Utilização da impressão 3D no desenvolvimento de encaixe para mesa de home oficce

PCC(graduação) - Universidade Federal de Santa Catarina. Centro de Comunicação e Expressão. Design.O presente projeto de conclusão de curso apresenta o desenvolvimento de uma estação de trabalho para home office que utiliza a impressão 3D para criar elementos com o princípio de facilitar sua montagem. O intuito é mostrar as vantagens e como a tecnologia de impressão 3D pode ser inserida no cotidiano das pessoas de forma útil.This course completion project presents the development of a workstation for home office using 3D printing to create elements with the principle of facilitating their assembly. The aim is to show the advantages and how 3D printing technology can be inserted into the daily lives of people in a useful way

Exportações do Rio Grande do Norte: estrutura, vantagens comparativas e comércio intra-indústrial

The objective of the present paper is to examine the behavior and the structure of the export sector of the economy of Rio Grande do Norte from 1996 to 2006, and to identify the products of revealed comparative advantage. The paper also seeks to measure levels of export concentration of products and destination markets, types of trade, and export sectors that show strength. To achieve the objectives of the paper, the intra-industry indices of GRUBEL AND LLOYD (1975) and the indices of revealed comparative advantage of BALASSA (1965) e LAURSEN (1998) were used. The indexes of product concentration and export destination were obtained through the Gini-Hirchmna coefficient. The data was taken from the ALICEWEB system of the Ministry of Development, Industry and Trade – MDIC. The results revealed a high concentration of few primary products and destination markets, along with weak participation in the export of manufactured products. The study points out that the international trade of the State of Rio Grande do Norte is basically inter-industrial; that is, it exports primary products and imports manufactured products, characteristic of the Herckscher-Ohlin trade type. Among the group of products with intraindustrial trade, the cotton group stands out, showing the importance of the textile sector in the state’s economy.Revealed Comparative Advantage, Intra-Industry Trade, Export Concentration., Agribusiness, F100, F110, F140.,

Micronutrient nutrition in sugarcane: a brief review

Sugarcane has economic value worldwide, being used in the production of sugar, electricity and alcohol. Therefore, the objective was to demonstrate the research carried out in recent years on the main micronutrients and their respective effects on the development and yield of sugarcane. Micronutrient deficiency is one of the factors that limit the productivity of this crop in producing regions, and this deficit is related to several aspects, such as the use of fertilizers with low levels of micronutrients, increased agricultural productivity, decreased levels of organic matter in the soil. Thus, it is noteworthy that the proper management can circumvent the limiting factors, since the application of boron via the leaves results in a greater ton of stalks, and in relation to zinc, applied via the soil, it is also beneficial to the production of stalks. Molybdenum increases biological nitrogen fixation in sugarcane and contributes to the accumulation of N in the plant. Iron and manganese are both involved in the chlorophyll content and dry matter accumulation of sugarcane. The study exposes the contributions of fertilization with microelements for the development of the sugarcane sector. From this perspective, more research is needed on the fertilization of micronutrients to boost sugarcane productivity under different edaphoclimatic conditions.Sugarcane is a crop of worldwide economic value used in sugar, electricity, and alcohol production. This review demonstrates the importance of the main micronutrients and their respective effects on the development and yield of sugarcane. Micronutrient deficiency is one of the limiting factors in sugarcane productivity in producing regions. This deficit is related to several aspects, such as fertilizer use with low micronutrient levels, increased agricultural productivity, and decreased productivity levels of soil organic matter. Thus, proper fertilization management can circumvent the limiting factors such as the foliar application of boron and soil fertilization of zinc, both resulting in greater stem production. Molybdenum increases biological nitrogen fixation in sugarcane and contributes to the accumulation of N in the plant. Iron and manganese are involved in chlorophyll content and dry matter accumulation in sugarcane. In this review, we show the contributions of fertilization with microelements to the development of the sugarcane sector. In this perspective, more research is needed on micronutrient fertilization to increase sugarcane productivity in different soil and climate conditions

New records of Helicina schereri (Gastropoda: Helicinidae) from the states of Bahia, Minas Gerais, and Mato Grosso do Sul, Brazil

New records for Helicina schereri Baker, 1913, are reported. It was a species previously restricted to the states of Ceará, Rio Grande do Norte, Paraíba, Alagoas and Tocantins in Northeastern Brazil, and State of Santa Catarina, much further south. The new occurrences reported herein fill distribution gaps and also significantly expand the range of the species ca. 970 km westwards. The new records are from the following locations: Bahia State (Ituaçu and Itaquara municipalities) in Northeast Brazil; Mato Grosso do Sul State (Bonito Municipality) in the Midwest; and Minas Gerais (Lagoa Santa municipality) in the Southeast

New records of Helicina schereri (Gastropoda: Helicinidae) from the states of Bahia, Minas Gerais, and Mato Grosso do Sul, Brazil

New records for Helicina schereri Baker, 1913, are reported. It was a species previously restricted to the states of Ceará, Rio Grande do Norte, Paraíba, Alagoas and Tocantins in Northeastern Brazil, and State of Santa Catarina, much further south. The new occurrences reported herein fill distribution gaps and also significantly expand the range of the species ca. 970 km westwards. The new records are from the following locations: Bahia State (Ituaçu and Itaquara municipalities) in Northeast Brazil; Mato Grosso do Sul State (Bonito Municipality) in the Midwest; and Minas Gerais (Lagoa Santa municipality) in the Southeast

Hematócrito baixo compromete a remoção de CO2 da mucosa gástrica na hemodiluição normovolêmica intensa experimental

OBJECTIVE: The net effects of acute normovolemic hemodilution with different hemoglobin levels on splanchnic perfusion have not been elucidated. The hypothesis that during moderate and severe normovolemic hemodilution, systemic and splanchnic hemodynamic parameters, oxygen-derived variables, and biochemical markers of anaerobic metabolism do not reflect the adequacy of gastric mucosa, was tested in this study. METHODS: Twenty one anesthetized mongrel dogs (16 ± 1 kg) were randomized to controls (CT, n = 7, no hemodilution), moderate hemodilution (hematocrit 2 5% ± 3%, n = 7) or severe hemodilution (severe hemodilution, hematocrit 15% ± 3%, n = 7), through an isovolemic exchange of whole blood and 6% hydroxyethyl starch, at a 20 mL/min rate, to the target hematocrit. The animals were followed for 120 min after hemodilution. Cardiac output (CO, L/min), portal vein blood flow (PVF, mL/min), portal vein-arterial and gastric mucosa-arterial CO2 gradients (PV-artCO2 and PCO2 gap, mm Hg, respectively) were measured throughout the experiment. RESULTS: Exchange blood volumes were 33.9 ± 3.3 and 61.5 ± 5.8 mL/kg for moderate hemodilution and severe hemodilution, respectively. Arterial pressure and systemic and regional lactate levels remained stable in all groups. There were initial increases in cardiac output and portal vein blood flow in both moderate hemodilution and severe hemodilution; systemic and regional oxygen consumption remained stable largely due to increases in oxygen extraction rate. There was a significant increase in the PCO2-gap value only in severe hemodilution animals. CONCLUSION: Global and regional hemodynamic stability were maintained after moderate and severe hemodilution. However, a very low hematocrit induced gastric mucosal acidosis, suggesting that gastric mucosal CO2 monitoring may be useful during major surgery or following trauma.OBJETIVO: Os efeitos da hemodiluição normovolêmica com diferentes níveis de hemoglobina na perfusão esplâncnica são pouco conhecidos. Testamos a hipótese que durante a hemodiluição moderada e acentuada, os parâmetros hemodinâmicos sistêmicos e regionais e as variáveis relacionadas ao metabolismo de oxigênio não refletem a adequação da perfusão da mucosa gástrica. MÉTODOS: Vinte e um cães anestesiados com fentanil e vecurônio (16±1 kg) foram randomizados como controles (CT, n=7, sem hemodiluição normovolêmica), hemodiluição normovolêmica moderada (Ht 25±3%, n=7) ou hemodiluição normovolêmica acentuada (Ht 15±3%, n=7), pela troca isovolêmica entre o sangue total e hidroxietil amido a 6%, 20 mL/min até o hematócrito pré-estabelecido para cada grupo. Os animais foram acompanhados por 120 min após a hemodiluição normovolêmica. Durante todo o experimento foram medidos o débito cardíaco (CO, L/min), o fluxo de veia porta (PVF, mL/min), e os gradientes de CO2 veia porta-arterial e mucosa gástrica-arterial (PV-artCO2 and PCO2-gap, mmHg, respectivamente). RESULTADOS: O volume de sangue trocado foi de 33,9±3,3 mL/kg para hemodiluição normovolêmica moderada e de 61,5±5,8 mL/kg para a hemodiluição normovolêmica acentuada. A pressão arterial e os níveis de lactato sistêmico e regional permaneceram estáveis em todos os grupos. Houve aumentos iniciais de débito cardíaco e de fluxo de veia porta, tanto na hemodiluição normovolêmica moderada quanto na hemodiluição normovolêmica acentuada; o consumo de oxigênio sistêmico e regional permaneceram estáveis, principalmente por conta de aumentos na taxa de extração de oxigênio. O PCO2-gap apresentou aumento significativo apenas nos animais submetidos a hemodiluição normovolêmica acentuada. CONCLUSÃO: Ocorre estabilidade hemodinâmica global e regional tanto na hemodiluição normovolêmica moderada quanto na acentuada. Entretanto, o hematócrito de 15% induziu acidose moderada de mucosa gástrica, o que pode ser relevante em procedimentos cirúrgicos de grande porte ou no trauma

Saussure e o Estudo das Vogais Indoeuropeias

O trabalho de Ferdinand de Saussure no Memorial sobre o Sistema Primitivo de Vogais nas Línguas Indo-Europeias é sua obra de mestrado, a qual foi publicada em 1878 quando o estudioso tinha 21 anos. No estudo, ele propôs a reconstrução de um estado arcaico do sistema vocálico do indo-europeu, antes da dispersão das línguas. Saussure introduziu elementos diacrônicos no cerne de sua reconstrução, de modo que ele procede mais especificamente a uma série de estados, sem pesquisar datas absolutas, nem mesmo a sistematização destes estados (o que seriam estágios do proto-indo-europeu), o que ele chama de "período europeu", época em que os povos europeus falavam a mesma língua. Ele distinguiu subconjuntos que compartilham uma característica em particular, porém se abstém de quaisquer suposições sobre o mapa de migração da época. A noção de sistema é inseparável da dimensão diacrônica do fenômeno, da mesma maneira que a explicação não se baseia em uma série de correspondências entre o proto-indo-europeu e línguas indo-europeias oficiais, mas dentro do proto-indo-europeu, com a definição do vocalismo como estrutura, com um sistema correspondente nos diferentes grupos que são advindos de uma série de bifurcações: línguas asiáticas (ou arianas), divididas em sânscrito e iraniano antigo x línguas europeias; grupo de línguas europeias do norte (germânico, eslavo, báltico e céltico) x grupo das línguas europeias do sul (grego, latim e armênio). Saussure não construíra apenas um sistema, mas pelo menos quatro: proto-indo-europeu, idiomas asiáticos, grupo das línguas europeias do norte e o grupo das línguas europeias do sul. Assim, encontramos, em fragmentos, partes importantes do sistema de línguas específicas. No estudo, não houve preocupação com a mudança como um processo, mas como resultado das mudanças, a correspondência não é uma língua, mas três grupos linguísticos. Ele nunca emitiu nenhum argumento, no máximo, probabilidades de verificação e semelhanças. Apenas a correspondência entre os sistemas em equilíbrio que o permite conjecturar sobre a antiguidade ou atualidade de oposições e não das formas. Saussure observa ainda que ao aproximar os sistemas fonológicos europeus, arianos, europeus do sul e do norte, grego e latim (em cada caso, a determinação não é realizada pela análise de uma língua, mas pela diferença entre dois idiomas ou grupos linguísticos), ele descobriu um conjunto de diferenças que são explicadas apenas pela presença, no proto-indo-europeu, de uma distinção presente no sistema antes de qualquer discrepância entre línguas. É necessário ressaltar que o objetivo principal do Memorial são as múltiplas manifestações da vogal “a” indo-europeia, e que as outras vogais foram analisadas apenas quando elas estavam ligadas aos fenômenos relativos ao “a” indo-europeu

Exogenous Fibrolytic Enzymes and Length of Storage Affect the Nutritive Value and Fermentation Profile of Maize Silage

The addition of exogenous fibrolytic enzymes (EFEs) and length of storage can affect the quality of maize silage. Therefore, the objective of this study was to evaluate the fermentative profile and the nutritive value of maize silage treated with different doses of EFEs ensiled for 30, 60, or 90 days. The study was designed as completely randomized in a split-plot arrangement of treatments, where four doses of EFEs were assigned to the main plot and three lengths of storage to the sub-plot, with four replicates per treatment. Treatments were: Control, E100 (EFEs at 100 g/ton dry matter (DM)), E150 (EFEs at 150 g/ton DM) and E200 (EFEs at 200 g/ton DM). The EFE treatment did not increase the digestibility of nutrients but increased the acetic acid concentration (1.87 vs. 1.18% DM), while decreasing the content of ethanol (0.02 vs. 0.08% DM), ethyl lactate (7.50 vs. 15.9 mg/DM) and ethyl acetate (5.58 vs. 10.6 mg/DM). Prolonged storage increased DM losses (7.05 vs. 2.32%) and acetic acid content (2.19 vs. 1.03% DM), but decreased ethanol concentration (0.02 vs. 0.09% DM). In conclusion, the addition of EFEs in maize silages did not affect nutrient digestibility and DM losses during fermentation, but it slightly decreased the concentrations of ethanol and esters and increased the acetic acid content. Although statistically significant, such differences may not be relevant biologically, due to the relatively low concentrations of ethanol and esters in all treatments

Identification And Agreement Of First Turn Point By Mathematical Analysis Applied To Heart Rate, Carbon Dioxide Output And Electromyography.

The second heart rate (HR) turn point has been extensively studied, however there are few studies determining the first HR turn point. Also, the use of mathematical and statistical models for determining changes in dynamic characteristics of physiological variables during an incremental cardiopulmonary test has been suggested. To determine the first turn point by analysis of HR, surface electromyography (sEMG), and carbon dioxide output (VCO2) using two mathematical models and to compare the results to those of the visual method. Ten sedentary middle-aged men (53.9 ± 3.2 years old) were submitted to cardiopulmonary exercise testing on an electromagnetic cycle ergometer until exhaustion. Ventilatory variables, HR, and sEMG of the vastus lateralis were obtained in real time. Three methods were used to determine the first turn point: 1) visual analysis based on loss of parallelism between VCO2 and oxygen uptake (VO2); 2) the linear-linear model, based on fitting the curves to the set of VCO2 data (Lin-LinVCO2); 3) a bi-segmental linear regression of Hinkley's algorithm applied to HR (HMM-HR), VCO2 (HMM-VCO2), and sEMG data (HMM-RMS). There were no differences between workload, HR, and ventilatory variable values at the first ventilatory turn point as determined by the five studied parameters (p>0.05). The Bland-Altman plot showed an even distribution of the visual analysis method with Lin-LinVCO2, HMM-HR, HMM-VCO2, and HMM-RMS. The proposed mathematical models were effective in determining the first turn point since they detected the linear pattern change and the deflection point of VCO2, HR responses, and sEMG.17614-2

Treatment of water containing methylene by biosorption using Brazilian berry seeds (Eugenia uniflora)

Brazilian berry seeds (Eugenia uniflora) were used as an eco-friendly and low-cost biosorbent for the treatment of textile effluents containing methylene blue. Characterization techniques indicated that Brazilian berry seeds are constituted of irregular particles, mainly composed of lignin and holocellulose groups, distributed in an amorphous structure. Methylene blue biosorption was favorable at pH of 8, using a biosorbent dosage of 0.8 g L−1. The equilibrium was reached in the first 20 min for lower M methylene blue concentrations and 120 min for higher methylene blue concentrations. Furthermore, the general and pseudo-second-order models were suitable for describing the kinetic data. Langmuir was the most adequate model for describing the isotherm curves, predicting a biosorption capacity of 189.6 mg g−1 at 328 K. Biosorption was spontaneous (− 9.54 ≤ ΔG0 ≤ −8.06 kJ mol−1) and endothermic, with standard enthalpy change of 6.11 kJ mol−1. Brazilian berry seeds were successfully used to remove the color of two different simulated textile effluents, achieving 92.2% and 73.5% of removal. Last, the fixed-bed experiment showed that a column packed with Brazilian berry seeds can operate during 840 min, attaining biosorption capacity of 88.7 mg g−1. The data here presented indicates that textile effluents containing methylene blue can be easily and successfully treated by an eco-friendly and low-cost biosorbent like Brazilian berry seeds