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» Browse Science and Environment Term Papers
Hydroponic Gardening
Number of Words: 4139 / Number of Pages: 16
... use for hydroponic growing methods is that a person can have a garden in small spaces such as an apartment. In addition a good source of natural sunlight is not required because the gardener will provide the plant's light requirements.
This form of growing plants is not only an interesting topic of study, but also a viable method of producing many species of plants in either a small hobbyist garden or a large industrial crop producing system.
Benefits of Hydroponics
There are a large number of benefits to be taken advantage of with the hydroponic method of growing. In general the plants are going ...
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Fusion Energy
Number of Words: 865 / Number of Pages: 4
... fusion reasearch still needs a lot of time, there has been
some progress in discovering how we can use this. The two fusion reactions
that are the most promising both involve the heavier isotopes of hydrogen:
1) deuterium (composed of one proton and one neutron) Deuterium occurs
naturally as a minor constituent in all hydrogen-containing materials--such
as water--in quantities sufficient to meet all the energy needs of
societies for many billions of years.
2) tritium (composed of one proton and two neutrons). Tritium can be
bred from lithium by a neutron-induced reaction in a blanket that could ...
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Awakenings And Tourette
Number of Words: 991 / Number of Pages: 4
... in real life) discovers that certain vegetative patients reacted to outside stimuli, such as a pattern on a floor, a tossed ball, or a television with a maladjusted vertical hold. Finally, Dr. Sayer comes across Leonard as a middle-aged man, some thirty years after he was originally afflicted with the disease. After doing some tests, the doctor comes to realize that there is brain activity and convinces his colleagues that further tests should be considered. He theorizes that a newly developed drug, L-Dopa, developed for the treatment of Parkinson's patients may benefit these patients. He doses Leonard ...
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Ionic Bond
Number of Words: 536 / Number of Pages: 2
... at room temperature, and the precipitate test tubes will be heated until the precipitate is dissolved so that Ksp may be observed and determined at different levels.
In this experiment various solutions of lead nitrate and potassium iodide were mixed at a number of different dilutions. Through the observation of the amount – or lack of precipitate formed in each dilution, the mathematical relationship between the ions in a saturated dilution may be determined. This relationship is known as the solubility product constant, or Ksp, and is defined as follows, “The Ksp for an ionic soli ...
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Arizona Concrete
Number of Words: 1308 / Number of Pages: 5
... one or more forms of calcium
sulfate (gypsum) as an interground addition. Materials used in the manufacture
of portland cement must contain appropriate proportions of calcium oxide, silica,
alumina, and iron oxide components. During manufacture, analyses of all
materials are made frequently to ensure a uniformly high quality cement.
Selected raw materials are crushed, milled, and proportioned in such a
way that the resulting mixture has the desired chemical composition. The raw
materials are generally a mixture of calcareous (calcium oxide) material, such
as limestone, chalk or shells ...
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"How Is Helium Produced?"
Number of Words: 1143 / Number of Pages: 5
... stripping natural gas of its helium, for purchase of the separated helium by
the government, and for its long-term storage. With over 960 million cubic
meters (34.6 billion cubic feet) of helium in government storage and a large
private helium recovery industry, questions arise as to the need for either the
federal helium extraction program or the federally maintained helium stockpile.
In a move which would take the federal government out of the helium business,
Congress passed the Helium Privatization Act (H.R. 873) as part of the Seven-
Year Balanced Budget Reconciliation Act of 1995 (H.R. 2491 ...
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Photosysthesis Experiment
Number of Words: 945 / Number of Pages: 4
... paper chromatography separates pigments. Paper chromatography works since the pigments in plants have different polarities, weights, and sizes. Although, it was hard to make a clear hypothesis as to how the pigments would travel due to my lack of knowledge of such pigments, I believed that the different pigments would indeed be divided. Furthermore that the lightest and most polar pigments would travel the most while the most non-polar and heaviest would be left in the bottom of the paper.
The second experiment in our lab consisted on observing electron transport in chloroplasts. This was done u ...
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Earthquakes 2
Number of Words: 526 / Number of Pages: 2
... caused by faults that are active. An active fault is a fault along which the two sides of the fracture move with respect to each other. An earthquake is caused by the sudden movement of the two sides of the fault.
Faults are divided into three main groups, depending on how they move. There are normal faults which occur in response to pulling or tension. There are thrust faults which are caused as a result of squeezing or compression. The third group is strike-slip faults which are caused as a result of either type of stress.
Some earthquakes tremendously effect the earth. No earthquake is ...
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Metabolic Costs Of Generating Force
Number of Words: 501 / Number of Pages: 2
... is intermediate between that of birds and quadrupeds. These results support the idea that the costs of muscular force production determines the energy cost of running and suggest that bipedal runners use more energy for a given rate of force production because they require a greater volume of muscle to support their body weight.
Key words: locomotion, energetics, bipedal, bird, muscle force.
Introduction
The question of wither more energy is required to run on two or four legs was addressed 100 years ago when Zuntz (1897) performed some of the first measurements of metabolic energy consum ...
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Clouds
Number of Words: 478 / Number of Pages: 2
... form a pattern of a buttermilk sky. The cirrostratus sometimes form tangled webs or thin whitish sheets. A large ring or halo is sometimes seen around the sun or moon when the cirrostratus covers the sky.
The middle layer of range in altitude from 6,500 to 23,000 feet. The altocumulus, altostratus, and nimbostratus are found in the middle division. The altocumulus are more rounded and puffier than the cirrocumulus . When people stare at the altocumulus , they usually see a shape of an animal, usually an elephant. Altostratus cover the sky with a grayish veil through which the sun or moon ...
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