Results 141 to 150 of about 16,115 (235)

Practical methodology for the design and management of instability in hard rock tunnels [PDF]

, 2019
Mickovski, Slobodan B., Pirie, Gordon
core   +2 more sources

Inventory of water storage types in the Blue Nile and Volta River Basins [PDF]

Water storage / River basins / Reservoirs / Ponds / Tanks / Groundwater / Soil moisture ...
Johnston, Robyn M., McCartney, Matthew
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Mercury Pollution Due to Small-Scale Gold Mining in the Philippines: An Economic Analysis [PDF]

The study reviews small-scale gold mining in the Philippines and assesses economically mercury pollution and other development problems of the industry.
Asirot, Jasminda, Israel, Danilo C.
core  

Dust distribution characteristics of the breathing zone in the walkway area of fully-mechanized mining face: a case study. [PDF]

Sci Rep
Zhang W, Tu Q, Xue S, Xing F, Xu X, Zhao Z, Li C.   +6 more
europepmc   +1 more source

THE TALE OF TWO TRAVERSES Innovation and Accumulation in the First Two Centuries of U.S. Economic Growth [PDF]

Both the macroeconomic and the microeconomic evidence from U. S. economy’s experience over the past two centuries leads to a view of technological change (broadly conceived) as having not been “neutral” in its effects upon growth. The specific meaning of
Paul A. David
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Market assessment of photovoltaic power systems for agricultural applications in Colombia [PDF]

The market potential for photovoltaic systems in the agricultural sector of Colombia is assessed. Consideration was given to over twenty specific livestock production, crop production, and rural services applications requiring less than 15 kW of power ...
Neyeloff, S., Steigelmann, W.
core   +1 more source

Evolution and dip effect of boundary spatial morphology of top-coal limit equilibrium zone in steeply dipping coal seam. [PDF]

Sci Rep
Wu X, Chi X, Lang D, Wu Y, Zhang Z, Chen S.   +5 more
europepmc   +1 more source

Working face status detection in coal mine based on YOLOv8-EST. [PDF]

Sci Rep
Wang H, Wu G, Yang Q, Huang Y, Lv Z, Yang J.   +5 more
europepmc   +1 more source

Optimization of drawing parameters based on top-coal flow law in thick-seam caving mining. [PDF]

Sci Rep
Wu S, Xu X, Wang J, Kong D, Wu G, Liu Q, Zuo Y.   +6 more
europepmc   +1 more source

Structural Change, Environment and Well-being: Interactions Between Production and Consumption Choices of the Rich and the Poor in Developing Countries [PDF]

Vulnerability to scarcity or to reduction of natural capital depends on defensive substitution possibilities that, in turn, are affected by the availability of other productive factors. However, in several developing countries asset distribution tends to
Angelo Antoci, Elisa Ticci, Paolo Russu
core