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
Filter
  • 1990-1994  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Short-term bromide uptake in skins of Rana pipiens (1994)
    Springer
    The journal of membrane biology 138 (1994), S. 171-179 
    Details
    ISSN: 1432-1424
    Keywords: Intracellular ions ; X-ray microanalysis ; Sodium ; Chloride ; Bromide ; Frog skin epithelium
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Intracellular ion concentrations were determined in split skins of Rana pipiens using the technique of electron microprobe analysis. Based on the 1 min Br uptake from the apical bath, two types of mitochondria-rich (MR) cells could be distinguished: active cells which rapidly exchanged their anions with the apical bath and inactive cells which did not. Br uptake and frequency of active MR cells were closely correlated with the skin conductance, g t. Replacing Cl in the apical bath with an impermeant anion significantly lowered g t and the Br uptake and Na concentration of active cells. Even larger reductions were observed after apical amiloride (0.1 mm). The inhibition of the Br uptake was reversible by voltage clamping (100 mV, inside positive). Cl removal and amiloride also led to some shrinkage of active cells. The results suggest that the active cell is responsible for a large part of g t. Inactive MR cells had much lower Br and Na concentrations which were not significantly affected by Cl removal, amiloride, or voltage clamping. Principal cells, which represent the main cell type of the epithelium, showed only a minimal Br uptake from the apical side which was not correlated with g t. Moreover, Cl removal had no effect on the Na, Br, and Cl concentrations of principal cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00232645
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    EFFECTS OF MULTIPLE ADMINISTRATIONS OF THE MMPI FOR EMPLOYEE SCREENING (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Personnel psychology 47 (1994), S. 0 
    Details
    ISSN: 1744-6570
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Psychology
    Notes: Psychological screening has become commonplace in a number of occupational groups. With the growing popularity of screening and the relative scarcity of appropriate personality measures, re-screening individuals with the same inventory is frequent. This paper examines the effect of re-screening with the Minnesota Multiphasic Personality Inventory (MMPI) on contract workers (n = 1,997) from the nuclear power industry. Participants completed the Inventory as a part of a routine screening procedure. Each participant provided several profiles as a result of regular employment cycles. Although the differences are generally small, some scales show large enough mean changes to warrant concern when interpreting the profiles of those who have taken the profile multiple times. Although scale reliabilities tend to increase, the usefulness of the Inventory appears to decrease with an increasing number of administrations. The effect is one of increasing normality of test profiles. One interpretation of the results is that candidates for jobs become “test-wise,” and the scores are the result of a combination of responses to the repeated assessment. It becomes increasingly difficult to identify unfit employees with the Inventory. Given these results, further research on retesting effects of the Inventov, as well as other personality measures, is indicated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1744-6570.1994.tb01738.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    (1,3)-β-Glucan synthase fromSaccharomyces cerevisiae: In vitro activation byβ-lactoglobulin or Brij-35, and photoaffinity labeling of enriched microsomal fractions with 5-azido-UDP-Glc and 8-azido-GTP (1992)
    Springer
    Current microbiology 24 (1992), S. 295-300 
    Details
    ISSN: 1432-0991
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Two new activators of (1,3)-β-glucan synthase fromSaccharomyces cerevisiae were identified, and a procedure for preparing enriched enzyme fractions by removal of peripheral membrane proteins and entrapped soluble proteins was developed. Microsomal enzyme activity, known to be enhanced by bovine serum albumin (BSA), was stimulated threefold by both β-lactoglobulin and Brij-35. Both apparently substituted for BSA, since no synergistic effects were observed with activators added in combination. Successive washings of microsomal fractions with the detergents Brij-35 and Tergitol NP-40 to remove peripheral and vesicle-entrapped proteins yielded particulate fractions five-fold enriched in glucan synthase activity. GTP, an important effector of glucan synthase, improved purification of the enzyme during detergent extractions. Various membrane fractions were photolabeled with 5[32P]N3UDP-Glc or 8N3[32P]GTP, and potential UDP-Glc and GTP-binding polypeptides were identified. However, further enrichment will be required to determine which of these might represent subunits of the yeast glucan synthase complex.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01577336
    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...