Results 61 to 70 of about 482,662 (301)
Nickel-Catalyzed Defluorinative Coupling of Aliphatic Aldehydes with Trifluoromethyl Alkenes
, 2022 A simple procedure is reported for the nickel-catalyzed defluorinative alkylation of unactivated aliphatic aldehydes. The process involves the catalytic reductive union of trifluoromethyl alkenes with aldehydes using a nickel complex of a 6,6 ...
John Montgomery (217551) +3 more
core +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 +5 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.This article investigates the dependence of the properties on the manufacturing orientation in the form of the inclination angle to the build plate of LPBF‐fabricated NiTi rods with a diameter of 150–220 µm. Metallographic, chemical, thermal, and mechanical characterization show behavior under identical manufacturing conditions that ranges from ...
Sandra Herzig +2 more
wiley +1 more source
SensorsWith 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 +6 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.This study explores the discrepancies between bulk mechanics and spatial mapping in a tissue‐mimetic hydrogel model. Microplastic particles create localized stiff mechanical microenvironments that are detectable by cellular‐scale nanoindentation but leave bulk properties unchanged as measured by rheology.
Ahron T. Verschleisser +3 more
wiley +1 more source
Online Learning Activities: Beginning An International Collaboration
International Review of Research in Open and Distributed Learning, 2002 Early Sunday morning, April 1, 2001, a U.S. Navy EP-3E Aries II surveillance plane collided with a Chinese fighter jet, causing the death of the Chinese pilot and forcing an emergency landing by the U.S.
Tom Nickel
doaj +3 more sources
Advanced Engineering Materials, EarlyView.Sustainability assessment requires methodologies that appropriately distinguish between additive and non‐additive material properties. A toxicity‐weighted scoring system is developed and applied that accounts for the disproportionate influence of highly toxic constituents through nonlinear weighting functions, providing more realistic estimates than ...
Seth Mehalic +2 more
wiley +1 more source
Nickel-Catalyzed Carbonylation of Difluoroalkyl Bromides with Arylboronic Acids
, 2019 A nickel-catalyzed carbonylative difluoroalkylation reaction with arylboronic acids under 1 atm of CO has been developed. The reaction proceeds under mild reaction conditions with high efficiency and high functional group tolerance.
Hai-Yang Zhao (5117042) +3 more
core +1 more source
Entropy‐Driven Design of Low‐Melting‐Point Alloys via Compositionally Complex Strategy
Advanced Engineering Materials, EarlyView.Conventional low‐melting‐point alloys (LMPAs) are limited by a narrow compositional space and inherent property trade‐offs. This review presents an entropy‐driven design strategy that overcomes these limitations, ushering in a new class of low‐melting‐point compositionally complex alloys (LMCCAs).
Yinghui Shang +6 more
wiley +1 more source
An econometric model of the world nickel industry [PDF]
The Third United Nations Conference on the Law of the Sea has been concluded in the spring of 1982 with the adoption of a convention text. The acceptance of this text (signature and ratification) by the necessary number of states is still highly ...
Rafati, Mohammed R.
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