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  • Inorganic Chemistry  (4)
  • Nuclear reactions  (2)
  • Prostaglandin E2  (1)
  • 1
    Electronic Resource
    Electronic Resource
    An investigation of shell model wave functions of ^5^6Fe and ^5^3Mn by the (p, α) reaction using a full microscopic description
    Amsterdam : Elsevier
    Nuclear Physics, Section A 332 (1979), S. 278-288 
    Details
    ISSN: 0375-9474
    Keywords: Nuclear reactions
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0375-9474(79)90002-2
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  • 2
    Electronic Resource
    Electronic Resource
    Analyzing power in the continuum of the (p, αx) and (p, τx) reactions on ^1^2C, ^2^7Al, ^5^8Ni, ^9^0Zr, ^2^0^9Bi at E"p = 72 MeV
    Amsterdam : Elsevier
    Nuclear Physics, Section A 389 (1982), S. 247-260 
    Details
    ISSN: 0375-9474
    Keywords: Nuclear reactions
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0375-9474(82)90518-8
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  • 3
    Electronic Resource
    Electronic Resource
    Efficacy of prostaglandin E2 and ursodeoxycholic acid after portoenterostomy in the prognostically unfavorable type III biliary atresia (1992)
    Springer
    Pediatric surgery international 7 (1992), S. 438-443 
    Details
    ISSN: 1437-9813
    Keywords: Congenital biliary atresia ; Prostaglandin E2 ; Ursodeoxycholic acid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Nineteen patients with type III congenital biliary atresia (CBA) were treated by portoenterostomy. In the histological sections, bile ductule diameters below 100 μm and age-dependent liver fibrosis of grade II–IV were found. In group A, 8 patients received no postoperative choleretic therapy; in group B, 6 patients were treated with prostaglandin E2 (PG E2); and in group C, in 5 patients ursodeoxycholic acid (UDCA) was added to the PG E2 therapy. In the first 3 postoperative months a significant beneficial effect of PG E2 was observed as reduced serum bilirubin and aspartate aminotransferase (AST) levels relative to the untreated group. In group C (UDCA and PG E2) significantly lower serum levels of all liver parameters relative to the untreated group and gradually decreased levels of bilirubin, alanine aminotransferase (ALT), g-glutamyl transferase (GGT), and higher cholinesterase (CHE) activity were observed than in the PG E2 group. During episodes of cholangitis steroids were also added, but alterations in serum bilirubin levels, CHE activity, and bile flow did not improve after any adjunctive therapy. Liver enzyme activity was immediately elevated in groups A and B, but significantly lower in group C. The efficacy of both drugs, PG E2 and UDCA, lasted only for the first 3 post-operative months and failed to improve or delay the progression of hepatic damage. After portoenterostomy, 13 patients (68%), died within 6–32 months, 12 from progressive liver failure and 1 after liver transplantation. Six patients (32%) are alive, 3 after liver transplantation; 2 are jaundice-free and 1 jaundiced patient is on a waiting list for transplantation. In these prognostically poor patients with type III CBA, early liver transplantation is the only feasible option as adjuvant Pg E2, UDCA, and corticosteroid therapy demonstrated no long-term improvement after portoenterostomy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00178824
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  • 4
    Electronic Resource
    Electronic Resource
    Bildung siliciumorganischer Verbindungen. XXXI. Synthese des Brme2Si—CH2—Sime2—C≡C—Sime2—CH2-Sime2Br und dessen Abbau mit HBr (1970)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 372 (1970), S. 59-64 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The synthesis of C6H5me2Si—CH2—Sime2—C≡C—Sime2—CH2—Sime2C6H5 (a) is described, which forms Brme2Si—CH2—Sime2—C≡C—Sime2—CH2-Sime2Br(b) with HBr. The reaction of (b) with HBr (1-4 moles at -78°C) yields Brme2Si—CH2—Sime2Br, as well as 1,2-dibromo-ethane (main products) and Brme2Si—CH2/—Sime2CH = CHBr, Brme2Si—CH2—Sime2CH2—CHBr2.
    Notes: Es wird die Synthese des C6H5me2Si—CH2—Sime2—C≡C—Sime2—CH2—Sime2C6H52 (a) beschrieben, das mit HBr Brme2Si—CH2—Sime2—C≡C—Sime2—CH2—Sime2Br(b) bildet. Der Abbau von (b) mit HBr (1-4 Mol bei -78°C) führt zu Brme2Si—CH2—Sime2Br, sowie 1,2-Dibromäthan (Hauptprodukte) und Brme2Si—CH2—Sime2—CH≡CHBr, Brme2Si—CH2—Sime2—CH2—CHBr2.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19703720106
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  • 5
    Electronic Resource
    Electronic Resource
    Bildung siliciumorganischer Verbindungen. XXXVVorbericht: Z. anorg. allg. Chem. 35, 321 (1970;).. Die metallorganische Synthese von Br[(CH3)2Si—CH2]nBr und [(CH3)2Si—CH2]n; n=2-6 (1970)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 377 (1970), S. 37-47 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 1. C6H5me2SiCH2Br reacts nearly quantitative with Li to C6H5me2SiCH2Li(I), which reacts with Br(me2Si—CH2)2Br(II) to C6H5(me2Si—CH2)3Br. The compounds C6H5(me2Si—CH2)nBr (III), n = 2,3,4,5,6, are formed according to (a) (see Inhaltsübersicht.)By cleavage with Br2 according to (b) (Inhaltsübersicht) the compounds of group (IV) are obtained.With Li they form cyclic Carbosilanes (me2Si—CH2)n; n = 2, 3, 4, 5, 6.2. (I) reacts with Clme2Si—CH2Br as well C6H5(me2Si—CH2)2Br as C6H5me2Si—CH2Br, as Cl(me2Si—CH2)2Br as C6H5(me2Si—CH2)3Br.The reaction is traced to trans-metallation according to (c) (Inhaltsübersicht). By low temperatures the trans-metallation is promoted. A trans-metallation of the Cl(me2Si—CH2)n Br, n 〉 1, compound was not observed.
    Notes: 1. C6H5me2SiCH2Br bildet mit Lithium fast quantitativ C6H5me2SiCH2Li [I], das sich mit Br(me2Si—CH2)2Br [II] zu C6H5(me2Si—CH2)3Br umsetzt. Die Verbindungen C6H5(me2Si—CH2)nBr [III], n = 2, 3, 4, 5, 6 bilden sich nach (a). Durch Spaltung mit Brom nach (b) Werden die Verbindungen der Gruppe IV erhalten. Sie bilden mit Lithium die cyclischen Carbosilane (me2Si—CH2)n; (n = 2, 3, 4, 5, 6).2. (I) bildet mit Clme2Si—CH2Br neben C6H5(me2Si—CH2)2Br auch C6H5me2Si—CH2Br, Cl(me2Si—CH2)2Br sowie C6H5(me2Si—CH2)nBr. Die Umsetzung ist auf eine Ummetallierung nach (c) Zurückzuführen. Bei niedriger Temperatur (-78°C) ist die Ummetallierung begünstigt. Bei der Verbindung Cl(me2Si—CH2)nBr, n 〉 1, wird die Ummetallierung nicht beobachtet.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19703770106
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  • 6
    Electronic Resource
    Electronic Resource
    Bildung siliciumorganischer Verbindungen. XXXVorbericht: Z. anorg. allg. Chem. 368, 337 (1969).. Metallorganische Synthese cyclischer Carbosilane (1970)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 372 (1970), S. 21-58 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: This paper contains: 1The synthesis of the 1.3-disilacyclopentenes (a)(b)(2) and of the 1.3-disilacyclo-butane (c); formulas see above.2The synthesis of the 1.3-disilacyclopentane skeleton (d) and of the SiCl-functional derivatives (e) (f ) (g) (h) (i) as well as of SiH-containing derivatives, e.g. (j).3The chlorination of (i) with SO2,Cl2, yielding (k) and (l), and the formation of (m) from (k) with K-methypyrrolidine.4The synthesis of the spirane (n).5The synthesis of the ten-membered ring(o) and of the unsaturated derivatives (p)and (q). Besides the synthetic routes, spectroscopic data (ir, pmr, and mass spectra) of the cyclic compounds as well as of the intermediate products are given.
    Notes: Es wird berichtet über: 1Die Synthese der 1,3-disilacyclopentene (a) (b)2 und des 1,3-disila-cyclobutans (c) 2Die Synthese des 1,3-Disilacyclopentan-Gerüstes (d) und der SiCl-funktionellen Derivate (e)(f)(g)(h)(i)sowie der SiH haltigen Derivate, z. B. (j) 3Die Chlorierung von (i) mit SO2Cl2 zu (k) und (1) und die Bildung ron (m) aus (k) mit K-Methylpyrrolidin 4Die Synthese des Spirans (n) 5Die Synthese des 10-Ringes (o) und der nngesattigten Derivate (p) und (q). SeFen den Synthesewegen werden spelitroskopische Daten und PMR-Spektren der cyclischen Verhindungen sou ie der Zwischenprodukte angegeben.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19703720105
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  • 7
    Electronic Resource
    Electronic Resource
    Bildung siliciumorganischer Verbindungen. XXXIIIVorbericht: Z. anorg. allg. Chem. 371, 337 (1969).. Reaktion des 1,1,3,3-Tetramethyl-1,3-disila-4-trimethylsilyl-cyclopentens mit HBr (1970)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 374 (1970), S. 229-238 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The ring system of (a), defined in “Inhaltsübersicht”, is cleaved by one mole of HBr already at -78°C, forming mainly (b) besides (c) and (d). At 80°C (b) reacts by β-elimination completely to (e), (f), (g) and (h). As one of the products by the reaction of (a) with 4 moles of HBr (i) is formed by cleavage of (b) with HBr. The course of the reaction at  - 78°C is determined by ring cleavage and following HBr addition. With increasing temperature β-elimination of the addition products becomes the preferred reaction. To explain the reaction course the intermediate product (c) has been synthetized and its decomposition with HBr has been investigated. The reaction products have been identified by n.m.r. spectra.
    Notes: Der Ring des 1,1,3,3-Tetramethyl-1,3-disila-4-trimethylsilylcyclopentens (a) wird bereits bei -78°C mit einem Mol HBr gespalten, wobei bevorzugt neben und (CH3)2 BrSi—CH2—Si(CH3)2—CH=CH—Si(CH3)3 (d) gebildet werden. Bei 80°C setzt sich (b) unter β-Spaltung vollständig um zu (CH3)2 BrSi—CH2—Si(CH3)2—CH=2 (e), (CH3)3SrBr (f). (CH3)2BrSi—CH2—SiBr(CH3)2 (g) und (CH3)3Si—CH=CH2 (h). Mit 4 Mol HBr bildet (a) u. a. (CH3)2BrSi—CH2—Si(CH3)2—CH2—CG2 Br (i), das durch Spaltung von (b) mit HBr entsteht. Ringspaltung und anschließende HBr-Addition bestimmen den Reaktionsabluf bei -78°C. Mit steigender Temperatur macht sich zunehmend die β-Spaltung der Additionsprodukte bemerkbar. Zur Klärung des Reaktionsablaufs wurde die Zwischenverbindung (c) synthetisiert und ihre Umsetzung mit HBr untersucht. Die Identifizierung der Reaktionsprodukte erfolgte über die PMR-Spektren.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19703740303
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