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  • Articles  (9)
  • International Union of Crystallography (IUCr)  (5)
  • Blackwell Publishing Ltd  (4)
  • American Physical Society (APS)
  • 1975-1979  (9)
  • 1
    Electronic Resource
    Electronic Resource
    THE ALKYLBENZENES IN ROAST BEEF (1977)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 42 (1977), S. 0 
    Details
    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 volatile components of roast beef were isolated by a specially designed gas entrainment apparatus. The isolated compounds were separated into acidic, basic and neutral fractions. The neutral fraction was further separated by repeated gas chromatography on two different stationary phases and collected as subfractions. The individual subfractions thus obtained were analyzed by gas chromatography-mass spectrometry. Mass spectral identifications were confirmed by comparing the mass spectra and relative retention times with authentic compounds. A total of 20 n-alkylbenzenes and substituted alkylbenzenes were positively identified, many for the first time in cooked beef. These alkylbenzenes are probably derived from the fat present in the beef by thermal oxidation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1977.tb01532.x
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  • 2
    Electronic Resource
    Electronic Resource
    PRELIMINARY IDENTIFICATION OF VOLATILE FLAVOR COMPOUNDS IN THE NEUTRAL FRACTION OF ROAST BEEF (1979)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 44 (1979), S. 0 
    Details
    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 volatile flavor compounds (VFC) in the neutral fraction of roast beef flavor isolate were identified in this study. The VFC from 150 lb of eye round roast beef were isolated and separated into acidic, basic and neutral fractions. Since the latter fraction was the only one to have a pleasant roast beef-like aroma, it was the only fraction further analyzed. The components of the neutral VFC fraction were separated into relatively pure subfractions by repetitive gas chromatography and collection in “hairpin” cold traps. The relatively pure subfractions were then analyzed by GC-MS combination. More than 120 compounds were identified including a number of lactones, substituted aromatic compounds, furan compounds, and sulfur-containing compounds. The aforementioned classes of compounds may play significant roles in the roast beef flavor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1979.tb08465.x
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  • 3
    Electronic Resource
    Electronic Resource
    Piroplasms from Taiwanese Rodents (1977)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 24 (1977), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SYNOPSIS. Piroplasms from naturally infected bandicoot rats, Bandicota indica (Hodgson), and spiny rats, Rattus coxinga (Swinhoe), from Taiwan caused parasitemias in a wide range of laboratory animals after syringe passage in laboratory rats. Bandicoot and spiny rats could be infected with heterologous piroplasms, but neither species was susceptible to infection with the Gray strain of Babesia microti (França). Nevertheless, the Taiwan piroplasms are probably a geographic strain of B. microti.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1977.tb00984.x
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  • 4
    Electronic Resource
    Electronic Resource
    Simultaneous four-beam Borrmann diffraction (1977)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 33 (1977), S. 90-97 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: A general procedure is described for the calculation of n-beam Borrmann diffraction effects. These include the coordinates of points on the sheets of the dispersion surface, absorption coefficients, excitation of modes of propagation and transmitted intensities. The procedure has been used to calculate four-beam effects involved in the simultaneous transmission of the 000, 1{\bar 1}1, 3{\bar 11} and 20{\bar 2} reflections through essentially perfect germanium crystals. Emphasis has been placed on calculations which illustrate the transitions from four-beam interactions to one or two-beam cases. The minimum value of the absorption coefficients for Cu Kα1 at the exact four-beam setting is 6.2 cm-1, compared with the 'normal' coefficient of 352 cm-1. The effects of several relevant variables on transmitted intensities and on the effective absorption coefficients, are described. High-resolution divergent-beam photographs, utilizing a microbeam X- ray source and an evacuated path of 160 cm from crystal to film, reveal a number of previously unreported anomalies in the transmitted intensities. The calculated values of the corresponding reflection intensities agree well with these observations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567739477000199
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  • 5
    Electronic Resource
    Electronic Resource
    An ambiguity in indexing Renninger diagrams and the distinction between some opposite directions in cubic crystals (1978)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 34 (1978), S. 825-826 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: In the course of a discussion of the nature of an ambiguity in the indexing of Renninger peaks the possibility was discovered of distinguishing some opposite directions in a cubic crystal without recourse to anomalous scattering. A multiple-diffraction experiment performed on a (111) Ge plate rotated about [222] enabled distinction between the [1{\bar 1}0] and [0{\bar 1}1] directions to be made. The azimuthal angles counted from alternative zero meridians containing [1{\bar 1}0] or [0{\bar 1}1] are the same, but give rise to peaks indexed hkl and 2 - l,2 - h,2 - k respectively. However, dynamically equivalent situations 222, hkl/(2 - h,2 - k,2 - l) and 222, (2 - l,2 - h,2 - k)/lhk are geometrically different, being distinguished as Bragg-Laue and Bragg-Bragg, respectively, or vice versa.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567739478001679
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  • 6
    Electronic Resource
    Electronic Resource
    The number of permitted modes of propagation in N-beam dynamical diffraction of X-rays (1979)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 35 (1979), S. 543-547 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: It is shown that the real part of the root of the dispersion equation for the permitted modes of propagation is always positive for two-beam Laue and Bragg reflections at the exact diffraction position. Based on this, a general rule is proposed to determine the number, Np, of permitted modes of propagation for N-beam dynamical diffraction, where no extremely asymmetric reflections are involved. In other words, for both σ- and π-polarized wavefields, Np= 2(N- NBragg), where NBragg is the number of Bragg reflections involved. This conclusion is supported by calculations for three-, four-, six- and eight-beam cases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567739479001303
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  • 7
    Electronic Resource
    Electronic Resource
    High-order multiple diffraction in GaAs (1975)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 31 (1975), S. 832-835 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Multiple diffraction patterns of a single crystal of GaAs have been recorded with Cu Kα1 radiation. Calculations indicated that 19 peaks, all involving reflections with odd indices, should be observed in the 45° asymmetric angular range of the multiple diffraction pattern. All these were observed and indexed. In addition, six sharp but barely detectable intensity minima, were observed in the background. These result from one eight-beam, one six-beam, and four four-beam interactions, all involving reflections with even indices. The geometry of these interactions is discussed and their integrated intensities have been calculated. These show fair agreement with the corresponding measured intensities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567739475001805
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  • 8
    Electronic Resource
    Electronic Resource
    Sodium chlorite trihydrate (1975)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 31 (1975), S. 2146-2149 
    Details
    ISSN: 1600-5740
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567740875007078
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  • 9
    Electronic Resource
    Electronic Resource
    DEEP FAT FRYING CHARACTERISTICS OF BUTTEROIL (1977)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 42 (1977), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A study was undertaken to determine whether the addition of methylsiloxane (silicone) to butteroil would improve the chemical and physical stability of the butteroil during actual deep fat frying conditions, and whether the storage stability of potato chips fried in siloxanetreated butteroil would be increased. A deep fat frying study was performed using butteroil (BO), butteroil with 10 ppm of silicone (BOS), and a commercial corn oil containing silicone (CO). Potato slices were fried in the oils on a daily basis and evaluated for flavor using a trained organoleptic panel. The storage stability of the chips was also determined by means of the peroxide values and the Schaal oven test. The thermal stability of the oils was determined with the smoke point test, total acid content and nonurea adduct-forming esters (NUAFE). The results of this study showed that the addition of silicone to butteroil unproved its stability by decreasing its total acid content and NUAFE, by raising the smoke point and by lowering the degree of foaming. Also, the flavor of the BOS chips retained their high acceptability and preference over the BO chips. The storage stability of the BOS chips was also improved as shown by lower peroxide values and longer Schaal oven tests during storage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1977.tb12678.x
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