• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 1791
  • 1313
  • 209
  • 169
  • 169
  • 169
  • 169
  • 169
  • 169
  • 145
  • 25
  • 23
  • 19
  • 18
  • 10
  • Tagged with
  • 4176
  • 1075
  • 451
  • 437
  • 409
  • 337
  • 318
  • 310
  • 293
  • 271
  • 222
  • 214
  • 212
  • 200
  • 177
  • 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

Etude par IRM à haut champ de l'ischémie cérébrale transitoire chez le rat nouveau né / Study by MRI at high field of the transient cerebral ischemia in newborn rat

Po, Chrystelle 26 February 2009 (has links)
Le but de cette étude était de caractériser par IRM et SRM in vivo le développement à court et moyen terme des atteintes cérébrales consécutives à une ischémie expérimentale transitoire focale chez le rat nouveau né (P7). Les résultats obtenus ont montré que l’IRM à court terme permettait le suivi de l’extension des aires atteintes pendant l’ischémie et la reperfusion et que ce suivi avait un caractère prédictif en ce qui concerne le devenir futur de ces tissus. Le suivi a moyen terme a permis de mettre en évidence le développement d’une cicatrice gliale dans les aires atteintes, par imagerie pondérée T2, et les réorganisations des réseaux de fibres cérébrales, par imagerie du tenseur de diffusion dans cette cicatrice et dans des aires adjacentes homolatérales. Les protocoles d’IRM développés seront donc des outils performants pour l’évaluation de traitements thérapeutiques ayant pour cible ces deux processus. / The aim of this study was to characterize by in vivo MRI and MRS the short term and middle term developments of cerebral injuries following an experimental transient focal ischemia in the newborn rat (P7). The results show the efficiency of MRI to monitor the short term extent of the injured areas during ischemia and reperfusion and to predict the extent of the middle term extent of brain damage. The middle term monitoring has shown the development of a glial scar in the injured areas, by T2 weighted imaging, and the remodeling of the cerebral fiber networks, by Diffusion Tensor Imaging both in the glial scar and in ipsilateral adjacent areas. The monitoring of cerebral ischemia by these imaging methods will be thus a useful tool to evaluate the efficiency of therapeutic treatments directed toward these two processes.
2

The conversion of 1,3-N15-,2-c14-adenine to polynucleotide adenine and guanine in the adult male rat

Tomlinson, Raymond Valentine January 1956 (has links)
1,3-N¹⁵ -,2-C¹⁴ -adenine was synthesized and administered to rats by intraperitoneal injection. The compound was incorporated as both adenine and guanine into the visceral nucleic acids. Comparison of the C¹⁴/N¹⁵ ratios found in the adenine and guanine isolated from the visceral nucleic acids with that in the injected adenine indicated that for both compounds there had been a loss of C¹⁴ . The decrease in the C¹⁴/N¹⁵ ratio of the polynucleotide guanine was much greater than that in the polynucleotide adenine. The inference drawn from this marked difference was that on at least one pathway for the conversion of adenine to guanine the purine nucleus does not remain intact. The labile 2-C¹⁴ was found as C¹⁴ O₂ in the animals' expired air. Evidence that part of the C¹⁴ O₂ resulted from purine interconversion was afforded by examining the allantoin excreted in the animals’ urine. This compound had a C¹⁴/N¹⁵ ratio consistent with the source from which it was derived, the nucleic acid purine. The deficit of C¹⁴ , apparent from the C¹⁴/N¹⁵ ratio, in this excretory product for 47% of the C¹⁴ O₂ expired by the animals. / Medicine, Faculty of / Biochemistry and Molecular Biology, Department of / Graduate
3

Intestinal disturbances of the rat infested with Nippostrongylus muris /

Symons, Lawrence Eric Alexander. January 1900 (has links) (PDF)
Thesis (M.Sc.) --University of Adelaide, Dept. of Zoology, 1960. / Typewritten.
4

The function of the vibrissae in the behavior of the white rat

Vincent, Stella Burnham. January 1900 (has links)
Issued also as thesis, Univ. of Chicago. / "Contributions from the Psychological Laboratory of the University of Chicago." Includes bibliographical references.
5

Copulatory behavior of Rattus rattus

Estep, Daniel Quen, January 1975 (has links)
Thesis--University of Florida. / Description based on print version record. Typescript. Vita. Includes bibliographical references (leaves 112-117).
6

The function of the vibrissae in the behavior of the white rat

Vincent, Stella Burnham. January 1900 (has links)
Issued also as thesis, Univ. of Chicago. / "Contributions from the Psychological Laboratory of the University of Chicago." Includes bibliographical references.
7

Some influences of oestrin on the hypophyseal-gonad complex of the immature female rat The follicular apparatus of the ovary of the immature rat and some of the factors which influence it /

Lane, Charles Edward, January 1935 (has links)
Presented as Thesis (Ph. D.)--University of Wisconsin--Madison, 1935. / Part 1 reprinted from American journal of physiology, vol. 110, no. 3 (Jan. 1935) ; Part 2 reprinted from Anatomical record, vol. 61, no. 2, and Supplement (25 Jan. 1935). eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
8

The inhibition of oestrus and correlated changes in the genital tract of the rat

Meyer, Roland Kenneth. January 1930 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1930. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 32-33).
9

Pyridoxine-magnesium interrelationship and tryptophan metabolism in the white rat

Korbitz, Bernard Carl. January 1962 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1962. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
10

The maintenance of adult rats on diets low in pyridoxine and certain other B vitamins

Miller, Elizabeth Cavert, January 1945 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1945. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 44-46).

Page generated in 0.0765 seconds