Results 131 to 140 of about 73,894 (273)

Validation of Electrostrictive Performance of P(VDF‐TrFE‐CFE) for kHz Range Applications

open access: yesJournal of Polymer Science, EarlyView.
This study demonstrates that the high‐frequency deformation of the relaxor ferroelectric polymer P(VDF–TrFE–CFE) is governed by Maxwell's electrostriction, confirming its suitability for fast electromechanical applications. Combining original high‐frequency mechanical characterization, laser vibrometry measurements, and numerical modeling, a ...
Audrey Michel   +3 more
wiley   +1 more source

Within‐tree spatial heterogeneity of sap flow velocities and wood properties and its effect on the uncertainty of tree level sap flux estimates

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
As forests are important for biodiversity and recreation and provide vital resources globally, it is essential that their health can be accurately monitored, for example, by using sap flow probes to measure tree water uptake. We investigated whether sap flow measurements might differ at various locations within the same tree due to variation in wood ...
Stefan Seeger   +2 more
wiley   +1 more source

Discovery of edodine, a natural compound from Lentinula edodes with antibacterial activity for the biological control of fire blight pathogen Erwinia amylovora

open access: yesPest Management Science, EarlyView.
Novel edodine was identified from Lentinula edodes HK761, exhibiting biocontrol potential against fire blight by affecting motility, intracellular ATP level, and cell division of Erwinia amylovora. Abstract BACKGROUND In the search for biological resources with antibacterial activity against Erwinia amylovora, the culture filtrate of Lentinula edodes ...
Yeong Seok Kim   +7 more
wiley   +1 more source

UAV‐Based Precision Seed Dropping for Automated Reforestation

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT Wildfires and deforestation pose significant threats to forest ecosystems, motivating scalable methods for reforestation beyond labor‐intensive cultivation of native forest seedlings in nurseries. To enable large‐scale direct seeding of native species, this paper presents the design, analysis, and field evaluation of a UAV‐based seed‐dropping ...
Qi Rui Lee   +5 more
wiley   +1 more source

A Compact Annular Electrostatic Clutch Joint: Dynamic Response Modeling and Time‐Sharing Control for Underactuated Robots

open access: yesSmartBot, EarlyView.
Electrostatic clutches offer programmable variable stiffness for multi‐DOF robots, but their continuous motion is usually bottlenecked by spatial constraints and detachment delays. Here, the authors report a compact annular electrostatic clutch joint with a biphasic amplitude‐frequency modulation strategy to rapidly mitigate residual polarization ...
Haochen Yong   +5 more
wiley   +1 more source

Explicit finite element models of friction dampers in forced response analysis of bladed disks

open access: yes, 2008
A generic method for analysis of nonlinear forced response for bladed disks with friction dampers of different designs has been developed. The method uses explicit finite element modeling of dampers, which allows accurate description of flexibility and ...
Yevgen Petrov (4463476)
core  

Resource reallocation across successive systemic innovations: How Rolls‐Royce shaped the evolution of the turbojet, turboprop, and turbofan

open access: yesStrategic Management Journal, EarlyView.
Abstract Research Summary Despite the importance of resource reallocation in shaping a variety of strategic outcomes, strategy scholars have paid only limited attention to the processes by which firms reallocate their resources across successive systemic innovations.
Gino Cattani   +2 more
wiley   +1 more source

Sensing‐Integrated Patient‐Derived Tumorspheres Predict Chemotherapeutic Efficacy via Local Extracellular pH Dynamics

open access: yesSmall, EarlyView.
The study introduces a 3D sensing‐integrated platform enabling real‐time, non‐invasive monitoring of pH dynamics in patient‐derived PDAC tumorspheres. It revealed distinct extracellular acidification patterns under FOLFIRINOX, gemcitabine, and paclitaxel, correlating with therapeutic efficacy.
Stefania Forciniti   +10 more
wiley   +1 more source

Marcasite at the Permian‐Triassic Transition

open access: yesGeophysical Monograph Series, Page 377-399., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Elena Lounejeva   +7 more
wiley  

+1 more source

Anisotropy Thermal Properties of Electrically Insulating Thin Films and Sheets: A Review

open access: yesSmall Methods, EarlyView.
Thermally conducting and electrically insulating materials with anisotropy properties play an integral role in advanced thermal management, in particular for electronic devices. This review discusses recent progress in enhancing thermal conductivity and controlling the thermal anisotropy between in‐plane and cross‐plane (through‐thickness) directions ...
Shanmukhi Sripada   +3 more
wiley   +1 more source

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