Results 111 to 120 of about 5,635 (264)

Ubiquity of Aviation Ultrafine Particles and Lubrication Oil Compounds Near Zurich Airport. [PDF]

Environ Sci Technol
Tinorua S, Brem BT, Decker ZCJ, Slowik JG, Alpert PA, Ammann M, Prévôt ASH, Bauer M, Mishra S, Götsch M, Sintermann J, Gysel-Beer M.   +11 more
europepmc   +1 more source

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

Data-driven wear performance optimization of WAAM aluminum 5356 via intuitionistic fuzzy decision modeling. [PDF]

Sci Rep
Sivam SPSS, Olabisi AS, Kesavan S.
europepmc   +1 more source

Electrochemical Monitoring of Steel Corrosion in NS4 Solution Under Cathodic Protection Environment: Insights of Electrochemical Impedance Spectroscopy

Materials and Corrosion, EarlyView.
Electrochemical impedance spectroscopy (EIS) monitored corrosion on mild steel under cathodic protection in soil‐like conditions. CP reduced corrosion from 410 to 7 µm/yr, shifting the mechanism from mixed activation–diffusion to activation‐controlled, enabling protective calcareous and oxide film formation.
Mandlenkosi George Robert Mahlobo, Tumelo Wordsworth Poloko Seadira, Major Melusi Mabuza, Peter Apata Olubambi   +3 more
wiley   +1 more source

Tribological Performance of Grease-Coated Rubber in High-Pressure Hydrogen Storage Applications. [PDF]

Polymers (Basel)
Ye S, Zhi H, Wu W, Yasin S, Gu C, Shi J, Zeng S.   +6 more
europepmc   +1 more source

Chemically and Mechanically Recyclable Polyolefins Incorporating Covalent Adaptable Networks

Macromolecular Rapid Communications, EarlyView.
Low‐molecular‐weight polypropylene is converted into a crosslinked polyolefin containing a covalently adaptable network. The semicrystalline material remains melt‐processable and mechanically recyclable. Its thermal and mechanical properties are comparable to commercial polyolefins.
Andrii Tiiara, Bernadine Daichendt, Sergiy Minko, Olga Kuksenok, Igor Luzinov   +4 more
wiley   +1 more source

Comparative Study of Wear Behavior of Hypereutectic Al-Si Piston Alloys Using Experimental and Numerical Methods. [PDF]

Materials (Basel)
Tashev A, Nikolov V, Dochev B, Dimova D, Kandeva M, Zagorski M.   +5 more
europepmc   +1 more source

An Improved Air Film Model for Studying the Tilt Characteristics of Aerostatic Thrust Bearings

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT In this study, an improved mass‐spring model that treats the lubricating air film as distributed springs is proposed to calculate the static and dynamic angular stiffness of aerostatic thrust bearings. The proposed model refines the traditional mass‐spring model by introducing the spatially varying mechanical properties of the air film and the
Hui Zhuang, Jianguo Ding, Yu Chang
wiley   +1 more source

Water stress: Opportunities for supply chain research

Production and Operations Management, EarlyView., 2023
Abstract Driven by climate change and overuse, water stress is a worsening sustainability concern that threatens businesses and communities across the globe. Leading global organizations such as the United Nations have expressed an urgent need for sustainable water management strategies across nations and economies.
Dustin Cole, Sriram Narayanan, Elizabeth Connors, Meenu Tewari, Kyle Onda   +4 more
wiley   +1 more source

Oral lubrication and flavor release in myofibrillar protein-based emulsion gel fat substitutes: Arginine-regulated interfacial architecture. [PDF]

Curr Res Food Sci
Ye Y, Li L, Wang L, Zhang L, Zhang Q, Liu H, Xu X, Wang P.   +7 more
europepmc   +1 more source