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  • 1
    Electronic Resource
    Electronic Resource
    Morphological, structural, and chemical layering during the oxidation of alloys. A model for the sulfidation of a iron-chromium-aluminum alloy by hydrogen sulfide (1984)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 88 (1984), S. 6302-6308 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j150669a049
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Morphology of oxide scales formed on titanium (1984)
    Springer
    Oxidation of metals 21 (1984), S. 1-19 
    Details
    ISSN: 1573-4889
    Keywords: titanium oxidation ; multilayered scale ; nonequilibrium self-organization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract High-temperature oxidation of several pure metals and their alloys gives rise to multilayered corrosion scales. This curious morphology has not been the subject of a specific investigation, and its interpretation remains widely open. This paper presents results on titanium foil oxidized in pure oxygen leading to this phenomenon. It analyzes the significant features of the stratification as a function of the main parameters of the reaction kinetics such as temperature, oxygen pressure, oxidation time, and initial thickness of the metallic foil. All the results, including those previously reported, show the importance and the consistency of the studied phenomenon as well as the incapability of providing an unequivocal intepretation at the present time. The analysis of the main results, such as the appearance of a macroscopic order, the existence of boundary limits, and the nonequilibrium state of the structure, shows that a consistent set of data exists to give a meaningful interpretation of multilayered corrosion scales in terms of a nonlinear, far-from-equilibrium organization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00659464
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Effects of methylphenidate on learning a ‘beginning reading vocabulary’ by normal adults (1980)
    Springer
    Psychopharmacology 69 (1980), S. 69-72 
    Details
    ISSN: 1432-2072
    Keywords: Methylphenidate ; Psychostimulants ; Adult learning ; Reading instruction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The effects of methylphenidate on reading was studied by having nine adults learn a beginning vocabulary of 96 Chinese characters under placebo and 5 mg and 10 mg methylphenidate by two teaching methods which differed in the rate at which new items were introduced for practice. Using lists composed of 12 characters and their English equivalents; all items were presented prior to the start of practice trials (simultaneous method), or each item was introduced only as the subject practiced items previously presented (progressive method). Learning performance was analyzed in terms of total errors and errors made at two criterion stages in list acquisition. Overall performance was significantly facilitated by the low (5 mg) dose of methylphenidate, but only with the simultaneous method. Significant drug effects were also obtained at criterion stages which were associated with high error rates. It was concluded that drug effects are likely to be most pronounced in difficult learning situations and that dosage appears to be an important variable for consideration in further studies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00426524
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Methylphenidate oral dose plasma concentrations and behavioral response in children (1982)
    Springer
    Psychopharmacology 76 (1982), S. 329-332 
    Details
    ISSN: 1432-2072
    Keywords: Methylphenidate dosage ; Attention deficit disorder with hyperactivity ; Methylphenidate plasma concentration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The relationship between methylphenidate (MP) oral dose and plasma concentration to social and cognitive behaviors was studied in 25 boys diagnosed as having “attention deficit disorder with hyperactivity”. Children were administered successive 1-week treatment conditions under the following schedule of fixed oral doses given twice daily: placebo; 0.25 mg/kg; 0.50 mg/kg; 1.0 mg/kg; placebo. Teacher and parent ratings showed increased improvement in social behavior as a function of MP dose. No drug effects were obtained on cognitive performance. MP plasma concentrations were significantly associated with oral dose and with measures of social behavior. No relationship was found with cognitive behavior. Side effects at the largest dose were severe enough to require discontinuation of treatment for five children, but were relatively mild for the remaining children.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00449120
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Microwave enhancement of evaporation of a polar liquid. II (1983)
    Springer
    Journal of thermal analysis and calorimetry 28 (1983), S. 49-57 
    Details
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es wurde die bei niedrigem Druck unter Einwirkung von Mikrowellenstrahlung erfolgende Verdampfung einer polaren Flüssigkeit untersucht. Die früher entwickelten konventionellen Theorien zur Beschreibung der Nichtgleichgewichtsbedingungen der verdampfenden Grenzschicht sind in schlechter Übereinstimmung mit den experimentellen Ergebnissen. Es ist möglich, den Einfluss des Mikrowellenfeldes auf die verdampfende Oberflächenschicht durch Modifizierung des Ausdrucks für die Entropieproduktion in Rechnung zu stellen. Eine andere Näherung, die auf dem Konzept beruht, dass Mikrowellen den Druck erhöhen, wurde ebenfalls als zufriedenstellend gefunden.
    Abstract: Резюме Исследовано испарен ие полярной жидкости при низком давлении и обл ученной микроволновым излуч ением. Традиционные т еории, развитые для описани я неравновесных условий испарения на границе раздела, плох о согласуются с экспер иментальными данными. Для этого сле дует учитывать влиян ие микроволновых полей на поверхность испарения путем изме нения выражения для п олучения энтропии. Найдено удо влетворительным и другое приближение, основанное на концеп ции погонного пара, что ми кроволны должны увеличивать д авление.
    Notes: Abstract The evaporation of a polar liquid at low pressure upon exposure to microwave radiation has been investigated. The conventional theories previously developed to describe the non-equilibrium conditions of the evaporating interface are found to be in poor agreement with the experimental results. It is possible to take into account the influence of microwave fields on the evaporating surface by modifying the expression for the entropy production. Another approach, based on the concept that microwaves would increase the pressure, has also been found to be satisfactory.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02105279
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  • 6
    Electronic Resource
    Electronic Resource
    Ineffectiveness of imipramine in children who fail to respond to methylphenidate (1980)
    Springer
    Journal of autism and developmental disorders 10 (1980), S. 129-137 
    Details
    ISSN: 1573-3432
    Source: Springer Online Journal Archives 1860-2000
    Topics: Psychology
    Notes: Abstract Ten hyperactive children who had failed to respond to methylphenidate were treated with imipramine in a placebo-controlled, crossover design. No significant drug effects were obtained either on parent and teacher ratings of the child's behavior or on the child's performance in a laboratory measure of sustained attention. Findings suggest that imipramine has limited clinical usefulness in the treatment of hyperactive children who fail to respond to methylphenidate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02408464
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    Paper (German National Licenses)
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