Results: The findings revealed that petroleum ether extracts possess excellent anti-lice activity .In 15 % concentration seed oil is able to kill 100% lice and 10 and 15 % concentration of seed oil makes nits unable to survive, results were well comparable with standard i.e benzoyl benzoate (25% w/v) as its 10% and 20% concentrations are able to kill 100% lice and deactivated nits. These result...

Petroleum-oil sprays and fogs are used increasingly to control insect pests of economic plants. These oils are useful in controlling the aphid vectors of potato virus, but it is first necessary to learn which oils are tolerated by potato leaves. Hence, undiluted oils and cresoap emulsions of petroleum oils were tested on potato leaves to determine: (1) The rates of oil penetration into leaves; ...

For several decades, petroleum has been a commodity of vital impor-tance to the global economy, in which a number of interesting marketphenomena has occurred. This monograph represents my efforts todescribe several of these phenomenon, along with a few other elementsof the oil market. My focus is on elements related to the extractionof petroleum, and the interactions between...

The studies focused on the effect of the addition of low concentrations of glucose - a substrate that is readily subject to microbiological degradation, on the rate of biodegradation of petroleum products. Glucose in concentration 1% was introduced into mineral medium containing 3% crude oil, with or without bacterial inoculum. The rate of degradation of crude oil in the individual cultures was...

Absorption and fluorescence properties of 4 hydraulic oils (3 biological and 1 petroleum-based) were investigated. In-situ LIF (laser-induced fluorescence) analysis of the oils on a brown sandy loam soil was performed. With calibration, quantitative detection was achieved. Estimated limits of detection were below ca. 500 mg/kg for the petroleum-based oil and ca. 2000 mg/kg for one biological oi...

Fluorosurfactants are effective in a variety of Enhanced Oil Recovery (EOR) techniques including (i) improving subterranean wetting, (ii) increasing foam stability, and (iii) modifying the surface properties of the reservoir formation. While fluorosurfactants have been used in gas and oil exploration for four decades, the increased demand for petroleum and the greater understanding of the benef...

Used motor oils (UMO) are a remarkable commodity arousing interest of each new generation of researchers. UMO also include used gear oils, but their degree of use is much lower. The primary role of motor oil is to reduce friction and prevent corrosion. It also serves to dissipate heat and hold in suspension by-products of engine wear, combustion and degradation products. Motor oil originates fr...

Crude oil blending is an important unit operation in petroleum refining industry. A good model for the blending system is beneficial for supervision operation, prediction of the export petroleum quality and realizing model-based optimal control. Since the blending cannot follow the ideal mixing rule in practice, we propose a static neural network to approximate the blending properties. By the d...

Many seabirds die each year after exposure to petroleum hydrocarbons (Piatt and Lensink 1990; Khan and Ryan 1991). Crude oil, following ingestion, induces hemolytic anemia which occurs 4 to 5 d later (Leighton et al. 1983). A recent study reported the presence of hemosiderin in the liver of common murres (Uria aalge) at intervals up to 42 d after oil-contamination (Khan and Ryan 1991). Hemoside...

Crude oil blending is an important unit operation in petroleum refining industry. A good model for the blending system is beneficial for supervision operation, prediction of the export petroleum quality and realizing model-based optimal control. Since the blending cannot follow the ideal mixing rule in practice, we propose a static neural network to approximate the blending properties. By the d...