• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 315
  • 290
  • 28
  • 23
  • 21
  • 12
  • 6
  • 5
  • 5
  • 5
  • 5
  • 4
  • 4
  • 4
  • 4
  • Tagged with
  • 838
  • 699
  • 255
  • 225
  • 123
  • 90
  • 89
  • 77
  • 68
  • 57
  • 57
  • 54
  • 53
  • 48
  • 46
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
31

Reactive Ionomers: N-vinylimidazolium Bromide Derivatives of Poly(isobutylene-co-isoprene) and Poly(isobutylene-co-para-methylstyrene)

Ozvald, Adam Michael 02 April 2012 (has links)
Ionomers bearing reactive ion-pair functionality are a novel class of materials that have been prepared. The N-alkylation of N-vinylimidazole by poly(isobutylene-co-isoprene) produced the reactive ionomer product in good yield, through a solvent-borne process. Solvent-free conditions can also be used to produce reactive ionomers by the N-alkylation of N-vinylimidazole by poly(isobutylene-co-para-methylstyrene). Characterization of these derivatives was carried out with the assistance of model compounds, and showed excellent agreement with 1H NMR spectra. These reactive ionomers readily crosslink with peroxide at elevated temperatures and in the absence of peroxide they have excellent thermal stability. The amount of crosslinking can be altered based on the vinyl content of the material, to target various applications. N-alkylation of N-vinylimidazole can be carried out concurrently with a non-reactive N-alkylimidazole to achieve desired vinyl contents and tailor the physical properties of these materials. These materials contain both ionic and covalent crosslink networks, and this hybrid network structure provides these materials with unique crosslink structures and stress relaxation properties. Conventional rubber fillers are compatible with these novel reactive ionomers. Carbon black and precipitated silica have no adverse effects on the peroxide crosslinking of the elastomers and a constant peroxide loading can be used regardless of the filler loading. Payne analysis shows good filler dispersion at low filler loading; however, there is some evidence of reticulate filler network formation at high filler loadings. / Thesis (Master, Chemical Engineering) -- Queen's University, 2012-03-31 21:12:46.618
32

The reaction of atomic oxygen with hydrogen peroxide.

Roscoe, John Miner. January 1968 (has links)
No description available.
33

The degrading effects of trace metals in the hydrogen peroxide bleaching of cotton

Snyder, Stuart David January 1957 (has links)
No description available.
34

Versuche zur asymmetrischen Redox-Disproportionierung von Meso-Peroxiden : neue ChromIII- und Organokatalysatoren für die asymmetrische Hetero-Diels-Alder-Reaktion /

Vogl, Nadine. Unknown Date (has links)
Köln, University, Diss., 2005.
35

Hydrogen peroxide treatment induced rectifying behavior of Au/n-ZnO contact

Gu, Qilin. January 2008 (has links)
Thesis (M. Phil.)--University of Hong Kong, 2008. / Also available in print.
36

Peroxide und andere Inhaltsstoffe aus heterothalamus-Arten und malariawirksame Abwandlungsprodukte der Peroxide /

Marek, Anne. January 1994 (has links)
Thesis (doctoral)--Rheinische Friedrich-Wilhelms-Universität Bonn, 1994.
37

The homogenous decomposition of hydrogen peroxide by plutonium (IV)

Elson, Robert E. January 1961 (has links)
Thesis (Ph.D.)--University of California, Berkeley, 1961. / "Chemistry, UC-4" -t.p. "TID-4500 (16th Ed.)" -t.p.
38

Untersuchung enzymatisch und nicht-enzymatisch gebildeter Oxylipine in Arabidopsis thaliana in der kompatiblen und der inkompatiblen Interaktion mit Pseudomonas syringae

Grun, Christoph. Unknown Date (has links) (PDF)
Universiẗat, Diss., 2006--Würzburg.
39

The role of antioxidants in the hydrogen peroxide-induced opacification of sheep lens : a thesis submitted in partial fulfilment of the requirements for the degree of Master of Science (Biochemistry) at Lincoln University /

Lei, Jie. January 2006 (has links)
Thesis (M. Sc.) -- Lincoln University, 2006.
40

Estudo comparativo da cor dental, in vivo, entre clareamentos sem aceleraçao, acelerado por LED e por laser, com análise dos resultados imediatos e a longo prazo

BRANCO, ELOISA P. 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:54:53Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:07:04Z (GMT). No. of bitstreams: 1 12797.pdf: 513559 bytes, checksum: 4b6e71bdbea803b32a3222d0b42f7b13 (MD5) / Dissertacao (Mestrado Profissionalizante em Lasers em Odontologia) / IPEN/D-MPLO / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP; Faculdade de Odontologia, Universidade de Sao Paulo, Sao Paulo

Page generated in 0.1954 seconds