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126 articles for “Powder”
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Research ArticleOpen accessIn the abstractMechanism of Microencapsulation with Urea-Formaldehyde PolymerRochmadi, Agus Prasetya, Wahyu HasokowatiProblem statement: Microcapsule is one of important fine chemical products in the current chemical industries. Better understanding of microencapsulation process is useful to properly design of microcapsule with specific characteristics. The aim of this research is to study the mechanism of Urea-Formaldehyde (UF) microcapsules formation. Approach: Microcapsule was prepared in two steps. The first step was the preparation of oil … …American Journal of Applied Sciences, Vol. 7, Issue 6 · 30 Jun 2010 · 8,718 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Development of Natural Pigments in Esaan Folk Wisdom for Usage of PaintingSuchat Sukna, Sastra Laoakka, Thaksina KrairachProblem statement: The objectives of this research were: (1) History and background of pigments from natural material in Esaan painting, (2) current condition and problems of pigments from natural material in painting work and (3) develop pigments from natural material for painting work usage. Approach: The instrument consisted of the observation form, interview form, focus group discussion and workshop record … …Journal of Social Sciences, Vol. 5, Issue 4 · 31 Dec 2009 · 7,662 accessesView PDFCite
Research ArticleOpen accessIn the abstractStatistical Models for Hardened Properties of Self-Compacting ConcreteArabi N.S. Al Qadi, Kamal Nasharuddin Bin Mustapha, Hashem Al-Mattarneh, Qahir N.S. AL-KadiProblem statement: For predicting workability and hardened properties of Self-Compacting Concrete (SCC) no well known explicit formulation. Approach: Statistical models were carried out to model the influence of key mixture parameter (cement, water to powder ratio, fly ash and super plasticizer) on hardened properties affecting the performance of SCC. Such responses included compressive strength at 3, 7 and 28 days … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 4 · 31 Dec 2009 · 8,148 accessesView PDFCite
Research ArticleOpen accessIn the abstractRocks with Asbestos: Risk Evaluation by Means of an Abrasion TestBellopede Rossana, Clerici Carlo, Marini Paola, Zanetti GiovannaNaturally occurring asbestos and asbestiform minerals can be found in metamorphic rocks and in the soil of the alluvial plains. Problem statement: The definition of the "free-asbestos rock" and the limit to consider a rock or a soil safe is still a controversial issue. American and European laws did not present any method to define the hazard of the green … …American Journal of Environmental Sciences, Vol. 5, Issue 4 · 31 Oct 2009 · 7,672 accessesView PDFCite
Research ArticleOpen accessIn the abstractProximate Analysis of Dragon Fruit (Hylecereus polyhizus)Ruzainah Ali Jaafar, Ahmad Ridhwan Bin Abdul Rahman, Nor Zaini Che Mahmod, R. VasudevanProblem statement: Dragon fruit (Hylecereus polyhizus) is well known for the rich nutrient contents and it is commercially available worldwide for improving many health problems. Several studies show the proximity value of red pitaya fruits but the nutrient composition of the stem has not been extensively studied. Approach: This study was carried out to measure the proximate analysis of moisture … …American Journal of Applied Sciences, Vol. 6, Issue 7 · 31 Jul 2009 · 14,059 accessesView PDFCite
Research ArticleOpen accessIn the abstractPetrography and Sulphur Isotope Studies of Pyrites in the Muteh Gold DepositM. J. Abdollahi, M. H. Karimpour, A. KheradmandProblem statement: The Muteh mining district is located in 70 km northeast of Golpaygan city within the Sanandaj-Sirjan metamorphic belt. There are 2 gold mines, 7 gold occurrences and numerous mineral indices in the Muteh gold district. There are few researches on Muteh gold district, but a detailed model is not clear yet. The aim of this study is to … …American Journal of Applied Sciences, Vol. 6, Issue 6 · 30 Jun 2009 · 7,133 accessesView PDFCite
Research ArticleOpen accessIn the abstractDevelopment of Microbial Inoculants and the Impact of Soil Application on Rice Seedlings GrowthHayyan Ismaeil Al-Taweil, Mohammad Bin Osman, Aidil Abdul Hamid, Wan Mohtar Wan YussofProblem statement: The present study was undertaken to assess the Empty Fruit Bunches (EFB) as carrier of Biofertilizer and microbial inoculants interaction. A study in Malaysia had shown a strain of Trichoderma viride and Bacillus megaterium were isolated from the soil. Questions were raised whether the tow inoculants compatible to be mixed in same carrier? It is important to develop … …American Journal of Agricultural and Biological Sciences, Vol. 4, Issue 1 · 31 Mar 2009 · 8,722 accessesView PDFCite
Research ArticleOpen accessIn the abstractSynthesis of Mesoporous Titania with Surfactant and its CharacterizationT. Benkacem, N. AgoudjilA mesoporous titania was obtained by gelation from Ti-alkoxide in acidic solutions with addition of surfactant cetyltrimetylammonium bromide (CH3(CH2)15N(CH3)3Br) using a sol-gel process. The effects of surfactant concentration on synthesis of mesoporous titania were studied. The structural characterisation was studied by differential thermal analysis, infrared spectroscopy, X-ray diffraction. Studies by X-ray diffraction showed that crystallisation of TiO2 powder occurs at … …American Journal of Applied Sciences, Vol. 5, Issue 11 · 30 Nov 2008 · 7,418 accessesView PDFCite
Research ArticleOpen accessIn the abstractOil Palm Biomass As Potential Substitution Raw Materials For Commercial Biomass Briquettes ProductionA.B. Nasrin, A.N. Ma, Y.M. Choo et al.Palm oil industry generates vast amount of palm biomass. Converting palm biomass into a uniform and solid fuel through briquetting process appears to be an attractive solution in upgrading its properties and add value. In this study, raw materials including empty fruit bunch (EFB), in powder and fibre forms, palm kernel expeller (PKE) and sawdust were densified into briquettes at … …American Journal of Applied Sciences, Vol. 5, Issue 3 · 31 Mar 2008 · 9,476 accessesView PDFCite
Research ArticleOpen accessIn the abstractPerformance Study On An Intermediate Temperature Solid Oxide Fuel Cell (IT-SOFT) Fabricated By Dry Pressing MethodA. Rifau, Z. Zainal, D. Mutharasu et al.An intermediate temperature solid oxide fuel cell (IT-SOFC) has been developed by using the dry pressing method. Widely studied materials were used for anode and cathode and SDC based electrolyte was used in this study. The cells were fabricated by dry-pressed at different pressures using a die without any binding material, a known amount of three electrode materials in powder … …American Journal of Applied Sciences, Vol. 3, Issue 9 · 30 Sep 2006 · 6,970 accessesView PDFCite