// +author:p alonso +author:alonso var _ajax_res = { hits: 134, first: 0, results: [ {userid:"marc.buyse", "refid":155,"attachment":"","articletype":"article","sectionheading":"","title":"The meta-analytic framework for the evaluation of surrogate endpoints in clinical trials. ","year":"2008","author":"Molenberghs G., Burzykowski T., Alonso A., Assam P., Tilahun A., Buyse M.","journal":"J Statist Planning Inference ","volume":"138","number":"","pages":"432-449","month":"","doi":"","pubmed":"","pdflink":"","urllink":"","abstract":"","note":"","tags":""} , {userid:"pablo.ortega-deballon", "articletype":"article","pages":"","author":"P Ortega Deballon, M T Alonso Garc\u00eda, M Moreno Azcoita","year":"2001","title":"Successful treatment of immune thrombocytopenic purpura (ITP) with splenectomy.","month":"Feb","journal":"World J Surg","publisher":"","volume":"25","number":"2","note":"","tags":"Humans,Immunoglobulins, Intravenous,Purpura, Thrombocytopenic, Idiopathic,Splenectomy","booktitle":"","editor":"","abstract":"","address":"","school":"","issn":"0364-2313","doi":"","isi":"","pubmed":"11338029","key":"OrtegaDeballon2001","howpublished":"","urllink":"","refid":17} , {userid:"patricia.delapresa", "articletype":"article","pages":"S634-S635","author":"R E Alonso, P de la Presa, A Ayala, A L Garcia","year":"1998","title":"Electric quadrupole interactions at Ta-181 in BaTiO3\/BaHfO3 solid solutions","month":"","journal":"Journal of the Korean Physical Society","publisher":"","volume":"32","number":"","note":"Alonso, RE de la Presa, P Ayala, A Garcia, AL xD;9th International Meeting on Ferroelectricity (IMF-9) xD;Aug 25-29, 1997 xD;Seoul, south korea xD;de la Presa, Patricia\/A-7470-2008; Ayala, Alejandro\/A-7518-2008 xD;de la Presa, Patricia\/0000-0002-9456-8320; Ayala, Alejandro\/0000-0002-9247-6780 xD;S xD;2","tags":"","booktitle":"","editor":"","abstract":"In ferroelectric ABO(3) perovskites the substitution of B cation by another one of the same chemical group can strongly alter its electric properties. In this contribution we report the results of a systematic study of BaTi1-xHfxO3 solid solutions in the paraelectric phase with x = 0.95, 0.90, 0.70, 0.50 and 0.3. Samples were prepared by firing mixtures of the corresponding oxides at 1300 degrees C and characterized by XRD analysis. We have measured the hyperfine interactions at Ta-181 in B sites as a function of temperature for each concentration. The electric quadrupole interaction measured in these materials reflects the distortion of the electron distribution around probes. These results are analyzed in terms of hafnium concentration.","address":"","school":"","issn":"0374-4884","doi":"","isi":"","pubmed":"","key":"Alonso1998a","howpublished":":\/\/WOS:000072212200070","urllink":":\/\/WOS:000072212200070","refid":3,"weight":3} , {userid:"patricia.delapresa", "articletype":"article","pages":"2139-2153","author":"R E Alonso, A L Garcia, A Ayala, P de la Presa","year":"1998","title":"Temperature dependence of the nuclear quadrupole interaction at Zr-Ti sites in PbZrxTi(1-x)O3 in the Zr-rich rhombohedral and cubic phases","month":"","journal":"Journal of Physics-Condensed Matter","publisher":"","volume":"10","number":"9","note":"Alonso, RE Garcia, AL Ayala, A de la Presa, P xD;de la Presa, Patricia\/A-7470-2008; Ayala, Alejandro\/A-7518-2008 xD;de la Presa, Patricia\/0000-0002-9456-8320; Ayala, Alejandro\/0000-0002-9247-6780","tags":"","booktitle":"","editor":"","abstract":"In this paper, the hyperfine quadrupole interaction at the Zr-Ti site of PbZrxTi(1-x)O-3 (PZT) polycrystalline samples is studied for the first time. Powders for x = 0, 0.1, 0.2, 0.4, 0.6, 0.8, 0.9 and 1 were prepared and characterized by XRD. The lattice constants and space groups were obtained as functions of Ti concentration. PAC analyses were done for ferroelectric PZT for x = 0.9 and 0.8 as a function of temperature, and for x = 0.6 at RT. Also antiferroelectric PbZrO3 was analysed. Low-concentration Ta-181 nuclei were used as probes. In the ferroelectric and paraelectric phases of PZT compounds two sites were occupied by probes. For each site the quadrupole frequency, asymmetry and relative distribution width parameters were obtained as functions of temperature above and below the Curie temperature. For PbZrO3 only one site was detected with a static quadrupole interaction below T-c and a nuclear spin-relaxation process above it. Furthermore, the temperature dependence of the hyperfine parameters, the possible origin of both quadrupole interactions in PZT and the perturbation that characterizes the cubic phases of ABO(3) and ABB'O-3 compounds are discussed.","address":"","school":"","issn":"0953-8984","doi":"10.1088\/0953-8984\/10\/9\/017","isi":"","pubmed":"","key":"Alonso1998c","howpublished":":\/\/WOS:000072478500017","urllink":":\/\/WOS:000072478500017","refid":5,"weight":5} , {userid:"patricia.delapresa", "articletype":"article","pages":"97-106","author":"A Lopez-Garcia, R Alonso, P de la Presa, A Ayala","year":"1999","title":"Hyperfine interactions in cubic perovskites","month":"","journal":"Hyperfine Interactions","publisher":"","volume":"120","number":"1-8","note":"Lopez-Garcia, A Alonso, R de la Presa, P Ayala, A xD;11th International Conference on Hyperfine Interactions xD;Aug 23-28, 1998 xD;Durban, south africa xD;de la Presa, Patricia\/A-7470-2008; Ayala, Alejandro\/A-7518-2008 xD;de la Presa, Patricia\/0000-0002-9456-8320; Ayala, Alejandro\/0000-0002-9247-6780","tags":"","booktitle":"","editor":"","abstract":"ABO(3) perovskites display several physical properties determined by the characteristics of A and B cations. These compounds have cubic structure at high temperature. Lower symmetry cells that are distorted cubes are found at low temperature. Defects modify the properties of these compounds. Under standard conditions oxygen vacancies are produced. Cation substitution also alters the characteristics of perovskites. These materials have been studied by Perturbed Angular Correlation (PAC) spectroscopy and other hyperfine techniques. In this way abundant information is available to determine charge distributions close to probes. In the cubic phase perturbations were detected that are produced by the interaction of probes with defects. To show up these effects we analyze the quadrupole interaction at Ta-181 in several compounds: ABO(3) with A = Ca, Sr and Ba, BaTi1-xHfxO3 and PbZr1-xTixO3 for 0 less than or equal to x less than or equal to 1. Three different quadrupole interactions were found and are interpreted in terms of distinct probe-oxygen vacancy configurations.","address":"","school":"","issn":"0304-3843","doi":"","isi":"","pubmed":"","key":"Lopez-Garcia1999","howpublished":":\/\/WOS:000082617800012","urllink":":\/\/WOS:000082617800012","refid":42,"weight":42} , {userid:"patricia.delapresa", "articletype":"article","pages":"183-187","author":"R E Alonso, P de la Presa, A Ayala, A Lopez-Garcia, C Livage","year":"1998","title":"The stability of PbZr0.52Ti0.48O3 prepared by the Sol-Gel method","month":"","journal":"Solid State Communications","publisher":"","volume":"107","number":"4","note":"Alonso, RE de la Presa, P Ayala, A Lopez-Garcia, A Livage, C xD;de la Presa, Patricia\/A-7470-2008; Ayala, Alejandro\/A-7518-2008 xD;de la Presa, Patricia\/0000-0002-9456-8320; Ayala, Alejandro\/0000-0002-9247-6780","tags":"","booktitle":"","editor":"","abstract":"Samples of PbZr0.52Ti0.48O3 (PZT) were fabricated by the Sol-Gel method and characterized by X-ray diffraction analysis. The Rietveld method was used to obtain lattice parameters and grain sizes as a function of the annealing temperature. A powder sample previously annealed at 873 K was irradiated to activate the Ta-181 probe. Then, Perturbed Angular Correlation (PAC) spectra were measured at RT and temperatures above 873 K to study the thermal behaviour on samples capsulated in SiO2 tubes. The hyperfine parameters observed as a function of temperature show changes in this PZT compound that would correspond to thermal evolution of defects. Furthermore, the reaction of PZT with the substrate was observed at 1173 K, obtaining at this temperature the hyperfine parameters corresponding to SiZrO4. At this temperature no trace of the PZT was left. (C) 1998 Elsevier Science Ltd. All rights reserved.","address":"","school":"","issn":"0038-1098","doi":"10.1016\/s0038-1098(98)00184-7","isi":"","pubmed":"","key":"Alonso1998b","howpublished":":\/\/WOS:000074289900008","urllink":":\/\/WOS:000074289900008","refid":4,"weight":4} , {userid:"patricia.delapresa", "articletype":"article","pages":"17-39","author":"R E Alonso, A P Ayala, P de la Presa, C Horowitz, A Lopez-Garcia","year":"2002","title":"Hyperfine interactions in the cubic phase of BaTixHf1-xO3","month":"","journal":"Ferroelectrics","publisher":"","volume":"274","number":"","note":"Alonso, RE Ayala, AP de la Presa, P Horowitz, C Lopez-Garcia, A xD;de la Presa, Patricia\/A-7470-2008; Ayala, Alejandro\/A-7518-2008 xD;de la Presa, Patricia\/0000-0002-9456-8320; Ayala, Alejandro\/0000-0002-9247-6780","tags":"","booktitle":"","editor":"","abstract":"The hyperfine quadrupole interaction at probes in sites with cubic point group symmetry was measured in many perovskite-type compounds. This interaction is commonly associated to the presence of oxygen vacancies close to probes. The effect of this point defect on Ta-181 probe in BaTi x Hf1-xO3 for x = 0.70, 0.50, 0.30, 0.10, 0.05, and 0.01, is studied. The lattice constant of these oxides at room temperature were measured using XRD technique. The quadrupole parameters corresponding to probe-defect interaction were obtained by means of Perturbed Angular Correlation (PAC) spectroscopy as functions of both, composition and temperature. A static, asymmetric and distributed quadrupole interaction was fitted to all PAC data. This interaction was observed to be strongly composition dependent. These results and those corresponding to compositions 0.75 less than or equal to x < 1 were compared to the ones obtained using the point charge method for the calculation of the electric field gradient. The proposed model took into account polarized oxygen vacancies, different covalence of Ti-O and Hf-O bonds and using computational simulation for cations and oxygen vacancies lattice positions.","address":"","school":"","issn":"0015-0193","doi":"10.1080\/00150190213953","isi":"","pubmed":"","key":"Alonso2002","howpublished":":\/\/WOS:000178078100002","urllink":":\/\/WOS:000178078100002","refid":2,"weight":2} , {userid:"pablo.ortega-deballon", "refid":"26","attachment":"","articletype":"article","sectionheading":"","title":"Intestinal subocclusion caused by an inguinoscrotal hernia with sliding of the sigmoid","year":"2000","author":"P Ortega Daballon, M I Mart\u00ednez Prieto, A Hern\u00e1ndez Matias, M T Alonso Garcia, S Sirvent Cerd\u00e1, M Moreno Azcoita","journal":"Rev Clin Esp","volume":"200","number":"10","pages":"577-578","month":"Oct","doi":"","pubmed":"11153245","pdflink":"","urllink":"","abstract":"","note":"","tags":"Aged,Genital Diseases, Male,Hernia, Inguinal,Humans,Intestinal Obstruction,Male,Scrotum"} , {userid:"sizquierdo", "refid":48,"repocollections":"","attachment":"","_thumb":"","articletype":"article","sectionheading":"","title":" Variante en gen HARS detectada en exoma cl\u00ednico: etiolog\u00eda de neuropat\u00eda perif\u00e9rica tras m\u00e1s de 20 a\u00f1os sin diagn\u00f3stico. Adv Lab Med. ","year":"2020","author":"Lahoz Alonso R, Sienes Bailo P, Capablo Liesa JL, \u00c1lvarez de Andr\u00e9s S, Bancalero Flores JL, Izquierdo \u00c1lvarez S.","journal":"Adv Lab Med. ","volume":"","number":"","pages":"","month":"May","doi":"https:\/\/doi.org\/10.1515\/almed-2020-0020 ","pubmed":"","pdflink":"","urllink":"","abstract":"","note":"","tags":"","weight":48} , {userid:"l.mbuagbaw", "articletype":"article","pages":"","author":"Amilcar Azamar-Alonso, Sergio A Bautista-Arredondo, Fiona Smaill, Lawrence Mbuagbaw, Andrew P Costa, Jean-Eric Tarride","year":"2021","title":"Patient characteristics and determinants of CD4 at diagnosis of HIV in Mexico from 2008 to 2017: a 10-year population-based study.","month":"Nov","journal":"AIDS research and therapy","publisher":"","volume":"18","number":"1","note":"","tags":"Adult,CD4 Lymphocyte Count,Delayed Diagnosis,Early Diagnosis,Female,HIV Infections,Humans,Male,Mexico","booktitle":"","editor":"","abstract":"In 2007-2012 the Mexican government launched the National HIV program and there was a major change in HIV policies implemented in 2013-2018, when efforts focused on prevention, increase in early diagnosis and timely treatment. Still, late HIV diagnosis is a major concern in Mexico due to its association with the development of AIDS development and mortality. Thus, the objectives of this study were to identify the determinants of late HIV diagnosis (i.e. CD4 count less than 200 cells\/mm) in Mexico from 2008 to 2017 and to evaluate the impact of the 2013-2017 National HIV program.","address":"","school":"","issn":"1742-6405","doi":"10.1007\/s10461-016-1560-1","isi":"","pubmed":"34774077","key":"Azamar-Alonso2021","howpublished":"","urllink":"","refid":185,"weight":185} ] } ; ajaxResultsLoaded(_ajax_res);