Results 301 to 310 of about 318,456 (400)

An introduction to geology : and its associate sciences mineralogy, fossil botany, and palaeontology

George Fleming Richardson, Thomas L. Wright   +1 more
openalex   +2 more sources

Geological and geotechnical challenges on the Great Dyke of Zimbabwe and their impact on hardrock pillar design

Deep Underground Science and Engineering, EarlyView.
The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza, Hendrik Grobler, Moshood Onifade, Manoj Khandelwal   +3 more
wiley   +1 more source

Karst-environments of the southeastern Yucatan Peninsula: Hotspots for modern freshwater microbialites. [PDF]

PLoS One
Yanez-Montalvo A, Águila B, de León-Lorenzana AS, Bayona A, Torrescano-Valle N, Popoca P, Falcón LI.   +6 more
europepmc   +1 more source

Nonsilting transport characteristics of coal slurry in a deep underground fluidization conveying pipeline under the action of a guide vane swirler

Deep Underground Science and Engineering, EarlyView.
Aiming at the scientific frontiers of in situ fluidized mining of deep resources, a deep coal fluidized pipeline lifting system based on hydraulic conveying has been proposed. To solve the issue of particle sedimentation of large particles in horizontal connection sections, a solution involving the installation of guide vane‐type swirlers in the ...
Jiusheng Bao, Shaodi Zhao, Yan Yin, Zhongbin Wang, Shuai Liu, Shirong Ge   +5 more
wiley   +1 more source

Publisher Correction: Diversities of chromite mineralization induced by chemo-thermal evolution of the mantle during subduction initiation. [PDF]

Nat Commun
Zhang PF, Zhou MF, Robinson PT, Malpas J, Yumul GP, Wang CY, Li J.   +6 more
europepmc   +1 more source

A Quantitative Mineralogical Classification of Igneous Rocks: Revised. Part I

, 1920
Albert Johannsen
openalex   +1 more source

Gels for CO2 geo‐storage and conformance control: A systemic review of behavior and performance

Deep Underground Science and Engineering, EarlyView.
This review provides a systemic evaluation of potential sealants used in CO2 subsurface storage practices. Critical analyses of how external factors like CO2, pH, brine salinity and hardness, rock mineralogy, pressure, temperature, and injectivity could affect the performance of different sealants are provided. Abstract Carbon capture and storage (CCS)
Funsho Afolabi, Iskandar Dzulkarnain, Sunil Kwon, Dmitriy A. Martyushev, Jang H. Lee, Shiferaw R. Jufar, Fahd Al‐Akbari   +6 more
wiley   +1 more source

Role of micropores within minerals in retardation of mass transfer by matrix diffusion and sorption in granitic rock. [PDF]

Heliyon
Yuguchi T, Sasao E, Hibara R, Murakami H, Ozaki Y.   +4 more
europepmc   +1 more source

Numerical investigation on the influence of mesoscopic deformation on contact area and hydraulic aperture to fracture seepage

Deep Underground Science and Engineering, EarlyView.
Fluid flow through a single fracture is commonly described by the cubic law. However, deviations from this model are expected because natural fracture surfaces are rough and in contact with each other in discrete regions. In this study, the interactions between fracture closure, contact area, and hydraulic characterization of mesoscopic‐scale rough ...
Chenghao Han, Yuanlin Bai, Weijie Zhang, Jicheng Zhang, Hongfa Ma, Weiye Li   +5 more
wiley   +1 more source

Dynamic Copper(I) and Silver(I) Complexes of Tri-tert-butyl-cyclotriphosphane. [PDF]

Chemistry
Grell T, Wonneberger P, Yufanyi DM, Lönnecke P, Hey-Hawkins E.   +4 more
europepmc   +1 more source