Search for dissertations about: "Jan Öberg"

Showing result 1 - 5 of 8 swedish dissertations containing the words Jan Öberg.

  2. 1. Essays on Capital Income Taxation in the Corporate and Housing Sectors

    Author : Ann Öberg; Jan Södersten; Matz Dahlberg; Seppo Kari; Uppsala universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Economics; Nationalekonomi; Economics; Nationalekonomi; nationalekonomi; Economics;

    Abstract : This thesis consists of an introduction and four self-contained chapters.Chapter I gives a brief introduction to the topic of the thesis and summarizes the main results. Chapter II reports an extensive set of calculations of effective marginal tax rates (EMTR) covering the tax legislation in force in Sweden in 1985, 1991 and 1999. READ MORE

  4. 2. Diatoms in Lake Duluti : Tracking Environmental Variability in Northern Tanzania during the Past 1000 Years

    Author : Helena Öberg; Lars-Ove Westerberg; Karin Holmgren; Jan Risberg; Robert Marchant; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Paleolimnology; Tanzania; Diatoms; Climate change; Crater lake; Physical Geography; naturgeografi;

    Abstract : The tropics are the regions which are least understood climatically and new data on past climate variability is necessary for reliable future modeling of climate change. This thesis contributes with new paleoenvironmental information from a small crater lake in northern Tanzania and provides an additional link between the integrated history of climate, environment and socioeconomic variability in tropical Africa. READ MORE

  5. 3. Efficient Flooding Protocols and Energy Models for Wireless Sensor Networks

    Author : Lasse Öberg; Youzhi Xu; Jan Nilsson; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wireless Sensor Networks; Electronics; Elektronik;

    Abstract : Wireless sensor networks are emerging from the mobile ad hoc network concept and as such they share many similarities. However, it is not the similarities that differentiates sensor networks from their ad hoc counterparts, it is the differences. One of the most important difference is that they should operate unattended for long periods of time. READ MORE

  6. 4. Bone Healing after implantation of bone substitute materials. Experimental studies in estrogen deficiency

    Author : Sven Öberg; Jan Rosenquist; Ulf Lekholm; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Surgery; Bone grafts; hydroxyapatite; estrogen deficiency; demineralised bone; bone formation; AAA bone; bone defect; titanium implants; resonance frequency analysis.; Kirurgi; Surgery; Kirurgi; kirurgi; Surgery;

    Abstract : Bone formation and bone healing were studied in the mandible, tibia and skull bones in adult, healthy and estrogen deficient rabbits implanted with different bone substitutes.In the first study an evaluation of the differences in bone regeneration in and around solid (Alveograf *) and porous hydroxyapatite (Interpore 200*) was undertaken. READ MORE

  7. 5. Signal Transduction in Malignant Cells – Transformation, Activation and Differentiation

    Author : Karin Kårehed; Fredrik Öberg; Jan-Ingvar Jönsson; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Molecular medicine; transformation; PDGF; PI3K; Rho-GTPase; U-937; FcγRI; macrophage; Stat1; PKR; NFκB; ATRA; differentiation; Molekylärmedicin; Molecular medicine genetics and pathology ; Molekylär medicin genetik och patologi ; Pathology; Patologi;

    Abstract : All aspects of cell life are regulated by signal transduction mechanisms. This thesis describes the regulatory roles of a few key signal transduction molecules involved in three major biological responses. READ MORE