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  • 1
    Electronic Resource
    Electronic Resource
    Grain Molds in the Tropics: Problems and Importance (1983)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Phytopathology 21 (1983), S. 153-178 
    Details
    ISSN: 0066-4286
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.py.21.090183.001101
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  • 2
    Electronic Resource
    Electronic Resource
    Effects of pollination on smut development in pearl millet (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 32 (1983), S. 0 
    Details
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: In field and screenhouse experiments, pollination of inflorescences of three pearl millet F1 hybrids and two male-sterile (ms) lines with fresh viable pollen 5–8 days after inoculation with a Tolyposporium penicillariae sporidial suspension reduced smut severities significantly compared with inoculated, non-pollinated control plants. Smut development was not significantly reduced in a ms line following pollination of inoculated inflorescences with pollen of low viability. The implications of these findings in developing an effective screening technique for smut resistance and in controlling this disease in pearl millet are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3059.1983.tb01312.x
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  • 3
    Electronic Resource
    Electronic Resource
    Potential changes in weed floras associated with reduced-cultivation Systems for cereal production in temperate regions (1981)
    Oxford, UK : Blackwell Publishing Ltd
    Weed research 21 (1981), S. 0 
    Details
    ISSN: 1365-3180
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The effects of reduced-cultivation Systems on weeds in cereals are reviewed. Increasing dependence of these Systems upon Chemical weed control together with changes in the soil physical environment are expected to modify existing weed floras. Annual-grass weeds are likely to remain a problem with the use of minimal cultivations, particularly when early drilling is practised, while hitherto unimportant species may become more prevalent, e.g. Bromus spp. Furthermore, reduced cultivations may encourage the establishment of wind-disseminated species. However, annual dicotyledonous species characteristic of arable land are expected to continue to decline.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3180.1981.tb00102.x
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  • 4
    Electronic Resource
    Electronic Resource
    A COMPARISON OF DIFFERENT PREPARATIONS IF BOVINE BRAIN CALMODULIN (1980)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 356 (1980), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1980.tb29636.x
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  • 5
    Electronic Resource
    Electronic Resource
    Sufficient conditions for Nash equilibria inN-person games over reflexive Banach spaces (1980)
    Springer
    Journal of optimization theory and applications 30 (1980), S. 383-394 
    Details
    ISSN: 1573-2878
    Keywords: N-person games ; Nash equilibrium ; reflexive Banach spaces ; linear-quadratic differential games
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract Sufficient conditions are obtained for the existence of Nash equilibrium points inN-person games when the strategy sets are closed, convex subsets of reflexive Banach spaces. These conditions require that each player's cost functional is convex in that player's strategy, weakly continuous in the strategies of the other players, weakly lower semicontinuous in all strategies, and furthermore satisfies a coercivity condition if any of the strategy sets is unbounded. The result is applied to a class of linear-quadratic differential games with no information, to prove that equilibrium points exist when the duration of these games is sufficiently small.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00935494
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  • 6
    Electronic Resource
    Electronic Resource
    Mixed strategy solutions forN-person quadratic games (1980)
    Springer
    Journal of optimization theory and applications 30 (1980), S. 569-582 
    Details
    ISSN: 1573-2878
    Keywords: N-person quadratic games ; mixed strategies ; ∈-equilibrium points ; linear-quadratic differential games
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract Mixed strategy ∈-equilibrium points are given forN-person games with cost functions consisting of quadratic, bilinear, and linear terms and strategy spaces consisting of closed balls in Hilbert spaces. The results are applied to linear-quadratic differential games with no information and quadratic integral constraints on the control functions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01686721
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  • 7
    Electronic Resource
    Electronic Resource
    Structural information from NMR secondary chemical shifts of peptide α C−H protons in proteins (1983)
    Springer
    Bioscience reports 3 (1983), S. 443-452 
    Details
    ISSN: 1573-4935
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The secondary chemical shift experienced by the1H-NMR resonances of the α C−H protons in proteins can be correlated with their backbone torsional angles ψ, which dictate the orientation of the α C−H proton to the adjacent carbonyl group. It is shown that α C−H protons present in β-sheet regions experience downfield secondary shifts , whereas those in α-helix regions experience upfield secondary shifts. The predictive use of this correlation in assignment studies is illustrated for the calcium-binding protein paravalbumin, for which a crystal structure is available, and troponin C, for which no crystallographic data are available.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01121955
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  • 8
    Electronic Resource
    Electronic Resource
    Some aspects of curing novolac with hexamethylenetetramine (1982)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 20 (1982), S. 311-318 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Curing novolac with hexamethylenetetramine in closed molds at T = 190°C was studied. Cured products were examined with the following experimental techniques: sol fraction determination, % N fixed in sol and gel fractions, and IR spectra. The fraction of fixed N decreased from 1 to 0.5 when the hexa mass fraction was increased from 0 to 0.3 in the mixture with novolacs. A segregation of the fixed N in the sol fraction was observed. Azomethine derivatives were present, their amounts increasing with the hexa mass fraction. Curing was described by a reaction scheme similar to the one derived from studies with model phenols. A simplified scheme was adequate for the prediction of the minimum hexa amount necessary to gel the system at full conversion.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1982.170200205
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  • 9
    Electronic Resource
    Electronic Resource
    On the curing kinetics of unsaturated polyesters with styrene (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 28 (1983), S. 485-499 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The curing kinetics of a general purpose unsaturated polyester (UP) with styrene was studied by differential scanning calorimetry and dielectric capacitance measurements. Benzoyl peroxide was used as initiator. Results showed that there is a complete change in the phenomenological kinetics, in different temperature ranges. At low temperatures (70-90°C), the rate went through a maximum and then showed a first-order decay. At high temperatures (100-160°C) a second-order kinetics was suitable for all the conversion range. At T 〉 160°C another mechanism took place when the initiator amount was less than a critical value. From the changes in the dielectric capacitance it was inferred that the conversion rate of UP unsaturations followed a first-order decay after a certain conversion, with an activation energy close to values reported for diffusion of UP radicals. Possible free radical mechanisms accounting for experimental observations are discussed.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1983.070280205
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  • 10
    Electronic Resource
    Electronic Resource
    The curing of novolacs with paraformaldehyde (1982)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 27 (1982), S. 893-901 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The curing of novolacs with paraformaldehyde is analyzed with several experimental techniques (DSC, IR, sol fraction) as well as statistical arguments. Results for typical novolacs show that a maximum crosslinking density is attained at a mass ratio mP/mN close to 0.20. However, at mP/mN greater than 0.10, hemiformals appear in the cured product, increasing the amount of extractable formaldehyde. The heat of reaction increases linearly from mP/mN = 0 to 0.15, attaining a maximum value of -ΔH = 98 cal/g novolac at mP/mN ∼ 0.20. The curing kinetics follows an overall second-order law with an activation energy E = 32.5 kcal/mol and a preexponential factor A = 1.1 × 1015 min-1 (both for mP/mN 〉 0.1).
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1982.070270309
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