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8. Higher order parametric X-ray spectra in mosaic graphite and single silicon crystals

Author

Fiorito, R.B., Rule, D.W., Maruyama, X.K., DiNova, K.L., Evertson, S.J., Osborne, M.J., Snyder, D., Rietdyk, H., Piestrup, M.A., Ho, A.H., Freitag, R., Naval Postgraduate School (U.S.), and Physics

Abstract

We have observed up to eight orders (n) in the spectra of parametric x-radiation, in the range 5-40 keV, produced by the interaction of a 90 Mev electron beam with mosaic graphite and 90 and 35 Mev beams with single silicon crystals. The measured yields and intensity ratios, I(2)/I(n= I), in graphite are not in agreement with the theory of PXR for mosaic crystals. In comparison, the yield and ratios of intensities in silicon are close to the predictions of PXR theory for perfect crystals. The bandwidths of spectral lines measured in both silicon and graphite are in good agreement with theoretical predictions, and are determined by the angular field of view of the detector. U.S. Department of Energy DNA Naval Postgraduate School Contract No. DE-FG03-91ER81099

Published
1993

11. The SPP biotech module 1: proteins for medical applications: a multidisciplinary effort for the development of a recombinant anti-RhD antibody preparation for the prevention of hemolytic disease of the newborn

Author

Amstutz, H., Miescher, S., Moudry, R., Dejardin, S., Imboden, M., Morgenthaler, J. J., Zahn, M., Kobr, M., Fisch, I., Corthesy, B., Mermod, N., Berruex, L., Abdellali, M., Bruggemann, O., Fraboulet, D., Freitag, R., Kragten, E., Nahrgang, S., Ducommun, P., Pugeaud, P., Marison, I., Von Stockar, U., De Jesus, M., Jordan, M., Bourgeois, M., Hunt, L., Radice, S., Baldi, L., Kulangara, A., Girard, P., Ribicki, R., and Wurm, F. M.

Abstract

A review with 0 refs. is presented regarding studies of a multidisciplinary team to establish the prophylactic principle and the manufg. process for anti-Rh D therapy based on recombinant antibody prepns. produced from Chinese hamster ovary cells. [on SciFinder (R)]

21. Utilisation of the sol-gel technique for the development of novel stationary phases for capillary electrochromatography on a chip

Author

Constantin, S., Freitag, R., Solignac, D., Sayah, A., and Gijs, M. A. M.

Subjects
Capillary electrochromatography (CEC), Sol-gel technique, Microchip, Stationary phase
Abstract

Capillary electrochromatography (CEC) appears ideally suited for high performance separations at small scale, i.e. on a chip. Problems with the reproducible production of the required HPLC column, but also the lack of commercially available CEC instruments have prevented many putative applicants of this promising technique from entering the field. In this paper, a fast and easy way to produce self-containing open-tubular CEC columns (C8-moieties for reversed phase applications) by the sol-gel technique is described. The corresponding chips were designed to be compatible with a commercial system for capillary electrophoresis (namely a Beckman P/ACE 5500 system with diode array detection). Method development and application hence benefited from the injection and the detection options of this setup. The separation of a mixture of three uncharged analytes (polycyclic aromatic hydrocarbons) by the chip is given as example. Under optimized conditions, the performance of the chip appeared to be comparable or better than that of capillary-based CEC columns of the same kind.

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