Results 101 to 110 of about 114,827 (292)
LubricantsThis study systematically investigates the structure–performance relationship of PMA (PolyMethacrylate) viscosity index improvers in new energy vehicle (NEV) transmission fluids. We developed an integrated analytical framework combining spectroscopic and
Jinglin Yin +5 more
doaj +1 more source
Measuring Kinematic Viscosity of Engine Oils: A Comparison of Data Obtained from Four Different Devices. [PDF]
Sensors (Basel), 2021 Wolak A, Zając G, Słowik T.
europepmc +1 more source
Type I Planet Migration in Nearly Laminar Disks
, 2008 We describe 2D hydrodynamic simulations of the migration of low-mass planets ($\leq 30 M_{\oplus}$) in nearly laminar disks (viscosity parameter $\alpha < 10^{-3}$) over timescales of several thousand orbit periods. We consider disk masses of 1, 2, and 5
Baruteau +19 more
core +1 more source
Wearable Metamaterials with Embodied Intelligence for Programmable Control of Human Limbs Tremor
Advanced Intelligent Systems, EarlyView.Resulting from alternating muscle contractions, tremors can severely limit human ability to perform everyday tasks like walking or talking, due to their disruptive nature. Medication and surgery may not always effectively address tremor control. A wearable device embodying programmable smart metamaterials with adaptable intelligence to meet the demand ...
Braion Barbosa de Moura +2 more
wiley +1 more source
BioResourcesXanthoceras sorbifolium Bunge oil exhibits favorable characteristics such as excellent low temperature fluidity, high flash point, and degradability.
Kai Zhang +9 more
doaj +2 more sources
Advanced Intelligent Systems, EarlyView.Musculoskeletal humanoids exhibit rich biomechanical properties that remain insufficiently unified in prior discussions. This article systematically categorizes muscle characteristics into five properties: redundancy, independency, anisotropy, variable moment arm, and nonlinear elasticity, and analyzes their combined effects on control.
Kento Kawaharazuka +2 more
wiley +1 more source
Evaluation of Fretting Protection Property of Lubricating Grease Applied to Thrust Ball Bearing
Tribology Online, 2010 Fretting wear is often the case when ball-and-roller bearings oscillate under grease lubrication. Against the backdrop of fretting wear on the wheel bearings of automobiles caused by rail transportation, the ASTM D4170 fretting test method was developed ...
Akihiko Yano +4 more
doaj +1 more source
Swimming of a sphere in a viscous incompressible fluid with inertia
, 2016 The swimming of a sphere immersed in a viscous incompressible fluid with inertia is studied for surface modulations of small amplitude on the basis of the Navier-Stokes equations.
Felderhof, B. U., Jones, R. B.
core +1 more source
Multimodal Locomotion of Soft Robots
Advanced Intelligent Systems, EarlyView.This review comprehensively surveys recent advances in multimodal locomotion within soft robotics. Typical locomotion modes are summarized and categorized. Furthermore, the underlying mechanisms enabling multimodal locomotion are discussed and classified into three primary categories: active control‐based, reconfiguration‐based, and environment ...
Zihao Yuan +4 more
wiley +1 more source
Contact Force Estimation of Continuum Robots without Embedded Sensors: A Review
Advanced Intelligent Systems, EarlyView.This review surveys methods for estimating contact forces in continuum robots without embedded sensors. It explains why contact force matters, classifies force patterns, and groups existing methods into three approaches based on actuation, deformation, and environment information.
An Hu, Yu Sun
wiley +1 more source