Sökning: "rift"

Visar resultat 1 - 5 av 53 avhandlingar innehållade ordet rift.

1. 1. Rift Valley fever : consequences of virus-host interactions

   Författare :Maria Baudin; Magnus Evander; Clas Ahlm; Göran Bucht; Tomas Bergström; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Rift Valley fever; Rift Valley fever virus; viral haemorrhagic fever; miscarriage; entry; charge; carbohydrates; high-throughput screening; antiviral; cell-based assay; medicinsk virologi; Medical Virology;

   Sammanfattning : Rift Valley fever virus (RVFV) is a mosquito-borne virus which has the ability to infect a large variety of animals including humans in Africa and Arabian Peninsula. The abortion rate among these animals are close to 100%, and young animals develop severe disease which often are lethal. LÄS MER

3. 2. Rift Valley fever : development of diagnostics and vaccines

   Författare :Jonas Näslund; Clas Ahlm; Richard Elliott; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Rift Valley Fever; vaccines; diagnostics; MEDICINE; MEDICIN; Microbiology; immunology; infectious diseases; Mikrobiologi; immunologi; infektionssjukdomar; medicinsk virologi; Medical Virology; Infectious Diseases; infektionssjukdomar;

   Sammanfattning : Rift Valley Fever virus (RVFV) causes an infection with severe impact on animal and human health. The disease is endemic throughout almost the entire African continent and large regions of the Arabian Peninsula. During epidemics, high mortality is observed in animals, especially among cattle, goats, and sheep. LÄS MER

4. 3. Rift Valley fever : challenges and new insights for prevention and control using the “One Health” approach

   Författare :Osama Ahmed Hassan Ahmed; Magnus Evander; Clas Ahlm; Joacim Rocklöv; Maria Van Kerkhove; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Rift Valley fever; Sociocultural practices; Community involvement; Ecological factors; Risk map; Early warning system; Surveillance system; International Health Regulations; and One Health approach.; Epidemiology; epidemiologi; folkhälsa; Public health;

   Sammanfattning : Rift Valley fever (RVF) is an emerging viral zoonosis that causes frequent outbreaks in east Africa and on the Arabian Peninsula. The likelihood of RVF global expansion due to climate change and human anthropogenic factors is an important issue. LÄS MER

5. 4. Volcanism at the tip of a propagating rift : the Heimaey volcanic centre, south Iceland

   Författare :Hannes B. Mattsson; Armann Höskuldsson; Alasdair Skelton; Sigurdur Steinthorsson; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Geology; Volcanology; Petrology; Heimaey; Vestmannaeyjar; Propagating rift; Phreatomagmatic; Diatreme; Tumuli; Earth sciences; Geovetenskap;

   Sammanfattning : Primary magmas are generated by 4-6% partial melting near the garnet-spinel stability fields beneath Heimaey (i.e. 80-65 km depth). The magmas fractionate 31% olivine and clinopyroxene en-route to ponding at the base of the crust (and forming a parental Vestmannaeyjar magma). LÄS MER

7. 5. Interaction of Segments along Rifts that Separate Continents and Ridges that Spread Ocean Floors

   Författare :Tatiana Tentler; Christopher Talbot; Olivier Dauteuil; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Earth sciences; extension; oceanic floor; rift; normal fault; segment; interaction; propagation; Geovetenskap; Earth sciences; Geovetenskap;

   Sammanfattning : The face of the Earth is constantly renewed by continental rifts that open and allow ridges to spread oceanic floor. Both types of these linear extensional structures are morphologically and structurally segmented. This thesis aims to provide insights into the interaction of such segments as they propagate and mature. LÄS MER