Results 91 to 100 of about 59,068,638 (241)

Thermal Conduction in Laser‐Driven Tin Plasmas and the Sensitivity of Plasma Properties to the Flux Limiter

open access: yesContributions to Plasma Physics, EarlyView.
ABSTRACT We study the role of thermal conduction in laser‐produced tin plasma sources of extreme ultraviolet (EUV) light using radiation‐hydrodynamic simulations. Adopting the flux‐limited Spitzer–Härm approach, we investigate the sensitivity of the electron temperature, electron density, net in‐band emissivity, and conversion efficiency to the choice ...
S. Aggarwal   +3 more
wiley   +1 more source

Combination of CO 2 ${\text{CO}}_{2}$ storage and geothermal energy production in porous and fractured superhot geothermal systems

open access: yesDeep Underground Science and Engineering, EarlyView.
The graphical abstract depicts the workflow for porous‐ and fractured‐media simulations, where stochastically generated discrete natural fractures are required for the fracture‐media simulation. Abstract CO 2 ${\text{CO}}_{2}$ leakage is one of the main risks and barriers to geologic carbon storage. However, under the high‐temperature and high‐pressure
Christoph Scherounigg   +3 more
wiley   +1 more source

Multi‐factor coupling effects in hydraulic fracturing of laminated shale: Experimental insights and physics‐informed neural network‐driven optimization

open access: yesDeep Underground Science and Engineering, EarlyView.
This study establishes a multi‐factor coupling framework for predicting breakdown pressure in laminated shale by integrating experimental hydraulic fracturing tests, physics‐informed neural networks (PINNs), and Sobol sensitivity analysis. It reveals how differential stress, the bedding dip angle, and the injection rate interact to influence fracture ...
Tao Wang   +6 more
wiley   +1 more source

Delta Elementary School; Sixth Grade; 1928-1929

open access: yes, 1928
Sixth Grade Class: First row: Ruby Taylor?, Roe Ann Sampson, Mary Daly, Cleo Killpack, Minnie Henrie, Pearl Warnick. Second row: Mrs. Deta P. Neeley, Marion Folsom, Pearl Steele, Rex Beckstead, Thora Bunker, Clair Porter, Jay Anderson.

core  

Modeling proppant transport and settling in a 3D propagating fracture

open access: yesDeep Underground Science and Engineering, EarlyView.
A versatile multiphysics tool is presented for simulating the complex processes involved in hydraulic fracturing treatments. The model couples fracture opening and propagation, variable‐density slurry flow, and proppant particle transport within the multiphysics object‐oriented simulation environment framework, based on two‐phase mixture equations and ...
Robert Egert   +2 more
wiley   +1 more source

Elementary Steps of Energy Conversion in Strongly Correlated Systems: Beyond Single Quasiparticles and Rigid Bands

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This article reviews the fundamental consequences of strong correlations on excitations and elementary steps of energy conversion leading to new opportunities to control energy conversion. Examples include friction at surfaces, thermal transport, and photovoltaic energy conversion.
Vasily Moshnyaga   +14 more
wiley   +1 more source

Contribution to the design of continuous -time Sigma - Delta Modulators based on time delay elements [PDF]

open access: yes, 2008
The research carried out in this thesis is focused in the development of a new class of data converters for digital radio. There are two main architectures for communication receivers which perform a digital demodulation.
Prefasi Sen, Enrique José   +1 more
core   +1 more source

On supersymmetric Dirac delta interactions [PDF]

open access: yes, 2014
[EN] In this paper we construct N = 2 supersymmetric (SUSY) quantum mechanics over several configurations of Dirac- δ potentials from one single delta to a Dirac “comb ”.
Mateos Guilarte, Juan María   +2 more
core  

Low‐Dimensional Materials and Van Der Waals Heterostructures for Energy Application: A Comprehensive Review

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Low‐dimensional materials (0D, 1D, and 2D) exhibit unique electronic and physicochemical properties, enabling advanced nanoelectronic and optoelectronic devices. Mixed‐dimensional heterostructures combine these materials to enhance functionality.
Qaisar Alam   +3 more
wiley   +1 more source

Energía de Casimir en sistemas definidos con potencial delta de Dirac

open access: yes
La energía de vacío es uno de los fenómenos que da lugar a fluctuaciones cuánticas de campos. El objetivo de este trabajo es calcular el efecto Casimir, fenómeno producido por la interacción de las fluctuaciones cuánticas con los cuerpos de un sistema.Por un lado, veremos el caso de dos placas paralelas tanto neutras como perfectamente conductoras, las
Salazar Mendieta, Ariadna   +1 more
openaire   +1 more source

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