Detecção da procedência de plantas psicoativas pelos isótopos estáveis do nitrogênio (15n) e oxigênio (18o)

This research examines the merits of hallucinogenic plants considered and/or psychoactive substances, such as Cannabis sativa and Ipomoea violacea, using the isotope rates of stable isotope of oxygen (18O) and nitrogen (15N), continuing projects already developed by the research group at the Center for Stable Isotope (CIE), which evaluated the isotopes carbon-13. This paper helps in creating a database that we intent to use in evaluation of each plant merit. Through the IRMS (Isotope-Ratio Mass Spectrometry) technique, it has shown that some of the 24 samples of marijuana (Cannabis sativa L.) evaluated were similar to those grown in the regions of Fairbanks and Tanacross Alaska, USA. In turn, the 50 samples of Ipomoea violacea, coming from Botucatu (SP) and Três Lagoas (MS), got their differences detected, in order to clearly identify the discrepancies between their growing regions. Thus, it was possible not only to track the geographical differences between marijuana samples collected from different regions, but also evaluate the isotopic variation of leaf, flower and seed of Ipomoea violacea. With this database, it was possible to determine the origin region of the drug and/or detect where the cultivation was carried out, aiding in the search of the traffic control agencies, such as the Federal Police in Brazil

Fitase em dietas para frangos de corte - melhor desempenho e sustentabilidade para a produção animal

O presente trabalho de conclusão de curso é composto por uma revisão bibliográfica sobre a fitase e um relatório sobre o estágio supervisionado realizado na BRF S. A. em Rio Verde/GO. A busca por medidas de sustentabilidade, e a preocupação das indústrias e granjas avícolas com o meio ambiente ligadas ao fator econômico torna a utilização da fitase cada vez mais difundida entre a avicultura moderna. O uso da suplementação enzimática com fitase nas dietas dos frangos de corte diminui a necessidade de utilizar fontes inorgânicas de fósforo, reduzindo os custos com a produção das rações. A fitase também beneficia as aves com uma maior biodisponibilidade de macro e micronutrientes, por hidrolisar o ácido fítico. A utilização da fitase pode ser um adjuvante nas dietas para frangos de corte em diferentes fases de criação, melhorando índices zootécnicos e contribuindo para a redução da poluição ambiental por reduzir elementos como o fósforo e o nitrogênio das excretas das aves

Doses de molibdênio e nitrogênio em milho safrinha e efeito residual na cultura da soja em plantio direto

Pós-graduação em Agronomia - FEIS

Tragédia familiar: uma análise de Os Corumbas, de Amando Fontes. -

Pós-graduação em Letras - FCLAS

As fontes do método analítico de leitura de João Köpke (1896-1917)

After two decades advertising and defending the synthetic method, João Köpke became active disseminator of analytical method for teaching reading. In five te xts published between 1896 and 1917, produced in different circumstance s for different publics readers, Köpke seeks the support of American and European authors, for their principles as well as for the education experience, to his analytical method. as by theirs principles as by theirs educational experiences. Among those authors: J. Jacotot, A. Bain, A. Meiklejohn, J. Froebel, C. Parker, G. Stanley Hall and J. Chubb. In this article, attention is given to repeated American references with special emphasis on the psychology of Stanley Hall and the method of teaching reading of Meiklejohn, highlighted and placed on convergence by Köpke in his final writings.

Televisão, família e escola: fontes informativas sobre deficiências

Children learn very early which groups are stigmatized and how they should be treated. They learn formally and informally, by listening and watching people and the world around them. The construction of children's representations about disabilities starts with access to information on the subject, which may come from their caregivers, media, school etc. This work is part of a monograph that examined the effects of an educational program involving strategies for non-disabled children on conceptions and attitudes concerning mental disability. This paper refers to the initial characterization of these children and their access to information on disability, and to identifying previous access, source and memory of such information. The study included 40 children from two classrooms of the first grade of a public school in Marília, SP. The children were interviewed using an individual semi structured questionnaire. Many children said they did not have access to information on the subject. Among those who had previous access to the information, the television was the most frequent source of information, and characteristics of the deficiencies, relations with diseases and encouragement of solidarity were among the contents reminded by them. The data emphasize the need for the media to expand concerns with the content presented to the public, for parents and teachers to become more involved with the issue, seeking to be informed and revise their own conceptions, in order to transform the subject into something that is part of daily school and family environment.

Efeito de fontes de luz na microdureza de resinas compostas

This study assessed the surface microhardness of compound resins cured by different light sources. Methods Three micro hybrid (Vit-l-escence, Amelogen Plus, Opallis) and one nanoparticle (Filtek Z350, 3M ESPETM Dental Products, St. Paul, USA) compound resins were selected. The resins were polymerized by a halogen light unit (Ultralux, Dabi Atlante, Ribeirão Preto, Brasil) with two tips, one semi-guided made of glass and another of painted acrylic and a LED-based source (UltraLume 2, Ultradent®, South Jordan, USA). Specimens constructed from a circular aluminum matrix were photopolymerized for 40 second after they received the compound resin and stored dry for 24 hours. After this period, a Vickers surface microhardness assay was performed, measuring the top (hardness 1) and base (hardness 2) surfaces four times each. Variance analyses were complemented by Newman-Keuls method, with significance set at 5%. Results The Opallis (FGM, Santa Catarina, Brasil) resin subjected to UltraLume 2 (Ultradent®, South Jordan, USA) obtained the lowest mean hardness values for the top surface. The Vit-l-escence (Ultradent®, South Jordan, USA) compound cured by Led UltraLume 2 (Ultradent®, South Jordan, USA) and by Ultralux PCP (Dabi Atlante, Ribeirão Preto, Brasil) halogen light obtained the highest mean hardness, followed by the Filtek Z350 (3M ESPETM Dental Products, St. Paul, USA) resin subjected to UltraLume 2 (Ultradent® South Jordan, USA). The Opallis (FGM, Santa Catarina, Brasil) resin cured by LED UltraLume 2 (Ultradent®, South Jordan, USA) also obtained the lowest mean hardness for the base surface and the Vit-L-Escence (Ultradent®, South Jordan, USA) resin obtained the highest value, followed by Amelogen Plus, when cured by Ultralux (Dabi Atlante, Ribeirão Preto, Brasil) using the semi-guided tip. Conclusion The polymerization and, consequently, the microhardness achieved by the LED unit was equivalent to those achieved by conventional halogen units for three of the four composites tested.

Contribuição da deposição atomosférica seca de compostos nitrogenados na disponibilização de nutrientes e na indução do fenômeno de eutrofização em reservatório localizado no interior do estado de São Paulo

Pós-graduação em Química - IQ

Parcelamento e doses de nitrogênio em cobertura na produção, acúmulo de nutrientes e qualidade de cenoura

Pós-graduação em Agronomia (Horticultura) - FCA

Coberturas vegetais e doses de nitrogênio, associadas à inoculação com Azospirillum brasilense, no cultivo do milho na região de Cerrado

Pós-graduação em Agronomia - FEIS

Gestão democrática, educação e cidadania: um olhar crítico a partir de fontes bibliográficas

Pós-graduação em Educação Escolar - FCLAR

Relação da tolerância ao déficit hídrico com o teor e acúmulo de nitrogênio, fósforo e potássio em cultivares de cana-de-açúcar

Pós-graduação em Agronomia (Ciência do Solo) - FCAV

Desempenho do capim-açú e do capim-canarana em função da adubação com nitrogênio e potássio

Pós-graduação em Agronomia (Ciência do Solo) - FCAV

Guia de fontes sobre académicos esquecidos e renascidos 1724-1759

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