Results 101 to 110 of about 2,686 (157)

黄土丘陵区深层土壤有机碳对土地利用变化的

, 2015
土地利用变化在全球碳平衡及气候变化中起着重要作用。目前对黄土高原地区土 壤有机碳库虽然已经进行了大量卓有成效的研究工作，但绝大部分仍是以浅层有机碳 含量或者有机碳库大小作为研究对象，而近期一些研究表明，1m 以下的深层土壤积 聚的有机碳十分可观。该区天然次生林转变为人工林及农田等植被破坏过程中，土壤 有机碳变化的研究还鲜见报道，还不足以科学认识该区土地利用变化对土壤有机碳的 影响方式和程度。本文以黄土丘陵区子午岭为研究区，以天然乔木林、天然灌木林、 人工乔木林、撂荒地、农地 5 ...
张 帅
core  

[Efficacy of sequential lateral position management in patients with chronic wounds and pulmonary complications: a prospective RCT]. [PDF]

Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi
Yin X, Chang F, Shao LJ, Cao J, Sha W.
europepmc   +1 more source

[Performance evaluation of different filtration fractions during daytime continuous renal replacement therapy]. [PDF]

Zhejiang Da Xue Xue Bao Yi Xue Ban
Wang L, Chen Y, Xu G, Xu C.
europepmc   +1 more source

[Metabolomic alterations in preterm infants with bronchopulmonary dysplasia]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Wu YY, Bu QQ, Wang X, Li T, Wu HY, Kang L, Wang YY, Liu DP, Guo J, Wang CJ, Kang WQ.   +10 more
europepmc   +1 more source

[He<b>'</b>s Yangchao recipe ameliorates premature ovarian insuf-ficiency by remodeling intestinal microbiota to promote granulosa cell glycolysis]. [PDF]

Zhejiang Da Xue Xue Bao Yi Xue Ban
Lin F, Liu Q, Zhao Y, Chen Y, Wang R, Miao C, Zhang Q.   +6 more
europepmc   +1 more source

典型黄土-古土壤剖面有机碳和黏土矿物分布特征及古环境意义

, 2018
黄土-古土壤序列是记录第四纪气候环境变化的良好信息载体之一。本文以黄土高原南缘陕西省淳化黄土-古土壤序列为研究对象，通过调查剖面上土壤黏土矿物和有机碳含量、密度、组分以及结构的分布特征，并将黏土矿物与已有的古气候联系，有机碳与古气候替代指标土壤粒度、CaCO3含量进行相关分析，再结合已有第四纪气候的研究以及现代不同气候条件下土壤有机碳组分的变化规律的相关研究，探索土壤黏土矿物和有机碳特征对黄土高原第四纪古气候环境的指示意义，从而揭示黄土高原南部地区在更新世时期的气候环境演变规律。结果表明： （1 ...
张青青
core  

[Aerobic exercise regulates macrophage polarization and improves insulin resistance in mice: the mediating role of miR-221-3p]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Li N, Zhang L, Guo Q, Zhou Y, Liu C.
europepmc   +1 more source

[Research progress in the application of molecular imprinting technology in catalysis]. [PDF]

Se Pu
Ye WM, He DC, Cui XJ, Ma HW, Qian B, Shi F.   +5 more
europepmc   +1 more source

[Comparison of setup errors between two immobilization methods in prostate cancer radiotherapy based on cone-beam computed tomography]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Liu J, Ma M, Wang Q, Shi M, Yin J, Wang Z, Shen J, Gao X.   +7 more
europepmc   +1 more source

[<i>Qingjie Fuzheng</i> Granules alleviates 5-fluorouracil-induced skeletal muscle injury in tumor-bearing mice by inhibiting mitochondria-dependent apoptosis and activating the AMPK-PGC-1α pathway]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Zhao J, Peng J, Lin M, Zhu X, Huang B, Lin J.   +5 more
europepmc   +1 more source