Farelo do bagaço de caju na restrição alimentar qualitativa para suínos em terminação

The objective of this study was to evaluate the effects of the use of cashew bagasse bran (CBB) as food ingredient in qualitative feed restriction programs on the carcass traits, meat quality, organs weight and intestinal morphometry of barrows and gilts. Twenty – four crossbred pigs were used (12 barrows and 12 gilts) with an average initial body weight of 57.93 ± 3.67 kg/LW. The experimental designs was in randomized blocks 3x2 factorial arrangement with three level (0%, 15% e 30% CBB), two genders (barrows and gilts) and four repetition. A total of twenty-four instalments. The treatments were composed of basal diet (BD) formulated with corn, soybean meal and commercial base mix for finishing pigs, being containing different levels of CBB. At the end of the trial period the animals were slaughtered for the evaluation of the meat quality, traits carcass, Absolute Weight (AW) and Relative Weight (RW) of the organs and morphometric study of small intestine fragment. The inclusion of (CBB) in the diets did not affect the traits carcass of gilts, but interfered in the traits carcass of the barrow positively, increasing the yield of meat into cold carcass and reducing the thickness of subcutaneous fat, without affecting the fatty acid profile. However, we observed increased weight of organs and partial volume of absortiva mucosa of gilts. In the comparison between sex was observed a greater liver weight (AW) and (RW), and surface density of absortiva mucosa of barrow. The use of CBB was considered as ingredient to be used in programs of qualitative feed restriction for finishing pigs.

A mediação do professor na constituição da autoria em textos de alunos de Letras

Textual composition in classroom has been object of research in language studies along this last three decades in Brazil. This thematic recurrence occurs is a demonstration of the gap between writing skill teaching and learner‟s performance. In this research, we argue that during writing process in classroom, teachers‟ mediated actions guide students to the exotopic exercise on their texts, facing it as a fundamental phase of their composition, with meaningful effect for the development of textual authorship. In this sense, we have chosen as investigation focus the textual composition of Letters Students at Universidade do Estado do Rio Grande do Norte – UERN - to study writing processual characteristics, based on teacher‟s mediation. The main aim of this research is to analyze students‟ (re)writing along Letters Course, to comprehend the process of authorship construction in their texts and the effects resulted through teacher mediation in this process. More specifically, a) to analyze teacher mediation as a mechanism for authorship development in texts composed by Letters Students; b) to deduce, based on different versions of textual composition, the effects of teacher mediation on students‟ writing; and c) to describe compositional textual process in classroom, identifying students‟ attitudes/behaviors before writing task. We have brought several voices into the dialogue, among them we highlight those based on bakhtinian studies. Some of those authors are related to Bakhtin circle, by themselves (BAKHTIN/VOLOCHINOV, [1929] 2006; BAKHTIN, [1979] 2003; [1963] 2008; [1975] 2010a; [1986] 2010b), their debaters (FARACO, 2008, 2009a, 2009b, 2010; PONZIO, 2010, 2012; GERALDI, 2010a; 2010b OLIVEIRA, 2006, 2008a, 2008b, 2010, among others), to guide us, mainly, on dialogism, author and authorship, and their conceptual implications: exotopy, finishing, esthetic activity, and ethical act. Data was constituted in teaching situation, involving teacher/researcher and 5th Term Letters/UERN students. Therefore, we have submitted an open questionnaire, textual discussion, and an article (re)writing. Data analysis has revealed subjects‟ little experience with writing composition in the Course, as a systematic practice, in their routine, dialogued, whose social function is explored. The texts are generally written in a single version and useful only to receive a score. Data analysis show insecure students in relation the writing, and with many difficulties to do it. On the other hand, writing movements, on the analyzed articles, have revealed that the subjects show a responsive attitude in relation to the mediated activities, to respond rewriting proposal. Despite some problems remain unsolved and many others emerge in each version of the article, in general, we consider that teacher mediation had a positive effect on student writing, considering that it boosted the author exotopic movement, something indispensable to compose a text. The three interventions carried out, in some way, provided opportunity for the subjects to modify their article.

A mediação do professor na constituição da autoria em textos de alunos de Letras

Textual composition in classroom has been object of research in language studies along this last three decades in Brazil. This thematic recurrence occurs is a demonstration of the gap between writing skill teaching and learner‟s performance. In this research, we argue that during writing process in classroom, teachers‟ mediated actions guide students to the exotopic exercise on their texts, facing it as a fundamental phase of their composition, with meaningful effect for the development of textual authorship. In this sense, we have chosen as investigation focus the textual composition of Letters Students at Universidade do Estado do Rio Grande do Norte – UERN - to study writing processual characteristics, based on teacher‟s mediation. The main aim of this research is to analyze students‟ (re)writing along Letters Course, to comprehend the process of authorship construction in their texts and the effects resulted through teacher mediation in this process. More specifically, a) to analyze teacher mediation as a mechanism for authorship development in texts composed by Letters Students; b) to deduce, based on different versions of textual composition, the effects of teacher mediation on students‟ writing; and c) to describe compositional textual process in classroom, identifying students‟ attitudes/behaviors before writing task. We have brought several voices into the dialogue, among them we highlight those based on bakhtinian studies. Some of those authors are related to Bakhtin circle, by themselves (BAKHTIN/VOLOCHINOV, [1929] 2006; BAKHTIN, [1979] 2003; [1963] 2008; [1975] 2010a; [1986] 2010b), their debaters (FARACO, 2008, 2009a, 2009b, 2010; PONZIO, 2010, 2012; GERALDI, 2010a; 2010b OLIVEIRA, 2006, 2008a, 2008b, 2010, among others), to guide us, mainly, on dialogism, author and authorship, and their conceptual implications: exotopy, finishing, esthetic activity, and ethical act. Data was constituted in teaching situation, involving teacher/researcher and 5th Term Letters/UERN students. Therefore, we have submitted an open questionnaire, textual discussion, and an article (re)writing. Data analysis has revealed subjects‟ little experience with writing composition in the Course, as a systematic practice, in their routine, dialogued, whose social function is explored. The texts are generally written in a single version and useful only to receive a score. Data analysis show insecure students in relation the writing, and with many difficulties to do it. On the other hand, writing movements, on the analyzed articles, have revealed that the subjects show a responsive attitude in relation to the mediated activities, to respond rewriting proposal. Despite some problems remain unsolved and many others emerge in each version of the article, in general, we consider that teacher mediation had a positive effect on student writing, considering that it boosted the author exotopic movement, something indispensable to compose a text. The three interventions carried out, in some way, provided opportunity for the subjects to modify their article.

Rugosidade superficial e adesão bacteriana em compósitos com nanopartículas após acabamento e polimento

Objective: To evaluate in vitro the surface roughness and bacterial adhesion of nanoparticle composites, after being subjected to different finishing and polishing systems. Materials and Methods: 66 specimens were prepared, and 30 with Filtek Z350 XT (3M ESPE, USA) and 30 with the resin IPS Empress Direct (Ivoclar Vivadent, USA), divided into 6 groups (n = 10 ). Six specimens were prepared for analysis in scanning electron microscopy (SEM) .Each kind of resin was subjected to finishing and polishing systems: Sof-Lex Pop-On discs (3M ESPE, USA) and AstropolTM system (Ivoclar Vivadent , USA), featuring the experimental group. The control group did not undergo any kind of finishing and polishing technique. The average roughness (Ra) in both groups was measured using a roughness in the setting of 0.25 mm (cut off) and surface images obtained with photomicrographs taken with a scanning electron microscope (SEM) magnified 500 times. Bacterial adherence was evaluated by determining the absorbance (OD) of the suspension of adhered cells by spectrophotometer at 570 nm. The results were submitted for analyzed with 2-way ANOVA at α=.05 and Tukey multiple comparison tests. Results: Statistically significant differences were found between the groups in terms of roughness and bacterial adhesion. Filtek Z350 XT for resin were no differences between the tested finishing and polishing systems, where the system of lowest surface roughness was the Sof-Lex Pop-On. To the resin IPS Empress Direct, the finishing and polishing system Astropol, had lower results of surface roughness. As for bacterial adhesion, the lowest optical density value for Filtek Z350 XT was for the group that used the finishing and polishing system Sof-Lex Pop-On and the resin IPS Empress Direct the group that used the Astropol system. In addition, there was a positive correlation between surface roughness and bacterial adhesion on polished surfaces (r = 0.612) Conclusions: surface roughness and bacterial adhesion are closely related. The finishing and polishing Sof-Lex Pop-On system is more suitable for nanoparticulate Filtek Z350 XT and the finishing and polishing system Astropol for resin nanohíbrida IPS Empress Direct.

O ouro branco abre caminho: o algodão e a modernização do espaço urbano da Cidade da Parahyba (1850-1924)

The present research deals with the modernization process of the Cidade da Parahyba2, between 1850 and 1924, and its relation with the cotton economy, which represented the main source of wealth accumulation for both the private and the public sectors throughout the First Republic. This study on urban history was developed by focusing on the understanding of the city s spatial formation, and despite its emphasis on the economic aspects involved, other factors that also contribute to the development of the social life were not put aside. The modernization process of the Cidade da Parahyba was also analyzed during the period established for the study according to a chronological and thematic approach that established comparisons with the financial situation of the State, whenever this was necessary, with special attention to the contribution of the cotton economy to the State´s revenues. It was possible to detect a lack of financial help and loans from the federal and municipal administrations for finishing several public works already underway in the capital, since the federal funds allocated to the State of Parahyba do Norte were rather employed in emergency works against droughts and in agricultural development. One can then conclude that the financial resources required for the urban interventions were withdrawn from the State s treasury itself, resources that were collected mainly from activities such as cotton exportation and cotton trading. Another factor shows the interdependence between the urban remodeling and the cotton economy: during the years marked by great droughts or by hard plagues on the cotton plantations, cotton production decreased, as well as the State s finances. The first measures taken by the State s administrators were to halt all projects of urban remodeling in progress in the Cidade da Parahyba, which was, clearly, the most privileged city by the State s presidents during the period analyzed. 2 The city of João Pessoa was named Cidade da Parahyba, a designation that remained until September 1930, when it received its present-day name in order to pay homage to the president of the State, João Pessoa Cavalcanti de Albuquerque, murdered in the city of Recife in August of that same year. At that time, the State of Paraíba was known as Parahyba do Norte. Since this work is limited to a period of time comprised within the First Republic, the names employed respect the terms used in those days

Estudo do comportamento plástico, mecânico, microestrutural e térmico do concreto produzido com resíduo de porcelanato

Population growth experienced in major cities, allied to society s need of infra-structure, especially ones related to habitational demands, increases the consumption of construction materials. As a consequence, consumption of natural resources itself. Thus, due to this process, concrete is one of the most produced materials in civil construction. This is also due to the great diversity of its application, easiness in its execution and adequate mechanical performance, as well as low production costs. Following the same tendencies in construction development, the ceramic industry has intensified the production of porcelain ceramic tiles and floors. These are achieved by a fine finishing and receive polishing at the end of the fabrication process. This work researched the use of porcelain residues in polishing for the production of concrete. All of which; due to economical and environmental issues. This process aims to prove adequate destiny for this type of residue, due to environmental issues, incorporating it to the concrete itself; all of which provides economy in consumption of the materials that constitute concrete. Thus, the main characteristics of concrete were investigated through the inclusion of different concentration of the porcelain residue as additional trait element. The residue rates incorporated to the trait varied from 10% to 50% in relation to the cement mass, in the traits with plastic additives and without plastic additives. It is observed that the inclusion of porcelain residue produced a meaningful alteration in the consistency of fresh concrete. This residue has a fine granulometry and it considerably absorbed the water used in the concrete spreading, influencing the way this material is dealt with. Thus, the value of cement striking decreases with the increase of residues present in trait. The maximal incorporation of the residue was of 50%, massively, for the same factor water/initial cement. The use of residues in concrete results in an 40% increase in the compression resistance. It is also proportional to residue concentration of porcelain in the trait. The microstructure was also favored once porosity and concrete absorption decreases with the use of this residue. The parameters demonstrate the quality and durability of the concrete produced with this residue. The use of porcelain residue in concrete composition has not produced meaningful thermal behavior changes. Thermal conductivity, heat capacity and thermal diffusivity have been maintained basically constant

Estudo sobre a influência do massará no processo de formação de salitre em rebocos na região de Teresina - PI

This work had to verify the influence of massará, while mortar component, in the process of formation of saltpeter in cementitious plaster walls of buildings. The massará is a ceramic material, texture areno usually found in large volumes argillaceous sediments in Teresina, Piaui State capital, which is associated with the Portland cement mortar form for fixing and finishing in construction. Saltpeter or flowering is a pathology that happens in gypsum wallboard, which invariably reaction between soluble salts present in materials, water and oxygen. This pathology, supposedly credited to massará caused its use to suffer significant reduction in the market of the buildings. Verify this situation with particular scientific rigor is part of the proposal of this work. Grading tests Were performed, consistency limits (LL, LP and IP), determination of potential hydrogen, capacity Exchange (CTC), electrical conductivity (EC), x-ray fluorescence (FRX) and x-ray diffraction (DRX). Massará analysed samples in number six, including sample plastering salitrado presented potential hydrogen medium 5.7 in water and 5.2 on KCl n and electrical conductivity (EC), equal to zero. These results pointed to the affirmative that massará is a material that does not provide salinity content that can be taken into consideration. It is therefore concluded that the material analyzed not competing, at least with respect to the presence of soluble salts, for the formation of saltpeter

Avaliação da incorporação combinada dos resíduos de cascalho de perfuração de poço de petróleo e de polimento do porcelanato em cerâmica vermelha

Among the industries, those that produce ceramic porcelain for use in construction industry and oil, during the exploration and production period, play an important role in the production of waste. Much research has been carried out both by academia and the productive sector, sometimes reintroducing them in the same production line that generated them, sometimes in areas unrelated to their generation, as in the production of concrete and mortar for the construction, for example, but each one in an isolated way. In this research, the aim is to study the combined incorporation of the waste drill cuttings of oil well and the residue of the polishing of porcelain, generated in the final stage of finishing of this product in a clay matrix, for the production of red pottery, specifically bricks, ceramic blocks and tiles. The clay comes from the municipality of São Gonçalo, RN, the drilling waste is from the Natal basin, in Rio Grande do Norte, and the residue of the polishing proceeds from a ceramic porcelain of the State of Paraíba. For this purpose, we used a mixture of a plastic clay with a non-plastic, in a ratio of 50% each, settling formulations with the addition of these two residues in this clay matrix. In the formulations, both residues were incorporated with a minimum percentage of 2.5% and maximum of 12.5%, varying from 2.5% each, in each formulation, which the sum of the waste be no more than 15%. It should be noted that the residue of the polishing of ceramic porcelain is a IIa class (not inert). The materials were characterized by XRF, XRD, TG, DTA, laser granulometry and the plasticity index. The technological properties of water absorption, apparent porosity, linear shrinkage of burning, flexural tensile strength and bulk density were evaluated after the sintering of the pieces to 850 °C, 950 °C and 1050 °C, with a burning time of 3 hr, 3 hr and 30 minutes, and 3 hr and 50 minutes, respectively, with a heating rate of 10 °C/minute, for all formulations and landing of 30 minutes. To better understand the influence of each residue and temperature on the evaluated properties, we used the factorial planning and its surfaces of response for the interpretation of the results. It was found that the temperature has no statistical significance at a 95% of reliability level in flexural tensile strength and that it decreases the water absorption and the porosity, but increases the shrinkage and the bulk density. The results showed the feasibility of the desired incorporation, but adjusting the temperature to each product and formulation, and that the temperatures of 850 °C and 950 °C were the one that responded to the largest number of formulations