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 1766 for “"Invasion"”.
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Alien plant invasion on the Agulhas Plain : a detailed description of invasion patterns
… abundance and distribution in order to determine invasion patterns and set priorities for management within a region. Such a study was adapted for the Agulhas Plain of South Africa in the Cape Floristic Region. Eucalyptus lehmannii was recognised as the top invasive alien species, occupying both …
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Cooperative Invasion Between Tumor Cell Subpopulations
… but to metastases in vital organs. Tumor cell invasion is an early step in the metastatic cascade which can occur collectively by multiple cells cooperatively invading into the surrounding stroma. Primary patient breast tumors and patient-derived breast cancer cells can collectively invade yet …
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Invasion and Proliferation in Malignant Cells
… focus on and the relation to proliferation and invasion in non-melanoma skin cancer and in breast cancer. In a model system of basal cell carcinoma, we observed that tumor cells changed phenotype from a highly proliferative type in the centre of the tumor to an invasive type with low …
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Biogeographical Approaches for Studying Species Invasion
Many of the most notorious biological invasions occur at continent-wide or global scales but studies investigating mechanisms enhancing species invasions are often conducted at small spatial scales. Moreover, the contribution of mechanisms facilitating invasion might also vary across a geographical …
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Multiscale Mathematical Modelling of Cancer Invasion
Invasion of the surrounding tissue is one of the hallmarks of cancer. Solid tumours have a reciprocal relationship with the surrounding microenvironment, a complex tissue composed of extracellular matrix and other multiple distinct cell types. Prote- olytic degradation and remodelling of the …
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TIS21 inhibits cell migration and invasion
… has a critical role in cancer cell migration and invasion. When we overexpressed TIS21 in A549 cells, cell migration and invasion were dramatically inhibited. Furthermore, cell morphology was changed like round shape. TIS21 overexpression was correlated with downregulation of focal adhesion kinase …
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Physical Factors Regulating Human Trophoblast Invasion
… placentation characterised by inadequate invasion of extravillous trophoblast (EVT) cells into the uterine decidua. This invasion is necessary to transform the uterine arteries, ensuring an adequate maternal blood supply into the intervillous space for normal fetal growth and development. …
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Invasion of coastal Acacia communities by Chrysanthemoides
… provided a means of better understanding the invasion process. The main factors in the success of Chrysanthemoides in Australia are flowering mainly from autumn to spring, a yearly output of over 4000 seeds m-2 , efficient dispersal particularly by birds, and low predation. Acacia flowers only …
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Invasion of coastal Acacia communities by Chrysanthemoides
… provided a means of better understanding the invasion process. The main factors in the success of Chrysanthemoides in Australia are flowering mainly from autumn to spring, a yearly output of over 4000 seeds m-2 , efficient dispersal particularly by birds, and low predation. Acacia flowers only …
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Mechanistic aspects of microbial invasion of wood
Work described in this thesis was undertaken to determine the effect of wood on behavioural aspects and growth of fungi and bacteria in pure culture and soil.<br/><br/>It was shown that sapwood blocks of lime (Tilia vulgaris) end pine (Pinus sylvestris) strongly influenced hyphal extension patterns …
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Effector-driven actin reorganisation restricts Salmonella invasion.
… of those proteins for limiting bacterial invasion. The C-terminal VCA domain of N-WASP is revealed as the key region for the formation of the invasion-limiting actin networks. Those SopE2- and N-WASP-generated actin structures also obstruct the translocation of effectors from the invading …
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Breast cancer cells cooperate during invasion and metastasis
… recent studies demonstrated that collective invasion can be cooperative, where leader cells enable the invasion of otherwise non-invasive follower cells, the mechanisms regulating their cooperativity have been poorly investigated. Additionally, it is not known whether cooperative invasion can …
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Integrin-vermittelte Invasion von Staphylococcus aureus in Säugerzellen
… Untersuchung der Signaltransduktion bei der Invasion von S. aureus war die kritische Rolle von Tyrosinkinasen für die Integrin-vermittelte Invasion ein erster wichtiger Hinweis. Diese Befunde führten zu weiteren spezifischeren Untersuchungen, wobei eine wichtige Rolle für Kinasen der Src …
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Carbon sequestration and weedy invasion in CRP fields
1 PDF file (viii, 75 pages)
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Body Invasion: Cancer Survivorship and Quality of Life
<p>There is a lack of awareness about the experience effacing illness as a young adult. Disconnection exists between treating the body and attending to the emotional state of dealing with a health problem. The experience of a cancer diagnosis a. a young age is life changing. Physical and …
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Towards bioengineered ecosystems: Three studies in invasion biology
… is their invasibility, i.e. their resistance to invasion by nonnative organisms. Invasion is a driver of change at scales as small as a bioreactor and as large as the scale of biogeography. Invasion can be either a desired outcome, for example in the use of probiotics to replace healthful gut …
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Effects of fragmentation and invasion on ant communities
… colonize habitats that are more susceptible to invasion, including simplified or species-poor communities, fragmented or edge habitats, and habitats with new niche opportunities generated by disturbance. To conserve biodiversity and minimize the negative consequences of habitat loss and …
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Role of Retinol in Colon Cancer Invasion and Metastasis
No abstract prepared.
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Exotic Species Invasion and Biodiversity in Bangladesh Forest Ecosystems
Both, biological invasion by exotic plant species and biodiversity including spatial patterns and drivers are two major issues in tropical forest ecosystems. This dissertation deals with these two issues in a tropical forest ecosystem in Bangladesh. Considering the first issue, it comprises two …
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