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  • Springer  (81)
  • American Meteorological Society  (5)
  • 1995-1999  (62)
  • 1910-1914  (7)
  • 1905-1909  (16)
  • 1900-1904  (1)
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Keywords
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Multivariate nonhomogeneous refinement equations (1999)
    Springer
    The journal of Fourier analysis and applications 5 (1999), S. 589-597 
    Details
    ISSN: 1531-5851
    Keywords: 42C15 ; 39B99 ; multivariate ; nonhomogeneous ; refinement
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract We give necessary and sufficient conditions for the existence and uniqueness of compactly supported distribution solutionsf=(f 1,...,f r)T of nonhomogeneous refinement equations of the form $$f(x) = h(x) + \sum\limits_{\alpha \in A} {c_\alpha f(2x - \alpha )(x \in R^s )} $$ , where h=(h1,...,hr)Tis a compactly supported vector-valued multivariate distribution, A⊂Z+ s has compact support, and the coefficientsc α are real-valued r×r matrices. In particular, we find a finite dimensional matrix B, constructed from the coefficientsc α of the equation (I−B)q=p, where the vectorp depends on h. Our proofs proceed in the time domain and allow us to represent each solution regardless of the spectral radius of P(0):=2−s∑c α , which has been a difficulty in previous investigations of this nature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01257193
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  • 2
    Electronic Resource
    Electronic Resource
    Cooking Oil: A Home Fire Hazard in Alberta, Canada (1997)
    Springer
    Fire technology 33 (1997), S. 140-166 
    Details
    ISSN: 1572-8099
    Keywords: Canada ; Alberta ; cooking equipment ; cooking oil ; fire injuries ; smoke point ; flash point ; fire hazard ; fire statistics ; prevention
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying
    Notes: Abstract This paper begins with a brief statistical analysis to establish the significant contribution of cooking equipment fires to fire losses and injuries in Canadian homes. Due to lack of comprehensive fire loss data for Canadian homes, further analysis is focused on Alberta data. The most frequent ignition scenario, based on a top-down analysis of Alberta home fires, was the ignition of overheated cooking oil in pots, deep-fat fryers, or pans heated on stove tops. These fires also accounted for the majority of home fire injuries. Fire characteristics of cooking oils, which point to the importance of maintaining oil temperatures below their flash points, and thermostatically controlled deep-fat fryers as the best available solution to the problem are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1015395001403
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  • 3
    Electronic Resource
    Electronic Resource
    Komplexe Zusammenhänge zwischen Eigenschaften und Strukturparametern von Elektrodengläsern (1995)
    Springer
    Monatshefte für Chemie 126 (1995), S. 839-850 
    Details
    ISSN: 1434-4475
    Keywords: Electrode glasses ; Principal Component Analysis ; Cluster analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Cluster Analysis has been shown to be partially suitable for the classification of glasses. The expansion of the clusters on theSeger's diagram allows an investigation of the influence of the different glass components. Variation of the SiO2 content results in a smaller change of properties than variation of the Na2O/RO relationship. Principal Component Analysis is convenient for showing correlations between the composition of the examined glasses, the glass structure parameters, and the different electrode properties. Properties of electrodes are mostly influenced by the content of Na2O and by the kind of the divalent cations. In contrast thereto structure parameters become basically determined by the content of SiO2 and RO. The field strength of the divalent cations plays the decisive roll again.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00811003
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  • 4
    Electronic Resource
    Electronic Resource
    Effect of Size upon Metal Content of Lobster (Thenus orientalis) from the Kuwait Marine Environment (1998)
    Springer
    Bulletin of environmental contamination and toxicology 61 (1998), S. 175-181 
    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/s001289900745
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  • 5
    Electronic Resource
    Electronic Resource
    Enhanced Evolvability in Immunoglobulin V Genes Under Somatic Hypermutation (1999)
    Springer
    Journal of molecular evolution 49 (1999), S. 23-26 
    Details
    ISSN: 1432-1432
    Keywords: Key words: Genome evolution — Adaptability — Somatic hypermutation — Affinity maturation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract. Darwinian theory requires that mutations be produced in a nonanticipatory manner; it is nonetheless consistent to suggest that mutations that have repeatedly led to nonviable phenotypes would be introduced less frequently than others—if under appropriate genetic control. Immunoglobulins produced during infection acquire point mutations that are subsequently selected for improved binding to the eliciting antigen. We and others have speculated that an enhancement of mutability in the complementarity-determining regions (CDR; where mutations have a greater chance of being advantageous) and/or decrement of mutability in the framework regions (FR; where mutations are more likely to be lethal) may be accomplished by differential codon usage in concert with the known sequence specificity of the hypermutation mechanism. We have examined 115 nonproductively rearranged human Ig sequences. The mutation patterns in these unexpressed genes are unselected and therefore directly reflect inherent mutation biases. Using a χ2 test, we have shown that the number of mutations in the CDRs is significantly higher than the number of mutations found in the FRs, providing direct evidence for the hypothesis that mutations are preferentially targeted into the CDRs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00006530
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  • 6
    Electronic Resource
    Electronic Resource
    A restructured fusion energy sciences program: Advisory report (1996)
    Springer
    Journal of fusion energy 15 (1996), S. 183-205 
    Details
    ISSN: 1572-9591
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02266933
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  • 7
    Electronic Resource
    Electronic Resource
    Selenium Bioaccumulation by the Water Boatman Trichocorixa reticulata (Guerin-Meneville) (1999)
    Springer
    Archives of environmental contamination and toxicology 36 (1999), S. 295-300 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract. The input of selenium from subsurface agricultural drainage into surface water systems can result in the accumulation of toxic concentrations of selenium in aquatic food chains. Elevated selenium concentrations in aquatic systems is a significant environmental problem in many areas of the United States. A laboratory investigation was conducted to determine the dominant route of selenium bioaccumulation by the corixid Trichocorixa reticulata, an important food chain organism. The roles of waterborne and foodborne exposure in selenium bioaccumulation were examined using 48-h bioassays. Waterborne selenium concentrations ranged from 0 to 1,000 μg Se/L as selenate. A mixture of two species of blue-green algae cultured in media with selenium concentrations ranging from 0 to 1,000 μg Se/L as selenate was used as a corixid diet in the foodborne treatments. Corixids exposed to waterborne selenate did not accumulate selenium above control concentrations. Corixids fed algae exposed to ≥100 μg Se/L as selenate had significantly higher selenium concentrations than control organisms. These data suggest that corixids may be effectively isolated from the water and selenium accumulation is solely through dietary exposure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002449900474
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  • 8
    Electronic Resource
    Electronic Resource
    Characterization of rice α-amylase isozymes expressed by Saccharomyces cerevisiae (1995)
    Springer
    Applied microbiology and biotechnology 43 (1995), S. 1050-1055 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Two rice α-amylase isozymes, AmylA and Amy3D, were produced by secretion from genetically engineered strains of Saccharomyces cerevisiae. They have distinct differences in enzymatic characteristics that can be related to the physiology of the germinating rice seed. The rice isozymes were purified with immunoaffinity chromatography. The pH optima for amy3D (pH optimum 5.5) and Amy1A (pH optimum 4.2) correlate with the pH of the endosperm tissue at the times in rice seedling development when these isozymes are produced. Amy3D showed 10–14 times higher reactivity to oligosaccharides than Amy1A. Amy1A, on the other hand, showed higher reactivity to soluble starch and starch granules than Amy3D. These results suggest that the isozyme Amy3D, which is expressed at an early stage of germination, produces sugars from soluble starch during the early stage of seed germination and that the isozyme Amy1A works to initiate hydrolysis of the starch granules.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00166924
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  • 9
    Electronic Resource
    Electronic Resource
    Wind-driven variability of the Amazon River plume on the continental shelf during the peak outflow season (1995)
    Springer
    Geo-marine letters 15 (1995), S. 179-184 
    Details
    ISSN: 1432-1157
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The hypothesis that variations of the Amazon plume are forced primarily by wind is further explored through a series of simplified numerical model simulations. The wind's role in the change in plume structure and the nature of this change are investigated for two events: a shift in wind direction from westward to southeastward and a reduction in magnitude of the westward wind speed. Under winds with a southeastward component, the plume is confined to below 5°N; this simulation represents a rare but illustrative event showing how the balance of forces is quickly adjusted under changing winds. The freshest portions of the plume expand eastward, but are confined near the river mouth, as observed. The cross-shelf and alongshelf dynamic balances are similar in magnitude to those with westward wind stress, but the balance between the equatorial jet and buoyancy-driven cross-shelf flow is altered, controlling a new along-shelf position of the front. During wind-relaxation events, the plume widens near the mouth as a result of strong, eastward cross-shelf velocities associated with an equatorial Kelvin wave.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01204461
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  • 10
    Electronic Resource
    Electronic Resource
    15N CP/MAS NMR as an instrument in structure investigations of organosilicon polymers (1999)
    Springer
    Fresenius' journal of analytical chemistry 363 (1999), S. 185-188 
    Details
    ISSN: 1432-1130
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract 15N solid state NMR without enrichment is rarely used because of the low sensitivity and low natural abundance of this nucleus. As demonstrated on different nitrogen-containing polysilanes and polysilazanes, it can be shown that with the CP/MAS technique spectra can be obtained in good quality and within acceptable measuring time. Three main different nitrogen sites – NSi3, NSi2H and NSiH2– can be observed as well as changes in the intensities of these sites with reaction and tempering conditions. Thus the spectra give valuable additional information for a better understanding of the structures and their changes within the investigated systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002160051168
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