Sökning: "source isolation"

Visar resultat 16 - 20 av 83 avhandlingar innehållade orden source isolation.

  1. 16. On the origin of polymorphism - consequences of competition and predation in heterogeneous environments

    Författare :Jennie Holmér; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; source-sink dynamics; predation; competition; dispersal; polymorphism; evolution; crypsis; adaptive dynamics;

    Sammanfattning : In this thesis, I have studied when an initially monomorphic population can diverge into two morphs in a heterogeneous environment. Evolution is driven by competition for resources or predation. In Paper I, we studied source-sink dynamics during evolution in an environment with two types of resource of different abundance in two habitats. LÄS MER

  3. 17. Wirelessly Powered Communications: From Signal Optimization to Antenna Design

    Författare :Boules Atef Nessim Mouris; Ragnar Thobaben; Aggelos Bletsas; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wireless power transfer; multi-tone signals; non-linear energy harvester; wirelessly powered sensors; joint source-channel coding; analog mappings; energy scheduling; mutual coupling reduction; electromagnetic bandgap; glide symmetry.; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : Future internet-of-things (IoT) and beyond 5G communication systems are envisioned to offer large-scale wireless connectivity where the different components of life, society and industry are connected in a smart yet sustainable way. The need for continuous battery charging and/or replacement is a bottleneck for sustainability in these systems. LÄS MER

  4. 18. Stem cells in the adult heart - 3D culture, isolation of side population cells and search for a stem cell niche

    Författare :Kristina Vukusic; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Heart; cardiac stem cells; Stem cell niche; Atrioventricular junction; Side population; 3D culture;

    Sammanfattning : Cardiac tissue shows a poor regenerative capacity. From 2003 reports, mostly based on animal models, have showed existence of stem cells also in the heart. Using 14C measurements, a slow but steady turnover of the cardiac cells was shown in humans, around 1%/year. As a source for this regeneration endogenous stem cells have been suggested. LÄS MER

  5. 19. Time-resolved X-ray diffraction and solution scattering studies of Sensory Rhodopsin II in isolation and in complex with its transducer

    Författare :Giorgia Ortolani; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; light-activated membrane protein; microbial Rhodopsins; Sensory rhodopsin II; SRII; SRII:HtrII; transducer; SSX; XSS; time-resolved;

    Sammanfattning : Light is an important source of energy for many living organisms. Many life forms have therefore evolved cellular receptors that are able to sense light and thereby optimise conditions for photosynthesis and pho- totrophy. LÄS MER

  7. 20. Characterization of Shared Resource Contention in Multi-core Systems

    Författare :Jakob Danielsson; Mikael Sjödin; Stefano Di Carlo; Mälardalens högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Computer Science; datavetenskap;

    Sammanfattning : Multi-core computers are infamous for being hard to use in time-critical systems due to execution-time variations as an effect of shared resource contention. In this thesis we study the problem of shared resource contention which occurs when multiple applications executing on different cores do not have exclusive ownership of a shared resource. LÄS MER