Sökning: "Time transfer"

Visar resultat 6 - 10 av 1235 avhandlingar innehållade orden Time transfer.

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

    Författare :Sven-Christian Ebenhag; Chalmers tekniska högskola; []
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER

  3. 7. Hydrogenation, Transfer Hydrogenation and Hydrogen Transfer Reactions Catalyzed by Iridium Complexes

    Författare :Xu Quan; Pher Andersson; Jonathan Williams; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Iridium catalyst; carbene; N; P - ligand; asymmetric hydrogenation; transfer hydrogenation; hydrogen transfer reaction; alkylation; olefin; ketone; amide; organisk kemi; Organic Chemistry;

    Sammanfattning : The work described in this thesis is focused on the development of new bidentate iridium complexes and their applications in the asymmetric reduction of olefins, ketones and imines. Three new types of iridium complexes were synthesized, which included pyridine derived chiral N,P-iridium complexes, achiral NHC complexes and chiral NHC-phosphine complexes. LÄS MER

  4. 8. Landscapes of Technology Transfer : Swedish Ironmakers in India 1860–1864

    Författare :Jan Af Geijerstam; KTH; []
    Nyckelord :HUMANIORA; HUMANITIES; History of technology; industrial heritage studies; industrial archaeology; technology transfer; diffusion; technological systems; landscapes of technology; iron and steel; charcoal iron; direct and indirect ironmaking; bloomeries; 19th century; indu; Historiska studier av teknik; vetenskap och miljö; History of Science; Technology and Environment;

    Sammanfattning : In the early 1860s three Swedes, Nils Wilhelm Mitander,Julius Ramsay and Gustaf Wittenström, were engaged by theBritish to build and run charcoal-based ironworks in India.These works, the Burwai Iron Works of the British Government inthe case of Mitander and the privately owned Kumaon Iron Worksin the case of Ramsay and Wittenström, were both to bebased on the most modern European technology. LÄS MER

  5. 9. Transfer of brand associations over time : the brand extension of Nivea

    Författare :Kaisa Lund; Helén Anderson; Tomas Müllern; Mats Urde; Linnéuniversitetet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Brand extension; Brand associations; Brand personality; Marketing; Marknadsföring;

    Sammanfattning : Brand extension has been the source of strategic growth for many firms during recent decades. Introducing new products under existing brand names is one way to use the image of a brand name to enter new markets. LÄS MER

  7. 10. Human Metabolism and Ecological Transfer of Radioactive Caesium

    Författare :Christopher Rääf; Malmö Medicinsk strålningsfysik; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; committed effective dose; aggregate transfer; ecological half-time; equivalent biological half-time; urianry excretion; radiocaesium; body burden; Environmental health; Miljömedicin; creatinine-normalisation; potassium-normalisation;

    Sammanfattning : The whole-body content of radiocaesium was measured in a South-Swedish urban group of people residing in the city of Lund (55.7°N, 13.2°E) between 1960 and 1994. LÄS MER