21. |
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22. |
- Ahlberg, Mats, et al.
(author)
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Proton-Induced X-Ray Emission in the Trace Analysis of Human Tooth Enamel and Dentine
- 1976
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In: International Journal of Applied Radiation and Isotopes. ; 27:5-6, s. 279-290
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Journal article (peer-reviewed)abstract
- In this study the feasibility of applying proton-induced X-ray emission spectroscopy (PIXE) to the trace element analysis of human tooth enamel and dentine is investigated. Detection limits on the order of 1–10 ppm are obtained. Depth yields for different elements and proton energies are discussed. Enhancement calculations show that the effect for PIXE analysis is less important than for X-ray induced X-ray analysis. However, for elements with an absorption edge just below an intense X-ray line from a major element the enhancement effect is significant, and, due to the 40% calcium in the enamel matrix, it is estimated to be 15% for potassium. The importance of a smooth sample surface is discussed.
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23. |
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24. |
- Ahlenius, Sven, et al.
(author)
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Prolongation of the ejaculation latency in the male rat by thioridazine and chlorimipramine.
- 1979
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In: Psychopharmacology. - 0033-3158 .- 1432-2072. ; 65:2, s. 137-140
-
Journal article (peer-reviewed)abstract
- Thioridazine (3 mg/kg) and chlorimipramine (1.5–6.0 mg/kg) prolonged the ejaculation latency and increased the number of mounts but did not change the number of intromissions preceding ejaculation. Blockade of peripheral and central noradrenaline receptors by phentolamine and phenoxybenzamine respectively resulted in a suppression of all aspects of the sexual behavior with increasing doses. dl-5-HTP (25–100 mg/kg) in combination with an inhibitor of peripheral 5-HTP decarboxylase (benserazide, 25 mg/kg) produced, like chlorimipramine and thioridazine, a prolongation of ejaculation latency and an increase in the number of mounts preceding ejaculation. Selective inhibition of 5-HT reuptake however, by zimelidine (0–20 mg/kg) or alaproclate (0–20 mg/kg) did not affect the mating behavior. At higher doses of these drugs some animals failed to initiate sexual activities. There was an increase in the postejaculatory interval but no change in the ejaculatory latency.It is concluded that the prolonged ejaculation latencies observed following treatment with thioridazine or chlorimipramine is not due to a blockade of central or peripheral adrenergic -receptors.
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25. |
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26. |
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27. |
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28. |
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29. |
- Ahmad, SI, et al.
(author)
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Catalysis in micellar and liquid crystalline phases
- 1973
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In: Chemie, Physikalische Chemie und Anwendungstechnik der Grenzflächenaktiven Stoffe. - Munchen : Carl Hanser Verlag GmbH. ; , s. 917-924
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Conference paper (peer-reviewed)
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30. |
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