Search for dissertations about: "SdH"

Showing result 1 - 5 of 9 swedish dissertations containing the word SdH.

  1. 1. Electron Scattering Mechanisms in Low-Dimensional Transport Physics

    University dissertation from Solid State Physics, Lund University

    Author : Qin Wang; [1999]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; electron scattering mechanisms; mobility; scattering time; Coulomb scattering; alloy scattering; edge states; quantum Hall effect; SdH; conductance oscillations; quantized conductance; GaInAs InP; Low-dimensional structures; GaAs AlGaAs; Physics; Fysik; Fysicumarkivet A:1999:Wang;

    Abstract : Electron scattering mechanisms in low-dimensional semiconductor systems have been investigated at low temperatures. The influence of scatterers on magnetotransport in a high-mobility, GaAs/AlGaAs two-dimensional electron gas (2DEG) system was studied. READ MORE

  2. 2. Frequency Transfer Techniques and Applications in Fiber Optic Communication Systems

    University dissertation from Solid State Physics, Lund University

    Author : Sven-Christian Ebenhag; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; synchronous digital hierarchy SDH ; UTC; synchronization; Time transfer; optical fiber; optical fiber network; GPS carrier phase; global positioning system GPS ; synchronous optical networking SONET ;

    Abstract : Modern society is dependent on communications and the developments of these increases constantly through a seemingly endless demand for communication services and thereby synchronization and time. This is confirmed by a vast range of research on communications, irrespective of technology and protocol. READ MORE

  3. 3. Time and Frequency Transfer using Passive Techniques in Active Fiber Optic Networks

    University dissertation from Solid State Physics, Lund University

    Author : Sven-Christian Ebenhag; [2010]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fiber link; optical fiber.; Global positioning system GPS ; fiber network; time transfer; two-way; synchronous optical networking SONET synchronous digital hierarchy SDH ; GPS carrier phase;

    Abstract : For the modern society, high precision time and frequency transfer have become crucial since a large number of systems, such as telecommunication systems, require precise and stable synchronization. Electric power companies use synchronized systems for taking stability measurements and searching for errors in their networks. READ MORE

  4. 4. Mitochondria targeting and its consequences for cell death in neuroblastoma

    University dissertation from Stockholm : Karolinska Institutet, Institute of Environmental Medicine

    Author : Kadri Valter; Karolinska Institutet.; Karolinska Institutet.; [2018]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Abstract : Mitochondria are one of the central regulators of several physiological and pathological processes. For instance, homeostatic glycolysis, citric acid cycle, and oxidative phosphorylation are all regulated by mitochondria. In addition, these organelles play a pivotal role in apoptosis, a process of programmed cell death. READ MORE

  5. 5. Enzymatic studies of alcohol dehydrogenase by a combination of in vitro and in silico methods

    University dissertation from Stockholm : Karolinska Institutet, Department of Medical Biochemistry and Biophysics

    Author : Mikko Hellgren; Karolinska Institutet.; Karolinska Institutet.; [2009]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Abstract : The family of alcohol dehydrogenases (ADHs) catalyzes conversions of alcohols, ketons and aldehydes. The early discovery and isolation of ADH (1937) was followed by numerous investigations. It was also the first dimeric enzyme for which the threedimensional structure was determined (1974). READ MORE