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  • Articles  (7)
  • Springer  (7)
  • 1975-1979  (6)
  • 1965-1969  (1)
  • 1910-1914
  • 1905-1909
  • 1977  (6)
  • 1968  (1)
Collection
  • Articles  (7)
Years
  • 1975-1979  (6)
  • 1965-1969  (1)
  • 1910-1914
  • 1905-1909
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Meteorology and atmospheric physics 26 (1977), S. 39-50 
    ISSN: 1436-5065
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Description / Table of Contents: Zusammenfassung Im Dezember 1975 wurden durch eine Fesselballonsonde die vertikalen Temperatur- und Windprofile im Gore River Valley im westlichen Colorado ermittelt. Aus Beobachtungen an einem wolkenlosen Morgen bei einer anfangs starken Inversion im Tal zeigte sich, daß die Inversionsobergrenze stetig um 120 m Std−1. absank und nach ungefähr vier Stunden den Talgrund erreichte. Schwache Talabwinde wehten innerhalb der Inversionsschicht. während stärkere Talaufwinde oberhalb derselben herrschten. Eine Hypothese wird vorgeschlagen, um diese Beobachtungen zu erklären. Die Abkühlung am späten Nachmittag und am Abend, wobei die Bildung einer Inversion einsetzte, deren Schichtdicke in weniger als zwei Stunden 175 m betrug, ist Gegenstand einer gesonderten Untersuchung. Winde innerhalb der Inversionsschicht wurden nicht mehr von den Winden in der freien Atmosphäre beeinflußt und blieben im Laufe der Nacht sehr schwach. Bewölkung während der Erwärmungsperiode an einem Morgen hatte zur Folge, daß das Temperaturprofil sich Isothermie näherte, indem Erwärmung gleichmäßig im ganzen Luftraum des Tales sich fortsetzte.
    Notes: Summary A tethered balloon sounder was used to collect vertical temperature and wind structure data in the Gore River Valley of Western Colorado during December, 1975. Observations taken on a clear morning in which a deep inversion was initially present in the valley showed that the inversion top descended at a steady rate of ∼120 m hr−1. reaching the valley bottom after approximately 4 hours. Weak down-valley winds were present within the inversion layer while stronger up-valley winds prevailed above. A hypothesis is presented to account for these observations. A case study is presented for afternoon and evening cooling in which a ground-based inversion developed to a depth of 175 m in less than 2 hours. Winds within the inversion became decoupled from the synoptic-scale winds and remained very weak during the night. The effect of cloud cover during a morning heating cycle was to make the temperature soundings approach isothermal while sensible heating continued throughout the valley volume.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Environmental management 1 (1977), S. 343-348 
    ISSN: 1432-1009
    Keywords: Flood-plain vegetation ; Land use ; Channelization ; Bank-stabilization ; Flood-plain forest succession
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Changes in vegetation and land use since 1826 were evaluated along the 800 kilometer portion of the Missouri River flood-plain that extends across the State of Missouri using County Land Office Survey records for 1826 and aerial photos for 1937, 1958, and 1972. The combined results show a decline in flood-plain forest coverage from 76% in 1826 to 13% in 1972; cultivated land increased from 18% to 83% during the same time. Uncultivated-unforested areas increased from 6% in 1826 to 27% in 1937, then declined to 1% in 1972; these changes occurred coincident with extensive bank-stabilization and channelization activities initiated in 1912 by the U.S. Army Corps of Engineers. Riverbank stabilization activity since that time may account for the increased rate of decline in flood-plain forests from 0.25% per year between 1826 and 1937 to 1.6% per year between 1937 and 1972. The overall species composition of the 1826 flood-plain forests was found to be most similar to mature forest stands evaluated in 1972; similar frequencies in 1826 and 1972 occurred for hackberry (Celtis occidentalis; 80% in 1826, 83% in 1972), elm (Ulmus spp.; 80% and 83%), and sycamore (Platanus occidentalis; 57% and 50%). Pawpaw (Asimina triloba), found only in mature flood-plain forests in 1972, was recorded along 54% of the 1826 section lines. These combined data indicate (1) that pre-settlement flood-plain forests were extensive and included frequent, mature stands, (2) that in certain areas substantial portions of the flood-plain were in cultivation prior to extensive riverbank stabilization and channelization, and (3) that increased flood-plain forest clearing occurred coincident with increased bank-stabilization activities.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Plant foods for human nutrition 15 (1968), S. 350-371 
    ISSN: 1573-9104
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Résumé La technique d'une part et l'abondance des aliments d'autre part ont causé des modifications dans l'alimentation par les céréales, aussi bien en ce qui concerne la quantité que la qualité. Le développement de la fabrication moderne du pain présente les caractéristiques suivants: préférence du froment, des farines très blanches, des procédés accélérés de fermentation et de cuisson dans la fabrication. En conséquence, on obtient des pains plus riches en calories, mais pauvres en subtances nutritives et aromatiques ayant une croûte mince et molle et une mie légère ne nécessitant pas d'efforts de mastication. En vitaminisant et en révalorisant artificiellement le pain, on ne peut remplacer qu'une partie minime des substances enlevées au blé par la moulure. L'utilisation de plus en plus fréquente de procédés chimiques dans l'agriculture et le stockage des récoltes entraîne l'existence de plus en plus importante de résidus non physiologiques dans le blé. Parmi ces produits et procédés ont été mentionnés: un produit destiné à raccourcir la tige du blé, produit qui influence l'azote des plantes; le pourcentage élevé en plomb découvert dans le blé ayant poussé à proximité des autostrades; le pourcentage plus élevé en „Phenantren“ et „3–4-Benzpyren“, trouvé dans les plantes poussant dans les régions industrielles; la production d'aflatoxine causée par la moisissure des produits emmagasinés; les résidus de produits insecticides connus jusqu'à présent; les modifications néfastes constatées dans le blé traité aux rayons gamma en vue d'une conservation plus facile. Les modifications dues à l'influence de la chaleur de cuisson sont à constater particulièrement dans la croûte du pain; elles frappent avant tout certaines substances sensibles à la chaleur ainsi que des processus de condensation suivantMaillard.
    Abstract: Summary Engineering progress and an abundance of foodstuff are the cause of strong quantitative and qualitative changes observed in our bread. The development of modern bread is marked by a preference given to wheat, by a lower degree of grinding up, by a short time of fermentation and baking, which results in bread of increased caloric content, reduced active agents and content of aroma, in bread with a thin, soft crust and a very porous crumb, thus necessitating a lesser mastication. By means of an artificial enrichment of vitamins, minerals, and separated amino-acids, only a very small part of active agents separated by grinding up can be replaced. Increasing application of chemical processes in agriculture and storage ensued an increased presence of non-physiological residues in corn. Among them are mentioned an agent to shorten the length of stalks that interferes with the nitrogen economy of plants; an increased content of lead in fields near highways; an increased content of phenanthren and 3–4 benzpyren in fields near industrial areas; the possible formation of aflatoxin through getting mouldy during storage; residues of pesticides that have become known up to now; as well as hitherto prove harmful alterations due to ray treatment by gamma rays to corn to achieve a better preservation. Changes brought about by the heat during the baking process are particularly clearly shown in the crust of bread which essentially have regard to damaging heat-sensitive contents and proceedings of condensation according toMaillard.
    Notes: Zusammenfassung Technisierung und Überfluß an Nahrungsmitteln sind Ursache von starken quantitativen und qualitativen Veränderungen der Brotnahrung. Die Entwicklung des modernen Brotes ist durch Bevorzugung des Weizens, niedriger Ausmahlung, kurzer Gär- und Backzeiten gekennzeichnet, was zu Broten von erhöhtem Kaloriengehalt, vermindertem Wirkstoff- und Aromagehalt, von Broten mit dünner, weicher Kruste und sehr poröser Krume führt, die geringere Kauarbeit erfordern. Durch künstliche Anreicherung mit Vitaminen, Mineralstoffen und Aminosäuren kann nur ein kleiner Teil der bei der Vermahlung abgetrennten Wirkstoffe ersetzt werden. Steigende Anwendung chemischer Verfahren in der Land- und Lagerwirtschaft hat die vermehrte Anwesenheit unphysiologischer Rückstände im Getreide zur Folge. Unter ihnen werden erwähnt ein Halmverkürzungsmittel, das in den Stickstoffhaushalt der Pflanzen eingreift, der in der Nähe von Autobahnen erhöhte Bleigehalt, der in industrienahen Gebieten erhöhte Gehalt an Phenanthren und 3–4-Benzpyren, die mögliche Bildung von Aflatoxin durch Verschimmelung während des Lagerns, die bisher bekanntgewordenen Rückstände von Schädlingsbekämpfungsmitteln sowie die bisher nachgewiesenen nachteiligen Veränderungen einer Bestrahlung des Getreides mit Gamma-Strahlen zwecks bequemerer Konservierung. Unter dem Einfluß der Backhitze sich vollziehende Veränderungen kommen besonders deutlich in der Kruste des Brotes zum Ausdruck, die sich im wesentlichen auf eine Schädigung hitzeempfindlicher Inhaltsstoffe und Kondensationsvorgänge nachMaillard beziehen.
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  • 4
    Publication Date: 1977-07-01
    Print ISSN: 0364-152X
    Electronic ISSN: 1432-1009
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering
    Published by Springer
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  • 5
    Publication Date: 1977-03-01
    Print ISSN: 0236-5731
    Electronic ISSN: 1588-2780
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Published by Springer
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  • 6
    Publication Date: 1977-03-01
    Print ISSN: 0236-5731
    Electronic ISSN: 1588-2780
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Published by Springer
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  • 7
    Publication Date: 1977-03-01
    Print ISSN: 0177-7971
    Electronic ISSN: 1436-5065
    Topics: Geography , Physics
    Published by Springer
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