Simulating Gyrokinetic Microinstabilities in Stellarator Geometry with GS2

The nonlinear gyrokinetic code GS2 has been extended to treat non-axisymmetric stellarator geometry. Electromagnetic perturbations and multiple trapped particle regions are allowed. Here, linear, collisionless, electrostatic simulations of the quasi-axisymmetric, three-field period National Compact Stellarator Experiment (NCSX) design QAS3-C82 have been successfully benchmarked against the eigenvalue code FULL. Quantitatively, the linear stability calculations of GS2 and FULL agree to within ~10%.Comment: Submitted to Physics of Plasmas. 9 pages, 14 figure

Algumas normas de orientação para o tratamento da tristeza parasitária bovina.

Formas de apresentação e sintomatologia clínica da doença; Circunstâncias que levam a ocorrência de casos isolados ou surtos de tristeza parasitária bovina; Considerações quanto ao tratamento; Tratamento complementar; Sugestões para o controle da tristeza parasittária bovina.bitstream/item/110627/1/ALGUMAS-NORMAS-DE.pd

O controle dos piolhos dos bovinos (Damalinia bovis e Linognathus vituli).

Os piolhos são insetos sem asas que passam todo o ciclo evolutivo sobre os bovinos, podendo sobreviver poucos dias fora do hospedeiro.bitstream/item/55720/1/ct41-2001.pd

Orientação básica para o controle da mosca-dos-chifres "Haematobia irritans".

De origem européia, a Haematobia irritans existe nos Estados Unidos há mais de cem anos, onde causa prejuízos econômicos e sanitários. A mosca já foi detectada também na Austrália, em países africanos, no Canadá e na América do Sul, na Colômbia, Venezuela, Equador e Chile.bitstream/item/55712/1/it09-2000.pd

Controle da verminose em terneiros desmamados com 60 e 90 dias de idade.

Atualmente, vem sendo preconizado o desmame precoce de terneiros de gado de corte com 60 a 90 dias de idade, cujo objetivo principal é de elevar os índices de repetição de cria das vacas.bitstream/item/63444/1/it12-2001.pd

On the phase identity and its thermal evolution of lead free (Bi1/2Na1/2)TiO3-6 mol% BaTiO3

Temperature-dependent dielectric permittivity of 0.94(Bi1/2Na1/2) TiO3-0.06BaTiO(3) (BNT-6BT) lead-free piezoceramics was studied to disentangle the existing unclear issues over the crystallographic aspects and phase stability of the system. Application of existing phenomenological relaxor models enabled the relaxor contribution to the entire dielectric permittivity spectra to be deconvoluted. The deconvoluted data in comparison with the temperature-dependent dielectric permittivity of a classical perovskite relaxor, La-modified lead zirconate titanate, clearly suggest that BNT-6BT belongs to the same relaxor category, which was also confirmed by a comparative study on the temperature-dependent polarization hysteresis loops of both materials. Based on these results, we propose that the low-temperature dielectric anomaly does not involve any phase transition such as ferroelectric-toantiferroelectric. Supported by transmission electron microscopy and X-ray diffraction experiments at ambient temperature, we propose that the commonly observed two dielectric anomalies are attributed to thermal evolution of ferroelectric polar nanoregions of R3c and P4bm symmetry, which coexist nearly throughout the entire temperature range and reversibly transform into each other with temperature.open1128

O controle da mosca do berne (Dermatobia hominis).

Em algumas regiões e microregiões do Rio Grande do Sul têm se verificado um aumento nas infestações pelo berne.bitstream/item/55721/1/ct42-2001.pd

Suscetibilidade da mosca-dos-chifres, Haematobia irritans irritans (Diptera: Muscidae), a inseticidas no Brasil.

Since horn fly populations became established throughout Brazil, complaints regarding control failure have increased around the country. A broad survey to evaluate the susceptibility of horn flies to both organophosphate (OP) and pyrethroid insecticides was conducted from October 2000 to April 2003. Bioassays using filter papers impregnated with cypermethrin, permethrin or diazinon were conducted on 154 horn fly populations in 14 states and 78 municipalities

Eficácia comparativa de quatro endectocidas sobre infestações naturais por Boophilus microplus em bovinos.

EFICACIA COMPARATIVA DE CUATRO ENDECTOCIDAS SOBRE INFESTACIONES NATURALES POR Boophilus microplus EN BOVINOS F. de P. J. ALVES-BRANCO et, al. EI objetivo de este estudio fue comparar Ia eficacia de cuatro endocticidas en el tratamiento y control de infestaciones con B. microplus adquiridas naturalmente en ganado bovino, en una área endémica de Brasil, donde los animales fueran expuestos continuamente a infestaciones naturales durante el periodo experimental. COMPARATIVE EFFECTIVENESS OF FOUR ENDECTOCIDES ABOUT NATURAL INFESTATIONS OF Boophilus microplus IN BOVINES F. de P. 1. ALVES-BRANCO et, al. The goal of this study was to compare the effetiveness offour endectocides in the infestations treatment and control groups for B. microplus naturally acquired in bovine cattle in na endemic area in Brazil, where the animais were exposed continually to the natural infestations durin

Observation of a New Charmed Strange Meson

Using the CLEO-II detector, we have obtained evidence for a new meson decaying to $D^0 K^+$. Its mass is $2573.2^{+1.7}_{-1.6}\pm 0.8\pm 0.5$ {}~MeV/$c^2$ and its width is $16^{+5}_{-4}\pm 3$~MeV/$c^2$. Although we do not establish its spin and parity, the new meson is consistent with predictions for an $L=1$, $S=1$, $J_P=2^+$ charmed strange state.Comment: 9 pages uuencoded compressed postscript (process with uudecode then gunzip). hardcopies with figures can be obtained by sending mail to: [email protected]