Results 41 to 50 of about 77,927 (190)

Phase‐Resolved Dual Control of Phenol Photodissociation at the Air–Water Interface From Structure‐Resolved Statistics

Advanced Science, EarlyView.
Faster phenol photolysis at the air–water interface arises from two cooperative factors: a more favorable initial microenvironment for solvent‐side electron stabilization, which lowers CI access, and a more labile hydrogen‐bond network, which more readily reorganizes to stabilize the dark‐state intermediate.
Qiang Yin, Jialing Shi, Jinping Zhao, Chengjun Li, Yongbo Xie, Benkun Tan, Da Wang, Ziyun Wang, Yu Mao   +8 more
wiley   +1 more source

Improvement of the stoping technology in mining magnetite quartzite by underground methods [PDF]

E3S Web of Conferences
The ore deposits in Kryvyi Rih iron ore basin are mined using bulk ore and overlying rocks caving systems. These mining systems have a significant drawback, namely a 2 – 5% reduction in the iron content of the mined ore mass when mining rich ores and up ...
Pysmennyi Serhii, Fedko Mykhaylo, Peremetchyk Andrii, Chukharev Serhii, Pilchyk Volodymyr, Mutambo Victor   +5 more
doaj   +1 more source

Evaluation of microstructural and nanomechanical performance of spark plasma sintered TiFe-SiC reinforced aluminium matrix composites

Journal of Materials Research and Technology, 2020
Due to the increasing demand for lighter materials with enhanced properties, the upgrade of techniques to improve the production of high-performance composite materials is of great interest in modern technology.
Samuel Olukayode Akinwamide, Miltia Lesufi, Ojo Jeremiah Akinribide, Peggy Mpolo, Peter Apata Olubambi   +4 more
doaj   +1 more source

MODERN IMPROVEMENTS IN COAL-MINING: WINDING FROM DEEP MINES. SECOND METROPOLITAN ENGINEERING CONFERENCE, 8 JUNE 1899. NOTES INTRODUCING SUBJECTS FOR DISCUSSION. SECTION IV - MINING & METALLURGY. [PDF]

Minutes of the Proceedings of the Institution of Civil Engineers, 1899
n ...
openaire   +2 more sources

Explaining the Origin of Negative Poisson's Ratio in Amorphous Networks With Machine Learning

Advanced Intelligent Discovery, EarlyView.
This review summarizes how machine learning (ML) breaks the “vicious cycle” in designing auxetic amorphous networks. By transitioning from traditional “black‐box” optimization to an interpretable “AI‐Physics” closed‐loop paradigm, ML is shown to not only discover highly optimized structures—such as all‐convex polygon networks—but also unveil hidden ...
Shengyu Lu, Xiangying Shen
wiley   +1 more source

Investigating the effects of porosity on the strength and mechanical behaviors of geo-materials’ specimens [PDF]

Analytical and Numerical Methods in Mining Engineering
Porosity plays a crucial role in both natural and man-made materials, serving as a fundamental microstructural characteristic that has a significant impact on their physical properties.
Abolfazl Dalirnasab, Mohammad Fatehi Marji, Hamid Reza Nejati, Mohsen Mohebbi   +3 more
doaj   +1 more source

Analysis of coal quality in a function of selection level for mining at the open pit Gacko [PDF]

Mining and Metallurgy Engineering Bor, 2017
This work analyzes the quality of coal in the function level selection for exploitation. A detailed analysis was carried out for the main coal seam, the first floor seam, the second floor seam and the overlying coal series of the coal deposit Gacko of 0 ...
Stepanović Saša, Stanić Nikola, Šešlija Miodrag, Gomilanović Miljan   +3 more
doaj   +1 more source

Microwave‐Assisted Alcoholysis of Ethylene–Vinyl Acetate: Phenomenological and Thermal Evolution of EVAOH Terpolymers

Journal of Applied Polymer Science, EarlyView.
Microwave‐assisted alcoholysis converts EVA into EVAOH terpolymers, promoting a progressive transition from EVA‐like crystallites to VOH‐rich hydrogen‐bonded crystalline domains. Solvent‐controlled swelling influences conversion kinetics, while thermal analysis reveals a sigmoidal increase in melting temperature that a two‐population crystallization ...
Fernanda Trindade Gonzalez Dias, Aline Benittes dos Santos, Lucas Dall Agnol, Otávio Bianchi   +3 more
wiley   +1 more source

Influence of laser processing parameters on microstructure and defect formation in PBF-LB printed Al-Si-Mg alloys [PDF]

MATEC Web of Conferences
The performance and reliability of additively manufactured Al-Si-Mg parts are strongly influenced by processing parameters, which affects microstructure and defect formation.
Semetse Lerato, Godlo Yanelisa Nelly, Olaogun Olayinka, Olubambi Peter Apata   +3 more
doaj   +1 more source

Phase Field Simulation of AA6XXX Aluminium Alloys Heat Treatment

Metals, 2021
Heat treatment has a significant impact on the microstructure and the mechanical properties of Al-Mg-Si alloys. The present study presents a first Phase-Field modelling approach on the recrystallisation and grain growth mechanism during annealing.
Antonis Baganis, Marianthi Bouzouni, Spyros Papaefthymiou   +2 more
doaj   +1 more source