Publicações - ciências exatas e da terra
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TRÖGER, ARMIN;
VON REUSS, STEPHAN;
RAGUSO, ROBERT A.;
FRANCKE, WITTKO;
SVENSSON, GLENN P.;
GALBRECHT, HANS-MARTIN;
TWELE, ROBERT;
PATT, JOSEPH M.;
BARTRAM, STEFAN;
Paulo Henrique Gorgatti Zarbin;
SEGRAVES, KARI A.;
ALTHOFF, DAVID M.
Palavra-chave:
ecologia química
Áreas do conhecimento:
Ciências Exatas e da Terra; Química; Química Orgânica; Evolução, Sistemática e Ecologia Química;
Ciências Exatas e da Terra; Química; Química Orgânica; Química dos Produtos Naturais
resumo ...
The obligate pollination mutualism between Yucca and yucca moths is a classical example of coevolution. Oviposition and active pollination by female yucca moths occur at night when Yucca flowers are open and strongly scented. Thus, floral volatiles have been suggested as key sensory signals attracting yucca moths to their host plants, but no bioactive compounds have yet been identified. In this study, we showed that both sexes of the pollinator moth Tegeticula yuccasella are attracted to the floral scent of the host Yucca filamentosa. Chemical analysis of the floral headspace from six Yucca species in sections Chaenocarpa and Sarcocarpa revealed a set of novel tetranorsesquiterpenoids putatively derived from (E)-4,8-dimethyl-1,3,7-nonatriene. Their structure elucidation was accomplished by NMR analysis of the crude floral scent sample of Yucca treculeana along with GC/MS analysis and confirmed by total synthesis. Since all these volatiles are included in the floral scent of Y. filamentosa, which has been an important model species for understanding the pollination mutualism, we name these compounds filamentolide, filamentol, filamental, and filamentone. Several of these compounds elicited antennal responses in pollinating (Tegeticula) and non-pollinating (Prodoxus) moth species upon stimulation in electrophysiological recordings. In addition, synthetic (Z)-filamentolide attracted significant numbers of both sexes of two associated Prodoxus species in a field trapping experiment. Highly specialized insect-plant interactions, such as obligate pollination mutualisms, are predicted to be maintained through “private channels” dictated by specific compounds. The identification of novel bioactive tetranorsesquiterpenoids is a first step in testing such a hypothesis in the Yucca-yucca moth interaction.
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OLIVEIRA-TINTINO, CÍCERA DATIANE DE MORAIS;
KRAUTLER, MARIA ISABEL LACOWICZ;
PEREIRA, PEDRO SILVINO;
COSTA, JOSÉ GALBERTO MARTINS DA;
RODRIGUES, FABIOLA FERNANDES GALVÃO;
TEIXEIRA, ALEXANDRE MAGNO RODRIGUES;
RIBEIRO-FILHO, JAIME;
TINTINO, SAULO RELISON;
DE MENEZES, IRWIN ROSE ALENCAR;
COUTINHO, HENRIQUE DOUGLAS MELO;
SILVA, TERESINHA GONÇALVES DA;
MUNIZ, DÉBORA FEITOSA;
BARBOSA, CRISTINA RODRIGUES DOS SANTOS;
PEREIRA, RAIMUNDO LUIZ SILVA;
BEGNINI, IEDA MARIA;
REBELO, RICARDO ANDRADE;
Luiz Everson da Silva;
MIRESKI, SANDRO LUCIO;
NASATO, MICHELE CAROLINE
Palavra-chave:
ácido de Méldrum;
Antimicrobial activity;
naftiridinas
resumo ...
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Larissa da Rocha Santos;
Renato Leandro;
Guilherme Fedalto;
Andre Spisila;
Anelize Manuela Bahniuk;
Oswaldo Siga Júnior;
Leonardo Fadel Cury
Palavra-chave:
Tectonostratigraphy;
Precambrian continental margins;
Phantom Glacial;
Southern Ribeira Belt;
Curitiba terrane
Áreas do conhecimento:
Ciências Exatas e da Terra; Geologia; Geotectônica;
Ciências Exatas e da Terra; Geociências; Geologia; Estratigrafia;
Ciências Exatas e da Terra; Geociências; Paleogeografia
resumo ...
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SANTOS, LARISSA DA ROCHA;
SPISILA, ANDRÉ LUIS;
GUIMARÃES, DANIEL PATIAS;
SZAMEITAT, LUIZEMARA;
Alessandra de Barros e Silva Bongiolo;
CURY, LEONARDO FADEL
Palavra-chave:
Neoproterozoic;;
Curitiba microplate;;
Southern Ribeira Belt;
Brasiliano ? Pan African Orogeny;
South Atlantic opening;
Cenozoic Rift of Southern Brazil
Áreas do conhecimento:
Ciências Exatas e da Terra; Ciência da Computação; Metodologia e Técnicas da Computação; Engenharia de Software;
Ciências Exatas e da Terra; Geociências; Cartografia Geológica;
Ciências Exatas e da Terra; Geociências; Geofísica; Sensoriamento Remoto
resumo ...
The Capiru Group is a Neoproterozoic metasedimentary unit that crops out in the Curitiba terrane, Southern Ribeira Belt, Brazil. A detailed geological mapping of this unit was performed during 2016...
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Larissa da Rocha Santos;
Andre Spisila;
Daneil Patias Guimarães;
Luizemara Szameitat;
Alessandra de Barros e Silva Bongiolo;
Leonardo Fadel Cury
resumo ...
The Capiru Group is a Neoproterozoic metasedimentary unit that crops out in the Curitiba terrane, Southern Ribeira Belt, Brazil. A detailed geological mapping of this unit was performed during 2016...
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BOARETTO, B.R.R.;
César Manchein;
PRADO, T.L.;
LOPES, S. R.
Palavra-chave:
Hodgkin-Huxley model;
Neural networks
Áreas do conhecimento:
Ciências Exatas e da Terra; Física; DINâMICA NãO LINEAR;
Ciências Exatas e da Terra; Física; Áreas Clássicas de Fenomenologia e suas Aplicações; Transferência de Calor; Processos Térmicos e Termodinâmicos
resumo ...
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Fernanda Coff Dias;
Felix Sharipov
Palavra-chave:
ab inito potential;
Direct Simulation Monte Carlo;
Quantum scattering;
shock wave
Áreas do conhecimento:
Engenharias; Engenharia Mecânica; Fenômenos de Transporte; Dinâmica dos Gases;
Ciências Exatas e da Terra; Física; Física dos Fluídos, Física de Plasmas e Descargas Elétricas; Cinética e Teoria de Transporte de Fluídos; Propriedades Físicas de Gases
resumo ...
The structure of planar shock waves propagating through argon, xenon, and krypton is calculated using the direct simulation Monte Carlo method for Mach numbers 2, 5, and 10. The upstream temperature considered in the present paper varies from 30 to 8000 K, depending on the gas species and Mach number. Both quantum and classical approaches to the intermolecular collisions based on ab initio potential are used. The distributions of density and temperature inside the shock wave are reported. The density slope is calculated as a function of the upstream temperature and Mach number with the numerical error less than $$0.5\%$$ . The dependence of the density slopes on the upstream temperature is studied. It is shown that the slope behaviors of the heavy gases are qualitatively similar to each other, but they are completely different from those for helium.
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ADAMS, AUGUSTO MATHIAS;
Armando Heilmann;
ADAMS, ANSELMO DANIEL;
Dartora, Cesar Augusto;
ODAKE JUNIOR, EDSON MASAO;
TERTULIANO FILHO, HORÁCIO;
SANTOS, LUIS AUGUSTO CORDEIRO DOS
Palavra-chave:
lightning;
detection efficiency;
Location accuracy;
short range detector;
lightning risk alert system
resumo ...
HIGHLIGHTS Storm Dynamics (path/velocity/heading) coherent with the simulation values. Alerts:...
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VIANA, R. L.;
BARTOLONI, B.;
MATHIAS, A. C.;
GOMES, J. V.;
Morrison, P. J.;
CALDAS, I;
Jose Danilo Szezech Jr;
Batista, A. M.;
ABUD, C. V.;
Adriane Beatriz Schelin;
MUGNAINE, M.;
SANTOS, M. S.;
LEAL, B. B.
Palavra-chave:
mapas não-twist
Áreas do conhecimento:
Ciências Exatas e da Terra; Física dos Fluídos, Física de Plasmas e Descargas Elétricas; Física de Plasmas e Descargas Elétricas;
Ciências Exatas e da Terra; Física; Física Geral; Dinamica Nao-Linear e Caos
resumo ...
Chaotic transport is a subject of paramount importance in a variety of problems in plasma physics, specially those related to anomalous transport and turbulence. On the other hand, a great deal of information on chaotic transport can be obtained from simple dynamical systems like two-dimensional area-preserving (symplectic) maps, where powerful mathematical results like KAM theory are available. In this work, we review recent works on transport barriers in area-preserving maps, focusing on systems which do not obey the so-called twist property. For such systems, usual KAM theory no longer holds everywhere and novel dynamical features show up as non-resistive reconnection, shearless curves, and shearless bifurcations. After presenting some general features using a standard nontwist mapping, we consider magnetic field line maps for magnetically confined plasmas in tokamaks.
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Felix Sharipov;
Victor Juan Benites
Palavra-chave:
ab inito potential;
thernal conductivity;
viscosity;
diffusion;
isotope
Áreas do conhecimento:
Engenharias; Engenharia Mecânica; Fenômenos de Transporte; Dinâmica dos Gases;
Ciências Exatas e da Terra; Física; Física dos Fluídos, Física de Plasmas e Descargas Elétricas; Cinética e Teoria de Transporte de Fluídos; Propriedades Físicas de Gases
resumo ...
The transport coefficients such as viscosity, thermal conductivity, diffusion and thermal diffusion of neon, argon, krypton, and xenon are computed for a wide range of temperatures taking into consideration their real isotopic compositions. A new concept of isotopic thermal diffusion factor is introduced and
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