The role of aliphatic alcohols on the temperatures of the helix-coil (Trr) and of the melting transformation (Tr) for collagen in water solutions was investigated. Alcohols used were CH,OH, C2H50H, and C3H70H and the role of chloroethanol was also investigated. The results indicate that on increasing alcohol concentration both Tr and Trr are initially depressed (i.e. the random coil form is fav...

The objective of this study was to quantify the influence of zinc oxide nanoparticles (nanoZnO) on the water repellency and dimensional stability of beech wood. Beech wood blocks were treated with a nano-ZnO solution at four treatment levels (0, 10,000, 20,000, and 40,000 ppm) using a modified dip method. Also, a thermal treatment was performed at 60 and 120°C. After conditioning the samples, w...

expansive soils show swelling and shrinkage behavior when subjected to cyclic wetting and drying. the variation in water content influence the volume change in this kind of soil. these volume changes can cause ground movement which may result in damage to the buildings and structures. to study the behavior, a number of successive wetting-drying cycles were conducted on a statically compacted ex...

To promote the performance of fast-growing poplar wood for furniture applications, this study proposes and investigates feasibility modifying with a urea-formaldehyde resin impregnating agent by adding nano-SiO2 as way to improve its physical mechanical properties. By observing solubility addition in resin, determine optimal ratio solid content solution. After specimens were treated nano-SiO2/U...

throughout the present research, squash (cucurbita pepo) slices (0.4 cm thickness and 4 cm diameter) were blanched in a steam chamber for 4 min. following cooling to room temperature, the squash slices were dehydrated by use of a hotair dryer, under air temperature of 60°c up to moisture content of 0.1065 kg h2o per kg d.m. squash slices of specified weights were rehydrated by immersion in dist...

2. College of Pharmacy, Western University of Health Sciences, 309, East 2 Street, Pomona, CA 91766 Ph: 909-469-5550 Fax: 909-469-5600 Email: sprabhu(at)westernu.edu Abstract The purpose of this research was to prepare and characterize a novel lyophilized chitosan-based hydrogel complex (termed CS-M) for controlled drug delivery applications using a highly water soluble model drug, niacinamide....

The time necessary for a drop to be absorbed by swellable fibre strongly depends on the geometry and volume; due local saturation below drop, there is critical volume above which this increases.

For greater durability, materials must withstand contact with water, making it difficult for biodegrading agents to attack. The present study produced and evaluated the heat transfer two pressing times physical properties of OSB panels, pinewood strands Al2O3 nanoparticles addition. were synthesized through sol-gel-protein method added resin in proportion 0.5%. During process, distribution cent...