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  • 1
    Electronic Resource
    Electronic Resource
    Effect of polyenyl phosphatidyl choline on clofibrate-induced increase in LDL cholesterol (1979)
    Springer
    European journal of clinical pharmacology 15 (1979), S. 15-19 
    Details
    ISSN: 1432-1041
    Keywords: clofibrate ; polyenyl phosphatidyl choline ; hyperlipoproteinemia ; LDL cholesterol ; coronary heart disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary In a double-blind, randomised, cross-over trial clofibrate and a combination of polyenyl phosphatidyl choline (PPC) plus clofibrate were tested in 67 patients with hyperlipoproteinemia. Each treatment lasted for 4 weeks and was separated by a 4 week placebo period. The daily doses were clofibrate 1.2 g and PPC 1.8 g + clofibrate 1.2 g, respectively. The results revealed that polypenyl phosphatidyl choline prevented the elevation of LDL-cholesterol induced by clofibrate treatment, and that the lipid-lowering potency of the combination did not differ significantly from that of clofibrate. Since elevation of LDL-cholesterol is considered to increase the risk of coronary heart disease, the combination appears to offer a therapeutic advantage. Despite the significance of this clinical observation, a final decision may only be obtained from a prospective, long term investigation in patients with coronary heart disease and hyperlipoproteinemia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00563553
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  • 2
    Electronic Resource
    Electronic Resource
    Tetraaza[14]annulen-Derivate und ihre Vorstufen. 1. Mitt. Niedermolekulare Modellverbindungen (1978)
    Springer
    Colloid & polymer science 256 (1978), S. 90-90 
    Details
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01746734
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  • 3
    Electronic Resource
    Electronic Resource
    Tetraaza[14]annulen-Derivate und ihre Vorstufen. 2. Mitt. Bicyclische Verbindungen und polymere Substanzen (1978)
    Springer
    Colloid & polymer science 256 (1978), S. 308-308 
    Details
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01550735
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  • 4
    Electronic Resource
    Electronic Resource
    Precision measurement of the nuclear magnetic dipole moment of175Lu by optical pumping of free Lu+ ions (1975)
    Springer
    The European physical journal 275 (1975), S. 305-311 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Nuclear spin polarization in the 4f 146s 2 1 S 0 ground state of175Lu+(I=7/2) ions is achieved by optical pumping with the resonance line (1 S 0-1 P 1,λ=261.5 nm). Nuclear magnetic resonance of the free ions in He buffer gas yields for the magnetic dipole momentμ(175Lu)=2.2240(11)μ n (with diamagnetic correction). This value can be used for a more accurate determination of the magnetic dipole moments of other Lu isotopes from knownA factor ratios. A comparison with nuclear induction measurements in solids results in the chemical shiftsδ(LuB12)=−23(5)·10−4 andδ(LuSb)= −31(5)·10−4.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01434016
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  • 5
    Electronic Resource
    Electronic Resource
    Nuclear spin ordering of solid3He in applied magnetic fields (1977)
    Springer
    Journal of low temperature physics 27 (1977), S. 319-349 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The effects of a magnetic field on nuclear spin ordering in solid3He have been observed through the influence of the field on the solid entropy. By making use of the Clausius-Clapeyron equation, the3He melting temperature as a function of pressure was determined in several magnetic fields from 0 to 1.2 T from measurements of the latent heat of solidification in a Pomeranchuk cell. The solid entropy as a function of temperature was then calculated from the melting curve slope in each field by again utilizing the Clausius-Clapeyron equation. The solid ordering manifested itself as a substantial reduction in entropy occurring over a narrow temperature interval. A portion of the magnetic phase diagram of solid3He was established by plotting the ordering temperature versus field. In low fields the reduction in entropy occurs over a very narrow temperature interval, and the ordering temperature is depressed by the field. Above about 0.41 T, however, the ordering region is broadened and moves to significantly higher temperatures with increasing fields. The behavior in low fields is tentatively interpreted as a magnetic phase transition from the paramagnetic to an ordered phase, while the effect in higher fields is believed to represent paramagnetic ordering of the nuclear spins by the applied field.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00655277
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  • 6
    Electronic Resource
    Electronic Resource
    NMR in flowing superfluid 3He (1978)
    Springer
    Journal of low temperature physics 33 (1978), S. 43-68 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: The effects of flow on the NMR absorption in the A and B phases of 3He have been studied. While no flow-induced changes in the absorption were seen in the B phase, a variety of phenomena were observed in the A phase. The phenomena include the development of time-dependent satellite peaks, height reductions of the signal, and a splitting of the signal, with a fraction of the signal shifting to lower frequencies. These effects are described and discussed in light of the existing theoretical models. In addition, the NMR shift in the static B-phase liquid confined between 135-Μm-spaced parallel plates has been measured as a function of temperature and the angle between the magnetic field and the plates. These results are compared with previous measurements and are found to be in good agreement. Finally, two effects observed in the static liquid, the disappearance of the B-phase signal under certain conditions and the splitting of the A-phase signal, are described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00117065
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  • 7
    Electronic Resource
    Electronic Resource
    Plant uptake of bicarbonate as measured with the11C isotope (1979)
    Springer
    Plant and soil 51 (1979), S. 431-435 
    Details
    ISSN: 1573-5036
    Keywords: Bicarbonate ; Bush beans ; 11C ; Cation-anion ; CO2 fixation ; Galenia ; Tracer ; Uptake
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary 11C which is cyclotron produced by14N(P, α)11C(half-life 20.1M) was use as a tracer of bicarbonate to determine its movements from a nutrient solution through roots to stems and leaves of bush bean plants (Phaseolus vulgaris L. var. Improved Tendergreen). The short time involved and the high solution pH minimized the need for use of the Hederson Hasselbach equation for activity correction. Quantities of11C did move into roots, stems and leaves with a sharp decreasing gradient (root/stem=14.5, stems/leaves=11.7) More11C moved into plants with KHCO3 than with NaHCO3. The (NH4)2SO4 enhanced11C uptake and KNO3 than with competition indicated possibility of some uptake of HCO 3 − . In an experiment withGalenia pubescens (Eckl. and Zeyh.) Druce, the11C was more readily moved to stems and leaves than in bush bean indicating substantial uptake of HCO 3 − .
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02197790
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  • 8
    Electronic Resource
    Electronic Resource
    Eine einfache Technik zur quantitativen Auswertung von Dünnschicht-Chromatogrammen (1976)
    Springer
    Chromatographia 9 (1976), S. 211-214 
    Details
    ISSN: 1612-1112
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Ein neues Verfahren wird beschrieben, das die quantitative Auswertung von Dünnschicht-Chromatogrammen erlaubt. Nach der auf DC-Fertigfolien durchgeführten Trennung werden die Zonen ausgeschnitten und die Substanzen mit einem neuen, unkomplizierten Gerät quantitativ aus dem Sorbens eluiert. In den Eluaten erfolgen die Bestimmungen mit den üblichen analytischen Methoden — vorzugsweise der Spektralphotometrie. An Hand von Beispielen wird die Genauigkeit der Folien-Elutions-Methode demonstriert.
    Notes: Summary A new method is described for the quantitative evaluation of thin-layer chromatograms. After the substances have been separated by TLC on precoated sheets the spots are cut out and the substances can be eluted from the adsorbent by a new simple apparatus with a suitable solvent. In the eluate the quantitative determination is done by means of the usual analytical methods, especially spectrophotometric measurements. Some examples illustrate the precision with which the sheet elution method can be carried out.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02276327
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  • 9
    Electronic Resource
    Electronic Resource
    Direkte Kupplung von Steroiden an Eiweiß durch reduktive Aminierung zur Gewinnung spezifischer Antikörper (1978)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 290 (1978), S. 164-164 
    Details
    ISSN: 1618-2650
    Keywords: Gewinnung von Antikörpern ; Immunoassay ; Kupplg. von Steroiden an Eiweiß
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00482320
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  • 10
    Electronic Resource
    Electronic Resource
    Tumour growth and differentiation in relation to the content of carcinoembryonic antigen in gastrointestinal neoplasia (1978)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 290 (1978), S. 137-138 
    Details
    ISSN: 1618-2650
    Keywords: Best. von Carcinoembryonalem Antigen in Carcinomen ; Radioimmunoassay
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00482298
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