Víctor Santiago Carlotto Caillaux,
... in the Altiplano between the Cusco–Lagunillas and Urcos–Ayaviri fault systems created the transpressional Kayra basin. ... were controlled by the Cusco–Lagunillas and the Urcos–Ayaviri fault systems. The Maure, Tincopalca–Huacochullo and ...
Tópico(s): Geological and Tectonic Studies in Latin America
2013 - Elsevier BV | Tectonophysics
... could be made across the Cordillera Oriental between Urcos and the valley of Rio Madre de Dios. ... and sandstones occur west of the section, at Urcos. At its eastern half, east of Quincemil, vast ...
Tópico(s): Botany and Geology in Latin America and Caribbean
1946 - American Association of Petroleum Geologists | AAPG Bulletin
Enaidy Reynosa Navarro, Margit Julia Guerra Ayala, Walther Hernán Casimiro Urcos, Dolores Vélez Jiménez, Consuelo Nora Casimiro Urcos, Erick Oswaldo Salazar-Montoya, Javier Francisco Casimiro Urcos, Juan Carlos Callejas Torres,
The purpose of this research was to determine the relevance of the media in the prevention, education and contextual management of COVID-19. Methodology: descriptive non-experimental transectional research. An international survey validated by experts was applied, surveying 1082 people during a month. The countries with the highest participation were Peru, Colombia, Mexico, the United States and Russia. The data was processed using SPSS version 25. 64.7% of the respondents affirmed that the means ...
Tópico(s): COVID-19 and Mental Health
2021 - Science Park Research Organization and Counselling LTD | World Journal on Educational Technology Current Issues
... páginas un capítulo de "El mundo religioso de Urcos", obra que aparecerá próximamente y que es el ... Andina (IPA) del Cuzco. La parroquia piloto de Urcos comprende tres distritos de la población de Quispicanchis ...
Tópico(s): Cultural and Social Studies in Latin America
1970 - | Allpanchis
Johann Stamm, Juha Vierinen, Juan Miguel Urco, B. Gustavsson, Jorge L. Chau,
Abstract. A new incoherent scatter radar called EISCAT 3D is being constructed in northern Scandinavia. It will have the capability to produce volumetric images of ionospheric plasma parameters using aperture synthesis radar imaging. This study uses the current design of EISCAT 3D to explore the theoretical radar imaging performance when imaging electron density in the E region and compares numerical techniques that could be used in practice. Of all imaging algorithms surveyed, the singular value ...
Tópico(s): Ocean Waves and Remote Sensing
2021 - Copernicus Publications | Annales Geophysicae
J. Federico Conte, Jorge L. Chau, Juan Miguel Urco, Ralph Latteck, Juha Vierinen, Jacobo Salvador,
Abstract This paper presents for the first time results on winds, tides, gradients of horizontal winds, and momentum fluxes at mesosphere and lower thermosphere altitudes over southern Patagonia, one of the most dynamically active regions in the world. For this purpose, measurements provided by SIMONe Argentina are investigated. SIMONe Argentina is a novel multistatic specular meteor radar system that implements a Spread‐spectrum Interferometric Multistatic meteor radar Observing Network (SIMONe) ...
Tópico(s): Astro and Planetary Science
2021 - American Geophysical Union | Earth and Space Science
Ryan Volz, Jorge L. Chau, P. J. Erickson, Juha Vierinen, Juan Miguel Urco, Matthias Clahsen,
Abstract. Mesoscale dynamics in the mesosphere and lower thermosphere (MLT) region have been difficult to study from either ground- or satellite-based observations. For understanding of atmospheric coupling processes, important spatial scales at these altitudes range between tens and hundreds of kilometers in the horizontal plane. To date, this scale size is challenging observationally, so structures are usually parameterized in global circulation models. The advent of multistatic specular meteor ...
Tópico(s): Astro and Planetary Science
2021 - Copernicus Publications | Atmospheric measurement techniques
Jorge L. Chau, R. Marino, Fabio Feraco, Juan Miguel Urco, Gerd Baumgarten, Franz‐Josef Lübken, W. K. Hocking, Carsten Schult, Toralf Renkwitz, Ralph Latteck,
Abstract The polar summer mesosphere is the Earth's coldest region, allowing the formation of mesospheric ice clouds. These ice clouds produce strong polar mesospheric summer echoes (PMSE) that are used as tracers of mesospheric dynamics. Here, we report the first observations of extreme vertical drafts (50 ) in the mesosphere obtained from PMSE, characterized by velocities more than five standard deviations larger than the observed vertical wind variability. Using aperture synthesis radar imaging, ...
Tópico(s): Methane Hydrates and Related Phenomena
2021 - American Geophysical Union | Geophysical Research Letters
Jorge L. Chau, Juan Miguel Urco, Juha Vierinen, Brian J. Harding, Matthias Clahsen, N. Pfeffer, K. Kuyeng, Marco Milla, P. J. Erickson,
Abstract The mesosphere and lower thermosphere (MLT) region is dominated globally by dynamics at various scales: planetary waves, tides, gravity waves, and stratified turbulence. The latter two can coexist and be significant at horizontal scales less than 500 km, scales that are difficult to measure. This study presents a recently deployed multistatic specular meteor radar system, SIMONe Peru, which can be used to observe these scales. The radars are positioned at and around the Jicamarca Radio Observatory, ...
Tópico(s): Solar and Space Plasma Dynamics
2020 - American Geophysical Union | Earth and Space Science
Juan Miguel Urco, Jorge L. Chau, Tobias Weber, Juha Vierinen, Ryan Volz,
Since the 1950s, specular meteor radars (SMRs) have been used to study the mesosphere and lower thermosphere (MLT) dynamics. Atmospheric parameters derived from SMRs are highly dependent on the number of detected meteors and the accuracy of the meteors' locations. Recently, incoherent and coherent multiple-input-multiple-output (MIMO) radar approaches combined with waveform diversity have been proposed to increase the number of detected meteors and to improve time, altitude, and horizontal resolution ...
Tópico(s): Radar Systems and Signal Processing
2019 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Geoscience and Remote Sensing
Marlon P. Saavedra, Jan E. Conn, Freddy Alava, Gabriel Carrasco-Escobar, Catharine Prussing, Sara A. Bickersmith, Jorge L. Sangama, Carlos Fernández-Miñope, Mitchel Guzmán-Guzmán, Carlos Tong, Carlos Valderrama‐Ardila, Joseph M. Vinetz, Dionicia Gamboa, Marta Moreno,
... four communities in 2016–2017 on the Napo (Urco Miraño, URC; Salvador, SAL) and Mazán Rivers (Visto ...
Tópico(s): Fish Biology and Ecology Studies
2019 - BioMed Central | Parasites & Vectors
Jorge L. Chau, Juan Miguel Urco, Victor Avsarkisov, Juha Vierinen, Ralph Latteck, Chris Hall, Masaki Tsutsumi,
Abstract We present and characterize in time and three spatial dimensions a Kelvin‐Helmholtz Instability (KHI) event from polar mesospheric summer echoes (PMSE) observed with the Middle Atmosphere Alomar Radar System. We use a newly developed radar imaging mode, which observed PMSE intensity and line of sight velocity with high temporal and angular resolution. The identified KHI event occurs in a narrow layer of 2.4 km thickness centered at 85 km altitude, is elongated along north‐south direction, ...
Tópico(s): Oceanographic and Atmospheric Processes
2019 - American Geophysical Union | Geophysical Research Letters
Juha Vierinen, Jorge L. Chau, H. Charuvil, Juan Miguel Urco, Matthias Clahsen, Victor Avsarkisov, R. Marino, Ryan Volz,
There are few observational techniques for measuring the distribution of kinetic energy within the mesosphere with a wide range of spatial and temporal scales. This study describes a method for estimating the three‐dimensional mesospheric wind field correlation function from specular meteor trail echoes. Each radar echo provides a measurement of a one‐dimensional projection of the wind velocity vector at a randomly sampled point in space and time. The method relies on using pairs of such measurements ...
Tópico(s): Astro and Planetary Science
2019 - American Geophysical Union | Earth and Space Science
Jorge L. Chau, Juan Miguel Urco, Juha Vierinen, Ryan Volz, Matthias Clahsen, Nico Pfeffer, Jörg Trautner,
Abstract. Typical specular meteor radars (SMRs) use one transmitting antenna and at least a five-antenna interferometric configuration on reception to study the mesosphere and lower thermosphere (MLT) region. The interferometric configuration allows the measurement of the angle-of-arrival (AOA) of the detected meteor echoes, which in turn is needed to derive atmospheric parameters (e.g., mean winds, momentum fluxes, temperatures, and neutral densities). Recently, we have shown that coherent MIMO configurations ...
Tópico(s): Microwave Imaging and Scattering Analysis
2019 - Copernicus Publications | Atmospheric measurement techniques
Juan Miguel Urco, Jorge L. Chau, Tobias Weber, Ralph Latteck,
Abstract. Polar mesospheric summer echoes (PMSEs) are very strong radar echoes caused by the presence of ice particles, turbulence, and free electrons in the mesosphere over polar regions. For more than three decades, PMSEs have been used as natural tracers of the complicated atmospheric dynamics of this region. Neutral winds and turbulence parameters have been obtained assuming PMSE horizontal homogeneity on scales of tens of kilometers. Recent radar imaging studies have shown that PMSEs are not ...
Tópico(s): Meteorological Phenomena and Simulations
2019 - Copernicus Publications | Atmospheric measurement techniques
Juan Miguel Urco, Jorge L. Chau, Marco Milla, Juha Vierinen, Tobias Weber,
Multiple-input multiple-output (MIMO) radar techniques make use of multiple transmitters and multiple receivers to improve the spatial characterization of targets. In the case where the Bragg scattering k → -vector can be assumed to be the same for all transmit-receive paths, MIMO methods can be seen as a way of increasing the number of effective receivers. In the last decades, there has been scientific interest in determining the spatial characteristics of ionospheric and atmospheric irregularities ...
Tópico(s): Ocean Waves and Remote Sensing
2018 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Geoscience and Remote Sensing
Diamantina Moreno-Gutierrez, Alejandro Llanos‐Cuentas, Jose Barboza, Juan Contreras‐Mancilla, Dionicia Gamboa, Hugo Rodríguez, Gabriel Carrasco-Escobar, Raphaël Boreux, Marie‐Pierre Hayette, Philippe Beutels, Niko Speybroeck, Angel Rosas‐Aguirre,
... riverine communities (Gamitanacocha, Primero de Enero, Libertad and Urco Miraño). In each intervention, all inhabitants were visited ...
Tópico(s): Computational Drug Discovery Methods
2018 - Multidisciplinary Digital Publishing Institute | International Journal of Environmental Research and Public Health
Consolacion Y. Ragasa, Roderick D. de Luna, Joy G. Hofileña,
... DOST-PCASTRD) and the University Research Coordination Office (URCO) of De La Salle University are gratefully acknowledged.
Tópico(s): Phytochemistry and Bioactive Compounds
2005 - Taylor & Francis | Natural Product Research
... same intensity. The fertile river valley lands between Urcos (Quispicanchis) and the Quispicanchis-Cuzco border were the ...
Tópico(s): Colonialism, slavery, and trade
2000 - Duke University Press | Hispanic American Historical Review
Andrew I. Maclsaac, Stephen G. Ellis, David W.M. Muller, Eric J. Topol, Patrick L. Whitlow,
... place 81 Palmaz‐Schatz (PS) stents, 21 Giant‐urco‐Roubin (GR), and 32 Wiktor (W) stents. PS ...
Tópico(s): Coronary Interventions and Diagnostics
1994 - Wiley | Catheterization and Cardiovascular Diagnosis
Rafiq R.A. Abou-Shaaban, Abdullah Alangari, Kamal E. H. ElTahir, K. I. Al‐Khamis, O. M. Mirghani,
... both ripe and unripe Cordia obliqua (RCo and URCo) decreased rabbit blood pressure and stimulated the respiratory ...
Tópico(s): Ziziphus Jujuba Studies and Applications
1989 - Wiley | Phytotherapy Research
F B McCord, M D Shields, Archibald T. McNeil, Henry L. Halliday, G. McClure, M M Reid,
... of Galen was treated by embolisation using Giant-urco coils. Doppler ultrasound examination showed that blood flow ...
Tópico(s): Traumatic Brain Injury and Neurovascular Disturbances
1987 - BMJ | Archives of Disease in Childhood
” Han de volver a Omapacha que fué quien los creo. » (Dioses y hombres de Huarochiri) . El zorro de abajo : « … Este mundo de abajo es el mio y comienza en el tuyo… » (J. M. Arguedas). Moi, don Juan Santacruz Pachacuti Yamqui Salcamaygua, chrétien par la grâce de Dieu notre Seigneur, naturel des pueblos de Santiago de Hananguayca et Huringuayca, Canchi de Orcosuyu, entre Canas et Canchis de Collasuyo, fils légitime de don Felipe Condorcanqui et de dona Maria Guayrotari. Lorsque en 1613, 80 ans environ après la conquête ...
Tópico(s): Indigenous Cultures and Socio-Education
1978 - Cambridge University Press | Annales Histoire Sciences Sociales
... Cachora, junto con los pueblos de Sayhuite y Urco. Este artículo demuestra también que los españoles concedieron ...
Tópico(s): Latin American history and culture
2005 - Institut Français d'Études Andines | Bulletin de l’Institut français d’études andines
H. U. Frey, S. B. Mende, R. R. Meier, Ulas Kamacı, Juan Miguel Urco, Farzad Kamalabadi, S. England, T. J. Immel,
Abstract The NASA Ionospheric Connection Explorer (ICON) was launched in October 2019 and has been observing the upper atmosphere and ionosphere to understand the sources of their strong variability, to understand the energy and momentum transfer, and to determine how the solar wind and magnetospheric effects modify the internally-driven atmosphere-space system. The Far Ultraviolet Instrument (FUV) supports these goals by observing the ultraviolet airglow in day and night, determining the atmospheric ...
Tópico(s): Solar and Space Plasma Dynamics
2023 - Springer Science+Business Media | Space Science Reviews
Produção Nacional
Eder A Chilquillo Torres, Joaquina Albán Castillo, A. Muñoz,
... Cuatro comunidades fueron estudiadas: San Antonio, Pencapampa, Lumac Urco y Quipachacha. Treinta y seis personas de ambos ...
Tópico(s): Environmental and Cultural Studies in Latin America and Beyond
2018 - | Revista Científica UNTRM Ciencias Naturales e Ingeniería
Juan Miguel Urco, Farzad Kamalabadi, Ulas Kamacı, Brian J. Harding, H. U. Frey, S. B. Mende, J. D. Huba, S. England, T. J. Immel,
Abstract We present a method for estimating incident photoelectrons' energy spectra as a function of altitude by combining global scale far‐ultraviolet (FUV) and radio‐occultation (RO) measurements. This characterization provides timely insights important for accurate interpretation of ionospheric parameters inferred from the recently launched Ionospheric Connection Explorer (ICON) observations. Quantification of photoelectron impact is enabled by the fact that conjugate photoelectrons (CPEs) directly ...
Tópico(s): Solar and Space Plasma Dynamics
2021 - American Geophysical Union | Geophysical Research Letters
D. L. Hysell, Pragya Sharma, Miguel Urco, Marco Milla,
Abstract Inverse methods involving compressive sensing are tested in the application of two‐dimensional aperture‐synthesis imaging of radar backscatter from field‐aligned plasma density irregularities in the ionosphere. We consider basis pursuit denoising, implemented with the fast iterative shrinkage thresholding algorithm, and orthogonal matching pursuit (OMP) with a wavelet basis in the evaluation. These methods are compared with two more conventional optimization methods rooted in entropy maximization ( ...
Tópico(s): Advanced SAR Imaging Techniques
2019 - Wiley | Radio Science
José María Guevara D., José Refugio Santamaría Aguirre, Esther Valencia, José María Guevara G., Fernando Williams, Elizabeth Cuéllar, Mirtha Barboza, Wini Agurto,
... pyogenes. Diseño: Estudio transversal. Lugar: Hospital I Higos Urco, EsSalud, Chachapoyas, Amazonas, e Instituto de Medicina Tropical ...
Tópico(s): Streptococcal Infections and Treatments
2013 - National University of San Marcos | Anales de la Facultad de Medicina
... y un análisis exhaustivo de la figura del Urco en Galicia y Asturias. Para ello se parte ... actualidad. Asimismo, se abordan tradiciones asociadas erróneamente al Urco, se repasan las principales interpretaciones formuladas para su ...
Tópico(s): Historical and socio-economic studies of Spain and related regions
2020 - University of Jaén | Boletín de Literatura Oral