Results 61 to 70 of about 11,312,526 (253)

Chatter Control by Spindle Speed Variation in High-Speed Milling [PDF]

open access: yes, 2009
High-speed milling operations are often limited by regenerative vibrations. The aim of this paper is to analyze the effect of spindle speed variation on machine tool chatter in high-speed milling. The stability analysis of triangular and sinusoidal shape
Arnaud, Lionel   +3 more
core   +1 more source

Obstacle‐Immune Microwave Wireless Power Transfer System Based on Amplitude‐Dependent Caustic Metasurface

open access: yesAdvanced Science
Rapid advances in the Internet of Everything (IoE) drive microwave wireless power transfer (MWPT) technology for charging wireless smart devices. However, environmental obstacles and safety concerns associated with high‐power transmission present new ...
Song Zhang   +7 more
doaj   +1 more source

High-Frequency Analysis of Intercalated Multilayer Graphene (IMLG) and Implication for Tunable Terahertz Resonator Design

open access: yesIEEE Access, 2017
Hexagonal boron nitride intercalated multilayer grapheme (hBN-IMLG) promises one of the potential materials for high performance tunable passive components in terahertz (THz) band, due to its good electrical properties and impressive tunability with ...
Xiang Li, Lin-Sheng Wu, Jun-Fa Mao
doaj   +1 more source

Effectiveness of Resistance Intradialytic Exercise Compared to Aerobic Intradialytic Exercise for Patients With Chronic Kidney Disease: A Randomized Controlled Clinical Trial

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Patients with chronic kidney disease undergoing hemodialysis commonly experience reduced physical function, fatigue, poor sleep quality, and impaired health‐related quality of life. Intradialytic exercise has been proposed as a non‐pharmacological strategy to improve these outcomes.
Klebson da Silva Almeida   +6 more
wiley   +1 more source

Speed Choice, Speed Preference and Risk Perception: Relevance for the Problem of Speed Variability in Traffic [PDF]

open access: yes, 2014
Fifty percent of drives have been found to frequently violate speed limits (OECD/ECMT, 2006), and speed limit compliance appears to depend on the perceived credibility of a road’s speed limit (Goldenbeld & van Schagen, 2007). Credibility of speed limits,
Ahie, Liv Marit
core  

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

open access: yes, 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   +4 more
core   +1 more source

Mechanical properties analysis of the interspersed replacement of timber sleepers with bamboo-based composite sleepers on open bridge deck

open access: yesScientific Reports
Due to the discrete deterioration characteristics of timber sleepers on open bridge deck, continuous replacement is difficult. New bamboo-based composite sleepers (BCSs) offer excellent performance at a low price, making them an ideal alternative to ...
Peng Chen   +4 more
doaj   +1 more source

Serum Myonectin Levels Are Positively Associated With Physical Function and Lower Frailty‐Related Limitation in Maintenance Hemodialysis Patients: A Cross‐Sectional Study

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Maintenance hemodialysis (MHD) patients frequently suffer from frailty, characterized by reduced physical function and poor prognosis. Myokines, such as myonectin, secreted by muscle, are emerging regulators of systemic health. This study investigated the relationship between serum myonectin, adipokines (adiponectin, omentin), and ...
Kenichi Kono   +7 more
wiley   +1 more source

A conceptual design methodology for low speed high altitude long endurance unmanned aerial vehicles [PDF]

open access: yes, 2000
A conceptual design methodology was produced and subsequently coded into a Visual C++ (GUI) environment to facilitate the rapid comparison of several possible configurations to satisfy High Altitude Long Endurance (FIALE) unmanned aircraft (UAV ...
Altman, Aaron
core   +4 more sources

Multiple orbital angular momentum modes conversion with transmission metasurface

open access: yesAIP Advances
The orthogonal properties between different orbital angular momentum (OAM) modes of vortex beams have made it a great potential research area in recent years. Manipulating OAM modes is crucial in most research studies and applications of vortex waves. In
Sitong He   +6 more
doaj   +1 more source

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