- Branche: Education
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Founded in 1879 and named after Texas' greatest hero General Sam Houston, Sam Houston State University is public shcool within the Texas state university system and located in Huntsville, Texas.
It's a multicultural institution that offers 79 bachelorette degree programs, 54 masters and five ...
A toxic compound that was established as a federal hazardous air pollutant in 1993. Sources of vinyl bromide may include rubber substitution, flame-retarding treatment of acrylics, laminating, and/or preparing films. It is also important to point out that vinyl bromide may be the result of the atmospheric degradation of 1,2-dibromoethane. Based on a typical atmospheric gas phase reaction with a hydroxyl radical, the lifetime of vinyl bromide in the atmosphere is between 1. 5 and 2. 1 days resulting in the products formaldehyde and formyl bromide.
Industry:Chemistry; Weather
A transition from the last glacial period, to the present interglacial period punctured by a brief and intense return to cold conditions around 10,900 years ago. Scientists believe this occurred because of the changes in atmospheric circulation resulting from large releases of melt water from glaciers.
Industry:Chemistry; Weather
A type of anaerobic respiration which uses atoms other than oxygen as the final electron acceptor. Fermentation occurs in bogs and marshes resulting in the production of CH<sub>4</sub> and CO<sub>2</sub> as well as other compounds such as ethanol, lactic acid, butyric acid, and acetone.
Industry:Chemistry; Weather
A United States Government agency created in 1970 as part of the United States Department of Commerce to determine how our oceans and atmosphere should be developed, regulated, analyzed, formed, and mined. NOAA tries to achieve these goals with the help of eight major federal services, The National Oceanic Survey, The National Weather Service, The National Fisheries Service, The Environmental Research Laboratories, The Environmental Data Service, The Environmental Satellite Service, The Office of Sea Grant, and The Office of Coastal Zone Management. NOAA has been threatened with extinction in the spring of 1995 with the possible dissolution of the Department of Commerce under the guise of "necessary" budget cuts.
Industry:Chemistry; Weather
A volatile organic compounds whose formula is C<sub>5</sub>H<sub>10</sub>O. It is released from combustion exhaust and solvent use. This is a compound that undergoes photolysis around the wavelengths of 302-320 nm and produces the acyl radical. That reactive species reacts with molecular oxygen to form a peroxide which can oxidize NO to NO<sub>2</sub> :
CH<sub>3</sub>CH<sub>2</sub>C(=O)CH<sub>2</sub>CH<sub>3</sub> + hv ---> CH<sub>3</sub>CH<sub>2</sub>C(=O)<sup>. </sup> + CH<sub>3</sub>CH<sub>2</sub><sup>. </sup>
CH<sub>3</sub>CH<sub>2</sub>C(=O). + O<sub>2</sub> ---> CH<sub>3</sub>CH<sub>2</sub>C(=O)O<sub>2</sub><sup>. </sup>
CH<sub>3</sub>CH<sub>2</sub>C(=O)O<sub>2</sub><sup>. </sup> + NO ---> NO<sub>2</sub> + CH<sub>3</sub>CH<sub>2</sub>CO<sub>2</sub><sup>. </sup>
And finally the acylate radical CH<sub>3</sub>CH<sub>2</sub>CO<sub>2</sub><sup>. </sup> can further oxidize NO to NO<sub>2</sub>, providing even more ammunition to make ozone while the sun shines (see nitrogen dioxide and ozone). ~Subramanian, M. S. ; Environmental Chemistry Analysis; Module 3. 3 Organic Air Pollutants; Department of CHemistry; India Institute of Technology, Madras, India`
Industry:Chemistry; Weather
A volume including the lower part of the troposphere (as high as living organisms can fly or be lofted) and the surface of the earth including the oceans. This region, by definition, encompasses all the living matter of the earth. Some very important atmospheric chemicals are produced in this region and pass into the atmosphere. This region exchanges chemicals and particulate matter with the atmosphere and soils and waters of the earth.
Industry:Chemistry; Weather
A volume of air, the component makeup and concentrations of which remain relatively static, that tends to travel around the earth changing geographic location and position above earth as an intact unit. Air parcels can be tracked.
Industry:Chemistry; Weather
A volume outside of the Earth’s atmosphere that is a magnetic field. For the Earth, this field is dipolar, acting like a large bar magnet. This field surrounds Earth like a giant bubble, helping to block the particle- and charge-rich solar wind. It is because of the magnetosphere that auroras are seen at the poles.
Industry:Chemistry; Weather
A warm, dry wind on the lee side of a mountain range that owes its relatively high temperatures largely to adiabatic heating during descent down mountain slopes, a descent that compresses and thereby heats the air (see Lapse Rate). In Zurich, Switzerland this means a warm but clear view of the Alps.
Industry:Chemistry; Weather
A wind forming from the apparent Coriolis and pressure gradient forces along straight isobars above the boundary layer.
Industry:Chemistry; Weather
