Qualidade da pulverização em volume reduzido para o controle do bicho-mineiro Leucoptera coffeella (Guérin-Mèneville & Perrottet, 1842) (Lepidoptera: Lyonetiidae)

Pós-graduação em Agronomia (Entomologia Agrícola) - FCAV

Novel estimation of the humification degree of soil organic matter by laser-induced breakdown spectroscopy

Soil organic matter (SOM) constitutes an important reservoir of terrestrial carbon and can be considered an alternative for atmospheric carbon storage, contributing to global warming mitigation. Soil management can favor atmospheric carbon incorporation into SUM or its release from SOM to atmosphere. Thus, the evaluation of the humification degree (HD), which is an indication of the recalcitrance of SOM, can provide an estimation of the capacity of carbon sequestration by soils under various managements. The HD of SOM can be estimated by using various analytical techniques including fluorescence spectroscopy. In the present work, the potential of laser-induced breakdown spectroscopy (LIBS) to estimate the HD of SUM was evaluated for the first time. Intensities of emission lines of Al, Mg and Ca from LIBS spectra showing correlation with fluorescence emissions determined by laser-induced fluorescence spectroscopy (LIFS) reference technique were used to obtain a multivaried calibration model based on the k-nearest neighbor (k-NN) method. The values predicted by the proposed model (A-LIBS) showed strong correlation with LIFS results with a Pearson's coefficient of 0.87. The HD of SUM obtained after normalizing A-LIBS by total carbon in the sample showed a strong correlation to that determined by LIFS (0.94), thus suggesting the great potential of LIBS for this novel application. (C) 2014 Elsevier B.V. All rights reserved.

Fractografia quantitativa: correlação entre dimensão fractal e tenacidade à fratura em compósitos fibra de carbono/epóxi

The fracture surfaces express the sequence of events of energy release due to crack propagation by linking the relief of the fracture to the loading stresses. This study aims to evaluate the heterogeneity of the critical zone for the advancement of the crack along its entire length in a thermoset composite carbon fiber and epoxy matrix, fractured in DCB testing (Double Cantilever Beam) and ENF (End-Notched Flexure). Investigations were made from image stacks obtained by optical reflection of extended depth from focus reconstruction. The program NIH Image J was used to obtain elevation map and fully focused images of the fracture surface, whose topographies were quantitatively analyzed. The monofractal behavior for DCB samples was assessed as being heterogeneous along the crack front and along the crack for all the conditionings. For the samples fractured in ENF test, there was a strong positive correlation to the natural condition, considering the fibers at 0° for the monofractal dimension and structural dimension (Df and Ds). For fibers at 90° to crack propagation, there was a moderate positive correlation for the textural dimension of natural condition. However, for the samples under ultraviolet condition and those subjected to thermal cycles, there was no correlation between the fractal dimension and fracture toughness in mode II

Geologia de uma área na porção centro leste da folha Cássia (1:50.000), MG

This study aimed the geological characterization at scale 1:50.000 of an area belonging to the southern sector of the Brasilia Belt, located in the western portion of the Passos Nappe, near the town of Cássia, MG. In this region, outcrops rock types belonging to Araxá Group, composed of metasediments associated with metavolcanics which form a tectonometamorphic terrain of great importance for understanding the geological evolution of southeast and midwest regions of Brazil. With the development of work was possible to group the rocks in 10 lithostratigraphic units and had been identified 3 different zones of metamorphism generated during the peak metamorphism. The structural pattern of the area shows that the main foliation has average dip 30 ° NW and mineral lineation parallel to the stretching direction with 290 °. Still, we can conf irm that this inverse gradient metamorphic rocks of the Passos Nappe, described by several authors. Also, were seen lithotypes of economic interest, some already in exploitation, such as clay and sand, and other mineral commodities, which are occurring and can be used: quartz, quartzite, garnet, kyanite, rutile and zircon.

Estudo da viabilidade de uma gestão ambiental de pilhas no campus da Unesp de Rio Claro

When exhausted, the batteries are classified as hazardous waste because it has potentially toxic heavy metals and bio-accumulators, such as mercury, cadmium and lead in their internal composition functional. Due to the high level of danger, such waste should be properly designed to not allow theses chemical components to cause significant impacts on the environment. Thus, the recycling of waste in question is the best destination. In this context, was wanted to know, through a questionnaire in interview format, how the graduates of the Universidade Estadual Paulista Julio de Mesquita Filho of Rio Claro / SP are involved with this environmental issue. Since then, has been developed and implemented an environmental management for internal batteries

A leitura promovendo o uso adequado da variação linguística e do letramento

This Work focuses the importance of children‟s literature with the insertion of authors‟ like Aesopo, La Fontaine and Monteiro Lobato in the early years of elementary school, so that children could develop their reading that could bring reflections about the use of the language. It entends to show that books can give kids maturity to notice that when it comes to language there‟s not righ or wrong, but contexts that they should fit, in so that they can communicate and decrease the language prejudice. The authors studied in this study are the ones who study the language, the importance of children‟s literature and language prejudice at schools. This work was done through quantitative and qualitative approach, divided into 2 parts, observation and interventions, the research could be in touch with the observed class and get information about the students. Later the researcher could act by telling stories and get data. A third-grade class in a public school in the year of 2010, was observed during the internship in the early years of elementary school compared to another fourth grade class of another public school. The results and analisis oh the data show kids‟ lack of contact with an appropriate children‟s literature, like the fables which are short tales with moral and romance like Emília no País da Gramática by Monteiro Lobato, would make it difficult to learn the production of consistent texts and appropriate language in different contexts. Schools play an important role for kids to be in touch with these good books, so they should have the main role in the children‟s development and background, making them able to be aware of the importance of reading and writing in their lives. Most of the children found it difficult to write texts, but in the end they reached a god level of language related to the proposed context, writing consistent texts, but the part of children still mistake and in literacy and language adaptation

Alfabetização: o texto e o contexto

This paper is the result of a research about literacy concept from official documents, dictionaries and linguists. As an expansion of literacy concept was observed through last century, this investigation searched for an opposite way, in other words, a contraction of the literacy concept in order to clarify its nature and this way to be the starting point for literacy teachers. The best way to literacy happens was also part of the research, then the text was considered like that, since it is a real communicative situation. Besides it should be a meaning system which can be accessed again any time. It would include many kinds of texts – oral or written – as long as they were recorded somehow. The best text form was investigated as well, in other words, the best speech genre for teaching literacy, once there are important elements which should be considered during the literacy acquisition, such as the encouragement to read and to think about the correct writing of the words. In the end, considerations were made concerning the literacy teacher‘s awareness about the context change when the text is used in a scholar context and about the skills acquired by the students which should be transported to other texts in varied contexts

Criação de novo procedimento de engenharia que possibilite a rastreabilidade das tubulações de uma indústria química

The number of piping in an industry is high. Through this piping are conducted several kind of products at several temperature and pressure conditions. In a chemical company, the piping quantity conducting harmful chemical products to human health and to the environment is higher. Nowadays the theme sustainability is often mentioned and harm to environment may cause irreversible damage to the human being, to the fauna, to the flora and to company´s credibility. In this context, controlling over the piping to avoid accidents is mandatory. The objective of this monograph is to create a procedure which enables the chemical companies piping traceability. This monograph analyses the several existent traceability system in the three economy sectors and approaches the technical question of industrial piping in order to create a procedure that achieves its objectives as a technical document and at the same time be economically feasible, with low complexibility level and high practicability. Some possibilities to elaborate this procedure had been studied, as the creation of an alphanumeric code and making with a chisel in the pipeline based on ASTM F2897 and the use of chips to store the information. However, the procedure which best meet the requirement as low cost and high applicability is filling out an electronic plan with information about welding process, welding certification, welding consumables and inspections

Análise dos royalties do petróleo sob a perspectiva jurídica

This research aims to discuss the division of royalties from a legal perspective and its substitute role towards the non-taxation at source, in other words the taxation of destiny at the Brazilian petroleum industry. The analysis aims to deal with the historical evolution in relation to the aspect of royalties’ payment and its deviation of compensatory character in order to supply the ICMS function. There are some specific study objects in this research: 1. how the transformation of royalties’ payment led to financial compensation; 2. to whom the transference of mineral rent belongs – to the UNIÃO or to the fortunate regions which the oil is extracted; 3. would a tax reform be enough to minimize the competition of States and Cities towards the royalties? The research aims to clarify the real expectation that States have on the royalties’ payment. There is no compensation for damage to the environment as it is stated by the initial characteristic of the Constitution, and, by the contrast, from a compensatory character, there is a lacking of taxation from the sector mentioned before, this fact damages the producing states checked out by this research

Estudo da influência das resinas termofixas uréia formaldeído (UF) e melamina formaldeído (MF) nas características físicas e mecânicas de painéis MDF

Thermosetting resins are very important in the production of MDF panels. They act as an adhesive in the process of compacting and consolidating the fiberboard. Thermoset resins commonly used in this process are based resin urea formaldehyde (UF) and melamine formaldehyde (MF). The first has a higher demand due to its low cost and good performance in meeting the specifications and standards. The second has a high cost compared to MF resin, but adds greater value to the MDF panel, because it gives greater moisture resistance. The process of manufacture of MDF boards was briefly presented in this study to facilitate the understanding of the work. Samples of thermosetting resins (UF and MF) were subjected to physical-chemical seeking to relate these results to the technological performance presented by their respective samples of MDF boards. Two other samples of MDF panels were subjected to physical and mechanical tests. Results were analyzed and related to the award of their respective thermoset resin. Instruments like Dahmos Trend Manager ® and Grecon Dax 5000 and TG - DSC analysis were used in this study to assist in the analysis of the results. It was observed that the results of the analysis of thermosetting resins were within the specified. Such resins do not directly influence the technological tests provided by the MDF panels, but it has been found that the process variables such as humidity and fiber production rate interfere with the performance of the resin accelerating the reaction and therefore their influence on the physical-mechanical properties of the panels MDF. Samples of MDF panels with UF and MF met all the specifications required by the Brazilian standard with regard to the technological quality. The increased demand for UF resin market is justified by the service specifications...

Podridão floral dos citros: controle preventivo mediante fungicidas, biorreguladores e fertilizantes químicos

Pós-graduação em Agronomia (Produção Vegetal) - FCAV

Avaliação física e radiográfica dos carpos, tarsos e articulações interfalangeanas de touros de raças zebuínas em regime de colheita de sêmen

Pós-graduação em Medicina Veterinária - FCAV

Estimativa da erosão na microbacia do Córrego do Gambá no município de Monte Alto, SP

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

A abordagem histórica do letramento: Ecos da memória na atualidade

The word literacy acquired a polysemy spectrum which put it away from the notion of social and historic process, at the same time that associates it to codification and decodification of writing. Concerning to this last perspective, we would have nothing to add. However, we sustain, in this paper, considering Pêcheux´s Discourse Analysis and Lacanian Psychoanalysis approaches, that there is a conception of literacy as a phenomenon which influences indirectly individuals and cultures for whom the competence of writing is not established. In this sense, the concept of literacy is larger than alphabetization. As an evidence of this proposal, we analyze a text written by a student, that demanded him to write about a context distant from his own, and, to do so, he mobilized places from the archive and from his particular memory, showing a singular knowledge of writing culture, even though his text presents interpenetration of oral an writing forms, aspect that is not allowed by those who defend an a-historical conception of literacy. We discuss that the student’s text ran away from the reduction of a merely pedagogic ideology and reflects a discursive coherence in face of the challenge that was proposed to him. By the end of this paper, we propose that the teachers should search for devices that make easier for their students to write texts in which their authorship could emerge.

Como é possível o conhecimento matemático: uma análise a partir da epistemologia genética

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