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  • 11
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of chemical & engineering data 28 (1983), S. 8-10 
    ISSN: 1520-5134
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 12
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 9 (1997), S. 1674-1695 
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A two-dimensional model consisting of continuity, momentum, species, and energy balances is considered to analyze the convective patterns that arise due to exothermic reactions occurring in a porous medium. First, the one-dimensional conduction states of the system are classified using singularity theory and the shooting technique. It is observed that there can be either one or three conduction states when the reacting fluid is a gas. Next, we use linear stability analysis to determine the boundary of the parameter values at which the conduction state loses stability leading to convective flows. Pure and mixed-mode convective solutions are then analyzed using local bifurcation theory. The formulas to evaluate the coefficients appearing in the amplitude equations are developed and used to obtain the classification (phase) diagram of the convective flows in the parameter space. The classification is presented in the unique conduction solution region in the presence and absence of mode interactions. The phase diagrams are used to identify the region of parameter values where convection has a detrimental effect on the stability of the system. It is found that the Lewis number (Le), which represents the ratio of thermal to mass diffusivity, has a profound influence on the stability boundaries. For Le〉1, the convective solutions may bifurcate subcritically and introduce an ignition point. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 13
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    International journal of dermatology 37 (1998), S. 0 
    ISSN: 1365-4632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Patients were recruited from 1 December 1994 until 31 August 1995. Those presenting with tinea cruris/corporis received 200 mg of itraconazole every day for 7 days, whereas patients presenting with tinea pedis/manus were treated with 200 mg twice a day for 7 days. Those eligible were men and women at least 18 years of age, with a clinically diagnosed dermatophytosis, confirmed by KOH examination and culture. Pregnant or nursing patients and those who did not use adequate birth control methods were excluded. Patients with a known history of chronic liver disease or other concomitant serious disease were also excluded. Patients who had received any oral antifungal or corticosteroid therapy within 30 days before enrollment or any topical antifungal or corticosteroid treatment within a week before enrollment were not eligible.Clinical and mycologic (KOH and culture) evaluation was carried out at baseline, at completion of therapy (day 7) and at the end of follow-up (day 28 for tinea cruris/corporis and day 35 for tinea pedis/manus). The investigator evaluated the following clinical symptoms at each visit: desquamation, erythema, infiltration, pruritus, exudation, maceration, vesiculation, and pustules. Clinical results were rated as: healed, markedly improved, considerable residual lesions, not changed, or worse. The categories healed and markedly improved were considered as responders.All mycology was performed centrally at the Department of Microbiology, University of Malaya.
    Type of Medium: Electronic Resource
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  • 14
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 308 (1984), S. 396-397 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - The merit of India's science has been the subject of heated discussion in your correspondence columns. It is a healthy sign that such issues are raised now. A few years ago this would not have happened. Something good will eventually come of the polemics and accusations. The focus must, ...
    Type of Medium: Electronic Resource
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  • 15
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 292 (1981), S. 274-274 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] BENESCH AND BENESCH1 recently proposed an interesting hypothesis concerning the mechanism of action of various hydrophobic molecules which inhibit the gelation of sickle cell haemoglobin (HbS). They suggested that this hydrophobic class of sickling inhibitors may act on water structure rather than ...
    Type of Medium: Electronic Resource
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  • 16
    Electronic Resource
    Electronic Resource
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 39 (1983), S. 1630-1632 
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 17
    Electronic Resource
    Electronic Resource
    Springer
    Journal of chemical crystallography 25 (1995), S. 743-745 
    ISSN: 1572-8854
    Keywords: Lithium binder ; X-ray structure ; 1,3-bis(8-quinolyloxy)propane
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The X-ray crystal structure of 1,3-bis(8-quinolyloxy)propane, monoclinic, space group C2/c(No. 15),a=25.367(4);b=4.923(5) andc=14.418(4)Å; β=111.18(2)o;Z=4 has been determined by direct methods. A final least squares refinement based on 812 observed reflections (I〉2δ(I)) gave finalR values ofR f=0.043 andR w=0.034.
    Type of Medium: Electronic Resource
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  • 18
    Electronic Resource
    Electronic Resource
    Springer
    Catalysis letters 35 (1995), S. 361-372 
    ISSN: 1572-879X
    Keywords: nitrous oxide decomposition ; lanthanum-strontium-copper oxide ; copper mixed valency ; anion vacancies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Catalytic decomposition of nitrous oxide (N2O) to N2 and O2 has been studied on a series of solid oxide solutions of La, Sr and Cu according to the nominal formula La2−x Sr x CuO4 (0⩽x⩽1). The reaction has been carried out in a fixed bed, glass static reactor with gas-recirculation facility. The kinetics of decomposition has been studied in the temperature range 250–480
    Type of Medium: Electronic Resource
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  • 19
    Electronic Resource
    Electronic Resource
    Springer
    Algorithmica 22 (1998), S. 235-249 
    ISSN: 1432-0541
    Keywords: Key words. Dynamic algorithm, Graph algorithm, Shortest path, Minimum-cost path, Planar graph.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Notes: Abstract. In this paper we give a fully dynamic approximation scheme for maintaining all-pairs shortest paths in planar networks. Given an error parameter $\epsilon$ such that $0〈\epsilon$ , our algorithm maintains approximate all-pairs shortest paths in an undirected planar graph G with nonnegative edge lengths. The approximate paths are guaranteed to be accurate to within a 1+ $\epsilon$ factor. The time bounds for both query and update for our algorithm is O( \epsilon -1 n 2/3 log 2 n log D) , where n is the number of nodes in G and D is the sum of its edge lengths. The time bound for the queries is worst case, while that for the additions is amortized. Our approximation algorithm is based upon a novel technique for approximately representing all-pairs shortest paths among a selected subset of the nodes by a sparse substitute graph.
    Type of Medium: Electronic Resource
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  • 20
    Electronic Resource
    Electronic Resource
    Springer
    Algorithmica 14 (1995), S. 322-339 
    ISSN: 1432-0541
    Keywords: Parallel algorithms ; Shortest paths ; Planar separators
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Notes: Abstract Computing shortest paths in a directed graph has received considerable attention in the sequential RAM model of computation. However, developing a polylog-time parallel algorithm that is close to the sequential optimal in terms of the total work done remains an elusive goal. We present a first step in this direction by giving efficient parallel algorithms for shortest paths in planar layered digraphs. We show that these graphs admit special kinds of separators calledone- way separators which allow the paths in the graph to cross it only once. We use these separators to give divide- and -conquer solutions to the problem of finding the shortest paths between any two vertices. We first give a simple algorithm that works in the CREW model and computes the shortest path between any two vertices in ann-node planar layered digraph in timeO(log2 n) usingn/logn processors. We then use results of Aggarwal and Park [1] and Atallah [4] to improve the time bound toO(log2 n) in the CREW model andO(logn log logn) in the CREW model. The processor bounds still remain asn/logn for the CREW model andn/log logn for the CRCW model.
    Type of Medium: Electronic Resource
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