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  • 1
    Series available for loan
    Series available for loan
    Use of an "automatic sulphur titrator" in rock and mineral analysis : determination of sulphur, total carbon, carbonate and ferrous iron (1972)
    Ottawa : Geological Survey of Canada
    Associated volumes
    Details Availability
    Call number: SR 90.0008(72-31)
    In: Paper
    Type of Medium: Series available for loan
    Pages: V, 22 S.
    Series Statement: Paper / Geological Survey of Canada 72-31
    Language: English
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 2
    Series available for loan
    Series available for loan
    An improved lithium-fluoborate scheme for fourteen elements; Pt. 5. (1974)
    Associated volumes
    Details Availability
    Call number: SR 90.0008(74-19)
    In: Analysis of rocks and minerals by atomic absorption spectroscopy
    Type of Medium: Series available for loan
    Pages: 26 S.
    Series Statement: 74-19
    Language: English
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 3
    Series available for loan
    Series available for loan
    A procedure to lower the limits of detection for silver, cadmium and lead in the analysis of geological materials by atomic absorption spectrometry (1988)
    Ottawa : Geological Survey of Canada
    Associated volumes
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    Call number: SR 90.0008(87-27)
    In: Paper
    Type of Medium: Series available for loan
    Pages: 5 S.
    ISBN: 0660538431
    Series Statement: Paper / Geological Survey of Canada 87-27
    Language: English
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 4
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    Line and continuum radiative transfer modelling of AA Tau (2014)
    Oxford University Press
    Details
    Publication Date: 2014-07-19
    Description: We present photometric and spectroscopic models of the Classical T Tauri star AA Tau. Photometric and spectroscopic variability present in observations of AA Tau is attributed to a magnetically induced warp in the accretion disc, periodically occulting the photosphere on an 8.2 d time-scale. Emission line profiles show signatures of both infall, attributed to magnetospherically accreting material, and outflow. Using the radiative transfer code torus , we have investigated the geometry and kinematics of AA Tau's circumstellar disc and outflow, which is modelled here as a disc wind. Photometric models have been used to constrain the aspect ratio of the disc, the offset angle of the magnetosphere dipole with respect to the stellar rotation axis, and the inner radius of the circumstellar disc. Spectroscopic models have been used to constrain the wind and magnetosphere temperatures, wind acceleration parameter, and mass-loss rate. We find that observations are best fitted by models with a mass accretion rate of 5 10 –9 M  yr –1 , a dipole offset of between 10° and 20°, a magnetosphere that truncates the disc from 5.2 to 8.8 R * , a mass-loss-rate to accretion-rate ratio of ~0.1, a magnetosphere temperature of 8500–9000 K, and a disc-wind temperature of 8000 K.
    Print ISSN: 0035-8711
    Electronic ISSN: 1365-2966
    Topics: Physics
    Published by Oxford University Press
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  • 5
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    A hot Jupiter orbiting a 2-million-year-old solar-mass T Tauri star (2016)
    Springer Nature
    In: Nature
    Details
    Publication Date: 2016-06-30
    Description: A hot Jupiter orbiting a 2-million-year-old solar-mass T Tauri star Nature 534, 7609 (2016). doi:10.1038/nature18305 Authors: J. F. Donati, C. Moutou, L. Malo, C. Baruteau, L. Yu, E. Hébrard, G. Hussain, S. Alencar, F. Ménard, J. Bouvier, P. Petit, M. Takami, R. Doyon & A. Collier Cameron Hot Jupiters are giant Jupiter-like exoplanets that orbit their host stars 100 times more closely than Jupiter orbits the Sun. These planets presumably form in the outer part of the primordial disk from which both the central star and surrounding planets are born, then migrate inwards and yet avoid falling into their host star. It is, however, unclear whether this occurs early in the lives of hot Jupiters, when they are still embedded within protoplanetary disks, or later, once multiple planets are formed and interact. Although numerous hot Jupiters have been detected around mature Sun-like stars, their existence has not yet been firmly demonstrated for young stars, whose magnetic activity is so intense that it overshadows the radial velocity signal that close-in giant planets can induce. Here we report that the radial velocities of the young star V830 Tau exhibit a sine wave of period 4.93 days and semi-amplitude 75 metres per second, detected with a false-alarm probability of less than 0.03 per cent, after filtering out the magnetic activity plaguing the spectra. We find that this signal is unrelated to the 2.741-day rotation period of V830 Tau and we attribute it to the presence of a planet of mass 0.77 times that of Jupiter, orbiting at a distance of 0.057 astronomical units from the host star. Our result demonstrates that hot Jupiters can migrate inwards in less than two million years, probably as a result of planet–disk interactions.
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Springer Nature
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  • 6
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    A new class of anthelmintics effective against drug-resistant nematodes (2008)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2008-03-14
    Description: Anthelmintic resistance in human and animal pathogenic helminths has been spreading in prevalence and severity to a point where multidrug resistance against the three major classes of anthelmintics--the benzimidazoles, imidazothiazoles and macrocyclic lactones--has become a global phenomenon in gastrointestinal nematodes of farm animals. Hence, there is an urgent need for an anthelmintic with a new mode of action. Here we report the discovery of the amino-acetonitrile derivatives (AADs) as a new chemical class of synthetic anthelmintics and describe the development of drug candidates that are efficacious against various species of livestock-pathogenic nematodes. These drug candidates seem to have a novel mode of action involving a unique, nematode-specific clade of acetylcholine receptor subunits. The AADs are well tolerated and of low toxicity to mammals, and overcome existing resistances to the currently available anthelmintics.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kaminsky, Ronald -- Ducray, Pierre -- Jung, Martin -- Clover, Ralph -- Rufener, Lucien -- Bouvier, Jacques -- Weber, Sandra Schorderet -- Wenger, Andre -- Wieland-Berghausen, Susanne -- Goebel, Thomas -- Gauvry, Noelle -- Pautrat, Francois -- Skripsky, Thomas -- Froelich, Olivier -- Komoin-Oka, Clarisse -- Westlund, Bethany -- Sluder, Ann -- Maser, Pascal -- England -- Nature. 2008 Mar 13;452(7184):176-80. doi: 10.1038/nature06722.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Novartis Centre de Recherche Sante Animale, CH-1566 St Aubin (FR), Switzerland. ronald.kaminsky@novartis.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18337814" target="_blank"〉PubMed〈/a〉
    Keywords: Aging ; Amino Acid Sequence ; Aminoacetonitrile/adverse effects/*analogs & ; derivatives/pharmacokinetics/*pharmacology ; Animals ; Anthelmintics/chemistry/*classification/pharmacokinetics/*pharmacology ; Caenorhabditis elegans/drug effects/genetics/metabolism ; Caenorhabditis elegans Proteins/chemistry/genetics/metabolism ; Cattle ; Cattle Diseases/drug therapy/parasitology ; *Drug Resistance/genetics ; Larva/drug effects/genetics ; Molecular Sequence Data ; Nematoda/*drug effects/genetics/physiology ; Parasitic Diseases, Animal/drug therapy/*parasitology ; Receptors, Nicotinic/chemistry/genetics/metabolism ; Sheep/parasitology ; Sheep Diseases/drug therapy/parasitology
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 7
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    Dual-mode operation of neuronal networks involved in left-right alternation (2013)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2013-07-03
    Description: All forms of locomotion are repetitive motor activities that require coordinated bilateral activation of muscles. The executive elements of locomotor control are networks of spinal neurons that determine gait pattern through the sequential activation of motor-neuron pools on either side of the body axis. However, little is known about the constraints that link left-right coordination to locomotor speed. Recent advances have indicated that both excitatory and inhibitory commissural neurons may be involved in left-right coordination. But the neural underpinnings of this, and a possible causal link between these different groups of commissural neurons and left-right alternation, are lacking. Here we show, using intersectional mouse genetics, that ablation of a group of transcriptionally defined commissural neurons--the V0 population--leads to a quadrupedal hopping at all frequencies of locomotion. The selective ablation of inhibitory V0 neurons leads to a lack of left-right pattern at low frequencies, mixed coordination at medium frequencies, and alternation at high locomotor frequencies. When ablation is targeted to excitatory V0 neurons, left-right alternation is present at low frequencies, and hopping is restricted to medium and high locomotor frequencies. Therefore, the intrinsic logic of the central control of locomotion incorporates a modular organization, with two subgroups of V0 neurons required for the existence of left-right alternating modes at different speeds of locomotion. The two molecularly distinct sets of commissural neurons may constrain species-related naturally occurring frequency-dependent coordination and be involved in the evolution of different gaits.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Talpalar, Adolfo E -- Bouvier, Julien -- Borgius, Lotta -- Fortin, Gilles -- Pierani, Alessandra -- Kiehn, Ole -- England -- Nature. 2013 Aug 1;500(7460):85-8. doi: 10.1038/nature12286. Epub 2013 Jun 30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Mammalian Locomotor Laboratory, Department of Neuroscience, Karolinska Institutet, Stockholm S-17177, Sweden.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23812590" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Extremities/*physiology ; Functional Laterality/genetics/*physiology ; Gait/genetics/physiology ; Homeodomain Proteins/genetics/metabolism ; Locomotion/genetics/*physiology ; Mice ; Nerve Net/*physiology ; Neural Inhibition ; Neurons/*physiology ; Spinal Nerves/cytology/physiology
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 8
    Electronic Resource
    Electronic Resource
    Influence of dye and protein location on photosensitization of the plasma membrane
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Biomembranes 1196 (1994), S. 172-180 
    Details
    ISSN: 0005-2736
    Keywords: 5'-Nucleotidase ; Glucose transport ; Membrane potential ; Photodynamic therapy ; Photosensitization ; Plasma membrane ; Proline transport ; Singlet oxygen
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0005-2736(94)00236-3
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  • 9
    Electronic Resource
    Electronic Resource
    Infrared conductivity versus doping from reflectivity in YBa"2Cu"3O"6"+"x and Nd"1"+"yBa"2"-"yCu"3O"6"+"x ceramics
    Amsterdam : Elsevier
    Physica C: Superconductivity and its applications 185-189 (1991), S. 1015-1016 
    Details
    ISSN: 0921-4534
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0921-4534(91)91731-I
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  • 10
    Electronic Resource
    Electronic Resource
    The Proteases and Pathogenicity of Parasitic Protozoa (1993)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Microbiology 47 (1993), S. 821-853 
    Details
    ISSN: 0066-4227
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.mi.47.100193.004133
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