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考虑AA-CAES季节效率优化的建筑微网群多能协同优化策略

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电力建设 2023年第9期44卷 94-107页

作者：韩雪茹杨德昌 Payman Dehghanian nikita Tomin 中国农业大学信息与电气工程学院北京市100083 乔治华盛顿大学电气与计算机工程系华盛顿20052 俄罗斯科学院西伯利亚分院能源研究所新西伯利亚630090

先进绝热压缩空气储能(advanced adiabatic compressed air energy storage,AA-CAES)装置因具有大容量、寿命长、污染少、成本低等优点而日渐受到关注,其大容量多能联供联储特点与建筑能耗特征相匹配,接入由多建筑微网构成的区域综合能... 详细信息

先进绝热压缩空气储能(advanced adiabatic compressed air energy storage,AA-CAES)装置因具有大容量、寿命长、污染少、成本低等优点而日渐受到关注,其大容量多能联供联储特点与建筑能耗特征相匹配,接入由多建筑微网构成的区域综合能源系统(regional integrated energy system,RIES),两者相得益彰。文章建立了一种含AA-CAES的由多个建筑微网组成的区域综合能源系统模型,考虑压缩空气储能设备储气、储热双荷能状态以建立季节性效率优化模型,对AA-CAES的运行模式进行季节性优化,在区域内多能流平衡约束分析的基础上构建关于系统综合效益最优的二次约束问题,利用Gurobi求解器求解。仿真表明,改进的AA-CAES可协调区域内多个建筑微网的多能优化,提高系统经济性、节能性、环保性,促进可再生能源就地消纳与能源梯级利用。

关键词：先进绝热压缩空气储能(AA-CAES) 建筑微网群双荷能状态冷热电联供(CCHP)

俄罗斯医疗器械市场的进入策略 ——以中国公司为例

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俄罗斯医疗器械市场的进入策略 ——以中国公司为例

作者： nikita Martov 北京外国语大学

学位级别：硕士

目前,俄罗斯的经济正处于下降的状态,被西方制裁和限制,然而市场仍然是最有利可图的,国际企业有新的机会。俄罗斯是不同组织的成员,比如金砖国家(BRICS),这意味着该国的稳定和它的潜力是巨大的,俄国也成为了一种政治力量,并开始影响其... 详细信息

目前,俄罗斯的经济正处于下降的状态,被西方制裁和限制,然而市场仍然是最有利可图的,国际企业有新的机会。俄罗斯是不同组织的成员,比如金砖国家(BRICS),这意味着该国的稳定和它的潜力是巨大的,俄国也成为了一种政治力量,并开始影响其他国家。这些行为导致与欧盟和美国的敌对关系。因此,西方公司可能会面临许多挑战和法规,政府已出台政策支持当地的产品,并邀请东方公司。所以,中国企业在俄罗斯市场潜力巨大,并且仍然可以受到官僚机构和立法的影响。本篇论文有几个目标。本篇论文有几个论点。首先,要了解俄罗斯市场是一个整体,这就是问题所在,什么进入策略可以在局势被应用。其次,要找到并讨论相应的退出策略,在俄罗斯市场的具体中国公司,找出存在的主要问题,以及如何避免它们。该市场被定义为医疗设备市场,这在医学上最大领域之一使用——"泌尿外科"使用。该项目还考察了医疗设备,定制,网络关系,官僚机构认证的重要性,并拒绝腐败。该方法是基于螺旋式中国公司的实际案例来研究的,该公司于20]6年底进入市场,主要经验来自数据收集和与中国方面的代表面谈。此外,为了了解医疗器械企业在俄罗斯的经营情况,还与这个领域最大的参与者进行了面谈。这些巨头在加入战略提出,将与境外企业建立与俄罗斯的合作伙伴关系。本文的考察对象主要是那些参与到卫生保健系统的中国医疗公司或相关企业,并期望为其进入俄罗斯市场带来帮助。这项研究需要了解、分析中俄两国的基本国情、医疗市场、企业运营等,并尝试分析俄罗斯医疗器械市场的介入、退出策略,和当下俄罗斯卫生部门的优势与竞争何在。特别是中国公司在全球视野下不断发展,其又将如何面对俄罗斯的医疗器械市场(特别是在泌尿外科领域),以及会有哪些发展趋势,本文都将给予解答。

关键词：进入策略市场分析俄罗斯的市场卫生保健医疗器械泌尿科

利用引力模型分析非洲国家参与“一带一路”倡议的效果

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利用引力模型分析非洲国家参与“一带一路”倡议的效果

作者： Glaznev nikita 华东师范大学

学位级别：硕士

“一带一路”倡议已成为中国外交政策的重要组成部分,旨在加强全球互联互通和促进贸易。非洲国家已经成为“一带一路”的重要参与者,从中国获得了大量投资用于各种基础设施项目。本论文使用国际贸易引力模型和差分法(DID)框架分析了中... 详细信息

“一带一路”倡议已成为中国外交政策的重要组成部分,旨在加强全球互联互通和促进贸易。非洲国家已经成为“一带一路”的重要参与者,从中国获得了大量投资用于各种基础设施项目。本论文使用国际贸易引力模型和差分法(DID)框架分析了中国和非洲国家之间的贸易模式。引力模型被用来分析中国和非洲国家之间双边贸易的决定因素,包括影响贸易流动的经济、地理和制度因素。DID框架被用来考察BRI参与对中国和非洲国家之间双边贸易流动的影响。研究发现,BRI的参与积极影响了中国和非洲国家之间的贸易流动,DID结果显示,BRI参与国与未参与国相比,贸易增长超过13%。本文探讨了中国和非洲大陆多个国家之间的贸易和经济关系,将“一带一路”倡议下的项目作为过去十年中非关系的前沿,并分析了这种合作的效果和潜力。本文选择了中国及其贸易伙伴的GDP、地理距离、双边贸易额和人口作为解释变量,在国际贸易引力模型中对中国和非洲国家之间的进出口额做了多重测算,并采用DID框架观察它们加入BRI后与选择不加入的国家相比的积极效果。对这两个地区之间的经济关系和倡议本身进行了多项研究,然而本研究的重点是将这两个主题联系起来,以便更清楚地了解目前的状况以及未来的多种可能性,包括中国、其政府和私人投资者的商业机会。本研究使用了从联合国统计司、国际货币基金组织和世贸组织等公开渠道收集的二手面板数据,所有的描述性统计、回归和检查都是使用STATA 14软件完成的。

关键词：一带一路倡议非中贸易引力模型进口出口差分框架

Comparison of CoMoS4/CoMoO4,CoMoS4/CoWO4 and CoMoS4/Co3v2O8 as A New Type of Electrode Materials for Supercapacitors

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Comparison of CoMoS4/CoMoO4,CoMoS4/CoWO4 and CoMoS4/Co3V2O8 ...

作者： SAZONOv nikita 兰州理工大学

学位级别：硕士

由于对环境污染的担心和化石能源的消耗,发展可替代的、并且具备高能量密度和功率密度的能量存储/转换装置具有特殊的意义。在众多电源设备中,超级电容器,也称为电化学电容器(ECs),因为其许多可取的属性,吸引了研究者极大的兴趣。即便如... 详细信息

由于对环境污染的担心和化石能源的消耗,发展可替代的、并且具备高能量密度和功率密度的能量存储/转换装置具有特殊的意义。在众多电源设备中,超级电容器,也称为电化学电容器(ECs),因为其许多可取的属性,吸引了研究者极大的兴趣。即便如此,超级电容器想要作为实际应用的能源装置,仍然需要具备高的能量密度和功率密度.就超级电容器的发展现状及动态而言,金属氧化物电极材料具有较大的发展前景和潜力。但在目前的报道中,对CoMoO,CoWO,CovO及CoMoS/材料的超级电容性能的研究仍然很少,而且制备方法比较复杂。其次单一的双金属氧化物性能比较单一,各有优缺点。据此,本文设计了以CoMoS为基体,构筑了CoMoS/CoMoO,CoMoS4/CoWO4 and CoMoS/CovO的复合材料.一、设计制备CoMoS/CoMoO复合材料。采用一步化学法,调控MoO/MoS材料中CoMoS与CoMoO的相对含量,制备出一系列不同形貌的CoMoS/CoMoO电极材料。采用XRD、SEM、TEM-Mapping等测试手段探究MoO/MoS材料的结构形貌特征,分析探CoMoS4/CoMoO4复合电极与纯CoMoS和CoMoO三种电极材料的电化学性能差异.制备的CoMoS/CoMoO纳米复合材料的比电容约为399 F g其倍率性能为80.5%,拥有较好的循环稳定性。二、在研究CoMoS/CoMoO电极材料的基础上,进一步制备并探究CoMoS/CoWO电极材料。采用XRD、SEM、TEM等手段对CoMoS/CoWO进行结构和形貌的表征,同时测试其电化学性能,从电负性发面探讨研究CoMoS/CoWO,CoMoS及CoWO的电化学性能及规律。制备的CoMoS/CoWO纳米复合材料的比电容约为528 F g其倍率性能为78.8%,拥有较好的循环稳定性。三、在研究CoMoS/CoMoO及CoMoS/CoWO等钴钼基电极材料的基础上,进一步探究CoMoS/CovO电极材料的电化学性能,制备了CoMoS/CovO,CovO及CoMoS电极材料,采用XRD、SEM、TEM等手段对三种材料进行结构和形貌的表征,同时测试对比这三种材料的其电化学性能,探讨研复合前后CoMoS/CovO,CovO及CoMoS的的电化学性能及规律。制备的CoMoS/CovO纳米复合材料的比电容约为584 F g其倍率性能为84.1%,拥有较好的循环稳定性。

关键词：超级电容器纳米复合材料 CoMoS4/Co3v2O8 CoMoS4/CoMoO4 CoMoS4/CoWO4

Recent advances in laser self-injection locking to high-Q microresonators

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Frontiers of physics 2023年第2期18卷 89-130页

作者： nikita M.Kondratiev valery E.Lobanov Artem E.Shitikov Ramzil R.Galiev Dmitry A.Chermoshentsev nikita Yu.Dmitriev Andrey N.Danilin Evgeny A.Lonshakov Kirill N.Min’kov Daria M.Sokol Steevy J.Cordette Yi-Han Luo Wei Liang Junqiu Liu Igor A.Bilenko Directed Energy Research Centre Technology Innovation InstituteAbu DhabiUnited Arab Emirates Russian Quantum Center MoscowRussia Skolkovo Institute of Science and Technology SkolkovoRussia Moscow Institute of Physics and Technology DolgoprudnyMoscow RegionRussia Faculty of Physics Lomonosov Moscow State UniversityMoscowRussia Shenzhen Institute for Quantum Science and Engineering Southern University of Science and TechnologyShenzhen 518055China International Quantum Academy Shenzhen 518048China Key Laboratory of Nanodevices and Applications Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China Hefei National Laboratory University of Science and Technology of ChinaHefei 230026China

The stabilization and manipulation of laser frequency by means of an external cavity are nearly ubiquitously used in fundamental research and laser applications. While most of the laser light transmits through the cavity, in the presence of some back-scattered light from the cavity to the laser, the self-injection locking effect can take place, which locks the laser emission frequency to the cavity mode of similar frequency. The self-injection locking leads to dramatic reduction of laser linewidth and noise. Using this approach, a common semiconductor laser locked to an ultrahigh-Q microresonator can obtain sub-Hertz linewidth, on par with state-of-the-art fiber lasers. Therefore it paves the way to manufacture high-performance semiconductor lasers with reduced footprint and cost. Moreover, with high laser power, the optical nonlinearity of the microresonator drastically changes the laser dynamics, offering routes for simultaneous pulse and frequency comb generation in the same microresonator. Particularly, integrated photonics technology, enabling components fabricated via semiconductor CMOS process, has brought increasing and extending interest to laser manufacturing using this method. In this article, we present a comprehensive tutorial on analytical and numerical methods of laser self-injection locking, as well a review of most recent theoretical and experimental achievements.

关键词： self-injection locking laser stabilization microresonator nonlinearity single-frequency lasing multi-frequency lasing

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电流互感器饱和及其对差动保护的音响的研究

电流互感器饱和及其对差动保护的音响的研究

作者： Ivanov nikita 华北电力大学(北京)

学位级别：硕士

电流互感器饱和会导致二次电流失真。电流互感器的误差随着饱和而急剧增加,因为磁化电流不成比例地增加到初级电流。本文研究了直流电流分量和剩余磁化强度对CT饱和度的影响。当外部磁场的方向与残余感应的符号一致时,残余感应的影响更... 详细信息

电流互感器饱和会导致二次电流失真。电流互感器的误差随着饱和而急剧增加,因为磁化电流不成比例地增加到初级电流。本文研究了直流电流分量和剩余磁化强度对CT饱和度的影响。当外部磁场的方向与残余感应的符号一致时,残余感应的影响更大。Jiles-Atherton铁磁滞后方法是广泛用于电磁暂态仿真的方法。论文在MATLAB和Simulink中总结了Jiles-Atherton模型的不同模型和实现。饱和电流互感器对差动继电保护的运行有影响,可导致其非选择性运行,特别是在外部短路模式下。因此,为了正确操作差动继电保护,必须正确检测饱和过程并采取适当的措施。在论文中关于电力系统部分的例子,在Simulink中对各种短路模式进行了仿真和分析。获得的研究结果可能是进一步发展检测电流互感器饱和度的全新方法的有力背景。

关键词：电流互感器饱和 Jiles-Atherton的模型直流电流分量残余磁感应差动保护 MATLAB Simulink

The Trend of Homicides in South Kerala from 2002-2016:A Retrospective Forensic Autopsy-Based Study

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Journal of Forensic Science and Medicine 2021年第4期7卷 111-116页

作者： Nikhil Dileeph S.Sharija Antony Stanley K.valsala S.S.Sujisha nikita Prabhakaran Department of Forensic Medicine De SMCSI Medical CollegeThiruvananthapuramKeralaIndia Department of Forensic Medicine Government Medical CollegeThiruvananthapuramKeralaIndia Achutha Menon Centre for Health Science Studies Sree Chitra Tirunal Institute for Medical Sciences and TechnologyThiruvananthapuramKeralaIndia

Aims:The aim was to analyze the homicide pattern in South Kerala from autopsies conducted between 2002 and ***:Exploring the age and gender distribution of death due to homicide,the type and distribution of injuries according to the region of the body,and trends of *** also tried to study the pattern of defense wounds in homicidal cases and characteristics in dyadic deaths(homicide-suicide).Materials and Methods:It was a retrospective descriptive *** setting was the Department of Forensic Medicine,State Medico-Legal Institute,Government Medical College(GMC),*** cases of autopsies with an alleged history of homicide,between 2002 and 2016,done at Mortuary of GMC,Thiruvananthapuram,were included in the *** of all cases of an alleged history of homicide from January 1,2002 to December 31,2016 were ***:957 cases were *** annual incidence of homicide is declining after *** adult males(31T0 years)are the most common group involved(24.97%).Head injury was the most common cause of death(43.68%).The head was the most common area to be affected in fatal blunt force injuries(49%)while the chest was involved commonly in fatal sharp force injuries(36%).Females were more often the homicide victims in ***-wife and fatherchild combination was the most common pairs in dyadic ***:The characteristics which were associated with the homicides were generally in agreement with the existing forensic *** findings encourage examining the motives of homicide and potential sociocultural factors affecting the victims and possibly the *** also found that the murder-suicide cases differed from the homicides requiring a separate domain of understanding and subsequent investigations.

关键词： Death homicide homicide-suicide Kerala murder Thiruvananthapuram

Lipolysis supports bone formation by providing osteoblasts with endogenous fatty acid substrates to maintain bioenergetic status

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Bone Research 2023年第4期11卷 876-894页

作者： Ananya Nandy Ron C.M.Helderman Santosh Thapa Shobana Jayapalan Alison Richards nikita Narayani Michael P.Czech Clifford J.Rosen Elizabeth Rendina-Ruedy Department of Medicine Division of Clinical PharmacologyVanderbilt University Medical CenterNashvilleTN 37232USA Program in Molecular Medicine University of Massachusetts Chan Medical SchoolWorcesterMA 01605USA Maine Medical Center Research Institute ScarboroughMEUSA Molecular Physiology and Biophysics Vanderbilt UniversityNashvilleTN 37232USA

Bone formation is a highly energy-demanding process that can be impacted by metabolic *** has been considered the principal substrate for osteoblasts,although fatty acids are also important for osteoblast ***,we report that osteoblasts can derive energy from endogenous fatty acids stored in lipid droplets via lipolysis and that this process is critical for bone *** such,we demonstrate that osteoblasts accumulate lipid droplets that are highly dynamic and provide the molecular mechanism by which they serve as a fuel source for energy generation during osteoblast *** cytoplasmic lipolysis leads to both an increase in lipid droplet size in osteoblasts and an impairment in osteoblast *** fatty acids released by lipolysis from these lipid droplets become critical for cellular energy production as cellular energetics shifts towards oxidative phosphorylation during nutrient-depleted *** vivo,conditional deletion of the ATGL-encoding gene Pnpla2 in osteoblast progenitor cells reduces cortical and trabecular bone parameters and alters skeletal lipid ***,our data demonstrate that osteoblasts store fatty acids in the form of lipid droplets,which are released via lipolysis to support cellular bioenergetic status when nutrients are *** in this process result in impairment of bone formation,specifically reducing ATP production and overall osteoblast function.

关键词： endogenous maintain osteoblast

Terahertz technology in intraoperative neurodiagnostics:A review

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Opto-Electronic Advances 2023年第5期6卷 41-67页

作者： nikita v.Chernomyrdin Guzel R.Musina Pavel v.Nikitin Irina N.Dolganova Anna S.Kucheryavenko Anna I.Alekseeva Yuye Wang Degang Xu Qiwu Shi valery v.Tuchin Kirill I.Zaytsev Prokhorov General Physics Institute of the Russian Academy of Sciences Moscow 119991Russia Bauman Moscow State Technical University Moscow 105005Russia Institute for Regenerative Medicine Sechenov UniversityMoscow 119991Russia Institute of Solid State Physics of the Russian Academy of Sciences Chernogolovka 142432Russia Research Institute of Human Morphology Moscow 117418Russia School of Precision Instrument and Optoelectronic Engineering Tianjin UniversityTianjin 300000China College of Materials Science and Engineering Sichuan UniversityChengdu 610000China Science Medical Center Saratov State UniversitySaratov 410012Russia Institute of Precision Mechanics and Control FRC"Saratov Scientific Centre of the Russian Academy of Sciences"Saratov 410028Russia

Terahertz(THz)technology offers novel opportunities in biology and medicine,thanks to the unique features of THzwave interactions with tissues and *** them,we particularly notice strong sensitivity of THz waves to the tissue water,as a medium for biochemical reactions and a main endogenous marker for THz spectroscopy and *** of the brain have an exceptionally high content of *** factor,along with the features of the structural organization and biochemistry of neuronal and glial tissues,makes the brain an exciting subject to study in the THz *** this paper,progress and prospects of THz technology in neurodiagnostics are overviewed,including diagnosis of neurodegenerative disease,myelin deficit,tumors of the central nervous system(with an emphasis on brain gliomas),and traumatic brain *** and applied challenges in study of the THz-wave–brain tissue interactions and development of the THz biomedical tools and systems for neurodiagnostics are discussed.

关键词： THz technology THz spectroscopy and imaging superresolution imaging biophotonics brain neurodiagnosis tumor glioma neurodegenerative diseases brain injury light scattering