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基于USB总线的多功能车辆总线网卡设计与实现

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上海交通大学学报 2011年第8期45卷 1207-1210,1215页

作者：刘全利宋健军王伟大连理工大学控制科学与工程学院辽宁大连116023

对多功能车辆总线(MVB)网卡的结构进行分析,运用VHDL语言实现FPGA中的逻辑设计,使用USB总线实现PC机与FPGA之间的高速数据传输,从而实现PC机与MVB网卡的通信.介绍了USB接口部分的硬件电路设计、FPGA的软件设计以及上位机的软件设计.目前... 详细信息

对多功能车辆总线(MVB)网卡的结构进行分析,运用VHDL语言实现FPGA中的逻辑设计,使用USB总线实现PC机与FPGA之间的高速数据传输,从而实现PC机与MVB网卡的通信.介绍了USB接口部分的硬件电路设计、FPGA的软件设计以及上位机的软件设计.目前,本设计方案已成功应用于某地铁列车通信控制系统.

关键词：多功能车辆总线通信控制系统地铁列车

[Gly14]-humanin abolished Aβ31-35-induced neurotoxicity by activating STAT3 transcription factor pathway

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[Gly14]-humanin abolished Aβ31-35-induced neurotoxicity by ...

基于RTDS的SVG控制器硬件在环测试技术研究

中国神经科学学会第九届全国学术会议暨第五次会员代表大会

作者： Li YUAN,Xiao-Jie LIU,Zhao-jun wang,wei-Na HAN,wei YANG,Jin-Shun QI~* Department of Physiology,Shanxi Medical University,Taiyuan 030001,China

Objective Humanin(HN)is a 24-amino acid bioactive peptide abolishing neuronal cell death induced by various familial AD-related genes and amyloid-p(Aβ).[Gly]-humanin(HNG),a derivative of HN,has been reported to have much stronger neuroprotective effects than natural HN in vitro and in *** previous studies also indicated that HNG could protect against Aβ-induced impairments of hippocampal LTP and spatial learning and ***,the underlying molecular mechanisms by which HNG plays neuroprotective roles remain largely *** view of the important roles of STATs and Caspase-3 in normal cellular activities or pathological apoptosis,the present study is designed to explore the influence of HNG on the gene expression of STAT3 and Caspase-3 in the AD related animal *** SD rats were pretreated by intrahippocampal injection of Aβ31- 35,HNG,and genistein(a specific inhibitor of tyrosine kinases).The expressions of STAT3 and Caspase-3 mRNA in the hippocampus were analyzed in real-time ***(1)Compared with control,the level of Caspase-3 mRNA,in 5 nmol Aβ31-35 alone group,significantly increased,while STAT3 mRNA expression showed an obvious decrease.(2)2 nmol HNG alone injection up-regulated STAT3 mRNA and down-regulated Caspase-3 mRNA.(3)In co-injection of HNG plus Aβ31-35 group,the expression of Caspase-3 mRNA was markedly reduced and the level of STAT3 mRNA was increased compared with Aβ31-35 alone group.(4)After pretreatment with Genistein,the neuroprotective effect of HNG was significantly reduced in co-application of Genistein,HNG and Aβ31-35 group. Conclusion(1)The Aβ-induced impairments of hippocmpal synaptic plasticity and animal cognitive behavior may be involved in the activation of Caspase-3-dependent intrinsic apoptotic pathways,as well as the suppression of STAT3 mRNA expression.(2)The neuroprotective effects of HNG against Ap neurotoxicity might be mediated by activating tyrosine kinase and STAT3 transcription factor,and blocking

关键词： [Gly14]-humanin amyloid-p protein STAT3 Caspase-3 real-time RT-PCR

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电力电子技术 2017年第1期51卷 118-120页

作者：徐琳舒军甄威王静国网四川省电力公司电力科学研究院四川成都610041 中国东方电气集团有限公司四川成都611731 深圳供电局有限公司广州深圳518001

针对现有普遍采用现场试验进行静止型无功发生器(SVG)性能试验存在的效率低、工况难模拟等问题,研究了采用基于实时数字仿真器(RTDS)的SVG控制器硬件在环(HIL)测试技术建立SVG-RTDS HIL测试平台的方法,开展SVG性能测试。该平台具有仿真... 详细信息

针对现有普遍采用现场试验进行静止型无功发生器(SVG)性能试验存在的效率低、工况难模拟等问题,研究了采用基于实时数字仿真器(RTDS)的SVG控制器硬件在环(HIL)测试技术建立SVG-RTDS HIL测试平台的方法,开展SVG性能测试。该平台具有仿真结果可重复、参数易调整、工况易模拟、测试效率高等优点。试验结果表明,该平台能针对标准及规范中要求的工况开展系列性能试验,并且RTDS提供的小步长微秒级别的时间尺度,确保了测试结果满足工程测试的需求。

关键词：静止型无功发生器实时数字仿真器硬件在环

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塞锥侧板对直排塞式喷管性能的影响

推进技术 2004年第3期25卷 252-258页

作者：李军伟刘宇王长辉北京航空航天大学宇航学院北京100083

为了解塞锥侧板对直排塞式喷管性能的影响,提出了对应着同一个塞锥的不同形状和高度的侧板。采用数值模拟的方法,得到了带有不同侧板的直排塞式喷管在不同工况下的流场和性能。比较了不同侧板形状和高度对直排塞式喷管性能的影响。结果... 详细信息

为了解塞锥侧板对直排塞式喷管性能的影响,提出了对应着同一个塞锥的不同形状和高度的侧板。采用数值模拟的方法,得到了带有不同侧板的直排塞式喷管在不同工况下的流场和性能。比较了不同侧板形状和高度对直排塞式喷管性能的影响。结果表明:带有曲边侧板的塞式喷管的性能略高于带有直边侧板的塞式喷管,但不超过1%;没有侧板时塞式喷管性能要下降4%～6%;塞锥侧板的高度应不小于内喷管出口的高度,低于内喷管出口高度的侧板会降低塞式喷管性能;当侧板高于内喷管出口时,直排塞式喷管性能不随侧板高度的增加而增大。最后定性分析了带有不同侧板塞锥的流场结构,找出了产生这种结果的原因。

关键词：火箭发动机塞式喷管塞锥侧板数值仿真

Output-Feedback Robust Adaptive Control for Strict-feedback Stochastic Nonlinear Systems under Inverse Optimality Costs

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Output-Feedback Robust Adaptive Control for Strict-feedback ...

Effects of Inorganic-organic Incorporation on Productivity and Soil Fertility of Rice Cropping System in Red Soil Area of China

2010 Chinese Control and Decision Conference

作者： Jingsheng wang,jun wang,wei Liu,Ping Ji Key Lab.of Machine Vision and Intelligence Control Technology,Hefei University,Hefei,230022 P.R.China

The solvable problem of adaptive inverse optimal stabilization in probability is discussed,and control laws of global asymptotic stability in probability and adaptive inverse optimal stabilization in probability are developed for output-feedback stochastic nonlinear continuous systems with additive standard Wiener noises and constant unknown parameters by using Ito’s differentiation rule and adaptive backstepping *** adaptive control law and the parameter update laws can be obtained at same time by this design scheme.

关键词： Output-feedback Wiener noises Backstepping algorithm Inverse optimality Stability in probability

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Agricultural Sciences in China 2002年第9期1卷 1017-1022页

作者： ZHOU wei-jun, wang Kai-rong, ZHANG Guan-yuan and XIE Xiao-li(Department of Resource Environment and Agro-chemistry, Huazhong Agricultural University, Wuhan 430070 , P. R . China Changsha Institute of Agricultural Modernization , The Chinese Academy of Sciences , Changsha 410125 , P.R. China) Department of Resource Environment and Agro-chemistry Huazhong Agricultural University Wuhan 430070 P.R. China

Results from ten-year (1990 - 1999) field experiments indicated that the productivity and the soil fertility of rice cropping system were significantly influenced by the fertilization system adopted in red soil area of China. Contrasting with no-fertili/er treatment (CK), yield-increase rate of organic matter cycling, chemical NPK and inorganic-organic fertilizer incorporation treatments were 56.5% , 62.5% and 80.7% , respectively. In the case of optimum fertilization system, the largest contribution of inorganic fertilizer to the yield was 38.5% while that of inorganic-organic fertilizer incorporation was 44.7%. The content of soil organic matter changed in tendency from decrease to equilibrium with heightened the extent of N, P and K incorporation while that of inorganic-organic fertilizer incorporation could be enhanced further. After N, P and K entered into the rice cropping system and maintained organic matter cycling in the system, the pools of total N, P and K could be strengthened.

关键词： Fertilizer Organic manure Rice cropping system of red soil area of China Productivity Soil fertility

LA-ICP-MS工作参数优化及在锆石U-Pb定年分析中的应用

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岩矿测试 2017年第4期36卷 350-359页

作者：周亮亮魏均启王芳仇秀梅湖北省地质实验测试中心湖北武汉430034

将激光器(LA)和电感耦合等离子体质谱仪(ICP-MS)联用避免了溶液分析繁琐、耗时的前处理操作,减少了样品制备过程中可能带来的污染,同时又具备分析成本低、测试速度快、分析数据精度高等优势。本文将LA与ICP-MS联接使用,通过激光能量密... 详细信息

将激光器(LA)和电感耦合等离子体质谱仪(ICP-MS)联用避免了溶液分析繁琐、耗时的前处理操作,减少了样品制备过程中可能带来的污染,同时又具备分析成本低、测试速度快、分析数据精度高等优势。本文将LA与ICP-MS联接使用,通过激光能量密度和剥蚀频率组合来讨论较低的元素分馏效应,同时匹配RF功率、采样深度、载气及He气流速等主要工作参数以获得较高的元素信号灵敏度和稳定性,从而得到仪器最优工作参数组合,建立了可靠的锆石U-Pb定年方法。通过对锆石标样91500、GJ-1及Ple2ovic互测结果表明,其^(206)Pb/^(238)U加权平均年龄分别为1063.9±6.0 Ma(2σ,n=20)、600.3±2.6 Ma(2σ,n=27)及337.6±1.7 Ma(2σ,n=20),测试结果准确度和精度均在1%范围内,与前人报道的误差范围一致。使用优化后的仪器参数对来自鄂东南铜绿山矿区石英正长闪长玢岩岩体中的实际锆石样品进行测试,获得其^(206)Pb/^(238)U年龄与前人研究结果基本一致,表明本法能准确地对锆石进行定年分析。

关键词：激光剥蚀电感耦合等离子体质谱参数优化元素分馏指数信号灵敏度信号稳定性 206Pb/238U加权平均年龄

宽浅式水库库水位差异对泄水建筑物下泄流量的影响

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四川大学学报（工程科学版） 2003年第3期35卷 18-20页

作者：刘善均许唯临王韦曲景学四川大学高速水力学国家重点实验室四川成都610065

通过试验研究了宽浅式水库的泄水建筑物的泄流能力,试验表明,行近流速的影响不可忽略,不同建筑物前的水位差异相当显著,各泄水建筑物应采用相应位置的库水位来计算泄流量。

关键词：库水位宽浅式水库行近流速泄水闸溢流坝

The ratio of MMP-2 to TIMP-2 in hilar cholangiocarcinoma:a semi-quantitative study

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Hepatobiliary & Pancreatic Diseases International 2004年第4期3卷 599-602页

作者： Mei Xiao, Nin-Xing Zhou,Zhi-Qiang Huang,Ya-Li Lu, Ling-Hong Chen, Dian-jun wang and wei-Lin Chang Beijing, China Department of Hepatobiliary Surgery, General Air- force of Hospital, Beijing 100036, China and General Hospital of People’ s Liberation Army, Beijing 100853 , China Department of Hepatobiliary Surgery of General Airforce of Hospital Beijing 100036 China. fengweiairforce@***

BACKGROUND: Hilar cholangiocarcinoma is associated with low resectability and poor survival. The aim of this study was to evaluate the roles of matrix metalloproteinases- 2 (MMP-2 ) and its tissue inhibitor of metalloproteinase-2 (TIMP-2) in tumor invasion or as a prognostic factor in patients with human hilar cholangiocarcinoma. METHODS: The expressions of MMP-2 and TIMP-2 were investigated in patients. Paraffinized tissue sections ob- tained from 50 patients with human hilar cholangiocarcino- ma were analysed. The expressions of MMP-2 and TIMP-2 were examined immunohistochemically. Image analysis with image-pro plus analysis software was used to semi- quantitatively determine the ratio of MMP-2 to TIMP-2. RESULTS: The expression levels of MMP-2 and TIMP-2 were strongly associated with tumor hepatic invasion in pa- tients with hilar cholangiocarcinoma. Significant diffe- rences in the ratio of MMP-2 to TIMP-2 between some pathologic factors were observed in patients with hilar cholangiocarcinoma. CONCLUSIONS: MMP-2 plays an essential role in tumor invasion and metastasis,while TIMP-2 is shown to strongly inhibit cancer invasion and metastasis. The ratio of MMP-2 to TIMP-2 may be a prognostic indicator for patients with hilar cholangiocarcinoma.

关键词： hilar cholangiocarcinoma matrix metalloproteinase-2 tissue inhibitor of metalloproteinase-2 immunohistochemical staining tumor invasion prognostic factor