- 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 ...
CO<sub>2</sub>, a volatile compound consisting of one carbon and two oxygens. It is a reactant in photosynthesis and necessary for plant life, and is abundant in the atmosphere due to anthropogenic and natural activities. It is a greenhouse gas. The atmospheric concentration of carbon dioxide has been rising from a preindustrial value (<AD1800) of about 280 ppmv to a May 2011 level of about 394 ppmv. This is an increase of over 40%. C. David Keeling was instrumental in establishing the first, high precision, continuous measurements of atmospheric carbon dioxide. The continuous, upward sloping plot of atmospheric CO<sub>2</sub> concentration versus times is eponymously known as the Keeling curve. Ice core data from the European Project for Ice Coring in Antarctica show that present atmospheric concentrations of CO<sub>2</sub> and CH<sub>4</sub> are the highest in the past 800,000 years as determined in the so-called Dome C ice core.
Industry:Chemistry; Weather
Commonly called P-cymene, a component formed by the oxidation of naturally produced terpenes, such as alpha-pinene, released by various trees such as the California Black Sage as well as Eucalyptus foliage. Anthropogenic emissions of this compound are from the production of p-cresol and other organic solvent compounds as well by being its use in the flavor and fragrance industries. Exposure to this compound for the general public is usually from oral consumption of vapor inhalation from food sources that contain it as a natural component.
Industry:Chemistry; Weather
Commonly referred to as acrolein, this compound is found from several sources such as hydrocarbon burning, emission from fuels, and tobacco smoke; it is also a secondary pollutant in the atmosphere from reactions with 1,3-butadiene.
Industry:Chemistry; Weather
Condensed water vapor floating in air. They can take many different shapes due to wind patterns and moisture content. They play an important part in the world's weather because of the water they bring and because of their radiative properties vis a vis global warming.
Industry:Chemistry; Weather
Condensed water vapor that is so small that it can only be seen through a microscope. CCN are actually the center of the droplet. Many of these nuclei are tiny salt particles, sulfate or nitrate aerosol, or small particles present in smoke. See dimethyl sulfide. Most droplets measure from 1/2,500 to 1/250 inch (0. 01 to 0. 1 millimeter) in diameter.
Industry:Chemistry; Weather
Considered a volatile organic compound (VOC) which contributes to photochemical smog in the presence with other VOCs. In the Clean Air Act Amendments of 1990 methyl isobutyl ketone was added to the list of hazardous air pollutants because it is created in urban settings by photochemical reactions. This compound is a colorless flammable liquid, primarily used as a solvent for protective surface coating such as for acrylic enamels and lacquers. It is also used in solvent extractions in the dry-cleaning industry and is regulated by the occupational safety and health administration since exposure can experience nausea, burning eyes, weakness, headaches, and more significantly, damage to the liver and the kidneys.
Industry:Chemistry; Weather
Considered a volatile organic compound (VOC) which contributes to photochemical smog in the presence with other VOCs. In the Clean Air Act Amendments of 1990 methyl isobutyl ketone was added to the list of hazardous air pollutants because it is created in urban settings by photochemical reactions. This compound is a colorless flammable liquid, primarily used as a solvent for protective surface coating such as for acrylic enamels and lacquers. It is also used in solvent extractions in the dry-cleaning industry and is regulated by the occupational safety and health administration since exposure can experience nausea, burning eyes, weakness, headaches, and more significantly, damage to the liver and the kidneys.
Industry:Chemistry; Weather
Constant pressure along a surface. Imagine a column of air from the Earth's surface to the top of the atmosphere. Each point along the atmosphere's altitude containing the same pressure is an isobaric layer, a layer of the atmosphere's gases at constant pressure.
Industry:Chemistry; Weather
COS, a gas that is very stable and unreactive in the troposphere, but, it is thought, photolyzes to form carbon monoxide, CO, and sulfur, S, in the stratosphere. Through stratospheric chemical reactions, the sulfur atoms are converted to SO<sub>2</sub> and H<sub>2</sub>SO<sub>4</sub> which form sulfate aerosol and cloud condensation nuclei, but eventually settle into the troposphere and react to form sulfuric acid, a component of acid rain. Volcanic eruptions contribute some of this COS to the atmosphere. The major biospheric sources of COS are thought to be biological.
Industry:Chemistry; Weather
CS<sub>2</sub>, a compound used to manufacture products such as rayon and cellophane. Carbon disulfide is produced naturally by microbial activity in marshes and in volcanic ash. Since carbon disulfide does not adhere well to sediments, if it comes into contact with soil, it could percolate into groundwater, where it is very soluble. CS<sub>2</sub> can also add to photochemical smog development when it reacts with other organic substances in the atmosphere, such as methane or oxides of nitrogen.
Industry:Chemistry; Weather
