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
    Novel approach to micro infrared sample preparation (1975)
    s.l. : American Chemical Society
    Analytical chemistry 47 (1975), S. 2482-2483 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac60364a033
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Schulz, James; Carrin, Guy; Krupp, Hans; Peschke, Manfred; Sclar, Elliott; Van Steenberge, J.: Providing Adequate Retirement Income: Pension Reform in the United States and Abroad : Hanover, New Hampshire, published for Brandeis University Press by the University Press of New England, 1975 (1976)
    Cambridge : Cambridge University Press
    Journal of social policy 5 (1976), S. 108-109 
    Details
    ISSN: 0047-2794
    Source: Cambridge Journals Digital Archives
    Topics: Political Science , Sociology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1017/S0047279400004682
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Greenough, William C.; King, Francis P.: Pension Plans and Public Policy : New York, Columbia University Press, 1976 (1979)
    Cambridge : Cambridge University Press
    Journal of social policy 8 (1979), S. 111-112 
    Details
    ISSN: 0047-2794
    Source: Cambridge Journals Digital Archives
    Topics: Political Science , Sociology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1017/S0047279400008436
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Evidence for denitrification in aerobic pelagic sediments (1978)
    [s.l.] : Nature Publishing Group
    Nature 274 (1978), S. 354-356 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Data on the dissolved oxygen and nitrogen content of pelagic sediments have hitherto not been available, although results from some near-shore environments have been reported4. There are considerable difficulties in sampling deep-sea sedimentary pore waters for dissolved gases and in analysing the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/274354a0
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Isolation and characterization of pteridines from heads of Drosophila melanogaster by a modified thin-layer chromatography procedure (1977)
    Springer
    Biochemical genetics 15 (1977), S. 307-319 
    Details
    ISSN: 1573-4927
    Keywords: pteridines ; Drosophila ; thin-layer chromatography ; eye pigments
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract An improved thin-layer chromatography technique is described for the separation of fluorescent compounds found in extracts of heads of Drosophila melanogaster. Eighteen to twenty fluorescent spots are resolved, two of which are xanthurenic acid and 3-hydroxykynurenine, and the remaining spots are presumably pteridines. Of these, nine have been identified and quantitated directly on the chromatograms with a fluorometer. One of the spots present on the chromatogram apparently has not been described previous to this work. Characteristics of this substance, termed “quench spot,” are presented, several of which indicate that it may be a pteridine or pteridine derivative.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00484462
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Mechanism of suppression in Drosophila. V. Localization of the purple mutant of Drosophila melanogaster in the pteridine biosynthetic pathway (1977)
    Springer
    Biochemical genetics 15 (1977), S. 321-332 
    Details
    ISSN: 1573-4927
    Keywords: pteridines ; Drosophila ; suppression ; eye color mutants ; GTP ; development
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The suppressible eye color mutant purple (pr) of Drosophila melanogaster is known to be unable to synthesize a wild-type complement of pteridine eye pigments. This study measures the reduced levels of drosopterins, sepiapterin, and an unidentified presumed pteridine in pr and pr bw. Pteridine analyses in double mutants combining pr with one of three other eye color mutants sepia, Henna-recessive3, and prune2, suggest that the metabolic block in pr occurs prior to sepiapterin biosynthesis. Measurements of GTP and GTP cyclohydrolase in pr showed wild-type levels and indicate the metabolic block in pr to be at one of the steps converting dihydroneopterin triphosphate to sepiapterin. Quantitation of pteridines in suppressed purple [su(s) 2; pr and pr; su(pr) e3] shows restoration of pteridines to wild-type or nearly wild-type levels.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00484463
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    ATP synthesis driven by a protonmotive force inStreptococcus lactis (1975)
    Springer
    The journal of membrane biology 25 (1975), S. 285-310 
    Details
    ISSN: 1432-1424
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Summary An electrochemical potential difference for hydrogen ions (a protonmotive force) was artificially imposed across the membrane of the anaerobic bacteriumStreptococcus lactis. When cells were exposed to the ionophore, valinomycin, the electrical gradient was established by a potassium diffusion potential. A chemical gradient of protons was established by manipulating the transmembrane pH gradient. When the protonmotive force attained a value of 215 mV or greater, net ATP synthesis was catalyzed by the membrane-bound Ca++, Mg++-stimulated ATPase. This was true whether the protonmotive force was dominated by the membrane potential (negative inside) or the pH gradient (alkaline inside). Under these conditions, ATP synthesis could be blocked by the ATPase inhibitor, dicyclohexylcarbodiimide, or by ionophores which rendered the membrane specifically permeable to protons. These observations provide strong evidence in support of the chemiosmotic hypothesis, which states that the membrane-bound ATPase couples the inward movement of protons to the synthesis of ATP.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01868580
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    A protonmotive force as the source of energy for galactoside transport in energy depletedEscherichia Coli (1977)
    Springer
    The journal of membrane biology 31 (1977), S. 233-255 
    Details
    ISSN: 1432-1424
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Summary An artificially produced electrochemical potential difference for protons (protonmotive force) provided the energy for the transport of galactosides inEscherichia coli cells which were depleted of their endogenous energy reserves. The driving force for the entry of protons was provided by either a transmembrane pH gradient or a membrane potential. The pH gradient across the membrane was created by acidifying the external medium. The membrane potential (inside negative) was established by the outward diffusion of potassium (in the presence of valinomycin) or by the inward diffusion of the permeant thiocyanate ion. The magnitude of the electrochemical potential difference for protons agreed well with magnitude of the chemical potential difference of the lactose analog, thiomethylgalactoside. The observations are consistent with the view that the carrier-mediated entry of each galactoside molecule is accompanied by the entry of one proton.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01869407
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Effect of lithium ion on melibiose transport inEscherichia coli (1978)
    Springer
    The journal of membrane biology 42 (1978), S. 45-59 
    Details
    ISSN: 1432-1424
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Summary Both Li+ and Na+ stimulated the uptake of thiomethylgalactoside by the melibiose transport system ofEscherichia coli. On the other hand, Li+ inhibited the growth of cells on melibiose as a sole source of carbon. This inhibition was specific for melibiose, and Li+ had no effect on growth of cells on glucose, galactose, lactose, or glycerol. The effect of the cation on melibiose transport was investigated in a mutant which cannot utilize glucose. After entry into this cell, melibiose is cleaved into glucose and galactose by α-galactosidase, and the resulting glucose is excreted. Since the entry step was found to be rate-limiting, glucose production could be taken as a measure of melibiose transport. Li+ inhibited the transport of melibiose, but not the induction of the melibiose operon nor the activity of α-galactosidase. Li+ was found to inhibit the entry ofp-nitrophenyl-α-d-galactoside, but notp-nitrophenyl-β-d-galactoside entry. Thus, the cation specificity for the melibiose membrane carrier varies with different transport substrates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01870393
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Avian encephalomalacia in Barbados, west Indies: A description of spontaneous field cases with feed analyses (1978)
    Springer
    Tropical animal health and production 10 (1978), S. 111-117 
    Details
    ISSN: 1573-7438
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Des anticorps précipitants contre la bluetongue ont été mis en évidence dans des échantillons de sérum de moutons et de chèvres recueillis sur des animaux abattus à l'abattoir de Bagdad. Sur 294 échantillons de sérum de moutons et 110 de chèvres examinés, 28 et 18 de ces échantillons se sont respectivement montrés précipitants. En outre l'examen d'échantillons de sérum de moutons recueillis dans des localités où existaient des cas cliniques pouvant faire soupçonner la bluetongue a montré la présence de sérums précipitants de la maladie dans 101 des 198 échantillons examinés. C'est là le premier report confirmant l'existence de la bluetongue en Irak.
    Abstract: Resumen Se detectaron anticuerpos precipitantes de la enfermedad de la Lengua Azul en el suero de ovejas y cabras beneficiadas en el matadero de Bagdad. La prueba fue positiva en 28 de 294 sueros ovinos y en 18 de los 110 sueros caprinos examinados. Posteriormente, se examinaron 198 sueros ovinos colectados en áreas en donde se sospechaba la existencia clínica de la enfermedad, encontrandose 101 positivos. Este es el primer informe de la existencia de Lengua Azul en Irak.
    Notes: Summary The clinical, necropsy and histopathological findings in four natural outbreaks of encephalomalacia are reported. Feed analyses implicated low levels of vitamin E as the probable cause of the condition. Treatment with vitamin E has proved to be very effective. The instability of vitamin E in animal feed ingredients during long periods of shipment into the Caribbean may be important in the pathogenesis of the disease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02235321
    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...