Results 41 to 50 of about 71 (68)

[Experimental study on the effect of three-dimensional porous structures on the vascularization rate of artificial dermis]. [PDF]

open access: yesZhonghua Shao Shang Za Zhi, 2021
Tan RW   +11 more
europepmc   +1 more source

Mechanisms of carbon distribution and stability in the photosynthetic processes of plant-soil systems influenced by arbuscular mycorrhizal fungi during reclamation of mining areas [PDF]

open access: yes
Inoculation of Arbuscular Mycorrhizal Fungi (AMF) combined with vegetation restoration has become a key reclamation technology for ecological restoration in mining subsidence.
Dongdong WANG   +3 more
core   +1 more source

Clinical characteristics of pulmonary alveolar proteinosis. [PDF]

open access: yesZhong Nan Da Xue Xue Bao Yi Xue Ban, 2021
Long Y   +5 more
europepmc   +1 more source

高潜水位矿区不同复垦方式下土壤热导率及其影响因素

open access: yesShuitu Baochi Xuebao, 2017
以东部高潜水位采煤塌陷耕地为研究对象,研究挖深垫浅复垦、充填复垦、预复垦3种复垦方式下土壤热导率的分布及原因。在3种复垦方式典型样地上开挖剖面,分别取0—20,20—40,40—60 cm土层土样,经试验分析观测土壤热导率及相关物理指标。结果表明:(1)复垦方式、剖面层次和二者交互作用均是使热导率产生显著差别的因素 ...
闵祥宇, 李新举
doaj  

Numerical simulation of plant root system stress response to coal mining disturbances in semiarid mining areas [PDF]

open access: yes
Root damage is a critical ecological issue affecting vegetation in semi-arid underground coal mining areas. The mechanisms and influencing factors of root stress damage induced by stress changes in the root-soil layer due to mining-induced rock mass ...
Chuangang GONG   +8 more
core   +1 more source

Ecological cumulative effects of surface mining areas in semi-arid grasslands: Evaluation model and application [PDF]

open access: yes
The research objectives are to reveal the eco-environmental quality of surface mining areas in semi-arid grasslands, separate the ecological cumulative effects of anthropogenic activities and examine their evolving trends.
He REN   +4 more
core   +1 more source

Foundation and technology of coordinated utilization of bulk solid waste ‘Three modernizations’ in coal power base [PDF]

open access: yes
The construction of 14 large-scale coal bases and 89 demonstration bases for the comprehensive utilization of bulk solid waste in China marks that the utilization of bulk solid waste in mining areas has been incorporated into the national strategic ...
Denghong CHEN   +8 more
core   +1 more source

不同降雨历时下采煤塌陷区土壤优先流特征

open access: yesShuitu Baochi Xuebao
目的 为研究采煤塌陷区裂缝引发的优先流特征,为科学合理地开展矿区水资源管理及生态治理实践工作提供支撑。方法 在神府-东胜煤田采煤塌陷区选取3条同一宽度(3 cm)的裂缝,开展相同降雨强度、不同降雨历时的染色示踪试验。采用Adobe Photoshop 2020、Image Pro Plus 6.0、SketchUp Pro 2019、Auto CAD 2019等处理软件,分析不同降雨历时下的裂缝优先流特征。结果 1) 神府-东胜采煤塌陷区优先流发生区域的土壤水分体积分数、孔隙度 ...
郭巧玲   +4 more
doaj  

黑沙蒿直根的材料力学特性研究

open access: yesShuitu Baochi Xuebao, 2017
以鄂尔多斯采煤塌陷区植物的优势种之一黑沙蒿为研究对象,采用伺服式强力机研究其直根的材料力学特性。结果表明:在1~5 mm径级范围内抗拉力、抗折力与根径均呈幂函数正相关,抗拉强度、抗折强度与根径呈幂函数负相关。在拉力和折力分别作用下,直根均表现出弹塑性变形特征,抗拉极限弹性力大于抗折极限弹性力,轴向弹性变形小于径向弹性变形。直根承受径向折力的σ~ε(应力—应变)曲线基本为下凹型,承受轴向拉力时的σ~ε曲线基本为上凸型,对于两种受力形式,极限强度均随根径的增大而减小,极限应变与根径无相关性。1~5 ...
李雪松, 刘, 王, 刘嘉伟, 张, 李
doaj  

Internal deformation characteristics and full section monitoring for extremely thick loose layers under mining conditions [PDF]

open access: yes
Mining subsidence represents the primary environmental geological challenge in coal mining, particularly at high water level mining areas in the eastern regions of China.
Pingsong ZHANG   +3 more
core   +1 more source

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