Results 71 to 80 of about 16,517,842 (295)

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal   +2 more
wiley   +1 more source

Cálculo de Esforço nos Semicondutores do Inversor Fonte Z

open access: yesEletrônica de Potência, 2016
Este trabalho apresenta o cálculo dos esforços de corrente nos semicondutores do inversor fonte Z trifásico operando com a modulação Boost Simples. O inversor fonte Z possui uma malha de impedância conhecida como malha Z, que possibilita realizar as ...
Vitor T. Odaguiri   +2 more
doaj   +1 more source

Mutation breeding techniques and behaviour of irradiated shoot apices of potato [PDF]

open access: yes, 1978
An attempt was made to produce a di(ha)ploid tester clone with marker genes in an heterozygous condition for studies on induced mutations in potato ( Solanum tuberosum L.). Literature on potato mutations was reviewed.
Harten, A.M., van
core  

Direct shoot regeneration from Arabidopsis thaliana shoot apical meristems

open access: yes, 2012
In Arabidopsis thaliana in vitro culture, shoots were induced from the shoot apical meristem (SAM) of germinating seeds in the presence of 2,4-dichlorophenoxyacetic acid.
Z. Liu   +4 more
core   +1 more source

A Simplified Laminar Flow Model for the Pultrusion of Glass Fiber/Polyethylene Terephthalate Commingled Yarns

open access: yesAdvanced Engineering Materials, EarlyView.
A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares   +3 more
wiley   +1 more source

In vitro regeneration of rose through multiple shoot induction

open access: yesActa Agriculturae Slovenica
Roses (Rosa spp.) are among the most widely cultivated ornamental plants and represent a major source of essential oils used in the fragrance, cosmetic, and pharmaceutical industries.
Ishita CHAUDHURI   +2 more
doaj   +1 more source

Rotary 3D Printing With Integrated Electroplating

open access: yesAdvanced Engineering Materials, EarlyView.
A rotary material extrusion platform integrates localized copper electroplating with printing and encapsulation to fabricate cylindrical polymer–metal structures containing fully embedded, low‐resistance conductive pathways that enable internal Joule heating and thermally activated shape‐memory responses.
Antonio Zagaria   +5 more
wiley   +1 more source

Reference interview, Library photo shoot, 2011

open access: yes, 2011
Reference interview with Frank Ponte (left) as part of a Library photo shoot.
Rebecca Rocks   +1 more
core   +1 more source

Modelling of the shoot-through phenomenon introduced by the next generation IGBT in inverter applications

open access: yesMicroelectronics Reliability, 2017
The shoot-through phenomenon has not been fully discussed for high-power inverters with IGBTs. This is because a negative gate voltage is applied to IGBTs during off states. Recently, attention is paid to an improved gate driver with only a positive gate voltage in order to meet demands for simplification, integration, and reduction in power ...
Seiya Abe   +5 more
openaire   +1 more source

Achieving High ON State Current through Ferroelectric Polarization‐Dependent Interfacial Resistance Switching in Undoped Orthorhombic HfO2 Films

open access: yesAdvanced Functional Materials, EarlyView.
Ferroelectric tunnel junction devices based on epitaxial undoped ferroelectric HfO2 films demonstrate stable switching endurance of over 106 switching cycles, low write voltages of ±3 V, 16 measured resistance states, and neuromorphic capability.
Markus Hellenbrand   +13 more
wiley   +1 more source

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