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  • 1
    Electronic Resource
    Electronic Resource
    Adducted thumb syndrome (1983)
    Springer
    European journal of pediatrics 141 (1983), S. 122-126 
    Details
    ISSN: 1432-1076
    Keywords: Adducted thumb syndrome ; Congenital myopathy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report on a female newborn baby with a “myopathic” stiff face, open mouth, high-arched palate, microgenia, generalized muscular hypotonia, limited extension of elbows, wrists and knees, flexed adducted thumbs, velopharyngeal insufficiency, and hypertrichosis. Death occurred at 3 months due to respiratory insufficiency. Muscular biopsy revealed myopathic abnormalities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00496805
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  • 2
    Electronic Resource
    Electronic Resource
    Teachers' choices of content and context in computer-education courses
    Amsterdam : Elsevier
    Computers and Education 21 (1993), S. 17-23 
    Details
    ISSN: 0360-1315
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Education
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0360-1315(93)90043-I
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  • 3
    Electronic Resource
    Electronic Resource
    Zur Luminiszenz von Cr(3)-Verbindungen (1966)
    Springer
    Theoretical chemistry accounts 6 (1966), S. 272-277 
    Details
    ISSN: 1432-2234
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Whereas 2.4 is likely to be an upper limit for theDq/B-value of Cr(3)-complexes which show fluorescence the existence of a lower bound is rather unlikely. Experimental evidence suggests that the energy difference between the minima of the2 E g- and the4 T 2g-potential curves is one of the factors determining the relative intensities of phosphorescence and fluorescence.
    Abstract: Résumé Alors que 2,4 apparaît comme une limite supérieure du rapportDq/B pour les complexes fluorescents de Cr(3), l'existence d'une limite inférieure est peu probable. L'évidence expérimentale suggère que l'intensité relative de la phosphorence et de la fluorescence est déterminée par la différence d'énergie entre les minima des courbes de potentiel des états2 E g et4 T 2g .
    Notes: Zusammenfassung Während 2,4 wahrscheinlich die obere Grenze für denDq/B-Wert fluoreszierender Cr(3)Komplexe ist, gibt es für die Existenz eines unteren Grenzwerts keine Anzeichen. Experimentelle Ergebnisse legen nahe, daß das Verhältnis von Phosphoreszenz- zu Fluoreszenzemission durch die relative Höhe der Minima der2 E g- und4 T 2g-Potentialkurven bestimmt wird.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02394704
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  • 4
    Electronic Resource
    Electronic Resource
    Erratum (1966)
    Springer
    Theoretical chemistry accounts 6 (1966), S. 452-452 
    Details
    ISSN: 1432-2234
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00528471
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  • 5
    Electronic Resource
    Electronic Resource
    Polarisierte Kristallspektren einiger Hexaharnstoffkomplexe bei tiefen Temperaturen (1972)
    Springer
    Theoretical chemistry accounts 24 (1972), S. 207-215 
    Details
    ISSN: 1432-2234
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Gegenstand der vorliegenden Untersuchungen sind die polarisierten Absorptionsspektren der Einkristalle Ti3+∶Alha6X3 (X∶Cl, Br, J), Cr3+∶Alha6(ClO4)3 und Crha6J3 im Wellenlängenbereich von 7500 Å bis 3500 Å zwischen Zimmertemperatur und der Temperatur des flüssigen Heliums. Makroskopisch gehören die Kristalle zur KlasseD 3d , das Metallion sitzt auf einem Platz der MikrosymmetrieD 3. Die aus den Spektren entnommenen Werte für den kubischen ParameterDq und die trigonalen Parameterν undν′ werden (soweit möglich) mitgeteilt. Die Tiha 6 3+ -Komplexe sind im angeregten trigonalen2 E-Zustand stark Jahn-Teller verzerrt; die Verzerrung im Grundzustand scheint von dem an das Komplexion gebundenen Anion abzuhängen.
    Abstract: Résumé Article consacré aux spectres d'absorption polarisée à basse température de monocristaux Ti3+∶Al(Ur)6X3 (X∶Cl, Br, I), Cr3+∶Al(Ur)6(ClO4)3 et Cr(Ur)6I3 dans le domaine des longueurs d'onde de 7500 Å à 3500 Å. Le groupe poctuel cristallin estD 3d et les ions métalliques occupent les sites de symétrieD 3. On donne les valeurs expérimentales du paramètre cubiqueDq et des paramètres trigonauxν etν′. Les complexes hexauréetitane (III) sont fortement déformés par effet Jahn-Teller dans l'état excité2 E. La déformation à l'état fondamental dépend vraisemblablement de l'anion.
    Notes: Abstract The present paper deals with the low-temperature polarized absorption spectra of single crystals Ti3+∶Al(ur)6X3 (X∶Cl, Br, I), Cr3+∶Al(ur)6 (ClO4)3 und Cr(ur)6I3 in the wavelength range from 7500 Å to 3500 Å. The crystal point group isD 3d , the metal ions occupy sites ofD 3 symmetry. Experimental values of the cubic parameterDq and the trigonal parametersν andν′ are reported. The hexaureatitanium(III)-complexes are strongly Jahn-Teller-distorted in the2E excited state. The distortion in the ground state is likely to depend on the anion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00641400
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  • 6
    Electronic Resource
    Electronic Resource
    Polarisierte Kristallspektren einiger Hexaharnstoffkomplexe bei tiefen Temperaturen (1972)
    Springer
    Theoretical chemistry accounts 24 (1972), S. 216-224 
    Details
    ISSN: 1432-2234
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Lumineszenzspektren der Verbindungen Crha6J3, Crha 6 * J3 (ha* = Deuteroharnstoff), Cr3+∶Mha6J3 und Cr3+∶Mha6(ClO4)3 (M∶Al, Ga) werden bei Stickstofftemperatur und der Temperatur des flüssigen Heliums untersucht. Die Anregung erfolgt über den4 T 2-Zustand. Die Aufspaltung des2 E-Zustandes wird anhand der beiden Null-Null-ÜbergängeE 1/2→4 A 2,E 3/2→4 A 2 (Chrom-Dublett) diskutiert. Aus dem Isotopieeffekt und einem Vergleich mit IR-Messungen können die Begleitbanden als angeregte Schwingungen des Grundzustandes4 A 2 gedeutet werden. Im Mischkristall Cr3+:Gaha6J3 wird eine deutliche Aufspaltung der längerwelligen Chrom-Dublett-Bande beobachtet.
    Notes: Abstract The luminescence spectra of the compounds Cr ur6I3, Cr ur 6 * I3 (ur* = deuterated urea), Cr3+∶M ur6I3 and Cr3+∶M ur6(ClO4)3 (M∶Al; Ga) are studied at temperatures of liquid N2 and He. With the He-Ne-laser as excitation source, the4 T 2-level will be excited. The splitting of the2 E-level will be discussed. It results in two zero-phonon transitionsE 1/2→4A2;E 3/2→4 A 2. From isotope effect and a comparison with IR-data, the side bands can be assigned to the excited vibrations of the ground level4 A 2. In mixed crystalls Cr3+∶Ga ur6I3 an important splitting of the chrom dublett at longer wavelengths would be observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00641401
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  • 7
    Electronic Resource
    Electronic Resource
    Zur Luminiszenz von Cr(3)-Verbindungen (1966)
    Springer
    Theoretical chemistry accounts 6 (1966), S. 272-277 
    Details
    ISSN: 1432-2234
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Whereas 2.4 is likely to be an upper limit for the Dq/B-value of Cr(3)-complexes which show fluorescence the existence of a lower bound is rather unlikely. Experimental evidence suggests that the energy difference between the minima of the 2 E g- and the 4 T 2g-potential curves is one of the factors determining the relative intensities of phosphorescence and fluorescence.
    Abstract: Résumé Alors que 2,4 apparaît comme une limite supérieure du rapport Dq/B pour les complexes fluorescents de Cr(3), l'existence d'une limite inférieure est peu probable. L'évidence expérimentale suggère que l'intensité relative de la phosphorence et de la fluorescence est déterminée par la différence d'énergie entre les minima des courbes de potentiel des états 2 E g et 4 T 2g .
    Notes: Zusammenfassung Während 2,4 wahrscheinlich die obere Grenze für den Dq/B-Wert fluoreszierender Cr(3)Komplexe ist, gibt es für die Existenz eines unteren Grenzwerts keine Anzeichen. Experimentelle Ergebnisse legen nahe, daß das Verhältnis von Phosphoreszenz- zu Fluoreszenzemission durch die relative Höhe der Minima der 2 E g- und 4 T 2g-Potentialkurven bestimmt wird.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00000007
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  • 8
    Electronic Resource
    Electronic Resource
    Dijet production cross-section and fragmentation of jets produced inp p collisions at $$\sqrt s $$ =63 GeV (1986)
    Springer
    The European physical journal 30 (1986), S. 27-43 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present stdies of events triggered on two high-p T jets, produced inpp collisions at the CERN Intersecting Storage Rings (ISR) at $$\sqrt s $$ =63 GeV, using a large solid angle calorimeter. The cross-section for producing two jets is measured in the dijet mass range 17–50 GeV/c2. A high-statistics sample of dijet events, where each jet has transverse energy above 10 GeV, is used to study the structure of jets and the associated event. We find the longitudinal fragmentation function to be similar to that of jets emerging frome + e − collisions but considerably harder than that observed at the Super Proton Synchrotron (SPS) $$p\bar p$$ Collider. A steepening of the fragmentation function is observed when increasing the jet energy. Studies of the charge distribution in jets show that these predominantly originate from fragmenting valence quarks. The transverse energy and particle flows are presented as functions of the azimuthal distance from the jet axis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01560675
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  • 9
    Electronic Resource
    Electronic Resource
    Three-jet production inpp collisions at $$\sqrt s = 63 GeV$$ and a determination of α s (1986)
    Springer
    The European physical journal 32 (1986), S. 317-334 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We have studiedpp collisions at the CERN ISR at $$\sqrt s = 63 GeV$$ using a jet trigger. We demonstrate that a sample of well-separated triple high-p T jet events can be described as due to the QCD bremsstrahlung process. The energy flow of these 3-jet events is well described by an independent fragmentation model, with a gluon-jet transverse width 33% greater than the quark-jet width. From the ratio of the 3- and 2-jet production crosssections the strong coupling is determined to lowest order in QCD. We find α s =0.18±0.03 (stat.) ±0.04 (stst.). The error does not include the theoretical uncertainty in the fragmentation scheme. We compare our results with measurements at the SPS Collider and discuss the different methods used.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01551827
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  • 10
    Electronic Resource
    Electronic Resource
    Double parton scattering inpp collisions at $$\sqrt s = 63$$ GeV (1987)
    Springer
    The European physical journal 34 (1987), S. 163-174 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In a study ofpp collisions at $$\sqrt s = 63$$ GeV with more than 29 GeV total transverse energy emitted into 1.8 units of rapidity in the central region, we have extracted a sample of 4-jet events and compared it with models of the two sources of 4-jet production: double bremsstrahlung and double parton scattering. The data cannot be described by bremsstrahlung alone, and we extract the fraction of 4-jet events attributed to double parton scattering for various definitions of the 4-jet sample. We determine the double parton scattering/2-jet yield ratio, and this leads to a determination of the proton radius. We discuss the implications of our observations for the general understanding of high-ΣE T events.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01566757
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    Paper (German National Licenses)
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