Sökning: "lethal"
Visar resultat 16 - 20 av 383 avhandlingar innehållade ordet lethal.
16. The Invasion of the Zebra Mussel - Effects on Phytoplankton Community Structure and Ecosystem Function
Sammanfattning : Biological invasion has become a major threat to economy, ecology, global biodiversity and ecosystem function of aquatic ecosystems. The main aim of the thesis was to study the effects of the zebra mussel (Dreissena polymorpha), a versatile invasive species, on phytoplankton dynamics and ecosystem function of lakes. LÄS MER
17. Developmental changes in the ribosomal protein complement in wild-type and a temperure-sensitive lethal of Drosophila melanogaster as studied by electrophoresis in polyacrylamide Gel
Sammanfattning : .... LÄS MER
18. Predation and shorebirds: predation management, habitat effects and public opinions
Sammanfattning : Many shorebird populations are rapidly declining and a high nest predation rate is one of the threats facing these populations. Thus, factors that affect predation and how to manage it in an effective way are receiving increased attention. LÄS MER
19. The role of psychological stress in cervical and prostate carcinogenesis
Sammanfattning : Psychological stress is common in everyday life, and has been well recognized as one of the major contributors to many mental and physical illnesses, such as mental disorders and cardiovascular diseases. The association between psychological stress and carcinogenesis remains largely inconclusive to date, although possible biological mechanisms, i. LÄS MER
20. Ischemic Tolerance and Cell Signaling in the Rat Brain
Sammanfattning : A brief period of sublethal ischemia in the brain induces resistance to a subsequent, otherwise lethal ischemic insult. This phenomenon is known as ischemic tolerance or preconditioning. A model of ischemic preconditioning in the rat brain using the two-vessel occlusion model of global cerebral ischemia was established. LÄS MER