The parameters such as temperature, PH, TSS, TDS, ammonia, phenol, cyanide, sulfide, oil and grease, chloride, DO, COD and BOD were taken to assess the water quality of Sirsiya river, central southern Nepal. Water samples were collected from upstream to downstream from the point receiving industrial effluent to Sirsiya river. It receives wastewater burden of more than 250 industries along Bara/...

Twenty-nine additives were evaluated for their antiwear and extreme pressure properties when incorporated in various percentages in lithium soap-mineral oil greases. The percentages of the principal antiwear and extreme pressure inducing elements: sulfur, chlorine, phosphorus and lead were determined. The most promising ones were further evaluated in commercialgreases and in inorganic thickened...

Experimental Section Cross-polarised optical microscopy was performed using an Olympus BH-2 microscope coupled to a Leica DM-IRB digital camera. The gel samples were sealed two glass plates using vacuum grease to enable aging observations. Small angle X-ray scattering (SAXS) experiments were performed using a rotating anode with a copper target (λ = 1.54 Å). The distance between the sample and ...

The production of biodiesel through the transesterification method produces a large amount of wastewater that contains a high level of chemical oxygen demand (COD) and oil and grease (O&G). In this study, coagulation was adopted to treat the biodiesel wastewater. Two types of coagulation were examined using a standard jar test apparatus, i.e. polyaluminium chloride (PAC) and aluminium sulphate....

Two different greases formulated using MoS2 and a combination of ZDDP and functionalized PTFE (F-PTFE) were examined under spectrum loading conditions where loads, frequency, and duration of the steps were treated as variables. Combination of ZDDP and F-PTFE were synergistic resulting in a significant reduction in the wear and friction under spectrum loading condition. Decreasing the time step ...

A considerable need has been felt for a simple and reliable method of mounting serial sections for electron microscopy. Techniques so far published have necessitated special optical and micromanipulative equipment. An extremely simple and inexpensive micromanipulator capable of very fine movements in three dimensions was first described by Goldacre (1954). It consisted of several glass microsco...

In this paper, the heat transfer performances of aluminum metal foams, placed on horizontal plane surface, was evaluated in forced convection conditions. Three different types of contacts between the sample and the heated base plate have been investigated: simple contact, brazed contact and grease paste contact. First, in order to perform the study, an ad hoc experimental set-up was built. Seco...

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