Results 71 to 80 of about 294,420 (308)
Viewgraphs on vibration isolation are presented. Techniques to control and isolate centrifuge disturbances were identified. Topics covered include: disturbance sources in the microgravity environment; microgravity assessment criteria; life sciences ...
Bastin, Paul
core +1 more source
Modulating Electrochemical CO2 Reduction Pathways via Interfacial Electric Field
Advanced Functional Materials, EarlyView.Engineering interfacial electric fields in Cu/ITO electrodes enables precise control of CO2 reduction pathways. Charge transfer from Cu to ITO generates positively charged Cu species that steer selectivity from ethylene toward methane. This work demonstrates how interfacial electric‐field modulation can direct reaction intermediates and transform ...
Mahdi Salehi +7 more
wiley +1 more source
Active Vibration Control of Landing Gear System
Düzce Üniversitesi Bilim ve Teknoloji DergisiThe vibration of the aircraft when taxing, landing, and taking off is a great problem. Vibration induced due to the dynamic interaction of aircraft with the ground causes serious problems. Therefore, the vibration should be reduced or completely absorbed
Ali Suat Yıldız +2 more
doaj +1 more source
Vibration damping and isolation systems using direct inertia force control
Mechanical Engineering Journal, 2014 Active vibration control devices are extensively used in various industrial fields. These devices are categorized according to their mechanisms into the following two types: (A) The vibration is controlled by actuators whose ends are connected to the ...
Masaharu TAGAMI +4 more
doaj +1 more source
Analytical design and evaluation of an active control system for helicopter vibration reduction and gust response alleviation [PDF]
An analytical study was conducted to define the basic configuration of an active control system for helicopter vibration and gust response alleviation. The study culminated in a control system design which has two separate systems: narrow band loop for ...
Gold, P. +3 more
core +1 more source
Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76)
Advanced Functional Materials, EarlyView.Luminescent MOF‐76 materials based on Eu(III) and mixed Eu(III)/Y(III) show rapid and reversible changes in emission intensity in response to O2 with very short response times. The effect is based on triplet quenching of the linker ligands that act as photosensitizers. Average emission lifetimes of a few milliseconds turn out to be mostly unaffected by
Zhenyu Zhao +5 more
wiley +1 more source
Active vibration control for flexible rotor by optimal direct-output feedback control [PDF]
Experimental research tests were performed to actively control the rotor vibrations of a flexible rotor mounted on flexible bearing supports. The active control method used in the tests is called optimal direct-output feedback control.
Dirusso, Eliseo +2 more
core +1 more source
Electroactive Metal–Organic Frameworks for Electrocatalysis
Advanced Functional Materials, EarlyView.Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska +7 more
wiley +1 more source
Neural-Network-Based Active Vibration Control of Rotary Machines
IEEE AccessThis paper presents a novel approach for modeling and mitigating vibrations in rotary machines during transient operations, such as start-up and shutdown.
Sina Piramoon, Mohammad Ayoubi
doaj +1 more source
Photoswitching Conduction in Framework Materials
Advanced Functional Materials, EarlyView.This mini‐review summarizes recent advances in state‐of‐the‐art proton and electron conduction in framework materials that can be remotely and reversibly switched on and off by light. It discusses the various photoswitching conduction mechanisms and the strategies employed to enhance photoswitched conductivity.
Helmy Pacheco Hernandez +4 more
wiley +1 more source