Nanoparticle–Cartilage Interaction: Pathology?Based Intra?articular Drug Delivery for Osteoarthritis Therapy

Osteoarthritis is the most prevalent chronic and debilitating joint disease, resulting in huge medical and socioeconomic burdens. Intra-articular administration...     

M eta- heur ist ic 算法研究进展

对模拟退火、遗传算法和禁忌搜索法等代表性ｍｅｔａ－ｈｅｕｒｉｓｉｃ算法在理论与应用方面的研究进行综述,探讨自满结构和研究体系上的统一性,并归纳指出其发展方向。     

基于有向无环图支持向量机的水轮发电机组故障诊断模型

提高水轮机组的状态监测与故障诊断系统的准确性和及时性,对电力系统的安全运行具有重大意义。针对神经网络收敛速度慢、容易陷入局部最优解等不足,提出了一种基于有向无环图支持向量机方法的水轮发电机组故障诊断方法。该方法能有效解决小样本、高维数、非线性等问题,从而能在较短的时间内准确地诊断故障。     

铁路客车上水地面系统设施的技术探讨

为从根本上解决铁路客车上水地面系统存在水资源严重浪费的问题,立足于建立新型客车上水地面系统,从管网系统布设、上水单元布设形式、上水单元设施提升及自动控制系统的优化进行了试验研究,重点分析了客车上水系统优化运行的控制因素及确保快速上水的关键硬件设施.实践证明,该技术可为高速铁路、客运专线、动车段(所)建设以及既有铁路客车上水系统改造提供技术参考.     

High-sensitivity and wide-directivity ultrasound detection using high Q polymer microring resonators

Small size ultrahigh Q polymer microrings working at near visible wavelength have been experimentally demonstrated as ultralow noise ultrasound detectors with wide directivity at high frequencies (>20 MHz). By combining a resist reflow and a low bias continuous etching and passivation process in mold fabrication, imprinted polymer microrings with drastically improved sidewall smoothness were obtained. An ultralow noise-equivalent pressure of 21.4 Pa over 1-75 MHz range has been achieved using a fabricated detector of 60 μm diameter. The device's wide acceptance angle with high sensitivity considerably benefits ultrasound-related imaging.     

How China tackles climate change through standards

Climate change is a challenge faced by the whole humanity.As the world's largest developing country, China attaches great importance to climate change and has taken effective measures to address climate change issues despite its tremendous task to develop economy, eliminate poverty and improve people's livelihood.     

On numerical experiments for Cauchy problems of elliptic operators

Over the last decade, there has been a considerable amount of new numerical methods being developed for solving the Cauchy problems of elliptic operators. In this paper, with some new classes of numerical experiments, we re-verify the conclusions in the review article [Wei T, Hon YC, Ling L. Method of fundamental solutions with regularization techniques for Cauchy problems of elliptic operators. Eng Anal Bound Elem 2007;31(4):373–85.] concerning the effectiveness of solving Cauchy problems with the method of fundamental solutions.     

煤制乙二醇技术进展

综述了目前乙二醇生产工艺技术的现状和发展动向,指出了石油乙烯路线是目前乙二醇工业生产的主要工艺。同时,着重介绍了中国科学院福建物质结构研究所与企业合作,率先在国内外实现工业化的煤制乙二醇的成套技术。该技术符合我国缺油、少气、煤炭资源相对丰富的资源特点,可利用煤炭资源生产乙二醇,代替目前的石油乙烯路线,将有效缓解我国乙二醇产品供需矛盾,逐步实现我国以煤代油生产乙二醇的战略目标,节省大量石油资源,对国家的能源和化工产业产生重要积极影响,代表了当今煤化工领域的前沿发展方向之一。     

磁极线圈铜排钨极氩弧焊焊接工艺改进

通过对T2纯铜进行焊接性分析,对厚截面磁极线圈T2铜排的TIG焊接工艺进行合理的改进。通过改进,实现了厚截面T2铜排不需高温预热就可进行TIG焊接,并经外观检查、渗透探伤及力学性能检验,各项指标均合格,达到标准要求。