分析ARP欺骗和ICMP重定向带来的安全问题

文章详细地解释了ARP欺骗及ARP结合ICMP重定向进行高级欺骗的原理．简单探讨了应对这两个 问题的方法,并提供了一个基于Linux的检测工具．     

产品数据管理的发展趋势

在分析了产品数据管理（PDM）技术的基础上，结合PDM的发展现状和具体应用前景，提出了PDM产品的发展趋势。     

1 ,1’ -联二萘酚化合物的合成研究进展

综述了近年来 1,1’ -联二萘酚类化合物合成研究进展 ,引用文献 5 1篇     

论图书馆开展阅读推广活动的效益评价

通过对图书馆普遍开展的阅读推广活动现状的分析,阐述了效益评价对开展阅读推广活动的重要意义,探讨了开展阅读推广活动效益评价的方法。     

纳米复合永磁材料的趋近饱和定律方法研究

纳米复合永磁材料由硬磁性相和软磁性相在纳米尺度内复合而成。实验室制备材料由于矫顽力大幅度下降而不能使其既具有软磁性相的高饱和磁化强度又具有硬磁性相的高矫顽力。研究材料的矫顽力机理是提高材料性能的关键。分析了传统的趋近饱和定律对纳米复合材料的适用性及具体方法，为利用趋近饱和定律（LATS）计算复合磁性材料的有效各向异性常数，进而为研究材料的矫顽力机理提供了理论基础。     

Effects of hypoxic exercise training on microRNA expression and lipid metabolism in obese rat livers

To investigate the effects of hypoxic exercise training on microRNA （miRNA） expression and the role of miRNA expression in regulating lipid metabolism, 20 dietary-induced obese SD rats were divided into a normoxic sedentary group （N, n=10） and a hypoxic exercise training group （H, n=10）. After four weeks, measurements were taken of body weight, body length, fat mass, serum lipid concentration, miRNAs differentially expressed in rat liver, and gene and protein expression levels of perexisome proliferator activated receptor a （PPARα）, fatty acid synthetase （FAS）, and carnitine palmitoyl transferase 1A （CPTIA） in rat liver. Body weight, Lee＇s index, fat mass, fat/weight ratio, and serum levels of total cholesterol （TC） and high density lipoprotein cholesterol （HDL-C） were all significantly lower in the H group than in the N group （P〈0.01）. Six miRNAs expressed significantly differently in the liver （P〈0.05）. Specifically, expression levels of miR-378b were significantly lower in the H group than in the N group （P〈0.05）. Compared with the normoxic sedentary group, hypoxic exercise training resulted in a lower ratio of FAS mRNA to CPTIA mRNA （P〈0.05）, as well as lower CPT1A protein levels （P〈0.01）, while a higher ratio of FAS to CPT1A protein levels （P〈0.01） was observed. In conclusion, hypoxic training may elevate the resistance of high fat diet induced obesity in rats by reducing the expression of miR-378b, and decrease the fatty acid mitochondrial oxidation in obese rat livers by decreasing the protein expression of CPTIA and increasing the protein expression ratio of FAS/CPTIA.     

VE TPGS-Loaded Silk Fibroin/Hydroxybutyl Chitosan Nanofibrous Scaffolds for Skin Care Application

Vitamin E（ VE） is an ideal antioxidant and a stabilizing agent in biological membranes. In this study,silk fibroin（ SF） /hydroxybutyl chitosan（ HBC） nanofibrous scaffolds are loaded with VE tocopherol polyethylene glycol 1000 succinate（ VE TPGS） via electrospinning. SEM images show that the average nanofibrous diameter has no significant difference when the content of VE TPGS increases to 4. 0%（ SF / HBC）. However,the average nanofibrous diameter decreases largely to 200 nm when the VE TPGS content reaches 6. 0%. Furthermore,VE TPGS presents a sustained release behavior from the nanofibrous scaffolds. Cell viability studies of mouse skin fibroblasts（ L929） demonstrate that VE TPGS loaded SF / HBC nanofibrous scaffolds present good cellular compatibility.Moreover,the incorporation of VE TPGS could strengthen the ability of SF / HBC nanofibrous scaffolds on protecting the cells against oxidation stress using the Tertbutyl hydroperoxide（ t-BHP）-induced oxidative injury model. Therefore,VE TPGS-loaded SF /HBC nanofibrous scaffolds might be potential candidates for personal skin care,wound dressing and skin tissue engineering scaffolds.     

信息时代图书馆员的职业化发展

在当前信息化社会的背景下,图书馆员的职业化发展是我国图书馆员成长的必然选择,如何克服专业化发展道路上我国图书馆员职业成长的障碍,探索我国图书馆员专业化发展的具体途径,是摆在我们面前的重要课题。对图书馆员专业化、职业化发展提出了一些建议。     

对大学生进行传统文化教育的意义和策略

大学生是一个国家的未来、希望之所在,重视大学生的发展首先要重视他们的教育工作。中国传统文化历经数千年的发展,形成了一个内容丰富、精神深邃的高级文化。通过对大学生进行传统文化教育,帮助他们成长为一个有科学头脑,有独立个性,既可传承我国优秀传统文化又可开拓创新,将我国文化发扬光大的新一代公民,这将对我国的现代化事业大有裨益。     

具有修理工休假的冷备退化可修系统的研究

研究了修理工带有单重休假的两不同型部件冷储备可修退化系统.针对在实际中系统往往随时间进程寿命越来越短且修理时间越来越长的情况,假定部件相继寿命及相继修理时间均形成几何过程,修理工体假时间服从指数分布且"修复非新",利用几何过程、补充变量方法及拉普拉斯变换,得到了系统的可靠度、可用度及瞬时故障频度等可靠性指标,推广了已有文献的结果.