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Early Jurassic Climate Warming in Eastern siberia: First Macrofloristic Evidence from Irkutsk Basin, Russia

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Acta Geologica sinica(English Edition) 2024年第4期98卷 1035-1050页

作者： andrey FROLOV Irina MAsHCHUK Institute of the Earth's Crust Siberian Branch of the Russian Academy of SciencesIrkutsk664033Russia

Numerous new records of Ferganiella, Podozamites, and schidolepium, including a new species, Ferganiella ivantsovii sp. nov., are described from the Early Jurassic(Toarcian) Middle subformation of the Prisayan Formation from the Euro-sinian paleofloristic region in the Irkutsk Basin, Eastern siberia, Russia. An analysis of the paleogeographic distribution of Ferganiella and Podozamites shows that both genera were the most diverse and numerous in the East Asian province of the Euro-sinian region and in the Northern Chinese province of the siberian region during the Early and Middle Jurassic. These phytochoria were located in the subtropical and temperate subtropical climate zones, which allows us to consider Ferganiella and Podozamites as thermophilic plants, which are important indicators of the Early Toarcian climatic optimum. Their abundance in the Irkutsk Basin thus may indicate Early Toarcian warming;further abundant schidolepium cones, which produced Araucariacites pollen, typical for Euro-sinian flora complement the scenario. Thus, the new finds are the first macrofloristic indicators of the Toarcian climatic optimum in the Irkutsk Basin.

关键词： paleobotany Ferganiella Podozamites schidolepium Toarcian climatic optimum paleobiogeography siberian paleofloristic region Irkutsk

Preface to the special Issue on Modeling and Data Analysis Methods for the sMILE mission

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Earth and Planetary Physics 2024年第1期8卷 1-4页

作者： TianRan sun Hyunju Connor andrey samsonov National space science Center Chinese Academy of SciencesBeijing 100190China NAsA Goddard space Flight Center US Mullard space science Laboratory University College LondonUK

The sMILE(solar wind Magnetosphere Ionosphere Link Explorer)project(http://***/smile/,https://***/web/smile/mission)is a joint spacecraft mission of the European space Agency(EsA)and the Chinese Academy of sciences(CAs)with an expected launch in *** aims to study the global interactions of solar wind–magnetosphere–ionosphere innovatively by imaging the Earth’s magnetosheath and cusps in soft X-rays and the northern auroral region in ultraviolet(UV)while simultaneously measuring plasma and magnetic field parameters in the solar wind and magnetosheath along a highly-elliptical and highly-inclined *** special issue is composed of 22 articles,presenting recent progress in modeling and data analysis techniques developed for the sMILE *** this preface,we categorize the articles into the following seven topics and provide brief summaries:(1)instrument descriptions of the soft X-ray Imager(sXI),(2)numerical modeling of the X-ray signals,(3)data processing of the X-ray images,(4)boundary tracing methods from the simulated images,(5)physical phenomena and a mission concept related to the scientific goals of sMILE-sXI,(6)studies of the aurora,and(7)ground-based support for sMILE.

关键词： sMILE X-ray imaging magnetosphere auroral ionosphere

A metabolic signalling role for arginine in liver cancer

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Life Metabolism 2024年第1期3卷 1-3页

作者： David sokolov Lucas B.sullivan Human Biology Division Fred Hutchinson Cancer CenterSeattleWA 98109United States

In addition to their canonical roles in biosynthetic pathways,metabolites can be active participants in oncogenic signal-ling,but our understanding of these signalling mechanisms is *** a recent article published in Cell,Mossmann et *** a novel signalling role for accumulated arginine in hepato-cellular carcinoma(HCC)mediated by the RNA splicing factor and transcriptional modifier RNA-binding protein 39(RBM39).

关键词： incomplete cancer

Irisin/BDNF signaling in the muscle-brain axis and circadian system: A review

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The Journal of Biomedical Research 2024年第1期38卷 1-16页

作者： Alexey N.Inyushkin Vitalii s.Poletaev Elena M.Inyushkina Igor s.Kalberdin andrey A.Inyushkin Department of Human&Animal Physiology Samara National Research UniversitySamara 443011Russia.

In mammals,the timing of physiological,biochemical and behavioral processes over a 24-h period is controlled by circadian *** entrain the master clock located in the suprachiasmatic nucleus of the hypothalamus to a precise 24-h rhythm,environmental zeitgebers are used by the circadian *** is done primarily by signals from the retina via the retinohypothalamic tract,but other cues like exercise,feeding,temperature,anxiety,and social events have also been shown to act as non-photic *** recently identified myokine irisin is proposed to serve as an entraining non-photic signal of *** is a product of cleavage and modification from its precursor membrane fibronectin typeⅢdomain-containing protein 5(FNDC5)in response to *** from well-known peripheral effects,such as inducing the"browning"of white adipocytes,irisin can penetrate the blood-brain barrier and display the effects on the *** data suggest that FNDC5/irisin mediates the positive effects of physical activity on brain *** several brain areas,irisin induces the production of brain-derived neurotrophic factor(BDNF).In the master clock,a significant role in gating photic stimuli in the retinohypothalamic synapse for BDNF is ***,the brain receptor for irisin remains *** the current review,the interactions of physical activity and the irisin/BDNF axis with the circadian system are reconceptualized.

关键词： irisin brain-derived neurotrophic factor peroxisome proliferator-activated receptorγcoactivator 1α circadian rhythm circadian system muscle-brain axis

simulation of the sMILE soft X-ray Imager response to a southward interplanetary magnetic field turning

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Earth and Planetary Physics 2024年第1期8卷 39-46页

作者： andrey samsonov Graziella Branduardi-Raymont steven sembay Andrew Read David sibeck Lutz Rastaetter Mullard space science Laboratory University College LondonDorking RH56NTUK Leicester University Leicester LE17RHUK Goddard space Flight Center National Aeronautics and Space AdministrationGreenbeltMD 20771USA

The solar wind Magnetosphere Ionosphere Link Explorer(sMILE)soft X-ray Imager(sXI)will shine a spotlight on magnetopause dynamics during magnetic *** simulate an event with a southward interplanetary magnetic field turning and produce sXI count maps with a 5-minute integration *** making assumptions about the magnetopause shape,we find the magnetopause standoff distance from the count maps and compare it with the one obtained directly from the magnetohydrodynamic(MHD)*** root mean square deviations between the reconstructed and MHD standoff distances do not exceed 0.2 RE(Earth radius)and the maximal difference equals 0.24 RE during the 25-minute interval around the southward turning.

关键词： magnetopause magnetic reconnection solar wind charge exchange southward interplanetary magnetic field numerical modeling solar wind Magnetosphere Ionosphere Link Explorer(sMILE) soft X-ray Imager

submonolayer Eu superstructures—A class of 2D magnets

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Nano Research 2023年第1期16卷 1500-1506页

作者： Dmitry V.Averyanov Ivan s.sokolov Alexander N.Taldenkov Oleg E.Parfenov andrey M.Tokmachev Vyacheslav G.storchak National Research Center“Kurchatov Institute” Kurchatov Sq.1Moscow 123182Russia

Two-dimensional(2D)magnetic materials promise unconventional properties and quantum phases as well as advances in ultracompact *** of 2D magnets often reaches a single monolayer but in general can go beyond this limit,as demonstrated by 2D magnetism of submonolayer Eu superstructures coupled with *** question is whether the submonolayer magnetism constitutes a general ***,we demonstrate that regular Eu lattices form a class of 2D magnets displaying various structures,stoichiometries,and chemical *** synthesized and studied a set of Eu superstructures on Ge(001).Their magnetic properties are consistent with the emergence of a magnetic order such as ferro-or *** particular,control over the magnetic transition temperature by weak magnetic fields indicates the 2D nature of the *** together,Eu/Ge and Eu/si superstructures seed a nucleus of the research area addressing the emergence of magnetism in submonolayer chemical species.

关键词： two-dimensional(2D)magnetism submonolayer superstructure surface reconstruction germanium

A class of high-mobility layered nanomaterials by design

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Journal of Materials science & Technology 2023年第33期164卷 179-187页

作者： Dmitry V.Averyanov Ivan s.sokolov Oleg E.Parfenov Alexander N.Taldenkov Oleg A.Kondratev andrey M.Tokmachev Vyacheslav G.storchak National Research Center “Kurchatov Institute” Kurchatov Sq.1Moscow 123182Russia

Design of materials with particular functional properties is indispensable albeit very *** and structural analogies can be helpful in this endeavor,especially when a particular combination of properties is sought *** aim is to bundle together 3 characteristics:high carrier mobility,magnetism,and scalability to nanomaterials in the form of a film–such a combination is particularly advantageous for ***,inspired by recent studies of MAl_(2)si_(2)and related compounds,we develop magnetic EuAl_(2)Ge_(2)and non-magnetic srAl_(2)Ge_(2)nanomaterials with high carrier *** syntheses employing sacrificial 2D templates result in epitaxial films of MAl_(2)Ge_(2)seamlessly integrated with *** syntheses are followed by a study of the atomic structure,magnetic and electron transport *** particular,the films demonstrate high carrier mobility,exceeding 10,000 cm^(2)V^(-1)s^(-1)in the case of EuAl_(2)Ge_(2),making the materials appealing for *** together,MAl_(2)Ge_(2)and MAl_(2)si_(2)form a class of high-mobility layered nanomaterials.

关键词： High carrier mobility Magnetism srAl_(2)Ge_(2) EuAl_(2)Ge_(2) Germanium

Enhancing crystal integrity and structural rigidity of CsPbBr_(3) nanoplatelets to achieve a narrow colorsaturated blue emission

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Light(science & Applications) 2024年第5期13卷 985-997页

作者： Qianqian Huang Wenxu Yin Bo Gao Qingsen Zeng Dong Yao Hao Zhang Yinghe Zhao Weijia Zheng Jiaqi Zhang Xuyong Yang Xiaoyu Zhang andrey L.Rogach Key Laboratory of Automobile Materials MOE School of Materials Science&Engineeringand Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy MaterialsJilin UniversityChangchunChina. state Key Laboratory of supramolecular structure and Materials College of ChemistryJilin UniversityChangchunChina. state Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhanHubeiChina. Department of Chemistry University of VictoriaVictoriaBCCanada. Key Laboratory of Advanced Display and system Applications of Ministry of Education Shanghai UniversityShanghaiChina. Department of Materials science and Engineering and Centre for Functional Photonics(CFP)City University of Hong KongHong Kong S.A.RChina

Quantum-confined CsPbBr_(3) perovskites are promising blue emitters for ultra-high-definition displays,but their soft lattice caused by highly ionic nature has a limited ***,we endow CsPbBr_(3) nanoplatelets(NPLs)with atomic crystal-like structural rigidity through proper surface engineering,by using strongly bound N-dodecylbenzene sulfonic acid(DBsA).A stable,rigid crystal structure,as well as uniform,orderly-arranged surface of these NPLs is achieved by optimizing intermediate reaction stage,by switching from molecular clusters to mono-octahedra,while interaction with DBsA resulted in formation of a Cs_(x)O monolayer shell capping the NPL *** a result,both structural and optical stability of the CsPbBr3 NPLs is enhanced by strong covalent bonding of DBsA,which inhibits undesired phase transitions and decomposition of the perovskite phase potentially caused by ligand ***,rather small amount of DBsA ligands at the NPL surface results in a short inter-NPL spacing in their closely-packed films,which facilitates efficient charge injection and *** photoluminescence of the produced CsPbBr_(3) NPLs is bright(nearly unity emission quantum yield)and peaks at 457 nm with an extremely narrow bandwidth of 3.7 nm at 80 K,while the bandwidth of the electroluminescence(peaked at 460 nm)also reaches a record-narrow value of 15 nm at room *** value corresponds to the CIE coordinates of(0.141,0.062),which meets Rec.2020 standards for ultra-high-definition displays.

关键词： temperature stability narrow

A new aberrant species of the genus sphaerostoma(Trematoda: Opecoelidae) from the Amur River basin

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Zoological systematics 2024年第4期 352-360页

作者： sergey G.sokolov sergei V.shchenkov Evgeniy V.Frolov sergei A.Vlasenkov A.N.severtsov Institute of Ecology and Evolution RAs Department of Invertebrate Zoology St.Petersburg State University sakhalin Branch of Russian Federal Research Institute of Fisheries and Oceanography

A new freshwater opecoelid species, sphaerostoma tamarae sp. nov., is described from Rhynchocypris percnura mantschurica caught in the syumnyur River(Amur River basin,Russia). This parasite species differs from all other congeners in the distribution of the vitelline follicles(restricted to the hindbody) and the morphology of the ventral sucker(strongly protuberant). Molecular phylogenetic analysis based on 28s rRNA gene sequences and the morphological analysis allow to tentatively assign the new species to the genus sphaerostoma,without closing the question regarding the true genus affiliation of this species. In addition, the authors provide an argument for renaming the Plagioporinae to the sphaerostomatinae.

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