Results 31 to 40 of about 2,750,886 (215)

3D Closed‐Loop Navigation of Magnetic Microswimmers Using Vision‐Derived Depth Feedback

Advanced Intelligent Systems, EarlyView.
A planar magnetic microswimmer is navigated in three dimensions under a standard microscope. Image defocus supplies a real‐time depth cue, and model‐predictive control with A* planning steers the body on surfaces and in free swimming. Axial position is regulated by propulsion alone, without magnetic field gradients or extra cameras.
Yasin Cagatay Duygu, Sangwon Lee, Min Jun Kim   +2 more
wiley   +1 more source

Deep Neural Network Tool Chatter Model for Aluminum Surface Milling Using Acoustic Emmision Sensor

MATEC Web of Conferences, 2018
Chatter is a self-excited vibration in any machining processes which contributes to the system instability due to resonance and resulting in an inaccuracy in machining product.
Abul Hasan M., Abu-Bakar Muhamad-Husaini, Razuwan Rizal, Nazri Zainal   +3 more
doaj   +1 more source

Dietary Glutamine Supplementation Alleviated Rumen Epithelium Oxidative Damage and Apoptosis Induced by Feed Restriction via Maintaining Mitochondrial Homeostasis in Female Yaks

Animal Research and One Health, EarlyView.
Dietary glutamine (Gln) supplementation increased the ATP levels and promoted cell proliferation in the rumen epithelium of feed‐restricted yaks. Besides, Gln inhibited ROS accumulation and reduced oxidative damage and apoptosis in the rumen epithelium of feed‐restricted yaks.
Ziqi Yue, Shanpeng Ke, Liyuan Shi, Rui Hu, Zhisheng Wang, Quanhui Peng, Huawei Zou, Jianxin Xiao, Yahui Jiang, Fali Wu, Yiping Tang   +10 more
wiley   +1 more source

Prediction, detection, and suppression of regenerative chatter in milling

Advances in Mechanical Engineering, 2022
In metal cutting processing, especially in the processing of low-rigidity workpieces, chatter is a key factor affecting many aspects such as surface quality, processing efficiency and tool life.
Bo Liu, Changfu Liu, Xinli Yu, Yang Zhou, Daohai Wang   +4 more
doaj   +1 more source

Chatter detection for milling using novelp-leader multifractal features

, 2020
Chatter in machining results in poor workpiece surface quality and short tool life. An accurate and reliable chatter detection method is needed before its complete development.
Hou, Liang, Chen, Ding, Chen, Yun, Bu, Xiangjian, Li, Huaizhong, Ye, Shaogan   +5 more
core   +1 more source

Genetic Diversity, Adaptation, Wild Introgression, and Coat Color Mutation of Golden Yak

Animal Research and One Health, EarlyView.
Genetic diversity, adaptation, wild introgression, and coat color mutation of golden yak from two populations on the Qinghai‐Xizang Plateau. ABSTRACT The golden yak lives on the Qinghai‐Xizang Plateau with a golden coat and adapts to high altitudes and strong ultraviolet environment. The golden coat is a prominent phenotype in many domesticated species,
Huixuan Yan, Jialei Chen, Chuzhao Lei, Fengwei Zhang, Shunzhong He, Weiru Song, Hongyan Ma, Shuling Li, Guomei Li, Laba Yongcuo, Jianlin Han, Johannes A. Lenstra, Qiang Zhang, Rende Song, Basang Wangdui, Ningbo Chen   +15 more
wiley   +1 more source

Chatter Detection in Thin-Wall Milling Based on Multi-Sensor Fusion and Dual-Stream Residual Attention CNN

Machines
Thin-walled parts exhibit high flexibility, rendering them susceptible to chatter during milling, which can significantly impact machining accuracy, surface quality, and productivity. Therefore, chatter detection plays a crucial role in thin-wall milling.
Danian Zhan, Dawei Lu, Wenxiang Gao, Haojie Wei, Yuwen Sun   +4 more
doaj   +1 more source

On the stability of high-speed milling with spindle speed variation [PDF]

, 2010
Spindle speed variation is a well-known technique to suppress regenerative machine tool vibrations, but it is usually considered to be effective only for low spindle speeds.
Arnaud, Lionel, Insperger, Tamás, Peigné, Grégoire, Seguy, Sébastien, Dessein, Gilles   +4 more
core   +1 more source

MicroRNA‐Seq Analysis Reveals a Critical Role for miR‐222 in Bovine Intramuscular Adipogenesis via the DDIT4/mTORC1 Axis

Animal Research and One Health, EarlyView.
Schematic diagram illustrating how miR‐222 promotes bovine intramuscular adipogenesis by targeting DDIT4 to activate the mTORC1 signaling pathway. ABSTRACT Intramuscular fat (IMF) is a key determinant of beef quality, particularly with respect to tenderness, flavor, and juiciness.
Jianbing Tan, Liang Qiu, Zhenghai Zhou, Zhipeng Zhang, Nanfei Wang, Jiangang Hao, Linsen Zan, Wucai Yang   +7 more
wiley   +1 more source

Experimental and simulation study on chatter stability region of integral impeller with non-uniform allowance

Science Progress, 2020
In order to accurately improve and predict chatter stability region of machining process, an optimization method of machining process with non-uniform allowance of integral impeller was proposed.
Yan Wu, Kaifa Wang, Gang Zheng, Boxin Lv, Yong He   +4 more
doaj   +1 more source