The friction and wear properties of gray cast iron (FC250) specimens sliding against AISI 52100 steel ball were evaluated under the lubrication of PAO (poly-alpha-olefin), PAO+ZnDTP (1.5 mass% ZnDTP) and PAO+PN (amine salt of alkoxyl phosphate, 1.5 mass% PN) oils.The tests were conducted using an Optimol SRV reciprocating friction and wear tester a
Several studies have shown that changes in land cover within a given watershed significantly affect the hydrological cycle and its variables.In the Xingu basin, many areas had their vegetation replaced by agricultural crops and pastures, while deforestation has been particularly prevalent in the region known as the Arch of Deforestation.Using remot
The advent of RNA-sequencing (RNA-Seq) technologies has markedly improved our knowledge and expanded the compendium of small non-coding RNAs, most Piping Rock of which derive from the processing of longer RNA precursors.In this review article, we will present a nonexhaustive list of referenced small non-coding RNAs (ncRNAs) derived from eukaryotic
Recent repeated flashovers and power outage Floormat incidents in an (400/132) kV substation, located in the Ad Diwaniyah Province, have called for extensive investigations to evaluate the effect of subsequent deposition of sandstorm and free carbon particles (soot) on the performance of HV insulators and probable flashover occurrences.In the Ad Di
A survey on the prevalence and intensity of infection with gastrointestinal helminths of Dorper sheep in relation to age and weather factors was carried out on a ranch in Kajiado district, a semi-arid area of Kenya for a period of 13 months (May 1999 to May 2000).Faecal samples from lambs (3 months to 1 year), yearlings (1-2 years) and adult breedi