Results 41 to 50 of about 7,125,299 (256)

A note on flow regimes and churning loss modeling

open access: yes, 2011
International audienceThe purpose of this study is to investigate the various fluid flow regimes generated by a pinion running partly immersed in an oil bath and the corresponding churning power losses. In a series of papers, the authors have established
Velex, Philippe   +3 more
core   +2 more sources

Transmission loss allocation through a modified Ybus [PDF]

open access: yes, 2005
A methodology to allocate the active power transmission loss among agents of a power pool is proposed. The approach is based on the inclusion of the admittances equivalent to bus power injections in the bus admittance matrix.
Daniel, JS, Irving, MR, Salgado, RS
core   +1 more source

Sex‐Stratified Association of Regional Dopamine Transporter Binding With Disease Progression in Amyotrophic Lateral Sclerosis

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To clarify the clinical relevance of dopamine transporter single‐photon emission computed tomography (DAT‐SPECT) abnormalities in amyotrophic lateral sclerosis (ALS), with a prespecified focus on sex‐stratified associations with disease progression and short‐term prognosis.
Tomoya Kawazoe   +7 more
wiley   +1 more source

Simulation and experimental study of influences of shape of roller on the lubrication performance of precision speed reducer

open access: yesEngineering Applications of Computational Fluid Mechanics, 2020
This paper presents a study to investigate the effects of the shape of rollers in high precision enveloping speed reducer on the reducer’s lubrication performance. Theoretical models for the precision speed reducer with cylindrical and conical rollers as
Xingqiao Deng   +3 more
doaj   +1 more source

T1 Over Squared Proton Density Ratio to Characterize Multiple Sclerosis Lesions

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Differentiating remyelinated from demyelinated lesions in MS remains challenging without histological confirmation. This study introduces the T1‐to‐PD2 ratio (TPR) imaging approach and evaluates its ability to characterize MS lesions alongside other quantitative MRI (qMRI) metrics. Methods Thirty individuals with MS (mean age: 47.5 ± 
Sarah J. Wright   +10 more
wiley   +1 more source

Numerical Simulation and Experimental Verification of the Two-phase Flow Characteristic of the Automotive Gear

open access: yesJixie chuandong, 2019
Aiming at the two-phase flow characteristics of the automotive gear, based on the PLIC-VOF algorithm, the three-dimensional churning process model of the gear is numerically calculated by Matlab software.
Zou Lin Du Mingya Jia Bing Xu Jinli
doaj  

Study on the Thermal Distribution Characteristics of High-Speed and Light-Load Rolling Bearing Considering Skidding

open access: yesApplied Sciences, 2018
Skidding, which frequently occurs in high-speed rolling bearings, has a significant effect on the thermal distribution and service reliability of the bearings. An improved theoretical model of friction power loss distribution in high-speed and light-load
Junning Li, Jiafan Xue, Zhitao Ma
doaj   +1 more source

Lubrication Reliability and Oil Churning Loss of Differential Gear Trains in a Mechanical-Hydraulic Coupling Mechanism [PDF]

open access: yes
A differential gear train (DGT) is a crucial component of a mechanical-hydraulic coupling mechanism. The transmission process generates oil churning losses, which significantly impact the overall transmission efficiency. Due to the complexity of DGTs and
Niu, Hao   +5 more
core   +1 more source

1996 Wholesale Power and Transmission Rate Schedules. [PDF]

open access: yes, 1996
Bonneville Power Administration`s (BPA) 1996 Wholesale Power Rate Schedules, 1996 Ancillary Products and Services Rate Schedule, 1996 Transmission Rate Schedules, and General Rate Schedule Provisions, contained herein, were approved on an interim basis ...
United States. Bonneville Power Administration.
core   +1 more source

Human Resources Churning

open access: yes, 2023
The term churning is defined by a multifaceted approach and is quite a complex concept that has been gaining relevance in the field of human resources, due to the problematic loss of investment, originating from the voluntary exits of worker-associated ...
Pedro Miguel Alves Ribeiro Correia   +1 more
core   +1 more source

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