• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 546
  • 138
  • 119
  • 56
  • 51
  • 40
  • 15
  • 11
  • 8
  • 6
  • 5
  • 5
  • 5
  • 5
  • 4
  • Tagged with
  • 1155
  • 374
  • 256
  • 238
  • 191
  • 174
  • 158
  • 155
  • 148
  • 141
  • 109
  • 104
  • 100
  • 89
  • 86
  • 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

Sand transport by shoaling waves

Cook, David Olney. January 1969 (has links)
Thesis (Ph. D.) University of Southern California, 1969.
42

Algorithm for computation of the acoustic plane-wave reflection coefficient of the ocean bottom

Martinez, David Richard. January 1980 (has links)
Thesis (M.S.)--Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1979. / Contract no.: N00014-77-C-096; NR 083-004. Includes bibliographical references (p. 132-133).
43

Benthic habitats of the extended Faial Island Shelf and their relationship to geologic, oceanographic and infralittoral biologic features /

Tempera, Fernando. January 2008 (has links)
Thesis (Ph.D.) - University of St Andrews, January 2009.
44

Algorithm for computation of the acoustic plane-wave reflection coefficient of the ocean bottom /

Martinez, David Richard. January 1980 (has links)
Thesis (M.S.)--Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1979. / Contract no.: N00014-77-C-096; NR 083-004. Includes bibliographical references (p. 132-133).
45

Mechanism of heat transport through the floor of the equatorial Pacific Ocean /

Crowe, John, Von Herzen, Richard P. Green, Kenneth E. Silva, Armand J. McDuff, Russell E. January 1980 (has links)
Thesis (Ph. D.)--Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1981. / Ch. 2 written by John Crowe, Richard P. Von Herzen and Kenneth E. Green; ch. 3 written by John Crowe and Armand J. Silva; ch. 4 written by John Crowe and Russell E. McDuff. Vita. Grant no.: OCE 79-02792. Includes bibliographical references.
46

Numerical modeling of induced diffuse flow in seafloor hydrothermal system

Gosnell, Sawyer Ross. January 2006 (has links)
Thesis (M. S.)--Earth and Atmospheric Sciences, Georgia Institute of Technology, 2007. / Lowell, Robert, Committee Chair ; Long, Tim, Committee Member ; Newman, Andrew, Committee Member.
47

¿Compartamos? exploring the feasibility of a double bottom line in microfinance

Stewart, Amy Elizabeth 04 1900 (has links)
Boston University. University Professors Program Senior theses. / PLEASE NOTE: Boston University Libraries did not receive an Authorization To Manage form for this thesis. It is therefore not openly accessible, though it may be available by request. If you are the author or principal advisor of this work and would like to request open access for it, please contact us at open-help@bu.edu. Thank you. / 2031-01-02
48

Analýza struktury CSR aktivit u firem působících na českém trhu / Analysis of structure CSR activities of companies operating on the Czech market

Smolková, Marie January 2010 (has links)
The master thesis presents concept of CSR (Corporate Social Responsibility) and examines the CSR activities of companies operating on the Czech market. The aim of the thesis is to analyses the engagement of companies operating on the Czech market into the concept CSR and find out possibilities of further development by non-profit-organizations. The thesis focuses on social bottom.
49

Numerical Modeling of Inclined Dense Jets in Stagnant Water on a Sloped Bottom

Wang, Xinyun 11 December 2020 (has links)
Desalination plants are becoming essential due to the limited water resources in order to reduce the pressure of high demand of freshwater in many countries in recent decades. A concerning problem associated with desalination plants is the high concentration brine which has high risk to marine environments. Inclined dense jets are commonly used to treat brine produced by desalination plants or in industrial outfall discharges. They are produced when the brine is discharged at an upwardly inclined angle through a pipe or a diffuser system. Previous studies have mainly focused on jets on a horizontal bottom. In the present study, the influence of sloped bottom is investigated by numerical simulations using a modified solver in OpenFOAM (pisoFoam). Four different Reynolds Averaged Navier Stokes (RANS) turbulence models (Realizable k-ε, Standard k-ε, RNG k-ε and Nonlinear k-ε were employed to assess the accuracy of the selected turbulence models in predicting the jet behavior. Jets of inclination angle of 30° with four different initial conditions (Froude number=15, 20, 25, 30) on three different bed slope angles (2°, 5°, 10°) in stagnant water were conducted. Although inclined dense jets of the discharge angel of 60° are more common in discharge systems, sometimes they cannot be used in shallow waters in order to prevent surface pollution. In such cases, a relatively small jet inclining angle can be used to prevent the surface pollution and as shown in this thesis, bed slope can enhance the brine mixing and dilution. The results showed that Realizable k-ε model is more accurate among the turbulence models studied herein. The dilution at the impact point can be estimated based on the Froude number and initial conditions. After the impact point, the slope did enhance the dilution of the plume compared to the horizontal bed. The dilution was thus affected by the slope and the dilution after the impact point on the slope appeared to be linearly related to the distance to the source. Besides, the slope could enhance the jet dilution up to 20% compared with the horizontal bed after the impact point.
50

The Storage of Organic Matter in Bottom Deposits of Lake Dallas

Williams, Cyrus Paul 08 1900 (has links)
The purpose of this investigation is to find which season of the year organic matter increases most in the bottom deposits of Lake Dallas, the reason for the increase, and the amount of organic matter increase from year to year. It is hoped that this study will be beneficial in understanding the conditions in artificial reservoirs.

Page generated in 0.0345 seconds