A method for the determination of trace amounts of the herbicide oxadiazon was developed using headspace solid-phase microextraction (HS-SPME), gas chromatography-mass spectrometry (GC-MS) and selected ion monitoring. It was applied to determine oxadiazon in ground water, agricultural soil, must, wine and human urine samples. To determine oxadiazon in liquid samples, a response surface methodol...

Water resources management is one of the most important issues and challenges in world. This may be form quality or quantitative water resources. Quality great importance. A major problem this case how input flow (for example a river) will behave when flows to dam reservoir lake. Distribution stream reservoir/lake depends on parameters such as inflow discharge, depth, situation type outlet, inl...

Air pre-cooling equipment is normally being employed in air-conditioning systems for pre-cooling the ambient outdoor air to enhance the air-conditioning systems performance. In this study, the potential of a passive water-to-air heat pipe based heat exchanger (HPHEX) for air pre-cooling purpose in air-conditioning systems for the high cooling load demanding regions of Iran was investigated. To ...

Monte Carlo Ray Tracing: MCRT based sensitivity analysis of the geophysical parameters (the atmosphere and the ocean) on Top of the Atmosphere: TOA radiance in visible to near infrared wavelength regions is conducted. As the results, it is confirmed that the influence due to the atmosphere is greater than that of the ocean. Scattering and absorption due to aerosol particles and molecules in the...

Microencapsulation protects sensitive nutrients, masks flavors, or enhances delivery. Ratios of maltodextrin and γ-cyclodextrin (20:0, 19:1, and 17:3% w/w) were dissolved in water and mixed with pomegranate juice for spray drying with inlet temperatures of 120, 140, and 160°C. The effects on physical properties (water activity, % water content, color, pH, soluble solids (Brix), and methyl cellu...

This study shows the benefits of using high molecular weight cationic polyacrylamide (PAM) in the purification of wastewater discharged from a wet scrubber in secondary lead smelter for reuse. The effect of temperature, pH, filtration pressure, polymer dose and different types of filtration fabrics on filtration rate (x), efficiency (ε) and quality of the produced water for recycling have bee...

two-dimensional hydrodynamic and advection-dispersion simulations were carried out toidentify the appropriate locations of inlet and outlet for cool seawater discharges from the proposed liquefiednatural gas (lng) terminal using mike-21 suites of software. the model simulations were validated bycomparing the observed and simulated hydrodynamics in terms of water depths, current speeds and direc...

Effluent water from shrimp ponds typically contains elevated concentrations of dissolved nutrients and suspended particulates compared to influent water. Attempts to improve effluent water quality using filter feeding bivalves and macroalgae to reduce nutrients have previously been hampered by the high concentration of clay particles typically found in untreated pond effluent. These particles i...

Many irrigation ponds in Fukushima Prefecture were decontaminated due to the contamination of radiocesium released from Daiichi Nuclear Power Plant. To evaluate impact decontamination on 137Cs dynamics an urban pond Koriyama City, Prefecture, Japan, temporal changes concentrations bottom sediments and water investigated before after bottom-sediment removal. Post-decontamination, inventories dec...