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
  • Chemistry  (280)
  • 1975-1979  (94)
  • 1970-1974  (77)
  • 1960-1964  (62)
  • 1940-1944  (47)
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 54 (1941), S. 213-215 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 323 (1963), S. 57-64 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The degree of electric charging of metal surfaces due to retarding of neutral metallic and semiconducting particles having various velocities has been determined. The effects are supposed to result from the exo-emission of electrons the amount of which depends on the velocities, masses, and impact angles of the particles.From the strong differences between the reactivities of solid substances during and after mechanical working it is concluded that the observed exo-emission is caused by exitation states at submicroscopic surface points.
    Notes: Die elektrische Aufladung von Metalloberflächen bei der Impuls-Bremsung nicht geladener, fliegender, metallischer und halbleitender Partikel verschiedener Geschwindigkeiten wird gemessen. Die beobachteten Erscheinungen lassen sich aus der Exo-Emission von Elektronen herleiten. Diese ergibt sich u. a. aus dem Zusammenhange zwischen der Elektronen-Austrittsarbeit der beteiligten Partner und der Größe der gebremsten Impulse. Die Ladungs-Übergänge hängen Übersichtlich vom Quadrat der Geschwindigkeiten, von der Masse und vom Auftreffwinkel der Körner ab. Einflüsse mechanischer Vorbehandlung der Festkörper, entsprechend früheren Beobachtungen, werden bestätigt.Im Zusammenhange mit den beobachteten großen Unterschieden des Reaktionsvermögens von Festkörpern während der Bearbeitung und nach ihrem Abschluß lassen die beobachteten Exo-Emissionen auf das Auftreten erhöhter Anregungszustände an submikroskopischen Orten während der Impuls-Bremsung schließen.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Biopolymers 10 (1971), S. 1351-1364 
    ISSN: 0006-3525
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The swelling behavior of gelatin gels containing proteoglycans (sulphated proteoglycans from bovine intervertebral discs and a hyaluronate proteoglycan from bovine synovial fluid) when immersed in osmotically active solutions of dextran have been measured. The presence of the proteoglycans markedly affects the internal osmotic contribution to the swelling pressure of the gel. These internal osmotic pressures are considerably in excess of the sum of the osmotic activities of the individual components. This behavior is understood in terms of an entropic interaction between the gelatin and the proteoglycan molecules. By use of the “dilute solution” treatment of Flory, the osmotic pressure excesses are related to the volumes and hence dimensions of the interact acting species. A comparison of these values with those calculated by other means shows good agreement. The osmotic behavior of the complex gels can be understood on a mechanistic basis, if we regard the gelatin and sulphated proteoglycans as spheres and the hyaluronate proteoglycan as a rod.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 0006-3525
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Light scattered from a macromolecular solution in a capillary tube is used to determine both the sedimentation and translational diffusion coefficients. The capillary tube is spun in a preparative centrifuge, removed, and placed in a light-scattering photometer equipped with a scanning mechanism. The intensity distribution of scattered light along the tube represents the concentration profile in the tube and provides the measure of boundary migration. The sedimentation coefficient is determined from this measure and the applied centrifugal field. The diffusion coefficient is obtained from a time-autocorrelation analysis of fluctuations in intensity of light scattered from any fixed point of the profile. These coefficients were obtained for two monodisperse systems, R17 bacteriophage and 28s ribosomal rat liver RNA. The molecular weights obtained from ratios of these coefficients are in good agreement with literature values. In the sedimentation analysis, deviations from linearity between boundary displacement and applied field were found to be less than 1%. This precision confirms that the boundary is stable for the capillary geometry even in the absence of a preformed density gradient. The sedimentation coefficients of identical samples were also measured with the Spinco Model E analytical ultracentrifuge; results of the two methods agree to within 4%.As a consequence of the capillary tube geometry and light-scattering detection, sedimentation coefficients can be obtained from sample volumes of less than 100 μl. This detection techniques is thus far demonstrated to be at least an order of magnitude more sensitive than Schlieren optics, thereby useful when uv absorption is not applicable. For diffusion measurements there are also several inherent advantages. The diffusion coefficient is obtained from the identical sample, and scanning provides the capability to measure D from various parts of the sedimentation profiles and thereby directly explore concentration dependence, homogeneity, and integrity of the sample. The capillary tube with a layer of silicone oil over the sample and centrifugation provides an effective method to cleanse the solution and trap all dust.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: D-Glucose, D-Galaktose, D-Mannose und 4.6-Benzal-α-D-glucose reagierten mit 2-Mercapto-äthylamin unter Bildung von Thiazolidin-Derivaten. Der Konstitutionsbeweis wurde durch Desulfurierung der Acetate mit Raney-Nickel erbracht, die zu den entsprechenden Hexitderivaten führte. Der Glucosederivat III entstehende I-[N-äthyl-acetamino]-2.3.4.5.6-penta-O-acetyl-1-desoxy-D-sorbit (IV) wurde auf einem unabhängigen Wege aus 1-äthylamino-1-desoxy-D-glucose erhalten.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 94 (1961), S. 3293-3297 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Synthese der genannten Anomeren erfolgte durch Benzylidierung und Glykosidierung des N-Formyl-D-glucosamins und alkalische Hydrolyse der N-Formyl-Gruppe.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 94 (1961), S. 1676-1682 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die katalytische Hydrierung der aromatisch kondensierten 1.4-Oxazinone-(2) (Azacumarine) führt zu ihren 3.4-Dihydroderivaten, den Morpholonen-(2), die auch als Lactone der entsprechenden N-[o-Hydroxyl-aryl]-α-aminosäuren beschrieben werden können. Hydrierung der 1.4-Benzoxazinone-(2) mit Lithiumaluminiumhydrid liefert unter Öffnung des Lactonringes N-substituierte 1.2-Aminoalkohole.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 95 (1962), S. 985-995 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Racem. Tetralin-p-chinol wird über die Strychninsalze der sauren 3-Nitro-phthal-säureester in die optischen Antipoden zerlegt. Die Konfiguration und Konformation der Antipoden wird diskutiert und zur Konfiguration und Konformation der östra-p-chinole auf Grund des optische Verschiebungssatzes und der Rotationsdispersion in Beziehung gesetzt. Daraus ergibt sich die absolute Konfiguration der Antipoden des Tetralin-p-chinols.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 95 (1962), S. 1000-1002 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Umsetzung von D-Glucose, D-Galaktose, D-Mannose und L-Arabinose mit 3-Mercapto-propylamin ergab Substituierte Tetrahydro-1.3-thiazine. Die konstitution der Verbindung aus D-Glucose wurde durch Raney-Nickel-Desulfurierung zu einem auf unabhängigem Wege erhaltenen D-Sorbit-Derivat bewiesen.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 96 (1963), S. 2017-2018 
    ISSN: 0009-2940
    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 ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...