Sökning: "[3 1] method"

Visar resultat 1 - 5 av 3020 avhandlingar innehållade orden [3 1] method.

  1. 1. Studies towards a method for incorporation of 3'-deoxy-3'-C-methylenephosphonate linkages into oligonucleotides

    Författare :Anna Winqvist; Colin B. Reese; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organisk kemi; Organic Chemistry; organisk kemi;

    Sammanfattning : Synthetic strategies towards 3’-deoxy-3’-C-methylenephosphinate building blocks were explored. The key transformations involved stereoselective hydroboration of 1-[2-O-(tert-butyldimethylsilyl-5-O-(4-methoxytrityl)-3-deoxy-3-C-methylene- ß -D-erythro-pentofuranosyl]uracil to give the corresponding 3’-deoxy-3’-C- hydroxymethyl derivative with ribo-configuration, as well as the further conversion into a precursor with a suitable leaving group, e. LÄS MER

  3. 2. Barshalder 1 : A cemetery in Grötlingbo and Fide parishes, Gotland, Sweden, c. AD 1-1100. Excavations and finds 1826-1971

    Författare :Martin Rundkvist; Ingmar Jansson; Siv Kristoffersen; Stockholms universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Barshalder; Grötlingbo; Fide; Gotland; cemetery; graves; burial; Iron Age; Roman Iron Age; Migration Period; Vendel Period; Viking Period; landscape history; gender; typology; chronology; seriation; correspondence analysis; social stratification; status; religion; paganism; Christianity; Christianisation; Archaeology subjects; Arkeologiämnen;

    Sammanfattning : The prehistoric cemetery of Barshalder is located along the main road on the boundary between Grötlingbo and Fide parishes, near the southern end of the island of Gotland in the Baltic Sea. The cemetery was used from c. AD 1-1100. LÄS MER

  4. 3. Synthesis of Nitrogen Heterocycles via 1,3-Dipolar Cycloadditions - Method Development and Applications

    Författare :Johan Johansson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; 2D NOESY; alkyne; 3-dipolar cycloaddition; azomethine ylide; 1; CNTs; azide; sequential one-pot; SEM EDS; microwave heating; RuAAC; CuAAC;

    Sammanfattning : Because of the diverse properties displayed by nitrogen heterocycles, they are one of the most commonly used structural elements in drug discovery. Due to this variation in properties, however, the chemistry and synthetic pathway to each heterocycle is unique. LÄS MER

  5. 4. Kritisk granskning : mönster för kritisk undersökning i historisk och kunskapsteoretisk belysning

    Författare :Jan Willner; Stockholms universitet; []
    Nyckelord :HUMANIORA; HUMANITIES;

    Sammanfattning : The study contains a description of traditional patterns of critical reading and an analysis of their epistemological significance. The objective is to clarify an important educational concept in such a way that it can be seen how competence in critical reading can be taught and observed. LÄS MER

  7. 5. Direction of Arrival Estimation and Localization of Multiple Speech Sources in Enclosed Environments

    Författare :Mikael Swartling; Blekinge Tekniska Högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Beamforming; Detection and classification; Speech enhancement; Source localization;

    Sammanfattning : Speech communication is gaining in popularity in many different contexts as technology evolves. With the introduction of mobile electronic devices such as cell phones and laptops, and fixed electronic devices such as video and teleconferencing systems, more people are communicating which leads to an increasing demand for new services and better speech quality. LÄS MER