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  • 1
    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
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 49 (1984), 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: Survival, spore germination, and growth of emetic and diarrheal type strains of Bacillus cereus were evaluated in broth and rice media during heating and cooling. Samples were heated to 80°C (20C°/hr or 40C°/hr) or 90°C (ca. 900C°/hr), prior to cooling to 10°C (5C°/hr or 10C°/hr). Following heating to 80°C, growth occurred during 5C°/hr cooling. After heating to 90°C, inactivation of three strains occurred during cooling from 90 to 80°C and again from 50 to 40°C. Great variability was observed among the responses of the four strains. Emetic strains exhibited greater survival than diarrheal strains. Rice reduced low temperature inactivation, and did not favor emetic strains. Significant two and three way interactions existed among media, strains, heating and cooling rates.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 48 (1983), 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: Germination and growth of Bacillus cereus spores from emetic and diarrheal strains were measured in Trypticase soy broth (TSB) and in autoclaved rice/beef extract from 5°– 55°C. Growth for some strains occurred from 15°– 50°C, and little difference was noted between responses of diarrheal and emetic types or between media, except a higher maximum population was achieved in rice. Germination was more extensive in rice than in TSB at 〈15°C and was generally more extensive for diarrheal strains in either medium.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 47 (1982), 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: Bacillus cereus has been implicated as the cause of both diarrheal and emetic forms of food-borne illness. Spores of eight strains of B. cereus, representing diairheal, emetic and atoxigenic origins, were examined for heat resistance and germination responses. No correlation was observed between heat resistance at 85° or 90°C and origin of the strain. Germination of spores in Trypticase soy broth at 30°C, measured by loss of heat resistance, was more extensive for diarrheal strains than for emetic strains. These data should be useful in evaluating potential hazards from B. cereus in foods.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Calcified tissue international 6 (1970), S. 260-264 
    ISSN: 1432-0827
    Keywords: Bone ; Human ; Tissue ; Histology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Description / Table of Contents: Résumé De l'os spongieux humain est utilisé pour déterminer la viabilité de cellules osseuses après exposition, pendant un temps déterminé, à l'air et au sérum physiologique. La réaction de Feulgen, ainsi que la culture de tissus sont utilisées pour déterminer la viabilité des cellules osseuses. Il apparait qu'aucun ostéocyte ne survit après 30 minutes d'exposition à l'air et au sérum physiologique. Les cellules de la moëlle ne survivent pas à 2 heures d'exposition ö l'air, ou 6 heures d'exposition au sérum physiologique. Le nombre de cellules qui survivent après action de l'air et du sérum physiologique diminue progressivement en fonction de l'augmentation du temps d'exposition.
    Abstract: Zusammenfassung Poröser Knochen von Erwachsenen wurde zur Bestimmung der Überlebenszeit von Knochenzellen verwendet, nachdem er während bestimmter Zeiten der Luft oder physiologischer Kochsalzlösung ausgesetzt wurde. Um diese Überlebenszeit zu bestimmen, wurde die Feulgen-Reaktion gleichzeitig mit der Gewebekultur durchgeführt. Daraus läßt sich schließen, daß keine Osteocyten überleben, nachdem sie 30 min der Luft oder der Kochsalzlösung ausgesetzt waren. Markzellen überlebten nicht, wenn sie 2 Std der Luft oder 6 Std der Kochsalzlösung ausgesetzt waren. Die Anzahl überlebender Zellen nimmt ab, wenn die Dauer, während welcher sie der Luft oder der Kochsalzlösung ausgesetzt werden, zunimmt.
    Notes: Abstract Adult human cancellous bone was used to determine the viability of bone cells after timed exposure to air and saline. To determine the viability of the bone cells, the Feulgen reaction was used in conjunction with tissue culture. It is concluded that no osteocytes survived after 30 minutes exposure to air or saline. Marrow cells do not survive after 2 hours exposure to air, or 6 hours exposure to saline. The number of surviving cells after exposure to air or saline progressively diminishes as the time of exposure increases.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: Admixing of several antibiotic powders which were insoluble in methyl methacrylate did not decrease the compressive and diametral tensile strengths of two acrylic bone cements when tested after setting for 1 day and after leaching 40 days in water at 37°C. When antibiotics were added as water solutions, the included water resulted in a significant decrease in these bulk mechanical properties.Storage in water for 40 days caused surface irregularities only on specimens of the set antibiotic admixtures. Approximately 0.5% of the admixed dosage of these water-soluble antibiotics could be leached from the set cements. The observed surface channels, presumably left by the loss of antibiotic, suggest further study of surface-sensitive mechanical properties may be needed.The bulk mechanical strengths presented here are conclusive only for the particular combinations of antibiotics and cements investigated, and should not be generalized at this time to any or all antibiotic admixtures or other mechanical properties.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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