1,864 research outputs found
A proposal for integrated development of the water area\ud of the Brežice HPP\ud
No full textThe paper discusses an integrated development scheme of the future HPP Brežice reservoir area.\ud
The primary goal of the development is to establish a gravel pit, which would furnish material for\ud
the construction of the Lower Sava HPP chain, as the gravel found in the area is well suited for\ud
concrete manufacture and embankment construction. Later, the gravel pit could be redeveloped and\ud
filled with water to be used as an additional reservoir to the HPP Brežice reservoir, which would\ud
significantly improve the siting of the plant by using the area for tourist and recreational purposes.\ud
These include the creation of a kayaking trail and the development of forested peninsulas, walking\ud
trails, wetlands and other tourist and recreational sites. Besides the development scheme proposal,\ud
the study includes estimates on the volume of material extracted from the gravel pit, flow regime in\ud
the reservoir during extreme weather changes, and different hydraulic solutions of flow control,\ud
along with the calculations. During the construction of the Lower Sava HPP chain, the problem of\ud
migration of aquatic organisms impeded by the dams became evident. Fishways are a feasible\ud
solution; however, in Slovenia they are still not properly implemented, and they also mean power\ud
loss for the HPPs. The paper represents an alternative solution of the fish passage as par
Le istituzioni italiane per la storia della scienza
No full textIl testo propone un ampio panorama delle istituzioni italiane che, nel corso del Novecento, hanno promosso gli studi di storia della scienza. Particolare attenzione è rivolta all'attività della Domus Galilaeana di Pisa, all'Istituto e Museo di Storia della Scienza di Firenze, al Seminario di Storia della Scienza dell'Università di Bari
Modification of cell cycle and viability of TLX5 lymphoma in vitro by sulphoxide-ruthenium compounds and cisplatin detected by flow cytometry
No full textCHEM. BIOL. - INTERACT
Antiinflammatory action of hydrosoluble dimethyltriazenes on the carrageenin-induced edema in guinea pigs
No full textThe antiinflammatory activity of three hydrosoluble aryldimethyltriazenes has been examined on the carrageenin induced edema in guinea pig. The administration of equitoxic dosages of p-(3,3-dimethyl-1-triazeno)benzoic acid potassium salt (DM-COOK) and p-(3,3-dimethyl-1-triazeno)sulfonic acid sodium salt (DM-SO3Na) 1 h after carrageenin application, causes 4 h later a similar and statistically significant reduction of paw swelling by about 40% whereas, p-alanylphenyl-3,3-dimethyl-1-triazeno (DM-ALA(OH)) is inactive. Of the two active compounds, DM-COOK displays interesting properties, being rapidly active and causing a peak of inhibition higher than that caused by DM-SO3Na. The antiinflammatory activity of DM-COOK is comparable with that caused by 5 mg/kg indomethacin and 200 mg/kg phenylbutazone. However, DM-COOK, unlike indomethacin, causes an inhibition of leukocyte migration into the peritoneal cavity induced by casein treatment, thus indicating a different mechanism of action. This effect needs clarification and seems not to be correlated to cytotoxicity of the drug for migrating white blood cells, as evidenced by 'in vitro' examination
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