Principle Analysis of Connected-Grid Control Method for Doubly-fed Wind Power Generator and Its Simulating Experimental Research

In order to achieve the connected-grid control of doubly-fed wind power generator, thus effectively reducing the impact of the connected-grid current and protecting the whole connected-grid control system, the principles of no-load connected-grid control method are analyzed. According to the principle, a complete connected-grid control system is designed. While the simulation software PSIM is used to simulate the control strategy, Back-Back Test Bench in our company also is employed to carry out the entire connected-grid process. Simulation and test results verified the correctness and effectiveness of the control strategy

Physical health care monitoring for people with serious mental illness

Background Current guidance suggests that we should monitor the physical health of people with serious mental illness and there has been a significant financial investment over recent years to provide this. Objectives To assess the effectiveness of physical health monitoring as a means of reducing morbidity, mortality and reduction in quality of life in people with serious mental illness. Search methods We searched the Cochrane Schizophrenia Group Trials Register (October 2009) which is based on regular searches of CINAHL, EMBASE, MEDLINE and PsycINFO. Selection criteria All randomised or quasi-randomised clinical trials focusing on physical health monitoring versus standard care or comparing i) self monitoring vs monitoring by health care professional; ii) simple vs complex monitoring; iii) specific vs non-specific checks iv) once only vs regular checks or v) comparison of different guidance. Data collection and analysis The authors (GT, AC, SM) independently screened search results and identified three studies as possibly fulfilling the review's criteria. On examination, however, all three were subsequently excluded. Main results We did not identify any randomised trials which assessed the effectiveness of physical health monitoring in people with serious mental illness. Authors' conclusions There is no evidence from randomised trials to support current guidance and practice. Guidance and practice are based on expert consensus, clinical experience and good intentions rather than high quality evidenc

ETFE气枕式膜结构

随着ETFE(Ethylene Tetra Fluro Ethylene)膜材的成功研发,凭借其轻质、透光、隔热、抗腐、耐候、自洁等良好的性能而被广泛应用,大量的学者也对其开展研究。ETFE膜材为非织物类膜材,相比织物类膜材其单张膜的抗拉强度较低,常采用气枕的形式多张共同受力,并通过内压使其具有合适的刚度,由此产生的气枕式膜结构具有较好的力学性能和使用性能,逐渐得到广泛的发展并具有良好的前景。提炼出了ETFE气枕式膜结构相比于其它膜结构独有的可调节特性,在服役过程中通过内压改变对受力性能、透光率、隔热性能等的自动调节能力,并对ETFE气枕式膜结构的发展、性能、设计方法与施工技术进行研究与归纳,总结了国内外学者对ETFE气枕式膜结构的研究现状,对工程实践具有一定的指导意义

急性脑卒中患者的记忆障碍与肽类物质的关系

本实验对12例缺血性脑血管病(ICVD)患者及12例对照者和12例正常健康对照者进行了临床记忆量表检查,并测定了患者及对照者的CSF、VIP及SS含量。结果:(1) ICVD患者的记忆总分及MQ均显著低于两个对照组;分项测试中联想学习,图像自由回忆成绩亦显著降低。(2) ICVD患者CSF SS含量显著低于对照组。(3) ICVD患者CSF SS含量与MQ呈显著正相关。本结果提示ICVD患者有不同程度的记忆障碍,SS与记忆有关,测定CSF SS对患者记忆状况的判断有参考价值

一种磁电耦合异质结结构及其制备方法和应用

本发明提供一种磁电耦合异质结结构及其制备方法和应用，所述异质结结构依次包括：PMN‑PT单晶衬底、Ta缓冲层、NdFeB层以及Ta覆盖层。本发明的异质结结构是一种全新的以硬磁性合金做为铁磁层的多铁复合物异质结。由于兼具良好硬磁性和较强的逆磁电耦合效应，该异质结在磁记录、高灵敏磁电弱信号探测器、磁能积可调的微型永磁材料，传感器、逻辑器件、电控磁记录等方面都有潜在应用价值

急性脑卒中患者的记忆障碍与肽类物质的关系

本实验对12例缺血性脑血管病(ICVD)患者及12例对照者和12例正常健康对照者进行了临床记忆量表检查,并测定了患者及对照者的CSF、VIP及SS含量。结果:(1) ICVD患者的记忆总分及MQ均显著低于两个对照组;分项测试中联想学习,图像自由回忆成绩亦显著降低。(2) ICVD患者CSF SS含量显著低于对照组。(3) ICVD患者CSF SS含量与MQ呈显著正相关。本结果提示ICVD患者有不同程度的记忆障碍,SS与记忆有关,测定CSF SS对患者记忆状况的判断有参考价值

剥夺左眼和单眼学习与雏鸡脑内Jun样蛋白表达的相关性研究

近年来,大量的研究表明,外部施加的很多因素都可以诱发原癌基因c-Fos、c-Jun蛋白在神经元的表达,因此,被广泛地用作神经元活动的一个标志物。同时Fos和Jun蛋白可以转为细胞核内第三信使诱导靶基因的表达。它对神经元功能的变化特别是长时变化方面具有十分重要的作用。本实验目的是利用Jun蛋白的免疫组化技术,观察剥夺左眼和单眼学习在HV和LPO的Jun样蛋白的表达,并进行比较

剥夺左眼和单眼学习与雏鸡脑内Jun样蛋白表达的相关性研究

近年来,大量的研究表明,外部施加的很多因素都可以诱发原癌基因c-Fos、c-Jun蛋白在神经元的表达,因此,被广泛地用作神经元活动的一个标志物。同时Fos和Jun蛋白可以转为细胞核内第三信使诱导靶基因的表达。它对神经元功能的变化特别是长时变化方面具有十分重要的作用。本实验目的是利用Jun蛋白的免疫组化技术,观察剥夺左眼和单眼学习在HV和LPO的Jun样蛋白的表达,并进行比较

General physical health advice for people with serious mental illness

There is currently much focus on provision of general physical health advice to people with serious mental illness and there has been increasing pressure for services to take responsibility for providing this. For the comparison of physical healthcare advice versus standard care we identified five studies (total n = 884) of limited quality. For measures of quality of life one trial found no difference (n = 54, 1 RCT, MD Lehman scale 0.00 CI -0.67 to 0.67) but another did (n = 407, 1 RCT, MD Quality of Life Medical Outcomes Scale - mental component 3.7 CI 1.7 to 5.6). There was no difference between groups for the outcome of death (n = 407, 1 RCT, RR 1.3 CI 0.3 to 6.0), for the outcome of uptake of ill-health prevention services, one study found percentages significantly greater in the advice group (n = 363, 1 RCT, MD 36.9 CI 33.1 to 40.7). Economic data were equivocal. Attrition was large (> 30%) but similar for both groups (n = 884, 5 RCTs, RR 1.18 CI 0.97 to 1.43). Comparisons of one type of physical healthcare advice with another were grossly underpowered and equivocal