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  • 1
    Electronic Resource
    Electronic Resource
    Power losses of soft magnetic composite materials under two-dimensional excitation (1999)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 85 (1999), S. 4403-4405 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Soft magnetic composite materials produced by powder metallurgy techniques can be very useful for construction of low cost small motors. However, the rotational core losses and the corresponding B–H relationships of soft magnetic composite materials with two-dimensional rotating fluxes have neither been supplied by the manufacturers nor reported in the literature. This article reports the core loss measurement of a soft magnetic composite material, SOMALOY™ 500, Höganäs AB, Sweden, under two-dimensional excitations. The principle of measurement, testing system, and power loss calculation are presented. The results are analyzed and discussed. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.369798
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  • 2
    Electronic Resource
    Electronic Resource
    Intracerebroventricular Administration of AT1 Receptor Antisense Oligonucleotides Inhibits the Behavioral Actions of Angiotensin II (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 62 (1994), S. 0 
    Details
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract: Antisense Oligonucleotides were developed to study the expression and function of angiotensin type 1 (AT1) receptors in cultured cells and brain. In both liver epithelial WB and neuro-blastoma N1E-115 cells AT1 antisense oligomers substantially decreased AT1 receptor density, whereas angiotensin type 2 (AT2) receptors remained unchanged. Similarly, repeated intracerebroventricular injections of AT1 antisense oligomers in rats decreased AT1 receptor density in hypothalamic-thalamic-septal tissue, and AT2 receptors were unaffected. Intracerebroventricular antisense oligomers also attenuated drinking elicited by intra-cerebroventricular angiotensin II but not the cholinomimetic carbachol. Collectively, these results demonstrate that antisense Oligonucleotides attenuate angiotensin receptor expression and function in behaving animals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1471-4159.1994.62052053.x
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  • 3
    Electronic Resource
    Electronic Resource
    Red electroluminescence from a thin organometallic layer of europium (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 80 (1996), S. 7144-7150 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We investigate the performance of organic electroluminescence devices employing a fluorinated diketone complex of europium (ETP) as the emitter material. The architecture of our devices isolates the emitter from the injecting contacts by sandwiching a thin layer of ETP between a hole-transporting diamine layer and an electron-transporting aluminum complex layer. The organic layers are deposited in high vacuum with rate-controlled sources onto glass substrates coated with indium–tin–oxide, and the cell is completed by evaporation of aluminum or calcium–aluminum cathodes. By varying the thickness of ETP layer in increments of 6 A(ring) we demonstrate spatial confinement of the electroluminescence emission zone and optimal performance for an ETP thickness of 50 A(ring). Both the optical and electrical characteristics of these cells follow steep power-law relationships with voltage, which are indicative of trap-modified, space-charge-limited conduction. With aluminum cathodes we routinely achieve luminances up to 10 cd/m2 with direct current densities near 40 mA/cm2. The electroluminescence has a red–orange color and exhibits a narrow spectrum that is characteristic of trivalent europium ions. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.363736
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  • 4
    Electronic Resource
    Electronic Resource
    Interfacial structure of nanocrystalline Fe73.5Cu1Nb3Si13.5B9 studied by positron annihilation (1995)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 77 (1995), S. 6214-6216 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Nanocrystalline Fe73.5Cu1Nb3Si13.5B9 alloy prepared by the crystallization of amorphous alloy has been studied by using the positron annihilation technique. Positron parameters, i.e., lifetime τ1, τ2, and line shape parameter S are obtained as a function of the annealing temperature. The results show that there exist two types of defects at the interfaces of nanocrystalline Fe73.5Cu1Nb3Si13.5B9 alloy: vacancy-like and vacancy-like group microvoids characterized by the lifetime τ1 and τ2. The former is in overwhelming majority. The changes of the structural defects corresponding to different stages, structural relaxation, and crystallization are discussed. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.359150
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  • 5
    Electronic Resource
    Electronic Resource
    Improvement of flux pinning in the Ag-clad Bi-Pb-Sr-Ca-Cu-O wires through the use of a short period melt processing (1992)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 60 (1992), S. 2929-2931 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A significant enhancement of the Jc in magnetic field in the Ag-clad Bi-Pb-Sr-Ca-Cu-O (BPSCCO) wires has been achieved by using a short period melt processing. The weak links have been largely eliminated in the melt-processed tapes which exhibits a 3–10-fold increase in the Jc at 77 K and 1 T over the normally processed tapes. For tapes with a thickness 80 μm 60% of melt-processed samples have the Jc values between 10 000 and 27 000 A/cm2 at 77 K in zero field. The irreversibility lines determined using ac susceptibility measurements under dc fields confirmed the improvement of flux pinning in the melt-processed tapes compared with the normally processed tapes. The improved Jc-H characteristics may be attributed to the desirable microstructures produced from the high Tc phase formation-decomposition-recovery process through the use of a short period melting.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.106823
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  • 6
    Electronic Resource
    Electronic Resource
    Critical currents in silver-sheathed (Bi,Pb)2Sr2Ca2Cu3O10−y superconducting tapes (1991)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 59 (1991), S. 3171-3173 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Nearly 95 vol % of the 110 K superconducting phase was formed by lead doping in a Bi–Sr–Ca–Cu–O system. The processed 110 K superconducting powders were used to produce long silver-sheathed tapes with a highly textured microstructure by rolling and prolonged sintering. The transport critical current density was measured at 4.0 K to be 0.7×105 A/cm2 (the corresponding critical current is 74 A) at zero field and 1.6×104 A/cm2 at 12 T for H(parallel)ab. At 76 K, the critical current density reached a value of ∼1×104 A/cm2 at zero field for H(parallel)ab and gradually decreased to 419 A/cm2 at 1 T. Excellent grain alignment in the a–b plane led to greatly improved critical current densities under a magnetic field. The relationship between the transport properties and the microstructure of the tapes is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.105774
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  • 7
    Electronic Resource
    Electronic Resource
    Technical Notes - Synthesis of a Lipid/Peptide/Drug Conjugate: N4(Acylpeptidyl)-Ara-C (1994)
    s.l. : American Chemical Society
    Bioconjugate chemistry 5 (1994), S. 162-166 
    Details
    ISSN: 1520-4812
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/bc00026a601
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  • 8
    Electronic Resource
    Electronic Resource
    YBa2Cu3O7 thin films grown on sapphire with epitaxial yttria-stabilized zirconia buffer layers (1992)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 61 (1992), S. 2412-2413 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Epitaxial yttria-stabilized zirconia (YSZ) buffer layers were grown successfully on sapphire (112¯0) substrates by using rf magnetron sputtering method. The films were cubic in structure with their (100) orientation normal to the substrate surface. YBa2Cu3O7 thin films were deposited on the YSZ/sapphire substrates by the in situ dc magnetron sputtering method. X-ray diffraction analysis showed they were highly c-axis oriented with the zero resistance temperature TCO=92 K and critical current density Jc=1.6×106 A/cm2 at 77 K.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.108181
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  • 9
    Electronic Resource
    Electronic Resource
    Inferring secondary flows from smoke or dye flow visualization: Two case studies (1993)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 5 (1993), S. 2689-2701 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Spectral element simulations of the steady, incompressible, parabolized Navier–Stokes equations are used to compare numerically simulated smoke or dye (tracer) patterns with numerically calculated spatially developing flow patterns in the following two geometries: curved channel flow and twisted square duct flow (which consists of three joined 90° square curved ducts with perpendicular planes of curvature). Secondary flows in these two geometries are caused by streamwise-oriented vortices, which have been visualized in previous experiments by viewing smoke or dye patterns in cross-sectional planes perpendicular to the streamwise direction. Simulations of tracer patterns (obtained by tracking weightless particles) show that only when there is little streamwise variation of the secondary flow do tracer patterns provide a correct qualitative indication of the secondary flow patterns. For example, tracer patterns misrepresent merging of curved channel vortices and the locations and shapes of the twisted duct vortices. These results highlight the difficulty in obtaining consistent interpretations of tracer patterns in flows with significant streamwise variation, and in obtaining a priori predictions of the validity of inferring secondary flow patterns from tracer patterns. For the two case studies examined, it is found that unless there is little streamwise variation of the secondary flow structure, inferences of secondary flow patterns from experimental tracer patterns should be made only when well validated by other methods.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.858732
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  • 10
    Electronic Resource
    Electronic Resource
    DNA Vaccination Using Bacillus Calmette-Guerin-DNA as an Adjuvant to Enhance Immune Response to Three Kinds of Swine Diseases (2005)
    Oxford, UK; Malden, USA : Blackwell Science Ltd
    Scandinavian journal of immunology 62 (2005), S. 0 
    Details
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: In order to enhance the immune efficacy of DNA vaccination, experiments were conducted to investigate the regulating effects of Bacillus Calmette-Guerin (BCG)-DNA as an adjuvant on immune responses of mice against foot-and-mouth disease (FMD), Aujeszky's disease (AjD) and classical swine fever (CSF). BCG-DNA was purified from BCG by ion-exchange chromatography. Three DNA vaccines (pVSG, pVgD and pVE2) against the respective infection were constructed, and BCG-DNA was coimmunized to mice by muscle injection. The results showed that titres of specific immunoglobulin (Ig)G to the vaccines mounted remarkably in the sera of the adjuvant covaccinated mice (P 〈 0.01). Antibody isotype IgG2a and IgG1 also increased, respectively, in mice coimmunized with BCG-DNA compared with those of the control groups (P 〈 0.01). Cellular immune cytokine interferon-γ and cytotoxic T lymphocytes were detected in coimmunized BCG-DNA groups (P 〈 0.05). Whereas interleukin-4, humoral immune cytokine, was not significant (P 〉 0.05). These results suggest that codelivery of BCG-DNA with DNA vaccines against FMD, AjD and CSF can enhance the induction of antigen-specific, especially, cell-mediated immunity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3083.2005.01674.x
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