Search results for "CATA"
showing 10 items of 13753 documents
A pilot study of internet usage patterns in a group of italian university students.
2012
“ Hydrogeochemical study of water points and springs in Ortigia Island (Syracuse)”
2009
Analisi della scarsa attitudine alla vaccinazione antinfluenzale dei medici italiani del futuro: risultati di uno studio multicentrico condotto in 18…
2014
Introduzione: Nel corso della stagione influenzale, gli Operatori Sanitari (OS) rappresentano una delle categorie lavorative maggiormente investite dalla responsabilità di limitare la diffusione della patologia influenzale tra i pazienti ospedalizzati e contemporaneamente di proteggere se stessi garantendo la continuità dell'assistenza sanitaria nei periodi di maggiore assenteismo lavorativo e sovraccarico delle attività assistenziali (picco influenzale stagionale). La vaccinazione antinfluenzale, ormai riconosciuta sicura ed efficace, rappresenta ancora oggi una argomento di dibattito tra gli OS, nonostante le raccomandazioni dei Center for Disease Control and Prevention Statunitense ed Eu…
risultati dello studio pilota del progetto spin uti: un modello per la valutazione ed il monitoraggio dei programmi in sanità pubblica
2007
Uno studio di intevento per la prevenzione delle infezioni ospedaliere
1989
IDENTIFICATION OF BACTERIAL TAXA IN ARCHAEOLOGICAL WATERLOGGED WOOD
2014
Summary The microscopic and molecular techniques described in this study are aimed at understanding the degradation processes of the anatomical structure of submerged archaeological wood, correlating it to the degradation induced by bacteria. The SEM micrographs showed alterations of the wooden structure due to bacterial colonization, as well as the presence of pyrite framboids. The difficulty of extracting bacterial DNA from wooden fragments belonging to submerged finds is well-known, due to the presence of many inhibitors; this study describes some extraction and in vitro amplification protocols for wooden submerged finds. The results of the molecular investigations, based on the analysis…
Substituent effects on the mechanism changeover in a multipathway reaction: A model for the behavior of biological systems?
2009
By studying the rearrangement in dioxane/water of a series of (Z)-arylhydrazones of 5-amino-3- benzoyl-1,2,4-oxadiazole (1a-k) into the relevant (2-aryl-5-phenyl-2H-1,2,3-triazol-4-yl)ureas (2a-k) in a wide range of pS + (an operational scale of proton concentration in the mixed solvent used; dioxane/water, 1:1, v:v), the occurrence of three different reaction pathways (specific-acid- catalyzed, uncatalyzed, and general-base-catalyzed) for the relevant SNi process has been recently enlightened. The significantly different substituent effects on the three pathways cause some crossovers in the log kA,R versus pS + plots. Both the pS + value at which the crossover occurs and the width of the u…
Impiego di un substrato fluorogeno per una prova rapida di conferma della colimetria in acque di mare.
1989
The Preparation of Diaryl Sulfoxonium Triflates and Their Application in Palladium‐Catalyzed Cross‐Coupling Reactions
2022
Chemistry 17(19), e202200828 (2022). doi:10.1002/asia.202200828
Thiol-Stabilized Atomically Precise, Superatomic Silver Nanoparticles for Catalyzing Cycloisomerization of Alkynyl Amines
2018
Abstract Both the electronic and surface structures of metal nanomaterials play critical roles in determining their chemical properties. However, the non-molecular nature of conventional nanoparticles makes it extremely challenging to understand the molecular mechanism behind many of their unique electronic and surface properties. In this work, we report the synthesis, molecular and electronic structures of an atomically precise nanoparticle, [Ag206L72]q (L = thiolate, halide; q = charge). With a four-shell Ag7@Ag32@Ag77@Ag90 Ino-decahedral structure having a nearly perfect D5h symmetry, the metal core of the nanoparticle is co-stabilized by 68 thiolate and 4 halide ligands. Both electroche…