Results 51 to 60 of about 737,101 (308)
Guardianes del río. Reflexiones sobre lo que hacemos y aprendemos al lado del agua
Revista +E, 2017 “Guardianes del río” nace como un Proyecto de Extensión de Interés Social de la Universidad Nacional del Litoral (UNL, Santa Fe, Argentina), con el objeto de integrar a los alumnos y exalumnos de la Escuela Media O.
Patricia Mines, Ricardo Giavedoni
doaj +1 more source
Sustainable Rehabilitation of Surface Coal Mining Areas: The Case of Greek Lignite Mines
Energies, 2020 Surface lignite mines of the Balkan Peninsula face growing pressure due to the CO2 emissions reduction initiatives, rapidly increasing renewable-power capacity, and cheap natural gas.
Francis Pavloudakis +3 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.The corrosion performance of AlSi7Mg and AlSi10Mg alloys produced through selective laser melting (SLM) was examined under compressive stress in a chloride environment. Electrochemical analyses, including open‐circuit potential (OCP), potentiodynamic polarization (CPP), and electrochemical impedance spectroscopy (EIS), were complemented by scanning ...
Femi John Akinfolarin +2 more
wiley +1 more source
Research progress on coal mine laser methane sensor [PDF]
, 2019 This paper discusses the research progress of low-power technology of laser methane sensors for coal mine. On the basis of environment of coal mines, such as ultra-long-distance transmission and high stability, a series of studies have been carried out ...
Grattan, K. T. V. +10 more
core +1 more source
Advanced Engineering Materials, EarlyView.This study demonstrates an efficient recycling route for out‐of‐spec AlSi10Mg atomized powders through compaction and arc remelting followed by suction casting. By correlating compaction load, cooling rate, and resulting microstructure, we show that intermediate pressures (50–80 kN) and rapid cooling refine dendrites, reduce porosity, and enhance ...
Mila Christy de Oliveira +4 more
wiley +1 more source
ANALYSIS OF SAFETY AT WORK RATE IN CHOSEN MINES OF UPPER SILESIAN COAL BASIN [PDF]
Management Systems in Production Engineering, 2012 The article presents an experimental comparison of safety at work in hard coal mines located in Upper Silesia Coal Basin. The aim was to show the best practices and activities in Poland and Czech Republic which could be successfully implemented in other ...
Krzysztof KURUS, Barbara BIAŁECKA
doaj
La sicurezza nelle miniere sarde tra Otto e Novecento: cosa ci raccontano le statistiche
Storicamente, 2019 The interpretation provided by the historiography in the field of security in Sardinian mines in the Italy of the second industrial revolution is darkened, an interpretation that makes the mine a very insecure place, marked by a dripping of tragedies and
Luca Tedesco
doaj +1 more source
Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys
Advanced Engineering Materials, EarlyView.This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa +9 more
wiley +1 more source
FORECASTING OF ECOLOGICAL AND ECONOMIC CONSEQUENCES OF FLOODING OF COAL MINES [PDF]
, 2018 The main objective of the paper is to determination of the impact of groundwater near coal mines on the health of the local population in order to compensate for this impact on the cost of treatment for ...
ANTONIUK, Oxana +8 more
core
Advanced Engineering Materials, EarlyView.The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee +7 more
wiley +1 more source