Spelling suggestions: "subject:"delayed"" "subject:"relayed""
171 |
Cooperative Breeding in the Southern Anteater-Chat : Sexual Disparity, Survival and DispersalBarnaby, Jonathan January 2012 (has links)
Group-living sets the scene for complex social behaviours such as cooperative breeding, and exploring the factors that shape group-living is crucial in understanding these behaviours. This thesis explores the ecology of a population of the facultative cooperative breeding southern anteater-chat (Myrmecocichla formicivora), a group-living bird species endemic to southern Africa. It reveals a breeding system based around a breeding pair and up to three auxiliary males. Despite equal numbers of males and females produced as fledglings there was a surplus of adult males, which remained philopatric. Dispersal was strongly female biased. Females dispersed within their first year, they dispersed further than males, and they lost the benefits of the natal site. The sex skew in the population suggested that these factors drive differential mortality, with juvenile females having much lower annual survival than juvenile males. Adult survival was higher, with female survival only slightly lower than male survival. Dispersal distances suggested that males selected the breeding location, nearer to their natal site. There was no evidence of surplus non-breeding females. On the loss of a breeding female there was no replacement until new females entered the population, yet if a breeding male disappeared the female promptly re-paired with a male from another group. There was no indication of birds floating in the population, and if males were orphaned or widowed they joined other groups as unrelated helpers in preference to floating. There was no sign of inter-group or individual aggression among chats, and unrelated helpers were peacefully accepted into groups, suggesting mutual benefits. In fact all birds in a group helped raise offspring of the breeding pair, and groups with more helpers fledged more offspring, which implies that both direct and indirect fitness benefits can be gained through joining a group and helping. There was surprisingly little inheritance of breeding position by auxiliaries, and strikingly low levels of extra-pair paternity. This study suggests that the Southern anteater-chat group structure arises through male philopatry due to a shortage of breeding females, the benefits of remaining on the natal site and helping, and the potentially high costs of living alone.
|
172 |
The validity of a three-part criteria for differentiating between delayed pharyngeal swallow and premature spillage secondary to poor oro-lingual control on videofluoroscopyFlanagan, Liana January 2007 (has links)
Background and Aims The accurate differentiation between a delayed pharyngeal swallow (sensory impairment) and premature spillage secondary to poor oro-lingual control (motor impairment) is essential to effective dysphagia management. However both physiologic abnormalities result in an identical radiographic sign, that of pre-swallow pooling of the bolus in the pharynx. The dysphagia literature does not provide satisfactory guidelines for making this distinction on videofluoroscopy. The purpose of this study was to assess the validity of a three-part rating scale for differentiating between these two impairments. Methods Videofluoroscopy was used to evaluate the swallowing of 29 participants presenting with dysphagia following stroke. Sensory thresholds for these participants were established by electrical stimulation of the anterior faucial pillars. The videofluoroscopic swallowing studies were analysed using the three-part rating scale and results from this were compared to sensory thresholds using Pearson's product moment correlation. Results There was no significant correlation between the three-part criteria and sensory thresholds. Inter-rater reliability for some measures was poor. Conclusions The three-part criteria was not shown to be a valid measure for differentiating between delayed pharyngeal swallow and premature spillage secondary to poor oro-lingual control. Possible explanations for these findings are discussed, including the relevance of faucial pillar sensation to swallowing.
|
173 |
Does cancer originate in utero? : epidemiological evaluation of a hypothesis /Kaijser, Magnus, January 2002 (has links)
Diss. (sammanfattning) Stockholm : Karolinska institutet, 2002. / Härtill 5 uppsatser.
|
174 |
The primary lymphocyte culture in the diagnosis of drug- and metal-induced allergy /Cederbrant, Karin, January 1900 (has links) (PDF)
Diss. (sammanfattning) Linköping : Univ. / Härtill 5 uppsatser.
|
175 |
Altering the fetal programming of the HPA axis and the consequences in the adult auditory system /Hossain, Amzad. January 2006 (has links)
Lic.-avh. (sammanfattning) Stockholm : Karolinska institutet, 2006. / Härtill 2 uppsatser.
|
176 |
Research in the domain of nocturnal home hemodialysis (NHD) long-term clinical outcomes of NHD patients compared to conventional hemodialysis (CHD) patients post renal transplantation /Pauly, Robert P. January 1900 (has links)
Thesis ( M.Sc.). / Written for the Dept. of Epidemiology and Biostatistics. Title from title page of PDF (viewed 2008/05/29). Includes bibliographical references.
|
177 |
The effects of maternal prenatal insults on the BMI growth trajectory of children between the ages of 5-12 yearsGoudie, Anthony. January 2008 (has links) (PDF)
Thesis (Ph.D.)--University of Alabama at Birmingham, 2008. / Title from first page of PDF file (viewed on June 24, 2009). Includes bibliographical references (p. 97-104).
|
178 |
Self-assembled lipopeptide prodrug depot for sustaned [sic] release : design and synthesis of peptide glutamic acid dialkylamides, their self-assembly into tubules, and their stability to proteolytic degradation /Lee, Kyujin C. January 1999 (has links)
Thesis (Ph. D.)--University of Washington, 1999. / Vita. Includes bibliographical references (leaves [95]-100).
|
179 |
Retrospective maternal risks and fetal outcomes in a prison population a research report submitted in partial fulfillment ... /Copes, Joanna D. Hawley, Kathleen B. January 1981 (has links)
Thesis (M.S.)--University of Michigan, 1981.
|
180 |
Retrospective maternal risks and fetal outcomes in a prison population a research report submitted in partial fulfillment ... /Copes, Joanna D. Hawley, Kathleen B. January 1981 (has links)
Thesis (M.S.)--University of Michigan, 1981.
|
Page generated in 0.0213 seconds