cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7898801
title: NPV analysis of multiple surface constraints for pit expansion scenarios under geological uncertainty

description: Abstract To optimize a mining project, it is necessary to deal with several technical aspects and constraints, such as orebody modelling, reserve estimation, blending strategy, optimal and operational pit designs, cost control, environmental issues, among others. In this sense, locating surface infrastructures is one of the most critical mine planning concerns, as approximating these facilities to the pit in order to reduce the operational costs, might interfere with future pit expansions in new favorable scenarios. In such cases, impacts on the project's net present value (NPV) are inevitable and must be technically dealt with, evaluating alternative scenarios to propose a strategy that increases profitability. The aim of this study is to evaluate, through NPV comparisons, different constrained scenarios, under geological uncertainty, determining the possibility of moving the constraints from their current position and/or defining priorities measuring the impact that each of them represents on the project's profitability. The methodology is applied to a phosphate mine, to determine the best alternative from a long-term mine planning perspective. The use of the hybrid pit approach, applied to a simulated grade model, allowed to identify the occurrence of probability zones within a mathematical pit, providing further information to support decision making regarding infrastructure relocation.
DOI: 10.6084/m9.figshare.14273045
title: Sources of payment for hospitalization and clinical performance: the case of hospitals in São Paulo, Brazil

description: ABSTRACT The aim was to analyze clinical performance through the application of Hospital Standardized Mortality Ratio (HSMR) and its variation according to admissions payment sources and hospitals financing arrangements. Secondary data was used and diagnoses that account for 80% of hospital deaths were analyzed, adjusted by patient risk. Performance observed was worse than expected in public and mixed-public hospitals, and in SUS (Unified Health System) hospitalizations. The relation between source of payment and HSMR may indicate differences in clinical practice or in the severity of cases. This methodology contributes to the monitoring of hospital quality, directing public policies and regulations.
DOI: 10.6084/m9.figshare.7508225
title: Available phosphorus in diet of meat quail in the growth phase

description: SUMMARY This experiment was conducted to evaluate the requirement of available phosphorus (aP) for meat quails in the growth phase (22 to 42 days old). A total of 650 birds were used, the levels of available phosphorus distributed in randomized block in a factorial design 5 x 2 (levels of aP x gender) with six replications of 13 birds per pen. The available phosphorus levels were studied: 0.11, 0.21, 0.31, 0.41 and 0.51%. We evaluated the feed intake, weight gain, feed conversion, the amount of calcium, phosphorus and tibia ash of birds. No effect (p&gt;0.05) interaction between the levels of aP and gender or the isolated effect of gender. It was found that aP levels only affected the body weight gain of quail (p≤0.05) by aP studied. Except tibia ash all bone variables were influenced for interaction (p≤0.01) among the factors and gender. For quail females recommended level of 0.51% available phosphorus in the diet, given the best results, and for males was not possible to recommend a level of available phosphorus.
DOI: 10.6084/m9.figshare.7508225.v1
title: Available phosphorus in diet of meat quail in the growth phase

description: SUMMARY This experiment was conducted to evaluate the requirement of available phosphorus (aP) for meat quails in the growth phase (22 to 42 days old). A total of 650 birds were used, the levels of available phosphorus distributed in randomized block in a factorial design 5 x 2 (levels of aP x gender) with six replications of 13 birds per pen. The available phosphorus levels were studied: 0.11, 0.21, 0.31, 0.41 and 0.51%. We evaluated the feed intake, weight gain, feed conversion, the amount of calcium, phosphorus and tibia ash of birds. No effect (p&gt;0.05) interaction between the levels of aP and gender or the isolated effect of gender. It was found that aP levels only affected the body weight gain of quail (p≤0.05) by aP studied. Except tibia ash all bone variables were influenced for interaction (p≤0.01) among the factors and gender. For quail females recommended level of 0.51% available phosphorus in the diet, given the best results, and for males was not possible to recommend a level of available phosphorus.
DOI: 10.6084/m9.figshare.7898801.v1
title: NPV analysis of multiple surface constraints for pit expansion scenarios under geological uncertainty

description: Abstract To optimize a mining project, it is necessary to deal with several technical aspects and constraints, such as orebody modelling, reserve estimation, blending strategy, optimal and operational pit designs, cost control, environmental issues, among others. In this sense, locating surface infrastructures is one of the most critical mine planning concerns, as approximating these facilities to the pit in order to reduce the operational costs, might interfere with future pit expansions in new favorable scenarios. In such cases, impacts on the project's net present value (NPV) are inevitable and must be technically dealt with, evaluating alternative scenarios to propose a strategy that increases profitability. The aim of this study is to evaluate, through NPV comparisons, different constrained scenarios, under geological uncertainty, determining the possibility of moving the constraints from their current position and/or defining priorities measuring the impact that each of them represents on the project's profitability. The methodology is applied to a phosphate mine, to determine the best alternative from a long-term mine planning perspective. The use of the hybrid pit approach, applied to a simulated grade model, allowed to identify the occurrence of probability zones within a mathematical pit, providing further information to support decision making regarding infrastructure relocation.
DOI: 10.6084/m9.figshare.14273045.v1
title: Sources of payment for hospitalization and clinical performance: the case of hospitals in São Paulo, Brazil

description: ABSTRACT The aim was to analyze clinical performance through the application of Hospital Standardized Mortality Ratio (HSMR) and its variation according to admissions payment sources and hospitals financing arrangements. Secondary data was used and diagnoses that account for 80% of hospital deaths were analyzed, adjusted by patient risk. Performance observed was worse than expected in public and mixed-public hospitals, and in SUS (Unified Health System) hospitalizations. The relation between source of payment and HSMR may indicate differences in clinical practice or in the severity of cases. This methodology contributes to the monitoring of hospital quality, directing public policies and regulations.
DOI: 10.6084/m9.figshare.5907823
title: Digital Games in the School: improving attention and cognitive flexibility

description: Abstract: This study analyzes the effects of the use of digital games in the school context for the improvement of cognitive flexibility and attention. This research is featured as a quasi-experimental study, involving 100 children divided into two groups: participant and control. We proposed interventions for the use of digital games five days a week for six weeks on the classroom. Both groups were assessed before and after the intervention based on the application of psychological tests. The results showed that the participant group, when compared to the control group, had a significant improvement concerning attention (p&lt;0.005) and cognitive flexibility (p &lt;0.05). This suggests that the use of digital games can contribute to the improvement of the executive functions.
DOI: 10.6084/m9.figshare.5907823.v1
title: Digital Games in the School: improving attention and cognitive flexibility

description: Abstract: This study analyzes the effects of the use of digital games in the school context for the improvement of cognitive flexibility and attention. This research is featured as a quasi-experimental study, involving 100 children divided into two groups: participant and control. We proposed interventions for the use of digital games five days a week for six weeks on the classroom. Both groups were assessed before and after the intervention based on the application of psychological tests. The results showed that the participant group, when compared to the control group, had a significant improvement concerning attention (p&lt;0.005) and cognitive flexibility (p &lt;0.05). This suggests that the use of digital games can contribute to the improvement of the executive functions.
DOI: 10.6084/m9.figshare.7515182
title: Susceptibility to weathering damage and oxidative stress on soybean seeds with different lignin contents in the seed coat

description: Abstract: This study aimed at evaluating the relationship among lignin content in the seed coat of soybean seeds with tolerance to weathering damage and oxidative stress. Four soybean cultivars (CD 208, CD 215, CD 202 and BRS 184), with lignin contents in the seed coat of 4.2, 2.6, 2.0 and 1.7%, respectively, were used. Seeds were subjected to deterioration by moisture, through artificially simulated rains. Pods of all cultivars were subjected to irrigation by constant sprinkling during 4 hours, and then dried in oven, set at 35 °C, for 37 hours; repeating twice such procedure. After these treatments seeds were subjected to tests and then compared to the control. Tests performed were: germination, accelerated aging and tetrazolium test; thereby quantifying the occurrence of damages by weathering damage. The activity of enzymes superoxide dismutase and guaiacol peroxidase was measured; and the lipid peroxidation was assessed. Soybean cultivars CD 208 and CD 215, with higher lignin content in the seed coat, were less susceptible to weathering damage. Seeds of cultivar CD 208 have also presented lower oxidative stress, when subjected to weathering damage stress.
DOI: 10.6084/m9.figshare.7515182.v1
title: Susceptibility to weathering damage and oxidative stress on soybean seeds with different lignin contents in the seed coat

description: Abstract: This study aimed at evaluating the relationship among lignin content in the seed coat of soybean seeds with tolerance to weathering damage and oxidative stress. Four soybean cultivars (CD 208, CD 215, CD 202 and BRS 184), with lignin contents in the seed coat of 4.2, 2.6, 2.0 and 1.7%, respectively, were used. Seeds were subjected to deterioration by moisture, through artificially simulated rains. Pods of all cultivars were subjected to irrigation by constant sprinkling during 4 hours, and then dried in oven, set at 35 °C, for 37 hours; repeating twice such procedure. After these treatments seeds were subjected to tests and then compared to the control. Tests performed were: germination, accelerated aging and tetrazolium test; thereby quantifying the occurrence of damages by weathering damage. The activity of enzymes superoxide dismutase and guaiacol peroxidase was measured; and the lipid peroxidation was assessed. Soybean cultivars CD 208 and CD 215, with higher lignin content in the seed coat, were less susceptible to weathering damage. Seeds of cultivar CD 208 have also presented lower oxidative stress, when subjected to weathering damage stress.
DOI: 10.6084/m9.figshare.7367576
title: The effect of a bleaching agent on the pigment removal and the bond strength of bulk-fill resin composites: an in vitro study

description: Abstract Introduction In order to simplify the technique, reduce the time required for direct adhesive restorations, bulk-fill resin composites have been developed be applied in bulk placement up to 4 mm increments. Objective Evaluating the color change (ΔE) and the microtensile bond strength (μTBS) of bulk fill resin composites (BFRC) to dentin after the immersion in regular beverages and the application of bleaching systems. Method Forty-five human molar teeth were randomly distributed in three groups according to the filling material (n=15): Filtek Bulk Fill, Tetric N Ceram Bulk Fill and Filtek Z100. The restored teeth were immersed in coffee, wine and distilled water (n=5) for 72 hours. The color parameters were measured using a spectrophotometer, having as basis the CIE L*a*b*, before and after tooth staining and application of bleaching processes. Subsequently, the teeth were sectioned to obtain the specimens for the microtensile testing. The ΔE values were analyzed applying the Kruskal-Wallis and the Wilcoxon tests, and the μTBS values were analyzed applying the ANOVA and the Bonferroni tests (p&lt;0.05). Result There were no significant differences in the ∆E values when comparing the BFRCs to the conventional resin composite (CRC) in most of the experimental groups. The ∆E values did not present significant differences before and after the application of bleaching processes for all the tested resin composites. The BFRCs presented higher μTBS values than the CRC after exposure to distilled water, wine and bleaching agent. Conclusion The studied BFRCs presented similar color stability to the CRC. The BFRCs presented higher bond strength to the dentin than the CTC in most of the evaluated conditions. The bleaching agent was not effective in whitening the stained restored teeth.
DOI: 10.6084/m9.figshare.7367996.v1
title: Oral health of the elderly with 80 years or more: condition, self-perception and use of dental services

description: Abstract Introduction Older elderly people have poor oral health, not usually seek for dental services, and self-perceived oral health that is inconsistent with treatment needs. Objective To compare the oral health condition, self-perception and use of dental services of elderly people with 80+ years of age in a southern Brazilian municipality. Method Descriptive study with 59 elders, in 2011 and 2015, Antônio Carlos, Santa Catarina. Demographic data, use of services, Oral Health Impact Profile – 14 item, habits and some oral conditions were investigated. Result In both years, more than 70% required upper dentures, although more than 80% were satisfied with teeth/prosthesis. More than 60% reported last dental visit more than 3 years ago. It was observed a significative increasing in lower denture need, dry mouth, plaque and discomfort to eat; decreasing routine dental visits and tooth extraction. Conclusion Although there was a decrease in extractions, the elderly had prosthetic need and reported problems with eating. These results reaffirm the importance of including the elderly with 80+ years in the oral health services network.
DOI: 10.6084/m9.figshare.7367576.v1
title: The effect of a bleaching agent on the pigment removal and the bond strength of bulk-fill resin composites: an in vitro study

description: Abstract Introduction In order to simplify the technique, reduce the time required for direct adhesive restorations, bulk-fill resin composites have been developed be applied in bulk placement up to 4 mm increments. Objective Evaluating the color change (ΔE) and the microtensile bond strength (μTBS) of bulk fill resin composites (BFRC) to dentin after the immersion in regular beverages and the application of bleaching systems. Method Forty-five human molar teeth were randomly distributed in three groups according to the filling material (n=15): Filtek Bulk Fill, Tetric N Ceram Bulk Fill and Filtek Z100. The restored teeth were immersed in coffee, wine and distilled water (n=5) for 72 hours. The color parameters were measured using a spectrophotometer, having as basis the CIE L*a*b*, before and after tooth staining and application of bleaching processes. Subsequently, the teeth were sectioned to obtain the specimens for the microtensile testing. The ΔE values were analyzed applying the Kruskal-Wallis and the Wilcoxon tests, and the μTBS values were analyzed applying the ANOVA and the Bonferroni tests (p&lt;0.05). Result There were no significant differences in the ∆E values when comparing the BFRCs to the conventional resin composite (CRC) in most of the experimental groups. The ∆E values did not present significant differences before and after the application of bleaching processes for all the tested resin composites. The BFRCs presented higher μTBS values than the CRC after exposure to distilled water, wine and bleaching agent. Conclusion The studied BFRCs presented similar color stability to the CRC. The BFRCs presented higher bond strength to the dentin than the CTC in most of the evaluated conditions. The bleaching agent was not effective in whitening the stained restored teeth.
DOI: 10.6084/m9.figshare.7367996
title: Oral health of the elderly with 80 years or more: condition, self-perception and use of dental services

description: Abstract Introduction Older elderly people have poor oral health, not usually seek for dental services, and self-perceived oral health that is inconsistent with treatment needs. Objective To compare the oral health condition, self-perception and use of dental services of elderly people with 80+ years of age in a southern Brazilian municipality. Method Descriptive study with 59 elders, in 2011 and 2015, Antônio Carlos, Santa Catarina. Demographic data, use of services, Oral Health Impact Profile – 14 item, habits and some oral conditions were investigated. Result In both years, more than 70% required upper dentures, although more than 80% were satisfied with teeth/prosthesis. More than 60% reported last dental visit more than 3 years ago. It was observed a significative increasing in lower denture need, dry mouth, plaque and discomfort to eat; decreasing routine dental visits and tooth extraction. Conclusion Although there was a decrease in extractions, the elderly had prosthetic need and reported problems with eating. These results reaffirm the importance of including the elderly with 80+ years in the oral health services network.
DOI: 10.6084/m9.figshare.7513190
title: Operational conditions of an electrostatic separator for concentrate copper from electronic waste

description: Abstract Interest in recycling for the recovery of valuable substances, such as precious metals from electric and electronic waste has been increasing year after year due to the large amount present in such waste compared to primary sources. There is environmental concern, since the amount of this kind of waste is increasing due to rapid technological advances. This study aimed to test the different operating conditions of an electrostatic separator for the concentration of copper from printer circuit boards (PCB). The PCBs were milled in knife mills and separated according to the difference of granule sizes into two fractions: A (&lt;0.5 mm); B (0.5
DOI: 10.6084/m9.figshare.7516871
title: Endoscopic versus microscopic transsphenoidal surgery in the treatment of pituitary tumors: systematic review and meta-analysis of randomized and non-randomized controlled trials

description: ABSTRACT We conducted a systematic review and meta-analysis of randomized and non-randomized controlled trials that compared pure endoscopic with microscopic transsphenoidal surgery (TSS) in the resection of pituitary tumors. Embase, PubMed, Lilacs, and Central Cochrane were used as our data sources. The outcomes were total tumor resection, achievement of biochemical control of functioning adenomas, hospital stay and surgery complications. The randomized trials were analyzed using the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) approach. Two randomized and three prospective controlled non-randomized studies were included. Two studies, including 68 patients, evaluated total tumor resection and the meta-analysis did not show differences between the groups [RR: 1.45 (95% CI: 0.87, 2.44)]. Three studies involving 65 patients analyzed the achievement of biochemical control and no statistical difference was found [RR: 0.94 (95% CI: 0.7, 1.26)]. All five studies compared the frequency of postoperative complications between intervention and control group and meta-analysis favored for a low rate of postoperative complications in the endoscopic TSS group [(RR: 0.37 (95% CI: 0.16, 0.83)]. Due to the low evidence level and low number of observations, the results of our meta-analysis should not be viewed as a final proof of inferiority or superiority of one approach in relation to the other. More data including higher numbers of observations are needed.
DOI: 10.6084/m9.figshare.7516871.v1
title: Endoscopic versus microscopic transsphenoidal surgery in the treatment of pituitary tumors: systematic review and meta-analysis of randomized and non-randomized controlled trials

description: ABSTRACT We conducted a systematic review and meta-analysis of randomized and non-randomized controlled trials that compared pure endoscopic with microscopic transsphenoidal surgery (TSS) in the resection of pituitary tumors. Embase, PubMed, Lilacs, and Central Cochrane were used as our data sources. The outcomes were total tumor resection, achievement of biochemical control of functioning adenomas, hospital stay and surgery complications. The randomized trials were analyzed using the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) approach. Two randomized and three prospective controlled non-randomized studies were included. Two studies, including 68 patients, evaluated total tumor resection and the meta-analysis did not show differences between the groups [RR: 1.45 (95% CI: 0.87, 2.44)]. Three studies involving 65 patients analyzed the achievement of biochemical control and no statistical difference was found [RR: 0.94 (95% CI: 0.7, 1.26)]. All five studies compared the frequency of postoperative complications between intervention and control group and meta-analysis favored for a low rate of postoperative complications in the endoscopic TSS group [(RR: 0.37 (95% CI: 0.16, 0.83)]. Due to the low evidence level and low number of observations, the results of our meta-analysis should not be viewed as a final proof of inferiority or superiority of one approach in relation to the other. More data including higher numbers of observations are needed.
DOI: 10.6084/m9.figshare.6318686
title: Pertussis reemerging: epidemiological profile of confirmed cases

description: Abstract Introduction Pertussis is an infectious disease that currently has a reemerging profile. Factors such as weaknesses in the immune system, 1-year follow-up vaccination, changes in genotype of the bacteria and increased susceptibility among young and adults have been raising rate of disease incidence. Objective Thus, it is aimed to identify and to characterize the epidemiological profile of confirmed cases in Rio Grande do Norte (RN) state. Method It was analyzed data from RN at Sinan databases from 2011 to 2014. Results It was observed that the confirmed cases were predominantly children under 6 months of age. The classic symptoms of the disease have been identified in most affected. It was also perceived that the confirmed cases were strongly linked to non-uptake of immunization or incomplete vaccination. Conclusion The findings suggest the importance of vaccination to control disease and the need to improve activities surveillance to provide an accurate epidemiological representation of the disease.