Encontrados 19 documentos, a visualizar página 1 de 2
Routine screening of harmful microorganisms in beach sands: implications to pub...
Sabino, Raquel; Rodrigues, R.; Costa, I.; Carneiro, C.; Cunha, M.; Duarte, A.; Faria, N.; Ferreira, F. C.; Gargaté, M. J.; Júlio, C.; Martins, M. L.Beaches worldwide provide recreational opportunities to hundreds of millions of people and serve as important components of coastal economies. Beach water is often monitored for microbiological quality to detect the presence of indicators of human sewage contamination so as to prevent public health outbreaks associated with water contact. However, growing evidence suggests that beach sand can harbor microbes ha...
Effect of probiotic supplemented diet on marine shrimp survival after challenge...
Vieira,F.N.; Buglione,C.C.; Mouriño,J.P.L.; Jatobá,A.; Martins,M.L.; Schleder,D.D.; Andreatta,E.R.; Barraco,M.A.; Vinatea,L.A.The effect of a Lactobacillus plantarum-supplemented diet on shrimp growth, digestive tract bacterial microbiota, survival, and some hemato-immunological parameters after an experimental challenge with Vibrio harveyi was studied. No difference (P>0.05) was observed in shrimp survival (80±6%) and final weight (6.63±0.56g) after 60 days feeding trial. Total bacteria count and Vibrio spp. count in the digestive...
Coleta e conservação de germoplasma de espécies silvestres de Manihot no estado...
LEDO, C. A. da S.; SILVEIRA, T. C. da; CARVALHO, P. C. L. de; MARTINS, M. L. L.; TAVARES FILHO, L. F. de Q.Espécies silvestre de Manihot são importantes reservatórios de alelos de interesse a serem transferidos para a espécies cultivadas, visando ao desenvolvimento de variedades melhoradas com maior resistência a estresses causados por fatores bióticos e abióticos e que expressem maior produtividade (NASSAR, 2006). ; 2010
Protozoan parasites of Xiphophorus spp. (Poeciliidae) and their relation with w...
Garcia,F.; Fujimoto,R.Y.; Martins,M.L.; Moraes,F.R.This work investigated the relationship between water characteristics and infestation of protozoan parasites, Icthyophthirius multifiliis and Trichodina sp., in swordtails (Xiphophorus helleri) and platy (Xiphophorus maculates) collected in an ornamental fish farm in São Paulo, Brazil. Fish were monthly collected from ponds and tanks for one year. The prevalence rates in fish from tanks and ponds were, respecti...
Challenge of pacu (Piaractus mesopotamicus) fed diets supplemented with vitamin...
Garcia,F.; Moraes,F.R.; Martins,M.L.Pacu Piaractus mesopotamicus fed diets supplemented with three vitamins C and E levels (zero, 250, and 500mg vitamin/kg diet) were challenged with Aeromonas hydrophila under different temperatures. Fish were kept in 300L plastic tanks and fed during the first 60 days with diets without vitamins C and E, in an attempt to reduce vitamin sources. After this period, fish were maintained at an initial density of 14 ...
Strategies for optimize off-lattice aggregate simulations
Alves,S. G.; Ferreira Jr.,S. C.; Martins,M. L.We review some computer algorithms for the simulation of off-lattice clusters grown from a seed, with emphasis on the diffusion-limited aggregation, ballistic aggregation and Eden models. Only those methods which can be immediately extended to distinct off-lattice aggregation processes are discussed. The computer efficiencies of the distinct algorithms are compared.
Experimental infection in Notodiaptomus sp. (Crustacea: Calanoida) with larvae ...
Martins,M.L.; Ghiraldelli,L.; Garcia,F.; Onaka,E.M.; Fujimoto,R.Y.This trial registered the experimental infection viability with nematode larvae Camallanus sp. in Notodiaptomus sp., a crustacean, which can be an intermediate host. Adult females of nematode were dissected from the intestines of Xiphophorus maculatus (Osteichthyes: Poeciliidae), at a fish farm in the State of São Paulo. Females were slightly compressed for larvae release, collected with Pasteur pipette and sep...
Camallanus maculatus n. sp. (Nematoda: Camallanidae) in an ornamental fish Xiph...
Martins,M.L.; Garcia,F.; Piazza,R.S.; Ghiraldelli,L.The present study describes Camallanus maculatus n. sp. (Nematoda: Camallanidae) from Xiphophorus maculatus (Osteichthyes: Poecilidae) collected in an ornamental fish farm in São Paulo State, Brazil. Thirty-three out of 40 examined fish were parasitized (82% prevalence) with mean intensity of 2.8 (1-20). Male specimens were 3,500µm total length and females 7,100µm total length, provided with orange-brown buccal...
An imroved design for ZVT DC-DC PWM converters with snubber assisted auxiliary ...
Russi,J.; Martins,M. L.; Gründling,H. A.; Pinheiro,H.; Pinheiro,J. R.; Hey,H. L.This paper proposes an improved design to calculate the snubber auxiliary elements of ZVT DC-DC PWM converters with snubber assisted auxiliary switch. The proposed improved design guidelines are based on the reduction of the conduction losses through the auxiliary circuit. It is accomplished by the unique location of the turn-off snubber capacitor, which is shared by both active switches. By means of this impro...
A classification methodology for zero-voltage transition PWM converters
Martins,M. L.; Russi,J. L.; Hey,H. L.This paper presents a classification methodology of the ZVT soft-transition technique, which is based on different ways of implementation of the auxiliary circuit voltage source. The merits and limitations of each class are presented and their key features and characteristics are discussed and experimentally analyzed on the 1kW/100kHz laboratory prototypes. By means of the proposed classification criteria, any ...
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