Results 71 to 80 of about 14,805 (141)

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

open access: yesZhongguo Dang Dai Er Ke Za Zhi
Lyu LH   +5 more
europepmc   +1 more source

[Development of a surface electromyography index system for orofacial muscles and validation of a discriminant model in unilateral molar occlusal interference]. [PDF]

open access: yesBeijing Da Xue Xue Bao Yi Xue Ban
Li W   +11 more
europepmc   +1 more source

冻融循环对不同退化程度高寒草甸土孔隙结构的影响

open access: yesShuitu Baochi Xuebao
目的冻融循环是高寒地区重要的物理过程,为明确冻融作用对不同退化程度高寒草甸土体微观结构的影响。方法以青海门源地区不同退化程度高寒草甸土为研究对象,以不同含根量表征不同退化程度,对重塑试样进行冻融循环试验和SEM电镜扫描,分析不同冻融次数及冻融条件下不同质量含水率和含根量对草甸土微观结构的影响。结果随冻融次数增加,高寒草甸土体孔隙分形维数持续增大,平均直径呈减少趋势,在7次冻融后趋于稳定,孔隙度增长集中于前4次冻融中。草甸土体质量含水率越高,冻融后孔隙度增长幅度越大。当质量含水率>40%时 ...
洪晨泽   +6 more
doaj  

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