Results 1 to 10 of about 22,870 (230)

Static and Dynamic Analysis of Porous Gas Bearings Lubricated With Air, Refrigerant R‐134a, Helium and Hydrogen

Lubrication Science, EarlyView.
ABSTRACT Porous gas bearings (PGBs) enable high‐speed, oil‐free operation in modern rotating machinery. This study develops a coupled thermo‐hydrodynamic (THD) model for a cylindrical porous gas bearing lubricated with four working fluids—air, R‐134a, helium and hydrogen.
S. Bechiri, B. Bouchehit, B. Bou‐Saïd
wiley   +1 more source

On‐Chip Evaluation of Red Blood Cell Deformability Through Transit Velocity Index in Hematological Diseases

Small, EarlyView.
The deformability of red blood cell is essential for smooth microcirculation. We propose a deformability index using a microfluidic platform with capillary‐like constrictions, based on the relationship between cell deformation and transit velocity through the constrictions. Its effectiveness and clinical potential have been demonstrated in applications
Kenji Kajitani, Chia‐Hung Dylan Tsai, Tomohito Ohtani, Shigeo Wada, Ivan Cimrák, Misato Chimura, Tatsunori Taniguchi, Yasutaka Ueda, Jun‐ichi Nishimura, Yasushi Sakata   +9 more
wiley   +1 more source

SPH Modelling of Hydrodynamic Lubrication along Rough Surfaces

Lubricants, 2019
Rough and textured surfaces are of paramount importance for lubrication, both in nature and in technology. While surface roughness relevantly influences both friction and wear, artificial surface texturing improves the performance of slider bearings as ...
Marco Paggi, Andrea Amicarelli, Pietro Lenarda   +2 more
doaj   +1 more source

Europium‐ and dysprosium‐modified strontium aluminate: A luminescent marker system for enhanced gunshot residue detection

Journal of Forensic Sciences, EarlyView.
Abstract Forensic ballistics is essential in analyzing evidence from firearm use in criminal investigations, with gunshot residue (GSR) detection providing key information about the firearm and shooting conditions. Traditional methods like spectroscopy and scanning electron microscopy (SEM) have limitations in sensitivity, cost, and accessibility ...
Paulo Tonin, Cesar Aguzzoli, Sidnei Moura   +2 more
wiley   +1 more source

Sealing Performance of Liquid Films in Composite Textures with Elliptical Dent–Herringbone Groove of Centrifugal Pump

Lubricants
To improve the lubrication stability of centrifugal pump mechanical seals under high-speed and high-pressure conditions, a composite texture combining elliptical dimples and herringbone grooves is proposed.
Xinfu Liu, Cong Wang, Chunhua Liu, Chao Zhou, Zhongxian Hao, Haocai Huang, Shouzhi Huang, Songbo Wei   +7 more
doaj   +1 more source

Investigation on hydrodynamic lubrication effect of micro groove seal in pharmaceutical kettle. [PDF]

PLoS One, 2023
Zhou Y, Cheng X, Sun F, Gong R.
europepmc   +1 more source

Environmentally Friendly Lubricants: The Role of Biopolymers in Modern Tribology

SPE Polymers, Volume 7, Issue 3, July 2026.
Biomass‐derived biopolymers modified for green tribology applications with reduced friction, wear, and environmental footprint. ABSTRACT Energy losses due to friction and wear are a major challenge for the energy efficiency and sustainability of mechanical systems, motivating the development of green tribology strategies.
Zineb Chiki, Salima Ben Tahar, Aurelija Ramanauskaitė, Povilas Mulerčikas, Juozas Padgurskas, Lamcharfi Taj‐dine, Noureddine Idrissi Kandri   +6 more
wiley   +1 more source

MATHEMATICAL MODELING OF DYNAMICS MOVEMENT OF A PISTON SKIRT IN THE CYLINDER OF THE INTERNAL COMBUSTION ENGINE

RUDN Journal of Engineering Research, 2017
There examined method theoretical research of sectional piston skirt hydrodynamic lubrication, and influence of piston and connection rod groups options on it.
S V Smirnov, A R Makarov, A A Vorobyev
doaj   +1 more source

Investigation of Adhesion Properties of Tire-Asphalt Pavement Interface Considering Hydrodynamic Lubrication Action of Water Film on Road Surface. [PDF]

Materials (Basel), 2022
Zheng B, Tang J, Chen J, Zhao R, Huang X.   +4 more
europepmc   +1 more source

Beyond mammals: the evolution of chewing and other forms of oropharyngeal food processing in vertebrates

Biological Reviews, Volume 101, Issue 3, Page 1406-1462, June 2026.
ABSTRACT Oropharyngeal food processing exhibits a remarkable diversity among vertebrates, reflecting the evolution of specialised ‘processing centres’ associated with the mandibular, hyoid, and branchial arches. Although studies have detailed various food‐processing strategies and mechanisms across vertebrates, a coherent and comprehensive terminology ...
Daniel Schwarz, Maja Mielke, Stephan Handschuh, Anthony Herrel, Patrick Lemell, Léa Da Cunha, Nicolai Konow   +6 more
wiley   +1 more source