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  • 1990-1994  (2)
  • 1985-1989  (3)
  • 1955-1959  (1)
  • 1
    Electronic Resource
    Electronic Resource
    PREPLANTING SOIL MOISTURE USING PASSIVE MICROWAVE SENSORS (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 23 (1987), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: : Accurate assessment of preplanting soil moisture conditions is necessary for good agricultural management, and can have a significant influence on crop yield in the Texas Panhandle region. The Texas High Plains Underground Water Conservation District invests considerable time and money in developing a soil moisture deficit map each year in the hopes of achieving optimal use of irrigation water. Microwave sensors are responsive to surface soil moisture and, if used in this application, can provide timely and detailed information on root zone soil moisture. For this reason, an experiment was conducted in 1984 to evaluate the potential of aircraft-mounted passive microwave sensors. Microwave radiometer data were collected over a 2700 km2 area near Lubbock, Texas, with a processed resolution of 0.32 km2. These data were ground registered and converted to estimates of soil moisture using an appropriate model and land cover and soil texture information. Analyses indicate that the system provides an efficient means for mapping variations in soil moisture over large areas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.1987.tb00779.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    One-electron oxidation of methoxylated and hydroxylated indoles by azide. 1. Characterization of the primary indolic radicals (1990)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 94 (1990), S. 6666-6670 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100380a028
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Regiospecificity in the alkylation of ester enolates: synthesis of sterically hindered diarylketene acetals (1987)
    s.l. : American Chemical Society
    The @journal of organic chemistry 52 (1987), S. 2113-2114 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00386a046
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    Paper (German National Licenses)
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  • 4
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    Unknown
    THE HEIKE STORY, by Eiji Yoshikawa (Book Review) (1958)
    Honolulu, etc. : Periodicals Archive Online (PAO)
    Pacific Affairs. 31:3 (1958:Sept.) 308 
    Details
    ISSN: 0030-851X
    Topics: Political Science , Sociology , Economics
    Notes: BOOKS REVIEWED IN THIS NUMBER
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:5082-1958-031-03-000010
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  • 5
    Electronic Resource
    Electronic Resource
    Biosynthesis of S-associated proteins following self- and cross-pollinations in Brassica campestris L. var. ‘T. 15’ (1989)
    Springer
    Sexual plant reproduction 2 (1989), S. 103-108 
    Details
    ISSN: 1432-2145
    Keywords: Brassica ; Self-incompatibility ; S-protein ; Stigma ; Carbon dioxide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Homozygote plants for the (S) self-incompatibility gene have been produced in Brassica campestris L. var. ‘T 15’. Stigmas from plants designated S 1 S 1, S 2 S 2 and S 4 S 4 were extracted and their protein separated on an isoelectric focusing mini-gel. Differences were observed between proteins from stigmas of the three S-homozygous groups: S-genotype specific proteins were determined for S 1 S 1 and S 2 S 2 stigmas that were absent in the self-compatible S 4 S 4 stigmas. Carbon dioxide (CO2), which is known to block the self-incompatibility reaction in Brassica, was applied to [35S]-methionine unpollinated, self- and cross-pollinated stigmas to observe the effect of external CO2 on the synthesis of these S-associated proteins. The results indicate that pollination triggers a dramatic reduction in protein synthesis in general and in the synthesis of S2-associated protein after self-pollination in particular.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00191998
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Aging in the hypothalamo-neurohypophysial-renal system (1993)
    Springer
    Geriatric nephrology and urology 3 (1993), S. 93-106 
    Details
    ISSN: 1573-7306
    Keywords: aging ; hypothalamus ; neurohypophysis ; kidney ; arginine vasopressin ; morphology ; physiology ; review
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract This review examines the age-changes in the hypothalamo-neurohypophysial-renal system (HNRS) and their role in age-associated alterations in the regulation of water homeostasis. A comparative approach has been adopted. The structural characteristics of the magnocellular nuclei are well preserved and there is no evidence for a significant loss of neurons from this region. Studies of the release of anti-diuretic hormone from the neurohypophysis are contradictory. In rodents there is a decline in neuroaxonal transport of hormone from the hypothalamus to the neurohypophysis. It is concluded that for most purposes the ability to respond to acute changes in plasma osmolality are preserved in rodents and humans. There is little evidence to suggest an alteration in the pharmacokinetics of anti-diuretic hormone with advancing age. The renal medullary collecting ducts of rodents, and possibly humans, show a reduced sensitivity to hormonal stimulation. However the complexities of kidney regulation, regarding changes in blood flow, medullary osmotic gradients, and so forth, have barely been investigated. The review indicates the complexity of the age-associated changes that can be found between, and within, species in the HNRS. Whatever the explanation for the differences between species clearly there is a decline in function with time. This results in micro-environmental changes within the older organism that in turn will influence the efficiency and accuracy of other metabolic processes controlling homeostasis and the functions of other systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01509278
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