Results 71 to 80 of about 631,018 (337)
Relationship between Brittleness Index and Crack Initiation Stress Ratio for Different Rock Types
Advances in Civil Engineering, 2020 Brittleness and crack initiation stress (σci) are important rock mechanical properties and intrinsically related to rock deformation and failure. We establish the relationship between σci and uniaxial tensile strength (σt) based on the Griffith stress ...
Juyu Jiang +3 more
doaj +1 more source
Thulium anomalies and rare earth element patterns in meteorites and Earth: Nebular fractionation and the nugget effect [PDF]
, 2015 This study reports the bulk rare earth element (REEs, La-Lu) compositions of 41 chondrites, including 32 falls and 9 finds from carbonaceous (CI, CM, CO and CV), enstatite (EH and EL) and ordinary (H, L and LL) groups, as well as 2 enstatite achondrites (aubrite).
arxiv +1 more source
Adaptive Metamorphic Testing with Contextual Bandits [PDF]
Journal of Systems and Software (JSS) Vol. 165 (2020) 110574, 2019 Metamorphic Testing is a software testing paradigm which aims at using necessary properties of a system-under-test, called metamorphic relations, to either check its expected outputs, or to generate new test cases. Metamorphic Testing has been successful to test programs for which a full oracle is not available or to test programs for which there are ...
arxiv +1 more source
Deep Underground Science and Engineering, EarlyView.The Fobinso granitoids are granodiorites, while the Esuajah granitoids are granites based on their mineralogical composition. The granitoids are generally enriched in LILE and LREE than HFSE, MREE, and HREE, indicating mixing with crustal sources during their evolution.
Emmanuel D. Sunkari +2 more
wiley +1 more source
JGEET: Journal of Geoscience, Engineering, Environment and Technology, 2017 Basement reservoir is a reservoir that is located in the basement rock, comprised of either igneous rock or metamorphic rock that has secondary porosity, resulting in its capability to store oil and gas.
Hartawi Riskha +3 more
doaj +1 more source
Experimental and constitutive modeling investigations on marble in Jinping Underground Laboratory
Deep Underground Science and Engineering, EarlyView.The objective of this study is to reveal the underlying mechanisms behind the brittle‐ductile transition of the marble through a combination of experimental research and constitutive modeling. A series of triaxial compression and triaxial cyclic loading tests are conducted.
Susheng Wang +3 more
wiley +1 more source
Dizhi lixue xuebaoObjective Apatite is a common accessory mineral that is widely distributed in various rock types. Its U-Pb age, trace elements (particularly REE, Th, U, and Sr), and Sr-Nd isotopic compositions provide important information on its chronology and ...
YANG Yuqing +6 more
doaj +1 more source
Energy Science &Engineering, EarlyView.ABSTRACT Using a self‐developed supercritical carbon dioxide (CO2) soaking system, the damage mechanisms and cracking characteristics of coal due to supercritical CO2 under the coupling of high‐temperature, high‐pressure, water, and the seepage evolution law and failure mode of coal bodies were revealed.
Xiaoqiang Zhang +7 more
wiley +1 more source
Enhancement of impact heating in pressure-strengthened rocks in oblique impacts [PDF]
, 2019 Shock-induced metamorphism in meteorites informs us about the collisional environment and history of our solar system. Recently the importance of material strength in impact heating was reported from head-on impact simulations. Here, we perform three-dimensional oblique impact simulations, and confirm the additional heating due to material strength for
arxiv +1 more source
Metamorphism of rocks and rock flowage
Geological Society of America Bulletin, 1897 At head of title: Bulletin of the Geological Society of America, vol. 9, May 19, 1898. ; Caption-title. ; Mode of access: Internet.
openaire +3 more sources