- المجال: Education
- Number of terms: 13055
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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 ...
The science of the atmosphere and its direct effects upon the earth's surface. Meteorology is especially concerned with how atmospheric conditions effect the weather.
Industry:Chemistry; Weather
This is the area of the Earth comprised of the solid plates of the continental crust, loose rocks and soil.
Industry:Chemistry; Weather
The process of the formation, movement, interaction, and destruction of parts of the earth's crust on a generally large scale. This can be used to explain seismicity, volcanism, and mountain building. In spring 2011, the 9. 0 magnitude earthquake off the coast of Japan (The Great East or Tohoku earthquake) moved the crust 2. 4 meters.
Industry:Chemistry; Weather
The weathering of a glacier by surface melting, or rock weathering by hydraulic erosion.
Industry:Chemistry; Weather
These terms give scientists a way to describe how much of a substance is contained in a sample: parts of analyte per million parts of sample, for instance. In atmospheric chemistry these become volume parts of analyte per volume parts of atmosphere: ppmv, ppbv, etc. At low analyte gas phase concentrations the analyte is assumed to act as an ideal gas. For instance, a 1 ppmv concentration of formaldehyde would represent 1 liter of formaldehyde per every 1,000,000 liters of air; also equivalent to 1 microliter of H<sub>2</sub>CO per 1 L air. In gas phase concentrations these units are also called gas phase mixing ratios. The reason is because they are just that, ratios of analyte volume to sample volume; the volume of the sample doesn't matter.
Industry:Chemistry; Weather
Type of "forestry practice" which involves the permanent removal of forests and their undergrowth so that the land can serve another purpose. This practice has had a profound effect on global environmental problems (air pollution, global warming), soil erosion, desertification, sedimentation of water courses, alteration of climate and hydrological cycles, alteration of the atmospheric oxygen and carbon dioxide balance and has caused many species to become extinct, reducing worldwide biodiversity. A common deforestation practice is to simply burn the forest while clearing the land for a seasonal crop. This also creates a large-scale release of carbon dioxide further compounding the global warming effect. Since most of the available nutrients are contained in the forest biomass the newly cleared land does not support a crop for more than a few seasons before adjacent land must be deforested.
Industry:Chemistry; Weather
Ultraviolet/visible spectrophotometry is used to measure the absorption capabilities of certain compounds with reference to wavelengths of light on the ultraviolet and visible light ranges.
Industry:Chemistry; Weather
Used to determine the amount of a compound in various media such as the air, water or blood. Though there are many gas-phase atmospheric components that are most easily separated by gas chromatography, some of the urban air compounds are best analyzed using HPLC. Examples are the multi-ringed aromatic compounds created in urban environments and condensed on urban particulates. Samples of the desired media (air, water, etc. ) are dissolved in solution and then separated by injecting the solution into mobile phase solution which is separated via interaction with a stationary phase. As the solution passes through the stationary phase, the components are separated based upon different partitioning behaviors between the components in the mobile phase and the stationary phase. This allows each component to be analyzed separately as they pass through the detector.
Industry:Chemistry; Weather
Wind systems occupying most of the tropics, which blow from 30 degrees North and South toward the equator; winds are northeasterly in the Northern Hemisphere and southeasterly in the Southern Hemisphere.
Industry:Chemistry; Weather
