Adsorptive capacities of expanded perlite, prepared on the basis natural mineral Georgia – in process aqueous solution purification from Zn (II) ions, have been first studied work. The dependencies adsorption degree and volume capacity adsorbent dosage, contact time, adsorbate concentration pH medium studied. Experiments conducted under dynamic conditions. Optimum conditions Zn(II) ion establis...

Abstract In the last years, research applications in construction sector have taken a different turn due to rapid urbanization and necessity protect environment create balance between natural built environments. Taking into account fact that thermal efficiency of buildings has an important influence over environmental performances sector, civil engineering specialists tried develop use new solu...

When controlling the length of yield site, influence ferrite grain size, amount perlite, temperature, speed and deformation scheme on localization low?carbon steel plastic deformation, which reduces ability metal to hardening, is considered.

to study the effect of different concentrations of potassium in thenutrient solution and water stress on the quality and quantity yield of lilium la cv.termoli, a pot experiment was conducted based on completely randomized design in sand and perlite medium (50:50) in three levels of potassium (kfree, 6 mm k and and 12 mm k in hoagland solution) with three replications. in the present study, the...

araucaria excelsa l. of araucariaceae family is a beautiful conifer which has a high economic importance in the flower industry. a factorial experiment based on randomized completely block design with two factors: 1. irrigation intervals in 2, 4 and 6 days (i1, i2 and i3) and 2. the growth bed in pots 3 l included m1 (100 % v/v cocopeat), m2 (100%  municipal waste compost), m3 (100 % vermicompo...

perlite or pearl stone is a natural glass which has formed by rapid cooling of viscous lava or magma. perlite is mainly composed of silica, aluminum, potassium and sodium. in this experiment, perlite was used as a low-cost source of si and al to synthesis of sodalite zeolite using the alkaline hydrothermal treatment. a statistical taguchi design of experiments was employed to evaluate the effec...

The preparation, characterization, and in vitro release of 5-aminosalicylic acid (5-ASA) from methacrylic acid (MAA)/perlite composites (APC) prepared via a sol-gel route are reported. The free-radical graft polymerization of methacrylic acid (MAA) onto perlite particles was studied experimentally. The grafting procedure consisted of surface activation with 3-(trimethoxysilyl) propyl methacryla...

Japanese pine sawyer beetle, pine shoot beetle, and Formosan subterranean termite were selected to investigate the inhibitory abilities of solid wood and wood-based composites (MDF and WPCs) made with Eucalyptus urograndis and Melaleuca leucadendra. The chemical components in the extractives of the two types of wood were also analyzed by GC-MS. The results indicated that the inhibitory ability ...

Critical operating temperature can be determined for the machine components that form key functional part of device. This article describes a change failure mechanism in material an engine, where structure consists fine pearlite layers with lamellar graphite equivalent to grey cast iron. The mechanical properties this influence not only formed by perlite, but also acting as stress concentrator....