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  • 1
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: PROMT is a system for multiposition Thomson scattering in use at the Rijnhuizen Tokamak Project tokamak. Light from a ruby laser is scattered by the free electrons in the plasma and is collected along a vertical chord of 180 mm. Electron temperature and density profiles can be measured resolving up to 36 spatial elements. Scattered light is spectrally analyzed by a Littrow polychromator and subsequently detected with an intensified charge coupled device camera. At densities of 2×1019 m−3 electron temperatures in the range of 50 eV–3 keV can be measured with an accuracy of ∼5%.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    European journal of nutrition 29 (1990), S. 295-298 
    ISSN: 1436-6215
    Keywords: phosphopeptides ; calcium utilization ; minipig ; rat ; vitamin-D-deficiency ; Phosphopeptide ; Kalzium-Utilisation ; Minischwein ; Ratte ; Vitamin-D-Mangel
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Medicine
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    European journal of nutrition 30 (1991), S. 157-157 
    ISSN: 1436-6215
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Medicine
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    European journal of nutrition 30 (1991), S. 79-80 
    ISSN: 1436-6215
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Medicine
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    European journal of nutrition 30 (1991), S. 109-117 
    ISSN: 1436-6215
    Keywords: Guar gum ; serumlipids ; mechanism ; dietarycarbohydrate ; sucrose ; Guar Gum ; Serumlipide ; Mechanismus ; Diätkohlenhydrat ; Saccharose
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Medicine
    Description / Table of Contents: Zusammenfassung In der vorliegenden Untersuchung wurde bei Miniaturschweinen der Effekt von Guar Gum auf die Serumlipide bei gleichzeitiger Gabe von entweder 50,3% Stärke oder 50,3% Saccharose untersucht. Dazu durchliefen 5 adulte hypercholesterolämische Miniaturschweine (Gesamtserumcholesterol 9,0 mmol/l) jeweils nach einer Cross-over-Anordnung 3 Versuchsreihen von Fütterungsexperimenten mit jeweils 8 Wochen Dauer. (Experiment I = Maisstärke plus 15 g Guar; Experiment II = Maisstärke plus 30 g Guar; Experiment III = Saccharose plus 30 g Guar pro Tag.) In Gegenwart von Maisstärke in der Diät hatten weder 15 g noch 30 g Guar Gum einen Einfluß auf die Serum-Cholesterin- oder -Triglyceridspiegel. Die Cholesterinkonzentration in den Lipoproteinfraktionen war während der Experimente I und II ebenfalls nicht signifikant beeinflußt. War hingegen Saccharose in der Diät enthalten, so senkte Guar den Serum-Cholesterinspiegel um ca. 20% (p 〈 0,01) (Experiment III). Bei dieser Diät konnte die Zulage von 30 g Guar pro Tag ebenfalls die Cholesterinkonzentration in den VLDL- und HDL-Fraktionen signifikant (p 〈 0,05) herabsetzen. In Experiment III konnte auch eine tendenzielle Reduktion des Cholesterins in der LDL-Fraktion gemessen werden. Die Untersuchung zeigt, daß Guar Gum einen hypocholesterolämischen Effekt in Gegenwart von Saccharose in der Diät entfaltet, nicht aber bei Stärke als Kohlenhydrat in der Diät.
    Notes: Summary We examined the effect of guar gum on serum lipids if fed together with either 50.3% starch or 50.3% sucrose in a balanced diet to pigs. For this purpose, five adult hypercholesterolemic minipigs (total serum cholesterol 9.0 mmol/l) underwent three consecutive 8-week crossover (control or guar supplementation) feeding experiments (experiment I = cornstarch plus 15 g guar, experiment II = cornstarch plus 30 g guar, experiment III = sucrose plus 30 g guar per day). With the cornstarch-based diet neither 15 g nor 30 g guar gum had an influence on serum total cholesterol or triglyceride levels. Also, the cholesterol concentrations in the lipoprotein fractions did not change significantly during experiments I and II, yet total serum cholesterol concentration was about 20% lower (p 〈 0.01) when guar gum was added to the sucrose diet in experiment III. In the presence of sucrose the supplementation of 30 g guar led to a significant decrease (p 〈 0.05) of the cholesterol concentrations in the very low-density lipoproteins (VLDL) and high-density lipoproteins (HDL). There was also a tendency for decreased cholesterol levels in the low-density lipoproteins (LDL) after adding 30 g guar to the sucrose diet. Thus, the study demonstrates that guar gum exerts a hypocholesterolemic effect in the presence of sucrose in the diet, but not in the case of starch consumption.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 61 (1983), S. 1163-1170 
    ISSN: 1432-1440
    Keywords: Triglyceride ; Cholesterol ; Very low density Lipoproteins ; Synthesis ; Secretion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The liver is the junction of several interorgan metabolic cycles which are essential for the homeostasis of mammalian metabolism. Two of these are described in greater detail and their role in control of lipid metabolism will be presented. The fatty acid-triglyceride cycle is of particular importance for our understanding of the mechanisms governing serum lipid levels. This is due to the fact that the lipoprotein secreted by the liver in the course of this metabolic cycle — very low density lipoprotein — has a relatively long half-life in the plasma compartment. Data have been collected from the literature to show that different nutritional and pharmacological stimuli affecting serum lipid levels do so by interfering with the rate of very low density lipoprotein input into the plasma compartment. The enterohepatic circulation of steroids is another cycle which contributes to control of lipid metabolism. Data are presented which show that bile acids, the major steroids circulating in this cycle, exert direct feedback control of hepatic cholesterol synthesis. This characteristic of bile acids may explain why certain bile acids, when given orally, reduce serum cholesterol levels. Several clinical and experimental observations suggest a close relation between bile acid and triglyceride metabolism. It is characterized by an inverse relation between bile acid pool size and serum triglyceride levels. Moreover, a reduction of the bile acid pool size is accompanied by an enhanced hepatic fatty acid and triglyceride synthesis and secretion into blood. The molecular basis and physiological significance of these observations have still to be explored. Special emphasis is put on the advantage of monolayer cultures of liver cells which had to be used in order to reach much of the experimental evidence outlined herein. This cellular model endowed with the physiology and phenotype of the normal adult liver cell is particularly suited to the study of long-term regulation of metabolism.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    European journal of nutrition 29 (1990), S. 77-78 
    ISSN: 1436-6215
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Medicine
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    European journal of nutrition 30 (1991), S. 131-137 
    ISSN: 1436-6215
    Keywords: D-Laktat ; Joghurt ; Mahlzeiteneinfluß ; D-lactate ; yogurt ; ingestion effects
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Medicine
    Description / Table of Contents: Summary The risk of D-lactic acidosis after consumption of yogurt was investigated in seven healthy volunteers. After ingestion of yogurt containing 1.06 mmol/kg body weight, D-lactic acid postprandial plasma D-lactate concentrations increased from 0.070±0.020 to a maximum of 0.200±0.010 mmol/l within 60 min. That was half the maximum concentration after the equivalent amount of D-lactate in the form of an aqueous solution of DL-lactate. The shape of the postprandial plasma D-lactate peak was flatter, but much broader after yogurt than after the aqueous solution, the peak areas being equal. When 0.64 mmol/kg body weight D-lactate were consumed as yogurt, plasma concentrations amounted to 0.086±0.030 mmol/l. Signs of a mild, transient, compensated metabolic acidosis, which was apparent in case of the aqueous lactic acid solution did not occur in case of yogurt. It is concluded that the consumption of foods containing D-lactic acid gives no reason for concern in healthy adults.
    Notes: Zusammenfassung Das Risiko einer D-Laktat-Azidose durch Joghurtverzehr wurde bei 7 gesunden Probanden untersucht. Nach dem Verzehr von Joghurt, der eine Aufnahme von 1,06 mmol/kg Körpergewicht D-Milchsäure bewirkte, stiegen die postprandialen Plasma-D-Laktat-Spiegel innerhalb von 60 min von 0,070±0,020 auf einen Höchstwert von 0,200±0,010 mmol/l an. Ein doppelt so hoher Anstieg der postprandialen Plasma-D-Laktat-Konzentrationen wurde nach Verabreichung der äquivalenten Menge D-Milchsäure in Form einer wäßrigen Lösung von DL-Laktat beobachtet. Die postprandialen Plasma-D-Laktat-Maxima fielen nach Joghurt flacher und breiter aus, während die Kurvenflächen unabhängig von der Zufuhrform waren. Nach dem Verzehr von 0,64 mmol/kg Körpergewicht D-Milchsäure in Joghurt stiegen die D-Laktat-Konzentrationen im Plasma bis auf 0,086±0,030 mmol/l an. Anzeichen einer geringfügigen, vorübergehenden, kompensierten metabolischen Azidose nach Zufuhr der wäßrigen D-Milchsäure-Lösung wurden nach Verzehr von Joghurt nicht beobachtet. Aus diesen Ergebnissen wird der Schluß gezogen, daß der Verzehr D-Milchsäure-haltiger Lebensmittel für gesunde Erwachsene unbedenklich ist.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Journal of inherited metabolic disease 4 (1981), S. 133-133 
    ISSN: 1573-2665
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A patient with muscular carnitine deficiency showed little clinical improvement with carnitine supplementation but responded well to the addition of medium-chain triglycerides to the diet.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1572-9672
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The Galileo ultraviolet spectrometer experiment uses data obtained by the Ultraviolet Spectrometer (UVS) mounted on the pointed orbiter scan platform and from the Extreme Ultraviolet Spectrometer (EUVS) mounted on the spinning part of the orbiter with the field of view perpendicular to the spin axis. The UVS is a Ebert-Fastie design that covers the range 113–432 nm with a wavelength resolution of 0.7 nm below 190 and 1.3 nm at longer wavelengths. The UVS spatial resolution is 0.4 deg × 0.1 deg for illuminated disc observations and 1 deg × 0.1 deg for limb geometries. The EUVS is a Voyager design objective grating spectrometer, modified to cover the wavelength range from 54 to 128 nm with wavelength resolution 3.5 nm for extended sources and 1.5 nm for point sources and spatial resolution of 0.87 deg × 0.17 deg. The EUVS instrument will follow up on the many Voyager UVS discoveries, particularly the sulfur and oxygen ion emissions in the Io torus and molecular and atomic hydrogen auroral and airglow emissions from Jupiter. The UVS will obtain spectra of emission, absorption, and scattering features in the unexplored, by spacecraft, 170–432 nm wavelength region. The UVS and EUVS instruments will provide a powerful instrument complement to investigate volatile escape and surface composition of the Galilean satellites, the Io plasma torus, micro- and macro-properties of the Jupiter clouds, and the composition structure and evolution of the Jupiter upper atmosphere.
    Type of Medium: Electronic Resource
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