Results 31 to 40 of about 36,161 (264)

Analysis of Influence of the Load Plane Combined with Preload on Durability of Bearing

Communications, 2022
Angular ball bearings are commonly used whenever there is a demand to increase stiffness of a bearing. The aforementioned increase of stiffness can be achieved by obtaining proper preload in bearings. In common belief, preload has a negative consequence:
Jaroslaw Kaczor
doaj   +1 more source

Multistage, Self‐Sensing Artificial Muscles With Coordination From Liquid Crystal Elastomer‐Graphene Composite Fibers

Advanced Functional Materials, EarlyView.
Inspired by skeletal muscles’ precision and endurance, CoilLCE integrates a self‐sensing liquid crystal elastomer/graphene artificial muscle with an embedded Joule‐heating copper coil, enabling closed‐loop multistage actuation with programmable intermediate states (strain accuracy of 2%), and antagonistic coordination (32% total strain). These features
Ziyun Zhang, Xuelin Wu, Yinding Chi, Qingya Huang, Yaoye Hong, Antonio Proctor Martinez, Jingxian Wu, Bingzhi He, Cynthia Sung, Shu Yang   +9 more
wiley   +1 more source

Dynamic signal analysis based monitoring for ball screws preload deterioration

Measurement: Sensors
The ball screw feed system has been an important part of precision machinery and machine tools. Its preload degradation affects machining accuracy and the issue should be first coped with per manufacturers’ suggestion.
Cheng-Liang Tsai, Min-Chun Pan
doaj   +1 more source

A Platform for Assessing Cellular Contractile Function Based on Magnetic Manipulation of Magnetoresponsive Hydrogel Films

Advanced Science, 2023
Despite significant advancements in in vitro cardiac modeling approaches, researchers still lack the capacity to obtain in vitro measurements of a key indicator of cardiac function: contractility, or stroke volume under specific loading conditions ...
Moran Yadid, Mario Hagel, Megan Beldjilali Labro, Baptiste Le Roi, Carina Flaxer, Eli Flaxer, A. Ronny Barnea, Shai Tejman‐Yarden, Eric Silberman, Xin Li, Rossana Rauti, Yael Leichtmann‐Bardoogo, Hongyan Yuan, Ben M. Maoz   +13 more
doaj   +1 more source

Comparative evaluation of an automated preloaded delivery system with a non-preloaded system

Indian Journal of Ophthalmology, 2022
Purpose: To evaluate a single surgeon’s experience with an automated preloaded intraocular lens (IOL) delivery system and a nonpreloaded system. Methods: This was a prospective, observational case series.
openaire   +3 more sources

Microscale Patterning of Ultrahigh‐Viscosity Metallic‐Polymer Composites via Embedded Droplet Writing

Advanced Functional Materials, EarlyView.
A hybrid additive manufacturing platform integrates direct droplet writing of metallic composite with VAT photopolymerization to fabricate architected soft magnetic composites. This approach enables microscale patterning of high‐viscosity materials for programmable actuators, adaptive fluidic devices, and switchable adhesives, offering tunable ...
Yeowon Yoon, Jian Ni, Sungmo Park, Yang Xu, Yong Chen   +4 more
wiley   +1 more source

Water‐Activated Phospholipid Phase‐Separation Gel as an Immunomodulatory Anti‐Adhesion Barrier for Postoperative Adhesion Prevention

Advanced Healthcare Materials, EarlyView.
A water‐activated phospholipid phase‐separation gel is repurposed as a drug‐free surgical barrier for postoperative adhesion prevention. Propylene glycol promotes rapid lamellar gel reinforcement, prolonged local retention, and tissue coverage, while phosphatidylcholine‐mediated immunomodulation suppresses inflammatory and fibrotic responses. This dual‐
Jong‐Ju Lee, Yulseung Sung, Yeji Kim, Heesang Yang, Suyeon Pyo, Byeol Yun, Sung‐Joo Hwang   +6 more
wiley   +1 more source

Myocardial Energy Response to Glyceryl Trinitrate: Physiology Revisited

Frontiers in Physiology, 2021
Objective: Although intravenous nitrates are commonly used in clinical medicine, they have been shown to increase myocardial oxygen consumption and inhibit complex IV of the electron transport chain.
William D. Watson, Peregrine G. Green, Peregrine G. Green, Ladislav Valkovič, Ladislav Valkovič, Neil Herring, Stefan Neubauer, Oliver J. Rider   +7 more
doaj   +1 more source

Protein‐Polymer Dynamic Hydrogels Utilizing Native Ligand Binding for Injectable Therapeutic Delivery and 3D Printing

Advanced Healthcare Materials, EarlyView.
Dynamic nanocolloidal hydrogels were synthesized via the co‐assembly of ligand‐modified spheroidal hyperbranched poly(glycerol) (HPG) and soluble albumin nanoparticles (SANs). Co‐assembly occurred through self‐association of the HPG, as well as its interaction with SANs via native ligand binding.
S. Cem Millik, Yonghui Wang, Kefan Song, Jessica M. Snyder, LeAnn Le, Lauren G. Brown, Shanny Hsuan Kuo, Ashleigh B. Theberge, Suzie H. Pun, Alshakim Nelson   +9 more
wiley   +1 more source

Prediction of preload dependency using phenylephrine-induced peripheral perfusion index during general anaesthesia: a prospective observational study

BMC Anesthesiology
Background Tracking preload dependency non-invasively to maintain adequate tissue perfusion in the perioperative period can be challenging.The effect of phenylephrine on stroke volume is dependent upon preload.
Yusuke Iizuka, Koichi Yoshinaga, Shizuka Amitani, Seiya Nishiyama, Kentaro Fukano, Keika Miyazawa, Asuka Kitajima, Ikumi Sawada, Yuji Otsuka, Masamitsu Sanui   +9 more
doaj   +1 more source