Evolving Market Performance in Brazilian Futures Contracts Using Relative Efficiency

Marketing,

Performance and hematology of pacu fed diets supplemented with vitamins C and/or E

O pacu (Piaractus mesomotamicus Holmberg 1887) é uma espécie altamente valiosa para a aqüicultura brasileira. Entretanto, trata-se de uma das espécies mais susceptíveis a doenças. Por isso, a suplementação alimentar para o pacu pode representar importante estratégia de prevenção da incidência das enfermidades em pisciculturas. Pacus (10,5 ± 1,2 g) foram alimentados com dietas contendo três níveis de vitamina C e/ou E (0, 250 e 500 mg vitamina kg-1 de dieta). Os peixes foram alimentados com dieta não purificada sem suplementação durante os primeiros 60 dias para reduzir as reservas teciduais das vitaminas. Após este período, os peixes foram alimentados com as dietas testadas durante 60 dias. As avaliações de crescimento e hematologia foram realizadas no 30º e 60º dias. Pacus alimentados com dieta sem suplementação com as vitaminas C e E durante 120 dias não apresentaram sinais claros típicos de deficiência. Os peixes que receberam a dieta deficiente em vitamina C e E apresentaram maior consumo de ração, porém sem melhora no desempenho produtivo. A vitamina E mostrou-se essencial para a proteção dos eritrócitos, sendo que quanto maior o nível desta vitamina na dieta, menor o número de eritroblastos. A suplementação com 500 mg de vitamina C e 250 mg de vitamina E durante 60 dias aumentou a produção de monócitos, trombócitos e células granulocíticas especiais em pacu.Pacu (Piaractus mesopotamicus Holmberg, 1887) is a valued Brazilian fish species for aquaculture. This is highly susceptible to disease, and feed supplementations for pacu can be a very important strategy to prevent disease incidence in fish farms. The aim of this study was to evaluate a strategic supplementation for pacu. Juvenile pacu (10.5 ± 1.2 g) were fed diets containing three levels of vitamins C and/or E (0, 250, and 500 mg vitamin kg-1 diet). Fish were fed diets without supplementation for two months prior to the experiment. After that period, experimental feeding was initiated for two months. Growth and hematological evaluations were made on the thirtieth and sixtieth days of feeding. Pacu fed diet without supplementation of vitamins C and E during 120 days did not show clear typical signs of deficiency. Fish fed diet vitamins C and E free increased feed intake, but no improvement on growth performance was detected. Vitamin E proved essential for erythrocyte protection, so that the higher the level of this vitamin in diet, the smaller the number of erythroblasts. Supplementation with 500 mg of vitamin C and 250 mg of vitamin E for 60 days increased the production of monocytes, thrombocytes and special granulocytic cells in pacu

Dano existencial: consequências da Síndrome da Alienação Parental

O presente trabalho trata do dano existencial em consequência da Síndrome da Alienação Parental, analisando quais as marcas que a síndrome poderá gerar na vida da criança e adolescente, podendo causar sofrimento psicológico até a vida adulta. Trazido a baila, a responsabilidade civil, seus conceitos e seus elementos, voltados ao dano existencial, bem como, sua importância na proteção jurídica do menor. As decisões jurídicas sobre o assunto, em sua maioria do Tribunal de Justiça do Estado do Rio Grande do Sul ainda são recentes, nesse contexto o presente trabalho, demonstrando a importância da análise do assunto, para a futura prevenção de dolorosa e danosa situação ao convívio familiar, tanto para os genitores como para os filhos menores

Eventos de turismo desportivo: uma atividade sustentável? O caso dos 21 Kms do Guarajá

Os participantes dos eventos de turismo desportivo escolhem o seu destino devido à oferta de atividades desportivas, o que torna esses eventos uma ferramenta viável para a promoção e fidelização do destino. Quando se consideram os eventos de turismo desportivo de pequena escala, em comparação com os grandes ou mega-eventos, tem-se verificado que os impactos económicos no destino são mais positivos já que não são necessitarios grandes investimentos em infra-estruras visto que normalmente estes eventos utilizam as infra-estruturas existentes. Por outro lado, este pequenos eventos de turismo desportivo apresentam também a vantagem de se realizarem com a interação dos atores locais. No entanto a investigação é ainda escassa no que diz respeito aos impactes, em especial em relação aos impactes ambientais. Neste sentido, este estudo tem como objetivo principal identificar os impactos económicos, socioculturais e ambientais da evento 21 K Guarujá (Brasil). Para o efeito foram usados, como instrumentos de recolha de dados, dois questionários – um aplicado aos participantes e outro aos residentes, e duas entrevistas semi-estruturadas – uma aplicada ao organizador e outra ao governo local. Através da análise dos dados, verificou-se que os impactos do evento foram positivos, principamente no que se refere aos impactes socioculturais. Este estudo permitiu apresentar algumas propostas de melhoria na gestão do evento, para permitir uma maior sustentabilidade do mesmo, e para a gestão do destino por parte dos diversos stakeholders

Infrared thermal image for assessing animal health and welfare

Infrared thermal imaging is a non-destructive testing technology that can be used to determine the superficial temperature of objects. This technology has an increasing use in detecting diseases and distress in animal husbandry within the poultry, pig and dairy production. The process can identify changes in peripheral blood flow from the resulting changes in heat loss and; therefore, have been a useful tool for evaluating the presence of disease, edema, and stress in animals. This paper reviews the current literature related to the use of infrared technology and discusses their results and implications in animal welfare issues, poultry, pig and bovine industry

Variability in the indument of Phaseolus vulgaris var. aborigeous (Fabaceae)

The indument of Phaseolus vulgaris L. var. aborigineus (Burkart) Baudet, a native bean from Argentina, potential source for improvement of cultivated varieties, was compared between different genetic lines. Seeds collected from wild, weedy forms and presumptive hybrid individuals in two distant latitudes were sown in two sites of Buenos Aires University Campus (field and greenhouse). Two type of trichomes were found, which differenciate in length and shape. The pubescence density was significantly different between wild specimens from different latitudes and between culture sites for plants of a same procedence. This character could be involved in physical defences of these plants.Fil: Ojeda, Fabiana Soledad. Consejo Nacional de Invest.cientif.y Tecnicas. Oficina de Coordinacion Administrativa Ciudad Universitaria. Plan. Toxicas y Medic., Metab. de Comp. Sinteticos y Nat.- Hongos que Intervienenen la Deg.; Argentina;Fil: Amela Garcia, Maria Teresa. Consejo Nacional de Invest.cientif.y Tecnicas. Oficina de Coordinacion Administrativa Ciudad Universitaria. Plan. Toxicas y Medic., Metab. de Comp. Sinteticos y Nat.- Hongos que Intervienenen la Deg.; Argentina;Fil: Hoc, Patricia Susana. Consejo Nacional de Invest.cientif.y Tecnicas. Oficina de Coordinacion Administrativa Ciudad Universitaria. Plan. Toxicas y Medic., Metab. de Comp. Sinteticos y Nat.- Hongos que Intervienenen la Deg.; Argentina

Development and differentiation of the extrafloral nectaries from flower buds in Vigna luteola (Leguminosae, Phaseolinae)

To study the ontogeny of the extrafloral nectaries present in the inflorescences of Vigna luteola (Jacq.) Benth (Leguminosae, Phaseolinae), the location, morphology, anatomy of the earliest stages, histology of the definitive structures and ultrastructure of the secretory stage were analyzed. The extrafloral nectaries at different developmental stages were examined with light microscopy and scanning electron microscopy. The secretory stage was also examined with transmission electron microscopy. The racemose inflorescence of V. luteola has six nodes. At each node, a short globose secondary axis bears two flowers and one to three extrafloral nectaries. Each extrafloral nectary originates from the abscission of a flower bud and is formed by two differentiated zones: a ring of epidermal cells surrounding a group of longitudinally enlarged papillose central cells, both with underlying secretory parenchyma. The primary secretory tissue consists of the central cells, while the ring contributes to secretion to a lesser degree. Secretion is granulocrine, by means of exocytotic vesicles and plasmalemma invaginations. Four developmental stages succeed; the third one being the secretory. The extrafloral nectaries activity period starts when the flowers of the same secondary axis open and ceases before fruit development.Fil: Ojeda, Fabiana Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Micología y Botánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Micología y Botánica; ArgentinaFil: Galati, Beatriz Gloria. Universidad de Buenos Aires. Facultad de Agronomía; ArgentinaFil: Amela Garcia, Maria Teresa. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Micología y Botánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Micología y Botánica; Argentin

Mycobacterium bovis deleted in mce2 and phoP loci protects C57BL/6 mice against tuberculosis

Here we confirm the efficacy of MbΔmce2-phoP to protect mice against bTB challenge and we demonstrated that this new attenuated strain is safer than our previous bTB vaccine MbΔmce2. Altogether these results support the further assessment of this candidate in cattle model of bTB.Experiments with mice were performed in compliance with the regulations of the Institutional Animal Care and Use Committee (CICUAE) of INTA (61/2014)..Inst. de BiotecnologíaFil: Garcia, Elizabeth Andrea. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; ArgentinaFil: Bianco, Marí­a Veronica. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fisiología y Recursos Genéticos Vegetales; ArgentinaFil: Blanco, Federico Carlos. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Biotecnología; ArgentinaFil: Bigi, Fabiana. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Biotecnología; Argentin

Fair and Scalable Orchestration of Network and Compute Resources for Virtual Edge Services

The combination of service virtualization and edge computing allows for low latency services, while keeping data storage and processing local. However, given the limited resources available at the edge, a conflict in resource usage arises when both virtualized user applications and network functions need to be supported. Further, the concurrent resource request by user applications and network functions is often entangled, since the data generated by the former has to be transferred by the latter, and vice versa. In this paper, we first show through experimental tests the correlation between a video-based application and a vRAN. Then, owing to the complex involved dynamics, we develop a scalable reinforcement learning framework for resource orchestration at the edge, which leverages a Pareto analysis for provable fair and efficient decisions. We validate our framework, named VERA, through a real-time proof-of-concept implementation, which we also use to obtain datasets reporting real-world operational conditions and performance. Using such experimental datasets, we demonstrate that VERA meets the KPI targets for over 96% of the observation period and performs similarly when executed in our real-time implementation, with KPI differences below 12.4%. Further, its scaling cost is 54% lower than a centralized framework based on deep-Q networks

VERA: Resource Orchestration for Virtualized Services at the Edge

The combination of service virtualization and edge computing allows mobile users to enjoy low latency services, while keeping data storage and processing local. However, the network edge has limited resource availability, and when both virtualized user applications and network functions need to be supported concurrently, a natural conflict in resource usage arises. In this paper, we focus on computing and radio resources and develop a framework for resource orchestration at the edge that leverages a model-free reinforcement learning approach and a Pareto analysis, which is proved to make fair and efficient decisions. Through our testbed, we demonstrate the effectiveness of our solution in resource-limited scenarios where standard multi-agent solutions violate the system’s capacity constraints systematically, e.g., over 70% violation rate with 2 vCPUs in our testbed. Index Terms—Virtual RAN, virtualized services, resource or- chestration, machine learning, experimental testbe