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Migratory mode transition of astrocyte progenitors in the cerebral cortex: an intrinsic or extrinsic cell process?

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Neural Regeneration Research 2024年第3期19卷 471-472页

作者： Michio Miyajima Hidenori Tabata Kazunori nakajima Department of Anatomy Keio University School of MedicineShinjuku-kuTokyoJapan Department of Molecular Neurobiology Institute for Developmental ResearchAichi Developmental Disability CenterKasugaiAichiJapan

The cerebral cortex is comprised of properly localized cell types that exert their specific *** the developing brain,cells migrate from the germinal region to their functional locations(Silva et al.,2019;Cossart and Garel,2022).For example,neocortical excitatory neurons are generated in the cerebral ventricular and subventricular zones,move to the developing cortical plate via radial migration,and reside in a radial array of six neuronal layers(Oishi and nakajima,2018).On the other hand,cortical interneurons are mainly generated in ganglionic eminences,migrate tangentially across the cerebral cortex,and reach their final destinations in the cortex(Lim et al.,2018).The failure of neuronal migration leads to defects in cortical layer *** the mechanisms of neuronal distribution have been well examined,how astrocytes are diffusely distributed in the cortex is still *** are glial cells in the cerebral cortex with several functions,including metabolic support and synapse formation(Abbott et al.,2006;Bosworth and Allen,2017;Allen and Lyons,2018).For example,astrocytes establish synaptic connectivity in the developing brain while they contact numerous synapses and maintain optimal neuronal activity in the adult *** the developing brain,astrocytes are primarily generated from radial glia after the neurogenic *** a certain type of astrocyte called fibrous astrocytes populates the white matter,protoplasmic astrocytes migrate to the cortical plate during neural network formation.

关键词： cerebral migrate Abbott

How are multiple satellites seen from the ground? Relative apparent motion and formation stabilization

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Astrodynamics 2024年第1期8卷 121-134页

作者： Kenta nakajima Yasuhiro Yoshimura Hongru Chen Toshiya Hanada Department of Aeronautics and Astronautics Kyushu University744 Motooka Nishi-kuFukuoka819-0395Japan

This paper answers how multiple satellites are seen from the ground. This question is inspired by space-advertising, a public exhibition in the night sky using a dot matrix of satellites that are bright enough to be seen by the naked eye. Thus, it is important for space advertisement that the specific dot matrix is seen. Moreover, the stability of the dot matrix during a visible span is very valuable. To stabilize the dot matrix, this study formulates an apparent position of a dot from a representative dot seen from the ground. The formulation, linear functions of a set of relative orbital elements, reveals the appearance of the dot matrix. The proposed relative variable in the formulation drives the instability of the dot matrix, thereby revealing an initial stable configuration of deputies from a chief. The arbitrary dot matrix designed using the configuration is stable even at low elevations without orbital control during the visible span.

关键词： formation flying relative motion stabilization astrodynamics multi-apparent motions space advertisement

Teukolsky-like equations with various spins in spherically symmetric spacetime

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Chinese Physics C 2024年第8期48卷 213-223页

作者： Ya Guo Hiroaki nakajima Wenbin Lin School of Physical Science and Technology Southwest Jiaotong UniversityChengdu 610031China School of Mathematics and Physics University of South ChinaHengyang 421001China

We study wave equations with various spins on the background of a general spherically symmetric *** obtain the unified expression of the Teukolsky-like master equations and the corresponding radial equations with the general *** also discuss the gauge dependence in the gravitational-wave equations,which have appeared in previous studies.

关键词： gravitational wave effective one-body dynamics Teukolsky equation wave equations Klein-Gordon equation Weyl equation Maxwell equation

Usefulness of Newly Devised Clomiphene Citrate Administration Method Compared with the Conventional Method in Ovulation and Pregnancy

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Open Journal of Obstetrics and Gynecology 2024年第4期14卷 637-649页

作者： Makoto Kawamura Misaki Akiyama Remi nakajima Eri Satoi Yoko Ogaki Rieko Kanda Department of Obstetrics and Gynecology Kohseichuo General Hospital Tokyo Japan

Objective: Since not all women wish to conceive a child through aggressive treatment, we investigated the usefulness of modified repeated intracyclic clomiphene citrate (CC) therapy (repeated CC therapy) as a newly devised administration method. Methods: We evaluated the effects of CC administration on menstrual cycle length and retrospectively compared ovulation and pregnancy in 220 women who received CC at our hospital. Patients in the conventional method group received 50 mg per day for five days, starting on the fifth day of menstruation (withdrawal bleeding). Groups with and without menstrual cycle shortening after conventional CC administration were compared. The repeated CC therapy group was also compared with the non-shortened group. Repeated CC therapy was administered for the first five days as in the conventional method, and a second five-day repeat treatment was administered after an interval of five to seven days. Pregnancy rates, including indirect pregnancies, were evaluated by three different methods. Results: Ovulation and pregnancy rates were significantly better in the shortened group than in the non-shortened group (P < 0.001 and P = 0.010, respectively). Even in the non-shortened group, ovulation and pregnancy rates including indirect pregnancies were significantly improved when ovulation was observed with repeated CC therapy (P < 0.001 and P = 0.022, respectively). Conclusions: For patients whose menstrual cycle was not improved or shortened, repeated CC therapy as the newly devised CC administration method is useful as the next step after the conventional CC administration method.

关键词： Clomiphene Citrate Infertility Menstrual Cycle Ovulation Induction

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公共空间公共性的理论研究与分析框架构建

国际城市规划 2024年第3期39卷 82-90页

作者：蒋敏中岛直人卢峰重庆大学建筑城规学院东京大学工学部都市工学系

当前公共空间建设、管理和运营过程中日益多样的参与主体和灵活的合作模式拓展了公共空间的内涵与边界,这种转变带来一种区别于公私二元对立的新视角。在这样的背景下,将公共性视为一种价值和愿景而非“私”的对立面,从更本质的角度理... 详细信息

当前公共空间建设、管理和运营过程中日益多样的参与主体和灵活的合作模式拓展了公共空间的内涵与边界,这种转变带来一种区别于公私二元对立的新视角。在这样的背景下,将公共性视为一种价值和愿景而非“私”的对立面,从更本质的角度理解公共性的内涵有助于为复杂的利益博弈和权利平衡提供一种价值参照。本文通过研究西方代表性文献,分析了公私二元对立关系的瓦解过程,将公共性的核心价值总结为公开性、异质性和共同性,进而分析了公共空间公共性的价值。在此基础上,受现象学和新行为主义心理学的启发,本文提出将公共空间公共性视为一种主观感知的研究思路,继而融合公共空间的客观特征和使用人群的主观感知构建了一种新的公共空间公共性分析框架,规避了公私的二元对立,实现了评价主体的转变,且有助于反映文脉特征和地域差异,为公共空间公共性的定量研究和机制探索提供新的思路。

关键词：公共空间公共性理论研究公共性感知分析框架

Current perspectives of viral

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World Journal of Gastroenterology 2024年第18期30卷 2402-2417页

作者： Daisuke Usuda Yuki Kaneoka Rikuo Ono Masashi Kato Yuto Sugawara Runa Shimizu Tomotari Inami Eri nakajima Shiho Tsuge Riki Sakurai Kenji Kawai Shun Matsubara Risa Tanaka Makoto Suzuki Shintaro Shimozawa Yuta Hotchi Ippei Osugi Risa Katou Sakurako Ito Kentaro Mishima Akihiko Kondo Keiko Mizuno Hiroki Takami Takayuki Komatsu Tomohisa Nomura Manabu Sugita Department of Emergency and Critical Care Medicine Juntendo University Nerima HospitalNerima 177-8521TokyoJapan Department of Sports Medicine Faculty of MedicineJuntendo UniversityBunkyo 113-8421TokyoJapan

Viral hepatitis represents a major danger to public health,and is a globally leading cause of *** five liver-specific viruses:Hepatitis A virus,hepatitis B virus,hepatitis C virus,hepatitis D virus,and hepatitis E virus,each have their own unique epidemiology,structural biology,transmission,endemic patterns,risk of liver complications,and response to antiviral *** remain few options for treatment,in spite of the increasing prevalence of viral-hepatitiscaused liver ***,chronic viral hepatitis is a leading worldwide cause of both liver-related morbidity and mortality,even though effective treatments are available that could reduce or prevent most patients’*** 2016,the World Health Organization released its plan to eliminate viral hepatitis as a public health threat by the year 2030,along with a discussion of current gaps and prospects for both regional and global eradication of viral ***,treatment is sufficiently able to prevent the disease from reaching advanced ***,future therapies must be extremely safe,and should ideally limit the period of treatment necessary.A better understanding of pathogenesis will prove beneficial in the development of potential treatment strategies targeting infections by viral *** review aims to summarize the current state of knowledge on each type of viral hepatitis,together with major innovations.

关键词： Hepatitis A virus Hepatitis B virus Hepatitis C virus Hepatitis D virus Hepatitis E virus Current perspectives

基于图像处理技术的轨道车辆底部视觉检测系统

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智慧轨道交通 2024年第2期61卷 98-100页

作者： Akihide Uno Takehito Fujii Hiroyuki nakajima [日]Masanori Endo 林凯(译) 王慧(译) 宋微(译) 吕俊超(译) 不详

利用图像处理技术,本文开发了一种用于机车车辆故障检测的系统。该系统能够自动检测诸如底部设备紧固螺栓松动或设备箱盖手柄转动等故障,如有必要,检验人员可以根据该系统显示的图像对机车车辆进行具体检查。目前系统已经具备了车辆底... 详细信息

利用图像处理技术,本文开发了一种用于机车车辆故障检测的系统。该系统能够自动检测诸如底部设备紧固螺栓松动或设备箱盖手柄转动等故障,如有必要,检验人员可以根据该系统显示的图像对机车车辆进行具体检查。目前系统已经具备了车辆底部设备侧面检测功能,我们正致力于将该系统应用于车辆底部设备中间区域及车顶设备的检测。本文对该系统及其用户界面进行了概述。

关键词：机车车辆底部设备检查图像处理线路摄像头

Gravitational-wave equation in effective one-body background for spinless binary

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Science China(Physics,Mechanics & Astronomy) 2023年第7期66卷 29-37页

The effective one-body method provides a framework to apply the black hole perturbation theory to the binary system where two masses can be *** study the gravitational-wave equation in the background of the effective one-body system for the spinless binary,which is in general available with the spherically symmetric background as *** obtain the gauge conditions for the decoupled wave equation,and also give the solutions to the gauge conditions in terms of the metric perturbation for a special case,which extends the result by Jing et al.(***.65,260411(2022)).Finally we obtain the gravitational-wave equation which is the generalization of the Teukolsky equation.

关键词： gravitational-wave equation Teukolsky equation effective one-body system Newman-Penrose formalism

Generation of micro/nano hybrid surface structures on copper by femtosecond pulsed laser irradiation

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Nanomanufacturing and Metrology 2022年第3期5卷 274-282页

作者： Ayumi nakajima Masaki Omiya Jiwang Yan School of Integrated Design Engineering Graduate School of Science and TechnologyKeio UniversityYokohama 223-8522Japan Department of Mechanical Engineering School of Science and TechnologyKeio UniversityYokohama 223-8522Japan

The delamination of copper lead frames from epoxy molding compounds(EMC)is a severe problem for microelectronic devices,as it leads to reduced heat dissipation or circuit *** micro/nanoscale surface structuring of copper is a promising method to improve the copper-EMC interfacial *** this study,the generation of micro/nano hybrid structures on copper surfaces through femtosecond pulsed laser irradiation is proposed to improve interfacial *** micro/nano hybrid structures were realized by generating nanoscale laser-induced periodic surface structures(LIPSS)on microscale parallel *** types of hybrid surface structures were generated by changing the laser polarization direction,fluence,and scanning *** a specific aspect ratio of microgrooves,a latticed structure was generated on the sides of microgrooves by combining LIPSS formation and direct laser interference *** study provides an efficient method for the micro/nanoscale hybrid surface structure formation for interfacial adhesion improvement between copperand EMC.

关键词： Femtosecond pulsed laser Copper Metal surface LIPSS Direct laser interference patterning-Micro/nano hybrid structures