Search results for "SEP"
showing 10 items of 2642 documents
Scrivere del Mezzogiorno.Processi di auto-orientalism nella Letteratura italiana
2014
Questo lavoro guarda al contributo che la letteratura italiana ha dato relativamente alla costruzione e alla sedimentazione, nell'immaginario comune e nella percezione pubblica, dell'identità geografica e culturale del Mezzogiorno, ovvero di quella «consapevolezza geopolitica» di cui parlava Edward Said a proposito di altre aree del globo. Per fare ciò, sono stati identificati e presi in esame due diversi momenti che nella storia d'Italia si sono contraddistinti per una forte ridiscussione dell'immagine delle regioni meridionali del paese. I decenni immediatamente successivi all'Unità, infatti, sono stati caratterizzati da ampi dibattiti in merito al ruolo che il Sud doveva avere all'intern…
First-principles modelling of complex perovskite (Ba1-xSrx)(Co1-yFey)O3-δ for solid oxide fuel cell and gas separation membrane applications
2010
The results of the first principles spin-polarized DFT calculations of the atomic and electronic structure of a complex perovskite (Ba1-xSrx)(Co1-yFey)O3-δ (BSCF) used as a cathode material for solid oxide fuel cells (SOFC) and gas separation membranes are presented and discussed. The formation energies of oxygen vacancies are found to be considerably smaller than in other magnetic perovskites, e.g. (La,Sr)MnO3, which explains the experimentally observed strong deviation of this material from stoichiometry. The presence of oxygen vacancies induces a local charge redistribution, associated with the local lattice perturbation, and expansion of the equilibrium volume, in line with the experime…
Los principales retrocesos promovidos por la Ley Forestal brasileña de 2012
2019
El objetivo de este estudio es analizar los principales retrocesos introdu-cidos por la Ley Forestal de Brasil de 2012 y el contexto político de su formulación. El aná-lisis se basa en la comparación de las reglas que disciplinan los Institutos del Área de Pre-servación Permanente (APP) y del Área de Reserva Legal (ARL) en propiedades agrarias privadas por las Leyes Forestales de 1965 y 2012. Así como en las posiciones y los intere-ses de los actores más relevantes en relación con la protección de los bosques naturales, poniendo de relieve la gran influencia del sector agrario. El estudio demuestra que la Ley Forestal de 2012 fue formulada para anular casi completamente los dos principales …
Mechanisms of Disease: molecular insights into aseptic loosening of orthopedic implants
2007
Despite the success of treating rheumatic disorders with biologic therapies, joint replacement surgery still remains the final treatment option in many cases. Approximately 1.5 million joint arthroplastic operations are performed annually worldwide. Implant failure due to massive bone loss and aseptic loosening of prostheses, however, is a major complication of joint replacement, which can lead to high socioeconomic burdens both for the individual patient and for health-care systems. To date, there is no approved drug therapy to prevent or inhibit periprosthetic osteolysis, and aseptic loosening of prostheses can only be overcome by surgical revision. Research during the past decade, howeve…
Chemical separation and MC-ICPMS analysis of U, Th, Pa and Ra isotope ratios of carbonates
2018
Diagenetic alteration of fossil reef corals may have severe effects on the reliability of 230Th/U-ages. The widely applied criteria introduced to test for the reliability of coral 230Th/U-ages are often not sufficient to identify all altered ages. The combination of 230Th/U- with 231Pa/U-dating has been suggested as a promising method to identify altered ages. Furthermore, 226Ra/230Th ratios can provide information about the diagenetic history during the last 10 000 years. Here we present a method to chemically separate U, Th, Pa and Ra from the same aliquot of a carbonate sample. The isotope ratios of our mixed U–Th–Pa–Ra spike are calibrated using a secular equilibrium material treated in…
"Kumpi on vaarallisempaa, porno vai romanttinen viihde?": Fifty Shades Of Grey -trilogian vastaanotto ja sen vaikutukset nykykulttuurissa
2016
Opinnäytetyö tutkii Fifty Shades of Grey -trilogiaa reseptiotutkimuksen kautta. Tutkielma analysoi pääasiassa internetissä julkaistuja lukijoiden tekstejä ja muita vastaanottoa käsitteleviä tekstejä. Tutkielma pyrkii myös selvittämään millainen vaikutus trilogialla on nykykulttuuriin ja sen erotisoitumiseen.
Comparison of three solid-phase extraction processes in quantification of ciprofloxacin and enrofloxacin in pork meat
2012
Due to strong implications for food safety, control of fluoroquinolones residues in swine meat should be undertaken to verify compliance of the contamination levels with the maximum residue limits recently updated by Commission Regulation (EU) No. 37/2010 of 22 December 2009. Solid-phase extraction is widely used in antibiotic analysis in food of animal origin. In this study, the results of a comparative study using different types of solid-phase extraction columns, HLB, MCX, and MAX, for ciprofloxacin and enrofloxacin analysis, in pork meat, are presented. In addition, diverse sample treatments for defatting, precipitate proteins, eliminate cations, and increase the ionic strength, were us…
Building a continuous multicenter infection surveillance system in the intensive care unit: findings from the initial data set of 9,493 patients from…
2008
OBJECTIVE: To describe the epidemiology of infections in intensive care units (ICUs), whether present at admission or acquired during the stay. METHODS: Prospective data collection lasting 6 months in 71 Italian adult ICUs. Patients were screened for infections and risk factors at ICU admission and daily during their stay. MAIN RESULTS: Out of 9,493 consecutive patients admitted to the 71 ICUs, 11.6% had a community-acquired infection, 7.4% a hospital-acquired infection, and 11.4% an ICU-acquired infection. The risk curve of acquiring infection in the ICU was higher in patients who entered without infection than in those already infected (log-rank test, p < .0001; at 15 days, 44.0% vs. 34.6…
When sepsis affects the heart: A case report and literature review
2015
A 59-year-old nursing home patient with Down syndrome was brought to the internal medicine department of our hospital due to fever, cough without expectorate, and dyspnea. A thoracic computed tomography revealed the presence of bilateral basal parenchymal opacities. Her condition deteriorated after admission and troponin reached a peak serum concentration of 16.9 ng/mL. The patient was in cardiogenic shock. In addition to fluid resuscitation, vaso-active amine infusion was administered to achieve hemodynamic stabilization. The differential diagnosis investigated possible pulmonary embolism, myocardial infarction, and myocarditis. Furthermore, a second transthoracic echocardiogram suggested …
Nonnegative signal factorization with learnt instrument models for sound source separation in close-microphone recordings
2013
Close-microphone techniques are extensively employed in many live music recordings, allowing for interference rejection and reducing the amount of reverberation in the resulting instrument tracks. However, despite the use of directional microphones, the recorded tracks are not completely free from source interference, a problem which is commonly known as microphone leakage. While source separation methods are potentially a solution to this problem, few approaches take into account the huge amount of prior information available in this scenario. In fact, besides the special properties of close-microphone tracks, the knowledge on the number and type of instruments making up the mixture can al…