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GeSnOI mid-infrared laser technology

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Light(Science & Applications) 2021年第12期10卷 2408-2420页

作者： Binbin Wang Emilie Sakat Etienne Herth Maksym Gromovyi Andjelika Bjelajac Julien Chaste Gilles Patriarche Philippe Boucaud Frédéric Boeuf Nicolas Pauc Vincent Calvo Jérémie Chrétien Marvin Frauenrath alexei Chelnokov Vincent Reboud Jean-Michel Hartmann Moustafa El Kurdi UniversitéParis-Saclay CNRSC2N10 boulevard Thomas Gobert91120 PalaiseauFrance UniversitéCôte d’Azur CNRSCRHEARue Bernard Grégory06905 Sophia-AntipolisFrance STMicroelectronics Rue Jean Monnet38054 CrollesFrance UniversitéGrenoble Alpes CEAIRIG-DePhy17 rue des Martyrs38000 GrenobleFrance UniversitéGrenoble Alpes CEALeti17 rue des Martyrs38000 GrenobleFrance

GeSn alloys are promising materials for CMOS-compatible mid-infrared lasers ***,Sn alloying and tensile strain can transform them into direct bandgap *** growing laser technology however suffers from a number of limitations,such as poor optical confinement,lack of strain,thermal,and defects management,all of which are poorly discussed in the ***,a specific GeSn-on-insulator(GeSnOI)stack using stressor layers as dielectric optical claddings is demonstrated to be suitable for a monolithically integration of planar Group-IV semiconductor lasers on a versatile photonic platform for the near-and mid-infrared spectral ***-shape resonators on mesa structures were fabricated from GeSnOI,after bonding a Ge_(0.9)Sn_(0.1) alloy layer grown on a Ge strain-relaxed-buffer,itself on a Si(001)*** GeSnOI microdisk mesas exhibited significantly improved optical gain as compared to that of conventional suspended microdisk resonators formed from the as-grown *** further show enhanced vertical out-coupling of the disk whispering gallery mode in-plane radiation,with up to 30%vertical out-coupling *** a result,the GeSnOI approach can be a valuable asset in the development of silicon-based mid-infrared photonics that combine integrated sources in a photonic platform with complex lightwave engineering.

关键词： GeSn OI coupling

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安氏白腹鼠的形态分化与分布范围修订

兽类学报 2020年第3期40卷 209-230页

作者：李飞虹杨奇森温知新夏霖张锋 Abramov alexei 葛德燕河北大学生命科学学院保定071000 中国科学院动物研究所动物进化与系统学院重点实验室北京100101 俄罗斯科学院动物研究所圣彼得堡199034 俄罗斯越南热带研究与技术中心越南河内

安氏白腹鼠(Niviventer andersoni)(Thomas, 1911)是中国特有种,也是白腹鼠属体型最大的种类。这一物种的基础研究较为薄弱,形态分化也缺乏系统分析。化石记录显示这一物种在第四纪晚期曾广泛分布于中国川黔地区中低海拔环境,然而国内... 详细信息

安氏白腹鼠(Niviventer andersoni)(Thomas, 1911)是中国特有种,也是白腹鼠属体型最大的种类。这一物种的基础研究较为薄弱,形态分化也缺乏系统分析。化石记录显示这一物种在第四纪晚期曾广泛分布于中国川黔地区中低海拔环境,然而国内外主要的数据库和专著均显示安氏白腹鼠现生种群分布区较为狭窄,主要在中国西南地区。本文通过检视国内外主要动物博物馆馆藏标本,结合课题组近十年来的野外采集,对安氏白腹鼠不同地理种群的形态分化进行研究,综合利用采集记录和博物馆馆藏数据对这一物种的分布范围进行修订。基于线粒体细胞色素b(Cyt b)的系统发育分析显示这一物种具有3个遗传支系。安氏白腹鼠指名亚种分布于四川盆地周边山脉与华中、华南地区,安氏白腹鼠哀牢山亚种分布于云南西南及藏东南地区。基于头骨测量数据的分析显示安氏白腹鼠不同地理种群已产生显著的分化。安氏白腹鼠现生种群从中国西藏东南地区到秦岭,甚至武陵山地区中高海拔森林环境均有分布,但与第四纪晚期这一物种的化石分布记录相比,现生种群分布海拔已明显上升。

关键词：安氏白腹鼠武陵山形态分化系统发育分布范围

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中国经济过热的危机将会摧毁美国

海外经济评论 2006年第51期 10-11页

作者： alexei Bayer

【俄罗斯《莫斯科时报》12月11日】中国快速的经济发展是过去10年最惊人的故事。上世纪7、80年代以前，中国和俄罗斯竞逐各自品牌的共产主义霸权。在90年代初，对敌对状态的关注点转向自由市场的转变。在1998年，俄罗斯默认接受一种智... 详细信息

【俄罗斯《莫斯科时报》12月11日】中国快速的经济发展是过去10年最惊人的故事。上世纪7、80年代以前，中国和俄罗斯竞逐各自品牌的共产主义霸权。在90年代初，对敌对状态的关注点转向自由市场的转变。在1998年，俄罗斯默认接受一种智慧：苏联本应该延迟民主化，先沿着中国的路线改革经济。

关键词：经济过热中国美国危机俄罗斯经济发展 80年代共产主义

超轻元素的光谱学验证多通道光谱仪用于检测轻量级元素

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实验与分析 2015年第6期 38-39页

作者： alexei Erko

最新研发的离散光谱仪能够在50～1120eV的能量区内进行快速连续的光谱检测。在这样的能量区内，高分辨率是检测元素周期表中轻量级元素的必要条件．这对太阳能电池、蓄电池等能源材料的研究具有重要意义。

关键词：超轻元素光谱检测轻量级光谱学多通道验证仪用太阳能电池

PRECURSOR DYNAMICS OF Pb(B_(1/2)B0_(1/2))O_(3)-TYPE RELAXOR FERROELECTRICS STUDIED BY BROADBAND MICRO-BRILLOUIN SCATTERING

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Journal of Advanced Dielectrics 2012年第2期2卷 74-84页

作者： SEIJI KOJIMA MUHTAR AHART VENKATASUBRAMANIAN SIVASUBRAMANIAN alexei.A.BOKOV ZUO-GUANG.YE PAS University of Tsukuba TsukubaIbaraki 305-8573Japan Geophysical Laboratory Carnegie Institution of Washington Washington DC 20015 USA Indira Gandhi Centre for Atomic Research Kalpakkam-603102 India Department of Chemistry and 4D LABS Simon Fraser University Burnaby BCCanada V5A 1S6

This paper reviews the recent progress in the understanding of the dynamics of Pb(B_(1/2)B0_(1/2))O_(3)-type relaxor ferroelectrics using of broadband micro-Brillouin scattering spectroscopy,which covers a large frequency range from 1 to 1000 GHz by a tandem multi-pass FabryPerot inter*** contrast to Pb(B_(1/3)B0_(2/3))O_(3)-type relaxors,there is no frustration on the B-site of perovskite structure and the degree of order of B-site cations depends on heat *** softening of sound velocity and an intense central peak are observed above the Curie temperature TC owing to the polarization°uctuations in polar nanoregions(PNRs).Unlike the Pb(B_(1/3)B0_(2/3))O_(3)relaxors,Pb(B_(1/2)B'_(1/2))O_(3)does not undergoes a typical diffuse phase transition without lead vacancies on A-site which enhances *** the(1-x)Pb(B_(1/2)B'_(1/2))O_(3-x)PbTiO_(3)solid solutions,the long range polar order increases as the PbTiO_(3)content ***,a central peak owing to dynamic PNRs still remains even for the composition near the MPB,and a critical slowing down is clearly observed in the vicinity of TC.

关键词： Ferroelectric relaxor elastic anomaly central peak Brillouin scattering

Machine learning for spatial environmental data :

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1000年

作者： Mikhail Kanevski alexei Pozdnoukhov and Vadim Timonin.

Includes bibliographical references (p. [347]-371) and index.

ISBN: (纸本)9780849382376;9782940222247

Includes bibliographical references (p. [347]-371) and index.

关键词： Environmental mapping Machine learning. Mappings (Mathematics) Cartography Geographic information systems.

来源：畅想之星图书光盘版（南... 评论

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数字视频(第一部分)——影坛明星

电子与电脑 1999年第9期 86-93+8页

作者： alexei Oreskovic ,李琳

现在你终于可以摆脱那些老式的模拟摄录机了,使用它们拍摄电影耗费了你大量的时间和精力。数字便携式摄录机使你每次都能轻松地摄取完美的视频图像。

关键词：摄录售价参考价美国美元美利坚合众国北美洲本位币数字视频模拟磁带

Contribution of functional KIR3DL1 to ankylosing spondylitis

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Cellular & Molecular Immunology 2010年第6期7卷 471-476页

作者： Ivan V Zvyagin Ilgar Z Mamedov Olga V Britanova Dmitriy B Staroverov Evgeni L Nasonov Anna G Bochkova Anna V Chkalina alexei A Kotlobay Dmitriy O Korostin Denis V Rebrikov Sergey Lukyanov Yuri B Lebedev Dmitriy M Chudakov Shemiakin-Ovchinnikov Institute of Bioorganic Chemistry RASMoscowRussia Institute of Rheumatology RAMSMoscowRussia DNA-Technology JSC MoscowRussia Vavilov Institute of General Genetics MoscowRussia

Increasing evidence points to a role for killer immunoglobulin-like receptors(KIRs)in the development of autoimmune *** particular,a positive association of KIR3DS1(activating receptor)and a negative association of KIR3DL1(inhibitory receptor)alleles with ankylosing spondylitis(AS)have been reported by several ***,none of the studies analyzed these associations in the context of functionality of polymorphic *** better understand how the KIR3DL1/3DS1 genes determine susceptibility to AS,we analyzed the frequencies of alleles and genotypes encoding functional(KIR3DL1*F)and non-functional(KIR3DL1*004)*** genotyped 83 AS patients and 107 human leukocyte antigen(HLA)-B27-positive healthy controls from the Russian Caucasian population using a two-stage sequence-specific primer PCR,which distinguishes KIR3DS1,KIR3DL1*F and KIR3DL1*004 *** the patients carrying two functional KIR3DL1 alleles,those alleles were additionally genotyped to identify KIR3DL1*005 and KIR3DL1*007 alleles,which are functional but are expressed at low ***3DL1 was negatively associated with AS at the expense of KIR3DL1*F but not of KIR3DL1**** finding indicates that the inhibitory KIR3DL1 receptor protects against the development of AS and is not simply a passive counterpart of the segregating KIR3DS1 allele encoding the activating ***,analysis of genotype frequencies indicates that the presence of KIR3DS1 is a more important factor for AS susceptibility than the absence of KIR3DL1**** activation of either natural killer(NK)or T cells via the KIR3DS1 receptor can be one of the critical events in AS development,while the presence of the functional KIR3DL1 receptor has a protective ***,even individuals with a genotype that carried two inhibitory KIR3DL1 alleles expressed at high levels could develop AS.

关键词： ankylosing spondylitis autoimmune disease HLA-B27 KIR KIR3DL1 KIR3DS1 KIR3DL1*004 NK cell T cell

Developmental regulation of neuronal gene expression by Elongator complex protein 1 dosage

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Journal of Genetics and Genomics 2022年第7期49卷 654-665页

作者： Elisabetta Morini Dadi Gao Emily M.Logan Monica Salani Aram J.Krauson Anil Chekuri Yei-Tsung Chen Ashok Ragavendran Probir Chakravarty Serkan Erdin alexei Stortchevoi Jesper Q.Svejstrup Michael E.Talkowski Susan A.Slaugenhaupt Center for Genomic Medicine Massachusetts General Hospital Research InstituteBostonMAUSA Department of Neurology Massachusetts General Hospital Research Institute and Harvard Medical SchoolBostonMAUSA Program in Medical and Population Genetics and Stanley Center for Psychiatric Research Broad Institute of Harvard and MITCambridgeMAUSA Department of Life Sciences and Institute of Genome Sciences National Yang Ming Chiao Tung UniversityTaiwanChina Bioinformatics and Biostatistics The Francis Crick InstituteLondonUK Mechanisms of Transcription Laboratory The Francis Crick InstituteLondonUK Department of Cellular and Molecular Medicine Panum InstituteUniversity of CopenhagenCopenhagenDenmark

Familial dysautonomia(FD), a hereditary sensory and autonomic neuropathy, is caused by a mutation in the Elongator complex protein 1(ELP1) gene that leads to a tissue-specific reduction of ELP1 protein. Our work to generate a phenotypic mouse model for FD headed to the discovery that homozygous deletion of the mouse Elp1 gene leads to embryonic lethality prior to mid-gestation. Given that FD is caused by a reduction, not loss, of ELP1, we generated two new mouse models by introducing different copy numbers of the human FD ELP1 transgene into the Elp1 knockout mouse(Elp1) and observed that human ELP1 expression rescues embryonic development in a dose-dependent manner. We then conducted a comprehensive transcriptome analysis in mouse embryos to identify genes and pathways whose expression correlates with the amount of ELP1. We found that ELP1 is essential for the expression of genes responsible for nervous system development. Further, gene length analysis of the differentially expressed genes showed that the loss of Elp1 mainly impacts the expression of long genes and that by gradually restoring Elongator, their expression is progressively rescued. Finally, through evaluation of co-expression modules, we identified gene sets with unique expression patterns that depended on ELP1 expression.

关键词： ELP1 Elongator Transcriptional elongation Familial dysautonomia Neurodevelopmental disease

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