1,237 research outputs found
A method for engineering-geological mapping: application to the Arezzo and Lucca provinces (Tuscany, Italy)
No full textLithological and geomechanical characters of outcropping rocks are relevant inputs for those applications involving geological issues. For instance, such information are used to implement spatial planning actions/rules influencing land use and transport infrastructures. The same data may also be used when mapping landslide susceptibility/hazard and preparing for landslide risk management. Many geomechanical classification systems for rock masses have been developed for engineering-geological applications (DEERE, 1963; BIENIAWSKI, 1973; BARTON et alii, 1974; HOEK, 1994). Nevertheless, these are site-specific systems or they are applied for specific engineering works (e.g. tunnels), so they are not fully adequate for continuous representations of engineering-geological properties over wide (map scale) areas. In this work, we describe the implementation of a GIS integrating lithological-geomechanical data collected in the field and laboratory with existing geological database to obtain an engineering-geological map at the scale of 1:10,000 for the provinces of Arezzo and Lucca (Tuscany, Italy). The study area is representative of different structural and lithologic settings within the Northern Apennines
Reference values of neuroactive amino acids in the cerebrospinal fluid by high-performance liquid chromatography with electrochemical and fluorescence detection.
No full textSampling and HPLC analysis procedures for CSF amino acid determinations were evaluated. In order to increase sensitivity, a precolumn derivatization of amino acids by o-phthalaldehyde-mercaptoethanoi reagent was used. By using fluorimetric and electrochemical detection in series, positive peak identification can be obtained in a single chromatographic run. It is recommended to analyze freshly collected CSF. Amino acids are stable for short periods over a wide range of temperature, but storage at -80°C is recommended. The CSF samples for the calculation of the reference values were taken from 40 healthy subjects, hospitalized for lumbar disk herniation, placed on the same diet and kept drug-free for at least 1 week. The mean values (μmol/l) and the ranges (in parentheses) were: 0.27 (0.09-0.63), 0.62 (0.18-1.15), 5.32 (3.05-11.50), 6.16 (2.90-13.30), 0.16 (0.03-0.22) for aspartic acid, glutamic acid, glycine, taurine and γ-aminobutyric acid respectively
38. Recurrent pediatric brain tumors: The role of surgery
No full textThe role of radical surgery and adjuvant therapies in the treatment of new diagnosed brain lesions has been focused in several clinical trials. On the contrary little has been done on recurrent pediatric brain tumors. Aggressive chemotherapy is the standard treatment for brain tumors relapses. The aim of our study is testing a protocol including a reoperation as soon as possible radical. Eligibility criteria were: patients with proved relapse, previously treated, located in a surgically amenable area; life expentancy higher than 2 mos; Karnofsky: 50 or higher; no evidence of extraneural dissemination. Patients with neurofibromatosis are excluded. This study showed that: surgical mortality and morbidity are not increased, never additional difficulties are encountered during reoperation in comparison with surgery of new diagnosed tumors. At present it is impossible to affirm if the aggressive surgical treatment of the relapses is the treatment of choice in all brain tumor recurrences. However our experience in MDB, compared with standard treatment of relapses, is encouraging. Results of surgery are not worse than conservative treatment; also morbidity is similar in two different treatment modalities. The treatment of relapsing pediatric brain tumors still represents a major challenge for neurosurgeon and oncologist. This protocol could be useful for prospective randomized studies trying to solve in a more objetive way the positive role of reoperation in the management of different CNS tumors, particularly in malignant oncotypes
Aggravante della clandestinità : (art. 61 n. 11-bis c.p.): uguaglianza calpestata
No full textIl contributo, destinato agli studi in onore del prof. Mario Pisani, è dedicato all'esame della circostanza aggravante comune c.d. della clandestinità, inserita nell'art. 61 n. 11 bis c.p. dal d.l. n. 92/2008 (c.d. decreto sicurezza), conv. in l. n. 125/2008. Si ripercorrono anzitutto i lavori preparatori della disposizione, che prevede un aumento della pena, fino a un terzo, per qualsivoglia reato commesso da chi, al momento del fatto, si trova illegalmente sul territorio dello Stato. Viene quindi messa in rilievo la ratio dell'aggravante, che risiede nella dichiarata lotta al fenomeno dell'immigrazione clandestina, condotta attraverso il diritto penale (l'introduzione dell'aggravante di cui si tratta precede, di poco, quella del c.d. reato di clandestinità, di cui all'art. 10 bis t.u. imm.). Il lavoro affronta quindi il tema, centrale, della legittimità costituzionale della disposizione, risultata controversa, prima ancora che in dottrina, nel corso del dibattito parlamentare. La tesi sostenuta nel contributo, che troverà conferma nella sentenza della Corte costituzionale n. 249 del 2010, è quella della illegittimità costituzionale dell'art. 61 n. 11 bis c.p., per contrasto con il principio di uguaglianza/ragionevolezza (art. 3 Cost.), che quella disposizione letteralmente calpesta. La maggior pena inflitta allo straniero irregolare, per il medesimo fatto-reato commesso da un cittadino italiano o da uno straniero 'regolare', non si giustifica infatti né per un più intenso grado di offesa al bene giuridico tutelato, nè per la maggiore colpevolezza (rimproverabilità) dell'agente; né, infine, per la maggiore pericolosità del reo (lo status di 'clandestino', infatti, non può essere ragionevolmente assunto, in via presuntiva, come espressivo di una maggiore pericolosità e, nella prospettiva della prevenzione speciale, di un corrispondente maggior bisogno di pena)
Seismic retrofit of a RC building using metallic yielding dampers: a case study
No full textMany seismic dissipation devices have been proposed in the literature. However, their application in current practice is rather limited even for the general lack of simple and effective design procedures in the standard building codes. This paper presents an interesting application of metallic yielding dampers to a reinforced concrete school building in Italy. At first, the detailed investigations performed are described in detail, including geometrical, material, and soil surveys. Then, the results of the seismic performance assessment are discussed, and the structural deficiencies are highlighted. Finally, a design procedure is applied that allows an efficient design and dimensioning of dampers, and its effectiveness is demonstrated using the nonlinear response history analysis. The general design approach applied in the seismic retrofit project is illustrated. The construction phases, costs, and execution timing are described and discussed
Fisionomia e ruolo dell'agente-modello ai fini dell'accertamento processuale della colpa generica
No full textSOMMARIO: 1. Premessa: la necessità dell’accertamento processuale della colpa. - 2. L’‘essenza’ della colpa: la violazione di una regola cautelare. - 3. Regola cautelare (non scritta) vs. prevedibilità ed evitabilità dell’evento. - 4. I ‘nodi’ da sciogliere per accertare la colpa generica in sede processuale. - 5. Questione di ‘punti di vista’. - 5.1. Alla ricerca del punto di vista dal quale valutare la prevedibilità e l’evitabilità dell’evento. - 5.2. Il procedimento di costruzione dell’agente-modello a partire da talune note distintive desunte dalla persona dell’agente concreto. - 5.2.1. In particolare: la controversa rilevanza dei deficit intellettuali, culturali e di esperienza dell’agente concreto. - 5.2.2. In particolare: le superiori conoscenze ed abilità dell’agente concreto. - 5.2.3. Un’ultima precisazione in merito al procedimento di costruzione dell’agente-modello. - 6. Conclusione
Post-traumatic epidural cervical abscess (Escherichia coli) [Ascesso cervicale epidurale post-traumatico da Escherichia coli e revisione della casistica]
No full textAbscess formation in the spinal epidural space is a rare lesion. Despite modern medical advances, the morbidity and mortality rates asseciated with spinal epidural abscess remain significant, and the diagnosis is often elusive. Post-traumatic epidural abscess of the cervical spine is reported in a 51 year old man. RM imaging of the spinal cord allowed for prompt diagnosis. At the operation the culture of the abscess drainage grew Escherichia Coli
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Recent results from KTEV
No full textThe implications of the published KTeV K{sub L}{sup 0} {yields} {pi}{sup 0}{mu}{sup +}{mu}{sup -} result for interpreting recent {Sigma}{sup +} {yields} p{mu}{sup +} {mu}{sup -} results are discussed. The status of the KTeV {Xi}{sup 0} {yields} {Sigma}{sup +} {mu}{sup -}{nu} analysis is given. The KTeV |V{sub us}| result is also given
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Inferred limits on lepton flavor violating decays of the Ks
No full textStrong model independent upper bounds on Br(K{sub s} {yields} {pi}{sup 0} e{mu}) may be inferred from recent experimental limits on Br(K{sub L} {yields} {pi}{sup 0} e{mu}) and Br(K{sup +} {yields} {pi}{sup +}e{sup +}{mu}{sup -}). From this result, upper bounds for Br(K{sub s} {yields} e{mu}) may be obtained for a broad class of models. Models outside of this class seem unlikely
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