Sökning: "Lena George"

Hittade 4 avhandlingar innehållade orden Lena George.

  1. 1. Spontaneous abortion : risk factors and measurement of exposures

    Författare :Lena George; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Case-control study; caffeine; cotinine; environmental tobacco smoke; epidemiology; fetal karyotype; folate; maternal smoking; pregnancy; repeated spontaneous abortion; risk assessment; smoking cessation; spontaneous abortion; validation study;

    Sammanfattning : The overall objectives of this thesis were to increase the understanding of the etiology of spontaneous abortion and repeated spontaneous abortion, and to evaluate possibilities of exposure assessment during pregnancy. Data from a Swedish population-based case-control study of spontaneous abortion, performed in Uppsala County 1996-98, formed the base for the three first studies of the thesis. LÄS MER

  3. 2. Structured Nanoporous Materials for Biogas Upgrading

    Författare :Kritika Narang Landström; Farid Akhtar; Andreas Kaiser; George Shimizu; Marta-Lena Antti; Manuel Moliner Marín; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nanoporous materials; biogas upgrading; zeolites; metal-organic framework; carbon capture; separation kinetics; Materialteknik; Engineering Materials;

    Sammanfattning : Porous materials have shown potential for solving one of the significant challenges to sequestering CO2 gas from point sources. Microporous materials, zeolites and metal-organic frameworks (MOFs) are porous materials with tailorable adsorptive properties to develop higher performance for an energy-efficient CO2 separation. LÄS MER

  4. 3. Orchestration Strategies for Slicing in 5G Networks : Design and Performance Evaluation

    Författare :Muhammad Rehan Raza; Paolo Monti; Lena Wosinska; George Rouskas; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; software defined networking; network function virtualization; orchestration; dynamic slicing; 5G; big data analytics; reinforcement learning; Informations- och kommunikationsteknik; Information and Communication Technology;

    Sammanfattning : The advent of 5th generation of mobile networks (5G) will introduce new challenges for the infrastructure providers (InPs). One of the major challenges is to provide a common platform for supporting a large variety of services. LÄS MER

  5. 4. Gene Regulation and Epigenetic Mechanisms in the Parasite Trypanosoma cruzi

    Författare :Patricia Respuela; Lena Åslund; George A.M. Cross; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Molecular biology; Molekylärbiologi; Molecular Biology; Molekylärbiologi;

    Sammanfattning : Trypanosomes are unicellular protozoan parasites responsible for several human diseases that affect millions of people and cause thousands of casualties every year. They also represent a primitive eukaryotic model system harboring unique processes and basic regulatory mechanisms such as RNA-editing, polycistronic transcription and trans-splicing, first described in these organisms. LÄS MER