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  • 1995-1999  (23)
  • 1960-1964  (5)
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  • 1
    Electronic Resource
    Electronic Resource
    Additions and Corrections - Inherently Dissymetric Chromphores. Optical Activity Associated with a Homoconjugated Diene. (1962)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 84 (1962), S. 5003-5003 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00883a639
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  • 2
    Electronic Resource
    Electronic Resource
    A new polymorphism of arylsulfatase A within the coding region (1996)
    Springer
    Human genetics 〈Berlin〉 98 (1996), S. 348-350 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract A 10-year-old boy with juvenile metachromatic leukodystrophy (MLD) presented with the 459 + 1G→A arylsulfatase A (ASA) mutation on one allele. To detect his complete genotype, the other ASA allele was sequenced and a T-to-C transition at nucleotide 376 in exon 2 was identified. This missense mutation results in a substitution of leucine 76 by proline. Of 20 MLD unrelated controls, 18 carried the L/P76 mutation either in the homozygous (n = 6) or heterozygous (n = 12) state. The presence or absence of L/P76 did not influence leukocyte ASA activity or urinary sulfatide excretion. Apparently, the substitution of leucine 76 by proline is a common ASA polymorphism, neither being related to MLD nor creating ASA pseudodeficiency. However, because of its frequency and location, L/P76 may be of particular importance in genetic studies requiring the differentiation of the ASA alleles within a kindred. Further studies are directed to the as yet unresolved genotype of the index case with juvenile MLD.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004390050221
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Arthrolyses in elbow stiffness (1998)
    Springer
    European journal of orthopaedic surgery & traumatology 8 (1998), S. 107-123 
    Details
    ISSN: 1432-1068
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01682627
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    A multiphoton polarization study of the Rydberg states of OCS in the 70 500–74 500 cm−1 energy region (1996)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 105 (1996), S. 6147-6153 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The polarization dependence of the (2+1) and (3+1) resonance enhanced multiphoton ionization of OCS have been investigated in the 70 500–74 500 cm−1 energy region. This region contains a complex system of bands arising from the excitation of the 4p Rydberg states. The symmetry of most of the observed bands have been unambiguously determined based on the intensity changes of the two and three photon resonant spectra using both linearly and circularly polarized light. These results generally confirm the assignments suggested in a previous study. New bands have also been observed and some new assignments are proposed. The vibrational frequencies ν1, ν2, and ν3 of the Rydberg states in that energy region are determined. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.472474
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  • 5
    Electronic Resource
    Electronic Resource
    An experimental investigation of the nf Rydberg states of carbon disulfide (1997)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 107 (1997), S. 8866-8873 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The (2Πg3/2,1/2)nf Rydberg states of CS2 are investigated by means of (3+1) resonance enhanced multiphoton ionization (REMPI) time-of-flight (TOF) spectroscopy. The excitation spectrum of jet-cooled carbon disulfide has been obtained in the 74 000–81 000 cm−1 energy region. From the CS2+ mass selected REMPI spectra, the nf Rydberg series have been clearly identified and they have been found converging to the two spin–orbit components of the CS2+ (X 2Πg) ground state corresponding to the n=4–11 members. Comparison of the CS2+, CS+, S+ mass selected REMPI spectra gave a better insight of the competition between dissociation and ionization processes. The use of linearly and circularly polarized laser light, selection rules and quantum defect considerations have led to a preliminary analysis of the measured nf complexes. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.475178
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  • 6
    Electronic Resource
    Electronic Resource
    Specific Incorporation of Precursors into DNA by Feeding Labeled Bacteria to Paramecium aurelia (1964)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 11 (1964), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SYNOPSIS. Studies were carried out on the introduction of labeled precursors into the DNA of Paramecium aurelia (syngen 4, stock 51) by way of the bacteria that are used for food. A thymine-requiring strain of Escherichia coli (15 T−) was labeled by growth in either H3-methyl thymidine or 2-C14 bromouracil, washed free of the exogenous label, and fed to the paramecia. The tritium label from the bacteria was incorporated almost exclusively into the DNA of the paramecia, whereas it was much less specifically incorporated when introduced directly from the medium. The Cu label from bromouracil was also incorporated mainly into the DNA of the paramecia although a small amount appeared in RNA. The formation of labeled food vacuoles was followed. Food vacuoles were formed at a nearly constant rate, with the total number of vacuoles increasing throughout the cycle. The lifetime of the vacuoles was about 2.5 hours. Incorporation of the label into the DXA of the paramecia begins within a few minutes of the formation of the first labeled vacuole. DNA synthesis begins about 1.5 hr after the previous fission (total cell cycle about 5.8 hr) and progresses at a nearly constant rate throughout the remainder of the cycle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1964.tb01794.x
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  • 7
    Electronic Resource
    Electronic Resource
    SOLVENTS HAVING HIGH DIELECTRIC CONSTANTS. XIV. SOLUBILITIES AND REACTIONS OF SEVERAL TYPICAL INORGANIC AND ORGANIC COMPOUNDS IN N-METHYLACETAMIDE1 (1963)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 67 (1963), S. 281-283 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100796a015
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  • 8
    Electronic Resource
    Electronic Resource
    Electrostatic forces between metallic tip and semiconductor surfaces (1995)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 77 (1995), S. 3308-3314 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Atomic force microscopy used in the resonant mode is a powerful tool for measuring local surface properties: for example, the quantitative analysis of the electrical forces induced by the application of an electric field between a conductive microscope tip and a surface allows the determination of the tip/surface capacitance and the local surface work function. However, these quantitative analyses require knowledge of tip geometry. In this article, we show that the simple procedure of evaluating the tip curvature radius by fitting the variations of the electrostatic force with the tip-surface distance is not always adapted to the case where one of the tip-surface system elements is a semiconductor. However, particular experimental conditions are determined to overcome these difficulties. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.358616
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    In situ measurement of large piezoelectric displacements in resonant atomic force microscopy (1995)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 66 (1995), S. 2848-2852 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: In resonant atomic force microscopy (AFMR) the calibration of the tip–sample relative displacement remains a major problem. Commonly used PZT piezoceramics exhibit a nonlinear behavior response for large applied voltages. For low voltages applied to the piezoceramics (i.e., small corrugations), the calibration can be performed by measuring the height of known structures. For large displacements, the interferometric heterodyne detection used in the AFMR provides a relative tip–sample displacement up to 10 μm, without removing the piezo-tube from the microscope. From these measurements, it was established that the piezosensitivity is not a constant parameter. Its averaged value during an excursion depends linearly on the applied voltage. With this system, routine controls are very easy and an example is given of the displacement corrections related to the nonlinearity of the piezo-tube for the electrostatic interaction between the tip and a gold surface. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1145566
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  • 10
    Electronic Resource
    Electronic Resource
    Van der Waals and capacitive forces in atomic force microscopies (1999)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 86 (1999), S. 5245-5248 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In this article we show that in the atomic force microscopy experiments performed on a metallic surface, there is always a long range electrostatic force in addition to the van der Waals forces. This capacitive force is due to the contact potential between the tip and the surface and exists even without external applied potential. We have calculated this capacitive force for a real geometry of the tip–sample system and compared it to the van der Waals force calculated for the same geometry. We conclude that the electrostatic force is always dominant for a tip–surface distance larger than half of the tip radius of curvature. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.371506
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