Results 111 to 120 of about 48,608 (309)

Rock dynamic strength prediction in cold regions using optimized hybrid algorithmic models

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
Predicting the dynamic mechanical characteristics of rocks during freeze–thaw cycles (FTC) is crucial for comprehending the damage process of FTC and averting disasters in rock engineering in cold climates.
You Lv, Yanjun Shen, Anlin Zhang, Li Ren, Jing Xie, Zetian Zhang, Zhilong Zhang, Lu An, Junlong Sun, Zhiwei Yan, Ou Mi   +10 more
doaj   +1 more source

Experimental and numerical studies on propagation behavior between hydraulic fractures and pre-existing fractures under prepulse combined hydraulic fracturing

Journal of Rock Mechanics and Geotechnical Engineering
Prepulse combined hydraulic fracturing facilitates the development of fracture networks by integrating prepulse hydraulic loading with conventional hydraulic fracturing.
Chao Wei, Liyuan Yu, Shentao Geng, Zichen Yuan, Yubo Wang   +4 more
doaj   +1 more source

Investigation of the health effects on workers exposed to respirable crystalline silica during outdoor and underground construction projects. [PDF]

Exp Ther Med, 2020
Keramydas D, Bakakos P, Alchanatis M, Papalexis P, Konstantakopoulos I, Tavernaraki K, Dracopoulos V, Papadakis A, Pantazi E, Chelidonis G, Chaidoutis E, Constantinidis TC, Tsitsimpikou C, Kavantzas N, Patsouris E, Tsarouhas K, Spandidos DA, Lazaris AC.   +17 more
europepmc   +1 more source

What drives animal responses to high severity fire? The role of functional traits

Biological Reviews, EarlyView.
ABSTRACT Fire regimes are changing worldwide, with increases in the frequency, extent, and severity of fires posing growing risks to biodiversity. Fire severity – the degree of habitat alteration following fire – strongly influences both immediate survival and long‐term recovery of fauna.
Grace A. Vielleux, Trent D. Penman, Victoria A. Reynolds, Matthew H. Swan   +3 more
wiley   +1 more source

Radon Exposures of Miners at Small Underground Construction Sites in Old Mining: Recommendations to Improve Radiation Protection Measures by the Saxon Radiation Protection Authority. [PDF]

Health Phys, 2020
Dehnert J.
europepmc   +1 more source

Underground siting of CANDU power stations

, 1979
Ontario Hydro is currently investigating the feasibility of constructing an underground CANDU nuclear power station. Two underground concepts are being examined: deep rock burial with reactor units located in deep hard rock caverns and cut-and-cover ...
Oberth, RC, Lee, CF
core  

Green Innovation and Firm Efficiency: The Role of Institutional Quality in Italian High‐Tech Manufacturing Sectors

Business Strategy and the Environment, EarlyView.
ABSTRACT The aim of this research is to verify whether institutional quality affects the relationship between green innovation and firm efficiency within the high‐tech manufacturing sectors. To estimate jointly the parameters of a stochastic frontier and the coefficients of a model explaining technical inefficiency, we employed the one‐step estimation ...
Mariarosaria Agostino, Sandro Rondinella, Marianna Succurro   +2 more
wiley   +1 more source

Study on the mechanical properties of multi-walled carbon nanotubes-basalt fiber reinforced lunar soil simulant

矿业科学学报
The utilization of in-situ lunar resources has become the core path for the construction of lunar scientific research stations. This paper adds multi-walled cabon nanotbes (MWCNTs) and basalt fibers (BF) into basalt-simulated lunar soil to study the ...
MA Qinyong, YANG Jinhui, ZHANG Bobo
doaj   +1 more source

Lisbon's underground construction

Geotecnia, 1976
 Enlargement project of the present network (12 to 27 km). Crossed soils types on 1st phase of the works and galleries and constructed stations types. Correspondent construction phases and cost of works, referring to the 1st of July, 1973.
openaire   +1 more source

A Systemic Model for Understanding Business Interactions With Biodiversity and Ecosystems

Business Strategy and the Environment, EarlyView.
ABSTRACT Biodiversity loss and ecosystem degradation represent critical threats to human well‐being and economic resilience, challenging businesses to understand and manage their interdependence with natural systems. This study develops a systemic framework—the BioModel—that elucidates the reciprocal relationship between businesses, biodiversity, and ...
Lino Cinquini, Giacomo Pigatto, Andrea Tenucci   +2 more
wiley   +1 more source