Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 27 for “"Fission-fusion"”.
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Fission-Fusion Dynamics in Spider Monkeys in Belize
… have been traditionally described as living in fission-fusion societies, because they range in subgroups of frequently changing size and composition, in contrast with the more typical cohesive societies. In recent years the concept of fission-fusion dynamics has replaced the dichotomous fluid …
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Endoplasmic Reticulum Dynamic Structural Changes in Neurons: The Fission-Fusion Phenomena
… We show that ER in neurons can undergo rapid fission (=fragmentation) and subsequently fusion. This phenomenon was previously unknown in neurons. Our findings show that ER fission is induced during N-methyl D-aspartate (NMDA) receptor-mediated Ca2+ entry to the cell in murine primary cultures …
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A fission-fusion hybrid reactor in steady-state L-mode tokamak configuration with natural uranium
The most prevalent criticism of fission-fusion hybrids is simply that they are too exotic - that they would exacerbate the challenges of both fission and fusion. This is not really true. Intriguingly, hybrids could actually be more viable than stand-alone fusion reactors while mitigating many …
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Mitochondrial Dynamics Imbalance as a Potential Driver of Neuronal Decline in the Aging Nervous System of Lymnaea stagnalis
… in mitochondrial respiration, mitochondrial fission–fusion balance, and metabolic regulation contribute to functional decline in the central nervous system. Using the pond snail Lymnaea stagnalis as an invertebrate model of neuronal aging, the general hypothesis that disruption of …
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Communication and Travel Coordination in Wild Bonobos
… a species of great ape with a highly fluid ‘fission-fusion’ social structure, in which individuals from a single social group regularly divide into smaller subgroups (‘parties’). In Chapters 1 and 2, we investigate the long-distance vocalizations that bonobos use to communicate between …
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Drp1 inhibition is protective against mitochondrial and autophagic impairment induced by alpha-synuclein
… mitochondrial dysfunction through disruption of fission/fusion pathway. Using an inducible cell line, I successfully demonstrated that in a time-dependent manner α-syn overexpression induces mitochondrial fragmentation through disruption of fission/fusion dynamics, collapse of mitochondrial …
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Experimental investigations of cognitive abilities in a socially complex mammal, the spotted hyena (Crocuta crocuta)
… support for the SIH.Spotted hyenas live in fission-fusion societies in which individuals travel, rest, and forage in subgroups that change frequently in size and composition. Numerical imbalances duringintergroup conflicts can be more extreme in these societies when compared to more cohesive …
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Characterization of Association Patterns of Coastal Migratory Bottlenose Dolphins, <i>Tursiops truncatus</i>, in the Nearshore Waters of Virginia Beach, Virginia
… <em>Tursiops truncatus</em>, commonly occur in fission-fusion social systems. For this study, I analyzed photo-identification data from 1994 to 1999 to describe association patterns of bottlenose dolphins in the nearshore waters of Virginia Beach, Virginia. Bottlenose dolphins are present …
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Burn Serum Stimulates Mitochondrial Fission in C2C12 Myoblasts
… designed to investigate changes in mitochondrial fission and fusion in response to a burn serum challenge in myoblasts in vitro. METHODS: Cultured murine myoblasts, C2C12 cells, w ere exposed to 10% rat serum isolated either from 40% total body surface area (TBSA) scald burn rats or control rats. …
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Visitor Effects on Western Lowland Gorillas (Gorilla gorilla gorilla)
… gorillas are on exhibit could help with the fission/fusion patterns of bachelor groups that are not being met in captive environments. Another possibility is using ambient, naturalistic sounds inside of the gorilla habitats to habituate their auditory expectations and, as such, reduce the …
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Life History Parameters and Social Associations of Female Bottlenose Dolphins (Tursiops Truncatus) in North Carolina, USA
… casual acquaintances which are evident in the fission-fusion grouping pattern, and individuals are not highly gregarious. Females appear to associate with most other females in the local area and do not form bands, as defined by researchers in Sarasota, FL (Wells et al. 1987). However, females …
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“Assimulation” in the Land of Ten-Thousand Iranian Communities: Public Assimilation Strategies, Private Preservation Identities
… interactions characterized by an institutional fission-fusion pattern with consequences for ethnic group consciousness and individual identification with and expression of Iranianness. I employ a national and gender identity approach to underscore how Iran’s vacillating political history has …
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Socioecology, Acoustic Communication and Demography of Asian Elephants in Sri Lanka
… of bonds. This study population demonstrates fission-fusion social dynamics in which individuals change companions over short time scales, influenced by rainfall, but maintain stable relationships over long time scales. In the third chapter I test the hypothesis that associations are purely …
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Stress and sociality in a patrilocal primate: Do female spider monkeys tend-and-befriend?
… strategy in a species characterized by fission-fusion social organization and female dispersal. I examine the patterns of female-female social relationships, male aggression, and ecological variables on glucocorticoid concentrations, a measure of physiological stress, among female …
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Polyphosphoinositide-derived signals in the regulation of vacuole membrane fusion and fission
… and so has been used to study both membrane fusion and fission. Fusion is relatively well characterised but fission is not well understood. This work focuses on the molecular events that co-ordinate vacuole fission during hyper-osmotic stress. One polyphosphoinositide pathway was known to …
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Tactical behaviour and decision making in wild chimpanzees
… this thesis is that the added complexity which a fission-fusion social system imposes on a Machiavellian primate requires complex decision-making, and that it is in making these decisions that wild chimpanzees use their cognitive abilities. The extent of social complexity in the relationships …
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Evaluation of the elephant immunocontraception program at Hluhluwe-iMfolozi Park, South Africa
… for darting), but herd size variation due to fission-fusion social dynamics limited the role of collars in improving efficacy. An average 14% of reproductive-age females were missed each year due to failure to locate some collared herds. Despite high annual coverage of females in any one year, …
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Nuclear fusion of Li-6 H-2 crystals
… has become quite proficient in using nuclear fission, as is evidenced in the world's nuclear fleet; however the use of fusion for controlled energy production has not yet developed sufficiently for commercial use. It is, however, a popular anecdote that the production of energy from nuclear …
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Social behavior of the Cuvier’s beaked whale (Ziphius cavirostris) investigated by telemetry and photo-identification
… segregation and instead found a high level of fission-fusion behavior between groups. In addition, I did not find strong evidence for long term stable group formations, although given the large population size and a relatively small sample size infrequent but important bonds among individuals …
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