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  • 1995-1999  (53)
  • 1955-1959  (7)
  • 1950-1954  (4)
  • 1
    Electronic Resource
    Electronic Resource
    An integrated PC-based characterization system for optical waveguides (1995)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 66 (1995), S. 2690-2694 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: This paper reports an automatic instrument developed for characterization of optical waveguides. A specially designed waveguide excitation unit offers a flexible platform for measurement of optical waveguide characteristics like number of propagating modes, mode field intensity distribution, the refractive index profiles, waveguide geometry, attenuation, and dispersion. Further, the availability of attachments like filters, polarizers, chopper, intensity profiler, and CCD camera make the instrument flexible enough for a variety of other experiments also. The instrument is PC controlled and assisted by user friendly menu-driven software. A large number of waveguides have been analyzed using the setup. These results are also presented in the paper. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1145611
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Relevance of birth month in respiratory allergy (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 52 (1997), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.1997.tb00984.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Biological, serological and molecular characterization of a cucumber mosaic virus isolate from India (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 45 (1996), S. 0 
    Details
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A. virus causing mosaic and leaf deformation of Physalis minima has been identified as an isolate of cucumber mosaic virus (CMV) on the basis of its transmission by aphids in a non-persistent manner, polyhedral particles of 29 nm diameter, molecular weight of coat protein subunits us 24-5 kDa. serological relationship with a CMV isolate and a tripartite single-stranded RNA genome with a subgenomic RNA4- Furthermore. cDNA representing coat protein gene was synthesized and cloned. Complete nucleotide sequences (890 nt) were obtained which showed a coat protein gene open reading frame of 657 residues. THE nucleotide sequences provided the 218 amino ACID sequences of the coat protein. Nucleotide as well as amino acid sequences revealed more than 90% identity with the CMV subgroup I strains.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3059.1996.tb02891.x
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Changes with time in the potassium content and phyllosilicates in the soil of the Broadbalk continuous wheat experiment at Rothamsted (1997)
    Oxford, UK : Blackwell Publishing Ltd
    European journal of soil science 48 (1997), S. 0 
    Details
    ISSN: 1365-2389
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The transformations of phyllosilicates and the changes in potassium (K) balances caused by long-term cropping have been examined in soil from the 153-year-old Broadbalk experiment. Samples taken between 1856 and 1987 and kept in archive were fractionated for particle size and analysed for changes in mineralogy by X-ray diffraction and changes in total K of the coarser and fine fractions. These were compared with K balances made from records of cropping and fertilizer application. No change in mica due to cropping and K-depletion could be detected. Deep ploughing after 1925 mixed chlorite from the subsoil into the surface soil, but this had weathered by 1987. Potassium balances did not agree with measured changes in total K presumably because of unquantified uptake of K from the subsoil and poorly quantified K leaching.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2389.1997.tb00565.x
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  • 5
    Electronic Resource
    Electronic Resource
    New digital linear filters for Hankel J0 and J1 transforms[ Received ] (1997)
    Oxford, UK : Blackwell Science Ltd
    Geophysical prospecting 45 (1997), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: The numerical evaluation of certain integral transforms is required for the interpretation of some geophysical exploration data. Digital linear filter operators are widely used for carrying out such numerical integration.It is known that the method of Wiener–Hopf minimization of the error can be used to design very efficient, short digital linear filter operators for this purpose. We have found that, with appropriate modifications, this method can also be used to design longer filters. Two filters for the Hankel J0 transform (61-point and 120-point operators), and two for the Hankel J1 transform (47-point and 140-point operators) have been designed. For these transforms, the new filters give much lower errors compared to all other known filters of comparable, or somewhat longer, size. The new filter operators and some results of comparative performance tests with known integral transforms are presented.These filters would find widespread application in many numerical evaluation problems in geophysics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2478.1997.500292.x
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  • 6
    Electronic Resource
    Electronic Resource
    Corrosion behaviour of an indigenous Ag-Sn-Cu cast dental alloy in artificial saliva (1998)
    Oxford, UK : Blackwell Science Ltd
    Journal of oral rehabilitation 25 (1998), S. 0 
    Details
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The corrosion behaviour of an indigenous cast alloy of Ag-Sn-Cu, developed for crown and bridge prostheses, was studied in artificial saliva, with and without the addition of 0·1 m lactic acid, using a potentiostatic technique, and compared with that of the standard cast alloy of Ag-Pd (Ney 76). The values of different parameters such as corrosion potential and corrosion current density were determined for the indigenous alloy of Ag-Sn-Cu and the Ag-Pd alloy. The rate of corrosion of the indigenous alloy was found to be relatively higher than that of the Ag-Pd alloy up to an applied potential of + 400 mV. However, while the indigenous alloy showed a distinct tendency for passivation below + 200 mV at the current level of 0·5 mA/cm2 in the artificial saliva (pH 5·7) at 37 °C, no such tendency for passivation was shown by the Ag-Pd alloy even up to + 400 mV. The tendency for passivation by the indigenous Ag-Sn-Cu alloy, however, was not shown in the artificial saliva in the presence of 0·1 m lactic acid (pH. 2·7) at 37 °C. Minor variation was observed in the corrosion behaviour of the indigenous Ag-Sn-Cu alloys of different grades prepared by alloying elements of varying purity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2842.1998.00217.x
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  • 7
    Electronic Resource
    Electronic Resource
    Transgenic plants expressing autoantigens fed to mice to induce oral immune tolerance (1997)
    [s.l.] : Nature Publishing Group
    Nature medicine 3 (1997), S. 793-796 
    Details
    ISSN: 1546-170X
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] Oral administration of protein can induce antigen-specific immune hyporesponsiveness1. However, the utility of oral tolerance to autoantigens in the treatment of autoimmune diseases may be limited when candidate autoantigens cannot be produced by conventional systems in quantities sufficient for ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nm0797-793
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  • 8
    Electronic Resource
    Electronic Resource
    Nuclear Division in AmŒbÆ and its Bearing on Classification (1951)
    [s.l.] : Nature Publishing Group
    Nature 167 (1951), S. 582-584 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN the past, the order Amoebida Calkins has been divided into families on such characters as the presence of a flagellate stage under certain physiological conditions, their parasitic or free-living nature, the possession of an accessory body called Neben-korper, etc. Such a system is not based on ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/167582a0
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Effect of Moonlight on Insect Activity (1951)
    [s.l.] : Nature Publishing Group
    Nature 167 (1951), S. 853-853 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In spite of the fact that it is generally believed that other methods of catching are also poor at full moon, in the absence of any real evidence for this there was a distinct probability that the low catches in a light trap might be due to a lowered relative luminosity and hence a lowered ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/167853a0
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  • 10
    Electronic Resource
    Electronic Resource
    Occurrence and Nature of an Amœba Excystment Factor produced by Aerobacter sp. (1956)
    [s.l.] : Nature Publishing Group
    Nature 177 (1956), S. 621-622 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Crump1 showed that excystment in Amoeba Z (Didascalus ihorntoni ; Singh6) took place without the presence of bacteria, while Amoeba 4 (Schizo-pyrenus russelli; Singh6) excysted only in the presence of certain bacteria (Aerobacter sp. and 4036). She suggested that the two species of bacteria produce ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/177621a0
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