Search for dissertations about: "current gain"

Showing result 1 - 5 of 372 swedish dissertations containing the words current gain.

  1. 1. Gestational Weight Gain Implications of an Antenatal Lifestyle Intervention

    University dissertation from Örebro : Örebro university

    Author : Ann-Kristin Rönnberg; Örebro universitet.; [2016]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; gestational weight gain; maternal health; pregnancy; prevention of obesity; lifestyle intervention; childhood obesity; Surgery; Kirurgi;

    Abstract : Background: Excessive gestational weight gain (GWG) is common in developed countries and is associated with an increased risk of maternal and offspring morbidity. Evidence regarding efficacy and safety of antenatal lifestyle intervention is limited in terms of both systematic reviews and original trials. READ MORE

  2. 2. DC-DC Converters - Dynamic Model Design and Experimental Verification

    University dissertation from Department of Industrial Electrical Engineering and Automation, Lund Institute of Technology

    Author : Bengt Johansson; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; robotics; buck; dc-dc converter; modeling; audio susceptibility; current-mode control; load current; gain scheduling; current transformer; experimental verification; Electronics and Electrical technology; Automation; Elektronik och elektroteknik; Elektroteknik; Electrical engineering; reglerteknik; robotteknik; Automatiska system; control engineering;

    Abstract : To obtain high performance control of a dc-dc converter, a good model of the converter is needed. The load usually affects the dynamics and one way to take this into consideration is to regard the load as a part of the converter. The load is often the most variable part of this system. READ MORE

  3. 3. Pregnancy weight gain : family studies on the effects on offspring’s body size and blood pressure

    University dissertation from Stockholm : Karolinska Institutet

    Author : Elina Scheers Andersson; [2016]

    Abstract : Introduction: Increasing maternal weight gain during pregnancy, gestational weight gain (GWG), is associated with several adverse outcomes in the child, e.g. high birth weight, childhood overweight and obesity, as well as adult blood pressure (BP). READ MORE

  4. 4. From Current Collectors to Electrodes Aluminium Rod Structures for Three-dimensional Li-ion Micro-battery Applications

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Gabriel Oltean; Kristina Edström; Leif Nyholm; Erik Kelder; [2014]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; 3D micro-batteries; aluminium; titanium oxide; current collectros; negative electrodes; electrodepostion; electrophoretic depostion; sol-gel synthesis;

    Abstract : The potential use of 3D aluminium nanorod structures as current collectors and negative electrodes for 3D Li-ion micro-batteries was studied based on the use of relatively simple and cost-effective electrochemical and sol-gel deposition techniques.Aluminium rod structures were synthesised by galvanostatic electrodeposition using commercial porous membranes as templates. READ MORE

  5. 5. Design Optimization and Realization of 4H-SiC Bipolar Junction Transistors

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Hossein Elahipanah; Mikael Östling; Carl-Mikael Zetterling; Anders Hallèn; Adolf Schöner; Tsunenobu Kimoto; [2017]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; 4H-SiC; BJT; high-voltage and ultra-high-voltage; high-temperature; self-aligned Ni-silicide Ni-SALICIDE ; lift-off-free; wafer-scale; current gain; Darlington; Electrical Engineering; Elektro- och systemteknik; Informations- och kommunikationsteknik; Information and Communication Technology;

    Abstract : 4H-SiC-based bipolar junction transistors (BJTs) are attractive devices for high-voltage and high-temperature operations due to their high current capability, low specific on-resistance, and process simplicity. To extend the potential of SiC BJTs to power electronic industrial applications, it is essential to realize high-efficient devices with high-current and low-loss by a reliable and wafer-scale fabrication process. READ MORE