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  • 1
    Electronic Resource
    Electronic Resource
    A fast unbiased comparison of protein structures by means of the Needleman-Wunsch algorithm (1991)
    Springer
    Journal of molecular evolution 32 (1991), S. 340-354 
    Details
    ISSN: 1432-1432
    Keywords: Unbiased comparison of three-dimensional structures of proteins ; Superposition ; Needleman ; Wunsch algorithm ; Initial alignment ; Iterative improvement ; Serine proteases ; Cytochromes ; Cooper-binding proteins ; Lysozymes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A fast dynamic programming algorithm for the spatial superposition of protein structure without prior knowledge of an initial alignment has been developed. The program was applied to serine proteases, hemoglobins, cytochromes C, small copper-binding proteins, and lysozymes. In most cases the existing structural homology could be detected in a completely unbiased way. The results of the method presented are in general agreement with other studies. Applying our method, the different alignment results obtained by other authors for serine proteases and cytochromes C can be classified in terms of different alignment parameters such as gap penalties or cut-off length. Limitations of the method are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02102193
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  • 2
    Electronic Resource
    Electronic Resource
    The Early Years: Some Comments on the Origins and Concepts of Cybernetics (1994)
    Bingley : Emerald
    Kybernetes 23 (1994), S. 23-27 
    Details
    ISSN: 0368-492X
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Computer Science
    Notes: Examines the role and importance of the ideas of Norbert Wiener, the Father of cybernetics in the context of the Information Revolution. Sketches ideas underlying the origins of cybernetics and outlines the aims of this interdisciplinary science. Analyses criticisms and objections in some detail and draws conclusions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/03684929410795102
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  • 3
    Electronic Resource
    Electronic Resource
    New crystal forms of a μ-class glutathione S-transferase from rat liver (1994)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 50 (1994), S. 219-224 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Two new crystal forms of isoenzyme 3-3 of rat liver glutathione S-transferase (GST 3-3) have been obtained. They were grown under essentially the same crystallization conditions as those reported for the C2 crystal form [Fu, Rose, Chung, Tam & Wang (1991). Acta Cryst. B47, 813–814]. The new crystals belong to space group P21 with one form having cell dimensions a = 101.6, b = 69.5, c = 81.4 Å, and β = 113.6°, and the other form having cell parameters a = 97.4, b = 81.1, c = 69.4 Å and β = 109.2°. These new crystals diffract to at least 2.5 Å, resolution. The molecular packing arrangements in these P21 crystals have been found by molecular replacement studies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0907444993009370
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  • 4
    Electronic Resource
    Electronic Resource
    Building and refining a knowledge base for synthetic organic chemistry via the methodology of inductive and deductive machine learning (1990)
    s.l. : American Chemical Society
    Journal of chemical information and modeling 30 (1990), S. 492-504 
    Details
    ISSN: 1520-5142
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ci00068a023
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  • 5
    Electronic Resource
    Electronic Resource
    Preferred sources of information on AIDS among high school students from selected schools in Zimbabwe (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of advanced nursing 17 (1992), S. 0 
    Details
    ISSN: 1365-2648
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Following various national HIV and AIDS awareness campaign activities under the auspices of the Ministries of Health and Education, Zimbabwe, an AIDS KABP survey was undertaken The study sample comprised 478 high school students randomly selected and stratified to represent sex and Forms 1 through to 6 The study instrument was a 31-item questionnaire designed to assess the students’ knowledge, attitudes, practices and sources of information in relation to HIV syndrome This report reviews only that part of the study dealing with sources of information Newspapers, television, radio and magazine were the most frequently cited sources of first information Classmates were Cited by 20% to over 30% of respondents as first sources of information Authority figures like health workers, parents, teachers, the Church did not emerge as significant sources of first information Doctors were identified as the most preferred source of information m future Sources of first information were related to age, form level, sex and location of school attended There were notable differences between boarding school respondents and day scholars No regional differences were noted
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2648.1992.tb01936.x
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  • 6
    Electronic Resource
    Electronic Resource
    A possible cause of strawberry June Yellows–a degenerative, non-infectious condition (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 41 (1992), S. 0 
    Details
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3059.1992.tb02434.x
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  • 7
    Electronic Resource
    Electronic Resource
    HORACE: An automatic system for the hierarchical classification of chemical reactions (1994)
    s.l. : American Chemical Society
    Journal of chemical information and modeling 34 (1994), S. 74-90 
    Details
    ISSN: 1520-5142
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ci00017a010
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  • 8
    Electronic Resource
    Electronic Resource
    Fatal electromigration voids in narrow aluminum-copper interconnect (1992)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 61 (1992), S. 2170-2172 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The shape and crystallography of fatal electromigration voids in near-bamboo Al-2 wt % Cu thin-film conductors were studied with transmission electron microscopy. Fatal voids were typically slit shaped and intragranular. Voids formed with {111} faces and with the slit length parallel to a 〈022〉 direction. The void faces were inclined and resided in grains of varying surface crystallographic orientation. Void morphology was independent of initial precipitate condition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.108284
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  • 9
    Electronic Resource
    Electronic Resource
    Continuous fabrication of high-temperature superconductor coated metal fiber and multifilamentary wire (1991)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 58 (1991), S. 534-536 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Long superconductor fibers have been continuously produced by electrophoretically depositing REBa2Cu3O7−x (where RE=Y or a selected rare-earth element) powder onto a metal substrate fiber and sintering, then electrophoretically depositing silver and sintering. After collecting the coated fiber on a take-up spool, the entire spool is batch-oxygenated to form the 90 K superconducting phase. Multiple fibers are then continuously unspooled and soldered into a copper channel to form the final multifilamentary high-temperature superconductor wire. Superconducting fibers over 1000 m long and multifilamentary wire 70 m long have been produced.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.104578
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  • 10
    Electronic Resource
    Electronic Resource
    Major river systems of central and southern Britain during the Early and Middle Pleistocene (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Terra nova 6 (1994), S. 0 
    Details
    ISSN: 1365-3121
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Central and southern Britain was drained by two main river systems during the larger part of the Early and Middle Pleistocene: the Thames and Bytham rivers. Evidence for these rivers and their Quaternary history is represented by their sediments (the Kesgrave and Bytham Sands and Gravels, respectively), the geomorphological position of the sediments, biostratigraphy and amino acid geochronology. Evidence from the earlier parts of the Early Pleistocene (Tiglian C4b and earlier) indicates low-energy river systems and marine conditions over much of East Anglia. For most of the Early Pleistocene (Tiglian C4c to the Cromerian Complex) the ancestral Thames was the main river with, at its maximal extent, a catchment that extended into Wales, and across East Anglia and what is now the North Sea, to join the ancestral Rhine. During this period, glaciers in the uplands of Wales and periglacial mass movement elsewhere supplied material to the catchment and it was at this time that the bulk of the sorted Quaternary ssediments of lowland Britain were deposited. The Bytham river system has no successor because the landscape now in existence has been fundamentally altered by glacial erosion. This catchment drained most of Midland England and joined the Thames in central East Anglia. Initially, the Bytham river was a tributary of the Thames, but over time it extended its catchment and at the beginning of the ‘Cromerian Complex’it became the main river of southern Britain. With the Anglian Glaciation (01 Stage 121, the Bytham river was destroyed and the Thames was diverted to its present route through London.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3121.1994.tb00887.x
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