Results 71 to 80 of about 5,026,722 (123)

入渗水水质对土壤导水特性影响的试验研究

Shuitu Baochi Xuebao, 2017
为探究不同入渗水水质对土壤导水特性的影响，采用圆盘负压入渗法进行试验研究，选取两种水质（蒸馏水和自来水）对黄壤土和红壤土进行4个压力水头（0，-3，-6，-9 cm）下的圆盘入渗试验。结果表明，随着入渗水电导率的增大，土壤入渗率、吸渗率及导水率均随之增大，且红壤土在不同电导率的入渗水作用下土壤吸渗率的变化差异显著（P＜0.05）。在低水头压力下，两种水质入渗条件下测得的土壤导水率差异显著（P＜0.05）；在高水头压力下，两种水质入渗下测得土壤导水率差异不显著 ...
张, 佘冬立, 傅
doaj  

下垫面变化对喀斯特坡地地下产流产沙的影响

Shuitu Baochi Xuebao, 2018
通过人工模拟降雨试验，探索表土剥离对喀斯特坡耕地侵蚀产沙的影响。采用钢槽装填土石模拟喀斯特坡地的“二元结构”。通过正交试验分析了下垫面类型（坡耕地、裸坡地）、雨强(0.5，0.8，1.3 mm/min)和地下孔(裂)隙度(1%，2%，3%，4%，5%)对坡地地下产流、产沙的影响。结果表明：表土剥离导致下垫面土壤物理性质改变，是影响坡地产流、产沙特征变化的主要因素。降雨强度主要影响坡地地下产流量和产沙量，地下孔(裂)隙度主要影响径流和泥沙在地表和地下的分配比例 ...
严友进, 杨
doaj  

[Coupling characteristics of cellular electroporation and electrodeformation based on dynamic Young's modulus: influence of membrane thickness]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Wei X, Zou S, Guo F, Liu L.
europepmc   +1 more source

[A simulation study on the differences in compressive mechanical properties of Voronoi porous structures with two strut-diameter morphologies]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Men Y, Wang T, Wu M, Zhang C.
europepmc   +1 more source

利用林木位置圖探討孔隙對林木生長之影響

, 2014
本研究的目的是以馮、李（2000）GIS方法繪製不同密度的柳杉永久樣區之林木位置圖，配合胸高直徑－樹冠迴歸式繪製樹冠投影圖，觀察其孔隙變化情形，並嘗試由Schnute單株生長模式及其參數變化來探討孔隙對林木生長產生的影響。結果顯示，孔隙變化愈大，其生長潛力愈強及其參數變化愈大，建議無論林分生長模式與單株林木生長模式，宜加入表示孔隙的參數。In the study, the tree location map of 5 different density of permanent sampling ...
馮豐隆, 李宣德
core  

[Study on the effect of superficial layer damage on cartilage retention performance]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Han Z, Gao L, Yang F, Chen R, Li W, Zhang C.   +5 more
europepmc   +1 more source

[Effect of porous surface structure on fatigue strength of 3D printed zirconia]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Zhao J, Ding Q, Li W, Ma Q, Lan Y, Zhang L, Han J.   +6 more
europepmc   +1 more source

[Application of transverse tibial axis reference method in rotational positioning of femoral prosthesis in total knee arthroplasty]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Wei X, Wei Q, Yang H, Hao L, Zhang H, Yin Z, Li Y.   +6 more
europepmc   +1 more source

["I love the lab" research training： a cationic covalent organic framework aerogel for organic dye removal]. [PDF]

Se Pu
Li YM, Li HY, Cao DX, Tang AN, Kong DM.
europepmc   +1 more source

[Short-term effecetiveness of endoscopic lumbar discectomy combined with annular suturing in treatment of lumbar disc herniation]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Zhang S, Yao F, Liao Z, Wang T, Shen M.
europepmc   +1 more source