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西藏交通警察道路执法工作的风险与防范
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作者 尼桑拉 《时代汽车》 2024年第12期184-186,共3页
西藏自治区自然、地理与气候环境复杂且特殊,道路交通环境相对恶劣,这导致当地交通警察道路执法工作面临诸多风险,包括警员人身安全和执法效能等风险。对此,文章对西藏交通警察道路执法工作风险进行了调查分析,从地区环境、警员安全意... 西藏自治区自然、地理与气候环境复杂且特殊,道路交通环境相对恶劣,这导致当地交通警察道路执法工作面临诸多风险,包括警员人身安全和执法效能等风险。对此,文章对西藏交通警察道路执法工作风险进行了调查分析,从地区环境、警员安全意识与技能、执法装备、社会宣传和教育等角度探讨了相关风险的成因,针对性相关风险成因,提出从优化警力配置与道路信息推送、加强警员培训、完善警务装备、加强法治化宣传教育等工作来消除相关风险,以期保障警员安全并改善西藏交通环境。 展开更多
关键词 西 harsh which leads to the local trac POLICE road LAW ENFORCEMENT work to face a lot of RISKS including the personal SAFETY of the POLICE ocers and LAW ENFORCEMENT eectiveness and other risks. In this regard this paper investigates and analyzes the RISKS of road LAW ENFORCEMENT work of the Xi Zang trac POLICE discusses the causes of the RISKS from the perspectives of regional environment POLICE SAFETY awareness and skills LAW ENFORCEMENT equipment social publicity and education and proposes to eliminate the RISKS by optimizing the allocation of POLICE force and road information delivery strengthening POLICE training improving POLICE equipment and strengthening the rule of LAW publicity and education etc. so as to guarantee the SAFETY of POLICE ocers and improve the eectiveness of LAW ENFORCEMENT so as to ensure the SAFETY of POLICE ocers and improve the trac environment in Xi Zang.
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New “Intellectual Networks” (Smart Grid) for Detecting Electrical Equipment Faults, Defects and Weaknesses
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作者 Alexander Yu. Khrennikov 《Smart Grid and Renewable Energy》 2012年第3期159-164,共6页
The most important elements of “intellectual networks” (Smart Grid) are the systems of monitoring the parameters of electrical equipment. Information-measuring systems (IMS), which described in this paper, were prop... The most important elements of “intellectual networks” (Smart Grid) are the systems of monitoring the parameters of electrical equipment. Information-measuring systems (IMS), which described in this paper, were proposed to use together with rapid digital protection against short-circuit regimes in transformer windings. This paper presents an application’s experience of LVI-testing, some results of the use of Frequency Response Analysis (FRA) to check the condition of transformer windings and infra-red control results of electrical equipment. The LVI method and short-circuit inductive reactance measurements are sensitive for detecting such faults as radial, axial winding deformations, a twisting of low-voltage or regulating winding, a losing of winding’s pressing and others. 展开更多
关键词 INTELLECTUAL NETWORKS Smart Grid Monitoring system Electrical equipment Information-Measuring system Frequency Response Analysis Transformer WINDING Fault Diagnostic Low Voltage Impulse Method SHORT-CIRCUIT Inductive REACTANCE Measurement
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Grounding Systems for Power Supply Facilities
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作者 Vladimir Anatolevich Konusarov Evgeniy Alekseevich Shutov Tatyana Evgenievna Turukina 《Energy and Power Engineering》 2019年第1期1-14,共14页
The goal of this work is creation of optimal grounding model at the substation 10/0.4 kV of the urban power distribution network. The electric current can pose a major threat to the man’s life and health. In addition... The goal of this work is creation of optimal grounding model at the substation 10/0.4 kV of the urban power distribution network. The electric current can pose a major threat to the man’s life and health. In addition to pose a threat for health, the rise of the short circuit, as a consequence of insulation faults, poses a threat to retirement of electric systems and fire risks. The reliable grounding system design has significant implications for protection of human being as well as for electrical facility protection. The set objective was performed on the base of analytical and software-based methods. Analytical method gives a qualitative indication at each step in analysis. It also allows evaluating the values effect on the result, but the method is not susceptible of tolerable accuracy, that is why analytical method serves as initial approximation in differentiating. Specified estimation can be performed in such software package as MATLAB or ETAP. Software-based estimation is based on the finite element method (FEM), the main advantage of which is the ability to create different forms of grounding and allows obtaining distribution graphs of the step potential on the earth’s surface and touch potential. The calculation results in comparison of analytical and software-based methods taking into account the grounding optimization. There are conclusions on the most effective ground network. 展开更多
关键词 Grounding Device Current-Using equipment Short-Circuit FAULT Single Phase-to-Ground FAULT Main STEP Down Substation (MSDS) TN-C TN-S TN-C-S TT IT Indirect Contact STEP Potential FEM IEEE
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THE CORRELATION STUDY BETWEEN PLASMA VISCOSITY AND FIBRINOGEN COAGULABILITY
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作者 Wang Chunren Yang Zibin Xi Tingfei(Institute of Basic Medicine,PUMC &. CAMS’ Beijing 100005,China)( National institute for the Control of Pharmaceutical andBiological Products, Bet im 100050,China)The microenviroment around fibrinogen molecules is v 《Chinese Journal of Biomedical Engineering(English Edition)》 1995年第4期187-188,共2页
THECORRELATIONSTUDYBETWEENPLASMAVISCOSITYANDFIBRINOGENCOAGULABILITYTHECORRELATIONSTUDYBETWEENPLASMAVISCOSITY... THECORRELATIONSTUDYBETWEENPLASMAVISCOSITYANDFIBRINOGENCOAGULABILITYTHECORRELATIONSTUDYBETWEENPLASMAVISCOSITYANDFIBRINOGENCOAG... 展开更多
关键词 on screen or the front of panelo f the equipment.There are ONE YEAR or half a YEAR for TRAINING of nursing STAFF in ICU in advanced countries.There should be short-term TRAINING (one to three months) according to the condition of ourcountry.3. How to tra
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Key technologies and practice for gas field storage facility construction of complex geological conditions in China 被引量:6
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作者 MA Xinhua ZHENG Dewen +3 位作者 SHEN Ruichen WANG Chunyan LUO Jinheng SUN Junchang 《Petroleum Exploration and Development》 2018年第3期507-520,共14页
In view of complex geological characteristics and alternating loading conditions associated with cyclic large amount of gas injection and withdrawal in underground gas storage(UGS) of China, a series of key gas storag... In view of complex geological characteristics and alternating loading conditions associated with cyclic large amount of gas injection and withdrawal in underground gas storage(UGS) of China, a series of key gas storage construction technologies were established, mainly including UGS site selection and evaluation, key index design, well drilling and completion, surface engineering and operational risk warning and assessment, etc. The effect of field application was discussed and summarized. Firstly, trap dynamic sealing capacity evaluation technology for conversion of UGS from the fault depleted or partially depleted gas reservoirs. A key index design method mainly based on the effective gas storage capacity design for water flooded heterogeneous gas reservoirs was proposed. To effectively guide the engineering construction of UGS, the safe well drilling, high quality cementing and high pressure and large flow surface injection and production engineering optimization suitable for long-term alternate loading condition and ultra-deep and ultra-low temperature formation were developed. The core surface equipment like high pressure gas injection compressor can be manufactured by our own. Last, the full-system operational risk warning and assessment technology for UGS was set up. The above 5 key technologies have been utilized in site selection, development scheme design, engineering construction and annual operations of 6 UGS groups, e.g. the Hutubi UGS in Xinjiang. To date, designed main indexes are highly consistent with actural performance, the 6 UGS groups have the load capacity of over 7.5 billion cubic meters of working gas volume and all the storage facilities have been running efficiently and safely. 展开更多
关键词 gas field STORAGE trap dynamic SEALING capacity key index design effective STORAGE volume drilling and COMPLETION in ultra-deep and ultra-low pressure formation ALTERNATING load surface engineering core equipment risk assessment and control
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变速恒频双馈风电机组分段分层控制策略的研究 被引量:53
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作者 李晶 方勇 +1 位作者 宋家骅 王伟胜 《电网技术》 EI CSCD 北大核心 2005年第9期15-21,共7页
针对并网后变速恒频双馈风电机组的优化运行及其与电网的协调问题,依据分段分层控制思想,提出了变速恒频风电机组的并网控制策略:按照风速将风电机组的控制分为两个阶段,即低风速的最大风能追踪控制阶段和高风速的恒功率控制阶段,同时... 针对并网后变速恒频双馈风电机组的优化运行及其与电网的协调问题,依据分段分层控制思想,提出了变速恒频风电机组的并网控制策略:按照风速将风电机组的控制分为两个阶段,即低风速的最大风能追踪控制阶段和高风速的恒功率控制阶段,同时依据分层思想将风电机组电气部分的控制分为参考值的整定和对参考值的跟踪两层控制。利用该分段分层控制策略,对北方某风电场及其接入系统中风电机组的运行特性和接入系统中关键性节点的电压特性进行了仿真分析,结果表明该控制策略不但可以实现风电机组的优化运行,而且能较充分地发挥风电机组中双馈发电机的无功调节能力,提高风电机组并网后的电压稳定性,保证全网无功优化运行。 展开更多
关键词 仿
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Optimal Distribution of N-Team Interacting Decision Makers with Hierarchical Command Inputs That Are Predicated on Order Statistics
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作者 Michael Olatunji Oladejo Uchenwa Linus Okafor +1 位作者 Darius Tienhua Chinyio Celestine Ozoemena Uwa 《Open Journal of Optimization》 2019年第1期1-14,共14页
The spectral analysis of simulated N-team of interacting decision makers with bounded rationality constraints of Oladejo, which assumes triangular probability density function of command inputs is hereby restructured ... The spectral analysis of simulated N-team of interacting decision makers with bounded rationality constraints of Oladejo, which assumes triangular probability density function of command inputs is hereby restructured and analysed, to have hierarchical command inputs that are predicated on order statistics distributions. The results give optimal distributions. 展开更多
关键词 Decision MAKER command and Control Bounded RATIONALITY Constraints HIERARCHICAL CONDITIONAL Probability Density Function Situation Report Computational Intelligence and Information Management
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换热器管外水垢双向循环流态化周期清洗
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作者 刘桂英 彭德其 +2 位作者 俞天兰 俞秀民 刘桂英 《冶金能源》 北大核心 2005年第4期39-41,50,共4页
提出了分区切换送气,双向交替内循环流动的三相流态化立式传热设备壳程在线清洗方法,并且用有机玻璃建造了由40根32×3×2000传热管组成的大型立式试验台。采用色水法对其不同深度的截面速度场进行试验观测,结果表明:一根布气... 提出了分区切换送气,双向交替内循环流动的三相流态化立式传热设备壳程在线清洗方法,并且用有机玻璃建造了由40根32×3×2000传热管组成的大型立式试验台。采用色水法对其不同深度的截面速度场进行试验观测,结果表明:一根布气管可以带动每侧的两排传热管区域的流态化清洗;清洗气体的消耗量设计算式为23.8(D2Nd2);清洗气体的压力为壳程液体静压的1.10倍。这种清洗技术不仅结构简单,设备费用几乎不增加,操作方便,清洗费用低廉,而且污垢清洗均匀性好,速度快,无污染。 展开更多
关键词 便
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Studies on permissible levels of breathing resistance for aircraft oxygen equipment(Review)
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作者 马瑞山 《Journal of Medical Colleges of PLA(China)》 CAS 1994年第2期123-126,共4页
We have formulated 3 permissible levels of respiratory resistance for aircraft oxygen equipment in China based on a comprehensive analysis of the results of human pkysiological experiments and feasibility of technolog... We have formulated 3 permissible levels of respiratory resistance for aircraft oxygen equipment in China based on a comprehensive analysis of the results of human pkysiological experiments and feasibility of technological design and performance with reference to existing standards and data. The ideal level can be used as a basic human physiological criterion. The applied permissible level is a criterion that must be followed in the process of design and production. The permissible level during maximum flow rate is presented as an extended allowable criterion for possible exceeding of the stable level for a short time. 展开更多
关键词 AIRCRAFT OXYGEN equipment added RESPIRATORY RESISTANCE RESISTANCE permissible level mask cavity pressure RESPIRATORY flow rate threshold for RESPIRATORY RESISTANCE SENSATION physical load
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大功率超声功率计的研制及高强度聚焦超声肿瘤治疗头功率检测 被引量:4
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作者 霍彦明 齐红 +1 位作者 宋文章 王智彪 《声学学报》 EI CSCD 北大核心 2005年第2期158-162,共5页
研制一种将机械天平、辐射压力法和智能控制结合在一起的大功率超声功率计,该功率计可以安装不同种类的反射靶面或吸收靶面对多种超声换能器进行功率测量;用砝码对该功率计进行校准和误差分析,结果显示该功率计具有稳定性好、精度高、... 研制一种将机械天平、辐射压力法和智能控制结合在一起的大功率超声功率计,该功率计可以安装不同种类的反射靶面或吸收靶面对多种超声换能器进行功率测量;用砝码对该功率计进行校准和误差分析,结果显示该功率计具有稳定性好、精度高、测量范围大的特点。用锥面反射靶和吸收靶对高强度聚焦超声肿瘤治疗头的输出功率进行测量,实验结果表明:一方面该功率计可以满足大功率、高精度测量要求,另一方面被测量的临床治疗用高强度聚焦超声肿瘤治疗头的驱动电压在600-2200 V之间,其功率输出稳定、可靠,在此范围之外功率输出误差变大,超过5%。 展开更多
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基于专家系统的电力设备温升故障诊断研究 被引量:1
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作者 刘源 金立军 +1 位作者 张建文 郑元兵 《机电一体化》 2010年第9期27-31,共5页
温升变化是反映电气设备工况的重要指标,对电气设备进行温升监测有助于及时发现并排除故障隐患,是智能电网建设的重要任务之一。文章设计了基于遮光式光强度调制的光纤温度传感器,提出了传感器双金属片结构,规划了高压开关柜中传感器安... 温升变化是反映电气设备工况的重要指标,对电气设备进行温升监测有助于及时发现并排除故障隐患,是智能电网建设的重要任务之一。文章设计了基于遮光式光强度调制的光纤温度传感器,提出了传感器双金属片结构,规划了高压开关柜中传感器安装铺设方案和系统测温光路,进行了传感器的精度分析和故障诊断的专家系统设计。为温升检测提供了一种新的方法。 展开更多
关键词 EXPERT system Based Temperature RISE Power equipment Diagnosis of
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A framework of force of information influence and application for C4KISR system
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作者 MAO Shaojie DIAO Lianwang +6 位作者 SUN Yu WANG Heng YI Kan XU Xin MAO Xiaobin ZHANG Kecheng SHENG Long 《Journal of Systems Engineering and Electronics》 SCIE CSCD 2024年第2期430-443,共14页
The subversive nature of information war lies not only in the information itself, but also in the circulation and application of information. It has always been a challenge to quantitatively analyze the function and e... The subversive nature of information war lies not only in the information itself, but also in the circulation and application of information. It has always been a challenge to quantitatively analyze the function and effect of information flow through command, control, communications, computer, kill, intelligence,surveillance, reconnaissance (C4KISR) system. In this work, we propose a framework of force of information influence and the methods for calculating the force of information influence between C4KISR nodes of sensing, intelligence processing,decision making and fire attack. Specifically, the basic concept of force of information influence between nodes in C4KISR system is formally proposed and its mathematical definition is provided. Then, based on the information entropy theory, the model of force of information influence between C4KISR system nodes is constructed. Finally, the simulation experiments have been performed under an air defense and attack scenario. The experimental results show that, with the proposed force of information influence framework, we can effectively evaluate the contribution of information circulation through different C4KISR system nodes to the corresponding tasks. Our framework of force of information influence can also serve as an effective tool for the design and dynamic reconfiguration of C4KISR system architecture. 展开更多
关键词 information warfare command control communications computer KILL intelligence surveillance reconnaissance(C4KISR)system information circulation force of information influence information entropy
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Random Vibration Analysis of the Electronic Equipment Cabinet 被引量:3
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作者 LIU Yanping~1 LIU Dongqing~2 1.Key Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education,North China Electric Power University,Beijing 102206 ,China 2.Beijing University of Science and Technology,Beijing 100083,China 《武汉理工大学学报》 CAS CSCD 北大核心 2006年第S2期709-713,共5页
In order to understand the vibration characteristic of system structure of electronic equipment cabinet within the particular vibration frequency,the finite element analysis software-ANSYS is used to simulate the test... In order to understand the vibration characteristic of system structure of electronic equipment cabinet within the particular vibration frequency,the finite element analysis software-ANSYS is used to simulate the tests of random vibrations of the cabinet system and obtain the isopleths graph of deformation and stress of the cabinet.It can confirm maximum of deformation and stress of the cabinet and position happened.Through more analysis of the frequency response curve,which can confirm harm- ful consequences random vibrations caused and weak link of the cabinet structure.The numerical simulation results are in good a- greement with the experimental results.It shows that this research provides an efficient method for the anti-seismic design and the dynamic optimization design. 展开更多
关键词 RANDOM vibrations test vibration CHARACTERISTIC NUMERICAL simulation FINITE ELEMENT analysis electronic equipment CABINET ANSYS software
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Practice and Exploration of Economic Benefit Evaluation of Medical Equipment in Our Hospital 被引量:1
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作者 Wei-wei Shi 《中国医疗设备》 2016年第12期1-3,16,共4页
Objective The evaluation index of medical equipment's economic benefit is based on the usage of medical equipment,the traditional data collection method is time-consuming,laborious and not entirely accurate.The us... Objective The evaluation index of medical equipment's economic benefit is based on the usage of medical equipment,the traditional data collection method is time-consuming,laborious and not entirely accurate.The usage of medical equipment is obtained by designing data query statements from the HIS system.Methods First the charging items are in correspondence with the device's name included,second fees and other relevant data are extracted from charging module in HIS.Through a rough estimate of the recovery period and an increase or decrease ratio,the economic benefit of the medical equipment can be analyzed.Results Through the method of the benefit analysis of the medical equipment,we can clearly find out the different economic benefit of the equipment,and finally analyze the reasons.Conclusion Practice has proved that,this methad,it can greatly reduce human,material resources required in data collection and improve the accuracy of the data.It can help hospital managers timely to grasp the operating costs of medical equipment and other information,and also provide scientific data for hospital managers when they purchase reasonable medical equipment. 展开更多
关键词 ECONOMIC BENEFIT analysis of medical equipment HOSPITAL information system data QUERY CHARGING items program design
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2自由度PID控制器在铝电解过程中的应用 被引量:2
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作者 李界家 周悦 李旸 《沈阳建筑大学学报(自然科学版)》 EI CAS 2005年第2期150-153,共4页
目的通过设计前馈2自由度PID控制器,解决目前铝电解定时间歇控制方式的控制精度低、实时性差等问题.方法设计了一种超调小、动态响应快、抗干扰能力强的前馈2自由度自校正PID控制器,该控制器采用前馈控制系统结构,确定干扰抑制性能最佳... 目的通过设计前馈2自由度PID控制器,解决目前铝电解定时间歇控制方式的控制精度低、实时性差等问题.方法设计了一种超调小、动态响应快、抗干扰能力强的前馈2自由度自校正PID控制器,该控制器采用前馈控制系统结构,确定干扰抑制性能最佳参数和跟踪特性最佳的前馈参数,并进行了参数优化.结果前馈2自由度PID控制器改善了系统的干扰抑制特性和跟踪特性,使系统的动态响应速度和稳态精度明显提高.结论该控制器在铝厂应用,改善了控制性能,使电解槽达到最佳的工作状态,提高了电流效率和铝的产量及质量,经济效益显著,具有较大的工业推广价值. 展开更多
关键词 2 PID 广
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多层环形钢板阻尼器的静力学研究
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作者 乔春蓉 冷江龙 《农机化研究》 北大核心 2005年第4期110-112,共3页
为了满足高温、低温、腐蚀环境特殊工况下阻尼减振的需要,对以干摩擦阻尼进行减振的阻尼器的开发一直是工程技术人员的一个主要研究方向。多层环形钢板阻尼器是借助于载荷作用下多层金属环之间的干摩擦力耗散能量,实现阻尼隔振的一种新... 为了满足高温、低温、腐蚀环境特殊工况下阻尼减振的需要,对以干摩擦阻尼进行减振的阻尼器的开发一直是工程技术人员的一个主要研究方向。多层环形钢板阻尼器是借助于载荷作用下多层金属环之间的干摩擦力耗散能量,实现阻尼隔振的一种新型阻尼器。为此,从弹性力学的角度建立静力学模型,对多层环形钢板阻尼器的弹性元件进行静力学研究。通过选取应力函数对力学模型进行求解,得出此种类型阻尼隔振元件承受载荷时的力学特性,为设计及应用该种类型阻尼器提供理论依据。 展开更多
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日光温室不同栽培茬口番茄需水量初探 被引量:13
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作者 许金香 高丽红 《中国农学通报》 CSCD 2005年第5期308-312,共5页
作物的需水量由植株蒸腾和棵间蒸发两部分构成。试验分别研究了日光温室冬春茬和秋冬茬的植株蒸腾量和棵间蒸发量,同时也研究了植株蒸腾量和棵间蒸发量与日光温室内的光、温、湿以及水面蒸发的相关性。结果表明:番茄植株蒸腾量在秋冬茬... 作物的需水量由植株蒸腾和棵间蒸发两部分构成。试验分别研究了日光温室冬春茬和秋冬茬的植株蒸腾量和棵间蒸发量,同时也研究了植株蒸腾量和棵间蒸发量与日光温室内的光、温、湿以及水面蒸发的相关性。结果表明:番茄植株蒸腾量在秋冬茬随生育进程呈逐渐减少的趋势,最大值在开花结果期为457.92ml/(d·plant)H2O,到成熟采摘时最少,为78.95ml/(d·plant)H2O;冬春茬则相反,随番茄的生长发育进程植株的蒸腾逐渐增加,在营养期最低为135.78ml/(d·plant)H2O,在果实膨大期最大为524.24ml/(d·plant)H2O。棵间蒸发在两个栽培茬口的趋势与植株蒸腾相似。经计算得到秋冬茬番茄的需水量为2098.95m3/hm2,冬春茬番茄的需水量为2789.25m3/hm2。冬春茬对植株蒸腾与棵间蒸发影响最大的分别是温度和湿度;而在秋冬茬对植株蒸腾与棵间蒸发影响最大均为光强。 展开更多
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Geophysical criterion of pre-outburst coal outsqueezing from the face space into the working 被引量:1
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作者 Alexander Shadrin Yuliya Diyuk 《International Journal of Mining Science and Technology》 SCIE EI CSCD 2019年第3期499-506,共8页
The initial process of coal and gas sudden outburst is studied in the article when under the influence of rock and gas pressure the part of a coal seam layer(a coal section)is squeezed out from the mouth of the future... The initial process of coal and gas sudden outburst is studied in the article when under the influence of rock and gas pressure the part of a coal seam layer(a coal section)is squeezed out from the mouth of the future outburst cavity in a jump-like manner into the working.Geo-mechanical criterion for a part of a coal seam layer outsqueezing in the form of the relation of active(squeezing out)and passive(preventing the outsqueezing)forces is defined in the article.Based on it,the geophysical criterion is defined by expressing basic physical parameters through geo-physical ones:the current stress is defined by spectral-acoustic method through the ratio of high frequency and low-frequency components of an acoustic signal,which is generated into a face working space by the mining equipment operating in the face;in-situ gas pressure is defined by gas analytical method by the concentration of methane in the atmosphere of the working;the strength of the most broken coal layer is defined by a strength measuring device(a device for measuring the depth of a steal cone punched into the coal by a spring mechanism).This paper studies the influence of acoustic,strength and filtrating and collecting properties of a face working space on the limit value of an obtained geophysical criterion of pre-outburst squeezing of a coal‘‘plug”out of the mouth of the future outburst cavity into the working. 展开更多
关键词 Block-like structure CRITERION of a COAL section outsqueezing Spectral-acoustic method Stress condition COAL strength property In-situ GAS pressure Aero and GAS control equipment METHANE concentration
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Possibility of “Comet-Like” Transport of Acetylcholine Receptors in Command <i>Helix</i>Neurons in Cellular Analog of Habituation
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作者 Arkady S. Pivovarov Galina B. Murzina +1 位作者 Denis A. Makhnovsky Mariya S. Tret’yakova 《World Journal of Neuroscience》 2014年第2期133-143,共11页
The presence of "comet-like" radial transport of acetylcholine receptors by actin microfilaments without the participation of myosin motors in the depression of acetylcholine-induced inward chloric current (... The presence of "comet-like" radial transport of acetylcholine receptors by actin microfilaments without the participation of myosin motors in the depression of acetylcholine-induced inward chloric current (ACh-current) in command neurons of defensive behavior of the land snail, Helix lucorum, in a cellular analog of habituation was investigated. For that purpose the effects of CK548, CK-636 (inhibitors of actin-related protein complex Arp2/3, whose activation triggers rapid actin polymerization and the formation of the "comet-like" tail on the actinic filament) and wiskostatin (an N-WASP protein inhibitor, activating Arp2/3) on the depression of ACh-current were studied. The attenuation of ACh-current depression was observed upon the addition of CK548. At the same time, CK-636 and wiskostatin irreversibly strengthened the depression of this current and suppressed its spontaneous recovery. The results of CK-548 action and its mathematical modeling allow suggesting the presence of "comet-like" transport of acetylcholine receptors, initiated by Arp2/3 protein complex in receptor endo and exocytosis in command neurons of Helix lucorum in a cellular analog of habituation. Irreversible inhibition of vital metabolic processes of the neuron by wiskostatin and CK-636, which lead to the decrease in the level of ATP, could have caused irreversible effects of these blockers on current depression. 展开更多
关键词 CK-548 CK-636 Wiskostatin Depression of Acetylcholine-Induced Inward Current command NEURONS HELIX lucorum Cellular ANALOG of HABITUATION
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环状平膜片挠曲变形数学模型及其试验验证 被引量:2
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作者 张化岚 孙宝元 《大连理工大学学报》 EI CAS CSCD 北大核心 2005年第3期366-369,共4页
为描述环状平膜片挠度与载荷的关系,在经典弹性薄板理论、卡尔曼大挠度理论和薄膜理论下为环状平膜片分别建立了3种挠度-载荷数学模型.与试验结果比较表明,小挠度下,薄膜理论曲线与试验结果相差很大,经典理论和大挠度理论曲线与试验结... 为描述环状平膜片挠度与载荷的关系,在经典弹性薄板理论、卡尔曼大挠度理论和薄膜理论下为环状平膜片分别建立了3种挠度-载荷数学模型.与试验结果比较表明,小挠度下,薄膜理论曲线与试验结果相差很大,经典理论和大挠度理论曲线与试验结果符合较好,说明膜片主要靠剪切内力平衡外载,剪切效应不能忽略;大挠度下,大挠度理论曲线最接近试验结果,最大误差为17.94%,经修正后结果令人满意,说明此时剪应力变化较小,膜片主要靠张力平衡外载. 展开更多
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