• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 55
  • 11
  • 11
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 1
  • Tagged with
  • 87
  • 87
  • 87
  • 17
  • 15
  • 12
  • 12
  • 9
  • 9
  • 8
  • 8
  • 8
  • 8
  • 8
  • 7
  • 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.
41

Numerical simulation of a direct injection spark ignition engine using ethanol as fuel

Srivastava, Shalabh. January 2008 (has links)
Thesis (M.S.)--Michigan State University. Dept. of Mechanical Engineering, 2008. / Title from PDF t.p. (viewed on July 27, 2009) Includes bibliographical references (p. 119-122). Also issued in print.
42

Primary power for the Philippines I. Effect of variable compression ratio on the performance of tractor engine using alcohol. II. A comparative study of alcohol, gasoline, and kerosene as fuels for tractor engines /

Teodoro, Anastasio Lalota, January 1900 (has links)
Thesis (Ph. D.)--Cornell University, 1928. / The first article is from the University of the Philippines Natural and applied science bulletin, v. 1, no. 3, July, 1931 and the second ("Experiment station contribution no. 742") from the Philippine agriculturist, v. 20.
43

Improving sorghum bioconversion rate for ethanol and lactic acid production /

Zhan, Xiaobei. January 2004 (has links)
Thesis (Ph. D.)--Kansas State University, 2004. / Includes bibliographical references.
44

Conversion of hardwoods to ethanol design and economics of delignification and enzyme recycling /

Paruchuri, Divya. January 2008 (has links)
Thesis (M. S.)--Chemical Engineering, Georgia Institute of Technology, 2009. / Committee Chair: Muzzy, John; Committee Member: Frederick, Jim; Committee Member: Realff, Matthew. Part of the SMARTech Electronic Thesis and Dissertation Collection.
45

Economic evaluation of U.S. ethanol production from ligno-cellulosic feedstocks /

Choi, Youn-Sang, January 1998 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 1998. / Typescript. Vita. Includes bibliographical references (leaves 128-133). Also available on the Internet.
46

Economic evaluation of U.S. ethanol production from ligno-cellulosic feedstocks

Choi, Youn-Sang, January 1998 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 1998. / Typescript. Vita. Includes bibliographical references (leaves 128-133). Also available on the Internet.
47

The effect of compression ratio on emissions from an alcohol-fueled engine /

Cambridge, Shevonn Nathaniel, January 1992 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1992. / Vita. Abstract. Includes bibliographical references (leaves 81-83). Also available via the Internet.
48

A study of petrol and diesel fuel blends with special reference to their thermodynamic propeties and phase equilibria

Hayward, Caroline January 1986 (has links)
The ternary phase behaviour of the n-heptane-l-propanol-water system was studied and compared with the theoretical prediction based on the UNIQUAC model for non-electrolyte solutions. The results showed that this model adequately approximated experimental studies. The excess enthalpies and excess volumes for several binary mixtures were determined. The excess enthalpies were measured using a LKB flow microcalorimeter and the excess -volumes determined using a PAAR densitometer. The study showed that no significant enthalpy or volume changes occurred when petrol/n-heptane were mixed with alcohols . Ternary phase diagrams, including tie lines have been determined for a number of petrol-alcohol-water systems (including the Sasol blend of alcohols). The tie line results show that the concentration of water in the water-rich layer is strongly dependent on the type of alcohol used. The Sasol alcohol blended with petrol resulted in a high water concentration in the water-rich layer which forms on phase separation. This is believed to contribute significantly to the corrosion problems experienced by motorists using the Sasol blended fuel on the Witwatersrand. The effect of temperature on several of these blends was included in the study. Diesel-alcohol blends and the co-solvent properties of ethyl acetate investigated. Ethyl acetate ensures miscibility at low concentrations for diesel-ethanol blends. Octyl nitrate and two cetane improvers from AECI were assessed in terms of their ability to restore cetane rating of blended diesel fuel to that of pure diesel fuel. The results indicated that all three samples were successful in this application. / KMBT_363
49

Optimization of sweet sorghum processing parameters

Weitzel, T. Timothy January 1987 (has links)
Production of fuel ethanol from renewable biomass sources has gained popularity in recent years. Sweet sorghum is one of the crops identified as an efficient producer of the sugars needed for ethanol production. The juice in the sweet sorghum pith contains the greatest proportion of nonstructural carbohydrates, the presumed fermentable material. Sugar cane milling procedures have previously been used to extract the juices from the sweet sorghum plant material. The research reported herein relates to a new method of juice extraction expected to provide higher juice expression efficiencies than previous methods. The sweet sorghum stalks are chopped and the sugar-laden pith fraction is separated from the fibrous rind-leaf. The pith portion only is then fed through a screw press for juice extraction. Several chopping and separating parameters were evaluated. A statistical linear regression analysis was employed to evaluate the effects of feed rate, cutting interval, chopper knife speed, and percent of whole stalk mass segregated into the pith category on juice yield. The analysis revealed that the pith category had the most significant positive effect on juice yield calculated as a percent of whole stalk mass. The highest pith categories provided optimization of juice expression. Feed rate has a negative effect on juice yield, meaning that slower feed rates were better, but this was the least significant parameter. The chopping interval had a positive effect, meaning that the largest value used in the analysis provided for optimum juice yield. The cutting speed parameter has no effect on juice yield. / Master of Science
50

Fermentative production of butanol from sorghum molasses

Hong, Bumshik January 2011 (has links)
Typescript (photocopy). / Digitized by Kansas Correctional Industries

Page generated in 0.0524 seconds