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  • 1
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    RTA2 is involved in calcineurin-mediated azole resistance and sphingoid long-chain base release in Candida albicans (2008)
    Springer
    Details
    Publication Date: 2008-11-11
    Print ISSN: 1420-682X
    Electronic ISSN: 1420-9071
    Topics: Biology , Medicine
    Published by Springer
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    PAPER CURRENT
  • 2
    Electronic Resource
    Electronic Resource
    Cooperative Mobile Robotics: Antecedents and Directions (1997)
    Springer
    Autonomous robots 4 (1997), S. 7-27 
    Details
    ISSN: 1573-7527
    Keywords: cooperative robotics ; swarm intelligence ; distributed robotics ; artificial intelligence ; mobile robots ; multiagent systems
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract There has been increased research interest in systems composed of multiple autonomous mobile robots exhibiting cooperative behavior. Groups of mobile robots are constructed, with an aim to studying such issues as group architecture, resource conflict, origin of cooperation, learning, and geometric problems. As yet, few applications of cooperative robotics have been reported, and supporting theory is still in its formative stages. In this paper, we give a critical survey of existing works and discuss open problems in this field, emphasizing the various theoretical issues that arise in the study of cooperative robotics. We describe the intellectual heritages that have guided early research, as well as possible additions to the set of existing motivations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008855018923
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  • 3
    Electronic Resource
    Electronic Resource
    Thomsen-Friedenreich-related carbohydrate antigens in normal adult human tissues: a systematic and comparative study (1996)
    Springer
    Histochemistry and cell biology 106 (1996), S. 197-207 
    Details
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract  A broad variety of normal human tissues were examined for the expression of Thomsen-Friedenreich (TF)-related histo-blood group antigens, TF (Galβ1-3GalNAcα1-R), Tn (TF precursor, GalNAcα1-R), sialosyl-Tn (NeuAcα2-6GalNAcα1-R), considered to be useful in cancer diagnosis and immunotherapy, and sialosyl-TF, the cryptic form of TF. These antigens or, more correctly, glycotopes, were determined by immunohistochemistry with at least two monoclonal antibodies (mAbs) each (except sialosyl-TF) as well as by lectin histochemistry. For a better dissection of sialosyl-TF and TF glycotopes, tissue sections were pretreated with galactose oxidase or the galactose oxidase-Schiff sequence. Staining with mAbs appeared to be more restricted than with the lectins used. Distribution patterns among normal epithelia were different for all four antigens. These antigens were also detected in some non-epithelial tissues. They can be classified in the following sequence according to the frequency of their occurrence in normal tissues: sialosyl-TF 〉 〉sialosyl-Tn 〉Tn 〉TF. Most of the positively staining sites for TF, Tn, and sialosyl-Tn are located in immunologically privileged areas. The complex results obtained with anti-TF mAbs (after treatment of the tissue sections with sialidase from Vibrio cholerae) and the lectins amaranthin and jacalin revealed a differential distribution of the subtypes of sialosyl-TF [NeuAcα2-3Galβ1-3GalNAcα1-R and Galβ1-3 (NeuAcα2-6)GalNAcα1-R] in normal human tissues. From our data it can be inferred that TF, Tn, and sialosyl-Tn are promising targets for a cancer vaccine.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004180050032
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  • 4
    Electronic Resource
    Electronic Resource
    Production of caproic acid by cocultures of ruminal cellulolytic bacteria and Clostridium kluyveri grown on cellulose and ethanol (1995)
    Springer
    Applied microbiology and biotechnology 44 (1995), S. 507-513 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract  Ruminal cellulolytic bacteria (Fibrobacter succinogenes S85 or Ruminococcus flavefaciens FD-1) were combined with the non-ruminal bacterium Clostridium kluyveri and grown together on cellulose and ethanol. Succinate and acetate produced by the cellulolytic organisms were converted to butyrate and caproate only when the culture medium was supplemented with ethanol. Ethanol (244 mM) and butyrate (30 mM at pH 6.8) did not inhibit cellulose digestion or product formation by S85 or FD-1; however caproate (30 mM at pH 6.8) was moderately inhibitory to FD-1. Succinate consumption and caproate production were sensitive to culture pH, with more caproic acid being produced when the culture was controlled at a pH near neutrality. In a representative experiment under conditions of controlled pH (at 6.8) 6.0 g cellulose l-1 and 4.4 g ethanol l-1 were converted to 2.6 g butyrate l-1 and 4.6 g caproate l-1. The results suggest that bacteria that efficiently produce low levels of ethanol and acetate or succinate from cellulose should be useful in cocultures for the production of caproic acid, a potentially useful industrial chemical and bio-fuel precursor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002530050590
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  • 5
    Electronic Resource
    Electronic Resource
    Production of caproic acid by cocultures of ruminal cellulolytic bacteria and Clostridium kluyveri grown on cellulose and ethanol (1995)
    Springer
    Applied microbiology and biotechnology 44 (1995), S. 507-513 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Ruminal cellulolytic bacteria (Fibrobacter succinogenes S85 or Ruminococcus flavefaciens FD-1) were combined with the non-ruminal bacterium Clostridium kluyveri and grown together on cellulose and ethanol. Succinate and acetate produced by the cellulolytic organisms were converted to butyrate and caproate only when the culture medium was supplemented with ethanol. Ethanol (244 mM) and butyrate (30 mM at pH 6.8) did not inhibit cellulose digestion or product formation by S85 or FD-1; however caproate (30 mM at pH 6.8) was moderately inhibitory to FD-1. Succinate consumption and caproate production were sensitive to culture pH, with more caproic acid being produced when the culture was controlled at a pH near neutrality. In a representative experiment under conditions of controlled pH (at 6.8) 6.0 g cellulose 1−1 and 4.4 g ethanol 1−1 were converted to 2.6 g butyrate 1−1 and 4.6 g caproate 1−1. The results suggest that bacteria that efficiently produce low levels of ethanol and acetate or succinate from cellulose should be useful in cocultures for the production of caproic acid, a potentially useful industrial chemical and bio-fuel precursor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00169952
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  • 6
    Electronic Resource
    Electronic Resource
    Millimeter and infrared observations of SGR 1806-20 (1995)
    Springer
    Astrophysics and space science 231 (1995), S. 89-92 
    Details
    ISSN: 1572-946X
    Keywords: Gamma-ray:Bursts ; ISM:Individual (G10.0-0.3) ; Supernova remnants
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present CO(1-0) observations toward the soft gamma-ray repeater SGR 1806-20. We discuss the implications on the distance to the X-ray counterpart: AX 1805.7-2025. We also present an upper limit at λ = 1.3 mm for the thermal emission from dust and high resolution IRAS maps of the region. SGR 1806-20 is very likely associated with the H II complex W31. The G10.0-0.3 supernova remnant (SNR) could be expanding in the very low density region produced by the wind of the bright O9-B2 star recently detected.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00658594
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  • 7
    Electronic Resource
    Electronic Resource
    Hg-1223 Thick Film on Flexible Ni Substrates (1998)
    Springer
    Journal of superconductivity 11 (1998), S. 181-184 
    Details
    ISSN: 1572-9605
    Keywords: Hg-1223 ; Hg-1212 ; Ni-substrates ; Jc ; thick film
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Hg-1223 thick films on flexible Ni substrate coated with Cr(Ag,Pd) have been fabricated by a two-step spray/press process. The effect of possible interfacial diffusion between Hg-1223/Ni has also been examined. By properly adjusting the processing parameters, a self-field Jc ∼ 7×104 A/cm2 at 77 K has been achieved inthese Hg-1223 thick-film tapes, comparable to that of the well-known BSCCO tapes prepared by the more complex powder-in-tube technique.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022612214098
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  • 8
    Electronic Resource
    Electronic Resource
    δ-Influence on the pressure-effect on Tc of HgBa2CuO4+δ and the inverse parabolic Tc-relation (1995)
    Springer
    Journal of superconductivity 8 (1995), S. 393-396 
    Details
    ISSN: 1572-9605
    Keywords: high temperature superconductivity ; pressure effect
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract We have observed a δ-independent linear pressure effect on Tc of HgBa2CuO4+δ under hydrostatic pressures up to 1.7 GPa for δ≤0.30 but a nonlinear effect for δ〉0.30. These results, together with previous doping data, show a possible non-rigidity of the electron bands of the compounds, based on which previous phenomenological models of the pressure effect on Tc are built, and thus suggest only a restricted universality for the inverse parabolic relation between Tc and charge carriers per CuO2-layer. In other words, factors in addition to charge carriers can affect high temperature superconductivity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00722813
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  • 9
    Electronic Resource
    Electronic Resource
    The penetration depth of HgBa2CuO4+δ with 0.07 ≤ δ ≤ 0.35 (1995)
    Springer
    Journal of superconductivity 8 (1995), S. 465-466 
    Details
    ISSN: 1572-9605
    Keywords: penetration depth ; doping
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The magnetic penetration depth λ(T) of three HgBa2CuO4+δ samples with 0.16 〈 δ ≤ 0.27 has been determined from the reversible magnetization. The obtained λ follows a BCS-like correlation of 1/λ2 ∝ 1−(T/Tc)2 over whole measured temperature range in an underdoped sample with Tc ∼ 90 K, but deviates significantly from similar fits in an overdoped sample with the same Tc and an optimum doped sample, whose 1/λ2 's depends on T nearly linearly below Tc/2. This asymmetry between the underdoped and overdoped samples suggests that the T-dependence of 1/λ2 is affected by doping in a complicated way.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00722831
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  • 10
    Electronic Resource
    Electronic Resource
    Conducting polymers at low temperatures and high magnetic fields (1995)
    Springer
    Journal of low temperature physics 101 (1995), S. 605-610 
    Details
    ISSN: 1573-7357
    Keywords: 72.15. Jf ; 71.20.Hk ; 71.55.Jv
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Advances in the synthesis of organic conducting polymer systems has increased the electrical conductivity of these systems by several orders of magnitude in the last decade. Several practical applications are envisioned for such systems, but a thorough understanding of the conduction mechanisms and identification of the charge carriers is lacking, making design and implementation for bulk synthesis difficult. In order to clarify our understanding of the electrical properties of these systems, the resistivity and magnetoresistivity of various polymers doped near the metal - insulator transition, such as polyaniline protonated by camphor sulfonic acid (PANi-CSA) and polypyrrole doped with PF6 (PPy-PF6), have been studied down to 25 mK in magnetic fields up to 16 T.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00753361
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