cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7515557.v1
title: Continuous subcutaneous insulin infusion: national and international scenario

description: Abstract Introduction The Continuous Subcutaneous Insulin Infusion pump system (CSII) is an alternative to multiple daily administration of insulin in diabetic patients. Although it has many advantages, its availability in the public health system is still very low. This study aimed to identify practices and experiences of health departments and organizations on the use of CSII. Method Questionnaires were applied to Brazilian Health Departments of the States (SES) and international organizations for health technologies evaluation. Results Most of the SES (83%) have received lawsuits and the use of CSII has increased in the last 5 years. International organizations reported that in 47% of countries, the CSII is available to patients through the public health system. Conclusion The use of CSII brings several benefits, but also a high annual additional cost of approximately R$ 9,500 per patient. Therefore, there is an evident need to conduct studies assessing the incorporation of CSII, its budgetary impact in the Brazilian health system, and the definition of which circumstances this will be made available to the population.
DOI: 10.6084/m9.figshare.8127929
title: Soil Organic Matter Fractions Under Eucalypt Plantation in Reform Management

description: ABSTRACT Harvesting and reform in eucalyptus can lead to changes in soil organic matter (SOM). The objective of this work was to evaluate the changes in total organic C (TOC) and N (NT), C and N in humic acid (HA), fulvic acid (FH), light organic matter (LOM) and microbial biomass (MB), in Ultisol of eucalypt stands over one, two and four years of renovated areas in Rio Grande do Sul state. After the first year of eucalyptus reform, there were 78% of increases in TOC (0.0-1.0-m soil layer). After two years, there was an increase in TN and an average reduction of 52% in LOM-C (0.0-0.1-m soil layer). FA-C, HA-C, and HU-C presented mean reductions of 43 Mg ha–1 (0.0-1.0-m soil layer) after four years of reform. The litter contribution of previous crop and the crop residues from the harvest resulted in increments of the SOM fractions. However, there is a negative effect in later years.
DOI: 10.6084/m9.figshare.8127929.v1
title: Soil Organic Matter Fractions Under Eucalypt Plantation in Reform Management

description: ABSTRACT Harvesting and reform in eucalyptus can lead to changes in soil organic matter (SOM). The objective of this work was to evaluate the changes in total organic C (TOC) and N (NT), C and N in humic acid (HA), fulvic acid (FH), light organic matter (LOM) and microbial biomass (MB), in Ultisol of eucalypt stands over one, two and four years of renovated areas in Rio Grande do Sul state. After the first year of eucalyptus reform, there were 78% of increases in TOC (0.0-1.0-m soil layer). After two years, there was an increase in TN and an average reduction of 52% in LOM-C (0.0-0.1-m soil layer). FA-C, HA-C, and HU-C presented mean reductions of 43 Mg ha–1 (0.0-1.0-m soil layer) after four years of reform. The litter contribution of previous crop and the crop residues from the harvest resulted in increments of the SOM fractions. However, there is a negative effect in later years.
DOI: 10.6084/m9.figshare.7419512
title: ENEM: propulsion to the Brazilian educational market in the 21st century

description: Abstract: The external evaluation gained prominence in the educational scenario since 1990 and became an instrument for induction and control of the operationalization of educational reforms. In this process, the Brazilian State assumes the role of formulator, regulator and evaluator of results. The National High School Examination (ENEM) created and reformulated in this context, gains progressive scope and becomes more widespread. With Law No. 13,415/2017, which reforms high school and with the help of the National Curricular Common Base, it expands its implications to basic and higher education. Based on a documentary study, the article characterizes and analyzes the ENEM, the role it plays and its relation with the consolidation of the educational market in Brazil.
DOI: 10.6084/m9.figshare.7509731
title: Neurodegeneration with brain iron accumulation: A case report

description: ABSTRACT Pantothenate kinase-associated neurodegeneration (PKAN) is an autosomal recessive disorder caused by mutation in the PANK2 gene. It is characterized by abnormal brain iron accumulation, mainly in the globus pallidus. PKAN is included in a group of disorders known as neurodegeneration with brain iron accumulation (NBIA). We report a case of atypical PKAN with its most characteristic presentation, exhibiting marked psychiatric symptoms, speech disorder and focal dystonia. Brain MRI has great diagnostic importance in this group of disorders and, in this case, disclosed the eye-of-the-tiger sign. Genetic testing confirmed the diagnosis.
DOI: 10.6084/m9.figshare.7509731.v1
title: Neurodegeneration with brain iron accumulation: A case report

description: ABSTRACT Pantothenate kinase-associated neurodegeneration (PKAN) is an autosomal recessive disorder caused by mutation in the PANK2 gene. It is characterized by abnormal brain iron accumulation, mainly in the globus pallidus. PKAN is included in a group of disorders known as neurodegeneration with brain iron accumulation (NBIA). We report a case of atypical PKAN with its most characteristic presentation, exhibiting marked psychiatric symptoms, speech disorder and focal dystonia. Brain MRI has great diagnostic importance in this group of disorders and, in this case, disclosed the eye-of-the-tiger sign. Genetic testing confirmed the diagnosis.
DOI: 10.6084/m9.figshare.7419512.v1
title: ENEM: propulsion to the Brazilian educational market in the 21st century

description: Abstract: The external evaluation gained prominence in the educational scenario since 1990 and became an instrument for induction and control of the operationalization of educational reforms. In this process, the Brazilian State assumes the role of formulator, regulator and evaluator of results. The National High School Examination (ENEM) created and reformulated in this context, gains progressive scope and becomes more widespread. With Law No. 13,415/2017, which reforms high school and with the help of the National Curricular Common Base, it expands its implications to basic and higher education. Based on a documentary study, the article characterizes and analyzes the ENEM, the role it plays and its relation with the consolidation of the educational market in Brazil.
DOI: 10.6084/m9.figshare.7511165
title: Evaluation of the oil flow using the MQL technique applied in the cylindrical plunge grinding of AISI 4340 steel with cbn grinding wheel

description: Abstract The grinding process is defined as an abrasive cutting action of a tool known as grinding wheel, which is submitted to high rotations, promoting excellent finishing and accuracy in dimensions, respecting the parameters established in each project. During the machining, the cutting edges of the abrasive grains undergo wearing and this increases the contact surface of the tool with the workpiece, increasing the machining temperature and creating possibilities of damaging it. Therefore, it is necessary to use a cutting fluid, responsible for lubricating and cooling the cutting zone, removing the chips from the cutting region between the workpiece and the wheel, and even having an anticorrosive action. However, its composition causes contamination to the environment and to the operator. In face of the increasingly strict environmental laws, it has become necessary to search for new methods of cooling that are at least as effective as conventional one and economically practicable. Thus, the Minimum Quantity of Lubrication was developed as a mist of air and oil applied at high pressure, reducing drastically the use of contaminants. In this work, two oil flows were used for the MQL technique, 30 ml/h and 120 ml/h. The wheel used was a CBN (Boron Cubic Nitride) one, composed of synthetic grains and the workpiece, in a ring format, were produced in AISI 4340 steel quenched and tempered. It was observed from results that MQL can be applied in the industrial processes without losing piece quality.
DOI: 10.6084/m9.figshare.7517399
title: Combinatorial Analysis: from random method to systematic combinatorics

description: This research seeks to understand the psychogenesis of the combinatorial thought from the perspective of the genetic epistemology of Jean Piaget. It analyzes the mechanisms used by high school students in solving combinatorial analysis of experimental situations in order to understand how this notion is built by them. The thought of the subjects is analyzed emphasizing their similarities, as reasoning structures, when building possibilities. We believe that some school methods can hinder the construction of the formal reasoning, explaining the difficulties of young people in understanding combinatorial mechanisms.
DOI: 10.6084/m9.figshare.7511165.v1
title: Evaluation of the oil flow using the MQL technique applied in the cylindrical plunge grinding of AISI 4340 steel with cbn grinding wheel

description: Abstract The grinding process is defined as an abrasive cutting action of a tool known as grinding wheel, which is submitted to high rotations, promoting excellent finishing and accuracy in dimensions, respecting the parameters established in each project. During the machining, the cutting edges of the abrasive grains undergo wearing and this increases the contact surface of the tool with the workpiece, increasing the machining temperature and creating possibilities of damaging it. Therefore, it is necessary to use a cutting fluid, responsible for lubricating and cooling the cutting zone, removing the chips from the cutting region between the workpiece and the wheel, and even having an anticorrosive action. However, its composition causes contamination to the environment and to the operator. In face of the increasingly strict environmental laws, it has become necessary to search for new methods of cooling that are at least as effective as conventional one and economically practicable. Thus, the Minimum Quantity of Lubrication was developed as a mist of air and oil applied at high pressure, reducing drastically the use of contaminants. In this work, two oil flows were used for the MQL technique, 30 ml/h and 120 ml/h. The wheel used was a CBN (Boron Cubic Nitride) one, composed of synthetic grains and the workpiece, in a ring format, were produced in AISI 4340 steel quenched and tempered. It was observed from results that MQL can be applied in the industrial processes without losing piece quality.
DOI: 10.6084/m9.figshare.6273530.v1
title: Prevalence of Atherosclerotic Lesions in the Left Internal Thoracic Artery, Evidenced by Selective Angiographic Findings

description: Abstract Background: By observing the high prevalence of failures in the surgical treatment of myocardial revascularization (MR), with the use of the Left Internal Thoracic Artery (LITA) as a graft, evidenced by the international literature, it was sought to demonstrate the prevalence of lesions that would not allow the use of LITA as a graft in myocardial revascularization surgery, with possible alteration in the surgical management performed by the cardiac surgeon, and reduction of the morbimortality of these patients. Objectives: To evaluate the prevalence of atherosclerotic lesions of the LITA, through selective preoperative angiography, in patients submitted to coronary angiography and indicated for myocardial revascularization. We also analyzed other lesions that made the use of LITA unfeasible as a main graft in cases of myocardial revascularization surgery (MRS). Methods: This was a cross-sectional, prevalence study that evaluated, through selective angiography, the LITA of 39 patients with a median age of 63 years, submitted to coronary angiography, with indication of Coronary Artery Bypass Graft (CABG). Categorical variables were compared by chi-square test and Fisher's exact test. The single continuous variable, age, was tested for normality by the Kolmogorov-Smirnov test, described in median (P25; P75) and the groups compared with the Mann-Whitney test. The level of statistical significance adopted was p &lt; 0.05. The analyzes were performed in SPSS® software version 20. Results: It was identified the presence of 7.7% of disorders in the LITA that made it unfeasible to be used. In all of the patients there was no specific symptomatology evidencing the lesion. No variable was shown as a predictor for the occurrence of the outcomes. Conclusion: The prevalence of the lesions found in the study was significant, indicating that a preoperative evaluation of LITA could bring future benefits to the patients submitted to CABG.
DOI: 10.6084/m9.figshare.6273530
title: Prevalence of Atherosclerotic Lesions in the Left Internal Thoracic Artery, Evidenced by Selective Angiographic Findings

description: Abstract Background: By observing the high prevalence of failures in the surgical treatment of myocardial revascularization (MR), with the use of the Left Internal Thoracic Artery (LITA) as a graft, evidenced by the international literature, it was sought to demonstrate the prevalence of lesions that would not allow the use of LITA as a graft in myocardial revascularization surgery, with possible alteration in the surgical management performed by the cardiac surgeon, and reduction of the morbimortality of these patients. Objectives: To evaluate the prevalence of atherosclerotic lesions of the LITA, through selective preoperative angiography, in patients submitted to coronary angiography and indicated for myocardial revascularization. We also analyzed other lesions that made the use of LITA unfeasible as a main graft in cases of myocardial revascularization surgery (MRS). Methods: This was a cross-sectional, prevalence study that evaluated, through selective angiography, the LITA of 39 patients with a median age of 63 years, submitted to coronary angiography, with indication of Coronary Artery Bypass Graft (CABG). Categorical variables were compared by chi-square test and Fisher's exact test. The single continuous variable, age, was tested for normality by the Kolmogorov-Smirnov test, described in median (P25; P75) and the groups compared with the Mann-Whitney test. The level of statistical significance adopted was p &lt; 0.05. The analyzes were performed in SPSS® software version 20. Results: It was identified the presence of 7.7% of disorders in the LITA that made it unfeasible to be used. In all of the patients there was no specific symptomatology evidencing the lesion. No variable was shown as a predictor for the occurrence of the outcomes. Conclusion: The prevalence of the lesions found in the study was significant, indicating that a preoperative evaluation of LITA could bring future benefits to the patients submitted to CABG.
DOI: 10.6084/m9.figshare.7514507
title: The Influence of Comorbid Conditions on Graft Stenosis in Patients with Coronary Artery Bypass Graft Operation

description: Abstract The primary goal of coronary artery bypass grafting is to achieve complete revascularization with grafts that will remain patent throughout the patient's lifetime. This study investigated the association between bypass graft patency and comorbidity burden determined by Charlson comorbidity index (CCI) among patients with previous bypass operation who underwent a control angiography. One-hundred and two patients who had undergone CABG in the past were included to the study. Critical stenosis was defined as 50% or greater coronary luminal obstruction of any coronary vessel or its lateral branch. Patients were divided into 2 groups group 1; critical graft stenosis; (54 pts; 41M, mean age 66.5 ± 7.8 years), group 2; graft patent (48 pts; 31M, mean age; 65.9 ± 8.2 years). Charlson comorbidity index (CCI) and modified CCI scores were used for detecting comorbidities. The comparison of continuous variables between the control and critical CAD groups was performed by the independent sample test. A p value less than 0.05 was considered statistically significant. The two groups were statistically similar with respect to demographic properties, time since bypass operation, cardiovascular risk factors, systolic blood pressure, heart rate, medications used, complete blood counts parameters, and lipid profiles. CCI was significantly higher in Group 1 compared to Group 2 (7.14 ± 2.02 vs 4.72 ± 1.58; p &lt; 0.001). Modified CCI scores were also higher in Group 1 than in Group 2 (6.14 ± 2.02 vs 3.73 ± 1.60; p &lt; 0.001). Graft occlusion was more common among patients with a high comorbidity burden. CCI scoring system may be helpful for determining patients at increased risk at both the preoperative and postoperative periods.
DOI: 10.6084/m9.figshare.7677059
title: The new profile of local managers in the decentralized health system in Brazil

description: ABSTRACT This article analyzes the impact of decentralization on the recruiting standards for the position of municipal health secretary, aiming to understand the extent to which local power has been democratized, as a consequence of the Unified Health System (SUS) implementation. Municipal health secretaries all over the country answered a questionnaire at two different times in the decentralization process - 1996 and 2006 - achieving representative results. The goal was to collect data about their socioeconomic, professional profile, political trajectory and public life. Results show that there are more women, brown (‘pardos’) and low-income people holding the position, and that the qualification of municipal health secretary improved in the period between the two surveys. However, this does not apply to the larger cities and more developed regions, where competition for this position has led to a recruiting standard that combines high levels of professionalism with restricted access for disadvantaged groups. We also found that municipal health secretary are now more politically engaged in manager’s associations than in their previous insertion in civil society networks.
DOI: 10.6084/m9.figshare.7677059.v1
title: The new profile of local managers in the decentralized health system in Brazil

description: ABSTRACT This article analyzes the impact of decentralization on the recruiting standards for the position of municipal health secretary, aiming to understand the extent to which local power has been democratized, as a consequence of the Unified Health System (SUS) implementation. Municipal health secretaries all over the country answered a questionnaire at two different times in the decentralization process - 1996 and 2006 - achieving representative results. The goal was to collect data about their socioeconomic, professional profile, political trajectory and public life. Results show that there are more women, brown (‘pardos’) and low-income people holding the position, and that the qualification of municipal health secretary improved in the period between the two surveys. However, this does not apply to the larger cities and more developed regions, where competition for this position has led to a recruiting standard that combines high levels of professionalism with restricted access for disadvantaged groups. We also found that municipal health secretary are now more politically engaged in manager’s associations than in their previous insertion in civil society networks.
DOI: 10.6084/m9.figshare.7511174
title: Influence of water in the MQL technique in the grinding of steel AISI 4340 using CBN wheels

description: Abstract Usually, machining employs cooling methods to avoid high temperatures. In most cases, the cutting fluid is applied with high flow and low pressures. This technique consumes a large amount of cutting fluid that causes serious problems in the environment and in the health of the worker. An alternative to the conventional cooling method is the Minimum Quantity of Lubricant. The MQL attempts to minimize the consumption of cutting fluid, which this study is about, whereby the reduction provided by this MQL was 99.99%. This technique consumes only the necessary quantity of cutting fluid to create a thin film of lubricant on the cutting surface grinding wheel. The MQL aerosol is injected with high pressure in the contact zone, efficiently lubricating the grinding process. However, the cooling effect of MQL is not enough to dissipate all heat produced during the grinding process. This study analyzes the improvement in the cooling effect caused by the addition of water in the MQL. The tests were done using different concentrations of cutting fluid in water, e.g. 1:0, 1:1, 1:3, 1:5 (oil:water). The experiment occurred on the external cylindrical plunge grinding with a vitrified cubic boron nitrite (CBN) grinding wheel, serving as the workpiece, the AISI 4340 quenched and tempered steel. The analyzed outputs were: surface roughness, roundness deviation, acoustic emission and vibration.. The results improved with the addition of water in the cutting fluid used in the MQL technique. The comparison with the MQL conditions showed that the best condition was the fluid with more water concentration.
DOI: 10.6084/m9.figshare.7514507.v1
title: The Influence of Comorbid Conditions on Graft Stenosis in Patients with Coronary Artery Bypass Graft Operation

description: Abstract The primary goal of coronary artery bypass grafting is to achieve complete revascularization with grafts that will remain patent throughout the patient's lifetime. This study investigated the association between bypass graft patency and comorbidity burden determined by Charlson comorbidity index (CCI) among patients with previous bypass operation who underwent a control angiography. One-hundred and two patients who had undergone CABG in the past were included to the study. Critical stenosis was defined as 50% or greater coronary luminal obstruction of any coronary vessel or its lateral branch. Patients were divided into 2 groups group 1; critical graft stenosis; (54 pts; 41M, mean age 66.5 ± 7.8 years), group 2; graft patent (48 pts; 31M, mean age; 65.9 ± 8.2 years). Charlson comorbidity index (CCI) and modified CCI scores were used for detecting comorbidities. The comparison of continuous variables between the control and critical CAD groups was performed by the independent sample test. A p value less than 0.05 was considered statistically significant. The two groups were statistically similar with respect to demographic properties, time since bypass operation, cardiovascular risk factors, systolic blood pressure, heart rate, medications used, complete blood counts parameters, and lipid profiles. CCI was significantly higher in Group 1 compared to Group 2 (7.14 ± 2.02 vs 4.72 ± 1.58; p &lt; 0.001). Modified CCI scores were also higher in Group 1 than in Group 2 (6.14 ± 2.02 vs 3.73 ± 1.60; p &lt; 0.001). Graft occlusion was more common among patients with a high comorbidity burden. CCI scoring system may be helpful for determining patients at increased risk at both the preoperative and postoperative periods.