Results 141 to 150 of about 164,387 (261)

A novel construction approach for the pore structure model principally focuses on the controllable roundness of rock particles

Deep Underground Science and Engineering, EarlyView.
Particle rounding effects comparison of different methods: (a), (b), and (c) are the rounding results using the B‐spline curve method with different R; (d), (e), and (f) are the results of vertex rounding substitution method with different rounding radii.
Jiabin Dong, Ning Yang, Yi Jin, Ying Wu, Dandan Liu, Junling Zheng, Jingyan Zhao   +6 more
wiley   +1 more source

Prediction Models for Radiological Characterization of Natural Aggregates Based on Chemical Composition and Mineralogy. [PDF]

Materials (Basel)
Caño A, Alonso MDM, Pachón-Montaño A, Marzal Q, Hernáiz G, Sousa L, Suárez-Navarro JA.   +6 more
europepmc   +1 more source

Characterization of the permeability evolution of hard and soft rocks under hydro‐mechanical coupling conditions

Deep Underground Science and Engineering, EarlyView.
The permeability variation of rocks during complete stress–strain processes was investigated. A mathematical model describing the influence of rock damage on permeability was constructed. The permeability–stress relationship between soft rock and hard rock was proposed.
Zhen Huang, Jian Yu, Yun Wu, Cong Gong, Xiaozhao Li, Kui Zhao, Dickson Moyo   +6 more
wiley   +1 more source

Automated Mineralogy Analysis of the Apollo 17 73002 Continuous Core Thin Sections Using QEMSCAN Mapping Techniques. [PDF]

J Geophys Res Planets
Bell SK, Joy KH, Nottingham M, Tartèse R, Jones RH, Kent JJ, Shearer CK, ANGSA science team.   +7 more
europepmc   +1 more source

Hydrogen sulfide in underground hydrogen storage sites: Implication of thermochemical sulfate reduction

Deep Underground Science and Engineering, EarlyView.
A one‐dimensional diffusion‐based mass transport model was built using PHREEQC to highlight the potential challenges posed by thermochemical sulfate reduction (TSR) in depleted gas fields. The results obtained indicated that the presence of iron minerals (pyrite and hematite) is crucial for H2S generation through TSR reactions.
Sadegh Ahmadpour, Raoof Gholami
wiley   +1 more source

Low-Temperature Aqueous Alteration of Chondrites. [PDF]

Space Sci Rev
Lee MR, Alexander CMO, Bischoff A, Brearley AJ, Dobrică E, Fujiya W, Le Guillou C, King AJ, van Kooten E, Krot AN, Leitner J, Marrocchi Y, Patzek M, Petaev MI, Piani L, Pravdivtseva O, Remusat L, Telus M, Tsuchiyama A, Vacher LG.   +19 more
europepmc   +1 more source

Field investigation of grout propagation within a caving mass under flowing water conditions in a metal mine

Deep Underground Science and Engineering, EarlyView.
This study investigated the characteristics of two‐liquid slurry propagation filling of underground concealed spaces under flowing water conditions in metal mines using on‐site engineering tests. We proposed four different grout stratigraphic classifications, investigated four main factors affecting grout propagation, and summarized five different ...
Baofu Wu, Guilei Han, Zhiqi Wang, Jiabin Shi, Hongjiang You, Asrullah   +5 more
wiley   +1 more source

Chemical fractions of potassium in arid region calcareous soils: The impact of microclimates and physiographic variability. [PDF]

PLoS One
Poozesh Shirazi M, Enjavinezhad SM, Moosavi AA.   +2 more
europepmc   +1 more source

Study on the diffusion and migration law of CO2 sequestrated in abandoned coal mine goaf

Deep Underground Science and Engineering, EarlyView.
The goaf of an abandoned coal mine, endowed with expansive fracture spaces and an abundance of residual coal, can be capable of sequestrating substantial quantities of CO2. The residual coal is the principal medium for the sequestration of CO2 in the form of adsorption and the amount of sequestration is considerable.
Haiyang Zhou, Yu Wu, Chunhui Liu, Haozhe Geng, Chenyu Yao   +4 more
wiley   +1 more source

Younger Dryas drought and IPO climate modulation during the Antarctic Cold Reversal in New Zealand. [PDF]

Nat Commun
Ohneiser C, Beltran C, Bollen M, Fougere D, Egli R.   +4 more
europepmc   +1 more source