879 research outputs found
Branching fractions and charge asymmetries in charmless hadronic B decays at BaBar
No full textWe present measurements of branching fraction, polarization and charge asymmetry in charmless hadronic B decays with eta, eta', omega, and b_1 in the final state. All the results use the final BaBar dataset
Measurements of Time-Dependent CP Asymmetries in b\to s Penguin Dominated Hadronic B Decays at BaBar
No full textWe report measurements of Time-Dependent CP asymmetries in several b {yields} s penguin dominated hadronic B decays, where New Physics contributions may appear. We find no significant discrepancies with respect to the Standard Model expectations
STUDY OF CHARMONIUM RESONANCES IN THE GAMGAM -> K0S K+PI- AND GAMGAM -> K+K-PI+PI-PI0 PROCESSES
No full textWe study charmonium resonances produced via two-photon interactions and decaying to the K0S K+ PI- and K+ K- PI+ PI- PI0 final states, using data collected by the BaBar experiment, located at the PEP-II asymmetric e+e- storage ring at SLAC National Accelerator Laboratory.
We observe the eta_c(1S), chi_c0(1P) and
eta_c(2S) resonances produced in two-photon interactions and
decaying to K+ K- PI+ PI- PI0, with significances of 18.1, 5.4 and
5.3 standard deviations (including
systematic errors), respectively, and report 4.0sigma evidence of
the chi_c2(1P) decay to this final state.
We measure the eta_c(2S)mass and width in K0S K+ PI- decays, and
obtain the values m(eta_c(2S))= 3638.5 +/- 1.5 +/- 0.8 MeV/c^2 and
Gamma(eta_c(2S)) = 13.4 +/- 4.6 +/- 3.2 MeV, where
the first uncertainty is statistical and the second is systematic.
We measure the two-photon width times branching
fraction for the reported resonance signals, and search for
the chi_c2(2P) resonance, but no significant signal
is observed
Changes in soil phosphorus (P) fractions and P bioavailability after 10 years of continuous P fertilization
No full textPhosphorus fertilization modify soil P fractions differing in availability, but little is known about bioavailability of these pools for the crops when increasing P fertilizer rates in the medium term. Our objectives were to evaluate: i) changes in Bray-1 P content (extracted with 0,03 M NH4F and 0,1 M HCl) and soil P fractions as estimated by physical (Cambardella and Elliot method, POM-P) and chemical fractionation (Hedley method), ii) the relationship between these fractions and P bioavailability quantified in a test crop, and iii) the interaction with sulfur (S) fertilization after 10 years of continuous P and S fertilization. Soil samples were taken after 10 years in an experiment that followed a maize - full season-soybean - double-cropped wheat /soybean sequence that received P and S fertilization when cereals were sown. Treatments consisted of a factorial combination of three P rates (0, 20, and 40 kg P ha−1) and four S rates (0, 12, 24, and 36 kg S ha−1) applied to cereals from 2000 to 2010. After that, a maize used as a test crop was sown and P uptake was considered as bioavailable P. Soil samples were taken before sowing the test crop, and P in soil was fractionated chemically by the Hedley method and physically by wet sieving. After 10 years, when P fertilizer was not applied, soil Bray-1 P decreased 50 % respect to the initial P values, and increased up to 2.3 times when evaluating the highest P fertilizer rate. P fertilization did not change in POM-P. P soil labile (NaHCO3-Pi) and moderately labile (NaOH- Pi and HCl 1 M- Pi) inorganic fractions increased 83 %, 50 %, and 22 % in response to P addition, representing an increase of 4.2, 4.9, and 4.5 mg kg−1 of these fractions per 100 kg of applied P. Likewise, these fractions were related with P uptake in the maize test crop with 1.6, 1.5, and 1 kg of P uptake ha−1 in mg kg−1 increase in each of these fractions, respectively. Then, these fractions may be responsible for the legacy-P after 10 years of continuous fertilization in a Luvic Phaeozem of the Pampas region.EEA OliverosFil: Biassoni, María Micaela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Oliveros; ArgentinaFil: Biassoni, María Micaela. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Biassoni, María Micaela. Universidad Nacional de Rosario. Facultad de Ciencias Agrarias. Cátedra de Edafología; ArgentinaFil: Vivas, H. Actividad privada; ArgentinaFil: Gutiérrez Boem, Flavio Hernán. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Gutiérrez Boem, Flavio Hernán. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Fertilidad y Fertilizantes; Argentina.Fil: Salvagiotti, Fernando. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Oliveros; ArgentinaFil: Salvagiotti, Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin
Influence of dietary habits on thyroid status of a nomadic people, the Bororo shepherds, roaming a Central African region affected by severe iodine deficiency.
No full text¿Cuántos kilogramos de fósforo se necesitan para incrementar 1 ppm (partes por millón) de P-Bray en un Argiudol?
No full textEl objetivo de este trabajo fue: cuantificar el balance
de P y los cambios en el contenido de P-Bray
1 del suelo en respuesta a diez años de aplicaciones
continuas de P aplicadas a gramíneas en un suelo
Argiudol de Santa Fe.EEA OliverosFil: Biassoni, María Micaela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Oliveros; ArgentinaFil: Gutiérrez Boem, Flavio Hernán. Universidad de Buenos Aires. Facultad de Agronomia; ArgentinaFil: Vivas, Hugo. Asesor privado; AgentinaFil: Salvagiotti, Fernando. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Oliveros; Argentin
SDDs for high-rate and high-resolution electron spectroscopy
No full textSilicon Drift Detectors (SDDs) are a promising technology for electron spectroscopy, due to their excellent energy resolution and capability to sustain high interaction rate. We present a model based on a Geant4 simulation for the electron response. We then investigate the possibility to use a SDD as a versatile and compact spectrometer that can be operated with standard technologies
Hormonal and biochemical patterns in subjects from a new endemic goiter area of Centro African Republic.
No full textQuadri ormonologici dell' ipotiroidismo in un'area della Repubblica Centro Africana affetta da endemia gozzigena.
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