Results 21 to 30 of about 376,461 (122)
Journal of Healthcare Engineering, Volume 2018, Issue 1, 2018., 2018 A terminology (or coding system) is a formal set of controlled vocabulary in a specific domain. With a well‐defined terminology, each concept in the target domain is assigned with a unique code, which can be identified and processed across different medical systems in an unambiguous way.
Yinsheng Zhang +2 more
wiley +1 more source
Gongye shui chuli, 2013 研究了超声波、絮凝剂、超声波联合絮凝剂强化污泥脱水的效果。结果表明,单独采用超声波处理时,双频超声波的污泥脱水效果优于单频超声波;单独絮凝剂处理时,硫酸铝的污泥脱水效果优于硫酸铁和聚丙烯酰胺。超声波联合絮凝剂处理时,投加硫酸铝和超声波处理同时进行的污泥脱水效果最佳,正交回归优化超声时间(X2)、絮凝剂投加量(X2)、超声功率(X2)三者之间的线性关系为Y=0.864+0.13X1+0.09X2+0.01X3+0.03X1X2。
曹晨旸, 李玉瑛
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Study on Water Evaporation of Ultrasonic Vacuum Freeze Drying Yogurt(超声波强化真空冷冻干燥酸奶中水分蒸发的研究) [PDF]
Shipin kexue jishu xuebao, 2014 In this study, ultrasonic and vacuum freeze drying were combined to dry yogurt. Compared with the vacuum freeze drying, the effects of ultrasonic time, power, and pulse on water evaporation and drying time of yogurt were determined. Meanwhile, the drying
YANG Ju-fang(杨菊芳) +4 more
doaj +1 more source
, 2015 编者按：中国科学院力学研究所的高温气体动力学国家重点实验室（LHD）在国家重大科研装备研制计划的支持下，于2008年1月正式启动了 “复现高超声速飞行条件激波风洞” 项目。在姜宗林研究员的主持下，LHD的相关研究团队经过数年的努力，在2012年完成了研制任务。目前该风洞命名“JF12高超声速激波风洞”，并已正式运行。本刊将陆续介绍JF12风洞研制的背景与意义，风洞原理与关键技术的突破，以及利用它开展国家重大项目与学科前沿研究的情况 ...
中国科学院老科技工作者协会工程力学分会
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Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT In laser‐directed energy deposition (LDED) of TiC/Ti6Al4V composites, a low content of micron‐sized TiC provides a good strengthening effect on hardness and strength, but the improvement in plasticity remains a challenge. By introducing synchronous ultrasonic impact treatment (UIT) into the LDED process, an ultrasonic‐assisted LDED (UA‐LDED ...
Yuzhou Zeng +9 more
wiley +1 more source
Gongye shui chuli, 2007 为寻求有效降解钻井污水CODCr的新方法,探讨了超声波及超声波和纳米TiO2联合降解钻井污水CODCr的效果,研究了各种因素对超声波催化降解钻井污水中CODCr的影响。在纳米锐钛型TiO2的作用下,二氧化钛超声波催化降解钻井污水的CODCr效果明显优于单纯使用超声波的降解。在超声波频率20kHz,输出功率为50W,TiO2催化剂投加质量浓度为0.5～1.0g/L,pH为3.0,温度为30℃,钻井污水的CODCr初始浓度1881.04mg/L的条件下,80min超声波催化处理后的CODCr降解率< ...
李凡修, 陆晓华, 梅平
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Harnessing solar energy for self‐heating presents an effective strategy to suppress surface ice formation. In this paper, we fabricated nano‐silver‐modified multilayer graphene sheets (Ag@MGs) that integrate photothermal and superhydrophobic properties for anti‐icing applications.
Yihan Zhang +7 more
wiley +1 more source
Ultrasound in Obstetrics &Gynecology, Volume 65, Issue 5, Page 624-632, May 2025.ABSTRACT Objectives Placental insufficiency contributes to many obstetric pathologies, but there is no bedside clinical tool to evaluate placental perfusion. We have developed a method to acquire multiple three‐dimensional (3D) power Doppler (PD) ultrasound (US) volumes of placental vasculature, with infrared camera tracking of the precise spatial ...
A. Xue +5 more
wiley +1 more source
Gaoya dianqi, 2022 近年来波纹铝护套结构高压电缆中出现的缓冲层烧蚀缺陷造成巨额经济损失和不良社会影响，然而该缺陷产生及发展机理尚不明确，检测技术仍处于探索阶段。文中基于缓冲层间隙放电导致烧蚀缺陷的理论，开展高压电缆缓冲层烧蚀缺陷产生超声信号特征研究，探索超声检测技术在缓冲层烧蚀缺陷检测领域的可行性。文中首先基于高压电缆结构特征以及缓冲层多孔介质特性，建立缓冲层多孔介质波模型以及缓冲层放电产生超声波模型。随后通过数值模型得到缓冲层放电产生超声波声压等效波形以及不同层数缓冲层在不同频率下的吸声系数 ...
何维晟 +6 more
doaj
Ultrasound in Obstetrics &Gynecology, Volume 65, Issue 3, Page 303-310, March 2025.ABSTRACT Objective Globally, one in four pregnant women is classified as overweight or obese, based on their prepregnancy body mass index (BMI). Obese pregnant women are at increased risk of adverse pregnancy outcomes and long‐term cardiovascular disease that occurs earlier in life.
M. Charakida +6 more
wiley +1 more source