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53. Phonon, π electron localization and size of the charge carrier in para-phenylenevinylene oligomers and polymer: A spectroscopic study.

Author

Zerbi, G., Galbiati, E., Gallazzi, M. C., Castiglioni, C., Del Zoppo, M., Schenk, R., and Müllen, K.

Subjects
OLIGOMERS, POLYMERS, ELECTRONS, PHONONS, SPECTRUM analysis
Abstract

The vibrational infrared and Raman spectra of a series of t-butyl substituted oligomers of para-phenylenevinylene and of the corresponding polymer in the pristine and potassium-doped states have been recorded for the first time and interpreted on the basis of the theory of the effective conjugation coordinate. The Raman spectra of selectively deuteriated materials have also been analyzed. Evidence is found of strong phonon confinement. The information derived from the spectra is that the charge carrier is confined over a few monomer units and that when the polymer is doped with electron donors the benzene ring is preferentially perturbed. The data collected in this work are compared with the results from UV spectroscopy and ESR experiments which indicate a larger dimension of the charge carrier. The information which can be derived by using in a complementary way the data from these spectroscopies are presented and discussed. © 1996 American Institute of Physics. [ABSTRACT FROM AUTHOR]

Published
1996
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54. Optical spectra and structure of oligomeric models of polyparaphenylenevinylene.

Author

Tian, B., Zerbi, G., Schenk, R., and Müllen, K.

Subjects
OLIGOMERS, RAMAN effect
Abstract

This paper treats the vibrational and UV/visible spectra of oligomers of polyparaphe- nylenevinylene (PPV) and lays the background knowledge for the treatment of the spectra and structure of PPV which is treated in the paper that immediately follows. The problem of the molecular conformation of these systems is faced both with MNDO (modified neglect or differential overlap) calculations and with infrared-Raman experiments. Oligomers are certainly twisted in noncrystalline phases while may approach coplanarity in the solid. Fourier transform Raman spectra are recorded and are interpreted in terms of the recently developed theory of the effective conjugation coordinate. [ABSTRACT FROM AUTHOR]

Published
1991
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64. Bestimmung der Härte im Wasser

Author

Berczeller, L., Masters, H., Smith, H. L., Ruys, J. D., Pina de Rubies, S., Nothnagel, G., Winkler, L. W., Gottschalk, V. H., Roesler, H. A., Mayer, M., Kleiner, E. G., Klut, H., von Cochenhausen, E., Nawiasky, P. W., Korschun, S. W., Beckurts, H., Silber, J. M., Zink, J., Hollandt, Fr., Wagner, B., Singer, H., Blacher, C., Koerber, U., Jacoby, J., Bahlmann, Cl., Grünhut, L., Grittner, A., Pfeifer, J., Herbig, W., Grünberg, P., Kissa, M., Froboese, V., Pflanz, W., Nockmann, E., Fischer, H., Tilgner, M., Soltsien, P., Hundeshagen, F., Drawe, P., Grossfeld, J., Precht, H., Pfeiffer, O., Bosshard, E., Burawzow, W., Noll, H., Schenk, R., Reimer, C. L., Lüning, O., Abel, R., and Kerp, W.

Published
1919
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77. P. Struycken

Author

Blotkamp, C.H., Dekkers, D., Jobse, M., Schenk, R., Art and Culture, and Art and Culture, History, Antiquity

Published
2007

85. Morphologie

Author

Prassi, W., primary, Aichner, H., additional, Schweiberer, L., additional, Dambe, L. T., additional, Eitel, F., additional, Klapp, F., additional, Müller, J., additional, Schenk, R., additional, and Terbrüggen, D., additional

Published
1974
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86. Cost analyses of chemical micro processing for highly intensified and high-value raw material processes: real business and virtual cases

Author

Hessel, V., Ulrich Krtschil, Löb, P., Löwe, H., Kralisch, D., Kreisel, G., Küpper, M., Schenk, R., and Chemical Reactor Engineering

Abstract

As a result of its rapid development within the last years an increasing commercial interest on micro process engineering is given. Process intensification effects of this novel technology were clearly demonstrated. In this context, a generic cost view needs to be developed. As a first investigation, two generic cost analyses investigate here the profitability for two edge cases. One refers to dominance by raw materials, the other by the operator's salary. Both shares dominate the operational costs of a micro-chemical process, but in a varying extent. The write-downs of the investment costs, mainly consistent of the micro-reaction plant itself and the plant engineering, are of minor relevance. The first case study considered here focused on the synthesis of a high-value fine-chemical intermediate where raw-material costs outpaced even the high operator costs. The process under investigation is an economically conducted fine chemical process of the customized chemical producer AzurChem GmbH, the formation of the 4-cyanophenylboronic acid, using the benefits of micro process technology supplied by IMM GmbH [5] among others. This process was chosen since it is representative for several of this company's manufacturing processes of fine and specialty chemicals. The other study refers to a highly intensified process, the aqueous Kolbe-Schmitt synthesis with reaction times being reduced by three orders of magnitude, from some hours to some tens of seconds [24]. Correspondingly, space-time yield and productivity were increased using this so-called high pressure and high temperature (high-p,T) micro processing concept. For a given productivity, the operator costs are notably reduced for the micro-chemical process as compared to a batch process. A detailed view on the different cost portions will be given and demonstrate how the variable and the total costs change. For both case studies, the impact of process intensification (e.g. by scale-out) and parallel operation (e.g. by numbering-up) are pointed out.

Published
2006

88. Ellenbogenfrakturen beim Erwachsenen

Author

Groh, H., primary, Schenk, R., additional, Trojan, E., additional, Schweiberer, L., additional, Ricklin, P., additional, Krotschek, H., additional, Jahna, H., additional, Wittich, H., additional, Bernett, P., additional, Vasey, H., additional, Rehn, J., additional, Zifko, B., additional, Weber, B. G., additional, Allgöwer, M., additional, Tscherne, H., additional, Möseneder, H., additional, Beck, E., additional, Titze, A., additional, Pallesen, J., additional, Morscher, E., additional, Schneider, I., additional, Probst, J., additional, Witt, A. N., additional, Jäger, M., additional, Boitzy, A., additional, Ender, J., additional, Mumenthaler, M., additional, Scherzer, E., additional, Delank, H. W., additional, Wenzl, H., additional, Thurmayr, R., additional, Böhler, J., additional, Tönnis, D., additional, Raisch, O., additional, Engelbrecht, E., additional, and Kirschner, R., additional

Published
1973
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89. Diphosphonates

Author

FLEISCH, H., primary, BONJOUR, J.-P., additional, MORGAN, D.B., additional, REYNOLDS, J.J., additional, SCHENK, R., additional, SMITH, R., additional, and RUSSELL, R.G.G., additional

Published
1972
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90. List of Authors

Author

Abe, J., primary, Addison, G.M., additional, Auböck, L., additional, Aurbach, G.D., additional, Backer, H.J., additional, Bauer, W., additional, Bélanger, L.F., additional, Bellwinkel, S., additional, Berliner, R.W., additional, Berridge, M.J., additional, Besser, G.M., additional, Bloom, S.R., additional, Blyth, C.A., additional, Blythe, W.B., additional, Boelkins, J.N., additional, Bogentoft, C., additional, Bonjour, J.-P., additional, Bordier, P.J., additional, Bossert, H., additional, Bowers, C.Y., additional, Boyle, I.T., additional, Breckenridge, A., additional, Brewer, H.B., additional, Bucheim, W., additional, Buranapong, P., additional, Burrow, G.N., additional, Bury, A.E., additional, Bussolati, G., additional, Byfield, P.G.H., additional, Cameron, D.A., additional, Cameron, J.D., additional, Capella, C., additional, Chang, J.-K., additional, Clarke, M.B., additional, Clarkson, E.M., additional, Cooper, C.W., additional, Copp, D.H., additional, Couling, I., additional, Crentzfeldt, W., additional, Currie, B.L., additional, Dacke, C.G., additional, Davies, D., additional, D'Avila, D., additional, Deftos, L.J., additional, DeLuca, H.F., additional, de Wardener, H.E., additional, Dimond, M., additional, Doherty, D., additional, Dowling, R.H., additional, Ekholm, R., additional, Ericson, L.E., additional, Feyrter, F., additional, Fleisch, H., additional, Fleming, W.R., additional, Folkers, K., additional, Foster, G.V., additional, Freedman, R.B., additional, Friedman, N., additional, Fuchs, K., additional, Galante, L., additional, Gitelman, H.J., additional, Glass, H.I., additional, Gleeson, M.H., additional, Gray, R.W., additional, Gray, T.K., additional, Greenberg, P.B., additional, Guttmann, St., additional, Habener, J.F., additional, Håkanson, R., additional, Hanson, R.C., additional, Hardman,, J.G., additional, Haroutinian, A.M., additional, Hasenjäger, M., additional, Hesch, R.-D., additional, Hill, L.F., additional, Hodgkin, D.C., additional, Holman, C.A., additional, Holst, P., additional, Horton, R., additional, Hotz, J., additional, Hüfner, M., additional, Jones, M., additional, Jullienne, A., additional, Kenny, A.D., additional, Keutmann, H.T., additional, Krook, L., additional, Kurokawa, K., additional, Lacy, P.E., additional, Lager, I., additional, Landon, J., additional, Laragh, J.H., additional, Laurence, D.J.R., additional, Le Douarin, N., additional, Le Livre, C., additional, Lequin, R.M., additional, Ljungberg, O., additional, Lumb, G.A., additional, Lundquist, I., additional, MacIntyre, I., additional, Mahgoub, A.M., additional, Martin, T.J., additional, Mason, J., additional, Matthews, E.W., additional, Mawer, E.B., additional, Mayer, G.P., additional, Melander, A., additional, Melick, R.A., additional, Milhaud, G., additional, Mills, B.G., additional, Minne, H., additional, Morgan, D.B., additional, Moseley, J.M., additional, Moukhtar, M.-S., additional, Müller, O., additional, Munson, P.L., additional, Murray, T.M., additional, Mutt, V., additional, Nathanson, B.M., additional, Neale, G., additional, Neville, A.M., additional, Newsome, F., additional, Niall, H.D., additional, Nieta, A., additional, Ng, D., additional, Nordin, B.E.C., additional, Nutbourne, D.M., additional, O'Dor, K., additional, O'Grady, R.L., additional, Omdahl, J.L., additional, Onjes, D.A., additional, Orimo, H., additional, O'Riordan, J.L.H., additional, Orme, M., additional, Otani, K., additional, Owman, Ch., additional, Parsons, J.A., additional, Paschen, K., additional, Peacock, M., additional, Pearse, A.G.E., additional, Peng, T.-C., additional, Pierides, A.M., additional, Pilczyk, R., additional, Pless, J., additional, Polak, J.M., additional, Potts, J.T., additional, Powell, D., additional, Prince, W.T., additional, Rabin, B.R., additional, Raisz, L.G., additional, Rasmussen, H., additional, Ratcliffe, J.G., additional, Ratzenhofer, M., additional, R.-Candela, J.L., additional, Reynolds, J.J., additional, Robinson, C.J., additional, Roobol, A., additional, Rudinger, J., additional, Russell, R.G.G., additional, Schenk, R., additional, Schmidt, H., additional, Schwesinger, W.H., additional, Scott, A.P., additional, Sealey, J.E., additional, Sievertsson, H., additional, Silver, J., additional, Singer, F.R., additional, Sjöberg, N.-O., additional, Smiths, R., additional, Solcia, E., additional, Spaulding, S.W., additional, Stanbury, S.W., additional, Sundler, F., additional, Sunshine, G., additional, Sutherland, E.W., additional, Tharaud, D., additional, Thompson, G.R., additional, Tregear, G.W., additional, Trummel, C.L., additional, Tun-Chot, S., additional, Van Den Berg, C.J., additional, Vassallo, G., additional, Watts, E., additional, Welsch, U., additional, Welt, L.G., additional, Williams, C., additional, Williams, D.J., additional, Winkler, K., additional, Woodhead, J.S., additional, Woodhouse, N.J.Y., additional, Yoshikawa, M., additional, Zehnder, K., additional, and Ziegler, R., additional

Published
1972
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98. Stageverslag

Author

Schenk, R.

Abstract

September 2002. Het doctoraal III begint voor mij ( oude stijl, hoewel voor mij uiteraard nieuw ... ). Dit betekent dat het einde van de studie serieus begint te naderen en natuurlijk ook dat er werk moet worden gemaakt van het zoeken naar een stageplek, al dan niet gekoppeld aan het schrijven van een scriptie. Omdat het mij gemakkelijker leek om alle energie te richten op het schrijven van een scriptie en het stagelopen, wilde ik van te voren alle benodigde studiepunten van te volgen vakken, seminars en keuzevakken binnen hebben. Daarom begon mijn eerste trimester niet met drie, maar met vier vakken. Ik dacht dat ik zou beginnen met een stage in maart, omdat ik eigenlijk al te laat was om nog iets voor januari te regelen. Mijn interesse ging uit naar een stageplaats bij een provincie of een grotere gemeente.

Published
2003

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