Composite electrodes based on several ceramic oxides were tested for their chemical compatibility and electrochemical performance in systems based on composite Gd-doped ceria + alkaline carbonate electrolytes. Reactivity tests performed at 700 degrees C (accelerated testing conditions), involving the ceramic electrode materials and one mixture of Na and Li carbonates, identified two promising perovskyte-type ceramics, LaCoO3 and La0.8Sr0.2Co0.2Fe0.8O3, as the most stable. Co-pressed and co-sintered cell assemblies (electrode/electrolyte/electrode) involving composite electrodes (perovskytes mixed with alkaline carbonates)were studied in detail by scanning electron microscopy and tested by impedance spectroscopy in air in the temperature range 300-600 degrees C. These tests showed the potential of these composite electrodes for intermediate temperature applications, clearly surpassing in performance standard Au electrodes, here used as reference. (c) 2012 Elsevier Ltd. All rights reserved.

The aim of this work was to evaluate the growth of sesame BRS 196 CNPA G4 in different irrigation depths (305, 436, 567 and 698 mm), applied on the basis of crop evapotranspiration? ETc (the depth of 567 mm was equal to 100% ETc). It was conducted at Embrapa Cotton, in Barbalha County, Ceará State, Brazil, 2012. The experiment was in randomized blocks, with treatments distributed in plots with three replications. The ETc was calculated by multiplying the reference evapotranspiration (ETo), determined by the Penman-Monteith method, by the crop coefficients (Kc), recommended for each phenological stage of the crop and by FAO. For the other irrigation treatments, the ETc was multiplied by 0.4, 0.7 and 1.3 (40, 70 and 130% of ETc). Primarily, height, stem diameter, leaf area and leaf area index were measured at 27, 48, 69 and 90 Days After Emergence (DAE), and then the absolute and relative growth rates in height, stem diameter and leaf area were estimated. It was concluded that height, stem diameter, leaf area and leaf area index of sesame BRS 196 CNPA G4 increased with irrigation; the highest growth occurred until 70 or 75 DAE, and the greatest growth was obtained, in general, in 698 mm of irrigation depth. Key words: Sesamum indicum L., evapotranspiration, growth rates, water stress.

This study aimed to identify the irrigation depth (305, 436, 567 and 698 mm), applied on the basis of crop evapotranspiration- ETc (the depth of 567 mm was equal to 100% of ETc) for best yield (Y) and water use efficiency (WUE) for irrigation and soil water stress tolerance (Ky) of sesame BRS 196 CNPA G4. The experiment was conducted at Embrapa Cotton, Barbalha County, CE State, Brazil, in 2012. The experimental design was randomized block, with three replications. ETc was calculated by multiplying the reference evapotranspiration (ETo) determined by Penman-Monteith method with the crop coefficients (Kc) recommended by FAO. For other irrigation treatments, ETc was multiplied by 0.4, 0.7 and 1.3 (40, 70 and 130% of ETc). During harvest, number of capsules (NC) per plant, yield (Y), oil content (O) of seeds, WUE and Ky were counted, calculated and determined. It was concluded that 698 mm irrigation depth provided the highest yield and oil content of sesame seeds; 305 mm irrigation depth allowed the best WUE of sesame irrigation; and, sesame BRS 196 CNPA G4 plants were tolerant to soil water stress.

PEREIRA, J.R; SILVA, F.S. Extensão e ensino na unidade universitária federal de educação infantil núcleo de desenvolvimento da criança. Revista extensão em ação. Fortaleza, v. 1, n. 8, 2015. Disponível em: <http://www.revistaprex.ufc.br/index.php/EXTA/article/view/187/127>. Acesso em: 17 set. 2015.

Estudou-se atraves de um experimento em blocos ao acaso, os efeitos de quatro niveis de nitrogenio, em diferentes condicoes de umidade, sobre os estagios de crescimento, embonecamento, formacao de graos e prdutividade do milho (Zea mays L.) e as relacoes entre a produtividade e os tres primeiros estagios. Os fatores da resposta de producaobaseados na equacao de Doorenbos e Kassam variaram acentuadamente, nao so com os diferentes estatios de crescimento, mas tambem com diferentes niveis de nitrogenio e os diferentes niveis de agua. Assim, esta equacao nao pareceu ser valida para explicar a resposta de produtividade a niveis de agua. Sugeriu-se um equacao linear modificada. Nesta equacao, a intercessao K1 e inclinacao K2 sao os fatores da resposta de producao. Estes fatores para a cultura do milho foram desenvolvidos para todos os quatro estagios de crescimento e nveis de nitrogenio. Pode-se obter uma eficiencia media do uso de agua, em termos de produtividade, de, aproximadamente, 57,5 kg/ha-cm de agua, sendo, contudo, pequeno o incremento, em face dos niveis crescentes de nitrogenio aplicado ate 120 kg/ha. Os coeficientes de cutura (Kc) calculados estao muito abaixo da estimativa da FAO, para todos os niveis de nitrogenio. Por essa razao, deve haver consideravel economica de agua se estes coeficientes forem usados em lugar da estimativa da FAO. A informacao mostradapode imediatamente ser utilizada para turno de irrigacao e para projetos de irrigacao suplementar planejado para as condicoes doe Nordeste do Brasil.

This work presents an Inverted-L antenna design using the fractal geometry for dual band WLAN (2.4/5.2GHz) USB dongle application. The proposed antenna has the advantages of compact size, wide operation bandwidth and easy fabrication. The experimental results show that it has a S11<-10 dB bandwidth from 2.25 to 2.60 GHz and 5.06 to 5.62 GHz. The radiation performances of the proposed antenna in free space and when connected to a laptop computer were also studied in this work. The proposed antenna was designed and optimized by using Ansoft HFSS V13.

RESUMO O maracujá-amarelo (Passiflora edulis f. flavicarpa Deg) é considerado um alimento funcional, visto que, além de funções nutricionais, desempenha ações em vias metabólicas específicas. A farinha da casca do maracujá-amarelo (Passiflora edulis f. flavicarpa Deg) é rica em pectina. Esta fibra reduz a absorção de glicídios e lipídios, influenciando no metabolismo destes nutrientes. Portadores de patologias associadas às alterações no metabolismo glicêmico e lipidêmico têm utilizado este recurso de forma indiscriminada. Porém, substâncias designadas glicosídeos cianogênicos, presentes na casca do fruto são tóxicas ao organismo e prejudiciais à saúde. Ademais, o uso exacerbado de agrotóxicos na produção do maracujá é preocupante e a ingestão destes compostos também pode acarretar complicações à saúde. Portanto, o objetivo do presente trabalho foi sintetizar o conhecimento disponível referente aos efeitos terapêuticos e colaterais da suplementação com a farinha da casca do maracujá-amarelo (Passiflora edulis f. flavicarpa Deg). Foi realizada uma revisão bibliográfica nas bases de dados indexadas SCIELO, LILACS e PUBMED, sem limitação quanto ao período de publicação. Os estudos inclusos no trabalho, de forma unânime, apresentam eficácia da suplementação com a farinha da casca do maracujá-amarelo. A trituração da casca do fruto, realizada no processo de obtenção da farinha, é incapaz de promover redução de glicosídeos cianogênicos e agrotóxicos, permitindo que os indivíduos submetidos à suplementação estejam susceptíveis aos efeitos tóxicos destes compostos. Dessa forma, o desenvolvimento de estudos que avaliem a toxicidade da suplementação por períodos crônicos é de suma importância. Referente ao uso de agrotóxicos, a produção da farinha com frutos orgânicos pode ser uma alternativa para atenuar a toxicidade, sendo necessária a elucidação desta hipótese através de estudos.

ABSTRACT A study to evaluate the resistance of B. microplus to the active principles cypermethrin, deltamethrin and chlorpyriphos was performed together with the survey of the tick control practices used in 12 farms located in Vale do Paraíba Region, São Paulo, Brazil. Results obtained by the larval packet test (LPT) technique, adopted by FAO, showed established resistance to pyrethroids (cypermethrin 16.7% sensitive, 8.3% resistant level I and 75% resistant level II; deltamethrin 25% /sensitive, 33.3% resistant level II and 41.7% resistant level III) and emerging resistance to organophosphate compounds (chlorpiriphos 58.3% sensitive, 33.3% resistant level I and 8.4% resistant level II). The inquiry applied to the farmers showed that the combination of organophosphates and pyrethroids compounds products is the most commonly tick-killing compounds used in the region, followed by amitraz and macrocyclic lactones.

This work presents an Inverted-L antenna design using the fractal geometry for dual band WLAN (2.4/5.2GHz) USB dongle application. The proposed antenna has the advantages of compact size, wide operation bandwidth and easy fabrication. The experimental results show that it has a S11&lt;-10 dB bandwidth from 2.25 to 2.60 GHz and 5.06 to 5.62 GHz. The radiation performances of the proposed antenna in free space and when connected to a laptop computer were also studied in this work. The proposed antenna was designed and optimized by using Ansoft HFSS V13.

This paper presents an integrated approach to estimate the exposure of the Portuguese population to phthalates as a contaminant originating from paperboard packaging. The approach combined data of migrant concentration in the foods resulting from a stochastic simulation with consumption data of food packaged in paperboard. The results from the exposure model were validated with experimental values actually found in the food. A short surveillance exercise was conducted with samples collection from market shelves to identify and quantify the phthalates present in both the packages and the food. The distribution of values for the di-butyl phthalate concentration in the packages was used as the input of the initial concentration in the Weibull model to estimate the concentration of this phthalate in the foods. This distribution of occurrence data was then combined with the packaging usage data in a probabilistic simulation with a Monte Carlo sampling method. Exposure values ranged between zero and 8.95 mg day 1 kgbw, a value close to the tolerable daily intake established by the European Food Safety Authority (EFSA) – 10 mg day 1 kgbw. However, the 97.5th percentile and the average were 1.82 and 0.44 day 1 kgbw, respectively, indicating that further refinement of the estimates is not necessary. Other phthalates were also detected in the packaging samples: di-isobutyl phthalate and di-ethylhexyl phthalate. The latter was present in all packaging samples collected and was detected in a few food samples at values requiring further investigation.