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  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 87 (2000), S. 3137-3142 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A series of samples was deposited by very high frequency glow discharge in a plasma of silane diluted in hydrogen in concentrations SiH4/(SiH4+H2) varying from 100% to 1.25%. For silane concentrations below 8.4%, a phase transition between amorphous and microcrystalline silicon occurs. Microcrystalline silicon has been characterized by transmission electron microscopy (TEM) and x-ray diffraction. The medium-resolution TEM observations show that below the transition, the microstructure of microcrystalline silicon varies in a complex way, showing a large variety of different growth structures. For the sample close to the phase transition, one observes elongated nanocrystals of silicon embedded in an amorphous matrix followed at intermediate dilution by dendritic growth, and, finally, at very high dilution level, one observes columnar growth. X-ray diffraction data evidence a (220) crystallographic texture; the comparison of the grain sizes as evaluated from TEM observations and those determined using Scherrer's equation illustrates the known limitations of the latter method for grain size determination in complex microstructures. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of sensory studies 17 (2002), S. 0 
    ISSN: 1745-459X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: We tested the hypothesis that exposure to an aroma through a food or beverage in the first part of a meal (preload) would reduce the consumption of a food with the same aroma in the second portion of the meal, because of olfactory-specific satiety. In a first experiment, 35 young, normal-weight adults participated in 2 lunch sessions during which they consumed a fixed preload of either ranch-flavored or plain potato chips and sparkling water, followed by ad libitum consumption of a pasta salad with ranch dressing and sparkling water. In the second experiment, 33 subjects consumed a fixed preload of either lemon-flavored or plain sparkling water and pasta salad with ranch dressing, followed by ad libitum consumption of lemon-flavored yogurt and plain sparkling water. No difference was observed in the amount of food consumed (corrected for session order effects) as a function of prior exposure to ranch flavor in the chips or lemon flavor in the water. We conclude that exposure to a preload aroma may not have a significant effect on subsequent intake of a food with the same aroma.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 73 (2002), S. 259-262 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Laser-based cavity ringdown techniques have demonstrated ultrahigh sensitivities for trace gas detection in the optical and infrared wavelength regions. We have investigated the applicability of the cavity ringdown technique in the millimeter wave region, which is rich in the rotational spectra of molecules. The millimeter-wave system uses a tunable Fabry–Perot cavity that is excited by a continuous-wave, phase-locked source at the W band; a fast PIN diode switch that turns off the excitation after the cavity is tuned to resonance; and a diode detector that records the resonance decay. Proof of concept has been established by measuring the ringdown times with absorbing materials in the cavity and comparing them with theoretical prediction. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 5
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    Berlin : Periodicals Archive Online (PAO)
    Orientalistische Literaturzeitung. 60:1/2 (1965:Jan./Feb.) 70 
    ISSN: 0030-5383
    Topics: Linguistics and Literary Studies , Ethnic Sciences , History
    Notes: Besprechungen
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Commentarii mathematici Helvetici 75 (2000), S. 171-188 
    ISSN: 1420-8946
    Keywords: Key words. Connectivity at infinity, Artin groups, duality groups.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract. Given an improper action (= cell stabilizers are infinite) of a group G on a CW-complex $ {\cal X} $ , we present criteria, based on connectivity at infinity properties of the cell stabilizers under the action of G that imply connectivity at infinity properties for G. A refinement of this idea yields information on the topology at infinity of Artin groups, and it gives significant progress on the question of which Artin groups are duality groups.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 7 (1974), S. 25-29 
    ISSN: 1432-1041
    Keywords: Pindolol ; uraemia ; pharmacokinetics ; β-blockade
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The elimination of pindolol in 25 patients with various degrees of renal failure has been studied after an intravenous dose of 3 mg. A linear correlation was not found between the elimination rate of pindolol and the endogenous creatinine clearance, and the half-life of the unchanged drug was independent of the severity of the renal failure. This implies greater metabolism of pindolol in anuric patients and the extrarenal elimination rate constantk mwas increased. Three patients with severe renal failure were given 3 mg14C-pindolol. They showed almost constant plasma levels of radio-activity for 6 h and then slow excretion with a half-life of 48 h, because of accumulation of metabolites in the blood. Up to 90% of the metabolites are glucuronides and sulphates which have no beta-blocking or other clinical activity. Thus, to produce beta-adrenergic blockade the same dose of indolol is required in healthy patients as in those with uraemia.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 7 (1974), S. 429-432 
    ISSN: 1432-1041
    Keywords: Pharmacokinetics ; retard formulations ; retard quotients ; sustained release ; half-value duration ; dibenzepin hydrochloride
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary In vivo criteria are proposed for the assessment of retard formulations. If the pharmacokinetics of the retard formulation tested and of the normal preparation are known, in either plasma or urine, two retard quotients can be defined which define the sustained release. One of the quotients refers to the width (half-value duration) and the other to the height of the plasma concentration time curve of the retard form as compared to the conventional preparation. From these criteria it is possible to draw useful conclusions about thein vivo quality of a retard formulation in an early stage of development of the dosage form. As a practical example the criteria have been applied to Noveril® 240 tablets (dibenzepin hydrochloride), the retard effect of which has made it possible to reduce the frequency of administration from three times daily to once a day.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary During blood circulation statistically significant alterations of clotting factor activities, thrombin time and fibrin polymerization time are observed. In relation to the blood from the right heart the activity of factor VIII increases with each passage of a capillary system. Prothrombin and factor X on the other hand show a decrease in activity. Thrombin time and fibrin polymerization time become longer. All these changes are obviously fully reversible by a passage through the liver. Thrombocyte counts behave differently. They are highest in the vena cava (blood from the bone marrow). The most marked changes of all parameters are seen in the renal venous blood.
    Notes: Zusammenfassung Bei der Kreislaufpassage des Blutes kommt es zu statistisch signifikanten Veränderungen der Aktivitäten von Gerinnungsfaktoren, der Thrombinzeit und der Fibrinpolymerisationszeit. Ausgehend vom Mischblut des rechten Herzens nimmt der Faktor VIII bei Passage eines jeden Capillargebietes an Aktivität zu. Prothrombin und Faktor X nehmen dagegen an Aktivität ab. Thrombinzeit und Fibrinpolymerisationszeit werden länger. Alle diese Veränderungen kehren sich offensichtlich bei der Leberpassage wieder um. Die Thrombocytenzahlen verhalten sich anders. Sie sind in der Vena cava am höchsten (Blut aus dem Knochenmark). Für alle Parameter finden sich die stärksten Veränderungen im Nierenvenenblut.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Experimental mechanics 9 (1969), S. 215-219 
    ISSN: 1741-2765
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract An ultrasonic method was developed for making approximate measurements of the thickness of a web moving between parallel guides. Since practical considerations ruled out mechanical contact, a phasesensitive detection scheme for measuring the thickness of the air spaces between the fixed guides and the web was chosen so that: (1) the apparatus was insensitive to variations in surface properties of the web, and (2) a linear response was closely approximated. Unwanted reflections and their influence were reduced through the design of the acoustical geometry and a dummy arrangement. Another set of dummies compensated for changes in sound velocity with temperature changes. Performance curves of the ultrasonic measuring device show that the device performs satisfactorily if all electrical-to-sonic transducers have identical temperature vs. phase-lag characteristics at the operating frequency.
    Type of Medium: Electronic Resource
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