Due to routine maintenance of aircraft on the concrete pavement at army airbases, a large part surface is often found saturated with different hydrocarbon-based oil, fuel, and fluid. In addition, subjected aircraft’s exhaust temperature during operation. This study examined resistance ability 3 cementitious materials: (i) epoxy, (ii) fly ash (FA) based geopolymer various alkali (AL/FA) ratios (...

BACKGROUND Men who have sex with men (MSM) are at high risk for HIV acquisition and transmission. There is a high HIV-transmission potential associated with unprotected anal intercourse (UAI), which requires sexual lubrication for comfortable, non-traumatic anal sex. Lubricant distribution remains poor in many developing nations and MSM have been known to substitute a number of common household...

Background: Perineal traumas particularly caused by following vaginal delivery are associated with short and long term morbidity for women. Therefore, interventions that increase the probability of intact perineum are necessary. The aim of study was to determine the effect of perineal massage with a sterile lubricant on the incidence of episiotomy and perinea laceration. Materials: This clinica...

Fourier transform infrared FTIR spectroscopy has found an important analytical niche in the field of condition monitoring CM of lubricants, lubricant quality being a primary determinant of the wear and operational efficiency of engines and machinery. The ability to track a wide range of functional groups associated with chemical changes in lubricants by FTIR spectroscopy allows the overall qual...

Various bacterial strains (e.g., strains belonging to the genera Bacillus, Paenibacillus, Serratia, and Salmonella) exhibit colonial branching patterns during growth on poor semisolid substrates. These patterns reflect the bacterial cooperative self-organization. A central part of the cooperation is the collective formation of a lubricant on top of the agar which enables the bacteria to swim. H...

Some designs of total disc replacement devices have articulating bearing surfaces, and these devices are tested in vitro with a lubricant of diluted calf serum. It is believed that the lubricant found in total disc replacement devices in vivo is interstitial fluid that may have properties between that in Ringer's solution and diluted calf serum. To investigate the effect of lubricants, a set of...

PURPOSE To determine the effects of lubrication of the vaginal speculum before insertion during a Papanicolaou test on perceived pain and quality of the cytology specimen. METHODS Four hundred eligible women participating in cervical cancer screening and an early detection program were randomized with respect to lubricant gel use before speculum insertion. Perceived pain during speculum inser...

PURPOSE To compare the use of lubricant gel with lidocaine versus lubricant gel without anesthetic in flexible cystoscopy in terms of pain and tolerability. MATERIALS AND METHODS In this observational non-randomized study, 72 patients were divided into two groups. Group 1 included 38 patients in whom lidocaine gel 2% was used and group 2 included 34 patients in whom lubricant gel without anes...

A study investigating the effect of sheet surface condition on resistance spot welding (RSW) of aluminium has been carried out at the University of Warwick. This concentrates on two commercial automotive aluminium alloys; AA5754 and AA6111, used for structural and closure applications respectively. The results show the marked effect that surface condition can have on the RSW process. For AA5754...

A thermohydrodynamic (THD) analysis of turbulent flow in journal bearings is presented based on the computational fluid dynamic (CFD) techniques. The bearing has infinite length and operates under incompressible and steady conditions. In this analysis, the numerical solution of Navier-Stokes equations with the equations governing the kinetic energy of turbulence and the dissipation rate, couple...