18 research outputs found

    Algae personification toxicity by GC–MASS and treatment by using material potassium permanganate in exposed basin

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    AbstractThis study was conducted to address algal toxins using potassium permanganate through the control of biomass growth of algae under following conditions value 25±1 °C illumination intensity value 245microeinstein/m2/s, using the culture media Chu-10 Modified for the purpose of development algae. We treated algal toxins belonging to groups of Neurotoxins, Hepatotoxins, Pyriproxyfen, Emodin, Brevetoxins-10 (A) and Cytotoxins using concentrations of potassium permanganate represented by 2, 4, 8 and 16mg/l with alum concentration for each concentration of 30mg/l, as the removal rate reached to 100% of the toxin blooms in concentrations of 8 and 16mg/l respectively, through the examination of algal toxins mediated by GC–MASS compared to the standard, which diagnosed a range of algal toxins with C2H3C12NO formulas of synthetic C9H13NO2, C18H27NO3, C11H12N2O6, C11H17N3O, C10H17N3O, C9H15Br2NO, CH4N2O2, C11H17NO2, C13H9BrN2O3, C3H7NO4S, C20H29NO3, C15H10O5, C4H8O2 and C2H2Cl3NO the concentrations 2 and 4mg/l turned toxic compounds into non-toxic compounds represented by C7H6O2, C5H6N2O, C12H11ClO4, C6H6O2, C12H10O4, C10H17N, C4H6O2 and C5H6N2O. The results showed reduced primary productivity of algae chlorophyll a result of substance to stop chloroplast for vital activity through the influence of the concentration of potassium permanganate values 0.571, 1.142, 0.583 and 1.713mg/l respectively, compared to the standard of 114.2mg/l. As diagnosed types of Algae producing toxins are represented by Microcystis aeruginosa, Microcystis flosaquae, Oscillatoria amoena, Oscillatoria amphibian, Oscillatoria boryana, Oscillatoria limnetica, Oscillatoria perornata, Phormidium ambiguum, Lyngbya digueti, Lyngbya major, Lyngbya nordgaadii, Lyngbya spirulinoides, Nostoc carneum, Nostoc spongiforme, Anabaena augstumalis, Chroococcus indicus and Chroococcus minor, as the dry weight of live Algae producing toxins is 17.342g/l

    Body Composition Changes after Weight-Loss Interventions among Obese Females: A Comparison of Three Protocols

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    AIM: To evaluate body composition changes after use of three different types of obesity management protocols: dietary measures and physical activity; acupuncture or laser acupuncture with healthy diet; aiming at achieving stable weight loss among obese Egyptian females.METHODS:  A randomized longitudinal prospective study included 76 obese adult females; aged 26 up to 55 years. Anthropometric, body composition, ultrasonographic and biochemical assessments were done.RESULTS: The three types of obesity management protocols showed significant improvement in body composition (decrease in fat% and increases in FFM and TBW) and visceral fat by US. However, nutritional intervention showed highly significant improvement in the skin fold thickness at triceps and biceps sites and peripheral adiposity index.  Acupuncture intervention showed highly significant improvement in fasting blood glucose (decreased) and lipid profile (decreased triglycerides, total cholesterol and LDL, and increased HDL). Laser intervention showed highly significant improvement in all the skin fold thickness and some parameters of lipid profile (decreased total cholesterol and LDL). CONCLUSIONS: The three obesity management protocols have significant effect on body composition, but acupuncture has the best effect in improving the lipid profile and fasting blood sugar. In addition, Laser intervention was recommended to improve skin fold thickness and subcutaneous fat

    Hur pÄverkar undervisningssprÄket fysikundervisningen? En studie om fysiklÀrare med svenska som modersmÄl som undervisar pÄ engelska

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    SammanfattningExamensarbetet handlar om hur undervisningssprÄket pÄverkar undervisningen i fysik. I denna studie Àr det fysiklÀrare med svenska som modersmÄl som undersöks. Studien undersöker fysiklÀrare som undervisar bÄde pÄ engelska och svenska.Som underlag för examensarbetet finns bland annat en enkÀt som jag utarbetat och skickat till lÀrare som undervisar i fysik pÄ bÄde svenska och engelska eller stÄr i begrepp att börja göra det. Ur svaren frÄn erfarna fysiklÀrare som undervisar pÄ ett annat sprÄk (bÄde svenska och engelska), har jag extraherat nio rekommendationer till lÀrare som precis har börjat undervisa pÄ ett sprÄk som inte Àr hennes/hans modersmÄl. Rekommendationerna handlar om hur han/hon kan utveckla sitt sprÄk, planera sina lektioner och lÀttare övervinna den osÀkerhet som kan finnas nÀr en lÀrare ska övergÄ frÄn att undervisa pÄ sitt modermÄl till att göra det pÄ ett annat sprÄk.Mitt examensarbete fokuserar pÄ lÀrares erfarenheter och upplevelser kring att undervisa pÄ engelska nÀr deras modersmÄl Àr svenska. Jag har undersökt vad fysiklÀrare med svenska som modersmÄl tycker om att undervisa pÄ engelska, hur svenska fysiklÀrare upplever att det Àr att undervisa pÄ engelska. Vilka problem stöter de pÄ och vilka rÄd har de att ge till andra lÀrare i samma situation?Nyckelord: Undervisning: (att lÀra ut), lust: (att vilja), inspirera: intresse, modersmÄl: (svenska), frÀmmande sprÄk (engelska). UtifrÄn de svar frÄn lÀrare som deltog i enkÀten kan jag konstatera att jag har förstÀrkts i min uppfattning om mervÀrdet av att undervisning pÄ engelskaHow can the language of instruction affect the teaching of the physics?A study on Swedish physics teachers who teach in Englis

    Hur pÄverkar undervisningssprÄket fysikundervisningen? En studie om fysiklÀrare med svenska som modersmÄl som undervisar pÄ engelska

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    SammanfattningExamensarbetet handlar om hur undervisningssprÄket pÄverkar undervisningen i fysik. I denna studie Àr det fysiklÀrare med svenska som modersmÄl som undersöks. Studien undersöker fysiklÀrare som undervisar bÄde pÄ engelska och svenska.Som underlag för examensarbetet finns bland annat en enkÀt som jag utarbetat och skickat till lÀrare som undervisar i fysik pÄ bÄde svenska och engelska eller stÄr i begrepp att börja göra det. Ur svaren frÄn erfarna fysiklÀrare som undervisar pÄ ett annat sprÄk (bÄde svenska och engelska), har jag extraherat nio rekommendationer till lÀrare som precis har börjat undervisa pÄ ett sprÄk som inte Àr hennes/hans modersmÄl. Rekommendationerna handlar om hur han/hon kan utveckla sitt sprÄk, planera sina lektioner och lÀttare övervinna den osÀkerhet som kan finnas nÀr en lÀrare ska övergÄ frÄn att undervisa pÄ sitt modermÄl till att göra det pÄ ett annat sprÄk.Mitt examensarbete fokuserar pÄ lÀrares erfarenheter och upplevelser kring att undervisa pÄ engelska nÀr deras modersmÄl Àr svenska. Jag har undersökt vad fysiklÀrare med svenska som modersmÄl tycker om att undervisa pÄ engelska, hur svenska fysiklÀrare upplever att det Àr att undervisa pÄ engelska. Vilka problem stöter de pÄ och vilka rÄd har de att ge till andra lÀrare i samma situation?Nyckelord: Undervisning: (att lÀra ut), lust: (att vilja), inspirera: intresse, modersmÄl: (svenska), frÀmmande sprÄk (engelska). UtifrÄn de svar frÄn lÀrare som deltog i enkÀten kan jag konstatera att jag har förstÀrkts i min uppfattning om mervÀrdet av att undervisning pÄ engelskaHow can the language of instruction affect the teaching of the physics?A study on Swedish physics teachers who teach in Englis

    TOLERANCE OF THE ALGAL SPECIES NAVICUAL BUSIEDTII TO HIGH CONCENTRATION OF SALINE LRANIAN WAST WATER

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    Algae diatom Navicual busiedtii used to decreasing salts of salty water with concentration 2, 4, 8, 16, 32 ppt. depending on diatoms ability for growing and reproduction at salty water environment. Recorded concentration in the end of Experiment is 0, 0, 2, 5.4, 23.1 ppt. respectively. Recorded higher vital number of Navicual busiedtii is 138.408 ×104 cell/ml with growing rate 2.39 cell/hour in short multiplication time 10.51 cell/hour with absorption 0.484 nm. of concentration 16 ppt. compared with control treatment which vital number of alga was 65.473 × 104 cell/ml with growing rate 1.76 cell/hour in multiplication time 13.97 cell/hour with absorption 0.320 nm. On the other hand the concentration 32 ppt. show powerless cells with vital number 74.355×104 with growing rate 1.16 cell/hour of multiplication period 19.21 cell/hour longer period than treatments of lower concentrations

    Biosorption of Lead, Cadmium and Nickle from Industrial Wast water by Using Dried Macroalgae

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    Biosorpion of lead (Pb), Cadmium (Cd) and Nickl(Ni) by dried biomass of Chara sp. for sample of BMP was used as alternative approach of conventional method. The range of removal percentages was between 92-97%, 70-98.7% and 46.6-96.6% for Pb, Cd and Ni respectively at 3h.Treatment time, with 300-500 mg dried weight from Chara sp. powder at pH 4, with 60 rpm at shaker. FTIR analysis showed the active groups which are responsible for sequestration of heavy metals represented by carboxyl, hydroxyl alkyl, amine and amide. The Biosorption equilibrium experiment for elements showed that the highest sorption percentage for three elements was, Pb 96.6% after 30 minute, for Cd was 100% after 15 minute and 40% to Ni after 75 minute, while the biosorption equilibrium by using Chara sp. was at 90 minute for Pb and Ni

    Bioremoval Capacity of Phenol by Microalgae

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    Bio-treatment of phenol contaminated wastewater by 3 types of algae (Anabaena fetilissima Sps., Chroococuss minor Sps., Westiellopsis prolifica Sps.) had been investigated by current study. This work was conducted using synthetic wastewater with different concentrations of phenol (0.5, 2 and 5 mg/L). The comparison between algae capacity for removal was established according to the cell concentration, initial phenol concentration and pH, this study was extended to include testing algae in treating high phenol concentration. Complete removal of phenol as a single aqueous solution in different concentrations (0.5, 2, 5 mg/L) was observed by Anabaena fetilissima species under optimum treatment conditions. Furthermore, Anabaena algae was able to remove high phenol concentration upto 100 mg/L with the minimal doubling time, high specific degradation and growth rate. These results nominated Anabaena algae to be the most sufficient and useful algae in treating phenolic among the studied algae species examined. The results indicated that the potential of natural resources as effective agent for pollution control
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