检索结果-南通市图书馆

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

社会网络与选任机制:以J市个案调查为例

中国农业大学学报（社会科学版） 2007年第3期24卷 92-117页

作者：林彬丁小丁庞丽君北京大学社会学系中国(海南)改革发展研究院加拿大卡尔加里大学人类学系

魏昂德指出了中国干部选任的两种机制:合法性机制和效率机制。文章强调了两种机制之外的关系机制以及机制之间的关系。干部选任制度有刚性的一面,也存在弹性的空间,这构成非正式制度运作的基础。关系机制透过正式制度对干部选任发生了... 详细信息

魏昂德指出了中国干部选任的两种机制:合法性机制和效率机制。文章强调了两种机制之外的关系机制以及机制之间的关系。干部选任制度有刚性的一面,也存在弹性的空间,这构成非正式制度运作的基础。关系机制透过正式制度对干部选任发生了更大的影响。

关键词：社会网络干部选任关系机制决策层关系信号

Deep-sea oil and gas plow-type cable broadband wide-azimuth 3D seismic acquisition and imaging

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2025年第3期68卷 683-701页

作者： Yunfei YE Li-Yun FU lijun MI Chuncai CHEN Zhenhua JIAO Hanming GU Yu WU China National Offshore Oil Corporation Research Institute Co. Ltd. National Key Laboratory of Deep Oil and Gas China University of Petroleum (East China) China Oilfield Services Limited School of Geophysics and Space Information China University of Geosciences (Wuhan) Sinopec Geophysical Research Institute Co. Ltd.

In recent years, significant advancements have been made in deep-sea broadband seismic acquisition and its support data processing technologies. Compared with traditional constant-depth flat-cable acquisition, variable-depth cable acquisition significantly differentiates frequency notches and enhances information complementarity between traces, effectively broadening the frequency band of acquired seismic data. Based on the international slanted cable technology, China has independently developed a plow-type cable seismic acquisition and imaging system: a combination of slanted and deep-deployed flat cables,along with a deghosting processing technique. This innovation optimizes the segmented depth variation of cables, further improving low-frequency response and broadening the high-frequency range. This paper extends the 2D technology into three dimensions, establishing an integrated technology system for deep-sea broadband, wide-azimuth seismic acquisition and imaging, consisting of three-ship and six-source acquisition equipments, 3D plow-type cable mat, blended acquisition design with rolling dual-random sources, and wavenumber-domain 3D deghosting techniques. Applications to two tectonic zones in the South China Sea demonstrate that the frequency band of seismic data is expanded from three octaves(8–85 Hz) by conventional acquisition and imaging methods to five octaves(2–130 Hz), significantly improving the data quality and imaging precision of deep structures. This advancement effectively supports the researches of fundamental geology, hydrocarbon accumulation,reservoir prediction, and fluid identification in deep-water basins. The successful deployment of these technologies has advanced China's deep-sea oil and gas exploration and has been generalized to more than ten international deep-sea oilfields.

关键词： Deep-sea oil and gas Broadband wide-azimuth 3D plow-type cable deployment Three-ship six-source blended acquisition Deghosting

Repetitive transcranial magnetic stimulation in Alzheimer’s disease:effects on neural and synaptic rehabilitation

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第2期20卷 326-342页

作者： Yi Ji Chaoyi Yang Xuerui pang Yibing Yan Yue Wu Zhi Geng Wenjie Hu Panpan Hu Xingqi Wu Kai Wang Department of Neurology The First Affiliated Hospital of Anhui Medical UniversityHefeiAnhui ProvinceChina Anhui Province Key Laboratory of Cognition and Neuropsychiatric Disorders HefeiAnhui ProvinceChina Collaborative Innovation Center of Neuropsychiatric Disorders and Mental Health HefeiAnhui ProvinceChina Institute of Artificial Intelligence Hefei Comprehensive National Science CenterHefeiAnhui ProvinceChina Department of Psychology and Sleep Medicine The Second Affiliated Hospital of Anhui Medical UniversityHefeiAnhui ProvinceChina

Alzheimer’s disease is a neurodegenerative disease resulting from deficits in synaptic transmission and *** Alzheimer’s disease brain tends to be hyperexcitable and hypersynchronized,thereby causing neurodegeneration and ultimately disrupting the operational abilities in daily life,leaving patients *** transcranial magnetic stimulation is a cost-effective,neuro-modulatory technique used for multiple neurological *** the past two decades,it has been widely used to predict cognitive decline;identify pathophysiological markers;promote neuroplasticity;and assess brain excitability,plasticity,and *** has also been applied to patients with dementia,because it can yield facilitatory effects on cognition and promote brain recovery after a neurological ***,its therapeutic effectiveness at the molecular and synaptic levels has not been elucidated because of a limited number of *** study aimed to characterize the neurobiological changes following repetitive transcranial magnetic stimulation treatment,evaluate its effects on synaptic plasticity,and identify the associated *** review essentially focuses on changes in the pathology,amyloidogenesis,and clearance pathways,given that amyloid deposition is a major hypothesis in the pathogenesis of Alzheimer’s *** mechanisms associated with repetitive transcranial magnetic stimulation procedures and different pathways mediating gene transcription,which are closely related to the neural regeneration process,are also ***,we discuss the outcomes of animal studies in which neuroplasticity is modulated and assessed at the structural and functional levels by using repetitive transcranial magnetic stimulation,with the aim to highlight future directions for better clinical translations.

关键词： Alzheimer’s disease amyloid deposition apoptotic mechanisms biomarker neural regeneration neurodegeneration repetitive transcranial magnetic stimulation synaptic plasticity

丙型肝炎患者血清丙型肝炎病毒核糖核酸含量与肝功能的相关性研究

在线全文

学校读者我要写书评

暂无评论

中国实用医刊 2018年第18期45卷 39-41页

作者：庞丽君张剑英山西省太原市第三人民医院输血科 030012 山西省太原市红十字中心检验科 030012

目的研究丙肝患者血清中的丙型肝炎病毒核糖核酸（HCV-RNA）含量与肝功能的相关性，旨在为临床丙型肝炎的早期诊断和有效的治疗监测提供一定的参考依据。方法选取2017年3月至2018年3月在医院治疗的丙型肝炎患者680例，采用实时荧光定量... 详细信息

目的研究丙肝患者血清中的丙型肝炎病毒核糖核酸（HCV-RNA）含量与肝功能的相关性，旨在为临床丙型肝炎的早期诊断和有效的治疗监测提供一定的参考依据。方法选取2017年3月至2018年3月在医院治疗的丙型肝炎患者680例，采用实时荧光定量PCR法检测患者血清中HCV-RNA含量，根据血清中HCV-RNA的含量将患者分为A、B、C、D、E、F组。分析HCV-RNA含量与肝功能的关系。结果丙型肝炎患者血清HCV-RNA含量不断增加，血清丙氨酸氨基转移酶（ALT）、天门冬氨酸氨基转移酶（AST）、AST／ALT、芈乳糖基葡糖基转移酶（GGT）和总胆红素（TBIL）值也不断升高。相反，血浆血清白蛋白与球蛋白之比（A／G）呈下降趋势，差异有统计学意义（P〈0．05）。结论检测丙型肝炎患者血清HCV-RNA含量对临床HCV的早期诊断及治疗具有重要的价值，综合其含量以及肝功能指标的表达情况可以对HCV患者进行有效的诊断和监测。

关键词：丙型肝炎患者 HCV-RNA含量肝功能

Research progress in metal-organic frameworks and their derivatives in electrochemistry

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2025年

作者： Lingling Chen Yuxin Liu Yichun Su Wenchen Zhu Guangyu Du Huan pang School of Chemistry and Chemical Engineering Yangzhou University Department of Applied Physics The Hong Kong Polytechnic University Interdisciplinary Materials Research Center Institute for Advanced Study Chengdu University State Key Laboratory of Coordination Chemistry Nanjing University

Metal-organic frameworks (MOFs) are distinguished by their unique porosity and meticulously ordered framework structures,setting them apart from conventional complexes. These materials are defined by their highly organized crystalline and pore structures, extensive surface areas, robust porosity, and superior adsorption capabilities. Owing to their exceptional structural and functional attributes, MOFs and their derivatives are leveraged across a broad spectrum of applications, demonstrating significant potential across diverse sectors. In recent times, the scientific community has increasingly focused on MOFs, underscoring their growing importance in research. Despite the promising array of applications for MOFs and their derivatives,challenges persist in practical deployments, and the pathway to research advancement remains daunting. This document delves into the synthesis and various applications of MOFs and their derivatives, particularly in the domains of energy storage, catalysis,sensing, and water treatment. It also highlights the ongoing research progress in the field of electrochemistry, including developments in lithium ion batteries (LIBs), lithium-sulfur batteries (LSBs), zinc-ion batteries (ZIBs), aqueous nickel-zinc batteries (NZBs), and supercapacitors. Finally, it provides an outlook on the future prospects and potential hurdles facing the development of MOF materials.

关键词：

How Does Family Financial Stress Impair Employees’ Mental Health? Spillover Effect of Stress from Home to Workplace

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

International Journal of Mental Health Promotion 2025年第2期27卷 231-240页

作者： Mian Xia Baoguo Xie lijun He Jingru Chen Key Laboratory of Human Development and Mental Health of Hubei Province School of Psychology Central China Normal University Wuhan 430079 China Key Laboratory of Adolescent Cyberpsychology and Behavior (CCNU) Ministry of Education Wuhan 430079 China School of Management Wuhan University of Technology Wuhan 430070 China Research Institute of Digital Governance and Management Decision Wuhan University of Technology Wuhan 430070 China Business School Hohai University Nanjing 211100 China Yale Health Mental Health & Counseling Yale University New Haven CT 06511 USA

Objectives Recently, how family-related factors influence employees’ mental health has garnered increasing attention from researchers and practitioners. Drawing on the cognitive appraisal theory of stress, this study aims to examine how and when family financial stress affects the employees’ mental health and investigate the mediating role of performance stress and the moderating role of workplace competition. Methods A cross-sectional survey was conducted with 23,520 Chinese employees by using a voluntary and anonymous structured questionnaire, which included family financial stress, performance stress, symptom checklist 90 (SCL-90) scale, and workplace competition. The data were analyzed using SPSS 26.0 software and macro PROCESS. Results The analysis of the mediating effect showed that performance stress mediated the relationship between family financial stress and psychological depression (b = 0.064, SE = 0.002, p < 0.0001) and physical somatization (b = 0.042, SE = 0.002, p < 0.0001), indicating spillover effects of stress from home to workplace. The moderating mediation analysis revealed that the crossover effects were amplified by workplace competition. For psychological depression, index of moderated mediation was: b = 0.012, SE = 0.001, p < 0.001; For physical somatization, index of moderated mediation was: b = 0.008, SE = 0.001, p < 0.001. Conclusion Performance stress acts as a mediator in the link between family financial stress and mental health. Furthermore, the mediating effects was amplified by workplace competition. These findings suggest that workplace competition may serve to exacerbate the negative spillover effects from home to work through the mechanism of work-related stress. Organizations should consider implementing supportive measures to mitigate family financial stress, such as providing financial counseling and fostering a collaborative work environment, to reduce the adverse effects of family financial stress on employees’ mental health.

关键词： Family financial stress performance stress psychological depression physical somatization workplace competition

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

某特种车辆发动机缸盖数控加工工艺方案制定

新技术新工艺 2015年第4期 5-6页

作者：王利全庞利军张继平包头职业技术学院数控技术系内蒙古包头014030 北方重工集团专用机械公司内蒙古包头014030

发动机缸盖制造是汽车制造的核心部分,其反映了一个国家汽车制造业的整体发展水平。本文以某特种车辆发动机缸盖为例,就其加工内容、技术要求及刀具选取等方面进行了全面的分析,并制定了数控加工工艺方案。

关键词：发动机缸盖数控加工工艺方案制定

GC-2010气相色谱仪进样口互换解决进样故障

在线全文

学校读者我要写书评

暂无评论

分析仪器 2013年第5期 109-112页

作者：李涛庞丽君姚方方山东新时代药业有限公司费县273400

本文从毛细管柱进样口和填充柱进样口及相关气路的差异性等方面,介绍了两个进样口互换的维修经验,对气相色谱使用者和管理者具有一定的参考价值。

关键词：气相色谱仪进样口互换

miR-2940-1 is involved in the circadian regulation of oviposition in Aedes albopictus

在线全文

学校读者我要写书评

暂无评论

Insect Science 2025年第1期32卷 69-79页

作者： Xiaolin Xiao Ling Kong Zhensheng Xie Hongkai Liu lijun Cai Siyu Zhao Jiayong Zhou Shuang Liu Jing Wu Yiming Wu Peilin Wu Anthony A.James Xiao-Guang Chen Department of Pathogen Biology Institute of Tropical MedicineSchool of Public HealthSouthern Medical UniversityGuangzhouChina Department of Microbiology&Molecular Genetics University of CaliforniaIrvineCAUSA Department of Molecular Biology&Biochemistry University of CaliforniaIrvineCAUSA

The vast majority of all global species have circadian rhythm cycles that allow them to adapt to natural *** regular rhythms are regulated by core clock genes and recent studies have also implicated roles for microRNAs in this *** is an important circadian behavior in the reproductive cycle of insect vectors of diseases,and little is known about the rhythm or its regulation in *** albopictus is a diurnal mosquito that transmits arboviruses and is the major cause of outbreaks of dengue fever in *** analyzed the oviposition rhythm patterns of *** under different light/dark conditions and show that the mosquitoes have an oviposition peak between zeitgeber time 9(ZT 9)and ZT ***,the antagomir-mediated knockdown of expression of the microRNA miR-2940-1 affected the oviposition rhythm of *** data support the conclusion that miR-2940-1 is involved in the regulation of oviposition rhythm in *** and provide a foundation for using oviposition rhythms as a new target for vector mosquito control.

关键词： Aedes albopictus miR-2940-l oviposition rhythm regulation