377 research outputs found

    Implementation of 288 KWP Photovoltaic Solar System On-Grid in a Manaus Industrial Polo Company

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    The rational use of electricity is practically mandatory, due to the current moment in which the country crosses, mainly due to the reduced reservoir levels of the hydroelectric plants, and where there are high costs in the production of its fuel inputs. fossil fuels, and recent tariff adjustments that the government has been approving year after year, making conventional energy increasingly expensive in the country. Companies and households focus on looking for ways to dodge electricity inflation through clean and renewable energy sources, as is the case here, of photovoltaic solar energy. Aiming to supply about 70% of the electricity bill of a Company of the Manaus-AM Industrial Pole, this work proposes a 288 KWp photovoltaic solar system, consisting of 900 330 W photovoltaic panels, accompanied by 10 Inverters. 30 KW each, connected to the Amazonas Energia Distribution Network, featuring an On-grid solar system, and becoming the largest executed solar energy project in the Amazon and Northern Brazil. The implementation of the system seeks to make feasible and solve the high cost of the electric bill with the application of a solar system, and analyze its investment, financial return and clean energy generation for the next 25 years

    Prototype Development Open Source Platform-Based Electricity Meter with Minimum Rate of Change According to Module Five of the Electricity Distribution Procedure in the Brazilian National Electrical System (PRODIST)

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    The article proposes the development of a low-cost, well-performing open source residential energy consumption demand meter compared to commercial meters in order to achieve accurate results and remain within the limits determined by technical standards, with the objective of measuring real and instant energy consumption through microcontroller and current sensor. The prototype has the ability to provide energy consumption data for a low voltage residential load or wiring to obtain the final amount of energy consumption Data is collected in stages by collecting current and voltage,  the microcontroller receives analog stimuli from sensors, as voltage and current samples are processed to calculate power, current and voltage. The use of the device leads the consumer to clarify the instantaneous energy consumption per installed component and it is possible to compare the cost benefit in relation to the energy consumption, providing consumers the follow up and a detailed view of its consumption, leading to efficient and sustainable use, enabling the improvement of the quality of energy supply to equipment connected to the distribution system

    Implementation of the TN-C-S Scheme in an Ungrounded Low Voltage Electrical Installation in Manaus / AM

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    This paper is intended to formulate a hypothesis for the implementation of a grounding system in a low voltage electrical installation in the city of Manaus. According to ABRACOPEL and PROCOBRE 48% of Brazilian properties do not have a protection conductor and according to NBR 5410 and NBR 5419 the grounding system is of crucial importance, both for the protection of the building, as well as the human being; Inserted in this context, the present article seeks to report a method applied by the author for the implementation of a reliable grounding system that fits the Manaus Electric Power System

    PDCA Cycle Application in Management of Industrial Processes in a Manaus Industrial Pole Factory

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    This study aimed to study and monitor the implementation of the PDCA method. (Plan, Do, Check, Action) Through action research. It was found that achieving the best results required the use of Quality Tools (Ishikawa Diagram, 5W and 2H, Brainstorning, 5S) providing more accurate data for better decision making. The study had bibliographic research and data comparison, providing references to diagnose the root of the problem presented in the production process related to the aesthetic quality of the finished product (Lithium Ion battery for mobile). Using the 5S program to implement and guide employees in new work habits, ensuring product and process quality, avoiding waste and enabling continuous improvement

    Vidas na escuridão

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    Monografia (graduação)—Universidade de Brasília, Faculdade de Comunicação, Departamento de Jornalismo, 2013.O presente projeto experimental é uma grande reportagem, em formato de revista, composta por uma matéria introdutória e quatro outras retrancas que detalham a vida dos brasileiros que vivem sem energia elétrica. Os textos trazem dados aliados a histórias humanas. A intenção é mostrar, por meio de entrevistas feitas no interior do Piauí, um dos estados apontados como em situação mais extrema no país quando o assunto é falha na distribuição energética, como vivem cerca de 3,3 milhões de pessoas que ainda não têm acesso ao serviço. A reportagem é acompanhada por um memorial que discorre sobre o processo de produção, apuração, a viagem ao Piauí e a redação do texto, além de trazer as justificativas das decisões tomadas como, por exemplo, o porquê da escolha da grande reportagem ou os motivos que nos levaram a não utilizar, na matéria, a primeira pessoa

    Factory Location Decision Making Based on the FUZZY Inference Model

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    This paper introduces the concept of fuzzy logic, some terms used in this kind of logic, and uses it to evaluate and choose where to deploy factories and other enterprises. In addition, a model is made using the InFuzzy program to evaluate a choice of a location within the Manaus Industrial Pole - PIM, using objective and subjective criteria within the fuzzy logic. This article aims to present the fuzzy logic in the context of production engineering, select the parameters that define the best location, develop models that represent the subject in the study and verify the applicability by simulating other case studies and comparing results

    Inhale, exhale: Why particulate matter exposure in animal models are so acute? Data and facts behind the history

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    We present a dataset obtained by extracting information from an extensive literature search of toxicological experiments using mice and rat animal models to study the effects of exposure to airborne particulate matter (PM). Our dataset covers results reported from 75 research articles considering paper published in 2017 and seminal papers from previous years. The compiled data and normalization were processed with an equation based on a PM dosimetry model. This equation allows the comparison of different toxicological experiments using instillation and inhalation as PM exposure protocols with respect to inhalation rates, concentrations and PM exposure doses of the toxicological experiments performed by different protocols using instillation and inhalation PM as exposure methods. This data complements the discussions and interpretations presented in the research article "Inhale, exhale: why particulate matter exposure in animal models are so acute?" Curbani et al., 2019Instituto Capixaba de Ciências e Administração | Ref. 007/201

    Calcium Pre-Rinse : effect on permeability of dentin tubules by fluoride rinse

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    The aim of this study was to evaluate whether calcium (CaL) solution would enhance the capacity of sodium fluoride (NaF) solution in reducing the permeability of hypersensitive dentin. Thirty-two Wistar rats ingested for 45 days acidic isotonic drink (Gatorade, pH 2.7) ad libitum to induce dental erosion. Then, molar teeth received a cold stimulus to confirm the presence and score the intensity of dentin hypersensitivity based on body contraction and noise. Animals were allocated to four groups (n=8), according to the solution(s) applied in the oral cavity: NaF (12 mmol/L, 1 min); CaL (150 mmol/L, 1 min); CaL followed by NaF (CaF+NaF, 1 min each); distilled water (DW, 1 min, as negative control). The animals were euthanized and the mandibles dissected into hemimandibles, which were sealed with sticky wax, except for the occlusal surface of the molar teeth. The samples were immersed in 10% copper sulphate solution and in 1% dithioxamide alcoholic solution (25 min each). The samples were sectioned longitudinally and imaged under optical microscope. Then, dentin permeability was measured as the area of copper ion penetration, using ImageJ software. Photomicrographs were obtained by scanning electron microscopy. 68.7% of animals had body contraction associated or not with noise. One-way ANOVA followed by Tukey´s test indicated that groups treated with NaF solution, whether or not preceded by CaL solution, presented lower permeability than the remaining groups [CaL+NaF: 3405.7 ?m2 (±1796.4); NaF: 4111.7 ?m2 (±2450.6); CaL: 42254.6 ?m2 (±30399.2); DW: 37064.6 ?m2 (±21994.4)]. Photomicrographs showed that CaL+NaF group presented an increased proportion of occluded dentin tubules in comparison to the NaF-only group. Although qualitatively there seems to be a benefit in using CaL pre-rinse, this solution did not quantitatively enhance the capacity of NaF in reducing permeability of hypersensitive dentin
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