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Artselenin, a New Guaianolide from Artemisia selengensis

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Chinese Chemical Letters 1997年第12期8卷 0-0页

作者： jin feng HU and xiao Zhang feng(Institute of Materia Medica Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050)

Artselenin, a new gualanolide isolated from Artemisia selengensis and its structure determination by spectral data are reported

关键词： Artselenin a New Guaianolide from Artemisia selengensis

县域经济视角下南方民族地区农村青年就业模式研究——以广西恭城瑶族自治县为例

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安徽农业科学 2011年第24期39卷 15116-15118,15125页

作者：俸晓锦合肥工业大学管理学院安徽合肥230009 广西工学院教务处广西柳州545006

通过问卷调查,对生态农业县和非生态农业县农村青年的就业心理进行了比较分析,指出县域经济发展是影响农村青年就业模式的主要因素。并以广西恭城瑶族自治县为例,阐述了南方民族地区生态农业县农村青年多元一体化就业的成功模式及县域... 详细信息

通过问卷调查,对生态农业县和非生态农业县农村青年的就业心理进行了比较分析,指出县域经济发展是影响农村青年就业模式的主要因素。并以广西恭城瑶族自治县为例,阐述了南方民族地区生态农业县农村青年多元一体化就业的成功模式及县域经济发展与农村青年就业的互动机制。进而提出了依托地方资源,推动县域经济健康发展,促进农村青年就业与城乡经济互动发展的思路。

关键词：县域经济南方民族地区农村青年就业模式

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Observation of acoustic hybrid topological phases induced by the p-d orbital interactions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 132-139页

作者： xiao Xiang feng Gao Yu-Gui Peng Peng Wu Zong-Lin Li Xue-feng Zhu School of Physics and Innovation Institute Huazhong University of Science and Technology

In spinless systems,growing attention has recently been attracted to synthetic gauge fields,which redefine the fundamental crystal symmetries by utilizing the projective algebraic ***,synthetic gauge fields have been commonly investigated in single orbital systems,and explorations on hybrid orbitals remain elusive in ***,we report the experimental observation of hybrid topological phases induced by hybrid synthetic gauge flux,which is formed by the interaction between p and d orbitals embedded in acoustic *** breaking the translation symmetries of Lxand/or Ly,we unambiguously demonstrate the first-order M?bius edge states and higher-order corner *** work establishes a platform for seeking exotic topological phases induced by hybrid-orbitals interactions and initializing the framework of hybrid-orbitalsrelated topological *** applications can be anticipated in scenarios such as high-quality sensing and robust wave trapping due to the stepwise energy distribution of the hybrid topological phase.

关键词： topological insulator synthetic gauge field projective symmetry corner states

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基于分层象限空间的P2P超级节点拓扑构造

计算机学报 2010年第6期33卷 988-1003页

作者：冯劲潇陈贵海谢俊元南京大学计算机软件新技术国家重点实验室南京210093

现有的P2P超级节点拓扑分为非结构化超级节点拓扑和结构化超级节点拓扑,前者支持模糊查询,鲁棒性好,但路由效率低,查询结果具有不确定性,后者支持数据定位,路由效率高,负载均衡性好,但不支持模糊查询,也不适应高度动态环境.文中将两种... 详细信息

现有的P2P超级节点拓扑分为非结构化超级节点拓扑和结构化超级节点拓扑,前者支持模糊查询,鲁棒性好,但路由效率低,查询结果具有不确定性,后者支持数据定位,路由效率高,负载均衡性好,但不支持模糊查询,也不适应高度动态环境.文中将两种超级节点拓扑结构的优点结合起来,提出一种基于分层象限空间的新型超级节点拓扑Quad.它在路由方面同时支持数据定位和模糊查询,并解决了结构化超级节点拓扑对动态性支持差的问题.分析和模拟结果表明:和现有的超级节点拓扑相比,Quad数据定位在常数度数下达到O(logN)定位性能,并在路由效率和路由状态数上获得更好的权衡.在动态环境中,Quad能更有效地处理超级节点失效;在性能上,它具有更少的拓扑构建和失效修复成本并具有良好的负载均衡性.

关键词：对等网络超级节点拓扑分层象限空间负载均衡

Inflammatory airway features and hypothalamic-pituitary- adrenal axis function in asthmatic rats combined with chronic obstructive pulmonary disease

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Chinese Medical Journal 2010年第13期123卷 1720-1726页

作者： CAI Cui ZHANG Hong-ying LE jing-jing DONG jing-cheng CUI Yan XU Chang-qing LIU Bao-jun WU jin-feng DUAN xiao-hong CAO Yu-xue Lab of Integrative Medicine for Lung Inflammation and Cancers Huashan Hospital Fudan University Shanghai 200040 China

Background Bronchial asthma （BA） and chronic obstructive pulmonary disease （COPD） are both inflammatory airway diseases with different characteristics. However, there are many patients who suffer from both BA and COPD. This study was to evaluate changes of inflammatory airway features and hypothalamic-pituitary-adrenal （HPA） axis function in asthmatic rats combined with COPD. Methods Brown Norway （BN） rats were used to model These three models were compared and evaluated with the inflammatory airway diseases of BA, COPD and COPD＋BA. respect to clinical symptoms, pulmonary histopathology, airway hyperresponsiveness （AHR）, inflammatory cytokines and HPA axis function. Results The inflammatory airway features and HPA axis function in rats in the COPD＋BA model group were greatly influenced. Rats in this model group showed features of the inflammatory diseases BA and COPD. The expression of inflammatory cytokines in this model group might be up or downregulated when both disease processes are present. The levels of corticotrophin releasing hormone mRNA and corticosterone in this model group were both significantly decreased than those in the control group （P 〈0.05）. Conclusions BN rat can be used as an animal model of COPD＋BA. By evaluating this animal model we found that the features of inflammation in rats in this model group seem to be exaggerated. The HPA axis functions in rats in this model group have been disturbed or impaired, which is prominent at the hypothalamic level.

关键词： chronic obstructive pulmonary disease bronchial asthma inflammatory airway disease hypothalamic-pituitary-adrenal axis

Searching for new drugs to treat Alzheimer’s disease dementia through multiple pathways

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World Journal of Clinical Cases 2025年第1期13卷 22-28页

作者： Hua Bai xiao-feng feng Department of Neurology The Third Affiliated Hospital of Guizhou Medical UniversityDuyun 558099Guizhou ProvinceChina Department of Neurology Wulong Branch of the People's Hospital Affiliated to Chongqing UniversityWulong 408500ChongqingChina Department of Neurology Guizhou Medical UniversityGuiyang 550004Guizhou ProvinceChina

Dementia is a group of diseases,including Alzheimer's disease(AD),vascular dementia,Lewy body dementia,frontotemporal dementia,Parkinson's disease dementia,metabolic dementia and toxic *** treatment of dementia mainly includes symptomatic treatment by controlling the primary disease and accompanying symptoms,nutritional support therapy for repairing nerve cells,psychological auxiliary treatment,and treatment that improves cognitive function through *** them,drug therapy to improve cognitive function is *** review focuses on introducing and commenting on some recent progress in exploring drugs to improve cognitive function,especially the new progress in drug treatment for *** mainly discuss the opportunities and challenges in finding and developing new therapeutic drugs from the aspects of acetylcholinesterase,N-methyl-D-aspartate glutamate receptor,amyloid protein,tau protein and chronic immune inflammation.

关键词： Alzheimer's disease Dementia Cholinesterase inhibitor Beta amyloid Tau protein

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变压缩比下自由活塞式内燃发电机的效率分析

上海交通大学学报 2009年第5期43卷 745-749页

作者：李庆峰肖进黄震上海交通大学动力机械与工程教育部重点实验室上海200240

利用Matlab/Simulink软件耦合Chemkin程序以及电磁场有限元工具对均质混合压燃(HCCI)自由活塞式内燃发电机(FPLA)建立仿真模型,分析了不同负荷和燃空当量比下FPLA的可变压缩特性,以及系统效率和输出电功率.结果表明:FPLA能够根据负荷灵... 详细信息

利用Matlab/Simulink软件耦合Chemkin程序以及电磁场有限元工具对均质混合压燃(HCCI)自由活塞式内燃发电机(FPLA)建立仿真模型,分析了不同负荷和燃空当量比下FPLA的可变压缩特性,以及系统效率和输出电功率.结果表明:FPLA能够根据负荷灵活调节压缩比,以拓宽内燃机的运行范围;在高压缩比下能够大幅提高内燃机的效率与输出功率.

关键词：自由活塞发电机压缩比效率

创新性综合实验在食品科学专业人才培养中应用

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微生物学通报 2007年第3期34卷 608-611页

作者：刘树青江晓路牟海津冯金晓刘文晓中国海洋大学食品科学与工程学院青岛266003

以培养学生综合素质为指导思想,针对传统实验教学中的不足,在食品微生物实验中建立新的实验教学体系,验证性实验改为连续综合性实验,逐步引入创新设计性实验。微生物学实验改革使学生的综合能力得到了良好的训练,同时提供了实践的平台,... 详细信息

以培养学生综合素质为指导思想,针对传统实验教学中的不足,在食品微生物实验中建立新的实验教学体系,验证性实验改为连续综合性实验,逐步引入创新设计性实验。微生物学实验改革使学生的综合能力得到了良好的训练,同时提供了实践的平台,学生可以将自己的创意通过创新性综合实验付诸实施,培养了创新意识和综合实验能力,收到良好的教学效果。

关键词：创新性综合实验食品科学教学改革实验教学

Sky location of massive black hole binaries in the foreground of Galactic white dwarf binaries

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 97-108页

作者： Pan Guo Hong-Bo jin Cong-feng Qiao Yue-Liang Wu The International Centre for Theoretical Physics Asia-Pacific University of Chinese Academy of Sciences The School of Physical Sciences University of Chinese Academy of Sciences Institute for Frontiers in Astronomy and Astrophysics Beijing Normal University National Astronomical Observatories Chinese Academy of Sciences Institute of Theoretical Physics Chinese Academy of Sciences

For space-based gravitational wave （GW） detection,the main noise source for massive black hole binaries （MBHBs） is attributed to approximately 10～7double white dwarf binaries in the *** a GW source,the amplitude of the detector response,recorded by a space-based gravitational wave detector,exhibits a modulation effect with a year period when observing the source from various orbital *** the adverse conditions mentioned above,where there is a strong foreground noise and annual modulation in the signals,we employed the wavelet transform and the strong-amplitude relevant orbital position search methods,which allows the weak MBHB sources to achieve higher locating *** detail,for two MBHB sources of lower intensity,the precision of luminosity distance,represented by the ratio ?DL/DLat the 95%confidence level,is enhanced by factors of ～*** angular resolutions,denoted by??s,are enhanced by a factor of ～*** improvements increase the number of detectable GW sources,facilitate multi-messenger follow-up observations and provide constraints on the cosmological constant.

关键词： space-based gravitational wave detection gravitational waves massive black hole binaries