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  • Articles: DFG German National Licenses  (27)
  • 1985-1989  (19)
  • 1910-1914  (8)
  • 1
    Electronic Resource
    Electronic Resource
    In situ scanning tunneling microscopy studies of the underpotential deposition of lead on gold (111) (1989)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 93 (1989), S. 2181-2184 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100343a001
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Nonstandard methods in combinatorics and theoretical computer science (1988)
    Springer
    Studia logica 47 (1988), S. 181-191 
    Details
    ISSN: 1572-8730
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Philosophy
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00370549
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    188. Die komplette implantierte PTC-Drainage (1987)
    Springer
    Langenbeck's archives of surgery 372 (1987), S. 841-841 
    Details
    ISSN: 1435-2451
    Keywords: Malignant bile duct closure ; PTC drainage ; Maligner Gallenwegsverschluss ; PTCD
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei Patienten mit malignem Gallenwegsverschluss besteht eine Möglichkeit zur Palliation in der PTCD. Um die Nachteile der Methode zu reduzieren, haben wir in geeigneten Fällen den äusseren Schenkel des Drainage-Katheters mit einem Injektionsport verbunden und subcutan implantiert. Auch ohne äussere Drainage kann der Katheter somit über den Port gespült werden. Bei den 10 bisher implantierten Ports kam es zu keiner Lumenverlegung. Um das Infektionsrisiko nicht zu erhöhen, ist die Anlage der PTCD und die Implantation in der gleichen Sitzung notwendig.
    Notes: Summary One possible method of provide palliative treatment for patients with malignant bile-duct closure is the use of PTC drainage. To minimize the disadvantages of the method, in certain cases we connected the external branch of the catheter with an injection porta and implanted it subcutaneously. Even without external drainage, the catheter can be flushed by using the porta. So far, there have been no cases of catheter blockage in the ten portae implanted. To reduce the risk of infection, PTC drainage and subcutaneous implantation must be carried out at the same time.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01297972
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Preface (1988)
    Springer
    Annals of operations research 16 (1988), S. IX 
    Details
    ISSN: 1572-9338
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02283731
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Planning systems and artificial intelligence (1988)
    Springer
    Annals of operations research 16 (1988), S. 1-12 
    Details
    ISSN: 1572-9338
    Keywords: Planning systems ; expert systems ; knowledge representation ; inspection plans ; construction plans
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Notes: Abstract Traditional O.R. systems are compared with problem solving in Artificial Intelligence via Expert Systems. The discussion centers on explicit knowledge representation. The general aspects are illustrated by two planning systems: · LESP 2: A learning system for inspection plan generation · IDA: A system for finding functions and solutions in construction
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02283732
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Structure and reactivity of Zn-Cr mixed oxides. Role of non-stoichiometry in the catalytic synthesis of methanol (1989)
    Springer
    Catalysis letters 3 (1989), S. 65-72 
    Details
    ISSN: 1572-879X
    Keywords: Methanol synthesis ; zinc-chromium mixed oxides
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The catalytic behaviour of Zn/Cr mixed oxides with different compositions was investigated as a function of the bulk and surface properties. It was observed that non-stoichiometric spinel-type phases were stable also in the reaction conditions, in which zinc-surface enrichment did not occur. The maximum productivity in methanol was observed for monophasic non-stoichiometric spinel-type samples with a Zn/Cr ratio near to one, whereas the samples richest in zinc, for which a side phase, ZnO also was detected, showed a strong decrease in activity. The catalytic data support the hypothesis that non-stoichiometric spinel is the active phase for the synthesis of methanol on coprecipitated Zn-Cr catalysts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00765056
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Influence of Cr loading on the catalytic properties of CrO3/SiO2 catalysts in 2-propanol conversion (1985)
    Springer
    Reaction kinetics and catalysis letters 29 (1985), S. 211-218 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Каталитическая активность образцов CrO3/SiO2 для превращения 2-пропанола обуславливается лишь небольшим количеством активных центров (оцениваемое около 1017 на грамм катализатора), в то время как избыток хрома и не повышает каталитическую активность и не ингибирует реакциь на активных центрах. Лишь тогда, когда загрузка хрома достаточно высока чтобы позволить образование блоко-подобных агломератов (5 вес.% Cr), 2-пропанол превращается также на этой CrOx поверхностной фазе, но со значительно более высокой энергией активации.
    Notes: Abstract Catalytic activity of CrO3/SiO2 samples for 2-propanol conversion is governed by only a small amount of active centers (estimated to be around 1017 per gram of catalyst), whereas excess chromium neither develops catalytic activity nor inhibits the reaction on the active sites. Only when the chromium loading is high enough to allow formation of bulk-like agglomerates (5 wt.% Cr) is 2-propanol converted also on this CrOx surface phase, but with a significant higher activation energy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02067970
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Molecular oxidic phases of diluted silica supported vanadia (1985)
    Springer
    Reaction kinetics and catalysis letters 27 (1985), S. 109-114 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Различные поверхностные фазы ванадиевых катализаторов на носителе SiO2 были охарактеризованы статической адсорбцией, а также экспериментами восстановления и реокисления в условиях вакуума. Очевидная подвижностя ванадия, участвующего в некоторых ступенях получения, приводит к увеличению разнообразия исходных фаз прекурсора в зависимости от условий предварительной обработки и концентрации SiOH.
    Notes: Abstract Different surface phases of silica supported vanadia catalysts have been characterized by static adsorption, reduction, and reoxidation experiments under vacuum conditions. The obvious mobility of vanadium involved in some preparation steps gives rise to a diversification of initial precursor phases as a function of pretreatment conditions and SiOH concentration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02064468
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Catalytic relevance of phase transformations accompanying the gas phase oxidation of ethanol on silica supported vanadia (1985)
    Springer
    Reaction kinetics and catalysis letters 27 (1985), S. 115-119 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Активность нестационарного состояния газофазного окисления этанола в простом проточном реакторе и ее зависимость от предварительной обработки и условий реакции могут быть объяснены на основе ранее предложенной модели возможных поверхностных фаз ванадия на кремневом носителе.
    Notes: Abstract Nonsteady state activity during the gas phase oxidation of ethanol in a simple flow reactor and its dependence on pretreatment and reaction conditions can be explained utilizing the previously presented model of possible surface vanadia phases on silica.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02064469
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    An all-glass vibration mixed reactor for gas/solid catalyzed reactions (1987)
    Springer
    Reaction kinetics and catalysis letters 34 (1987), S. 21-27 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Описан стеклянный лабораторный реактор с вибрционным перемешиванием, работающий в режиме бакового реактора с непрерывным перемешиванием. Изучены характеристики смешивания и переноса массы, последняя для конверсии пропан-2-ола на катализаторе CrO3/SiO2. Результаты пополняют даннюе, сообщенные в ссылке [6].
    Notes: Abstract An all-glass vibration mixed laboratory reactor is described which operates as a continuous stirred tank reactor. The mixing and mass transfer characteristics are studied, the latter for the conversion of propan-2-ol in air on the CrO3/SiO2 catalyst system. The results complete data of Ref. [6].
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02069195
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    Paper (German National Licenses)
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