Results 21 to 30 of about 67,090 (169)
High‐Brightness Delayed Imaging Realized by Embedding Zinc Gallate Nanocrystals Into Glass
Rare Metals, EarlyView.ABSTRACT X‐ray delayed imaging technology leverages an “irradiation‐storage‐thermally stimulated readout” mode, demonstrating unique advantages in intermittent monitoring scenarios such as high‐temperature/high‐radiation environments. This typically requires materials combining abundant carrier‐trapping energy levels with structural thermostability ...
Jun‐Xiao Wu +6 more
wiley +1 more source
Research on the RGB-D Based Fall Detection [PDF]
, 2015 随着人口的增长，越来越多的国家在面临人口老龄化的问题，同时空巢老人和独居老人所占人口比例也逐渐增多，导致家中无人监护的跌倒行为越来越多。一个鲁棒的自动化跌倒检测系统可以协助独居老人更好的独自生活，在发生危险的时候，可以及时发出警报，避免老人错过最佳抢救和治疗时间。 在跌倒检测中，人体检测和动作识别是密不可分的两个阶段。由于跌倒动作发生时间短，一些常用的动作识别特征无法准确检测出目标动作，需要重新设计适合于跌倒检测的行为特征描述子。本文针对于当前跌倒检测中的特征设计和分类器设计展开研究 ...
王力玄
core
Rare Metals, EarlyView.ABSTRACT Multi‐element Prussian blue analog (PBA) nanocomposites have attracted wide attention for their superior characteristics to single‐functional nanomaterials in extensive applications of diagnosis and therapy. In this study, a novel hollow nanocomposite was designed and fabricated by embedding S2− and Ag nanoparticles into a NiCuMnFe (PBA).
Tao Ji +7 more
wiley +1 more source
, 2015 采用分子印迹固相萃取,实现对海水中莠去津的高效分离富集,消除海水基体效应,以低检出限分子印迹聚合物膜离子选择性电极为传感器敏感元件,实现对莠去津的高灵敏电位检测,结合在线过滤等流动分析自动化处理 技术提高传感器体系分析效率,开发出了一类能够在线快速检测海水中莠去津浓度的新型电位型传感器系统。所开发的检测系统对莠去津检测的线性范围在5×10-10 ~4×10-9 mol L-1 ,检出限可达9×10-11 mol L-1 ...
梁荣宁 高奇 尹坦姬 秦伟 +1 more
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UVA Assisted 4-Thiothymidine for Cancer Treatment [PDF]
, 2016 This article reviews the developments of 4-thiothymidine analogues, assisted with UVA light, as a novel cancer therapy. First, the key points on synthetic chemistry, photochemistry and cellular toxicity of 4-thiothymidine are summarized.
Feng, Luo +3 more
core +1 more source
Rare Metals, EarlyView.ABSTRACT Narrowband near‐infrared (NIR) phosphor‐converted light‐emitting diodes (pc‐LEDs) featuring low full‐width at half maximum (FWHM) and high conversion efficiency are crucial for chemical content evaluation, light therapy, and bioimaging.
Chunshen Li +4 more
wiley +1 more source
Zhongguo youzhi旨在为神经酸的获取及相关研究提供参考，以云南特色木本植物油辣木籽油为底物，从4种产油菌株中筛选出产神经酸较高的菌种，通过单因素实验和响应面实验对优选菌种的发酵条件进行了优化，并采用气相色谱-质谱（GC-MS）测定了添加与不添加辣木籽油乳液（辣木籽油、水、吐温80体积比2∶ 2∶ 1）发酵获得的优选菌种冻干粉中脂肪酸组成及含量。结果表明：圆红冬孢酵母（GDMCC 2226）为产神经酸最优菌种；圆红冬孢酵母（GDMCC 2.226）最佳发酵条件为辣木籽油添加量7%(以乳液形式添加)、菌液添加量10 ...
宋贤娟1，孙爱娣1，张瑞2，周佩蓉1，黄艾祥1，王雪峰1,2 SONG Xianjuan1, SUN Aidi1, ZHANG Rui2, ZHOU Peirong1, HUANG Aixiang1, WANG Xuefeng1,2
doaj +1 more source
The Application of Recombinant Bacteriophages in Pathogenic Bacteria Detection [PDF]
, 2015 致病菌的快速、灵敏、特异性检测对食品质量监管、公共安全、环境卫生监测、细菌致病机理研究、疾病的诊断与治疗等具有重要意义。依靠各种生化反应的传统致病菌检测方法不仅操作复杂、检测周期长，且无法用于检测难培养的致病菌；而以抗原—抗体识别为基础的检测方法需要使用价格昂贵并难以获取的特异性抗体，限制了该方法的适用性。噬菌体是一类以细菌为宿主的病毒，广泛存在于自然界中，种类繁多，能够快速繁殖，对宿主菌具有良好的专一识别性。噬菌体基因组简单且易于改造，目前 ...
栾天
core
Inulin Molecular Detection Methods of High-Performance Gel FiltrationChromatography and Changes in Inulin Molecular Weight During Storage [PDF]
, 2016 菊芋是一种耐盐抗旱植物,可用于生产菊糖.菊糖具有良好的生物活性,其活性受到聚合度的影响.本研究对比了各项条件,总结得到了一套可以用于测定菊糖相对分子量的高效凝胶过滤色谱(HPGFC)方法:纯水为流动相,0.8 m L/min洗脱,Shodex OHpak SB-804HQ色谱柱检测,柱温控制在30℃,样品进样量为每次20μL,检测器为示差折光检测器(RID),采用Sigma公司生产的右旋糖酐标准品,绘制二次方的标准曲线,检测菊糖的相对分子质量.同时利用确定的凝胶过滤色谱(GFC)方法 ...
李琬聪 +4 more
core +1 more source
Wildlife Letters, EarlyView.The Amur tiger, an endangered flagship species mainly found in the Russia Far East and Northeastern China, holds immense biological importance, and has been listed under the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES).
Wei Xie +15 more
wiley +1 more source