局域网的安全策略

计算机网络的发展给我们带来了无穷的资源，但是，随之而来的安全问题也越来越重要。本文针对局域网的应用，结合笔者自己的认识，从局域网的安全需求分析着手，参考OSI网络安全技术层次模型，提出了基于局域网络的安全策略以及对策略的评估方法。     

蓝牙技术在现代化高校中的应用与实现

蓝牙技术是一种短距离无线通信技术全球规范,可实现移动通信设备、数字家电、计算机及其外设等的无线网络互联。介绍了蓝牙无线网络在高校中的应用方法及其原理,针对传统的高校网络应用的一些弊端,提出了以蓝牙核心协议栈为基础的高校无线网络使用方案。结果表明,该方法切实可行,灵活性更高,是一种适合于高校的无线互联网解决方案。     

基于防火墙的分布安全体系结构

根据OSI安全体系结构,应用各种安全机制,提出了一个基于防火墙的分布系统安全体系结构,并在此安全体系结构上,设计了一个远程端-端安全通信协议.协议采用分层机制,应用非对称公钥体制对远程通信进行验证和密钥分配,提高了网络的安全性,有利于网络的安全管理.     

Comparison of two seed oils used in cosmetics, moringa and marula

Comparison of the seed oil of Moringa pterygosperma (moringa) and Sclerocarya birrea (marula) showed a marked difference in fatty acid composition and oxidative stability. Moringa, with 1000 ppm tocopherols, had an oil stability index (OSI) of 133 h at 110 °C while marula with 1000 ppm tocopherols yielded 37 h at 110 °C. This correlated well with the fatty acid composition of these two oils. Moringa had less than 1% polyunsaturates and marula had 6.7% of these oxidatively unstable materials. In addition, fatty acid compositions of seven species of moringa are presented. All of these species had levels of behenic acid ranging from 1 to 7% with oleic acid levels from 68 to 79%. The highest amount of polyunsatures was found in the moringa species was in Moringa drouhardii with 3.6%.