Buscar recursos académicos

Fe-N-C catalysts are highly competitive alternatives to noble-metal catalysts for the oxygen reduction reaction (ORR). Herein, an efficient Fe and N co-doped three-dimensional graphene (Fe-N-G) catalyst that possesses a ...

The coalescence process of two nanoparticles to yield a core-shell structure is analyzed by a well-tempered metadynamics procedure. This methodology has been shown to be useful in understanding the present phenomenon in ...

Este artigo busca analisar as razões motivadoras da parceria no jogo das negociações comerciais multilaterais. O objetivo é contribuir para a compreensão mais ampla sobre as bases (doméstica e internacional) do pro...

Given a standard myopic process in a coalition formation game, an absorbing set is a minimal collection of coalition structures that is never left once entered through this process. Absorbing sets are an important soluti...

Ground coal bunker blockage hinders production at a coal mine in Yulin City, Shaanxi Province, with wall adhesion and arching as two main types of blockage. This study proposes a carbon dioxide (CO2) blasting method as a...

This study aims to test the effectiveness of sawdust as an alternative fuel to replace coal in a 50 MW power plant in an effort to reduce dependence on fossil fuels and have a negative impact on the environment. The use ...

Ride-pooling has the potential to offer a sustainable solution for urban mobility by reducing vehicle use and emissions through shared trips. However, its adoption remains limited due to poor matching performance. Many r...

Abstract Land subsidence induced by underground coal mining consistently leads to persistent ponding in coal-grain overlapping areas (COAs), substantially impairing agricultural productivity. However, amid stringent farm...

Abstract Thick-hard roof fracturing presents a significant challenge for disaster prevention in longwall mining. This study investigates the 15,311 south working face and develops a mechanical model to analyze energy rel...

The increasing discharge of high-salinity industrial wastewater poses serious environmental and resource challenges, necessitating innovative utilization approaches. In this study, high-salt wastewater containing Na+ and...

Based on the test principles of geological mechanics model and engineering geological and hydrogeological conditions of Nansi Lake, 12 geological mechanics model are established. By simulating the coal mining under the l...

Abstract The residual coal pillar and adjacent goafs in the upper coal seam have a superposition effect on the stress environment of the lower coal seam in close distance coal seams with downward mining. Therefore, it is...

The antimicrobial resistance profile of 45 Staphylococcus strains isolated from 10 samples of Brazilian type "coalho" cheese was evaluated against eight antibiotics used either in human or in veterinarian medicine. The t...

Abstract Superalloy is the only utilizable material for underground coal gasification channel joint. In this research, the high temperature gas flow erosion wear behavior of superalloy with strengthened layer by boronizi...

This study presents pioneering research addressing the challenge of surrounding rock control in gob-side entry retaining by roof cutting under the conditions of a gently inclined coal seam with an extra-thick main roof r...

Given the substantial contribution of coal-fired power generation to environmental pollution in South Korea, evaluating the effectiveness of policies in the electric power sector is essential. The South Korean government...

Open-pit coal mine rehabilitation is essential to mitigate ecosystem degradation and biodiversity loss. Given that ants (Hymenoptera: Formicidae) are excellent bioindicators, we evaluated the response of their communitie...

RESUMO A fabricação de queijo coalho artesanal elaborado com leite de cabra é composta pelas etapas de obtenção do leite, refrigeração, manipulação e armazenamento, que aumentam o risco de contaminação do prod...

Abstract Early small fires in coal mines are of critical importance for mine safety, as most incidents begin as small fire sources. These fires essentially constitute a task of small-object detection. Detecting such targ...

This study proposes a deep-hole directional blasting technology based on polymer energy charge packages for roof cutting and pressure relief as a solution to difficult roadway support and poor stability of coal pillars d...

The trace elements enrichments and modes of occurrence were investigated in the feed coals and coal ashes from the thermal power plants Tunçbilek (Kütahya), Soma-Torku and Soma-Kolin (Manisa), Çan 18 Mart (Çanakkale)...

This article examines how fiscal constraints influence the development of contemporary industrial policy, with a focus on European initiatives to encourage green growth and sustainability. Due to high debt levels and the...

Chattanooga has undergone a remarkable transformation from a heavily industrialized rail depot and one of the nation’s most polluted cities to the first designated National Park City in the United States of America...

To investigate the influence mechanism of roof pre-splitting blasting on overlying strata movement in automated roadway formation without coal pillars, the mechanical response characteristics of the bearing structure of ...