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261 articles for “Oxygen”
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Review ArticleOpen accessEvery word in the titleA Review of Detection Techniques for Chemical Oxygen Demand in WastewaterDan Wu, Yinglu Hu, Ying LiuWater pollution is a major problem all over the world, the detection techniques of water play an important role in the evaluation of water pollution. Chemical Oxygen Demand (COD) is an important index of the evaluation of water pollution. The paper reviews the detection methods of chemical oxygen demand in wastewater, introduces the standard of chemical oxygen demand emission limit … …American Journal of Biochemistry and Biotechnology, Vol. 18, Issue 1 · 27 Jan 2022 · 8,917 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleInfluence of Intracellular Reactive Oxygen Species in Several Spermatozoa Activity in Indonesian Ongole Bull Cryopreserved SpermKurniawan Dwi Prihantoko, Asmarani Kusumawati, Mulyoto Pangestu et al.Certain factors may affect sperm motility and integrity in a freezing process. Reactive Oxygen Species (ROS) is essential in damaging the sperm, as the previous study revealed that ROS is a major cause damaging the membrane of spermatozoa. This study aimed to understand ROS production and its interaction within the motility, mitochondrial activity and DNA damage to the cryopreservation process … …American Journal of Animal and Veterinary Sciences, Vol. 17, Issue 1 · 26 Jan 2022 · 6,842 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleFluctuation of Brain Tissue Oxygen Partial Pressure: A Biochemical Landmark in the Arctic Ground Squirrel's Spontaneous ArousalYi Long Ma, Shu Fen Wu, Lawrence K. DuffyHibernation in the Arctic ground Squirrel (AGS) is a regulated, adaptive response to arctic environmental conditions. Problem statement: Regional brain Blood Flow (rCBF) has been observed to increase dramatically during arousal in hibernators. However, the real time dynamic change in PtO2 during arousal has not been studied, we hypothesized that PtO2 is Interdependent of Tbrain and a key component in … …American Journal of Biochemistry and Biotechnology, Vol. 7, Issue 4 · 1 Feb 2012 · 7,601 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffect of Pressure, Water Depth and Water Flow Rate on Oxygen Saturation Level in Activated Sludge ProcessNabil N. Atta, Amro A. Elbaz, Alhassan H. SakrProblem statement: The role of aeration in activated sludge process is to provide oxygen to microorganisms as they assimilate the organic carbon compounds and digest a portion of them to carbon dioxide and water, sulfate and nitrate compounds. The water aeration equipment used in this process consumes as much as 60-80% of total power requirements in modern wastewater treatment plants. … …American Journal of Engineering and Applied Sciences, Vol. 4, Issue 4 · 21 Dec 2011 · 8,741 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEvaluation of Hydrogen/Oxygen Release Compounds for the Remediation of VOCsS. Fiore, M.C. ZanettiProblem statement: Volatile Organic Compounds (VOCs) were widespread in groundwater of industrialized areas and in situ remediation intervents characterized by a high environmental compatibility were of main interest. The scope of this study was the evaluation of the potential of two innovative reagents (HRC and ORC from Regenesis) for the remediation of Volatile Organic Compounds (VOCs). The reagents respectively perform … …American Journal of Environmental Sciences, Vol. 7, Issue 5 · 4 Nov 2011 · 7,439 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleImpact of Oxygen Enriched Air Intake on the Exhaust of a Single Cylinder Diesel EngineKuppusamy Rajkumar, Palanisamy GovindarajanProblem statement: The objective of the research is to investigate the effect of using oxygen enriched air on Diesel engine exhaust emission. Approach: In the present experimental work a computerized Single cylinder Diesel engine with data acquisition system was used to study the effects of oxygen enriched air intake on Exhaust emissions. Engine test has been carried out in the … …American Journal of Environmental Sciences, Vol. 7, Issue 2 · 26 May 2011 · 7,465 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleFactors Affecting the Oxygenation Capacity of Disc Aerators in an Oxidation Ditch SystemAbdel Ghaly, Skai EdwardsProblem statement: The use of aerobic biological methods for the treatment of livestock wastes has resulted in a proliferation of mechanical aeration devices to accomplish the desired treatment. The oxidation ditch system with disc aerators is among the aerobic systems that have been used to treat livestock waste. The main objectives of this study were to investigate the effects of … …American Journal of Environmental Sciences, Vol. 7, Issue 2 · 26 May 2011 · 7,536 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffects of Hyperoxia on Brain Tissue Oxygen Tension in Non-Sedated, Non- Anesthetized Arctic Ground Squirrels: An Animal Model of Hyperoxic StressYilong Ma, Shufen Wu, Lawrence DuffyArctic Ground Squirrels (AGS) are classic hibernators known for their tolerance to hypoxia. AGS have been studied as a model of hypoxia with potential as a medical research model. Problem statement: Their unique resistance to the stressors of low oxygen led us to hypothesize that AGS might also be adaptable to hyperoxia. Approach: This study examined the physiological pattern associated … …American Journal of Animal and Veterinary Sciences, Vol. 6, Issue 1 · 26 Apr 2011 · 8,473 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Effects of Excess Oxygen to Mixture on the Gasses Emissions of a Gasoline EngineWaleed MomaniProblem statement: The effects of excess feeding oxygen to the fuel-air mixture on the exhausts gasses emissions concentrations are investigated here. It is known that spark-ignition and diesel engines are considered as major sources of urban air pollution; such pollutants are CO2, CO, HC. Hence, many techniques have been used to decrease such emissions such as: Catalytic converters, oxidizers, traps … …American Journal of Applied Sciences, Vol. 6, Issue 6 · 30 Jun 2009 · 7,513 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffects of Oxygenated Gasoline on Fuel and Air Mass Flow Rates and Air-Fuel RatioWaleed Momani, Suleiman Abu-Ein, Montaser Momani, Sayel M. FayyadThe effects of excess feeding oxygen to the fuel-air mixture on air and fuel mass flow rates and also on air-fuel ratio are investigated here experimentally. This study concerned with the effects of injecting pure oxygen quantity to the mixture of fuel and air before interring the combustion chambers. It is found that the mass flow rate of fuel with … …American Journal of Applied Sciences, Vol. 6, Issue 5 · 31 May 2009 · 7,367 accessesView PDFCite