977 resultados para Previsão do tempo


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The non existence of sewage services creates an unhealthy environmental, causing impact extremely prejudicial to the human health. In Brazil, this item represents the biggest deficit in the basic sanitation these days, and only about 50% of the population is attended. The sewage collection network is a needful system for the basic sanitation. Between the parameters of the project of a system of collection and sewage transportation, the definition of the population that will be attended is one of the most important variables, and that should be done based on criterion of population growth and in accordant to directrix presents in the comprehensive city plan. In this paper, were evaluated methods of growth based on the geometric growth rate, on the population density and on the number of residents per dwelling, and also mathematics models of growth prediction, emphasizing in the geometric growth and on the logistic curve method. That way, the goal of this paper were value the hydraulic performance in one of the watersheds delimited by the sewage network magnification work existent in the city of Cacoal–RO. Using simulation with different scenarios, the results pointed that the hydraulic performance of the system were strongly affected by the population determination method used. For the same drained area the diameters range from 150 to 250 mm as well as the trench’s deep, where some stretches exceeded the maximum values contained in the standard. Besides, the variation of the sewage contribution rate due the population variation estimated in different scenarios, led to alterations in others important project parameters, such as slope, shallow pool, tensile stress and spreading velocity

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This paper presents a material demand forecasting to executive aircrafts modifications, the objective was to determinate a cadence of kits of materials in order reduce over stock, but also keeping the customer quality support. This work was motivated by the strong tendency that the market has to cut costs, especially those that do not add value to the product, waste. To solve the problem the Poisson probability distribution was used and also the error measures MPE, MAPE and MSE. At the end, after some adjustments, we found a satisfactory model for the problem

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This written report narrates the process of writing the report “A caminho da cidade” (in English: “Going to the city”), submitted as Final Papers by Naomi Oliveira Corcovia, Journalism Student at UNESP. The author tries to elucidate how much the urbanization, the industrialization and other postmodern process have influenced São Paulo´s countrymen´s life and behavior. But before, the author studied the stereotype of the countrymen diffused by Media and Brazilian literature

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Measurement units are used almost automatically nowadays, but few people know the origin of the units of length (meter), mass (kilogram) and time (second). And do not care to know what were anciently units of which our ancestors used, the difficulties that existed to make a set of measures. The aim of this work is to make a historical approach, through various units of measure. They are old, unusual to others that have been forgotten since the standardization of meters, and is also discussed about the metric system Englih (Once and foot), AV system (eg pound grain) that are still used in some countries like United States and England, the Troy system consisting of units of measure for precious stones and metals (eg gold and diamond) are also cited some physical concepts as reference: inertial, non-inertial; mass: gravity, relativistic, inertial

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The work consists of the historical city of Guaratinguetá, as well as data on their quality of life, economic development and population, transportation in Brazil and the transportation system of the city serving as a basis to support the development of the urban network. The urban fabric of the city was raised with plants of the city in different years, documents obtained by the Museum and Hall of Frei Galvão Guaratinguetá well to check the form of land use and growth drivers of the city over time. We studied also the main access roads to the city by focusing on an approach that has been the subject of a proposed urban intervention. A direct interview was performed and recorded with one of those responsible for planning the urban fabric of the city in order to gather information on the historical development, the future possibilities of interventions in the urban as well as problems encountered and other curiosities. Through the study it was observed that the urban grid Guaratinguetá developing a planned since 1970 and that the highlights of most cities in the Paraíba Valley. The work is grounded in concepts of sustainable city and also in quantitative and qualitative data from sectors responsible

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The continuous advance of the Brazilian economy and increased competition in the heavy equipment market, increasingly point to the need for accurate sales forecasting processes, which allow an optimized strategic planning and therefore better overall results. In this manner, we found that the sales forecasting process deserves to be studied and understood, since it has a key role in corporate strategic planning. Accurate forecasting methods enable direction of companies to circumvent the management difficulties and the variations of finished goods inventory, which make companies more competitive. By analyzing the stages of the sales forecasting it was possible to observe that this process is methodical, bureaucratic and demands a lot of training for their managers and professionals. In this paper we applied the modeling method and the selecting process which has been done for Armstrong to select the most appropriate technique for two products of a heavy equipment industry and it has been through this method that the triple exponential smoothing technique has been chosen for both products. The results obtained by prediction with the triple exponential smoothing technique were better than forecasts prepared by the industry experts

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This paper presents an approach to time perception in the daily elementary school teachers. The research was conducted with five teachers from the public system of the Rio Claro City, São Paulo State. The methodology chosen for the preparation of the research was based on two factors: literature review and content analysis. For the literature search were used books and scientific articles, as content analysis, based on information collected from responses of teachers, research subjects, the questionnaire prepared by the researcher, also counted with the testimony in the form of narrative of these teachers (P1). In the final considerations points that all respondents have the perception of scarcity of time to carry out numerous tasks related to the practice of teaching. Also highlighted is the fact that all respondents can not separate work and personal life, as many of the jobs are taken home by integrating everyday of individual teachers, that is, their time outside the classroom

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The aim of this study was to verify through microtensile test the influence of time and concentration of surface conditioning with hydrofluoric acid and its interference in the adhesion of dual resin cement to porcelain.We used 32 bodies of glass-ceramic lithium disilicate system IPS e.max Press LT with dimensions of 6mm thick, 8 mm in length and 8 mm in length, which will be molded to obtain composite resin blocks corresponding to blocks ceramics. Ceramic and resin blocks were divided into 16 groups (n = 4) and numbered according to the concentration of hydrofluoric acid (2.5%, 5%, 7.5% and 10%) and conditioning time (20 seconds, 40 seconds, 1 minute and 2 minutes). The blocks were cleaned in ultrasonic apparatus with distilled water and dried with compressed air, subjected to acid etching and air-jet washed with water, dried with compressed air and received application of silane agent Monobond-S, followed by adhesive Excite ( Ivoclar Vivaden). Each ceramic block was bonded to the corresponding block of resin through the resin cement Multilink Automix. The specimens were cut to obtain nine micro samples for each set of ceramic-resin with 1 mm X 1 mm X 12 mm in length, which were submitted to microtensile test. The results were analyzed with descriptive statistics and analysis of variance with significance level of 5%, revealing that there were statistically significant (p = 0.000001 <0.05). From the Tukey test can be concluded that etching with hydrofluoric acid and 2.5% for 120 seconds gave the best bond strength, however, no statistical difference between the conditioning with the same acid in the concentration of 5.0% for 20 to 40 seconds

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In the current decade, inter modal transport is widely discussed. In Brazil road transport is used in excess whereas there could be more focus and investment towards water transport. Water transport presents many benefits like being low cost and low maintenance. Sea and river ports today aren't capable of supporting Brazil's transport needs. Therefore, with this obstacle, this paper consists of an attempt of modeling and simulation of the process of unloading grain cargo from trucks, through simulation with ProModel software, to verify the necessity of installing more tumblers at the cargo unloading station in Porto Murtinho, MS

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In this paper are compared two methods of deploying electrical substations, conventional type, when installed at open areas (Air Insulated Switchgear - AIS), and compact gas-insulated (Gas Insulated Switchgear - GIS) when installed inside buildings. With the expansion of urban centers, areas available for deployment of conventional substations become increasingly difficult to find in these locations. Also due to speculation in urban areas, it becomes feasible to install Gas Insulated Switchgear. This paper presents and evaluates criteria with advantages and disadvantages for application of the two methodologies, aiming to assist in decisionmaking moment of choice in deployment of Electric Power Substations in two scenarios. It is expected that at the end of this work, the criteria evaluated assist in this decision making

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Current cattlemen must seek methods to maximum reproductive efficiency of their beef herds, making the business competitive and enhancing greater profitability. For the cow-calf producers, efficiency translates into more cows producing one calf every year. Fixed-time artificial insemination (TAI) is one of several technologies that producers utilize to reach this goal. Postpartum anestrus is one of the biggest obstacles to overcome in order to obtain suitable results at the end of the breeding season. The TAI protocols are efficient in re-establishing cyclicity in noncycling cows during the postpartum period, streamlining the use of labor on farms, allowing the use of artificial insemination (AI) on a large scale, and introducing superior genetics to the herd. The protocols that are most commonly used in Brazil are based on progesterone (P4) releasing devices that prevent premature estrus and ovulation; and estradiol (E2) to synchronize the initiation of a new follicular wave. In such protocols, administration of equine chorionic gonadotropin (eCG) helps the development of the follicle, increases ovulation rate, improves the endocrine and uterine environment during proestrus and diestrus, and improves fertility. The use of eCG in TAI protocols for suckled cows, non-lactating cows and heifers increases the pregnancy rate allowing more calves at the end of the breeding season and higher profitability to the cattlemen

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The purpose of this study was to evaluate in vitro the antimicrobial activity of intracanal medications against Candida albicans, Enterococcus faecalis, Escherichia coli present in root canals. It was used 24 single root human teeths, contaminated for 28 days and prepared with physiological saline solution as irrigation solution. The teeth were divided into 2 groups according to the intracanal medication used: 1) 2% gel chlorhexidine, 2) sterile and pyrogen free physiological saline solution. Samples were taken of the root canals immediately after instrumentation, 7 days after intracanal medication and 7 days after removal of intracanal medication. For all samples the antimicrobial activity was performed by plating method. All results were submitted to Mann-Whitney and Dunn's test with significance of 5%. There was significant reduction of microorganisms after instrumentation and the intracanal medication of 2% gel chlorhexidine completely eliminated C. albicans and E. coli, and significantly reduced E. faecalis. It was concluded that 2% gel chlorhexidine as intracanal medication for 7 days was effective on microorganisms

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Induction heating is a process closely linked to the concepts of heat transfer. It also covers electromagnetic induction and effect of film. Many companies use this technology in their processes due to the high accuracy that can be obtained at temperatures induced. However the dominance of this technology is not common among Brazilian industries. This involves complex systems of equation and heat exchange in transient conduction, and convection and radiation losses. With this work we seek the ability to analyze which parameters influence over this process and the order of magnitude of time required for heating a cylindrical part