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  • 1
    Electronic Resource
    Electronic Resource
    High-temperature pyrolysis of toluene (1987)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 91 (1987), S. 2148-2154 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100292a034
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  • 2
    Electronic Resource
    Electronic Resource
    A shock tube investigation of major pathways in the high-temperature pyrolysis of benzene (1985)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 89 (1985), S. 2013-2019 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100256a043
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  • 3
    Electronic Resource
    Electronic Resource
    Enhancement of Natural Killer Cell Activity by Nocardia opaca Fractions (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Scandinavian journal of immunology 29 (1989), S. 0 
    Details
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Three molecules derived from Nocardia opaca bacteria, NDCM, NWSMP, and PG, have been shown to express immunomodulating properties. The present study was aimed al assessing the effects of these derivatives on natural killer (NK) activity. Two experimental protocols were adopted, consisting of incubating whole or Percoll fractionated NK cells in vitro with those substances, and the other in which the derivatives were administered in vivo so mice and the activity assessed later. Incubation of spleen cells in vitro with NWSMP or its precursor NDCM promoted NK activity. This effect could be observed after only 2 h of incubation and continued until day 2. Percoll fractions 1–3, which contain most of the NK activity, were enhanced to a similar extent. Band 4, which is usually devoid of such activity, remained unresponsive even after contact with the N. opaca derivatives. PG was practically ineffective upon all the subsets. The results of experiments in vivo correlated with those obtained in vitro in that NWSMP and NDCM, but not PG, promoted NK activity. Bands 1–3 were similarly enhanced, the effect was observed after short treatment times, and could be partially cancelled by the concomitant administration of anti interferon antibodies (anti-IFN Ab). All these findings suggest that the promoting effects of N. opaca derivatives are mediated through alpha/beta IFN. In contrast to the results observed on spleen NK cells. NK cells from the peritoneum displayed susceptibility mainly to PG, and much less to NWSMP or NDCM. The administration of PG to mice in vivo had a particularly marked promoting effect upon the cytotoxic activity of peritoneal cells. One logical explanation for the difference observed between PG and NWSMP or NDCM may be related to the specific IFN inducing properties of these compounds as well as to die different responsiveness of die NK cells present in the spleen and peritoneal cavity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3083.1989.tb01109.x
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  • 4
    Electronic Resource
    Electronic Resource
    Metal contents in the drinking water of Cambay (1978)
    Springer
    Water, air & soil pollution 9 (1978), S. 429-431 
    Details
    ISSN: 1573-2932
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Drinking water samples were collected from different parts of Cambay and were analyzed for alkali metals and trace heavy metals, viz. Na, K, Cu, Zn, Ni, Mn, Co, Pb, Cd, Mg, and Fe. The Pb and Cd concentration was found eight and four times, respectively, greater than the maximum allowable limits. The pH, COD and BOD values are reported.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00213538
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  • 5
    Electronic Resource
    Electronic Resource
    Resacetophenone-formaldehyde resins, I. Metal chelates (1981)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 93 (1981), S. 1-10 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Es werden die Synthese und Eigenschaften eines Resacetophenon (2,4-Dihydroxiacetophenon)-Formaldehyd Harzes beschrieben. Das mittlere Molekulargewicht des Harzes, durch Dampfdruckosmometrie und wasserfreie konduktometrische Titration bestimmt, beträgt 2500 bzw. 2200 g/mol.Von diesem Harz wurden Cu(II)-, Ni(II)- und Co(II)-Chelate hergestellt. Die Elementaranalyse der Chelate ergab ein Verhältnis Metall : Ligand von 1:2. Aus den Reflexionspektren der Chelate konnte geschlossen werden, daß Ni(II)- und Co(II)-Chelate eine tetraedrische Struktur haben, während Cu(II)-Chelate eine quadratisch-ebene Struktur zeigen. Infrarotuntersuchungen zeigen, daß die Metalle über den Sauerstoff der Carbonyl-und Phenolgruppe gebunden sind. Auch die Anwesenheit von Methylenbrücken ist aus den IR-Messungen zu erkennen. Die thermischen Eigenschaften des Harzes und seiner Metallchelate werden diskutiert.
    Notes: Synthesis and properties of a resacetophenone-formaldehyde resin are described. The number average molecular weight of the resin determined by vapour pressure osmometry and nonaqueous conductometric titration is 2500 and 2200 g/mol, respectively.Cu(II), Ni(II) and Co(II) chelates of the resin were prepared. The elemental analysis of chelates indicated a metal to ligand ratio 1:2. From the diffuse reflectance spectra of the chelates it could be concluded that Ni(II) and Co(II) chelates have a tetrahedral structure while Cu(II) chelate has a square planar structure. Infrared spectral studies showed that the metals are co-ordinated through the oxygen of the carbonyl and phenolic groups. The presence of methylene bridges was also indicated from IR spectral studies. The thermal properties of the resin and its metal chelates are discussed.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1981.050930101
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  • 6
    Electronic Resource
    Electronic Resource
    Resacetophenone-formaldehyde resins, IIPart I cf. lit.5.. Chelation ion-exchange properties (1981)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 93 (1981), S. 11-17 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Resacetophenon-Formaldehyd-Harze erwiesen sich für verschiedene Metallionen als selektiv komplexierende Ionenaustauscherharze. Zur Bestimmung der Selektivität der Metallionenaufnahme wurde eine Gleichgewichts-batch-Methode angewandt. Die Methode beinhaltet die Messung der Verteilung eines gegebenen Metallions zwischen einer wäßrigen Lösung und dem Harz. Die Untersuchung wurde über einen weiten pH-Bereich und in Medien verschiedener Ionenstärke durchgeführt.
    Notes: The resacetophenone-formaldehyde (RAP-F) resin showed to be a selective chelating ion-exchange resin for certain metal ions. A batch equilibration method was used in the study of the selectivity of metal ion uptake. The method involved the measurement of distribution of a given metal ion between an aqueous solution and the resin. The study was carried out over a wide pH range and in media of various ionic strengths.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1981.050930102
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  • 7
    Electronic Resource
    Electronic Resource
    Processibility of starch-graft-polyacrylonitrile copolymers (1985)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 136 (1985), S. 135-145 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Mit Polyacrylnitril gepfropfte Stärke wurde aus Stärkegranulat von herkömmlicher Hirse (Penicum Miliaceum, L) hergestellt, und seine Verarbeitungsmöglichkeiten unter Verwendung des Brabender Plasticorders wurden untersucht. Glycerin als bekannter Weichmacher für Stärke ist als Weichmacher für dieses Polymere nicht geeignet. Eine Mischung von 1:1 Stärke : Stärkepfropfpolyacrylnitril und 25% Glycerin kann verarbeitet und zu einem Film extrudiert werden. Die Festigkeit des Films war geringer als die der reinen Stärke. Der Film, der aus dem Pfropfcopolymeren und mit Polymethylmethacrylat gepfropfter Stärke hergestellt war, hatte eine hohe Zugfestigkeit. Über die Daten der Fließaktivierungsenergie, die mit einem Torsionsrheometer erhalten wurden, wird ebenfalls berichtet.
    Notes: Starch-graft-polyacrylonitrile (S-g-PAN) has been prepared from granular starch of common millet (Penicum miliaceum, L) and its processibility has been examined using the Brabender Plasticorder. Glycerine, a known plasticizer for starch does not work as plasticizer for S-g-PAN. A mixture of 1 : 1 starch : S-g-PAN and 25% glycerine can be processed and a film can be extruded. The strength of the film was less than that of pure starch. The film prepared from the mixed graft copolymer of S-g-PAN and S-g-PMA had high tensile strength. The data on flow activation energy obtained from the torque-rheometer are also reported.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1985.051360110
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  • 8
    Electronic Resource
    Electronic Resource
    Thermal behaviour of starches and their graft copolymers with polyacrylonitrile (1987)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 150 (1987), S. 45-64 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Es wurde das thermische Verhalten von 12 verschiedenen Stärken und ihren Pfropfcopolymeren mit Polyacrylnitril (PAN) aus dem nativen und gelierten Zustand mit Hilfe der Differentialkaloriemetrie (DSC) und der Rasterelektronenmikroskopie (REM) untersucht. Alle Stärken wiesen zwei endotherme Peaks bei etwa 65 und 260°C und einen exothermen Peak bei ca. 335°C auf. Das Pfropfcopolymere aus nativer Stärke zeigt einen schwachen endothermen Peak um 65°C und einen exothermen bei 300°C, während gelierte Stärke den charakteristischen exothermen Peak von Polyacrylnitril bei 250°C zusammen mit dem exothermen Peak des Propfproduktes bei 300°C aufweist. Um die endothermen Peaks der Stärke bei 65 und 265°C aufzuklären, wurden REM Untersuchungen durchgeführt. Der erste Peak läßt sich durch Dehydratation beim Erhitzen erklären, während der zweite dem Aufschmelzen von Kristalliten in der Stärke zuzuschreiben ist. Eine spezifische Eigenschaft der Hülsenfruchtstärken ist das Festhalten von Feuchtigkeit, selbst wenn sie im gelierten Zustand gepfropft wurden.
    Notes: Thermal behaviour of twelve different starches and their graft copolymers with polyacrylonitrile (PAN) from granular and gelatinized state, has been examined by differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). All the starches exhibit two endotherms around 65 and 260°C and an exotherm around 335°C. The graft copolymer from granular starch shows a weak endotherm around 65°C and an exotherm around 300°C, while gelatinized starch exhibits the characteristic exotherm of PAN at about 250°C along with the exotherm of graft product at 300°C. Scanning electron microscopic studies were carried out to explain the endotherms of starch at 65°C and 265°C. The former one may be due to heat of dehydration while the latter one is attributed to the fusion of crystallites in the starch. Legumine starches seem to have a specific property of retaining moisture even if they are grafted in gelatinized state.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1987.051500105
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  • 9
    Electronic Resource
    Electronic Resource
    Methyl acrylate/N-phenylmaleimide copolymers, 1. Synthesis of copolymers and effect of copolymer composition on huggins constant KH (1982)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 102 (1982), S. 103-108 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: In dieser Arbeit wird die Herstellung von Methylacrylat/N-Phenylmaleimid-Co-polymeren verschiedener Zusammensetzung durch radikalische Polymerisation in Cyclohexanon mit Azoisobutyronitril als Initiator untersucht. Die Molenbrüche für N-Phenylmaleimid der vier Copolymeren MP-1, MP-2, MP-3 und MP-4 sind 0,0664,0,2344, 0,3905 und 0,5445. Die Zusammensetzung der Copolymeren wurde durch Elementaranalyse bestimmt. Weiter wird die änderung der Huggins-Konstante KH mit der Zusammensetzung für die Copolymeren in den Lösungsmitteln Dimethyl-formamid, Methylethylketon und Cyclohexanon beschrieben. KH hängt vom Lösungsmittel und von der Zusammensetzung der Copolymeren ab.
    Notes: This paper deals with the synthesis of methyl acrylate/N-phenylmaleimide copolymers having different compositions, (mole fractions of N-phenylmaleimide for the four copolymers MP-1, MP-2, MP-3, and MP-4 are 0.0664, 0.3905 and 0.5445, respectively) by free radical solution polymerization in cyclohexanone using azoisobutyronitrile as an initiator. The compositions of the copolymers have been determined by elemental analysis. The variation of the Huggins constant KH with composition for the copolymers in three solvents, methyl ethyl ketone, dimethylformamide and cyclohexanone is described. KH is found to be dependent both on solvent and composition of the copolymers.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1982.051020111
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  • 10
    Electronic Resource
    Electronic Resource
    Resacetophenoneoxime-formaldehyde resins, IV. Chelation ion-exchange properties (1982)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 105 (1982), S. 75-81 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Resacetophenonoxim-Formaldehyd-Harze erwiesen sich für verschiedene Metallionen als selektiv komplexierende Ionenaustauscherharze. Zur Bestimmung der Selektivität wurde eine Gleichgewichts-batch-Methode angewandt. Die Methode beinhaltet die Messung der Verteilung eines gegebenen Metallions zwischen einer wäßrigen Lösung und dem Harz. Die Untersuchung wurde in einem weiten pH-Bereich und in Medien verschiedener Ionenstärke durchgeführt.
    Notes: Resacetophenoneoxime-formaldehyde resins showed to be selective chelating ion exchange resins for certain metal ions. A batch equilibrium method was used in the study of the selectivity of metal ion uptake. The method involved the measurement of distribution of a given metal ion between an aqueous solution and the resin. The study was carried out over a wide pH range and in media of various ionic strengths.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1982.051050108
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