Results 31 to 40 of about 53,294 (188)

Alternativas experimentais na avaliação de famílias em programas de melhoramento genético do feijoeiro [PDF]

Pesquisa Agropecuária Brasileira, 2000
O objetivo deste trabalho foi avaliar o emprego do delineamento em blocos aumentados e de métodos de análise espacial nas etapas iniciais dos programas de melhoramento do feijoeiro (Phaseolus vulgaris L.). Foram avaliadas 121 famílias S2, provenientes de
ELAINE APARECIDA DE SOUZA, ISAIAS OLÍVIO GERALDI, MAGNO ANTONIO PATTO RAMALHO   +2 more
doaj   +1 more source

AGN X-ray variability in the XMM-COSMOS survey [PDF]

, 2013
We took advantage of the observations carried out by XMM in the COSMOS field during 3.5 years, to study the long term variability of a large sample of AGN (638 sources), in a wide range of redshift (0 ...
Bongiorno, A., Brusa, M., Cappelluti, N., Comastri, A., Gilli, R., Hasinger, G., Kartaltepe, J., Lanzuisi, G., Lusso, E., Merloni, A., Nandra, P. K., Ponti, G., Rosario, D., Salvato, M., Sanders, D., Schramm, M., Silverman, J., Steinhardt, C., Trakhtenbrot, B., Trump, J., Vignali, C.   +20 more
core   +2 more sources

X-ray Variability Characteristics of the Seyfert 1 Galaxy NGC 3783 [PDF]

, 2005
We have characterized the energy-dependent X-ray variability properties of the Seyfert~1 galaxy NGC 3783 using archival XMM-Newton and Rossi X-ray Timing Explorer data.
A. Markowitz, Lyubarskii Y. E., Mineshige S., Nowak M., Padovani P., Papadakis I., Papadakis I., Sunyaev R., Svensson R., Timmer J.   +9 more
core   +1 more source

Weighted ensemble transform Kalman filter for image assimilation [PDF]

Tellus: Series A, Dynamic Meteorology and Oceanography, 2013
This study proposes an extension of the Weighted Ensemble Kalman filter (WEnKF) proposed by Papadakis et al. (2010) for the assimilation of image observations.
Sebastien Beyou, Anne Cuzol, Sai Subrahmanyam Gorthi, Etienne Mémin   +3 more
doaj   +1 more source

Discovery of multiple Lorentzian components in the X-ray timing properties of the Narrow Line Seyfert 1 Ark 564

, 2007
We present a power spectral analysis of a 100 ksec XMM-Newton observation of the narrow line Seyfert 1 galaxy Ark~564. When combined with earlier RXTE and ASCA observations, these data produce a power spectrum covering seven decades of frequency which is
Arévalo, Arévalo, Axelsson, Axelsson, Belloni, Blandford, Botte, Brinkmann, Christopoulou, D. P. Summons, Edelson, Fabian, Gierliński, I. E. Papadakis, I. M. McHardy, Kotov, Lal, Lyubarskii, M. J. Page, Markowitz, McHardy, McHardy, McHardy, Miller-Jones, Nowak, Nowak, P. Arévalo, P. Uttley, Papadakis, Papadakis, Papadakis, Papadakis, Peterson, Pottschmidt, Pounds, Remillard, Revnivtsev, Romano, Schmitt, Summons, Turner, Uttley, Uttley, W. Brinkmann   +43 more
core   +1 more source

On the structure of Stanley-Reisner rings associated to cyclic polytopes [PDF]

, 2011
We study the structure of Stanley-Reisner rings associated to cyclic polytopes, using ideas from unprojection theory. Consider the boundary simplicial complex Delta(d,m) of the d-dimensional cyclic polytope with m vertices.
Boehm, Janko, Papadakis, Stavros Argyrios   +1 more
core   +4 more sources

Tip60 HAT activators as therapeutic modulators for Alzheimer’s disease

Nature Communications
Reduced histone acetylation in the brain causes transcriptional dysregulation and cognitive impairment that are key initial steps in Alzheimer’s disease (AD) etiology.
Akanksha Bhatnagar, Christina M. Thomas, Gu Gu Nge, Aprem Zaya, Rohan Dasari, Neha Chongtham, Bijaya Manandhar, Sandhya Kortagere, Felice Elefant   +8 more
doaj   +1 more source

Análise de vizinhança na avaliação de genótipos de cana-de-açúcar Neighborhood analysis in evaluation of sugarcane genotypes

Pesquisa Agropecuária Brasileira, 2009
O objetivo deste trabalho foi estudar diferentes covariáveis de competição em análises de vizinhança, e verificar sua eficiência no aumento da precisão experimental e as consequências no ordenamento de genótipos de cana-de-açúcar em termos de potencial ...
Liliam Silvia Candido, Dilermando Perecin, Marcos Guimarães de Andrade Landell, Bruno Ettore Pavan   +3 more
doaj   +1 more source

The scaling of the X-ray variability with black hole mass in AGN

, 2003
The relation between the 2-10 keV, long term, excess variance and AGN black hole mass is considered in this work. A significant anti-correlation is found between these two quantities in the sense that the excess variance decreases with increasing black ...
Barr, Belloni, Bian, Collier, Filippenko, George, Green, I. E. Papadakis, Kaspi, Lawrence, Lehto, Leighly, Lu, Lyubarskii, Markowitz, Markowitz, McHardy, Nagar, Nandra, Nandra, Oliva, Onken, Padovani, Papadakis, Papadakis, Papadakis, Pounds, Shakura, Shemmer, Shih, Tremaine, Treves, Turner, Uttley, Vaughan, Vaughan, Woo   +36 more
core   +2 more sources

Mapping River Bed Topography in Whitewater Rapids Using Bathymetric LiDAR

River Research and Applications, EarlyView.
ABSTRACT Bathymetric LiDAR captures river topography efficiently for clear and shallow water, but for mountain rivers, whitewater rapids still pose challenges. This study proposes a novel method to enable the extraction of bottom returns specifically in turbulent whitewater sections.
Jan Rhomberg‐Kauert, Theresa Himmelsbach, Florian Pöppl, Lucas Dammert, Martin Pfennigbauer, Gottfried Mandlburger   +5 more
wiley   +1 more source