631 research outputs found
The influence of presurgical vertical control of the dentition on final aesthetics of the face
No full textThe vertical aesthetic control in orthognatic surgery depends from a wide number of factors. Some of these factors are under the orthodontist’s control, some other under the maxillo-facial surgeon’s control. Because of the complexity of these number of factors author does not believe possible or useful to suggest general outlines of treatment, he only recommends to deeply integrate orthodontist’s and surgeon’s treatment program in every single case. Author presents some clinical cases to illustrate these concepts
Synthesis of new organocatalysts having ortho-anilinyl-ethanol structure
No full textSynthesis of new organocatalysts having ortho-anilinyl-ethanol structure
Paolo Lupattelli,* Nadia Di Blasio, Lucia Chiummiento, Maria Funicello
Department of Chemistry “Antonio Mario Tamburro”, University of Basilicata,
v.le Ateneo Lucano 10, 85100 Potenza (Italy). email: [email protected]
Increasing numbers of industrial applications are now based on asymmetric organocatalytic reactions, and the "green" aspect of this chemistry coupled with the catalysts’ sustainability, is widely considered for replacing reactions based on metal catalysis.1 Among the various activation methods, aminocatalysis relates to the particular reactivity of the nitrogen.
For many years our research group has been concerned with the synthesis of 2,3-diaryloxiranes and their elaboration via regio- and stereoselective ring opening reactions, with the aim to afford, in a simple and immediate way, functionalized 1,2-diarylethanols.2 Recently a general regioselective reductive ring opening reaction was optimized and different enantiopure ortho-anilinyl-phenylethanols were prepared.3
By the use of suitable oxo-nucleophiles and acid catalysts, diastereoisomeric anilinyldiols were also obtained alternatively, in enantiospecific manner. Enantiopure aminoethers 1-2, and aminodiethers 3-4 were prepared starting from enantiopure trans epoxide 5 which were transformed into aminoalcohols 6, aminodiol 7 and dioxolane 8 by original procedure of regio- and stereoselective ring opening reactions. By selective alkylations of anilinyl alcohols recently optimized by our research group, compounds 7 and 8 were easily transformed into final products 1-3 with different substituents R1 and R2. Analogously, dioxolane 8 was elaborated using classical transacetalization reactions and reductions furnishing 4. Results of their efficiency in terms of acceleration and asymmetric induction in enantioselective organocatalytic reactions (aldol reactions, Michael additions, -heteroatom functionalizations of carbonyl) will also be presented.
1) (a) Dalko, P.I. Enantioselective Organocatalysis Wiley-VCH, 2007. (b) Blaser, H.U.; Pugin, B.; Spindler, F. J. Mol. Catal., Chemical 2005, 231, 1-20. (c) Thirsk, C.; Jay, D. Chem. Ind. 2004, 16, 15-17.
2) (a) Bonini, C.; Lupattelli, P. ARKIVOC, 2008, (viii), 150-182. (b) Solladié-Cavallo, A.; Lupattelli, P.; Bonini, C.; Ostuni, V.; Di Blasio, N. J. Org. Chem. 2006, 71, 9891. (c) Solladié-Cavallo, A.; Lupattelli, P.; Bonini, C. J. Org. Chem. 2005, 70, 1605.
3) Di Blasio, N.; Lopardo, M.T.; Lupattelli, P. Eur. J. Org. Chem. 2009, 938-944
Letture operaiste di Gramsci. Il caso Negri
No full textThis article aims to analyze the relationship between Antonio Negri and the
political and philosophical categories of Antonio Gramsci. It is my intention to
resume, from the Sixties of the last century to nowadays, the stragegical uses of
Gramsci’s thought by Negri. According to me, we can divide four periods in the
theoretical framework of Negri. In the first one, Gramsci is an author incompatible with the workerist strategy of class struggle. In the second one, there is a
sort of use of Gramsci against Gramsci. Pointendly, Negri tries to subtract the
author of the Prison Notebooks from the prerogatives of the Pci. After the arrest
of Negri in the 1979, Gramsci’s figure became more ambiguous and we can find
his categories under track in the pages of Negri. Then, also due the closness
with Michael Hardt, Gramsci starts to become an unavoidable reference point
for both the authors. Therefore, my aim with this essay is to show that, far from
being just an opponent, in Negri’s perspective Gramsci is a priviliged partner in
the analysis of the present and the theoretical construction of the future
Valutazione dei movimenti mandibolariin 33 pazienti affetti da sindrome di Moebius
No full textLa sindrome di Moebius è una malattia congenita rara, non evolutiva, caratterizzata da paralisi bilaterale dei nervi facciale ed abducente spesso associata a malformazioni degli arti superiori e/o inferiori. Oltre al difetto del VI e VII paio, altri nervi, più frequentemente il III, il V, il VIII, il IX, il X, il XI e il XII paio possono essere coinvolti. Questo lavoro si propone di investigare un ampio campione di pazienti affetti rispetto ad un campione omogeneo di soggetti sani, al fine di verificare se il deficit neurologico possa compromettere l’adeguato sviluppo delle funzioni motorie temporo-mandibolari. Il campione totale in esame è risultato costituito da 33 soggetti, 16 maschi e 17 femmine. Di questi 14 appartenevano al gruppo A di Terzis (forma completa) e 19 al gruppo B di Terzis (forma incompleta). Il gruppo di controllo, scelto con parametri di maggior omogeneità possibile rispetto al gruppo affetto, era costituito da 50 soggetti, 18 maschi e 32 femmine. Il campione Moebius evidenziava una netta riduzione dell’escursione mandibolare per quanto riguarda l’apertura della bocca. Questa differenza risultava statisticamente significativa a p<0,01. Anche per quanto riguarda i movimenti di protrusiva e lateralità, la differenza risultava significativa a p<0,01. Si raccomanda quindi un attento e precoce programma di riabilitazione neuromotoria di questi pazienti sin dalla primissima infanzia.
Nome Autore - Presentatore: Magnifico Marisabel
E-mail: [email protected]
Telefono:
320 821455
Foreword [to: Translation and Interpretation. Practicing the Knowledge of Literature, Göttingen, V&R, 2022]
No full textSintesi di ligandi amminoalcolici e di 1,4-diidro-2H-benzo[d][1,3]ossazine a partire dal (R,R) trans 2-(2-nitrofenil)-3-fenilossirano
No full textEffetto dell’expressive writing sulla depressione post-partum e sullo stress materno
No full textQuesto studio esamina il rapporto tra stress materno e disturbi depressivi e posttraumatici successivi al parto. Obiettivo della ricerca è verificare se l'intervento di expressive writing sia efficace nel contenere e ridurre la sintomatologia materna a tre mesi dal parto.Hanno partecipato alla ricerca 100 donne (età media 31,8) esaminate prima, innediatamente dopo il parto e a tre mesi. I risultati evidenziano l'effetto positivo dell'expressive writing dulla sintomatologia postraunatica e depressiva e nel modulare lo stress materno nella relazione col bambino
Comportamenti di internalizzazione ed esternalizzazione nei bambini: il ruolo dello stress materno e degli stili educativi.
No full textChildren’s internalizing and externalizing behaviour: the influence
of parenting stress and parenting practices. Background:
Research shows that high levels of parenting stress cause
child maladjustment. However, many questions are still
left unexplored as for the process by which parental
stress influences child adjustment. Current debate put forward
whether stress plays a direct role or a mediated role
by child-rearing practices. This study aims to further verify
whether maternal stress has a direct impact or an impact
mediated by child-rearing practices on the development
of internalizing and externalizing behaviours in
children.
Methods: Eighty-two mothers of school-age children
were administered the Parenting Stress Index-Short
Form to evaluate their level of parental stress, the Parenting
Practices Questionnaire to measure their childrearing
practices and the Child Behaviour Checklist to
evaluate their children’s internalizing and externalizing
behaviours. The hypothesis of the study was verified by
a mediation model of regression (Baron and Kenny,
1986). The predictors were the three PSI-SF parenting
dimensions (parental distress, parent-child dysfunctional
interaction and difficult child), the mediating variables
were the three parenting styles (authoritarian, authoritative
and permissive) and the outcome were the internalizing
and externalizing behaviours.
Results: Results showed a direct relationship between
parenting stress and children’s internalizing and externalizing
behaviours. In particular, internalizing behaviours
were predicted by the parent-child dysfunctional
interaction and difficult child factors of parenting stress.
For externalizing behaviours, the direct effect emerges
for both on the PSI subscale difficult child and for the
permissive parenting practice
- …
