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  • 11
    Electronic Resource
    Electronic Resource
    Regulating the properties of slips in the production of fused quartz ceramics (1981)
    Springer
    Glass and ceramics 38 (1981), S. 295-297 
    Details
    ISSN: 1573-8515
    Source: Springer Online Journal Archives 1860-2000
    Topics: 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/BF00810534
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  • 12
    Electronic Resource
    Electronic Resource
    Effect of acid treatment of quartz glass on the properties of a quartz ceramic (1982)
    Springer
    Glass and ceramics 39 (1982), S. 107-109 
    Details
    ISSN: 1573-8515
    Source: Springer Online Journal Archives 1860-2000
    Topics: 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/BF00696070
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  • 13
    Electronic Resource
    Electronic Resource
    Electrophoretic forming of products from aqueous suspensions of quartz glass (1973)
    Springer
    Refractories and industrial ceramics 14 (1973), S. 655-658 
    Details
    ISSN: 1573-9139
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Conclusions Castings having a thickness up to 65 mm and an apparent density slightly higher than that of similar specimens slip-cast in plaster of Paris molds were formed by the electrophoretic method from high-concentration suspensions of quartz glass. At a thickness of 30 mm the maximum length of the sheets cast by this method was 1000 mm. The rate of electrophoretic forming is considerably higher than that of slip casting in plaster of Paris molds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01285684
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  • 14
    Electronic Resource
    Electronic Resource
    The speed of sound in graphite as a function of the size of the pores (1974)
    Springer
    Refractories and industrial ceramics 15 (1974), S. 325-328 
    Details
    ISSN: 1573-9139
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Conclusions High-porosity graphite contains two regions in which the speed of the USO varies with the pore size. When the pores are small relative to the ultrasonic wavelength, the USO speed increases within increase in the pore diameter to about 400μ (ratio of the USO wavelength to the mean pore diameterλ/¯D=3–4) and then decreases. The experimental results do not conflict with the analytically predicted relations between the USO speed on the one hand and the overall porosity, pore diameter variance, and Poisson's ratio for the intervening material on the other. The theoretical relation was calculated on the basis of MacKenzie's model of a porous material from the equations of the effective elastic moduli. An analysis was made of the relation between the resistivity of the specimens and the size of the pores. The resistivity data obtained confirms, together with the known thermal conductivity data, the validity of the above hypothesis about the variation of the speed of the USO. The results of this investigation can be used for a more precise determination of variations in the density and strength of graphite products.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01284158
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  • 15
    Electronic Resource
    Electronic Resource
    Adsorption microcalorimetric studies of the interaction between oxygen and an industrial ammonia synthesis catalyst (1980)
    Springer
    Reaction kinetics and catalysis letters 14 (1980), S. 279-282 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Проведено измерение теплот адсорбции кислорода на промышленном катализаторе синтеза аммиака типа CA-IB при 20°C. Обнаружено участие разных форм сорбированного кислорода (с теплотами адсорбции 100 ккал/моль и менее 20 ккал/моль) в формировании пассивирующего (стабилизирующего) слоя катализатора.
    Notes: Abstract Heats of oxygen adsorption on an industrial Ca-IB type catalyst for ammonia synthesis have been measured at 20°C. Participation of various forms of adsorbed oxygen (adsorption heats of 420 kJ/mol and below 84 kJ/mol) in the formation of a passivating (stabilizing) catalyst layer has been found.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02073491
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  • 16
    Electronic Resource
    Electronic Resource
    Interaction between catalysts for ammonia synthesis and oxygen (1986)
    Springer
    Reaction kinetics and catalysis letters 30 (1986), S. 229-235 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Явление обратимого отравления катализатора синтеза аммиака кислородом использовано для устранения пирофорности восстановленных катализаторов путем обработки их смесями азота, водорода или гелия с кислородом при температурах катализа. Исследование кинетики сорбции кислорода, структуры, активности и устойчивости к дальнейшему окислению частично окисленных при различных температурах катализаторов показало, что для устранения пирофорности оптимальными являются температуры 673–773 K.
    Notes: Abstract Reversible poisoning of the catalysts for ammonia synthesis by oxygen has been used to eliminate the pyrophoric nature of the reduced catalysts via their treatment by the mixtures of nitrogen, hydrogen or helium with oxygen at catalysis temperatures. Kinetic studies of oxygen sorption, catalyst structure, activity and stability to the secondary oxidation of the samples partially oxidized at various temperatures have revealed that the optimum temperatures to eliminate the pyrophoric effect are 673–773 K.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02064297
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  • 17
    Electronic Resource
    Electronic Resource
    Scanning electron microscopic study of an industrial catalyst for ammonia synthesis (1979)
    Springer
    Reaction kinetics and catalysis letters 12 (1979), S. 165-170 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Методом сканирующей электронной микроскопии изучена топография поверхности и элементный состав приповерхностных слоев катализатора синтеза аммиака типа CA-IB в исходном пассивированном и дополнительно окисленном состояниях, а также после высокотемпературного взаимодействия с водой.
    Notes: Abstract The surface topography and elemental composition of the near-surface layers of a reduced passivated catalyst for ammonia synthesis have been studied on a scanning electron microscope in the initial state and after high-temperature oxygen treatment as well as removal of the alkali promoter.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02071905
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  • 18
    Electronic Resource
    Electronic Resource
    Electrocatalytic properties of the Ti(OH)3−Mo(III) system in the reduction of molecular nitrogen (1979)
    Springer
    Reaction kinetics and catalysis letters 11 (1979), S. 337-342 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract при исследовании злектрохимического восстановления азота на ртутном катоде, катализируемого гидроокисью T (OH)3−Mo(III), найдено, что максимальный выход по току аммиака (43%) и гидразина (4%) наблюдается при плотности тока 0.5 mA/cm2, что в условиях эксперимента соответсвует потенциалу нулевого заряда амальгамы натрия.
    Notes: Abstract Electrochemical reduction studies of dinitrogen catalyzed by Ti(OH)3−Mo(III) in an alkaline methanol solution on a mercury cathode show that the maximum yield of hydrazine (4%) and ammonia (43%) is observed at 0.5 mA/cm2 current density. In experimental conditions it corresponds to the zero-charge potential of sodium amalgam (−1.86 V).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02079722
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  • 19
    Electronic Resource
    Electronic Resource
    Search for bioorganic compounds and organisms on Mars (1995)
    Springer
    Journal of biological physics 20 (1995), S. 55-59 
    Details
    ISSN: 1573-0689
    Keywords: Mars ; microorganisms ; bioorganic compounds ; qudrupole mass spectrometer ; fluorescent microscope system
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Notes: Abstract A prototype of new instrument is under construction as a part of Russian Mars program to search for bioorganic compounds and microorganisms which might be frozen in rock under the places where the traces of water were found or near the poles of Mars. The proposed instrument consists of a quadrupole mass spectrometer (QMS) to detect chemical compounds and a fluorescent microscope system (FMS) to detect organisms and bioorganic compounds in bulk.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00700420
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  • 20
    Electronic Resource
    Electronic Resource
    Ultrafast photodetectors based on the interaction of microwave radiation and a photoexcited plasma in semiconductors (1998)
    Springer
    Technical physics 43 (1998), S. 1358-1362 
    Details
    ISSN: 1090-6525
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The interaction of microwave radiation with the plasma in photoionized semiconductor photocells (CdS, CdSe) placed in waveguide measurement systems is investigated theoretically and experimentally. The interaction of the characteristic waveguide modes with a photoexcited semiconductor plasma is investigated. The dependence of the reflection coefficient and phase of the microwave radiation on the intensity of the optical radiation to be measured is obtained, and the influence of the surface of the semiconductor photocells on these parameters is investigated. A microwave photodetector design based on a millimeter-wave interferometer is developed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.1259199
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