ZIB

1

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Double- π0 photoproduction from the deuteron (2000)

Kleber, V. ; Achenbach, P. ; Ahrens, J. ; [et al.]

Springer

The European physical journal 9 (2000), S. 1-4

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ISSN: 1434-601X

Keywords: PACS. 13.60.Le Meson production – 25.20.Lj Photoproduction reactions

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract: The photoproduction of two neutral pions from the deuteron has been studied for incident photon energies from 200 MeV to 820 MeV with the TAPS spectrometer at MAMI (Mainz Microtron). The total cross-section was determined and used to deduce the cross-section from the neutron. Due to the good statistical quality of the data Dalitz plots for the three particles in the exit channel (π0π0 N) could be constructed. The invariant mass distributions derived from them are presented in this paper. They indicate that the important reaction mechanism in the second resonance region is a sequential decay pattern involving the population of the Δ(1232)-resonance as an intermediate state.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/s100500070047

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2

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Photoproduction of neutral pion pairs from the proton (2000)

Wolf, M. ; Ahrens, J. ; Beck, R. ; [et al.]

Springer

The European physical journal 9 (2000), S. 5-8

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ISSN: 1434-601X

Keywords: PACS. 13.60.Le Meson production – 25.20.Lj Photoproduction reactions

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract: Double neutral pion photoproduction from the proton has been measured at MAMI for photon energies between threshold and 820 MeV. The reaction was identified by an invariant mass and missing mass analysis. From threshold up to 370 MeV the total cross-section does not exceed 30 nb. For higher energies it shows a smooth rise until it reaches a maximum of about 10 μb at E γ = 740 MeV. Dalitz plots of m 2(π0π0) versus m 2(p,π0) for seven bins of incident photon energy have been analysed. For E γ 〉 610 MeV, a strong contribution of a sequential decay is observed with the Δ(1232)-resonance as intermediate state. A comparison to model calculations shows that these sequential decays presumably originate from the D 13(1520) and also the P 11(1440)-resonance.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/s100500070048

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3

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Applicability of a continuum solvation model to the octanol water transfer: CFF91 based model for amino acids (1995)

Schmidt, A. B. ; Fine, R. M.

New York : Wiley-Blackwell

Biopolymers 36 (1995), S. 599-605

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ISSN: 0006-3525

Keywords: Chemistry ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: A continuum hydration model based upon the atomic charges provided with the CFF91 force field [A. B. Schmidt and R. M. Fine (1994) Molecular Simulation, 13. 347-365] has been extended to the octanol-water transfer. The electrostatic component of the transfer free energy is calculated using the finite-difference solution to the Poisson-Boltzmann equation while the nonpolar contributions are assumed to be proportional to the solute-excluded volume in water. All atomic charges and radii besides the aromatic carbon radius are equal in both solvents. The octanol dielectric constant and the probe radius are the main fitting parameters defining the octanol phase. The model has been tested for 38 organic molecules related to the amino acid residues and generally provides a high accuracy. In particular, the mean unsigned error for N-acetyl amino acid amides is 0.5 kcal/mol. © 1995 John Wiley & Sons, Inc.

Additional Material: 4 Tab.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/bip.360360505

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4

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Eine neue methode zur herstellung von hydroxyterminierten polydienen (1990)

Trathnigg, B. ; Krause, D. ; Dworczak, R. ; [et al.]

Weinheim : Wiley-Blackwell

Angewandte Makromolekulare Chemie 174 (1990), S. 69-80

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ISSN: 0003-3146

Keywords: Chemistry ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology , Physics

Description / Table of Contents: It is shown, that hydroxyterminated polydienes of good microstructure and functionality and a narrow molecular weight distribution can be prepared using di-hydroxyethyl-azo-bis-isobutyramide as an initiator. The activation energy of the initiator decay has been determined by volumetric measurement of the nitrogen evolved in this reaction.

Notes: Es wird gezeigt, daß hydroxyterminierte Polydiene mit guter Mikrostruktur und Funktionalität sowie enger Molekulargewichtsverteilung unter Verwendung von Azobis-isobuttersäure-di-hydroxyethylamid hergestellt werden können. Die Aktivierungsenergie des Initiatorzerfalls wurde durch volumetrische Messung des bei dieser Reaktion freiwerdenden Strickstoffs bestimmt.

Additional Material: 3 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/apmc.1990.051740106

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5

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Graphit als Werkstoff im chemischen Apparatebau (1951)

Schmidt, A.

Weinheim [u.a.] : Wiley-Blackwell

Materials and Corrosion/Werkstoffe und Korrosion 2 (1951), S. 93-95

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ISSN: 0947-5117

Keywords: Chemistry ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Notes: Allgemeine Eignung von Graphit als Apparatewerkstoff - Entwicklung von Graphitwärmeaustauschern durch die I. G. Farbenindustrie, Bitterfeld - Imprägniermittel und -verfahren zur Verringerung der Porosität des Graphits - Verbindung von Bauelementen aus Graphit.

Additional Material: 2 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/maco.19510020304

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6

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Produktabtrennung bei Alkohol-Fermentationen (1992)

Friedl, A. ; Schmidt, A.

Weinheim : Wiley-Blackwell

Chemie Ingenieur Technik - CIT 64 (1992), S. 871-872

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ISSN: 0009-286X

Keywords: Chemistry ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology

Additional Material: 1 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/cite.3306409153

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7

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Polymers and resins. Their chemistry and chemical engineering. Brage Golding. Van Nostrand, New York, 1959. 744 pp. $15.00. (1959)

Schmidt, A. X.

Hoboken, NJ : Wiley-Blackwell

Journal of Polymer Science 40 (1959), S. 277-278

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ISSN: 0022-3832

Keywords: Chemistry ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology , Physics

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/pol.1959.1204013626

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8

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Über die polymeranaloge verzweigung von amylose durch isocyanatzucker25. Mitt. der Reihe: Über natürliche und synthetische Amylose. 24. Mitt.: W. BURCHARD, Makromolekulare Chem. 64 (1963) 110. (1963)

Husemann, Von E. ; Schmidt, A. P. O.

New York : Wiley-Blackwell

Die Makromolekulare Chemie 65 (1963), S. 114-121

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ISSN: 0025-116X

Keywords: Chemistry ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology , Physics

Description / Table of Contents: By addition of 1-isocyanat-tetraacetylglucose to the hydroxylgroups of unsubstituted amylose we introduced branches are introduced in linear polysaccharides. The degree of branching attained was calculated from acetyl and nitrogen values. The highest degree of branching was about 0.8. The desacetylated branched polysaccharides were soluble in water.

Notes: Mit Hilfe der Additionsreaktion von 1-Isocyanato-tetraacetylglucose an die Hydroxylgruppen von Polysacchariden wurden in unsubstituierte Amylose Glucoseverzweigungen eingeführt. Der Verzweigungsgrad konnte aus Stickstoff- und Acetylbestimmungen ermittelt werden. Es wurden Verzweigungsgrade von über Z = 0,8 erreicht. Die von den Acetylgruppen befreiten Substanzen waren z. T. gut wasserlöslich.

Additional Material: 2 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/macp.1963.020650116

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9

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Automatic computer control of fermentation processes (1984)

Balzer, D. ; Hesse, J. ; Schmidt, A.

Berlin : Wiley-Blackwell

Acta Biotechnologica 4 (1984), S. 11-16

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ISSN: 0138-4988

Keywords: Life Sciences ; Life Sciences (general)

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Process Engineering, Biotechnology, Nutrition Technology

Notes: The application of an optimization algorithm to fermentation processes is described, which is based on information received by means of cascading the input quantities with pseudo random binary signals. The results in optimization of temperature, pH-value as well as productivity are presented and discussed.

Additional Material: 5 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/abio.370040104

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10

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Handbook of neurochemistry. Vol. 2. Experimental Neurochemistry. Second Edition. New York, London: Plenum Press, 1982. 475 pp., $ 59.50 (1986)

Schmidt, A.

Berlin : Wiley-Blackwell

Acta Biotechnologica 6 (1986), S. 205-205

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ISSN: 0138-4988

Keywords: Life Sciences ; Life Sciences (general)

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Process Engineering, Biotechnology, Nutrition Technology

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/abio.370060223

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