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  • 1
    Online Resource
    Online Resource
    Modern ocean floor processes and the geological record (1998)
    Details Availability
    Keywords: Ocean bottom ; Submarine geology ; Marine biology ; Sea-floor spreading ; Hydrothermal deposits ; Marine geophysics ; Sea-floor spreading ; Hydrothermal deposits ; Meeresgeologie ; Aufsatzsammlung ; Ozeanische Erdkruste ; Meeresboden ; Plattentektonik ; Seafloor spreading ; Mittelozeanischer Rücken ; Meeresgeologie ; Meeresbiologie ; Hydrothermale Phase ; Seafloor spreading
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (VIII, 303 Seiten)
    ISBN: 1862390231
    Series Statement: Geological Society special publication 148
    URL: http://sp.lyellcollection.org/content/148/1
    URL: https://external.dandelon.com/download/attachments/dandelon/ids/DE011825C6C9F4819DE01C1257392003D6C33.pdf
    DDC: 551.46084
    Language: English
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  • 2
    Electronic Resource
    Electronic Resource
    Effects of frequency and magnetic field scaling on the superconducting electron cyclotron resonance ion source at MSU-NSCL (1996)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 67 (1996), S. 4109-4113 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A series of systematic tests have been carried out on the superconducting electron cyclotron resonance ion source SCECRIS at the Michigan State University National Superconducting Cyclotron Laboratory in order to better understand the role of different parameters which determine the performance of these sources. A relevant part of these tests has been focused on the role of magnetic field and microwave frequency, with the goal of demonstrating the capability of low frequency electron cyclotron resonance ion sources to produce high ion charge states, in spite of their relative low plasma density. This goal can be achieved using a very high magnetic confining field, according to the concept of a high B mode. A comparison of the source performance at 2.45 and 6.4 GHz for different levels of magnetic field is described in this article. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1147556
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  • 3
    Electronic Resource
    Electronic Resource
    Volume scaling and magnetic field scaling on SC-ECRIS at MSU-NSCL (1996)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 67 (1996), S. 155-160 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The application of the high B mode concept has allowed an effective upgrading of the superconducting electron cyclotron resonance (ECR) ion source SC-ECRIS, which is now one of the best operating ECR ion sources in the world in terms of highly charged ion production. To increase the high charge state intensities and the total extracted current we tried to enlarge the plasma volume, but no clear evidence of volume effects was substantially achieved. We also tried to increase the magnetic field of the trap. The theory which led to these experiments is outlined in the following along with the results of tests using larger plasma volumes and tests with larger magnetic field. Even if the theoretical basis is not always well established, the beneficial effect of magnetic field enhancement on ECR source performances is confirmed. The capability of superconducting ECR ion sources to get higher results with respect to room temperature source by means of a higher and variable hexapolar field is underlined. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1146563
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  • 4
    Electronic Resource
    Electronic Resource
    The study of a 2.45 GHz plasma source as a plasma generator for the SCECR electron cyclotron resonance ion source : Proceedings of 5th international conference on ion sources (1994)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 65 (1994), S. 1135-1137 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The 2.45 GHz plasma source is a multicusp electron cyclotron resonance source with a tuned single mode microwave cavity. This is a bright plasma source with a well characterized operating mode and plasma parameters [A. K. Srivastava, et al., Rev. Sci. Instrum. 63, 2556 (1992); A. K. Srivastava and J. Asmussen, J. Vac. Sci. Technol. A 11, 1307 (1993)]. The superconducting electron cyclotron resonance (SCECR) is a fully superconducting, hexapole stabilized tandem mirror ion source with a multimode microwave cavity. It is a high charge state ion source with extensive beam diagnostics [T. A. Antaya, Nucl. Instrum. Methods B 40/41, 1024 (1989)]. The coupling of these two sources permits a number of fundamental studies important to both classes of ion sources. The 2.4 GHz plasma source will be used to study the effects of ion or electron (or both) density enhancement on the charge state distribution, total extracted current, and ion energy distributions of the SCECR. The SCECR in turn will be used as a test stand to measure directly the ion distribution and beam characteristics of the 2.45 GHz plasma source. The first results with this hybrid ion source will be presented at this conference.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1145038
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  • 5
    Electronic Resource
    Electronic Resource
    MATERNAL ANAEMIA AND FETAL BIRTHWEIGHT (1973)
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 80 (1973), S. 0 
    Details
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The pattern of fetal birthweight distribution was examined in singleton babies bora to several groups of pregnant Nigerian women: 43 of them were anaemic throughout pregnancy and also at delivery; 142 had been successfully treated for anaemia during pregnancy; 35 had sickle-cell anaemia; and 65 served as healthy controls. The causes of anaemia were haemolysis from malaria, folate deficiency and haemoglobinopathies. When other factors known to reduce fetal birthweight were excluded, it was found that maternal anaemia (haematocrit less than 30 per cent) was itself associated with retardation of fetal growth and that this was most marked in the presence of sickle-cell anaemia. If, at the end of pregnancy, maternal anaemia still remained uncorrected, then a 2 per cent drop in maternal haematocrit reduced fetal birthweight by about 100 g.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-0528.1973.tb11221.x
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  • 6
    Electronic Resource
    Electronic Resource
    Initial emittance measurements of the superconducting electron cyclotron resonance at NSCL : Proceedings of fifth international conference on ion sources (1994)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 65 (1994), S. 1138-1140 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We report on preliminary emittance measurements of oxygen and argon ions extracted from the superconducting electron cyclotron resonance (SCECR). For oxygen, charge states 1+ through 8+ have been measured for 100% intensity with the SCECR tuned to maximize highly charged ions, at a 10 kV extraction voltage. For argon, charge states 6+ through 14+ have been measured under the same conditions. For both species, both normalized and unnormalized emittances show the same trend—increasing with charge Q for low charge, and falling sharply for highly charged ions. The increase in emittance with Q for low Q implies an expected magnetic field dependence. The decreasing emittance for high Q is unexpected, and possible explanations for this effect will be discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1145039
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  • 7
    Electronic Resource
    Electronic Resource
    Obstetric fistula: one social calamity too many (1983)
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 90 (1983), S. 0 
    Details
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-0528.1983.tb08932.x
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  • 8
    Electronic Resource
    Electronic Resource
    PREGNANCY IN ABNORMAL HAEMOGLOBINS CC, S-THALASSAEMIA, SF, CF, DOUBLE HETEROZYGOTES (1972)
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 79 (1972), S. 0 
    Details
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: In 12 years, 90 pregnancies were studied in 51 Nigerians with the following abnormal haemoglobin types: C homozygotes (39 patients), S-β-Thalassaemia (5 patients), high fetal haemoglobin combined with haemoglobin S (4 patients) double heterozygotes (2 patients) and high fetal haemoglobin combined with haemoglobin C (1 patient). There were no maternal deaths.Homozygous C haemoglobin is associated with anaemia and splenomegaly. High fetal haemoglobin combined with S, or C, and also double heterozygotes are apparently innocuous in pregnancy. Therefore, no specific treatment is required in these haemoglobin types, apart from the prevention of anaemia by folic acid supplements in all cases, with the addition of oral iron and antimalarial drugs in areas where iron deficiency anaemia is common and malaria is holoendemic.By contrast patients with haemoglobin S-β-Thalassaemia require close supervision throughout pregnancy since this haemoglobinopathy is associated with anaemia, bone pain crises and an increased risk of postpartum haemorrhage. However, it is less morbid in comparison with haemoglobin SS and SC.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-0528.1972.tb14178.x
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  • 9
    Electronic Resource
    Electronic Resource
    THE HAEMATOCRIT RATIO IN SEVERE ANAEMIA IN PREGNANCY (1968)
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 75 (1968), S. 0 
    Details
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-0528.1968.tb02021.x
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  • 10
    Electronic Resource
    Electronic Resource
    SUCCESSFUL PREGNANCY IN A PATIENT WITH ADRENOGENITAL SYNDROME (1966)
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 73 (1966), S. 0 
    Details
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-0528.1966.tb05198.x
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