Results 31 to 40 of about 37,131 (190)
本文针对超声波测流在渠道测流中的应用,结合理论实践,在简要阐述超声波测流原理的基础上,分析了具体的测流步骤,并提出超声波测流在渠道测量的应用路径。分析结果表明,和传统测流技术相比,超声波测流具有更强的稳定性、可靠性,可保证渠道测流的精度,值得大范围推广应用。
阿里艳 • 阿里木
semanticscholar +1 more source
Smart Biomaterials and Dressings for the Treatment of Chronic Inflammatory Skin Diseases
ABSTRACT Chronic inflammatory skin diseases, encompassing immune‐inflammatory conditions and infection‐associated dermatoses, pose significant clinical challenges due to high prevalence, recurrence, and therapeutic resistance, affect over 30% of the global population.
Zehao Lan +5 more
wiley +1 more source
The study of one-dimensional flow analysis model of the combustor in supersonic combustion experiments [PDF]
对公开发表的用于超声速燃烧流场分析的几种一维模型进行了研究,指出了其中存在的问题,研究结果表明:基于实验静压数据的一维模型,若不借助必要的流场测量数据或分析结果,或借助于经验性的处理方法,单靠一维假设,无法获得较为完整的一维流场分析结果。改进后的一维模型降低了数据处理过程中的不确定性,提高了对一般情况的适应能力。用编制的计算程序SSC-2对两组典型的超燃燃烧室壁面静压实验数据进行了演算 ...
俞刚, 张鹏
core
Orbitally Driven Anomalous Thermal Transport Under High Pressure in Gallium Nitride
ABSTRACT Extreme conditions such as high pressure offer opportunities for innovative materials design and applications. For over a century, studies on thermal transport in crystals under high hydrostatic pressure have shown that lattice thermal conductivity generally exhibits a monotonic increase with pressure.
Zong‐Hao Yuan +8 more
wiley +1 more source
The Design of distributed environment monitoring system based on PLC in the waste disposal station [PDF]
随着我国经济发展,城市化推进,生活生产垃圾总量呈逐年上涨态势,垃圾站的数量也不断攀升。同时由于人们环保意识的提高,垃圾回收过程的环境质量问题越来越为公众所注意。但是我国监测系统的发展还远不能满足当前的要求,如何进一步提高垃圾回收过程的监测水平,多元化监测手段,以及对环境污染状况做出科学的评价是当前面临的首要问题。 本文致力于一种基于PLC的垃圾站分布式环境监控系统的设计,综合运用PLC技术、传感器技术、自动检测技术、通信技术、网络技术和微型计算机技术,实时监控多个子站点的温度、湿度、有害气体 ...
沈绿楠
core
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
Research of Esophagus Disease-aided diagnosis Based on Ultrasonic Endoscope Image [PDF]
食管疾病是常见疾病之一,对人们的健康产生了严重的威胁。随着超声内镜(EUS)应用的发展和普及,提高了食管成像清晰度,成为临床诊治的必要诊断工具。超声内镜可为食管疫病的诊断及给出合理的治疗方案给予非常大的帮助,但是国内外对EUS诊断主要依靠内镜医师个人经验,缺乏客观诊断依据,因此使得EUS的应用受到限制。由此看来利用计算机技术对食管疾病进行辅助诊断是非常有意义的。 本文主要研究三类食管EUS图像分类的问题,包括食管早癌、食管平滑肌瘤以及正常食管。首先对EUS图像进行去噪处理,之后提取EUS图像的特征点 ...
魏倩倩
core
ABSTRACT Objective To test the non‐inferiority of extended abdominopelvic ultrasound examination compared with contrast‐enhanced computed tomography (CT) and whole‐body diffusion‐weighted magnetic resonance imaging (WB‐DWI/MRI) in discriminating preoperatively between resectable and non‐resectable disease based on the European Society for Medical ...
D. Fischerova +26 more
wiley +1 more source
Effect of Different Methods of Analgesia on Analgesic after Total Knee Arthroplasty [PDF]
目的比较不同镇痛方法(局部镇痛、硬膜外镇痛、静脉镇痛、髂筋膜间隙阻滞复合静脉镇痛)对全膝关节置换术(TKA)术后镇痛的效果影响。 方法择期单侧TKA患者80例,随机分为四组:局部镇痛组(L组)、静脉镇痛组(I组)、硬膜外镇痛组(E组)、髂筋膜间隙阻滞复合静脉镇痛组(F+I组),术中均采用腰硬联合麻醉。记录术前、术毕1、8、24、48h静息VAS评分和术前、术毕8、24、48h运动VAS评分;记录患者术后其它镇痛药物(凯酚、丁丙诺菲皮贴)的额外使用次数;记录术前、术后8、24h的IL-6和皮质醇水平 ...
郑星星
core
Whose Voices Are Heard? Parliamentary Committee Witnesses as Gendered Representatives
ABSTRACT Are women sources of expertise for parliamentary policy discussions? In most parliaments, committees are the only venue where citizens can speak directly to the legislature; we argue that the proportion of women witnesses has implications for gender equality in policymaking. We present an original dataset of over 52,000 parliamentary committee
Elizabeth McCallion +1 more
wiley +1 more source

