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Seville, Spain

The University of Seville is a university in Seville, Spain. Founded under the name of Colegio Santa María de Jesús in 1505, it has a present student body of over 65,000, and is one of the top-ranked universities in the country. Seville is the 2000-year-old artistic, cultural, and financial capital of Andalusia in southern Spain; it is situated on the plain of the River Guadalquivir. Wikipedia.

In the phase III PARAMOUNT trial, pemetrexed continuation maintenance therapy reduced the risk of disease progression versus placebo (hazard ratio [HR], 0.62; 95% CI, 0.49 to 0.79; P < .001). Here we report final overall survival (OS) and updated safety data. In all, 939 patients with advanced nonsquamous non-small-cell lung cancer (NSCLC) received four cycles of pemetrexed-cisplatin induction therapy; then, 539 patients with no disease progression and Eastern Cooperative Oncology Group performance status 0 or 1 were randomly assigned (2:1) to maintenance pemetrexed (500 mg/m(2) on day 1 of 21-day cycles; n = 359) or placebo (n = 180). Log-rank test compared OS between arms as measured from random assignment (α = .0498). The mean number of maintenance cycles was 7.9 (range, one to 44) for pemetrexed and 5.0 (range, one to 38) for placebo. After 397 deaths (pemetrexed, 71%; placebo, 78%) and a median follow-up of 24.3 months for alive patients (95% CI, 23.2 to 25.1 months), pemetrexed therapy resulted in a statistically significant 22% reduction in the risk of death (HR, 0.78; 95% CI, 0.64 to 0.96; P = .0195; median OS: pemetrexed, 13.9 months; placebo, 11.0 months). Survival on pemetrexed was consistently improved for all patient subgroups, including induction response: complete/partial responders (n = 234) OS HR, 0.81; 95% CI, 0.59 to 1.11 and stable disease (n = 285) OS HR, 0.76; 95% CI, 0.57 to 1.01). Postdiscontinuation therapy use was similar: pemetrexed, 64%; placebo, 72%. No new safety findings emerged. Drug-related grade 3 to 4 anemia, fatigue, and neutropenia were significantly higher in pemetrexed-treated patients. Pemetrexed continuation maintenance therapy is well-tolerated and offers superior OS compared with placebo, further demonstrating that it is an efficacious treatment strategy for patients with advanced nonsquamous NSCLC and good performance status who did not progress during pemetrexed-cisplatin induction therapy.

Cabello A.,University of Seville
Physical Review Letters | Year: 2013

We show that the maximum quantum violation of the Klyachko-Can- Binicioǧlu-Shumovsky (KCBS) inequality is exactly the maximum value satisfying the following principle: The sum of probabilities of pairwise exclusive events cannot exceed 1. We call this principle "global exclusivity," since its power shows up when it is applied to global events resulting from enlarged scenarios in which the events in the inequality are considered jointly with other events. We identify scenarios in which this principle singles out quantum contextuality, and show that a recent proof excluding nonlocal boxes follows from the maximum violation imposed by this principle to the KCBS inequality. © 2013 American Physical Society.

Valverde J.M.,University of Seville
Journal of Materials Chemistry A | Year: 2013

The Ca-looping process shows a considerable potential for reducing postcombustion CO2 emissions from power plants in the short-term as demonstrated by the recent success of a 1.7 MWt pilot plant. This process involves the carbonation reaction of CaO to capture CO2 and the subsequent calcination of limestone (CaCO3) to regenerate the sorbent. Yet the capture capacity of natural limestones decreases with the increasing number of calcination/carbonation cycles, which is mainly attributed to a decrease of the reactive surface area with the number of cycles as a result of material sintering during calcination. A number of techniques have been developed in the last few years to improve the durability of Ca-based sorbents and minimize their loss in adsorption capacity. The goal is to increase the active surface area and the stability of the pore structure of the sorbent, which would enhance their efficiency for CO2 capture. Material chemistry methods oriented to this objective are generally focused on the use of rigid porous materials as carriers of the Ca-based sorbents, use of additives to improve the sorbent thermal stability, reduction of the sorbent particle size down to the nanometer scale, and use of synthetic precursors to produce novel sorbents with a rich micropore structure. Besides enhancing the thermal stability in newly developed synthetic sorbents, an issue of concern is to promote their mechanical stability. Attrition of natural limestone particles is a main problem affecting the sorbent performance in the Ca-looping process. This paper is devoted to a critical review on the novel Ca-based sorbents developed in the last few years with improved thermal and mechanical stability. This journal is © 2013 The Royal Society of Chemistry.

Cabello A.,University of Seville
Physical Review Letters | Year: 2015

Quantum n-body correlations cannot be explained with (n-1)-body nonlocality. However, this genuine n-body nonlocality cannot surpass certain bounds. Here we address the problem of identifying the principles responsible for these bounds. We show that, for any n≥2, the exclusivity principle, as derived from axioms about sharp measurements, and a technical assumption give the exact bounds predicted by quantum theory. This provides a unified explanation of the bounds of single-body contextuality and n-body nonlocality, and connects two programs towards understanding quantum theory. © 2015 American Physical Society.

Obstructive sleep apnea (OSA) is a risk factor for cardiovascular death in men, but whether it is also a risk factor in women is unknown. To investigate whether OSA is a risk factor for cardiovascular death in women and assess whether continuous positive airway pressure (CPAP) treatment is associated with a change in risk. Prospective, observational cohort study. 2 sleep clinics in Spain. All women consecutively referred for suspected OSA between 1998 and 2007. Every woman had a diagnostic sleep study. Women with an apnea-hypopnea index (AHI) less than 10 were the control group. Obstructive sleep apnea was diagnosed when the AHI was 10 or higher (classified as mild to moderate [AHI of 10 to 29] or severe [AHI ≥30]). Patients with OSA were classified as CPAP-treated (adherence ≥4 hours per day) or untreated (adherence <4 hours per day or not prescribed). Participants were followed until December 2009. The end point was cardiovascular death. 1116 women were studied (median follow-up, 72 months [interquartile range, 52 to 88 months]). The control group had a lower cardiovascular mortality rate (0.28 per 100 person-years [95% CI, 0.10 to 0.91]) than the untreated groups with mild to moderate OSA (0.94 per 100 person-years [CI, 0.10 to 2.40]; P = 0.034) or severe OSA (3.71 per 100 person-years [CI, 0.09 to 7.50]; P < 0.001). Compared with the control group, the fully adjusted hazard ratios for cardiovascular mortality were 3.50 (CI, 1.23 to 9.98) for the untreated, severe OSA group; 0.55 (CI, 0.17 to 1.74) for the CPAP-treated, severe OSA group; 1.60 (CI, 0.52 to 4.90) for the untreated, mild to moderate OSA group; and 0.19 (CI, 0.02 to 1.67) for the CPAP-treated, mild to moderate OSA group. The study was observational and not randomized, and OSA was diagnosed by 2 different methods. Severe OSA is associated with cardiovascular death in women, and adequate CPAP treatment may reduce this risk. None.

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