Results 91 to 100 of about 1,065,700 (121)

长江上游重点水土流失区坡耕地土壤侵蚀的^137Cs法研究

Shuitu Baochi Xuebao, 2003
利用137Cs示踪技术,对长江上游重点水土流失区(金沙江下游及毕节地区、嘉陵江中下游地区、嘉陵江上游陕南陇南地区和三峡库区)坡耕地土壤流失速率进行了初步研究。结果表明,研究区土壤类型、坡度等因子对坡耕地土壤流失速率的影响较大,陕南区砾质土、三峡库区黄壤坡耕地的土壤流失速率相对较小,34°砾质土坡耕地,多年平均土壤流失率为985t/(km2·a),31°黄壤坡耕地为2059t/(km2·a);嘉陵江中下游地区和三峡库区紫色土、陕南区黄褐土、陇南区黄绵土和金沙江燥红土坡耕地土壤流失速率较高,一般在2000 ...
WANG Yukuan, WEN Anbang, ZHANG Xinbao   +2 more
doaj  

三峡库区地表水和鱼体中甲基汞含量的分布特征

, 1997
首次报道了三峡库区鲤鱼（Ｃｙｐｒｉｎｕｓｃａｒｐｉｏ）、铜鱼（Ｃｏｒｅｉｕｓｈｅｔｅｒｏｄｏｎ）、长吻鱼危（Ｌｅｉｏｃａｓｉｓｌｏｎｇｉｒｓｔｒｉｓ）和翘嘴鱼白（Ｃｕｌｔｅｒａｌｂｕｅｎｕｓ）各组织器官中甲基汞的含量水平，以及地表水甲基汞的浓度。证明鱼体肌肉中甲基含量最高，其次为肝脏、肾脏、脾脏。各组织器官中甲基汞含量与有机汞、无机汞和总贡含量呈显著线性关系；水库鲤鱼甲基汞含量高于河流鲤鱼 ...
靳立军,徐小清
core  

[Fibroblast growth factor 21 improves alcoholic liver disease by regulating gut microbiota in mice]. [PDF]

Zhonghua Gan Zang Bing Za Zhi
Wu GC, Miao X, Zhang WJ, An X, Xia LN, Tang CW.   +5 more
europepmc   +1 more source

三峡库区非线性延迟的环境效应及其防治对策

, 2002
介绍了非线性延迟的环境效应的概念、危害及其预测和防治对策。针对三峡库区的污染现状 ,与浙江千岛湖 (新安江水库 )建库 4 0年后蓝藻水华暴发的环境状况比较 ,强调三峡水库局部水域可能存在人为富营养化污染引起的非线性延迟的环境效应 ,特别是水库蓄水后库区支流香溪河水域蓝藻水华暴发的风险性极大 ;根据三峡水库毗邻武陵山汞矿带高汞背景区 ,燃煤的硫和汞含量较高 ,以及库区酸沉降和汞污染状况较为严重的状况 ,提出库区存在汞甲基化和酸沉降引起的非线性环境效应。讨论了相应这些效应的控制对策和措施 ...
徐小清,肖邦定,方涛,郑利
core  

[Ursolic acid in <i>Huajie Xiaoliu</i> Formula inhibits colorectal cancer cell growth by inducing cuproptosis]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Jin C, Hong Z, Duan X, Fan H, Yang J, Qin J, Zou L, Qin M.   +7 more
europepmc   +1 more source

[Current applications and future perspectives of automation technologies and devices in oral diagnosis and treatment]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Zhang X, Cao H, Zhou Y.
europepmc   +1 more source

[Wedge Resection of Pulmonary Nodules (≤2 cm): 
A Consensus Statement by Specialists of Thoracic Surgery (2023 Edition)].

Zhongguo Fei Ai Za Zhi, 2023
Hu J, Chen J, Chen C, Zhong W, Geng Q, Editorial Committee of Consensus on Wedge Resection of Lung Nodules (≤2 cm) (2023 Edition).   +5 more
europepmc   +1 more source

[Chinese Expert Consensus on Diagnosis and Treatment of Non-small Cell Lung Cancer with MET Abnormality (2026 Version)]. [PDF]

Zhongguo Fei Ai Za Zhi
Chen J, Han B, Hu Y, Hu J, Shi Y, Lung Cancer Specialty Committee of Chinese Elderly Health Care Association.   +5 more
europepmc   +1 more source

[Key role of biomechanical properties and material selection in rotator cuff repair]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Cai X, Zhou Y.
europepmc   +1 more source

[2020 clinical practice guidelines of endotracheal suctioning in neonates with mechanical ventilation]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi, 2020
Evidence-Based Medicine Group, Neonatologist Society, Chinese Medical Doctor Association, Respiratory Group, Neonatologist Society, Chinese Medical Doctor Association.   +5 more
europepmc   +1 more source