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Research ArticleOpen accessIn the abstractEffect of Mixing on the Biological Degradation of Toluene under Aerobic ConditionsAbdel E. Ghaly, D.G. Rushton, K. MartinellThe effectiveness of in-vessel bioremediation in reducing the concentration of toluene in contaminated soil under continuous and intermittent mixing conditions using invessel composting system. The results showed that there was a startup period (60 h) during which the average temperature rose from 21 to 32 and 40°C (and then remained constant) for the bioreactors with continuous and intermittent mixing, respectively. … …American Journal of Environmental Sciences, Vol. 3, Issue 4 · 31 Dec 2007 · 6,503 accessesView PDFCite
Research ArticleOpen accessIn the abstractBiosorption of Cr(III) by Microalgae and Macroalgae: Equilibrium of the ProcessIzabela Michalak, Agnieszka Zielinska, Katarzyna Chojnacka, Jan MatulaEquilibrium experiments of chromium(III) biosorption by microalga (Spirulina sp.) and macroalga (Pithophora varia) were investigated in this paper. Influence of the following process parameters was studied: pH, biomass concentration and temperature. The equilibrium of the process was described with Langmuir equation. The model parameters were determined at various process conditions. The best operation conditions for the process were selected: pH … …American Journal of Agricultural and Biological Sciences, Vol. 2, Issue 4 · 31 Dec 2007 · 8,208 accessesView PDFCite
Research ArticleOpen accessIn the abstractNew Low-Temperature Technology of Producing Calcium Feed Phosphate with MicroelementsJózef HoffmannThe possibility of producing feed calcium phosphates in a way ensuring a low physical water content in the product was investigated in laboratory conditions. For this purpose the process use of a phosphoric acid solution with a higher (than in conventional methods) P2O5 content (53-63% by wt. P2O5) with CaO (molar fraction of 0.5-0.8) and CaCO3 in the phosphoric acid … …American Journal of Agricultural and Biological Sciences, Vol. 2, Issue 4 · 31 Dec 2007 · 7,743 accessesView PDFCite
Research ArticleOpen accessIn the abstractThree Algorithms for Flexible Flow-shop SchedulingTzung-Pei Hong, Pei-Ying Huang, Gwoboa Horng, Chan-Lon WangScheduling is an important process widely used in manufacturing, production, management, computer science, and so on. Appropriate scheduling can reduce material handling costs and time. Finding good schedules for given sets of jobs can thus help factory supervisors effectively control job flows and provide solutions for job sequencing. In simple flow shop problems, each machine operation center includes just one … …American Journal of Applied Sciences, Vol. 4, Issue 11 · 30 Nov 2007 · 6,972 accessesView PDFCite
Research ArticleOpen accessIn the abstractOptimization Based Heuristic Approaches for Solving an Integrated One-dimensional Cutting Stock-Transportation ProblemSirirat Wongprakornkul, Peerayuth CharnsethikulIn this work, the integration of the one-dimensional cutting stock problem with multiple cutting facilities and the transportation problem was formulated mathematically as a large-scale discrete optimization problem. Benders partitioning approach and the column-generation technique with the direct method and the proposed heuristic method for solving corresponding integer programming (IP) were developed into three approaches and were used to solve … …Journal of Mathematics and Statistics, Vol. 3, Issue 3 · 30 Sep 2007 · 6,744 accessesView PDFCite
Research ArticleOpen accessIn the abstractInhibition of Cholesterol Esterification Influences Cytokine Exspression in Lypopolisaccharide-activated P388D1 MacrophagesRosa Rita Bonatesta, Francesca Sanna, Sabrina Uda et al.Several in vivo and in vitro studies have demonstrated the involvement of infectious agents in the development of atherosclerosis. However, the mechanisms by which micro-organisms induce and/or aggravate atherosclerosis, are so far unclear. Accumulation of cholesterol esters and lipid laden cell formation are hallmark of the atherogenesis, however, the possible relationship between cholesterol esterification and the signal-transducing component of LPS … …American Journal of Infectious Diseases, Vol. 3, Issue 3 · 30 Sep 2007 · 7,484 accessesView PDFCite
Research ArticleOpen accessIn the abstractCholesterol Metabolism in Brain and Skin Fibroblasts from Sarda Breed Sheep With Scrapie-resistant and Scrapie-susceptible GenotypesAlessandra Pani, Claudia Abete, Claudia Norfo et al.Scrapie is a fatal spongiform encephalopathy of sheep, a transmissible form of prion disease caused by neuronal accumulation of the aberrantly conformed prion protein (PrPsc). Currently, no ante-mortem diagnostic tests are available to detect this untreatable disease in the pre-clinical stage, thus making difficult to control its spread. Recent evidence suggests that the production of PrPsc can be modulated by … …American Journal of Infectious Diseases, Vol. 3, Issue 3 · 30 Sep 2007 · 7,263 accessesView PDFCite
Research ArticleOpen accessIn the abstractClinical and Surgical Findings and Outcome Following Rumenotomy in Adult Dairy Cattle Affected with Recurrent Rumen Tympany Associated with Non-Metallic Foreign BodiesZ. Bani Ismail, A. Al-Majali, K. Al-QudahMedical records of 31 adult dairy cows suffering from recurrent rumen tympany for at least 1 month duration that underwent exploratory laparotomy and rumenotomy were reviewed and information was obtained on signalment, history, physical examination findings, laboratory findings and surgical findings. Cases were categorized according to surgical findings into 3 groups. Group 1 (n = 10) included cattle with reticuloruminal, … …American Journal of Animal and Veterinary Sciences, Vol. 2, Issue 3 · 30 Sep 2007 · 8,931 accessesView PDFCite
Research ArticleOpen accessIn the abstractVibrio cholerae O1 Strains of Different Ribotypes have Similar hlyA RFLP Patterns but Different Vacuolating AbilityJorge E. Vidal, Paula Figueroa-Arredondo, Silvia Giono-Cerezo et al.Extensive cytoplasmic vacuolation on Vero and HeLa cells in vitro by the Vibrio cholerae pore forming toxin HlyA, has been previously reported by our group. Vibrio cholerae O1 and non-O1 pathogenic strains show differences in the potential to induce vacuolation, here we study occurring variations on vacuolating cytotoxic ability, related to changes in the nucleotide sequence of the hlyA-orf. A … …American Journal of Infectious Diseases, Vol. 3, Issue 2 · 30 Jun 2007 · 6,989 accessesView PDFCite
Research ArticleOpen accessIn the abstractExpression of Thioredoxin-Fusion Proteins of α-Gliadin, γ-Gliadin and Low Molecular Weight Glutenin, from Wheat Endosperm and their Domains in EnterobacteriaClaudia G. Benitez-Cardoza, Yves Popineau, Jacques GueguenWheat seed storage proteins play a determining role in the viscoelastic properties of wheat gluten. The genes encoding α-gliadin, γ-gliadin and Low Molecular Weight glutenin and their N-central-repetitive and C-terminal domains from wheat endosperm had been subcloned into a thioredoxin expression system (pET102/D-Topo) and produced as fusion proteins in E. coli. The expression levels for each of the proteins varied … …American Journal of Infectious Diseases, Vol. 3, Issue 2 · 30 Jun 2007 · 6,748 accessesView PDFCite