......................................................................................................................ii DEDICATION .................................................................................................................. iv ACKNOWLEDGMENTS .................................................................................................. v TABLE OF CONTENTS ...............

Sliding friction across a thin soft lubricant film typically occurs by stick slip, the lubricant fully solidifying at stick, yielding and flowing at slip. The static friction force per unit area preceding slip is known from molecular dynamics (MD) simulations to decrease with increasing contact area. That makes the large-size fate of stick slip unclear and unknown; its possible vanishing is imp...

Abstract Lubricants for stern tube systems are subject to increasingly stringent requirements in terms of environmental compatibility, as any lubricant leakage leads contamination the sea. As a result, interest environmentally acceptable lubricants (EALs) is increasing. Biodegradable ester represent possible alternative conventional, mineral oil-based lubricants. In addition compatibility requi...

INTRODUCTION Free or low-cost HIV testing, condoms, and lubricants are foundational HIV prevention strategies, yet are often inaccessible for men who have sex with men (MSM). In the global context of stigma and poor healthcare access, transgender (trans) MSM may face additional barriers to HIV prevention services. Drawing on data from a global survey of MSM, we aimed to describe perceived acces...

Abstract The impact of polycrotonaldehyde, extracted from the waste “Yellow oil” produced during alkaline treatment pyrogas at Shortan gas chemical complex, on its properties lubricants as a dispersed medium and phase after it is added to them have been studied in this paper. It has established that polycrotonaldehyde can be used production lubricants. Based research results, proven addition 2....

Exopolysaccharides produced by a variety of microorganisms find multifarious industrial applications in foods, pharmaceutical and other industries as emulsifiers, stabilizers, binders, gelling agents, lubricants, and thickening agents. One such exopolysaccharide is scleroglucan, produced by pure culture fermentation from filamentous fungi of genus Sclerotium. The review discusses the properties...