在柱甲基化法自动合成(S-[11C]甲基)-L-蛋氨酸和(S-[11C]甲基)-L-半胱氨酸

用PET trace回旋加速器通过核反应^14N(P,q)^11C生产^11CO2,经甲烷循环碘化法和”CH3I全自动合成系统制备^11CH3I,合成时间约为12min,未校正放化产率大于30％。采用(S-[^11C]甲基)-L-蛋氨酸(^11C-MET)半自动合成装置,使^11CH3I与前体L-同型半胱氨酸硫内酯盐酸盐的碱性溶液在Sep Pak Plus C18小柱上发生烷基化反应,并经Sep Pak Plus C18小柱分离,得^11C-MET注射液,烷基化反应时间约6min,放化产率大于85％,放化纯度大于99％,对映纯度约为90％。采用PET-CS-I型全自动合成模块,使^11CH3I与前体L-半胱氨酸发生在柱烷基化反应,并经柱分离后得到(S-[^11C]甲基)-L-半胱氨酸(^11C-CYS)注射液,烷基化反应时间约2min,未校正放化产率大于50％,放化纯度大于99％,对映纯度大于90％。制得的^11C-MET和^11C-CYS注射液可用于动物和人体研究。     

醇胺类水泥助磨剂性能的研究

试验选用三乙醇胺、乙二醇和三异丙醇胺作为助磨剂,将这三种物质,按三因素三水平正交设计表进行复合,评价助磨效果,寻找出最佳助磨剂组合并分析助磨机理。     

Strategies for coping with work-family conflict: The distinctive relationships of gender role ideology.

Study 1, with 266 employed parents, identified 8 coping strategies: super at home, good enough at home, delegation at home, priorities at home, super at work, good enough at work, delegation at work, and priorities at work. Study 2, with 679 employed parents, demonstrated a moderating effect of sex and gender role ideology in the relationship between coping strategy and work-family conflict. Specifically, the relationships between coping strategies (i.e., good enough at home, good enough at work, and delegation at work) and work interference with family were moderated by sex and gender role ideology. Regarding family interference with work, the relationships between coping strategies (i.e., good enough at home and good enough at work, delegation at home and delegation at work, and priorities at home) and family interference with work were moderated by sex and gender role ideology. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Schools as team-based organizations: A structure-process-outcomes approach.

The present study addressed the issue of teams in schools and the ways in which they contribute to school effectiveness. Specifically, the present research suggested an input (frequency of meetings and functional heterogeneity)-process (interaction processes of exchanging information, learning, motivating, and negotiating)-outcome (team performance and innovation) model for predicting school effectiveness. Two hundred twenty-four school teams (including team coordinators, team members, and school principals) were surveyed. The results indicated that, regarding team innovation, frequency of meetings and functional heterogeneity were positively associated with the 4 interaction processes, which in turn fostered team innovation. However, regarding team performance, the results indicated that only frequency of meetings was positively associated with the interaction process of exchanging information, which in turn enhanced team performance. The findings serve to draw important theoretical and practical conclusions as to the best ways to structure schools and to improve their interaction processes for the enhancement of team performance and team innovation. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

大港千米桥凝析气藏低密度压井液的应用

大港油田千米桥潜山碳酸岩储层地层压力系数已下降到了0.84～0.90,储层温度为165.5～167.9℃.有很强的压力敏感性和水敏性。使用的水基压井液密度均大于1g/cm~3.洗井时经常有压井液漏失,对水锁严重的千米桥潜山储层损害严重。室内实验结果表明.现场使用的压井液对渗透率小于10×10~3。μm~2。的气层存在比较严重的损害,其原因可能是压井液滤液进入低渗岩心的细小孔喉,引起水锁损害造成的;对渗透率大于10×10~3μm~2。的岩心,渗透率恢复值在95％以上。研究出了抗高温乳化剂DR-4和低密度抗高温水包油压井液体系.该压井液密度为0.84～0.90 g/cm~3,在168℃下老化48h不破乳;岩心损害后的渗透率恢复值大于87.6％;具有良好的抗地层水、凝析油污染能力,抗污染容量为1O％;闪点高达80℃,可保证施工安全。     

环载用机械滤波器的研制与设计

本文介绍一种载频为172～327kHz的环路载波机用的话路机械滤波器。文中着重阐述了这种机械滤波器的设计计算方法,同时给出了实用设计公式。     

安28断块钻井液技术研究与应用

安28断块地层承压能力低,全井压力形成低-高-低分布;地层造浆性强,生产用水中钙、镁离子含量高,钻井施工难度大,井塌、井漏、井喷、压差卡钻等工程事故隐患伴随整个钻井过程,在以往钻井过程中,经常出现钻井液切力大、触变性强,加重引起粘度和切力升高,形成加重-排放-再加重的恶性循环.安28断块钻井要求钻井液具有较强的抑制性、一定的抗盐能力,良好的流变性能,一定的防漏堵漏能力,好的润滑防卡性能,膨润土含量小于60 g/L,保证钻井液具有较低的粘度和适宜切力,以利于加重作业.通过室内试验研究,优选出适应该断块的强抑制封堵型钻井液体系,并制定出配套工程措施,该套钻井液技术在10口井中成功应用,很好地解决了该区块钻井难题;钻井液性能稳定,起下钻畅通,完井电测成功率达到了100%;钻井周期比以前钻的井缩短了37.8%;在三开钻进中出现的几次井漏,采用随钻和静止堵漏均取得了满意的效果,成功率达100%.     

DYNAMICS OF THE ZONAL ASYMMETRIC STRUCTURE OF ARCTIC OSCILLATION

The Arctic Oscillation (AO), though basically is a zonal symmetric phenomenon, also shows zonal asymmetric variation. The dynamics of this zonal variation is considered here from the point of view of the planetary propagation on the earth sphere. Based on the linear barotropic vorticity equation, the planetary wave ray path is calculated in the winter January. It shows that NAO(North Atlantic Oscillation),AO and North Pacific could be linked through the planetary wave propagation, which acts as the atmospheric bridge. The zonal symmetric and asymmetric structures both have association with these Rossby wave activities.     

SIMULATION STUDY OF IMAGING OF UNDERWATER BOTTOM TOPOGRAPHY BY SYNTHETIC APERTURE RADAR

1 .　ＩＮＴＲＯＤＵＣＴＩＯＮＳｙｎｔｈｅｔｉｃＡｐｅｒｔｕｒｅＲａｄａｒ (ＳＡＲ)ｉｓａｎｅｗｒｅ ｍｏｔｅｓｅｎｓｉｎｇｄｅｔｅｃｔｉｏｎａｐｐｒｏａｃｈｔｏｅｎｖｉｒｏｎｍｅｎｔａｎｄｒｅｓｏｕｒｃｅ .Ｉｔｐｏｓｓｅｓｓｅｓｇｏｏｄｒａｎｇｅａｎｄａｚｉｍｕｔｈｒｅｓｏ ｌｕｔｉｏｎ ,ｔｈｕｓｐｒｏｕｃｉｎｇｉｍａｇｅｓｓｉｍｉｌａｒｔｏｖｉｓｉｂｌｅｌｉｇｈｔｐｈｏｔｏｓ.Ｃｏｍｐａｒｅｄｗｉｔｈｓｕｃｈｒｅｍｏｔｅｓｅｎｓｉｎｇｉｍａｇｉｎｇｔｅｃｈｎｉｑｕｅａｓｏｐｔｉｃｓ ,ｉｎｆｒａｒ…