Sökning: "klocka"

Visar resultat 1 - 5 av 15 avhandlingar innehållade ordet klocka.

1. 1. The circadian clock in annuals and perennials : coordination of Growth with Environmental Rhythms

   Författare :Mikael Johansson; Maria E. Eriksson; Paul Devlin; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; circadian clock; arabidopsis; populus; Molecular biology; Molekylärbiologi; Plant biotechnology; Växtbioteknik; Plant physiology; Växtfysiologi; molekylärbiologi; Molecular Biology;

   Sammanfattning : Since the first signs of life on planet earth, organisms have had to adapt to the daily changes between light and dark, and high and low temperatures. This has led to the evolution of an endogenous time keeper, known as the circadian clock. LÄS MER

3. 2. Kronopolis : Tid, makt och medialisering i Malmö

   Författare :Fredrik Edin; Henrik Örnebring; Linda Ryan Bengtsson; Eva Kingsepp; Staffan Ericson; Karlstads universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Mediatization; ethnography; power-chronography; speculative rhythms; temporal power relations; Medialisering; etnografi; maktkronografi; spekulativa rytmer; tids-liga maktrelationer.; Media and Communication Studies; Medie- och kommunikationsvetenskap;

   Sammanfattning : Syftet med den här etnografin är att undersöka hur medialiseringen påverkar stadslivet i Malmö, särskilt ur ett tidsligt perspektiv. Föremål för studien är de tidsliga maktrelationer och linjära rytmer – som arbete och konsumtion – som medialiseringen ger upphov till i det urbana rummet. LÄS MER

4. 3. Tree-limit ecotonal response to Holocene climate change in the Scandes Mountains of west-central Sweden

   Författare :Jonas Bergman; Kvartärgeologi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; tree-limit ecotone; alpine vegetation; tephrochronology; peat humification; plant macrofossils; Palaeobotany; fylogeni; Paleobotanik; palynology; phylogeny; palynologi; Geologi; Geology; pedology; geomorphology; Physical geography; klimatologi; geomorfologi; climatology; Fysisk geografi; cartography; Holocene climate; palaeoecology; marklära; kartografi; pollen influx;

   Sammanfattning : The aim of this thesis was to reconstruct the Holocene vegetational and climatic development in the Sylarna-Storulvån area, western Jämtland, in the central Scandes Mountains. Temporal trends and fluctuations in the elevation and vegetational character of the tree-limit ecotone were studied mainly by means of pollen and plant macrofossil analysis of two lake sediment sequences (Lakes Stentjärn and Spåime), located above the present-day tree-limit. LÄS MER

5. 4. Reconciling gene family evolution and species evolution

   Författare :Joel Sjöstrand; Jens Lagergren; Nicolas Lartillot; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Computational biology; Bioinformatics; Phylogenetics; Phylogenomics; Comparative genomics; Evolutionary biology; datalogi; Computer Science;

   Sammanfattning : Species evolution can often be adequately described with a phylogenetic tree. Interestingly, this is the case also for the evolution of homologous genes; a gene in an ancestral species may – through gene duplication, gene loss, lateral gene transfer (LGT), and speciation events – give rise to a gene family distributed across contemporaneous species. LÄS MER

7. 5. On gene regulatory networks and data fitting

   Författare :Karl Fogelmark; Beräkningsbiologi och biologisk fysik - Genomgår omorganisation; []
   Nyckelord :Circadian rhythms; gene regulation; transcription networks; correlated data; Circadian rhythms; gene regulation; transcription networks; correlated data; Fysicumarkivet A:2016:Fogelmark;

   Sammanfattning : Living organisms can be viewed as complex biological machines. In order to function, they must regulate their internal mechanism to do the right thing, at the right time, and in the right amount. Part of this regulation is encoded in gene regulatory networks. LÄS MER