Results 21 to 30 of about 1,594,117 (300)

Pre-implantation mouse embryos cultured In vitro under different oxygen concentrations show altered ultrastructures [PDF]

open access: yes, 2020
Assisted Reproductive Technologies routinely utilize different culture media and oxygen (O2) concentrations to culture human embryos. Overall, embryos cultured under physiological O2 tension (5%) have improved development compared to embryos cultured ...
Antonouli, S   +6 more
core   +1 more source

Research on tension device and its tension control system of belt conveyor

open access: yesGong-kuang zidonghua, 2018
In view of problems of nonlinearity, large inertia, hysteresis and time variation of tensioning system of belt conveyor, a mathematical model of tension device was established, and it was proposed to connect a correction links in series to eliminate ...
JIE Shijun   +3 more
doaj   +1 more source

Conservative Party policy for planning: caught between the market and local communities [PDF]

open access: yes, 2010
Whether in power or in opposition, the planning policies of the Conservative Party are caught in a tension between the free market and local communities. On one hand, the Conservatives face developers who want to simplify the planning system, speed up
Goodchild, B.
core   +1 more source

Research and Embedded Implementation of Let-Off and Take-Up Dynamic Control Based on Fuzzy Neural Network and Vector Control Optimization

open access: yesIEEE Access, 2022
This paper investigates the warp let-off and take-up mechanism of rapier looms to solve the problem that the warp tension of rapier looms fluctuates greatly and the warp let-off is difficult to maintain constant. The design and hardware implementation of
Yanjun Xiao   +4 more
doaj   +1 more source

Tension Networked Control Strategy for Carbon Fiber Multilayer Diagonal Loom

open access: yesIEEE Access, 2020
With the aim of solving warp tension control problems in the let-off system and opening system in the carbon fiber multilayer diagonal loom, dynamic models of warp tension are established in this study based on dynamic analysis.
Wei Liu   +4 more
doaj   +1 more source

Modeling and sensorless tension control of SMA actuator using GRU

open access: yesNihon Kikai Gakkai ronbunshu, 2020
This paper proposes a method for sensorless tension control of shape memory alloy(SMA) actuators. Sensorless control has advantages in cost and size. Gated recurrent unit(GRU) was adopted to model complex characteristics of the SMA actuators.
Soki ITO, Hiroyuki HARADA
doaj   +1 more source

Residual effects of fallows on selected soil hydraulic properties in a kaolinitic soil subjected to conventional tillage (CT) and no tillage (NT) [PDF]

open access: yes, 2008
Improved fallows have been used to reduce time required for soil fertility regeneration after cropping in low input agricultural systems. In semi-arid areas of Southern Africa, Acacia angustissima and Sesbania sesban are among some of the more widely ...
Chikowo, R.   +3 more
core   +3 more sources

Control methodology for tensioned web considering thermal behavior in roll-to-roll manufacturing systems

open access: yesEngineering Science and Technology, an International Journal, 2023
The roll-to-roll manufacturing system is utilized for processing flexible webs into functional films, offering high productivity through continuous multi-stage processing. In the converting span, which encompasses coating, printing, and drying processes,
Hojin Jeon   +6 more
doaj   +1 more source

Robust Decentralized $H_\infty$ Control for a Multi-Motor Web-Winding System

open access: yesIEEE Access, 2019
To deal with the nonlinear coupling, strong disturbances and parametric uncertainties existing in the multi-motor web-winding system, a robust decentralized H∞ control method is proposed in this paper.
Jie Chen, Hailiang Hou, Tongguang Yang
doaj   +1 more source

The Effect of Tension and Drop Height on Contact Angle of Droplet on Flexible Substrate in Roll-to-Roll Systems [PDF]

open access: yes한국정밀공학회지, 2017
This study proposes a method for identifying correlations between tension and drop height for sessile droplets in a roll-to-roll processing system. The effect of tension and drop height on the contact angle of a sessile droplet is presented.
Dongguk Kim, Changwoo Lee
doaj   +1 more source

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