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  • 1
    Electronic Resource
    Electronic Resource
    Nonlinear spinor field in Bianchi type-I Universe filled with perfect fluid: Exact self-consistent solutions (1997)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 38 (1997), S. 5305-5318 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: Self-consistent solutions to nonlinear spinor field equations in general relativity have been studied for the case of Bianchi type-I space–time filled with perfect fluid. The initial and the asymptotic behaviors of the field functions and the metric one have been thoroughly studied. The absence of initial singularity for some types of solutions and also the isotropic mode of space–time expansion in some special cases should be emphasized. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.531944
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  • 2
    Electronic Resource
    Electronic Resource
    Interchangeable oxygen and air connectors (2001)
    Oxford, UK : Blackwell Science Ltd
    Anaesthesia 56 (2001), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2044.2001.2369-7.x
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  • 3
    Electronic Resource
    Electronic Resource
    Leishmania donovani Infection of a Susceptible Host Results in CD4+ T-Cell Apoptosis and Decreased Th1 Cytokine Production (1999)
    Oxford, U.K. and Cambridge, USA : Blackwell Science Ltd
    Scandinavian journal of immunology 49 (1999), S. 0 
    Details
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The disease visceral leishmaniasis is caused by a protozoan parasite, Leishmania donovani and is characterized by depressed cell-mediated immunity (CMI) and unhindered parasite growth in a susceptible host. The opposite trend is observed in a resistant host. However, the mechanism of this loss of CMI during the progressive disease is unknown as yet. In this report, we demonstrate that more than 40% of CD4+ T cells from a susceptible host undergo apoptosis resulting in a significant decrease in interleukin (IL)-2 and interferon (IFN)-γ secretion, leaving IL-4 secretion unaffected. These changes are not apparent in the case of CD4+ T cells derived from a resistant host. The data reported here suggest that experimental Leishmania donovani infection leads to selective deletion of the IL-2 and IFN-γ-secreting cells but not Th2-like cells in a susceptible but not a resistant host.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-3083.1999.00486.x
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  • 4
    Electronic Resource
    Electronic Resource
    Th1-specific Bystander Costimulation Imparts Resistance against Mycobacterium tuberculosis Infection (2000)
    Oxford, U.K. and Cambridge, USA : Blackwell Science Ltd
    Scandinavian journal of immunology 52 (2000), S. 0 
    Details
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The protection against Mycobacterium tuberculosis infection is mediated by T helper type-1 (Th1) cells. Infection of BALB/c mice with M. tuberculosis downregulates expression of a Th1-specific costimulatory molecule, M150, on the surface of infected macrophages. The proliferation of Th cells and Th1-cytokine production by these cells are higher in case of M. tuberculosis antigen presentation by uninfected macrophages than by infected macrophages. The difference in inducing interleukin(IL)-2 and interferon (IFN)-γ secretion is abolished by providing bystander costimulation through M150 on liposomes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-3083.2000.00808.x
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  • 5
    Electronic Resource
    Electronic Resource
    Immunobiological Studies on Experimental Visceral Leishmaniasis IV. Kinetics of Evolution of Disease-Promoting Versus Host-Protective Cells of Monocyte-Macrophage Lineage and their Characterization (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Scandinavian journal of immunology 42 (1995), S. 0 
    Details
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The evolution of cells of the monocyte-macropbage lineage (MML cells) in the spleen of Leishmania donovani (LD) infected BALB/c mice was studied. Spleen cells were fractionated on a discontinuous percoll gradient and adherent cells (AC) were purified from fractionated spleen cells by adherence steps that appeared at the interfaces of 25–35%, 35–40%, 40–45% and 45–50% percoll gradients. The AC were characterized as MML cells on the basis of positive staining for non-specific esterase. Adherent cells that appeared at the interfaces of 25–35% and 40–45% were defined as A and C, respectively, and both of them showed extreme variation in a progressive infection. It was observed that A supported parasite replication whereas C remained refractory when infected with LD in vitro. Furthermore, when A cells and C cells were used as antigen-presenting cells to stimulate mixed population of IFN-γ producing and IL-4 producing T-cells, it was observed that IL-4 and IFN-γ were the predominating cytokine in the T-cell supernatant, respectively. Both A and C were found to be increased hand-in-hand up to 5 months of infection and from then on A decreased and C increased in their numerical strength (A-C reciprocity). The evolution of A-C reciprocity coincided with the gradual reduction in the parasitaemia in the spleen suggesting that this may contribute to the acquisition of anti-leishmania immunity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3083.1995.tb03693.x
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  • 6
    Electronic Resource
    Electronic Resource
    Vegetarians and surgery (2003)
    Oxford, UK : Blackwell Science Ltd
    Anaesthesia 58 (2003), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2044.2003.03362_32.x
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  • 7
    Electronic Resource
    Electronic Resource
    Production of xylitol by Candida peltata (1999)
    Springer
    Journal of industrial microbiology and biotechnology 22 (1999), S. 633-636 
    Details
    ISSN: 1476-5535
    Keywords: Keywords: xylitol production; xylose fermentation; mixed sugars utilization; Candida peltata
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Candida peltata NRRL Y-6888 to ferment xylose to xylitol was evaluated under different fermentation conditions such as pH, temperature, aeration, substrate concentration and in the presence of glucose, arabinose, ethanol, methanol and organic acids. Maximum xylitol yield of 0.56 g g−1 xylose was obtained when the yeast was cultivated at pH 6.0, 28°C and 200 rpm on 50 g L−1 xylose. The yeast produced ethanol (0.41 g g−1 in 40 h) from glucose (50 g L−1) and arabitol (0.55 g g−1 in 87 h) from arabinose (50 g L−1). It preferentially utilized glucose 〉 xylose 〉 arabinose from mixed substrates. Glucose (10 g L−1), ethanol (7.5 g L−1) and acetate (5 g L−1) inhibited xylitol production by 61, 84 and 68%, respectively. Arabinose (10 g L−1) had no inhibitory effect on xylitol production.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/sj.jim.2900674
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  • 8
    Electronic Resource
    Electronic Resource
    Shape changes and test of the critical-point symmetry X(5) in N = 90 nuclei (2003)
    Springer
    The European physical journal 20 (2003), S. 173-178 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. Reliable and precise lifetimes of excited states in 154 Gd and 156 Dy were measured using the recoil distance Doppler shift (RDDS) technique. Excited states of 154 Gd were populated via Coulomb excitation with a 32 S beam at 110 MeV delivered by the FN tandem accelerator at the University of Cologne. For 156 Dy a coincidence plunger experiment was performed at the Laboratori Nazionali di Legnaro with the GASP spectrometer and the Cologne coincidence plunger apparatus using the reaction 124 Sn(36 S,4n)156 Dy at a beam energy of 155 MeV. Shape changes previously suggested to appear in the ground-state band (gsb) of 156 Dy and in the s-band above the first band crossing were not supported by the transition probabilities determined in this work. The measured transition probabilities of 156 Dy and 154 Gd as well as the corresponding energy spectra are compared with the predictions of the recently proposed X(5) model and in the case of 156 Dy also with an IBA fit.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epja/i2002-10347-6
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  • 9
    Electronic Resource
    Electronic Resource
    Soliton model of atom (1995)
    Springer
    Foundations of physics 25 (1995), S. 1723-1731 
    Details
    ISSN: 1572-9516
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The Einstein-de Broglie soliton concept is applied to simulate stationary states of an electron in a hydrogen atom. According to this concept, the electron is described by the localized regular solutions to some nonlinear equations. It is shown that the electron-solilon center travels along some stationary orbit around the Coulomb center. The electromagnetic radiation is absent as the Poynting vector has non-wave asymptote O(r −3)after averaging over angles.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02057884
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  • 10
    Electronic Resource
    Electronic Resource
    Production of L-arabitol from L-arabinose by Candida entomaea and Pichia guilliermondii (1996)
    Springer
    Applied microbiology and biotechnology 45 (1996), S. 299-306 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract  Lignocellulosic biomass, particularly corn fiber, represents a renewable resource that is available in sufficient quantities from the corn wet milling industry to serve as a low cost feedstock for production of fuel alcohol and valuable coproducts. Several enzymatic and chemical processes have potential for the conversion of cellulose and hemicellulose to fermentable sugars. The hydrolyzates are generally rich in pentoses (D-xylose and L-arabinose) and D-glucose. Yeasts produce a variety of polyalcohols from pentose and hexose sugars. Many of these sugar alcohols have food applications as low-calorie bulking agents. During the screening of 49 yeast strains capable of growing on L-arabinose, we observed that two strains were superior secretors of L-arabitol as a major extracellular product of L-arabinose. Candida entomaea NRRL Y-7785 and Pichia guilliermondii NRRL Y-2075 produced L-arabitol (0.70 g/g) from L-arabinose (50 g/l) at 34°C and pH 5.0 and 4.0, respectively. Both yeasts produced ethanol (0.32–0.33 g/g) from D-glucose (50 g/l) and only xylitol (0.43–0.51 g/g) from D-xylose (50 g/l). Both strains preferentially utilized D-glucose〉D-xylose〉L-arabinose from mixed substrate (D-glucose, D-xylose and L-arabinose, 1:1:1, 50 g/l, total) and produced ethanol (0.36–0.38 g/g D-glucose), xylitol (0.02–0.08 g/g D-xylose) and L-arabitol (0.70–0.81 g/g L-arabinose). The yeasts co-utilized D-xylose (6.2–6.5 g/l) and L-arabinose (4.9–5.0 g/l) from corn fiber acid hydrolyzate simultaneously and produced xylitol (0.10 g/g D-xylose) and L-arabitol (0.53–0.54 g/g L-arabinose).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002530050687
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