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  • COMPUTER PROGRAMMING AND SOFTWARE  (10)
  • Polymer and Materials Science  (9)
  • Life and Medical Sciences  (6)
  • MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT  (6)
  • 1995-1999  (8)
  • 1990-1994  (22)
  • 1940-1944  (1)
Collection
Keywords
Publisher
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Studies on amphibian metamorphosis XVIII. The development of structures in the dermal plicae of Rana sylvatica (1941)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 68 (1941), S. 303-327 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1050680206
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  • 2
    Electronic Resource
    Electronic Resource
    Direct observation of cell wall glucans in whole cells of Saccharomyces cerevisiae by magic-angle spinning 13C-nmr (1994)
    New York : Wiley-Blackwell
    Biopolymers 34 (1994), S. 1627-1635 
    Details
    ISSN: 0006-3525
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Intact cells of Saccharomyces cerevisiae were examined as an aqueous paste by 13C-nmr spectroscopy with direct polarization and magic-angle spinning. The spectra obtained were highly resolved, showing numerous resonances in the 60-105 ppm range that were assigned to carbons of a liquid-like domain of the cell wall glucan. Assignments were confirmed by running the spectrum of S. cerevisiae in which the cell wall glucans were labeled with [13C] by feeding the cell [13C ] galactose. The spectra indicate that the glucan in the cell wall of intact S. cerevisiae assumes a helical conformation and suggest that strain 17A fed with galactose preferentially incorporates the resulting glucose into β(1 → 3)-linkages. © 1994 John Wiley & Sons, Inc.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bip.360341207
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  • 3
    Electronic Resource
    Electronic Resource
    Microstructural characterisation of nanocrystalline GaN prepared by detonations of gallium azides (1998)
    New York, NY [u.a.] : Wiley-Blackwell
    Advanced Materials for Optics and Electronics 8 (1998), S. 135-146 
    Details
    ISSN: 1057-9257
    Keywords: gallium nitride ; nanocrystallites ; detonation ; gallium azide ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: High quality nanoscale, phase-pure hexagonal gallium nitride (GaN) crystallites have been synthesized by the thermal induced detonation of molecular precursors of the type (R3N)Ga(N3)3 (R=CH3, C2H5, etc.). The method allows the control of the particle size regime from 2 to about 1000 nm. X-ray diffraction and Rietveld simulations revealed an anisotropic platelet-like shape of the particles. The obtained GaN material was as well characterized by transmission electron microscopy and electron diffraction, photoluminescence spectroscopy, SEM, IR, RAMAN, thermal gas effusion/mass spectrometry, thermal analysis, elemental analysis. Gas absorption measurements (BET method) showed a specific surface area of about 90 m2 · g-1. © 1998 John Wiley & Sons, Ltd.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Possible role of variant RNA transcripts in the regulation of epidermal growth factor receptor expression in human placenta (1995)
    New York, NY [u.a.] : Wiley-Blackwell
    Molecular Reproduction and Development 41 (1995), S. 149-156 
    Details
    ISSN: 1040-452X
    Keywords: Epidermal growth factor receptor ; EGFR ; Receptor regulation ; Alternate mRNA ; Placenta ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: Epidermal growth factor receptor (EGFR) plays an important role in growth and differentiation. The human placenta expresses high levels of the receptor. In the placenta, as in many other human tissues, EGFR is encoded by two RNA transcripts of 5.8 kb and 10.5 kb. The placenta also expresses a putative truncated EGFR transcript of 1.8 kb, which encodes only the ligand binding domain of the receptor. The etiology and role of these variant EGFR transcripts is unknown. Using the human placenta as a model to study this area, we report (1) the relationships among these transcripts suggest that the induction of alternate pathways of EGFR RNA processing is involved in their etiologies; (2) the 10.5 kb transcript may be the principal transcript involved in determining the level of the protein receptor; and (3) the isolation of a soluble protein with characteristics consistent with a translational product corresponding to the 1.8 kb transcript, which may act in regulating the activity of EGFR. Together these results suggest that alternate processing of EGFR RNA into variant transcripts may represent a novel mechanism involved in the regulation of the receptor protein. © 1995 Wiley-Liss, Inc.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrd.1080410205
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  • 5
    Electronic Resource
    Electronic Resource
    Role of cyclic plastic deformation in the wear of UHMWPE acetabular cups (1995)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 29 (1995), S. 619-626 
    Details
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: The mechanisms of wear in ultra-high-molecular-weight polyethylene (UHMWPE) acetabular cups were investigated on both laboratory simulator-tested cups and a clinically retrieved component. Two different levels of wear process were identified: one characterized by the formation and detachment of platelet-like flakes from initial machining marks, and the other by the formation of fine ripples and fibrils by repeated passes of microscopic asperities on the femoral head. Both wear processes could be described by a criterion of critical plastic strain. A theoretical model was developed to account for the generation of the microscopic wear particles based on such a critical strain criterion. Its predictions of the dependence of the UHMWPE wear rate on surface roughness and applied load were in excellent agreement with previously published experimental correlations. © 1995 John Wiley & Sons, Inc.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jbm.820290509
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  • 6
    Electronic Resource
    Electronic Resource
    Infrared spectroscopic investigations of unpoled poly(vinylidene fluoride) films in an electric field (1991)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 42 (1991), S. 319-322 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: In Poly(vinylidenfluorid) (PVDF) kann die Dipoldrehung im elektrischen Feld anhand der Absorptionsänderung der Infrarotbanden bei 445 cm-1 und 510 cm-1 verfolgt werden. Anknüpfend an vorhergehende Untersuchungen wurde an PVDF-Folien mit aufgedampften infrarotdurchlässigen Elektroden ein stufenweise erhöhtes Feld angelegt und das Infrarotspektrum aufgenommen. In Anlehnung an das früher entwickelte Modell wurden die normierten Absorptionen der beiden Banden gegeneinander aufgetragen, wobei sich eine Abweichung vom erwarteten linearen Zusammenhang in der Feldabhängigkeit der Absorption beider Banden zeigte. Interpretiert wird diese Abweichung mit der feldinduzierten Zunahme des Anteils langer Trans-Sequenzen.
    Notes: In poly(vinylidene fluoride) (PVDF) the rotation of the dipoles in an electric field can be followed by the change of the infrared absorption bands at 445 cm-1 and 510 cm-1. Referring to preceding measurements on PVDF foils with evaporated infrared transparent electrodes a stepwise increased field was applied. Following the formerly developed model, the normalized absorptions of both bands were plotted one against the other. A deviation from the expected linear relation in the field dependence of both absorption bands was found. This behaviour is interpreted by an increase of the amount of long trans sequences.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1991.010420707
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  • 7
    Electronic Resource
    Electronic Resource
    Internal stresses, dimensional instabilities arid molecular orientations in plastics. Von L. C. E. STRUIK. ISBN 0-471-92642-6. Chichester/New York/Brisbane/Toronto/Singapore: .John Wiley & Sons, 1990. XVII, 453 S., geb., £ 45.00. (1991)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 42 (1991), S. 136-136 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1991.010420225
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  • 8
    Electronic Resource
    Electronic Resource
    Infrared spectroscopic study of field-induced band shifts and dipole orientation in poly(vinylidene fluoride) (1992)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 43 (1992), S. 1-7 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Uniaxial gereckte, in der ß-Modifikation vorliegende PVDF-Filme wurden bei anliegendem elektrischen Feld infrarotspektroskopisch untersucht. In bis zu 13 Feldstärkecyclen wurden dabei sowohl die Feldstärke als auch die Richtung des anliegenden Feldes variiert. Die feldinduzierten Frequenzänderungen der Banden bei 445 cm-1 (CF2-rocking) und 510 cm-1 (CF2-bending) wurden detailliert registriert. Modellrechnungen zum Einfluß des Feldes auf die Schwingungsfrequenzen demonstrieren die Möglichkeit, mit Hilfe der Infrarotspektroskopie zwischen entgegengesetzten Dipolrichtungen zu unterscheiden. Die experimentellen Ergebnisse deuten auf die Existenz eines remanenten Feldes in der Probe infolge der Einwirkung des äßeren Feldes hin.
    Notes: Infrared spectra of uniaxially drawn ß-PVDF films under the influence of an electric field were registered. The direction and the strength of the applied field were changed in up to 13 cycles. The field-induced frequency changes of the bands at 445 cm-1 (CF2-rocking) and 510 cm-1 (CF2-bending) were studied in detail. Model calculations concerning the influence of the field on band frequencies are presented revealing the possibility to discriminate by IR spectroscopy between opposite dipole directions. The experimental results suggest the formation of a remanent field in the samples during poling.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1992.010430101
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  • 9
    Electronic Resource
    Electronic Resource
    Identification and characterization of the KlCMD1 gene encoding Kluyveromyces lactis calmodulin (1998)
    New York, NY [u.a.] : Wiley-Blackwell
    Yeast 14 (1998), S. 869-875 
    Details
    ISSN: 0749-503X
    Keywords: calmodulin ; CMD1 ; ALG1 ; K. lactis ; EF hand ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: The KlCMD1 gene was isolated from a Kluyveromyces lactis genomic library as a suppressor of the Saccharomyces cerevisiae temperature-sensitive mutant spc110-124, an allele previously shown to be suppressed by elevated copy number of the S. cerevisiae calmodulin gene CMD1. The KlCMD1 gene encodes a polypeptide which is 95% identical to S. cerevisiae calmodulin and 55% identical to calmodulin from Schizosaccharomyces pombe.Complementation of a S. cerevisiae cmd1 deletion mutant by KlCMD1 demonstrates that this gene encodes a functional calmodulin homologue. Multiple sequence alignment of calmodulins from yeast and multicellular eukaryotes shows that the K. lactis and S. cerevisiae calmodulins are considerably more closely related to each other than to other calmodulins, most of which have four functional Ca2+-binding EF hand domains. Thus like its S. cerevisiae counterpart Cmd1p, the KlCMD1 product is predicted to form only three Ca2+-binding motifs. The KlCMD1 sequence has been assigned Accession Number AJ002021 in the EMBL/GenBank database. © 1998 John Wiley & Sons, Ltd.
    Additional Material: 3 Ill.
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  • 10
    Electronic Resource
    Electronic Resource
    Yeast Protein Serine/Threonine Phosphatases: Multiple Roles and Diverse Regulation (1996)
    New York, NY [u.a.] : Wiley-Blackwell
    Yeast 12 (1996), S. 1647-1675 
    Details
    ISSN: 0749-503X
    Keywords: yeast ; phosphorylation ; protein phosphatase ; PP1 ; PP2A ; PP2B ; calcineurin ; Sit4 ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: Since the isolation of the first yeast protein phosphatase genes in 1989, much progress has been made in understanding this important group of proteins. Yeast contain genes encoding all the major types of protein phosphatase found in higher eukaryotes and the ability to use powerful genetic approaches will complement the wealth of biochemical information available from other systems. This review will summarize recent progress in understanding the structure, function and regulation of the PPP family of protein serine-threonine phosphatases, concentrating on the budding yeast Saccharomyces cerevisiae.
    Additional Material: 2 Ill.
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