A objetivação da linguagem no (con)texto do vestibular : mo(vi)mentos na história e no político

In this study, we join up in the theoretical assumptions of the French Discourse Analysis in order to analyze effects of the demand of objectification of language in the context of vestibular essays. More specifically, we analyze the operation of said objectification via discourses constructed by the traditional vestibular exam due to the requirement to have, in the students’ essays, paraphrases of statements from the motivating texts (TM) of the test in question. From our perspective, the objectification mechanism of language, the paraphrase, in the vestibular, its logic of clarity and non-contradiction of ideas, is made by (in)determination of senses in the order of its speech and, also, in its practice: the correction of the vestibular essay. Therefore, in spite of what is assumed as guarantee to language in the moment of the vestibular essay, we suggest there are regularization-recognition conflicts of same senses— the constitutive senses of TM — in the evaluative speech of two vestibular-essay correctors(CA and CB). These correctors, with their history of reading (grammar and Linguistic Textual), stress the concept of paraphrase taken by the vestibular instance for the correction of students’ essays. Such stress creates a dispute of speeches: the speech of knowledge (university policy) versus the speech of produce (neoliberal policy); the latter as reading policy that favors literal meanings, consensus. Because of all this, we question: what are the effects of senses produced in (and about) vestibular essays by the demand of determining of the saying there instituted? To answer this question, we build analysis from clippings of documents that regulate the vestibular exam (institutional texts) in our country and, also, analysis of two vestibular essays in which at times appear, at times not, according to the judgment of CA and CB of essays, paraphrases of TM statements of the essay. The analysis, in theory, punctuates effects of sense of the objectification process of the saying in vestibular, and primarily the rarefaction of legal-position subject-of-knowing by the current institution of the subject-of-making. Moreover, our work comprises affiliations of sense that relates to the subject-speech relationship in evaluative exercise of vestibular essays, on the question of authorship.

Determinação de teor de biodieseis de algodão e pinhão manso em misturas com diesel usando espectroscopia no infravermelho médio e quadrados mínimos parciais

Biodiesel is a renewable fuel derived from vegetable oils or animal fats, which can be a total or partial substitute for diesel. Since 2005, this fuel was introduced in the Brazilian energy matrix through Law 11.097 that determines the percentage of biodiesel added to diesel oil as well as monitoring the insertion of this fuel in market. The National Agency of Petroleum, Natural Gas and Biofuels (ANP) establish the obligation of adding 7% (v/v) of biodiesel to diesel commercialized in the country, making crucial the analytical control of this content. Therefore, in this study were developed and validated methodologies based on the use of Mid Infrared Spectroscopy (MIR) and Multivariate Calibration by Partial Least Squares (PLS) to quantify the methyl and ethyl biodiesels content of cotton and jatropha in binary blends with diesel at concentration range from 1.00 to 30.00% (v/v), since this is the range specified in standard ABNT NBR 15568. The biodiesels were produced from two routes, using ethanol or methanol, and evaluated according to the parameters: oxidative stability, water content, kinematic viscosity and density, presenting results according to ANP Resolution No. 45/2014. The built PLS models were validated on the basis of ASTM E1655-05 for Infrared Spectroscopy and Multivariate Calibration and ABNT NBR 15568, with satisfactory results due to RMSEP (Root Mean Square Error of Prediction) values below 0.08% (<0.1%), correlation coefficients (R) above 0.9997 and the absence of systematic error (bias). Therefore, the methodologies developed can be a promising alternative in the quality control of this fuel.