Library

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
    Sequential pathological studies in the udder of goats intramammarily infected withAspergillus fumigatus (1994)
    Springer
    Mycopathologia 126 (1994), S. 9-14 
    Details
    ISSN: 1573-0832
    Keywords: Aspergillosis ; Goats ; Pathology ; Udder
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Intramammary inoculation of goats withAspergillus fumigatus spores resulted in the development of mastitis with characteristic gross and microscopic lesions. The mastitis and the lesions were restricted to the infected udder halves only and there was no dissemination of infection to other tissues of the body. The experiment was continued for 45 days. Gross changes in the infected udder were observed up to the 45th day post-infection. The lesions, in general, included variable sized abscesses in the first 15 days followed by development of varying sized greyish-white nodules in the infected udders. Microscopic changes consisted of granulomatous reaction with well developed granulomas in the infected udders. Hyphae and spores ofAspergillus fumigatus could be demonstrated in sections of the infected udders up to 45 days after infection. Reisolation of the fungus consistently was achieved up to 45 days. It is concluded that intramammary inoculation ofAspergillus fumigatus spores in goats leads to chronic granulomatous mastitis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01371167
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Reactions of carbonate radical with cobalt(II) aminopolycarboxylates (1992)
    Springer
    Journal of radioanalytical and nuclear chemistry 166 (1992), S. 87-96 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Reactions of carbonate (CO 3 −· ) and bicarbonate (HCO 3 · ) radicals generated by photolysis of a carbonate or bicarbonate solution at pH 11.2 and 8.5, respectively, with Co(II) complexes of iminodiacetic acid (IDA) and ethylenediaminetetraacetic acid (EDTA) have been studied. The rate constants for the reactions were in the order of 106–107 dm3mol−1s−1. From the time-resolved spectroscopy of the products formed after reaction of CO 3· −· or HCO 3 · , it is observed that CO 3 −· or HCO 3 · oxidize the metal center to its higher oxidation state.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02169575
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Absorption and fluorescence behavior of cytosine irradiated at different pH and in the presence of Cu(II) ions at neutral pH (1994)
    Springer
    Journal of radioanalytical and nuclear chemistry 188 (1994), S. 133-148 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Dilute aqueous solutions of cytosine were irradiated with60Co γ-rays under N2O saturated conditions at different pH and in the presence of Cu(II) ions at neutral pH. The base degradation decreased from neutral to acidic and basic conditions. In the presence of metal ions at neutral pH conditions there was a significant increase in the base degradation compared to that in the absence of metal ions under similar conditions. From the difference absorption spectra and fluorescence behavior of the irradiated solutions it was observed that the major radiolytic products of cytosine under different conditions are cytosine glycols, 5-hydroxycytosine, hydroxy-hydrocytosine and cytosine dimers. The yields of dimers is maximum in neutral conditions and it decreased from basic to acidic conditions. However, in the presence of Cu(II) ions formation of cytosine dimers is completely restricted and there is an increase in the yields of cytosine glycol, hydroxy-hydrocytosine and 5-hydroxycytosine. From the post-radiolytic changes in absorption and fluorescence behavior of irradiated solutions, it is revealed that some of the radiolytic products, namely cytosine glycol and hydroxy-hydrocytosine decompose to 5-hydroxycytosine and cytosine, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02164947
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Radiosensitization of thymine by Fe(III)-1,2 dihydroxyanthraquinone complex in dilute aqueous solution (1995)
    Springer
    Journal of radioanalytical and nuclear chemistry 196 (1995), S. 57-63 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract A complex of Fe(III) with 1,2 dihydroxy 9, 10, anthraquinone (DHA) has been prepared. The metal ion forms a 1∶3 complex with DHA. The complex is formed due to the dissociation of one proton per ligand bound to the metal ion. The stability constant of the Fe(III) complex is 1.61·1032. The complex reduces the catalytic flow of electrons from NADH to molecular O2 through NADH dehydrogenase over DHA. The Fe(III) compelx is seen to be an efficient radiosensitizer towards γ-radiation induced degradation of thymine in a nitrous oxide saturated medium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02036289
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Oxidation of Cu(II) aminopolycarboxylates by carbonate radical: A flash photolysis study (1999)
    Springer
    Journal of radioanalytical and nuclear chemistry 241 (1999), S. 553-560 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Reactions of carbonate radical (Co3 −) generated by photolysis or by radiolysis of a carbonate solution, with Cu(II) complexes of aminopolycarboxylic acids viz., Cu(II)ethylenediamine tetraacetate [CuIIEDTA]2− and Cu(II)-iminodiacetate [CuIIIDA] were studied at pH 10. 5 and ionic strength 0.2 mol·dm−3. Time-resolved spectroscopy and kinetics for the transients were studied using flash photolysis and stable products arising from the ligand degradation of the complex were ascertained by steady-state radiolysis experiments. From the kinetic data it is observed that CO3 −, radical reacts initially with CuII-complex to form a transient intermediate having maximum absorption at 335 nm and 430 nm. From the subsequent reactions of this intermediate it was assigned to be CuIII. species. This Cu(III) species undergoes intermolecular electron transfer with the CuII-complex to give a radical intermediate which again slowly reacts with CuII-complex to give a long lived species containing Cu−C bond. This long lived species, however, slowly decomposed to give glyoxalic reaction between CuIII-complex and a suitable donor, the one electron reduction potential for [CuIIIEDTA]1−/[CuIIEDTA]2− and [CuIIIIDA]+1/CuIIIDA was determined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02347212
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Photo-induced oxidation of aqueous solution of Na2[Mo(V)2O4EDTA] in neutral KBr and K2S2O8 medium (1996)
    Springer
    Journal of radioanalytical and nuclear chemistry 204 (1996), S. 349-361 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract When an aqueous solution of Na2[Mo(V)2O4EDTA] (ethylene diamine tetraacetate) was photolyzed in the presence of excess KBr and K2S2O8 at neutral pH, the complex was found to be oxidized due to the reactions of Br 2 −. and SO 4 −. , respectively. Oxidation of the complex was also observed due to the reactions of the complex with radiolytically generated Br 2 −. and SO 4 −. radicals. When the oxidation of the complex with SO 4 −. was conducted in an unbuffered solution, a chain reaction was observed in the oxidation of the complex. The time resolved kinetics for the formation and decay of different transient intermediates and the relevant rate constants were investigated with a flash photolysis technique, and a probable mechanism for the oxidation process was given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02060324
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    One electron oxidation of Ni(II)-iminodiacetate by carbonate radical (1995)
    Springer
    Journal of radioanalytical and nuclear chemistry 191 (1995), S. 349-359 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Reactions of carbonate radical (CO3 −), generated by photolysis or by radiolysis of a carbonate solution with nickel(II)-iminodiacetate (Ni(II)IDA) were studied at pH 10.5 and ionic strength (I)==0.2 mol·dm−3. The stable product arising from the ligand degradation in the complex is mainly glyxalic acid. Time-resolved spectroscopy and transient kinetics were studied using flash photolysis. From the kinetic data it was suggested that the carbonate radical initially reacts with Ni(III)IDA with a rate constant (2.4±0.4)·106 dm3·mol−1·s−1 to form a Ni(II)IDA species which, however, undergoes a first-order transformation (k=2.7·102·s−1) to give a radical intermediate of the type Ni(II)RNHCHCO 2 − ) which rapidly forms an adduct containing a Ni−C bond. This adduct decays very slowly to give rise to glyoxalic acid. From a consideration of equilibrium between Ni(II)IDA and Ni(III)IDA, the one electron reduction potential for the Ni(III)IDA/Ni(II)IDA couple was determined to be 1.467 V.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02038231
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Reactions of hydroxyalkyl radicals with nickel(II) and copper (II) complexes of 2-methyl-5-nitro-1H-imidazole-1-ethanol: A steady-state gamma-radiolysis and flash photolysis study (1995)
    Springer
    Journal of radioanalytical and nuclear chemistry 191 (1995), S. 337-348 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The yields for the loss of chromophore of Ni(II) and Cu(II) complexes of metronidazole,G(-Ni(II)M) andG(-Cu(II)M), reached almost zero when their aqueous solutions were γ-irradiated in the presence, of 0.4 mol·dm−3 of MeOH, EtOH,i-PrOH andt-BuOH in aerated medium. However, under N2O saturated conditions, these yields attained limiting values which suggests that the hydroxyalkyl radicals, derived from the alcohols by reaction with OH, react with the complexes in deaerated medium. But in aerated medium they react preferentially with O2. The rate constants for the reactions of the different hydroxyalkyl radicals with the complexes have been determined by the flash photolysis technique and the plausible mechanisms for the reactions have been suggested.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02038230
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Carbonate radical induced polymerisation of pyrrole: A steady state and flash photolysis study (1998)
    Springer
    Journal of radioanalytical and nuclear chemistry 230 (1998), S. 91-95 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Conventionally polymerisation of pyrrole is carried out either by chemical or electrochemical oxidation. In the present study polymerisation of pyrrole was carried out in a novel way in order to investigate the kinetics of the reactions involved. Carbonate radical (CO3 −) generated either radiolytically or photolytically from a sodium carbonate solution, was employed as the oxidant for the polymerisation reaction Flash photolysis and steady state ψ-radiolysis of pyrrole solution containing sodium carbonate was used for generating different intermediate and stable polymeric species. The kinetics of the formation and decay of different intermediate species were studied using UV-VIS spectrophotometry and the disappearances of the monomer was ascertained using HPLC. After analysing the species and steps involved a plausible mechanism for the polymerisation of pyrrole is suggested.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02387452
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Sequential pathological studies in goats infected intratracheally withAspergillus fumigatus (1993)
    Springer
    Mycopathologia 121 (1993), S. 77-81 
    Details
    ISSN: 1573-0832
    Keywords: Aspergillosis ; Goats ; Pathology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Intratracheal inoculation of goats withAspergillus fumigatus spores resulted in the development of characteristic gross and microscopic lesions. The lesions were restricted to lungs and there was no dissemination of infection to other tissues of the body except liver in one goat 16 days after infection. The experiment was continued for 37 days. Gross changes in lungs were observed up to the 24th day post-infection. The lesions, in general, included congestion and oedema in the first 6 days followed by the development of varying greyish-white nodules in the lungs. Microscopic changes consisted of granulomatous reaction with well developed granulomas in lungs. Hyphae and conidiophores with fruiting bodies ofAspergillus fumigatus could be demonstrated in sections up to 24 days of infection. Reisolation of the fungus consistently was achieved up to 24 days. It is concluded that intratracheal inoculation ofAspergillus fumigatus spores in goats leads to pulmonary aspergillosis up to 24 days.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01103574
    Library Location Call Number Volume/Issue/Year 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...