cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7515932.v1
title: The Effects of Spoilers on Jet Mixing of Lobed Nozzles

description: ABSTRACT In this study, spoilers were installed on the lobed nozzle principal model. Keeping axial position unchanged, the different widths of spoilers were mounted along the circumferential direction of a mixer tube. The effects of spoilers on the jet mixing of lobed nozzle were investigated by numerical method, and the results showed that, before or after the installation, the flow ratio did not change significantly. The value of thermal mixing efficiency and total pressure recovery coefficient had a corresponding improvement. The spoilers increased the borderline area of the primary and secondary streams, thus the mixing was accelerated. Spoilers can avoid high-temperature primary stream impinging the wall of the tube, and the temperature of mixing tube wall decreased significantly.
DOI: 10.6084/m9.figshare.11900574
title: Geochemistry water of the Camaquã das Lavras and Hilário streams, Lavras do Sul-RS: anthropogenic or natural?

description: Abstract This article presents the first detailed geochemical data of the water from Camaquã das Lavras and Hilário Streams from Lavras do Sul-RS. Geochemical and statistical analyses were used in this study to establish the anthropogenic or natural influence on the region. The results classified the waters as soft and intermediate with acidic and neutral pH. The electrical conductivity varies from 37.2 to 62.9 μs cm-1 and the total alkalinity ranges from 4 to 30 mgL-1. The distribution patterns and ratios indicate that clay mineral weathering is dominant on the investigated samples. It is followed by feldspar weathering in an environment under temporary hardness conditions. Cu, Rh, and Cd enrichment is associated with the many mineral deposits of the region, lithological diversity and human activities. All the measured values conform with the standards set by Brasil-Ordinance nos. 2914/2011, 36-GM/1990 and 1469/2000.
DOI: 10.6084/m9.figshare.11900574.v1
title: Geochemistry water of the Camaquã das Lavras and Hilário streams, Lavras do Sul-RS: anthropogenic or natural?

description: Abstract This article presents the first detailed geochemical data of the water from Camaquã das Lavras and Hilário Streams from Lavras do Sul-RS. Geochemical and statistical analyses were used in this study to establish the anthropogenic or natural influence on the region. The results classified the waters as soft and intermediate with acidic and neutral pH. The electrical conductivity varies from 37.2 to 62.9 μs cm-1 and the total alkalinity ranges from 4 to 30 mgL-1. The distribution patterns and ratios indicate that clay mineral weathering is dominant on the investigated samples. It is followed by feldspar weathering in an environment under temporary hardness conditions. Cu, Rh, and Cd enrichment is associated with the many mineral deposits of the region, lithological diversity and human activities. All the measured values conform with the standards set by Brasil-Ordinance nos. 2914/2011, 36-GM/1990 and 1469/2000.
DOI: 10.6084/m9.figshare.7514495
title: Swirl Injection Effects on Hybrid Rocket Motors

description: ABSTRACT: In the last decades, hybrid rocket engines have been increasingly studied and used in space vehicles. However, the low regression rates and specific impulses still represent major drawbacks to this technology. The objective of this study was to quantify the relative improvement of regression rate values with the use of a swirling flow injector in comparison to an axial injector. Seven tests were conducted with axial injection and seven with swirl injection. Regression rate results were compared, and it was found that swirl injection improved regression rates in 50% for mass fluxes higher than 45 kg·s-1·m-2. It was possible to see radiation, kinetic and diffusion theory on the logarithmic plot of regression rate per oxidizer flux yielded by both injectors. A strong agreement with experimental findings of regression rates in the literature parameters is reported.
DOI: 10.6084/m9.figshare.7506758
title: WEED INTERFERENCE IN EGGPLANT CROPS

description: ABSTRACT Uncontrolled weed growth interferes with the growth eggplants and crop yields. To control weeds, the main weed species must be identified in crop growing areas and during weed control periods, as weed species might vary in relation to management practices. Therefore, this study aimed to identify the main weed species and determine the periods of weed interference in the eggplant cultivar Nápoli when grown under certain cultural practices, including plant staking and sprout thinning. The experiment was carried out in 2014 using a randomized complete block design, with 3 replications. The treatments consisted of 11 periods of (1) increasing weed control and (2) increasing coexistence of eggplant with weeds from the first day of transplanting (0-14, 0-28, 0-42, 0-56, 0-70, 0-84, 0-98, 0-112, 0-126, 0-140, and up do day 154). Eggplant staking and sprout thinning were performed 42 days after transplanting (DAT). Weed identification and crop yield assessments were performed to determine the Period Before Interference (PBI), Total Period of Interference Prevention (TPIP), and the Critical Period of Interference Prevention (CPIP). The major weeds found in the eggplant cultivar Nápoli were Eleusine indica, Portulaca oleracea, and Cyperus rotundus. Coexistence between the weed community and the eggplant throughout the entire crop production cycle reduced eggplant fruit yield by 78%. The PBI was 29 DAT and the TPIP was 48 DAT, resulting in 19 days of CPIP.
DOI: 10.6084/m9.figshare.7517588
title: Comprehensiveness in the Analysis of Educational Paths

description: Abstract: Two key points structure the paper. The first one is that, in order to analyze the educational paths, they must be part of the distinct educational levels. It is necessary to have individualized and cumulative information of the outcomes in the different cycles. This way, it is possible to observe the determination exerted by the outcomes from one level on the following ones. The second key point is that the educational system is one among several scopes where the youth circulate. The educational paths suffer impact from what happens in other scopes of the individuals' lives (work, family, children etc.) and vice versa. A comprehensive look has implications for the design of educational policies, first job public programs, programs for autonomy fostering, policies of fertility etc. Empirical evidence from the Uruguayan case is shown.
DOI: 10.6084/m9.figshare.6272624
title: Correlation Between Physical Activity and Clinical Variables in Patients with Acute Myocardial Infarction

description: Abstract Background: Physical activity reduces the risk of coronary heart disease, one of the leading causes of death in the world. Objectives: This study intends to correlate physical activity and clinical variables of the patients hospitalized in public hospitals of Santa Catarina after the first acute myocardial infarction. Methods: The selected patients answered a questionnaire on different clinical variables. Physical activity was measured using the Baecke's questionnaire. Data were tabulated and analyzed using the SPSS 13.0 for Windows software. Normality was assessed using the Kolmogorov-Smirnov test. Correlations between two quantitative variables were evaluated by Pearson's correlation. Values of p &lt; 0.05 were considered statistically significant. Results: The study showed a weak positive correlation between the Baecke score and years of schooling (r = 0.361; p = 0.001). There was a weak negative correlation between the Baecke score and the PHQ9 depression score (r = -0.252; p = 0.009). The study also showed a weak negative correlation between the PHQ9 depression score and the Mini Mental score (r = -0.258; p = 0.007), as well as a weak negative correlation between PHQ9 and schooling years with (r = -0.199, p = 0.039). Conclusions: There is a positive correlation between physical activity and years of schooling in hospitalized patients with first acute myocardial infarction. Negative correlations were found between physical activity and depression, between depression and the Mini-Mental State Examination, and between depression and years of schooling in these patients.
DOI: 10.6084/m9.figshare.7244405
title: Decision support system for optimization of permits for wastewater discharge

description: ABSTRACT This paper presents a Decision Support System (DSS) to assist in the issuing of wastewater discharge and water abstraction rights, including the evaluation of alternative pollution control strategies used to facilitate the analysis and implementation of the instrument. The DSS substantiates its analysis with the use of evolutionary algorithms for the optimization of water demand and wastewater discharge allocation. It intends to maximize the uses and minimize the costs of wastewater treatment measures, according to the limits imposed by the water quality standards. Among the strategies considered for the issuing of permits were the compliance with environmental legislation for wastewater discharge, the equality between water users, the water quality standards set by the water bodies’ classification, and the restrictions imposed by the responsible controlling water agency. The DSS’s results were satisfactory to the strategies analyzed, as they complied with the restrictions and penalties imposed to the objective function. The main objective of the proposed strategies is to evaluate the performance of the DSS in getting the results, as well as to analyze the flexibility of the algorithms when new restrictions and penalties are introduced in the decision making process.
DOI: 10.6084/m9.figshare.7506758.v1
title: WEED INTERFERENCE IN EGGPLANT CROPS

description: ABSTRACT Uncontrolled weed growth interferes with the growth eggplants and crop yields. To control weeds, the main weed species must be identified in crop growing areas and during weed control periods, as weed species might vary in relation to management practices. Therefore, this study aimed to identify the main weed species and determine the periods of weed interference in the eggplant cultivar Nápoli when grown under certain cultural practices, including plant staking and sprout thinning. The experiment was carried out in 2014 using a randomized complete block design, with 3 replications. The treatments consisted of 11 periods of (1) increasing weed control and (2) increasing coexistence of eggplant with weeds from the first day of transplanting (0-14, 0-28, 0-42, 0-56, 0-70, 0-84, 0-98, 0-112, 0-126, 0-140, and up do day 154). Eggplant staking and sprout thinning were performed 42 days after transplanting (DAT). Weed identification and crop yield assessments were performed to determine the Period Before Interference (PBI), Total Period of Interference Prevention (TPIP), and the Critical Period of Interference Prevention (CPIP). The major weeds found in the eggplant cultivar Nápoli were Eleusine indica, Portulaca oleracea, and Cyperus rotundus. Coexistence between the weed community and the eggplant throughout the entire crop production cycle reduced eggplant fruit yield by 78%. The PBI was 29 DAT and the TPIP was 48 DAT, resulting in 19 days of CPIP.
DOI: 10.6084/m9.figshare.7508552
title: Evaluation of radiation protection conditions in intraoral radiology

description: Abstract Introduction: The dental radiology represents about 20% of human exposure to radiation in radio diagnostic. Although the doses practiced in intraoral dentistry are considered low, they should not be ignored due to the volume of the performed procedures. This study presents the radiation protection conditions for intraoral radiology in Curitiba - PR. Methods Data was collected through a quantitative field research of a descriptive nature during the period between September of 2013 and December of 2014. The survey sample consisted of 97 dentists and 130 intraoral equipments. The data related to the equipments was collected using structured questions and quality control evaluations. The evaluations of the entrance skin dose, the size of the radiation field and the total filtration were performed with dosimetry kits provided and evaluated by IRD/CNEN. The exposure time and voltage were measured using noninvasive detectors. The occupational dose was verified by thermoluminescent dosimeters. The existence of personal protection equipment, the type of image processing and knowledge of dentists about radiation protection were verified through the application of a questionnaire. Results Among the survey's results, it is important to emphasize that 90% of the evaluated equipments do not meet all the requirements of the Brazilian radiation protection standards. Conclusion The lack of knowledge about radiation protection, the poor operating conditions of the equipments, and the image processing through visual method are mainly responsible for the unnecessary exposure of patients to ionizing radiation.
DOI: 10.6084/m9.figshare.7508552.v1
title: Evaluation of radiation protection conditions in intraoral radiology

description: Abstract Introduction: The dental radiology represents about 20% of human exposure to radiation in radio diagnostic. Although the doses practiced in intraoral dentistry are considered low, they should not be ignored due to the volume of the performed procedures. This study presents the radiation protection conditions for intraoral radiology in Curitiba - PR. Methods Data was collected through a quantitative field research of a descriptive nature during the period between September of 2013 and December of 2014. The survey sample consisted of 97 dentists and 130 intraoral equipments. The data related to the equipments was collected using structured questions and quality control evaluations. The evaluations of the entrance skin dose, the size of the radiation field and the total filtration were performed with dosimetry kits provided and evaluated by IRD/CNEN. The exposure time and voltage were measured using noninvasive detectors. The occupational dose was verified by thermoluminescent dosimeters. The existence of personal protection equipment, the type of image processing and knowledge of dentists about radiation protection were verified through the application of a questionnaire. Results Among the survey's results, it is important to emphasize that 90% of the evaluated equipments do not meet all the requirements of the Brazilian radiation protection standards. Conclusion The lack of knowledge about radiation protection, the poor operating conditions of the equipments, and the image processing through visual method are mainly responsible for the unnecessary exposure of patients to ionizing radiation.
DOI: 10.6084/m9.figshare.7517588.v1
title: Comprehensiveness in the Analysis of Educational Paths

description: Abstract: Two key points structure the paper. The first one is that, in order to analyze the educational paths, they must be part of the distinct educational levels. It is necessary to have individualized and cumulative information of the outcomes in the different cycles. This way, it is possible to observe the determination exerted by the outcomes from one level on the following ones. The second key point is that the educational system is one among several scopes where the youth circulate. The educational paths suffer impact from what happens in other scopes of the individuals' lives (work, family, children etc.) and vice versa. A comprehensive look has implications for the design of educational policies, first job public programs, programs for autonomy fostering, policies of fertility etc. Empirical evidence from the Uruguayan case is shown.
DOI: 10.6084/m9.figshare.7244405.v1
title: Decision support system for optimization of permits for wastewater discharge

description: ABSTRACT This paper presents a Decision Support System (DSS) to assist in the issuing of wastewater discharge and water abstraction rights, including the evaluation of alternative pollution control strategies used to facilitate the analysis and implementation of the instrument. The DSS substantiates its analysis with the use of evolutionary algorithms for the optimization of water demand and wastewater discharge allocation. It intends to maximize the uses and minimize the costs of wastewater treatment measures, according to the limits imposed by the water quality standards. Among the strategies considered for the issuing of permits were the compliance with environmental legislation for wastewater discharge, the equality between water users, the water quality standards set by the water bodies’ classification, and the restrictions imposed by the responsible controlling water agency. The DSS’s results were satisfactory to the strategies analyzed, as they complied with the restrictions and penalties imposed to the objective function. The main objective of the proposed strategies is to evaluate the performance of the DSS in getting the results, as well as to analyze the flexibility of the algorithms when new restrictions and penalties are introduced in the decision making process.
DOI: 10.6084/m9.figshare.12094782.v1
title: Cardiovascular Risk Factors and Risk Measurement in Patients with Psoriatic Arthritis in a University Hospital

description: Abstract Background: Psoriatic Arthritis is the spondyloarthritis associated with psoriasis, which is often related to high mortality due to cardiovascular causes. Objectives: To quantify cardiovascular risk factors (hypertension, diabetes, dyslipidemia, obesity and smoking) and to measure risk by the Global Cardiovascular Risk Score in patients with psoriatic arthritis. Methods: Patients with psoriatic arthritis according to the Classification Criteria for Psoriatic Arthritis, aged between 30 and 74 years and without any other clinically manifest chronic inflammatory disease, atherosclerotic disease or heart failure were included. After an interview, clinical examination and data extraction from medical records, risk stratification was performed using a calculator available on the online platform of the Framingham Heart Study. We considered p &lt; 0.05 as significant. Chi-square test and Fisher’s exact test were used to compare frequencies, as well as correlation measurements. Results: 45 patients were included, 68,9% of which were women and the mean age was 53,94 years. Dyslipidemia was confirmed in approximately 93%, hypertension in 46%, obesity in 40%, 33.3% were diabetics and, 13.3%, smokers; 95% had increased abdominal circumference. It was observed that 53% had high cardiovascular risk, 29% had intermediate risk and 18% had low risk. Individuals with altered C-reactive protein and erythrocyte sedimentation rate presented, respectively, higher levels of LDL-C and total cholesterol. Conclusions: There was a high occurrence of risk factors and the majority of the sample was stratified into high or intermediate cardiovascular risk.
DOI: 10.6084/m9.figshare.6272624.v1
title: Correlation Between Physical Activity and Clinical Variables in Patients with Acute Myocardial Infarction

description: Abstract Background: Physical activity reduces the risk of coronary heart disease, one of the leading causes of death in the world. Objectives: This study intends to correlate physical activity and clinical variables of the patients hospitalized in public hospitals of Santa Catarina after the first acute myocardial infarction. Methods: The selected patients answered a questionnaire on different clinical variables. Physical activity was measured using the Baecke's questionnaire. Data were tabulated and analyzed using the SPSS 13.0 for Windows software. Normality was assessed using the Kolmogorov-Smirnov test. Correlations between two quantitative variables were evaluated by Pearson's correlation. Values of p &lt; 0.05 were considered statistically significant. Results: The study showed a weak positive correlation between the Baecke score and years of schooling (r = 0.361; p = 0.001). There was a weak negative correlation between the Baecke score and the PHQ9 depression score (r = -0.252; p = 0.009). The study also showed a weak negative correlation between the PHQ9 depression score and the Mini Mental score (r = -0.258; p = 0.007), as well as a weak negative correlation between PHQ9 and schooling years with (r = -0.199, p = 0.039). Conclusions: There is a positive correlation between physical activity and years of schooling in hospitalized patients with first acute myocardial infarction. Negative correlations were found between physical activity and depression, between depression and the Mini-Mental State Examination, and between depression and years of schooling in these patients.
DOI: 10.6084/m9.figshare.6272636.v1
title: Comparison of Anatomical and Clinical Scores in Predicting Outcomes in Primary Percutaneous Coronary Intervention

description: Abstract Background: Different scores based on anatomical and/or clinical features have been developed for risk stratification of patients undergoing percutaneous coronary intervention (PCI). Studies comparing the ability of these different models in predicting major adverse cardiac and cerebrovascular events (MACCE) in patients submitted to primary PCI are limited. Objectives: The aim of this study was to compare the ability of the scores SYNTAX (SS), Clinical SYNTAX (CSS), ACEF, and modified ACEF (ACEFMod) to predict MACCE in patients with ST-elevation myocardial infarction (STEMI) submitted to primary PCI. Methods: We analyzed 311 consecutive patients with STEMI submitted to primary PCI between April/2011 and December/2015. The area under the ROC curve was calculated to evaluate the ability of these scores in predicting MACCE. P-values were considered significant at &lt; 0.05. Results: Mean age of the patients was 60.2 ± 12.0 years, 35.4% were females, and 22.5% had diabetes. MACCE occurred in 23.8% of the patients. The area under the ROC curve was 0.586 (p = 0.028) for ACEF, 0.616 (p = 0.003) for SS, 0.623 (p = 0.002) for ACEFMod, and 0.658 (p &lt; 0.001) for CSS. In multivariate analysis, only high SS (p = 0.011) and CSS (p = 0.002) were independent predictors of MACCE. Conclusions: High SS and CSS were independent predictors of MACCE. In our cohort of STEMI patients undergoing primary PCI, pure anatomical SS calculated at the baseline coronary angiography was a useful tool to predict MACCE. (Int J Cardiovasc Sci. 2017; [online].ahead print, PP.0-0)