Steel fiber reinforced concrete (SFRC) is used for slabs on grade such as pavements, industrial floors, airport runways, since it exhibits excellent isotropic mechanical properties. When mixing the fibers with the fresh concrete, care is taken to obtain a uniform distribution and a random orientation of the fibers. The strength of this concrete primarily depends on the fiber content, hence it i...

this study was aimed to investigate the effect of altitude on fiber characteristics, chemical composition and kraft yield pulp of brutian pine. wood samples were collected from different altitudes as 450, 750 and 960m of arabdagh plantation, located in kalaleh region in the northeast of golestan province. three healthy sample trees of brutian pine were cut from each altitude. maceration of earl...

Recent works in the E-Learning field tend to focus on the learner, leaving the representation and treatment of contents in the background. One of the principal actors that contribute on this focus shift is the adoption of adaptive techniques that profile learners and adjust the contents according to the inferred profiles. In contrast with most adaptive approaches, this work introduces a short-t...

The article presents experimental data on the content of dietary fiber in confectionery industry products: raw materials for production products, chocolate, cookies, marshmallow, marmalade, candy, halva, iris. We investigated 30 samples materials, 10 kinds 9 different 20 candies and marshmallows marmalade. Of particular interest were non-traditional this industry, such as boiled carrots, zucchi...

Natural cellulose fibers with cellulose content, strength, and elongation higher than that of milkweed floss and between that of cotton and linen have been obtained from the stems of common milkweed plants. Although milkweed floss is a unique natural cellulose fiber with low density, the short length and low elongation make milkweed floss unsuitable as a textile fiber. The possibility of using ...

Electron microscopy of disrupted Escherichia coli cells under certain conditions revealed loops of a fiber 120 A in diameter which were attached to the cell envelope and showed a 130 A repeating beaded substructure. These fibers were detected only when the cells were lysed in 0.15 M NaCl solutions directly on the electron microscope supporting films and if the dehydration steps began within 2 m...