日粮锌硒水平对肉鸡小肠黏膜结构的影响

为了探讨微量元素锌和硒互作对肉鸡小肠黏膜结构的影响 ,将 2 4只 1日龄AA肉鸡随机分为 3组 ,分别饲喂添加有高锌高硒 (锌 1 0 0 0mg/kg ,硒 5mg/kg)、低锌低硒 (锌 34mg/kg ,硒 0 .0 8mg/kg)和常锌常硒 (锌 5 0mg/kg ,硒 0 .1 5mg/kg)的日粮 4 5d后 ,观察小肠黏膜的形态结构变化。结果表明 ,高锌高硒或低锌低硒组肉鸡的小肠黏膜结构有明显的损伤 ,表现为黏膜厚度和绒毛高度下降 ,绒毛高度 /腺窝深度的比值减少 ,肠黏膜上皮细胞萎缩。尤其是高锌高硒对空肠的损伤最为严重。而常锌常硒组肉鸡小肠黏膜的形态结构正常。研究结果表明 ,日粮中按锌 5 0mg/kg和硒 0 .1 5mg/kg的比例添加 ,对于维持小肠黏膜的正常形态结构是合适的 ;过高或过低的锌和硒对小肠黏膜有毒性作用 ,且高锌和高硒可相互促进其毒性作用     

行政诉讼与行政司法制度关系探析

本文从行政诉讼和行政司法这两种行政救济制度的比较着眼,论述了各自的功能和性质,并进一步阐明了行政司法中最重要的行政复议程序与行政诉讼间不断发展的关系;并对行政指导和行政合同这两种特殊的、非强制性的行为出现对行政诉讼和行政司法关系的促进等问题作出了阐述,提出了作者的意见和建议。     

Financial reforms and regional investment conflicts in China: A game-theoretic analysis

In the transition from a command to a market economy, macroeconomic stabilization poses a grave problem facing the reform governments. A distinct feature of China's economic fluctuations in the post-1979 period has been its “soft-constraint competition”. A two-region game theoretical model is developed in this paper. We find that monetary decentralization in the earlier stage of economic liberalization takes the inflation and fiscal deficits out of the control of the central monetary authorities. The prospective financial reforms will subject local governments' investment drives to the indirect regulations of monetary policy; but by strengthening monetary restraints, will result in massive borrowing from the domestic, or perhaps more likely, the international financial market to finance government deficits, and hence a large build-up in the stock of debts.     

Yabuli：The Making of a“Chinese Davos”

ALBERT Suen,presi-dent of the Associa-tion for the Promotionof Trade and Eco-nomic CooperationbetweenMacaoandHeilongjiang,and     

法国国防战略与军事力量

一、国防政策与军事战略 作为地区和世界大国，法国极其重视国防政策和军事战略的制定与贯彻。冷战结束后，基于对国内外形势的重新判断，法国政府逐步对国防政策和军事战略进行了修正，对法军未来担负的任务也进行了相应的调整，以维护本国在世界上的利益。     

2005年经济形势和政策走向展望

20 0 5年我国经济仍处于上升通道的合理区间。延长经济上升期既有有利方面,也有国际不利因素,以及国内的经济结构矛盾、粗放经济增长方式与体制性障碍等的制约。“双稳健”政策,加强区域政策、竞争政策的指导作用,特别是关键领域的体制改革等构成今年经济运行的主旋律。     

New Identity, New Interests and New Diplomacy

At the end of 2003, two experts on Chinese affairs from the American Rand Corporation, Evan S. Medeiros and M. Taylor Fravel published an article, "China's New Diplomacy," demonstrating changes in China's international perspective, attitude toward international society, foreign policy, and the diplomatic policy-making system and process. ① This article initiated much research, both domestic and foreign, on China's new diplomacy.     

中俄贸易的现状及前景分析

中俄两国在商品、技术、劳动力、资源、产业结构诸方面有很大的互补性,双方发展贸易能增加两国福利,使两国居民受益。目前两国的贸易发展既有巨大潜力和机遇,也存在一定的困难和问题。