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  • 1
    Electronic Resource
    Electronic Resource
    A new magnetic shield using C-shaped magnetic materials (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 6017-6019 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: This paper describes the structure and the characteristics of a new magnetic shielding device. This magnetic shielding device utilizes a certain magnetic circuit in which the C-shaped magnetic materials are combined in a cagelike shape. This shield is a nonenclosing structure, like a spherical shell. It is effective in reducing the leakage flux from a Helmholtz coil. This device has a number of excellent features, i.e., the shield is free from heat generated by the coil because of the open structure, there is a decrease in fabrication costs because of the simple structure, and it is easy to build a practical shield of this type.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342136
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  • 2
    Electronic Resource
    Electronic Resource
    Fabrication of an inductor using amorphous films with a multilayered structure (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 5673-5675 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: By making use of the high permeability and the excellent high-frequency characteristics of Co-metal amorphous multilayered films, an inductor was fabricated. In order to improve the high-frequency characteristics, stripe patterned films were studied. The inductor consists of two of these films and a ferrite yoke. The value of inductance and quality factor were measured in the frequency range of 0.01–200 MHz. Although the value of the present inductance is small compared with other small size inductors developed so far, excellent high-frequency characteristics may be expected if an inductor is fabricated composed solely of these multilayered films.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342270
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  • 3
    Electronic Resource
    Electronic Resource
    A new type of magnetic shield (abstract) (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 5706-5706 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We propose a new type of magnetic shield which is made by piling the many U-shaped soft magnetic materials. We call it #-type shield because of its shape as shown in Fig. 1. The principle of magnetic shielding is based on the zero vector sum of the applied field and demagnetizing field outside the soft magnetic specimens. In this way a weak field region is produced inside the #-type shield which screen out the external field. Therefore, shielding effectiveness can be controlled by changing the demagnetizing factor which primarily depends on the shape of the specimen. It is hard for the conventional magnetic shield like a cylindrical shell to control its demagnetizing factor, therefore, the shielding effectiveness is based on only the permeability of the soft magnetic materials. However, it is easy for the #-type shield to control its demagnetizing factor by changing the length of U-shaped speciments. The shielding ratios S (external field/internal field) of the #-type shield have the maximum as the external field increases. The demagnetizing field due to U-shaped iron cancels perfectly the external field when the shielding ratio S is maximum. Therefore, S is extremely high (S=104). The critical field at which S is maximum optionally varies with the length L of U-shaped specimens. The shielding effectiveness of #-type shield using iron is as effective as that of the cylindrical shield using permalloy. The #-type shield is more economical. The shield is free from temperature rising because of the open structure. The #-type shield using iron can be applied to almost any device having magnetic structure or involving electron beam.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342257
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  • 4
    Electronic Resource
    Electronic Resource
    dc-type voltage reset characteristics for soft magnetic cores at high frequencies (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 6038-6040 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: dc-type voltage reset characteristics for amorphous ribbon, permalloy ribbon, sendust ribbon, and amorphous fiber were examined and compared with constant current reset characteristics (CMC) up to 500 kHz. A new instrument with square-wave driving is developed. We defined the control force by using the average value of control current when the control current flows forwardly with control voltage. An amorphous core with ribbon thickness of 5 μm exhibited highest gain among the cores. This clarified that the average value of reset magnetizing force for an amorphous core corresponds to the average speed of flux reset and that dc-type voltage reset characteristics for an amorphous ribbon are almost identical to CMC at high frequencies. These results are applicable for a detailed steady-state analysis of magnetic amplifiers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342146
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  • 5
    Electronic Resource
    Electronic Resource
    Transcriptomic analysis of metabolic changes by phosphorus stress in rice plant roots (2003)
    Oxford, UK : Blackwell Science Ltd
    Plant, cell & environment 26 (2003), S. 0 
    Details
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: As most soil phosphates exist as insoluble inorganic phosphate and organic phosphates, higher plants have developed several strategies for adaptation to low phosphorus (P). These include the secretion of acid phosphatase and organic acids, induction of the inorganic phosphate (Pi) transporter and the substitution of some enzyme activities as alternative pathways to increase P utilization efficiency. It has been proposed that plants also have a ‘pho regulon’ system, as observed in yeast and Escherichia coli; however, the detail of the regulation system for gene expression on P status is still unclear in plants. To investigate the alteration of gene expression of rice roots grown under P-deficient conditions, a transcriptomic analysis was conducted using a cDNA microarray on rice. Based on the changes of gene expression under a –P treatment, the up-regulation of some genes due to P deficiency was confirmed . Some new important metabolic changes are suggested, namely: (1) acceleration of carbon supply for organic acid synthesis through glycolysis; (2) alteration of lipid metabolism; (3) rearrangement of compounds for cell wall; and (4) changes of gene expression related to the response for metallic elements such as Al, Fe and Zn.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-3040.2003.01074.x
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  • 6
    Electronic Resource
    Electronic Resource
    Purification and characterization of an unusually large fatty acid synthase from Mycobacterium tuberculosis var. bovis BCG
    Amsterdam : Elsevier
    Archives of Biochemistry and Biophysics 295 (1992), S. 318-326 
    Details
    ISSN: 0003-9861
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0003-9861(92)90524-Z
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  • 7
    Electronic Resource
    Electronic Resource
    Stopped-flow kinetic study of antioxidant activity and vitamin E regeneration reaction of reduced ubiquinone-10 in solution
    Amsterdam : Elsevier
    Free Radical Biology and Medicine 9 (1990), S. 58 
    Details
    ISSN: 0891-5849
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0891-5849(90)90373-Q
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  • 8
    Electronic Resource
    Electronic Resource
    Excitation of γ-Rays by Fast Neutrons (1936)
    [s.l.] : Nature Publishing Group
    Nature 137 (1936), S. 398-398 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN the course of experiments on the excitation of γ-rays by slow neutrons already reported, we have noticed that in some cases an appreciable amount of observed γ-rays was due to fast neutrons. Recently, we have investigated the emission of γ-rays by the bombardment of fast neutrons, and have ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/137398a0
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  • 9
    Electronic Resource
    Electronic Resource
    Energy of γ-Rays excited by Slow Neutrons (1936)
    [s.l.] : Nature Publishing Group
    Nature 137 (1936), S. 186-186 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN a previous letter [NATURE, Jan. 4, p. 30] we have reported briefly the result of experiments determining the mean cross-section for the recombination of the proton with a ‘slow neutron’ to form a deuteron. As the continuation of it, we have recently measured the energy of a quantum of γ-rays ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/137186a0
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  • 10
    Electronic Resource
    Electronic Resource
    Recombination of Neutron with Proton (1936)
    [s.l.] : Nature Publishing Group
    Nature 137 (1936), S. 30-31 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN further experiments on γ-rays excited by neutrons, we have recently measured a change of the number of kicks of a counter as a function of the thickness of the water sheets, 10 cm. × 15 cm., in cross-section, inserted between the neutron source and the counter. The experimental method was ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/137030a0
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