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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European journal of nutrition 29 (1990), S. 192-196 
    ISSN: 1436-6215
    Keywords: Ascorbic acid metabolism ; Callitrichidae ; stress ; 14CO2-excretion ; Ascorbinsäurestoffwechsel ; Krallenaffen ; Streß ; 14CO2-Ausscheidung
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Medicine
    Description / Table of Contents: Zusammenfassung Bei den beiden Affenarten Callithrix jacchus und Saguinus fuscicollis, die der gleichen Neuweltaffenfamilie der Krallenaffen angehören, wurden extrem unterschiedliche Serumascorbatspiegel gefunden, obwohl die Tiere unter identischen Bedingungen in derselben Kolonie gehalten wurden. Die14C-Ausscheidung von oral verabreichter 1-14C-AA wurde unter marginaler wie auch reichlicher Vitamin-C-Versorgung sowie unter Streßbedingungen untersucht. Zwischen niedriger und hoher Vitamin-C-Versorgung traten große Unterschiede im14C-Ausscheidungsmodus auf. Der Speziesunterschied war dabei geringer als der Unterschied zwischen individuellen Streß-/Nichtstreß-Bedingungen, aber in beiden Fällen war er gleichartig. In vergleichbaren Versuchen reagierte S. fuscicollis derart, daß ein höherer Streßzustand bei dieser Spezies angenommen werden kann.
    Notes: Summary Recently it has been found that the two monkey species Callithrix jacchus and Saguinus fuscicollis, both belonging to the same New World monkey family Callitrichidae and held in the same colony under identical conditions, had extremely different serum ascorbate levels. To examine the ascorbic acid metabolism the14C-excretion of orally given 1-14C-ascorbic acid was studied under conditions of marginal and abundant vitamin C supply and under intentional stress. There were large differences in the mode of14C excretion between low and high ascorbate supply. The differences were smaller between stress/no stress conditions intraindividually than between the two species, but they were in the same manner. In comparable trials S. fuscicollis reacted such that a higher status of stress can be supposed in this species.
    Type of Medium: Electronic Resource
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  • 2
    Publication Date: 2015-02-14
    Description: Plastic debris in the marine environment is widely documented, but the quantity of plastic entering the ocean from waste generated on land is unknown. By linking worldwide data on solid waste, population density, and economic status, we estimated the mass of land-based plastic waste entering the ocean. We calculate that 275 million metric tons (MT) of plastic waste was generated in 192 coastal countries in 2010, with 4.8 to 12.7 million MT entering the ocean. Population size and the quality of waste management systems largely determine which countries contribute the greatest mass of uncaptured waste available to become plastic marine debris. Without waste management infrastructure improvements, the cumulative quantity of plastic waste available to enter the ocean from land is predicted to increase by an order of magnitude by 2025.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jambeck, Jenna R -- Geyer, Roland -- Wilcox, Chris -- Siegler, Theodore R -- Perryman, Miriam -- Andrady, Anthony -- Narayan, Ramani -- Law, Kara Lavender -- New York, N.Y. -- Science. 2015 Feb 13;347(6223):768-71. doi: 10.1126/science.1260352.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉College of Engineering, University of Georgia, 412 Driftmier Engineering Center, Athens, GA 30602, USA. jjambeck@uga.edu. ; Bren School of Environmental Science and Management, University of California, Santa Barbara, CA 93106, USA. ; Oceans and Atmosphere Flagship, Commonwealth Scientific and Industrial Research Organization, Castray Esplanade, Hobart, Tasmania 7000, Australia. ; DSM Environmental Services, Windsor, VT 05089, USA. ; College of Engineering, University of Georgia, 412 Driftmier Engineering Center, Athens, GA 30602, USA. ; Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695, USA. ; Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, MI 48824, USA. ; Sea Education Association, Woods Hole, MA 02543, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25678662" target="_blank"〉PubMed〈/a〉
    Keywords: Environmental Pollution/*statistics & numerical data ; Oceans and Seas ; *Plastics ; Seawater ; Waste Management/*statistics & numerical data ; *Waste Products ; *Water Pollutants, Chemical
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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