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Prof. Francesco Saverio Zanon 《Pure and Applied Geophysics》1945,7(1-4):23-32
Riassunto Raccolta con un metodo molto semplice, venne analizzata la polvere atmosferica di Venezia in diverse località ed in condizioni diverse di tempo. La quantità di sale trovata viene posta in relazione col vento e con la pioggia.
Summary After having collected by a very simple method the atmospheric dust of Venice in different places and various conditions of weather, this was then analysed. The quantity of salt found in it is put into relation with the wind and rain.
Zusammenfassung Der Verf. berichtet über die Salzgehalt-Bestimmungen welche er, mit einem einfachen Verfahren, für den atmosphärischen Staub in verschiedenen Orten von Venedig und Umgebungen, sowie bei verschiedenem Wetter, durchgeführt hat. Die Engebnisse sind mit der Wind- und Niederschlag-Verteilungen verglichen und erläutert.相似文献
125.
Prof. Francesco Saverio Zanon 《Pure and Applied Geophysics》1944,6(1-2):37-75
Prof.Francesco Saverio Zanon, Direttore dell' Osservatorio Geofisico del Seminario Patriarcale di Venezia e della stazione meteo rologica dell' Ospedale al Mare del Lido. 相似文献
126.
Prof. P. Francesco Saverio Zanon 《Pure and Applied Geophysics》1942,4(1):152-170
Riassunto Vengono esposti i caratteri delle variazioni di temperatura della superficie della sabbia al Lido di Venezia, desunti dalle osservazioni del tredicennio 1929–1941, per le quali si procede ad opportuni confronti con i dati dell'attinometro del Violle relativi al medesimo periodo.
Zusammenfassung Die Eigenschaften der Temperatur-änderungen der Sandoberfläche auf dem Strand vom Lido in Venedig werden angegeben und untersucht, gestüzt auf den Beobachtungen der 13 Jahre 1929–1941, welche mit den Ergebnissen der Strahlungsmessungen mit einem Violle-Aktinometer in derselben Periode verglichen und erlätert sind.相似文献
127.
Frenzilli G Bocchetti R Pagliarecci M Nigro M Annarumma F Scarcelli V Fattorini D Regoli F 《Marine environmental research》2004,58(2-5):609-613
Harbours can be considered as model environments for developing and validating field monitoring procedures and to investigate mechanistic relationships between different biological responses. In this study several biomarkers were investigated in marine mussels caged for 4 weeks (June-July 2001) into an industrialized harbour of NW Italy. Organisms were collected at different time-intervals to better characterize the sensitivity, temporal variations and interactions of analysed responses. Besides single antioxidants the total oxyradical scavenging capacity (TOSC) assay was used to analyse the capability of the whole antioxidant system to neutralize specific forms of radicals: these data were further integrated by measurement of DNA integrity, oxidized bases and the impairment of lysosomal membrane stability in haemocytes. Results showed a biphasic trend for single antioxidants and TOSC, with an increase during the first 2 weeks of exposure to the polluted site followed by a progressive decrease up to a severe depletion in the final part of the experiment. 相似文献
128.
Francesco Canganella Giovanna Bianconi Agata Gambacorta Chiaki Kato Katsuyuki Uematsu 《Marine Ecology》2002,23(S1):1-10
Abstract. Hydrothermal vent ecosystems have been extensively investigated during the last 20 years; shallow water hot springs (typically found below 50 m depth) have also been studied, and from these ecosystems many thermophilic and hyperthermophilic organisms were isolated and described.
The submarine caves of Cape Palinuro were discovered long ago, but only during the last decades were geological and biological investigations carried out, yielding a large number of reports on this fascinating environment. During the last two years, several samples of water, mud, and/or bacterial mat were collected within the "Grotta Azzurra", and enrichment experiments were performed using peptone, starch, glucose or pullulan as main organic nutrients. Many heterotrophic strains were isolated and most of them grew optimally between 37 and 43 ° C with the addition of 0-2 % NaCl. Growth was usually observed between 10 and 50 ° C the range of growth pH was 4 to 9, and NaCl concentrations up to 10–12 % were tolerated in most cases.
The analysis of 16S rDNA performed with the most representative isolates showed a close phylogenetic relationship with the genera Bacillus, Vibrio, Citrobacter and Escherichia. Moreover, an isolate showing morphological and physiological similarities with the genus Enterococcus was characterised and taxonomically described based on the 16S rDNA sequence. 相似文献
The submarine caves of Cape Palinuro were discovered long ago, but only during the last decades were geological and biological investigations carried out, yielding a large number of reports on this fascinating environment. During the last two years, several samples of water, mud, and/or bacterial mat were collected within the "Grotta Azzurra", and enrichment experiments were performed using peptone, starch, glucose or pullulan as main organic nutrients. Many heterotrophic strains were isolated and most of them grew optimally between 37 and 43 ° C with the addition of 0-2 % NaCl. Growth was usually observed between 10 and 50 ° C the range of growth pH was 4 to 9, and NaCl concentrations up to 10–12 % were tolerated in most cases.
The analysis of 16S rDNA performed with the most representative isolates showed a close phylogenetic relationship with the genera Bacillus, Vibrio, Citrobacter and Escherichia. Moreover, an isolate showing morphological and physiological similarities with the genus Enterococcus was characterised and taxonomically described based on the 16S rDNA sequence. 相似文献
129.
The modified nucleoside 7,8-dihydro-8-oxodeoxyguanosine (8-oxo-dG) is an index of oxidative DNA damage. An immunohistochemical approach based on the use of monoclonal antibody 1F7 against 8-oxo-dG was investigated in marine organisms with immunoperoxidase and immunofluorescent detection. Relative staining intensity as a measure of the 8-oxo-dG level was microscopically assessed. After laboratory exposures to benzo[a]pyrene (B[a]P), higher levels of oxidative DNA damage were clearly detected in all treated animals compared to controls. While this method eliminates DNA extraction reducing the processing of biological samples, absolute values are not provided. Further, the method requires only small amounts of tissue and potentially discriminates susceptibility to oxidative damage in different cell types. These results suggest that the assay should have practical applications in marine ecotoxicology. 相似文献
130.
Although elasmobranchs are widely distributed species, commonly found on sandy, gravely or muddy bottoms, several biological aspects of their metabolism still remain poorly investigated. In this work the efficiency of antioxidant system and detoxification enzymes were investigated in the coastal spotted dogfish Scyliorhinus canicula and in the red mullet Mullus barbatus for comparison with a teleost species. Organisms were sampled during a bottom trawl survey and analyzed for the biotransformation activity (EROD), levels of metallothioneins, catalase, glutathione S-transferases and total oxyradical scavenging capacity (TOSC) toward peroxyl radicals and hydroxyl radicals. EROD activity in the elasmobranchs was more than one order of magnitude lower than in the red mullets, while similar levels of metallothioneins were measured in these species. S. canicula showed significantly lower antioxidant enzymes and a more reduced efficiency in neutralizing *OH; on the other hand the scavenging capability toward ROO* was comparable in S. canicula and M. barbatus. 相似文献