Results 171 to 180 of about 146,299 (379)

MinPlotX: A powerful tool for formula recalculation, visualization, and comparison of large mineral compositional datasets

open access: yesMineralogia
MinPlotX is an open-source software for mineral formula recalculation and compositional plotting providing an easy-to-use stand-alone graphical user interface (GUI) as well as an advanced programming interface (API).
Walters Jesse B., Gies Nils B.
doaj   +1 more source

Stress Relief Effects of Roof‐Cutting at the Junction Zone Between Gob‐Side Entry and Stope Within Extra‐Thick Coal Seams

open access: yesEnergy Science &Engineering, EarlyView.
The analytical model of severe ground pressure in JZGS: (a) Overlying rock strata structure above the stope and gob‐side entry; (b) in situ monitoring of advanced and lateral abutment pressures. Many studies have demonstrated that the overlying strata above the stope and gob‐side entry fracture and collapse at specific angles [28‐30], forming broken ...
Wenrui He, Fulian He, Wenli Zhai
wiley   +1 more source

Workshop on the Early Earth: The Interval from Accretion to the Older Archean [PDF]

open access: yes
Presentation abstracts are compiled which address various issues in Earth developmental processes in the first one hundred million years. The session topics included: accretion of the Earth (processes accompanying immediately following the accretion ...
Ashwal, L. D., Burke, K.
core   +1 more source

Mechanism of Roof‐Cutting by Densely Drilled Holes in Gob‐Side Entry Retaining and Its Main Influencing Factors

open access: yesEnergy Science &Engineering, EarlyView.
ABSTRACT Roof‐cutting by densely drilled holes (RCDDH) has been widely adopted in many coal mines across China as an innovative roof‐cutting technique. However, research on its underlying mechanism and key parameters remains limited, particularly regarding the failure mechanisms of the drilled holes.
Shaowei Liu   +6 more
wiley   +1 more source

Petrocrafical and mineralogical features of ultramafits from Kirelsk fragment of Kansk greenstone belt (NW of the East Sayan)

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2017
Ultramfits of the studied territory are perspective on detection of Cu-Ni with platinum-group elements deposits that causes the relevance of their research. The main aim of the study.
Aleksey Ivanovich Chernyshov   +2 more
doaj  

Long‐Term Performance Analysis of Foundation Pile and Vertical Borehole Heat Exchangers for Ground Source Heat Pump Systems in Cold Climates

open access: yesEnergy Science &Engineering, EarlyView.
ABSTRACT Ground source heat pump systems (GSHPs) have received considerable interest from researchers for the decarbonization of energy use in buildings owing to their higher efficiency. The ground heat exchanger (GHE) is the primary component of a GSHP. Vertical borehole heat exchangers (VBHE) and foundation piles (FP) are common GHEs that researchers
Philip Adebayo   +5 more
wiley   +1 more source

Quantitative Identification and Distribution Pattern of Macrolithotype of Coal in Deep Coal Seams of the Daji Block

open access: yesEnergy Science &Engineering, EarlyView.
ABSTRACT The construction of a logging response model for macrolithotypes in coal has been successfully completed. This model has enabled delineation of vertical and planar distribution patterns of coal macrolithotypes within the #5 and #8 coal seams of the Daji block, as well as to forecast the distribution of favorable reservoir conditions.
Wei Zhang   +5 more
wiley   +1 more source

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