in this study the lc50 96h values of water-soluble fractions (wsf) of the caspian sea ? exploited crude oil were determined in beluga, huso huso fingerlings. the fingerlings averaged 2.42 ? 0.11 g in weight were exposed to wsf crude oil at concentrations 24.75, 27, 29.25, 31.5, 33.75, 36, 38.25 ppm. the treatments were performed in three replicates and all changes in the specimens were determin...

Although wood densification by compression improves wood mechanical strength, dimensional stability is often a problem due to compression recovery. Alternatively, oil-heat treatment (OHT) improves wood dimensional stability and enhances resistance to biological attack. This study examined combined wood densification and OHT. Large wood veneer 700 × 700 mm specimens prepared with aspen (Populus ...

This study aimed to evaluate the inhibitory effect of a series ammonium adipate solutions (AASs) by using linear expansion test, thermogravimetric analysis (TGA), and particle size distribution analysis, examine underlying mechanism. A AASs was prepared from adipic acid amines as small-molecule inhibitors oil shale rock swelling. They were then evaluated bentonite test. The best one, namely, AA...

The performance of Styrene-butadiene-styrene (SBS) modified asphalt is closely related to the content SBS modifier. In production process asphalt, a certain amount additive such as sulfur and rubber oil may be added reduce segregation promote swelling polymer, but effect these additives on determining in not yet clear. This paper presents calibration curves based rutting factor creep slope poin...

hydrogel nanocomposites based on alginate polysaccharide were prepared by graft copolymerization of acrylamide and itaconic acid in the presence of carbon nanotube, using methylene bisacrylamide and ammonium persulfate as crosslinker and initiator, respectively. the synthesized samples were characterized by infrared spectroscopy, thermogravimetric analysis and scanning electron microscopy. the ...

in order to determine outcome of pregnancy with lui in patients with unexplained recurrent miscarriage whose husbands have low hypo-osmotic swelling test scores, a prospective clinical intervention was performed at a university referral clinic of recurrent abortion. out of 56 patients whose husbands had abnormal hypo-osmotic swelling tests, 43 patients underwent lui, from which only 14 patients...

The hydro-swelling of smectite clay minerals in low-permeability reservoirs further decreases the reservoir permeability and results low oil recovery. Currently, traditional chemical anti-swelling agents are widely used, but most them only effective short term not environmentally friendly. Here, we report use Fe(III) reducing microorganisms (FeRM) as a novel green agent to enhance recovery from...

In this study the LC50 96h values of water-soluble fractions (WSF) of the Caspian Sea ? exploited crude oil were determined in beluga, Huso huso fingerlings. The fingerlings averaged 2.42 ? 0.11 g in weight were exposed to WSF crude oil at concentrations 24.75, 27, 29.25, 31.5, 33.75, 36, 38.25 ppm. The treatments were performed in three replicates and all changes in the specimens were determin...

PURPOSE To investigate the nature and cause of an acute, anomalous stromal edema after epithelial debridement in the rabbit cornea. METHODS Series I: Adult New Zealand White rabbit corneas were mounted in perfusion chambers. The endothelium was bathed with Ringer's fluid, and the outer surface was covered with silicone oil. The epithelium of one eye was débrided with a scalpel before mounting...