, 2016 以黄土丘陵区四种多年生牧草（鸡脚草、白三叶、小冠花、百脉根）为研究对象，采用人工模拟降雨试验方法，定 量研究不同草被措施不同生长阶段（５月上旬、６月上旬、７月中旬和８月下旬）的坡面水沙调控效应及土壤水分转化 特征。结果表明：在整个生长周期内，四种草被措施坡面产沙率和含沙量均表现为鸡脚草坡面＜白三叶坡面＜小冠 花坡面＜百脉根坡面＜裸地坡面。随着生长时间延长，四种草被措施坡面减流效益、减沙效益、土壤稳定入渗速率和 土壤平均含水量增量均呈现先增大后减小的趋势。其中，鸡脚草坡面和白三叶坡面在结实期达到最大 ...
宋亚倩 +3 more
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[Hydrodynamic finite element analysis of biological scaffolds with different pore sizes for cell growth and osteogenic differentiation]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanHu Y, Lyu W, Xia W, Liu Y.
europepmc +1 more source
土壤渗透系数测定与计算方法的探讨/Determination and calculation of soil permeability coefficient[J]
, 2011 为准确地测定土壤渗透系数,采用能态学的观点,分析了双环入渗法和环刀法测定土壤饱和渗透系数时饱和土体中压力势的分布规律,根据达西定律定量研究了双环入渗法和环刀法测定土壤渗透系数的计算方法.结果表明,土壤饱和渗透系数大于双环入渗法测定的稳定入渗速率;当采用双环入渗法和环刀法测定土壤的饱和渗透系数时,土壤剖面土壤水压力势分布规律不同.因此 ...
Gan Yongde +10 more
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[Chemotherapy-free induction therapy for a critically ill pregnant woman with Philadelphia chromosome-positive acute lymphoblastic leukemia: a case report and literature review]. [PDF]
Zhonghua Xue Ye Xue Za ZhiGao M +10 more
europepmc +1 more source
, 2015 分析4种不同结构层状土水分入渗规律，为晋陕蒙接壤区露天矿排土场建设筛选合适的 层状土体。设置沙土、砒砂岩、黄绵土和红黏土4种均质土柱以及黄-沙-红、黄-红-沙、沙-黄-砒、 黄-砒-沙4种层状土，借助室内土柱自动观测系统测定矿区土壤的入渗过程，通过入渗速率、累积入渗 量、湿润锋运移、剖面含水量变化分析不同结构层状土入渗特征，结合晋陕蒙接壤区自然条件，评价 适合排土场建设的层状土体。结果表明：黄-沙-红、沙-黄-砒型层状土在短时间内能储存大量水分， 且第三层土体阻水作用强，黄-沙 ...
吴奇凡 +4 more
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[Medical treatment standards for emergency trauma wounded (2025 edition)]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiNational Health Commission Of The People's Republic Of China.
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[Rare massive upper gastrointestinal bleeding: Three cases of Dieulafoy<b>'</b>s disease within diverticula of the descending duodenal and a literature review]. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue BanZhao Q, Zhang J, Zhou Q, He Z, Li H.
europepmc +1 more source
[Current status and future directions of stability reconstruction following spinal tumor resection]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiZhou J, Dong J.
europepmc +1 more source
[Rheumatoid arthritis complicated with necrotizing fasciitis: A case report]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanLyu X +7 more
europepmc +1 more source
[Adaptive lesion-aware fusion network for joint grading of multiple fundus diseases]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiZeng W, Guo S.
europepmc +1 more source