TNG Near-IR Photometry of five Galactic Globular Clusters

We present near--infrared J and K observations of giant stars in five metal-poor Galactic Globular Clusters (namely M3, M5, M10, M13 and M92) obtained at the Telescopio Nazionale Galileo (TNG). This database has been used to determine the main photometric properties of the red giant branch (RGB) from the (K,J-K) and, once combined with the optical data, in the (K,V-K) Color Magnitude Diagrams. A set of photometric indices (the RGB colors at fixed magnitudes) and the major RGB evolutionary features (slope, bump, tip) have been measured. The results have been compared with the relations obtained by Ferraro et al. 2000 and with the theoretical expectations, showing a very good agreement.Comment: 10 pages, 12 figures, accepted by Astronomy and Astrophysic

Ekstraksi Pektin dari Berbagai Macam Kulit Jeruk

Tanaman jeruk merupakan tanaman asli Indonesia dan hampir seluruh wilayah Indonesia dapat ditanami jeruk. Buah jeruk dapat dikonsumsi dalam bentuk buah segar ataupun hasil olahan. Limbah dari buah jeruk yang berupa kulit jeruk selain dapat dibuat manisan, juga dapat diekstrak pektinnya. Jeruk mempunyai kandungan pektin yang cukup tinggi, sekitar 30%. Pektin juga terdapat pada buah–buah lainnya seperti pisang, apel dan papaya. Pektin merupakan bahan aditif yang memiliki aplikasi luas pada industri makanan karena kemampuannya membentuk gel seperti untuk membuat jelly, se lai, desert dan sebagai penghalus tekstur. Selain itu, pektin juga dapat digunakan dalam bidang bakery fillings, yaitu pada penyiapan buah. Dalam bidang produksi susu, digunakan pada pengasaman susu dan minuman berprotein serta yogurt. Pektin dapat juga digunakan dalam bidang produk kesehatan dan farmasi. Penelitian ini bertujuan untuk mengetahui perbandingan pelarut dan zat terlarut yang diperlukan untuk mendapatkan yield pektin dengan jumlah yang maksimum. Dari hasil penelitian disimpulkan bahwa yield pektin meningkat seiring dengan kenaik an kecepatan pengadukan dan besarnya perbandingan berat kulit jeruk:volume pelarut. Semua kulit jeruk termasuk kedalam golongan high metoksil pektin. Kadar metoksil dan kekuatan pembentukan gel Jeruk manis> Jeruk Lokam> Jeruk Shantang> Jeruk Nipis. Kadar abu pektin dari berbagai macam kulit jeruk memenuhi standar mutu kering pektin

Citronella essential oil in the control and activation of coffee plants defense response against rust and brown eye spot.

Objetivou-se avaliar o óleo essencial de citronela no controle da ferrugem e cercosporiose e na ativação de respostas de defesa em cafeeiro

The surprising external upturn of the Blue Straggler radial distribution in M55

By combining high-resolution HST and wide-field ground based observations, in ultraviolet and optical bands, we study the Blue Straggler Star (BSS) population of the low density galactic globular cluster M55 (NGC 6809) over its entire radial extent. The BSS projected radial distribution is found to be bimodal, with a central peak, a broad minimum at intermediate radii, and an upturn at large radii. Similar bimodal distributions have been found in other globular clusters (M3, 47 Tucanae, NGC 6752, M5), but the external upturn in M55 is the largest found to date. This might indicate a large fraction of primordial binaries in the outer regions of M55, which seems somehow in contrast with the relatively low (\sim 10%) binary fraction recently measured in the core of this cluster.Comment: in press on Ap

Estabilidade de cultivares e linhagens de feijoeiro em diferentes ambientes no Estado de São Paulo.

O presente trabalho teve como objetivos realizar a avaliação genotípica de linhagens de feijoeiro no Estado de São Paulo pela estimativa dos valores genotípicos das linhagens para cada local e também para o ambiente médio de todos os locais. Estudos da adaptabilidade e estabilidade dos valores genotípicos preditos foram realizados pelo procedimento BLUP. A cultivar Graúna e a linhagem GEN 96A31 apresentaram superioridade média de 10% sobre a média geral dos 15 ambientes. Os valores foram computados já penalizando as linhagens pela instabilidade através dos locais e ao mesmo tempo capitalizando a capacidade de resposta (adaptabilidade) à melhoria do ambiente, usando propriedades intrínsecas ao método MHPRVG (Média Harmônica da Performance Relativa dos Valores Genéticos). Os métodos MHPRVG, Lin & Binns e Annicchiarico selecionaram, praticamente, as mesmas linhagens. Contudo, o método MHPRVG forneceu os resultados na própria escala de medição do caráter avaliado, os quais foram interpretados diretamente como valores genéticos para produtividade, estabilidade e adaptabilidade simultaneamente

Generation of squeezed light in a nonlinear asymmetric directional coupler

We show that a nonlinear asymmetric directional coupler composed of a linear waveguide and a nonlinear waveguide operating by nondegenerate parametric amplification is an effective source of single-mode squeezed light. This is has been demonstrated, under certain conditions and for specific modes, for incident coherent beams in terms of the quasiprobability functions, photon-number distribution and phase distribution.Comment: 19 pages, 5 figure

Controle Químico da Mancha de Ramulária (Ramularia areola) do Algodoeiro no Norte de Mato Grosso.

No Norte do Estado de Mato Grosso, os níveis de incidência e severidade da mancha de ramulária, causada pelo fungo Ramularia areola Atk, tem aumentado significativamente devido às práticas de manejo adotadas pelos produtores nas áreas cultivadas com o algodoeiro. O controle químico continua sendo a tática mais eficaz para o controle da doença, pois as cultivares disponíveis no mercado não apresentam níveis de resistência satisfatório ao patógeno. Os objetivos desse trabalho foram determinar a eficácia dos fungicidas Score, Eminent Gold, Caramba 90, Priori Top, Authority, Orkestra, OXI0091, Fezan Gold, IKF - 5411 400SC, Basf 750 02 F, ADA FF 0086/16, BAS 753 02F, DPX ? U7F30, A20259E, A16976A, Mertin, UPL 2000 e a testemunha (sem fungicida) no controle da mancha de ramulária, bem como determinar o efeito desses tratamentos com fungicidas na produção de algodão a campo. Os tratamentos foram realizados em intervalos de 12-15 dias, sendo a primeira aplicação aos 32 dias após a emergência das plântulas. Foram realizados um total de oito aplicações de cada tratamento. Os fungicidas utilizados neste experimento foram eficazes no controle da severidade da mancha de ramulária do algodoeiro quando comparados com o tratamento testemunha.bitstream/item/225527/1/Controle-quimico-mancha-2020.pd

Estimating Cotton Yield in the Brazilian Cerrado Using Linear Regression Models from MODIS Vegetation Index Time Series.

Abstract: Satellite remote sensing data expedite crop yield estimation, offering valuable insights for farmers’ decision making. Recent forecasting methods, particularly those utilizing machine learning algorithms like Random Forest and Artificial Neural Networks, show promise. However, challenges such as validation performances, large volume of data, and the inherent complexity and inexplicability of these models hinder their widespread adoption. This paper presents a simpler approach, employing linear regression models fitted from vegetation indices (VIs) extracted from MODIS sensor data on the Terra and Aqua satellites. The aim is to forecast cotton yields in key areas of the Brazilian Cerrado. Using data from 281 commercial production plots, models were trained (167 plots) and tested (114 plots), relating seed cotton yield to nine commonly used VIs averaged over 15-day intervals. Among the evaluated VIs, Enhanced Vegetation Index (EVI) and Triangular Vegetation Index (TVI) exhibited the lowest root mean square errors (RMSE) and the highest etermination coefficients (R2 ). Optimal periods for in-season yield prediction fell between 90 and 105 to 135 and 150 days after sowing (DAS), corresponding to key phenological phases such as boll development, open boll, and fiber maturation, with the lowest RMSE of about 750 kg ha−1 and R 2 of 0.70. The best forecasts for early crop stages were provided by models at the peaks (maximum value of the VI time series) for EVI and TVI, which occurred around 80–90 DAS. The proposed approach makes the yield predictability more inferable along the crop time series just by providing sowing dates, contour maps, and their respective VIs

Elastic scattering losses in the four-wave mixing of Bose Einstein Condensates

We introduce a classical stochastic field method that accounts for the quantum fluctuations responsible for spontaneous initiation of various atom optics processes. We assume a delta-correlated Gaussian noise in all initially empty modes of atomic field. Its strength is determined by comparison with the analytical results for two colliding condensates in the low loss limit. Our method is applied to the atomic four wave mixing experiment performed at MIT [Vogels {\it et. al.}, Phys. Rev. Lett. {\bf 89}, 020401, (2002)], for the first time reproducing experimental data

On the evolution of superposition of squeezed displaced number states with the multiphoton Jaynes-Cummings model

In this paper we discuss the quantum properties for superposition of squeezed displaced number states against multiphoton Jaynes-Cummings model (JCM). In particular, we investigate atomic inversion, photon-number distribution, purity, quadrature squeezing, Mandel $Q$ parameter and Wigner function. We show that the quadrature squeezing for three-photon absorption case can exhibit revivals and collapses typical to those occurring in the atomic inversion for one-photon absorption case. Also we prove that for odd number absorption parameter there is a connection between the evolution of the atomic inversion and the evolution of the Wigner function at the origin in phase space. Furthermore, we show that the nonclassical states whose the Wigner functions values at the origins are negative will be always nonclassical when they are evolving through the JCM with even absorption parameter. Also we demonstrate that various types of cat states can be generated via this system.Comment: 27 pages, 10 figure