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Russian Collaborative Development of Reproduction Technologies for the Sustainable Management of Amphibian Biodiversity

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Asian Herpetological Research 2023年第1期14卷 103-115页

作者： Victor K.UTESHEV Edith N.GAKHOVA Ludmila I.KRAMAROVA Natalia V.SHISHOVA Svetlana a.kaurova Elena A.KIDOVA Artem A.KIDOV Robert K.BROWNE Institute of Cell Biophysics Russian Academy of SciencesPushchinoMoscow 142290Russia Institute of Theoretical and Experimental Biophysics Russian Academy of SciencesPushchinoMoscow 142290Russia Russian State Agrarian University-K.A.Timiryazev Agricultural Academy Moscow 127550Russia Sustainability America La Isla RoadCorozal DistrictBelize

Reproduction technologies(RTs)can provide for the reliable reproduction of amphibians,as well as perpetuation of species genetic variation with the use of *** 1982,in anticipation of the biodiversity conservation crisis,major Russian institutions collaborated in a dynamic program to develop and implement RTs for the sustainable management of amphibian *** initial primary focus was the captive breeding of threatened Russian endemic anuran and caudate species,using RTs that varied from environmental manipulation to the use of exogenous gonadotropic hormones to stimulate *** species were mostly from Palearctic or cool mountain regions,but also included a wide range of species from warm *** early achievements included the successful cryopreservation of anuran spermatozoa and anuran diploid pluripotent cell nuclei,in order to store both the matrilineal and patrilineal genomes in biobanks,with their subsequent development to the blastula stage after implantation into enucleated *** the turn of the 21st Century,in support of the priorities of the Amphibian Conservation Action Plan(2007),we developed RTs for the refrigerated storage of testicular or urinary spermatozoa for days to weeks at 4℃,the cryopreservation of urinary spermatozoa using anovel cryoprotectant,the in vitro fertilisation of hormonally induced oocytes either fresh or after refrigerated ex situ or in situ storage,and the artificial insemination of salamanders with fresh *** this article,we describe previously unpublished techniques and techniques from obscure Russian sources.

关键词： artificial fertilisation assisted reproductive technologies(ART) cryopreservation gonadotropic hormones oocytes spermatozoa storage urinary spermatozoa

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Influence of monovalent Bi^+doping on real composition,point defects,and photoluminescence in TlCdCl3 and TlCdI3 single crystals

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Science China Materials 2017年第12期60卷 1253-1263页

作者： Daria N.Vtyurina Polina A.Eistrikh-Geller Galina M.Kuz mlcheva Victor B.Rybakov Evgeny V.Khramov irin. a.kaurova Dmitry Yu.Chernyshov Vladimir N.Korchak Semenov Institute of Chemical Physics Russian Academy of SciencesMOSCOW 119991Russia Institute of Fine Chemical Technologies Moscow Technological UniversityMoscow 119571Russia Lomonosov State University Moscow 119992Russia National Research Center《Kurchatov Instituters》 Moscow 123182Russia Swiss-Norwegian Beamlines at the European Synchrotron Radiation Facility Grenoble 38000France

The structural features and real compositions with point defects of Bi+-doped TlCdCl_3 and TlCdI_3 single crystals, grown by the Bridgman-Stockbarger technique, are first studied using the X-ray diffraction, X-ray synchrotron radiation, and EXAFS/XANES spectroscopy. In the structures of Bi^+-doped TlCdCl_3 and TlCdI_3 crystals, the Cd, Cl, and I sites are found to be defect-free. The vacancies in the Tl sites and interstitial Bi atoms located in the vicinity of the Tl sites are detected in the structures of both samples. In the Bi^+-doped TlCdCl_3, the presence of a small amount of Bi^+ ions in the Tl^+ sites is possible. The correlation between photoluminescence bands and point defects in the refined structures are determined. Photoluminescence spectra and decay kinetics of the Bi+-doped TlCdCl_3 and TlCdI_3 demonstrate that they are attractive materials for potential applications in photonics.

关键词： single crystal growth doping crystal structure point defects photoluminescence

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