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Book Review: Meteorites: Their Impact on Science and History, B. Zanda, M. Rotaru
No full textBook Review: Meteorites: Their Impact on Science and History, B. Zanda, M. Rotaru. Cambridge University Press, Cambridge, United Kingdom (2001).The Meteoritics & Planetary Science archives are made available by the Meteoritical Society and the University of Arizona Libraries. Contact [email protected] for further information.Migrated from OJS platform February 202
Metodo per l'individuazione delle linee aperte nei tubi di vetro
No full textLa presente invenzione riguarda un metodo per misurare la qualità di un
oggetto che è trasparente rispetto ad una determinata tecnologia di ispezione,
con forma tubolare, ad esempio un tubo di vetro.
Inoltre, l’invenzione riguarda un dispositivo atto a realizzare tale metodo
di misura della qualità. In particolare può essere utilizzato per produrre vetro senza difetti da utilizzare nel settore farmaceutico
First method for the preparation of strongly electrophilic chiral sulfinimines, and applications in asymmetric synthesis
No full textA new and preparatively useful method for the synthesis of non racemic alpha-trifluoromethyl alpha-amino acids is presented, using chiral sulfinimines of trifluoropyruvate as key-building blocks
I materiali lapidei dell'area archeologica della città romana di Industria (Monteu da PO-Torino): ipotesi sulla provenienza
No full text
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Ricerca di portatori di Staphylococcus aureus nel faringe degli alunni della scuola elementare di Monteroni d'Arbia in Provincia di Siena
No full textPortatori di Staphylococcus aureus enterotossico tra gli addetti a due mense aziendali del senese
No full textFrom the period of October 1987 to January 1988, 9 samples were taken from 16 workers in company canteens situated in the Sienna area. The study of enterotoxin staphylococci strains was carried out of the pharynx, nose, skin of the face and the hands. The investigation required the use of the Staphylo-Zyme P.B.I. kit and RPLA Oxoid set. The most frequently found enterotoxins were A and D, either alone or together
Enantioselective pummerer-type rearrangement of gamma-fluoro-beta-enaminosulfoxides: Efficient approach to chiral non-racemic alpha,alpha-N,S-disubstituted ketals of beta-fluoro-pyruvaldehydes
No full textThe enantioselective synthesis of chiral non-racemic alpha,alpha-N,S-disubstituted ketals of beta-fluoro-pyruvaldehydes 2 has been efficiently accomplished by one-per treatment of the gamma-fluoro-beta-enaminosulfoxides 1 with trifluoroacetic anhydride and then with silica gel. Two fast and enantioselective rearrangements should be involved in the reaction. A change of reaction conditions or the use of other promoters, like acyl chlorides, can produce achiral vinyl sulfides
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