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  • 1
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    Annotated record and detailed features of Mn deposits from R/V Bosei Maru Cruise GDP-8 stations (1974)
    PANGAEA
    In:  Supplement to: Shiki, Tsunemasa; Harada, K; Yoshida, H; Okuda, Y; Aoki, H; Hansen, Henry; Matsuo, K; Kobayashi, Kazuo; Takayama, Toshiaki (1974): Basaltic tuff obtained at the Daini-Kinan Seamount and acidic plutonic rocks collected at the Komabashi-Daini Seamount (in Japanese). Journal of the Geological Society of Japan, 80(10), 489-491, https://doi.org/10.5575/geosoc.80.489
    Details
    Publication Date: 2023-08-28
    Description: During the GDP-8 cruise of R/V Bosei-Maru, scientists from the Tokai University surveyed the Kinan seamount chain and the Kyushu-Palau Ridge in the Phillippine Sea. They dredged manganese nodules and ferromanganese crusts formed around basaltic tuff rocks and acid plutonic rock pebbles.
    Keywords: NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS
    Type: Dataset
    Format: application/zip, 2 datasets
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    DATA PANGAEA
  • 2
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    (Page 490) Detailed morphological features of manganese nodules selected from GDP-8-12 dredge station (1974)
    PANGAEA
    Details
    Publication Date: 2023-08-28
    Keywords: Bosei Maru; DEPTH, sediment/rock; Description; Dredge; DRG; Elevation of event; GDP-8; GDP-8-12; Latitude of event; Length; Longitude of event; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Philippine Sea; Sample ID; Shape; Thickness; Width
    Type: Dataset
    Format: text/tab-separated-values, 110 data points
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    DATA PANGAEA
  • 3
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    Annotated record of the detailed examination of Mn deposits from R/V Bosei Maru Cruise GDP-8 stations (1974)
    PANGAEA
    Details
    Publication Date: 2023-08-28
    Keywords: Bosei Maru; Deposit type; DEPTH, sediment/rock; Description; Dredge; DRG; Elevation of event; Event label; GDP-8; GDP-8-12; GDP-8-4; GDP-8-7; Latitude of event; Longitude of event; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Philippine Sea; Position; Quantity of deposit; Sample ID; Sediment type; Size; Substrate type; Uniform resource locator/link to image
    Type: Dataset
    Format: text/tab-separated-values, 25 data points
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    DATA PANGAEA
  • 4
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    Annotated record of the detailed examination of Mn deposits from R/V Hakuho Maru Cruise KH-74-4 stations (1976)
    PANGAEA
    In:  Supplement to: Harada, K; Nishida, Shiro (1976): Biostratigraphy of some marine manganese nodules. Nature, 260(5554), 770-771, https://doi.org/10.1038/260770a0
    Details
    Publication Date: 2023-08-28
    Description: Using scanning electron microscopy (SEM) the authors have examined the microtexture of Mn nodules. Previous researches using SEM observation on marine Mn nodules have revealed many characteristic features which may relate to their formation. They report the discovery of in situ calcareous nannoplankton fossils in a Mn nodule collected during the RV Hakuho-Maru Cruise KH-74-4, and present a preliminary calculation of the growth rate, using a biostratigraphic method. They also discuss the potential value of Mn nodule biostratigraphy in terms of deep sea palaeoenvironments.
    Keywords: Comment; Deposit type; DEPTH, sediment/rock; Description; Dredge; DRG; Hakuho-Maru; Identification; KH-74-4; KH74-4-16; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Pacific Ocean; Position; Quantity of deposit; Sediment type; Size; Substrate type; Uniform resource locator/link to image; Visual description
    Type: Dataset
    Format: text/tab-separated-values, 10 data points
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  • 5
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    Biostratigraphy of some marine manganese nodules (2016)
    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Details
    Publication Date: 2016-05-25
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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    PAPER (OA)
  • 6
    Electronic Resource
    Electronic Resource
    Localized stimulation of neural tissues in the brain by means of a paired configuration of time-varying magnetic fields (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 5862-5864 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A method of localized stimulation of the human brain is proposed. The basic idea is to concentrate induced eddy currents locally in the vicinity of a target in the cortex by a pair of coils which are positioned outside the head so that time-varying magnetic fields pass through the head in the opposite directions around a target. The eddy currents induced at the target are expected to flow together, which results in an increased current flow at the target. Spatial distributions of induced eddy currents are calculated in cubical and spherical volume conductor models by a finite element method. The results show that the current vectors make themselves two vortexes which flow together at the target. The current density at the target makes a peak which is higher by 2–3 times than current densities at nontarget regions. The validity of the proposed method is demonstrated by experiments using frog nerve-muscle preparations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342181
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  • 7
    Electronic Resource
    Electronic Resource
    Foucault imaging of superconducting fluxons (1999)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 85 (1999), S. 4096-4103 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The Foucault method, one of the classical Lorentz microscopy techniques, is here investigated in order to demonstrate its applicability to in-focus observations of superconducting fluxons. As the deflections involved are of the order of 10−5−10−6 rad, low-angle techniques, high brightness, coherent illumination, and a low aberration magnetic stage are needed. The first experimental results are presented and discussed in relation with a theoretical model for the fluxon which allows the interpretation of the main features of the observed patterns. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.370317
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  • 8
    Electronic Resource
    Electronic Resource
    Effective shielding for low-level magnetic fields (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 5696-5698 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: An effective method of shielding slowly varying low-level magnetic fields is presented. The key of this method is the use of soft magnetic materials with a highly rectangular B-H loop and the application of the shaking field to them. Metglas 2705M amorphous ribbon of about 22 μm in thickness was used in the experiments since it has almost vertical flanks in the dc B-H loop in as-prepared state and small coercivity Hc∼0.5 A/m. A shielding factor of the cylindrical case with a copper pipe inside (diameter : 60 mm; length : 100 mm) and with two crossed layers of the ribbon outside was measured against low-level disturbing fields of 10 Hz applied transversely to the case. Although the shielding factor was as small as 3.5 without shaking, it became higher than 150 under the shaking field of 1 kHz, 2.9 A/m(rms). This value is far better than that with Mumetal or 4-79 Mo-Permalloy. A shaking frequency as high as 1 kHz or higher makes it easy to suppress the leakage of the shaking field into the shielded space.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342278
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  • 9
    Electronic Resource
    Electronic Resource
    Planar inductors with a new coil configuration (abstract) : 35th annual conference on magnetism and magnetic materials (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 5368-5368 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: High-frequency (f≥1 MHz) magnetic power devices are key elements for developing compact and low-profile switching power supplies. Planar inductors with a flat coil are investigated,1–3 however, a problem arising from the use of a flat coil is not addressed. The problem is that normal components to the magnetic plate inevitably exist in the exciting fields from a flat coil and that those components induce severe in-plane eddy currents. The problem is most typical in the case of a spiral coil. In this paper, a new flat coil is proposed (see Fig. 1) for planar inductors which greatly improves the problem because paths of eddy currents are chopped up corresponding to the mesh size of the coil. It is obvious that density of eddy currents becomes small when the mesh size becomes fine. Sandwich planar inductors with a proposed coil (mesh coil) and a meander one were prepared for preliminary tests using pairs of Metglas 2705M amorphous ribbons of 50×50 mm2 and 100-μm copper wires, where the mesh size was 3 mm, equal to the pitch of the meander coil. Inductances at 1 MHz were 1.85 μH for the mesh coil and 2.25 μH for the meander one, whereas Qmax=5 at 6 MHz for the mesh coil and 4.5 at 2 MHz for the meander one. Advantages of the mesh coil may further become clear when it is made on the magnetic plates with thin insulating layer in between by IC or thick-film process.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.348033
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  • 10
    Electronic Resource
    Electronic Resource
    Measurement of trapped flux distribution in a high-Tc superconductor using a flux-gate magnetometer : 37th Annual conference on magnetism and magnetic materials (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 73 (1993), S. 5635-5637 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The distribution of the trapped flux was measured using a miniaturized flux-gate magnetometer with resolution as high as 0.46 mG at 77 K for a BiSrCaCuO high-Tc superconductor cooled down to 77 K in the presence of ac magnetic field (0.5–50 Hz) of 0.6 G in peak-to-peak and in-plane thermal gradient. The amplitude of the trapped flux decreased with increasing the frequency of ac magnetic field. The amplitude was as small as 2 mG for a 50 Hz ac field, and 43 mG for a 0.5 Hz ac field. The amplitude also became small when the cooling rate was made slow. A symbiotic combination of the high-Tc superconducting magnetic shield and the ferromagnetic one with magnetic shaking is proposed, in which merits of both can be enhanced.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.353621
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