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本文主要阐述喇嘛甸气顶油田在气顶暂缓开发,先开发油区情况下,采用油区注水,采油压力平衡油、气区压力,以防止油气互窜。并在气顶区、油气界面及油区建立了一套观察系统。经十几年开发实践证明,这套观察系统和方法是行之有效的。     

In situ observation of tensile deformation of high-pressure die-cast specimens of AM50 alloy

In situ observation of HPDC AM50 alloy in the SEM chamber was performed to study the changes of the micro-voids and the β phase during tensile deformation. The results suggested that micro-voids had little change in the elastic region, opened linearly with increasing load in the plastic region and led to final fracture. The detachment of β phase from the interface was also observed in the plastic region and there was no evidence to suggest that the detachment led to the final fracture.     

Children’s attention to interactions directed to others: Guatemalan mayan and european american patterns.

This study investigated differences in attention and learning among Guatemalan Mayan and European American children, ages 5–11 years, who were present but not addressed while their sibling was shown how to construct a novel toy. Each child waited with a distracter toy for her or his turn to make a different toy. Nonaddressed children from Mayan traditional families (with little maternal involvement in Western schooling; n = 40) showed more sustained attention and learning than their counterparts from Mayan families with extensive involvement in Western schooling (n = 40) or European American children (with extensive family involvement in schooling; n = 40). The nonaddressed Mayan children from highly schooled families in turn attended more than the European American children. These findings are consistent with research showing that traditional indigenous ways of organizing learning emphasize observation of ongoing interactions. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

建筑物垂直位移的监测探讨

介绍高层建筑沉降产生的原因及观测精度确定的手段,给出了沉降监测稳定标准计算方法,并结合工程实践,对作业中有关技术问题进行了讨论,可供高层建筑沉降监测参考．     

对《干盘管误解剖析》一文中4个问题的探讨

针对该文,讨论了实验中以观测法作为风机盘管干工况运行判断依据的问题;重申了基于干球温度效率法的风机盘管干工况冷量修正方法的有效性和可靠性;分析了干盘管系统对新风再热调节的需求,并提出应采用合理的新风再热调节手段以降低系统能耗;探讨了干盘管防凝结水产生的控制问题。     

沉降观测技术在高层建筑施工中的应用

在高层建筑物施工过程中应用沉降观测加强过程监控,指导合理的施工工序,预防在施工过程中出现不均匀沉降,避免因沉降原因造成建筑物主体结构的破坏或产生影响结构使用功能的裂缝,造成巨大的经济损失。     

小型蒸发器蒸发量偏大的原因

每年汛期当遇到强降水时,在小型蒸发器蒸发量的观测过程中,就常常会出现蒸发量偏大的问题,影响了气象资料的准确性。本文就对蒸发量偏大的原因进行分析并寻找解决办法。     

三峡泄洪深孔选型试验研究与工程效果

本文系统回顾了长江科学院1985-1999年期间三峡泄洪深孔选型的试验研究过程,并结合三峡工程蓄水运行以来两次水力学原型观测成果,对深孔泄洪运行效果进行了分析评估.研究表明深孔选用体型水力特性良好,过流能力满足设计要求,压力分布均匀平顺,跌坎下游能形成完整的底空腔,明槽段水流掺气可对坎后坝面形成有效保护,减压试验表明该体型空化特性良好.原型观测成果予以进一步证实,其主要水力特性指标与模型试验趋于一致,过流壁面汛后检查均未发现空蚀现象.三峡深孔的研究成果可为今后相关工程设计提供参考.     

巧选动画片培养儿童创造力——以《小熊维尼和跳跳虎》为例

在传媒业发达的当今,动画片成为儿童认识世界的一个主要渠道,有选择地收看动画片是家庭教育的一部分。学龄前后是创造力这种复合能力培养的最佳时期。本文以一部经典作品为例,帮助家长从优化多元性格、培养观察力和想象力、保持好奇心、自主寻找答案等角度出发,甄选有益身心的动画片,让儿童在快乐中开启创造潜能。     

矸石绞车转子串电阻调速技术改造

绞车原电控系统采用的是转子串电阻调速,电阻消耗大量的能量,电阻变红、变形,造成了不安全隐患,经技术改造为BPDK - ZN - 01S型变频提升机电控系统.