Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Abstract There are numerous processes for making metallic foams or similar highly porous metallic structures. The various processes can be classified into those starting from metallic melts, those starting from powdered metals, and those using deposition techniques. Most methods work for a specific range of metals and…
The J-integral resistance curve (or J-R curve) has been widely used as material property in fracture mechanics methods for structural integrity assessment. ASTM E1820 provides the standard fracture toughness test methods to measure JIc and J-R curves. The conventional J-R curve utilizes the J-integral parameter propos…
Ferromagnetic shape-memory alloy (FSMA) particles undergo changes in both electromagnetic properties and crystallographic structure when strained. When embedded in a structural material, these attributes can provide sensory output of the strain state of the structure. In this work, a detailed characterization of the e…
Based on the reactor dynamics code DYN3D for the simulation of transient processes in Light Water Reactors, a code version DYN3D-HTR for application to graphitemoderated, gas-cooled block-type high temperature reactors has been developed. This development comprises: - the methodical improvement of the 3D steady-state…
Analysis of evaluation methods for Nuclear Power Plant (NPP) Radioactive Waste Management System has been conducted to assess the applicability of the existing methods. The existing method are tested to the radioactive waste management systems chapter in reactor safety analysis report. This safety analysis report obta…
目的 研究卡培他滨在不同溶剂、不同温度下的核磁共振现象.方法 分别测定卡培他滨在不同极性的氘代溶剂(CDCI3、CD3OD和DMSO-d6)及不同温度(283、293、303、323、333 K)时的氢谱和碳谱.结果 卡培他滨在不同溶剂、不同温度下的NMR谱,特别是碳谱上,脱氧核苷和胞嘧啶环上的碳信号有明显差异.结论 卡培他滨在以CD3OD为溶剂,在较低温度时,其主要为单一构象结构,碳信号基本为一组信号.在此条件下测定其相应1D和2D谱,对其质子和碳信号进行了完整归属。
[Objective]To synthesise the prodrug of chitosan-dexamethasone with pH sensitive release property.[Methods]The chitosan-dexamethasone prodrug was prepared by covalently linking via hydrazone bonds,and the structure of the prodrug was verified by 1H-NMR.The nanoprodrug was prepared by dialyse method,and the size and mo…
在采用乳液微封装技术制备聚-a-甲基苯乙烯（PAMS）空心微球的双重乳液固化过程中，为研究油包水（W1/O）复合液滴与外水相（W2）之间的密度匹配度对最终PAMS空心微球球形度的影响，理论研究了不同初始外径和油层厚度的复合液滴在不同固化时刻的平均密度；实验测量了W1/O复合液滴在固化过程中的油相质量分数及复合液滴的平均密度。研究结果表明：双重液滴固化过程的关键阶段为油相质量分数从20%增加至60%的过程。在双重乳液固化的关键阶段，当复合液滴与外水相的密度不匹配度由0.004 95 g/cm3降低至0.000 02 g/cm3时，微球球形偏离度值低于10 m的PAMS微球粒子分数从14.3%提高至93.3%；调节外水相的组分来降低双…
Zr-based AB2-Laves phase type alloys containing the same type of A and B metals, have been prepared from pure elements by melting and subsequent re-melting under argon atmosphere by using a HF-induction levitation furnace. Characterization of the alloys has resulted from powder X-Ray Diffraction (XRD) measurements and…
Abstract : This is the final report dealing with the dramatic enhancement of optoelectronic efficiencies of conjugated polymers induced by segmental stresses discovered by the researcher, which was further studied in various fundamental facets of this important property in addition to some major breakthroughs in the r…
i-manager's Journal on Future Engineering and Technology, i-manager's Journal on Software Engineering, i-manager's Journal on Electrical Engineering, i-manager's Journal on Electronics Engineering, i-manager's Journal of Educational Technology, i-manager's Journal on Educational Psychology, i-manager's Journal on Scho…
i-manager's Journal on Future Engineering and Technology, i-manager's Journal on Software Engineering, i-manager's Journal on Electrical Engineering, i-manager's Journal on Electronics Engineering, i-manager's Journal of Educational Technology, i-manager's Journal on Educational Psychology, i-manager's Journal on Scho…
目前AlGaN/GaN高电子迁移率晶体管(HEMT)生物传感器表面修饰及分子识别元件固定需在金属或氧化物门电极上进行,针对金属或氧化物门电极的存在增加了器件的制作难度,提高了制作成本,同时还影响了传感器灵敏度的提高等问题,提出了进行"生物分子膜"门电极的研究。传感器的表面采用3-氨基丙基三乙氧基硅烷(APTES)进行修饰作为分子识别元件固定的基底,该方法在降低传感器的制作成本的同时,提高了传感器的灵敏度,传感区域为长度L=5μm、宽度W=160μm的传感器测量质量浓度为0.1ng/mL的山羊免疫球蛋白(IgG)时,传感器源漏间电流呈现约30μA的电流降。该传感器反应速度快,适用于实时监测,在环境监控、医疗等领域有着良好的应用前景。
Ordered mesoporous carbons (OMCs) show great potenti al for environmental improvement due to their ability to remove inorganic and org anic contaminants from li qui d and g as. OMCs are a promising adsorpti on material for treatment of hygiene and urine waste streams generated during space missions. OMCs’ preparati on…
International audience
T-pipe is one of the typical structural elements of LWR piping as well as T-joint. In the present situation, the evaluation of wall thinning for T-pipe is accomplished by assuring the sufficient strength around the opening area by using the design and construction code. This evaluation often assumes the replacement of…
The development of efficient odor removal systems for use inside lunar mission architectures is one of NASA’s critical needs. Although photocatalytic systems have been demonstrated at the laboratory scale for the removal of a variety of volatile organic compounds (VOCs), commercial systems have various limitations inc…
Reclamation of wastewater has become an important issue mainly due to the increasing demand for existing water sources. Thus, finding ways to effectively recycle wastewater, including human waste obtain water is imperative. Therefore, in this research we investigate the adsorption capacity of activated carbons and car…
Analytical solutions are acquired for radially polarized and magnetized rotating magnetoelectroelastic hollow and solid cylinders. The cylinders are orthotropic and infinitely long and are subjected to a combination of thermal, magnetic, electric, and mechanical loadings. The symmetric and steady state heat conduction…
A Code Case for procedure to determine strain rate and Fen for environmental fatigue evaluation is under preparation in the ASME BPV Committee on Construction of Nuclear Facility Components (III). The draft Code Case is to incorporate two methods for strain rate calculation. One is based on NB-3216.1 “Constant Princip…