Several petroleum pitches have been prepared by thermal treatment of various petroleum-derived residues such as clarified oil, aromatic extract and pyrolysis tars. These pitches were characterized physico-chemically (softening point, coking value, QI, & TI) and instrumentally (NMR) and compared. Attempts have been made to correlate physicochemical properties of petroleum residues and pitches wi...

The present study was carried out at Lovely Professional university, Phagwara, Punjab during 2019 to the performance of okra under irrigation levels and mulching methods drip irrigation. treatment comprised 3 (1.0 ETc, 0.8 ETc 0.6 ETc) 5 mulch (black plastic mulch, silver straw soil no mulch) laid in split plot design replicated thrice. growth yield attributes were significantly influenced by m...

2. Normative reference The standards cited at the appropriate places in this standard are as follows. For these reference standards, their latest version (including the Supplements) shall be applied. JIS K 0124 General rules for high performance liquid chromatography JIS K 2249 Crude petroleum and petroleum products Determination of density and petroleum measurement tables based on a reference ...

Purpose: Water saving practices are crucial for crop production in drought prone areas. This study was conducted Bugesera District, the Eastern Province of Rwanda. The objective to determine effect irrigation levels and mulching types on growth yields beans. 
 Methodology: A split plot experiment consisting three as main plots (no mulch, grass mulch plastic mulch) subplots, a Randomized Co...

A petroleum fluid can be di®ided into three types of species: asphaltenes, resins, and oils. Asphaltenes and resins are polar, while the rest of the so-called oils are either nonpolar or mildly polar. The interaction among these species strongly affect asphaltene precipitation from petroleum fluids. Different measuring methods for asphaltenes in a petroleum fluid gi®e similar results, but diffe...

Petroleum-based products are a primary energy source in the industry and daily life. During the exploration, processing, transport and storage of petroleum and petroleum products, water or soil pollution occurs regularly. Biodegradation of the hydrocarbon pollutants by indigenous microorganisms is one of the primary mechanisms of removal of petroleum compounds from the environment. However, the...

Plant-microbe interactions are considered to be important processes determining the efficiency of phytoremediation of petroleum pollution, however relatively little is known about how these interactions are influenced by petroleum pollution. In this experimental study using a microcosm approach, we examined how plant ecophysiological traits, soil nutrients and microbial activities were influenc...

A well-drained soil in N-fertilized dairy pasture was amended with particulate organic carbon (POC), either sawdust or coarse woody mulch, and sampled every 4 wk for a year to test the hypothesis that the addition of POC would increase denitrification activity by increasing the number of microsites where denitrification occurred. Overall mean denitrifying enzyme activity (DEA), on a gravimetric...

OBJECTIVE To test the tensile properties of knotted suture made of 4 different suture materials and exposed to petroleum gauze. STUDY DESIGN We tested the tensile strength of United States Pharmacopeia size 0-0 gauge polydioxanone, polyglyconate, glycolide/lactide copolymer, and silk when exposed to petroleum packing or saline. Suture materials were randomized, and knots were tied and then ev...