Mineral oil has traditionally been used as a cooling fluid in power transformers, but its low biodegradability and fire point have motivated the search of alternatives. In this work, six different dielectric fluids studied, including four vegetable liquids, from sunflower, rapeseed, soybean, palm, one synthetic ester mineral for comparison. These oils were subjected to an accelerated thermal ag...

Usage of cellulosic nanofibers, starch-nanocellulose, and polyacrylamide-nanocellulose hybrid systems were investigated for the replacement imported long bleached kraft fibers in production durable papers. In this study, softwood pulp was added to cotton at four levels. Nanofibrillated cellulose (NFC) prepared from chemimechanical a 5% level with optional 1% cationic starch or 0.1% polyacrylami...

The aim of this study was to investigate the flexural behavior of engineered cementitious composites (ECCs) reinforced by cellulose pulp (CP) and cellulose microfibers (CMF). The reinforcements were obtained from chemical-mechanical treatments of Kraft paper and used in ECC mix design. Results showed that cement reinforced by CP exhibited a strain-hardening behavior in the three-point bending t...

We try to clarify the relations between quiver varieties of type A and Kraft-Procesi proof of normality of nilpotent conjugacy classes closures.

UNLABELLED BACKGROUND Lignin is one of the three major components in plant cell walls, and it can be isolated (dissolved) from the cell wall in pretreatment or chemical pulping. However, there is a lack of high-value applications for lignin, and the commonest proposal for lignin is power and steam generation through combustion. Organosolv ethanol process is one of the effective pretreatment ...

Wood polymer composites (WPC) are sensitive to moisture because of the hydrophilic nature wood fibers. The main objective this study was improve dimensional stability WPCs by coating. Polypropylene and polylactic acid were reinforced three pulp fibers (kraft, thermomechanical (TMP), chemothermomechanical (CTMP)) at fiber contents (50, 60, 70% w/w). resulting coated using two commercial coatings...

We introduce the notion of super-state automaton constructed from another automaton. This construction is used to solve an open question about enumerative sequences in rational trees. We prove that any IN-rational sequence s = (sn) n0 of nonnegative integers satisfying the Kraft inequality P n0 snk ?n 1 is the enumerative sequence of leaves by height of a k-ary rational tree. This result had be...

An ultrasound-assisted extraction (UAE) method using ethanol was applied for extracting arabinogalactan (AG) and dihydroquercetin (DHQ) simultaneously from larch wood, as a pretreatment for pulping and papermaking. The extraction parameters were optimized by a Box-Behnken experimental design with the yields of AG and DHQ as the response values. Under optimum conditions (three extractions, each ...

Barrier paper, which is made of bleached absorbent kraft pulp, is a significant layer of decorative laminates, since it controls the see-through of brown color of saturating kraft paper and its opacifying effect usually is achieved by a heavy loading of TiO2. The TiO2, due to its very small particle size, passes between the cellulosic fibers and drains into the white water. To overcome this pro...

More recently, the concept of integrated forest biorefinery (IFBR) has received much attention as a promising solution for the struggling forest industry in North America and Europe to overcome its difficult financial period and competes globally. This new business paradigm offers a broad range of potentially attractive products, from bioenergy to value-added green organic chemicals in addition...