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  • 11
    Electronic Resource
    Electronic Resource
    Dependence of magnetic properties of Co-Pt films on sputtering conditions (1985)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 57 (1985), S. 4022-4024 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Magnetic properties, Young's modulus, and corrosion resistance of Co-Pt films deposited by targets-facing type of sputtering (TFTS) have been investigated. The films deposited at a Ar gas pressure PAr of 2 mTorr present good surface smoothness and dense texture. The c axis of the hexagonal crystallites in the film orients normal to the film plane. The films have nearly the same value of Young's modulus (≈17×1011 dyn/cm2) as that of the bulk Co-Pt alloy. On the other hand, the films deposited at PAr of 30 mTorr exhibit rough surface and columnar structure and do not exhibit any preferred orientation of crystallites. In addition, they have a small value of Young's modulus (≈5×1011 dyn/cm2) and poor corrosion resistance compared with the film deposited at low PAr. They have coercive force Hc larger than 1 kOe, which is mainly caused by their porous structure. Besides, the Co-Pt films have large in-plane uniaxial magnetic anisotropy, which is caused by both dc magnetic field applied to substrate during deposition and oblique incidence of sputtered particles upon substrate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.334658
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  • 12
    Electronic Resource
    Electronic Resource
    Effect of additional element (Fe, Zr, Ta) for Co-Cr films deposited by targets facing type of sputtering (1985)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 57 (1985), S. 4019-4021 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In order to improve both magnetic properties and wear resistance of Co-Cr films for perpendicular magnetic recording media, the effect of the addition of a small amount of Fe, Zr, and Ta to the Co-Cr binary alloy films has been investigated. They were deposited with a targets facing type sputtering (TFTS) apparatus. (i) The addition of a small amount of Fe (〈5 at. %) causes a significant decrease of the effective perpendicular magnetic anisotropy K⊥ (K⊥=Ku−2πM2s). The K⊥ has a negative value at Fe content above 1 at. %. Consequently, the recording characteristics become worse as Fe content increases. (ii) The addition of Zr leads to a remarkable decrease of grain size and improvement of surface smoothness along with an increase of wear resistance. It also causes evident decrease in Ku and saturation magnetization Ms. However, both K⊥ and remanence ratio Mr⊥/Mr(parallel) are increased by the addition of a small amount of Zr up to 0.5 at. %, though they decrease steeply with further increase of Zr content above 1 at. %. (iii) The addition of Ta shows almost the same tendency as Zr for the film structure and wear resistance. It also causes the decrease of Ku. But the K⊥ increases with an increase of Ta content up to 0.5 at. % and takes nearly constant value at Ta content above 0.5 at. %, since the Ms of the film decreases remarkably as Ta content increases. Mr⊥/Mr(parallel) increases gradually from 2.5 to 3.6 as Ta content increases. Consequently, the addition of a small amount of Ta is effective for improving both recording characteristics and wear resistance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.334657
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  • 13
    Electronic Resource
    Electronic Resource
    Ba–ferrite thin-film disk for perpendicular magnetic recording (1985)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 57 (1985), S. 4040-4042 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The authors have prepared Ba–ferrite film disks and evaluated their magnetic read/write characteristics. The c-axis-oriented Ba–ferrite thin films were formed epitaxially on c-axis-oriented ZnO films by means of a targets-facing-type sputtering system. The direction of easy magnetization in the film with perpendicular crystalline anisotropy is almost perpendicular to the film plane. Thus, the perpendicular remanence is more than 60 times as large as the in-plane one. The simple Ba–ferrite films, however, have a coercive force, Hc⊥ above 2 kOe which is too large to write on by means of a conventional head. The substitution of In3+ in the Ba–ferrite films makes the Hc⊥ values decrease to about 1 kOe without increasing the critical temperature, Tcritical, of c-axis orientation. The read/write characteristics of the films were measured with a MnZn–ferrite ring head. The reproduced signal exhibits clear dipulsive waveforms as the dipulse ratio exceeds 0.7. Furthermore, the overwrite ratio decreases below −28 dB for the In3+-substituted Ba-ferrite film disk. The Ba–ferrite film disks have promising potential as a high-density perpendicular magnetic recording medium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.334664
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  • 14
    Electronic Resource
    Electronic Resource
    Upregulation of T-Cell-Stimulating Activity of Mycobacteria-Infected Macrophages (2004)
    Oxford, UK; Malden, USA : Blackwell Science Ltd
    Scandinavian journal of immunology 60 (2004), S. 0 
    Details
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Macrophages are one of the most abundant host cells to come in contact with mycobacteria. However, the infected macrophages less efficiently stimulate autologous T cells in vitro. We investigated the effect of the induction of phenotypic change of macrophages on the host cell activities by using Mycobacterium leprae as a pathogen. The treatment of macrophages with interferon-γ (IFN-γ), GM-CSF and interleukin-4 deprived macrophages of CD14 antigen expression but instead provided them with CD1a, CD83 and enhanced CD86 antigen expression. These phenotypic features resembled those of monocyte-derived dendritic cells (DC). These macrophage-derived DC-like cells (MACDC) stimulated autologous CD4+ and CD8+ T cells when infected with M. leprae. Further enhancement of the antigen-presenting function and CD1a expression of macrophages was observed when treated with IFN-γ. The M. leprae-infected and -treated macrophages expressed bacterial cell membrane-derived antigens on the surface and were efficiently cytolysed by the cell membrane antigen-specific CD8+ cytotoxic T lymphocytes (CTL). These results suggest that the induction of phenotypic changes in macrophages can lead to the upregulation of host defence activity against M. leprae.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.0300-9475.2004.01472.x
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  • 15
    Electronic Resource
    Electronic Resource
    Second polar body retention and gynogenesis induced by thermal shock in pink salmon, Oncorhynchus gorbuscha (Walbaum) (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Aquaculture research 26 (1995), S. 0 
    Details
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Insemination of oocytes from six different salmon with irradiated heterospecific sperm combined with thermal shocks 10 min after activation successfully induced gynogenesis in pink salmon, Oncorhynchus gorbuscha (Walbaum). Biochemical genetic analysis and morphology of larvae con firmed their gynogenetic parentage, Thermal shocks of 26oC beginning 10 min after fertilization and lasting 15-30 min gave high yields of gynogenetic salmon (32% of normal diploid hatching, average of six females; 70% in oocytes from one female treated 20 min): shocks of 28oC lasting 10-16 min also gave high yields (2 5%), Shocks of 30oC lasting 6-12 min gave lesser yields (10%), Female donors varied significantly in the susceptibility of their oocytes to treatment (15-70% range of yield to average best treatment) but females did not interact significantly with heat shock treatment: different heat shocks had relatively the same effect on all females.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2109.1995.tb00904.x
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  • 16
    Electronic Resource
    Electronic Resource
    Absolute configuration of the active stereoisomer of new rice fungicide Carpropamid (1999)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 55 (1999), S. 1025-1027 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270199002504
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  • 17
    Electronic Resource
    Electronic Resource
    A new mode of X-ray bursts from MXB1730–335 (1980)
    [s.l.] : Nature Publishing Group
    Nature 283 (1980), S. 358-360 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The observation was carried out with an X-ray burst monitor which consists of two sets of rotating modulation collimators: two coarse modulation collimators (CMC 1,2) and a fine modulation collimator (FMC 1) with a field of view of 17.4 and 5.8 (FWHM), respectively. Positions of steady sources and ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/283358a0
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  • 18
    Electronic Resource
    Electronic Resource
    Observation of a New X-ray Source (1969)
    [s.l.] : Nature Publishing Group
    Nature 224 (1969), S. 784-785 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Our instrument was composed of two proportional counters (A and B) filled with Xe-methane gas at 330 mm Hg. The depth of the counter was 5 cm and the effective area of each 110?m Be window was 40 cm2. Each counter had cellular collimators and was shielded by veto-counters to reduce spurious counts. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/224784a0
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  • 19
    Electronic Resource
    Electronic Resource
    Further simultaneous hard X-ray and optical observations of Sco X-1 (1974)
    [s.l.] : Nature Publishing Group
    Nature 250 (1974), S. 38-40 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In our 1971 observations we found a positive correlation between the optical luminosity and the intensity of hard X rays at the optically enhanced phase of Sco X-l (refs 2 and 3). Although the optical enhancement seemed to be a flare, a rather poor time resolution of the photographic observation ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/250038a0
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  • 20
    Electronic Resource
    Electronic Resource
    Energy Spectrum of a Nova-like X-ray Source (1971)
    [s.l.] : Nature Publishing Group
    Nature 229 (1971), S. 31-33 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We now describe the results of further analysis of the data obtained in the same flight and the succeeding flight by the rocket, S-210, launched on the next day from the same place. We took special care in the fabrication and calibration of the X-ray detectors, and in the aspect analysis of the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/229031a0
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