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  • Articles  (58)
  • 1990-1994
  • 1985-1989
  • 1970-1974  (58)
  • 1950-1954
  • 1935-1939
  • 1973  (29)
  • 1971  (29)
Collection
Source
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  • 1990-1994
  • 1985-1989
  • 1970-1974  (58)
  • 1950-1954
  • 1935-1939
Year
Journal
Topic
  • 1
    Electronic Resource
    Electronic Resource
    Acylation of indoles by Duff reaction and Vilsmeier-Haack formylation and conformation of N-formylindoles (1973)
    s.l. : American Chemical Society
    The @journal of organic chemistry 38 (1973), S. 4002-4004 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00987a009
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  • 2
    Electronic Resource
    Electronic Resource
    Vapor pressure of cesium metaborate (1971)
    s.l. : American Chemical Society
    Journal of chemical & engineering data 16 (1971), S. 336-337 
    Details
    ISSN: 1520-5134
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/je60050a013
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  • 3
    Electronic Resource
    Electronic Resource
    Advances in Hydroscience, Vol. 5, edited by Ven Te Chow. Academic Press, Inc., New York, New York. (1971)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 7 (1971), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.1971.tb05031.x
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  • 4
    Electronic Resource
    Electronic Resource
    SOCIO-ECONOMIC CONSIDERATIONS IN WATER RESOURCES PLANNING (1973)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 9 (1973), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: Historically, the main objective of water resources development has been economic efficiency, and the technique for its evaluation has been benefit-cost analysis. Gradually other objectives have emerged, and these in order of their emergence are regional income redistribution, environmental quality and social well-being. These multi-objectives have given rise to multifarious problems, and have made the planning process much more complex than ever before. The different objectives are not mutually exclusive, and, hence, contributions to one can only be made at the expense of others. Trade-off studies between different objectives are difficult to make. It is suggested that one way to overcome this difficulty could be to design a system to perform optimally in terms of one objective, subject to a specified level of performance of the other, which in effect becomes a constraint. The paper also discusses the pros and cons of the desirability of public participation in our decision-making processes, and the necessity of developing social sciences models to aid water planning and management.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.1973.tb01797.x
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  • 5
    Electronic Resource
    Electronic Resource
    Changes in Endogenous Growth Kegulators in Loblolly Pine Seeds During the Process of Stratification and Germination (1973)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 28 (1973), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The seeds of loblolly pine (Pirns taeda L.) were cold-stratified for 0, 14, 28, 42, and 56 days. Endogenous growth regulators were extracted from these seeds, and also from the germinating and the 28-day warm stratified seeds. Partially purified extracts were separated on chromatographic paper. The chromatograms were cut into 10 equal segments, and these were tested for biological activity using three different btoassays.The results indicated that the unstratified seeds and those stratified up to a period of 28 days contained very little or no growth promoter (GA-like substances), and a relatively high concentration of an inhibitor (presumably abscisic acid), Following 42-day stratification, the promoter concentration gradually increased while the inhibitor level fell almost to zero. A high level of promoter but no inhibitor was detected in germinating seeds.No auxin-like activity was noted in the unstratified seeds. This activity slowly increased up to a period of 28 days and remained at this level for the subsequent stratification periods. However, the activity greatly increased in the germinating seeds.Very little changes in the levels of growth regulators were noted in warm-stratified seeds as compared to the unstrati-fied controls.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1973.tb08601.x
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  • 6
    Electronic Resource
    Electronic Resource
    SOCIOLOGICAL ASPECTS OF WATER DEVELOPMENT (1971)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 7 (1971), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: Decisions to develop water resources systems so far have been primarily taken on the basis of engineering and economic feasibilities. Very rarely, if ever, sociological feasibility has been considered, except in a very broad sense. Planning is for the people, and it should improve the quality of life. Hence, it is argued that water resources decisions ought to be primarily social ones, and that the success or failure of any resource development should not only be judged by its techno-economic excellence but also by its impact on people.Water resources planning process is discussed, and the difficulties associated with the evaluation of sociological feasibility of projects are enumerated. The social consequences of water development projects are traced through planning, construction, operation and management impacts. Finally, it is suggested that the foremost factor in the success of any water management program is the public understanding and acceptance of that program.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.1971.tb05051.x
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  • 7
    Electronic Resource
    Electronic Resource
    The flattening of the X-ray spectrum of sco X-1 at energies beyond 40 keV (1971)
    Springer
    Astrophysics and space science 10 (1971), S. 500-507 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The measurements of the hard X-ray spectrum of Sco X-1 in the energy interval 20–150 keV in three balloon flights from Hyderabad, India are reported. These results show conclusively that the spectrum of Sco X-1 is very flat in the energy interval 40–150 keV and the measured fluxes beyond 60 keV are several orders of magnitude higher than those expected on the basis of an extrapolation of bremsstrahlung spectrum from a thin hot plasma at a temperature corresponding tokT=5 keV, which is applicable for Sco X-1 for energies 〈40 keV. The results are compared with those of other investigators of hard X-rays from Sco X-1, and the implication of the results is briefly discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00649692
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  • 8
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    Unknown
    W. E. Knowles Middleton, Invention of the Meteorological Instruments (Book Review) (1971)
    Detroit, Mich. : Periodicals Archive Online (PAO)
    Technology and Culture. 12:2 (1971:Apr.) 340 
    Details
    ISSN: 0040-165X
    Topics: Technology
    Notes: BOOK REVIEWS
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:5129-1971-012-02-000017
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  • 9
    Electronic Resource
    Electronic Resource
    A new dual frequency moving source-receiverem unit (1971)
    Springer
    Pure and applied geophysics 92 (1971), S. 185-189 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary The paper describes a new portable highly sensitive dual-frequency electromagnetic prospecting unit designed for detailedem surveys based on moving source compensation method. Employing horizontal-horizontal coil profiling, the unit is capable of working on a source-receiver separation of 330 feet (ninety meters) on both frequencies of 500 cycles per sec and 1500 cycles per sec to an accuracy of ±1%. The presence of secondary field characterised by two related components ‘in-phase’ and ‘out-of-phase’ are measured accurately to define the conductor characteristics. An unique provision is made for compensating the phase-shifts in the presence of medium to poor conductors, such as conductive overburden or relatively disseminated ore mineralisation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00875002
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  • 10
    Electronic Resource
    Electronic Resource
    Small molecules as chromotropes in metachromasia (1971)
    Springer
    Histochemistry and cell biology 27 (1971), S. 36-42 
    Details
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Interactions of cationic dye methylene blue with small polyanions like inositol hexasulfate, adenosine-triphosphate, ammonium molybdate, potassium ferro- and ferricyanide have been studied spectrophotometrically and conductometrically to ascertain the chromotropic characters of these polyanions. Results show that while almost all of them bind the dye stoichiometrically, none of them except ammonium molybdate is a chromotrope in the sense in which heparin, chondroitin sulfate etc. are. Inositol hexasulfate induces an intermediate spectra, though not perfectly metachromatic as is the case with inositol hexaphosphate. It is concluded that a chromotrope need not be a macromolecule to induce metachromasia in a dye solution, but the minimum number of charges per polyanion to give it a chromotropic character will vary with the nature of the polyanion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00263366
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