Results 41 to 50 of about 390,099 (273)

Desarrollo de set-up experimental para mediciones de magnetoimpedancia [PDF]

, 2011
En este trabajo se explica el efecto de magnetoimpedancia y se presenta un sistema completamente automatizado desarrollado para medir dicha propiedad en cintas e hilos ferromagnéticos.
Conde Garrido, Juan Manuel, Silveyra, Josefina María   +1 more
core  

Ultrasound features in early pregnancy for predicting abnormal karyotype in first‐trimester miscarriage

Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 3, Page 376-384, March 2026.
ABSTRACT Objective To investigate whether combining abnormal morphological features observed on ultrasound in live pregnancies that ended in a first‐trimester miscarriage can predict an abnormal karyotype. Methods This retrospective observational cohort study was conducted at the early‐pregnancy assessment unit at University College London Hospital ...
T. Setty, S. L. Kastora, T. Tellum, J. Farren, E. Jauniaux, D. Jurkovic   +5 more
wiley   +1 more source

Polar S810 como recurso alternativo ao eletrocardiograma no teste de exercício de 4 segundos Polar S810 como recurso alternativo al electrocardiograma en la prueba de ejercicio de 4 segundos Polar S810 as an alternative resource to the use of the electrocardiogram in the 4-second exercise test

Arquivos Brasileiros de Cardiologia, 2010
FUNDAMENTO: O teste de exercício de 4 segundos (T4s) avalia o tônus vagal cardíaco durante o transiente inicial da frequência cardíaca (FC), em exercício dinâmico súbito, por meio da identificação do índice vagal cardíaco (IVC) obtido a partir do ...
Alan Santos Pimentel, Eduardo da Silva Alves, Rafael de Oliveira Alvim, Rogério Tasca Nunes, Carlos Magno Amaral Costa, Júlio Cesar Moraes Lovisi, Jorge Roberto Perrout de Lima   +6 more
doaj  

Temporal variations in characteristics of the El Chichón stratospheric cloud

Geofísica Internacional, 1984
Durante el periodo comprendido desde abril hasta diciembre de 1982 se hicieron mediciones y muestreos in situ de la nube de la erupción de El Chichón, a 18 - 21 km de altitud, para examinar las características físicas y químicas de las partículas de ...
R.L. Chuan, D.C. Woods
doaj   +1 more source

Comparación de los resultados de las mediciones in situ del aislamiento acústico al ruido aéreo de fachadas, mediante la utilización de los métodos globales con altavoces y con ruido de aviones. [PDF]

, 2000
En este trabajo se comparan los resultados experimentales de las mediciones in situ del aislamiento acústico al ruido aéreo de fachadas de recintos, por aplicación en cada uno de los recintos de dos métodos globales de la Norma EN ISO 140-5, Agosto 1998.
Díaz Sanchidrián, César, Pedrero González, Antonio   +1 more
core  

Beyond species means – the intraspecific contribution to global wood density variation

New Phytologist, Volume 249, Issue 6, Page 2630-2651, March 2026.
Summary Wood density is central for estimating vegetation carbon storage and a plant functional trait of great ecological and evolutionary importance. However, the global extent of wood density variation is unclear, especially at the intraspecific level. We assembled the most comprehensive wood density collection to date, including 109 626 records from
Fabian Jörg Fischer, Jérôme Chave, Amy Zanne, Tommaso Jucker, Alex Fajardo, Adeline Fayolle, Renato Augusto Ferreira de Lima, Ghislain Vieilledent, Hans Beeckman, Wannes Hubau, Tom De Mil, Daniel Wallenus, Ana María Aldana, Esteban Alvarez‐Dávila, Luciana F. Alves, Deborah M. G. Apgaua, Fátima Arcanjo, Jean‐François Bastin, Andrii Bilous, Philippe Birnbaum, Volodymyr Blyshchyk, Joli Borah, Vanessa Boukili, J. Julio Camarero, Luisa Casas, Roberto Cazzolla Gatti, Jeffrey Q. Chambers, Ezequiel Chimbioputo Fabiano, Brendan Choat, Georgina Conti, Will Cornwell, Javid Ahmad Dar, Ashesh Kumar Das, Magnus Dobler, Dao Dougabka, David P. Edwards, Robert Evans, Daniel Falster, Philip Fearnside, Olivier Flores, Nikolaos Fyllas, Jean Gérard, Rosa C. Goodman, Daniel Guibal, L. Francisco Henao‐Diaz, Vincent Hervé, Peter Hietz, Jürgen Homeier, Thomas Ibanez, Jugo Ilic, Steven Jansen, Rinku Moni Kalita, Tanaka Kenzo, Liana Kindermann, Subashree Kothandaraman, Martyna Kotowska, Yasuhiro Kubota, Patrick Langbour, James Lawson, André Luiz Alves de Lima, Roman Mathias Link, Anja Linstädter, Rosana López, Cate Macinnis‐Ng, Luiz Fernando S. Magnago, Adam R. Martin, Ashley M. Matheny, James K. McCarthy, Regis B. Miller, Arun Jyoti Nath, Bruce Walker Nelson, Marco Njana, Euler Melo Nogueira, Alexandre Oliveira, Rafael Oliveira, Mark Olson, Yusuke Onoda, Keryn Paul, Daniel Piotto, Phil Radtke, Onja Razafindratsima, Tahiana Ramananantoandro, Jennifer Read, Sarah Richardson, Enrique G. de la Riva, Oris Rodríguez‐Reyes, Samir G. Rolim, Victor Rolo, Julieta A. Rosell, Roberto Salguero‐Gómez, Nadia S. Santini, Bernhard Schuldt, Luitgard Schwendenmann, Arne Sellin, Timothy Staples, Pablo R. Stevenson, Somaiah Sundarapandian, Masha T. van der Sande, Bernard Thibaut, David Yue Phin Tng, José Marcelo Domingues Torezan, Boris Villanueva, Aaron Weiskittel, Jessie Wells, S. Joseph Wright, Kasia Zieminska   +105 more
wiley   +1 more source

Lidar measurements of stratospheric aerosol content and depolarization ratios after the eruption of El Chichón volcano: measurements at Nagoya, Japan

Geofísica Internacional, 1984
Después de la erupción de "El Chichón", se observó un enorme aumento en la dispersión de fondo de la luz desde la capa de aerosol estratosférico, utilizando un lidar de rubí en Nagoya, Japón (35ºN, 137ºW).En la parte inferior de la capa principal de ...
S. Hayashida, A. Kobayashi, Y. Iwasaka
doaj   +1 more source

External Validation of Cardiovascular Risk Scores in the Southern Cone of Latin America: Which Predicts Better? [PDF]

, 2018
Introducción: La estimación inexacta del riesgo cardiovascular poblacional puede llevar a un manejo inadecuado de las intervenciones médicas preventivas, como, por ejemplo, el uso de estatinas.
Danaei, Goodarz, Gulayin, Pablo Elías, Gutierrez, Laura, Irazola, Vilma, Lanas, Fernando, Poggio, Rosana, Ponzo, Jaqueline, Rubinstein, Adolfo Luis   +7 more
core  

Enhancing multitasking capacity: An acoustic tagging and sampling methodology for the spiny butterfly ray (Gymnura altavela) in the Canary Islands

Ecological Solutions and Evidence, Volume 7, Issue 1, January–March 2026.
To overcome challenges in studying elusive benthic elasmobranchs, a comprehensive, rapid methodology was developed and applied to 133 Spiny Butterfly Rays in Gran Canaria and Tenerife between 2020 and 2024. This approach integrated internal tagging with acoustic and external T‐bar tags, alongside biological sampling and ultrasound assessments, all ...
Ana Espino‐Ruano, Jose J. Castro, Airam Guerra‐Marrero, Lorena Couce‐Montero, Ángel Curros‐Moreno, Francesco Grande, Tomas Bañeras, Pablo García‐Salinas, Gustavo Montero‐Hernández, María José Caballero, Estíbaliz Parras‐García, Leticia Curbelo‐Muñoz, David Jiménez‐Alvarado   +12 more
wiley   +1 more source

Unifying microorganisms and macrograzers in intertidal rocky shore ecological networks

Ecology, Volume 107, Issue 1, January 2026.
Abstract Over the past decades, our understanding of the vital role microbes play in ecosystem processes has greatly expanded. However, we still have limited knowledge about how microbial communities interact with larger organisms. Many existing representations of microbial interactions are based on co‐occurrence patterns, which do not provide clear ...
Clara Arboleda‐Baena, Claudia Belén Pareja, Javiera Poblete, Eric L. Berlow, Hugo Sarmento, Ramiro Logares, Rodrigo De la Iglesia, Sergio A. Navarrete   +7 more
wiley   +1 more source