Results 111 to 120 of about 2,483,850 (366)

Nil Clean Ideal [PDF]

open access: yesarXiv, 2017
Motivated by the concept of clean ideals, we introduce the notion of nil clean ideals of a ring. We define an ideal $I$ of a ring $R$ to be nil clean ideal if every element of $I$ can be written as a sum of an idempotent and a nilpotent element of $R$. In this article we discuss various properties of nil clean ideals.
arxiv  

Dirac Nodes and Quantized Thermal Hall Effect in the Mixed State of d-wave Superconductors

open access: yes, 2001
We consider the vortex state of d-wave superconductors in the clean limit. Within the linearized approximation the quasiparticle bands obtained are found to posess Dirac cone dispersion (band touchings) at special points in the Brillouin zone.
A. W. W. Ludwig   +31 more
core   +1 more source

Farmers’ Willingness to Adopt Clean Energy—Survey in Northeastern China

open access: yesIOP Conference Series: Earth and Environment, 2020
Among 1.38 billion people in China, approximately forty-two percent of the population reside in rural areas. Farmers’ willingness to adopt clean energy is crucial to policy makers, planners and business developers as China will begin its Paris Agreement ...
Xuesong Li, Yaowu Dong
semanticscholar   +1 more source

Nanoparticle‐Coated X2CrNiMo17‐12‐2 Powder for Additive Manufacturing – Part I: Surface, Flowability, and Optical Properties of SiC, Si, and Si3N4 Coated Metal Powders

open access: yesAdvanced Engineering Materials, EarlyView.
Herein, silicon‐based nanoparticle coatings on X2CrNiMo17‐12‐2 metal powder are presented. The coating process scale, process parameters, nanoparticle size (65–200 nm) as well as the coating amount are discussed regarding powder properties. The surface roughness affects the flowability, while reflectance depends on the coating material and surface ...
Arne Lüddecke   +4 more
wiley   +1 more source

Energetic assessment of a precalcining rotary kiln in a cement plant using process simulator and neural networks

open access: yesAlexandria Engineering Journal, 2022
Cement production has been increasing rapidly leading to energy consumption, with serious cost implications and environmental challenges. Energy efficiency is a key component required to maintain the cement company’s environmental strategy. In this study,
Anthony I. Okoji   +4 more
doaj  

Gluon saturation effects at forward rapidities at LHC in pp collisions

open access: yes, 2009
We investigate hadrons and direct photon production in pp collisions at the LHC energy within the color-dipole approach. We show that greatest sensitivity to gluon saturation effects is reached at very forward rapidities in pp collisions at LHC (\sqrt{s}=
Rezaeian, Amir H.
core   +1 more source

Spray Deposition for Solvent Annealing of Hybrid Poly(3,4‐Ethylenedioxythiophene) Polystyrene Sulfonate Cellulose Silver Nanowire Composite Electrodes Using a Roll‐to‐Roll Coater

open access: yesAdvanced Engineering Materials, EarlyView.
The fabrication and post‐treatment via solvent annealing of poly(3,4‐ethylenedioxythiophene) polystyrene sulfonate‐based electrodes using spray deposition in a roll‐to‐roll setup are presented. The decrease in sheet resistance and its correlation with nanostructure and molecular structure in the electrodes as a function of the processing parameters is ...
Marie Betker   +10 more
wiley   +1 more source

Constrained hyperbolic divergence cleaning in smoothed particle magnetohydrodynamics with variable cleaning speeds [PDF]

open access: yes, 2016
We present an updated constrained hyperbolic/parabolic divergence cleaning algorithm for smoothed particle magnetohydrodynamics (SPMHD) that remains conservative with wave cleaning speeds which vary in space and time. This is accomplished by evolving the quantity $\psi / c_h$ instead of $\psi$.
arxiv   +1 more source

Enhanced Fog Water Harvesting on Superhydrophobic Steel Meshes

open access: yesAdvanced Engineering Materials, EarlyView.
Fog harvesting using mesh designs offers a sustainable solution to water scarcity. This study highlights key considerations for fog harvesting research and develops a methodology for a standardized protocol reflecting fog characteristics and environmental conditions.
Pegah Sartipizadeh   +3 more
wiley   +1 more source

Analyzing the journey and future trajectories of clean cooking research in India: a bibliometric analysis and case study research

open access: yesDiscover Sustainability
The clean cooking challenge in India is deeply intertwined with socioeconomic, cultural, and infrastructural barriers. Despite government initiatives, a significant portion of the population still depends on solid biomass for cooking, leading to severe ...
Amardeep Yadav   +4 more
doaj   +1 more source

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