79 research outputs found

    Effective electrochemical n-type doping of ZnO thin films for optoelectronic window applications

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    [EN] An effective n-type doping of ZnO thin films electrochemically synthetized was achieved by varying the chloride ion concentration in the starting electrolyte. The ratio between chloride and zinc cations was varied between 0 and 2 while the zinc concentration in the solution was kept constant. When the concentration of chloride in the bath increases an effective n-type doping of ZnO films takes place. n-type doping is evidenced by the rise of donors concentration, obtained from Mott-Schottky measurements, as well as from the blueshift observed in the optical gap owing to the Burstein-Moss effect.This work was supported by Spanish Government through MCINN grant MAT2009-14625-C03-03 and European Commission through NanoCIS project FP7-PEOPLE-2010-IRSES (ref. 269279).Cembrero Coca, P.; Mollar García, MA.; Singh, K.; Marí Soucase, B. (2013). Effective electrochemical n-type doping of ZnO thin films for optoelectronic window applications. 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ZnO nanorods: synthesis, characterization and applications. Semiconductor Science and Technology, 20(4), S22-S34. doi:10.1088/0268-1242/20/4/003Huang, M. H., Wu, Y., Feick, H., Tran, N., Weber, E., & Yang, P. (2001). Catalytic Growth of Zinc Oxide Nanowires by Vapor Transport. Advanced Materials, 13(2), 113-116. doi:10.1002/1521-4095(200101)13:23.0.co;2-hWang, X., Summers, C. J., & Wang, Z. L. (2004). Large-Scale Hexagonal-Patterned Growth of Aligned ZnO Nanorods for Nano-optoelectronics and Nanosensor Arrays. Nano Letters, 4(3), 423-426. doi:10.1021/nl035102cPark, W. I., Kim, D. H., Jung, S.-W., & Yi, G.-C. (2002). Metalorganic vapor-phase epitaxial growth of vertically well-aligned ZnO nanorods. Applied Physics Letters, 80(22), 4232-4234. doi:10.1063/1.1482800Davidová, M., Nachtigallová, D., Bulánek, R., & Nachtigall, P. (2003). Characterization of the Cu+Sites in High-Silica Zeolites Interacting with the CO Molecule:  Combined Computational and Experimental Study. 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    Informe sobre la evolución de la asistencia psiquiátrica en la provincia de Alicante (1981-1988).

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    Hasta el año 1981, la asistencia psiquiátrica en la provincia, se reduce a un único dispositivo asistencial de características manicomiales y asilares: el Sanatorio Psiquiátrico Provincial que depende económica y administrativamente de la Diputación Provincial. A título orientativo, señalamos algunos datos que dan cuenta de su estructura y funcionamiento: Según el censo de primero de enero de ese año, eran 620 las camas ocupadas. Escasa dotación de personal asistencial (dos médicos psiquiatras a dedicación parcial)

    Informe sobre la evolución de la asistencia psiquiátrica en la provincia de Alicante (1981-1988).

    Get PDF
    Hasta el año 1981, la asistencia psiquiátrica en la provincia, se reduce a un único dispositivo asistencial de características manicomiales y asilares: el Sanatorio Psiquiátrico Provincial que depende económica y administrativamente de la Diputación Provincial. A título orientativo, señalamos algunos datos que dan cuenta de su estructura y funcionamiento: Según el censo de primero de enero de ese año, eran 620 las camas ocupadas. Escasa dotación de personal asistencial (dos médicos psiquiatras a dedicación parcial)

    Informe sobre la evolución de la asistencia psiquiátrica en la provincia de Alicante (1981-1988).

    Get PDF
    Hasta el año 1981, la asistencia psiquiátrica en la provincia, se reduce a un único dispositivo asistencial de características manicomiales y asilares: el Sanatorio Psiquiátrico Provincial que depende económica y administrativamente de la Diputación Provincial. A título orientativo, señalamos algunos datos que dan cuenta de su estructura y funcionamiento: Según el censo de primero de enero de ese año, eran 620 las camas ocupadas. Escasa dotación de personal asistencial (dos médicos psiquiatras a dedicación parcial)

    Mutation status and immunoglobulin gene rearrangements in patients from northwest and central region of Spain with chronic lymphocytic leukemia

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    This is an open access article distributed under the Creative Commons Attribution License.-- et al.The aim of this study was to investigate the frequency and mutation status of the immunoglobulin heavy variable chain (IGHV) in a cohort of 224 patients from northwest and central region of Spain diagnosed with chronic lymphocytic leukemia (CLL), and to correlate it with cytogenetic abnormalities, overall survival (OS) and time to first treatment (TTFT). 125 patients had mutated IGHV, while 99 had unmutated IGHV. The most frequently used IGHV family was IGHV3, followed by IGHV1 and IGHV4. The regions IGHV3-30, IGHV1-69, IGHV3-23, and IGHV4-34 were the most commonly used. Only 3.1% of the patients belonged to the subfamily IGHV3-21 and we failed to demonstrate a worse clinical outcome in this subgroup. The IGHV4 family appeared more frequently with mutated pattern, similar to IGHV3-23 and IGHV3-74. By contrast, IGHV1-69 was expressed at a higher frequency in unmutated CLL patients. All the cases from IGHV3-11 and almost all from IGHV5-51 subfamily belonged to the group of unmutated CLL.The study was partially supported by grants from the Spanish Fondo de Investigaciones Sanitarias 02/1041, FIS 09/01382, FIS 09/01543, and PI12/00281; RD12/0036/0069 from Red Tematica de Investigación Cooperativa en Cáncer (RTICC), Instituto de Salud Carlos III (ISCIII), Spanish Ministry of Economy and Competitiveness & European Regional Development Fund (ERDF) “Una manera de hacer Europa”; and Caja de Burgos-Banca Cívica. A. Rodrígues was fully supported by an Ayuda Predoctoral FIS de Formación en Investigacion by the Spanish Fondo de Investigaciones Sanitarias. M. Hernandez-Sanchez was partially supported by a grant from the “Fundacion Española de Hematología y Hemoterapia.” Partially supported by grants from “Proyectos de Investigacion Biomédica del SACYL” 106/A/06.Peer Reviewe

    Recovery of polyclonal immunoglobulins during treatment in patients ineligible for autologous stem-cell transplantation is a prognostic marker of longer progression-free survival and overall survival

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    Immunoparesis is the suppression of normal polyclonal immunoglobulins and is present in most patients with newly diagnosed multiple myeloma (MM). The association of immunoparesis at diagnosis, and particularly its recovery along with treatment, with survival in patients ineligible for autologous stem-cell transplantation (ASCT) has not been well established. This retrospective study evaluated the impact of immunoparesis in 431 patients diagnosed with MM, ineligible for ASCT, with a median overall survival of 36 months [95% confidence interval (CI): 31–40]. Immunoparesis was present in 81.2% of patients at diagnosis and was associated with a trend to a worse overall response rate (ORR: 84.8% vs. 74.9%; OR 1.88 (95% CI: 0.97–3.63), shorter progression-free survival (PFS) [22.0 vs. 18.2 months; hazard ratio (HR) 0.775; 95%CI: 0.590–1.018; p = 0.066], and overall survival (OS) (45.9 vs. 34.2 months; HR 0.746; 95% CI: 0.551–1.010; p = 0.057). Twenty-four per cent of patients who had immunoparesis at diagnosis recovered polyclonal immunoglobulins in the follow-up period. Interestingly, these patients had a better ORR (96.3% vs. 68.2%; OR 12.29 (95% CI: 3.77–40.06), PFS (HR 0.703; 95CI%: 0.526–0.941; p = 0.018) and OS (HR 0.678; 95 CI%: 0.503–0.913; p = 0.011) than patients who did not recover it. In summary, restoring a healthy immune system along with first-line treatment in patients with MM, not receiving ASCT, is associated with better outcomes

    Primary care referrals of patients with potentially serious diseases to the emergency department or a quick diagnosis unit: a cross-sectional retrospective study.

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    BACKGROUND: In Spain, primary healthcare (PHC) referrals for diagnostic procedures are subject to long waiting-times, and physicians and patients often use the emergency department (ED) as a shortcut. We aimed to determine whether patients evaluated at a hospital outpatient quick diagnosis unit (QDU) who were referred to ED from 12 PHC centers could have been directly referred to QDU, thus avoiding ED visits. As a secondary objective, we determined the proportion of QDU patients who might have been evaluated in a less rapid, non-QDU setting. METHODS: We carried out a cross-sectional retrospective cohort study of patients with potentially serious conditions attended by the QDU from December 2007 to December 2012. We established 2 groups of patients: 1) patients referred from PHC to QDU (PHC-QDU group) and 2) patients referred from PHC to ED, then to QDU (PHC-ED-QDU group). Two observers assessed the appropriateness/inappropriateness of each referral using a scoring system. The interobserver agreement was assessed by calculating the kappa index. Multivariate logistic regression analysis was performed to identify the factors associated with the dependent variable 'ED referral'. RESULTS: We evaluated 1186 PHC-QDU and 1004 PHC-ED-QDU patients and estimated that 93.1% of PHC-ED-QDU patients might have been directly referred to QDU. In contrast, 96% of PHC-QDU patients were found to be appropriately referred to QDU first. The agreement for PHC-QDU referrals (PHC-QDU group) was rated as excellent (ϰ=0.81), while it was rated as good for PHC-ED referrals (PHC-ED-QDU group) (ϰ=0.75). The mean waiting-time for the first QDU visit was longer in PHC-QDU (4.8 days) than in PHC-ED-QDU (2.6 days) patients (P=.001). On multivariate analysis, anemia (OR 2.87, 95% CI 1.49-4.55, P<.001), rectorrhagia (OR 2.18, 95% CI 1.10-3.77, P=.01) and febrile syndrome (OR 2.53, 95% CI 1.33-4.12, P=.002) were independent factors associated with ED referral. Nearly one-fifth of all QDU patients were found who might have been evaluated in a less rapid, non-QDU setting. CONCLUSIONS: Most PHC-ED-QDU patients might have been directly referred to QDU from PHC, avoiding the inconvenience of the ED visit. A stricter definition of QDU evaluation criteria may be needed to improve and hasten PHC referrals

    MicroRNA-223 is a novel negative regulator of HSP90B1 in CLL

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    This is an Open Access article distributed under the terms of the Creative Commons Attribution License.-- et al.[Background]: MicroRNAs are known to inhibit gene expression by binding to the 3'UTR of the target transcript. Downregulation of miR-223 has been recently reported to have prognostic significance in CLL. However, there is no evidence of the pathogenetic mechanism of this miRNA in CLL patients. [Methods]: By applying next-generation sequencing techniques we have detected a common polymorphism (rs2307842), in 24% of CLL patients, which disrupts the binding site for miR-223 in HSP90B1 3'UTR. We investigated whether miR-223 directly targets HSP90B1 through luciferase assays and ectopic expression of miR-223. Quantitative real-time polymerase chain reaction and western blot were used to determine HSP90B1 expression in CLL patients. The relationship between rs2307842 status, HSP90B1 expression and clinico-biological data were assessed. [Results]: HSP90B1 is a direct target for miR-223 by interaction with the putative miR-223 binding site. The analysis in paired samples (CD19+ fraction cell and non-CD19+ fraction cell) showed that the presence of rs2307842 and IGHV unmutated genes determined HSP90B1 overexpression in B lymphocytes from CLL patients. These results were confirmed at the protein level by western blot. Of note, HSP90B1 overexpression was independently predictive of shorter time to the first therapy in CLL patients. By contrast, the presence of rs2307842 was not related to the outcome. [Conclusions]: HSP90B1 is a direct target gene of miR-223. Our results provide a plausible explanation of why CLL patients harboring miR-223 downregulation are associated with a poor outcome, pointing out HSP90B1 as a new pathogenic mechanism in CLL and a promising therapeutic target.This work was partially supported by grants from the Spanish Fondo de Investigaciones Sanitarias FIS 09/01543 and PI12/00281, Proyectos de Investigación del SACYL 355/A/09, COST Action EuGESMA (BM0801), Fundación Manuel Solórzano, Obra Social Banca Cívica (Caja Burgos), Fundación Española de Hematología y Hemoterapia (FEHH) and by a grant (RD12/0036/0069) from the Red Temática de Investigación Cooperativa en Cáncer (RTICC), Instituto de Salud Carlos III (ISCIII), Spanish Ministry of Economy and Competitiveness & European Regional Development Fund (ERDF) “Una manera de hacer Europa” (Innocampus). The research leading to these results has received funding from the European Union Seventh Framework Programme [FP7/2007-2013] under Grant Agreement n°306242-NGS-PTL. MHS is fully supported by an Ayuda predoctoral de la Junta de Castilla y Leon by the Fondo Social Europeo. ME Sarasquete is supported by Contrato Miguel Servet (CP13/00080).Peer Reviewe
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