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  • 1
    Electronic Resource
    Electronic Resource
    ZINC AND MAGNESIUM BIOAVAILABILITY FROM ACID-PRECIPITATED AND NEUTRALIZED SOYBEAN PROTEIN PRODUCTS (1980)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 45 (1980), 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 bioavailability of zinc (Zn) and magnesium (Mg) from soy protein products freeze-dried at different pH's was investigated. Soy concentrates and isolates were produced by both acid precipitation (acid soy) or acid precipitation with subsequent neutralization to pH 7.0 (neutral soy). The bioavailability studies involved feeding growing rats isonitrogenous and isocaloric diets based on egg white (with added ZnCO3 or MgCO3) or soy product (substituted in egg white diets to provide equivalent Zn or Mg). Linear regression analysis related amount of Zn (or Mg) in diet to: rat growth (zinc studies), log tibia Zn (or Mg), or serum Mg. Experiments I, II, IV, and V compared the availability of endogenous Zn or Mg from these soy products with ZnCO3 or MgCO3. Experiment III measured the effect of the presence of the acid or neutral soy in rat diets upon the availability of supplemental Zn as ZnCO3. Results of experiments I, II, and IV testing the bioavailability of endogenous zinc showed growth for rats on acid soy was equal to growth from ZnCO3 and greater than from neutral soy. Log tibia zinc analysis demonstrated zinc from both acid and neutral soy products to be less available than ZnCO3 Zn added (Experiment III) to either soy product was highly available. Mg (Experiment V) was highly available from all soy products. It was concluded that neutralization of soy products may result in decreased availability of endogenous Zn but not endogenous Mg.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1980.tb06519.x
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  • 2
    Electronic Resource
    Electronic Resource
    The Antiqua Legio of Vegetius (1932)
    Cambridge : Cambridge University Press
    The @classical quarterly 26 (1932), S. 137-149 
    Details
    ISSN: 0009-8388
    Source: Cambridge Journals Digital Archives
    Topics: Classical Studies
    Notes: In the second book of his Epitoma rei militaris Vegetius sets himself the task of describing the organization of the antiqua legio of the Roman Army, the units into which it was divided, its officers, the arms of its soldiers, and its tactical employment on the field of battle. Interspersed in this account are frequent references to changes that had been subsequently effected and were in operation in the author's lifetime. But although these annotations destroy the synthesis of the book, and the transition from past to present is not always clearly indicated, the disentanglement of Vegetius' own additions from the material provided by his source or sources is not the chief difficulty that confronts the modern historian. For with few exceptions in chapters 4–14 Vegetius describes the antiqua legio in the imperfect, the legion of his own time in the present indicative, with the not infrequent addition of the word ‘nunc’ or ‘hodie.’ The great problem is to discover whether in his account of the antiqua legio the author is referring to any one period of Roman History, and, if so, whether its limits can be exactly defined. Many solutions have been attempted. Some scholars have thought that the period is earlier than Hadrian; the more generally accepted theory is that the antiqua legio can be identified with the legion as it was constituted in the reign of Diocletian. Recently two German historians have subjected the evidence to fresh consideration, and, while one of them agrees with the majority in selecting the age of Diocletian for his answer to the problem, the other believes that he can date the period to which Vegetius is referring to the late second century A.D.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1017/S0009838800014324
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  • 3
    Electronic Resource
    Electronic Resource
    Statistical treatment of outlier data in epithermal gold deposit reserve estimation (1991)
    Springer
    Mathematical geology 23 (1991), S. 175-199 
    Details
    ISSN: 1573-8868
    Keywords: outliers ; lognormal distribution ; ore reserve estimation ; epithermal gold deposits ; indicator kriging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Mathematics
    Notes: Abstract A common characteristic of gold deposits is highly skewed frequency distributions. Lognormal and three-parameter lognormal distributions have worked well for Witwatersrand-type deposits. Epithermal gold deposits show evidence of multiple pulses of mineralization, which make fitting simple distribution models difficult. A new approach is proposed which consists of the following steps: (1) ordering the data in descending order. (2) Finding the cumulative coefficient of variation for each datum. Look for the quantile where there is a sudden acceleration of the cumulative C.V. Typically, the quantile will be above 0.85. (3) Fitting a lognormal model to the data above that quantile. Establish the mean above the quantile, Z H * . This is done by fitting a single or double truncated lognormal model. (4) Use variograms to establish the spatial continuity of below-quantile data (ZL) and indicator variable (1 if below quantile, 0 if above). (5) Estimate grade of blocks by (1*) (Z L * )+(1 − 1*) (Z H * ), where 1* is the kriged estimate of the indicator, and Z L * is the kriged estimate of the below quantile portion of the distribution. The method is illustrated for caldera, Carlin-type, and hot springs-type deposits. For the latter two types, slight variants of the above steps are developed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02066294
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