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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
71

Some chemical properties of microwave radiation

Whittaker, Andrew Gavin January 1994 (has links)
No description available.
72

The evolution and preservation of organic matter exposed to heating

Muirhead, David K. January 2011 (has links)
The aim of this study is to attain a better understanding of the fate and preservation of organic matter through the high temperature processes associated with intrusions and atmospheric entry. Three high temperature regimes were investigated: Intrusions emplaced into organic-rich sediments with differing organic matter types; The STONE 6 atmospheric entry experiment using a sample of Devonian carbonaceous laminate; experimental pyrolysis of the Murchison carbonaceous chondrite.  A further study was performed on refining the experimental pyrolysis technique. For the intrusion studies, each case exhibited zones of petroleum generation towards the intrusion contacts, along with a significant increase in structural order.  Raman spectroscopy has been used to locate the position of an effective oil window next to one intrusion example.  The STONE 6 atmospheric entry experiment has returned carbon preserved in a disordered form alongside some evidence of interior protection.  The structural order of the organic matter present in the Murchison carbonaceous chondrite has increased significantly through both increasing temperature and duration.  An estimation of the size of meteorite that would be required to provide safe transit of organic materials is present at the end of this study with a detailed discussion on the complexities of interpreting the structural changes that are observed in disordered organic materials.
73

An analysis of experiments on aerodynamic heating of high-velocity missiles in accelerated flight

Low, Ward Call January 1955 (has links)
Thesis (Ph.D.)--Boston University. / An analysis is given which treats experimental heat-transfer data obtained during flights of three V-2 rockets and two Aerobee rockets. This work was conducted largely at Boston University under Air Force Contracts W28-099-ac-395 and AF 33(615)-382. The instrumentation and rocket-flight phases extended from 1947 to 1952, while the analysis was carried out in the period from 1953 to 1955. A total of nine V-2 rockets were instrumented to some extent for the purposes of this experiment. The missiles for which data have been analyzed were chosen on the basis of best performance on the part of both instrumentation and rocket. Experimental equipment of special design was produced and installed by the Boston University group in the rockets which were launched in the White Sands area in New Mexico. Extensive field trips were required in this connection, both for the experiment on heat0transer and others in which the same group participated at the same time. The general program was one of research in physics of the upper atmosphere. Since the conclusion of the supporting contracts in October of 1954, additional consideration of the experimental results has continued on a private basis. The data obtained during the course of the present experiment were in the form of temperature variations as experienced by heat meters which were placed at selected locations over the body and fin of the rockets. The heat meters were small circular diaphragms of stainless steel which were placed flush with the rocket skin. Each diaphragm had on its central inner surface a pair of resistance thermometers made of nickel wire, with a diameter of 0.002". The thermometers were switched in sequence into a resistance bridge. One thermometer had always a higher resistance than the other, an arrangement which served two purposes. Firstly, the two values of voltage for a given temperature permited unambiguous determination of the direction in which the resistance bridge was unbalanced. Secondly, these two values of voltage were handled independently by our own instrumentation, and by the recording or telemetry devices. When two such different values of voltage were finally translated back into their equivalent temperatures, close agreement of the temperature values lent considerable support to their accuracy. When the two thermometers reported temperatures which were significantly different from each other, restraint was indicated in trusting their accuracy. Fortunately, close agreement of temperatures reported by the dual thermometers was the more usual experience. [TRUNCATED]
74

Microcomputer based heat controller

Akkam, Mazen January 2010 (has links)
Typescript (photocopy). / Digitized by Kansas Correctional Industries
75

Properties of proteins and food products from micronized soybeans

Pg. Metussin, Dk. Rosidah January 1990 (has links)
No description available.
76

Microwave heating of fruit juices : kinetics of enzyme inactivationmicrobial destruction and evaluation of enhanced thermal effects

Tajchakavit, Sasithorn. January 1997 (has links)
No description available.
77

Performance optimization of a multi-slotted waveguide for microwave processing applications

St-Denis, Eric. January 1998 (has links)
No description available.
78

Development of a roof integrated solar air collector

Belusko, Martin January 2005 (has links)
Solar heating systems are a proven technology which can significantly reduce the amount of fossil fuel needed to meet the heating reuqirements of homes. The southern part of Australia represents the region which requires considerable heating and experiences significant levels of sunshine during the winter period. However existing solar heating systems are not a viable technology due to practical, aesthetic and cost factors. A novel concept for a solar heating system has therefore been proposed which attempts to address these factors.
79

Varmt Sköljvatten

Andresson, Jonas, Persson, Emil January 2007 (has links)
<p>In cooperate with Asko Cylinda we have developed a new heat system too short the process</p><p>time and reduce the energy consume in a dishwasher and still have it too be a class AAA.</p><p>The environment and quality is important for the company too still be the number one on</p><p>the market, If they want too keep that position the product developed of new innovations will</p><p>be very important. The systems we have developed are more effective and reduce energy up</p><p>too 25 %. The process time is reduced too less than two hours, from the today two and</p><p>half-hour. The solutions are too heat up the rinse water and the dishwater at the same time,</p><p>with a new heating system and it make are solutions unique and effective. Its good for the</p><p>dish and the environment. This will help the company too still be the number one on the</p><p>market for household appliances.</p>
80

Värmesystemsutveckling

Andersson, Jonas, Persson, Emil January 2007 (has links)
<p>In cooperate with Asko Cylinda we have developed a new heat system too short the process</p><p>time and reduce the energy consume in a dishwasher and still have it too be a class AAA.</p><p>The environment and quality is important for the company too still be the number one on</p><p>the market, If they want too keep that position the product developed of new innovations will</p><p>be very important. The systems we have developed are more effective and reduce energy up</p><p>too 25 %. The process time is reduced too less than two hours, from the today two and</p><p>half-hour. The solutions are too heat up the rinse water and the dishwater at the same time,</p><p>with a new heating system and it make are solutions unique and effective. Its good for the</p><p>dish and the environment. This will help the company too still be the number one on the</p><p>market for household appliances.</p>

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