Results 31 to 40 of about 11,975 (136)

Caracterización de escorias de cobre de fundiciones chilenas del Siglo XIX

Revista de Metalurgia, 2016
El objetivo de este trabajo es caracterizar 4 escorias de fundiciones de cobre del siglo XIX, procedentes de vertederos abandonados en la Región de Atacama - Chile, utilizando las técnicas de fluorescencia de rayos X (FRX), difracción de rayos X (DRX ...
Amin Nazer, Jordi Payá, María Victoria Borrachero, José Monzó   +3 more
doaj   +1 more source

Symplastic and apoplastic pathways for local distribution of silicon in rice leaves

New Phytologist, Volume 247, Issue 3, Page 1280-1289, August 2025.
Summary Silicon (Si) is highly accumulated in both the leaf blade and sheath of rice, but the transporter mediating the local distribution of Si between these two tissues remains unidentified. We investigated the role of an aquaporin, OsLsi6, in the local distribution of Si in rice leaves.
Sheng Huang, Naoki Yamaji, Noriyuki Konishi, Namiki Mitani‐Ueno, Jian Feng Ma   +4 more
wiley   +1 more source

Kinetic and Spectroscopic Studies of Transient Species Prepared by Irmpd

Laser Chemistry, Volume 11, Issue 3-4, Page 163-167, 1991., 1991
Infrared multiple photon absorption is known to be observed in some triatomic and most polyatomic molecules. When the number of absorbed photons is high enough the process leads to photodissociation and excess energy is released as vibrational, rotational and translational energy in the electronic ground state of the fragments.
F. Castaño, A. Ortiz De Zárate, J. A. Fernández, M. N. Sánchez Rayo   +3 more
wiley   +1 more source

Contaminación ondulatoria

Ingeniería, 2011
Los efectos producidos por los fenómenos ondulatorios comprenden beneficios  muy importantes prara nuestra civilización, pero también, dependiendo principalmente de su nivel de intensidad, es posible que cada uno de los tipos de ondas caracterizado por ...
Alvar Saborío Ruiz
doaj   +1 more source

Middle Pleistocene revelations: unravelling taphonomic processes in mammals including Mesotherium cristatum (Mesotheriidae, Notoungulata), Corralito Site, Córdoba Province, Argentina

Palaeontology, Volume 68, Issue 4, July/August 2025.
Abstract Taphonomic studies of Cenozoic mammals are scarce. We report a study of the taphonomy of the Corralito site (Middle Pleistocene to Holocene), Córdoba Province, Argentina, which documents the last population of the South American native ungulate typotherid Mesotherium cristatum. We discovered two specimens of M.
Marcos Fernández‐Monescillo, Eugenia Romero‐Lebrón, María D. Pesquero, Augusto Haro, Pablo E. Rodríguez, Jerónimo Krapovickas, Adan A. Tauber   +6 more
wiley   +1 more source

PELÍCULAS DELGADAS DE TiO2 MODIFICADO CON Co PARA SU APLICACIÓN EN SISTEMAS ELECTROCATALÍTICOS Y FOTOCATALÍTICOS [PDF]

, 2014
En este trabajo se reporta la síntesis de películas delgadas de óxido de titanio (TiO2) modificadas con cobalto (Co). Los depósitos se realizaron utilizando una configuración alternativa a la ablación láser, conocida como deposito por láser pulsado de ...
Perez Alvarez, Jonatan, Solis Casado, Dora Alicia   +1 more
core  

H218O vapour labelling reveals evidence of radial Péclet effects, but in not all leaves

New Phytologist, Volume 244, Issue 4, Page 1263-1274, November 2024.
Summary Contradictory evidence exists regarding the relevance of Péclet‐like gradients in leaf water isotopes, making it difficult to accurately predict variation in isotope composition. Here, we use H218O vapour labelling to directly test whether leaf water isotopes diffuse back into the xylem to be carried forward to more distal leaf portions ...
Margaret M. Barbour, Melissa A. White, Lulu Liu   +2 more
wiley   +1 more source

Cuantificación nefelométrica de proteínas plasmáticas Condiciones de estandarización

Biomédica: revista del Instituto Nacional de Salud, 1982
Se presenta un estudio de tipo experimental para establecer las condiciones óptimas necesarias en la determinación de las concentraciones de una proteína plasmática por un procedimiento inmunoquímico de nefelometría de rayos laser.
Marybel Ayala, María Cristina Montenegro, Miguel A. Guzmán   +2 more
doaj   +1 more source

Los agujeros negros y las ondas del Doctor Einstein

, 2017
We describe the main scientific developments that lead LIGO project to the detection of the gravitational waves: general relativity, black holes and gravitational waves predictions; numerical relativity and the collision and coalescence simulations of ...
Rodriguez-Meza, Mario A.
core   +2 more sources

An oligo peptide transporter family member, OsOPT7, mediates xylem unloading of Fe for its preferential distribution in rice

New Phytologist, Volume 242, Issue 6, Page 2620-2634, June 2024.
Summary Iron (Fe) needs to be delivered to different organs and tissues of above‐ground parts for playing its multiple physiological functions once it is taken up by the roots. However, the mechanisms underlying Fe distribution are poorly understood.
Naoki Yamaji, Yuma Yoshioka, Sheng Huang, Takaaki Miyaji, Akimasa Sasaki, Jian Feng Ma   +5 more
wiley   +1 more source