background: tetracyclines (tcs) are broad-spectrumantibiotics that are widely used in veterinary medicine. thepresence of tcs residues in milk is a public health concern allover the world. objectives:this study aimed to determine tcsresiduals in pasteurized milk marketed by some dairy companiesin tehran from april 2011 to march 2012. methods: 432pasteurized milk samples were purchased from supe...

The main sources of environmental pollution with heavy (ecotoxic) metals include industry, including utility and municipal power engineering, but also waste incineration plants. Fuel shortages their constantly growing prices raise concerns that energy will be commonly obtained from outside installations intended for this purpose (i.e., plants). greatest concern stems the risk burning in low-pow...

Introducing deterrents improves the thermal stability of nitrocellulose propellant surface, but is accompanied with inevitable problems, such as migration, residue, smoke flame, and so on. In this paper, sodium carboxymethyl function groups were chemically grafted to molecular chains by reaction denitration following etherification, which provided stability, flame suppression ion without deterr...

The high-altitude balloon (HAB) platform has allowed scientists to measure vertical profiles in the atmosphere at a relatively low cost. current project combines HAB with low-cost air quality sensors that particulate matter (PM). PM is detrimental human health and can exacerbate asthma. In atmosphere, affect cloud formation also radiative transfer, which links emissions of climate change. There...

The influence of the initial fuel temperature on the burning behavior of n-heptane pool fire was experimentally studied at the State Key Laboratory of Fire Science (SKLFS) large test hall. Circular pool fires with diameters of 100mm, 141 mm, and 200 mm were considered with initial fuel temperatures ranging from 290 K to 363 K. Burning rate and temperature distributions in fuel and vessel wall w...

The burning of agricultural residue from previous season’s rice crop, primarily in the states Punjab and Haryana, is a key contributor to poor air quality during winter across North India. Air can deteriorate catastrophic levels Agricultural Waste Burning (AWB) season October–November, when fine particulate matter (PM2.5) concentrations exceed WHO daily maxima over sustained period by an order ...

Abstract Fly ash is the residue from burning coal in form of fine and light particles can be harmful to environment life. Whereas fly contains high silica so that it used as a precursor for zeolite blinding. Zeolite an adsorbent aquatic waste needs improved absorb more adsorbate. Therefore, necessary modify ash, such coating with manganese iron oxide. The made extraction synthesize using hydrot...

Various published data show the amount of crop residue available annually in India may range from a low 90 to high 180 million tonnes. Different types are collected farmers depending on geography and pattern for instance, north rice straw cotton stalks while central soya husk sugarcane tops collected. Baling transporting field, though appear be an option safe disposal, will feasible only when a...

objectives this study investigates the prevalence of burning mouth symptom for the first time in an institutional group of patients in shiraz, iran, among whom some were found to have bms through excluding the recognizable physical or biochemical causes of mouth burning. methods in this cross sectional study, from the existing records of 2 533 patients who referred to shiraz dental school since...

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