Results 51 to 60 of about 123,878 (316)

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

Lubricants, 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

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

FEBS 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, Kotaro Ozaki, Ryohei Kuriyama, Yuka Ikemoto, Kazuhiro Mio, Yuji C. Sasaki, Tatsuya Arai, Sakae Tsuda, Yoichi Shinkai, Masahiro Kuramochi   +9 more
wiley   +1 more source

Non-linear viscoelastic characterization of perfluroelastomer raw rubber

Hecheng xiangjiao gongye
Large-amplitude oscillatory shear (LAOS) tests were carried out on 1055 B and 2160 B perfluroelastomer raw rubber. The structural differences were explored by analyzing their rheological behavior.
SONG Rong-hao1, LI Zhen-lian2, HUANG Kai-ming2, YANG Rui1, WANG Chen1, SU Zheng-tao1
doaj   +1 more source

Effect of terahertz irradiation on DNA damage repair in living cells

FEBS 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, Shota Yamazaki, Hiromichi Hoshina, Masahiko Harata   +3 more
wiley   +1 more source

Active Vibration Control for a CNC Milling Machine

, 2013
There is a requirement for improved three-dimensional surface characterisation and reduced tool wear when modern computer numerical control (CNC) machine tools are operating at high cutting velocities, spindle speeds and feed rates.
Longstaff, Andrew P., Myers, A., Lockwood, S., Longstaff, A., Haase, Frerk, Haase, F., Ford, Derek G., Ford, D. G., Myers, Alan, Lockwood, Stephen   +9 more
core   +1 more source

The experimental performance of a nonlinear dynamic vibration absorber [PDF]

, 2013
This paper investigates the physical behaviour andeffectiveness of a nonlinear dynamic vibration absorber(NDVA). The nonlinear absorber considered involves anonlinear hardening spring which was designed andattached to a cantilever beam excited by a ...
Michael J. Brennan, Ferguson, N.S., Brennan, M.J., Yung-Sheng Hsu, Hsu, Y.S., Neil S. Ferguson   +5 more
core   +1 more source

Design of connecting mechanism and motion response analysis on nuclear power platform

Zhongguo Jianchuan Yanjiu, 2020
Objectives To ensure marine nuclear reactor safety in deep-water ice regions, this paper proposes a design for an ice region nuclear power platform and spring damper connecting mechanism.Methods The platform and connecting mechanism simulation model is ...
LI Xiang, LI Hongxia, HUANG Yi
doaj   +1 more source

A Prospective Study of Individuals at Risk of Multiple Sclerosis Informs the Design of Primary Prevention Studies

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective In multiple sclerosis, the optimal time for deploying a therapeutic intervention is before the central nervous system is damaged; given the success of trials treating the earliest stage of MS, the radiologically isolated syndrome, developing primary prevention strategies is an important next challenge.
Amy W. Laitinen, Ceren Tozlu, Tina Roostaei, Fatoumata Diallo, Kaho Onomichi, Jiyeon Son, Zongqi Xia, Philip L. De Jager   +7 more
wiley   +1 more source

Sound Field Reproduction Research and Its Applications in Cabin Noise Reproduction of Vehicles: A Review

Machines
Sound field reproduction (SFR) is vital for noise simulation and acoustic comfort optimization in vehicle cabins. This paper reviews three core SFR techniques: Wave Field Synthesis (WFS), Higher-Order Ambisonics (HOA), and Pressure Matching (PM).
Peilin Zheng, Xu Zheng, Yi Qiu
doaj   +1 more source

Ride quality investigation of seat with an active control system to minimize vertical vibrations from seat to human body in a vehicle (3rd report, in the case of an occupant-seat-vehicle system)

Nihon Kikai Gakkai ronbunshu, 2015
This paper describes a vibration reduction system that can minimize the vertical vibrations of the human body in a vehicle. This system can control the mechanical properties of the seat cushions and seat back cushions, such as the spring constants and ...
Shinichiro OTA, Shuji NISHIYAMA
doaj   +1 more source