Results 151 to 160 of about 621,662 (306)

Robust and Thermally Stable Silicone Aerogels with Hyperconnected Network via Kinetically Optimized Hyperbranched Silane Precursors

open access: yesAdvanced Science, EarlyView.
Reactivity‐Programmed Assembly: A kinetic‐control strategy is reported for constructing hyperconnected silicone aerogels with a robust “thick‐neck” architecture. By exploiting the reactivity disparity of precursors, flexible segments are uniformly embedded within a rigid skeleton.
Aoqing Yan   +9 more
wiley   +1 more source

Chiral‐Encoded Pt‐Ir Surfaces as Apparent Spin Filter for Enhanced Oxygen Reduction

open access: yesAdvanced Science, EarlyView.
The Chiral‐Induced Spin Selectivity (CISS) effect is employed in chiral‐encoded mesoporous Platinum‐Iridium (Pt‐Ir) electrocatalysts to enhance the oxygen reduction reaction (ORR). A break in spin symmetry leads to a substantial antagonistic difference in activity (>200%) when comparing two enantiomorphs of the same electrode.
Zikkawas Pasom   +5 more
wiley   +1 more source

Electric‐Current‐Induced Phase Transformation in Cu6Sn5 Below Its Equilibrium Transition Temperature

open access: yesAdvanced Science, EarlyView.
Electric current induces a monoclinic‐to‐hexagonal phase transformation in Cu6Sn5 at a measured bulk temperature of ∼120°C, below the equilibrium transition temperature. Ex situ synchrotron x‐ray diffraction, TEM, and matched thermal controls show that current stressing promotes the formation of a retained hexagonal η‐phase post‐stress state not ...
Shih‐kang Lin   +3 more
wiley   +1 more source

O konformite a autenticite. Náčrt vplyvu fundamentálnej ontológie na dielo Hannah Arendtovej (On Conformity and Authenticity. A Sketch of Fundamental Ontology Influencing the Work of Hannah Arendt)

open access: yesOstium, 2011
The article provides a sketch of Heidegger’s influence on Arendt’s concept of vita activa. The author focuses on the problem of authentic political action and conformity which, despite Arendt’s criticism towards certain elements of fundamental ontology ...
Michal Zvarík
doaj  

Updatable Closed‐Form Evaluation of Arbitrarily Complex Multiport Network Connections

open access: yesAdvanced Electronic Materials, EarlyView.
The inverse design of electrically large wave devices often uses reduced‐order multiport models with discrete optimization, requiring many evaluations of complex interconnections between subsystems that differ only in a few blocks. This paper introduces a closed‐form framework enabling efficient Woodbury low‐rank updates of related, previous ...
Hugo Prod'homme, Philipp del Hougne
wiley   +1 more source

Toward Stable and High‐Performance Metal Halide Perovskite Field‐Effect Transistors

open access: yesAdvanced Electronic Materials, EarlyView.
This ToC illustrates the evolution from unstable 3D perovskites with ion migration toward advanced 2D, mixed‐halide, and vacancy‐ordered structures, culminating in stable, high‐performance perovskite field‐effect transistors. ABSTRACT There is a critical need for high‐quality perovskite semiconductor films to enable highly stable field‐effect ...
Muhammad Danish Danial bin Zulkifli   +7 more
wiley   +1 more source

Medizinische Ontologien: das Ende des MeSH / Medical ontologies: the end of MeSH

open access: yesGMS Medizin – Bibliothek – Information, 2006
Since the beginning of information technology the complexicity of medical questions and medical information management is an important topic which challenges computer scientists.In the eighties of last century artificial intelligence went awry.
Cazan, Constantin
doaj  

Assessing Mesoscale Heterogeneities in Hard Carbon Electrodes Through Deep Learning‐Assisted FIB‐SEM Characterization, Manufacturing and Electrochemical Modeling

open access: yesAdvanced Energy Materials, EarlyView.
A combination of discrete and finite element method models for the current collector deformation and electrochemical performance analysis, respectively. The models are calibrated and validated with electrochemical and imaging data of hard carbon electrodes. These electrodes were manufactured with different parameters (slurry solid contents of 35 and 40
Soorya Saravanan   +12 more
wiley   +1 more source

Competition Policy and Agribusiness in the Biden Administration

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT The Biden Administration pursued a set of ambitious competition policy initiatives in agriculture and agribusiness, primarily aimed at livestock and poultry supply chains, farm inputs, and food retailing. The initiatives included expanded antitrust enforcement; new US Department of Agriculture (USDA) contract regulations requiring poultry ...
James M. MacDonald
wiley   +1 more source

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