Results 71 to 80 of about 27,009 (264)

Molecularly Engineered Dual‐Crosslinked Polymer Dielectrics for 200 °C Capacitive Energy Storage

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This work establishes a molecular engineering strategy that constructs a robust dual‐crosslinked network in polymer nanocomposites, achieving a record‐high energy density of 5.17 J cm−3 with >90% efficiency at 200 °C. The multiscale‐validated design simultaneously enhances dielectric polarization and introduces deep electron traps, resulting in ...
Xue Li   +9 more
wiley   +1 more source

Some factors affecting the longevity of Hungarian Simmental beef purposed cattle [PDF]

open access: yesJournal of Central European Agriculture
The study aimed to assess the influence of herd size, age at first calving, year, month, season of first calving, and first calf sex on the longevity of Hungarian Simmental beef cattle using survival analysis. The data included 598 sires, 9,077 dams, and
Wissem BACCOURI, János POSTA
doaj   +1 more source

Linear‐Nonlinear‐Linear Sandwich‐Structured Polymer Composites With Metal‐Organic Framework (MOF)‐Enhanced Insulating Layers and Horizontally Oriented Nanotube‐Filled Polarization Layer for High Energy Storage Performance

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A linear‐nonlinear‐linear (LNL) sandwich dielectric film was rationally designed for high energy storage. Its outer linear layers are MOF (ZIF‐8)‐enhanced PEI composites (EZ), and the middle nonlinear layer is an electrospun‐hot‐pressed P(VDF‐HFP)/TNTs composite (PT) with horizontally oriented TNTs.
Yanpeng Li   +7 more
wiley   +1 more source

Glycerol‐Modified Biphasic Silicone Gel for Synergistic Thermal Transport and Dielectric Reliability

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A surfactant‐free glycerol‐modified biphasic silicone gel establishes metastable liquid interfaces that simultaneously enhance phonon transport and induce deep traps (1.28 eV), enabling synergistic electrothermal performance of enhanced thermal conductivity (+33.3%), thermal diffusivity (+48.3%), and DC breakdown strength (+57.6%) with suppressed space
Xinyue Zhang   +3 more
wiley   +1 more source

Polyimide Regulated by Molecular Engineering Exhibits Excellent High‐Temperature Energy Storage Performance

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Comprehensive performance analysis chart. Under high temperature and high electric field, the excitation and migration of electrons in polymer dielectrics are significantly accelerated, resulting in a sharp increase in conduction loss and a deterioration of breakdown performance.
Dongyu Hou   +9 more
wiley   +1 more source

A Robust Densification Strategy Toward Ultrahigh Energy Density in All‐Organic Dielectric Polymer Films

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A scalable densification strategy is proposed by incorporating sucrose into a fluoropolymer matrix to build a robust hydrogen‐bond crosslinking network. The intermolecular interactions effectively facilitate polar phase transformation and reduce free volume fraction.
Lingni Yang   +11 more
wiley   +1 more source

Modeling the Combined Effect of Pressure and Mild Heat on the Inactivation Kinetics of Escherichia coli, Listeria innocua, and Staphylococcus aureus in Black Tiger Shrimp (Penaeus monodon)

open access: yesFrontiers in Microbiology, 2017
The high-pressure inactivation of Escherichia coli, Listeria innocua, and Staphylococcus aureus was studied in black tiger shrimp (Penaeus monodon). The processing parameters examined included pressure (300 to 600 MPa) and temperature (30 to 50°C).
Barjinder P. Kaur, P. Srinivasa Rao
doaj   +1 more source

Complex Versus Parsimonious Site‐Based Stochastic Ground Motion Models: Which One Is Better?

open access: yesEarthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Stochastic ground motion models (GMMs) provide a probabilistic representation of seismic input and are increasingly important for uncertainty quantification (UQ) in earthquake engineering. This study focuses on site‐based stochastic GMMs, which learn the statistical features of selected datasets of seismic records and generate statistically ...
Maijia Su   +2 more
wiley   +1 more source

Lifetime Analysis of Grid‐Tied Photovoltaic System Considering DC–DC Converter Ripple and Efficiency

open access: yesEnergy Science &Engineering, EarlyView.
This work presents a comprehensive lifetime analysis of a two‐stage grid‐tied photovoltaic (PV) system by incorporating critical factors such as input current ripple and operating voltage variations, which are often neglected in conventional studies.
Surla Vishnu Kanchana Naresh   +2 more
wiley   +1 more source

Evaluation des performances de quatre types d’éolienne dans une zone aride

open access: yesRevue des Énergies Renouvelables, 2012
Les données vent relatives à la station météorologique de Tiaret, une ville située au centre des hauts plateaux algériens, ont été traitées afin d’évaluer les caractéristiques statistiques de la vitesse du vent et du potentiel éolien à une hauteur de 10 ...
S. Louassa, M. Merzouk, O. Guerri
doaj  

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