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A shield of graphene helps particles destroy antibiotic-resistant bacteria and free-floating antibiotic resistance genes in wastewater treatment plants. Think of the new strategy developed at Ric...
Being the most widely used and comprehensive standard for hardware security modules, cryptographic tokens and smart cards, PKCS#11 has been the subject of academic study for years. PKCS#11 provides a ...
Can cloud seeding -- dispersing particles into the air with the aim of increasing precipitation -- increase snowfall?This winter, a team of researchers funded by the National Science Foundation (NSF) ...
在保证离心泵主要几何参数不变的前提下,使用Hermite插值方法对叶片包角为90°、120°、150°和180°的4个叶轮进行叶片绘型。数值模拟分析了不同叶片包角与离心泵性能的关系。结果表明,叶片包角因改变叶轮出口相对速度液流角而使离心泵扬程和功率特性发生变化,其效果与改变叶片出口安放角类似。叶片包角增大的同时叶轮流道内的脱流与漩涡也随之减小,流动更贴近叶片型线,但叶轮流道内的摩擦损失也随之增大,...
创意改变视野——Wrap     Wrap桌  创意       2010/3/16
德国KIESER SPATH设计工作室的两位设计师Marcel Kieser与Christof Spath今年设计了这款Wrap桌。可能第一眼看上去你还会觉得它平平常常,但随便放件什么东西在桌面上,就会立刻让这款桌子不同凡响起来——桌面下面呈凸面的镜子会把放在桌面上或是附近的东西的映象反射出来。这种实物与映象间的相互作用以及光与影的重叠与互动都会为人们打开一个全新的视角,而这一切都只源于一个非常简...
American Standards Committee X9, Financial Services, Inc., Subcommittee F, Working Group 1 (X9F1) requests a cryptographic review of the four key wrap algorithms in the draft key wrap standard, ANS X9...
Standards bodies have been addressing the key-wrap problem, a cryptographic goal that has never received a provable-security treatment. In response, we provide one, giving definitions, constructions, ...
Fufu, a traditional Cassava based fermented food product was prepared in the Laboratory and used for the study. Due to the short time storage and transportation of this particular food from one place ...
Fufu, a traditional Cassava based fermented food product was prepared in the Laboratory and used for the study. Due to the short time storage and transportation of this particular food from one place ...

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