Results 121 to 130 of about 17,994 (170)

ランビル国立公園における樹液流測定に関する報告 [PDF]

open access: yes, 2018
久米 朋宣   +3 more
core   +1 more source

深圳市酸雨特征及其成因分析

open access: yesShuitu Baochi Xuebao, 2007
研究了深圳市1991~2004年的酸雨时空分布、降雨化学组成及其成因分析。结果表明,深圳市酸雨14年间pH平均值为4.98,酸雨频率为44.2%;降雨中SO4^2-与NO3^-比值是3.78:1,低于全国平均值6.4;酸雨夏秋两季较为严重,主要集中在3~9月份,而冬春两季降雨酸度和酸雨频率均较小;酸雨强度由西向东依次减弱;降雨中离子来源主要是工业和交通排放的酸性污染物,但陆地源和海洋源对降雨酸度的影响也较大。
doaj  

[Impact of lamina formation range on lumbar biomechanics in unilateral biportal endoscopic spine surgery: a finite element analysis for surgical optimization]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Ji S   +10 more
europepmc   +1 more source

[Progress and challenges of poly (<i>L</i>-lactic acid) membrane in preventing tendon adhesion]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Zhang J, Hu X, Shen J, Huang Y, Liu S.
europepmc   +1 more source

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