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152. LOFAR insights into the epoch of reionization from the cross power spectrum of 21cm emission and galaxies

Author

Wiersma, R. P. C., Ciardi, B., Thomas, R. M., Harker, G. J. A., Zaroubi, S., Bernardi, G., Brentjens, M., de Bruyn, A. G., Daiboo, S., Jelic, V., Kazemi, S., Koopmans, L. V. E., Labropoulos, P., Martinez, O., Mellema, G., Offringa, A., Pandey, V. N., Schaye, J., Veligatla, V., Vedantham, H., and Yatawatta, S.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Using a combination of N-body simulations, semi-analytic models and radiative transfer calculations, we have estimated the theoretical cross power spectrum between galaxies and the 21cm emission from neutral hydrogen during the epoch of reionization. In accordance with previous studies, we find that the 21cm emission is initially correlated with halos on large scales (> 30 Mpc), anti-correlated on intermediate (~ 5 Mpc), and uncorrelated on small (< 3 Mpc) scales. This picture quickly changes as reionization proceeds and the two fields become anti-correlated on large scales. The normalization of the cross power spectrum can be used to set constraints on the average neutral fraction in the intergalactic medium and its shape can be a tool to study the topology of reionization. When we apply a drop-out technique to select galaxies and add to the 21cm signal the noise expected from the LOFAR telescope, we find that while the normalization of the cross power spectrum remains a useful tool for probing reionization, its shape becomes too noisy to be informative. On the other hand, for a Lyalpha Emitter (LAE) survey both the normalization and the shape of the cross power spectrum are suitable probes of reionization. A closer look at a specific planned LAE observing program using Subaru Hyper-Suprime Cam reveals concerns about the strength of the 21cm signal at the planned redshifts. If the ionized fraction at z ~ 7 is lower that the one estimated here, then using the cross power spectrum may be a useful exercise given that at higher redshifts and neutral fractions it is able to distinguish between two toy models with different topologies., Comment: 12 pages, 14 figures; MNRAS in press

Published
2012
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153. Prospects for detecting the 21cm forest from the diffuse intergalactic medium with LOFAR

Author

Ciardi, B., Labropoulos, P., Maselli, A., Thomas, R., Zaroubi, S., Graziani, L., Bolton, J. S., Bernardi, G., Brentjens, M., de Bruyn, A. G., Daiboo, S., Harker, G. J. A., Jelic, V., Kazemi, S., Koopmans, L. V. E., Martinez, O., Mellema, G., Offringa, A. R., Pandey, V. N., Schaye, J., Veligatla, V., Vedantham, H., and Yatawatta, S.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We discuss the feasibility of the detection of the 21cm forest in the diffuse IGM with the radio telescope LOFAR. The optical depth to the 21cm line has been derived using simulations of reionization which include detailed radiative transfer of ionizing photons. We find that the spectra from reionization models with similar total comoving hydrogen ionizing emissivity but different frequency distribution look remarkably similar. Thus, unless the reionization histories are very different from each other (e.g. a predominance of UV vs. x-ray heating) we do not expect to distinguish them by means of observations of the 21cm forest. Because the presence of a strong x-ray background would make the detection of 21cm line absorption impossible, the lack of absorption could be used as a probe of the presence/intensity of the x-ray background and the thermal history of the universe. Along a random line of sight LOFAR could detect a global suppression of the spectrum from z>12, when the IGM is still mostly neutral and cold, in contrast with the more well-defined, albeit broad, absorption features visible at lower redshift. Sharp, strong absorption features associated with rare, high density pockets of gas could be detected also at z~7 along preferential lines of sight., Comment: 12 pages, 13 figures. MNRAS, in press

Published
2012
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154. The JEM-EUSO Mission: Status and Prospects in 2011

Author

Collaboration, The JEM-EUSO, Adams Jr, J. H., Ahmad, S., Albert, J. -N., Allard, D., Ambrosio, M., Anchordoqui, L., Anzalone, A., Arai, Y., Aramo, C., Asano, K., Barrillon, P., Batsch, T., Bayer, J., Belenguer, T., Bellotti, R., Berlind, A. A., Bertaina, M., Biermann, P. L., Biktemerova, S., Blaksley, C., Blecki, J., Blin-Bondil, S., Bluemer, J., Bobik, P., Bogomilov, M., Bonamente, M., Briggs, M. S., Briz, S., Bruno, A., Cafagna, F., Campana, D., Capdevielle, J-N., Caruso, R., Casolino, M., Cassardo, C., Castellini, G., Catalano, O., Cellino, A., Chikawa, M., Christl, M. J., Connaughton, V., Cortes, J. F., Crawford, H. J., Cremonini, R., Csorna, S., D'Olivo, J. C., Dagoret-Campagne, S., de Castro, A. J., De Donato, C., de la Taille, C., De Pascale, M. P., del Peral, L., Dell'Oro, A., Di Martino, M., Distrati, G., Dupieux, M., Ebersoldt, A., Ebisuzaki, T., Engel, R., Falk, S., Fang, K., Fenu, F., Ferrarese, S., Fernandez-Gomez, I., Franceschi, A., Fujimoto, J., Galeotti, P., Garipov, G., Geary, J., Giaccari, U. G., Giraudo, G., Gonchar, M., Alvarado, C. Gonzalez, Gorodetzky, P., Guarino, F., Guzman, A., Hachisu, Y., Harlov, B., Haungs, A., Carretero, J. Hernandez, Higashide, K., Iguchi, T., Ikeda, H., Inoue, N., Inoue, S., Insolia, A., Isgro, F., Itow, Y., Joven, E., Judd, E. G., Jung, A., Kajino, F., Kajino, T., Kaneko, I., Karadzhov, Y., Karczmarczyk, J., Katahira, K., Kawai, K., Kawasaki, Y., Keilhauer, B., Khrenov, B. A., Kim, Jeong-Sook, Kim, Soon-Wook, Kim, Sug-Whan, Kleifges, M., Klimov, P. A., Ko, S. H., Kolev, D., Kreykenbohm, I., Kudela, K., Kurihara, Y., Kuznetsov, E., La Rosa, G., Lee, J., Licandro, J., Lim, H., Lopez, F., Maccarone, M. C., Marcelli, L., Marini, A., Martin-Chassard, G., Martinez, O., Masciantonio, G., Mase, K., Matev, R., Maurissen, A., Medina-Tanco, G., Mernik, T., Miyamoto, H., Miyazaki, Y., Mizumoto, Y., Modestino, G., Monnier-Ragaigne, D., Rıos, J. A. Morales de los, Mot, B., Murakami, T., Nagano, M., Nagata, M., Nagataki, S., Nam, J. W., Nam, S., Nam, K., Napolitano, T., Naumov, D., Neronov, A., Nomoto, K., Ogawa, T., Ohmori, H., Olinto, A. V., Orleanski, P., Osteria, G., Pacheco, N., Panasyuk, M. I., Parizot, E., Park, I. H., Pastircak, B., Patzak, T., Paul, T., Pennypacker, C., Peter, T., Picozza, P., Pollini, A., Prieto, H., Reardon, P., Reina, M., Reyes, M., Ricci, M., Rodrıguez, I., Frıas, M. D. Rodrıguez, Ronga, F., Rothkaehl, H., Roudil, G., Rusinov, I., Rybczynski, M., Sabau, M. D., Cano, G. Saez, Saito, A., Sakaki, N., Sakata, M., Salazar, H., Sanchez, S., Santangelo, A., Cruz, L. Santiago, Palomino, M. Sanz, Saprykin, O., Sarazin, F., Sato, H., Sato, M., Schanz, T., Schieler, H., Scotti, V., Scuderi, M., Segreto, A., Selmane, S., Semikoz, D., Serra, M., Sharakin, S., Shibata, T., Shimizu, H. M., Shinozaki, K., Shirahama, T., Siemieniec-Ozieblo, G., Lopez, H. H. Silva, Sledd, J., Slominska, K., Sobey, A., Sugiyama, T., Supanitsky, D., Suzuki, M., Szabelska, B., Szabelski, J., Tajima, F., Tajima, N., Tajima, T., Takami, H., Nakamura, T., Takeda, M., Takahashi, Y., Takizawa, Y., Tenzer, C., Tkachev, L., Tomida, T., Tone, N., Trillaud, F., Tsenov, R., Tsuno, K., Tymieniecka, T., Uchihori, Y., Vaduvescu, O., Valdes-Galicia, J. F., Vallania, P., Valore, L., Vankova, G., Vigorito, C., Villasenor, L., von Ballmoos, P., Wada, S., Watanabe, J., Watanabe, S., Watts Jr, J., Weber, M., Weiler, T. J., Wibig, T., Wiencke, L., Wille, M., Wilms, J., Wlodarczyk, Z., Yamamoto, T., Yamamoto, Y., Yang, J., Yano, H., Yashin, I. V., Yonetoku, D., Yoshida, K., Yoshida, S., Young, R., Zamora, A., and Marchi, A. Zuccaro

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena
Abstract

Contributions of the JEM-EUSO Collaboration to the 32nd International Cosmic Ray Conference, Beijing, August, 2011., Comment: 33 contributions plus index

Published
2012

155. On the sensitivity of the HAWC observatory to gamma-ray bursts

Author

HAWC collaboration, Abeysekara, A. U., Aguilar, J. A., Aguilar, S., Alfaro, R., Almaraz, E., Álvarez, C., Álvarez-Romero, J. de D., Álvarez, M., Arceo, R., Arteaga-Velázquez, J. C., Badillo, C., Barber, A., Baughman, B. M., Bautista-Elivar, N., Belmont, E., Benítez, E., BenZvi, S. Y., Berley, D., Bernal, A., Bonamente, E., Braun, J., Caballero-Lopez, R., Cabrera, I., Carramiñana, A., Carrasco, L., Castillo, M., Chambers, L., Conde, R., Condreay, P., Cotti, U., Cotzomi, J., D'Olivo, J. C., de la Fuente, E., De León, C., Delay, S., Delepine, D., DeYoung, T., Diaz, L., Diaz-Cruz, L., Dingus, B. L., Duvernois, M. A., Edmunds, D., Ellsworth, R. W., Fick, B., Fiorino, D. W., Flandes, A., Fraija, N. I., Galindo, A., García-Luna, J. L., García-Torales, G., Garfias, F., González, L. X., González, M. M., Goodman, J. A., Grabski, V., Gussert, M., Guzmán-Ceron, C., Hampel-Arias, Z., Harris, T., Hays, E., Hernandez-Cervantes, L., Hüntemeyer, P. H., Imran, A., Iriarte, A., Jimenez, J. J., Karn, P., Kelley-Hoskins, N., Kieda, D., Langarica, R., Lara, A., Lauer, R., Lee, W. H., Linares, E. C., Linnemann, J. T., Longo, M., Luna-García, R., Martínez, H., Martínez, J., Martínez, L. A., Martínez, O., Martínez-Castro, J., Martos, M., Matthews, J., McEnery, J. E., Medina-Tanco, G., Mendoza-Torres, J. E., Miranda-Romagnoli, P. A., Montaruli, T., Moreno, E., Mostafa, M., Napsuciale, M., Nava, J., Nellen, L., Newbold, M., Noriega-Papaqui, R., Oceguera-Becerra, T., Tapia, A. Olmos, Orozco, V., Pérez, V., Pérez-Pérez, E. G., Perkins, J. S., Pretz, J., Ramirez, C., Ramírez, I., Rebello, D., Rentería, A., Reyes, J., Rosa-González, D., Rosado, A., Ryan, J. M., Sacahui, J. R., Salazar, H., Salesa, F., Sandoval, A., Santos, E., Schneider, M., Shoup, A., Silich, S., Sinnis, G., Smith, A. J., Sparks, K., Springer, W., Suárez, F., Suarez, N., Taboada, I., Tellez, A. F., Tenorio-Tagle, G., Tepe, A., Toale, P. A., Tollefson, K., Torres, I., Ukwatta, T. N., Valdes-Galicia, J., Vanegas, P., Vasileiou, V., Vázquez, O., Vázquez, X., Villaseñor, L., Wall, W., Walters, J. S., Warner, D., Westerhoff, S., Wisher, I. G., Wood, J., Yodh, G. B., Zaborov, D., and Zepeda, A.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

We present the sensitivity of HAWC to Gamma Ray Bursts (GRBs). HAWC is a very high-energy gamma-ray observatory currently under construction in Mexico at an altitude of 4100 m. It will observe atmospheric air showers via the water Cherenkov method. HAWC will consist of 300 large water tanks instrumented with 4 photomultipliers each. HAWC has two data acquisition (DAQ) systems. The main DAQ system reads out coincident signals in the tanks and reconstructs the direction and energy of individual atmospheric showers. The scaler DAQ counts the hits in each photomultiplier tube (PMT) in the detector and searches for a statistical excess over the noise of all PMTs. We show that HAWC has a realistic opportunity to observe the high-energy power law components of GRBs that extend at least up to 30 GeV, as it has been observed by Fermi LAT. The two DAQ systems have an energy threshold that is low enough to observe events similar to GRB 090510 and GRB 090902b with the characteristics observed by Fermi LAT. HAWC will provide information about the high-energy spectra of GRBs which in turn could help to understanding about e-pair attenuation in GRB jets, extragalactic background light absorption, as well as establishing the highest energy to which GRBs accelerate particles.

Published
2011
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156. Experimental determination of distance and orientation of metallic nanodimers by polarization dependent plasmon coupling

Author

Grecco, H. E. and Martínez, O. E.

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

Live cell imaging using metallic nanoparticles as tags is an emerging technique to visualize long and highly dynamic processes due to the lack of photobleaching and high photon rate. However, the lack of excited states as compared to fluorescent dyes prevents the use of resonance energy transfer and recently developed super resolution methods to measure distances between objects closer that the resolution limit. In this work, we experimentally demonstrate a technique to determine subdiffraction distances based on the near field coupling of metallic nanoparticles. Due to the symmetry breaking in the scattering cross section, not only distances but also relative orientations can be measured. Gold nanoparticles were prepared on glass in such way that a small fraction of dimers was present. The sample was sequentially illuminated with two wavelengths to separate background from nanoparticle scattering based on their spectral properties. A novel total internal reflection illumination scheme in which the polarization can be rotated was used to further minimize background contributions. In this way, radii, distance and orientation were measured for each individual dimer and their statistical distributions were found to be in agreement with the expected ones. We envision that this technique will allow fast and long term tracking of relative distance and orientation in biological processes., Comment: 9 pages, 5 figures, Commentary from the reviewer available in Papers in Physics

Published
2011
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157. Surface Percolation and Growth. An alternative scheme for breaking the diffraction limit in optical patterning

Author

Kunik, D., Pietrasanta, L. I., and Martínez, O. E.

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science
Abstract

A nanopatterning scheme is presented by which the structure height can be controlled in the tens of nanometers range and the lateral resolution is a factor at least three times better than the point spread function of the writing beam. The method relies on the initiation of the polymerization mediated by a very inefficient energy transfer from a fluorescent dye molecule after single photon absorption. The mechanism has the following distinctive steps: the dye adsorbs on the substrate surface with a higher concentration than in the bulk, upon illumination it triggers the polymerization, then isolated islands develop and merge into a uniform structure (percolation), which subsequently grows until the illumination is interrupted. This percolation mechanism has a threshold that introduces the needed nonlinearity for the fabrication of structures beyond the diffraction limit., Comment: 10 pages, 8 figures

Published
2010
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158. Spectroscopic monitoring of the Blazar 3C 454.3

Author

Benitez, E., Chavushyan, V. H., Raiteri, C. M., Villata, M., Dultzin, D., Martinez, O., Perez-Camargo, B., and Torrealba, J.

Subjects
Astrophysics - Cosmology and Extragalactic Astrophysics, Astrophysics - High Energy Astrophysical Phenomena
Abstract

We performed an optical spectroscopic monitoring of the blazar 3C 454.3 from September 2003 to July 2008. Sixteen optical spectra were obtained during different runs, which constitute the first spectroscopic monitoring done in the rest-frame UV region (z=0.859). An overall flux variation of the MgII (2800 A) by a factor ~ 3 was observed, while the corresponding UV continuum (F_cont at 3000 A) changed by a factor ~ 14. The MgII emission lines respond proportionally to the continuum variations when the source is in a low-activity state. In contrast, near the optical outbursts detected in 2005 and 2007, the MgII emission lines showed little response to the continuum flux variations. During the monitored period the UV FeII flux changed by a factor ~ 6 and correlated with F_cont (r = 0.92). A negative correlation between EW(Mg II) and F_cont was found, i.e. the so-called "Intrinsic Baldwin Effect"., Comment: 2 pages, 2 figures, ASPC (Proceeding Accretion and Ejection in AGN: A Global View)

Published
2009

159. Water Cherenkov Detectors response to a Gamma Ray Burst in the Large Aperture GRB Observatory

Author

Allard, D., Alvarez, C., Asorey, H., Barros, H., Bertou, X., Castillo, M., Chirinos, J. M., De Castro, A., Flores, S., Gonzalez, J., Berisso, M. Gomez, Grajales, J., Guada, C., Day, W. R. Guevara, Ishitsuka, J., Lopez, J. A., Martinez, O., Melfo, A., Meza, E., Loza, P. Miranda, Barbosa, E. Moreno, Murrugarra, C., Nunez, L. A., Ormachea, L. J. Otiniano, Perez, G., Perez, Y., Ponce, E., Quispe, J., Quintero, C., Rivera, H., Rosales, M., Rovero, A. C., Saavedra, O., Salazar, H., Tello, J. C., Peralda, R. Ticona, Varela, E., Velarde, A., Villasenor, L., Wahl, D., and Zamalloa, M. A.

Subjects
Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Cosmology and Extragalactic Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

In order to characterise the behaviour of Water Cherenkov Detectors (WCD) under a sudden increase of 1 GeV - 1 TeV background photons from a Gamma Ray Burst (GRB), simulations were conducted and compared to data acquired by the WCD of the Large Aperture GRB Observatory (LAGO). The LAGO operates arrays of WCD at high altitude to detect GRBs using the single particle technique. The LAGO sensitivity to GRBs is derived from the reported simulations of the gamma initiated particle showers in the atmosphere and the WCD response to secondaries., Comment: 5 pages, proceeding of the 31st ICRC 2009

Published
2009

160. The Large Aperture GRB Observatory

Author

Allard, D., Alvarez, C., Asorey, H., Barros, H., Bertou, X., Castillo, M., Chirinos, J. M., De Castro, A., Flores, S., Gonzalez, J., Berisso, M. Gomez, Grajales, J., Guada, C., Day, W. R. Guevara, Ishitsuka, J., Lopez, J. A., Martinez, O., Melfo, A., Meza, E., Loza, P. Miranda, Barbosa, E. Moreno, Murrugarra, C., Nunez, L. A., Ormachea, L. J. Otiniano, Perez, G., Perez, Y., Ponce, E., Quispe, J., Quintero, C., Rivera, H., Rosales, M., Rovero, A. C., Saavedra, O., Salazar, H., Tello, J. C., Peralda, R. Ticona, Varela, E., Velarde, A., Villasenor, L., Wahl, D., and Zamalloa, M. A.

Subjects
Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Cosmology and Extragalactic Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The Large Aperture GRB Observatory (LAGO) is aiming at the detection of the high energy (around 100 GeV) component of Gamma Ray Bursts, using the single particle technique in arrays of Water Cherenkov Detectors (WCD) in high mountain sites (Chacaltaya, Bolivia, 5300 m a.s.l., Pico Espejo, Venezuela, 4750 m a.s.l., Sierra Negra, Mexico, 4650 m a.s.l). WCD at high altitude offer a unique possibility of detecting low gamma fluxes in the 10 GeV - 1 TeV range. The status of the Observatory and data collected from 2007 to date will be presented., Comment: 4 pages, proceeding of 31st ICRC 2009

Published
2009

161. Operating Water Cherenkov Detectors in high altitude sites for the Large Aperture GRB Observatory

Author

Allard, D., Alvarez, C., Asorey, H., Barros, H., Bertou, X., Castillo, M., Chirinos, J. M., De Castro, A., Flores, S., Gonzalez, J., Berisso, M. Gomez, Grajales, J., Guada, C., Day, W. R. Guevara, Ishitsuka, J., Lopez, J. A., Martinez, O., Melfo, A., Meza, E., Loza, P. Miranda, Barbosa, E. Moreno, Murrugarra, C., Nunez, L. A., Ormachea, L. J. Otiniano, Perez, G., Perez, Y., Ponce, E., Quispe, J., Quintero, C., Rivera, H., Rosales, M., Rovero, A. C., Saavedra, O., Salazar, H., Tello, J. C., Peralda, R. Ticona, Varela, E., Velarde, A., Villasenor, L., Wahl, D., and Zamalloa, M. A.

Subjects
Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Cosmology and Extragalactic Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

Water Cherenkov Detectors (WCD) are efficient detectors for detecting GRBs in the 10 GeV - 1 TeV energy range using the single particle technique, given their sensitivity to low energy secondary photons produced by high energy photons when cascading in the atmosphere. The Large Aperture GRB Observatory (LAGO) operates arrays of WCD in high altitude sites (above 4500 m a.s.l.) in Bolivia, Mexico and Venezuela, with planned extension to Peru. Details on the operation and stability of these WCD in remote sites with high background rates of particles will be detailed, and compared to simulations. Specific issues due to operation at high altitude, atmospheric effects and solar activity, as well as possible hardware enhancements will also be presented., Comment: 5 pages, proceeding of 31st ICRC 2009

Published
2009

162. Digital Transformation Led by Nurses and Nursing Managers' Priorities: A Qualitative Study.

Author

Navarro Martínez, O., Leyva-Moral, J. M., and Leal Costa, César

Subjects
*NURSE administrators, *DIFFUSION of innovations, *PROPRIETARY hospitals, *QUALITATIVE research, *DIGITAL health, *LEADERSHIP, *JUDGMENT sampling, *THEMATIC analysis, *ORGANIZATIONAL change, *NURSES' attitudes, *RESEARCH methodology, *COMMUNICATION
Abstract

Nurse‐led digital transformation promotes nurses' participation and leadership in digital health. It also aims to improve the quality of care and patient satisfaction. The objective is to describe the priorities of nursing managers in the field of digital health and their beliefs related to the digital transformation led by nurses. The methodology used is a qualitative‐descriptive study. The data were collected by means of the implementation of playful‐reflective workshops. Open and/or closed questions were used, to which participants responded using their mobile phones, by capturing QR codes. A group of 32 nursing managers from the Spanish private hospital sector were invited to participate by means of purposive sampling. Data were analysed using the Braun and Clarke thematic analysis performed by two researchers independently. Of the 32 participants, 25 were women. The average age was 38 years. The main utility of the use of technology in health environments that they noted was innovation, followed by communication. Another utility mentioned repeatedly was that of visibility, considering digital media as a way to show the population the role of a nurse. They also noted time savings and error reduction. Moreover, as barriers to the implementation of technology, participants pointed out the lack of skills or equipment, institutional support, and the care burden. This study shows that nursing managers are aware of the need and benefits that nurse‐led digital transformation can bring about. These findings can pave the way for promoting a nurse‐led digital leadership culture. [ABSTRACT FROM AUTHOR]

Published
2024
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163. Photon counting statistics using a digital oscilloscope

Author

Ricci, M. L. Martinez, Mazzaferri, J., Bragas, A. V., and Martinez, O. E.

Subjects
Physics - Optics
Abstract

We present a photon counting experiment designed for an undergraduate physics laboratory. The statistics of the number of photons of a pseudo-thermal light source is studied in two limiting cases: much longer and much shorter than the coherence time, giving Poisson and Bose-Einstein distributions, respectively. The experiment can be done in a reasonable time using a digital oscilloscope without the need of counting boards. The use of the oscilloscope has the advantage of allowing the storage of the data for further processing. The stochastic nature of the detection phenomena adds additional value because students are forced to do data processing and analysis., Comment: 13 pages, 9 Figures, 1 Table, Original File Type: MS-Word, Submitted File type: pdf - Last Version: Whole paper improvement, references added

Published
2006
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164. Phase diagram of silicon from atomistic simulations

Author

Kaczmarski, M., Bedoya-Martinez, O. N., and Hernandez, E. R.

Subjects
Condensed Matter - Materials Science
Abstract

In this letter we present a calculation of the temperature-pressure phase diagram of Si in a range of pressures covering from -5 to 20 GPa and temperatures up to the melting point. The phase boundaries and triple points between the diamond, liquid, $\beta$-Sn and ${Si}_{34}$ clathrate phases are reported. We have employed efficient simulation techniques to calculate free energies and to numerically integrate the Clausius-Clapeyron equation, combined with a tight binding model capable of an accuracy comparable to that of first-principles methods. The resulting phase diagram agrees well with the available experimental data., Comment: 5 pages, 1 figure, accepted in PRL

Published
2005
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165. EUSO-TA – First results from a ground-based EUSO telescope

Author

Abdellaoui, G., Abe, S., Adams, J.H., Jr., Ahriche, A., Allard, D., Allen, L., Alonso, G., Anchordoqui, L., Anzalone, A., Arai, Y., Asano, K., Attallah, R., Attoui, H., Ave Pernas, M., Bacholle, S., Bakiri, M., Baragatti, P., Barrillon, P., Bartocci, S., Bayer, J., Beldjilali, B., Belenguer, T., Belkhalfa, N., Bellotti, R., Belov, A., Belov, K., Belz, J.W., Benmessai, K., Bertaina, M., Biermann, P.L., Biktemerova, S., Bisconti, F., Blanc, N., Blecki, J., Blin-Bondil, S., Bobik, P., Bogomilov, M., Bozzo, E., Bruno, A., Caballero, K.S., Cafagna, F., Campana, D., Capdevielle, J-N., Capel, F., Caramete, A., Caramete, L., Carlson, P., Caruso, R., Casolino, M., Cassardo, C., Castellina, A., Catalano, O., Cellino, A., Chikawa, M., Chiritoi, G., Christl, M.J., Connaughton, V., Conti, L., Cordero, G., Cotto, G., Crawford, H.J., Cremonini, R., Csorna, S., Cummings, A., Dagoret-Campagne, S., De Donato, C., de la Taille, C., De Santis, C., del Peral, L., Di Martino, M., Djemil, T., Dutan, I., Ebersoldt, A., Ebisuzaki, T., Engel, R., Eser, J., Fenu, F., Fernández-González, S., Fernández-Soriano, J., Ferrarese, S., Flamini, M., Fornaro, C., Fouka, M., Franceschi, A., Franchini, S., Fuglesang, C., Fujii, T., Fujimoto, J., Fukushima, M., Galeotti, P., García-Ortega, E., Garipov, G., Gascón, E., Genci, J., Giraudo, G., González Alvarado, C., Gorodetzky, P., Greg, R., Guarino, F., Guzmán, A., Hachisu, Y., Haiduc, M., Harlov, B., Haungs, A., Hernández Carretero, J., Hidber Cruz, W., Ikeda, D., Inoue, N., Inoue, S., Isgrò, F., Itow, Y., Jammer, T., Jeong, S., Joven, E., Judd, E.G., Jung, A., Jochum, J., Kajino, F., Kajino, T., Kalli, S., Kaneko, I., Karadzhov, Y., Karczmarczyk, J., Katahira, K., Kawai, K., Kawasaki, Y., Kedadra, A., Khales, H., Khrenov, B.A., Kim, Jeong-Sook, Kim, Soon-Wook, Kleifges, M., Klimov, P.A., Kolev, D., Krantz, H., Kreykenbohm, I., Kudela, K., Kurihara, Y., Kusenko, A., Kuznetsov, E., La Barbera, A., Lachaud, C., Lahmar, H., Lakhdari, F., Larsson, O., Lee, J., Licandro, J., López Campano, L., Maccarone, M.C., Mackovjak, S., Mahdi, M., Maravilla, D., Marcelli, L., Marcos, J.L., Marini, A., Marszal, W., Martens, K., Martín, Y., Martinez, O., Martucci, M., Masciantonio, G., Mase, K., Mustafa, M., Matev, R., Matthews, J.N., Mebarki, N., Medina-Tanco, G., Mendoza, M.A., Menshikov, A., Merino, A., Meseguer, J., Meyer, S.S., Mimouni, J., Miyamoto, H., Mizumoto, Y., Monaco, A., Morales de los Ríos, J.A., Nagataki, S., Naitamor, S., Napolitano, T., Nava, R., Neronov, A., Nomoto, K., Nonaka, T., Ogawa, T., Ogio, S., Ohmori, H., Olinto, A.V., Orleański, P., Osteria, G., Pagliaro, A., Painter, W., Panasyuk, M.I., Panico, B., Parizot, E., Park, I.H., Pastircak, B., Patzak, T., Paul, T., Pérez-Grande, I., Perfetto, F., Peter, T., Picozza, P., Pindado, S., Piotrowski, L.W., Piraino, S., Placidi, L., Plebaniak, Z., Pliego, S., Pollini, A., Polonski, Z., Popescu, E.M., Prat, P., Prévôt, G., Prieto, H., Puehlhofer, G., Putis, M., Rabanal, J., Radu, A.A., Reyes, M., Rezazadeh, M., Ricci, M., Rodríguez Frías, M.D., Ronga, F., Roudil, G., Rusinov, I., Rybczyński, M., Sabau, M.D., Sáez Cano, G., Sagawa, H., Sahnoune, Z., Saito, A., Sakaki, N., Salazar, H., Sanchez Balanzar, J.C., Sánchez, J.L., Santangelo, A., Sanz-Andrés, A., Sanz Palomino, M., Saprykin, O., Sarazin, F., Sato, M., Schanz, T., Schieler, H., Scotti, V., Selmane, S., Semikoz, D., Serra, M., Sharakin, S., Shimizu, H.M., Shin, H.S., Shinozaki, K., Shirahama, T., Sokolsky, P., Spataro, B., Stan, I., Sugiyama, T., Supanitsky, D., Suzuki, M., Szabelska, B., Szabelski, J., Tajima, N., Tajima, T., Takahashi, Y., Takami, H., Takeda, M., Takizawa, Y., Talai, M.C., Tameda, Y., Tenzer, C., Thomas, S.B., Thomson, G.B., Tibolla, O., Tkachev, L., Tokuno, H., Tomida, T., Tone, N., Toscano, S., Traïche, M., Tsenov, R., Tsunesada, Y., Tsuno, K., Tubbs, J., Turriziani, S., Uchihori, Y., Vaduvescu, O., Valdés-Galicia, J.F., Vallania, P., Vankova, G., Vigorito, C., Villaseñor, L., Vlcek, B., von Ballmoos, P., Vrabel, M., Wada, S., Watanabe, J., Watts, J., Jr., Weber, M., Weigand Muñoz, R., Weindl, A., Wiencke, L., Wille, M., Wilms, J., Włodarczyk, Z., Yamamoto, T., Yang, J., Yano, H., Yashin, I.V., Yonetoku, D., Yoshida, S., Young, R., Zgura, I.S., Zotov, M.Yu., and Zuccaro Marchi, A.

Published
2018
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167. Profile variability of the H-alpha and H-beta broad emission lines in NGC5548

Author

Shapovalova, A. I., Doroshenko, V. T., Bochkarev, N. G., Carrasco, A. N. Burenkov. L., Chavushyan, V. H., Collin, S., Valdes, J. R., Borisov, N., Dumont, A-M., Vlasuyk, V. V., Chillingarian, I., Fioktistova, I. S., and Martinez, O. M.

Subjects
Astrophysics
Abstract

Between 1996 and 2002, we have carried out a spectral monitoring program for the Seyfert galaxy NGC 5548. High quality spectra (S/N>50), covering the spectral range (4000-7500)AA were obtained with the 6 m and 1 m telescopes of SAO (Russia) and with the 2.1 m telescope GHO (Mexico). We found that both the flux in the lines and the continuum gradually decreased, reaching minimum values during May-June 2002. The mean, rms, and the averaged over years, observed and difference line profiles of H-alpha and H-beta reveal the double peaked structure at the radial velocity ~+-1000km/s. The relative intensity of these peaks changes with time. During 1996, the red peak was the brightest, while in 1998 - 2002, the blue peak became the brighter one. In 2000-2002 a distinct third peak appeared in the red wing of H-alpha and H-beta line profiles. The radial velocity of this feature decreased between 2000 and 2002 from ~+2500 km/s to ~+2000 km/s. The fluxes of the various parts of the line profiles are well correlated with each other and also with the continuum flux. Shape changes of the different parts of the broad line are not correlated with continuum variations and, apparently, are not related to reverberation effects. Changes of the integral Balmer decrement are, on average, anticorrelated with the continuum flux variations. This is probably due to an increasing role of collisional excitation as the ionizing flux decreases. Our results favor the formation of the broad Balmer lines in a turbulent accretion disc with large and moving "optically thick" inhomogeneities, capable of reprocessing the central source continuum., Comment: Accepted for publication in A&A; 24 pages, 14 postscript figures

Published
2004
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168. Dynamics of HCGs

Author

Tovmassian, H. M., Chavushian, V., Martinez, O., Yam, O., and Tiersch, H.

Subjects
Astrophysics
Abstract

It is shown that compact groups of galaxies (HCGs, ShCGS) are stable formations, in which principal member galaxies together with faint galaxies in their environment rotate in elongated orbits around the common gravitational center of the group. Hence, the multitude of puzzles related to CGs: the very existence of CGs, absence of strong radio sources, absence of strong signs of interaction and merging, the fact that elliptical members (the best candidates for ongoing merging) are not more frequently first-ranked than spirals, etc., are solved. The number of such groups, may be much higher in the near Universe, since only those of them, the elongation of which is oriented close to the line of sight, or bright members of which happen to be close to each other during regular rotation, are detected as the so-called compact groups., Comment: Presented in "Galaxies: the Third Dimension", proceedings of a conference held in Cozumel, Mexico, 3-7 December 2001. Organized by the Instituto de Astronomia, UNAM. Edited by Margarita Rosado, Luc Binette, and Lorena Arias To be published in ASP Conf. Series

Published
2002

169. Current status of acceptance and commitment therapy for chronic pain: a narrative review

Author

Feliu-Soler A, Montesinos F, Gutiérrez-Martínez O, Scott W, McCracken LM, and Luciano JV

Subjects
Acceptance and Commitment therapy, chronic pain, review, assessment, clinical evidence, cost-effectiveness, Medicine (General), R5-920
Abstract

Albert Feliu-Soler,1,2 Francisco Montesinos,3,4 Olga Gutiérrez-Martínez,5 Whitney Scott,6 Lance M McCracken,6,7 Juan V Luciano1,2 1Teaching, Research and Innovation Unit, Parc Sanitari Sant Joan de Déu, St. Boi de Llobregat, Spain; 2Primary Care Prevention and Health Promotion Research Network (RedIAPP), Madrid, Spain; 3Department of Psychology, Faculty of Biomedical and Health Sciences, Universidad Europea de Madrid, Madrid, Spain; 4Instituto ACT, Madrid, Spain; 5Fundación Biomédica Galicia Sur, Vigo, Spain; 6Department of Psychology, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK; 7INPUT Pain Management, Guys and St Thomas NHSFT, London, UK Abstract: It is well known that chronic pain is prevalent, complex to manage, and associated with high costs, in health care and society in general. Thanks to advances in new forms of cognitive behavioral therapy (known as third-wave CBT), currently clinicians and researchers have an empirically validated psychological treatment with increasing research support for the treatment of chronic pain. This treatment is called acceptance and commitment therapy (ACT). The main aim of this paper is to provide a narrative review that summarizes and integrates the current state of knowledge of ACT in the management of chronic pain as well as discuss current challenges and opportunities for progress. Based on the psychological flexibility model, ACT extends previous forms of CBT and integrates many CBT-related variables into six core therapeutic processes. ACT is a process-based therapy that fosters openness, awareness, and engagement through a wide range of methods, including exposure-based and experiential methods, metaphors, and values clarification. To our knowledge, there are three published systematic reviews and meta-analyses that support the effectiveness of ACT for chronic pain and many studies focused on specific processes derived from the psychological flexibility model. There is also promising support for the cost-effectiveness of ACT; however, the current evidence is still insufficient to establish firm conclusions about cost-effectiveness and the most efficient means of delivery. Additional well-designed economic evaluations are needed. Other research aims include delineating the neurobiological underpinnings of ACT, refining available outcome and process measures or develop new ones for ACT trials, and meeting the challenge of wide dissemination and implementation in real-world clinical practice. Keywords: acceptance and commitment therapy, chronic pain, review, assessment, clinical evidence, cost-effectiveness

Published
2018

171. Cosmic ray oriented performance studies for the JEM-EUSO first level trigger

Author

Abdellaoui, G., Abe, S., Acheli, A., Adams, J.H., Jr., Ahmad, S., Ahriche, A., Albert, J.-N., Allard, D., Alonso, G., Anchordoqui, L., Andreev, V., Anzalone, A., Aouimeur, W., Arai, Y., Arsene, N., Asano, K., Attallah, R., Attoui, H., Ave Pernas, M., Bacholle, S., Bakiri, M., Baragatti, P., Barrillon, P., Bartocci, S., Batsch, T., Bayer, J., Bechini, R., Belenguer, T., Bellotti, R., Belov, A., Belov, K., Benadda, B., Benmessai, K., Berlind, A.A., Bertaina, M., Biermann, P.L., Biktemerova, S., Bisconti, F., Blanc, N., Błȩcki, J., Blin-Bondil, S., Bobik, P., Bogomilov, M., Bonamente, M., Boudaoud, R., Bozzo, E., Briggs, M.S., Bruno, A., Caballero, K.S., Cafagna, F., Campana, D., Capdevielle, J.-N., Capel, F., Caramete, A., Caramete, L., Carlson, P., Caruso, R., Casolino, M., Cassardo, C., Castellina, A., Castellini, G., Catalano, C., Catalano, O., Cellino, A., Chikawa, M., Chiritoi, G., Christl, M.J., Connaughton, V., Conti, L., Contino, G., Cordero, G., Cotto, G., Crawford, H.J., Cremonini, R., Csorna, S., Dagoret-Campagne, S., De Donato, C., de la Taille, C., De Santis, C., del Peral, L., Di Martino, M., Djemil, T., Djenas, S.A., Dulucq, F., Dupieux, M., Dutan, I., Ebersoldt, A., Ebisuzaki, T., Engel, R., Eser, J., Fang, K., Fenu, F., Fernández-González, S., Fernández-Soriano, J., Ferrarese, S., Finco, D., Flamini, M., Fornaro, C., Forza, R., Fouka, M., Franceschi, A., Franchini, S., Fuglesang, C., Fujimoto, J., Fukushima, M., Galeotti, P., García-Ortega, E., Garipov, G., Gascón, E., Geary, J., Gelmini, G., Genci, J., Giraudo, G., Gonchar, M., González Alvarado, C., Gorodetzky, P., Guardone, N., Guarino, F., Guehaz, R., Guzmán, A., Hachisu, Y., Haiduc, M., Harlov, B., Haungs, A., Hernández Carretero, J., Hidber, W., Higashide, K., Ikeda, D., Ikeda, H., Inoue, N., Inoue, S., Insolia, A., Isgrò, F., Itow, Y., Jammer, T., Joven, E., Judd, E.G., Jung, A., Jochum, J., Kajino, F., Kajino, T., Kalli, S., Kaneko, I., Kang, D., Kanouni, F., Karadzhov, Y., Karczmarczyk, J., Karus, M., Katahira, K., Kawai, K., Kawasaki, Y., Kedadra, A., Khales, H., Khrenov, B.A., Kim, Jeong-Sook, Kim, Soon-Wook, Kim, Sug-Whan, Kleifges, M., Klimov, P.A., Kolev, D., Kreykenbohm, I., Kudela, K., Kurihara, Y., Kusenko, A., Kuznetsov, E., Lacombe, M., Lachaud, C., Lahmar, H., Lakhdari, F., Larsson, O., Lee, J., Licandro, J., Lim, H., López Campano, L., Maccarone, M.C., Mackovjak, S., Mahdi, M., Manfrin, M., Maravilla, D., Marcelli, L., Marcos, J.L., Marini, A., Martens, K., Martín, Y., Martinez, O., Masciantonio, G., Mase, K., Matev, R., Matthews, J.N., Mebarki, N., Medina-Tanco, G., Mehrad, L., Mendoza, M.A., Merino, A., Mernik, T., Meseguer, J., Messaoud, S., Micu, O., Mignone, M., Mimouni, J., Miyamoto, H., Miyazaki, Y., Mizumoto, Y., Modestino, G., Monaco, A., Monnier-Ragaigne, D., Morales de los Ríos, J.A., Moretto, C., Morozenko, V.S., Mot, B., Murakami, T., Nadji, B., Nagano, M., Nagata, M., Nagataki, S., Nakamura, T., Napolitano, T., Naumov, D., Nava, R., Neronov, A., Nomoto, K., Nonaka, T., Ogawa, T., Ogio, S., Ohmori, H., Olinto, A.V., Orleański, P., Osteria, G., Painter, W., Panasyuk, M.I., Panico, B., Parizot, E., Park, I.H., Park, H.W., Pastircak, B., Patzak, T., Paul, T., Pennypacker, C., Pérez-Grande, I., Perfetto, F., Peter, T., Picozza, P., Pierog, T., Pindado, S., Piotrowski, L.W., Piraino, S., Placidi, L., Plebaniak, Z., Pliego, S., Pollini, A., Popescu, E.M., Prat, P., Prévôt, G., Prieto, H., Putis, M., Rabanal, J., Radu, A.A., Rahmani, M., Reardon, P., Reyes, M., Rezazadeh, M., Ricci, M., Rodríguez Frías, M.D., Ronga, F., Roth, M., Rothkaehl, H., Roudil, G., Rusinov, I., Rybczyński, M., Sabau, M.D., Sáez Cano, G., Sagawa, H., Sahnoune, Z., Saito, A., Sakaki, N., Sakata, M., Salazar, H., Sanchez, J.C., Sánchez, J.L., Santangelo, A., Santiago Crúz, L., Sanz-Andrés, A., Sanz Palomino, M., Saprykin, O., Sarazin, F., Sato, H., Sato, M., Schanz, T., Schieler, H., Scotti, V., Segreto, A., Selmane, S., Semikoz, D., Serra, M., Sharakin, S., Shibata, T., Shimizu, H.M., Shinozaki, K., Shirahama, T., Siemieniec-Oziȩbło, G., Sledd, J., Słomińska, K., Sobey, A., Stan, I., Sugiyama, T., Supanitsky, D., Suzuki, M., Szabelska, B., Szabelski, J., Tahi, H., Tajima, F., Tajima, N., Tajima, T., Takahashi, Y., Takami, H., Takeda, M., Takizawa, Y., Talai, M.C., Tenzer, C., Tibolla, O., Tkachev, L., Tokuno, H., Tomida, T., Tone, N., Toscano, S., Traïche, M., Tsenov, R., Tsunesada, Y., Tsuno, K., Tymieniecka, T., Uchihori, Y., Unger, M., Vaduvescu, O., Valdés-Galicia, J.F., Vallania, P., Vankova, G., Vigorito, C., Villaseñor, L., Vlcek, B., von Ballmoos, P., Vrabel, M., Wada, S., Watanabe, J., Watanabe, S., Watts, J., Jr., Weber, M., Weigand Muñoz, R., Weindl, A., Weiler, T.J., Wibig, T., Wiencke, L., Wille, M., Wilms, J., Włodarczyk, Z., Yamamoto, T., Yamamoto, Y., Yang, J., Yano, H., Yashin, I.V., Yonetoku, D., Yoshida, S., Young, R., Zgura, I.S., Zotov, M.Yu., and Zuccaro Marchi, A.

Published
2017
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172. Meteor studies in the framework of the JEM-EUSO program

Author

Abdellaoui, G., Abe, S., Acheli, A., Adams, J.H., Jr., Ahmad, S., Ahriche, A., Albert, J.-N., Allard, D., Alonso, G., Anchordoqui, L., Andreev, V., Anzalone, A., Aouimeur, W., Arai, Y., Arsene, N., Asano, K., Attallah, R., Attoui, H., Ave Pernas, M., Bacholle, S., Bakiri, M., Baragatti, P., Barrillon, P., Bartocci, S., Batsch, T., Bayer, J., Bechini, R., Belenguer, T., Bellotti, R., Belov, A., Belov, K., Benadda, B., Benmessai, K., Berlind, A.A., Bertaina, M., Biermann, P.L., Biktemerova, S., Bisconti, F., Blanc, N., Błȩcki, J., Blin-Bondil, S., Bobik, P., Bogomilov, M., Bonamente, M., Boudaoud, R., Bozzo, E., Briggs, M.S., Bruno, A., Caballero, K.S., Cafagna, F., Campana, D., Capdevielle, J.-N., Capel, F., Caramete, A., Caramete, L., Carlson, P., Caruso, R., Casolino, M., Cassardo, C., Castellina, A., Castellini, G., Catalano, C., Catalano, O., Cellino, A., Chikawa, M., Chiritoi, G., Christl, M.J., Connaughton, V., Conti, L., Cordero, G., Crawford, H.J., Cremonini, R., Csorna, S., Dagoret-Campagne, S., De Donato, C., de la Taille, C., De Santis, C., del Peral, L., Di Martino, M., Djemil, T., Djenas, S.A., Dulucq, F., Dupieux, M., Dutan, I., Ebersoldt, A., Ebisuzaki, T., Engel, R., Eser, J., Fang, K., Fenu, F., Fernández-González, S., Fernández-Soriano, J., Ferrarese, S., Finco, D., Flamini, M., Fornaro, C., Fouka, M., Franceschi, A., Franchini, S., Fuglesang, C., Fujimoto, J., Fukushima, M., Galeotti, P., García-Ortega, E., Garipov, G., Gascón, E., Geary, J., Gelmini, G., Genci, J., Giraudo, G., Gonchar, M., González Alvarado, C., Gorodetzky, P., Guarino, F., Guehaz, R., Guzmán, A., Hachisu, Y., Haiduc, M., Harlov, B., Haungs, A., Hernández Carretero, J., Hidber, W., Higashide, K., Ikeda, D., Ikeda, H., Inoue, N., Inoue, S., Isgrò, F., Itow, Y., Jammer, T., Joven, E., Judd, E.G., Jung, A., Jochum, J., Kajino, F., Kajino, T., Kalli, S., Kaneko, I., Kang, D., Kanouni, F., Karadzhov, Y., Karczmarczyk, J., Karus, M., Katahira, K., Kawai, K., Kawasaki, Y., Kedadra, A., Khales, H., Khrenov, B.A., Kim, Jeong-Sook, Kim, Soon-Wook, Kim, Sug-Whan, Kleifges, M., Klimov, P.A., Kolev, D., Kreykenbohm, I., Kudela, K., Kurihara, Y., Kusenko, A., Kuznetsov, E., Lacombe, M., Lachaud, C., Lahmar, H., Lakhdari, F., Larsson, O., Lee, J., Licandro, J., Lim, H., López Campano, L., Maccarone, M.C., Mackovjak, S., Mahdi, M., Maravilla, D., Marcelli, L., Marcos, J.L., Marini, A., Martens, K., Martín, Y., Martinez, O., Masciantonio, G., Mase, K., Matev, R., Matthews, J.N., Mebarki, N., Medina-Tanco, G., Mehrad, L., Mendoza, M.A., Merino, A., Mernik, T., Meseguer, J., Messaoud, S., Micu, O., Mimouni, J., Miyamoto, H., Miyazaki, Y., Mizumoto, Y., Modestino, G., Monaco, A., Monnier-Ragaigne, D., Morales de los Ríos, J.A., Moretto, C., Morozenko, V.S., Mot, B., Murakami, T., Nadji, B., Nagano, M., Nagata, M., Nagataki, S., Nakamura, T., Napolitano, T., Nardelli, A., Naumov, D., Nava, R., Neronov, A., Nomoto, K., Nonaka, T., Ogawa, T., Ogio, S., Ohmori, H., Olinto, A.V., Orleański, P., Osteria, G., Painter, W., Panasyuk, M.I., Panico, B., Parizot, E., Park, I.H., Park, H.W., Pastircak, B., Patzak, T., Paul, T., Pennypacker, C., Perdichizzi, M., Pérez-Grande, I., Perfetto, F., Peter, T., Picozza, P., Pierog, T., Pindado, S., Piotrowski, L.W., Piraino, S., Placidi, L., Plebaniak, Z., Pliego, S., Pollini, A., Popescu, E.M., Prat, P., Prévôt, G., Prieto, H., Putis, M., Rabanal, J., Radu, A.A., Rahmani, M., Reardon, P., Reyes, M., Rezazadeh, M., Ricci, M., Rodríguez Frías, M.D., Ronga, F., Roth, M., Rothkaehl, H., Roudil, G., Rusinov, I., Rybczyński, M., Sabau, M.D., Sáez Cano, G., Sagawa, H., Sahnoune, Z., Saito, A., Sakaki, N., Sakata, M., Salazar, H., Sanchez, J.C., Sánchez, J.L., Santangelo, A., Santiago Crúz, L., Sanz-Andrés, A., Sanz Palomino, M., Saprykin, O., Sarazin, F., Sato, H., Sato, M., Schanz, T., Schieler, H., Scotti, V., Segreto, A., Selmane, S., Semikoz, D., Serra, M., Sharakin, S., Shibata, T., Shimizu, H.M., Shinozaki, K., Shirahama, T., Siemieniec-Oziȩbło, G., Sledd, J., Słomińska, K., Sobey, A., Stan, I., Sugiyama, T., Supanitsky, D., Suzuki, M., Szabelska, B., Szabelski, J., Tahi, H., Tajima, F., Tajima, N., Tajima, T., Takahashi, Y., Takami, H., Takeda, M., Takizawa, Y., Talai, M.C., Tenzer, C., Tibolla, O., Tkachev, L., Tokuno, H., Tomida, T., Tone, N., Toscano, S., Traïche, M., Tsenov, R., Tsunesada, Y., Tsuno, K., Tymieniecka, T., Uchihori, Y., Unger, M., Vaduvescu, O., Valdés-Galicia, J.F., Vallania, P., Vankova, G., Vigorito, C., Villaseñor, L., Vlcek, B., von Ballmoos, P., Vrabel, M., Wada, S., Watanabe, J., Watanabe, S., J. Watts Jr., Weber, M., Weigand Muñoz, R., Weindl, A., Weiler, T.J., Wibig, T., Wiencke, L., Wille, M., Wilms, J., Włodarczyk, Z., Yamamoto, T., Yamamoto, Y., Yang, J., Yano, H., Yashin, I.V., Yonetoku, D., Yoshida, S., Young, R., Zgura, I.S, Zotov, M.Yu., and Zuccaro Marchi, A.

Published
2017
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173. Calibration of a large water-Cherenkov detector at the Sierra Negra site of LAGO

Author

Alvarez, W., Alvarez, C., Araujo, C., Areso, O., Arnaldi, H., Asorey, H., Audelo, M., Barros, H., Bonnett, M., Calderon, R., Calderon, M., Campos-Fauth, A., Carramiñana, A., Carrasco, E., Carrera, E., Cazar, D., Cifuentes, E., Collogo, D., Conde, R., Cotzomi, J., Dasso, S., De Castro, A., De La Torre, J., De León, R., Estupiñan, A., Galindo, A., García, L., Gomez Berisso, M., González, M., Guevara, W., Gulisano, A.M., Hernández, H., Jaimes, A., López, J., Mantilla, C., Martín, R., Martinez-Mendez, A., Martínez, O., Martins, E., Macías-Meza, J.J., Mayo-García, R., Melo, T., Mendoza, J., Miranda, P., Montes, E., Morales, E., Morales, I., Moreno, E., Murrugarra, C., Nina, C., Núñez, L.A., Núñez-Castiñeyra, A., Otiniano, L., Peña-Rodríguez, J., Perenguez, J., Pérez, H., Pérez, Y., Pérez, G., Pinilla-Velandia, S., Ponce, E., Quishpe, R., Quispe, F., Ramelli, M., Reyes, K., Rivera, H., Rodriguez, J., Rodríguez-Ferreira, J., Rodríguez-Pascual, M., Romero, M., Rubio-Montero, A.J., Salazar, H., Salinas, J., Sarmiento-Cano, C., Sidelnik, I., Sofo Haro, M., Suárez-Durán, M., Subieta, M., Tello, J., Ticona, R., Torres, I., Torres-Niõ, L., Truyenque, J., Valencia-Otero, M., Vargas, S., Vásquez, N., Villaseñor, L., Zamalloa, M., Zavala, L., and Bonilla, M.

Published
2017
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180. Effective Synthesis Procedure Based on Microwave Heating of the PdCo Aerogel Electrocatalyst for Its Use in Microfluidic Devices

Author

Martínez-Lázaro, A., primary, Mendoza-Camargo, A. P., additional, Rodriguez-Barajas, M. H., additional, Espinosa-Lagunes, F. I., additional, Salazar-Lara, Y., additional, Herrera-Gomez, A., additional, Cortazar-Martínez, O., additional, Rey-Raap, N., additional, Ledesma-García, J., additional, Arenillas, A., additional, and Arriaga, L. G., additional

Published
2023
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182. The data acquisition system of the Latin American Giant Observatory (LAGO)

Author

Alvarez, W., Alvarez, C., Araujo, C., Areso, O., Arnaldi, H., Asorey, H., Audelo, M., Barros, H., Bertou, X., Bonnett, M., Calderon, R., Calderon, M., Campos-Fauth, A., Carramiñana, A., Carrasco, E., Carrera, E., Cazar, D., Cifuentes, E., Cogollo, D., Conde, R., Cotzomi, J., Dasso, S., De Castro, A., De La Torre, J., De León, R., Estupiñan, A., Galindo, A., Garcia, L., Gómez Berisso, M., González, M., Guevara, W., Gulisano, A.M., Hernández, H., Jaimes, A., López, J., Mantilla, C., Martín, R., Martinez-Mendez, A., Martínez, O., Martins, E., Masías-Meza, J.J., Mayo-García, R., Melo, T., Mendoza, J., Miranda, P., Montes, E., Morales, E., Morales, I., Moreno, E., Murrugarra, C., Nina, C., Núñez, L.A., Núñez-Castiñeyra, A., Otiniano, L., Peña-Rodríguez, J., Perenguez, J., Pérez, H., Perez, Y., Perez, G., Pinilla-Velandia, S., Ponce, E., Quishpe, R., Quispe, F., Reyes, K., Rivera, H., Rodriguez, J., Rodríguez-Pascual, M., Romero, M., Rubio-Montero, A.J., Salazar, H., Salinas, J., Sarmiento-Cano, C., Sidelnik, I., Haro, M. Sofo, Suárez-Durán, M., Subieta, M., Tello, J., Ticona, R., Torres, I., Torres-Niño, L., Truyenque, J., Valencia-Otero, M., Vargas, S., Vásquez, N., Villasenor, L., Zamalloa, M., Zavala, L., Sofo Haro, M., and Arnaldi, L.H.

Published
2016
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186. Continuous and Localized Mn Implantation of ZnO

Author

González Díaz, Germán, Hernández Vélez, M., Jensen, J., Martínez, O., Sanz, R., Vázquez, M., González Díaz, Germán, Hernández Vélez, M., Jensen, J., Martínez, O., Sanz, R., and Vázquez, M.

Abstract

© Springer. We are grateful to P. Fernández and J.L. Baldonedo, Universidad Complutense, for help with the ion implantations and SEM pictures. This work was supported in part by the Spanish Ministry of Education under Grant MAT2007-6042. J. Jensen thanks the Carl Tryggers Foundation (Sweden) for financial support., We present results derived from continuous and localized 35 keV (55)Mn(+) ion implantations into ZnO. Localized implantations were carried out by using self-ordered alumina membranes as masks leading to ordered arrays of implanted volumes on the substrate surfaces. Defects and vacancies in the small implantation volumes of ZnO were generated due to the implantation processes besides the creation of new phases. Rapid thermal annealing was applied in the case of continuous implantation. The samples were characterized by HRSEM, GIXRD, Raman spectroscopy and RBS/C. Magnetic characterization of the samples pointed out appreciable differences among the samples obtained by the different implantation methods. This fact was mainly attributed to the different volume/surface ratios present in the implanted zones as well as to the increase of Mn atom concentrations along the grain frontiers in the nanostructured surfaces. The samples also showed a ferromagnetic transition phase at temperature value higher than room temperature., Spanish Ministry of Education, Carl Tryggers Foundation (Sweden), Depto. de Estructura de la Materia, Física Térmica y Electrónica, Fac. de Ciencias Físicas, TRUE, pub

Published
2023

187. Effective Synthesis Procedure Based on Microwave Heating of the PdCo Aerogel Electrocatalyst for Its Use in Microfluidic Devices

Author

Consejo Nacional de Humanidades, Ciencias y Tecnologías (México), Rey Raap, Natalia [0000-0002-5003-0035], Arenillas de la Puente, Ana [0000-0002-5388-1169], Martínez Lázaro, Mendoza-Camargo, A. P., Rodriguez-Barajas, M. H., Espinosa-Lagunes, F. I., Salazar-Lara, Y., Herrera-Gomez, A., Cortazar-Martínez, O., Rey Raap, Natalia, Ledesma-García, J., Arenillas de la Puente, Ana, Arriaga, L. G., Consejo Nacional de Humanidades, Ciencias y Tecnologías (México), Rey Raap, Natalia [0000-0002-5003-0035], Arenillas de la Puente, Ana [0000-0002-5388-1169], Martínez Lázaro, Mendoza-Camargo, A. P., Rodriguez-Barajas, M. H., Espinosa-Lagunes, F. I., Salazar-Lara, Y., Herrera-Gomez, A., Cortazar-Martínez, O., Rey Raap, Natalia, Ledesma-García, J., Arenillas de la Puente, Ana, and Arriaga, L. G.

Abstract

Unsupported PdCo aerogels were successfully synthesized by means of microwave heating. The use of this heating methodology provides some advantages compared to conventional heating in terms of saving synthesis time and improved physicochemical properties (i.e., greater surface area and mesoporosity). The combination of palladium with cobalt reduces the dependence of the noble metal and increases the electrocatalytic performance in the ethanol oxidation reaction due to a higher percentage of Pd0 in the PdCo aerogel, confirmed using the X-ray photoelectron spectroscopy (XPS) technique. For the application in energy conversion electrochemical systems, the catalytic activity of aerogels was evaluated in a microfluidic fuel cell that uses ethanol as fuel, where the PdCo aerogel synthesized by microwave heating exhibited great performance with 330 mA cm-2 current density, tripling the value of the palladium-based aerogel.

Published
2023

188. Epidemiology of bacterial co-infections and risk factors in COVID-19-hospitalized patients in Spain: a nationwide study

Author

López-Herrero, R, primary, Sánchez-de Prada, L, additional, Tamayo-Velasco, A, additional, Lorenzo-López, M, additional, Gómez-Pesquera, E, additional, Sánchez-Quirós, B, additional, de la Varga-Martínez, O, additional, Gómez-Sánchez, E, additional, Resino, S, additional, Tamayo, E, additional, and Álvaro-Meca, A, additional

Published
2023
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