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354 results for “SPI”
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Research ArticleOpen accessEvery word in the titleBioaccumulation of Cr(III) ions by Blue-Green alga Spirulina sp. Part I. A Comparison with BiosorptionKatarzyna ChojnackaThe paper presents the results of studies on kinetics and equilibrium of bioaccumulation process of Cr(III) ions by blue-green alga Spirulina sp. Bioaccumulation was described as the process that consists of two stages, passive (identical with biosorption) and active (accumulation inside the cells). The passive stage (similarly as biosorption itself) was found to be quick process and the subsequent active … …American Journal of Agricultural and Biological Sciences, Vol. 2, Issue 4 · 31 Dec 2007 · 7,708 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffect of Magnetic Field on the Formation of Spin-polaron in Mn-Zn FerritesH. M.El SayedThe effect of magnetic field on the transport properties of Mn-Zn ferrite was studied. It was found that, the resistivity has an inverse relation with the applied magnetic field. This was attributed to the reduction of the scattering between the charge carriers and the disordered spins. Also, it was found that, the activation energy in the paramagnetic region is strongly … …American Journal of Applied Sciences, Vol. 3, Issue 10 · 31 Oct 2007 · 6,512 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleSpirulina protects against cadmium-induced hepatotoxicity in ratsAmr Amin, Alaaeldin A. Hamza, Sayel Daoud, Waleed HamzaCadmium (Cd) is an environmental and industrial cumulative pollutant that most affects many organs specially the liver. The protective effect of Spirulina, filamentous blue green algae, on Cd – induced oxidative stress and hepatotoxicity was evaluated in male rats. Oral administration of water extract of Spirulina for seven days followed by an acute toxic dose of Cd (3.5 mg kg … …American Journal of Pharmacology and Toxicology, Vol. 1, Issue 2 · 30 Jun 2006 · 11,537 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleInvestigation of Flow Energy Dissipation over Different Stepped SpillwaysG. A. Barani, M. B. Rahnama, N. SohrabipoorIn this study, to investigate energy dissipation of flow overstepped spillways of different step shapes, a physical wooden model has been built in the Shahid Bahonar University’s hydraulics lab. This model with 41.41° slope has 84 cm height and 21 steps. Each step has 4 cm height, 4.5 cm width and 30 cm length. Experiments have been carried out for … …American Journal of Applied Sciences, Vol. 2, Issue 6 · 30 Jun 2005 · 7,477 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffects of the Mass Transfer Process in Oil SpillFabián Betancourt, Arturo Palacio, Alejandro RodriguezA revision of the models used to study the behavior of the mass loss processes associated with petroleum spills on water and to compare those models with experimental data. The processes of mass transfer studied in this work are evaporating, dissolution, vertical dispersion, emulsification and the changes of properties associated with these. The comparison of the estimations with the field … …American Journal of Applied Sciences, Vol. 2, Issue 5 · 31 May 2005 · 7,507 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleA New Spectrophotometric Method for Determination of Iron in Herbs, Spices and Beans with 2,6-Diacetylprydine Dioxime and 2-Acetylpyridine MonoximeZ. R. Komy, E. A. Abu-Gharib, A. DesokyThe reaction of iron (II) with 2, 6-diacetylprydine dioxime (H2dapd) and 2-acetylprydine monoxime (Hapm) in 10% and 60% v/v ethanol-water solution at pH 2.5 and 7.5, respectively, were studied using direct and first derivative spectrophotometry. Fe (III) is reduced by H2dapd and gives iron (II) complex. A simple, rapid, selective and sensitive method for the determination of Fe (II), Fe … …American Journal of Applied Sciences, Vol. 2, Issue 4 · 30 Apr 2005 · 6,966 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleImprovements on Semi Critical Assisted-Solvent Extraction of Biocrude Oil from Spirogyra. sp Macro AlgaeTulio Chavez-Gil, Hany F. Sobhi, Alexis Pacheco-LaracuenteHere, we report on an improved chemical method to extract hydrocarbons (CH) and Fatty Acid Methyl Esters (FAME) from wild green macro algae, which is higher than that carried out with conventional Soxhlet (Sx) and similar to that of Subcritical (SbC) or supercritical fluid (SCE) extraction methods. Crude oil plus residual biomass gave combined calorific values of 49.05 MJ/kg in … …American Journal of Biochemistry and Biotechnology, Vol. 14, Issue 2 · 18 Apr 2018 · 10,085 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEcofriendly Management of Two Spotted Spider Mites on Tomato (Solanum lycopersicum (Mill.) in Eastern EthiopiaBelachew DabaloOne of the most widely grown vegetable crops in Ethiopia is the tomato (Solanum lycopersicon). Two Spotted Spider Mites (TSSM) are the primary pests that pose a threat to tomato production in Eastern Ethiopia. Synthetic pesticides remain the primary method of controlling TSSM, but because of the pest's high fecundity, inbreeding, arrhenotokous reproduction, high mutation rate, and short life cycle, … …American Journal of Agricultural and Biological Sciences, Vol. 19, Issue 1 · 12 Oct 2024 · 6,347 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleComparative Study of Properties of Biopolymers from Corn Starch with Addition of Microalgae Spirulina platensisJúllia Koury Abreu, Loraynne Coelho Pereira, José Izaquiel Santos da SilvaThe discovery of the environmental impacts caused by petroleum-based polymers has led to the use of natural polymers gaining more and more space. Naturally occurring polymers, also known as biopolymers, are chemical compounds produced by living things or raw materials from renewable energy sources. Their main advantage is decomposition, while polymers from fossil and non-renewable energies can take hundreds of … …American Journal of Engineering and Applied Sciences, Vol. 16, Issue 1 · 16 Mar 2023 · 6,032 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleHost Plant-Induced Susceptibility of Two-Spotted Spider Mite Tetranychus urticae (Acari: Tetranychidae) to Some Reduced-Risk AcaricidesTarikul IslamThe two-spotted spider mite Tetranychus urticae (Acari: Tetranychidae) is a cosmopolitan pest of a large number of host plants having extensive damage potential and the terrific ability of pesticide resistance. In the present study, spider mite population were reared continuously on the leaves of three susceptible host plants namely country bean (Phaseolus vulgaris L), papaya (Carica papaya L) and jute … …American Journal of Agricultural and Biological Sciences, Vol. 14, Issue 1 · 14 Apr 2018 · 9,340 accessesView PDFCite