Results 111 to 120 of about 23,541 (148)

Effect of CaCl_2 on Fine Sediment Flocculation and Settling in Still Water

open access: yes, 2000
细颗粒泥沙的絮凝或分散对土壤渗透性、土壤可蚀性有重要作用 ,是水土保持研究的重要内容。在 Ca Cl2 浓度为 0~ 1.0 mmol/L ,泥沙浓度为 10 g/L时 ,用吸管法研究了 Ca Cl2 对细颗粒泥沙絮凝沉降的影响。结果表明 :泥沙沉降分 2个阶段 ,分选沉降段和絮凝沉降段 ;在絮凝沉降段 ,Ca Cl2 浓度越大 ,絮凝沉降越快。但较高浓度时 ,细颗粒泥沙平均沉速反而随 Ca Cl2浓度增大而逐渐减小 ;泥沙浓度随时间呈指数衰减 ;细颗粒泥沙絮凝临界粒径为 0 .0 ...
邵明安, 陈洪松
core  

[The application of perfusion technique in otoendoscope surgery]. [PDF]

open access: yesLin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi, 2021
Kong W.
europepmc   +1 more source

悬浮区对竖流沉淀效果影响研究

open access: yesGongye shui chuli
竖流沉淀依靠絮体自然沉淀和悬浮区拥挤沉淀实现固液分离,适度絮凝能充分发挥二者的协同作用,降低药剂投加量,提高沉淀效果。为了明确悬浮区的作用,开展了连续流竖流沉淀试验,考察测试不同工况下絮体的形态、悬浮区状态、沉淀效果等变化规律,重点分析了轻度絮凝、中度絮凝和重度絮凝3个典型的工况。结果表明:轻度絮凝的絮体自然沉降效能和悬浮区拦截效果均不佳;重度絮凝虽然絮体自然沉降效果好,但是悬浮区拦截效果较差;只有中度絮凝可以较好地平衡絮体自然沉降和悬浮区拦截的协同作用,沉淀效果最好,对应的絮体分型维数为1.83 ...
鄢碧鹏, 丁杨杨
doaj  

[Chinese guideline on the diagnosis and treatment of adult primary immune thrombocytopenia (2025)]. [PDF]

open access: yesZhonghua Xue Ye Xue Za Zhi
Thrombosis and Hemostasis Group   +2 more
europepmc   +1 more source

Numerical study of flocculation settling of cohesive sediment

open access: yes, 2010
盐度等因素对泥沙絮凝沉降的影响是本文的研究目的.考虑了泥沙颗粒在水中的多体相互作用, 以及颗粒间的XDLVO势.分析了盐度、泥沙浓度、Hamaker常数、水合作用对泥沙絮凝沉降的影响.获得的泥沙絮凝沉降速度的拟合公式与计算和试验相符 ...
王龙, 李家春, 周济福
core  

[Succinate Dehydrogenase-Deficient Renal Cell Carcinoma: Clinicopathological Analysis of 11 Cases]. [PDF]

open access: yesSichuan Da Xue Xue Bao Yi Xue Ban
Pan X   +7 more
europepmc   +1 more source

[Lamotrigine induced hypersensitivity syndrome in children: a case report]. [PDF]

open access: yesBeijing Da Xue Xue Bao Yi Xue Ban, 2019
Cui NX, Zhu XP.
europepmc   +1 more source

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