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  • 1
    Electronic Resource
    Electronic Resource
    Quality of Different Honduran Coffees in Relation to Several Environments (2003)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 68 (2003), 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: : To better know the cup quality of Honduran coffee, a study was carried out on samples from 52 Arabica coffee plots spread throughout 6 producing regions in Honduras. The aim was to identify environmental and agronomic factors that affect coffee quality. Biochemical and physical characteristics of coffees after roasting were used to link quality descriptors to these variables by means of multiple factor analyses. Coffees of superior quality came from the Olancho and El Paraíso regions. High altitudes and annual rainfall of under 1500 mm were favorable factors for the sensory quality. An optimum roasting time must be sought for each type of coffee, hence for each terroir.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.2003.tb05772.x
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  • 2
    Electronic Resource
    Electronic Resource
    Durchdringung von Zellulose-Azetat-Membranen von Wasser bei niederem Druck. II. Natur des Durchflusses (1980)
    Springer
    Colloid & polymer science 258 (1980), S. 989-989 
    Details
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01584939
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  • 3
    Electronic Resource
    Electronic Resource
    Durchdringung von Zellulose-Azetat-Membranen von Wasser bei niederem Druck. 1. Versuchsergebnisse und ihre AbhangigReit von aer Temperatur. (1980)
    Springer
    Colloid & polymer science 258 (1980), S. 989-989 
    Details
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01584938
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  • 4
    Electronic Resource
    Electronic Resource
    The toxic effect of aluminium in vines (1988)
    Springer
    Journal of radioanalytical and nuclear chemistry 120 (1988), S. 97-104 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The split-root technique was used to study the effect of varying the growth media on the elemental content of nutrient elements in the roots of grape vines. The varieties 2-1 (R99 x Jacquez) and Sauvignon blanc (Vitis vinifera) were grown in Hoagland water culture with and without added aluminium. The elemental concentrations of Mg, Al, Si, P. S, Cl, K and Ca in the dried roots were determined by PIXE. Roots grown in Al-rich media were deficient in Mg and Ca, but enriched in Al. There was a correlation between Al and Si but the uptake differed in the two varieties.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02037855
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  • 5
    Electronic Resource
    Electronic Resource
    PIXE analysis of human stones: Comparison with data from ICP-AES (1987)
    Springer
    Journal of radioanalytical and nuclear chemistry 119 (1987), S. 441-448 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract 25 human stone samples previously analyzed by inductively coupled plasma atomic emission spectroscopy /ICP-AES/ and the IAEA Animal Bone Standard Reference Material were used to evaluate trace element analysis by PIXE. Bombardment with 4 MeV protons was used for the determination of Mn, Fe, Cu, Pb, Br, Rb, Sr as well as Ca. PIXE and ICP-AES data gave correlation factors better than 0.97 for the elements Ca, Fe, Zn, Sr and Pb.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02261206
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  • 6
    Electronic Resource
    Electronic Resource
    Nuclear analytical study of rock paintings (1991)
    Springer
    Journal of radioanalytical and nuclear chemistry 151 (1991), S. 221-227 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract An exfoliated fragment of a rock painting from Lesotho was analyzed by differentiated backscatter spectrometry to obtain the paint thickness, which ranged from about 2 to 6.5 μm, and its empirical formula for stopping power calculations. Elemental composition was determined by PIXE. Fe-rich paint spots were red in color and Ca-rich ones, pinkish. Because of the chemical mobility of calcium, this paint component should become the focus to which conservation techniques should be directed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02040149
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  • 7
    Electronic Resource
    Electronic Resource
    Analytical study of pottery from Soutpansberg (1991)
    Springer
    Journal of radioanalytical and nuclear chemistry 151 (1991), S. 229-237 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Potsherds from north and south of the Soutpansberg mountain range in Transvaal were analyzed by PIXE to establish possible trade patterns between the two regions, over the last thousand years. Correspondence analysis based on the content of 12 elements made it possible to distinguish pottery from the two regions, irrespective of where they were found. A model combining elemental and stylistic analysis was developed to explain both the physical movement of pots and the diffusion of ideas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02040150
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  • 8
    Electronic Resource
    Electronic Resource
    Prompt analysis of rare earths by high-energy PIXE (1991)
    Springer
    Journal of radioanalytical and nuclear chemistry 151 (1991), S. 387-396 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Thin targets of rare earth fluorides were bombarded with 66 and 85 MeV protons. Measured cross sections for X-ray production agreed with PWBA calculations. Satellite X-rays from nuclear reactions were obtained for both (Z-1) and (Z+1) products from the bombardment of element Z. Interference-free sensitivities were of the order of tens of nanograms under bombardment with 1 mC of integrated charge. The technique was applied for the analysis of geological ores and standards.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02035499
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  • 9
    Electronic Resource
    Electronic Resource
    PIXE yield enhancement of metal fluorides under bombardment with charged particles (1994)
    Springer
    Journal of radioanalytical and nuclear chemistry 178 (1994), S. 387-397 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The abnormally high yields of X-rays from metal fluorides were considered to be charge related or due to the prompt gamma rays from the decay of coulomb excitation of the19F nucleus. A detailed study with singly and doubly charged helium-3 ions confirmed the exceptionally high enhancement of the metal X-rays from the fluorides, but the mechanism favoured a discharge process from charge build-up in the insulating targets.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02039732
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  • 10
    Electronic Resource
    Electronic Resource
    A study of deuteron-induced delayed X-rays from some transition elements (1994)
    Springer
    Journal of radioanalytical and nuclear chemistry 188 (1994), S. 43-54 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract High resolution K X-ray spectrometry preceded by activation with deuterons is an unexplored area in the field of activation analysis. This work describes the capabilities of this technique and evaluates its analytical potential for the specific determination of transition metals in small samples. Detection of the delayed X-rays coupled with their rate of decay provided a unique indication of the target component and its concentration. Analytical conditions are demonstrated for the elements of interest and the potential for application to the general routine determination of the transition metals and some of their isotopes, is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02164981
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