Sökning: "A Ohlson"

Visar resultat 1 - 5 av 35 avhandlingar innehållade orden A Ohlson.

1. 1. In vivo studies of cell cycle regulating proteins in rats during liver regeneration and during promotion of liver carcinogenesis

   Författare :Lena Ohlson; Inger Porsvh Hällström; Galina Selivanova; Bertha A. Brodin; Södertörns högskola; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cell cycle; cancer; HCC; p53; Rb; p107; G1-progression; G1 S transition;

   Sammanfattning : There are more than one hundred different types of cancer in humans. However, the major platform for all types of cancer is automous and uncontrolled cell division and though most types of cancer are possible to treat and cure by surgery, chemical therapy or irradiation, more efficient and less toxic therapies are urgently needed. LÄS MER

3. 2. Testing spatial independence using a separable covariance matrix

   Författare :Martin Ohlson; Dietrich von Rosen; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MATHEMATICS; MATEMATIK;

   Sammanfattning : Spatio-temporal processes like multivariate time series and stochastic processes occur in many applications, for example the observations from functional magnetic resonance imaging (fMRl) or positron emission tomography (PET). It is interesting to test independence between k sets of the variables, that is testing spatial independence. LÄS MER

4. 3. Novel sites of A-to-I RNA editing in the mammalian brain

   Författare :Johan Ohlson; Marie Öhman; Robert Reenan; Stockholms universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Molecular biology; Molekylärbiologi; Molecular Biology; molekylärbiologi;

   Sammanfattning : The number of protein-coding genes are likely not sufficient to account for the complexity of higher organisms. It is plausible that the proteome is responsible for the complexity of an organism. LÄS MER

5. 4. Mechanical behaviour of a roller bearing steel : Strength differential effect, low temperature creep and propagation of short cracks

   Författare :Irene Linares Arregui; Bo Alfredsson; Nils-Gunnar Ohlson; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : Fatigue cracks in bearings either initiate from the surface or from an inclusion below the rolling contact surface. Then, short cracks start to propagate. Short crack grow at considerably faster rates than long cracks subjected to a nominally equivalent stress intensity factor range. LÄS MER

7. 5. Impact of Metallic Projectiles on a Ceramic Target Surface : Transition Between Interface Defeat and Penetration

   Författare :René Renström; Bengt Lundberg; Patrik Lundberg; Nils-Gunnar Ohlson; Uppsala universitet; []
   Nyckelord :Engineering physics; Projectile; Cylindrical; Conical; Yield strength; Compressibility; Perfect flow; Self-similar flow; Interface defeat; Dwell; Teknisk fysik; Teknisk fysik med inriktning mot hållfasthetslära; Engineering Science with specialization in Solid Mechanics;

   Sammanfattning : The purpose of this thesis is to gain understanding of the load on flat target surfaces produced by projectile impact. Models are proposed from which upper and lower bounds can be derived for the transition be-tween interface defeat and normal penetration. LÄS MER