Results 1 to 10 of about 435,276 (218)

NORTH-EASTERN SHARED RESEARCH FACILITIES OF NEISRI FEB RAS: EQUIPMENT AND DIRECTIONS OF RESEARCH

open access: yesГеодинамика и тектонофизика, 2022
The activity of the North-Eastern Shared Research Facilities of the Shilo North-East Interdisciplinary Scientific Research Institute, Far Eastern Branch of the Russian Academy of Sciences (NEISRI FEB RAS) is aimed at conducting analytical studies of ...
O. T. Sotskaya   +2 more
doaj   +1 more source

Clustered stone forest in Pu Dou Chun (Yunnan, China)

open access: yesActa Carsologica, 2022
One of the unique examples of the development of subsoil karren into a stone forest on the varied geological bedrock of the Lunan surface is revealed to us.
Martin Knez, Hong Liu, Tadej Slabe
doaj   +1 more source

Optimization of rock destruction parameters when drilling wells

open access: yesЗбірник наукових праць: Серія: Галузеве машинобудування, будівництво, 2022
Mathematical models of optimization of rock destruction process during well drilling are considered. In most models, the criterion for optimization is the speed of mechanical drilling.
Oleksandr Polituchyi
doaj   +1 more source

Methodology for determination of petrographic structures using the MIU-5M device

open access: yesVestnik MGTU, 2022
The authors develop a statistical method for determining the structures of rocks. A mathematically rigorous definition of the petrographic structure through the probabilities of binary intergranular contacts is proposed.
Zakharova A. A.   +3 more
doaj   +1 more source

Study on Changes in Physical and Mechanical Properties and Integrity Decay of Sandstone Subjected to Freeze–Thaw Cycling

open access: yesApplied Sciences, 2023
To investigate the effects of long-term freeze–thaw cycles on the physical and mechanical properties as well as the attenuation trend of rocks, this study conducted saturated freeze–thaw tests on coarse sandstone and fine sandstone samples collected from
Liping Wang   +4 more
doaj   +1 more source

La exclusión de artistas mujeres en los festivales: políticas de género y relevamientos cuantitativos en el ámbito musical profesional de la Argentina (2017-2019)

open access: yesResonancias, 2021
At the end of 2017, discomforts among women musicians were publicly manifested due to the low presence of women in certain emblematic musical events. In a short time, this complaint became a shared claim, a focused questioning through which a series of ...
Mercedes Liska
doaj   +1 more source

Experimental Study on the Thermal Infrared Spectral Variation of Fractured Rock

open access: yesRemote Sensing, 2021
Previous studies have shown that thermal infrared radiation (TIR) anomalies occur in the vicinity of fractures that form when a rock is loaded to failure. Different types of fracturing modes correspond to different TIR anomaly trends.
Jianwei Huang   +6 more
doaj   +1 more source

Development and Validation of Universal 3D Blast Fragmentation Model

open access: yesApplied Sciences, 2023
The dominant technology in hard rock mining is drilling and blasting; therefore, the importance of fragment size estimation is an essential problem in the mining industry.
Veljko Lapčević   +3 more
doaj   +1 more source

Crisis contracultural y rock en la Ciudad de México: relaciones de producción, reproducción viva y sociabilidad. 1972-1977

open access: yesHistoria y Sociedad, 2020
Este artículo reconstruye un periodo poco explorado de la historia musical en México. El texto analiza la transformación de las relaciones de producción de la industria musical en la capital en el curso de descomposición de la contracultura, de ...
José Rodrigo Moreno-Elizondo
doaj   +1 more source

Experimental study of the influence of structural planes on the mechanical properties of sandstone specimens under cyclic dynamic disturbance

open access: yesEnergy Science & Engineering, 2020
Discontinuity‐controlled slopes constitute potentially fatal risks during exploitation activities in open‐pit mines and severely threaten the safe mining of collieries. To investigate the dynamic mechanical properties of rock with structural planes under
Han Du   +3 more
doaj   +1 more source

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