by magnetic impurities. Here we show, by photoluminescence studies on thus-far-unexplored individual CdTe dots with a single cobalt ion and CdSe dots with a single manganese ion, that even if energetically allowed, nonradiative exciton recombination through single-magnetic-ion intra-ionic transitions is negligible in such zero-dimensional structures. This opens solotronics for a wide range of as yet unconsidered systems. On the basis of results of our single-spin relaxation experiments and on the material trends, we identify optimal magnetic-ion quantum dot systems for implementation of a single-ion-based spin memory. Single-atom dopants embedded in a semiconductor matrix are of potential use for optical, spintronics as well as information storage applications. Here, Kobak et al. realize CdTe and CdSe quantum dots with single cobalt and manganese ions and show how the quantum dot design influences single-spin relaxation time.
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Affiliation(s)
- J Kobak
- 1] Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, Warsaw 00-681, Poland [2]
| | - T Smoleński
- 1] Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, Warsaw 00-681, Poland [2]
| | - M Goryca
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, Warsaw 00-681, Poland
| | - M Papaj
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, Warsaw 00-681, Poland
| | - K Gietka
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, Warsaw 00-681, Poland
| | - A Bogucki
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, Warsaw 00-681, Poland
| | - M Koperski
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, Warsaw 00-681, Poland
| | - J-G Rousset
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, Warsaw 00-681, Poland
| | - J Suffczyński
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, Warsaw 00-681, Poland
| | - E Janik
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, Warsaw 00-681, Poland
| | - M Nawrocki
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, Warsaw 00-681, Poland
| | - A Golnik
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, Warsaw 00-681, Poland
| | - P Kossacki
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, Warsaw 00-681, Poland
| | - W Pacuski
- Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, Warsaw 00-681, Poland
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Jermacz U, Dzierzy ska A, Kakareko T, Pozna ska M, Kobak J. The art of choice: predation risk changes interspecific competition between freshwater amphipods. Behav Ecol 2015. [DOI: 10.1093/beheco/arv009] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Wołczuk K, Kobak J. Post-natal growth of the gastrointestinal tract of the Siberian hamster: morphometric analysis. Anat Histol Embryol 2013; 43:453-67. [PMID: 24261618 DOI: 10.1111/ahe.12096] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Accepted: 10/25/2013] [Indexed: 12/01/2022]
Abstract
Post-natal growth of the gastrointestinal tract of the Siberian hamster was studied in newborn and 3-, 7-, 14-, 21-, 42- and 90-day-old animals. Morphometric measurements and calculations were carried out: length and internal surface of gastrointestinal tract segments, size (height, width, surface) and density of villi as well as allometric growth rate of the length and internal surface of the segments with respect to the body mass. The fastest growth rate of the gastrointestinal tract segments was noticed during the first 3 days of the post-natal life. Nevertheless, significant regional differences in their growth rate were found. The increase in the length and internal surface of the large intestine was fastest, while the smallest increase was observed in the oesophagus. All segments of the gastrointestinal tract except oesophagus exhibited a positive allometric relationship to the body mass from birth till final weaning, whereas during the post-weaning period, the increase was isometric. Thus, at birth, the gastrointestinal tract segments were relatively smaller compared with those observed in adults, but then, the gastrointestinal tract grew faster than the rest of the body and reached its adult proportions just before the transition to solid food. Most probably, reaching the adult structure of the gastrointestinal tract before the final weaning is an essential condition for the proper growth of an organism after the weaning.
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Affiliation(s)
- K Wołczuk
- Laboratory of Histology and Embryology of Vertebrates, Faculty of Biology and Environment Protection, Nicolaus Copernicus University, Lwowska 1, 87-100, Torun, Poland
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Wołczuk K, Wilczyńska B, Jaroszewska M, Kobak J. Morphometric characteristics of the small and large intestines of Mus musculus during postnatal development. Folia Morphol (Warsz) 2011; 70:252-259. [PMID: 22117242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The objective of this study was to investigate the size of the small and large intestine in postnatal development of Mus musculus mice. The gut was obtained from 2-, 4-, 6-, and 12-week-old animals. The morphometric analysis was performed at microscopic level. Measurements and calculations included dimensions of villi (height, diameter) and their number per 1 mm(2) surface area in the proximal, middle, and distal section of the small intestine, as well as the length and surface area (external and internal) of the small and large intestines. To find the allometric relationship between the size of the small and large intestines and body mass, reduced major axis regression was applied. The length and surface area of both intestinal segments gradually increased with age. The increase in the internal surface area of the small intestine was the result of lengthening of the intestine and increasing diameter of the villi in its proximal and middle sections. No increase in villus height during the studied period was detected. A marked increase in the size of the intestinal segments was observed between the 2(nd) and 4(th) weeks of life, when the length doubled and the surface area tripled in size. Allometric analysis revealed that the increase in length and internal surface area of the small and large intestines was more rapid than the body mass increase during the weaning period, while it was not different from isometry after the weaning. In conclusion, the greatest changes in the structure and size of the small and large intestines of mice occurred in the weaning period. During this period these two segments of intestine grew faster than the rest of the body and reached adult proportions.
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Affiliation(s)
- K Wołczuk
- Laboratory of Histology and Embryology of Vertebrates, Institute of Ecology and Environmental Protection, Faculty of Biology and Earth Sciences, Nicolaus Corpenicus University, Torun, Poland.
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Affiliation(s)
- J. Kobak
- Department of Invertebrate Zoology, Institute of General and Molecular Biology, Nicolaus Copernicus University, Toruń, Poland
| | - T. Kakareko
- Department of Hydrobiology, Institute of Ecology and Environmental Protection, Nicolaus Copernicus University, Toruń, Poland
| | - M. Poznańska
- Department of Invertebrate Zoology, Institute of General and Molecular Biology, Nicolaus Copernicus University, Toruń, Poland
| | - J. Żbikowski
- Department of Hydrobiology, Institute of Ecology and Environmental Protection, Nicolaus Copernicus University, Toruń, Poland
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