Emissions from Ethers and Organic Carbonate Fuel Additives: A Review     

Arteconi  Alessia  Mazzarini  Alessandro  Di Nicola  Giovanni 《Water, air, and soil pollution》2011,221(1-4):405-423

Water, Air, & Soil Pollution - This paper is a review of the available literature on the main features of 11 of the most widely adopted oxygenated additives to base gasoline and diesel,...  相似文献   

Genotypic versus phenotypic identification of staphylococcal species of canine origin with special reference to Staphylococcus schleiferi subsp. coagulans     

Jousson O  Di Bello D  Vanni M  Cardini G  Soldani G  Pretti C  Intorre L 《Veterinary microbiology》2007,123(1-3):238-244

A comparative study was performed to examine the respective accuracy of 16S rDNA sequencing and of the commercial biochemical assay ID32 STAPH (bioMérieux, Marcy l'Etoile, France) in the identification of 232 staphylococcal samples representing 20 species and subspecies isolated from 367 dogs. Notable differences in species distribution were observed by comparing genotypic and phenotypic data. Partial sequencing of 16S rDNA resulted in an unambiguous identification of 226 (97.4%) of the isolates, whereas the phenotypic approach resulted in a correct diagnosis of 162 (69.8%) of the isolates. Statistical agreement between genotypic and phenotypic identification of staphylococci was substantial (Kappa coefficient of 0.6-0.8) for Staphylococcus aureus, S. hominis, S. warneri, S. cohnii subsp. urealyticus, and S. simulans, and "almost perfect" (Kappa coefficient of 0.8-1) for S. intermedius, S. epidermidis, S. equorum, S. haemolyticus, S. sciuri, and S. kloosi. No agreement above that expected by chance (Kappa coefficient=0) was observed for S. schleiferi subsp. coagulans, which was either confounded with S. intermedius and S. capitis, or categorized as unacceptable by the biochemical assay. Given the growing importance of this pathogen in veterinary medicine and its frequent misidentification with related staphylococci, a PCR-RFLP approach producing a S. schleiferi-specific restriction profile was developed. This fast and reliable assay represents a valuable tool in assisting in the monitoring of this pathogen.  相似文献   

Ultrasonographic and pathologic study of schwannoma in a Goldfish (Carassius auratus)          下载免费PDF全文

Rubina Sirri  Alessia Diana  Filippo Scarpa  Chiara Brachelente  Giovanni Vitellozzi  Luca Ceredi  Luciana Mandrioli 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2015,44(4):586-591

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A new chelonibiid from the Miocene of Zanzibar (Eastern Africa) sheds light on the evolution of shell architecture in turtle and whale barnacles (Cirripedia: Coronuloidea)     

Alberto COLLARETA  William A. NEWMAN  Giulia BOSIO  Giovanni COLETTI 《Integrative zoology》2022,17(1):24-43

The fossil history of turtle and whale barnacles (Coronuloidea: Chelonibiidae, Platylepadidae, Coronulidae and †Emersoniidae) is fragmentary and has only been investigated in part. Morphological inferences and molecular phylogenetic analyses on extant specimens suggest that the roots of whale barnacles (Coronulidae) are to be found among the chelonibiid turtle barnacles, but the hard-part modifications that enabled early coronuloids to attach to the cetacean skin are still largely to be perceived. Here, we reappraise a fossil chelonibiid specimen from the Miocene of insular Tanzania that was previously referred to the living species Chelonibia caretta. This largely forgotten specimen is here described as the holotype of the new species †Chelonibia zanzibarensis. While similar to C. caretta, †C. zanzibarensis exhibits obvious external longitudinal parietal canals occurring in-between external longitudinal parietal septa that abut outwards to form T-shaped flanges, a character so far regarded as proper of the seemingly more derived Coronulidae and Platylepadidae. Along with these features, the presence of a substrate imprint on the shell exterior indicates that †C. zanzibarensis grasped its host's integument in much the same way as coronulids and platylepadids, albeit without the development of macroscopic parietal buttresses and bolsters. Thin section analyses of the inner parietal architecture of some extant and extinct coronuloids conclusively demonstrate that vestiges of comparable external parietal microstructures are present in some living members of Chelonibiidae. This observation strengthens the unity of Coronuloidea while significantly contributing to our understanding of the evolution of the coronuloid shell structure in adapting to a diverse spectrum of hosts.  相似文献   

A combined analysis based on microbial communities and volatile organic compounds as a tool to study soil quality in an urban environment     

Luisa NERI  Fabiano SILLO  Elisa ZAMPIERI  Erica LUMINI  Giovanni MARTURANO  Chiara Degli ESPOSTI  Gianniantonio PETRUZZELLI  Beniamino GIOLI  Alessandro ZALDEI  Rita BARALDI  Raffaella BALESTRINI 《土壤圈》2023,33(4):670-675

<正>Dear Editor,Soil quality is defined as“the capacity of a soil to function,within ecosystem and land use boundaries,to sustain productivity,maintain environmental quality,and promote plant and animal health”(Doran and Parkin 1994).In this context,soil functionality is fundamental to the biosphere and is highly dependent on the associated microbiota.Soil microorganisms are relevant for terrestrial ecosystem functioning,and understanding the functional changes of the biological community i...  相似文献   

Correction to: Factors influencing the occurrence of fall armyworm parasitoids in Zambia     

Durocher&#;Granger  L&#;na  Mfune  Tibonge  Musesha  Monde  Lowry  Alyssa  Reynolds  Kathryn  Buddie  Alan  Caf&#;  Giovanni  Offord  Lisa  Chipabika  Gilson  Dicke  Marcel  Kenis  Marc 《Journal of pest science》2022,95(1):539-540

Journal of Pest Science -  相似文献   

History of science. Sputnik and satellite astronomy     

Bignami GF 《Science (New York, N.Y.)》2007,318(5847):53-54

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Accumulation and erosion of Mars' south polar layered deposits     

Seu R  Phillips RJ  Alberti G  Biccari D  Bonaventura F  Bortone M  Calabrese D  Campbell BA  Cartacci M  Carter LM  Catallo C  Croce A  Croci R  Cutigni M  Di Placido A  Dinardo S  Federico C  Flamini E  Fois F  Frigeri A  Fuga O  Giacomoni E  Gim Y  Guelfi M  Holt JW  Kofman W  Leuschen CJ  Marinangeli L  Marras P  Masdea A  Mattei S  Mecozzi R  Milkovich SM  Morlupi A  Mouginot J  Orosei R  Papa C  Paternò T  Persi del Marmo P  Pettinelli E  Pica G  Picardi G  Plaut JJ  Provenziani M  Putzig NE  Russo F  Safaeinili A  Salzillo G 《Science (New York, N.Y.)》2007,317(5845):1715-1718

Mars' polar regions are covered with ice-rich layered deposits that potentially contain a record of climate variations. The sounding radar SHARAD on the Mars Reconnaissance Orbiter mapped detailed subsurface stratigraphy in the Promethei Lingula region of the south polar plateau, Planum Australe. Radar reflections interpreted as layers are correlated across adjacent orbits and are continuous for up to 150 kilometers along spacecraft orbital tracks. The reflectors are often separated into discrete reflector sequences, and strong echoes are seen as deep as 1 kilometer. In some cases, the sequences are dipping with respect to each other, suggesting an interdepositional period of erosion. In Australe Sulci, layers are exhumed, indicating recent erosion.  相似文献   

Activity and multiplicity of Glutamic Dehydrogenase in sugar-beet     

Paolo Spettoli  Giovanni Cacco 《Plant foods for human nutrition (Dordrecht, Netherlands)》1977,27(2):135-140

Sixty roots of a diploid and sixty of a tetraploid sugar-beet variety were individually characterized for the fresh weight, sugar content, Glutamic Dehydrogenase (GDH) activity and multiplicity as revealed by the electrofocusing technique. Tetraploid roots showed significantly higher fresh weight (P<0.01), lower sugar content (P<0.01) and lower GDH activity (P<0.05) in comparison with diploids. Within each ploidy status families with similar GDH isoenzyme profile showed a negative correlation between GDH activity and sugar content in the case of diploids while in tetraploid such a correlation was absent. GDH multiplicity failed to show any significant correlation with sugar content in both diploid and tetraploid varieties.

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Zusammenfassung Aktivität und Isoenzymspektrum der Glutamatdehydrogenase in der Zuckerrübe.Von sechzig Wurzeln einer diploiden Varietät der Zuckerrübe und sechzig einer tetraploiden wurden in beiden Gruppen folgende Werte bestimmt: 1) Frischgewicht, 2) Zuckergehalt, 3) Glutamat-Dehydrogenaseaktivität und 4) Isoenzymspektrum der GDH (bestimmt mittels elektrofocusing). Die Wurzeln der tetraploiden Gruppe zeigten signifikant höhere Werte für das Frischgewicht (P<0.01) und signifikant niedrigere Werte für die Eigenschaften 2) = (P<0.01) und 3) = (P<0.05). Innerhal der durch ähnliche GDH-isoenzymspektren gekennzeichneten Gruppen konnte man folgendes feststellen: Für die Diploiden eine negative Korrelation zwischen GDH-Aktivität und Zuckergehalt; für die Tetraploiden keine Korrelation. Wurden hingegen dieselben Gruppen ohne Rücksicht auf die Ploidie gebildet, so ergab sich ebenfalls keine Korrelation zwischen den genannten Größen.

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Resume Activité et multiplicité de la glutamate dehydrogenase dans les betteraves à sucre.Soixantes racines d'une variété diploïde et soixantes d'une variété tetraploïde de betterave à sucre ont été caractérisées par le poids frais, la teneur en sucre, l'activité et la multiplicité de la glutamate dehydrogenase (GDH). Les racines tetraploïdes ont démontrées un poids frais plus haut (P<0.01), une teneur en sucre plus basse (P<0.01) et une activité de GDH plus basse (P<0.05) que les racines diploïdes. Dans chaque état de ploïdie, les familles caractérsées par le même profile isoenzymatique, demontraient une corrélation négative entre l'activité de GDH et la teneur en sucre dans le cas de racines diploides seulement. La multiplicité de GDH n'avait aucune corrélation significative avec la teneur en sucre soit dans les racines diploïdes soit dans celles tetraploïdes.

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This research was supported by the Consiglio Nazionale delle Ricerche.  相似文献   

Distribution of Mercury and Other Heavy Metals in Core Sediments of the Northern Adriatic Sea     

Fabbri  Daniele  Gabbianelli  Giovanni  Locatelli  Clinio  Lubrano  Debora  Trombini  Claudio  Vassura  Ivano 《Water, air, and soil pollution》2001,129(1-4):143-153

Seven sediment cores were collected along a transect about20 km off from the mouth of the Po River, in the northernAdriatic Sea (Italy). Cores were characterised by differentdepositional sequences associated with late Pleistocene-Holocene lowstand (LST), transgressive (TST) and highstand (HST) system tracts. Sediment samples were analysed for mercury, copper, nickel, chromium, manganese and iron, aswell as for total organic matter. Metal distributiongenerally showed vertical and spatial variability ascribed tograin size effects with no significant anthropogenicperturbation. Conversely, mercury showed vertical profilescharacterised by surface enrichment, with concentrations inthe upper layer (50–230 ng g^-1) exceeding 3–11 times the background value of 20 ng g^-1 determined in bottomcores. Surface maxima were attributed to anthropogenic mercurydelivered mainly by the Po River.  相似文献