ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

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

Proceed reservation?

Export
Filter
  • Wiley-Blackwell  (711)
  • BioMed Central  (98)
Collection
  • 1
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 11 (1984), S. 472-474 
    ISSN: 0306-042X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 13C/12C ratios of the carboxyl and methyl carbons of acetic acid were determined by two published methods, using the thermal decomposition of sodium acetate and calcium acetate respectively. Comparison of the results obtained on a variety of samples revealed a systematic disagreement of 4.0% between the two methods. The source of this discrepancy is shown to be a fractionation associated with the calcium acetate method.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
  • 3
    ISSN: 0947-3440
    Keywords: Bicyclo[4.2.0]octa-1,3,5-triene ; Chromium complexes ; [4+2] Cycloadditions ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The syntheses of the tricarbonylchromium complexes 2 and 3 of 1-oxobenzocyclobutene and 1-hydroxybenzocyclobutene are described. Alcoholate 6 of 3 undergoes a ring opening to the corresponding ortho-quinodimethane intermediate between -30 and -20°C, which is trapped by dienophiles with high diastereoselectivity. While with most dienophiles products with a 1,2-cis configuration (7, 8, 10) are formed, vinyl sulfones react in an exo-selective cycloaddition with formation of 1,2-trans-configurated cycloadducts (12, 13). The configuration of the cycloadduct with phenyl vinyl sulfone is confirmed by an X-ray crystal structure analysis. As one of the important aspects of the chemistry of benzocyclobutene complexes is the chirality of compounds like 2 and 3, the enantiomeric resolution has been achieved via the semioxamazones of ketone 2.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 34 (1983), S. 102-106 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: On the chemisorptive interaction of hydrogen with the components carbon and iron of steelA tensioned steel of high tensile strength may fail while being under the influence of small amounts of hydrogen. Atomic hydrogen in the metal forms metastable complexes with inner and outer surfaces which weaken the metal-metal-bonds in the lattice. Indications of that already emerge when studying the effect of hydrogen on single iron-carbon-bonds.
    Notes: Bei einem gespannten Stahl hoher Zugfestigkeit können schon geringe eindiffundierte Wasserstoffmengen zum Versagen führen. Der Gefügezusammenhalt wird hierbei dadurch vermindert, daß atomarer Wasserstoff an inneren und äußeren Oberflächen metastabile Komplexe bildet, welche die chemischen Bindungskräfte des Metallgitters herabsetzen. Anhaltspunkte hierfür sind bereits aus der Untersuchung des Wasserstoffeinflusses auf isolierte Eisen-Kohlenstoff-und Eisen-Eisen-Bindungen zu entnehmen.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 337 (1995), S. 647-654 
    ISSN: 0941-1216
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Structure of Basic Zinc-O,O′-2-ethylhexyldithiophosphates in Apolar Aprotic SolventsA sample of technically used Zinc-O,O′-2-ethylhexyldithiophosphate enriched by basic Zinc-O,O′-2-ethylhexyldithiophosphates (i-C8-ZnDTP) was investigated in aprotic apolar solvents by integral and structure specific analytical methods. The results let us suppose that the structure of basic i-C8-ZnDTP in apolar aprotic solvents can be described by an Zn3-complex of type ZnO(ZnDTP)2.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 6
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Chlorine corrosion encountered with the generation and processing of LURGI pressure gasification gas made from coalAfter a brief period of operation, a pressure gasification plant was found to be affected by corrosion of the apparatus which could be mainly attributed to chlorine attack. Chlorine reached the generators in raw coal containing chlorides. A number of measures designed to prevent such corrosion are described; but it was only through a cladding of highly alloyed chrome-nickel steel that satisfactory operating periods could be obtained. The paper also describes damage by chlorine to a tar distillation plant, to the ammonium sulphate plant and a pressure refining plant for petrol, as well as measures designed to prevent such damage.
    Notes: Nach kurzer Betriebszeit trat in einer Druckvergasungsanlage Korrosion der Apparate auf, die überwiegend auf Chlor-Angriff zurückgeführt werden konnte. Chlor gelangte mit einer chloridhaltigen Rohkohle in die Generatoren. Verschiedene Maßnahmen zur Verhütung des Angriffs werden beschrieben; erst Panzerung mit hochlegiertem Chrom-Nickel-Stahl führte zu befriedigend langen Betriebszeiten. Weiter werden Schäden durch Chlor in der Teerdestillationsanlage, dem Ammonsulfatbetrieb und in einer Druckraffinationsanlage für Benzin und Maß nahmen zu ihrer Verhütung beschrieben.
    Additional Material: 15 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 216 (1933), S. 49-65 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Kaliumbenzolsulfonat sorbiert in reversiblem Prozess Gase und Dämpfe in Abhängigkeit von Druck und Temperatur.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 236 (1938), S. 221-224 
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Rapid Communications in Mass Spectrometry 5 (1991), S. 145-148 
    ISSN: 0951-4198
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Examination, by optical microscopy, of the matrix/analyte morphology of a sample propared from a droplet in matrix-assisted UV laser-desorption mass spectrometry (MUVLDMS) reveals that the matrix crystallizes to a large extent, thus altering the concentration of the material in regions on the surface from that of the bulk applied solution. Microscopy reveals that vanillic acid and to a lesser extent nicotinic acid matrices form prominent crystalline rings around the dried sample spot while sinapic acid forms a more uniform dispersion of the crystallized matrix. Insulin analyte investigated in this report tendss to form a thin isotropic phase in the center of the drops. The first reported use of a KrF excimer laser (249 nm) in MUVLDMS is also discussed.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 10
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 44 (1993), S. 20-23 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Dry chemical pretreatment of titanium and polymers for adhesive bondingTitan alloys have to be pretreated to increase the adhesive bonding strength. Because of environmental reasons dry chemical pretreatment methods are preferred compared to wet chemical techniques. One successful method is a silicatisation referring to the ®Saco-technique. Layers generated by this method on titanium or polymer substrates lead to highly water-resistant adhesive bondings. Also adhesive joints of Ti with polymer show high bond strength when polymer and Ti are ®Saco treated. With a suitable optimization of the technological parameters it is possible to adhesively bond polymers also with anaerobic acrylic esters.
    Notes: Titanlegierungen müssen zur Verbesserung ihrer Hafteigenschaften vorbehandelt werden. Aus Umweltschutzgründen werden trockenchemische Vorbehandlungsmethoden den nasschemischen Techniken vorgezogen. Eine erfolgreiche Methode ist eine Silikatisierung nach der Saco®-Technik. Die bei dieser Methode erzeugten Schichten auf Titan oder Polymeren führen zu hoch wasserbeständigen Klebverbindungen. Auch Klebverbindungen von Titan mit Polymeren besitzen hohe Festigkeit, wenn beide Partner nach dem Saco®-Verfahren behandelt wurden. Eine Optimierung der technischen Parameter ermöglicht auch Klebverbindungen unter Verwendung von anaerob härtenden Acrylestern.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...