Search Results - (Author, Cooperation:A. Jimenez)

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  1. 1
    Staff View
    Publication Date:
    2018-07-17
    Publisher:
    The American Society for Pharmacology and Experimental Therapeutics
    Print ISSN:
    0022-3565
    Electronic ISSN:
    1521-0103
    Topics:
    Medicine
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Staff View
    Publication Date:
    2018-03-13
    Publisher:
    Wiley-Blackwell
    Electronic ISSN:
    1942-2466
    Topics:
    Geography
    Geosciences
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  3. 3
    Staff View
    Publication Date:
    2018-09-04
    Publisher:
    MDPI Publishing
    Electronic ISSN:
    1424-8220
    Topics:
    Chemistry and Pharmacology
    Electrical Engineering, Measurement and Control Technology
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  4. 4
    Latest Papers from Table of Contents or Articles in Press
  5. 5
    J. Rogel-Salazar, H. A. Jiménez-Romero, and S. Chávez-Cerda
    American Physical Society (APS)
    Published 2018
    Staff View
    Publication Date:
    2018-05-04
    Publisher:
    American Physical Society (APS)
    Print ISSN:
    1050-2947
    Electronic ISSN:
    1094-1622
    Topics:
    Physics
    Keywords:
    Errata
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  6. 6
  7. 7
    Staff View
    Publication Date:
    2018-02-09
    Publisher:
    American Physical Society (APS)
    Print ISSN:
    1050-2947
    Electronic ISSN:
    1094-1622
    Topics:
    Physics
    Keywords:
    Atomic and molecular processes in external fields, including interactions with strong fields and short pulses
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  8. 8
    Latest Papers from Table of Contents or Articles in Press
  9. 9
    Staff View
    Publication Date:
    2018-03-16
    Publisher:
    American Chemical Society (ACS)
    Print ISSN:
    1528-7483
    Electronic ISSN:
    1528-7505
    Topics:
    Chemistry and Pharmacology
    Geosciences
    Physics
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  10. 10
    Staff View
    Publication Date:
    2018-06-15
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Geosciences
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Computers, Mathematics
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  11. 11
    Tejada, J. A. Jiménez ; Godoy, A. ; Palma, A. ; Cartujo, P.

    [S.l.] : American Institute of Physics (AIP)
    Published 2001
    Staff View
    ISSN:
    1089-7550
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    A theory for the current noise associated with carrier generation and recombination in the space-charge region of p–n junctions is presented. We propose a noise model based on the response of the electric field to fluctuations of the trapped charge in this region, and make use of a collective transport-noise theory. The effects of the fluctuations of the space-charge region borders due to the fluctuations of the trapped charge are now taken into account. This new contribution is negligible when generation–recombination current governs the diode current. However, it is significant when diffusion current dominates, allowing the analytical study of generation–recombination noise to be extended to wider ranges of bias and temperature. Experimental results at low and high temperatures are explained with our theory. Empirical formulas of current noise density are also explained according to this complete theory of current noise calculation. © 2001 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  12. 12
    Staff View
    ISSN:
    1365-4632
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Medicine
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  13. 13
    Staff View
    ISSN:
    1432-1386
    Keywords:
    Innovation ; Technology ; Master equation ; Survival probability ; Evolution ; O3
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Economics
    Notes:
    Abstract Technological innovations have been investigated by means of substitution and diffusion as well as evolution models, each of them dealing with different aspects of the innovation problem. In this paper we follow the well known research traditions on self-organisation models of complex systems. For the first time in the literature we show the existence of a specific niche effect, which may occur in the first stage of establishment of a new technology. Using a stochastic Master equation approach, we obtain analytical expressions for the survival probabilities of a new technology in smaller or larger ensembles. As a main result we demonstrate how a hyperselection situation might be removed in a stochastic picture and thresholds against the prevailing of a new technology in a step-by-step process can be overcome.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  14. 14
    Staff View
    ISSN:
    1573-6776
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Process Engineering, Biotechnology, Nutrition Technology
    Notes:
    Abstract In this work we studied the production of betalains by suspension culture of Beta vulgaris. The B. vulgaris grew at a doubling time of 4.8 days. The betalains production was found to be not-growth related. The culture's response to different carbon sources was investigated. Best growth and pigment production was obtained with sucrose.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  15. 15
    Staff View Fulltext
    Publication Date:
    2021-09-23
    Description:
    Background: Sedentary behaviour (SB) has been identified as an important mortality risk factor. Health organizations have recognised SB as a public health challenge with major health, social, and economic consequences. Researchers have alerted the need to develop specific strategies, to monitor, prevent, and reduce SB. However, there is no systematic analysis of the SB changes in European Union adults. We aimed to examine SB changes between 2002 and 2017 in the European Union (EU) adult population. Methods: SB prevalence (〉4h30mins of sitting time/day) of 96,004 adults as a whole sample and country-by-country was analysed in 2002, 2005, 2013, and 2017 of the Sport and Physical Activity EU Special Eurobarometers’ data. The SB question of a modified version of the International Physical Activity Questionnaire was considered. SB prevalence between countries and within years was analysed with a χ2 test, and SB between genders was analysed with the Z-Score test for two population proportions. Results: An association between the SB prevalence and the years was found (p 〈  0.001), with increases for the whole sample (2002: 49.3%, 48.5–50.0 95% confidence interval (CI); 2017: 54.5%, 53.9–55.0 95% CI) and men (2002: 51.2%, 50.0–52.4 95% CI; 2017: 55.8%, 55.0–56.7 95% CI) and women (2002: 47.6%, 46.6–48.7 95% CI; 2017: 53.4%, 52.6–54.1 95% CI) separately. The adjusted standardised residuals showed an increase in the observed prevalence versus the expected during 2013 and 2017 for the whole sample and women and during 2017 for men. For all years, differences were observed in the SB prevalence between countries for the whole sample, and men and women separately (p 〈  0.001). Besides, the SB prevalence was always higher in men versus women in the overall EU sample (p 〈  0.001). Conclusions: SB prevalence increased between 2002 and 2017 for the EU as a whole and for both sexes separately. Additionally, differences in SB prevalence were observed for all years between EU countries in the whole sample and both sexes separately. Lastly, SB was consistently higher in men than women. These findings reveal a limited impact of current policies and interventions to tackle SB at the EU population level.
    Keywords:
    Medicine and health ; Medizin und Gesundheit ; ZA3886 v1.0.1: Eurobarometer 58.2 (Oct-Dec 2002); ZA4415 v1.0.1: Eurobarometer 64.3 (Nov-Dec 2005); ZA5913 v2.0.0: Eurobarometer 81.2 (March 2014); ZA7482 v1.0.0: Eurobarometer 89.2 (2018); sitting; sedentarism ; Medizin, Sozialmedizin ; Medicine, Social Medicine ; national politics ; EU ; sports ; adult ; mortality ; twenty-first century ; Eurobarometer ; health behavior ; physical exercise ; Gesundheitsverhalten ; Erwachsener ; Sport ; körperliche Bewegung ; 21. Jahrhundert ; Sterblichkeit ; nationale Politik
    Type:
    journal article, Zeitschriftenartikel
    SSOAR
  16. 16
    Staff View Fulltext Fulltext
    Publication Date:
    2021-08-30
    Description:
    Background: The World Health Organization (WHO) considers physical inactivity (PIA) as a critical noncommunicable factor for disease and mortality, affecting more women than men. In 2013, the WHO set a 10% reduction of the PIA prevalence, with the goal to be reached by 2025. Changes in the 2013–2017 period of physical inactivity prevalence in the 28 European Union (EU) countries were evaluated to track the progress in achieving WHO 2025 target. Methods: In 2013 and 2017 EU Special Eurobarometers, the physical activity levels reported by the International Physical Activity Questionnaire of 53,607 adults were analyzed. Data were considered as a whole sample and country-by-country. A χ2 test was used to analyze the physical inactivity prevalence (%) between countries, analyzing women and men together and separately. Additionally, PIA prevalence was analyzed between years (2013–2017) for the overall EU sample and within-country using a Z-Score for two population proportions. Results: The PIA prevalence increased between 2013 and 2017 for the overall EU sample (p 〈  0.001), and for women (p = 0.04) and men (p 〈 0.001) separately. Data showed a higher PIA prevalence in women versus men during both years (p 〈  0.001). When separately considering changes in PIA by gender, only Belgium’s women and Luxembourg’s men showed a reduction in PIA prevalence. Increases in PIA prevalence over time were observed in women from Austria, Croatia, Germany, Lithuania, Malta, Portugal, Romania, and Slovakia and in men from Bulgaria, Croatia, Czechia, Germany, Italy, Lithuania, Portugal, Romania, Slovakia, and Spain. Conclusions: PIA prevalence showed an overall increase across the EU and for both women and men between 2013 and 2017, with higher rates of PIA reported for women versus men during both years. PIA prevalence was reduced in only Belgium’s women and Luxembourg’s men. Our data indicate a limited gender-sensible approach while tacking PIA prevalence with no progress reaching global voluntary reductions of PIA for 2025.
    Keywords:
    Sozialwissenschaften, Soziologie ; Social sciences, sociology, anthropology ; Physical inactivity; Global action plan; European Union; Special Eurobarometer 412; Special Eurobarometer 472 ; Gesundheitspolitik ; Health Policy ; Gesundheitsverhalten ; körperliche Bewegung ; geschlechtsspezifische Faktoren ; WHO ; Eurobarometer ; EU ; Gesundheit ; health behavior ; physical exercise ; gender-specific factors ; health ; 11000
    Type:
    Zeitschriftenartikel, journal article
    SSOAR
  17. 17
    Staff View Fulltext Fulltext
    Publication Date:
    2022-04-25
    Description:
    Background: Public health organizations have been alerted to the high levels of sedentary behaviour (SB) among adolescents as well as to the health and social consequences of excess sedentary time. However, SB changes of the European Union (EU) adolescents over time have not been reported yet. This study aimed to identify SB of the EU adolescents (15–17 years) in four-time points (2002, 2005, 2013 and 2017) and to analyse the prevalence of SB according to the sex. Methods: SB of 2542 adolescents (1335 boys and 1207 girls) as a whole sample and country-by-country was analysed in 2002, 2005, 2013, and 2017 using the Sport and Physical Activity EU Special Eurobarometers’ data. SB was measured using the sitting time question from the short version of the International Physical Activity Questionnaire (IPAQ), such that 4h30min of daily sitting time was the delineating point to determine excess SB behaviour (≥4h30min of sitting time) or not (≤4h30min of sitting time). A χ2 test was used to compare the prevalence of SB between survey years. Furthermore, SB prevalence between sexes was analysed using a Z-Score test for two population proportions. Results: The prevalence of SB among EU adolescents across each of the four survey years ranged from 74.2 and 76.8%, rates that are considered high. High levels of SB were also displayed by both sexes (girls: 76.8 to 81.2%; boys: 71.7 to 76.7%). No significant differences in the prevalence of SB among years (p 〉 0.05) were found for the whole sample, and for either girls or boys. Also, no significant differences in the prevalence of SB between girls and boys were found. Conclusion: The SB prevalence in European adolescents is extremely high (76.8% in 2017) with no differences between girls and boys. No significant improvements have been seen between 2002 and 2017. Eurobarometer should increase the adolescents’ sample to make possible benchmarking comparisons among the EU countries and extend the survey to the younger children population.
    Keywords:
    Sozialwissenschaften, Soziologie ; Medizin und Gesundheit ; Social sciences, sociology, anthropology ; Medicine and health ; Sedentarism; Sitting; National policies; ZA3886: Eurobarometer 58.2 (Oct-Dec 2002); ZA4415: Eurobarometer 64.3 (Nov-Dec 2005); ZA5877: Eurobarometer 80.2 (2013); ZA6939: Eurobarometer 88.4 (2017) ; Gesundheitspolitik ; Medizin, Sozialmedizin ; Health Policy ; Medicine, Social Medicine ; gesundheitliche Folgen ; körperliche Bewegung ; Jugendlicher ; Europa ; EU ; nationale Politik ; Jugend ; Gesundheitsverhalten ; Eurobarometer ; health consequences ; physical exercise ; adolescent ; Europe ; national politics ; youth ; health behavior ; 50100 ; 11000
    Type:
    Zeitschriftenartikel, journal article
    SSOAR
  18. 18
    Staff View Fulltext Fulltext
    Publication Date:
    2021-07-15
    Description:
    Background: Physical inactivity (PIA) is a mortality risk factor defined as performing lower levels of physical activity than recommended by the World Health Organization (WHO). After 2002, the WHO released the WHA55.23 Resolution and the Global Strategy which produced several changes in policymaking, but with no subsequent analyses of the impact of these changes in European Union (EU) policymaking while examining PIA prevalence. Methods: PIA of 31,946 adults as a whole sample and country-by-country were analyzed in the 2002 and 2005 EU Special Eurobarometers. PIA prevalence between countries was performed with the χ2 test and PIA between both years and between genders was analyzed with the Z-Score test for two population proportions. A retrospective analysis of national plans was performed to interpret the suitability of such policy documents, considering changes in PIA prevalence. Results: Differences in PIA prevalence were observed between countries (p 〈  0.001) and years (p 〈  0.001) for the whole sample and men and women separately. Within-country samples showed no differences for Denmark, Finland, Ireland, Italy, Luxemburg, Portugal, and Spain (p 〉 0.05). When considering gender, there were no gender reductions in subsamples for Denmark, Finland, Ireland, Portugal, Spain, and United Kingdom, neither in Luxemburg for men, nor in France and Italy for women. When analyzing gender differences across the entire sample, PIA was higher in women than men for both years (p 〈  0.001). Greece and Luxemburg did not release national plans for promoting physical activity. Conclusions: While large differences in PIA prevalence between EU countries prevailed, the overall PIA descended between both years for the whole sample, men, and women. While this points out a general suitability of policymaking for reducing PIA, not all countries reported reductions in PIA for men, women, or both genders. Also, PIA levels were higher for women in both years, suggesting a less than optimal policy implementation, or lack of women-specific focus across the EU. This analysis helps to identify the strengths and weaknesses of PIA policymaking in the EU and provides researchers with targeted intervention areas for future development.
    Keywords:
    Sozialwissenschaften, Soziologie ; Social sciences, sociology, anthropology ; Physical inactivity; National guidelines; Policy documents; Policy delivery; ZA3886: Eurobarometer 58.2 (Oct-Dec 2002); ZA4415: Eurobarometer 64.3 (Nov-Dec 2005) ; Gesundheitspolitik ; Health Policy ; körperliche Bewegung ; Richtlinie ; WHO ; geschlechtsspezifische Faktoren ; EU ; Erwachsener ; vergleichende Forschung ; Public Health ; Politikumsetzung ; Eurobarometer ; physical exercise ; directive ; gender-specific factors ; adult ; comparative research ; public health ; health policy ; policy implementation ; 11000
    Type:
    Zeitschriftenartikel, journal article
    SSOAR
  19. 19
    Staff View Fulltext
    Publication Date:
    2023-12-07
    Description:
    Background: The lack of systematic factors affecting physical inactivity (PIA) challenges policymakers to implement evidence-based solutions at a population level. The study utilizes the Eurobarometer to analyse PIA-modifiable variables. Methods: Special Eurobarometer 412 physical activity (PA) data were analysed (n=18336), including 40 variables along with the International PA Questionnaire. PIA was used as the dependent variable. Variables considered were alternatives to car, places, reasons and barriers to engaging in PA, memberships to clubs and categorical responses about the agreement extent with the area, provision of activities and local governance statements. Logistic regression was used to identify variables contributing to PIA. Beta values (β), standard errors, 95% confidence intervals, the exponentiation for odds ratio and Cox & Snell and Nagelkerke R2 were indicated. Results: The resulting model correctly identified 10.7% inactives and 96.9% of actives (R2 of Nagelkerke: 0.153). Variables contributing to the detection of PIA were (P ≤ 0.01): having a disability or an illness, not having friends to do sport with, lacking motivation or interest in and being afraid of injury risk. Additionally, totally agreeing, tend to agree and tend to disagree regarding the extent of local providers offering enough opportunities to be more active also contributed to the model. Conclusions: The model reported a limited ability to detect modifiable factors affecting PIA, identifying a small percentage of inactive individuals correctly. New questions focused on understanding inactive behaviour are needed to support the European PA public health agenda.
    Keywords:
    Sozialwissenschaften, Soziologie ; Social sciences, sociology, anthropology ; Eurobarometer 80.2 (2013) (ZA5877) ; Gesundheitspolitik ; Erhebungstechniken und Analysetechniken der Sozialwissenschaften ; Health Policy ; Methods and Techniques of Data Collection and Data Analysis, Statistical Methods, Computer Methods ; Eurobarometer ; körperliche Bewegung ; Europa ; Modell ; Bewertung ; Sport ; physical exercise ; Europe ; model ; evaluation ; sports
    Type:
    Zeitschriftenartikel, journal article
    SSOAR
  20. 20
    Staff View
    Publication Date:
    2018-03-21
    Publisher:
    MDPI Publishing
    Electronic ISSN:
    1996-1944
    Topics:
    Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by:
    Latest Papers from Table of Contents or Articles in Press