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  • Articles  (53)
  • Springer  (53)
  • 1975-1979  (15)
  • 1970-1974  (21)
  • 1920-1924  (1)
  • 1905-1909  (16)
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  • Articles  (53)
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  • 1
    Electronic Resource
    Electronic Resource
    The chronic toxicity of hexamethylphosphoramide in rats (1973)
    Springer
    Bulletin of environmental contamination and toxicology 10 (1973), S. 225-226 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01684548
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  • 2
    Electronic Resource
    Electronic Resource
    The gregarisation pheromone of locusts (1970)
    Springer
    Chromosoma 29 (1970), S. 462-473 
    Details
    ISSN: 1432-0886
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Swarming locusts show three physical criteria, i.e. the phase changes of melanisation of the nymphal stages or hoppers, of the proportions of certain body parts (morphometric ratios), and increased genetic recombination (meiotic chiasma frequencies) in the adult. The control of these changes, initiated by aggregation into swarms, i.e. gregarisation, seems to be vested in a pheromone which is produced by all hoppers in both the solitaria and gregaria phases, also by hoppers of the albino strain. Such a pheromone can be extracted from the locust room air and from the locust, these extracts showing high activity in bioassays, primarily in increased chiasma frequencies but also in hopper colour. The extract in risella oil is more efficient than that in petroleum ether and can be distilled to yield an active distillate. The pheromone is secreted in the faeces of hoppers but not of adults. There is evidence in faeces bioassays that all three physical criteria are affected; the pheromone may be called locustone. It is manufactured or secreted in a specific section of the alimentary canal, i.e. the crop. Reception is not through the antennae but through the stigmata. Preliminary chemical analysis of a risella oil air extract distilled into various other solvents showed the presence of a relatively simple saturated aliphatic chain with a carbonyl function, perhaps a ketone or an ester.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00281928
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  • 3
    Electronic Resource
    Electronic Resource
    Observations of vertical atmospheric structure in a deep mountain valley (1977)
    Springer
    Meteorology and atmospheric physics 26 (1977), S. 39-50 
    Details
    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
    URL: http://dx.doi.org/10.1007/BF02246534
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  • 4
    Electronic Resource
    Electronic Resource
    Die Wirkungen der totalen Leberexstirpation (1924)
    Springer
    Reviews of physiology, biochemistry and pharmacology 23 (1924), S. 212-273 
    Details
    ISSN: 1617-5786
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Zusammenfassung Kurz zusammengefasst sind die wichtigsten, hier niedergelegten Tatsachen folgende: Es wurde eine Methode für die totale Entfernung der Leber bei Hunden ausgebildet, welche frei von den meisten Fehlerquellen ist, die früheren Exstirpationsmethoden des Organs bei Säugetieren anhaften. Es wurde gefunden, dass eine geeignete Einführung von Glukose bei derart operierten Hunden das Leben viele Stunden nach Verlust des gesamten Lebergewebes erhält. Von den vielen an hepatektomierten Tieren gemachten Beobachtungen möchten wir hervorheben, 1. dass die Leber zur Erhaltung des Blutzuckerspiegels absolut wesentlich ist; 2. dass die Leber der wichtigste Faktor, wenn nicht der einzige, bei dem Prozess der Desamidierung und der Harnstoffbildung ist, und 3. dass Bilirubin auch ohne Mitwirkung der Leber gebildet werden kann.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01924578
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  • 5
    Electronic Resource
    Electronic Resource
    Changes in flood-plain vegetation and land use along the Missouri River from 1826 to 1972 (1977)
    Springer
    Environmental management 1 (1977), S. 343-348 
    Details
    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
    URL: http://dx.doi.org/10.1007/BF01865861
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  • 6
    Electronic Resource
    Electronic Resource
    The policy implementation process (1973)
    Springer
    Policy sciences 4 (1973), S. 197-209 
    Details
    ISSN: 1573-0891
    Source: Springer Online Journal Archives 1860-2000
    Topics: Political Science , Economics
    Notes: Abstract There is an implicit assumption in most policy studies that once a policy has been formulated the policy will be implemented. This assumption is invalid for policies formulated in many Third World nations and for types of policies in Western societies. Third World governments tend to formulate broad, sweeping policies, and governmental bureaucracies often lack the capacity for implementation. Interest groups, opposition parties, and affected individuals and groups often attempt to influence the implementation of policy rather than the formulation of policy. A model of the policy implementation process is presented. Policy implementation is seen as a tension generating force in society. Tensions are generated between and within four components of the implementing process: idealized policy, implementing organization, target group, and environmental factors. The tensions result in transaction patterns which may or may not match the expectations of outcome of the policy formulators. The transaction patterns may become crystallized into institutions. Both the transaction patterns and the institutions may generate tensions which, by feedback to the policymakers and implementors, may support or reject further implementation of the policy. By application of the model, policymakers can attempt to minimize disruptive tensions which can result in the failure of policy outcomes to match policy expectations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01405732
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  • 7
    Electronic Resource
    Electronic Resource
    Policy roles: an analysis of policy formulators and policy implementors (1973)
    Springer
    Policy sciences 4 (1973), S. 297-307 
    Details
    ISSN: 1573-0891
    Source: Springer Online Journal Archives 1860-2000
    Topics: Political Science , Economics
    Notes: Abstract This paper presents an empirical analysis of individuals in policy formulating and policy implementing roles. Data for the comparison are from interviews with a random sample of 119 New Zealand middle-level public administrators from 27 government departments. The individuals in the policy formulating roles were slightly younger; however, those in the formulating and implementing roles varied little from each other in terms of social background, educational attainment and career patterns. Few differences were evident in regard to job satisfaction, decisional authority, and hierarchical relations. Significant differences between policy formulators and policy implementors were discovered in terms of work load, career aspirations, and awareness of political influences in governmental policymaking. From the evidence of this study, the New Zealand administrative system does not allocate policy formulating roles to individuals different from those who implement policies. Differences between formulators and implementors in the New Zealand system appear to stem from the nature of the work of the two policy roles.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01435126
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  • 8
    Electronic Resource
    Electronic Resource
    Complementation of genetic disease: A velocity sedimentation procedure for the enrichment of heterokaryons (1979)
    Springer
    Somatic cell and molecular genetics 5 (1979), S. 1013-1029 
    Details
    ISSN: 1572-9931
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Methodology is described to enrich for heterokaryons after mammalian cell fusion. A heterogeneous cell mixture can be separated on a Sta-Put apparatus into fractions of uniform size cells by sedimentation through a 1% bovine serum albumin-5% Ficoll gradient. Unfused RAG and LM/TK− cells, differing by 10% in diameter, have been sorted by size; following fusion, larger and faster sedimenting cells were shown to be hybrids. This methodology can be utilized in genetic complementation studies of human genetic diseases where selection procedures for proliferating hybrids do not exist. When fibroblasts from individuals with Tay-Sachs disease [deficient in hexosaminidase A (HEX A−)] and Sandhoff-Jatzkewitz disease (HEX A− and HEX B−) are fused, HEX A is generated, demonstrating complementation of two different mutations. After Sta-Put fractionation, the HEX A complementation product was associated with the faster sedimenting multinuclear cells and not with the mononuclear parental cells. This methodology will facilitate detection of genetic differences in fibroblasts from related inherited disorders.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01542657
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  • 9
    Electronic Resource
    Electronic Resource
    Spectrophotometry (0.3 to 1.1µ) of visited and proposed apollo lunar landing sites (1972)
    Springer
    Earth, moon and planets 5 (1972), S. 52-89 
    Details
    ISSN: 1573-0794
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00562105
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  • 10
    Electronic Resource
    Electronic Resource
    Progress in remote optical analysis of lunar surface composition (1973)
    Springer
    Earth, moon and planets 7 (1973), S. 453-474 
    Details
    ISSN: 1573-0794
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00564646
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