• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 306
  • 83
  • 27
  • 20
  • 9
  • 8
  • 5
  • 5
  • 5
  • 5
  • 5
  • 5
  • 4
  • 4
  • 4
  • Tagged with
  • 591
  • 437
  • 56
  • 50
  • 47
  • 47
  • 40
  • 33
  • 31
  • 26
  • 26
  • 26
  • 26
  • 24
  • 24
  • 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.
51

Changes in the lipid composition of rainbow trout (Salmo gairdnerii) fed cyclopropenoid fatty acids

Roehm, Jeffrey Noyes 09 February 1968 (has links)
Rainbow trout were fed semi-purified diets containing cyclopropenoid fatty acids, and the biological effects of these acids were investigated. These fatty acids occur naturally in cottonseed oil and have been implicated in a large number of physiological disorders. Included in this study was an investigation of the pattern of deposition of cyclopropenes per se in trout tissue lipids, as well as the effect of these cyclopropenes on the deposition of other fatty acids. Other effects such as growth, liver size and histology were also noted. The ingestion of methyl sterculate, 2-octyl-1-cyclopropene-1- octanoic acid, by rainbow trout resulted in the deposition of intact cyclopropene in the body tissue. The accumulation in both the muscle and depot lipid reached a level approximately equivalent to that in the diet. This cyclopropene existed as the unaltered sterculate in the tissue triglycerides as shown by GLC analysis and was approximately equal to that predicted by the Halphen determination. A method was developed whereby trout liver lipid could be quantitatively analyzed for CPFA using a modified Halphen color reaction. This method was limited, however, by the small amounts of lipid normally available in trout liver. Ingestion of CPFA by rainbow trout resulted in reduction of growth. This effect was characterized by a large growth suppression early in the feeding period followed by a more normal pattern of gain. Dietary levels of 100 ppm and 200 ppm methyl sterculate resulted in identical effects. Livers from trout fed CPFA were typically enlarged and very firm as compared to normal trout livers. They also displayed a marked lack of pigmentation. Histological examination revealed extreme damage due to increased fatty infiltration and deposition. This phenomenon appeared to be most extreme during the early stages of feeding. Dietary cyclopropenoid fatty acids induced certain changes in the pattern of fatty acid deposition in rainbow trout. This alteration was characterized by a rapid increase in the concentration of stearic acid in the tissue, which resulted in a change in the ratio of stearic to oleic acid. A similar but less pronounced effect was also observed with palmitic acid and palmitoleic acid. The liver triglycerides of trout fed CPFA for an extended period also contained less 22:6w3 than normal. When these fish were fed a CPFA-free control diet their liver lipids returned to normal within 30 days. / Graduation date: 1968
52

Some enzyme changes in levers of rainbow trout (Salmo gairdnerii) fed aflatoxin B₁ and sterculic acid

Taylor, Stephen Lloyd 25 September 1969 (has links)
Graduation date: 1970
53

Acute toxicity and carcinogenic activity of ochratoxin in rainbow trout (Salmo gairdneri)

Doster, Robert Charles 14 May 1971 (has links)
Graduation date: 1972
54

Rainbow holograms

Rush, Amy, Art, College of Fine Arts, UNSW January 2007 (has links)
Rainbow holography is the medium I have chosen to specialize in. Holography itself uses light as a sculptural element. In regards to my work, rainbow holography stresses the field of experimentation with the light spectrum until a certain point that I define as travelling the superhighway from reality to virtual worlds. My work appears then as the documentation, in the form of rainbow holograms, of this travel. It depicts narrative imagery while capturing the moments I existed in this virtual world set behind the rainbow. This project aims to present through still, 3D and filmic imagery the co ??? existence of the physical body and its psychological realm. The psychological reality is articulated as a fictional landscape and the rainbow is used as a metaphor for travel between real and virtual worlds. More importantly, I see holography or rainbow holography as a means of crystallising the vision of the unreachable world behind the rainbow. I see my practice as a new way of using this medium by using this rainbow world as subject matter within the rainbow hologram. By experimenting with combined image processing techniques within rainbow holography, such as analogue white light transmission holograms, full colour digital stereograms, and dot matrix holograms, it becomes possible to generate a synthetic new world. Here each pixel can have the potential to be every color of the rainbow spectrum simultaneously, depending on the angle of the eye of the perceiver. It is here that my investigation through holographic representation has led me to explore and create other worldly landscapes and to extend reality. Our longing to travel over the rainbow into our imagination is with us from a very young age. For me this desire has lasted well into adulthood and has somehow found itself at the centre of my creations over the last few years. The childlike and na??ve appearance of my imagery has the ability to evoke the feeling in the viewers of the nostalgia they may have felt as a child, when confronted with the intense experience and wonder of the imaginings of the rainbow. My work trades on a misunderstanding that the medium of holography is taken as a direct representation of an existing reality. My first hologram I???m a rainbow depicts an alter-egotistical projection of myself as a rainbow princess living in a far away fairytale rainbow galaxy, and communicating with earth beings via the technology of the message contained within the hologram. The hologram has often been associated in science fiction with a message to save the planet. This body of work invites viewers to delve into the depths of their imagination, to save this place where I have travelled by believing in it. As in the story of peter pan where the children are asked to clap their hands if they believe in fairies, by others believing in my imagination they are able to save it. The world within the imagination holds no fixed place; it is a shifting and dynamic space. This quality is shared with the rainbow, which is similarly ephemeral, vanishing and appearing within the eye of the beholder according to weather patterns. The rainbow hologram is a fixed rainbow. When replayed through the eyes of the viewer, the interaction with the real rainbow is recalled, and the viewer enters into the imagination to perceive the work. Throughout this paper I have referred to concepts and techniques in other fields such as physics, anthropology, art history and theory. My research is by no means intended as primarily a technical examination of the medium of rainbow holography. The holographic environments I have made rearrange elements from the real world with fictitious realities. They make people feel as if they are viewing a world that is real, but which imitates unreal ideas. These holographic environments enable viewers to experience ideas as a real place. As Rainbow holography is a relatively new medium, and as my own work uses the rainbow as a multi-layered tool I feel it necessary to investigate the appearance of the rainbow in nature and the reaction of humans to the rainbow as a mythical component in ancient cultures. I am interested in investigating how the rainbow has been used a metaphor for travelling from a material world to ???other worlds??? through its presence in various imaging processes through specific art works. The different ways the rainbow has been used have enabled me to more accurately understand my own work as being a nexus between depicting and generating rainbows. Furthermore, in the discussion of the application of rainbow holography I can show that my own work is necessarily different because of the way I am depicting a rainbow to explore undiscovered territory in which I am the author. Finally I look at how holography is perceived by the public, which helps me to explain the way in which my own work is perceived. Deliberately using the idea of an image in its surrounding context has helped to achieve my desired outcome: to make people believe that the world behind the rainbow really does exist and that I have travelled there, and that they too can do so via viewing my work.
55

Pathophysiology of IHN virus disease in rainbow trout.

Amend, Donald F. January 1974 (has links)
Thesis (Ph. D.)--University of Washington. / Bibliography: l. 99-102.
56

Effects of Reduced Water Temperature On Swimming Performance and Predation Vulnerability of Age-0 Flannelmouth Sucker (Catostomus latipinnis).

Ward, David Lance January 2001 (has links) (PDF)
Thesis (M. S. - Renewable Natural Resources)--University of Arizona, 2001. / Page 42 missing from PDF. Includes bibliographical references (leaves 52-56).
57

Function and structure of rainbow trout leukocytes.

Etlinger, Howard Michael. January 1975 (has links)
Thesis (Ph. D.)--University of Washington. / Bibliography: l. 142-158.
58

Dietary L-tryptophan suppresses aggression and stress responsiveness in juvenile rainbow trout (Oncorhynchus mykiss) : the role of brain serotonin and plasma melatonin /

Lepage, Olivier, January 2004 (has links)
Diss. (sammanfattning) Uppsala : Univ., 2004. / Härtill 5 uppsatser.
59

Die französischen namen des regenbogens ...

Merian, Samuel, January 1914 (has links)
Thesis--Basel. / Vita. "Abkürzungen": p. [93]: bibliographical foot-notes.
60

Starvation induced alterations in hepatic lysine metabolism in different families of rainbow trout (Oncorhynchus mykiss)

Higgins, Angela. January 1900 (has links)
Thesis (M.S.)--West Virginia University, 2004. / Title from document title page. Document formatted into pages; contains vii, 93 p. : ill. (some col.). Includes abstract. Includes bibliographical references.

Page generated in 0.029 seconds