PERIOD DETERMINATION FOR NEA (162421) 2000 ET70

Lightcurve analysis for (162421) 2000 ET70 was performed in collaboration with observers in Uruguay, Australia, and the United States from observations obtained during the asteroid’s favorable opposition in 2012. The synodic rotation period was found to be 8.947 ± 0.001 h and the lightcurve amplitude was 0.60 ± 0.07 mag

Modeling of Soybean under Present and Future Climates in Mozambique

Citation: Talacuece, M. A. D., Justino, F. B., Rodrigues, R. D., Flores, M. E. P., Nascimento, J. G., & Santos, E. A. (2016). Modeling of Soybean under Present and Future Climates in Mozambique. Climate, 4(2), 14. doi:10.3390/cli4020031This study aims to calibrate and validate the generic crop model (CROPGRO-Soybean) and estimate the soybean yield, considering simulations with different sowing times for the current period (1990-2013) and future climate scenario (2014-2030). The database used came from observed data, nine climate models of CORDEX (Coordinated Regional climate Downscaling Experiment)-Africa framework and MERRA (Modern Era Retrospective-Analysis for Research and Applications) reanalysis. The calibration and validation data for the model were acquired in field experiments, carried out in the 2009/2010 and 2010/2011 growing seasons in the experimental area of the International Institute of Tropical Agriculture (IITA) in Angonia, Mozambique. The yield of two soybean cultivars: Tgx 1740-2F and Tgx 1908-8F was evaluated in the experiments and modeled for two distinct CO2 concentrations. Our model simulation results indicate that the fertilization effect leads to yield gains for both cultivars, ranging from 11.4% (Tgx 1908-8F) to 15% (Tgx 1740-2Fm) when compared to the performance of those cultivars under current CO2 atmospheric concentration. Moreover, our results show that MERRA, the RegCM4 (Regional Climatic Model version 4) and CNRM-CM5 (Centre National de Recherches Meteorologiques - Climatic Model version 5) models provided more accurate estimates of yield, while others models underestimate yield as compared to observations, a fact that was demonstrated to be related to the model's capability of reproducing the precipitation and the surface radiation amount

An analysis of electricity generation with renewable resources in Germany

Germany has an experience of renewable energy policies that encourages their usage, achieving technological migration and the redesign of its power generation matrix, achieving 112 GW of renewable resources at 2017. The research presents an analysis between the energy policies and the electricity statistics, the results forecast a date in which they will reach the goal of 50% of annual generation of total electric power by renewable sources, a goal set in 2012

Recommendations for long-term home oxygen therapy in children and adolescents

Objective: To advise pediatricians, neonatologists, pulmonologists, pediatric pulmonologists, and other professionals in the area on the main indications and characteristics of long-term home oxygen therapy in children and adolescents.Data source: A literature search was carried out in the MEDLINE/PubMed database (1990 to 2011). Additionally, references from selected studies were included. As consistent scientific evidence does not exist for many aspects, some of the recommendations were based on clinical experience.Data synthesis: Long-term home oxygen therapy has been a growing practice in pediatric patients and is indicated in bronchopulnnonary dysplasia, cystic fibrosis, bronchiolitis obliterans, interstitial lung diseases, and pulmonary hypertension, among others. the benefits are: decrease in hospitalizations, optimization of physical growth and neurological development, improvement of exercise tolerance and quality of sleep, and prevention of pulmonary hypertension/cor pulmonale. the levels of oxygen saturation indicative for oxygen therapy differ from those established for adults with chronic obstructive pulmonary disease, and vary according to age and disease. Pulse oximetry is used to evaluate oxygen saturation; arterial blood gas is unnecessary. There are three available sources of oxygen: gas cylinders, liquid oxygen, and oxygen concentrators. the flows used are usually smaller, as are the number of hours/day needed when compared to the use in adults. Some diseases show improvement and oxygen therapy discontinuation is possible.Conclusions: Long-term home oxygen therapy is increasingly common in pediatrics and has many indications. There are relevant particularities when compared to its use in adults, regarding indications, directions for use, and monitoring. (C) 2013 Sociedade Brasileira de Pediatria. Published by Elsevier Editora Ltda. All rights reserved.Univ São Paulo Med Sch FMUSP, São Paulo, BrazilFMUSP, Inst Crianca, Hosp Clin, Pneumol Unit, São Paulo, BrazilSoc Pediat São Paulo, Dept Pneumol, São Paulo, BrazilUniv Estadual Campinas UNICAMP, Sch Med Sci, Campinas, SP, BrazilSoc Med & Cirurgia Campinas 2012 2014, Dept Pediat, Campinas, SP, BrazilUniversidade Federal de São Paulo UNIFESP, São Paulo, BrazilUniversidade Federal de São Paulo, Dept Pediat, Pediat Pneumol Sect, São Paulo, BrazilFMUSP, São Paulo, BrazilUniversidade Federal de São Paulo UNIFESP, São Paulo, BrazilUniversidade Federal de São Paulo, Dept Pediat, Pediat Pneumol Sect, São Paulo, BrazilWeb of Scienc

Utilización de un recinto de la Universidad Nacional de Luján como modelo experimental y demostrativo para la aplicación de técnicas de acondicionamiento natural de bajo costo

Un pequeño recinto dentro de la Universidad Nacional de Luján es utilizado por el equipo de trabajo desde hace diez años como modelo experimental y demostrativo para la aplicación de técnicas de acondicionamiento ambiental de bajo costo y mínimo consumo energético. Con anterioridad al inicio de esta experiencia, el recinto era conocido por su pésima respuesta ambiental, sobre todo en el período cálido. Sobre el mismo fueron aplicadas con el tiempo sucesivas mejoras siguiendo una metodología que apuntaba tanto a lo experimental como a lo pedagógico y demostrativo, dada la similitud constructiva que el recinto mostraba con las viviendas precarias que autoconstruyen sectores de menores recursos. En el trabajo se muestran las sucesivas técnicas utilizadas, los resultados parciales medidos como consecuencia de las mismas, hasta llegar al momento actual en que se demuestra la muy satisfactoria respuesta alcanzada en relación con el confort ambiental interior para cualquier época del año.For ten years, a research team has been using a small room at the National University of Lujan as an experimental demonstration model for the application of low-cost environmental conditioning energy-efficient techniques. Before starting this experience, the building was characterized for its poor environmental conditions, especially during the warm season. Over time, successive improvements were applied upon it following not only an experimental methodology but also educational and demonstrative ones, since this room had been made with similar building materials to the ones used in poor-quality housing of low-income self-builders. This paper shows the consecutive techniques applied and the measurement of the partial results obtained from the application of these techniques till the present time, which demonstrates a very satisfactory response related to the indoor environmental quality at any time of the year.Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES

Optical Absorption of CuO3_3 antiferromagnetic chains at finite temperatures

We use a high-statistic quantum Monte Carlo and Maximum Entropy regularization method to compute the dynamical energy correlation function (DECF) of the one-dimensional (1D) $S=1/2$ antiferromagnetic Heisenberg model at finite temperatures. We also present a finite temperature analytical ansatz for the DECF which is in very good agreement with the numerical data in all the considered temperature range. From these results, and from a finite temperature generalisation of the mechanism proposed by Lorenzana and Sawatsky [Phys. Rev. Lett. {\bf 74}, 1867 (1995)], we compute the line shape for the optical absorption spectra of multimagnon excitations assisted by phonons for quasi 1D compounds. The line shape has two contributions analogous to the Stokes and anti-Stokes process of Raman scattering. Our low temperature data is in good agreement with optical absorption experiments of CuO$_3$ chains in Sr$_2$CuO$_3$. Our finite temperature results provide a non trivial prediction on the dynamics of the Heisenberg model at finite temperatures that is easy to verify experimentally.Comment: 7 pages, 5 figure

Effective Lagrangians and Light Gravitino Phenomenology

We construct the low-energy effective lagrangian for a light gravitino coupled to the minimal supersymmetric standard model under the assumption that supersymmetry breaking is communicated to the observable sector dominantly through soft terms. Our effective lagrangian is written in terms of the spin-1/2 Goldstino (the longitudinal component of the gravitino) transforming under a non-linear realization of supersymmetry. In this lagrangian, the Goldstino is derivatively coupled and all couplings of the Goldstino to light fields are determined uniquely by the supersymmetry-breaking scale \sqrt{F}. This lagrangian is therefore a useful starting point for further investigation of the light gravitino in gauge-mediated supersymmetry breaking models. We show that the invisible width of the Z into Goldstinos gives the constraint \sqrt{F} > 140 GeV.Comment: 15 pages, LaTeX2e, 1 eps figure. Removed erroneous claim of coupling of photon to gravitino to photons at order M^2 E^2 / F^2. Strongest bound is from invisible Z width, giving F > (140 GeV)^

The European Eel NCCβ Gene Encodes a Thiazide-Resistant Na-Cl Cotransporter

The thiazide-sensitive Na-Cl cotransporter (NCC) is the major pathway for salt reabsorption in the mammalian distal convoluted tubule. NCC plays a key role in the regulation of blood pressure. Its inhibition with thiazides constitutes the primary baseline therapy for arterial hypertension. However, the thiazide-binding site in NCC is unknown. Mammals have only one gene encoding for NCC. The eel, however, contains a duplicate gene. NCCα is an ortholog of mammalian NCC and is expressed in the kidney. NCCβ is present in the apical membrane of the rectum. Here we cloned and functionally characterized NCCβ from the European eel. The cRNA encodes a 1043-amino acid membrane protein that, when expressed in Xenopus oocytes, functions as an Na-Cl cotransporter with two major characteristics, making it different from other known NCCs. First, eel NCCβ is resistant to thiazides. Single-point mutagenesis supports that the absence of thiazide inhibition is, at least in part, due to the substitution of a conserved serine for a cysteine at position 379. Second, NCCβ is not activated by low-chloride hypotonic stress, although the unique Ste20-related proline alanine-rich kinase (SPAK) binding site in the amino-terminal domain is conserved. Thus, NCCβ exhibits significant functional differences from NCCs that could be helpful in defining several aspects of the structure-function relationship of this important cotransporter