نتایج جستجو برای: coal reclamation
تعداد نتایج: 35471 فیلتر نتایج به سال:
Objective of the study is to research peculiarities phytogenic fields formation natural and artificial plantations shrub ruderal vegetation on coal mining waste heaps within Novovolynsk area (Ukraine). The biometric analysis growth tailings has been carried out applying forest inventory methodology, which involves laying temporary experimental areas, measuring diameter tree species at a height ...
The growing concern about the effectiveness of reclamation strategies has motivated the evaluation of soil properties following reclamation. Recovery of belowground microbial community is important for reclamation success, however, the response of soil bacterial communities to reclamation has not been well understood. In this study, PCR-based 454 pyrosequencing was applied to compare bacterial ...
High contents of soluble salts accumulated in a soil can significantly decrease the value and productivity of agricultural lands. Present recommendations for reclamation are usually based only on relatively simple and often empirical relations. In this paper we give a brief overview of many unique physical and chemical factors important to reclamation contained in the one-dimensional multicompo...
Mining in general, and particularly mining for energy resources such as coal lignite, results massive impacts on the surrounding landscape ecosystems. Post-mining reclamation that takes account of disturbed ecosystem services requires a research approach links impact to functions service potentials. The method used this paper combines Driving Forces–Pressures–State–Impact–Response (DPSIR) frame...
در این پژوهش، ساخت ترکیب بین فلزی coal نانوساختار و نانوکامپوزیت های coal/al2o3 با درصدهای مختلف از ذرات تقویت کننده به روش آلیاژسازی مکانیکی مورد بررسی قرار گرفت. تغییرات فازی و مطالعات ریزساختاری به وسیله آزمون های پراش پرتو ایکس (xrd)، میکروسکوپ الکترونی روبشی (sem)، میکروسکوپ الکترونی عبوری (tem) و آنالیز حرارتی (dta) ارزیابی شد. نتایج نشان داد که آلیاژسازی مکانیکی مخلوط پودری co50al50 موجب...
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