Neuroticism and depressive symptoms among spouse caregivers: Do health behaviors mediate this relationship?

This study examined the mediating role of health behaviors in the relationship between neuroticism and depressive symptoms among spouse caregivers. Path analysis was used to test a model of the caregiver stress process among 233 caregivers of people with dementia. Results indicate that neuroticism has a significant direct effect on depressive symptoms and also indirectly influences depressive symptoms through health behaviors and perceived stress. When individual health behaviors were examined in the path model, only physical activity served a significant mediating role. These findings suggest that neuroticism may lead to depressive symptoms among caregivers partly through declines in physical activity. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

负压法(射流法)回收治理液氨尾气

论述了负压法(射流法)回收治理液氨尾气的环保安全工艺技术、原理；解决了目前一直沿用的正压法无法解决的棘手问题。     

服务器系统的安全配置

为确保服务器的安全,在安装Windows2000系统时,对硬盘分区、组件和管理应用程序及安装顺序的选择应引起足够的注意。文章对Windows2000系统的补丁和安全配置的方法也作了必要说明。     

基于双因子认证技术的网络身份识别

本文提出了一种基于动态双因子认证技术的网络身份识别方法,用户每次登录的口令是利用系统时间和用户ID通过MD5加密算法计算得到,其通过MD5加密后生成的登录口令是随机的,这将进一步提高开放网络环境下身份识别的可靠性和安全性。同时,本文还提出网络身份识别技术可以应用到各类网站的服务器上,用来完成对用户身份的识别,以提高网络系统的安全性。     

单片机破解的常用方法及应对策略

介绍了单片机内部密码破解的常用方法，重点说明了侵入型攻击／物理攻击方法的详细步骤，最后，从应用角度出发，提出了对付破解的几点建议。     

在UNIX工作站上实现SYBASE数据库的空间扩展

七号信令网管系统的数据库服务器采用惠普UNIX工作站及SYBASE数据库。由于采集的数据量增大，原先设计的数据库空间不能满足数据存储三个月的要求．因此采用一块外置硬盘对数据库空间进行扩展。详细地介绍了SYBASE数据库空间扩展的全过程。     

Evaluation of Digitally Encoded Layer‐by‐layer Coated Microparticles as Cell Carriers

To obtain more biologically relevant data there is a growing interest in the use of living cells for assaying the biological activity of unknown chemical compounds. Density ‘multiplex’ cell‐based assays, where different cell types are mixed in one well and simultaneously investigated upon exposure to a certain compound are beginning to emerge. To be able to identify the cells they should be attached to microscopic carriers that are encoded. This paper investigates how digitally encoded microparticles can be loaded with cells while keeping the digital code in the microcarriers readable. It turns out that coating the surface of the encoded microcarriers with polyelectrolytes using the layer‐by‐layer (LbL) approach provides the microcarriers with a ‘highly functional’ surface. The polyelectrolyte layer allows the growth of the cells, allows the orientation of the cell loaded microcarriers in a magnetic field, and does not hamper the reading of the code. It has further been shown that the cells growing on the polyelectrolyte layer can become transduced by adenoviral particles hosted by the polyelectrolyte layer. It is concluded that the digitally encoded microparticles are promising materials for use in biomedical and pharmaceutical in‐vitro research where cells are used as tools.     

基于PLC技术的矿井提升机电控系统安全可靠性设计

针对应用日益广泛的矿井提升机PLC技术的电控系统,采取安全可靠的技术措施,既提高了工作效率,又加强了系统的控制功能,进一步提高矿井提升机电控系统的现代化水平,实现经济效益和社会效益的良性循环。     

3G系统的安全策略分析

介绍了当前3G系统面临的各种威胁和针对3G的攻击方法,如对非授权数据的非法获取、对数据完整性的攻击和对业务的非法访问攻击等.分析了3G系统的安全体系结构和安全特性的优缺点.     

河北省水安全现状分析及对策探讨

从水资源与水环境两方面分析了河北省水安全的现状,指出影响水安全的因素在于自然因素、人为因素及人与自然的不协调因素,并针对水安全问题可能引发的健康安全、粮食安全、经济安全、生态环境安全进行了讨论,最后探讨了解决河北省水安全问题的对策。