Mechanisms of Spontaneous Current Generation in an Inhomogeneous d-Wave Superconductor

A boundary between two d-wave superconductors or an s-wave and a d-wave superconductor generally breaks time-reversal symmetry and can generate spontaneous currents due to proximity effect. On the other hand, surfaces and interfaces in d-wave superconductors can produce localized current-carrying states by supporting the T-breaking combination of dominant and subdominant order parameters. We investigate spontaneous currents in the presence of both mechanisms and show that at low temperature, counter-intuitively, the subdominant coupling decreases the amplitude of the spontaneous current due to proximity effect. Superscreening of spontaneous currents is demonstrated to be present in any d-d (but not s-d) junction and surface with d+id' order parameter symmetry. We show that this supercreening is the result of contributions from the local magnetic moment of the condensate to the spontaneous current.Comment: 4 pages, 5 figures, RevTe

Efeito da deficiência de energia na dieta sobre a população de protozoários ciliados do rúmen de bovinos

Ten young rumen-cannulated crossbred steers were randomly divided into two groups: a control group (C; n=4), which was fed a balanced diet for daily weight gain of 900g; and a pronounced energy-deprived group (PED; n=6), receiving 30% less of the required energy for maintenance. After 140 days of these alimentary regimes, rumen fluid and urine samples were collected for biochemical and functional tests, before feeding and at 1, 3, 6, and 9 hours after feeding. The energy-deprivation diet caused a significant reduction in the number of Entodinium, Eodinium, Isotricha, Dasytricha, Eremoplastron, Eudiplodinium, Metadinium, Charonina, Ostracodinium, and Epidinium protozoa. There was no effect of the time of sampling in both groups on the total number of ciliates in rumen fluid. A higher number of protozoan forms in binary division were recorded in the control group, at the 6th and 9th hours after feeding (P<0.019). There was a high positive correlation between the total count of protozoans in rumen fluid and glucose fermentation, ammonia, and urinary allantoin excretion index; and a negative correlation between the total count of protozoa and metilene blue reduction, and a medium correlation between the total count of protozoa and total volatile fatty acids concentration. The determination of the protozoa populations does not imply in the use of complex and hard-to-execute techniques, although it is time consuming and needs practice. This exam particularly helps in clinical expected diagnosis.Foram utilizados 10 novilhos mestiços com cânula ruminal, distribuídos em dois grupos: no grupo controle (C; n=4) receberam dieta balanceada para ganho diário de 900g; no grupo tratado com carência pronunciada de energia (CP; n=6), receberam dieta com 30% a menos do nível de mantença em energia. Após 140 dias sob esses regimes de alimentação, foram coletadas amostras do fluido ruminal e urina, para realização de provas bioquímicas e funcionais, antes e às 1, 3, 6 e 9 horas após o fornecimento do alimento. A carência energética resultou em diminuição significativa na quantidade dos protozoários Entodinium, Eodinium, Isotricha, Dasytricha, Eremoplastron, Eudiplodinium, Metadinium, Charonina, Ostracodinium e Epidinium. Não houve efeito da hora de coleta sobre o total de ciliados nos grupos C e CP. Maior número de formas em divisão binária foi registrado no grupo C, na sexta e nona horas pós-alimentação (P<0,019). Observaram-se altas correlações positivas entre a contagem total de protozoários e a fermentação de glicose, amônia e o índice de excreção urinária de alantoína e negativa entre a contagem total de protozoários e a redução do azul de metileno, e correlação média entre a contagem total de protozoários e os ácidos graxos voláteis totais. A determinação da população de protozoários do rúmen é um método simples de avaliação, além de que particularmente auxilia o diagnóstico clínico da função ruminal

Ward Identities, B-> \rho Form Factors and |V_ub|

The exclusive FCNC beauty semileptonic decay B-> \rho is studied using Ward identities in a general vector meson dominance framework, predicting vector meson couplings involved. The long distance contributions are discussed which results to obtain form factors and |V_ub|. A detailed comparison is given with other approaches.Comment: 30 pages+four postscript figures, an Appendix adde

Quantum Correlation in One-dimensional Extend Quantum Compass Model

We study the correlations in the one-dimensional extended quantum compass model in a transverse magnetic field. By exactly solving the Hamiltonian, we find that the quantum correlation of the ground state of one-dimensional quantum compass model is vanishing. We show that quantum discord can not only locate the quantum critical points, but also discern the orders of phase transitions. Furthermore, entanglement quantified by concurrence is also compared.Comment: 8 pages, 14 figures, to appear in Eur. Phys. J.

Green manure in coffee systems in the region of Zona da Mata, Minas Gerais: characteristics and kinetics of carbon and nitrogen mineralization.

The use of green manure may contribute to reduce soil erosion and increase the soil organic matter content and N availability in coffee plantations in the Zona da Mata, State of Minas Gerais, in Southeastern Brazil. The potential of four legumes (A. pintoi, C. mucunoides, S. aterrimum and S. guianensis)to produce above-ground biomass, accumulate nutrients and mineralize N was studied in two coffee plantations of subsistence farmers under different climate conditions. The biomass production of C. mucunoides was influenced by the shade of the coffee plantation.C. mucunoides tended to mineralize more N than the other legumes due to the low polyphenol content and polyphenol/N ratio. In the first year, the crop establishment of A. pintoi in the area took longer than of the other legumes, resulting in lower biomass production and N2 fixation. In the long term, cellulose was the main factor controlling N mineralization. The biochemical characteristics, nutrient accumulation and biomass production of the legumes were greatly influenced by the altitude and position of the area relative to the sun

Impactos ambientais do manejo agroecológico da caatinga no Rio Grande do Norte.

O objetivo deste trabalho foi avaliar os impactos ambientais do manejo agroecológico da caatinga, em unidades de produção familiar no Rio Grande do Norte, pelo método Ambitec de produção animal - dimensão ambiental, desenvolvido pela Embrapa Meio Ambiente. Foram avaliadas sete unidades de produção familiar, em quatro projetos de assentamentos de reforma agrária do Município de Apodi, RN. Os dados para o levantamento foram obtidos por meio de questionários aplicados aos representantes das unidades produtivas familiares, que atribuíram, a cada variável estudada, um valor que representou a alteração proporcionada pela implementação da tecnologia. Após a inserção dos coeficientes de alteração de cada variável dos indicadores por unidade de produção, o coeficiente de impacto foi automaticamente calculado por meio da planilha Ambitec. O manejo agroecológico da caatinga resultou num impacto ambiental positivo, e suas maiores contribuições foram relacionadas aos efeitos positivos dos seguintes indicadores: capacidade produtiva do solo, uso de insumos materiais, qualidade do produto e diminuição da emissão de poluentes à atmosfera. Dois indicadores geraram efeitos negativos: o uso de energia e o uso de recursos naturais. Pela superioridade dos benefícios gerados, o manejo agroecológico da caatinga é uma inovação tecnológica geradora de impactos ambientais positivos

Measurement of D*+/- meson production in jets from pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

This paper reports a measurement of D*+/- meson production in jets from proton-proton collisions at a center-of-mass energy of sqrt(s) = 7 TeV at the CERN Large Hadron Collider. The measurement is based on a data sample recorded with the ATLAS detector with an integrated luminosity of 0.30 pb^-1 for jets with transverse momentum between 25 and 70 GeV in the pseudorapidity range |eta| < 2.5. D*+/- mesons found in jets are fully reconstructed in the decay chain: D*+ -> D0pi+, D0 -> K-pi+, and its charge conjugate. The production rate is found to be N(D*+/-)/N(jet) = 0.025 +/- 0.001(stat.) +/- 0.004(syst.) for D*+/- mesons that carry a fraction z of the jet momentum in the range 0.3 < z < 1. Monte Carlo predictions fail to describe the data at small values of z, and this is most marked at low jet transverse momentum.Comment: 10 pages plus author list (22 pages total), 5 figures, 1 table, matches published version in Physical Review

The second International Symposium on Fungal Stress:ISFUS

The topic of 'fungal stress' is central to many important disciplines, including medical mycology, chronobiology, plant and insect pathology, industrial microbiology, material sciences, and astrobiology. The International Symposium on Fungal Stress (ISFUS) brought together researchers, who study fungal stress in a variety of fields. The second ISFUS was held in May 8-11 2017 in Goiania, Goias, Brazil and hosted by the Instituto de Patologia Tropical e Satide Pablica at the Universidade Federal de Goias. It was supported by grants from CAPES and FAPEG. Twenty-seven speakers from 15 countries presented their research related to fungal stress biology. The Symposium was divided into seven topics: 1. Fungal biology in extreme environments; 2. Stress mechanisms and responses in fungi: molecular biology, biochemistry, biophysics, and cellular biology; 3. Fungal photobiology in the context of stress; 4. Role of stress in fungal pathogenesis; 5. Fungal stress and bioremediation; 6. Fungal stress in agriculture and forestry; and 7. Fungal stress in industrial applications. This article provides an overview of the science presented and discussed at ISFUS-2017. (C) 2017 British Mycological Society. Published by Elsevier Ltd. All rights reserved.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundacao de Amparo a Pesquisa do Estado de Goias of BrazilAlders English Serv, BR-74810908 Goiania, Go, BrazilUniv Fed Goias, Lab Biol Mol, Inst Ciencias Biol, BR-74690900 Goiania, Go, BrazilUniv Fed Sao Carlos, Dept Genet & Evolucao, Ctr Ciencias Biol & Saude, Lab Bioquim & Genet Aplicada, BR-90040060 Sao Carlos, SP, BrazilChinese Acad Sci, Shanghai Inst Plant Physiol & Ecol, CAS Key Lab Insect Dev & Evolutionary Biol, Shanghai 200032, Peoples R ChinaUniv Fed Rio Grande do Sul, Dept Mol Biol & Biotechnol, Ctr Biotechnol, BR-13565905 Porto Alegre, RS, BrazilUniv Saskatchewan, Coll Pharm & Nutr, Saskatoon, SK S7N 5E5, CanadaUniv Helsinki, Dept Agr Sci, POB 27, FI-00014 Helsinki, FinlandUniv Fed Rio de Janeiro, Inst Chem, BR-21941901 Rio De Janeiro, RJ, BrazilUniv Fed Goias, Inst Patol Trop & Saude Publ, BR-74605050 Goiania, Go, BrazilUniv Dundee, Sch Life Sci, Geomicrobiol Grp, Dundee DD1 5EH, ScotlandUniv Gottingen, Inst Microbiol & Genet, Dept Mol Microbiol & Genet, D-37077 Gottingen, GermanyUniv Gottingen, Gottingen Ctr Mol Biosci, D-37077 Gottingen, GermanyUniv Sao Paulo, Fac Ciencias Farmaceut Ribeirao Preto, Dept Anal Clin Toxicol & Bromatol, BR-14040903 Ribeirao Preto, SP, BrazilUniv Sao Paulo, Fac Ciencias Farmaceut Ribeirao Preto, Dept Ciencias Farmaceut, BR-14040903 Ribeirao Preto, SP, BrazilUniv Fed Sao Carlos, Dept Genet & Evolucao, Ctr Ciencias Biol & Saude, BR-13565905 Sao Carlos, SP, BrazilQueens Univ Belfast, Inst Global Food Secur, Sch Biol Sci, MBC, Belfast BT9 7BL, Antrim, North IrelandUtah State Univ, Dept Biol, Logan, UT 84322 USAGeisel Sch Med Dartmouth, Dept Mol & Syst Biol, Hanover, NH 03755 USAUniv Tuscia, Dept Ecol & Biol Sci DEB, I-01100 Viterbo, ItalyUniv Seville, Fac Biol, Dept Genet, Seville 41012, SpainUniv Estadual Paulista, Inst Quim, Dept Bioquim & Tecnol Quim, BR-14800060 Araraquara, SP, BrazilAIT Austrian Inst Technol GmbH, Ctr Hlth & Bioresources, Konrad Lorenz Str 24, A-3430 Tulin, AustriaCONICET Univ Nacl La Plata UNLP, Inst Invest Bioquim La Plata INIBIOLP, CCT La Plata Consejo Nacl Invest Cient & Tecn, Calles 60 & 120, RA-1900 La Plata, ArgentinaUniv Autonoma Metropolitana Iztapalapa, Dept Biotechnol, Mexico City 09340, DF, MexicoSwedish Univ Agr Sci, Uppsala Bioctr, Dept Forest Mycol & Plant Pathol, Box 7026, S-75007 Uppsala, SwedenUniv Estadual Maringa, Dept Biochem, BR-87020900 Maringa, PR, BrazilUniv Estadual Paulista, Inst Quim, Dept Bioquim & Tecnol Quim, BR-14800060 Araraquara, SP, BrazilFAPESP: 2010/06374-1FAPESP: 2013/50518-6FAPESP: 2014/01229-4CNPq: PQ2 302312/2011-0CNPq: PQ1D 308436/2014-8CAPES: PAEP 88881.123209/2016-01Fundacao de Amparo a Pesquisa do Estado de Goias of Brazil: 20171026700011