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  • Horseradish peroxidase  (1)
  • NaCl + Na2SO4  (1)
  • PLS  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Cat retinal ganglion cells projecting to the superior colliculus as shown by the horseradish peroxidase method (1976)
    Springer
    Experimental brain research 25 (1976), S. 541-549 
    Details
    ISSN: 1432-1106
    Keywords: Retina ; Superior colliculus ; Horseradish peroxidase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary 1. Cat retinal ganglion cells projecting to the superior colliculus (SC) were detected in flat whole-mounts of Nissl-stained retinas by means of unilateral intracollicular injections of horseradish peroxidase (HRP). 2. With the purpose of drawing a comparison between HRP-labeled ganglion cells and the remaining population of unlabeled ganglion cells, the latter were classified according to their perikaryal characteristics into three groups: large, medium and small ganglion cells. Measurements of perikaryal sizes of ganglion cells distributed from the central area to the periphery of the retina showed that large cells ranged from 20 to 44 μm, medium cells from 15 to 30 μm and small cells from 8 to 17 μm. 3. Peroxidase-labeled retinal ganglion cells (HRP-cells) occurred among representatives of each of the three groups into which retinal ganglion cells had been classified. Small HRP-cells clearly constituted the majority of the HRP-cell population. When the injection site was restricted to the superior colliculus, medium HRP-cells as large as 19 μm were only occasionally observed, the 15 to 18 μm range being predominant over the medium cell population. 4. Medium HRP-cells larger than 20 μm were a common finding only when the injection site involved the pretectal nuclei and were never observed when the injection site was restricted to superior colliculus. 5. Possibility of a correspondence between the large, medium and small HRP-cells of the present study with, respectively, the physiological types Y-, X- and W- of cat retinal ganglion cells is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00239786
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Thermodynamic Study of the NaCl + Na2SO4 + H2O System by Emf Measurements at Four Temperatures (1999)
    Springer
    Journal of solution chemistry 28 (1999), S. 791-807 
    Details
    ISSN: 1572-8927
    Keywords: Activity coefficients ; emf measurements ; ternary systems ; NaCl + Na2SO4
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Activity coefficients for sodium chloride in the NaCl + Na2SO4 + H2O ternary system were determined from emf measurements of the cell $${\text{Na}} - {\text{glass|NaCl}}\left( {m_{\text{A}} } \right),\;{\text{Na}}_{\text{2}} {\text{SO}}_{\text{4}} \left( {m_{\text{B}} } \right),\;{\text{AgCl}}\left( {\text{s}} \right){\text{|Ag}}$$ at 15, 25, 35, and 45°C and at total ionic strengths from 0.1 to 6 mol-kg−1. These activity coefficient were analyzed by using the Harned rule and the treatments of Scatchard–Rush–Johnson and Pitzer. The analysis of activity coefficients at “trace” concentration was also achieved and qualitatively interpreted by considering the ionic interactions that can take place in the mixed system. Finally, the excess Gibbs energy of the mixtures was calculated and qualitatively analyzed against the composition of the system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1021780414613
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    PLS and PCR Methods in the Assessment of Coastal Water Quality (2000)
    Springer
    Environmental monitoring and assessment 62 (2000), S. 193-204 
    Details
    ISSN: 1573-2959
    Keywords: coastal water quality ; nutrients ; PCR ; PLS ; trophicscale
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Partial least squares regression analysis (PLS) and principal component regression analysis (PCR) were examined asmethodological procedures for assessing the quality of coastalwaters in a tourist area. Four variables related to the trophicstate of waters, namely nitrate, nitrite, ammonia and phosphate were analyzed. The models resulting from PLS and PCR were verysimilar. Both defined three groups of water masses characterizedby different nutrient loadings. These groups were in accordancewith those obtained by numerical classification. The PLS methodwas selected as the optimal model, on the basis of its lowerprediction errors (lower Press and Rmsd values). For managementpurposes, this statistical model allows mesotrophic conditions,reflecting some nutrient enrichment over background conditions,to be characterized and the successful diagnosis of additionalsamples within this context.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006236804405
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    Paper (German National Licenses)
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