نتایج جستجو برای: pumice powder
تعداد نتایج: 47653 فیلتر نتایج به سال:
The 1285 m thick MIS core offers an invaluable opportunity to obtain a detailed record of volcanism in McMurdo Sound. Volcanic stratigraphy and preliminary petrologic data on volcanic rocks in the AND-1B core are reported here. Remarkable volcanic deposits include: a) a phonolitic pumice layer found at ≈85 mbsf which is not correlated to any known vent onshore; b) a black well sorted volcanic s...
Soilless culture in greenhouse is being developed in Iran, as in many countries of the world. This study was conducted to evaluate the possibility of applying sawdust as well as the effect of adding bentonite and pumice on vegetative growth of bell pepper cv. Inspratian. The experiment was conducted as a completely randomized blocks design with 8 treatments and 4 replications, in greenhouse of ...
Backgrounds and Objectives: Treatment of colored wastewater is one of the important challenges of environmental engineers. Adsorption process is a key option for removal of organic matter from wastewater. The aim of present work was to investigate pumice stone as an adsorbent for removal of Acid Black 1 from aqueous solution.Materials and Methods: Removal of Acid Black 1 by pumice stone was inv...
application of superabsorbent material is one of the new methods for moisture storage in the soil. this research was performed in the khajeh research station on the basis of randomized complete block design with three replications in the plots with dimension of 4×5 meter for investigate the effect of different amounts of pumice on water retention capacity in the soil, growth and of spring saffl...
Bu çalışmada, farklı oranlarda bazaltik ve asidik pomza kullanılarak üretilen betonların fiziksel mekanik özelliklerini incelenmiştir. Pomza agregaları normal agregadan %50 %100 oranında ikame edilmiştir. Ayrıca daha çevreci bir beton üretmek amacıyla atık olan cam tozu çimentodan %10 edilerek 5 karışım üretilmiştir. Üretilen numunelere birim hacim ağırlığı, su emme, porozite, ultrasonik ses ge...
Background and Aims: The purpose of this study was research on a new herbal compound (Seidlitzia Rosmarinus) made by Traditional Medicine Research Group, University of shahed to find a safer alternative to HCL-Pumice compound technique. Materials and Methods: In this randomized clinical trial seventy two anterior teeth from 9 patients were divided in to three groups according to fluorosis s...
Fe is a heavy metal that often found in water. If the level exceeds maximum limit and continuously consumed, it will cause various kinds of diseases so method needed can reduce Fe2+. In this study, Fe2+ ion adsorption was carried out using pumice which aims to determine characteristics include surface area, density porosity, ability, contact time required absorb ions. The used batch method, wit...
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