996 resultados para Schiff bases


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The present paper introduces a new model of fuzzy neuron, one which increases the computational power of the artificial neuron, turning it also into a symbolic processing device. This model proposes the synapsis to be symbolically and numerically defined, by means of the assignment of tokens to the presynaptic and postsynaptic neurons. The matching or concatenation compatibility between these tokens is used to decided about the possible connections among neurons of a given net. The strength of the compatible synapsis is made dependent on the amount of the available presynaptic and post synaptic tokens. The symbolic and numeric processing capacity of the new fuzzy neuron is used here to build a neural net (JARGON) to disclose the existing knowledge in natural language data bases such as medical files, set of interviews, and reports about engineering operations.

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A espécie Prochilodus lineatus, considerada um migrador por excelência, possui intensa ocorrência durante a migração reprodutiva. São peixes de elevado valor econômico e a sua adaptação em cativeiro os tornam altamente interessantes para desenvolvimento de programas de piscicultura. O monitoramento regular das variações genéticas nos estoques é importante em programas de conservação, evitando o declínio da variabilidade genética, essencial para a conservação das espécies. No entanto, os poucos dados moleculares populacionais para Prochilodus lineatus justificam a presente proposta. Nesse sentido, tivemos como objetivo caracterizar a variabilidade genética e estabelecer as relações filogeográficas entre 6 populações de P. lineatus das bacias dos rios Paraguai (2 do rio Paraguai e 3 do rio Cuiabá, MT) e Paraná (1 do rio Mogi-Guaçu, SP), num total de 34 indivíduos. Outros 16 indivíduos dos rios: da Prata, Uruguai, Paraná, Bermejo, Paraguai, Amazonas e Madeira, cujas sequências foram obtidas do National Center for Biotechnology Information (Genbank), foram analisados, totalizando assim, 50 indivíduos. Como grupo externo foi utilizado Salminus brasiliensis. O estudo foi realizado através das análises das sequências do gene mitocondrial ATPase 8/6. O interesse do uso de um gene mitocondrial está na vasta literatura que esse possui em análises filogenéticas e na confiança que existe nos dados gerados de tais análises. O gene citado foi completamente sequenciado (842pb), as análises filogenéticas foram conduzidas pelos métodos “Neighbor Joining (NJ)”, “Minimum Evolution (ME)” e “Máxima Parcimônia (MP)”, com 1000 réplicas de bootstrap no programa MEGA 5.0. Para análises filogeográficas as sequências foram analisadas no programa TCS e no programa Arlequin. Os resultados auxiliarão em uma melhor compreensão da história evolutiva, migração... (Resumo completo, clicar acesso eletrônico abaixo)

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Acupuncture is a technique belonging to traditional Chinese medicine that has existed for over 3000 years. It consists of stimuli by pressure, needling, heat and electrical stimulation of the skin at specific points to restore the health of patients. This technique has been increasingly incorporated into the West and therefore the research explaining its various mechanisms become very important to translate these ancient skills. This article is a literature review summarizing the basic concepts, historical and local, anti-inflammatory and neurological effects acupuncture in the body

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Volunteering is seen as a form of citizen participation enabling to involve, mobilize, engage and articulate people and institutions around issues of collective interest. Both for the volunteer and for the community involved, voluntary action can promote learning, new experiences and interaction with people previously unknown, as well as create opportunities for professional and personal growth. (CENTRO DE VOLUNTARIADO DE SÃO PAULO, 2012). This work starts from a survey conducted in 2006 by Carvalho, who detected the interest of members of the campus community Guaratinguetá UNESP in performing volunteer work. Its objective is to continue the work mentioned and think of ways to support volunteering in the Guaratinguetá Engineering College, mainly through the creation of connections between stakeholders (individuals and institutions). For this, focused Volunteer Centers and their functional models. Such a center could be the ideal facilitator of relationships between volunteer candidates that integrate FEG / UNESP community and institutions interested in the collaboration of these people. The work highlighted the benefits that voluntary action can bring to those involved in it, and the role that a Volunteer Center at UNESP Guaratinguetá may play, in the promotion and expansion of social activities already undertaken. The study also indicates the need for a validation of the proposals presented here and later detailing way of acting of the Centre in its institutional placement and maintenance costs

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At a time when people turn increasingly to technological innovations and virtual networks, a closer interaction with the environment can provide sensitizing experiences. One tool that facilitates this approach is the interpretative trail: its use in a Unit of Conservation (UC) allows more contact between the visitor and the nature elements. This research aimed to propose the establishment of an interpretative trail at the State Florest “Edmundo Navarro de Andrade” (FEENA) in Rio Claro (SP) with theoretical bases from Waldorf Pedagogy. The proposed trail is destined for students with 07-14 years-old, a period that the awareness is more accurate in a person, according to Waldorf tenets. On the path of the trail, we propose some educational activities at the points of interpretation: storytelling about environment; “photograph” the place with a drawing; create a song with sounds produced by the body and by nature elements; blindfold guide and a circle of people to share experiences. The activities aim to provide in the student a close and harmonious contact with oneself, with other people and with the natural world, and also serve as a support for programs of public use and environmental education at UC. The environmental awareness process in the context of FEENA - which has a significant landscape valuation - develops through the sensibilities of exterior and interior world. And also develops with the creation if images, thoughts, feelings and interdependencies relationships. Therefore, the ecologic education allows changes and formation of values and sensitive attitudes to students about the environment

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In the last years Brazil has achieved a leading position in worldwide cattle breeding. This country is consolidating the practice of an intensive and technical level cattle breeding, due to greater emphasis on reproductive efficiency and genetic improvement. The attention given to reproductive efficiency became to enhance the genetic improvement process, by exploiting the full reproductive potential of the animals. The biotechniques applied to reproduction arised to expand the reproductive potential for greater economic return. Are the most important reproductive biotechniques the FTAI and in vivo and in vitro embryo production for embryo transfer. Different hormonal treatments are consolidating to interfere with normal physiology in order to achieve the desired goals. The FTAI works to increase the reproductive rates of cattle through pre-booked artificial insemination in all the females in reproduction, without the need for estrous detection. The in vivo and in vitro embryo production aims to distribute the genetics of males and females genetically improved by transferring their embryos to genetically inferior females. Superovulation treatments designed to prevent the mechanism of dominance, which results in many follicles ovulating simultaneously for in vivo embryo production. To the in vitro embryo production, the technique of ovarian puncture guided by transvaginal ultrasound allows to aspirate a number of quality oocytes. The application of biotech is based on knowledge of the female and ovarian reproductive physiology and knowledge of their acting in different breeds and environments.

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The aim of this article is to present the theoretic-methodological bases for the construction of a bilingual terminological dictionary of economics which serves either Portuguese and Spanish speakers. Th e contrasted languages are the Brazilian Portuguese variety and the peninsular and Argentinean varieties. The purpose of this text is based on the principles of the Communicative Theory of Terminology - CTT (Cabré, 1999).

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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This paper discuss the bases for monitoring studies on A Science Touch, a science popularization product developed at Unesp. There are science initiationlevel researches for critical evaluation of the program, sorted in technical appropriation and reception studies and discourse analysis.

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Early studies involving childhood autism attributed to family involvement in impairment of psycho-emotional development of the child. The purpose of this study was to review the literature related to autism and family in two national databases (Theses Database of Capes and Scientific Electronic Library Online) without defining a specific period as well as identify the main thematic focused. Were located 29 studies in Theses Database of Capes, the first record in 1990 and 12 in Scientific Electronic Library Online, the first publication in 2001. The results were grouped into seven categories. The categories “Quality of Life” and “Family Relations” concentrate most of publications on Theses Database. Already in Scientific Electronic Library Online, mostly refers to the “Family Relations” and “literature review”. It was found that none of theses or dissertations was published in scientific paper format, hampering the dissemination of research in the area.

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Em razão ao uso intensivo e por ser altamente não-degradável, o metal Cd (II) tem causado uma grande preocupação na sociedade moderna devido a sua capacidade de acumular-se em matrizes ambientais manifestando toxicidade. O projeto teve como objetivo o desenvolvimento da síntese da Sílica Mesoporosa para o ancoramento do ligante Ácido Rubeânico sobre a superfície do material. A caracterização do mesmo, por espectroscopia na região do infravermelho (FTIR), após a etapa de funcionalização indicou a presença de grupamento amina, com banda em 3350 cm-1, bandas na região de 2940 e 2850 cm-1 atribuídas a grupos metileno e a atenuação da banda C-Cl (700 cm-1), devido ao ancoramento da molécula do ligante. O material foi aplicado em experimentos de batelada e o efeito de tempo de contato e do pH sobre a adsorção de íons Cd (II) foi avaliado. O material apresentou cinética rápida, a qual foi alcançada em 1 minuto e a maior adsorção foi atingida em pH 6 (próximo ao ponto de carga zero) para ambos os metais. As condições ótimas obtidas foram aplicadas para a determinação da capacidade máxima de adsorção. Os dados obtidos da isoterma de adsorção foram aplicados à Equação Linearizada de Langmuir, fornecendo 0,03 mmol g-1, com o coeficiente de determinação dos dados sendo R² de 0,9961. Na segunda etapa, o material modificado foi aplicado em sistema de fluxo contínuo, ajustando as melhores condições como massa de amostra, tipos de eluente bem como o volume de eluato. Os resultados das concentrações do metal foram obtidos por determinação direta por espectrometria de absorção atômica