A5002331129- Atomic and Molecular Physics
- Advanced Chemical Physics Studies
- Molecular Spectroscopy and Structure
- Laser-induced spectroscopy and plasma
- Astro and Planetary Science
- Atmospheric Ozone and Climate
- Mass Spectrometry Techniques and Applications
- Radioactivity and Radon Measurements
- Planetary Science and Exploration
- Radioactive contamination and transfer
- Geochemistry and Geologic Mapping
- Organic and Inorganic Chemical Reactions
- Educational methodologies and cognitive development
- Spectroscopy and Laser Applications
- Science Education and Pedagogy
- Educational Research and Science Teaching
- Nuclear physics research studies
- Isotope Analysis in Ecology
- Health and Medical Education
- X-ray Spectroscopy and Fluorescence Analysis
- Chemical Thermodynamics and Molecular Structure
- Soil Carbon and Nitrogen Dynamics
- Space Science and Extraterrestrial Life
- Higher Education Teaching and Evaluation
- Ionosphere and magnetosphere dynamics
Universidad de Valladolid
2009-2022
Queen's University Belfast
1999-2000
Universidad Nacional Autónoma de México
1999
Université de Lille
1993
Centre National de la Recherche Scientifique
1993
The vibrational spectra of the nucleic acid bases adenine, thymine, guanine, and cytosine are calculated in frame density functional theory (DFT). In particular we use Kohn–Sham scheme with gradient corrections for exchange correlation to determine normal modes, frequencies, intensities. DFT results found be good agreement experiment. Our computations provide assignments IR, Raman, neutron inelastic scattering spectroscopies; yield characteristic fingerprints each compound its identification...
Abstract The hydrogen bonds involving sulfur in the furfuryl mercaptan monohydrate are compared with interactions originating from hydroxyl group alcohol. dimers water were created a supersonic jet expansion and characterized using microwave spectroscopy supporting molecular orbital calculations. In alcohol–water, single isomer is observed, which molecule forms an insertion complex two simultaneous to alcohol (O−H⋅⋅⋅O w ) ring oxygen (O −H⋅⋅⋅O r ). When replaced by thiol mercaptan–water,...
This paper is a study of the radiological impact coal-fired power plant in Spain. Activity concentrations six natural radionuclides were determined coal, ash, mine wastes and sediments by gamma-ray spectrometry. The average activity 238U, 226Ra, 224Ra, 210Pb, 232Th 40K coal 24, 30, 28, 41, 23 242 Bq kg−1 ash 103, 128, 101, 124, 88 860 kg−1, respectively. enrichment factor, radium equivalent alpha index sample have been estimated. For five waste pile samples, absorbed dose rate was higher...
Oscillator strengths for and transitions in the silicon sequence (KVI - XeXLI) have been calculated using Relativistic Quantum Defect Orbital (RQDO) method, with without explicit inclusion of core-valence correlation, multiconfigurational Dirac-Fock (MCDF) approach. Our f-values, which are interest astrophysics fusion plasma research, compared other theoretical results cases these available.
Abstract A curricular Delphi study was carried out to help improve and develop scientific training for secondary school students in Spain. Using the method, authors analyzed degree of consensus among more than 100 stakeholders' answers question, “What aspects science education are considered desirable a (Spanish) citizen?” From their answers, identified set five “concepts.” Of these, most relevant “Science related environmental issues human health, through use strategies based on...
Relativistic quantum defect orbital calculations of transition probabilities for E2 and M1 transitions in the boron sequence have been performed. The present data are analysed on grounds other theoretical available literature. Regularities intensities along isoelectronic each line also tested. analysis forbidden lines spectrum is important study plasma astrophysical objects fusion devices.
Relativistic quantum defect orbital (RQDO) calculations have been performed with and without taking explicit account of the core-valence correlation oscillator strengths for dipole-allowed fine-structure 3p3 4So-3p2(3P)3d 4P transition array a number P-like ions (Cl III-La XLIII). The present f-values are analysed on basis other theoretical data available in literature. Regularities intensities along isoelectronic sequence each line multiplet also tested.
Relativistic Quantum defect Orbital (RQDO) and Multiconfiguration Dirac-Fock (MCDF) calculations of oscillator strengths for the transition array Br III–La XXV As-like ions have been performed. For most studied transitions no previous data found in literature.
Relativistic Quantum Defect Orbital (RQDO) calculations of transition probabilities for E2 and M1 forbidden in the potassium sequence have been performed. Intensities higher ions are reported, to our knowledge, first time, as they potentially important study plasma astrophysical objects fusion devices.
Abstract The Raman laser spectrometer (RLS) instrument onboard the Rosalind Franklin rover of ExoMars 2022 mission will analyze powdered samples on Mars to search for traces life. To prepare mission, RLS scientific team has developed Simulator (RLS Sim), a flexible model that operates similarly actual instrument, both in laboratory and field conditions, while also emulating operational constraints terms sample distribution are relevant analysis. This system can operate autonomously perform...
The spectrum of Zr III has been observed in the chemically peculiar B-type star Chi Lupi with Goddard high-resolution spectrograph on Hubble space telescope. Oscillator strengths for dipole-allowed fine-structure transitions between levels belonging to 4d2 and 4dnl (n = 4-6 l 1-3) configurations, which may be useful abundance determinations, have calculated LSJ-coupling scheme using relativistic quantum-defect orbital method, without explicit account core-valence correlation. For some...
The analysis of forbidden lines, such as E2 and M1, in the atomic spectra emitted by certain ions is important for study plasma astrophysical objects fusion devices. Transition rates between levels that belong to aluminium sequence have been calculated with Relativistic Quantum Defect Orbital (RQDO) method. present data are tested comparison other theoretical available literature, regularity transition intensities along isoelectronic both (E2 M1) well their competition, also analysed.
Abstract The analysis of forbidden lines, such as E2 and M1, in the atomic spectra emitted by certain ions is important for study plasma astrophysical objects fusion devices. Atomic data, wavelengths transition rates 4p 3/2 → 1/2 emission lines gallium sequence have been calculated with Relativistic Quantum Defect Orbital (RQDO) method. present results are tested comparison other theoretical values available literature. regularity intensities along isoelectronic both (E2 M1) well their...
The main purpose of this work is to show the influence vegetation in storage and stabilisation organic carbon semi-arid Juniperus thurifera (J. thurifera) forest soil central Spain. variability matter with factors such as sex, trunk diameter protection canopy tree has been analysed. distribution (SOC) into different fractions also determined, order estimate stability matter. results that SOC concentration no dependence on sex tree, but it increases under canopy. This study found J. a high...
Resumen: La Competencia Científica evaluada por las pruebas PISA requiere la confluencia entre los tipos de conocimiento y subcompetencias evaluadas en ellas, a fin analizar cómo están capacitados estudiantes para aportar efectivamente sociedad.De esta manera, resultados prueba trienal pueden dar cuenta del desarrollo un determinado país.Por tal motivo, son necesarios estudios que profundicen cada subcompetencia clarifiquen sus componentes, presenten fundamentos teóricos con gran cantidad...