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  • 1
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 71 (2000), S. 2582-2584 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A selection method to improve temperature compensation is proposed, which is effective in forming current regulator device with low temperature coefficient. The experimental results show that the temperature coefficients are of the order of 10−5/°C. The method is simple and the device stable and reliable. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Melbourne, Australia : Blackwell Publishing Asia
    Pacific economic review 10 (2005), S. 0 
    ISSN: 1468-0106
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: Abstract.  Spatial competition is often probed in terms of spatial oligopoly and/or monopolistic competition in the literature. This paper considers spatial competition as a form of perfect competition, in the sense that the firms are assumed to be price-takers located at the centre of a market area and practising uniform pricing. It shows that under scale economy competitive equilibria can occur, and may actually be observed in the form of international price differentials. Both a very high price and a very low price can yield conditions of competitive equilibrium in spatially or otherwise separate markets.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing, Ltd
    Pacific economic review 8 (2003), S. 0 
    ISSN: 1468-0106
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: Abstract.  This paper develops a generalized three-country model with downstream and upstream industries to analyze optimal import and export trade policies in the presence of monopoly distortion in a foreign intermediate input market. It shows that the import tariff and export tax are linearly dependent. Thus, the optimal choice of the tariff gives rise to the same results as the optimal choice of the export tax, which implies that the domestic government, to avoid tariff retaliation, can use export tax as a substitute for the import tariff.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Berkeley, Calif. : Berkeley Electronic Press (now: De Gruyter)
    Statistical applications in genetics and molecular biology 2.2003, 1, art8 
    ISSN: 1544-6115
    Source: Berkeley Electronic Press Academic Journals
    Topics: Biology
    Notes: Gene expression microarrays have become powerful tools in many areas of biological and biomedical research. These technologies allow researchers to measure the expression levels of thousands of genes in a tissue or cell sample simultaneously. One of the most common types of microarray experiments is simply an exploratory study to compare two samples (e.g. tumor and normal tissue) and look for a list of genes that might be differentially expressed between the two. Differential expression is typically measured by computing a t-statistic or similar statistic for each gene. The genes are then ranked according to the absolute value of the t-statistic, and the twenty or fifty best candidates might be studied in follow-up experiments. When sample sizes are small, the t-statistic can be problematic, because variances are estimated poorly and the "top 20" list is often dominated by the genes with the lowest variance estimates. Lönnstedt and Speed (2001) proposed an empirical Bayes method for avoiding this problem, and showed that their approach has lower false positive and false negative rates than t-statistic-based methods. However, their method was designed mainly for the two-channel microarray, which produces paired data. It is not suitable for technologies such as one-channel arrays that produce unpaired data. We propose a simplification for Lönnstedt and Speed's method, and then extend it to unpaired data with two or more independent treatments. We demonstrate our method on both simulated and real data. When the number of replicates is small, gene rankings based on our statistic appear to be much more reliable than rankings based on the t-statistic.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 0038-1098
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1574-695X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: To investigate whether immunization with glutathione S-transferase (GST) and mutant toxic shock syndrome toxin 1 (mTSST-1) fusion protein can protect against Staphylococcus aureus infection, we purified a non-toxic mutant GST–mTSST-1 fusion protein. Mice were immunized with the GST–mTSST-1 plus alum adjuvant and then challenged with viable S. aureus. The results showed that the survival rate of GST–mTSST-1-immunized group was higher and the bacteria counts in the organs were significantly lower than those of the non-immunized mice. Immunization with GST–mTSST-1 induced strongly the production of TSST-1 specific antibodies, especially immunoglobulin G1 and immunoglobulin G2b. Furthermore, the serum samples from GST–mTSST-1-immunized mice also significantly inhibited interferon-γ and tumor necrosis factor-α production from murine spleen cells by TSST-1. These results suggest that vaccination with GST–mTSST-1 provides protection against S. aureus infection and that the protection might be mediated by TSST-1-neutralizing antibody.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 505-507 (Jan. 2006), p. 121-126 
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The multi-walled carbon nanotubes (MWNTs) were added into the phenolic resin to fabricate MWNTs/phenolic nanocomposites. The pressure and temperature were applied to cure MWNTs/phenolic compound by hot press method, then followed by a post curing process. The results showed that post-curing of the nanocomposites specimen is necessary for better mechanical properties. The temperature used for post curing should be higher than the curing temperature. The higher curing pressure improved the Young’s modulus of the nanocomposites. The tensile failuremorphologies of MWNTs/phenolic nanocomposites were examined using field emission scanning electron microscope (FESEM) to evaluate the effects of manufacturing processes on the mechanical properties of MWNTs/phenolic nanocomposites
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 334-335 (Mar. 2007), p. 713-716 
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The multi-walled carbon nanotubes (MWNTs) and carbon fibers (CFs) were added to thephenolic resin to fabricate MWNTs/phenolic, MWNTs/CFs/phenolic nanocomposites andCFs/phenolic composites by hot press method. The differential scanning calorimetry (DSC) test wasperformed for the above-mentioned three kinds of composites. The valley points on the slope ofendothermic responses correspond to the glass transition temperatures of the composites. TheMWNTs/phenolic nanocomposites had the lowest glass transition temperature among the three kindsof composites discussed, which indicated a better thermal conductivity property of MWNTs.Phenolic-based composites reinforced by different weight percentages of MWNTs and CFs were alsoinvestigated. The tensile failure morphologies of nanocomposite specimens were examined using ascanning electron microscope to evaluate the possible effects on the glass transition temperature ofnanocomposites
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 336-338 (Apr. 2007), p. 1740-1742 
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Tribological behavior of B4C-SiC self-mated pairs was studied, and pre-oxidation treatmentwas adopted to improve the tribological properties of B4C-SiC. At the same SiC content, self-frictioncoefficient of B4C-SiC decreases with the increase of sliding distance, normal load, and sliding velocity;while the increasing of SiC content leads to increase of both self-friction coefficient and ware rate, whichwas determined to be within the range of 0.8×10-6~5.8×10-6 mm3·N-1·m-1. Pre-oxidation treatment of theB4C-SiC resulted in the formation of B2O3/H3BO3 lubricant layers, which effectively reduced theself-friction coefficient
    Type of Medium: Electronic Resource
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