Results 31 to 40 of about 661,431 (257)

Covalent Bonds Reinforced Strength and Modulus of Heterocyclic Aramid Fiber by Interfacial Aminated‐MXene Nanosheets

open access: yesAdvanced Science, EarlyView.
We demonstrate the covalent bonds strategy to enhance the mechanical property of PBIA fiber by using interfacial MXene‐NH2 nanosheets. The MXene‐NH2 nanosheets with reactive amino sites that can serve as nucleating agents and chain anchors to enhance orientation, crystallinity and interchain interaction of PBIA fiber via strong interfacial amido ...
Boyuan Chen   +7 more
wiley   +1 more source

Grain refinement impact on the mechanical properties and wear behavior of Mg-9Gd-3Y-2Zn-0.5Zr alloy after decreasing temperature reciprocating upsetting-extrusion

open access: yesJournal of Magnesium and Alloys, 2022
Based on the deforming technique of severe plastic deformation (SPD), the grain refinement of a Mg-9Gd-3Y-2Zn-0.5Zr alloy treated with decreasing temperature reciprocating upsetting-extrusion (RUE) and its influence on the mechanical properties and wear ...
Wenlong Xu   +7 more
doaj   +1 more source

Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective

open access: yesAdvanced Electronic Materials, EarlyView.
Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe   +4 more
wiley   +1 more source

Smart Exploration of Perovskite Photovoltaics: From AI Driven Discovery to Autonomous Laboratories

open access: yesAdvanced Energy Materials, EarlyView.
In this review, we summarize the fundamentals of AI in automated materials science, and review AI applications in perovskite solar cells. Then, we sum up recent progress in AI‐guided manufacturing optimization, and highlight AI‐driven high‐throughput and autonomous laboratories.
Wenning Chen   +4 more
wiley   +1 more source

Phytoplankton Diversity Effect on Ecosystem Functioning in a Coastal Upwelling System

open access: yesFrontiers in Marine Science, 2020
Species composition plays a key role in ecosystem functioning. Theoretical, experimental and field studies show positive effects of biodiversity on ecosystem processes.
Jaime Otero   +2 more
doaj   +1 more source

Nothing to See Here: Researching Non‐Recent Child Abuse in Schools and the Politics of Silence

open access: yesAustralian Journal of Social Issues, EarlyView.
ABSTRACT While institutions, including schools, have responsibilities to protect children from harm, responses to instances of child sexual abuse have often exhibited avoidance and denial. Recent public inquiries in Australia revealed that some institutions, particularly in the Catholic sector, employed a deliberate strategy of silence which was used ...
John Crowley   +2 more
wiley   +1 more source

Cercetări arheologice preventive la Nufăru, jud. Tulcea (II)

open access: yesMateriale și Cercetări Arheologice, 2012
Les auteurs présentent les résultats des fouilles pratiquées pendant les années 2008– 2011 dans un site archéologique situé dans le Nord de la Dobroudja, entièrement recouvert par un village contemporain.
Damian, O.   +4 more
doaj   +1 more source

Notes on Polyphylia Harris with a description of a new species (Coleoptera: Scarabaeidae: Melolonthinae) [PDF]

open access: yes, 1998
Polyphylla aeolus La Rue, new species, is described from the Kelso Sand Dunes, Mojave Desert, San Bernardino County, California, U.S.A. Illustrations of dorsal habitus, significant morphological details, and adult genitalic forms are provided.
La Rue, Delbert A.
core   +1 more source

Mapping the Reactivity of the C═C Bond of Cyclic Enol Ether Derivatives of Sugars: Nucleophilicity Parameters of Glycals

open access: yesAngewandte Chemie International Edition, EarlyView.
Endo or Exo? The first quantitative kinetic mapping of the nucleophilic reactivity of endo‐ and exo‐glycal compounds highlighted that endo‐glycals are typically 102 times less reactive than their corresponding parent cyclic enol ethers while exo‐glycals are 103 more nucleophilic. This experimental and computational structure–reactivity study highlights
Sophie Rodrigues   +7 more
wiley   +1 more source

Root bark of Ulmus davidiana var. japonica restrains acute alcohol-induced hepatic steatosis onset in mice by inhibiting ROS accumulation. [PDF]

open access: yesPLoS ONE, 2017
Alcohol-induced hepatic steatosis and inflammation are key drivers of alcohol-induced liver injury, mainly caused by oxidative stress. The roots bark of Ulmus davidiana var.
Jeong Hoon Pan   +8 more
doaj   +1 more source

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