Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Global solutions of the Navier-Stokes equation with strong viscosity (1992)
    Springer
    Annals of global analysis and geometry 10 (1992), S. 255-261 
    Details
    ISSN: 1572-9060
    Keywords: Navier-Stokes equation ; diffeomorphism groups ; geodesic flow ; 58D30 ; 35Q30
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract Following Ebin and Marsden the Navier-Stokes equation is viewed as a perturbation of a geodesic flow on the group of volume preserving diffeomorphisms on a compact Riemannian manifold. Existence and uniqueness of bounded solutions for all position time is shown by taking a higher order diffusion term.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00136868
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Neural Networks and Structured Knowledge: Knowledge Representation and Reasoning (1999)
    Springer
    Applied intelligence 11 (1999), S. 5-13 
    Details
    ISSN: 1573-7497
    Keywords: neural networks ; knowledge representation ; structured knowledge reasoning ; connectionism ; symbol processing ; hybrid systems
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract This collection of articles is the first of two parts of a special issue on “Neural Networks and Structured Knowledge.” The contributions to the first part shed some light on the issues of knowledge representation and reasoning with neural networks. Their scope ranges from formal models for mapping discrete structures like graphs or logical formulae onto different types of neural networks, to the construction of practical systems for various types of reasoning. In the second part to follow, the emphasis will be on the extraction of knowledge from neural networks, and on applications of neural networks and structured knowledge to practical tasks.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008327412259
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Neural Networks and Structured Knowledge: Rule Extraction and Applications (2000)
    Springer
    Applied intelligence 12 (2000), S. 7-13 
    Details
    ISSN: 1573-7497
    Keywords: neural networks ; rule extraction ; knowledge representation ; structured knowledge ; connectionism ; hybrid systems
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract As the second part of a special issue on “Neural Networks and Structured Knowledge,” the contributions collected here concentrate on the extraction of knowledge, particularly in the form of rules, from neural networks, and on applications relying on the representation and processing of structured knowledge by neural networks. The transformation of the low-level internal representation in a neural network into higher-level knowledge or information that can be interpreted more easily by humans and integrated with symbol-oriented mechanisms is the subject of the first group of papers. The second group of papers uses specific applications as starting point, and describes approaches based on neural networks for the knowledge representation required to solve crucial tasks in the respective application. The companion first part of the special issue [1] contains papers dealing with representation and reasoning issues on the basis of neural networks.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008344602888
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Übergangsmetall-Carbin-Komplexe, LII. (Tricarbonylchrom)-η;6-phenyl als Substituent in Carben- und Carbinkomplexen der VI. Nebengruppe (1980)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 113 (1980), S. 1010-1019 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Transition Metal Carbyne Complexes, LII. (Tricarbonylchromium)-η6-phenyl as Substituent in Carbene- and Carbyne Complexes of the VI. SubgroupThe reaction of tricarbonyl(η6-phenyllithium)chromium with the metalhexacarbonyls of the VI. subgroup and subsequent alkylation by triethyloxonium tetrafluoroborate yields pentacarbonyl-{ethoxy[(tricarbonylchromium)-η6-phenyl]carbene} complexes of chromium, molybdenum, and tungsten (1 - 3). 1 and 3 react with boron trihalides BX3 (X = Cl, Br) by cleavage of the ethoxy group to form trans-tetracarbonylhalogeno[(tricarbonylchromium)-η6-phenylcarbyne]metal complexes 4 - 7. Properties, spectroscopic results, and the X-ray structure analysis of 6 are discussed.
    Notes: Die Umsetzung von Tricarbonyl(η6-phenyllithium)chrom mit den Metallhexacarbonylen der VI. Nebengruppe und anschließende Alkylierung mittels Triethyloxonium-tetrafluoroborat führt zu Pentacarbonyl{ethoxy[(tricarbonylchrom)-η6-phenyl]carben}-Verbindungen des Chroms, Molybdäns und Wolframs (1 - 3). 1 und 3 reagieren mit den Bortrihalogeniden BX3 (X = Cl, Br) unter Abspaltung der Ethoxygruppe zu den trans-Tetracarbonylhalogeno[(tricarbonylchrom)-η6-phenylcarbin]metall-Komplexen 4 - 7. Eigenschaften und spektroskopische Ergebnisse sowie die Röntgenstrukturanalyse von 6 werden diskutiert.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19801130320
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Über Chalkogenolate. 78. Untersuchungen über Glykolkohlensäuren 3. Verhalten von [O2COCH2CH2OH]- und [O2COCH2CH2OCO2]2- in wäßriger Lösung (1977)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 436 (1977), S. 166-168 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Chalcogenolates. 78. Studies on Glycol Carbonic Acids. 3. Behaviour of [O2COCH2CH2OH]- and [O2COCH2CH2OCO2]2- in Aqueous SolutionThe behaviour of K[O2COCH2CH2OH] and Na2[O2COCH2CH2OCO2] in aqueous solutions has been investigated by means of conductivity measurements. The equivalent conductivities of [O2COCH2CH2OH]- and [O2COCH2CH2OCO2]2- are determined.The Stokes radii of the ions, the radii of the hydrated ions, and their diffusions coefficients are calculated.
    Notes: Das Verhalten wäßriger Lösungen von K[O2COCH2CH2OH] und Na2[O2COCH2CH2OCO2] wurde mit Hilfe elektrischer Leitfähigkeitsmessungen bei verschiedenen Temperaturen und Konzentrationen untersucht. Die Äquivalentleitfähigkeiten der Ionen [O2COCH2CH2OH]- und [O2COCH2CH2OCO2]2- wurden bestimmt.Die Stokesschen Radien, die Radien der hydratisierten Ionen und die Grenzwerte der Diffusionskoeffizienten wurden berechnet.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19774360120
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Über Chalkogenolate. 76. Untersuchungen über Glykolkohlensäuren. 1. Alkalimetallglykolmonocarbonate und -glykolidicarbonate (1977)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 436 (1977), S. 149-156 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Chalcogenolates. 76. Studies on Glycol Carbonic Acids. 1. Glycol Monocarbonates and Glycol Dicarbonates of Alkali MetalsThe reactions between CO2 and glycolates lead to glycol carbonates. The compounds \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c} {{\rm M}^{\rm I} \left[{{\rm O}_{\rm 2} {\rm COCH}_{\rm 2} {\rm CH}_{\rm 2} {\rm OH}} \right]} \hfill & {{\rm mitM}^{\rm I} = {\rm Li,Na,K,Rb,Cs}} \hfill \\ {{\rm M}_{\rm 2}^{\rm I} \left[{{\rm O}_{\rm 2} {\rm COCH}_{\rm 2} {\rm CH}_{\rm 2} {\rm OCO}_{\rm 2} } \right]} \hfill & {{\rm mitM}^{\rm I} = {\rm Na,K,Tl}} \hfill \\\end{array} $$\end{document} have been prepared and characterized by different methods. The i.r. spectra have been assigned.
    Notes: Durch Umsetzung von CO2 mit den entsprechenden Glykolaten wurden die Glykolcarbonate \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c} {{\rm M}^{\rm I} \left[{{\rm O}_{\rm 2} {\rm COCH}_{\rm 2} {\rm CH}_{\rm 2} {\rm OH}} \right]} \hfill & {{\rm mitM}^{\rm I} = {\rm Li,Na,K,Rb,Cs}} \hfill \\ {{\rm M}_{\rm 2}^{\rm I} \left[{{\rm O}_{\rm 2} {\rm COCH}_{\rm 2} {\rm CH}_{\rm 2} {\rm OCO}_{\rm 2} } \right]} \hfill & {{\rm mitM}^{\rm I} = {\rm Na,K,Tl}} \hfill \\\end{array} $$\end{document} hergestellt und mit chemischen, differentialthermoanalytischen und massenspektrometrischen sowie mit UV- und 1H-NMR-spektroskopischen Methoden charakterisiert. Die IR-Spektren wurden zugeordnet.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19774360118
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Über Chalkogenolate. 77. Untersuchungen über Glykolkohlensäuren. 2. Glykolmonokohlensäure und Glykoldikohlensäure (1977)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 436 (1977), S. 157-165 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Chalcogenolates. 77. Studies on Glycol Carbonic Acids. 2. Glycol Monocarbonic Acid and Glycol Dicarbonic AcidThe dimethyl etherates of glycol carbonic acids HO(O)COCH2CH2OH · 1,5 (CH3)2O and HO(O)COCH2CH2OC(O)OH · 4 (CH3)2O have been prepared by reaction of a suspension of K[O2COCH2CH2OH] and Na2[O2COCH2CH2OCO2] resp. in dimethyl ether with a solution of HCl in (CH3)2O at -63°C; the dimethylether was distilled off at -78°C in vacuo. The acids were characterized by different methods.By determining the decomposition pressures the heats of formation and the standard entropies of the solid compounds have been determined (data see “Inhaltsübersicht”).The dissociation constants of glycol monocarbonic acid and glycol dicarbonic acid in water have been determined. The thermodynamic datas of the dissociation were calculated.
    Notes: Die Dimethylätherate der Glykolkohlensäuren HO(O)COCH2CH2OH · 1,5 (CH3)2O und HO(O)COCH2CH2OC(O)OH · 4 (CH3)2O wurden durch Umsetzung einer Suspension von K[O2COCH2CH2OH] bzw. von Na2[O2COCH2CH2OCO2] in Dimethyläther mit einer Lösung von HCl in (CH3)2O bei -63°C hergestellt und nach Entfernen des Äthers im Vakuum bei -78°C isoliert. Die Säuren wurden mit verschiedenen Methoden charakterisiert.Durch Bestimmung der Zersetzungsdrücke wurden die Bildungsenthalpien und Normalentropien der festen Verbindungen bestimmt: Die Dissoziationskonstanten der Glykolmonokohlensäure und -dikohlensäure in Wasser wurden bestimmt und die thermodynamischen Standardgrößen der Dissoziation berechnet.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19774360119
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Versprödung von Stahl durch Schwefelwasserstoff (1976)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 27 (1976), S. 237-240 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Steel embrittlement by hydrogen sulfideTensile tests in a pressurized vessel filled with hydrogen sulfide and its mixtures with air or hydrogen show, that at 18 and 130 at hydrogen sulfide produces steel embrittlement in a way comparable to hydrogen; the extent of embrittlement, however, is considerably higher in the case of hydrogen sulphide. Addition of air does not show any influence on embrittlement, while in mixtures with hydrogen embrittlement is less pronounced than under the effect of the pure components. When carrying out such experiments it is necessary to take into account that the experimental apparatus is contaminated by hydrogen sulfide for some time after the experiments, so that during subsequent experiments with pure hydrogen a side effect due to hydrogen sulfide must be expected; this means that in such cases the values obtained are below those obtained for embrittlement in pure hydrogen.
    Notes: Zugversuche in einer Druckkammer, gefüllt mit Schwefelwasserstoff bzw. dessen Gemischen mit Luft oder Wasserstoff zeigen, daß bei Drücken von 18 und 130 at Schwefel-wasserstoff Stahl in der gleichen Weise schädigt wie Wasserstoff; die Wirkung ist jedoch im Falle von Schwefelwasserstoff wesentlich stärker. In den Gemischen mit Luft läßt sich kein Einfluß dieses Zusatzes auf die Versprödung erkennen, während in den Gemischen mit Wasserstoff die Versprödung geringer ist als bei Einwirkung der reinen Komponenten. Bei derartigen Versuchen ist auch zu berücksichtigen, daß die Versuchsapparatur durch Schwefelwasserstoff längere Zeit kontaminiert wird, so daß bei anschließenden Versuchen mit Wasserstoff immer mit einer durch Schwefelwasserstoff bedingten Nebenwirkung zu rechnen ist und die Werte der reinen Wasserstoffversprödung nicht erreicht werden.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19760270405
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    88. Instandhaltungsstrategien für Mehrproduktanlagen (1999)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 71 (1999), S. 998-998 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330710992
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Eine neue Bildungsweise des Alanins (1954)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 66 (1954), S. 297-298 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19540661107
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...