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
Filter
  • 1975-1979  (4)
  • 1970-1974  (4)
  • Analytical Chemistry and Spectroscopy  (5)
  • Electroconvulsive shock  (2)
  • Oral
  • 1
    ISSN: 1432-2072
    Keywords: Electroconvulsive shock ; Electronvulsive therapy ; 5-Hydroxytryptamine ; Behaviour
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Treatment of rats with one electroconvulsive shock (ECS) per day for 10 days enhanced the hyperactivity syndrome produced by administration of tranylcypromine (10 mg kg-1) and l-tryptophan (50 mg kg-1) given 24 h after the final shock. Similar enhancement was seen whether the shock was alternating sinusoidal or direct current (fractionated), whether it was given through unilaterally or bilaterally placed electrodes and whether or not a neuromuscular blocking agent (fazadinium) was used. Five shocks spread over 10 days or 8 shocks spread over 17 days were similarly effective, whilst 8 shocks in 1 day were ineffective. Therefore when ECS are given to rats in ways similar to those in which electroconvulsive therapy is given to patients with depression, enhancement of behavioural responses to increased 5-HT function is produced.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Calcified tissue international 6 (1970), S. 301-315 
    ISSN: 1432-0827
    Keywords: Calcium ; Absorption ; Radioisotopes ; Oral ; Intravenous
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Description / Table of Contents: Résumé Les équations dérivées pour mesurer les vitesses de déplacement du calcium au niveau de l'intestin et du sang ont été appliquées à des résultats obtanus chez 23 sujets. Chaque sujet a reçu 5 μ Ci45Ca par injection intra-veineuse et 20 μ Ci47Ca per os. Les activités spécifiques du plasma, de l'urine et des fèces ont été mesurées et l'absorption et les vitesses de déplacement endogène du calcium ont été déterminées, en utilisant les deux méthodes décrites antérieurement. Les mesures basées sur les calculs du contenu des fèces en ces deux isotopes, sont plus satisfaisantes que les calculs réalisés sur le plasma. Les mesures réaliséez chez des sujets, ayant été soumis à la chirurgie gastrique, donnent certaines informations concernant les régions d'absorption du calcium.
    Abstract: Zusammenfassung Die abgeleiteten Gleichungen zur Messung der Calciumdurchflußgeschwindigkeiten in Darm und Blut kamen zur Anwendung bei der Aufarbeitung von Daten, die für 23 Personen zusammengestellt wurden. Jede Versuchsperson erhielt 5 μC45Ca i. v. und 20 μC47Ca p. o. Die spezifischen Aktivitäten von Plasma, Urin und Faeces wurden dann gemessen und daraus die Absorption sowie die endogene Calciumdurchflußgeschwindigkeit ermittelt, wozu beide in einer früheren Publikation beschriebenen Methoden benützt wurden. Die auf den Integralberechnungen der fäkalen spezifischen Aktivitäten basierenden Messungen der beiden Tracer ergaben ein befriedigenderes Resultat als jene, die auf den spezifischen Aktivitäten des Plasmas beruhten. Die Messungen an Magen-Darm-Operierten ergaben einige Hinweise auf die Lokalisation der Calciumabsorption.
    Notes: Abstract The equations derived to measure the calcium flow rates in the gut and blood have been applied to data gathered from 23 subjects. Each subject was given 5 μCi45Ca by intravenous injection and 20 μCi47Ca orally. The specific activities of plasma, urine and faeces were then measured and the absorption and calcium endogenous flow rates found, using both methods described in a previous publication. The measurements based on the calculations of the faecal occupancies, of the two tracers were found to be more satisfactory than the calculations based on plasma occupancy. The measurements on subjects who had gastric surgery gave some information on the site of calcium absorption.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    ISSN: 1432-2072
    Keywords: Electroconvulsive shock ; 5-Hydroxytryptamine ; Dopamine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Following repeated electroconvulsive shocks (ECS) (once daily for 10 days), rats display enhanced hyperactivity responses to tranylcypromine and l-tryptophan, a procedure which increases brain 5-hydroxytryptamine (5-HT) concentrations, or to the suggested 5-HT agonist quipazine. The enhanced responses last for about 6 days following the last shock. Repeated sub-convulsive shocks did not produce this behavioural enhancement. Administration of indomethacin (2 mg/kg) 25 min before the ECS did not prevent the enhanced 5-HT response suggesting that the enhanced response is not the result of the reported rise in prostaglandins F following ECS. Repeated ECS shortened the time to loss of righting following pentobarbital (50 mg/kg) but did not alter the total sleeping time. Repeated ECS enhances locomotor activity produced by methamphetamine. It also enhances circling produced by methamphetamine and apomorphine in unilateral nigrostriatal lesioned rats, suggesting an enhanced postsynaptic response. No evidence was found for ECS altering the response of striatal adenylate cyclase to dopamine nor for any alteration of striatal cyclic AMP concentration. These data taken with our previous study reinforce the suggestion that electroconvulsive therapy (ECT) produces increased responses to 5-hydroxytryptamine and dopamine receptor stimulation.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 3 (1974), S. 149-150 
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Twenty-five new measurements of Kβ/Kα X-ray intensity ratios for elements in the atomic number range 20 to 30 confirm other recent evidence that the variation with atomic number in this region is much less than previously thought, but there is still some disagreement for atomic numbers above 27. A table of recommended values is given.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: High resolution mass spectral fragmentation patterns of Amaryllidaceae alkaloids in the crinine series have been investigated as well as those of certain isotopically labeled derivatives. Attention is directed to the particular importance of employing entire high resolution mass spectra in attempting the elucidation of structural correlations in compounds which display few significant relative intensity variations in a complex fragmentation pattern.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Data on defocused metastable ions have been obtained for a series of structurally significant fragment ions in the mass spectra of the estrogenic steroid, estrone methyl ether and the alkaloid tropine. These data, in conjunction with measurements on defocused metastable ions in the mass spectra of isotopically labeled analogs and complete high resolution mass spectra provide important insights into the details of fragmentation processes, specifically: (a) an enumeration and determination of the frequent multiple origins of fragment ions in the mass spectra of such complex molecules, (b) specification of skeletal atoms lost and retained in concerted (one step) processes, and at each step of stepwise processes, leading to a particular fragment ion and (c) information on the relative contributions of concerted and stepwise processes resulting in the genesis of a given ion.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 4 (1975), S. 65-70 
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: A technique is outlined which use the electron microprobe to obtain X-ray absorption spectra, by photon absorption, in the long wavelength region. Spectra are presented for SiO, SiO2, rectorite, talc, vermiculite, V2O5, Cr2O3, Fe2O3, maghemite, Mylar and collodion. For all compounds the main absorption edge is near to 536 eV, which is significantly higher than core binding measured in ESCA studies. The transition metal oxides and organic films show a sharp absorption line near 531 eV in addition to the above edge. This absorption line is very close in energy to the anomalous peak observed in the oxygen K emission spectra when using KAP or other acid phthalate crystals and it seems likely that the two phenomena are associated.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Computer fitting techniques have been used to derive a new expression for the relationship between X-ray continuum intensity and atomic number for a range of electron acelerating potentials up to 25 kV, continuum energies up to 10 keV and average atomic numbers up to thirty. A practical approach to background corrections in energy dispersive electron microprobe analysis, which utilizes this expression, is outlined. The procedure should lead to significant improvements in both accuracy and detection limits in this method of X-ray analysis.
    Additional Material: 6 Ill.
    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...