热泵技术的应用现状及其发展

本文介绍了热泵的工作原理和热泵热源的选择分析，对热泵技术进行了综合评价，并根据热泵技术的应用现状提出了其发展的方向。     

高温高压气井测试合理工作制度设计理论与方法

分析传统的高温高压气井测试工作制度设计理论的不足 ,对高温高压气井测试期间地层、井筒与地面参数特征进行研究 ;分析高温高压气井测试期间井口油压与井底生产压差的关系 ,认为根据合理生产压差设计测试工作制度 ,既可以有效求取地层参数 ,又可以防止生产压差过大而使地层变形、破坏或出砂。研究成果为高温高压气井测试工作制度设计提供理论与方法     

Patricia Shoer Goldman-Rakic (1937-2003).

Presents the obitiuary for Patricia Shoer Goldman-Rakic (1937-2003), recognized not only for her contributions to neuroscience but also for her humanity. The one scientific accomplishment for Dr. Goldman- Rakic is universally recognized is her contribution to the understanding of the role of the prefrontal cortex in working memory, and because of her numerous and outstanding accomplishments, she received many honors in her career. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

压电泵增频流量骤减现象的解释

压电泵属于容积的泵，理论上可通过提高工作频率增加泵单位时间出流量；而实际上随着频率增加，被动阀压电泵的流量有一个峰值，然后骤然下降，该现象的存在制约着压电泵的推广应用，有必要给出合理的解释。通过理论分析和实验测试得出：激励频率增加，压电振子振幅减小，只是导致该现象诱因，其根本原因是振子变形量减小。引起泵腔内外压力差降低，从而使阀片开度变小甚至不能开启。与此同时，频率提高，被动阀片振动的滞后性使得阀片截止性处于失效或半失效状态。泵的一个工作周期内泄漏量增加。设计了阀振动滞后性测试装置，以整体开启阀压电泵为模型作了测试。     

无跑粗复频振网筛在磨料行业中的应用

提出了一种新的无跑粗复频振网筛,主要介绍了它的结构、工作原理及在磨料行业中的应用情况。该型筛机可广泛应用于多行业粉体物料的干、湿法筛分、分级、脱水,取得了较好的经济效益。     

并联二环尺寸链在机械加工工艺过程中的作用

在产品的机械加工工艺过程中 ,并联设计尺寸链是普遍存在的 ,分析计算工艺尺寸偏差时 ,并联关系的二环尺寸链具有决定性的重要作用。结合实例提出了求解工艺尺寸及其公差 (偏差 )的基本思路 ,供机械加工工艺人员参考     

The Relationship Between Age, Verbal Working Memory, and Language Comprehension.

A structural modeling approach was used to examine the relationships between age, verbal working memory (vWM), and 3 types of language measures: online syntactic processing, sentence comprehension, and text comprehension. The best-fit model for the online-processing measure revealed a direct effect of age on online sentence processing, but no effect mediated through vWM. The best-fit models for sentence and text comprehension included an effect of age mediated through vWM and no direct effect of age. These results indicate that the relationship among age, vWM, and comprehension differs depending on the measure of language processing and support the view that individual differences in vWM do not affect individuals' online syntactic processing. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Age-related deficits in mice performing working memory tasks in a water maze.

This study determined whether mice exhibit spatial working memory deficits with increased age. C57BL/6JNia mice of 3 different ages were tested in the Morris water maze with 2 protocols designed to assess immediate and delayed working memory abilities. Young mice required multiple trials in order to show improvements in the working memory task. Deficits in immediate working memory were detected in both 10- and 24- to 26-month-old mice. Reference memory deficits and declines in performance in the delayed working memory task were only seen in 24- to 26-month-olds. This increased susceptibility of immediate working memory processes to the aging process in mice may be related to their need for more rehearsal in the water maze than other species. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

三峡永久船闸水力学安全监测

三峡五级船闸抽水调试期和试运行期水力学监测成果的完整性和系统性较好，为工程的验收、制定船闸运行管理规程提供了科学依据，同时对今后国内外高水头船闸工程的设计和运行具有十分重要的参考价值。     

Spiders crawl easily through the bottleneck: Visual working memory for negative stimuli.

The special status of spiders in the attentional bottleneck and visual working memory (VWM) was studied. 23 spider-fearfuls (SF) and 23 non-anxious controls (NACs) participated in a serial VWM-task. Each trial showed a 4 × 4 matrix of images and 5 of these were subsequently cued for 150 ms each. Afterwards, one of the 16 displayed images was hidden and probed. The spider image was included in the string of 5 cued images, among the 11 uncued items, or not at all. For both groups, memory was better for cued spiders than for other cued items. SFs also showed improved memory for uncued spiders. The relevance of the results for theories of attention and cognitive models of phobias are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)