42 research outputs found
Studio dei livelli sierici di Vit. A in pazienti affetti da carcinoma vescicale. Nota preliminare.
No full textValore del dosaggio sierico della Vit. A e del Beta- carotene nel carcinoma della vescica.
No full textPhysical training effects in renal transplant recipients.
No full textINTRODUCTION: Several studies demonstrated the benefits of rehabilitation in uraemic patients. This study evaluates physical and psychosocial effects of exercise on renal transplant recipients (RTRs).
PATIENTS AND METHODS: Eight RTRs were evaluated before and after an exercise training consisting of thirty 40-minute sessions, three times a week, performed with the interval training technique.
RESULTS: Hospital Anxiety and Depression Scale (HADS) significantly decreased (p<0.04 and <0.008, respectively). Quality of life mean scores (SF-36 test) significantly increased (p<0.000). No differences were recorded for muscle and fat mass, maximal explosive power of the lower limbs, alkaline and acid phosphatase, parathormone (PTH), myoglobin, lipoprotein-A, glomerular filtration rate (GFR), at rest heart rate, and cardiac troponin. IL-6 decreased from 2.8±0.6 to 1.7±0.5 pg/mL (p<0.01). Resting MAP fell from 112±4 to 99±3 mmHg (p<0.02). The metabolic threshold rose from 33±4 to 43±5% (p<0.033). The blood lactate level at peak exercise increased from 5.2±0.9 to 6.2±0.7 mmol/L (p<0.012). The maximum oxygen uptake increased from 1200±210 to 1359±202 mL/min (p<0.05), iso-load oxygen uptake decreased from 1110±190 to 1007±187 mL/min (p<0.034). The maximum working capacity increased from 90±14 to 115±15 watts (p<0.000).
CONCLUSION: This study suggests that an appropriate dose of physical training is a useful, safe and non-pharmacologic contribution to RTR treatment
Is Physical training useful to improbe the outcome of renal transplant recipients (RTRS)? 2005; 10 (suppl): A332.
No full textIS PHYSICAL TRAINING USEFUL TO IMPROVE THE OUTCOME OF RENAL TRANSPLANT RECIPIENTS (RTRS)?
No full textLas Vegas, il serpente e il cactus. Una proposta di classificazione delle domande a risposta aperta
No full textThe Author explains the process of classifying the answers to open questions in the questionnaire. After having briefly recalled the debate between the proponents of the open questions and the proponents of the closed questions, it describes both the method used to classify the answers and the classification plans for each question, illustrating their structure and main characteristics.La Autora ilustra en detalle el proceso con el que se clasifican la repuestas a unas preguntas abiertas del cuestionario. A la luz del debate entre partidarios de las preguntas abiertas y los de las preguntas cerradas, presenta el criterio general que ha aplicado y los específicos esquemas de clasificación relativos a cada pregunta, ilustrando su estructura y sus principales características.L'Autrice illustra il processo di classificazione delle risposte a domande aperte presenti nel questionario. Dopo aver richiamato brevemente il dibattito tra fautori delle domande aperte e fautori delle domande chiuse, descrive sia il metodo usato per classificare le risposte sia i piani di classificazione per ciascuna domanda, illustrandone la struttura e le caratteristiche principali
Alla ricerca del futuro e del passato: il tempo nell’immaginario degli intervistati
No full textThe Author discusses the relationship between temporality and everyday life experience, starting from the two stories of zigrino and gambero. After showing the reactions prevalent in the Italian sample, she presents a classification related to the way in which the respondents experience temporality. To further investigate the relationship between experience and time considers the questions related to hard life / easy life, boring life / rewarding life and leads a cluster analysis. Four groups emerged; each of which privileges a dimension of temporality starting from his own life experiences.La Autora discute la relación entre la temporalidad y la experiencia de la vida cotidiana, a partir de las dos historias de zigrino y gambero. Después de mostrar las reacciones prevalecientes en la muestra italiana, presenta una clasificación relacionada con la forma en que los encuestados experimentan la temporalidad. Para investigar más a fondo la relación entre la experiencia y el tiempo, considera las preguntas relacionadas con la vida difícil / vida fácil, vida aburrida / vida gratificante y lidera un cluster analysis. Cuatro grupos emergieron; cada uno de los cuales privilegia una dimensión de temporalidad a partir de sus experiencias de vida.L'Autrice discute il rapporto tra temporalità ed esperienza di vita quotidiana, a partire dalle due storie zigrino e gambero. Dopo aver mostrato le reazioni prevalenti nel campione italiano, presenta una classificazione relativa al modo in cui gli intervistati esperiscono la temporalità. Per indagare più a fondo il rapporto tra esperienza e tempo considera le domande relative a vita dura/vita facile, vita noiosa/vita gratificante e conduce una cluster analysis. Sono emersi quattro gruppi; ciascuno dei quali privilegia una dimensione della temporalità a partire dalle sue esperienze di vita
Il Moto Browniano Matematico
No full textNella tesi viene presentata la definizione assiomatica del moto browniano, che ha le sue basi nella teoria della probabilità, come risulta naturale, essendo il moto browniano l'immagine macroscopica che emerge dallo spostamento casuale di una particella che si muove in uno spazio d-dimensionale senza compiere salti eccessivamente grandi. Perciò preliminarmente si propone la descrizione dello spazio di probabilità in cui si lavora, in particolare si costruisce una misura di probabilità, detta misura di Wiener. Quindi si dà prova dell'effettiva esistenza del moto browniano attraverso due diverse argomentazioni, che fanno riferimento l’una a Paley e Wiener, l'altra a Lévy. Nel primo caso la costruzione del moto browniano è basata sull'utilizzo di variabili aleatorie complesse con distribuzione gaussiana e di serie convergenti in L^2 e adopera risultati della teoria delle serie di Fourier; nel secondo caso il moto browniano è costruito come limite uniforme di funzioni continue.
Infine si analizzano le principali caratteristiche matematiche del moto browniano, in particolare le proprietà di continuità Holder, di non monotonia e di non differenziabilità
Soluble iron inputs to the Southern Ocean through recent andesitic to rhyolitic volcanic ash eruptions from the Patagonian Andes
No full textPatagonia, due to its geographic position and the dominance of westerly winds, is a key area that contributes to the supply of nutrients to the Southern Ocean, both through mineral dust and through the periodic deposits of volcanic ash. Here we evaluate the characteristics of Fe dissolved (into soluble and colloidal species) from volcanic ash for three recent southern Andes volcanic eruptions having contrasting features and chemical compositions. Contact between cloud waters (wet deposition) and end-members of andesitic (Hudson volcano) and rhyolitic (Chaitén volcano) materials was simulated. Results indicate higher Fe release and faster liberation rates in the andesitic material. Fe release during particle-seawater interaction (dry deposition) has higher rates in rhyolitic-type ashes. Rhyolitic ashes under acidic conditions release Fe in higher amounts and at a slower rate, while in those samples containing mostly glass shards, Fe release was lower and faster. The 2011 Puyehue eruption was observed by a dust monitoring station. Puyehue-type eruptions can contribute soluble Fe to the ocean via dry or wet deposition, nearly reaching the limit required for phytoplankton growth. In contrast, the input of Fe after processing by an acidic eruption plume could raise the amount of dissolved Fe in surface ocean waters several times, above the threshold required to initiate phytoplankton blooms. A single eruption like the Puyehue one represents more than half of the yearly Fe flux contributed by dust.Fil: Simonella, Lucio Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones En Ciencias de la Tierra; Argentina. Universidad Nacional de Córdoba; ArgentinaFil: Palomeque, M. E.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones En Ciencias de la Tierra; Argentina. Universidad Nacional de Córdoba; ArgentinaFil: Croot, P. L.. National University of Ireland Galway; IrlandaFil: Stein, A.. Ert Inc.; Estados UnidosFil: Kupckezewski, M.. Universidad Nacional de la Patagonia; ArgentinaFil: Rosales, A.. Universidad Nacional de la Patagonia; ArgentinaFil: Montes, María Luciana. Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Departamento de Física; ArgentinaFil: Colombo, Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones En Ciencias de la Tierra; Argentina. Universidad Nacional de Córdoba; ArgentinaFil: Garcia, Maria Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones En Ciencias de la Tierra; Argentina. Universidad Nacional de Córdoba; ArgentinaFil: Villarosa, Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue; ArgentinaFil: Gaiero, Diego Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones En Ciencias de la Tierra; Argentina. Universidad Nacional de Córdoba; Argentin
Low source-inherited iron solubility limits fertilization potential of South American dust
No full textWhere atmospheric processing is weak due to low anthropogenic emissions, fertilization of iron-limited oceans by non-volcanic mineral dust aerosols strongly depends on iron solubility at the sources. Southern South America (SSA) is a pristine environment and the main dust supplier to the southern oceans, the most sensitive to iron fertilization. Thus, the present-day lack of SSA dust fertilization of the southern oceans is hypothesized to reflect low source-inherited iron bioavailability. However, a dearth of geochemical studies on SSA dust prevents testing this hypothesis. To remedy this, we conducted the first systematic sampling of SSA dust sources. Iron leaching experiments showed fractional solubilities of close-to-source dust (bulk) and dust-emitting surface sediments (<63 µm) in pure water (0.05 ± 0.05%), seawater (0.03 ± 0.04%) and 1% nitric acid (5 ± 6%) that imply a low mass-normalized fertilization potential of SSA dust compared to dust from other regions. Based on grain size, size-resolved mineralogy, elemental chemistry and iron speciation determinations, we found that variability in labile iron is enhanced by high clay contents, small grain size and higher proportions of paramagnetic versus non-paramagnetic iron, irrespective of oxidation state. The independence of the most labile, water-soluble iron on grain size and its strong negative correlation to the Chemical Index of Alteration may imply that we currently underestimate the role of coarse glaciogenic dust as a supplier of bioavailable iron during drier-than-present ice ages when continental chemical weathering was reduced, and during which enhanced supply of dust-borne bioavailable iron to the southern oceans is observed.Fil: Simonella, Lucio Esteban. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Departamento de Fisicoquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Cosentino, Nicolas Juan. Pontificia Universidad Católica de Chile; Chile. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: Montes, María Luciana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaFil: Croot, Peter L.. National University of Ireland Galway. Moore Institute for Research in the Humanities and Social Studies; IrlandaFil: Palomeque, Miriam Edid. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; ArgentinaFil: Gaiero, Diego Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentin
