超长余辉蓄能发光涂料的制备

通过选用透明度高、太阳能吸收率高的丙烯酸树脂和高亮度、长余辉时间的镝和铕稀土离子共掺杂的稀土硅酸盐光致发光粉末材料aCaO·bZnO·cBaO·dMgO·nSiO2:Eu,Dy,制备出了具有较强的蓄光能力和较长发光时间的夜光涂料,并论述了其制备方法和特性。     

粉煤灰在煤矿防灭火中的应用

近几年来,随着煤矿对井下防灭火工作力度的加大,新的科研成果不断涌现。其中,粉煤灰在我国各地的煤矿防灭火工作中发挥了越来越大的作用。这里谨以兖州矿区的几项研究成果为例,说明粉煤灰在煤矿防灭火工作应用中的良好前景。1粉煤灰胶体综合防灭火系统兖州矿业(集团)公司鲍店煤     

ZrSiO4/Al2O3烧结氧化铝-莫来石复相陶瓷微观结构的研究

将氧化铝和锆英石混合物试样分别在1350℃、1550℃下烧成，结果发现在1350℃烧成、保温3h的样品中有莫来石生成，而在1550℃烧成、保温3h的情况下却未发现莫来石生成，本文对此作了分析和探讨。关键词：氧化铝一莫来石，复相陶瓷，微观结构。     

聚丙烯纤维水相异相接枝马来酸酐

本文研究了用水相异相法在聚丙烯纤维上接枝马来酸酐，用称重法测定接枝率，结果认为，随着反应中使用的马来酸酐和过硫酸铵浓度的提高，所得产物的接枝率显著提高，而反应温度和反应时间的影响则是开始随温度升高和时间延长接枝率上升，达到最大值后下降，在本实验中，各种反应条件下，都可以得到超过1．8％的接枝率。     

GPU accelerated online multi-particle beam dynamics simulator for ion linear particle accelerators

An online beam dynamics simulator is being developed for use in the operation of an ion linear particle accelerator. By employing Graphics Processing Unit (GPU) technology, the performance of the simulator has been significantly increased over that of a single CPU and is therefore viable in the demanding accelerator operations environment. Once connected to the accelerator control system, it can rapidly respond to any control set point changes and predict beam properties along an ion linear accelerator in pseudo-real time. This simulator will be a virtual beam diagnostic tool which is especially useful when direct beam measurements are not available. Details about the code structure design, physics algorithms, GPU implementations, and performance are presented.     

MA-AA聚合物陶瓷助磨剂的助磨机理研究

通过测定MA-AA对陶瓷瘠性原料(石英)以及含粘土的陶瓷塑性原料的助磨作用,以及MA-AA对陶瓷塑性原料泥浆 的粘度和ζ-电位的影响规律,并结合试样的红外光谱分析结果,研究了MA-AA对陶瓷原料的助磨机理。结果表明: MA-AA对陶瓷原料的助磨作用是由于其同时具有降低颗粒表面硬度和调节泥浆流变性两种作用。     

具有负载分享的P2P IPTV重迭网络的设计

针对在IPTV服务中当网上收视人数大规模增长时网络带宽消耗及服务器负载大大提高的问题,提出了利用P2P(Peer-to-Peer)概念中的应用层群播所形成的重迭网络来解决IPTV负载分享的问题,并通过P2P中Chord路由算法,加速构建与寻找对应的群播代理人节点。实验证明将Chord与应用层群播代理人做有效结合,可以提供用户具有服务质量、扩充性与负载分享的全方位P2P IPTV服务。     

微波辐射下一步合成2-甲氧基-3-氰基-4-芳基吡啶和2-氨基-3-氰基-4-芳基吡喃衍生物

2，5－双亚苄基环戊酮与丙二腈在氢氧化钠－甲醇或哌啶－乙醇中，经微波辐射一步合成了2－甲氧基－3－氰基－4－芳基吡啶和2－氨基－3－氰基－4－芳基吡喃衍生物，反应在3－9mi内完成，产率56％－78％。     

原位合成莫来石晶须及其微观结构的研究

本文通过以高岭土、工业氢氧化铝为原料,添加适量AlF3和V2O5,在高温下原位合成了莫来石晶须,采用扫描电镜（SEM）研究了合成的莫来石晶须的微观形貌,探讨了莫来石晶须的生长机理,并讨论了影响莫来石晶须生长的相关因素.在综合考虑影响莫来石晶须生长的相关因素后,制备出晶须多、长径比大、分布均匀的莫来石晶须样品.     

Efective Error-Tolerant Keyword Search for Secure Cloud Computing简

The existing solutions to keyword search in the cloud can be divided into two categories： searching on exact keywords and searching on error-tolerant keywords. An error-tolerant keyword search scheme permits to make searches on encrypted data with only an approximation of some keyword. The scheme is suitable to the case where users＇ searching input might not exactly match those pre-set keywords. In this paper, we first present a general framework for searching on error-tolerant keywords. Then we propose a concrete scheme, based on a fuzzy extractor, which is proved secure against an adaptive adversary under well-defined security definition. The scheme is suitable for all similarity metrics including Hamming distance, edit distance, and set difference. It does not require the user to construct or store anything in advance, other than the key used to calculate the trapdoor of keywords and the key to encrypt data documents. Thus, our scheme tremendously eases the users＇ burden. What is more, our scheme is able to transform the servers＇ searching for error-tolerant keywords on ciphertexts to the searching for exact keywords on plaintexts. The server can use any existing approaches of exact keywords search to search plaintexts on an index table.