Results 91 to 100 of about 477,243 (287)
Deep Underground Science and Engineering, EarlyView.This paper investigates the high‐pressure water jet‐pick combined rock‐breaking mode (HPC), which employs high‐pressure water jets to precut grooves on both sides of the picks. The rock‐breaking patterns and performance of the HPC method are obtained, and the auxiliary rock‐breaking mechanism of water jet grooving is revealed.
Jingjing Lu +6 more
wiley +1 more source
Deep Underground Science and Engineering, EarlyView.A novel cavity contraction solution and multilayer shaft wall model were developed to analyze deep shaft stability, considering rock viscosity, support structures, and water pressure, with successful validation through a Hulusu Coal Mine case study.
Bin Chen +5 more
wiley +1 more source
EPJ Web of Conferences, 2013 We present a short overview of the main aspects of the Higgs Effective Lagrangian. In particular we highlight a strategy to determine whether the electroweak symmetry breaking sector is controlled by a strong or a weak dynamics.
Ghezzi Margherita
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Generalized Poincaré algebras and Lovelock–Cartan gravity theory
Physics Letters B, 2015 We show that the Lagrangian for Lovelock–Cartan gravity theory can be reformulated as an action which leads to General Relativity in a certain limit. In odd dimensions the Lagrangian leads to a Chern–Simons theory invariant under the generalized Poincaré
P.K. Concha +3 more
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Earthquake Engineering &Structural Dynamics, EarlyView.ABSTRACT This paper presents a gradient‐based optimization framework for the preliminary seismic design of alternative isolation systems and fluid viscous dampers in vertically irregular 2D shear frames. The proposed method simultaneously optimizes the number, locations, and properties of isolation layers together with viscous damper coefficients ...
Ghazal Alwilly, Oren Lavan
wiley +1 more source
Nuclear Physics B, 2015 It is known, though not commonly, that one can describe fermions using a second order in derivatives Lagrangian instead of the first order Dirac one.
Johnny Espin, Kirill Krasnov
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Deformations of adjoint orbits for semisimple Lie algebras and Lagrangian submanifolds [PDF]
, 2021 Jhoan Báez +3 more
openalex +1 more source
Energy Science &Engineering, EarlyView.ABSTRACT The aim of this study is to examine the intricate dynamics involved in the production, movement, and settling of dust particles, as well as the interconnected mechanisms at play during various processes within fully automated coal mining fronts.
Yibo Li +5 more
wiley +1 more source
Lagrangian Modelling and Motion Stability of Synchronous Generator-based Power Systems
CSEE Journal of Power and Energy SystemsThis paper proposes to analyze the motion stability of synchronous generator-based power systems using a Lagrangian model derived in the configuration space of generalized position and speed.
Feng Ji, Lu Gao, Chang Lin
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