Sökning: "Transmitted reference"

Visar resultat 1 - 5 av 40 avhandlingar innehållade orden Transmitted reference.

1. 1. On Modulation and Detection Schemes for Low-Complexity Impulse Radio UWB Communications

   Författare :Muhammad Gufran Khan; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; UWB; RAKE; Transmitted reference; Energy detection; Channel measurements; BPPM;

   Sammanfattning : Due to wealth of advantages offered by short range ultra wideband (UWB) technology, such as capacity improvement, fading reduction and localization, it has gathered a considerable attention. Distinct UWB qualities also pose many system design challenges like difficulties in using digital processing, complex channel estimation and different propagation characteristics. LÄS MER

3. 2. Neonatal cholestasis : clinical and aetiological aspects, with special reference to viral infections transmitted from mother to infant

   Författare :Björn Fischler; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :neonatal cholestasis; biliary atresia; progressive familial intrahepatic cholestasis; vertical transmission; CMV; HCV; GBV-C HGV;

   Sammanfattning : Although the list of possible causes for neonatal cholestasis is long, in many cases the aetiology remains unknown. The aim of this thesis was to examine the pathogenetic role of viral infections in the early infantile cholestasis. LÄS MER

4. 3. Effects of Biomechanical Stress on Gene Regulation in Vascular Cells

   Författare :Maria Carlström; Göteborgs universitet; []
   Nyckelord :shear stress; intraluminal pressure; endothelium; gene expression; DNA microarray; real-time RT-PCR; reference genes; smooth muscle cells; P2 receptors; TNF-alpha; urokinase-type plasminogen activator;

   Sammanfattning : The vascular vessel wall is constantly exposed to biomechanical forces, such as shear and tensile stress. Biomechanical forces are important for several physiological and pathological processes and have been shown to regulate a number of fundamental vascular functions, such as vascular tone and remodeling processes. LÄS MER

5. 4. Diagnostic evaluation of fetal death with special reference to intrauterine infections

   Författare :Karin Petersson; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Fetal death; stillbirth; investigational protocol; congenital toxoplasmosis; parvovirus B19; Internet; INFPREG;

   Sammanfattning : The incidence of intrauterine fetal death (>=28 gestational weeks) is approximately 4/1000 births in Sweden. In order to arrive at a potential cause of death, a number of investigations have been recommended in the diagnostic evaluation of intrauterine fetal death (IUFD). LÄS MER

7. 5. Maternal outcome of pregnancy in Mozambique with special reference to abortion-related morbidity and mortality

   Författare :Fernanda Machungo; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Abortion; adolescents; sexually transmitted disease; maternal mortality; health economy; Maputo; Mozambique;

   Sammanfattning : In the capital city of one of the least developed countries, and using a hospital-based approach, the general aim was to characterise women who have undergone illegally and legally induced abortions, and to show the magnitude of both maternal mortality and abortion-related severe morbidity in adolescents and non-adolescents, in order to call the attention of decision-makers and health planners to this hazardous reality. Methods: In the Department of Gynaecology and Obstetrics of the Hospital Central do Maputo, 103 women undergoing induced legal abortion (LA), 103 women with confirmed, recent illegal abortion (IA), and 100 antenatal clinic (AC) attendees were compared, in order to find characteristic features regarding level of education, habitation, household, employment and religious belief. LÄS MER