Construção de instrumentos técnicos de astronomia para a divulgação científica: telescópio fotométrico de grande abertura e baixo custo

Although the popularization of astronomy in the last decade and the International Year of Astronomy, celebrated in 2009, there's a great lack in respect of quality instruments for astronomical disclosure. Thinking in this research about it, we intend to recuperate and elucidate a technique long forgotten: the metal mirror amateur telescope, once was done in the first reflecting telescopes. However, with the resources available today and given the high purity of the materials, our results were better than that obtained by the pioneers. We developed and built a large aperture telescope (250 mm diameter) and very bright (focal ratio = 4.0), versatile and portable. In our study was described step by step the process to fabricate the telescope. Through its first images captured of the Moon, we can illustrate its versatility both for use in outreach events and for use in amateur astronomy, because it is a primary focus capture system and can run registration of various astronomical events

Aspectos técnicos, econômicos e de sustentabilidade da produção de hidrogênio renovável

Pós-graduação em Engenharia Mecânica - FEG

Significados do trabalho para servidores técnicos e administrativos de uma instituição pública de ensino superior no interior paulista

Pós-graduação em Saúde Coletiva - FMB

A matemática contábil: das lides comerciais para os cursos secundários técnicos e sua transformação em setor acadêmico no Brasil (1808-1970)

Pós-graduação em Educação Matemática - IGCE

Esporte no contexto escolar: estudo do perfil dos professores de educação física qua atuam como técnicos nas olimpíadas estudantis no município de São Paulo

Pós-graduação em Ciências da Motricidade - IBRC

Estilo de liderança de técnicos de futebol

Psychological factors are gaining more space in sports, and increasingly common related professional psychology are inserted in the sporting context. Seeking a better understanding of the manifestations of leadership in football between technicians of different categories this study aimed to verify whether there is a preferred style of leadership among the football coaches and if there are differences between the leadership style ideal and real seconded by same. The methodology used the Search Specification (CERVO and BERVIAN, 2004) relying on the implementation of the Revised Leadership Scale for Sport (ELRE), ideal and real versions Profile, With the participation of twenty football coaches in the field (n = 20), working in teams of males in the City of São Bernardo do Campo - SP, and to process the data we calculated the Cronbach alpha to verify the reliability of the scale, and the average of the results relying on the software application SPSS version 17.0 for Windows. Of the total participants 30% have a degree in Physical Education and are inserted in the football an average of 8 years in different roles and the prevalence of autocratic decision-making model, with an alpha of 0.87 results in the ideal profile and the actual profile of alpha 0.86 , So the scale is stable and reliable. We conclude that the model of autocratic decision not differ very significantly compared to the model of democratic decision. Regarding the interaction with the group of technicians the situational model is highlighted in research showing that technicians take into account situational factors.

Determinação do teor dos ingredientes ativos imidacloprida e clorpirifós em produtos técnicos formulados por CLUE-DAD

The use of pesticides to manage pest problems in agriculture has become a common practice around the world. Pesticides consist in chemical substances or biological agents that act preventing, destroying, repelling or mitigating the damage caused by pests in agriculture. In order to a successful treatment, the correct dosage of pesticide has to be applied for each kind of culture. In this context, this project aims to quantify the levels of the active ingredients Imidacloprid and Chlorpyrifos present in formulated technical products and compare with the reported in the ir commercial leaflets. The analyzes were performed by Ultra Performance Liquid Chromatography coupled to a photodiode array detector (CLUE-DAD). The identification of Imidacloprid and Chlorpyrifos in the samples was realized by comparison of the time of retention and UV spectre of those substances with the commercials patterns, resulting in a excellent method specificity of the method. In the scope of determination of active ingredients in formulated products, the method developed showed good sensitivity in the applied conditions, with suitables limits of detection (4,2.10-² mg L-¹ for Imidacloprid and 1,1.10-¹ mg L-¹ to Chlorpyrifos) and quantitation (1,4.10-¹ mg L-¹ and Imidacloprid 3,6.10-¹ mg L-¹ to Chlorpyrifos) for the concentrations found in matrices analyzed. Furthermore, good results were obtained to the method accuracy with coeficiente of variance values in the range of 0,6 to 0,7% for repeatability (intra-day) and 0,4 to 0,58% for intermediate precision (inter- day). The accuracy of the method was determined by recovery tests, the values were comprised in the range of 98 102%. According to the recommendations of the Associação Brasileira de Normas Técnicas, these values show good accuracy of the method. The concentrations obtained in the quantification of the active ingredients in formulated products showed values within permited by ABNT, 60.1% (w/v) ± 0.6%...

Influência de aspectos técnicos e anatômicos nos índices de fertilidade baseado no desempenho da inseminação artificial

The aim of this work was to examine both the influence of anatomical and technical aspects on fertility rate of sheep based on the performance of transcervical artificial insemination (TCAI). Transcervical artificial insemination was performed with traction of the cervix in 122 ewes using frozen semen from 11 rams, both Santa Ines breed. The data collected were: type of external cervical opening (CO) (P - papilla; FL - flap; DB - duckbill, S - spiral; RO - rosette), duration of cervical manipulation (2-3, 4-5 and 6-7 minutes), degree of difficulty in cervical transposition (low, moderate, high) and presumed semen deposition site (SC - superficial cervical; DC - deep cervical; IU - intrauterine). The influence of these variables on pregnancy rate was evaluated. Cervical opening type and duration of cervical manipulation had no influence (p>0.05) on fertility. The degree of difficulty in cervical manipulation influenced (p<0.05) pregnancy rate, since insemination classified as low grade had 52% of pregnancy, while those classified as high recorded only 20%. The presumed site of semen deposition influenced significantly (p<0.05) fertility. Pregnancy rates of deposition at each site were: UI – 45.8%, DC – 25.7%; SC – 15.4%. As expected, deeper depositions resulted in higher fertility. In conclusion, the performance of TCAI did not depend on the anatomical classification of external cervical opening of ewe and the duration of cervical manipulation within the range tested (2-7 minutes). The TCAI may have higher fertility rates if difficulties in the application were reduced and the semen deposition was deeper.