, 2016 为考察气固两相流中颗粒团聚对气固传质过程的影响,采用耦合传质的格子Boltzmann模型对在空间均匀分布的颗粒结构和非均匀分布的颗粒团聚物结构条件下的绕流过程进行了直接数值模拟,得到了气体绕颗粒流动的速度分布和伴随流动的浓度分布,发现颗粒团聚物对绕流过程的速度分布和浓度分布都具有明显的影响。通过对颗粒绕流的气固传质过程进行定量分析发现,在两种结构条件下计算得到的传质舍伍德数均随着雷诺数的增大而呈指数函数形式增大,并且在均匀结构条件下的传质舍伍德数一般为非均匀结构条件下的3~5倍 ...
吴承优, 王利民
core
[Associations of subjective perceptions and income change with transitions in usual source of care among Chinese residents: A study based on China Family Panel Studies]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanXu C, Jian W.
europepmc +1 more source
[Current applications and future perspectives of automation technologies and devices in oral diagnosis and treatment]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiZhang X, Cao H, Zhou Y.
europepmc +1 more source
[Impact of optimizing the quality control system on newborn screening outcomes for congenital hypothyroidism]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiWang J +6 more
europepmc +1 more source
, 2017 为研究电流变液的剪切强度,首先采用化学共沉淀法合成棒状草酸氧钛酸钙(CTO)纳米颗粒,通过改变聚乙二醇的相对分子质量、用量以及水和乙醇的配比调节颗粒形貌;然后将最优条件下制备的棒状结构CTO纳米颗粒均匀地分散在硅油中,发现制得的电流变液表现出优异的电流变特性和抗沉降性,屈服应力可达180 k ...
程昱川 +3 more
core
[Clinical analysis of free fibular skin flap of great toe for repair of finger flexion deformity due to scar contracture]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiZhang K +8 more
europepmc +1 more source
, 2009 选取具有物理基础的分布式水文模型MIKE SHE来模拟大尺度资料稀缺地区水文过程。以塔里木河主要源区之一开都河流域为研究区域,将流域内气象水文站点观测数据与遥感数据相结合,运用GIS空间分析方法修正数据输入。利用气象、土壤类型、土地利用和地表覆盖、数字高程和降雨等资料,研究大气、陆面、地表水和地下水的相互作用机理,通过模型敏感性分析确定了5个"自由"参数,并依据出山口水文站数据对模型进行率定和验证。结果表明,MIKE SHE能在水文、气象站点稀少,土壤及水文地质数据缺乏的条件下 ...
黄粤 +4 more
core
[Synergistic learnable frequency and multi-scale spatial network for lightweight skin cancer classification]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiZhuang J, Lyu Z, Li X.
europepmc +1 more source
[Research on electrical impedance tomography for pediatric pneumonia based on an improved radial basis function neural network]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiWang R +5 more
europepmc +1 more source
[Clinical application progress, hot topics, controversies and future prospects of segmental metallic ureteral stents]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanHu H, Bian X, Xu T.
europepmc +1 more source