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  • Polymer and Materials Science  (6)
  • Polymeremulsion  (4)
  • Cation effect  (3)
  • Impedance plethysmography  (3)
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Material
Years
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Regulation of excitation energy distribution in Photosystem-II fragments by magnesium ions
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Bioenergetics 592 (1980), S. 296-302 
    Details
    ISSN: 0005-2728
    Keywords: (Regulation, subchloroplast) ; Cation effect ; Energy transfer ; Fluorescence quenching ; Light-harvesting complex ; Photosystem II
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0005-2728(80)90190-5
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Measurement of degree of chlorophyll fluorescence polarization in relation to the regulation of excitation energy transfer between Photosystems I and II in pea chloroplasts
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Bioenergetics 637 (1981), S. 224-230 
    Details
    ISSN: 0005-2728
    Keywords: (Pea chloroplast) ; Cation effect ; Chlorophyll fluorescence ; Excitation energy transfer ; Fluorescence polarization ; Photosynthesis
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0005-2728(81)90161-4
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Regulation of electron transport in Photosystem-II fragments by magnesium ions
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Bioenergetics 592 (1980), S. 285-295 
    Details
    ISSN: 0005-2728
    Keywords: (Regulation, chloroplast) ; Cation effect ; Cytochrome b-559 ; Electron transport ; Fluorescence quenching ; Light-harvesting complex ; Photosystem II
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0005-2728(80)90189-9
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Preferential adsorption of bovine serum albumin dimer onto polymer microspheres having a heterogeneous surface consisting of hydrophobic and hydrophilic parts (1990)
    Springer
    Colloid & polymer science 268 (1990), S. 598-603 
    Details
    ISSN: 1435-1536
    Keywords: Polymeremulsion ; polymermicrosphhere ; bovineserumalbumin ; proteinadsurption ; surfacehydrophilicity ; surfaceheterogeneity
    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 adsorption behaviors of bovine serum albumin (BSA) containing both dimeric and monomeric species onto polymer microspheres were examined using various homopolymers and poly(2-hydroxyethyl methacrylate)/polystyrene composite microspheres which were produced by the emulsifier-free (seeded) emulsion polymerization technique. The preferential adsorption of the BSA dimer was clearly observed in an optimum region of the surface hydrophilicities of the polymer microspheres. The preferential adsorption of the BSA dimer onto the composite polymer microspheres having heterogeneous surfaces consisting of hydrophilic and hydrophobic parts was more marked than those onto the homopolymer and copolymer microspheres having homogeneous surfaces.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01410399
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  • 5
    Electronic Resource
    Electronic Resource
    Estimation of distribution of vinyl groups in micron-sized monodisperse polymer microspheres by bromine titration method (1991)
    Springer
    Colloid & polymer science 269 (1991), S. 1126-1132 
    Details
    ISSN: 1435-1536
    Keywords: Polymeremulsion ; microsphere ; vinylgroup ; brominetitration ; dispersionpolymerization ; seededpolymerization
    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 distribution of vinyl groups in polystyrene/poly(styrene-divinylbenzene) (PS/P(S-DVB)) composite microspheres produced by seeded copolymerization of S and DVB in the presence of 2.1-μm monodisperse PS seed particles was estimated from the amount detected with bromine titration method as a function of the reaction time under various conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00654120
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  • 6
    Electronic Resource
    Electronic Resource
    Preparation of micron-size monodisperse polymer microspheres having cationic groups (1992)
    Springer
    Colloid & polymer science 270 (1992), S. 733-737 
    Details
    ISSN: 1435-1536
    Keywords: Polymeremulsion ; microsphere ; chloromethylgroup ; polyamine ; cationicgroup ; dispersionpolymerization ; seededpolymerization
    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 Micron-size monodisperse crosslinked polymer microspheres having chloromethyl groups were prepared by seeded copolymerization of styrene, divinylbenzene, and chloromethylstyrene in the presence of 2.1-μ monodisperse polystyrene seed particles produced by dispersion polymerization. The modification reaction of chloromethyl groups on the surfaces with polyamines such as triethylenetetramine and ethylenediamine was carried out. From the measurements of ξ potential and the amount of chloride ion released, the introduction of a large number of cationic groups at the surfaces was confirmed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00776143
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Preparation of microspheres by radiation-induced polymerization. I. Mechanism for the formation of monodisperse poly(diethylene glycol dimethacrylate) microspheres (1991)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 29 (1991), S. 1197-1202 
    Details
    ISSN: 0887-624X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Monodisperse microspheres of poly(diethylene glycol dimethacrylate) with diameters in the size range 0.4-4.8 μm were prepared by the radiation-induced polymerization. Effects of solvent viscosity and monomer solubility were investigated for various kinds of solvents. The number of the nuclei, produced in the early stage of the polymerization, was found to be constant during the remainder of the polymerization. The nuclei grow to be monodisperse polymer particles without aggregation. This is attributed to the low mobility of the growing polymer particles.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1991.080290814
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  • 8
    Electronic Resource
    Electronic Resource
    Measurement of digital blood flow using the laser Doppler, impedance and strain-gauge methods (1990)
    Springer
    Medical & biological engineering & computing 28 (1990), S. 113-118 
    Details
    ISSN: 1741-0444
    Keywords: Digital blood flow ; Impedance plethysmography ; Laser Doppler ; Occlusion plethysmography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract Digital volume changes and blood flow have been measured with impedance and strain-gauge plethysmography as well as with laser Doppler flowmetry. A good agreement was found between the impedance and strain-gauge flow measurements with a correlation coefficient of 0·905. The laser Doppler method recorded minor changes in finger skin blood flow following changes in posture from 30 cm below heart level to 60 cm above heart level. This result can be explained as a consequence of the limited penetration depth of laser light into the skin or as a sign of autoregulation of skin blood flow. In these experiments the total blood flow to the finger underwent major changes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02441765
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  • 9
    Electronic Resource
    Electronic Resource
    Impedance plethysmography in human limbs (1991)
    Springer
    Medical & biological engineering & computing 29 (1991), S. 419-424 
    Details
    ISSN: 1741-0444
    Keywords: Blood flow in human limbs ; Disk electrode ; Electrode system ; Impedance plethysmography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract Electrode design and electrode positioning are important factors in blood flow measurements using impedance plethysmography. Optimal electrode type and accurate positioning will decrease measurement errors and improve the signal-to-noise-ratio. Disk electrodes were found to be superior to tape electrodes because of their better skin-electrode stability and because they prevent limb compression. The distance between current electrodes and potential electrodes should be greater than 2·3 R (disk electrodes) and 1·5 R (tape electrodes) to avoid the influence of the so-called diffusion resistance (R is the radius of the limb at the electrode site).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02441664
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  • 10
    Electronic Resource
    Electronic Resource
    Impedance plethysmography for blood flow measurements in human limbs (1992)
    Springer
    Medical & biological engineering & computing 30 (1992), S. 518-524 
    Details
    ISSN: 1741-0444
    Keywords: Blood flow in human limb ; Cross-sectional area ; Impedance plethysmography ; Strain gauge
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract The cross-sectional area of a limb varies along the extremity. This is of great importance when impedance plethysmography is used for limb blood flow studies. The actual measurement site, as well as the interelectrode distance, must be carefully selected to avoid underestimation of the blood flow value. The distance between the potential electrodes should be less than 10 cm for an adult subject.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02457831
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