Sökning: "cluster"

Visar resultat 21 - 25 av 1209 avhandlingar innehållade ordet cluster.

  1. 21. FOSTERING INCLUSIVE INNOVATIVE PROCESSES WITHIN A BOLIVIAN CLUSTER INITIATIVE

    Författare :Wendy Sofia Sanzetenea Ramirez; Pirjo Elovaara; Andreas Larsson; Gabriela Dutrénit; Blekinge Tekniska Högskola; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bolivia; Cluster Development; Triple Helix; Knowledge Production; Participatory Action Research.; Technoscience studies; Teknovetenskapliga studier;

    Sammanfattning : The main theme in this licentiate thesis is the focus on strengthening institutional capacities to promote cooperation within a cluster initiative between public and private sectors in Latin American contexts, especially in Bolivia. The argument is the need to generate spaces for interaction through participatory practices in order to incorporate different points of view, academic and non-academic, which can lead to a more critical production and appropriation of knowledge. LÄS MER

  3. 22. Subvalent Cluster Compounds and Synthesis in Alternative Reaction Media

    Författare :Josefin Åkerstedt; Lars Kloo; Mats Johnsson; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; metal cluster; Zintl ion; metal-organic sandwich complex; ionic liquid; X-ray diffraction; spectroscopy; crystal structure; Inorganic Chemistry;

    Sammanfattning : With the aim of finding alternative reaction media for the synthesis of subvalent main group and transition metal cluster compounds, traditionally made through solid state reactions or in superacidic media, different alternative reaction media have been explored in this work. Room-temperature ionic liquids are amongst the more unconventional reaction media used. LÄS MER

  4. 23. Aspects of inflammation and nitric oxide in cluster headache

    Författare :Anna Steinberg; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Cluster Headache;

    Sammanfattning : Cluster Headache (CH) is an uncommon headache disorder, with severe implications for the individual patient. The headache is excruciating, unilateral and appearing in attacks. It is common that CH patients show ipsilateral associated symptoms, like for example conjunctival injection, lacrimation and nasal congestion. LÄS MER

  5. 24. Reactivity of Metal Clusters with Diatomic Molecules

    Författare :Lotta Holmgren; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nbn; cluster; reactivity; Rhn; NO; D2; CO; N2; laser vaporization; Wn; Nin; photoionization; time-of-flight mass spectrometer; ionization potential; Cun; O2; Vn;

    Sammanfattning : The reactivity of transition-metal clusters, in the approximate size range 10-60 atoms, with diatomic molecules has been investigated. A pulsed beam of neutral clusters is produced by a laser-vaporization source and passed through a low-pressure reaction cell containing the reactive gas. LÄS MER

  7. 25. Coordination of Phosphine-Thioether Ligands to Low-valent Metal Centers

    Författare :Roger Persson; Kemisk fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; polynuclear metal complexes; fluxional behavior; cluster; thioether; phosphine; crystal structure; sulfur; triosmium;

    Sammanfattning : The reactivity of the phosphine-thioether ligands bis(2-diphenylphosphino) ethylthio)ethane (PSSP), bis(2-(diphenylphosphino) ethyl)sulfane (PSP), PPh2CH2CH2SMe (PS), PPh2(o-C6H4SMe (PortoS), and PPh(o-C6H4SMe)2 (PSS) towards low-valent carbonyl clusters has been studied. In all structurally characterized clusters, the ligand donor atoms are terminally coordinated. LÄS MER