Papers by Fernando Alonso
Risk factors for single crowns supported by short (6-mm) implants in the posterior region: A prospective clinical and radiographic study
Clinical implant dentistry and related research, Jan 10, 2017
The use of short implants is still not a consensus for challenging clinical situations, such as u... more The use of short implants is still not a consensus for challenging clinical situations, such as unfavorable crown-to-implant (C/I) ratio. This prospective study evaluated the rates of prosthetic complications and implant failure, the mean marginal bone loss of 6-mm dental implants with single crowns in posterior regions and the potential risk factors. Forty-six dental implants, 6-mm long and 4.1-mm wide, were placed in the posterior region in 20 patients. Patients were clinically and radiographically examined after the restoration with single crowns and on a yearly basis. Potential risk factors (arch, bruxism, maximum bite force, anatomical and clinical C/I ratios, and occlusal table area) were analyzed according to the following outcomes: implant survival, bone loss, and prosthetic complications. The mean follow-up time was 45 ± 9 (16-57) months. There was no early loss of implants. After prosthetic loading, 4 implants were lost (2 in the mandible and 2 in the maxilla; 91.3% surviv...
Alternatives for recovering of metals from heavy hydrocarbons spent hydrotreating catalysts: a case of study
Revista Internacional De Contaminacion Ambiental, May 1, 2008
Revista Odonto Ciencia, Apr 10, 2009
Purpose: This study aimed to determine the effect of using calcinable cylinders on the passivity ... more Purpose: This study aimed to determine the effect of using calcinable cylinders on the passivity of a framework that simulates a three-unit fixed partial prosthesis on two implants. Methods: Two 3.75×10 mm external hex implants were used, with their abutments set on a steel base forming the master model. Ten cobalt-chromium alloy frameworks were manufactured by the induction casting technique. Two groups were established: Group 1 used premachined cylinders to cast five frameworks; Group 2 used plastic calcinable cylinders to cast five frameworks. Passivity evaluation was accomplished by using strain gauges placed in the cervical and occlusal regions of the framework pontics. The measurement was performed during screwing of the second prosthetic screw with a torque of 10 Ncm. Data were analyzed by Student's t test (α=0.05).
Consequence analysis to determine damage to buildings from vapour cloud explosions using characteristic curves
Journal of Hazardous Materials, Mar 1, 2008
The objective of this paper is to propose a methodology to estimate the consequences to buildings... more The objective of this paper is to propose a methodology to estimate the consequences to buildings from the pressure wave caused by unconfined vapour cloud explosions (VCEs). This methodology is based on the use of characteristic overpressure-impulse-distance curves, shown in a previous paper [F. Diaz Alonso, E. Gonzalez Ferradas, J.F. Sanchez Perez, A. Miñana Aznar, J. Ruiz Gimeno, J. Martinez Alonso, Characteristic overpressure-impulse-distance curves for vapour cloud, explosions using the TNO Multi-Energy model, J. Hazard. Mater. A137 (2006) 734-741]. They allow the overpressure and impulse at each distance from the explosion to be determined. Since they can be combined with damage criteria (such as those shown by the PROBIT equations), they can be used to perform consequence analysis as the damage is shown in the same diagram as the overpressure, impulse and distance. Since damages suffered by buildings usually affect people inside, it is important to take them into account when performing consequence analysis. This is done in this paper, where diagrams and equations are presented to determine minor damage to buildings (broken windows, displacement of doors and window frames, tile displacement, etc.), major structural damage (cracks in walls, collapse of some walls) and collapse (the damage is so extensive that the building is partially or totally demolished). This paper completes the consequence analysis to humans outdoors shown by F.D. Alonso et al. [F. Diaz Alonso, E. Gonzalez Ferradas, T. Jimenez Sanchez, A. Miñana Aznar, J. Ruiz Gimeno, J. Martinez Alonso, Consequence analysis to determine the damage to humans from vapour cloud explosions using characteristic curves, J. Hazard. Mater., in press].
Revista Odonto Ciencia, Jul 14, 2008
Proceedings of the 2008 International Conference on Quantitative InfraRed Thermography, 2008
In the last decade, a new type of excitation has been successfully introduced in the field of the... more In the last decade, a new type of excitation has been successfully introduced in the field of thermographic nondestructive evaluation (NDE) for the detection of defects such as cracks or delaminations: the so called vibrothermography or thermosonics . In contrast to the more classical set-up in which the energy is delivered at the sample surface by optical means and the thermal waves propagate into the inner volume, in vibrothermographic arrangements the sample is mechanically excited by sonic or ultrasonic oscillations. The excitation is carried-out by coupling an ultrasonic transducer to the sample surface. In general, the propagation of the damped acoustic waves along the material converts mechanical energy into thermal energy, but in the vicinity of the defects the energy dissipation is bigger due to friction between the faces of the defect and/or stress concentration at the surrounding area. In metals, where the acoustical damping is relatively low, this mechanical excitation acts as a selective inner heat source, located at the defects, that diffuses inside the sample and can be detected as a temperature variation at its surface by means of an infrared (IR) camera.
Tetrahedron, 1999
The reaction of different chlorinated, brominated or iodinated materials, bearing or without a fu... more The reaction of different chlorinated, brominated or iodinated materials, bearing or without a functional group, with a mixture of nickel(II) chloride dihydrate, an excess of lithium powder and a catalytic amount of 4,4'-ditert-butylbiphenyl (DTBB) (5 mol%) in THF at room temperature, leads to the formation of the corresponding products resulting from a halogen/hydrogen exchange. The use of deuterium oxide instead of water in the nickel salt allows the corresponding deuteration. This methodology does not work with fluorinated materials.
Learner Satisfaction When Applying an Instructional Model in e-Learning - An Experimental Study
Formaci�n de sedimentos durante la hidrodesintegraci�n de residuos del petr�leo
Journal of Clinical Periodontology, 2014
analysis of single crowns supported by short (<10 mm) implants in the posterior region.
La genética del cangrejo de río en España
Quercus, 2006
Actividad arqueológica en Navarra 1988-1989
Trabajos De Arqueologia Navarra, 1991
... Autores: Ignacio Barandiarán Maestu, Ana Cava Almuzara, Jesús Sesma Sesma, Fernando Gracia Al... more ... Autores: Ignacio Barandiarán Maestu, Ana Cava Almuzara, Jesús Sesma Sesma, Fernando Gracia Alonso, Mikel Ramos Aguirre, María Inés Tabar Sarrías, María del Pilar Utrilla Miranda, Gloria Munilla Cabrillana, Javier Armendáriz Martija, María Angeles Mezquiriz Irujo ...
Environ Sci Pollut Res, 2011
Introduction The change in light intensity that takes place when an ambient air sample is drawn i... more Introduction The change in light intensity that takes place when an ambient air sample is drawn into the detection chamber of a chemiluminescence monitor generates changes in the concentrations of several species, such as NO 2 , NO and O 3 . Although this phenomenon has been known for several decades, there is still no commonly accepted approach on when or how to correct for it in NO 2 and O 3 readings. Discussion In this work, we have assessed the expanded uncertainty of two chemiluminescence NO x analysers commercially available according to EN 14211:2005, with the aim of establishing the maximum allowable standard uncertainty due to the reaction between NO and O 3 in the sampling system.
Proyecto PARTIC : memoria : 2003-2004
J Amer Coll Surgeons, 2009
BACKGROUND-Protein absorption occurs as di-and tri-peptides via H+/peptide cotransporter-1 (PepT1).
X-ray photoelectron spectroscopy characterization of high dose carbon-implanted steel and titanium alloys
Applied Surface Science, 1999
A study has been made of the depth dependence of the atomic fraction and chemical bonding states ... more A study has been made of the depth dependence of the atomic fraction and chemical bonding states of AISI 440C martensitic stainless steel and Ti–6Al–4V alloy implanted with 75 keV C+ at very high doses (above 1018 ions cm−2), by means of X-ray photoelectron spectroscopy combined with an Ar+ sputtering. A Gaussian-like carbon distribution was observed on both materials at
Preparation, characterization and evaluation of Maya crude hydroprocessing catalysts
Catalysis Today, Nov 1, 2004
Quality of Life Research an International Journal of Quality of Life Aspects of Treatment Care and Rehabilitation, Mar 1, 2005
Objective: To assess the impact of PD on informal caregivers of patients and identify the main fa... more Objective: To assess the impact of PD on informal caregivers of patients and identify the main factors related to caregiver strain. Patients and methods: Pairs of PD patients and their caregivers. Evaluation by neurologists included the Hoehn and Yahr, Schwab and England, UPDRS (parts 1-3), ISAPD, and Pfeiffer's SPMSQ rating scales. Patients completed the Euro-QoL 5D, PDQ-8, and Hospital Anxiety and Depression Scale. The SQLC was used to assess caregivers' quality of life (QoL), with caregivers, in turn, applying the Euro-QoL and PDQ-8 to assess patients' health-related quality of life (HRQoL). Multiple linear regression models were fitted to ascertain factors linked to the SQLC. Results: Significant correlations were in evidence between the following scores: SQLC and clinical rating scales and SQLC and patients' HRQoL. Based on multiple regression analysis, patients' functional state (ADL) proved to be the main predictor of caregivers' QoL. Self-and caregiver-assessed patients' HRQoL also proved to be a relevant factor. Conclusions: (1) Patients' functional state was significantly related to caregivers' psychosocial burden; (2) patients' HRQoL proved to be an additional factor linked to caregiver QoL; (3) improvement of patient disability and HRQoL might alleviate caregiver strain.
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Papers by Fernando Alonso