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

O pagamento por desempenho no contexto das reformas educacionais paulistas

This article presents the results of a research that has as its analysis focus the payment by performance, represented in the public educational system of the São Paulo State by the bonus-merit. The bonus, such as other measures implemented in the last decade, is part of neoliberal reforms that were predominant in the public educational system of the State. The article intends to debate the implications of this mechanism for the teaching from a bibliographic review about the topic as well as from the interpretation of data originated from a qualitative empirical investigation based on semi-structured interviews with second cycle teachers of high and middle schools of three regional departments of education. The results revealed an influence of performative and managerial elements in the organizational work of schools and teachers. Moreover, they showed that the payment by performance has not contributed for the improvement of the work conditions and for the career of the teachers, has a very limited impact to change the quality of education and thus represent a teacher accountability mechanism.

Contribuições dos estudos de perfil dos graduandos: o caso dos cursos de licenciatura e bacharelado em Química da UNESP/Araraquara

This paper focuses on the profile of students of bachelor and teacher training degree in Chemistry and UNESP/Araraquara. Statistical and comparatives analyzes were performed with a large amount of quantitative data on those who registered and passed the entrance examinations of these courses. This information was interpreted based on the concepts of economic and cultural capital developed by Pierre Bourdieu. The first analysis concerned the approval in entrance exams and brings important conclusions regarding the aspects that favor entering university: confirmation of "preparation courses effect"; major weight of cultural capital in relation to economic capital; and observation of the phenomenon of self-selection in relation to the bachelor's under graduation course. The second analysis points to important differences in the profile of a group of students that could be considered homogeneous due to the choice of chemistry course. In addition to bringing new information on the profile of students of chemistry, our analysis has the merit of translating and quantitatively reveals ideas conveyed in common sense about passing the entrance exam.

Desenvolvimento, validação, avaliação da incerteza de medição e análise de custos de método baseado em espectroscopia no infravermelho e análise multivariada para previsão de parâmetros de qualidade de amostras de E85

Pós-graduação em Química - IQ

Low-Level Fluoride Exposure Increases Insulin Sensitivity in Experimental Diabetes

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

Nitrogen metabolism in coffee plants in response to nitrogen supply by fertigation

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Quality and dose optimization in hand computed radiography

The objective of the present study was to optimize a radiographic technique for hand examinations using a computed radiography (CR) system and demonstrate the potential for dose reductions compared with clinically established technique. An exposure index was generated from the optimized technique to guide operators when imaging hands. Homogeneous and anthropomorphic phantoms that simulated a patient's hand were imaged using a CR system at various tube voltages and current settings (40-55 kVp, 1.25-2.8 mAs), including those used in clinical routines (50 kVp, 2.0 mAs) to obtain an optimized chart. The homogeneous phantom was used to assess objective parameters that are associated with image quality, including the signal difference-to-noise ratio (SdNR), which is used to define a figure of merit (FOM) in the optimization process. The anthropomorphic phantom was used to subjectively evaluate image quality using Visual Grading Analysis (VGA) that was performed by three experienced radiologists. The technique that had the best VGA score and highest FOM was considered the gold standard (GS) in the present study. Image quality, dose and the exposure index that are currently used in the clinical routine for hand examinations in our institution were compared with the GS technique. The effective dose reduction was 67.0%. Good image quality was obtained for both techniques, although the exposure indices were 1.60 and 2.39 for the GS and clinical routine, respectively.

Rapid determination of 12 antibiotics and caffeine in sewage and bioreactor effluent by online column-switching liquid chromatography/tandem mass spectrometry

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

Desafios da dogmática penal frente aos crimes patrimoniais na realidade socioeconômica brasileira

Pós-graduação em Direito - FCHS

Comparação entre modelos de análise genômica utilizando dados simulados e dados reais em ovinos

Pós-graduação em Genética e Melhoramento Animal - FCAV