Sökning: "Partial factor"

Visar resultat 1 - 5 av 200 avhandlingar innehållade orden Partial factor.

  1. 1. Measurement and Analysis of Partial Discharges at Semi-Square Voltages

    Författare :Elisabeth Lindell; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; space charge; Partial discharges PDs ; short rise time; partial discharge measuring techniques; square-like voltages; repetitive voltages; corona;

    Sammanfattning : Insulation is today being exposed to voltages having considerably higher frequency components than the conventional power frequency AC 50 Hz or 60 Hz, for example in motors supplied by adjustable speed drives based on pulse width modulated converters. This has in many cases caused unexpected behaviour of the insulation systems. LÄS MER

  2. 2. Partial resolution of the energy transfer system in chromatophores from Rhodospirillum rubrum : purification and characterization of the "coupling factor" ATPase

    Detta är en avhandling från Stockholm : Stockholm University

    Författare :Bo C. Johansson; [1975]

    Sammanfattning : .... LÄS MER

  3. 3. Auralisation of partial sound sources

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Nicklas Frenne; [2002]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknisk akustik; Engineering Acoustics;

    Sammanfattning : This Licentiate thesis focuses on the development of a method for auralisation of partial sound sources. In many work environments, noise is a primary annoyance factor. A specific problem is the masking of important aural information either by high noise levels or by too efficient sound insulation. LÄS MER

  4. 4. Block stability analysis using deterministic and probabilistic methods

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Mehdi Bagheri; KTH.; [2011]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Block stability analysis; Model uncertainty; Joint relaxation; Partial factor; Sensitivity analysis;

    Sammanfattning : This thesis presents a discussion of design tools for analysing block stability around a tunnel. First, it was determined that joint length and field stress have a significant influence on estimating block stability. LÄS MER

  5. 5. Study on the Function of Translation Initiation Factor IF1

    Detta är en avhandling från Stockholm : Institutionen för genetik, mikrobiologi och toxikologi

    Författare :Victor Croitoru; Stockholms universitet.; [2006]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; translation; initiation factor IF1; mutagenesis; A-site; RNA chaperone; NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : Initiation is the first step in protein biosynthesis representing a fundamental event in cell life which determines fidelity, efficiency and regulation of gene expression. In addition to the ribosome and mRNA, three protein factors IF1, IF2 and IF3 are involved in the initiation of translation in prokaryotes. LÄS MER