Sample preparation. 6 g EVA (containing 18 wt.% of VA, Sigma-Aldrich, Canada) was first dissolved in 50 mL toluene at 80 oC under magnetic stirring to form homogeneous solution, which was then cooled to 55 oC and subsequently added with 0.123 g DCP (dicumyl peroxide, Sigma-Aldrich, Canada) and continuously stirred for 10 min. The above solution was first cast into a petri dish to allow evaporat...

BACKGROUND AND OBJECTIVES Mobilization of the colon and dissection of the mesentery are difficult laparoscopic techniques. Traditional methods have been used for this dissection, but often with great difficulty. The ultrasonically activated shears, when introduced in 1993, had the possibility to make this dissection less technically difficult. This is a retrospective review of the use of these ...

Metal matrix nanocomposites (MMNCs) are becoming the materials of choice in a variety engineering and medical applications owing to their exhibiting superior combination targeted properties. Amongst different MMNCs, aluminum-based composites special importance. In many applications, relatively inferior wear property limits use this valued metal practice. However, reinforcing aluminum its alloys...

BACKGROUND Dithiothreitol (DTT), which is used for sputum homogenization, may split S-S bonds of the bronchial mucins as well as other proteins and, thus, may have a detrimental effect on inflammatory mediators that are present in sputum. OBJECTIVE To evaluate the effects of physical sputum homogenization, using ultrasonic and chemical (ie, DTT) means, on the concentrations of eosinophil cati...

Monodisperse spherical silica particles were synthesized by mixing 40 ml of aqueous ammonia (NH4OH, 28 wt%) with a solution containing 1000 ml of absolute ethanol (EtOH) and 80 ml of deionized water (H2O). After stirring for 30 min, 60 ml of TEOS (98%, Aldrich) was added to the solution and stirred for 6 h at room temperature. The as-synthesized silica particle suspension was centrifuged and wa...

Graphitic carbon nitride (g-C3N4) was synthesized from melamine and exfoliated by thermal treatment. Exfoliated g-C3N4 particles were immobilized electrophoretic deposition an ultrasonically treated ethanolic suspension aged up to 12 weeks. During the aging of suspension, separation bigger than 10 ?m observed. The separated stable part contained with a relatively uniform size distribution, enab...

The chemical composition, hydrolysis products, and kinetics during liquid hot water pretreatment of sweet sorghum bagasse (SSB) and eucalyptus wood chips (EWC) were investigated. Under optimal conditions, a total xylose recovery of 79.6% and 55.6% for SSB and of 74.9% and 84.4% for EWC was achieved after pretreatments in a step-change flow rate reactor (184 °C, 20 ml/min, 8 min, and 10 ml/min, ...

The present study is concerned with the improvement of Bacillus amyloliquefaciens strain UNG-16 for alpha amylase production. The bacterial culture was exposed to UV irradiation at 1.6×10 J/m/S for 15-60 min. However, UV induced viables did not give improved alpha amylase production; therefore chemical mutation using ethyl methane sulphonate (EMS 50-300 μl/ml) was undertaken for 10-60 min. The ...

A medium-entropy alloy (MEA) of CoNiCu with a face-centered cubic structure was successfully obtained by electrochemical deposition. To achieve nearly equiatomic composition, water-in-oil emulsion used as the solution for electrodeposition. Since water droplets in tended to be destroyed within 10 min under electrolysis, periodically irradiated ultrasonically maintain its emulsified state order ...