高阻p型硅大面积四象限探测器的研制

采用PIN结构,研制出高阻p型硅大面积四象限探测器。详细介绍了器件结构设计和制作工艺。对器件响应时间、象限串扰、暗电流和响应度等参数进行了计算与分析。实验结果表明,器件响应度达到0.45A/W（λ=1.06μm）,暗电流小于50nA（Vr=135V）,象限间串扰低于2.5%。     

Hydrocarbon source-rock potential of the Jurassic succession in eastern part of the North Western Desert,Egypt

The hydrocarbon potential is determined by the quantity and quality of organic matter encountered in the Jurassic sediments in two wells at the Northern Western Desert. It utilizes to define the zones of oil and gas using the well logging data for calculates the total organic carbon (TOC). The evaluation of source rock has been based on two steps; the first one depended on the geochemical parameters including TOC, S1, S2, Tmax, and Vitrinite reflectance (Ro %) of two wells JG-1 and JD-4. The second step was to calculate (TOC) from wireline logs. The well log types utilized in such kind of analysis are the density log, sonic log, resistivity log and gamma-ray log. The stratigraphic sequence, in the studied wells ranges in age from Paleozoic to Recent. The present work focuses on the Jurassic rocks represented by Khatatba Formation as they include the main source horizon. Based on the obtained results, Jurassic sediments called as fair to excellent source rock potential. The genetic type of organic matter can be identified through the study of pyrolysis data, which indicate that is rich in mixed oil and gas-prone kerogen except few samples reflect type I organic facies.     

船体结构疲劳评估的设计波法

目前,基于谱分析的疲劳评估直接计算法是相对较为精确的船舶结构疲劳评估方法,但此种方法的工作量巨大,给实际应用带来了许多不便．因而,疲劳评估设计波法就引起了人们的关注．为了更好的应用设计波法,文章对设计波法的基本原理进行了说明,同时提出了一种选择疲劳评估设计波的新方法,并按这种方法对一艘滚装船的典型结构进行疲劳评估,给出了各计算点的疲劳寿命．从该方法所得结果与简化方法、直接计算法所得结果的比较可知,对于外底和外壳板典型结构的疲劳寿命而言,设计波法与简化方法符合较好,而对于其余典型结构,三者的差别比较明显。     

"Socially mediated reduction of isolation distress in rat pups is blocked by naltrexone but not by Ro 15-1788": Correction to Garden and Hofer.

Reports an error in "Socially mediated reduction of isolation distress in rat pups is blocked by naltrexone but not by Ro 15-1788" by Susan E. Carden and Myron A. Hofer (Behavioral Neuroscience, 1990[Jun], Vol 104[3], 457-463). On page 462, the last paragraph of the first column was incorrect. The corrected paragraph is provided in the erratum. (The following abstract of the original article appeared in record 1990-24769-001.) The presence of a single anesthetized littermate significantly reduced the rate of ultrasonic vocalization by 10-day-old pups isolated in a novel environment. Naltrexone (1.0 mg/kg) returned the vocalization rate to the level of pups tested alone and disrupted the maintenance of body contact between the test pup and a companion. This suggests that the companion exerts comforting effects through endogenous opioid mechanisms. Although chlordiazepoxide is as effective as morphine in the quieting of isolation distress, the benzodiazepine (BDZ) antagonist Ro 15-1788 (5, 10, or 20 mg/kg) was ineffective in blocking the comfort effect and facilitated quiet contact with the companion. In isolated pups, Ro 15-1788 caused a significant, but not a dose-related, decrease in vocalization, a possible indication of the displacement of an endogenous anxiogenic ligand at the BDZ receptor complex. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

地下水内排对南水北调中线干渠水质的影响

基于MIKE 11模型的水动力模块、对流扩散模块建立南水北调中线输水干渠水质模型,充分考虑了干渠两侧地下水内排段的影响,以京石段为干渠水质模拟示范段,针对内排段水质对干渠水质的风险特征,选取氨氮作为典型污染组分,结合实际工程设计,计算在最不利工况下的内排量,并依此设定情景模拟内排段水质对干渠水质的影响。模拟结果表明,在假定的内排段污染风险达到极大的情况下(水质处于劣Ⅴ类),排入干渠的地下水对干渠水质基本不构成影响。     

川江载货汽车滚装运输贡献的评估与发展政策

介绍了川江地区的运输环境,阐述了滚装运输产生的行业背景、发展历程和现 状;提出以经济、社会、运输、节能、废气排放的指标,评价川江载货汽车滚装运输对区域经济 社会发展的贡献,建立了运费节约和能源节约指标的计算模型,并以2005年的统计数据和专 项调查数据为基础进行了实际评价。结果表明,川江载货汽车滚装运输兼具降低社会运输成 本、节能、环保与生态价值,有助于长江流域经济社会的可持续发展;分析了滚装运输发展 的机遇及面临的挑战,提出了促进滚装运输发展的政策和措施。     

Lateral Habenula 5-HT2C Receptor Function Is Altered by Acute and Chronic Nicotine Exposures

Serotonin (5-HT) is important in some nicotine actions in the CNS. Among all the 5-HT receptors (5-HTRs), the 5-HT_2CR has emerged as a promising drug target for smoking cessation. The 5-HT_2CRs within the lateral habenula (LHb) may be crucial for nicotine addiction. Here we showed that after acute nicotine tartrate (2 mg/kg, i.p.) exposure, the 5-HT_2CR agonist Ro 60-0175 (5–640 µg/kg, i.v.) increased the electrical activity of 42% of the LHb recorded neurons in vivo in rats. Conversely, after chronic nicotine treatment (6 mg/kg/day, i.p., for 14 days), Ro 60-0175 was incapable of affecting the LHb neuronal discharge. Moreover, acute nicotine exposure increased the 5-HT_2CR-immunoreactive (IR) area while decreasing the number of 5-HT_2CR-IR neurons in the LHb. On the other hand, chronic nicotine increased both the 5-HT_2CR-IR area and 5-HT_2CR-IR LHb neurons in the LHb. Western blot analysis confirmed these findings and further revealed an increase of 5-HT_2CR expression in the medial prefrontal cortex after chronic nicotine exposure not detected by the immunohistochemistry. Altogether, these data show that acute and chronic nicotine exposure differentially affect the central 5-HT_2CR function mainly in the LHb and this may be relevant in nicotine addiction and its treatment.     

页岩的储层特征以及等温吸附特征

页岩的储层特征以及吸附特征是评价页岩气是否具有开采价值的一个重要标准,为此,以某页岩气藏为例,测量其岩心的孔隙度与渗透率,并进行X射线衍射全岩分析和黏土矿物测定,以分析其储层特征。结果表明：该页岩的孔隙度主要分布在0.01%~5%,渗透率主要分布在0.000 01~10 mD,孔隙直径主要分布在4~6 nm;页岩的孔隙度与渗透率没有明显的相关关系,黏土矿物主要为绿泥石、伊利石、蒙皂石以及伊蒙混层。挑选了6块岩心进行等温吸附试验,以确定TOC以及R_o对页岩吸附能力的影响,结果表明：①页岩的气体吸附遵循Langmuir等温吸附曲线,其总解析气量与页岩的TOC成正相关,但与孔隙度没有明显的关系;②不同成熟度、不同TOC页岩的吸附特征研究表明,页岩的吸附能力与页岩的TOC和R_o密切相关,随着页岩TOC以及R_o的提高,页岩的吸附能力增加;当页岩的TOC相近时,页岩的R_o越高,吸附能力越强;当页岩的R_o相近时,页岩的TOC越高,页岩的吸附能力越强。     

反渗透系统出水硅含量的控制

介绍了武钢2#干熄焦除盐水站反渗透装置的运行情况,探讨了水中硅的存在形式和对反渗透装置的影响,并结合实际运行经验,摸索出一套控制产水硅含量的有效方法。     

南华北盆地济源凹陷古地温及热演化史恢复

ASY％Ro模拟方法综合考虑了温度和时间对有机质演化的影响，是叠合盆地最高古地温和剥蚀厚度恢复的有效方法之一。南华北盆地济源凹陷中生代烃源岩经历了多期叠合演化，不同地质时期的地温场可以通过不同构造单元的最高古地温进行恢复。通过EASY％Ro模拟计算，济源凹陷中生代地温梯度为4．29℃／100m，新生代古近纪地温梯度约为3．3℃／100m；白垩系和古近系渐新统剥蚀厚度分别约为1900和1600m。济源凹陷中生界生烃主要发生在白垩纪，古构造是油气勘探的有利对象。