Results 201 to 210 of about 3,819,291 (249)

A Geometric Characterization of Steady Laminar Flow

Communications on Pure and Applied Mathematics, EarlyView.
ABSTRACT We study the steady states of the Euler equations on the periodic channel or annulus. We show that if these flows are laminar (layered by closed non‐contractible streamlines which foliate the domain), then they must be either parallel or circular flows.
Theodore D. Drivas, Marc Nualart
wiley   +1 more source

Generation Mechanism and LWD-Based Identification Methods for Highly Fractured Shale: A Case Study of Wufeng-Longmaxi Formations, Sichuan Basin. [PDF]

ACS Omega
Qiu X, Shi W, He C, Wang T, He H, Tan P, Ye X, Wei W, Feng X, Jiao E.   +9 more
europepmc   +1 more source

CSR Sustainability Reporting and Enterprise Value: The Moderating Role of Regulatory Quality in the European Policy Landscape

Corporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT The study looks into the relationship between the extent of CSR Sustainability Reporting and Enterprise Value (EV) among European listed companies. The introduction of the Corporate Sustainability Reporting Directive (CSRD) 2022/2464/EU and the European Sustainability Reporting Standards (ESRS) has significantly heightened the demand for ...
Saraò Chiara Pia, Trecca Antonietta, Favino Christian, Corvino Antonio   +3 more
wiley   +1 more source

Microscopic Mechanism of Impact Sensitivity in Typical Energetic Materials: From Electronic Structure to Vibration Characteristics. [PDF]

Int J Mol Sci
Xiang Y, Zhong J, Guo Y, Guo Z, Jin B.
europepmc   +1 more source

Edge Fluid Turbulence Simulations of Stellarators With GRILLIX

Contributions to Plasma Physics, EarlyView.
ABSTRACT The edge fluid turbulence code GRILLIX has recently been extended from axisymmetric tokamak geometries to support 3D stellarator configurations. Following successful proof‐of‐principle simulations published in Stegmeir et al., we present here a comprehensive simulation of the Wendelstein 7‐AS stellarator.
Andreas Stegmeir, Christoph Pitzal, Barnabas Csillag, Miguel Madeira, Marion Finkbeiner   +4 more
wiley   +1 more source

Study on the Variation Characteristics and Laws of Hole Formation in Coal-Rock Masses under HPWJ Impact Fracturing. [PDF]

ACS Omega
Xu S, Zhu Y, Liu S, Guo L, Zhang J, Xin Y, Zhang X.   +6 more
europepmc   +1 more source

Real‐time lithology identification while drilling based on drill cuttings image analysis with ensemble learning

Deep Underground Science and Engineering, EarlyView.
A lithology identification while drilling method was developed, integrating an automated cuttings sampling system, a smart drilling rig, and an ensemble learning model. Underground trials achieved 97.42% accuracy in real‐time identification of cuttings lithology and composition, enhancing hazard management and supporting unmanned drilling technology in
Kun Li, Ting Ren, Ningping Yao, Jon Roberts, Haitao Song, Zhongbei Li, Xueqiu He, Liang Zhao   +7 more
wiley   +1 more source

Study on the failure mechanism and cutting efficiency of rebar in linear cutting based on the finite-discrete element method. [PDF]

Sci Rep
Yi X, Wei Y, Chen J, Wang T.
europepmc   +1 more source

A rock brittleness index based on the postpeak energy release rate and damage surface characteristics for brittle hard rock

Deep Underground Science and Engineering, EarlyView.
This study examines energy evolution in rock rupture via triaxial direct shear tests, exploring the impact of confining pressure and temperature on fracture surface randomness. A novel energy‐based brittleness index is proposed, validated experimentally, and compared with existing methods for reliability and accuracy.
Biao Wang, Zaobao Liu, Jing Xue, Bo Lu, Wei Zeng, Dengke Zhang   +5 more
wiley   +1 more source

Investigation of CO₂ Mineralization under Dynamic Conditions in Carbonate Formations. [PDF]

ACS Omega
Khan A, Alafnan S, Raza A, Mahmoud M.
europepmc   +1 more source