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圈养条件下狍繁殖行为的研究

四川动物 2008年第6期27卷 1093-1096页

作者：李长生吉林农业科技学院吉林吉林132101

本试验研究了狍(东北亚种)在人工饲养条件下的繁殖行为。研究结果表明:(1)在交配季节,雄狍具有卷唇嗅闻、扒土等行为;雄狍与雌狍的卧息、冲突行为差异显著,尾阴探究差异极显著。(2)妊娠雌狍选择隐蔽处分娩产仔。(3)在临产前,雌狍有临产... 详细信息

本试验研究了狍(东北亚种)在人工饲养条件下的繁殖行为。研究结果表明:(1)在交配季节,雄狍具有卷唇嗅闻、扒土等行为;雄狍与雌狍的卧息、冲突行为差异显著,尾阴探究差异极显著。(2)妊娠雌狍选择隐蔽处分娩产仔。(3)在临产前,雌狍有临产表现,采取侧卧分娩姿势,仔狍娩出后,舔食仔狍的胎水和胎膜。

关键词：狍(东北亚种) 圈养繁殖行为

两分量Bose-Einstein凝聚体的非线性Ramsey干涉

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物理学报 2009年第7期58卷 4396-4401页

作者：栗生长段文山西北师范大学物理与电子工程学院兰州730070

以非线性Rosen-Zener隧穿理论为基础,用两分量Bose-Einstein凝聚体设计了非线性Ramsey干涉计.通过数值模拟实验在时间域上观察到了丰富的Ramsey干涉图样,凝聚体中原子间重要的非线性相互作用导致这些干涉图样明显不同于线性Ramsey干涉... 详细信息

以非线性Rosen-Zener隧穿理论为基础,用两分量Bose-Einstein凝聚体设计了非线性Ramsey干涉计.通过数值模拟实验在时间域上观察到了丰富的Ramsey干涉图样,凝聚体中原子间重要的非线性相互作用导致这些干涉图样明显不同于线性Ramsey干涉时的正弦型条纹.通过进一步对干涉图样作Fourier分析,发现干涉图样的基频能够精确反映系统的非线性和不对称性特征,从而为测量原子的相关性质提供了理论依据.

关键词： Bose-Einstein凝聚非线性Ramsey干涉 Rosen-Zener隧穿

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房地产税功能定位的国际比较研究

经济体制改革 2017年第6期 166-170页

作者：李长生上海财经大学公共经济与管理学院

房地产税具有筹集财政收入、调控房地产市场、调节收入分配等三大功能。由于各国在整体税制、财政目标以及支出责任方面存在差异,当今世界主要国家对房地产税的功能定位大致可分为三种模式:以英国、美国、加拿大等国家为代表的筹集地方... 详细信息

房地产税具有筹集财政收入、调控房地产市场、调节收入分配等三大功能。由于各国在整体税制、财政目标以及支出责任方面存在差异,当今世界主要国家对房地产税的功能定位大致可分为三种模式:以英国、美国、加拿大等国家为代表的筹集地方财政收入模式;以韩国、日本等为代表的调节房地产市场模式;以新加坡为代表的调节收入分配模式。本文分析了这三种功能定位模式的形成背景、主要内容及其政策效应,为我国房地产税制改革提供借鉴。

关键词：房地产税功能定位选择模式

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无心轴托辊的数字化加工

机床与液压 2005年第11期33卷 30-31页

作者：李长胜河南机电高等专科学校机械工程系河南新乡453002

针对传统的设计与制造方法,提出了无心轴托辊的数字化加工,从而将无心轴托辊的设计过程和制造过程,由设计室和车间移植到计算机上来虚拟完成,实现了在制造前就可评估所设计的工艺,同时分析了其社会效益和经济效益。

关键词：数字化加工无心轴托辊虚拟制造

The Multiple Roles of Autophagy in Neural Function and Diseases

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Neuroscience Bulletin 2024年第3期40卷 363-382页

作者： Yan-Yan li Zheng-Hong Qin Rui sheng Department of Pharmacology and Laboratory of Aging and Nervous Diseases Jiangsu Key laboratory of Neuropsychiatric DiseasesCollege of Pharmaceutical Sciences of Soochow UniversitySuzhou 215123China

Autophagy involves the sequestration and delivery of cytoplasmic materials to lysosomes,where proteins,lipids,and organelles are degraded and *** to the way the cytoplasmic components are engulfed,autophagy can be divided into macroautophagy,microautophagy,and chaperone-mediated ***,many studies have found that autophagy plays an important role in neurological diseases,including Alzheimer's disease,Parkinson's disease,Huntington's disease,neuronal excitotoxicity,and cerebral *** maintains cell homeostasis in the nervous system via degradation of misfolded proteins,elimination of damaged organelles,and regulation of apoptosis and ***-mTOR,Beclin 1,TP53,endoplasmic reticulum stress,and other signal pathways are involved in the regulation of autophagy and can be used as potential therapeutic targets for neurological ***,we discuss the role,functions,and signal pathways of autophagy in neurological diseases,which will shed light on the pathogenic mechanisms of neurological diseases and suggest novel targets for therapies.

关键词： Autophagy Neurodegenerative diseases Cerebral ischemia AMPK mTOR Beclin 1 TP53 Endoplasmic reticulum stress

Phosphine/Benzocyclone-based Neutral Nickel Catalysts for Ethylene Polymerization and Copolymerization with Polar Monomers

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Chinese Journal of Polymer Science 2024年第2期42卷 202-212,I0007页

作者： Fei Wang li Pan Vladislav A.Tuskaev Svetlana Ch.Gagieva Yue-sheng li Tianjin Key Lab of Composite&Functional Materials School of Material Science and EngineeringTianjin UniversityTianjin300072China Department of Chemistry Lomonosov Moscow State UniversityRussian Federation InstitutionLeninskie Gory 1Moscow119991Russian Federation A N Nesmeyanov Institute of Organoelement Compounds Russian Academy of SciencesVavilova st.28Moscow119991Russian Federation

The efficient copolymerization of olefin with polar monomers using nickel-based catalysts presents a longstanding challenge. In this contribution, three phosphine-benzocyclone ligands and corresponding neutral nickel catalysts(Ni1: Ar = Ph;Ni2: Ar = 2-(C_(6)H_(5))C_(6)H_(4);Ni3: Ar = 2-[2',6'-(Me O)_(2)-C_(6)H3]C_(6)H_(4)) were prepared and applied for the ethylene polymerization and copolymerization with polar monomers without any cocatalyst. The bulky substituent groups in complexes Ni2 and Ni3 contributed to high catalytic activities(up to 7.24×10^(6) and 9.04×10^(6)g·mol Ni^(-1)·h^(-1), respectively), and produced high-molecular-weight polyethylene(Mw up to 545.7 k Da). Complex Ni3 exhibited high activities for ethylene polymerization at the level of 10^(6) g·mol Ni^(-1)·h^(-1) across a wide range from 30 ℃ to 120 ℃, exhibiting excellent high temperature tolerance. These nickel complexes were also effectively employed in the copolymerization of ethylene with methyl acrylate, ethyl acrylate, butyl acrylate and lauryl acrylate, producing copolymers with high molecular weights(Mw up to 80.5 k Da) and high polar monomer incorporation(up to 8.2 mol%). Microstructure analyses revealed that the introduction of large sterically hindered substituents facilitated the incorporation of polar functional units into the polymer backbone. This study demonstrates the potential of these nickel-based catalysts for efficient copolymerization of olefin with polar monomers.

关键词： Neutral nickel catalyst Ethylene polymerization Copolymerization Polar acrylate monomers

Ground-layer Adaptive Optics for the 2.5 m Wide-field and High-resolution Solar Telescope

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Research in Astronomy and Astrophysics 2024年第3期24卷 224-236页

作者： Ying Yang Lan-Qiang Zhang Nan-Fei Yan Jin-sheng Yang Zhen li Teng-Fei Song Xue-Jun Rao chang-Hui Rao Key Laboratory on Adaptive Optics Chinese Academy of SciencesChengdu 610209China Institute of Optics and Electronics Chinese Academy of SciencesChengdu 610209China School of Electronic Electrical and Communication Engineering of the University of Chinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China School of Astronomy and Space Science Nanjing UniversityNanjing 210023China Key Laboratory of Modern A&A Ministry of EducationNanjing 210023China Yunnan Observatories Chinese Academy of SciencesKunming 650216.China

The 2.5 m wide-field and high-resolution solar telescope(WeHoST)is currently under developing for solar *** aims to achieve high-resolution observations over a super-wide field of view(FOV)of5′×5′,and a desired resolution of 0.3″.To meet the scientific requirements of WeHoST,the ground-layer adaptive optics(GLAO)with a specially designed wave front sensing system is as the primary *** introduce the GLAO configuration,particularly the wave front sensing *** analytic method,we simulate the performance of both classical AO and GLAO systems,optimize the wave front sensing system,and evaluate GLAO performance in terms of PSF uniformity and correction improvement across whole *** results indicate that,the classical AO will achieve diffraction-limited resolution;the suggested GLAO configuration will uniformly improve the seeing across the full 5′×5′FOV,reducing the FWHM across the axis FOV to less than0.3″(λ≥705 nm,r0≥11 cm),which is more than two times *** specially designed wave front sensor schedule offers new potential for WeHoST’s GLAO,particularly the multi-FOV GLAO and the flexibility to select the detected *** capabilities will significantly enhance the scientific output of the telescope.

关键词： instrumentation adaptive optics-instrumentation detectors-instrumentation high angular resolution-methods numerical-telescopes-Sun activity

Day-ahead P2P Energy Sharing Strategy Among Energy Hubs Considering Flexibility of Energy Storage and Loads

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CSEE Journal of Power and Energy Systems 2024年第3期10卷 1105-1118页

作者： Penghua li Wanxing sheng Qing Duan Jun liang Cunhao Zhu China Electric Power Research Institute Beijing 100192China School of Engineering Cardiff UniversityUK IEEE

Multi-energy systems are one of the key technologies to tackle energy crisis and environmental *** energy hub(EH)is a minimum multi-energy *** of multiple EHs through energy routers(ERs)can realize mutual energy *** paper proposes a peer-to-peer(P2P)energy sharing strategy between EHs including ERs in an interconnected system,which is divided into two *** the lower level,a method of determining the charging/discharging constraints of energy storage devices is *** on the Lyapunov optimization method,virtual queues are used to model the energy storage devices and flexible loads in the *** objective is to minimize the overall operating cost of the interconnected *** the upper level,a non-cooperative game model is introduced to minimize the cost of purchasing power from other EHs for each EH.A best response-based method is adapted to find the Nash *** simulation outcomes demonstrate that application of the proposed strategy can reduce operating costs of an interconnected system and each *** basis of a real-world dataset of interconnected EHs,both analytical and numerical results show the effectiveness of the proposed strategy.

关键词： Energy hub energy router Lyapunov optimization non-cooperative game peer to peer virtual queue

违法侦查行为的程序性制裁效果研究——以非法口供排除规则为中心

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现代法学 2012年第3期34卷 110-120页

作者：李昌盛西南政法大学重庆401120

不断出现的冤案及其背后的违法侦查问题使整个刑事司法的公信力日趋式微。学界和司法部门最高层认识到,只有通过建立非法证据排除规则,剥夺违法侦查者非法取证的利益,才能促使其依法取证。此谓程序性制裁。但是,在目前的机制下,由于我... 详细信息

不断出现的冤案及其背后的违法侦查问题使整个刑事司法的公信力日趋式微。学界和司法部门最高层认识到,只有通过建立非法证据排除规则,剥夺违法侦查者非法取证的利益,才能促使其依法取证。此谓程序性制裁。但是,在目前的机制下,由于我国违法侦查的发现几率极低、无法定罪的成本极小和次级制裁机制的乏力,程序性制裁根本无法成为依法取证的"激励机制"。因此,如果要使程序性制裁的威慑效果发挥作用,必须建立有效的违法侦查行为发现机制,把非法证据排除真正转变为违法侦查的成本,并使法院真正具备作出无罪判决的能力。

关键词：刑讯程序性制裁经济学分析排除几率无法定罪的成本次级制裁机制