Results 61 to 70 of about 223 (102)

北方土石山区冻融与水力复合作用对土壤侵蚀的影响

Shuitu Baochi Xuebao
[目的] 揭示冻融与水力作用在不同条件下对北方土石山区土壤侵蚀的影响。[方法] 以北京市鹫峰地区土壤为研究对象,采用室内径流冲刷及冻融设备进行模拟试验,探讨在冻融与水力作用下冻融循环次数、坡度、流量、土壤初始含水率和冻融温差这5个影响因素对土壤产沙量与抗冲性的影响。[结果] (1)土壤抗冲系数对各因素敏感程度大小为坡度>流量>冻融温差>冻融循环次数>初始含水率,其中坡度与流量对其具有显著影响(p 坡度>冻融温差>土壤含水率>冻融循环次数,其中流量对其具有极显著影响(p
杨浩宇, 马岚, 陈仕媛
doaj  

[Initial exploration of non-invasive diagnosis of eosinophilic chronic rhinosinusitis with nasal polyps via nasal brush sampling]. [PDF]

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
Chen Z, Guo J, Chen W, Meng Y, Li D, Zhou J, Wang Z.   +6 more
europepmc   +1 more source

[Bayesian network analysis of harsh parenting, experiential avoidance, and adolescent short video addiction risk]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Lyu LH, Jiang JJ, An XL, Guan CB, Yang H, Hao Y.   +5 more
europepmc   +1 more source

Study on the utilization factors of oral health services of children aged 7-8 years in Weifang. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi, 2022
Lin C, Zhang X, Tian H, Luan K, Sun H, Fan X.   +5 more
europepmc   +1 more source

[Research on flow characteristics of dual-outlet centrifugal disk blood pumps]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Lian Q, Xiao Y, Xiao Y, Cao Z, Cui G.
europepmc   +1 more source

[Evaluation of the accuracy of three-dimensional data acquisition from liquid- interference surfaces assisted by a scanner head with a compressed airflow system]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Xu X, Zhao J, Tian S, Liu Z, Zhao X, Zhao X, Jiang T, Chen X, Ma C, Sun Y.   +9 more
europepmc   +1 more source

[Differentiation of stem cells regulated by biophysical cues]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2023
Li C, Fan Y, Zheng L.
europepmc   +1 more source

[Extracellular matrix materials and tissue regeneration and repair]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Zhao L, Xie H.
europepmc   +1 more source

基于PIV的茎秆倒伏角度对坡面薄层流水动力学特性的影响

Shuitu Baochi Xuebao
目的坡面植被在水流冲刷或风力等外力作用下，易发生不同程度的倒伏，为探究植被倒伏角度对坡面薄层流水动力特性及侵蚀冲刷过程的影响。方法利用亚克力圆柱体模拟植株茎秆，开展室内水槽冲刷试验，设置6组倒伏角度（45°、75°、90°、105°、135°、150°）与3组流量条件（0.23、0.52、0.76 L/s），采用高频粒子图像测速系统（particle image velocimetry， PIV）捕捉流场图像并进行流场绘制，分析不同茎秆倒伏角度对流场特性、紊动特性与涡旋结构特征的影响。结果1 ...
张迪, 张会兰, 李峰, 谷方正, 王铃涵   +4 more
doaj  

[Clinical study of double-channel core decompression combined with medullary cavity irrigation for non-traumatic osteonecrosis of femoral head]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Ma J, Li H, Liu H, Wang B, Wang W, Gao F, Sun W, Cheng L.   +7 more
europepmc   +1 more source