腺嘌呤致大鼠慢性肾功能衰竭贫血动物模型的建立

给大鼠口服含 0 .75 %腺嘌呤饲料 7周 ,造成大鼠慢性肾功能衰竭 ,并引起较严重的贫血 ,为进行重组人红细胞生成素 (rHuEPO)对慢性肾衰所致贫血的药效研究提供了稳定的实验动物模型。     

Thermodynamic calculation method for formation of rare earth inclusions in conductive copper

１－ＩｎｔｒｏｄｕｃｔｉｏｎＳｉｎｃｅｒａｒｅｅａｒｔｈｅｌｅｍｅｎｔｓｈａｖｅｓｔｒｏｎｇａｆｆｉｎｉｔｙｔｏｏｘｙｇｅｎ，ｓｕｌｐｈｕｒａｎｄｏｔｈｅｒｄｅｔｒｉｍｅｎｔａｌｅｌｅｍｅｎｔｓ，ｄｅｏｘｉｄａｔｉｏｎ，ｄｅｓｕｌｐｈｕｒｉｚａｔｉｏｎａｎｄｒｅｍｏｖａｌｏｆｄｅｔｒｉｍｅｎｔａｌｅｌｅｍｅｎｔｓｃａｎｂｅｃａｒｒｉｅｄｏｕｔｂｙａｄｄｉｔｉｏｎｏｆｒａｒｅｅａｒｔｈｅｌｅｍｅｎｔｓｔｏｌｉｑｕｉｄｃｏｐｐｅｒ，ａｃｈｉｅｖｉｎｇａｃｌｅａｎｌｉｑｕｉｄｃｏｐｐｅｒ，ｃｌｅａ…     

网络黄毒微探

网络时代的来临给人类带来巨大便利的同时,也给违法犯罪行为提供了新的机会和新的方式,网络黄毒泛滥就是其中之一.牟利或非牟利型的利用网络制作、复制、传播淫秽物品犯罪、网吧里色情网站的存在、聊天室的泛黄等等--网络黄毒不仅恶化了社会风气,更重要的是对青少年的成长极为不利.网络黄毒和其他色情问题一样引起了各国的重视,各种措施相继出台.本文对网络黄毒现状及其对策进行了初步探讨.     

加热炉热功率下降故障树建立与原因对策分析

建立相变加热炉系统故障树,着重分析相变加热炉热功率下降故障树,对热功率下降的表现、原因及对策进行了探讨.     

CpG序列及阳离子脂质体对猪带绦虫抗原基因免疫应答的影响

本实验将猪带绦虫抗原基因VTS76分别与pUC18质粒，重组pUC18-CpG质粒联合及阳离子脂质体包装后免疫小鼠，结果表明：pUC18和pUC18-CpG能显著提高免疫小鼠总IgG和特异性抗体水平，增加小鼠免疫细胞数量，增强淋巴细胞增殖活性及白细胞介素－2的诱生活性，其中，pUC18-CpG的免疫增强效果更显著，阳离子脂质体包裹具有减少质粒用量，提高免疫应答水平的作用。     

O''''-Sialon-ZrO2复合材料抗氧化性研究

用气／固相反应动力学、分形理论，探讨了Ｏ＇－Ｓｉａｌｏｎ－ＺｒＯ２复合材料的抗氧化动力学。Ｏ＇－Ｓｉａｌｏｎ－ＺｒＯ２复合材料抗氧化性能较好。氧化过程分为三个阶段，即前期为界面化学反应控速；中期为化学反应与扩散混合控速；后期为扩散控速。     

The minimal cost distribution tree problem for recursive expiration-based consistency management

The expiration-based scheme is widely used to manage the consistency of cached and replicated contents such as Web objects. In this approach, each replica is associated with an expiration time beyond which the replica has to be validated. While the expiration-based scheme has been investigated in the context of a single replica, not much work has been done on its behaviors with respect to multiple replicas. To allow for efficient consistency management, it is desirable to organize the replicas into a distribution tree where a lower level replica seeks validation with a higher level replica when its lifetime expires. This paper investigates the construction of a distribution tree for a given set of replicas with the objective of minimizing the total communication cost of consistency management. This is formulated as an optimization problem and is proven to be NP-complete. The optimal distribution tree is identified in some special cases and several heuristic algorithms are proposed for the general problem. The performance of the heuristic algorithms is experimentally evaluated against two classical graph-theoretic algorithms of tree construction: the shortest-paths tree and the minimum spanning tree.     

马来西亚槟城供水工程高压旋喷灌浆防渗墙

马来西亚槟城供水工程水库大坝为当地粘土心墙大坝，主基础处理采用综合垂直处理方案。其高压旋喷防渗墙在大坝槽混凝土防渗墙两端延长线上，。在现场试验取得大量技术参数的基础上，进行高压旋喷防渗墙的施工。墙厚０．８ｍ，也距０．８ｍ。ｒｊｇｈｔａｋ ｇｋｙａ６０ｃｍ／ｍｉｎ，自孔口或设计顶面线 基岩面以上１０ｃｍ，喷管或速度为１０ｃｍ／ｍｉｎ，通过现场对旋喷防渗墙体的开挖检查，钻孔取以及注水试验。墙体结构开头     

PZT纳米晶薄膜的Sol—Gel法制备及铁电性质

采用Ｓｏｌ－Ｇｅｌ法，以Ｚｒ的硝酸盐替代醇盐，引入ＰｂＴｉＯ３过渡层的方法成功的制备了纳米晶铁电薄膜。并进行了差热、热重、结构、组分、铁电性能的测定、分析。