Sökning: "cyclicity"

Visar resultat 1 - 5 av 20 avhandlingar innehållade ordet cyclicity.

1. 1. Climate influenced deposition on a low latitude Sheinwoodian carbonate ramp, Gotland, Sweden

   Författare :Mikael Jacobsson; Berggrundsgeologi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Gotland; tempestites; cyclicity; orbital forcing; Sheinwoodian; Silurian; Wenlockian; Sedimentology; Sedimentologi;

   Sammanfattning : The Sheinwoodian succession of Gotland comprises the Högklint, Tofta and Hangvar Formations and most of the Slite Group. The succession consists of hierarchically ordered shallow marine depositional cycles, produced by orbitally forced climate changes. LÄS MER

3. 2. Premenstrual syndrome : a study of change in cyclicity, severity and sexuality

   Författare :Ulla-Britt Ekholm; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

   Sammanfattning : 82 women seeking help for the Premenstrual syndrome (PMS) were successively recruited into a research project on PMS. All of them performed daily self-ratings during one menstrual cycle and 54 of them during two cycles.Including the patients with two rated cycles the change between cycles in cyclicity and preovulatory symptoms was studied. LÄS MER

4. 3. A long-term study of gonadotrophin levels inurine : indications of hormonal background to the cyclic variations of sexual functions in male rabbits and men : possible equivalent to the female sexual cyclicity

   Författare :Hans Arrendal; Uppsala universitet; []
   Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

   Sammanfattning : .... LÄS MER

5. 4. Milankovitch Cycles in Chalks, Danish North Sea, Detected by Use of Magnetic Susceptibility

   Författare :Morten G. Stage; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; magnetic susceptibility; Maastrichtian; Milankovitch cycles; North Sea; chalk;

   Sammanfattning : Subdivision of the Maastrichtian chalk from the Danish North Sea has proven to be difficult because of the homogenous composition and appearance. A high-resolution subdivision of the chalk yields new information and better understanding of the depositional environment along with the possibility of an advantageous correlation. LÄS MER

7. 5. Progesterone profiles, oestrus expression and pregnancy in dairy cows

   Författare :Sofia Nyman; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
   Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

   Sammanfattning : The cow’s ability to reproduce is essential for milk production. Traditionally genetic evaluations for fertility have been based on measures on insemination- and calving dates, which in general are highly influenced by on-farm decisions. Unfortunately, the low heritability of classical fertility traits makes the genetic improvement slow. LÄS MER