• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 221
  • 33
  • 20
  • 18
  • 11
  • 11
  • 11
  • 11
  • 11
  • 11
  • 9
  • 8
  • 6
  • 4
  • 4
  • Tagged with
  • 400
  • 188
  • 110
  • 99
  • 94
  • 76
  • 72
  • 39
  • 36
  • 35
  • 33
  • 32
  • 32
  • 31
  • 29
  • 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.
1

Gränshandeln i svensk politik under äldre vasatid

Linge, Lars, January 1969 (has links)
Thesis--Lund. / Summary in German. Bibliography: p. 433-443.
2

Comptabilité agricole régionale et évolution du produit brut en Suisse occidentale : 1955-1970 /

Liechti, Daniel. January 1974 (has links)
Thesis (doctoral)--Université de Neuchâtel, 1974. / Includes bibliographical references (p. 181-193).
3

Marketing perishable farm products,

Adams, Arthur B. January 1916 (has links)
Thesis (Ph. D.)--Columbia University. / Vita. Pub. also as Studies in history, economics and public law, ed. by the Faculty of political science of Columbia University. vol. LXXII, no. 3; whole no. 170. Description based on print version record.
4

Economic and legal factors in the marketing of selected agricultural products in Argentina the generation of transactions costs /

Del Fa, Mario Jorge. January 1975 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison. / Typescript (photocopy). eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
5

Problemata quaedam de annona noruegiae incolis leuanda ...

Saebye, Hans Peter, Grøn, Jens Carmann. January 1900 (has links)
Diss.-Copenhagen. / On verso of t.p.: Imprimatur J.C. Kall. "Defendentis spartam ornante nobilissimo et bonis artibus ornatissimo Jano Garmanno Grön ..." Reproduction of original from Kress Library of Business and Economics, Harvard University. Goldsmiths'-Kress no. 9336.100. Includes bibliographical references.
6

Quality as a determinant of vegetable prices a statistical study of quality factors influencing vegetable prices in the Boston wholesale market,

Waugh, Frederick V. January 1929 (has links)
Thesis (Pil. p.)--Columbia University, 1929. / Vita. Published also as Studies in history, economics and public law, edited by the Faculty of political science of Columbia university, no. 312. Bibliography: p. 151-152.
7

An exploratory study on the structural change of fresh produce industry in Hong Kong and its implications on business opportunities /

Wong, Ka-yu, Aileen. January 1997 (has links)
Thesis (M.B.A.)--University of Hong Kong, 1997. / Includes bibliographical references (leaf 93-95).
8

Derived Demand for Freight Transportation: A Case Study of the Long-Run Implications of Structural Changes in the U.S. Grain Supply Chain

Ndembe, Elivs January 2016 (has links)
Video summarizing a Ph.D. dissertation for a non-specialist audience. / Upper Great Plains Transportation Institute (UGPTI) / Transportation and Logistics / Transportation and Logistics / College of Business
9

The potential for air shipment of Arizona horticultural products

Hunter, Herbert Benjamin, 1946- January 1971 (has links)
No description available.
10

Mathematical modeling of airflow, heat and mass transfer during forced convection cooling of produce in ventilated packages

Dehghannya, Jalal. January 2008 (has links)
Forced convection cooling process is the most widely used method of cooling to extend shelf life of horticultural produce after harvest. However, heterogeneous cooling of produce inside different parts of ventilated packages is a serious problem. Therefore, it is essential to design packages that facilitate air circulation throughout the entire package to provide uniform cooling. Selection of appropriate combinations of air temperature and velocity for a given vent design is currently done largely by experimental trial and error approach. A more logical approach in designing new packages, to provide uniform cooling, is to develop mathematical models that would be able to predict package performance without requiring costly experiments. / In this study, mathematical models of simultaneous airflow, heat and mass transfer during forced convection cooling process were developed and validated with experimental data. The study showed that produce cooling is strongly influenced by different ventilated package designs. Generally, cooling uniformity was increased by increasing number of vents from 1 (2.4% vent area) to 5 (12.1% vent area). More uniform produce cooling was obtained at less cooling time when vents were uniformly distributed on package walls with at least 4.8% opening areas. Aerodynamic studies showed that heterogeneity of airflow distribution during the process is strongly influenced by different package vent configurations. The highest cooling heterogeneity index (108%) was recorded at 2.4% vent area whereas lowest heterogeneity index (0%) was detected in a package with 12.1% vent area. / The magnitudes of produce evaporative cooling (EC) and heat generation by respiration (HG) as well as the interactive effects of EC, HG and package vent design on produce cooling time were also investigated. Considerable differences in cooling times were obtained with regard to independent and simultaneous effects of EC and HG in different package vent configurations. Cooling time was increased to about 47% in a package with 1 vent compared to packages with 3 and 5 vents considering simultaneous effects of EC and HG. Therefore, the effects of EC and HG can be influential in designing the forced-air precooling system and consequently, in the accurate determination of cooling time and the corresponding refrigeration load.

Page generated in 0.0517 seconds