Sökning: "detection efficiency"

Visar resultat 21 - 25 av 419 avhandlingar innehållade orden detection efficiency.

  1. 21. Fiber-Optic Systems with Coherent Detection and Four-Dimensional Modulation

    Författare :Martin E Sjödin; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; intradyne; polarization-switched QPSK; quadrature phase-shift keying QPSK ; coherent detection; self-homodyne; wavelength-division multiplexing; 16-ary quadrature amplitude modulation; self-phase modulation; 128-SP-QAM; polarization multiplexing; pilot tone;

    Sammanfattning : To increase the data rates of fiber-optic communication systems, modulation formats withhigher spectral efficiency and/or higher power efficiency than binary formats are of greatinterest. These formats require coherent detection and this thesis has been dedicated toinvestigating both novel modulation formats and two different types of coherent systems. LÄS MER

  3. 22. Long-term properties of polyethylene films : efficiency of a natural antioxidant

    Författare :Clara Strandberg; Ann-Christine Albertsson; Jukka Seppälä; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Polymer Technology; alfa-tocopherol; Polyethylene PE ; Thermal aging; Infrared Spectroscopy FT-IR ; Chemiluminescence CL ; Solid-phase microextraction SPME ; Chemistry; Kemi;

    Sammanfattning : There is a growing awareness of the risks of pollution in biological systems and one potential problem is the synthetic antioxidants, used for e.g. the stabilisation of polymeric materials. Natural antioxidants are an interesting alternative, if the high efficiency and thermal stability of the synthetic compounds can be reached. LÄS MER

  4. 23. Towards Pattern Detection in Software

    Författare :Niklas Pettersson; Växjö universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Datalogi; Computer science; Datalogi; Computer and Information Sciences Computer Science; Data- och informationsvetenskap;

    Sammanfattning : This thesis investigates methods to improve the detection of design patterns in software systems. Design pattern detection may be used to aid other tasks, such as architectural recovery of systems with poor documentation, measurement of software quality, and optimization of software systems. LÄS MER

  5. 24. Molecular Tools for Biomarker Detection

    Författare :Lei Chen; Ulf Landegren; Niko Hildebrandt; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Rolling circle amplification; padlock probe;

    Sammanfattning : The advance of biological research promotes the emerging of new methods and solutions to answer the biological questions. This thesis describes several new molecular tools and their applications for the detection of genomic and proteomic information with extremely high sensitivity and specificity or simplify such detection procedures without compromising the performance. LÄS MER

  7. 25. Amyloid aggregates: detection and interaction

    Författare :Mahafuzur Rahman; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The research on protein aggregation and amyloid formation is motivated by the fact that amyloid formation in tissue is harmful and associated with several debilitating diseases including Alzheimer’s disease (AD) and systemic amyloidosis such as transthyretin (ATTR) amyloidosis. Nevertheless, their beneficial roles in Nature have recently been identified, and artificial self-assembling of amyloid structure for various applications are emerging. LÄS MER