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石油矿场机械 1984年第2期 12-19页

作者：田炳周华北石油管理局钻井工艺研究所

固井作业中采用尾套管悬挂器将节约巨额资金。9 5/8″×5 1/2″Ⅰ型水力式尾套管悬挂器的特点在于结构新颖、参数先进、操作方便,博得石油工程界认可。文中从结构设计到生产应用给予详尽说明和讨论。

关键词：套管悬挂器短节配合接头管子配件替泥浆尾管管类水泥头固井设备胶塞套管壁钻具球座

Influence of nitric oxide synthase and cyclooxygenase blockade on expression of cyclooxygenase and hemodynamics in rats with portal hypertension

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Hepatobiliary & Pancreatic Diseases International 2006年第4期5卷 564-569页

作者： Hui Cao, Jia Xu, Hua Liu, Fang-Bin Meng, Jiang-Feng Qiu and Zhi-Yong Wu Department of Surgery, Renji Hospital, College of Medicine, Shanghai Jiaotong University, Shanghai 200127, china Department of Surgery Renji Hospital College of Medicine Shanghai Jiaotong University Shanghai 200127 China. xujia201800@***

BACKGROUND : The importance of nitric oxide (NO) in the pathogenesis of portal hypertension (PHT) has been extensively studied, but whether or not prostacyclin (PGI2) plays a role in formation and development of hyperdynamic circutatory state in PHT has not been verified. The present study was undertaken to investigate the possible interaction between prostacyclin (PGI2) and nitric oxide (NO) in the hyperdynamic circulatory state of rats with chronic portal hypertension (PHT), by measuring the hemodynamic changes and expression of cyclooxygenase (COX) mRNA in vessels and small intestine after administration of Nω- nitro-L-arginine (L-NNA) or indomethacin (INDO) either in the short-term (7 days) or long-term (15 days). METHODS: Ninety-seven male Sprague-Dawley rats were divided into three groups: intrahepatic portal hypertension (IHPH) induced by injection of CCl4, prehepatic portal hypertension (PHPH) induced by partial stenosis of the portal vein, and sham-operated controls (SO). Animals of each group received L-NNA or INDO either for 7 or 15 days, with saline as control. Splanchnic hemodynamics was measured by the radioactive microsphere technique. The concentration of NO in serum was determined as the nitrate; nitrite ratio (NO2-/NO3-, μmol/L) by a colorometric method, and that of PGI2 was measured by specific radioimmunoassay for its stable hydrolysis product 6-keto-PGF1α (pg/ml). The reverse transcription- polymerase chain reaction measured the levels of COX-1 mRNA in the superior mesenteric artery, thoracic aorta, and small intestine of these ***: Compared with SO rats, COX-1 mRNA expression and the concentrations of plasma 6-keto- PGF1α and serum NO2-/NO3- were enhanced in both IHPH and PHPH rats; splanchnic vascular resistance (SVR) decreased, but portal venous inflow (PVI) markedly increased (P<0.05). Seven or 15 days of L-NNA treatment reduced COX-1 mRNA expression in these vessels and the small intestine, concomitant with a significant decrease i

关键词： portal hypertension hyperhemodynamics prostacyclin cyclooxygenase nitric oxide

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员工组织承诺与工作绩效关系研究

中南财经政法大学研究生学报 2009年第6期 77-82页

作者：宁赟中南财经政法大学工商管理学院

在全面回顾组织承诺与工作绩效关系的基础上,通过问卷调查方法,对武汉、广州、杭州的500名员工进行了测试,运用spss软件,对组织承诺与工作绩效关系进行相关分析以及回归分析。研究结果表明:组织承诺与工作绩效有显著地相关关系,感情承... 详细信息

在全面回顾组织承诺与工作绩效关系的基础上,通过问卷调查方法,对武汉、广州、杭州的500名员工进行了测试,运用spss软件,对组织承诺与工作绩效关系进行相关分析以及回归分析。研究结果表明:组织承诺与工作绩效有显著地相关关系,感情承诺和规范承诺与工作绩效正相关,继续承诺与工作绩效负相关。

关键词：工作绩效组织承诺员工

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长江口中华鲟保护区地方性法规立法研究

水产学报 2011年第4期35卷 620-626页

作者：陈锦辉黄硕琳刘健张葛鸣吴铠吴建辉上海海洋大学海洋科学学院上海市长江口中华鲟自然保护区管理处

《上海市长江口中华鲟自然保护区管理办法》自2005年4月15日实施以来,为科学有效保护中华鲟及其息栖环境提供了强有力的规章制度保障。由于当时时间紧,以及对中华鲟及其栖息地生态环境保护尚处于摸索阶段,在条文内容和规定上就采用宜粗... 详细信息

《上海市长江口中华鲟自然保护区管理办法》自2005年4月15日实施以来,为科学有效保护中华鲟及其息栖环境提供了强有力的规章制度保障。由于当时时间紧,以及对中华鲟及其栖息地生态环境保护尚处于摸索阶段,在条文内容和规定上就采用宜粗不宜细的原则,对于有些问题采用了一般性处理的形式。随着时空的变迁和中华鲟保护工作不断深入,现有条文内容和规定已不能满足保护区工作的实际需要。2009年,上海市长江口中华鲟自然保护区地方性法规立法已被市人大列入立法规划。在此背景下,本文分析了上海市长江口中华鲟自然保护区法制建设存在的问题和原因,阐述了上海市长江口中华鲟自然保护区立法的可行性,1)有坚实的法制基础;2)地方政府规章实施一段时问后将其上升为地方性法规,符合我国立法程序;3)出台地方性法规是解决《办法》实施中存在的问题,唯一可行的途径。最后对上海市长江口中华鲟自然保护区立法提出的相应对策与建立。首先,应确立保护区立法的四个目标;其次,应坚持两个立法原则,一是基本原则,包括可持续发展原则、预防性原则、生态优先原则、系统性保护原则;第二,地方法规立法的特有原则,包括地方性原则、创制性原则;最后,应建立六项基本制度,包括开放性管理制度、生物资源特性制度、土地权属制度、生态补偿机制、公众参与制度,以及专项救护与驯养繁殖制度。

关键词：中华鲟自然保护区长江口地方立法

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中国男篮在身体接触情况下背向进攻的特征

体育学刊 2001年第3期8卷 32-34页

作者：周威董伦红熊国庆华南师范大学体育科学学院广东广州510631 北京体育大学研究生部北京100084 华中农业大学体育部湖北武汉430070

通过对NBA总决赛、奥运会队及CBA比赛某些场次的背向进攻方式 ,脚步动作 ,投篮方法等研究 ,指出我国国家队和甲级队在比赛中有身体拉触的投篮次数占总数的比率少 ,对抗投篮得分占总得分的比率较低 ,队员主动进攻能力差等问题。

关键词：身体接触对抗背向进攻中国男篮

The essential role of dopaminergic system in the food-anticipatory activity in mice

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The essential role of dopaminergic system in the food-antici...

Some Interesting Results about Splitting

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： Yuan-Yuan LIU~1,Tian-Ya LIU~2,Zong-Yuan HONG~2,Wei-Min QU~1,Zhi-Li HUANG~(1,*) 1 Department of Pharmacology,State Key Laboratory of Medical Neurobiology,Shanghai Medical College,Institute of Brain Science,Fudan University,Shanghai 200032,china 2 Institute of Quantitative Pharmacology,Department of Pharmacology,Wannan Medical College,Wuhu 241001, china

Objective When food is available during a restricted and predictable time of the day,mammals exhibit food-anticipatory activity(FAA),a daily increase in locomotor activity preceding the presentation of *** many studies attempted to locate the food-entrainable circadian oscillator in the central nervous system,the mechanisms for FAA are a matter of *** present study was designed to clarify the role of dopaminergic and histaminergic systems in *** The mice were given access to food for 2 h(CT19-CT21) in ICR mice and for 4 h(CT 17-CT21) in gene-manipulated *** was monitored by infrared locomotor activity sensors and defined as the locomotor activity occurred 2 h before the availability of *** D,receptor(R),D2R,and histamine H,R-specific antagonists,and DR- and HR-knockout(KO) mice were used to clarify the role of dopamine and histamine receptors in FAA induced by food restriction(FR).In addition,brain monoamine concentrations on the 14 day of FR were determined by *** Pretreatment with DR antagonist SCH23390 at 1,3,or 10μg/kg significantly decreased FAA by 19%,26%or 19%,respectively,and DR antagonist raclopride at 22,67,or 200μg/kg significantly decreased FAA by 16%,36%or 41%,respectively,as compared with vehicle ***,co-administration of SCH23390 and raclopride synergistically inhibited FAA by 57%.Consistently,the levels of dopamine and its metabolites in the striatum and midbrain were significantly increased during FR-induced FAA,even in the mice pretreated with DR and DR ***,DR KO mice exhibited attenuated ***,pretreatment with pyrilamine at 2.5,5,or 10 mg/kg did not significantly decrease FAA,although it decreased the locomotor activity during the dark period in ad libitum mice,and H,R KO did not affect *** These results strongly indicate that dopaminergic system plays an essential role in the food-anticipatory activity in mice.

关键词： antagonist dopamine D1 receptor D2 receptor food restriction histamine H1 receptor food-anticipatory activity

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Some Interesting Results about Splitting

不同地区旅游者对民族村寨旅游资源偏好研究——四川丹巴甲居藏寨的实证调研

2010 Third International Conference on Education Technology and training (ETT 2010)

作者： Maonian Wu College of Science Guizhou University Guiyang Guizhou Province china

logic programming, a primary means for repre- senting and reasoning about knowledge, has been applying in many domains. For instance, representing and Managing about Information Technology ＆ Engineering and knowledge. It is complex to compute the answer set of a logic programming. In order to decrease the task of computation, researchers naturally divide a big problem into many independent small problems. One useful method is splitting technology in logic programming proposed by Lifschitz. We show in this paper some interesting algebraic properties of splitting over logic programming.

关键词： logic programming splitting algebraic property information technology & engineering.

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中南财经政法大学研究生学报 2013年第3期 89-95页

作者：张琼舒伯阳中南财经政法大学法律硕士中心中南财经政法大学工商管理学院

随着乡村旅游的迅速发展,民族村寨由于盲目开发而遭受着不可逆转的破坏。理性地、有针对性地开发民族村寨旅游是当务之急。四川丹巴甲居藏寨是民族旅游典型代表,本文运用内容分析法分析甲居藏寨游客的留言样本,总结不同地区游客对民族... 详细信息

随着乡村旅游的迅速发展,民族村寨由于盲目开发而遭受着不可逆转的破坏。理性地、有针对性地开发民族村寨旅游是当务之急。四川丹巴甲居藏寨是民族旅游典型代表,本文运用内容分析法分析甲居藏寨游客的留言样本,总结不同地区游客对民族村寨旅游资源的偏好与需求差异,以期更好地界定不同地区旅游者的需求,为旅游经营者依法合理利用资源并调整其市场营销规划提供客观依据。

关键词：民族村寨内容分析法游客偏好旅游资源