Results 101 to 110 of about 270,247 (224)

Optimizing Atmospheric Pressure Plasma Surface Treatment of Polymer Melts to Achieve Adhesion‐Promoter Free Multilayer Films

open access: yesPolymer Engineering &Science, EarlyView.
Atmospheric‐pressure plasma treatment of the polyethylene melt at the die exit enables direct joining with a polyamide melt without adhesion promoters. After process optimization, the peel strength of the PE/PA laminates increased from 0.03 to 2.92 N/mm.
Jonas Gaide   +2 more
wiley   +1 more source

The Role of Microslip for Freely Rolling Bodies

open access: yes, 1965
The energy required to roll a sphere in a cylindrical groove is shown to be partly a hysteresis loss and partly a microslip loss. Data for three different sphere-groove combinations are separated into the two types of losses by comparison with data for ...
R. C. Drutowski
core   +1 more source

Molecular Basis for Uracil‐DNA‐Glycosylase to Identify DNA Damage in the Nucleosome

open access: yesProteins: Structure, Function, and Bioinformatics, EarlyView.
ABSTRACT The DNA base‐excision repair (BER) pathway is initiated by a glycosylase, such as uracil‐DNA‐glycosylase (UDG), which identifies and removes a wrong base incorporated in the DNA sequence. The very early steps in the identification of the DNA damage are crucial to the correct initiation of the repair chain, and become even more complex when ...
Safwen Ghediri   +2 more
wiley   +1 more source

Study on the Dynamic Problems of Double-Disk Rotor System Supported by Deep Groove Ball Bearing

open access: yesShock and Vibration, 2019
Aiming at the analysis of the dynamic characteristics of the rotor system supported by deep groove ball bearings, the dynamic model of the double-disk rotor system supported by deep groove ball bearings was established.
Yang Liu   +5 more
doaj   +1 more source

Linear System Identification and Control of a Low‐Cost High‐Performance Omnidirectional Marine Surface Vehicle for Swarming Applications

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT Marine operations traditionally rely on human intervention, a costly and disruptive method. Autonomous surface vehicles (ASVs) offer a powerful alternative, capable of operating autonomously, for extended periods, and with various sensors for various missions.
Ayman El Qemmah   +4 more
wiley   +1 more source

Stair‐Climbing Wheelchairs for Enhanced Mobility: A Comprehensive Review of Fundamental Mechanisms, Design Concepts, and Performance Analysis

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT People with physical disabilities face significant mobility challenges while climbing uneven surfaces and staircases. In these circumstances, traditional wheelchairs do not provide stable, safely controlled mobility, underscoring the importance of building superior stair‐climbing wheelchairs for both medical and infrastructure purposes.
Gopisetti Manikanta   +10 more
wiley   +1 more source

Realization of Rolling Bearing Serialization based on CREO Platform

open access: yesJixie chuandong, 2015
For improving interchangeability of bearing product,the method of rolling bearing serializing design is researched under the environment of CREO. The parametric CAD model template of deep groove ball bearing 6208 is designed,and then the structural ...
Qiu Haifei
doaj  

Three‐Dimensional Piezoelectric Fibrous Constructs for Muscle Regeneration

open access: yesSmall, EarlyView.
This study fabricates 3D piezoelectric PHBV scaffolds to enhance muscle regeneration by systematically tuning electrospinning parameters. Introducing porosity yields a 25‐fold enhancement in the effective piezoelectric coefficient (d33). A highly effective d33 signal, activated by cellular tension and fiber deformation, significantly improves myogenic ...
Xenofon Karagiorgis   +14 more
wiley   +1 more source

Comparison of 4-ball and 5-ball rolling contact fatigue tests on lubricated Si3N4/steel contact [PDF]

open access: yes, 2003
Accelerated four-ball and five-ball rolling tests were performed on HIPed Si3N4 ball samples (rough lapped with surface roughness value Ra0.08 μm and Rq0.118 μm) in fully lubricated condition.
Kang, J, Hadfield, M
core   +1 more source

Mechanics of h-beam rolling process in universal grooves [PDF]

open access: yes, 2014
Formulation and solution of the problem for estimation of metal forming integral characteristics (flange spread) and energy-power parameters (power, torque, force) on the beam rolling in universal groove using the principle of total power minimum is ...
Шварц, Д. Л.   +2 more
core  

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