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  • 1995-1999  (4)
  • 1970-1974  (1)
  • 1
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Thin metal evaporated (ME) tape with low remanence-thickness product (Mrδ), high coercivity (Hc) and low noise was designed to match a magnetoresistive (MR) head. This article focuses on the high density recording performance of a shielded MR head/thin ME tape media designed for use with an MR head. The PW50 measurement was adopted to certify that the depth of recording was restricted by magnetic layer thickness. Reduced second harmonic distortion at low density shows saturation-free operation of the MR head. Frequency domain measurements indicate drastically reduced ac erase noise level and higher output level at short wave length. High readback density (neglecting intertrack interference) of 1.07 Gbits/in2 with signal-to-noise ratio (SNR) after equalization of 18.7 dB was attained for a FeNi (AMR) head and 1.29 Gbits/in.2 with SNR of 20.0 dB for a spin-valve (GMR) head. The performance of the MR head/thin ME tape system was compared to commercial ME tape and thin metal particulate tape in terms of noise characteristics, depth of recording, and SNR after equalization. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 70 (1997), S. 523-525 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Linearity of the magnetoresistive (MR) transfer curve for an unshielded spin-valve (SV) sensor was studied. When the NiFe free layer thickness is greater than 5.0 nm, the anisotropic magnetoresistive (AMR) effect in it may overlap the giant magnetoresistive effect of the SV structure and deteriorate the linearity of the sensor response. By using a bilayer of NiFe/NiFeTa as the free layer for suppressing the AMR effect, superior linearity was obtained without a loss of the MR ratio. This new SV structure shows 5.0% as the MR ratio and −32.1 dB as second harmonic distortion, compared to −19.5 dB for a conventional one. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 373 (1995), S. 84-86 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] By physical monitoring of double-strand break (DSB)-induced recombination, the fate of recombining DNA can be observed in real time. A DSB induced at MAT-Z (Fig. 1) is repaired by copying intact mating-type sequences from an unexpressed donor locus, HMLa or HMRa. MAT switching takes one hour to ...
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Archives of toxicology 32 (1974), S. 297-306 
    ISSN: 1432-0738
    Keywords: Cadmium-Uptake ; Cadmium-Accumulation ; Cadmium Toxicity ; Cadmiumaufnahme ; Cadmiumanhäufung ; Cadmium-toxicität
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Weibliche Wistarratten wurden im Langzeitversuch mit cadmiumhaltiger Diät gefüttert. Es interessierten Cadmiumgehalt der Organe und Mortalität. Dabei ergaben sich folgende Resultate: 1. Die Cadmiumaufnahme (10 ppm oder 50 ppm) führte zu einer sofortigen Reduzierung der Nahrungsaufnahme und des Wachstums. Nach 41 Wochen unterschied sich die Geschwindigkeit der Cadmiumanreicherung in Niere und Leber in der Gruppe mit 10 ppm (0.47%) nicht von der Gruppe mit 50 ppm (0.53%). Die vom Organ aufgenommene Gesamtmenge war jedoch von der Cadmiumkonzentration abhängig. Bei 10 ppm enthielten Niere und Leber die gleiche Menge an Cadmium, wohingegen bei 50 ppm die Niere nur ein Viertel der von der Leber aufgenommenen Cadmiummenge enthielt. 2. Bei 50 ppm Cadmium war die Mortalität von der 28. Woche an signifikant erhöht, wobei eine gleichzeitige schnelle Zunahme von Cadmium in Niere und Leber auftrat. Histologisch konnte eine Zerstörung der Nierentubuli beobachtet werden.
    Notes: Abstract Paste-form food containing cadmium (10 ppm or 50 ppm) was administered to rats (Wistar strain, ♀) in a long-term study of cadmium content in the organs and mortality rate. The following results were obtained: (i) Cadmium intake (10 ppm or 50 ppm) led to an immediate reduction of food consumption and growth. As a result of 41 weeks of cadmium intake, the cadmium accumulation rate in the kidney and liver of the 10 ppm group (0.47%) did not differ from that of the 50 ppm group (0.53%). However, the distribution rate of cadmium to the kidney or liver depended on its concentration. With a 10 ppm intake, the kidney contained the same amount of cadmium as the liver, but with a 50 ppm intake it contained only one fourth of that in the liver. (ii) In the case of 50 ppm cadmium intake, the mortality was increased significantly beginning with the 28th week of intake coinciding with rapid increase of cadmium in the kidney and liver. Histologically, tubular damage was observed in the kidney.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of environmental contamination and toxicology 54 (1995), S. 878-883 
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
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