Sökning: "Torbjörn Lundgren"

Hittade 5 avhandlingar innehållade orden Torbjörn Lundgren.

1. 1. Evaluation of strategies to predict and improve early graft survival in clinical islet transplantation

   Författare :Torbjörn Lundgren; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Islets of Langerhans; clinical islet transplantation; cold storage; outcomes; PET CT; imaging; IBMIR;

   Sammanfattning : Transplantation of the islets of Langerhans as a treatment for type 1 diabetes (T1DM) is a procedure still under development. For the last decade it has been possible to obtain insulin independence by repeated infusions of islets. However, most patients must resume insulin therapy in 2-3 years. LÄS MER

3. 2. Feasible Direction Methods for Constrained Nonlinear Optimization : Suggestions for Improvements

   Författare :Maria Mitradjieva-Daneva; Maud Göthe-Lundgren; Torbjörn Larsson; Clas Rydergren; Anders Forsgren; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; constrained nonlinear optimization; feasible direction methods; conjugate directions; traffic equilibrium problem; sequential linear programming algorithm; stochastic transportation problem; Optimization; systems theory; Optimeringslära; systemteori;

   Sammanfattning : This thesis concerns the development of novel feasible direction type algorithms for constrained nonlinear optimization. The new algorithms are based upon enhancements of the search direction determination and the line search steps. LÄS MER

4. 3. Färger, former, ljus : Svensk reklam och reklampsykologi, 1900-1930

   Författare :Louise Nilsson; Torbjörn Gustafsson-Chorell; Anders Lundgren; Roger Qvarsell; Uppsala universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; modernity; advertising; advertisement; light advertisement; shop window; visual culture; cultural studies; cities; commercial culture; consumers; consumption; advertising campaign; spectator; History of Sciences and Ideas; Idé- och lärdomshistoria;

   Sammanfattning : This dissertation examines the rise of an advertisement business in Sweden and the breakthrough of advertising psychology as a field of knowledge. The aim of the investigation is to show first, how the advertising landscape changed in Sweden and, second, how technologies were used in designing the different forms of advertisement that became integrated into media and public environments, during the period 1900-1930. LÄS MER

5. 4. The Origin-Destination Matrix Estimation Problem : Analysis and Computations

   Författare :Anders Peterson; Jan Lundgren; Torbjörn Larsson; Lars-Göran Mattsson; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Traffic modelling; Travel demand; Origin--Destination matrix; Traffic flow observation; Detector allocation; Estimation.; OD-matris; Trafikflödesobservation; Detektorallokering; Skattning; Trafikmodellering; Reseefterfrågan; Optimization; systems theory; Optimeringslära; systemteori;

   Sammanfattning : For most kind of analyses in the field of traffic planning, there is a need for origin--destination (OD) matrices, which specify the travel demands between the origin and destination nodes in the network. This thesis concerns the OD-matrix estimation problem, that is, the calculation of OD-matrices using observed link flows. LÄS MER

7. 5. Sex and stress steroid modulation of GABA mediated chloride ion flux in rat CNS

   Författare :Jessica Strömberg; Per Lundgren; Torbjörn Bäckström; David Haage; Esa Korpi; Umeå universitet; []
   Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; allopregnanolone; chloride ion uptake; patch-clamp; 3beta-steroids; kinetic parameters; rat brain; Obstetrics and gynaecology; Obstetrik och gynekologi;

   Sammanfattning : Background: Sex and stress steroids are metabolized to 3a-hydroxy-pregnane-steroid metabolites such as allopregnanolone (Allo) and tetrahydrodeoxycorticosterone (THDOC). Allo and THDOC are neuroactive steroids that are metabolized in the brain and act in brain as potent positive GABAA receptor function modulators. LÄS MER