Results 31 to 40 of about 3,560,321 (246)

Numerical Investigation of Vibration Reduction Through IBC for a 20to Helicopter Rotor Model [PDF]

open access: yes, 2002
This paper presents theoretical results of vibration reduction through IBC (Individual Blade Control) for a 20to helicopter rotor model which are based on numerical computations.
van der Wall, Berend G.   +3 more
core  

Modelling and passive correction investigation of vibration induced machining errors on CNC machine tools [PDF]

open access: yes
Machine tool vibration is a complex subject requiring a multi-disciplinary approach involving the identification and analysis of the vibration sources and characteristics, as well as its direct and indirect effects. Machine tool vibration is influenced
Widiyarto, Muhammad Helmi Nur
core   +4 more sources

Hybrid Vibration Reduction System for a Vehicle Suspension under Deterministic and Random Excitations

open access: yesEnergies, 2023
This paper concerns a hybrid vibration reduction system (HVRS) equipped with a linear electrodynamic motor (LM). The objective of the study was to implement the HVRS in a scaled vehicle suspension and reveal the benefits of its application in the system.
Paweł Orkisz, Bogdan Sapiński
doaj   +1 more source

Hyperactive ice‐binding proteins stabilize cell membranes and improve resistance to dehydration stress in Caenorhabditis elegans

open access: yesFEBS Open Bio, EarlyView.
TisIBP8, a fungal‐derived hyperactive ice‐binding protein, helps Caenorhabditis elegans survive dehydration. It localizes near cell membranes, reduces cell damage, and helps maintain membrane structure during drying. These results suggest that ice‐binding proteins can protect cells from dehydration stress as well as freezing stress.
Daiki Shimose   +9 more
wiley   +1 more source

"Aging behavior of fluororubber with high fluorine content in aviation lubricating oil"

open access: yesHecheng xiangjiao gongye
High fluorine content fluororubber (FKM) was used as the research object, the high temperature medium resistance of high fluorine content FKM vulcanizates in a variety of aero-engine lubricanting oils was investigated, and the changes in physical and ...
SONG Rong-hao, YANG Rui, WANG Chen, SU Zheng-tao
doaj   +1 more source

Design Procedure for Motion Profiles with Sinusoidal Jerk for Vibration Reduction

open access: yesApplied Sciences, 2023
High-speed motions performed by industrial machines can induce severe vibrations that degrade the positioning accuracy and efficiency. To address this issue, this paper proposes a novel motion profile design method utilizing a sinusoidal jerk model to ...
Yi Fang   +3 more
doaj   +1 more source

Effect of terahertz irradiation on DNA damage repair in living cells

open access: yesFEBS Open Bio, EarlyView.
We investigated the effect of terahertz (THz) wave irradiation on DNA double‐strand break (DSB) repair in living cells. We found that THz irradiation enhanced DSB repair at specific frequencies, whereas heat treatment inhibited it, indicating that this effect is nonthermal and frequency‐specific.
Yuya Ueno   +3 more
wiley   +1 more source

Vibration Technologies for Friction Reduction to Overcome Weight Transfer Challenge in Horizontal Wells Using a Multiscale Friction Model

open access: yesLubricants, 2018
Drag reduction technologies mainly include the mechanical method and the chemical method. Mechanical drag reduction technologies are widespread in the drilling field due to their environmental friendliness and ease of use.
Xing-Ming Wang, Xing-Miao Yao
doaj   +1 more source

Novel Gaussian Acceleration Profile for Smooth Jerk-Bounded Trajectories

open access: yesIEEE Access, 2022
Industrial machines regularly work at their limits causing excessive long-term vibrations that deteriorate their movement, stability, and precision. In this sense, reference profiles are able to reduce the detrimental vibration effects by manipulating ...
Gonzalez-Villagomez Esau   +5 more
doaj   +1 more source

Comparative assessment of crystallographic and cryo‐EM models in the Protein Data Bank

open access: yesFEBS Open Bio, EarlyView.
Raw data obtained by X‐ray crystallography or cryo‐EM result in experimental maps, ultimately fitted by atomic models. Although the physical principles are different, the final results can be viewed, compared, and evaluated in the same way. With cryogenic electron microscopy (cryo‐EM) on track to surpass X‐ray crystallography as the preferred method ...
Alexander Wlodawer   +7 more
wiley   +1 more source

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