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105 articles for “PPM”
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Research ArticleOpen accessIn the abstractBER Performance and Data Throughput of Sinusoidal Template-Based Impulse-Radio Ultra Wideband Receivers for Wireless Body Area NetworksMohamad Abou El-Nasr, Heba ShabanWindowed sinusoidal template-based correlator receivers are good candidates for high-data rate low-power Ultra Wideband (UWB) systems. Their performance approaches the performance of optimal detectors and provides low-power consumption. However, the ultra short pulses of UWB technology makes it sensitive to timing-errors. In this paper, the Bit-Error-Rate (BER) performance and maximum allowable data throughput of Equally-Correlated Pulse Position Modulation (EC-PPM) modulation … …American Journal of Applied Sciences, Vol. 10, Issue 5 · 30 May 2013 · 6,507 accessesView PDFCite
Research ArticleOpen accessIn the abstractHair Lead Bio-Monitoring Among School Children in the Province of Cavite, PhilippinesJanet P. Macawile, Glenn L. Sia SuAirborne lead is one of the pressing environmental problems that cause neuropsychological impairments to people who are exposed to it. In assessing people’s exposure to airborne lead, bio-monitoring techniques has been used as an indicator of chemical exposure. This study aims to determine the hair lead concentrations among school children in the province of Cavite and compare the hair lead … …American Journal of Environmental Sciences, Vol. 8, Issue 6 · 22 Jan 2013 · 7,039 accessesView PDFCite
Research ArticleOpen accessIn the abstractAn Assessment of Echocardiography as a Diagnostic Tool for Dilated Cardiomyopathy in Turkey (Meleagris gallopavo)Davida Kamara, Kwaku Gyenai, Tuoyu Geng et al.Our understanding of the etiology of Dilated Cardiomyopathy (DCM), which affects about 5% of turkeys, is limited. This limitation may be due to the lack of an easy-to-use diagnostic tool with well-defined parameters and does not involve necropsy. This lack of a widely tested non-necropsy method makes it difficult for a large-scale study of the genetic factors that underlie DCM. … …American Journal of Animal and Veterinary Sciences, Vol. 7, Issue 3 · 15 Aug 2012 · 8,456 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffects of Temperature and Flow Rates of Ozone Generator on the DBD by Varying Various Electrical ParametersBalakrishnan Anantharaman Poonamallie, Lakshminarayanan Vaduganathan, Mahendran NagalingamThis study rationale a high voltage power supply which varies of (O-5) kV with the variable frequency of 50 Hz-5 kHz. The power supply is used in the dielectric barrier discharge tube for the ionization process to yield concentration of ozone.This setup points the development of small and high efficient ozone generators using corona discharge method. Ozone generation was carried … …American Journal of Applied Sciences, Vol. 9, Issue 9 · 6 Aug 2012 · 8,305 accessesView PDFCite
Research ArticleOpen accessIn the abstractRemoval of Hydrogen Sulphide from WaterS. Edwards, R. Alharthi, A.E. GhalyProblem statement: The concentration of H2S in groundwater is a significant problem in various areas across Canada. Hydrogen sulphide dissolves in ground water imparting undesirable taste and irritating rotten egg smell which makes it unpalatable. Ingestion of sulphides through drinking water can result in stomach discomfort, nausea and vomiting. Humans exposed to high concentrations of H2S for prolonged periods show … …American Journal of Environmental Sciences, Vol. 7, Issue 4 · 26 Aug 2011 · 15,129 accessesView PDFCite
Research ArticleOpen accessIn the abstractMicrobial Consortia from Taptapani Hot Water Springs for Mining Effluent TreatmentPoonam Nasipuri, Gauri G. Pandit, Ashoke Ranjan Thakur, Shaon Ray ChaudhuriProblem statement: Soluble sulfate load in effluent is a crucial problem from mining industries. The study involved isolation of efficient Sulfate Reducing Bacterial (SRB) consortium from hot water spring for bioremediatrion of sulfate contaminated waste water. Approach: The enriched bacterial consortium was isolated in medium DSMZ 16695. The sulfate reduction efficiency was measured by turbidometric method. The Km and Rmax … …Current Research in Microbiology, Vol. 1, Issue 2 · 31 May 2011 · 8,463 accessesView PDFCite
Research ArticleOpen accessIn the abstractRemoval and Recovery of Lead from Aqueous Solution by Low Cost MediaLucia Pappalardo, Fawwaz Jumean, Naser AbdoProblem statement: To remove Pb(II) from wastewater using local UAE sand and then to recover the removed Pb(II). Approach: Removal efficiency of Pb(II) from wastewater was investigated using white, yellow and red United Arab Emirates sand with pore sizes < 300 μm. Two methods were employed: batch equilibrium and column filtration. In the batch equilibrium study, the effect of sand … …American Journal of Environmental Sciences, Vol. 7, Issue 2 · 26 May 2011 · 6,915 accessesView PDFCite
Research ArticleOpen accessIn the abstractSynthesis, Characterization and Biological Activities of Organotin (IV) Methylcyclohexyldithiocarbamate CompoundsNormah Awang, Ibrahim Baba, Bohari M. Yamin et al.Problem statement: The growing interest in the chemistry of sulphur donor ligands are due to their encouraging anticancer, antibacterial and antifungal activities as well as their widespread industrial application. Dithiocarbamates belong to this class and much attention has been paid to them. Approach: Novel organotin compounds with the molecular formula RmSn[S2CN(CH3)(C6H11)]4-m (where m = 2, R = CH3, C2H5; m … …American Journal of Applied Sciences, Vol. 8, Issue 4 · 18 Apr 2011 · 9,214 accessesView PDFCite
Research ArticleOpen accessIn the abstractArsenic, Nickel and Iron Concentration levels in Water Samples from Hand-Dug Wells from Ugbe AkokoO.M. Afolabi, I.R. Ajayi, R.S. Fayose et al.Problem statement: The concentration of Arsenic, Nickel and Iron from twenty water samples from Ugbe Akoko in Ondo state, Nigeria was determined with atomic absorption spectrometer and conductivity meter. Approach: The aims are to determine the level of concentration of the three heavy metals in the well water, the relationship between the WHO reference standard for pure water and the … …American Journal of Applied Sciences, Vol. 8, Issue 2 · 28 Feb 2011 · 7,628 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Drying Kinetics of Chilies using a Rotating Fluidized Bed TechniqueWatcharin Dongbang, Worachest Pirompugd, Kittichai TriratanasirichaiProblem statements: The present study investigates experimentally the drying of chilies (Capsicum annuum L.) with rotating fluidized bed technique and the biological properties: capsaicin content, moisture diffusivity and activation energy. Approach: The drying experiment was conducted at the drying air temperatures ranged 70-120°C and the drying air velocity was fixed at 1.8 m sec-1, while the layer's height was fixed … …American Journal of Applied Sciences, Vol. 7, Issue 12 · 31 Dec 2010 · 7,429 accessesView PDFCite