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Books in Forest science

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61-62 of 62 results in All results

Before Water Management Measures

  • 1st Edition
  • Volume 15A
  • January 1, 1985
  • Miroslav Penka + 3 more
  • English
  • eBook
    9 7 8 - 0 - 4 4 4 - 6 0 0 0 3 - 5
The ultimate motivation for the study which is the subject of this book was the need to draw conclusions on the impact of man's activity on natural ecosystems. The results characterize the situation of the south-Moravian floodplain forest in the period of fading uncontrolled floods before the extensive technical measures successively changed the moisture regime by eliminating inundation and lowering the level of underground water. This publication is unique in Czechoslovakia as it records the ecological situation in the floodplain forest prior to the major and irreversible changes. The study also documents the exceptional role played by the Central-European floodplain forest in maintaining the gene pool and structure of the one thousand or so species in flora and fauna of an agricultural region.

Thermobacteriology in Food Processing

  • 2nd Edition
  • June 28, 1973
  • C. R. Stumbo
  • English
  • Hardback
    9 7 8 - 0 - 1 2 - 6 7 5 3 5 2 - 3
  • eBook
    9 7 8 - 0 - 0 8 - 0 8 8 6 4 7 - 3
Thermobacteriology in Food Processing, Second Edition focuses on the principles involved in sterilization processes for canned goods and pasteurization of foods. The book first ponders on organisms of greatest importance in the spoilage of canned foods and food pasteurization and bacteriological examination of spoiled canned foods. Discussions focus on toxin-producing microorganisms, pathogenic microorganisms, bacteriological examination, classification of spore-bearing bacteria with reference to oxygen requirements, classification of food with respect to acidity, and interpretation of observations. The text then takes a look at contamination and its control, producing, harvesting, and cleaning spores for thermal resistance determinations, and death of bacteria subjected to moist heat. The manuscript tackles thermal resistance of bacteria and thermal process evaluation, including important terms and equations, basic considerations, general method, and conversion of heat penetration data. Topics include change of initial food temperature when the retort temperature remains the same, integrated lethality of heat at all points in the container, heat penetration and processing parameters, and determination of process lethality requirement. The publication is a valuable reference for researchers interested in thermobacteriology in food processing.

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Arboriculture

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