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
  • Articles: DFG German National Licenses  (37)
  • Electronic Resource  (37)
  • 2000-2004  (13)
  • 1990-1994  (21)
  • 1940-1944  (1)
  • 1900-1904  (2)
Source
  • Articles: DFG German National Licenses  (37)
Material
  • Electronic Resource  (37)
Years
Year
Keywords
  • 31
    Electronic Resource
    Electronic Resource
    A novel resin-filled ion-sensitive micro-electrode suitable for intracellular measurements in isolated cardiac myocytes (1990)
    Springer
    Pflügers Archiv 416 (1990), S. 196-200 
    Details
    ISSN: 1432-2013
    Keywords: Myocyte ; Intracellular ions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A method for the manufacture of ion-sensitive micro-electrodes, which can be readily used with small single cells, is described in detail. A glass pipette with a tip size of 1 μm, essentially similar to those used as suction electrodes in whole-cell recording, when silanized and with its tip filled with a suitable ion-sensitive resin, producesan ion-sensitive electrode with fast electrical and chemical response times. These electrodes can be applied to the cell membrane of isolated myocytes and penetration achieved without cell damage, by the application of suction. For the estimation of intracellular ionic activities they can be used in conjunction with a separate conventional KCl-filled micro-electrode or a suction voltage electrode. The technique is illustrated by the measurement of intracellular Na+, Ca2+ and pH. It is possible that these electrodes can also be used to measure local changes in ionic activity in restricted areas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00370242
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 32
    Electronic Resource
    Electronic Resource
    The effect of oximes on the dihydropyridine-sensitive Ca current of isolated guinea-pig ventricular myocytes (1993)
    Springer
    Pflügers Archiv 422 (1993), S. 325-331 
    Details
    ISSN: 1432-2013
    Keywords: Myocyte ; Voltage clamp ; Ionic currents ; Oximes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Exposure of isolated guinea-pig ventricular myocytes to the uncharged oximes 2,3 butanedionemonoxine (BDM) and norPAM (but not by the charged PAM) results in a dose-dependent reduction of the duration of the action potential. The nifedipine-sensitive Ca current is fully inhibited by BDM (IC505.8±0.4 mM) and nor PAM but is little affected by PAM. This inhibition is unaltered by the presence of BAY K 8644 but is antagonized by isoprenaline. The effect of isoprenaline is more pronounced when the solution in the patch pipette contains the non-hydrolysable analogue of adenosine 5′-triphosphate, ATPγS (the IC50 is increased to 44.0±5.2 mM). A hastening of the inactivation of the L-type Ca current persists when either 10 mM 1,2-bis(2-aminophenoxy)-ethane-N, N, N′, N-tetraacetic acid (BAPTA) or 3 mM ATPγS is present in the pipette solution or when BAY K 8644 or isoprenaline are present in the bathing fluid. These results suggest that the inhibition of the Ca current is due to the phosphatase-like activity of the oximes but differs in some respects from previous work where a reduced level of phosphorylation is achieved by the introduction of protein kinase inhibitors or protein phosphatases into the sarcoplasm in guinea-pig myocytes. These differences could be explained if Ca channel availability is regulated by at least two sites of cAMP-dependent phosphorylation with oximes able to rapidly dephosphorylate both sites, while one of these sites is not readily dephosphorylated by the endogenous phosphatases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00374287
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 33
    Electronic Resource
    Electronic Resource
    Taste Sensitivity of Insect Herbivores to Deterrents is Greater in Specialists Than in Generalists: A Behavioral Test of the Hypothesis with Two Closely Related Caterpillars (2000)
    Springer
    Journal of chemical ecology 26 (2000), S. 547-563 
    Details
    ISSN: 1573-1561
    Keywords: Heliothis virescens ; Heliothis subflexa ; caterpillar ; diet breadth ; deterrent compound ; feeding behavior ; postingestive toxicity ; plant secondary metabolite
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Sensitivity of caterpillars of Heliothis virescens, a generalist, and H. subflexa, a specialist, to eight different plant secondary compounds was examined behaviorally. The compounds were nicotine hydrogen tartrate, hordenine, caffeine, sinigrin, linamarin, arbutin, chlorogenic acid, and salicin. All compounds deterred feeding, at least at the higher concentrations, but the generalist was less affected than the specialist. Thus the hypothesis that specialists have greater sensitivity to deterrents than generalists was supported. In most cases deterrence occurred on first encounter, indicating that the response was sensory; in some cases short-term postingestive effects also appeared to play a role. The larger quantities of deterrent-containing food ingested by H. virescens sometimes resulted in measurable postingestive effects during the second control test. This did not occur in H. subflexa, which more commonly rejected the deterrent-containing food on first contact. The contrast between the species is discussed in relation to tradeoffs involved in different diet breadths.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005430010314
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 34
    Electronic Resource
    Electronic Resource
    A system model for the ultrasonic inspection of smooth planar cracks (1990)
    Springer
    Journal of nondestructive evaluation 9 (1990), S. 197-210 
    Details
    ISSN: 1573-4862
    Keywords: Ultrasonic inspections ; theoretical modeling ; elastodynamic ; geometrical theory of diffraction ; Kirchhoff theory ; probe ; computer codes ; experimental validation ; defect detection ; power station plant
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Mathematics
    Notes: Abstract This paper describes a system model for the ultrasonic inspection of smooth planar cracks in ferritic steel, using pulse-echo probes. The model predicts the echo amplitudes and ranges as functions of the probe position. It is applied to problems of procedure design, assessment, and technical justification on power station plant. The model is implemented as a suite of versatile and user-friendly computer codes, suitable for use by practical NDT engineers, and is supported by a comprehensive user manual. The paper describes the principles of the model and gives examples of its application to power plant problems. Illustrations are also given of the extensive validation which the model has undergone through comparison with experiment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00566394
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 35
    Electronic Resource
    Electronic Resource
    Shape coexistence and strong shape changes in very neutron deficient platinum isotopes (1990)
    Springer
    The European physical journal 337 (1990), S. 283-292 
    Details
    ISSN: 1434-601X
    Keywords: 21.60.Ev ; 29.30.Kv ; 27.70.+q
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract High spin states of175, 176Pt have been populated in144Sm(35Cl,pxn) reactions at beam energies of 175–185 MeV. In-beamγ-ray spectroscopic techniques using the ESSA30 spectrometer array were adopted. Levels up to spin 26 in176Pt and tentatively up to spin 45/2 in175Pt have been identified. The data are interpreted within the framework of Cranked Shell Model calculations using the deformed Woods-Saxon potential and including monopole pairing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01289694
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 36
    Electronic Resource
    Electronic Resource
    High-spin states in neutron-rich Dy isotopes populated in deep-inelastic reactions (2001)
    Springer
    The European physical journal 10 (2001), S. 41-47 
    Details
    ISSN: 1434-601X
    Keywords: PACS. 23.20.Lv Gamma transitions and level energies – 27.70.+q 150 ?A? 189
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: High-spin states in neutron-rich Dy isotopes, populated in deep-inelastic processes produced by the interaction of 234 MeV 37Cl ions with a 160Gd target, have been studied using the highly sensitive EUROBALL IV gamma-ray detector array. The previously known level schemes for 159,160,161,162Dy have been extended to significantly higher spin ( ? 30?) and the i 13/2 band crossing in 159Dy has been observed for the first time. The experimental results are discussed within the framework of cranked shell model and projected shell model calculations with particular reference to the observed delayed band crossing in 162Dy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100500170142
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 37
    Electronic Resource
    Electronic Resource
    Miticide bioassays with spider mites (Acari: Tetranychidae): effect of test method, exposure period and mortality criterion on the precision of response estimates (1993)
    Springer
    Experimental and applied acarology 17 (1993), S. 695-708 
    Details
    ISSN: 1572-9702
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Six different bioassay methods were evaluated using propargite (Omite 30% wettable powder (WP) and fenbutatin oxide (Torque 50% (WP) and 55% suspension concentrate (SC)) with twospotted spider mite, Tetranychus uriticae Koch (TSM) and European red mite, Panonychus ulmi Koch (ERM) to document their utility and precision for estimating median lethal concentrations (LC). For each method, two post-treatment exposure periods and mortality criteria were used. Post-treatment exposure period and mortality criterion had a significant influence on the precision of LC50 estimates for all tested miticides with all bioassays methods. Twenty four hour (h) post-treatment exposure was found to be the most suitable for the slide dip and Petri dish methods while 48h was the most appropriate for leaf disc methods. Scoring moribund mites as dead was the most satisfactory criterion for ensuring that biossays were as simple and precise as possible. The Petri dish residue-Potter tower method (PDR-PT) estimated the responses of TSM and ERM to propargite with high precision. The same method was not as precise for fenbutatin oxide formulations. Because significant mite run-off occurred with the leaf disc methods, their precision was not fully established. The slide dip method gave less precise estimates of LC50 values for propargite (WP) and fenbutatin oxide (WP), while the same method gave more precise LC50 estimates for fenbutatin oxide (SC) than the PDR-PT method. The toxicity of candidate miticides was found to be method-and species-dependent.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00058509
    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...