Sökning: "LET"

Visar resultat 1 - 5 av 341 avhandlingar innehållade ordet LET.

  1. 1. Live and Let Die : Critical regulation of survival in normal and malignant hematopoietic stem and progenitor cells

    Författare :Pernilla Eliasson; Jan-Ingvar Jönsson; Mikael Sigvardsson; Urban Gullberg; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; hematopoietic stem cells; hypoxia; self-renewal; survival; acute myeloid leukemia; FLT3; Cell and molecular biology; Cell- och molekylärbiologi; Haematology; Hematologi;

    Sammanfattning : The hematopoietic stem cell (HSC) is characterized by its ability to self-renew and produce all mature blood cells throughout the life of an organism. This is tightly regulated to maintain a balance between survival, proliferation, and differentiation. LÄS MER

  3. 2. Let us be philosophers! : Computerized support for ethical decision making

    Författare :Mikael Laaksoharju; Iordanis Kavathatzopoulos; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Datavetenskap med inriktning mot människa-datorinteraktion; Computer Science with specialization in Human-Computer Interaction;

    Sammanfattning : This thesis presents a computerized tool for ethical decision making. For someone who is unfamiliar with the psychological theory that the tool is based on, it will perhaps first appear as a pointless piece of software. LÄS MER

  4. 3. Låt oss skapa människan! : stratifieringsprocesser i Thomas Hobbes' filosofi

    Författare :Niklas Olaison; Cecilia Rosengren; Stockholms universitet; []
    Nyckelord :Thomas Hobbes 1588-1679 ; Jacopo Zabarella 1533-1578 ; Gilles Deleuze 1925-1995 ; materialism; empiricism; nominalism; nomad thought; Classical episteme; stratification; History of Ideas; idéhistoria;

    Sammanfattning : To shed light on a number of paradoxes in Hobbes’s theory, I use a series of concepts culled from the French philosopher Gilles Deleuze (1925-1995). Deleuze distinguishes two different ways of doing philosophy: One is the dominant mode in Western tradition, which Deleuze names "State Philosophy", which emphasises identity and universals and serves to confirm and justify the powers that be. LÄS MER

  5. 4. Averaged linear energy transfer and other beam quality descriptors inr elation to relative biological effectiveness

    Författare :Fredrik Kalholm; Niels Bassler; Iuliana Toma-Dasu; Emanuele Scifoni; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; LET; RBE; LQ-model; medicinsk strålningsfysik; Medical Radiation Physics;

    Sammanfattning : In radiotherapy with protons, a constant relative biological effectiveness (RBE) of 1.1 is traditionally applied, i.e. protons are assumed to be 10\% more effective than photons in killing cells. LÄS MER

  7. 5. Radiotherapy Gel Dosimetry: Development and Application of Normoxic Polymer Gels

    Författare :Helen Gustafsson; Malmö Medicinsk strålningsfysik; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Clinical physics; radiology; tomography; medical instrumentation; Klinisk fysiologi; tomografi; medicinsk instrumentering; Radiofarmaceutisk teknik; Radiopharmaceutical technology; proton; LET; FT Raman spectroscopy; MRI; normoxic gel; IMRT; 3D verification; polymer gel dosimetry; radiologi;

    Sammanfattning : In many radiotherapy applications, true three-dimensional dosimetry with good spatial resolution that can be achieved in a single measurement would be of great value. Polymer gel dosimetry fulfils many of the demands on such a system. In this study, methods to facilitate the implementation of gel dosimetry have been investigated. LÄS MER