数字地震仪采集系统中滤波器设计

滤波器是数字地震采集系统中的重要组成部分，文章简要地比较了两种数字滤波器，并给出了适合于地震采集器的滤波器的设计。     

人力资源管理信息化系统的研发与设计

作为现代企业管理的一个重要组成,人力资源管理对优化企业资源配置、降低企业管理成本、提高企业管理效率等方面具有关键作用。伴随着信息化技术的不断发展,人力资源管理信息化技术和水平也日益完善。人力资源管理信息化对于改变企业传统人力资源管理观念和方法,有效的将企业人力、财力、物力以及信息的结合,实现企业管理信息化具有积极意义。本文就是在介绍人力资源信息化管理现状基础上,对人力资源管理信息化系统含义和作用进行分析,着重探讨了人力资源管理信息化系统设计方案。     

Study by LC/ESI/MS and ESI/HR/MS of SO2 interactions in flavanols–aldehydes nucleophilic reactions

The study concerns the interactions between (+)-catechin and a representative oak wood aldehyde (5-(hydroxymethyl)furfuraldehyde for furanic aldehydes and vanillin for phenolic aldehydes) in a wine-like model solution in presence or not of SO₂. The formed condensation products were characterised by LC/MS, LC/ESI/MSⁿ, and ESI/HR/MS and we studied the effect of SO₂ on these condensation reactions.     

IGBT的驱动模块HR065

介绍了HR0 6 5的工作原理、电气特性及外围电路的配置     

Multielement trace determination in high purity advanced ceramics and high purity metals

In the field of advanced ceramics two CRMs were developed in the last few years by the Federal Institute for Materials Research and Testing, one for silicon nitride and one for silicon carbide. Besides their application by industry they are appropriate to be used for the validation of special methods used for trace determination in accordance with high purity materials. This is demonstrated, for example, on ultrapure silicon carbide which was analysed by solid sampling electrothermal atomic absorption spectrometry (SS ET AAS). BAM is also certifying primary pure reference materials used as the National Standards for inorganic analysis in Germany. The crucial point of this project is the certification of the total purity of high purity materials, each representing one element of the periodic table. A variety of different analytical methods was necessary to determine the trace contents of metallic and non-metallic impurities from almost the whole periodic table in the high purity materials. The primary CRMs of copper, iron and molybdenum are used as examples to demonstrate the modus operandi, analytical effects observed by using high resolution ICP mass spectrometry (HR ICP-MS) and the results.     

Genomic Instability and Cancer Risk Associated with Erroneous DNA Repair

Many cancers develop as a consequence of genomic instability, which induces genomic rearrangements and nucleotide mutations. Failure to correct DNA damage in DNA repair defective cells, such as in BRCA1 and BRCA2 mutated backgrounds, is directly associated with increased cancer risk. Genomic rearrangement is generally a consequence of erroneous repair of DNA double-strand breaks (DSBs), though paradoxically, many cancers develop in the absence of DNA repair defects. DNA repair systems are essential for cell survival, and in cancers deficient in one repair pathway, other pathways can become upregulated. In this review, we examine the current literature on genomic alterations in cancer cells and the association between these alterations and DNA repair pathway inactivation and upregulation.     

高功率CO2激光器高反膜红外耦合窗热形变的半解析方法的研究

为了有效地解决高功率CO2 激光器高反膜红外耦合窗吸收谐振腔内激光能量产生热效应问题 ,通过对红外耦合窗镀膜参数和工作特性分析 ,建立了红外耦合窗热模型。基于热传导方程和边界条件 ,利用半解析热分析方法得出当CO2 激光器具有理想的TEMoo模式输出时红外耦合窗的温度场和热形变的计算表达式 ,同时对影响红外耦合窗温度场分布的各种因素进行了讨论。研究结果与以往将谐振腔内振荡激光做均匀光强处理作了对比 ,不仅热模型更符合激光器系统 ,而且计算出温度场分布也更加准确。研究方法和结论还可以应用到其它具有轴对称性激光束模式产生的温度场、热形变分析工作中     

The Finely Coordinated Action of SSB and NurA/HerA Complex Strictly Regulates the DNA End Resection Process in Saccharolobus solfataricus

Generation of the 3′ overhang is a critical step during homologous recombination (HR) and replication fork rescue processes. This event is usually performed by a series of DNA nucleases and/or helicases. The nuclease NurA and the ATPase HerA, together with the highly conserved MRE11/RAD50 proteins, play an important role in generating 3′ single-stranded DNA during archaeal HR. Little is known, however, about HerA-NurA function and activation of this fundamental and complicated DNA repair process. Herein, we analyze the functional relationship among NurA, HerA and the single-strand binding protein SSB from Saccharolubus solfataricus. We demonstrate that SSB clearly inhibits NurA endonuclease activity and its exonuclease activities also when in combination with HerA. Moreover, we show that SSB binding to DNA is greatly stimulated by the presence of either NurA or NurA/HerA. In addition, if on the one hand NurA binding is not influenced, on the other hand, HerA binding is reduced when SSB is present in the reaction. In accordance with what has been observed, we have shown that HerA helicase activity is not stimulated by SSB. These data suggest that, in archaea, the DNA end resection process is governed by the strictly combined action of NurA, HerA and SSB.     

国有企业人力资源管理现状浅析及对策探讨

20世纪90年代以来,特别是我国加入WTO之后,一场世界范围的人才争夺战愈演愈烈。我国国有企业的人力资源管理由于历史原因存在着诸多问题,相当程度上束缚了企业的发展。国有企业必须真正树立以人为本的人力资源管理理念,切实做好人力资源规划,建立有效的企业激励机制,提高人力资源整体素质,为企业的长远发展提供人才支持。     

Virtual reality for the psychophysiological assessment of phobic fear: Responses during virtual tunnel driving.

An overall assessment of phobic fear requires not only a verbal self-report of fear but also an assessment of behavioral and physiological responses. Virtual reality can be used to simulate realistic (phobic) situations and therefore should be useful for inducing emotions in a controlled, standardized way. Verbal and physiological fear reactions were examined in 15 highly tunnel-fearful and 15 matched control participants in 3 virtual driving scenarios: an open environment, a partially open tunnel (gallery), and a closed tunnel. Highly tunnel-fearful participants were characterized by elevated fear responses specifically during tunnel drives as reflected in verbal fear ratings, heart rate reactions, and startle responses. Heart rate and fear ratings differentiated highly tunnel-fearful from control participants with an accuracy of 88% and 93%, respectively. Results indicate that virtual environments are valuable tools for the assessment of fear reactions and should be used in future experimental research. (PsycINFO Database Record (c) 2010 APA, all rights reserved)