Results 71 to 80 of about 16,978 (167)
Zhongguo shiyan zhenduanxue, 2009 目的探讨纤溶酶原激活剂抑制物-1、组织型纤溶酶原激活物及血小板参数在脑梗死患者中的变化。方法对60例脑梗死患者及60例健康体检者进行血小板及其参数、纤溶酶原激活剂抑制物-1、组织型纤溶酶原激活物的测量。结果与对照组相比,脑梗死患者中血小板、组织型纤溶酶原激活物含量显著低于对照组 ...
李杰
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Direct numerical simulation of inclusion floating and collision behavior in molten steel using the lattice Boltzmann method [PDF]
, 2016 The floating and collision behavior of inclusions in the floating process was numerically simulated by using the Lattice Boltzmann method. It is found that the floating velocity simulation results of different size inclusion particles are almost the same
GUO Luo-fang +4 more
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Zhejiang Daxue xuebao. Lixue ban, 2011 由于等离子体显示用蓝色荧光粉BaMgAl10O17：Eu2+(BAM)的易老化，色坐标易变化的特有性质，用荧光粉的常规表征参数发光亮度和色度坐标来表征其发光特性，难以真正反映它的质量，是不合适的，依据彩色显示重现系统的有关理论，结合制备BaMgAl10O17：Eu2+(BAM)工艺参数与其耐热和耐真空紫外线辐射稳定性的有关实验数据，建议采用色度坐标和Z刺激值两物理量表征BAM荧光粉的发光特性，可进一步科学客观反映其质量.
LIUJia-hai(刘加海) +4 more
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Prediction of thermal conductivity of 93W–Ni–Fe alloys in sintering process based on finite element analysis [PDF]
Thermal conductivity is an important thermophysical parameter required for the numerical simulation of constitutive equations. The existing thermal conductivity measurement equipment and methods cannot measure the thermal conductivity of refractory ...
PAN Qian +6 more
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Thermal Stress Analysis of Transversally Corrugated Tube in Solar Receiver Under Semi-Circumference Heating [PDF]
ObjectiveIn daily operation, the outer wall of solar receiver tube is subjected to uneven heat flux between the inner and outer sides at cylindrical receiver, which leads to the uneven distribution of wall temperature and large temperature gradient.
CHEN Jiashu +4 more
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Gaoya dianqi, 2016 建立气密继电器电弧流体仿真模型的基础是获得电弧等离子体的热物性参数特性。文中为了获得在30020 000 K温区,压强0.1、0.4、0.8、1.0 MPa,银蒸汽的比例为1%、10%、50%条件下的N2-Ag等离子体热物性数据,通过最小吉布斯自由能模型计算了N2-Ag等离子体的热力学特性。利用新的势能模型计算了N2-Ag混合等离子体的碰撞积分,进而确定了N2-Ag等离子体的输运特性。同时着重讨论了热物性特性在不同压强和不同银蒸汽含量时的演变情况。结果表明,增大压强能抑制等离子组分的分解反应和电离反应 ...
翟子楠, 王小华
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Research on the cold charging performance of refrigerated truck accumulator plate based on heat pipe heat transfer [PDF]
ObjectiveTo improve the cold charging efficiency of cold plate type refrigerated logistics vehicles and optimize the structural parameters of heat pipe type cold storage plate.MethodsA mathematical-physical model was established for heat pipe accumulator
HUANG Jiexuan +4 more
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He jishu在原子核密度泛函理论框架下，理论预测的不确定度可分为两类：模型内参数不确定度引起的统计误差和模型间系统误差。前者源于参数校准过程中实验数据的误差传递，后者表现为不同模型对同一物理量预测的系统性差异。本文介绍了用于量化这两类不确定度的贝叶斯推断方法，并重点阐述了其两个典型应用：基于机器学习的贝叶斯参数估计在原子核密度泛函参数校准中的应用以及贝叶斯模型平均方法在量化核物质对称能模型间系统不确定度中的应用。
丘 梦莹, 张 振
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Numerical simulation and experimental study of the temperature field of AlCoCrFeNi2.1 by selective laser melting [PDF]
AlCoCrFeNi2.1 eutectic high-entropy alloy is widely utilized in the aerospace, nuclear power, military, and automotive industries due to its exceptional properties, such as high strength, excellent ductility, and remarkable wear and oxidation resistance.
Congcong YUE +5 more
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SIMULATION FOR BULK PROPYLENE POLYMERIZATION IN LOOP REACTOR WITH THE STEP CHANGE IN FEED FLOW RATE OF MATERIAL [PDF]
, 2007 采用机理建模方法对环管反应器中丙烯液相本体聚合过程进行了模型化研究,建立了环管反应器内丙烯液相本体聚合的微观动态模型。采用该微观动态模型,考察了非稳态操作条件下物料阶跃变化时,环管反应器的主要物料进料量对丙烯聚合过程的影响。结果表明,随丙烯进料量增加,体系转化率降低,聚合物的质均相对分子质量和熔融指数变化不大;对催化剂进料量的阶跃变化而言,随着催化剂进料量增加,体系转化率增加,质均相对分子质量和熔融指数的变化较小;H2进料量的改变不会使体系转化率发生变化,但是随着H2进料量的增加 ...
温少桦, 罗正鸿, 郑屹
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