Socioeconomic factors in the production of fresh cheese in family agribusiness of Viçosa, MG, Brazil [Fatores socioeconômicos da produção de queijo minas frescal em agroindústrias familiares de vic ̧osa, mg]
Vinha M.B.,Servico Nacional de Aprendizagem Industrial SENAI |
de Oliveira Pinto C.L.,Empresa de Pesquisa Agropecuaria de Minas Gerais EPAMIG |
Souza M.R.,EPAMIG |
Chaves J.B.P.,Federal University of Viçosa
Ciencia Rural | Year: 2010
The production of minas frescal cheese in familiar agribusiness is widely diffused in Minas Gerais State, associated to cultural tradition, consumer demand and product yield. The objectives of this study were to evaluate socioeconomic aspects on the production of minas frescal cheese produced in familiar agroindustries in the city of Viçosa-MG, Brazil and to characterize the main difficulties in this sector. Data were collected by the in loco interview method in 12 agribussiness, six of them inspected and six not inspected. The familiar producer income obtained from the production of minas frescal cheese varied from 10% to 85% of the total familiar income, with higher percentages for the inspected agribusiness. In 83%of the inspected agroindustries, the total income was linked to the production of the cheese. The obstacles in the formal production included the competition with informal products, low price and difficulty of access to credit lines, and, for informal producers, included also lack of raw material and manpower, seasonal variation of production and the absence of adequate production infrastructure. The production of minas frescal cheese is a relevant activity on the composition of agribusiness familyincome, however, there is a need to implement local public policies to better structuring of the sector, which will contribute for sustainability of the familiar production.
Mozetic H.,Centro Universitario Ritter dos Reis |
Boff U.,Centro Universitario Ritter dos Reis |
Luna W.H.D.,Servico Nacional de Aprendizagem Industrial SENAI |
Pfingstag M.E.,URI Integrated Regional University Brazil |
And 3 more authors.
Journal of Electrical Systems | Year: 2016
The purposes of this paper were to study the thermal treatment of Fe-Si sheet, as well as the sheet cutting concerning the topology of a mini stepper motor and mini motor simulation using finite element software. The research consisted of the execution of an "Inductive Reheating" thermal treatment of Iron Silicon sheets, NM71-2000/35F 420M with GNO (Grain Non Oriented), and 0.35mm width. The new technique has the benefit of minimizing magnetic losses produced by the cut on the edge of electric sheets. To carry out the process, the system includes a furnace, an induction coil, and a power supply that, when activated in a controlled way, causes relevant changes to the crystalline structure of the material. Related to the cut of the sheets, the topology of a three phase mini stepper motor was considered. The sheets were initially cut using the geometry of the rotor and stator cores. Firstly, a die cutting process was used and later a wire electroerosion cutting process was employed, which provided parts with excellent finishing. Finally, the mini motor was simulated using the finite element software FEMM 4.2 in order to analyze the airgap flow and torque development of the axis end, in comparison to a solid block of the same material (Fe-Si). Copyright. © JES 2016.
Braga M.S.,University of Sao Paulo |
Matos K.R.M.,Servico Nacional de Aprendizagem Industrial SENAI |
Borges V.F.,University of Sao Paulo |
Gomes O.F.,University of Sao Paulo |
Salcedo W.J.,University of Sao Paulo
Chip in Curitiba 2013 - SBMicro 2013: 28th Symposium on Microelectronics Technology and Devices | Year: 2013
Photoluminescence quenching-based sensors for oxygen detection are generally made with organic dyes molecules that act as active molecules. These molecules are normally immobilized into polymeric host substrate that doesn't have any compatibility with silicon technology. In this work we report a photoluminescence (PL) quenching based oxygen sensor using oxidized porous silicon layer as a host matrix for platinum-octaethylporphyrin (PtOEP) dye molecules. The device in this substrate is high sensitivity because its high surface area and it may have high compatibility with silicon technology since porous silicon is obtained on silicon substrate. The sensitivity to O 2 detection of this sensor was 13 times higher than to conventional devices based on polystyrene layer and its response time was 3 times slower than polymeric based devices. In the present work, the detection mechanism and the response time of these sensors are discussed. © 2013 IEEE.
Kossar M.J.,Servico Nacional de Aprendizagem Industrial SENAI |
Amaral K.J.,University of Stuttgart |
Amaral K.J.,Positivo University |
Erbe M.C.L.,Federal University of Paraná
Water Practice and Technology | Year: 2013
The reuse of wastewater by the pulp and paper industry reduces environmental impacts by contributing to raw water conservation, thereby making a greater volume of fresh water available for nobler purposes, and reducing wastewater treatment. This study evaluated a proposed system of water reuse at a Kraft pulp and paper plant in Brazil, based on a survey of water quality required by its consumption points, supplied by its water treatment plant. Results after ultrafiltration included: turbidity of 0,3 NTU and pH 7,5, average values of BOD 66,4 mg/L, COD 9,6 mg/L and the colour of 280,5 ppm Pt were measured after ultrafiltration. The ultrafiltered wastewater was considered available for reuse, and its quality was compared with that of the water supplied by the water treatment plant, which provided for the classification of potential reuse points. Water colour was identified as the limiting factor for reuse; thus the reuse points were two Kraft paper machines, and the water flow to the liquid ring formations that generate the vacuums inside nineteen pumps for these two machines. The advantages of this proposal for water reuse include: ultrafiltered water quality sufficient for the vacuum pumps, the small distance between the point of reused water generation and the paper machines section, and the reused water has no contact with the final product. The calculated cost and return time for the water reuse system was US$ 607.020,00 in 15 years. © IWA Publishing 2013.
de Santana M.C.C.B.,Federal University of Bahia |
Machado B.A.S.,Servico Nacional de Aprendizagem Industrial SENAI |
da Silva T.N.,Federal University of Bahia |
Nunes I.L.,Federal University of Bahia |
Druzian J.I.,Federal University of Bahia
Ciencia Rural | Year: 2013
The objective was to develop and characterize a biodegradable packaging using chitosan as polymeric matrix, plasticized with glycerol, as well as evaluate the effect of adding a natural antioxidant additives (annatto) in antioxidant protection in packaging. The cans were prepared by casting containing 1.5% of chitosan, 0.15% glycerol and 0.25 to 1.0% of coloring. Palm oil packed with the films containing the additive was monitored at 0, 7, 15, 30 and 45 days of storage under accelerated oxidation conditions (63% UR/30°C). Palm oil packed in the film that contained the highest percentage of annatto (1.0%) was the least oxidized during the study period. It was found that, as they increase the losses of phenolic compounds in the formulations of the films, there is a reduction in the peroxide increases the packaged product, thus demonstrating that instead of the product, the compounds of the package's who are suffering oxidation.
Santos P.A.,Servico Nacional de Aprendizagem Industrial SENAI |
Altuna J.A.T.,Federal University of ABC |
Casella I.R.S.,Federal University of ABC |
Sguarezi Filho A.J.,Federal University of ABC |
Capovilla C.E.,Federal University of ABC
IEEE Latin America Transactions | Year: 2015
The employment of PWM drives in induction motors control has been widely used in industry. However, in some applications in hazardous areas, such as drilling, the PWM drive cannot be physically close to the motor, being necessary the use of long cable drives. This fact leads to the generation of overvoltage peaks on the induction motor terminals, which can cause interference in the speed control, reduction of equipment lifetime, or even, permanent damages. In this context, this work presents alternatives to minimize the overvoltage effect based on the use of transformers and analyzes the performance of the speed control of each proposed technique. © 2003-2012 IEEE.
Mendes Vasco A.,University of Northern Paraná |
Abrahao Amaral M.,Federal Technological University of Paraná |
Sardinha Martins N.,Servico Nacional de Aprendizagem Industrial SENAI |
De Fatima Bartholo V.,University of Northern Paraná
IEEE Latin America Transactions | Year: 2011
The use of technology is bringing about changes in education. Teaching through the computer gives a position to acquire concepts about any field of knowledge. In this context, learning objects are presented as a possibility to enhance the procedure for implementing the curriculum because they are considered portions of content that can be reapplied to different audiences in different situations. This paper describes the principles that underlie the creation of a Learning Object Science and its application in order to contribute to the concepts of Soils of elementary education. © 2011 IEEE.
Costa F.D.,Servico Nacional de Aprendizagem Industrial SENAI |
Teo C.R.P.A.,Chapecó Region Community University |
de Almeida J.S.,Chapecó Region Community University
Scientia Medica | Year: 2015
Aims: To analyze stress vulnerability in the work context and its effects on feeding. Methods: Cross-sectional study of industrial workers from Santa Catarina state, southern Brazil. The occupational stress vulnerability scale (OSVS) and a structured questionnaire were used as instruments. Six sociodemographic and occupational variables (age, sex, schooling, work shift, work sector/unit, duration of employment), level of stress vulnerability (according to the OSVS), in addition to five nutritional variables which took into account self-reported stress rather than the vulnerability evaluated by the OSVS were assessed. Student's t test, Pearson's chi-square test, and linear trend were used for data analysis, and statistical significance was set at 5% (p ≤ 0.05). Results: A total of 309 industrial workers were assessed. The mean age was 30.9±10.1 years; 60.2% were women; 44.7% had attended high school; and 25.5% had finished elementary school. The median duration of employment was about 23 months (interquartile range of 7-57); 81.6% worked during the day, and 18.4% at night. The mean score of stress vulnerability was 22±11.6 points; 249 (80.6%) workers were classified at the lower levels of stress vulnerability and 60 (19.4%) at the upper ones. There was association between increased stress vulnerability according to the OSVS and self-reported changes in feeding (p=0.028). The prevalence of high stress vulnerability increased (p = 0.034) with duration of employment (p = 0.034). Under self-reported stress, women had more hunger, changes in feeding, and preference for sweets (p < 0.001). Conclusions: The industrial workers showed prevalence of lower levels of stress vulnerability, with pressure at work representing the main stressor. Higher levels of stress vulnerability were associated with increased duration of employment as well as with the perception that work causes stress and interferes in feeding. The finding that, under a self-reported occupational stress condition, the prevalence of perceived change in feeding was higher among women, associated with increased hunger and preference for sweets, indicates a greater vulnerability of this group, with potential risks for health problems.
Chemical and sensory characteristics of pulp and peel 'cajá-manga' (Spondias cytherea Sonn.) jelly [Caracterização química e sensorial de geléia da casca e polpa de cajá-manga (Spondias cytherea Sonn.)]
Lago-Vanzela E.S.,São Paulo State University |
Ramin P.,São Paulo State University |
Umsza-Guez M.A.,Servico Nacional de Aprendizagem Industrial SENAI |
Santos G.V.,São Paulo State University |
And 2 more authors.
Ciencia e Tecnologia de Alimentos | Year: 2011
Cajá-manga (Spondias cytherea) is a fruit with intense aroma and a sweet sour taste, thus being very appreciated. Its peel, in spite of being more fibrous, is tender and many times consumed with the pulp. The peel is a part of foods normally discarded, but many times, it is rich in taste and fibers, representing an option at the elaboration of new foods. Since there are no reports in the literature on the use of cajá-manga peel for jelly making, this work had the purpose of developing and evaluating this product. Based on the results, it was noted that the peels presented higher contents of protein, lipids, ashes, food fiber, total carbohydrates and pectin, and lower content of moisture, when compared to the pulp. The peel and the pulp (control) jellies presented the following physical-chemical characteristics: moisture, 29.5 and 34.2%; proteins, 0.19 and 0.27%; lipids, 0.11 and 0.16%; total sugars, 56.5 and 65.5%; and total soluble solids, 69 and 66 °Brix, respectively. The sensory analysis indicated that the product elaborated from the peel presented satisfactory acceptance for all the assessed attributes: appearance, color, odor, texture, taste and global evaluation. It is concluded that the total substitution of the pulp by the peel in the formulation, results in a product with good nutritional value with no sensory damages.
Performance of a Fenton reactor on an industrial scale applied to the removal of phenols in a waste recovery plant from the pulp and paper industry [Desempenho de um reator Fenton em escala industrial aplicado à remoção de fenóis em uma planta de recuperação de resíduos da indústria de papel e celulose]
Skoronski E.,Santa Catarina State University |
Ferrari A.,Servico Nacional de Aprendizagem Industrial SENAI |
Fernandes M.,Centro Universitario Unifacvest |
Ely C.,Santa Catarina State University |
Joao J.J.,University of South Santa Catarina
Revista Ambiente e Agua | Year: 2015
This paper describes the performance of a Fenton reactor on an industrial scale applied to the removal of phenols in a waste recovery plant from the pulp and paper industry. The effluent consists of vegetal oil and phenol. The treatment plant is designed to treat 4 m3 h-1 and consists of a pre-treatment for oil removal, a Fenton reactor and an extended aeration tank. Internal and external analyses of the effluent were performed in order to evaluate the treatment plant. The overall efficiency of phenol removal was higher than 99.7%. It was demonstrated that the combination of biological and advanced oxidative process is a promising method of removing recalcitrant contaminants. © 2015, Institute for Environmental Research in Hydrographic Basins (IPABHi). All rights reserved.