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  1. Book: ArcGIS Geoverarbeitung

    Liebig, Wolfgang

    erstellen von Geoprozessen mit dem ModelBuilder und Python

    2017  

    Author's details Wolfgang Liebig
    Keywords Softwarewerkzeug ; Raumdaten ; Datenanalyse ; ArcGIS 10.3
    Language German
    Size 322 Seiten, Illustrationen, 24 cm x 17 cm
    Document type Book
    Note Die Nutzung des codierten Zugangs zu zusätzlichen Online-Ressourcen ist aus lizenzrechtlichen Gründen für Bibliotheksnutzer nicht möglich
    ISBN 3879076197 ; 9783879076192 ; 9783879076208 ; 3879076200
    Database Friedrich Loeffler-Institute, Federal Research Institute for Animal Health

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    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  2. Book: ArcGIS Geoverarbeitung

    Liebig, Wolfgang

    erstellen von Geoprozessen mit dem ModelBuilder und Python

    2017  

    Author's details Wolfgang Liebig
    Keywords Softwarewerkzeug ; Raumdaten ; Datenanalyse ; ArcGIS 10.3
    Language German
    Size 322 Seiten, Illustrationen, 24 cm x 17 cm
    Document type Book
    Note Die Nutzung des codierten Zugangs zu zusätzlichen Online-Ressourcen ist aus lizenzrechtlichen Gründen für Bibliotheksnutzer nicht möglich
    ISBN 3879076197 ; 9783879076192 ; 9783879076208 ; 3879076200
    Database Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries

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  3. Article ; Online: Compounding of Short Fiber Reinforced Phenolic Resin by Using Specific Mechanical Energy Input as a Process Control Parameter ; Compoundieren von kurzfaserverstärktem Phenolharz durch Verwendung spezifischer mechanischer Energieeingaben als Prozesssteuerungsparameter

    Maertens, Robert / Liebig, W. / Elsner, Peter / Weidenmann, Kay A.

    2021  

    Abstract: Art. 127, 17 S. ... For a newly developed thermoset injection molding process, glass fiber-reinforced phenolic molding compounds with fiber contents between 0 wt% and 60 wt% were compounded. To achieve a comparable remaining heat of the reaction in all ... ...

    Abstract Art. 127, 17 S.

    For a newly developed thermoset injection molding process, glass fiber-reinforced phenolic molding compounds with fiber contents between 0 wt% and 60 wt% were compounded. To achieve a comparable remaining heat of the reaction in all compound formulations, the specific mechanical energy input (SME) during the twin-screw extruder compounding process was used as a control parameter. By adjusting the extruder screw speed and the material throughput, a constant SME into the resin was targeted. Validation measurements using differential scanning calorimetry showed that the remaining heat of the reaction was higher for the molding compounds with low glass fiber contents. It was concluded that the SME was not the only influencing factor on the resin crosslinking progress during the compounding. The material temperature and the residence time changed with the screw speed and throughput, and most likely influenced the curing. However, the SME was one of the major influence factors, and can serve as an at-line control parameter for reactive compounding processes. The mechanical characterization of the test specimens revealed a linear improvement in tensile strength up to a fiber content of 40-50 wt%. The unnotched Charpy impact strength at a 0° orientation reached a plateau at fiber fractions of approximately 45 wt%.

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    Nr.5
    Keywords thermoset injection molding ; reactive polymer compounding ; glass fiber-reinforced polymers ; phenolic molding compound ; composite fiber content ; composite fiber length ; 660
    Subject code 660
    Language English
    Publishing country de
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

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  4. Book: ArcGIS - ArcView 9 - Personal- und File-Geodatabase - Praktische Einführung

    Liebig, W.

    2008  

    Abstract: Das Buch beschreibt mithilfe von vielen Beispielen die Eigenschaften und Funktionen der Personal- und File-Geodatabase unter ArcGlS-ArcView (ab Version 9.2). - Es ist eine Einführung in das seit ArcGIS 8 existierende Datenformat "Geodatabase" für ... ...

    Abstract Das Buch beschreibt mithilfe von vielen Beispielen die Eigenschaften und Funktionen der Personal- und File-Geodatabase unter ArcGlS-ArcView (ab Version 9.2). - Es ist eine Einführung in das seit ArcGIS 8 existierende Datenformat "Geodatabase" für raumbezogene Daten von ESRI. - Dieses Format unterscheidet sich grundsätzlich von den bisherigen raumbezogenen Datenformaten "Coverage" und "Shape". Während diese beiden Formate file-basiert sind, d. h. Geometrie und Sachdaten in einer bestimmten Anzahl von Dateien gespeichert werden, basiert das neue Format "Geodatabase" auf einer relationalen Datenbank (RDBMS). Man unterscheidet zwischen einer "Server-Geodatabase (ArcSDE)" für Mehrbenutzerbetrieb und einer "Personal-" bzw. "File-Geodatabase" (für Einzelanwender). Gegenstand dieses Buches ist eine Einführung in die Personal-Geodatabase, die auf Access von Microsoft und in die File-Geodatabase, die auf einem Filesystem beruht.
    Keywords Datenanalyse ; Datenverarbeitung ; Computeranwendung ; Informationssystem ; Geographie
    Language German
    Document type Book
    ISBN 3-9810453-6-9
    Database ELFIS - Nutrition, agriculture and forestry information system

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  5. Book: ArcGIS - ArcView 9 - Programmierung - Einführung in Visual Basic (VBA) und ArcObjects

    Liebig, W.

    2007  

    Abstract: Das Buch ist eine Einführung in die Programmierung von ArcGIS 9 (ArcMap und ArcCatalog). Seit der Einführung von ArcGIS 8 mit dem Objektmodell "ArcObjects" kann man ArcGlS (ArcView, ArcEditor, ArcInfo) u.a. mit "Visual Basic for Application" (VBA) ... ...

    Abstract Das Buch ist eine Einführung in die Programmierung von ArcGIS 9 (ArcMap und ArcCatalog). Seit der Einführung von ArcGIS 8 mit dem Objektmodell "ArcObjects" kann man ArcGlS (ArcView, ArcEditor, ArcInfo) u.a. mit "Visual Basic for Application" (VBA) programmieren. VBA ist in ArcGIS integriert und muss nicht zusätzlich angeschafft werden. In dem Buch werden die Grundlagen von Visual Basic und ArcObjects vermittelt und an ausgewählten Themen und Beispielen demonstriert. Es bietet somit einen schnellen und einfachen Einstieg in Visual Basic und das Objektmodell ArcObjects. Das Buch vermittelt zunächst Kenntnisse über die Benutzeroberfläche des Visual BasicEditors und grundsätzliche Funktionen der Programmiersprache Visual Basic. Mit der objektorientierten Programmiersprache VBA werden dann die Objekte von ArcObjects (GIS-Funktionen) mit ihren Eigenschaften und Methoden programmiert.
    Keywords Datenanalyse ; Datenverarbeitung ; Computeranwendung ; Informationssystem ; Geographie
    Language German
    Document type Book
    ISBN 3-9810453-1-4
    Database ELFIS - Nutrition, agriculture and forestry information system

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  6. Article ; Online: Development of an Injection Molding Process for Long Glass Fiber-Reinforced Phenolic Resins

    Maertens, Robert / Liebig, Wilfried / Weidenmann, Kay A. / Elsner, Peter

    2022  

    Abstract: Glass fiber-reinforced phenolic resins are well suited to substitute aluminum die-cast materials. They meet the high thermomechanical and chemical demands that are typically found in combustion engine and electric drive train applications. An injection ... ...

    Abstract Glass fiber-reinforced phenolic resins are well suited to substitute aluminum die-cast materials. They meet the high thermomechanical and chemical demands that are typically found in combustion engine and electric drive train applications. An injection molding process development for further improving their mechanical properties by increasing the glass fiber length in the molded part was conducted. A novel screw mixing element was developed to improve the homogenization of the long fibers in the phenolic resin. The process operation with the mixing element is a balance between the desired mixing action, an undesired preliminary curing of the phenolic resin, and the reduction of the fiber length. The highest mixing energy input leads to a reduction of the initial fiber length L0 = 5000 μm to a weighted average fiber length of Lp = 571 μm in the molded part. This is an improvement over Lp = 285 μm for a short fiber-reinforced resin under comparable processing conditions. The mechanical characterization shows that for the long fiber-reinforced materials, the benefit of the increased homogeneity outweighs the disadvantages of the reduced fiber length. This is evident from the increase in tensile strength from σm = 21 MPa to σm = 57 MPa between the lowest and the highest mixing energy input parameter settings.

    14

    14
    Keywords thermoset injection molding ; phenolic molding compound ; fiber length measurement ; long fiber processing ; plasticizing work ; injection work ; screw mixing element ; process data acquisition
    Subject code 660
    Language English
    Publishing country de
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

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  7. Book: FUNKTIONSFORMEN DER ENDOMETRIALEN STROMAZELLE

    Liebig, Wolfgang

    ELEKTRONENMIKROSKOPISCHE UNTERSUCHUNGEN

    1977  

    Title variant FUNKTIONSFORMEN DER ENDOMETRIALEN STROMAZELLE : ELEKTRONENMIKROSKOPISCHE UNTERSUCHUNGEN
    Size 13 S. : ILL.
    Document type Book
    Note AUS: ARCHIV F. GYNAEKOLOGIE. 223 (1977), S. 19-31 U.D.T.: LIEBIG, W. U. H.-E. STEGNER: DIE DEZIDUALISATION DER ENDOMETRIALEN STROMAZELLE. - HAMBURG, UNIV., FACHBEREICH MEDIZIN, DISS., 1974
    HBZ-ID HT000245249
    Database Catalogue ZB MED Medicine, Health

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    In stock of ZB MED Cologne/Königswinter

    Shelf markLoan statusLocation
    79 E 12 order for loan Magazin

    Order via subito

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  8. Book: ArcGIS - ArcView 9 Programmierung

    Liebig, Wolfgang

    Einführung in Visual Basic (VBA) und ArcObjects

    2010  

    Author's details Wolfgang Liebig
    Keywords Programmierung ; VisualBASIC für Applikationen ; ArcView ; ArcGIS
    Language German
    Size VIII, 214 S., Ill., 22 cm
    Edition 2. Aufl.
    Publisher Points-Verl
    Publishing place Norden u.a.
    Document type Book
    ISBN 9783981288322 ; 3981288327
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  9. Book: ArcGIS - ArcView 9

    Liebig, Wolfgang

    Personal- und File-Geodatabase ; praktische Einführung

    2008  

    Author's details Wolfgang Liebig
    Keywords ArcView ; ArcGIS
    Language German
    Size IX, 132 S., zahlr. Ill., 22 cm
    Edition 2., aktualisierte Aufl.
    Publisher Points-Verl
    Publishing place Norden u.a.
    Document type Book
    ISBN 398104536X ; 9783981045369
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  10. Book: ArcGIS-ArcView 9

    Liebig, Wolfgang

    Personal- und File-Geodatabase ; praktische Einführung

    2008  

    Title variant neun
    Author's details Wolfgang Liebig
    Keywords ArcView
    Language German
    Size IX, 132 S., zahlr. Ill., 22 cm
    Edition 2. aktualisierte Aufl.
    Document type Book
    ISBN 9783981045369 ; 398104536X
    Database Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries

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