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Physics Essay

Soft Lithography - PDMS Molding of Microfluidic Structures and Fabrication of Microelectrodes
We checked the condition of the chrome filament and tungsten boat. We moved the cover lever to ‘SHUT Cr’ position. The gold pills were placed into the tungsten boat. We lowered the lid carefully until it was seated properly onto the seal.
Pages: 5 (1250 words), Essay
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Science of Sustainability
The problem, however, is that this is not truly sustainable. The only things that are truly sustainable are those that are consumed at the same rate as the earth produces them or slightly slower – and things like coal and oil will never fit this description. True, long-term sustainability must come from renewability, while short-term sustainability can come from almost any resource, depending on the time frame.Many things can be done at a variety of levels in order to promote
Pages: 7 (1750 words), Essay
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Submarine Volcano
(Palande, 2011)This debris is either piled-up around the volcanic vent or settles down along the seafloor. (Topinka, 2003) Eventually the piling up emerges above the surface of the ocean in the form of volcanic islands, some of which can be seen in the south Pacific and the north Atlantic oceans.) (Crouse 2012).In the deeper part of the ocean, volcanic activity pretty much resembles the volcanoes on land terms of shape and flows (Topinka, 2003). They are seen to be slightly steeper as the water
Pages: 6 (1500 words), Essay
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Single slit diffraction and interference
“There might be interference between the light wavefronts coming from these two different halves of the slit” (Holbrow et al 2010, p. By considering the slit of width b to be composed of narrower slits, the occurrence of the intensity minima of the Interference or diffraction pattern can be calculated.Serway and Vuille (2006) reiterate that slits cannot be assumed to have negligible widths acting as line sources of light. On the other hand, their non-zero widths form the basis for
Pages: 4 (1000 words), Essay
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SE Asia Basin History project (South China Sea Platform and South China Ocean Basin)
That the basin may have been formed by underlain by continental crust before it was affected by rifting and subsequently overprinted by forearc structural setting after the initiation of subduction. For example, the evolution of the region may have been as a result of a collusion of the Eurasian and Indian plates, the northward drifting of the Australian plate as well as the westward subdution of the Pacific continental plate during the Cenozoic period as shown in figure 1 below.With regard to
Pages: 6 (1500 words), Essay
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Soil and Urbanization
Some section of the soil is also filled with nutrient-void granite to allow drainage. Also, a PVC pipe is placed vertically to the bottom of the soil samples and connected to a vacuum extraction system to ensure good drainage.In order to test the hypotheses interaction, three variables are selected for the study of the soil ecosystem. In this case, two samples of unweathered glacial deposits sand with diverse chemical and physical properties are selected i. medium sand with low calcium and
Pages: 5 (1250 words), Essay
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Sustainable Energy Applications Discuss Solar Energy
1860 and the First World War, when a wide range of techniques were established to generate steam by obtaining sun’s heat so as to run the irrigation pumps and engines (4). In 1954, at Bell Labs in the United States, Solar PV cells were used for generating electricity in space satellites (Timilsina et al.The energy provided by the sun can be directly collected and used to make high temperature steam, i. more than 1000 C, and low temperature steam, i. less than 1000 C (Energy Technology Fact
Pages: 5 (1250 words), Essay
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Structural Properties of Graphene
The atom remains in the 2pz state where it is oriented perpendicularly to the graphite sheet this forming a conduction π-band. The remarkable electric conduction properties of the carbon nanotubes results from the peculiar band structure exhibited by graphene. These include the zero-band-gap semiconductor and the two linearly dispersing bands that contact each other at the corners of the first brillouin zone (Kelly 1981).After successful studies of graphene were conducted using transmission
Pages: 8 (2000 words), Essay
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Short Essay Response
As the Brundtland report summarizes: “Thus today’s environmental challenges arise both from the lack of development and from the unintended consequences of some forms of economic growth” (WCED 354). In urban design, it means converting agricultural areas to manufacturing/commercial/residential/entertainment sites and creating high-rise cities where population is more compact and where resources are swiftly consumed. Furthermore, the free-market philosophy is not without its negative
Pages: 4 (1000 words), Essay
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Sustainability individual written report
Effect on the existence of water shortage issues is the growth of the world’s population in tandem with the changes to precipitation that global climate change have affected. Due to the fact that many previously populated regions of the world have experienced a great degree of desertification, the extent to which the natural environment can continue to provide the ever increasing demands of the native population comes into question (Kishore, 2013). Environmentalists and researchers are in
Pages: 13 (3250 words), Essay
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Solid State Physics
For instance, the polycrystalline thin films that have reduced defect concentration are omnipresent to contemporary engineeringiv. The reduced defect concentration facilitates the processingv. In conjunction with curiosity in scientific practices, many applications trigger intensive research of the procedures involved in the processing of polycrystalline (semi-conductor) thin films. Typical examples of compounds with polycrystalline thin films include copper and aluminum thin films. The thin
Pages: 9 (2250 words), Essay
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Stability of methane clathrate hydrates under pressure: Influence on outgassing processes of methane on Titan
Been molecular simulations and structural analysis conducted and they have indicated that few guest molecules that are responsible for creating very strong hydrogen bonds with the water compound contained in the clathrate hydrate lattice can produce phases that are stable. It has led to a section of scientists considering ammonia as a potential guest molecule for a clathrate. Additionally, research that was conducted earlier coupled with computational studies are of the opinion that in the
Pages: 11 (2750 words), Essay
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Solar car races
The solar car gets its electricity by converting sunlight into electrical energy through photovoltaic cells. The photovoltaic cells are passed into the battery for storage for future use, or directly transmitted to motor to run the vehicle. The micro-controller chip embedded on the vehicle, which is also responsible for controlling the motion of the car smoothly when the pedal is pressed, performs the process. A solar car functions in various ways, such as capturing sunlight and directing
Pages: 7 (1750 words), Essay
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Solar car races
This is because electric motors and other components of solar vehicles are potentially maintenance-free. Increased efficiency in terms of greatly time and cost is enhanced. Due to the lack of a gasoline tank, the cost of fuelling is not bared which also applies to the time spend when re-fuelling conventional vehicles. Solar powered vehicles are constantly absorbing solar energy even while on the move thus there are no gas stops.The use of these vehicles encourages the preservation of natural
Pages: 6 (1500 words), Essay
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