this study was performed to assess the effects of nitrogen fertilizer and vermicompost on qualitative and quantitative yield of chamomile ( matricaria chamomilla l.). it was conducted at the research fields of ran company located in firouzkouh, iran, in 2013. treatments were consisted of 1) control, 2) 100% nitrogen from urea, 3) 100% nitrogen from ammonium nitrate, 4) 75% nitrogen from urea an...

objective: this study was designed to investigate the effect of hydroalcoholic extract and essential oil of heracleum persicum (apiaceae) on lipid profile of male hyperlipidemic rabbits. materials and methods: thirty rabbits were randomly divided into six groups of five each. one group received normal diet and the other groups fed with a high cholesterol (2% w/w) diet for 7 weeks. vehicle, hydr...

phytochemicals are good sources of natural antioxidants and have beneficial effects on human health. many of phenolic phytochemicals have shown antimicrobial and antifungal activity. anise hyssop ( agastache foeniculum [pursh] kuntze ) is a perennial aromatic plant of the lamiaceae family with antimicrobial and antifungal properties and useful for gastrointestinal problems. in this investigatio...

Treatment of hydrocarbon-rich industrial wastewater in bioreactors using heterotrophic microorganisms is often associated with various operational problems. In this study, a consortium of phototrophic microorganisms and a bacterium is developed on the discs of a rotating biological contactor (RBC) for treatment of wastewater containing diesel oil. The reactor was fed with oil degrading bacteriu...

Oil and natural gas development in the Bakken shale play of North Dakota has grown substantially since 2008. This study provides a comprehensive overview and analysis of water quantity and management impacts from this development by (1) estimating water demand for hydraulic fracturing in the Bakken from 2008 to 2012; (2) compiling volume estimates for maintenance water, or brine dilution water;...

BACKGROUND Essential oils are used in perfumery and in products for aromatherapy or balneotherapy. Previous studies have shown some to be important contact sensitizers. A practical diagnostic approach, based on the results of a large, central European network and other evidence, is needed. METHODS Data of the Information Network of Departments of Dermatology (IVDK; www.ivdk.org) on all patien...

This work aimed to produce hydrogen (H₂) simultaneously with pollutant removal from biodiesel wastewater by photocatalytic oxidation using a thermally-treated commercial titanium dioxide (TiO₂) photocatalyst at room temperature (~30 °C) and ambient pressure. The effects of the operating conditions, including the catalyst loading level (1-6 g/L), UV light intensity (3.52-6.64 mW/cm²), initial pH...

When wastewater from oil and gas extraction is accidentally or illegally released into the environment, the ecological impacts can be immediate and readily visible. Less is known about the potential human health impacts of these briny releases.