Results 21 to 30 of about 15,532 (257)

Granite outcrops as possible havens for biodiversity in arid land [PDF]

open access: yesBiodiversity Data Journal
Little is known about granite outcrops in arid regions. The current study sought to determine if granite outcrops generate wetter islands compared to their arid surroundings.
Mohammed Shakdofa   +2 more
doaj   +3 more sources

The Orivesi granite batholith, Southern Central Finland - characteristics and emplacement [PDF]

open access: yesBulletin of the Geological Society of Finland, 1996
The Orivesi granite batholith is situated in an E-W trending belt of granite intrusions along the southern margin of the Central Finland Granitoid Complex (CFGC).
O. Selonen, C. Ehlers
doaj   +1 more source

Effect of weakening characteristics of mechanical properties of granite under the action of liquid nitrogen

open access: yesFrontiers in Ecology and Evolution, 2023
Liquid nitrogen fracturing and hot dry rock geothermal development are both emerging technologies in the field of energy. However, during the extraction of geothermal energy, it can cause the evolution of geological fractures, leading to the diffusion of
Linchao Wang   +7 more
doaj   +1 more source

The effects of temperature on mechanical properties of rocks [PDF]

open access: yesInternational Journal of Mining and Geo-Engineering, 2020
In a natural condition, temperature variations and phase transition of pore water are the two most effective factors on the mechanical properties of rocks.
Jabbar Ashrafi   +4 more
doaj   +1 more source

Linear thermal expansion of the building stone from plutonic massifs of the Vardar zone of Serbia [PDF]

open access: yesTehnika, 2020
Thermal properties of the building stone used for cladding and flooring, especially in exteriors, are significant for durability and lifespan of buildings' surfaces covered with it, but also their aesthetic properties in the sense of integrity.
Kurešević Lidja M.   +2 more
doaj   +1 more source

Permeability of granite from a shallow buried mountain pipe gallery tunnel under unloading confining pressure

open access: yesDeep Underground Science and Engineering, EarlyView.
Triaxial compression tests under unloading confining pressure conditions were conducted to systematically analyze the permeability behavior of granite retrieved from the different classification surrounding rocks. Abstract The rock mass within mountain tunnels undergoes complex changes in permeability, strength, and deformation during tunneling ...
Xiaoyan Zhang   +4 more
wiley   +1 more source

Critical expansion points: Mechanical signs of surrounding rock instability

open access: yesDeep Underground Science and Engineering, EarlyView.
This study proposes the Rock Bearing‐Expansion Model (RockBEM) with critical expansion points (CEPs) to quantify post‐peak damage stages in deep‐buried rock masses via plane strain compression test (PSCT). CEP hysteresis&interval ratios reveal bearing performance dynamics and failure severity, advancing mechanistic insights into deep underground rock ...
Jiaqi Wen   +4 more
wiley   +1 more source

Exploring wave propagation behaviors in rock: A grain‐based perspective on mineral structures

open access: yesDeep Underground Science and Engineering, EarlyView.
This study investigates wave propagation in rock at the grain scale using a grain‐based model, revealing that mineral elastic modulus significantly influences wave attenuation while grain size and distribution have limited effects. A novel peak particle velocity attenuation prediction model is proposed and validated for grain‐scale wave propagation ...
Zhiyi Liao   +3 more
wiley   +1 more source

Study of the influence of crushing and screening plant operation scheme on the quantitative and qualitative indicators of aggregates for concrete

open access: yesТехнічна інженерія
The state of the crushed stone market determines the release of the most liquid fractions, which quite often requires changes to the technological scheme of crushing and screening plants (CSP). Deviation from the working (main) technological scheme leads
O.M. Tolkach   +3 more
doaj   +1 more source

Granite Guardian

open access: yesCoRR
We introduce the Granite Guardian models, a suite of safeguards designed to provide risk detection for prompts and responses, enabling safe and responsible use in combination with any large language model (LLM). These models offer comprehensive coverage across multiple risk dimensions, including social bias, profanity, violence, sexual content ...
Inkit Padhi   +22 more
openaire   +2 more sources

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