Results 21 to 30 of about 115,347 (269)

Optimization of the effect and formulation of different coarse aggregates on performance of the paste backfill condensation

工程科学学报, 2020
Hydration and setting time of paste-like backfill slurry in the Gansu Province’s Jinchuan copper and nickel mine is slow, and the degree of segregation of coarse aggregate is high, seriously affecting the quality of cemented paste backfill. In this paper,
Sheng-hua YIN, Jia-ming LIU, Wei CHEN, Long ZOU, Yong-yuan KOU, Xi-wen LI   +5 more
doaj   +1 more source

Review on recovery of valuable metals from complex copper–cobalt co-associated mines

工程科学学报
Copper and cobalt, both strategic metals, play an indispensable role in many fields, such as national infrastructure and defense science and technology. Copper, one of the earliest nonferrous metals discovered, extracted, and applied by humans, teams up ...
Xiang LI, Baozhong MA, Yutian MA, Yuanjun SUN, Juan ZHANG, Chengyan WANG   +5 more
doaj   +1 more source

A Multi-Indicator Fusion-Based Technique for the Identification of Acoustic Emission Signals During Rock Failure

Sensors
With the widespread application of acoustic emission (AE) technology in geotechnical engineering, effectively separating and identifying dense AE signals generated during rock fracturing remains a critical challenge.
Dexian Li, Hongwei Wang, Dengyu Wang, Xuemei Wang, Lianhui Li, Zhongwei Pei, Ying Wang   +6 more
doaj   +1 more source

Dermal and inhalable cobalt exposure-Uptake of cobalt for workers at Swedish hard metal plants.

PLoS ONE, 2020
PurposeCobalt exposure is known to cause adverse effects on health. A major use of cobalt is in the manufacture of hard metal. Exposure can lead to asthma, hard metal lung disease, contact allergy and increased risk of cancer.
Fredrik Wahlqvist, Ing-Liss Bryngelsson, Håkan Westberg, Per Vihlborg, Lena Andersson   +4 more
doaj   +1 more source

Clinical Impact of NOTCH3 Variant Location After First Stroke in CADASIL

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Despite its monogenic origin, Cerebral Autosomal Dominant Arteriopathy with Subcortical Infarcts and Leukoencephalopathy exhibits marked variability in clinical expression and severity. Variants in the NOTCH3 gene, within epidermal growth factor‐like repeat domains 1–6 or 7–34, are known to influence disease onset, but their impact ...
Léa Aguilhon, Hugues Chabriat, Dominique Hervé, Stéphanie Guey, Sophie Tezenas Du Montcel, Juliette Ortholand   +5 more
wiley   +1 more source

Time‐Dependent Oxidation and Scale Evolution of a Wrought Co/Ni‐Based Superalloy

Advanced Engineering Materials, EarlyView.
This study shows how a new wrought Co/Ni‐based superalloy resists oxidation at 800 ∘$^\circ$C. The oxide scale changes from rough, fast‐growing spinel to a dense, protective chromia–alumina layer. Atom probe analysis reveals tiny refractory‐rich bubbles at the interface that mark the transition to long‐term, diffusion‐controlled protection ...
Cameron Crabb, Zachary T. Kloenne, Samuel R. Rogers, Chi Hang Dominik Kwok, Mark C. Hardy, Michele S. Conroy, David Dye   +6 more
wiley   +1 more source

Preparation and Characterization of Biomedical Ni-Co-Al Shape Memory Alloys [PDF]

Engineering and Technology Journal, 2016
This research presents microstructural characterization of the CoNi Al shape memory alloy with focus on understanding the significant properties as well as the relation between the physical properties and microstructure of this alloy.
Emad S. Al-Hassani, Sahib M. Al-Saffar, Zena Abdul Ameer   +2 more
doaj   +1 more source

Microstructure Reconstruction in Battery Electrodes Using Machine Learning Based on Low‐Voltage Focused Ion Beam–Scanning Electron Microscopy Tomography Images

Advanced Engineering Materials, EarlyView.
Low‐voltage FIB‐SEM tomography combined with a image preprocessing pipeline improves phase contrast and enables reliable machine‐learning segmentation of conductive networks in lithium‐ion battery electrodes. Structural descriptors are extracted from segmented images, done semimanually and automated, and compared.
Lisa Beran, Vincent Nebel, Dominik Perius, Kshitij Kumar, Yannis Heim, Laura Bies, Tobias Kraus   +6 more
wiley   +1 more source

Continuous Stiffness Graded Metal–Ceramic Femoral Stems: UMAT‐Based Design and Finite Element Assessment

Advanced Engineering Materials, EarlyView.
Functionally graded metal–ceramic femoral stems are engineered through continuous UMAT‐based stiffness tailoring, eliminating discrete material interfaces while enhancing biomechanical compatibility. Low‐index power‐law gradation optimizes load transfer, reduces stress shielding, and controls implant–bone micromotion, highlighting a materials‐design ...
Rihem Nouira, Sameh Elleuch, Hanen Jrad
wiley   +1 more source

Supplementation of 5,6-Dimethylbenzimidazole and Cobalt in High-Concentrate Diet Improves the Ruminal Vitamin B₁₂ Synthesis and Fermentation of Sheep

Fermentation, 2023
The objective of this experiment was to investigate the effects of 5,6-dimethylbenzimidazole (5,6-DMB) and cobalt (Co) on the ruminal vitamin B12 synthesis and fermentation parameters of sheep under high concentrate conditions.
Rui Zhang, Zhiqiang Cheng, Changjiang Zang, Changyun Cui, Changwen Zhang, Yiling Jiao, Fengming Li, Xiaobin Li, Kailun Yang, Qiujiang Luo   +9 more
doaj   +1 more source