Results 81 to 90 of about 3,199,164 (236)

A 3D‐Printed SFE‐Graded Alloy Mitigates Cryogenic Discontinuous Plastic Flow and Hydrogen Embrittlement

open access: yesAdvanced Science, EarlyView.
A novel strategy features gradient composition and stacking fault energy‐tuned (CoCrMn)100‐2xFexNix fabricated via in situ alloying additive manufacturing. This design circumvents cryogenic discontinuous plastic flow and hydrogen embrittlement of metallic materials under quasi‐static loading and hydrogen‐rich environment relevant to lunar polar ...
Renhao Wu   +11 more
wiley   +1 more source

Colossal Magnetic‐Field‐Induced Anomalous Hall Conductivity in a Kagome Antiferromagnet YMn6Sn6

open access: yesAdvanced Science, EarlyView.
Magnetic‐field‐driven spin canting in the kagome antiferromagnet YMn6Sn6${\rm YMn}_6{\rm Sn}_6$ reshapes flat and Dirac bands near the Fermi level, redistributing Berry curvature and producing colossal anomalous Hall conductivity. The study reveals how magnetic configuration and clean‐limit skew scattering cooperate to amplify Hall transport, offering ...
Minhyuk Choi   +9 more
wiley   +1 more source

Anode‐Free Sodium Metal Batteries: From Materials Design to System‐Level Integration

open access: yesAdvanced Science, EarlyView.
Anode‐free sodium metal batteries hold no sodium reserve, so every inefficiency becomes permanent loss. Resolving the inventory into reversible, dead, and chemically bound fractions exposes what Coulombic efficiency hides. Practical 500‐cycle operation requires above 99.95%, a threshold few systems meet under lean electrolyte and high areal capacity ...
Hamid Hussain   +10 more
wiley   +1 more source

Diamondiyne: A 3D Carbon Allotrope With Mixed sp–sp3 Hybridization

open access: yesAngewandte Chemie, EarlyView.
A new carbon allotrope with mixed sp–sp3 hybridization has been synthesized through delicately controlled kinetics at a liquid–liquid interface. The resulting material, termed diamondiyne, exhibits an expanded diamond‐type network in the form of small crystallites in a continuous all‐carbon film.
Yizhou Yang   +12 more
wiley   +2 more sources

Proceedings of the Arizona-Nevada Academy of Science, Volume 24 (1989)

open access: yes, 1989
THIRTY-THIRD ANNUAL MEETING / April 15, 1989 / Participating Societies - Arizona Junior Academy of Science, American Water Resources Association, Arizona Hydrological Society / University of Nevada / Las Vegas, NevadaThis volume is part of the Arizona ...
Arizona-Nevada Academy of Science
core   +2 more sources

What evidence exists regarding the impact of biodiversity on human health and well-being? A systematic map protocol

open access: yesEnvironmental Evidence
Background Global biodiversity is rapidly declining, yet we still do not fully understand the relationships between biodiversity and human health and well-being.
Honghong Li   +5 more
doaj   +1 more source

A Large Scale Multi‐Modal Workflow for Battery Characterization: From Concept to Implementation

open access: yesAdvanced Energy Materials, EarlyView.
Isolated characterization techniques produce independent datasets and single‐property insights. However, progressively more holistic interpretations of battery‐material behavior is needed in the future. Here we demonstrate a coordinated multimodal workflow enabling the correlation of heterogeneous datasets and the construction of multidimensional ...
François Cadiou   +34 more
wiley   +1 more source

Irving langmuir: o milagre da ciência

open access: yesQuímica Nova, 2001
Irving Langmuir received the Nobel Prize in Chemistry in 1932 "...for his outstanding discoveries and investigations within the field of surface chemistry", according to the Swedish Academy.
Gugliotti Marcos
doaj  

Assessing Government Subsidies for Reducing Pesticide Use: A Meta‐Analysis

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT In the efforts being made by governments to reduce pesticide use, subsidies are an important instrument to encourage farmers to adopt more sustainable practices. Yet, their effectiveness remains uncertain due to diverse designs and contexts.
Gaëlle Leduc   +3 more
wiley   +1 more source

Titanic lessons for Spaceship Earth to account for human behavior in institutional design

open access: yesnpj Climate Action
Combating environmental degradation requires global cooperation. We here argue that institutional designs for such efforts need to account for human behavior.
Therese Lindahl   +10 more
doaj   +1 more source

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