Greases have a variety of advantages when special operating conditions apply for gear lubrication, e.g.improved properties against continuous (or slow speed) wear.Often, gears with different surface hardness are combined, in order to reduce costs during manufacturing and heat treatment.However, this has detrimental effect on the wear lifetime.Conse
BackgroundRheumatic heart disease (RHD) poses a major disease burden among disadvantaged populations globally.It results from acute rheumatic fever (ARF), a complication of Group A Streptococcal (GAS) infection.These conditions are acknowledged as diseases of poverty, however the role of specific social and environmental factors in GAS infection an
Pain causes altered arousal and specific behaviours that are rare at other times (pain indicators).We examined whether beef cows (mean age 6 years) are sensitive to pain indicators in addition to arousal following ear tagging and rubber ring castration (males only, n = 31) of their calf (n = 58).Behavioural pain indicators and activity were recorde
Increasing atmospheric CO2 concentration is generally expected to enhance plant growth, allocation and chemical composition of alkaloids in medicinal plants.The response to the elevated CO2 concentrations of various medicinal plants were studied with reference to growth and biochemical changes.Catharanthus roseus is an important medicinal plant whi
Membrane fouling is still the bottleneck affecting the technical and economic performance of the ultrafiltration (UF) process for the surface water treatment.It is very important to accurately understand fouling mechanisms to effectively prevent and control UF fouling.The rejection performance and fouling mechanisms of the UF membrane for raw and c