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  • 2000-2004  (9)
  • 1995-1999  (10)
  • 1950-1954  (2)
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  • 1
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    Germ theory and its applications to medicine and surgery (2000)
    Hoboken, N.J : BiblioBytes
    Details
    Keywords: Germ cells. ; Medical microbiology.
    ISBN: 0-585-04976-9
    URL: http://www.netLibrary.com/urlapi.asp?action=summary&v=1&bookid=2008565
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    E-Book (German National Licenses)
  • 2
    Electronic Resource
    Electronic Resource
    Adsorption geometries of CO on Cu (211) (1999)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 110 (1999), S. 10522-10525 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The adsorption of CO on Cu (211), serving as model system for the adsorption of CO in stepped surfaces, has been investigated using electron energy loss spectroscopy (EELS). At a surface temperature of 110 K, CO adsorbs nondissociatively and is drawn exclusively to descending step sites in this system. On-top and bridge sites are sequentially populated with the CO axis being perpendicular to the surface. In addition, at low coverage, a molecular state is observed, for which the CO axis is strongly inclined. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.478983
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  • 3
    Electronic Resource
    Electronic Resource
    Three-dimensional position detection of optically trapped dielectric particles (2002)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 91 (2002), S. 5474-5488 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A theory is presented together with simulation results that describe three-dimensional position detection of a sphere located in a highly focused beam by back-focal plane interferometry. This technique exploits the interference of scattered and unscattered light, which is projected on a quadrant photodiode placed in the back-focal plane of a condenser lens. Due to the Gouy-phase shift inherent in focused beams, it is not only possible to determine the lateral but also the axial position of a spherical particle with nanometer accuracy. In this paper we describe the calculation of arbitrary focused electromagnetic fields, the Gouy phase shift, Mie scattering by focused beams and the resulting position signals using the angular momentum representation. The accuracy and the sensitivity of the detection system are investigated theoretically for various sphere parameters. Both accuracy and sensitivity depend on the incident light distribution as well as on the particle's properties and position. It is further shown that the maximum capture angle of the detection lens influences the detector's sensitivity in a nonlinear manner. Additionally, for optical trapping applications the influence of the laser power is taken into account and is considered through a noise analysis. For all investigated trapping conditions the reconstructed position deviates on average 〈1 nm laterally and 〈5 nm axially from the actual particle position. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1459748
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    A confocal fiber-coupled single-lens theta microscope (1998)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 69 (1998), S. 2956-2963 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A confocal theta microscope using a single water-immersion objective lens is described. The system is based on the Zeiss Axioplan universal microscope, such that the illumination light is coupled into, and the detected light out of, the microscope optics via optical fibers attached to the reflector slider of the microscope. Conventional wide-field, laser-scanning confocal, confocal theta, and 4Pi-confocal theta microscopy modes are available with the system. As the design can be easily adapted to other microscopes, objective lenses, and wavelengths, it allows confocal theta techniques to be implemented in many standard systems. The design constraints and specifications for the microscope are given, as well as a demonstration of its performance. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1149040
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  • 5
    Electronic Resource
    Electronic Resource
    Three-dimensional thermal noise imaging (2001)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 79 (2001), S. 3878-3880 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We present a scanning probe microscope based on optical tweezers for three-dimensional imaging of the topology of transparent material in the nanometer range. A spherical nanoparticle serves as a probe. An optical trap moves it through the sample (e.g., a polymer network), while the position of the particle center is recorded by three-dimensional interferometry. Accessible volumes are reconstructed from the histogram of thermal position fluctuations of the particle. The resolution in determining the position of surfaces in three dimensions is about 20 nm. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1423404
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    High-resolution axial and lateral position sensing using two-photon excitation of fluorophores by a continuous-wave Nd:YAG laser (1996)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 69 (1996), S. 446-448 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The change in position of fluorescent beads captured inside the focal volume of optical tweezers is monitored using fluorescence emission induced by two-photon absorption of a continuous-wave Nd:YAG laser (λ=1064 nm). The displacement of a bead due to interactions with its environment leads to a fluorescence intensity variation that is used to design a novel spatial sensor. We determine changes in the axial position of a CY3-labeled latex bead with a diameter of 1.03 μm to a precision better than 10 nm. At an intensity of 600 mW/ μm2 the two-photon bleaching rate is lower than 50% per 2000 s. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.118134
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    CHRONIC ULCERATIVE STOMATITIS WITH STRATIFIED EPITHELIUM-SPECIEIC ANTINUCLEAR ANTIBODIES (1996)
    Oxford, UK : Blackwell Publishing Ltd
    International journal of dermatology 35 (1996), S. 0 
    Details
    ISSN: 1365-4632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background. In 1990 a new disease-associated antinuclear antibody was first recognized as a specific immunologic marker for a chronic form of ulcerative stomatitis (cus). Methods. Another case is reported herein and the subject of chronic ulcerative stomatitis with stratified epithelium-specific antinuclear antibodies (SES-ANA) is reviewed. Intraoral biopsies from this patient were submitted for microscopic examination and direct immunofluorescence. Indirect immunofluorescence studies were also performed. Serial SES-ANA titers were obtained with the patient on maintenance treatment with hydroxychloroquine. A skin biopsy of a recent lichenoid eruption was obtained and skin explants grown in the serum of this patient were studied in tissue culture with reference to SES-ANA binding and complement fixation. Results. Biopsy and serum studies confirmed a diagnosis of cus with SES-ANA in the patient reported. Skin biopsy showed lichen planus. The patient was treated with hydroxychloroquine with a favorable response. Serial SES-ANA titers did not parallel the disease activity. Among the substantive observations made from skin explants cultured in the serum of this patient was widespread fixation of C3 to the nuclei of basal cells. Conclusions. The case described herein extends the findings in cus to include lichenoid skin lesions. Records show that at least four of 11 cases of cus had skin lesions, whereas all had oral lesions. Stratified epithelium-specific antinuclear antibodies serve as the key marker of cus. Skin explants grown in the serum of this cus patient bind SES-ANA in tissue culture. Sections of explants fix complement. Titers of SES-ANA have been reported to parallel disease activity in one case, but not in the present case. Thus, there appears to be case-to-case variation. The treatment of choice for cus is hydroxychloroquine.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-4362.1996.tb03000.x
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    PSEUDO-PYOSTOMATITIS VEGETANS (1995)
    Oxford, UK : Blackwell Publishing Ltd
    International journal of dermatology 34 (1995), S. 0 
    Details
    ISSN: 1365-4632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-4362.1995.tb01105.x
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    The development of immunofluorescence and the immunopathology of the skin (2003)
    Oxford, UK : Blackwell Science Ltd
    International journal of dermatology 42 (2003), S. 0 
    Details
    ISSN: 1365-4632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-4362.2003.01202.x
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    Autonomic and behavioral responding to concealed information: Differentiating orienting and defensive responses (2004)
    Oxford, UK : Blackwell Publishing
    Psychophysiology 41 (2004), S. 0 
    Details
    ISSN: 1469-8986
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: A mock crime experiment was conducted to examine whether enhanced responding to concealed information during a polygraph examination is due to orienting or defensive responding. Thirty-six undergraduate students enacted one of two mock crimes. Pictures related to both crimes were presented while heart rate, magnitude of the skin conductance response, and reaction times to a secondary probe were measured. Compared to control pictures, participants showed heart rate deceleration and enhanced electrodermal responding to pictures of the crime they had committed. Probe reaction times did not differ significantly between crime and control pictures. The present findings support the idea that the orienting reflex accounts for the enhanced responding to concealed information. Theoretical and practical implications of the orienting account are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1469-8986.00167.x
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