Producing more rice with less water from irrigated systems

Irrigation management / Water use efficiency / Crop production / Water requirements / Water balance / Rice / Water distribution / Irrigated farming / Productivity / On-farm research / Irrigation scheduling / Groundwater / Conjunctive use / Rehabilitation / Modernization / Farmer participation / Farming systems / Irrigation systems / Crop-based irrigation / Asia / Philippines / Sri Lanka / Bangladesh / China / Malaysia / USA

Avaliação da composição da uva e do vinho varietal 'Tempranillo' segundo a época de produção, na região do Vale do Submédio São Francisco.

O Vale do Submédio do São Francisco é a segunda região produtora de vinhos finos do Brasil, sendo responsável por 15% da produção nacional, com oito milhões de litros/ano

Local Spin Glass Order in 1D

We study the behavior of one dimensional Kac spin glasses as function of the interaction range. We verify by Montecarlo numerical simulations the crossover from local mean field behavior to global paramagnetism. We investigate the behavior of correlations and find that in the low temperature phase correlations grow at a faster rate then the interaction range. We completely characterize the growth of correlations in the vicinity of the mean-field critical region

Imagined and extended contact experiences and adolescent bystanders’ behavioral intentions in homophobic bullying episodes

Bystanders’ helping interventions in bias-based bullying are rare, although they have the potential to intervene on behalf of the victim and quickly stop the aggression. Two studies tested, experimentally, the impact of adolescents' imagined (Study 1, N = 113, Mage = 16.17) and extended contact experiences (Study 2, N = 174, Mage =15.79) on assertive bystanders’ behavioral intentions in the context of homophobic bullying, an under- researched but highly detrimental behavior that emerges mainly during early adolescence (Espelage et al., 2018). Potential mediators (empathic concern, social contagion concerns, and masculinity/femininity threat) were also examined. Results showed that female younger participants revealed more behavioral intentions to help victims of homophobic bullying, when asked to imagine an interaction with an outgroup member (Study 1). Younger participants revealed less masculinity/femininity threat in the positive extended contact condition, and female participants revealed less empathic concern in the negative extended contact condition (Study 2). Overall, these findings identify specific conditions (e.g., younger female) where indirect contact interventions (i.e., extended and imagined) are likely to have a stronger impact. Age and sex differences found illustrate how adolescents vary in their behavioral intentions, empathic concern and threat; and also highlight the need to further examine age and sex differences regarding responses to homophobic bullying episodes.info:eu-repo/semantics/publishedVersio

Mechanisms for spin suppression and orbital enhancement in M1 transitions: Critical assessment

9 págs.; 3 figs.; 3 tabs.We discuss different nuclear structure properties that may lead to spin suppression in magnetic dipole excitations (as well as in Gamow-Teller transitions). We especially compare the triaxial and the axial asymptotic deformation limits and show that the summed B(M1) strength can be quite different in the two cases. A connection between triaxial deformation and spin suppression is established. It is known, however, that modern Hartree-Fock calculations yield axially symmetric solutions for several nuclei which were previously thought to be triaxial. We show that taking into account the effects of higher shells can lead to an enhanced orbital contribution to M1 excitations without affecting ground-state magnetic moments. © 1989 The American Physical Society.This work was supported by a NATO Collaborative Research Grant (0702/87) and by the Department of Energy DE-FG05-86ER40299. One of us (E.M.G.) is also indebted to DGICYT (Spain) for partial financial support under Contract No. PB8710311.Peer Reviewe

Equilibrium Times for the Multicanonical Method

This work measures the time to equilibrium for the multicanonical method on the 2D-Ising system by using a new criterion, proposed here, to find the time to equilibrium, teq, of any sampling procedure based on a Markov process. Our new procedure gives the same results that the usual one, based on the magnetization, for the canonical Metropolis sampling on a 2D-Ising model at several temperatures. For the multicanonical method we found a power-law relationship with the system size, L, of teq=0.27(15) L^2.80(13), and with the number of energy levels to explore, kE, of teq=0.7(13) kE^1.40(11), in perfect agreement with the result just above. In addition, some kind of critical slowing down was observed around the critical energy. Our new procedure is completely general, and can be applied to any sampling method based on a Markov process.Comment: 7 pages, 5 eps figures, to be published in Int. J. Mod. Phys.

New convolutions weighted by Hermite functions and their applications

We introduce eight new convolutions weighted by multi-dimensional Hermite functions, prove two Young-type inequalities, and exhibit their applications in different subjects. One application consists in the study of the solvability of a very general class of integral equations whose kernel depends on four different functions. Necessary and sufficient conditions for the unique solvability of such integral equations are here obtained.publishe

On integral operators and equations generated by cosine and sine Fourier transforms

In this paper, we study some properties of a class of integral operators that depends on the cosine and sine Fourier transforms. In particular, we will exhibit properties related with their invertibility, the spectrum, Parseval type identities and involutions. Moreover, a new convolution will be proposed and consequent integral equations will be also studied in detail. Namely, we will characterize the solvability of two integral equations which are associated with the integral operator under study. Moreover, under appropriate conditions, the unique solutions of those two equations are also obtained in a constructive way.publishe

Determinação de polifenóis como subsídio para seleção de variedades do Banco Ativo de Germoplasma de Uva.

A proposta do presente trabalho é analisar os teores de polifenóis bioativos em variedades do Banco Ativo de Germoplasma (acessos) e/ou novas variedades em fase de criação (seleções), através da técnica de Cromatografia Líquida de Alta Eficiência (HPLC)