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La Universidad de Málaga (UMA) desde 2011 tiene acreditada la formación en protección radiológica, con homologación del Consejo de Seguridad Nuclear (CSN). Desde este año, hasta nuestros días se han impartido un total de 31 cursos. La... more
La Universidad de Málaga (UMA) desde 2011 tiene acreditada la formación en protección radiológica, con homologación del Consejo de Seguridad Nuclear (CSN). Desde este año, hasta nuestros días se han impartido un total de 31 cursos. La temática de los cursos impartidos han sido: director y operador de instalaciones de radiodiagnóstico médico; supervisor y operador de instalaciones radiactivas (radioterapia, medicina nuclear, laboratorio de fuentes no encapsuladas, control de procesos y técnicas analíticas), y de isótopos en el medio marino. Se han formado un total de 397 alumnos, con un 93 % de aprobados, profesionales de la enfermería, médicos, podólogos, veterinarios, odontólogos y auxiliares de higiene bucodental. Los cursos de formación constan de una parte teórica impartida por profesores del departamento de radiología y medicina física, del laboratorio de protección radiológica del CIMES y del servicio de instalación radiactiva; y de otra práctica, desarrollada en los laborator...
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To propose national diagnostic reference levels (DRLs) for interventional radiology and to evaluate the impact of the procedural complexity on patient doses. Eight interventional radiology units from Spanish hospitals were involved in... more
To propose national diagnostic reference levels (DRLs) for interventional radiology and to evaluate the impact of the procedural complexity on patient doses. Eight interventional radiology units from Spanish hospitals were involved in this project. The participants agreed to undergo common quality control procedures for X-ray systems. Kerma area product (KAP) was collected from a sample of 1,649 procedures. A consensus document established the criteria to evaluate the complexity of seven types of procedures. DRLs were set as the 3rd quartile of KAP values. The KAP (3rd quartile) in Gy cm(2) for the procedures included in the survey were: lower extremity arteriography (n = 784) 78; renal arteriography (n = 37) 107; transjugular hepatic biopsies (THB) (n = 30) 45; biliary drainage (BD) (n = 314) 30; uterine fibroid embolization (UFE) (n = 56) 214; colon endoprostheses (CE) (n = 31) 169; hepatic chemoembolization (HC) (n = 269) 303; femoropopliteal revascularization (FR) (n = 62) 119; ...
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The relationship between the particulate matter in the atmosphere of Malaga and the origin of air masses with special attention to African intrusions was analyzed. The concentrations of PM10 and the activities of some radionuclides ((7)Be... more
The relationship between the particulate matter in the atmosphere of Malaga and the origin of air masses with special attention to African intrusions was analyzed. The concentrations of PM10 and the activities of some radionuclides ((7)Be and (210)Pb) as tracers of these intrusions are discussed. The origin of these radiotracers is completely different. (210)Pb is a good tracer of air masses traveling close to the ground and come from inland areas. On the other hand, the production of (7)Be is very low in the vicinity of the Earth's surface, and increases with altitude, making it a great tracer of stratospheric air masses in the troposphere. Studies of radionuclide activities in aerosol particles provide a means for evaluating the integrated effects of transport and meteorology on the atmospheric loadings of substances with different sources. Measurements of aerosol mass concentration and specific activities of (7)Be and (210)Pb in aerosols at Malaga (36° 43' 40″ N; 4° 28' 8″ W) for the period 2009-2011 were used to obtain the relationships between radionuclide activities and airflow patterns by comparing the data grouped by air mass trajectory. The average concentration values of (7)Be and (210)Pb over the 3-year period have been found to be 5.05 and 0.55 mBq m(-3), respectively, with mean aerosol mass concentration of 53.6 μg m(-3). Taking into account the outbreaks of the daily values limits of PM10 in the study period (2009-2011), the origin of air masses is studied to explain three different situations of both radionuclides (7)Be and (210)Pb: 1) high concentrations of (7)Be and low concentrations of (210)Pb; 2) high concentrations of (210)Pb and low concentrations of (7)Be and 3) high concentrations of (7)Be and (210)Pb.
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Measurements of gross-alpha and gross-beta activities were made every week during the years 1992-1997 for airborne particulate samples collected using air filters at a clear site. The data are sufficiently numerous to allow the... more
Measurements of gross-alpha and gross-beta activities were made every week during the years 1992-1997 for airborne particulate samples collected using air filters at a clear site. The data are sufficiently numerous to allow the examination of variations in time and by these measurements to establish several features that should be important in understanding any trends of atmospheric radioactivity. Two models were used to predict the gross-alpha and gross-beta activities. A good agreement between the results of these models and the measurements was highlighted.
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... On the other hand, 210 Pb in air provides information on continental aerosols in the lower troposphere (Rangarajan et al., 1986), to estimate mean atmospheric residence time of aerosols, transport and removal processes ([Tokieda et... more
... On the other hand, 210 Pb in air provides information on continental aerosols in the lower troposphere (Rangarajan et al., 1986), to estimate mean atmospheric residence time of aerosols, transport and removal processes ([Tokieda et al., 1996] and [Dueñas et al., 2004]). ...
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... All rights reserved Variations of 7Be and 210Pb (1992-1999) In Air At a Sampling Station On The Mediterranean Coast C. DUENAS, MC FERNANDEZ, J. CARRETERO ... AM GM DF SI) Max Min CV Be-7 Pb-210 4.16 0.54 4.07 0.52 1.4 0.6 0.15 0.026... more
... All rights reserved Variations of 7Be and 210Pb (1992-1999) In Air At a Sampling Station On The Mediterranean Coast C. DUENAS, MC FERNANDEZ, J. CARRETERO ... AM GM DF SI) Max Min CV Be-7 Pb-210 4.16 0.54 4.07 0.52 1.4 0.6 0.15 0.026 6.0 0.92 2.5 0.28 20.4 27.3 ...
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ABSTRACT 222Rn concentrations in the air in Nerja cave (Spain) (3° 52′35′′W 36° 43′50′′N) were measured by continuous monitoring using Alpha-Guard, Genitron instrument equipment. The 222Rn measurements were carried out for a complete... more
ABSTRACT 222Rn concentrations in the air in Nerja cave (Spain) (3° 52′35′′W 36° 43′50′′N) were measured by continuous monitoring using Alpha-Guard, Genitron instrument equipment. The 222Rn measurements were carried out for a complete annual cycle in the different halls: Vestibule hall from July 2003 to June 2004, Ballet hall from July 2004 to June 2005 and Mirador hall from July 2005 to June 2006. Starting from the entrance of the cave we successively find the Vestibule hall, the Ballet hall and the Mirador hall. The range of 222Rn levels were of 8–627 Bq m−3 for the Vestibule hall, 28–575 Bq m−3 for the Ballet hall and 38–578 Bq m−3 for the Mirador. The aim of this study was to detect seasonal variation patterns of 222Rn concentrations. The seasonal variations of 222Rn concentrations are discussed in relation to various meteorological factors measured inside and outside the cave. The radiation exposure levels for workers and tourists with different equilibrium factors have been evaluated. The radiation exposure levels for workers and tourists only represent a low percentage of the exposure guides for the general population.Highlights► The aim of the study was to detect seasonal variation of 222Rn concentrations. ► 222Rn concentrations in the air-cave were measured by continuous monitoring. ► The 222Rn measurements were carried out in the different halls of the cave. ► The radiation exposure levels for workers and tourists have been evaluated.
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The bulk gross alpha, gross beta and (7)Be depositional fluxes were measured in Málaga (36.7 degrees N, 4.5 degrees W), a coastal Mediterranean station in the south of Spain for one whole year. In order to quantify the local variation of... more
The bulk gross alpha, gross beta and (7)Be depositional fluxes were measured in Málaga (36.7 degrees N, 4.5 degrees W), a coastal Mediterranean station in the south of Spain for one whole year. In order to quantify the local variation of deposition rates, we have analysed the monthly results from two deposition collectors: a "pot "collector with a continuous water-covered surface and a "funnel" collector. In general, the alpha and beta depositional fluxes from the funnel collector were approximately two times lower than the pot collector. Whereas for the cosmogenic (7)Be, the depositional flux of (7)Be from funnel collector was also approximately two times lower than the pot collector. A good correlation of the depositional flux of (7)Be has been obtained from both collectors.
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Phosphogypsum (PG) is a waste product of the phosphoric acid production process and contains, generally, high activity concentrations of uranium series radionuclides. It is stored in piles formed over the last 40 years close to the town... more
Phosphogypsum (PG) is a waste product of the phosphoric acid production process and contains, generally, high activity concentrations of uranium series radionuclides. It is stored in piles formed over the last 40 years close to the town of Huelva (Southwest of Spain). The very broad expanse of the PG piles (about 1200 ha) produces a local, but unambiguous, radioactive impact to their surroundings. In 1992, the regional government of Andalusia restored an area of 400 ha by covering it with a 25-cm thick layer of natural soil and, currently, there is an additional zone of 400 ha in course of restoration (unrestored) and the same area of active PG stacks. Due to the high activity concentration of (226)Ra in active PG stacks (average 647 Bq kg(-1)), a significant exhalation of (222)Rn could be produced from the surface of the piles. Measurements have been made of (222)Rn exhalation from active PG stacks and from restored and unrestored zones. The (222)Rn exhalation from unrestored zones is half of that of the active PG stacks. Following restoration, the (222)Rn exhalation is approximately eight times lower than the active PG stacks. The activity concentrations of natural radionuclides ((226)Ra, (40)K, (232)Th) in the mentioned zones have been determined. This study was also conducted to determine the effect of (226)Ra activity concentration on the (222)Rn exhalation, and a good correlation was obtained between the (222)Rn exhalation and (226)Ra activity, porosity and density of soil.
Research Interests: Soil, Spain, Biological Sciences, Phosphorus, Environmental Sciences, and 14 morePorosity, Environmental Radioactivity, Radon, CHEMICAL SCIENCES, Radiation Monitoring, Production Process, Thorium, Fertilizers, Industrial Waste, Phosphoric acid, Phosphoric Acid, Radium, Environmental, and Calcium Sulfate
... On the other hand, 210 Pb in air provides information on continental aerosols in the lower troposphere (Rangarajan et al., 1986), to estimate mean atmospheric residence time of aerosols, transport and removal processes ([Tokieda et... more
... On the other hand, 210 Pb in air provides information on continental aerosols in the lower troposphere (Rangarajan et al., 1986), to estimate mean atmospheric residence time of aerosols, transport and removal processes ([Tokieda et al., 1996] and [Dueñas et al., 2004]). ...
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Ageing does affect functional capacity through several changes at the peripheral muscle level that impair the muscles capacity to produce energy and generate force. The skeletal muscle-specific isoform of AMP deaminase (AMPD) plays an... more
Ageing does affect functional capacity through several changes at the peripheral muscle level that impair the muscles capacity to produce energy and generate force. The skeletal muscle-specific isoform of AMP deaminase (AMPD) plays an important regulatory role in muscle metabolism and in determining energy charge. Since nearly 20 % of the general Caucasian population is heterozygous (CT) for the most common C34T mutation of the gene (AMPD1) encoding for this enzyme, it would be worthwhile to study if such a condition further increases the effects of ageing. Twenty-one women (61 - 80 yrs) served as subjects, and depending on the results of previous genotyping, were assigned to a group with the C34T mutation (heterozygous; n=4; mean+/-SEM age: 71+/-1 yrs) or with no mutation (n=17; 68+/-1 yrs). Several indices of maximal (peak oxygen uptake [V.O (2 peak)], peak power output) and submaximal endurance performance (ventilatory threshold, mechanical efficiency) and functional tests (one-mile walk test and a specific test of lower-body functional performance [sit-stand test]) were compared between the two groups. No significant differences were found in exercise capacity between both groups, e. g. V.O (2 peak) of 19.1+/-1.0 vs. 20.1+/-1.9 ml . kg (-1) . min (-1), V.O (2) at the VT of 11.9+/-0.6 vs. 12.9+/-1.0 ml . kg (-1) . min (-1), or time to complete the one-mile walk test (951+/-18 s vs. 962+/-61 s) and sit-stand test (9.9+/-0.2 vs. 9.2+/-0.2) (no mutation vs. C34T mutation, respectively). Although more research is necessary, it seems that the C34T mutation of the AMPD1, at least in heterozygous individuals, does not affect functional capacity in the elderly.
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ABSTRACT Measurements of gross-α and gross-β activities were made every week during the years 1992–1997 for airborne particulate samples collected using air filters at a clear site. The data are sufficiently numerous to allow the... more
ABSTRACT Measurements of gross-α and gross-β activities were made every week during the years 1992–1997 for airborne particulate samples collected using air filters at a clear site. The data are sufficiently numerous to allow the examination of variations in time and by these measurements to establish several features that should be important in understanding any trends of atmospheric radioactivity. Two models were used to predict the gross-α and gross-β activities. A good agreement between the results of these models and the measurements was highlighted.