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A Review on the Taxonomic,Evolutionary and Phytogeographic Studies of the Lotus Plant(Nelumbonaceae:Nelumbo)

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Acta Geologica Sinica(English Edition) 2014年第4期88卷 1252-1261页

作者： LI Ya Popova svetlana YAO Jianxin LI Chengsen Institute of Geology Chinese Academy of Geological Sciences Key Laboratory of Stratigraphy and Paleontology Ministry of Land and Resources of the People's Republic of China State Key Laboratory of Systematic and Evolutionary Botany Institute of BotanyChinese Academy of Sciences Laboratory of Palaeobotany Komarov Botanical InstituteRussian Academy of Sciences

Nelumbo Adans. （Nelumbonaceae） is an important member of the early-diverging eudicots. It contains two extant species： N. nucifera Gaertn. （the Sacred lotus）, distributed in Asia and Australia and N. lutea Willd. （the American lotus）, occurring in North America. This paper reviews the taxonomic, evolutionary and phytogeographic studies of the genus Nelumbo, and also raises scientific questions about it in further paleobotanic research. There are about 30 fossil species of Nelumbo established since the Early Cretaceous. Based on fossil studies, the ancestors of the extant N. nucifera and N. lutea are respectively considered to be N. protospeciosa from the Eocene to Miocene of Eurasia, and N. protolutea from the Eocene of North American. However, molecular systematic studies indicate that N. nucifera and N. lutea are probably split from a common ancestor during the Late Miocene to Early Pliocene, or even the Pleistocene, rather than separate relicts from extinct species on different continents. The characters of lotus stomatal development, seedling morphology as well as its flowering, pollination and fertilization in air reveal that it evolves from the land plants. Fossil data of Nelumbo indicates that the genus first occurs in mid-latitude area of Laurasia in the Early Cretaceous, then becomes widespread in North America and Eurasia and expands into Africa and South America during the Late Cretaceous; the genus probably colonizes the Indian Subcontinent from Asia during the Early Eocene after the collision of India and the Asian plates; the genus becomes extinct in Europe, but survives in Asia and North America during the Quaternary Ice Age, and later forms the present East Asia and North Australia-North America disjunctive distribution.

关键词： taxonomy evolution phytogeography Nelumbo Nelumbonaceae

Histone acetylation and deacetylation in ischemic stroke

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Neural Regeneration Research 2021年第8期16卷 1529-1530页

作者： Anatoly B.Uzdensky svetlana Demyanenko Laboratory of Molecular Neurobiology Academy of Biology and BiotechnologySouthern Federal UniversityRostov-on-DonRussia

Stroke is the second leading cause of death in the world. A significant part of survived people become invalids, dependent on others and in need of outside care. This is a heavy burden for their families and society. The life of patients surviving ischemic stroke(~80% of all strokes) may be subdivided by three main phases:(a) The acute phase that lasts about first 24 hours, when the neurons may be saved and the neuroprotective therapy may be efficient;(b) The early recovery phase that lasts for several days and weeks, when the repair and regeneration processes develop, and partial recovery of brain functions occurs;and (c) The chronic phase(weeks, months and years)。

关键词： protective acute death

Detection of CO2 and O2 by iron loaded LTL zeolite films

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Frontiers of Chemical Science and Engineering 2018年第1期12卷 94-102页

作者： Veselina Georgieva Richard Retoux Valerie Ruaux Valentin Valtchev svetlana Mintova Laboratoire Catalyse et Spectrochimie (LCS) ENSICAEN CNRS Normandy University 14000 Caen France Laboratoire de Cristallographie et Sciences des Matériaux (CRISMAT) ENSICAEN CNRS Normandy University 14000 Caen France

Detection of oxygen and carbon dioxide is important in the field of chemical and biosensors for atmosphere and biosystem monitoring and fermentation processes. The present study reports on the preparation of zeolite films doped with iron nanoparticles for detection of CO2 and O2 in gas phase. Pure nanosized LTL type zeolite with monomodal particle size distribution loaded with iron （Fe-LTL） was prepared under hydrothermal condition from colloidal precursor suspensions. The zeolite was loaded with iron to different levels by ion exchange. The Fe-LTL suspensions were used for preparation of thin films on silicon wafers via spin coating method. The reduction of the iron in the zeolite films was carried out under H2 flow （50% H2 in Ar） at 300 ℃. The presence of iron nanoparticles is proved by in situ ultra-violet-visible spectroscopy. The properties of the films including surface roughness, thickness, porosity, and mechanical stability were studied. In addition, the loading and distribution of iron in the zeolite films were investigated. The Fe-LTL zeolite films were used to detect O2 and CO2 in a concentration dependent mode, followed by IR spectroscopy. The changes in the IR bands at 855 and 642 cm^-1 （Fe O-H and Fe-O bending vibrations） and at 2363 and 2333 cm^-1 （CO2 asymmetric stretching） corresponding to the presence of O2 and CO2, respectively, were evaluated. The response to O2 and CO2 was instant, which was attributed to great accessibility of the iron in the nanosized zeolite crystals. The saturation of the Fe-LTL films with CO2 and O2 at each concentration was reached within less than a minute. The Fe-LTL films detected both oxygen and carbon dioxide in contrast, to the pure LTL zeolite film.

关键词： zeolite films detection of CO2 and O2 adsorption

捕捉属于真实的美好 svetlana Kuzmina的生活方式摄影

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人像摄影 2024年第1期 18-31页

作者： Demi 斯维特拉娜·库兹米娜(摄影) 不详

像孩子用网捕捉蝴蝶一样斯维特拉娜·库兹米娜(svetlana Kuzmina),是一名杰出的生活方式摄影师,目前居住在挪威首都奥斯陆。她的照片真实而美好,那些平凡又闪着光的瞬间,总是能带给人无尽的感动与力量。几年来她获得了家庭、儿童、婚礼... 详细信息

像孩子用网捕捉蝴蝶一样斯维特拉娜·库兹米娜(svetlana Kuzmina),是一名杰出的生活方式摄影师,目前居住在挪威首都奥斯陆。她的照片真实而美好,那些平凡又闪着光的瞬间,总是能带给人无尽的感动与力量。几年来她获得了家庭、儿童、婚礼以及纪实类的众多摄影奖项。

关键词：纪实类斯维特摄影捕捉生活奥斯陆真实

Pathological changes in the cellular structures of retina and choroidea in the early stages of alloxan-induced diabetes

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World Journal of Diabetes 2018年第12期9卷 239-251页

作者： Irina Danilova svetlana Medvedeva svetlana Shmakova Margarita Chereshneva Alexey Sarapultsev Petr Sarapultsev Department of Biology and Fundamental Medicine Institute of Natural Sciences and Mathematics Ural Federal University Named After the First Pres.of Russia B.N.Yeltsin Laboratory of Morphology and Biochemistry Institute of Immunology and Physiology Ural Division of Russian Academy of Sciences Laboratory of Immunophysiology and Immunopharmacology Institute of Immunology and Physiology Ural Division of Russian Academy of Sciences Institute of Chemical Engineering Ural Federal University Named After the First Pres. of Russia B.N. Yeltsin Laboratory of Immu-nophatophysiology Institute of Immunology and Physiology Ural Division of Russian Academy of Sciences

AIM To investigate the temporal sequence of pathological changes in the cellular structures of retina and choroidea in the early stages of diabetes in laboratory *** Experimental type 1 diabetes was modeled by three intraperitoneal injections of an alloxan solution into 30 male nonlinear rats at 16 wk of age. The 30 th and 60 th days from the final alloxan injection were chosen as the endpoints. Light and electron microscopy and morphometric and immunohistochemical studies were performed on histological slices of eyeballs from experimental *** Diabetic disturbances progressed to 60 d of the experiment. Thus, in the retina, a partial destruction of photoreceptors accompanied by interstitial edema was observed. The morphometric analysis revealed a reduction in the thickness of the retina. A reduction in the number of blood vessels of the choroid with disturbances of the endothelial cells and the vascular walls and a persistent reduction in the number of melanocytes were observed. The number of proliferating Ki-67 positive cells decreased, and the number of macrophages increased with diabetes *** The starting point in the development of destructive changes involves early reduction in the number of melanocytes of the choroidea and alterations in the retinal pigment epithelium.

关键词： Alloxan Diabetes Diabetic retinopathy Early stage Morphology Histological changes

Lanthanide NIR luminescence for telecommunications, bioanalyses and solar energy conversion

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Journal of Rare Earths 2010年第6期28卷 824-842页

作者： Jean-Claude G. Bünzli svetlana V. Eliseeva cole Polytechnique Fédérale de Lausanne Institute of Chemical Sciences and Engineering WCU Professor Korea University Center for Next Generation Photovoltaic Systems Katholieke Universiteit Leuven Department of Chemistry Laboratory of Coordination Chemistry

Present-day advanced technologies heavily rely on the exciting magnetic and spectroscopic properties of lanthanide ions. In particular, their ability to generate well-characterized and intense near-infrared (NIR) luminescence is exploited in any modern fiber-optic telecommunication network. In this feature article, we first summarize the whereabouts underlying the design of highly luminescent NIR molecular edifices and materials. We then focus on describing the main trends in three applications related to this spectral range: telecommunications, biosciences, and solar energy conversion. In telecommunications, efforts concentrate presently on getting easily processable polymer-based waveguide amplifiers. Upconversion nanophosphors emitting in the visible after NIR excitation are now ubiquitous in many bioanalyses while their application to bio-imaging is still in its early stages; however, highly sensitive NIR-NIR systems start to be at hand for both in vitro and in vivo imaging, as well as dual probes combining magnetic resonance and optical imaging. Finally, both silicon-based and dye-sensitized solar cells benefit from the downconversion and upconversion capabilities of lanthanide ions to harvest UV and NIR solar light and to boost the overall quantum efficiency of these next-generation devices.

关键词： lanthanide luminescence near-infrared luminescence telecommunications bioanalysis solar energy conversion solar cell upconversion downconversion

Potential triggers for large earthquakes in open-pit mines:A case study from Kuzbass,Siberia

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Deep Underground Science and Engineering 2022年第2期1卷 101-115页

作者： Gevorg Kocharyan Chengzhi Qi svetlana Kishkina Vladimir Kulikov Sadovsky Institute for Dynamics of Geospheres of Russian Academy of Sciences MoscowRussia Civil and Transportation School Beijing University of Civil Engineering and ArchitectureBeijingChina

The extraction and movement of rock during mining operations is considered a possible trigger for slip along the *** this study,possible anthropogenic causes were analyzed for triggering the earthquake with the local magnitude ofML=6.1(at a depth of 4km just beneath the quarry),in the vicinity of the large coal open-pit mine in *** event was the largest earthquake associated with a quarry(an open pit).A sufficiently deep occurrence of the source testified that seismic vibrations were produced in a dynamic slip along a preexisting and prestressed tectonic *** calculations were conducted of increments of normal and shear stresses at fault planes with several dip angles at depths corresponding to the probable location of the hypocenter of the Bachat *** the results show,long-term rock excavations bring a prestressed thrust fault closer to the ultimate Coulomb strength,and stress variations at those depths may suffice to initiate a movement along the *** measuring seismic vibrations at different quarries and mines in Russia,the dynamic effect at the supposed depth of the source occurrence could be reliably *** is shown,the ultimate anticipated dynamic deformations are noticeably lower than corresponding values produced by seismic waves of distant earthquakes in the case when the effects of dynamic triggering were ***,the seismic effect of explosions cannot trigger a large earthquake with deep source *** in open-pit mines can only bring forward the moment of an earthquake at a potentially seismogenic *** the same time,the numerical calculations reveal that a branching network of underground tunnels located at several horizons can noticeably reduce the effective shear modulus of the host *** effect can even provoke a dynamic movement at a previously aseismic fault.

关键词： anthropogenic impact Coulomb stress variations fault induced seismicity mine seismicity open pits

Genetic diversity and differentiation among populations of the pedunculate oak(Quercus robur)at the eastern margin of its range based on a new set of 95 SNP loci

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Journal of Forestry Research 2021年第5期32卷 2237-2243页

作者： Bernd Degen Yulai Yanbaev Ruslan Ianbaev svetlana Bakhtina Albina Tagirova Institute of Forest Genetics GrosshansdorfGermany Federal State Budgetary Educational Establishment of Higher Education“Bashkir State Agrarian University” UfaRussia Federal State Budgetary Educational Establishment of Higher Education“Bashkir State University” UfaRussia

The aim of this study is to determine the genetic variability and differentiation among populations of pedunculate oak(Quercus robur)at the eastern margin of the species distribution *** applied new set of 95 geographically informative nuclear SNP(single nucleotide polymorphism)loci developed using Double Digest Restriction Site Associated DNA(ddRAD),a new generation DNA sequencing *** study area is located in the basins of the Volga River and its two main tributaries,Kama and *** the strong reduction and fragmentation of pedunculate oak forests over the last several centuries and comparatively small sizes of present stands,a relatively similar genetic diversity of seven populations was observed(on average,allelic diversity v_(a)=1.472-1.603,observed heterozygosity H_(O)=0.305-0.358,expected heterozygosity H_(E)=0.272-0.343).The genetic distances between populations vary between 0.102 and 0.170(on average,d_(0)=0.128).We have identified the absence of a spatial genetic structure and the existence of genetically peculiar populations in the territory *** genetic distances of Gregorius between populations vary between 0.102 and 0.170(on average,d_(0)=0.128).Genetic differentiation among populations was statistically significant with a mean of the fixation index FST of *** from the Privolzhye Upplands and from northern parts of the study area make the most contribution to overall inter-population differentiation(d_(0)=0.137).No significant differences exist among the samples at lowlands along the Volga river(d_(0)=0.110).It was concluded that the multiplicity and different ages of local populations and the complexity of migration routes of the pedunculate oak from Pleistocene refugia and secondary Holocene shelters can cause this phenomenon.

关键词： Population Quercus robur Gene pool Single nucleotide polymorphism

Highly active Pd containing EMT zeolite catalyst for indirect oxidative carbonylation of methanol to dimethyl carbonate

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Journal of Energy Chemistry 2021年第1期30卷 191-201,I0007页

作者： Chunzheng Wang Weisong Xu Zhengxing Qin Hailing Guo Xinmei Liu svetlana Mintova State Key Laboratory of Heavy Oil Processing College of Chemical EngineeringChina University of Petroleum(East China)Qingdao 266580ShandongChina Laboratoire Catalyse et Spectrochimie(LCS) Normandie UniversiteENSICAENUN1CAENCNRS6 Boulevard Marechal JuinCaen 14050France

Palladium containing EMT zeolite catalyst(Pd/EMT) was prepared and used for the indirect oxidative carbonylation of methanol to dimethyl carbonate(DMC).The EMT zeolite was employed as a new catalyst support and compared with the conventional Pd containing FAU zeolite catalyst(Pd/FAU).The Pd/EMT in contrast to the Pd/FAU catalyst exhibited high intrinsic activity with the turnover frequency of 0.25 s^(-1) vs.0.11 s^(-1).The Pd/EMT catalyst showed high CO conversion of 82% and DMC selectivity of 79%,that maintained for at least 130 h,while the activity of the Pd/FAU catalyst rapidly deteriorated within 12 *** enhanced interactions between Pd and EMT zeolite inhibited the sintering of palladium clusters and maintained the Pd2+ active sites in the Pd/EMT *** stabilization of the mono-dispersed Pd clusters within the EMT zeolite is paramount to the excellent performance of the catalyst for the indirect oxidative carbonylation of methanol to DMC.

关键词： EMT Palladium Stability Carbonylation Dimethyl carbonate