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  • 1
    Electronic Resource
    Electronic Resource
    Titration of Elemental Sulfur with Solutions of Sodium Cyanide (1955)
    s.l. : American Chemical Society
    Analytical chemistry 27 (1955), S. 369-371 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac60099a011
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  • 2
    Electronic Resource
    Electronic Resource
    Transmitter precursors and metabolites in human ventricular cerebrospinal fluid (1976)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 26 (1976), S. 0 
    Details
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-4159.1976.tb01520.x
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  • 3
    Electronic Resource
    Electronic Resource
    Dynamic fluorescence Stokes shift of an acetylene-bridged donor–acceptor compound in alcohols at low temperatures (1995)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 102 (1995), S. 6456-6462 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The time-dependent fluorescence Stokes shift of p,p'-cyano thiomethyl diphenylacetylene in three different alcohols (1-propanol, 1-butanol, and 1-octanol) at room temperature was measured using time-correlated single photon counting and the spectral reconstruction method. These measurements were also performed with the probe in 1-propanol at low temperatures. The observed behavior is consistent with the dynamics of solvation of a polar excited state. As expected, the average solvation time increases with decreasing temperature and is correlated with solvent bulk viscosity down to 180 K. Apparent deviations observed at lower temperatures are attributed to the finite emission lifetime (≈1 ns) of the probe. A significant fast component (〈100 ps) is observed in the dynamic Stokes shift even at temperatures close to the freezing point of 1-propanol. Different mechanisms that could result in such a fast component are discussed. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.469360
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  • 4
    Electronic Resource
    Electronic Resource
    Models for Pathogenesis of Mycobacterium avium (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 797 (1996), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1996.tb52969.x
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  • 5
    Electronic Resource
    Electronic Resource
    In Vitro Models to Study Attachment and Invasion of Helicobacter pylori (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 797 (1996), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1996.tb52983.x
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  • 6
    Electronic Resource
    Electronic Resource
    Influence of saccadic eye movements on geniculostriate excitability in normal monkeys (1976)
    Springer
    Experimental brain research 25 (1976), S. 487-509 
    Details
    ISSN: 1432-1106
    Keywords: Saccadic eye movements ; Visual system ; “Corollary discharge” ; Primates
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Using permanently implanted electrodes in squirrel monkeys and macaques, transmission through the lateral geniculate nucleus (LGN) was assayed from the amplitude of potentials evoked in optic radiation by an electrical pulse applied to optic tract. Averaging of either individually or machine selected potentials, elicited at 0.3, 1.0, 20 or 50 Hz, in all cases showed a decrease in transmission ranging from 5–60 % in the period after saccadic eye movements made ad libitum. The suppression was greater in a patterned visual environment than in diffuse illumination, which in turn was greater than that occurring following saccades in the dark. Demonstration of the effect in darkness always required data averaging and never exceeded 20%. The effect was consistently greater in the magnocellular than parvocellular component. Suppression was often abruptly terminated and replaced by a facilitation of 5–15% about 100 msec after saccade detection. Comparable effects were observed for excitability of striate cortex tested by a stimulus pulse applied to optic radiation. In addition, sharply demarcated potentials inherently arising in LGN and striate cortex were found in association with saccades made even in total darkness. Neglecting a possible but dubious contribution from eye muscle proprioceptors, the experiments establish the existence of a centrally originating modulation of visual processing at both LGN and striate cortex in relation to saccadic eye movement in primates. This modulation may partially underlie the phenomenon of “saccadic suppression” and hasten the acquisition of a meaningful visual sample immediately following an ocular saccade. It remains uncertain as to how it may relate to similar or greater effects accompanying changes in alertness, or to fluctuations of unknown origin occurring sometimes semirhythmically at 0.05–0.03 Hz (Fig. 7).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00239783
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  • 7
    Electronic Resource
    Electronic Resource
    Intrapituitary fluid levels following haemorrhage: MRI appearances in 13 cases (1999)
    Springer
    Neuroradiology 41 (1999), S. 167-170 
    Details
    ISSN: 1432-1920
    Keywords: Key words Pituitary haemorrhage ; Fluid levels ; Magnet resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Demonstration of fluid levels on MRI is well recognised in cerebral haematomas, tumours and cysts. The occurrence of fluid levels within haemorrhagic pituitary tumours has not previously been described in detail. Evidence of haemorrhage was identified in 27 of 125 pituitary tumours. Fluid levels occurred in 13 of these haemorrhagic tumours. No association with histological type was identified. Recognised risk factors for haemorrhage were identified in half of the cases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340050725
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  • 8
    Electronic Resource
    Electronic Resource
    Use of an extension-assisting brace following anterior cruciate ligament reconstruction (1997)
    Springer
    Knee surgery, sports traumatology, arthroscopy 5 (1997), S. 6-9 
    Details
    ISSN: 1433-7347
    Keywords: Key words Anterior cruciate ; ligament reconstruction ; Extension ; deficit ; Extension-assisting brace
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Sports Science
    Notes: Abstract Despite changes in rehabilitation protocols, an extension deficit remains an important potential cause of significant morbidity following anterior cruciate ligament (ACL) reconstruction. An extension-assisting brace was designed using a limited motion brace and an elastic strap across a fulcrum on the anterior aspect of the knee joint. The effects of the brace were investigated in 40 patients undergoing primary ACL reconstruction using an autogenous central third patellar tendon graft. The patients were randomized either to use the brace in the first 6 weeks postoperatively or to undertake the same accelerated rehabilitation programme but without any brace, and they were reviewed at 4 months postoperatively. The following data were recorded: passive and active extension and flexion deficits compared with the non-operated limb, KT-1000 assessment of anterior laxity and isometric quadriceps and hamstring strength. There was no difference between the two groups for any of the recorded variables. This was largely attributed to satisfactory tunnel placement and emphasis on the restoration of extension and quadriceps function during the early postoperative rehabilitation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001670050016
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  • 9
    Electronic Resource
    Electronic Resource
    Formation and gelation of titania nanoparticles from AOT reverse micelles (1997)
    Springer
    Journal of sol gel science and technology 8 (1997), S. 65-69 
    Details
    ISSN: 1573-4846
    Keywords: nanocrystalline titania powder ; microemulsions ; reverse micelles ; AOT
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Titania nanoparticles have been produced by the controlled hydrolysis of tetraisopropyltitanate (TPT) in sodium bis(2-ethylhexyl)sulfosuccinate (AOT) reverse micelles. Particle formation and aggregation were investigated by static and dynamic light scattering and the chemical species by vibrational spectroscopy. The kinetics of particle formation and aggregation were controlled by varying [H2O]/[AOT] (w 0), [H2O]/[Ti(IV)] and [AOT]/[Ti(IV)]. Nanoparticles, with diameters〈10 nm, could be produced at relatively high Ti(IV) concentrations (up to 0.05 M). These nanoparticles aggregated into sols, with colloid sizes of 20 to 200 nm, eventually forming gelatinous precipitates. Different titania phases were produced, depending on the size of the micellar water pool; small pools (w 0〈6) yielded amorphous particles, while larger pools (w 0〉10) produced anatase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02436819
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  • 10
    Electronic Resource
    Electronic Resource
    Nuclear shadowing, diffractive scattering and low momentum protons in μXe interactions at 490 GeV (1995)
    Springer
    The European physical journal 65 (1995), S. 225-244 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The production of charged hadrons is studied in μXe and μD interactions at 490 GeV beam energy. The data were taken at the Tevatron at Fermilab with the E665 spectrometer, equipped with a streamer chamber as vertex detector. Differences between the μXe and μD data are explained by cascading of hadrons in the Xe nucleus. The average multiplicity of charged hadrons in μXe scattering is compared to previously published pXe scattering data and is found to be strongly reduced. This is traced back to the low number of ‘projectile’ collisions in μXe interactions. From a study of thex Bj dependence of hadron production in μXe scattering, and by considering events with a large rapidity gap, evidence is found for a significant contribution of diffractive scattering, which is enhanced in the kinematic region where shadowing of the cross section is observed. This result supports recent models in which diffractive scattering and nuclear shadowing are closely related.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01571879
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