Results 51 to 60 of about 20,363 (232)

Carbon dioxide concentration in Mediterranean greenhouses : how much lost production? [PDF]

, 2007
In the absence of artificial supply of carbon dioxide in the greenhouse environment, the CO2 absorbed in the process of photosynthesis must ultimately come from the external ambient through the ventilation openings.
Dimauro, B., Gazquez, J.C., Incrocci, L., Stanghellini, C.   +3 more
core   +3 more sources

Using UPLC-MS/MS for Characterization of Active Components in Extracts of Yupingfeng and Application to a Comparative Pharmacokinetic Study in Rat Plasma after Oral Administration

Molecules, 2017
Yupingfeng (YPF), a famous traditional Chinese medicine, which contains a large array of compounds, has been effectually used in health protection. A two-dimensional liquid chromatography (2D-LC) combined with quadrupole time-of-flight mass spectrometry (
Meng-Qi Jia, Ye-Juan Xiong, Yun Xue, Yan Wang, Chao Yan   +4 more
doaj   +1 more source

Nuclear isotope thermometry [PDF]

, 2000
We discuss different aspects which could influence temperatures deduced from experimental isotopic yields in the multifragmentation process. It is shown that fluctuations due to the finite size of the system and distortions due to the decay of hot ...
Donangelo, R., Gelbke, C. K., Lynch, W. G., Souza, S. R., Tan, W. P., Tsang, M. B.   +5 more
core   +2 more sources

Costos de plantación y siembra directa de Prosopis flexuosa var. depressa (Fabaceae) para restauración ecológica

Acta Botanica Mexicana, 2022
Antecedentes y Objetivos: La capacidad para llevar a cabo una restauración ecológica en forma práctica requiere que sea considerada tanto la probabilidad de éxito en términos ecológicos como los costos económicos.
Daniel R. Pérez, Cristian Ceballos, María Elena Oneto   +2 more
doaj   +1 more source

A mollified Ensemble Kalman filter

, 2010
It is well recognized that discontinuous analysis increments of sequential data assimilation systems, such as ensemble Kalman filters, might lead to spurious high frequency adjustment processes in the model dynamics.
Anderson, Ballabrera-Poy, Bergemann, Bloom, Burgers, Cotter, Evensen, Friedrichs, García-Archilla, Gaspari, Hamill, Hoke, Houtekamer, Houtekamer, Izaguirre, Kepert, Leimkuhler, Lorenz, Lorenz, Macpherson, Neef, Oke, Polavarapu, Salmon, Simon, Tippett, Wirosoetisno, Wirosoetisno   +27 more
core   +1 more source

Argentina: la expropiación de Repsol-YPF

Estudios Internacionales, 2016
En 2012, el gobierno argentino expropió el 51% de las acciones de Yacimientos Petrolíferos Fiscales (YPF), de propiedad de la empresa española Repsol. La medida, según el gobierno de la entonces presidenta Cristina Fernández, buscaba retomar el control estatal de la petrolera para asegurar el autoabastecimiento energético del país.
openaire   +2 more sources

Are There Arbitrage Opportunities in Credit Derivatives Markets? A New Test and an Application to the Case of CDS and ASPs [PDF]

, 2009
This paper analyzes possible arbitrage opportunities in credit derivatives markets using selffinancing strategies combining Credit Default Swaps and Asset Swaps Packages.
Mayordomo, Sergio, Peña Sánchez de Rivera, Juan Ignacio, Romo, Juan   +2 more
core   +1 more source

Metamorphosis, contradictions and crisis in the form of the post-neoliberal State in Argentina (2002-2015) [PDF]

Латиноамериканский исторический альманах
This article addresses the transformations of the form of the State in Argentina in the 2002–2015 period, from the per-spective of the changes that occurred in the mode of political domination.
Adrián Piva, Diego Pérez Roig
doaj   +1 more source

YPF-Tecnología (Y-TEC) y su rol en la política científico-tecnológica nacional

Ciencia Tecnología y Política, 2018
Se analiza la política científico-tecnológica de la Empresa Nacional Yacimientos Petrolíferos Fiscales (YPF) a partir de su renacionalización parcial en 2012, tomando el caso de su brazo tecnológico, YPF-Tecnología (Y-TEC).
Julián Bilmes
semanticscholar   +1 more source

New records and geographic distribution map of Bothropoides diporus Cope, 1862 (Reptilia: Viperidae) [PDF]

, 2011
We provide two new records of Bothropoides diporus for Neuquén province, northern Patagonia, Argentina. Both records are the second and third for this species in this province.
Avila, Luciano Javier, Janis Alvarez, Diego, Minoli, Ignacio   +2 more
core   +2 more sources