Search for dissertations about: "SDH"

Showing result 1 - 5 of 11 swedish dissertations containing the word SDH.

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

   Author : Sven-Christian Ebenhag; Chalmers tekniska högskola; []
   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

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

   Author : Sven-Christian Ebenhag; Chalmers tekniska högskola; []
   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

5. 3. Aetiologies and Epidemiology of Subdural Haematoma in Infancy

   Author : Jacob Andersson; Ingemar Thiblin; Håkan Sandler; Andreas Buettner; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Abusive Head Trauma; Shaken Baby Syndrome; Subdural Haematoma; External hydrocephalus; Rättsmedicin; Forensic Medicine;

   Abstract : According to scientific studies, subdural haematoma (SDH) in combination with retinal haemorrhage and encephalopathy (usually denoted as the triad) during infancy is highly specific for abusive head trauma/shaken baby syndrome, if a fall from over one meter, a traffic accident and certain medical conditions have been excluded. Other studies have challenged this notion since there are witnessed falls from less than one meter which has caused acute SDH, birth-related SDH which have been confirmed to develop into chronic SDH, and external hydrocephalus that can be complicated by a spontaneous SDH or an SDH from minor trauma. READ MORE

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

   Author : Kadri Valter; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   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

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

   Author : Mikko Hellgren; Karolinska Institutet; Karolinska Institutet; Sweden Stockholm Karolinska Institutet Department of Medical Biochemistry and Biophysics; []
   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