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  • ELECTRONIC COMPONENTS AND CIRCUITS  (2)
  • Organic Chemistry  (2)
  • Teeth  (2)
  • 1
    Electronic Resource
    Electronic Resource
    The expression of the gene coding for parathyroid hormone-related protein (PTHrP) during tooth development in the rat (1995)
    Springer
    Cell & tissue research 280 (1995), S. 283-290 
    Details
    ISSN: 1432-0878
    Keywords: Key words: Parathyroid hormone-related protein (PTHrP) ; Teeth ; In situ hybridization ; Rat (Sprague Dawley)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract. By means of in situ hybridisation studies, it is shown that parathyroid hormone-related protein (PTHrP) mRNA is strongly expressed in the developing enamel organs of rat teeth. In particular, the cervical loop hybridises strongly with the PTHrP probe and expression is maintained at this site throughout life in the permanently erupting incisor teeth. In mature molar teeth, expression is downregulated to low levels and confined to the epithelial cell rests of Malassez and/or cementoblasts which may derive from these. The gene is also expressed at low levels in the tissue overlying the erupting molars and, thereafter, in the junctional epithelia and connective tissue cells of the epithelial attachment on all tooth surfaces. The premise that PTHrP may undergo post-translational processing and that the resultant products could act in different ways raises the possibility of its exerting multiple paracrine actions during tooth development. These could include the control of cell division and local vascular dilation during development.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00307800
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    The expression of the gene coding for parathyroid hormone-related protein (PTHrP) during tooth development in the rat (1995)
    Springer
    Cell & tissue research 280 (1995), S. 283-290 
    Details
    ISSN: 1432-0878
    Keywords: Parathyroid hormone-related protein (PTHrP) ; Teeth ; In situ hybridization ; Rat (Sprague Dawley)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract By means of in situ hybridisation studies, it is shown that parathyroid hormone-related protein (PTHrP) mRNA is strongly expressed in the developing enamel organs of rat teeth. In particular, the cervical loop hybridises strongly with the PTHrP probe and expression is maintained at this site throughout life in the permanently erupting incisor teeth. In mature molar teeth, expression is downregulated to low levels and confined to the epithelial cell rests of Malassez and/or cementoblasts which may derive from these. The gene is also expressed at low levels in the tissue overlying the erupting molars and, thereafter, in the junctional epithelia and connective tissue cells of the epithelial attachment on all tooth surfaces. The premise that PTHrP may undergo post-translational processing and that the resultant products could act in different ways raises the possibility of its exerting multiple paracrine actions during tooth development. These could include the control of cell division and local vascular dilation during development.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00307800
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Anodic Oxidation of Norcamphor in Aqueous Electrolytes (1992)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 334 (1992), S. 37-40 
    Details
    ISSN: 0941-1216
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Norcamphor (1) was anodically oxidized at Pb/PbO2 anodes in 1 M · H2SO4, MeCN/H2O (V/V = 1/1). 3-Oxocyclopentaneacetic acid (3) and oxabicyclo[3.3.0]octan-3-one (4) were obtained with material yields up to 76% and 42%, respectively. The effects of electrode materials, current densities and concentrations were studied. A possible anodic oxidation mechanism was proposed.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19923340107
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  • 4
    Electronic Resource
    Electronic Resource
    Anodic Oxidation of Unsaturated Aliphatic Ethers in aqueous electrolytes (1994)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 336 (1994), S. 602-607 
    Details
    ISSN: 0941-1216
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 2,5-dihydrofuran 1 was galvanostatically oxidized in aqueous electrolytes on Pt and PbO2 anodes at current densities of 10 to 50 mA cm-2. Under acidic conditions maleic dialdehyde 2 was obtained on both electrodes with a current efficiency (c.e) of up to 50%. In the alkaline region (pH 10) 4-hydroxy crotonic aldehyde 3 (Pt) or 2,5-dihydrofuranone 4 (PbO2) become the main products with c.e.'s of 29% and 27%, respectively, depending on the anode material. The influence of pH and of the anode material are discussed in detail. 2,3-dihydrofuran 7, vinyl ethyl ether 8 and for comparison, furan 9 were studied in addition.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19943360708
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  • 5
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    Unknown
    Modified interelement spacing improves Yagi antenna array (1965)
    In:  CASI
    Details
    Publication Date: 2019-05-23
    Description: Symmetrical antenna array is designed by adjusting the Yagi disk interelement spacing so that the grating lobe of the array factor coincides with the first sidelobe of the element pattern.
    Keywords: ELECTRONIC COMPONENTS AND CIRCUITS
    Type: LAR-130
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    Horn antenna with v-shaped corrugated surface (1975)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Corrugated shape is easily machined for millimeter wave application and is better suited for folding antenna designs. Measured performance showed ""V'' corrugations and rectangular corrugations have nearly the same pattern beamwidth, gain, and impedance. Also, ""V'' corrugations have higher relative power loss.
    Keywords: ELECTRONIC COMPONENTS AND CIRCUITS
    Type: LAR-11112
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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