Results 21 to 30 of about 140 (123)

Thermal acclimatisation to heatwave conditions is rapid but sex-specific in wild zebra finches

open access: yesScientific Reports, 2023
Under climate change, increasing air temperature average and variability pose substantial thermal challenges to animals. While plasticity in thermoregulatory traits could potentially attenuate this impact, whether thermal acclimatisation can occur ...
Anaïs Pessato   +4 more
doaj   +1 more source

Modeling and Analysis of the Composite Stiffness for Angular Contact Ball Bearings

open access: yesShock and Vibration, 2020
As a core component of the motorized spindle, the dynamic stiffness of the angular contact ball bearing directly affects the dynamic characteristics of machinery.
Jianhua Li   +4 more
doaj   +1 more source

Hydrothermal Degradation of Enzymatic Hydrolysis Lignin in Water-Isopropyl Alcohol Co-Solvent

open access: yesBioResources, 2016
The effect of hydrothermal conditions on enzymatic hydrolysis lignin (EHL) degradation in water-isopropyl alcohol co-solvent and optimal conditions were investigated.
Zhuoming Ma   +3 more
doaj   +1 more source

Oil Film Stiffness of Double Involute Gears Based on Thermal EHL Theory

open access: yesChinese Journal of Mechanical Engineering, 2021
Lubrication failure is one of the main failure forms of gear failure. Time varying meshing stiffness is an important factor affecting the dynamic behavior of gears.
Zhaoming Yin, Zhimin Fan, Feng Jiang
doaj   +1 more source

Experimental Analysis of Rolling Torque and Thermal Inlet Shear Heating in Tapered Roller Bearings

open access: yesMachines, 2023
The investigation in this article focuses on the rolling resistance torque and thermal inlet shear factor in tapered roller bearings (TRBs) through systematic experiments using a modular test setup.
Manjunath Manjunath   +3 more
doaj   +1 more source

A Data-Driven Approach to Estimate the Power Loss and Thermal Behaviour of Cylindrical Gearboxes under Transient Operating Conditions

open access: yesLubricants, 2023
This paper proposes an innovative methodology to estimate the thermal behaviour of the cylindrical gearbox system, considering, as a thermal source, the power loss calculated under transient operating conditions. The power loss of the system in transient
Matteo Autiero   +3 more
doaj   +1 more source

Efficient Screening of Organic Singlet Fission Molecules Using Graph Neural Networks

open access: yesAdvanced Science, EarlyView.
A high‐throughput screening framework based on graph neural networks (GNNs) and multi‐level validation facilitates the identification of singlet fission (SF) candidates. By efficiently predicting excitation energies across 20 million molecules, and integrating TDDFT calculations, synthetic accessibility assessments, and GW+BSE calculations, this ...
Li Fu   +5 more
wiley   +1 more source

Recent progress and challenges in top‐emitting quantum dot light‐emitting diodes

open access: yesFlexMat, EarlyView.
This review summarizes recent advances in top‐emitting quantum‐dot light‐emitting diodes (TE‐QLEDs), including device architectures, microcavity engineering, angular‐emission management, and operational stability, highlighting optical–electrical–thermal co‐optimization as the key pathway toward reliable, high‐performance TE‐QLEDs. Abstract Top‐emitting
Chengyi Chen   +6 more
wiley   +1 more source

Dynamic Characteristics Analysis of a Large Wind Turbine Gearbox Supported by Journal Bearings Under Different Lubrication States

open access: yesWind Energy, Volume 29, Issue 9, September 2026.
ABSTRACT Due to their superior load density, planetary gear journal bearings (PGJB) are progressively replacing rolling element bearings in wind turbine gearboxes; therefore, accurately revealing the dynamic characteristics of drivetrains supported by these bearings under variable operating conditions is crucial for ensuring operational reliability ...
Pengcheng Jin   +3 more
wiley   +1 more source

Effects of Oil Supply Condition on Spinning–Sliding EHL

open access: yesLubricants, 2023
An optical interference test rig with spinning elastohydrodynamic lubrication (EHL) was established to investigate the spinning lubrication performance under different oil-supply conditions.
Wei Li   +5 more
doaj   +1 more source

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