Results 11 to 20 of about 3,160 (128)
Nailfold capillaroscopy and deep learning in diabetes 甲襞毛细血管镜检测与深度学习在糖尿病中的应用
Journal of Diabetes, Volume 15, Issue 2, Page 145-151, February 2023., 2023 Highlights Nailfold capillary images were obtained by performing nailfold video capillaroscopy in 120 adult patients with and without diabetes. Over 5000 photographs were analyzed using machine‐learning approaches, and these models were clearly able to distinguish people based on diabetes status.
Reema Shah +6 more
wiley +1 more source
Developmental Medicine &Child Neurology, Volume 61, Issue 3, Page E1-E35, March 2019., 2019 目的 本国际临床指南由欧洲残疾儿童学会（the European Academy of Childhood Disability，EACD）牵头制定，旨在解决发育性协调障碍（developmental coordination disorder，DCD）的定义、诊断、评估、干预以及与社会心理方面的临床应用关键问题。 方法 本指南针对五个领域的关键问题，通过文献综述和专家团队的正式讨论达成共识。为保证指南的循证基础，以“机制”、“评估”和“干预”为检索词, 对2012年更新以来提出的最新建议以及新增的“社会心理问题”和“青少年/成人”为检索词进行检索。根据牛津大学循证医学中心证据等级 (证据水平 [level of evidence, LOE]1–4) 将结果进行分类，最终转化为指南建议。并由国际 ...
Jing Hua +6 more
wiley +1 more source
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT The transformative potential of gallium nitride high electron mobility transistors (GaN HEMTs) in advancing carbon‐neutral power systems remains bottlenecked by contact resistance (Rc) at the metal–semiconductor (M‐S) interface, a critical determinant of switching losses and frequency response.
Ji‐Zhou Zhang +8 more
wiley +1 more source
New Phytologist, Volume 247, Issue 6, Page 2616-2629, September 2025.Summary Seagrasses are important contributors to environmental nutrient cycling in marine ecosystems and can improve water quality by absorbing excess nitrogen (N). However, these ecosystems are vulnerable to human‐mediated pressures, including marine heatwaves (MHWs), particularly those of longer duration. We performed an experiment simulating a 30‐d,
Alissa V. Bass +5 more
wiley +1 more source
A design of high precision and high power electroplating power source [PDF]
, 2012 针对传统电镀电源体积大、实现方式复杂以及输出纹波大的特点,提出了一种新型的dC/dC变换器,采用双闭环PWM实时控制方式,具有恒电流和恒电压两种工作方式。用该方法设计了一组9.6 kW电源模块,实验表明,电源输出纹波系数小于1%,效率达到90%。The tradition electroplating power is large and the output ripple is big.This paper provides a circuit scheme that use high ...
严泳兴, 张志, 朱维龙, 陈文芗
core
, 2009 手机产品出口到北美地区,需要做FCC认证和PTCRB认证,若手机带有蓝牙功能,还需要做蓝牙认证。FCC认证是对手机安全性能方面的认证,PTCRB认证是对手机质量性能方面的认证,蓝牙认证是蓝牙功能方面的测试以及取得蓝牙标志使用权的认证。只有通过这几方面的认证,手机产品才能被北美地区的运营商所接受。所以对于手机厂家研发人员而言,熟悉整套北美地区的手机认证要求是必要的,也是保证这些认证顺利通过的前提条件。文章通过介绍PTCRB认证、FCC认证、蓝牙认证的基本知识、认证流程以及认证测试内容 ...
狄德海
core
The study of bidirectional DC-DC converter in the DC microgrid [PDF]
, 2016 作为新能源的有效利用方式之一的直流微电网没有无功功率的损耗，不需要跟踪频率和相位，可靠性和可控性有较大程度的提高，更适合分布式能源的接入和应用。双向DC-DC变换器承担着母线与储能之间能量双向流动的重要作用。同时，它还可以作为直流微电网之间的互联元件，具有十分重要的研究价值。 本文针对全桥拓扑结构的双向DC-DC变换器展开较为深入的研究。 首先，详细分析了在移相控制方式下，双向DC-DC变换器的在降压方向和升压方向的工作原理及零电压开关（ZVS，Zerovoltageswitching）的具体过程 ...
纪承承
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Power Supply Design for the Industrial Weighing Instrument Using VFD Display [PDF]
, 2009 针对Vfd显示的工业称重仪表供电的需求,该文设计一种开关电源。该电源产生基本的多路输出,其中一路为反馈确保电压稳定,各路输出通过电路转换得到更为精确的电压,不仅为工业称重仪表的主控板、设定显示板安全和稳定地供电,而且解决了传统Vfd交流供电体积大的问题。实验结果表明,所设计开关电源性能指标高,是可靠合理、高效的电源。Aiming at power supply of the industrial weighing instrument.vacuum fluorescent display is ...
刘暾东, 江灏, 章明, 蔡建立
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Volume fracturing technology with high-energy electric detonation and engineering test of ground coalbed methane [PDF]
The efficient development of coalbed methane has become the preferred and strategic development goal of clean energy and gas disaster prevention and control, and it is urgent to innovate the theory and technology of coal reservoir transformation.
Baisheng NIE +9 more
core +1 more source
Gaoya dianqi, 2007 介绍了目前内置超高频传感器在电力变压器局部放电监测中的应用情况,分析了利用外部传感器检测局部放电产生的超高频信号的可行性,设计了一套基于超高频法的电力变压器局放测量系统。实验结果表明,超高频电磁波可以透过变压器夹缝衍射出来,为变压器局部放电检测提供了一种新途径。
王颂 +4 more
doaj