Results 41 to 50 of about 10,163 (249)
PREVENTION OF SLIP ACCIDENTS BY USING RUBBER FLOOR MAT [PDF]
Journal of the Egyptian Society of Tribology, 2012 There is an increasing demand to eliminate slip and fall in bathrooms. Wet ceramic surfaces usually promote slips and occasionally lead to indoor accidents. The present work aims to test the frictional behaviour of rubber mats made of recycled rubber and
M. K. Mohamed +2 more
doaj +1 more source
Decembrists Exonerated by Investigative Commission: Sublieutenant A. M. Golitsyn
Научный диалогThis publication focuses on a topic that has not been covered by historiography — the Decembrists who were found to be uninvolved with secret societies during their trial process.
P. V. Ilyin
doaj +1 more source
INFLUENCE OF MAGNETIC FIELD ON THE SLIDING OF STEEL AGAINST LUBRICATED POLYAMIDE [PDF]
Journal of the Egyptian Society of Tribology, 2012 The present work investigates the influence of magnetic field on the friction coefficient displayed by sliding of steel pin on polyamide disc lubricated by paraffin oil and dispersed by different lubricant additives such as zinc dialkyldithiophosphates ...
H. Zaini +3 more
doaj +1 more source
Cooperation: The Secret Society of Sperm [PDF]
Current Biology, 2010 In the epic race for the egg, sperm have evolved cooperative teams that swim together. New research shows that some do even more: sperm seek out and swim with their relatives.
Foster, K, Pizzari, T
openaire +2 more sources
FRICTION COEFFICIENT OF RUBBER SLIDING AGAINST FLOORING MATERIALS [PDF]
Journal of the Egyptian Society of Tribology, 2011 The friction coefficient of rubber sliding against different types of flooring materials of different surface roughness was investigated under different sliding conditions: dry, water, water/detergent dilution, oil, water/oil dilution.
Y. M. El-Sherbiny +2 more
doaj +1 more source
Pavel Rennenkampf: Unnoticed Decembrist Conspirator
Научный диалогThis article addresses the misidentification of Colonel Pavel Rennenkampf, a member of the Southern Decembrist conspiracy and a colonel in the General Staff (1790-1857), by historians.
P. V. Ilyin
doaj +1 more source
Cybergeo, 2000 The Chinese Overseas form what one estimates to be the world's wealthiest diaspora. They progressively settled throughout the world for more than fifteen centuries, a migratory phenomenon still unmatched.
Pierre-Arnaud Chouvy
doaj +1 more source
DETERMINING THE OPERATING TIME OF THE ENGINE OILS [PDF]
Journal of the Egyptian Society of Tribology, 2010 The environment of Arab countries suffers from the relatively high concentration of dust in air, due to the lack of rain and the vast area of desert, which causes an increase in wear rate of engines. Consequently, the period of lubricating oil change has
O. A. Elhabib +3 more
doaj +1 more source
FRICTION COEFFICIENT OF RUBBER SLIDING AGAINST DUSTY INDOOR FLOORING [PDF]
Journal of the Egyptian Society of Tribology, 2010 It is well known that in Middle East airborne contaminant levels are particularly high. During severe storm conditions dust concentrations of the order of 100 to 500 times higher may be encountered.
A. M. Samy, W. Y. Ali, Y. M. El-Sherbiny
doaj +1 more source
Redescription of the Triassic cynodont Cistecynodon parvus and reassessment of its phylogeny
The Anatomical Record, EarlyView.Abstract Cynodontia is an important subclade of Therapsida that first occurred in the late Permian. It includes extinct subclades which are the non‐mammaliaform cynodonts and Mammaliaformes, with the latter ultimately giving rise to crown mammals. The systematics of non‐mammaliaform cynodonts has been extensively studied and is relatively well‐resolved,
Erin S. Lund +4 more
wiley +1 more source