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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Environmental science & technology 25 (1991), S. 547-550 
    ISSN: 1520-5851
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 63-64 (Dec. 1998), p. 207-214 
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
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  • 3
    ISSN: 1432-0630
    Keywords: PACS: 78.60Hk; 71.55Eq
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract. Cathodoluminescence (CL) in the scanning electron microscope has been applied to study the luminescence emission of GaN single crystals grown by LPE methods. CL spectra show the presence of near band edge and of yellow emissions. The latter has been found to be mainly related to rows of hillocks formed at the growth steps. The origin of the yellow luminescence is discussed
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Il nuovo cimento della Società Italiana di Fisica 7 (1986), S. 322-326 
    ISSN: 0392-6737
    Keywords: Molecular photon processes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Sulle basi del modello quantostatistico recentemente discusso, in questo lavoro si trattano le perturbazioni indotte dall'intenso campo di un laser a CO2 sui livelli del percorso vibrazionale di una molecola sottoposta a dissociazione unimolecolare multifotonica. Questa correzione perturbazionale è studiata usando una tecnica con operatori di dislocazione e i risultati sono interpretati secondo il modello statistico.
    Notes: Summary On the basis of a quantum-statistical model recently discussed, we deal in this paper with the perturbations induced by the intense field of a CO2 laser on the levels of the vibrational pattern of a molecule undergoing multiphoton unimolecular dissociation. This perturbational correction is investigated by using a displacement operator technique and the results are interpreted according to the statistical model.
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Il nuovo cimento della Società Italiana di Fisica 9 (1987), S. 431-445 
    ISSN: 0392-6737
    Keywords: Molecular photon processes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto È stato studiato il quasi-continuo vibrazionale della molecola del trifluoruro di boro e il formalismo è stato esteso per trattare molecola conN modi normali. Sono state calcolate le curve anarmoniche del potenziale per i modi normali di BF3 e sono state provate le costanti di anarmonicità calcolate rispetto alle frequenze fondamentali. La curva del potenziale del modo di scuotimento è stata simulata mediante una rotazione interna di uno degli atomi del fluoruro. Sono stati calcolati i livelli di energia vibrazionale e le funzioni d'onda, applicando la teoria di perturbazione di secondo ordine. Sono stati ottenuti i livelli di energia quasi continua del BF3 mediante un metodo basato sulla formazione di adeguate combinazioni lineari di funzione d'onda che appartengono ai modiN-1 che risultano rimuovendo il modo i.r. attivo; le energie associate sono state minimizzate usando una procedura di minimizzazione vincolata. Si è trovato che il modello di energia degliN-1 modi vibrazionali una densità di energia alta abbastanza per costituire un bagno vibrazionale di calore e, infine, si è verificato che il modello «fittizio» del modo attivo è incluso nel modello degliN-1 modi.
    Abstract: Резюме Качественно исследуются колебательньій квазиконтиуум молекульі BF3 и предлагается обобщенньій формализм для рассмотрения молекул сN-нормальньіми модами. Вьічисляются потенциальньіе кривьіе для нормальньіх мод BF3. Вьічисленньіе константьі ангармоничности проверяются на фундаментальньіх частотах. Потенциальная кривая для модьі моделируется с помощью внутреннего вращения одного из атомов фтора. Вьічисляются уровни знергии колебательного движения и волновьіе функции, используя теорию возмущений второго порядка. Уровни энергии квазиконтинуума BF3 получаются с помощью метода, основанного на образовании адекватньіх линейньіх комбинаций волновьіх функций, принадлежащихN-1, модам, которьіе возникают при удалении инфракрасной активной модьі. Ассоциированньіе энергии минимизируются, используя ограниченную процедуру минимизации. Получено, что спектр энергии дляN-1 колебательной модьі обладает достаточно вьісокой плотностью для образования колебательной тепловой бани. В заключение, проверяется, что «фиктивньій» спектр активной модьі включается в спектр дляN-1 модьі.
    Notes: Summary The vibrational quasi-continuum of the boron trifluoride molecule has been qualitatively studied and the formalism extended to treatN-normal-mode molecules. The anharmonic potential curves for the BF3 normal modes have been calculated, and the computed anharmonicity constants have been tested against the fundamental frequencies. The potential curve of the wagging mode has been simulated by an internal rotation of one of the fluoride atoms. The vibrational-energy levels and wave functions have been calculated applying second-order perturbation theory. The quasi-continuum energy levels of BF3 have been obtained by means of a method based in forming adequate linear combinations of wave functions belonging to theN-1 modes resulting from removing the i.r.-active mode; the associated energies have been minimized using a constrained minimization procedure. It has been found that the energy pattern of theN-1 vibrational modes possesses an energy density high enough for constituting a vibrational heat bath and, finally, it has been verified that the «fictitious» pattern of the active mode is included in the pattern of theN-1 modes.
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 63 (1998), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: High pressure/cooking combinations (200 MPa and 400 MPa, 70°C) of chicken gels caused the formation of less compact and aggregated microstructures, which had better binding properties and were less hard. Pressurizing caused a general decrease in color parameters. The addition of starch, egg white or iota carrageenan increased water binding of meat batters. The effect of adding starch and iota carrageenan on textural properties was similar, both causing an increase in hardness and chewiness. High pressure influenced the action of the ingredients and the extent of the effect was related to the type of ingredient and the pressure level but pressure clearly predominated over ingredient effects.
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 63 (1998), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The application of high pressure (200 and 400 MPa, 30 min) favored water and fat binding properties of chicken and pork batters even at low ionic strength. Textural properties of meat batters (particularly hardness and chewiness, and to a lesser extent springiness and cohesiveness) were influenced by cooking temperature. High pressures influenced the texture of batters, so that pressurized samples were less hard, cohesive, springy or chewy than nonpressurized samples; this effect was not related to on salt concentration. High pressure treatment limited the formation of gel structures, which probably was associated with its preserving effect against thermal denaturation of meat proteins.
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 61 (1996), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The effects of fat (7.0, 14.0 and 20.0%), starch (0, 5 and 10%) and egg white (0, 1.5 and 3%) on the microstructure and texture of bologna sausages were examined. As levels of fat and starch increased, the microstructure exhibited increasing numbers of holes (P〈0.05), smaller in size (P〈0.05) and similar (P〉0.05) in shape. No clear relationship was found between addition of egg white and these morphological variations. Low-fat sausage (7.0%) was less hard and chewy (P〈0.05) than high-fat (20.0%) sausage; likewise, a direct relationship was found between starch and egg white content and hardness and chewiness of the bologna.
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  • 9
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 177 (1956), S. 41-41 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] An analogous situation also involving Amerindians and Caucasians is provided by -the Diego factor recently described by Levine, Koch, McGee and Hill2. This factor, discovered to be the cause of an erythroblastosis case in a Venezuelan family, was first considered to be rare because two hundred ...
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  • 10
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Archives of Biochemistry and Biophysics 208 (1981), S. 154-159 
    ISSN: 0003-9861
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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