Results 31 to 40 of about 16,978 (167)
Numerical simulation of zinc dross diffusion in a continuous hot dip galvanized zinc pot under the industrial production condition [PDF]
, 2016 Based on the discrete phase model of the Euler-Lagrange equation,the concentration fields of three different types of zinc dross under a circulating purification system were calculated by using the numerical simulation method.
DONG An-ping +4 more
core +1 more source
Conservation Biology, EarlyView.Scaling area‐based conservation, including initiatives led or comanaged by Indigenous Peoples and local communities, is a flagship goal of the Kunming‐Montreal Global Biodiversity Framework. Conservationists often aspire to scale initiatives, but this is rarely achieved in practice. Identifying and addressing factors that limit initiative adoption (i.e.
Thomas Pienkowski +39 more
wiley +1 more source
Gaoya dianqi, 2016 开关设备（例如高压SF6断路器）触头表面产生的铜金属蒸气会改变电弧等离子体的物理化学特性。因此在建立考虑金属烧蚀的流体仿真模型之前,需要确定含有金属蒸气的电弧等离子体的性质。文中基于吉布斯自由能最小化原理和Chapman-Enskog理论,计算了SF6-Cu混合气体电弧在0.6 MPa压强下、温度区间为30030 000 K时的物性参数,包括平衡态粒子组分、统计热力学参数、输运系数和混合扩散系数,着重分析了铜蒸气浓度（最大90%）对上述物性参数的影响。结果表明少量的铜对物性参数无明显影响 ...
袁端磊 +5 more
doaj
, 1987 文献[3,4]表述了描述等离子CVD化学反应器流场的数学物理模型,并利用Patankar方法对冷热流场作了求解。本文在此基础上就影响反应器流场、温度场和浓度场的有关参数作了理论研究。所研究的问题有:冷热流场的差别,喷射环缝密度和主流旋转速度对流动的影响。所得结果清楚地表明:这些参数的选择对反应器的性能有着不同程度的影响 ...
朱清文, 赵国英
core
Hobbyist preferences for pet freshwater turtles
Conservation Biology, EarlyView.Abstract The burgeoning pet trade is a primary threat to wild freshwater turtles worldwide. Although the risks from commercial exploitation of turtles have been discussed widely, there is little empirical research on preferences for pet turtles from a hobbyists’ perspective.
Jingjing Zhao +7 more
wiley +1 more source
Zhongshan Daxue xuebao. Yixue kexue ban, 2019 【目的】探索青光眼患者角膜生物力学与视盘生物力学间的关系。【方法】前瞻性病例观察研究。观察32例原发性开角型青光眼（POAG）患者、20例正常眼压性青光眼（NTG）患者、15例高眼压症（OHT）者和26例正常者的角膜生物力学参数及筛板厚度特征，评估测量筛板厚度（LCT）的可重复性，采用单因素方差分析比较不同类型青光眼者间筛板厚度差异，并应用Spearman相关分析方法分析角膜生物力学参数与筛板厚度相关性。【结果】扫频OCT所测量筛板厚度的Cronbach′sα系数0.911，组内相关系数ICC也大于0 ...
杜绍林
doaj
Intensity Distribution Design for Laser-Induced Thermal Loading Based on Numerical Simulation [PDF]
, 2006 To accomplish laser-induced thermal loading simulation tests for pistons,the Gaussian beam was modulated into multi-circular beam with specific intensity distribution.A reverse method was proposed to design the intensity distribution for the laser ...
Li SX(李少霞) +2 more
core
Informing spatial conservation prioritization with species’ traits
Conservation Biology, EarlyView.Abstract New Guinea, the most botanically diverse island on the planet, is the location for one of the boldest conservation initiatives. The Manokwari Declaration aims to achieve 70% conservation designation for the Bird's Head Peninsula. This is 40% higher than the 2022 Global Biodiversity Framework target.
Liam A. Trethowan +27 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2015 目的应用三维能量多普勒超声对盆腔肿物内血流参数进行定量分析,探讨三维能量多普勒鉴别盆腔肿物良恶性的价值。方法测量24例盆腔包块,其中包括血流指数(flow index,FI)、血管形成指数(vascularization index,VI)、血管形成-血流指数(vascularization-flow index,VFI)。对比分析两组血管参数值。结果 1三维能量多普勒血管成像可较清晰显示肿物内血流架构;2恶性肿物组的VI、FI和VFI值均明显高于良性肿物组 ...
蒋雪, 冯蕾, 王琼, 杜领娣
doaj
Gaoya dianqi, 2022 植物绝缘油因其较好的绝缘性能及绿色环保等优势,逐渐成为传统矿物绝缘油替代品研究的热点。太赫兹波段光谱具有独一无二的指纹特征吸收峰,使其成为近年来物质检测热点技术之一。文中利用绝缘油的太赫兹时域光谱快速、准确、稳定的数据采集特性,对植物绝缘油的老化状态进行诊断。首先,利用改进的电磁波传递函数消除了仪器和容器的法布里—珀罗(F-P)效应。然后计算出植物绝缘油的吸收系数、折射率等THz谱参数,分析了植物绝缘油在太赫兹区域的介电性能。最后,与相应老化状态下的糠醛浓度进行对比,结果表明 ...
郭丽 +4 more
doaj