Results 11 to 20 of about 220,339 (337)

Tribological Behavior of Reinforced PTFE Composites and Un-Reinforced Polyketone-Based Materials against Coated Steel

open access: yesLubricants, 2021
In this study, two polymeric materials were tested in a dry rotating “pin-on-disc” configuration against differently coated surfaces, to evaluate their tribological response under conditions, such as those of rotary lip seals, and to identify the wear ...
Federica Amenta   +4 more
doaj   +1 more source

A Community Science Approach to Conservation Challenges Posed by Rebounding Marine Mammal Populations: Seal-Fishery Interactions in New England

open access: yesFrontiers in Conservation Science, 2021
Between 1880–1962, gray and harbor seals were targeted in legal seal bounty hunts across Maine and Massachusetts due to a perceived competition with commercial fisheries.
Andrea Bogomolni   +4 more
doaj   +1 more source

To seal or not to seal

open access: yesBritish Dental Journal, 2019
When an object impacts the free surface of a liquid, it ejects a splash curtain upwards and creates an air cavity below the free surface. As the object descends into the liquid, the air cavity eventually closes under the action of hydrostatic pressure (deep seal).
Eshraghi, Javad   +2 more
openaire   +4 more sources

Spectroscopy and terahertz imaging for sigillography applications [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2011
Sigillography is the science that studies the manifold aspects of the seals. A seal can be defined as an imprint obtained on a malleable medium by imprinting an incised matrix, which transfers on it the characteristic signs of a person or an institution.
Mounaix P.   +5 more
doaj   +1 more source

Study on the Load Carrying Capacity of Sliding Bearing Lubricated by Synthetic Ester Oils

open access: yesTribology Online, 2015
To meet with the latest environmental regulation, as environmentally acceptable lubricant (EAL) in marine field, biodegradable oils based on synthetic ester oils, have been applied to stern tube bearings of many new building vessels since the end of 2013,
Akihiko Yano   +3 more
doaj   +1 more source

Roadside Moss Turfs in South East Australia Capture More Particulate Matter Along an Urban Gradient than a Common Native Tree Species

open access: yesAtmosphere, 2019
Urbanisation largely consists of removing native vegetation. Plants that remain interact with air quality in complex ways. Pollutants can be detrimental to plant growth; plants sometimes reduce air quality, yet some species also improve it through ...
Alison Haynes   +4 more
doaj   +1 more source

Tekstylia i pieczęcie. O relacjach pomiędzy produkcją włókienniczą a praktykami stemplowania w Grecji epoki brązu oraz o zupełnie nowych danych z odcisków glinianych pieczęci

open access: yesPrzegląd Archeologiczny, 2021
This contribution discusses the evidence of textile impressions preserved on the undersides of clay sealings from Bronze Age Greece. A collection of modern casts taken from these sealings, stored in the Corpus der minoischen und mykenischen Siegel in ...
Agata Ulanowska
doaj   +1 more source

Images as proximity sensors : the incidence of conspecific foraging in Antarctic fur seals [PDF]

open access: yes, 2015
Background: Although there have been recent advances in the development of animal-attached ‘proximity’ tags to remotely record the interactions of multiple individuals, the efficacy of these devices depends on the instrumentation of sufficient animals ...
Staniland, Iain J   +10 more
core   +1 more source

The analysis of the main directions for reducing the intensity of mass flows of the working fluid through leaks in the working chamber of a piston long-stroke low-speed compressor stage [PDF]

open access: yesОмский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение"
The working processes and integral characteristics of piston long-stroke low-speed compressor stages are considered. Well-known technologies for increasing the feed rate are considered as objects of comparison: selection of the main dimensions and ...
V. L. Yusha   +2 more
doaj   +1 more source

Detection of Novel Poxvirus from Gray Seal (Halichoerus grypus), Germany

open access: yesEmerging Infectious Diseases, 2023
We detected a novel poxvirus from a gray seal (Halichoerus grypus) from the North Sea, Germany. The juvenile animal showed pox-like lesions and deteriorating overall health condition and was finally euthanized. Histology, electron microscopy, sequencing,
Florian Pfaff   +8 more
doaj   +1 more source

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