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  • 2000-2004  (4)
  • 1955-1959  (3)
  • 1930-1934  (1)
  • 1
    Electronic Resource
    Electronic Resource
    A mineral equilibria study of the hydrothermal alteration in mafic greenschist facies rocks at Kalgoorlie, Western Australia (2003)
    Oxford, UK : Blackwell Science Inc
    Journal of metamorphic geology 21 (2003), S. 0 
    Details
    ISSN: 1525-1314
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: The influx of a H2O–CO2-dominated fluid into actinolite-bearing metabasic rocks during greenschist facies metamorphism in the Kalgoorlie area of Western Australia resulted in a zoned alteration halo around inferred fluid conduits that contain gold mineralisation. The alteration halo is divided into two outer zones, the chlorite zone and the carbonate zone, and an inner pyrite zone adjacent to the inferred fluid conduits. Reaction between the fluid and the protolith resulted in the breakdown of actinolite and the development of chlorite, dolomite, calcite and siderite. In addition, rocks in the pyrite zone developed muscovite-bearing assemblages as a consequence of the introduction of potassium by the fluid. Mineral equilibria calculations undertaken using the computer software thermocalc in the model system Na2O–CaO–K2O–FeO–MgO–Al2O3–SiO2–H2O–CO2 show that mineral assemblages in the outer zones of the alteration halo are consistent with equilibrium of the protoliths with a fluid of composition XCO2 = CO2/(CO2 + H2O) = 0.1–0.25 for temperatures of 315–320 °C. The inner zone of the alteration halo reflect equilibrium with a fluid of composition XCO2≈ 0.25. Fluid-rock buffering calculations show that the alteration halo is consistent with interaction with a single fluid composition and that the zoned structure of the halo reflects the volume of this fluid with which the rocks reacted. This fluid is likely to have also been the one responsible for the gold mineralisation at Kalgoorlie.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1525-1314.2003.00454.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    A NEW METHOD OF MEASURING THE EARTH'S MAGNETIC FIELD (1956)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 4 (1956), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: This paper describes the measurement of the Earth's total magnetic field by a determination of the frequency of free precession around this field of the protons in a sample of water. The angular frequency of precession, ω, is related to the field F by the relationship ω=γpF where γp is the gyromagnetic ratio of the proton.A bottle of water is magnetised in a direction approximately at right angles to the earth's field, by passing a current through a coil wound around the bottle. The current is switched off rapidly, leaving the magnetic moment vector to precess around the earth's field direction, inducing in the coil a small alternating voltage. This voltage is amplified and its frequency measured by means of a counter. The accuracy of measurement of the total field is estimated at ± 0.5γ.In addition to the total field value, the form of the signal voltage contains information on the field gradient across the sample.Simple theory, experimental details and results are given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1956.tb01392.x
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  • 3
    Electronic Resource
    Electronic Resource
    High resolution magnetic force microscopy using focused ion beam modified tips (2002)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 81 (2002), S. 865-867 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Atomic force microscope tips coated by the thermal evaporation of a magnetic 30 nm thick Co film have been modified by focused ion beam milling with Ga+ ions to produce tips suitable for magnetic force microscopy. Such tips possess a planar magnetic element with high magnetic shape anisotropy, an extremely high aspect ratio of greater than 30:1, and an end radius of less than 25 nm. These tips have been used in a commercial atomic force microscope under ambient conditions to obtain 30 nm resolution magnetic images of an established CoNi/Pt multilayer reference sample. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1497434
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  • 4
    Electronic Resource
    Electronic Resource
    Role of CO 2 in the formation of gold deposits (2004)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 429 (2004), S. 860-863 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Much of global gold production has come from deposits with uneconomic concentrations of base metals, such as copper, lead and zinc. These ‘gold-only’ deposits are thought to have formed from hot, aqueous fluids rich in carbon dioxide, but only minor significance has been attached to ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nature02644
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  • 5
    Electronic Resource
    Electronic Resource
    A Logarithmic Time Scale for the Evolution Process (1958)
    [s.l.] : Nature Publishing Group
    Nature 181 (1958), S. 1652-1653 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN a recent article Sir Julian Huxley1 made "in passing" a plea for a rational time unit and himself proposed the "cron" : equivalent to a million years and to be modified by the usual metric multiples and sub-multiples (for example, one millieron would signify a millennium). This certainly ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1811652a0
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  • 6
    Electronic Resource
    Electronic Resource
    The Dominions and the United Kingdom (1931)
    Cambridge : Cambridge University Press
    The @Cambridge law journal 4 (1931), S. 164-173 
    Details
    ISSN: 0008-1973
    Source: Cambridge Journals Digital Archives
    Topics: Law
    Notes: The relationship between the Dominions and the Crown and the Imperial Parliament presents questions of great difficulty. At the present time the Dominions are, just as the Colonies, subject to the legal—though not to the political—supremacy of the Imperial Parliament, the Parliament of the United Kingdom. Though this supremacy has for many years not been exercised positively, i.e. by the passing of Acts affecting a Dominion, except at the request of such Dominion, e.g. at the request of Canada to amend the British North America Act, 1867, yet it still exists, inasmuch as there are in force Acts of the Imperial Parliament (especially the Acts creating the Dominion Constitutions) which apply to the Dominions, and the courts would be compelled to hold any Dominion legislation conflicting with such Acts to be inoperative.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1017/S000819730013291X
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Allografting for indolent lymphoid neoplasms (2000)
    Springer
    Annals of oncology 11 (2000), S. 59-61 
    Details
    ISSN: 1569-8041
    Keywords: allogeneic bone marrow transplantation ; indolent lymphoid neoplasms
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background:Allogeneic bone marrow transplantation (BMT) has beenused in patients with low-grade lymphoma (LGL) and chronic lymphocyticleukemia (CLL) with the goal of achieving long-term disease-free survival. Patients and methods:Twenty-nine patients with these diagnoses(LGL = 19, CLL = 10) received allogeneic BMT between September 1995 andJanuary 1999. Median age was 42 (range 20–52) years. Twenty-three oftwenty-nine patients (79%) were Ann Arbor or Rai stage IV at the timeof transplant; twenty-four (83%) had never achieved complete remission(CR). Donor source was HLA-matched sibling (20), unrelated (8) and syngeneic(1). Results:Seventeen patients are currently alive, a median of 29months (range 1–85) post-BMT with a median KPS of 90%.Twenty-three of twenty-seven evaluable patients (85%) achieved CRpost-BMT. Six patients had refractory/recurrent disease. Death occurredrelated to transplant complications in eight patients and underlying diseasein four. Overall and event-free survival for the whole group is 51% and44%, respectively. Conclusions:Allogeneic BMT for young patients with advanced stageLGL or CLL is a feasible strategy that can result in achievement of long-termdisease-free survival.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008379605137
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  • 8
    Electronic Resource
    Electronic Resource
    A Difference in the Physiology of the Large Intestine between European and Indigenous Cattle in the Tropics (1957)
    [s.l.] : Nature Publishing Group
    Nature 180 (1957), S. 552-553 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] It had already been found that there was a difference between the faeces of the two animals when E. Brauwer and E. J. v. Weerden1 published their investigations on the osmotic pressure of the gut contents of grades. We then determined freezing-point depressions and dry matters of the contents of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/180552a0
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