Library

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
    s.l. : American Chemical Society
    Inorganic chemistry 5 (1966), S. 1416-1419 
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 119 (1994), S. 0 
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract Five different c-type cytochromes have been detected during anaerobic growth of various Escherichia coli strains in different media. None of these cytochromes was detectable in aerobically-grown cultures. Only a single, 43 kDa cytochrome was synthesized in response to the presence of trimethylamine-N-oxide: synthesis of this cytochrome was unaffected by the presence of nitrate or nitrite, was repressed by oxygen, but was dependent upon a funtional tor operon located at minute 22 (coordinate 1070 kb) on the E. coli chromosome. The other four cytochromes, masses 16, 18, 24 and 50 kDa, were induced by nitrite coordinately with formate-dependent nitrite reductase activity, but repressed by oxygen and nitrate. As only the 18 kDa and 50 kDa cytochromes are encoded by the nrf operon located at minute 92 (coordinate 4366 kb), there must be other loci, possibly essential for formate-dependent nitrite reduction, encoding the 16 kDa and 24 kDa cytochromes. No other c-type cytochrome was detected under any growth condition tested.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Annals of hematology 73 (1996), S. 283-290 
    ISSN: 1432-0584
    Keywords: Key words Thrombophilia ; DVT ; Protein C deficiency ; Protein S deficiency ; Fibrinolysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  One hundred and thirty unrelated patients with recurrent deep venous thrombosis were studied over a period of 4 years (1986–1990) in order to determine the possible etiology. Protein C levels were estimated in plasma both by chromogenic substrate assay and by immunoassay. Protein S levels in plasma was determined by immunoassay using antisera to human protein S. Antithrombin III (AT-III) was assayed using monospecific rabbit antiserum to human AT-III. Fifteen patients were found to have hereditary protein C deficiency (11.52%). Family studies revealed autosomal recessive inheritance in one patient and a dominant pattern in the remaining 14 patients. Protein S deficiency was found in eight cases (6.1%), AT-III deficiency was established in five cases (3.8%) and a fibrinolytic defect in 33 cases (25.4%). Thrombosis of visceral and cerebral vessels and a positive family history were more frequently found among patients who had hereditary deficiency of one or the other antithrombotic factor. Thrombophlebitis of superficial veins was found to be very common in patients with protein C and protein S deficiency and virtually absent in AT-III deficiency. The high frequency of protein C and protein S deficiency in this ethnic group is attributed to the high frequency of consanguinity.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Archives of microbiology 154 (1990), S. 504-509 
    ISSN: 1432-072X
    Keywords: Streptomyces niveus ; Plasmid pSN2 ; Plasmid instability ; In vivo deletions ; Broad host range
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A plasmid designated pSN2 (molecular size 32.0 kb) was isolated from the wild type of Streptomyces niveus ATCC 19793. To permit phenotypic identification of pSN2 the 1.9 kb BclI fragment was replaced in vitro by the 1.1 kb BclI fragment of pIJ702 carrying the thiostrepton resistance (tsr) gene to form the plasmid pSN3. pSN3 transforms S. lividans to thiostrepton resistance at high frequency and is stably maintained. However, when used to transform S. niveus pSN3 was unstable and produced a 5.5 kb thiostrepton resistant deletion derivative pLG5. pLG5 is also stable and expresses thiostrepton resistance in S. lividans but on transformation of S. niveus was unstable and produced a further thiostrepton resistant derivative, pLG10, of 6.5 kb. pLG5 and pLG10 like pSN3 transform S. lividans at high frequency and produce pocks. DNA hybridizations with a probe derived from pLG5 confirm that pLG5 is derived from DNA sequences present on pSN2 and pSN3.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Journal of materials science 12 (1993), S. 1539-1540 
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Springer
    World journal of microbiology and biotechnology 2 (1986), S. 319-326 
    ISSN: 1573-0972
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Description / Table of Contents: Résumé Deux antibiotiques de type macrolide ont été décelés dans le bouillon de culture d'un actinomycète (souche 69B200). Cette souche présente une forte résistance à l'érythromycine, mais est sensible aux antibiotiques n'appartenant pas au groupe des macrolides. L'antibiotique purifié à partir des cultures développées à 25°C (composé I) est actif à l'égard deEscherichia coli; le composé II, produit à 35°C, agit surStaphylococcus aureus. Les poids moléculaires des composées I et II, déterminés par spectrographie de masse, sont respectivement de 293 et 307 daltons. Les spectres u.v. des deux composés présentent des pics à 225 et 275 nm. L'analyse dans l'i.r. révèle la présence de groupements hydroxyle et carbonyle dans les deux substances et un groupement lactone a été détecté dans le composé II. Le spectre RMH-H montre la présence de groupements méthyle dans les deux substances. D'autre part, chacune d'elles contient un sucre aminé. Les propriétés physico-chimiques de ces composés ne correspondent à celles d'aucun antibiotique macrolide antérieurement connu.
    Abstract: Resumen Dos antibióticos de tipo macrólido fueron detectados en el caldo de fermentación de un actinomicete (aislado 69B200) cuando éste crecía tanto a 25°C como a 35°C. Esta cepa era muy resistente a la eritromicina siendo, sin embargo, sensible a antibióticos no macrólidos. El antibiótico purificado, a partir de cultivos que crecían a 25°C (compuesto I), mostró actividad contraE. coli. El compuesto II, producido a 35°C, era activo contraS. aureus. Los pesos moleculares, determinados mediante espectrometría de masas, de los compuestos I y II fueron, respectivamente, 293 y 307. Ambos compuestos mostraron picos en el espectro u.v. a 225 y 275 m. Los análisis mediante i.r. mostraron la presencia de grupos hidroxilo y carbonilo en ambos compuestos y de un grupo lactona en el compuesto II. El espectro RMN-‘H’ indicó la existencia de grupos metilo en ambos compuestos. En los dos compuestos hay un azúcar aminado. Las propeidades físico-químicas de ambos compuestos no se corresponden con las de ningún otro antibiótico macrólido conocido hasta el momento.
    Notes: Summary Two macrolide-like antibiotics were detected in the fermentation broth of an actinomycete (isolate 69B200) when grown either at 25 or 35°C. This strain showed high resistance to erythromycin, but was sensitive to non-macrolide antibiotics. The purified antibiotic from cultures grown at 25°C (compound I) showed activity againstEscherichia coli: compound II, produced at 35°C, was active againstStaphylococcus aureus. The molecular weights, determined by mass spectrometry, of compounds I and II are 293 and 307, respectively. Both compounds showed peaks in the u.v. spectra at 225 and 275 nm. Infra-red analysis indicated the presence of hydroxyl and carbonyl groups in both compounds: a lactone group was detected in compound II. The ‘H’-NMR spectrum demonstrated the presence of methyl groups in both compounds. Amino sugar is present in both compounds. The physico-chemical properties of the compounds do not correspond to those of any of the known macrolide antibiotics.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Changes in the orientation of crystal axes of Al-0.8 wt% Si single crystals in the presence of two different particle sizes and inter-particle spacings were investigated during uniaxial compression. The orientation of crystal axes before and after deformation was precisely determined by the diffractometer method in the unit triangle of the stereographic projection. The reorientation of the compression axes after deformation was found to be influenced by particle size and initial orientation of the undeformed crystals. It was found that particle size also influenced the yield strength and work-hardening characteristics which was explained on the basis of Orowan stresses and solid-solution strengthening.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Changes in the lattice parameter of martensite phase in a maraging steel is measured as a function of ageing temperatures. A decrease in the lattice parameter is observed when aged between 400–650°C which is attributed to the depletion of alloying elements in the martensite matrix as a consequence of precipitation and austenite formation. An increase in the lattice from 650 to 710°C was characteristic of enrichment of alloying elements in the martensite matrix due to dissolution of austenite phase. A minimum value of the lattice parameter of martensite is observed at 650 °C which coincides with the maximum vol % of retained austenite. Electrical resistivity, hardness measurements, andin situ high temperature dilatometry was also carried out to delineate various precipitation reactions that occur in this steel.[/p]
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...