This paper addresses procurement planning in oil refining, which has until now only had limited attention in the literature. We introduce a mixed integer nonlinear programming (MINLP) model and develop a novel two-stage solution approach, which aims at computational efficiency while addressing the problems due to discrepancies between a non-linear and a linearized formulation. The proposed mode...

The effects of different concentrations of Zataria multiflora  essential oils at concentrations of 0, 0.005, 0.015, 0.045, 0.135, 0.405 and 0.810% on the growth of Staphylococcus aureus were studied in a food model system, light salted fillets of silver carp (Hypophthalmichthys molitrix) at storage temperature of 10ºC for 21 days. The results showed that there was no significant difference in b...

The effects of different concentrations of Zataria multiflora  essential oils at concentrations of 0, 0.005, 0.015, 0.045, 0.135, 0.405 and 0.810% on the growth of Staphylococcus aureus were studied in a food model system, light salted fillets of silver carp (Hypophthalmichthys molitrix) at storage temperature of 10ºC for 21 days. The results showed that there was no significant difference in b...

Vegetable oils are the most important source of fat in the human diet. Derived from an array of vegetable sources, oils are extracted and processed for a variety of food uses. In the demanding and competitive edible fats and oils marketplace, the product evaluation criteria are important for both customers and suppliers. Soybean oil is very popular with rich value of Omega 3 and Omega 6. Those ...

introduction oil storage tanks are one of the most important industrial facilities that are exposed to risks of toxic substances release, fire and explosion. fire is a common risk and explosion is the most important risk at the oil storage tanks and petroleum products. in research with applications in chemical risk assessment that was published in 2007, causes risk in the hands of the industrie...

Purpose: To investigate the chemical composition and toxicity of the essential oil of Glycosmis parviflora (Sims) Little aerial parts against root-knot nematode and two grain storage insects (maize weevil and red flour beetle). Methods: Steam distillation of G. parviflora was carried out using Clavenger apparatus in order to extract its volatile oil. Gas chromatography/mass spectrometric (GC/MS...

In recent years, the demand for plant-derived oils as renewable alternatives to fossil oil has increased due to the rising cost of petroleum and the increased concern about the environment. However, the supply of vegetable oils today relies upon only a few crops with low potential for further increases in oil yields. Redirection of carbon flux from starch to oil in the cereal seed can provide f...

This study investigated the potential effects of egg quality indices at 95% confidence level in order to minimize quality loss during different storage conditions. The chicken and quail eggs’ quality indices including weight, albumen index, yolk index, Haugh index in fresh eggs as well as after storing in moist sawdust, oil, and refrigerator were measured for six weeks. The results revealed tha...

in this study, the effect of different concentrations of zataria multiflora boiss. essential oil (0.00, 0.005,0.015,0.03%), temperatures (8&25° c) and storage time (up to 21 days) was evaluated in a food model system (humburger). the correlation coefficient of different concentrations of zataria multiflora boiss.essential oil with logarithm of the numbers of e.coli 0157:h7 was (-0.528 ). it was...