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  • 1
    Electronic Resource
    Electronic Resource
    Photon beam position monitor : INTERNATIONAL CONFERENCE ON SYNCHROTRON RADIATION INSTRUMENTATION (1989)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 60 (1989), S. 1951-1952 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A highly sensitive beam position monitor has been designed for use with synchrotron radiation sources. This beam position monitor consists of two gas-flow ionization chambers having three parallel plate conductors. The incident beam is divided by a central plate. Therefore, a displacement of the beam position is detected with the two outside ionization chambers. The position monitor was tested at the BL6Cl beamline of the Photon Factory (PF). The results show a good performance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1140897
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Ensemble noise and current relaxation analysis of K+ current in single isolated salivary acinar cells from rat (1986)
    Springer
    Pflügers Archiv 406 (1986), S. 69-72 
    Details
    ISSN: 1432-2013
    Keywords: K+ channels ; Acinar cells ; Ensemble noise analysis ; Current relaxation ; Patch-clamp whole cell recording
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The K+ channel in rat parotid gland acinar cells were investigated by ensemble current noise analysis in single isolated cells employing the giga-seal whole cell current recording mode. Sets of 20–40 identical de- and hyperpolarization voltage steps were applied and the resultant current records were processed by computer to obtain the mean and the variance of the current. The time-course of the mean current could be fitted by the sum of two exponentials, suggesting a 3-state model. The simplest plausible hypothesis is a model with one open and two closed states. Assuming this model, the relationship between the variance (σ2) and the mean current (I) could be fitted by the function σ2/I=i−I/N. The estimated single channeli/V-relations were similar to those taken from single channel current recordings, and the size of the population of channels per cell (N) was 76±26 (n=12). The validity of the model was tested by a successful simulation of the time-course of the variance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00582956
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Cystic parathyroid adenoma with coexistent sarcoid granulomas (1987)
    Springer
    European archives of oto-rhino-laryngology and head & neck 243 (1987), S. 392-394 
    Details
    ISSN: 1434-4726
    Keywords: Primary hyperparathyroidism ; Parathyroid adenoma ; Sarcoidosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A 55-year-old woman with sarcoidosis developed hyperparathyroidism that was associated with fluctuating serum calcium levels. Ultrasonography and a computed tomography (CT) scan of the neck demonstrated a cystic lesion in the lower posterior area of the left thyroid lobe. Histological examination after subsequent surgery revealed sarcoid granulomas within a parathyroid adenoma. The pathogenesis of this rare association is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00464649
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  • 4
    Electronic Resource
    Electronic Resource
    Interactions of water-soluble polymers with small molecules II: Poly(2-diethylaminoethyl methacrylate)-methyl orange and its homolog systems at different temperatures (1986)
    Springer
    Colloid & polymer science 264 (1986), S. 756-763 
    Details
    ISSN: 1435-1536
    Keywords: Equilibrium dialysis ; hydrophobic interaction ; electrostatic interaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract In order to investigate the interactions of poly(2-diethylaminoethyl methacrylate) (PDEAEMA) with methyl orange and its homologs in solution, temperature dependence of the complex formation has been examined in detail by the measurements of transmittance and specific conductance for the systems. Furthermore, the binding course of dyes to PDEAEMA has been studied on the basis of thermodynamic parameters obtained from equilibrium dialysis experiments at different temperatures. It was observed that the flocculation process shifted to lower dye concentrations in accordance with increasing hydrophobicity of the dyes in the order, methyl orange 〈 ethyl orange 〈 butyl orange, and the process of complex formation was characterized by three separate regions according to the slope of specific conductivity-mixing ratio curve for mixtures of PDEAEMA and dye. The temperature dependences of ΔF,ΔH and ΔS suggest that, for dyes-PDEAEMA complex formation, the hydrophobic interaction is predominant at a low temperature but the electrostatic interaction becomes important as the temperature increases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01500750
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  • 5
    Electronic Resource
    Electronic Resource
    Interactions of water-soluble polymers with small molecules I: Poly(2-diethylaminoethyl methacrylate)-orange II and ethyl orange systems (1986)
    Springer
    Colloid & polymer science 264 (1986), S. 748-755 
    Details
    ISSN: 1435-1536
    Keywords: Poly(2-diethylaminoethyl methacrylate) ; flocculation ; deflocculation ; hydrogen bonding ; hydrophobic bonding
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The interactions between poly(2-diethylaminoethyl methacrylate) (PDEAEMA) and orange II (OII) or ethyl orange (EO) have been examined in detail by measuring the transmittance and the specific conductance of the solutions. The mechanisms of flocculation and deflocculation have been investigated by changing the intrinsic viscosity, the degree of neutralization and alkyl groups of PDEAEMA or by adding NaCl, urea or alcohols. The complexation of PDEAEMA with dyes is completed at the same mole ratio but is not dependent on the molecular weight of PDEAEMA. OII molecules bind with PDEAEMA by electrostatic interactions, followed by flocculation through hydrogen bondings between hydroxyl groups on OII molecules bound. EO molecules first interact with PDEAEMA electrostatically in the same ways as OII, but flocculation occurs by hydrophobic interactions between ethyl groups on EO molecules bound. By further addition of dyes to the complex, OII or EO molecules already bound can interact with free OII or EO molecules newly added through hydrogen/hydrophobic interaction between OII or EO molecules. Deflocculation occurs by the electrostatic repulsion between anions of dyes bound, such as (PDEAEMA-OII)-hydrogen bonding-(OII-anions) or (PDEAEMA-EO)-hydrophobic bonding-(EO-anions) newly formed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01500749
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    Paper (German National Licenses)
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