13 research outputs found
Effect of Surface Processing on The Performance of Low-cost Multi-crystalline Silicon Solar Cells
通过沉积SInX薄膜和H2退火表面处理工艺对低成本多晶硅太阳电池进行了处理,对表面处理前后的电池效率进行了对比测试,详细地研究了这两种表面处理工艺对电池的短路电流、开路电压、填充因子和转换效率的影响。实验发现,沉积了SInX薄膜的低成本多晶硅太阳电池的效率在原有基础上提高了1.8%左右;而经过H2退火后的电池效率则出现了效率衰减。与此同时,对成本相对高的太阳能级多晶硅电池也进行了H2退火,与低成本多晶硅电池相比,其效率增加明显,与低成本太阳电池呈现了相反的现象。最后分析了两种表面处理工艺对电池性能造成影响的原因。Two surface processing methods,which includes depositing SiNxthin film on the cells and annealing the cells in H2,were carried out on low-cost multi-crystalline silicon solar cells.The efficiency of the solar cells was tested before and after the surface processing.And the effects of the two surface processing methods on the short-circuit current,open-circuit voltage, fill factor and efficiency were carried out in this paper.The results show that the efficiency of the low-cost solar cells is improved by 1.8%after depositing SiNxthin film on the cells,but after H2 annealing,the efficiency is degraded.And high-cost solar-graded multi-crystalline silicon solar cells are also annealed in H2 atmosphere,but its efficiency increases,which shows different tendency compared to low-cost multi-crystalline silicon solar cells.Finally the factors resulting in different effects by the two methods are analyzed and discussed.福建省自然科学基金项目(2012J05122); 福建省教育厅B类项目(JB11147
1;3;5-三甲基苯的热解研究
替代燃料主要包括直链烷烃、支链烷烃、环烷烃及芳烃等。本文利用分子束质谱结合同步辐射单光子电离技术研究了芳烃类替代燃料1,3,5-三甲基苯在流动管反应器中的热解过程。通过扫描光电离效率谱探测到了质量数为2-202的60多种热解产物,包括大量同分异构体和自由基。通过测量不同温度下的光电离质谱获得了燃料的初始分解温度、热解产物的初始生成温度等一系列重要信息,对于1,3,5-三甲基苯分解路径的基元反应研究具有重要意义。根据实验结果和理论分析得到了1,3,5-三甲基苯主要的初始分解路径
塔里木沙漠腹地油田基地环境观测与防沙绿先导试验
塔克拉码干沙漠腹地的塔中四油田为亿吨级油田。开发沙漠油田对贯彻石油“稳定东部、发展西部”方针至关重要。项目紧紧围绕沙漠油田开发中遇到的环境问题,通过先导试验,在塔里木沙漠腹地石油基地建立防沙人工绿化带积累环境要素资料,为油田开发和地面建设提供科学依据,建设防沙人工绿化带提供示范样板。主要内容有:沙漠腹地油田基地环境要素监测研究;高抗性植物种选择试验;油田基地防沙及环境绿化防护系统研究;高矿化水灌溉新技术研究;沙地简易温棚栽培试验;新技术新材料配套应用研究。项目组在塔中沙漠腹地建立一套环境监测系统,取得风沙运动、地下水、灌溉土壤、动植物和人对环境反应的完整资料;建成绿地2.5公顷,引种固沙植物50余种;筛选出适用于沙漠环境的灌木17种、草本植物4种;培育乔灌苗木30万株;利用沙漠腹地咸水(矿化度4.5 ̄5.0克/升),培育温室和露地蔬菜20多种,至1996年6月收获鲜菜3000公斤,单产达到中国先进水平,开展太阳能淡化水、盐水灌溉、盐水固沙、保水剂、新型微肥等配套技术应用研究
On the Discourse of China in Anthropology ——A Recording of The 6th Summit Forum on Anthropology
就“人类学的中国话语”主题,学者们各抒己见,认为中国人类学要有自己对于田野材料的理论提升即“话语权”,就必须做好研究,进行系统的学科建设,以及跨学科整合。Centering on the theme of "the Discourse of China in Anthropol- ogy", scholars have voiced their own opinions and agreed that China needs to make researches and systematic discipline construction if it were to have its own theories on fieldwork, or discourse power
“心理科学与文化建设”研讨会发言纪要
各位领导,各位专家,早上好!非常高兴在元旦刚过、春年即将来临之际,我们举办一次心理科学与文化建设的论坛(或者称研讨会),请来各位专家,就这样一个非常重要的议题各抒己见。同时,我们也希望通过这样一个研讨会,将来逐渐形成一个机制或者一个平台,以便使我国心
中国毒理学会会议论文集
目的:通过慢性应激模型和药理学手段研究NR2B亚基在抑郁症发病中的作用,选择性拮抗NR2B亚基的快速抗抑郁样作用及其神经生物学机制。方法:采用大鼠慢性应激抑郁模型,通过核团微注射方法研究内侧前额叶皮层内谷氨酸能NMDA受体不同亚基功能与抑郁样行为的关系。通过微透析技术及Western blot方法来检测内侧前额叶皮层内谷氨酸水平及相关分子的变化;通过多个抑郁模型及多种行为学测试(包括强迫游泳测试, </p
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
气候变化国家评估报告(Ⅱ):气候变化的影响与适应
已经观测到的气候变化影响是显著的、多方面的。各个领域和地区都存在有利和不利影响,但以不利影响为主,未来的气候变暖将会对中国的生态系统、农业以及水资源等部门和沿海地区产生重大的不利影响。采取适应措施可以减轻气候变化的不利影响,应将适应气候变化的行动逐步纳入国民经济和社会发展的中长期规划中。由于我国科学研究的相对不足和科学认识能力的局限,目前的气候变化影响评估方法和结果还存在很大的不确定性。应当加强区域适应气候变化的案例研究、扩大研究领域、加强极端天气、气候事件影响的研究,以降低影响评估的不确定性,并提出切实可行的适应对策