Rhinus evelinae sp.n., uma nova espécie de Bulimulidae (Gastropoda, Sigmurethra), do sudeste brasileiro

Com base em caracteres conquiológicos e anatômicos, é descrita uma nova espécie do gênero Rhinus Albers, 1860, R. evelinae sp. n., procedente da Região Sudeste do Brasil. Conquiologicamente, a nova espécie é comparada com R. obeliscus (Haas, 1936) e com R. pubescens (Moricand, 1846). Seus dados anatômicos são relacionados aos únicos existentes na literatura (Breure, 1978, 1979), envolvendo R. ciliatus (Gould, 1846)

Effect of substrate bias voltage on amorphous Si–C–N films produced by PVD techniques

SixCyNz thin films were deposited by reactive magnetron sputtering in glass and steel substrates. The films were grown in a rotation mode over a carbon and a silicon targets in a mixed Ar/N2 atmosphere. The substrates were held at a substrate temperature of 573 K. The argon flow was kept constant (100 sccm) and the nitrogen flow was 20 sccm or 25 sccm, in each one of the two series of produced films, resulting in a working pressure around 0.5 Pa. The substrate bias varied between grounded and -100 V. The films were analysed with respect to microstructure, state of chemical bonding and optical properties by X-Ray Diffraction (XRD), Raman Spectroscopy (RS), optical reflectance and transmittance. Raman spectroscopy was used as a probe of microstructural modifications induced by deposition conditions. The main features observed in RS spectra are the well-known D- and G-bands characteristic of amorphous carbon materials. The position, widths and intensity ratio of these bands are found to be dependent of the films deposition conditions. The refractive index, absorption coefficient, optical band gap and also the thickness were calculated from transmittance spectra obtained between 200 nm and 2500 nm.The residual stress of the coatings depends on deposition conditions and was calculated by measuring the substrate curvature before and after film deposition. The curvature of the samples was measured by laser triangulation in two series of two orthogonal directions. All coatings were in a state of compressive residual stress. The average hardness and Young’s modulus of the produced coatings is about 16 GPa and 170 GPa, respectively. The nano-hardness of the grounded produced samples presented values about 30% lower

Embryo production using epididymal sperm submitted to different selection methods and their influence on the embryo sex.

Proceedings of the 31st Annual Meeting of the Brazilian Embryo Technology Society (SBTE); Cabo de Santo Agostinho, PE, Brazil, August 17th to 19th, 2017. Abstract

Voluntary Intake of Tanzania Grass (\u3ci\u3ePanicum maximum\u3c/i\u3e) under Rotational Grazing by Lactating Cows

The study was conducted at Nucleo de Pesquisas Zootecnicas Nordeste of the Instituto de Zootecnia, Ribeirão Preto, SP, in a rotational grazing area of Tanzania grass (Panicum maximum), to estimate the dry matter intake by lactanting cows. The estimation of dry matter intake was calculated from the feces production estimated using extrusa Chromium-mordent and the in vitro digestibility of diet. The three treatments were crossbreed cows fed 3 kg.day-1 of concentrate, crossbred cows without concentrate suplementation and pure Gir cows also without concentrate supplementation. The milk production was 11.98, 6.53 and 5.46 kg per cow per day, the grass intake was 8.26 ± 5.66, 11.01 ± 5.37 and 9.55 ± 2.31 kg of dry matter per day or 2.15%, 2.37% and 2.34% of live weight for the three experimental groups respectively. The milk production was higher (P\u3c 0.01) for cows fed with concentrate. No difference was found for dry matter intake