In this work the likelihood of asphaltene deposition problems during dynamic displacement of oil by natural gas in unconsolidated porous media is experimentally inspected. The two different rock materials, limestone and sandstone, are used as a representative of porous media. Dynamic flow experiments indicate that the increase of natural gas injection inc...

background & aim: the use of herbal extracts as safe and effective factors for eradicating of stores pests has attracted much attention. in this paper, the bio-effects of fumigation and repellent effects of essential oil of eucalyptus globolus were investigated on red flour beetle. experimental: in this study, the toxicity, fumigation and repellency contacts were assayed by topical applicat...

Fumigation of soil using chloropicrin has been proven to significantly affect nutrient cycling, but the mechanism by which potassium conversion and plant uptake is promoted remains unclear. In this study, we conducted a fumigation experiment investigate effects on post-fumigation (days 7–70), its mechanisms, tomatos were planted in fumigated non-fumigated soils enable further comparisons. Resul...

A use-or-lose provision requires firms to employ a certain minimum fraction of their productive capacity. Variants have been used by regulators in the airline, natural gas transmission, and electric power industries, among others. The primary objective of these provisions is to limit capacity hoarding. We examine the welfare implications of imposing a use-or-lose provision on firms that are abl...

The California ground squirrel (Spermophilus beecheyi) is widely distributed throughout California. It causes serious damage to agricultural crops. Tests were conducted to evaluate the fumigant aluminum phosphide (Phostoxin®) and to compare it to the commonly used gas cartridge. Treatments consisted of applying either a single-dose (two 3-gm tablets) or double-dose (four 3-gm tablets) of alumin...

In this paper, an advanced analysis of a novel hybrid compression-absorption refrigeration system (HCARS) for natural gas dew point control unit in a gas refinery is presented. This unit separates the heavy hydrocarbon molecules in the natural gas, which is traditionally carried out by natural gas cooling in a compression refrigeration cycle (CRS). The power input required for the refrigeration...

High value crop producers in California rely heavily on soil fumigation to control a wide array of soil borne pests including nematodes, pathogens and weeds. Fumigants with broad biocidal activity can affect soil microbial communities that contribute to nutrient cycling and plant nutrient uptake which can impact soil health. It is often thought that soil microbial communities make a relatively ...

supersonic separators have found extensive applications in dehumidification of natural gases since 2003. unlike previous studies, which have investigated the inlet conditions and nozzle geometry of supersonic separators for pure fluids, the present study employed a combination of momentum, heat, and mass transfer equations along with virial equation of state (eos) to inspect the effect of inlet...