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228 articles for “absorption”
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Research ArticleOpen accessEvery word in the titleAtomic Absorption Spectrometric Determination of Certain Fluoroquinolones in Pharmaceutical Dosage Forms and in Biological FluidsH. Salem, W. Khater, L. FadaSimple, accurate, sensitive and selective methods are described for the quantitative determination of ten fluoroquinolones (amifloxacin, ciprofloxacin hydrochloride, difloxacin hydrochloride, enoxacin, enrofloxacin, lomefloxacin hydrochloride, levofloxacin, norfloxacin, ofloxacin and pefloxacin mesylate). The methods are based on precipitation of the ion associates formed from the reaction of the cited drugs with silver nitrate, copper acetate and ferric chloride. The formation and solubility … …American Journal of Pharmacology and Toxicology, Vol. 2, Issue 2 · 30 Jun 2007 · 7,419 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleDesign and Simulation of an Absorption Diffusion Solar Refrigeration UnitB. Chaouachi, S. GabsiThe purpose of this study was the design and the simulation of an absorption diffusion refrigerator using solar as source of energy, for domestic use. The design holds account about the climatic conditions and the unit cost due to technical constraints imposed by the technology of the various components of the installation such as the solar generator, the condenser, the … …American Journal of Applied Sciences, Vol. 4, Issue 2 · 28 Feb 2007 · 7,677 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThermodynamic Investigation of Two-Stage Absorption Refrigeration System Connected by a CompressorL. Kairouani, E. Nehdi, R. B. IffaThe present work is to analyze a two-stage cycle based on the ammonia-water absorption system, with intermediate compression. The two generators of the system are heated by geothermal energy at low temperature. The study shows that this system makes it possible at lower generator temperature, under the limits permitted by the systems suggested up to now. For Tg = 335 … …American Journal of Applied Sciences, Vol. 2, Issue 6 · 30 Jun 2005 · 6,737 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThermodynamic Analysis of an Absorption/Compression Refrigeration System Using Geothermal EnergyL. Kairouani, E. NehdiThis article presents the potential use and exploration of geothermal energy for cooling applications using a combined absorption/compression system. The considered system uses R134a for the compression part and the cool water-ammonia for the absorption part of the installation. The geothermal temperature source is in the range 343-349K, the condensation temperature is 308 K, and in order to produce ice, … …American Journal of Applied Sciences, Vol. 2, Issue 5 · 31 May 2005 · 7,554 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleSpectrofluorimetric, Atomic Absorption Spectrometric and Spectrophotometric Determination of Some FluoroquinolonesHesham SalemSimple, accurate, sensitive and selective spectrofluorimetric, atomic absorption spectrometric and spectrophotometric methods are described for the quantitative determination of ten fluoroquinolones (amifloxacin, ciprofloxacin hydrochloride, difloxacin hydrochloride, enoxacin, enrofloxacin, lomefloxacin hydrochloride, levofloxacin, norfloxacin, ofloxacin and pefloxacin mesylate). The first method was a spectrofluorimetric method in which samples of the studied drugs in 0.1 N H2SO4 showed native fluorescence at 450 nm … …American Journal of Applied Sciences, Vol. 2, Issue 3 · 31 Mar 2005 · 7,317 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffect of a Phytomineral Complex and an Enzyme Preparation on the Absorption of Nutrients and the Energy Balance of Calves' DietEvgeniia Erenko, Aleksandr Ovchinnikov, Marat Aubakirov et al.Cost-effective animal husbandry directly depends on the correct breeding of replacement young animals using diets corresponding to the feeding rate for all nutrition elements of the detailed system. Critical to these diets are biogenic elements, pivotal in enzymatic reactions and immune defense. However, specifics on enhancing nutrient absorption through dietary supplements remain underexplored, particularly in the context of calves' preweaning … …OnLine Journal of Biological Sciences, Vol. 24, Issue 4 · 12 Jun 2024 · 4,592 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffect of Sorbitol Calcium Chelate on Yield and Calcium Nutrient Absorption of PeanutChang Liu, Yupeng Li, Wentao Huo et al.Sorbitol has the effect of promoting nutrient absorption, so it has the potential to produce excellent fertilizers. In this study, sorbitol calcium chelate was synthesized using sorbitol as the chelating agent. The effects of sorbitol calcium chelate on peanut were investigated, with the goal of promoting peanut yield and improving the utilization of calcium fertilizer. Field experiments were carried out … …American Journal of Biochemistry and Biotechnology, Vol. 17, Issue 2 · 19 Apr 2021 · 7,365 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAnalyze the Absorption Properties and I-V Characterization of Dye Sensitized Solar Cell Using Ruthenium DyeAnees Ur Rehman, Farooq Aslam, Haseeb Ahmad KhanIn this study, Dye Sensitized Solar Cells (DSSC) has been fabricated using natural organic dye extracted from Ruthenium Dye and its I-V characterization and absorption properties have been analyzed. It is observed that the selected natural dye absorbed all visible light and supports electrons motion across the semiconductor interface. The dye acts as sensitizer because the titanium dioxide (TiO2) cannot … …American Journal of Engineering and Applied Sciences, Vol. 7, Issue 4 · 30 Dec 2014 · 7,391 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleDetermination of Lead in Human Teeth by Hydride Generation Atomic Absorption SpectrometryHassan T. AbdulsahibProblem statement: The determination of lead in human teeth at concentration levels of μg/ml is proposed using Hydride Generation Atomic Absorption Spectrometry (HG-AAS). To do this, 2% (wv) lanthanum chloride solution was employed as matrix modifying reagent to increase sensitivity and remove matrix interferences. Approach: About 100 μL of sample and 100 μL of 3.0% (m/v) NaBH4 are simultaneously injected … …American Journal of Environmental Sciences, Vol. 7, Issue 5 · 31 Oct 2011 · 7,133 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleStudy of the Effects Irrigation Water Sanity and pH on Production and Relative Absorption of some Elements Nutrient by the Tomato PlantHossein Afshari, Shahram Ashraf, Abdol Ghaffar Ebadi et al.Problem statement: This study was conducted to examine the effects of irrigation water pH and Salinity on the growth and absorption of P, Na, Ca, K by tomato. Approach:The study includes two Salinity and pH factors and is consisted from 12 treatment and three repetitions. Tomato seeding grown in foam trays were transplanted in the joune 2010 to bags filled … …American Journal of Applied Sciences, Vol. 8, Issue 8 · 18 Jul 2011 · 7,695 accessesView PDFCite