ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Role of monomer charge-transfer complexes in the free-radical copolymerization of styrene and fumarodinitrile (1978)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 16 (1978), S. 1137-1145 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The equilibrium constant of the charge-transfer complex of styrene and fumarodinitrile was determined by ultraviolet and NMR measurements. Information about the role of the complex in the copolymerization of the two monomers could be obtained from copolymerization experiments at different monomer concentrations and temperatures. In addition, the influence of a second donor, anisole, was studied. The results show that in the copolymerization of styrene with fumarodinitrile addition of charge-transfer complexes has to be taken into account besides the addition of the free monomers.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1978.170160522
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Entgegnung auf den Aufsatz des Herrn E. Jordis „Über Einwirkung organischer Säuren auf Antimonoxyde“ (1903)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 16 (1903), S. 34-37 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19030160205
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Zur Kenntnis der Benzylpenicilloinsäure (1967)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 50 (1967), S. 2011-2018 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The molar penamaldate value of benzylpenicilloic acid and the influence of large amounts of benzylpenicillin on the estimation of penamaldate values and penamaldate stabilities of benzylpenicilloic acid and ε-(benzylpenicilloyl-α-amido)-caproic acid have been determined. The molar penamaldate values of purified benzylpenicilloate and of benzylpenicillin hydrolyzed in alkali were equal, indicating that benzylpenicillin upon alkaline hydrolysis is converted to penicilloic acid exclusively, with no side reactions occurring to any considerable degree. Benzylpenicilloate mutarotates in neutral solution as well as in alkali, the reaction being unaffected by metal ion complexing with ethylene diamine tetraacetate. ε-(Benzylpenicilloyl-α-amido)-caproate also mutarotates in alkali; no mutarotation occurs however in neutral solution. Different mechanisms of epimerisation have therefore to be considered for the mutarotations of penicilloates and of α-amides of penicilloic acid respectively.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19670500734
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Antigen Synthesis: The Preparation of Selected Dodecapeptide Carriers with Systematically Altered Structures by a Two-Phase Method (1972)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 55 (1972), S. 1062-1074 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The synthesis of a series of dodecapeptide ethyl esters containing L-leucine, L-ala-nine, glycine and L-lysine is described. These peptides are suitable carriers for the preparation of haptenic conjugates to be used in antigenicity studies. The strategy for preparing intermediary hexapeptides has been called a two-phase approach since the elongation of the peptide chain is carried out stepwise in a water-immiscible organic phase, whereas removal of side-products and excess reagent is effected by means of a suitably adapted aqueous phase. The method allows an efficient production of relatively large amounts of fully defined peptide antigens.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19720550403
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Verteilung von markierten Molekeln in Kristallsuspensionen als analytisch und präparativ ausnutzbare Methode der Tracerchemie: Untersuchungen mit 14C-markierten Aminosäuren (1964)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 47 (1964), S. 849-864 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The partition between solution and solid phase of several 14C-labeled amino acids initially present in tracer amounts in the solution phase of stirred suspensions of crystalline amino acids was studied. The partitions examined were stereospecific since the labeled L-amino acid molecules were readily taken up from the solution phase by the corresponding L-crystals whereas the isomeric D-CryStdS incorporated the labeled L-molecules at a reduced rate (as exemplified by alanine and serine) or did not incorporate labeled L-molecules at all. If a sufficiently large excess of crystalline phase as compared to the amount of solute is employed and if incorporation takes place the radioactivity in solution decreases to a small and practically constant fraction of its initial value. The incorporation of various labeled L-amino acids into a crystalline L-leucine phase was also studied. The rate of uptake was characteristic for each amino acid. The partition experiments can be performed easily and may be used for analytical and preparative purposes. From studies of leucine and tyrosine systems it is concluded that the partitions observed depend on dissolution and crystallisation processes coupled with crystal fragments which are present or formed during the stirring in the crystal suspension.
    Additional Material: 17 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19640470320
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Chemische Aspekte der Penicillin-Allergie: Die direkte Penicilloylierung von ε-Aminogruppen durch Penicilline bei pH 7, 4Über einen Teil dieser Ergebnisse wurde bereits kurz berichtet [1]. (1966)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 49 (1966), S. 1695-1707 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The aminolysis of penicillins by ε-amino groups at pH 7,4 is demonstrated. It is shown that penicillenic acid, formed spontaneously under these conditions from penicillins, does not contribute significantly to the penicilloylations observed. Penicillin therefore can directly form penicilloylamides under physiological conditions.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19660490532
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Chemische Aspekte der Penicillin-Allergie: die direkte Bildung der Penicilloyl-Determinanten aus PenicillinÜber einen Teil dieser Ergebnisse wurde bereits kurz berichtet [1]. (1966)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 49 (1966), S. 1707-1714 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The aminolysis of two penicillin-like compounds which cannot form penicillenic acid has been studied: 16-Aminopenicillanic acid (which is highly immunogenic) reacts directly with ε-amino groups at pH 7,4 under CO2-free conditions; the possible role of its polymerisation in this reaction remains to be studied.26-Dinitrophenylamino-penicillanic acid reacts with εamino groups at pH 7,4 as fast as benzylpenicillin and other penicillins. Its immunogenicity in the rabbit is similar to that of benzylpenicillin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19660490533
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Unterscheidung der Penicilloinsäuren von funktionellen Derivaten ihrer. α-Carboxylgruppe mittels Penamaldat-Stabilitätsbestimmung (1966)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 49 (1966), S. 1689-1694 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The distinction between derivatives of penicilloic acids with modified α-carboxyl function and the corresponding penicilloic acids themselves by means of a photometric test is described. The procedure involves conversion of the penicillin derivatives to penamaldates by the action of mercuric chloride, and comparison of the stability of the extinction at 282 nm in phosphate buffer at pH 7,4. The stabilities of the free penamaldates made from penicilloic acids are quite low (half life 4 to 5 minutes) and contrast with the high stabilities of penamaldoyl derivatives obtained from the α-derivatives of penicilloic acids. Some characteristics of the method are discussed, and its potential usefulness for the quantitative analysis of mixtures of penicilloic acid and α-derivatives of penicilloic acid is demonstrated.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19660490531
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Antigenic reactivity: Molecular delineation of monohaptenic anaphylactogens (1983)
    New York : Wiley-Blackwell
    Biopolymers 22 (1983), S. 475-479 
    Details
    ISSN: 0006-3525
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Anaphylactogenic, monohaptenic conjugates carrying a 2,4-dinitro-5-carboxyphenyl substituent as haptenic group and either one of two types of auxiliary groups essential for their anaphylactogenicity were studied. The “hydrocarbon auxiliary groups” require the presence of a hydrocarbon structure such as aliphatic chains of discrete length or planar rings such as provided by phenyl- or nicotinoyl residues and become particularly effective in conjunction with a carboxylate group. The benzylpenicilloyl group is an effective auxiliary structure, but the thiazolidine ring as such is not. It appears that the distance between haptenic and hydrocarbon auxiliary groups can be quite large. The “carbohydrate auxiliary group” becomes effective via a different mechanism. It requires disaccharide residues or two closely connected monosaccharides. Single monosaccharides are ineffective. A concept of interest with regard to drug allergy is the possibility that attachment of a single haptenic molecule to a glycoprotein constitutes an anaphylactogen.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bip.360220160
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Phosphoprotein intermediate in the ca2+-dependent atpase reaction of macrophage plasma membrane (1979)
    New York, N.Y. : Wiley-Blackwell
    Journal of Supramolecular Structure 10 (1979), S. 433-441 
    Details
    ISSN: 0091-7419
    Keywords: macrophage (alveolar) ; plasma membrane ; Ca2+-ATPase reaction ; membrane phosphorylation ; Ca2+ buffering ; Life Sciences ; Molecular Cell Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: ATPase activity and phosphorylation by [γ-32P] ATP of isolated plasma membrane of alveolar macorphages are stimulated in a parallel fashion by physiologic concentrations of Ca2+, with half-maximal activating effect of this ion at (3-7) × 10-7 M. For various membrane preparations, a direct proportionality exists between Ca2+-dependent ATPase activity and amount of 32P incorporated. Labeling of membrane attains the steady-state level by 10 sec at 0°C, and is rapidly reversed by adenosine diphosphate (ADP). K+ decreases the amount of membrane-bound 32P, mainly by enhancing the rate of dephosphorylation of the 32P-intermediate. Hydroxylamine causes a release of about 90% of 32P bound to the membrane, thus indicating that the 32P-intermediate contains an acyl-phosphate bond. When the labeled plasma membrane is solubilized and electrophoresed on acrylamide gels in the presence of sodium dodecyl sulphate, the radioactivity appears to be largely associated with a single protein fraction of 132,500 ± 2,000 apparent molecular weight. These features of the macrophage Ca2+-ATPase suggest that the enzyme activity might be part of a surface-localized Ca2+-extrusion system, participating in the regulation of Ca2+-dependent activities of the macrophage.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jss.400100406
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...