cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7367603.v1
title: Drinking water quality in schools of the Santarém region, Amazon, Brazil, and health implications for school children

description: Abstract The quality of drinking water and its health implications for school children were examined at schools in the Santarém region, Amazon, Brazil. In this region, the population is fully supplied by groundwater from the voluminous Alter do Chão aquifer. Drinking water samples from three schools in Santarem city and from one school at the rural Mojuí dos Campos town were subjected to microbiological and physicochemical compositional analyses. The health risk of human exposure to chemical compounds through water intake was also evaluated. The results indicated that most water samples were contaminated with total coliform and with E. coli, which could cause serious intestinal disorders for school children. Drinking water was acidic and most of the chemical element concentrations were within Brazilian water potability recommended levels. One exception was the high aluminium content in schools from Santarem served by shallower wells, suggesting that further epidemiological studies are necessary and the monitoring of exposed school children should not be discarded. Elevated nitrate concentrations were also noted in schools from Santarém with shallower wells, indicating lack of sanitation and the importance of periodic monitoring of drinking water to prevent adverse health effects. Quantification of human health risk indicated a hazard in schools served by shallower wells, with aluminium as the main pollutant, followed by nitrate. The results showed that most drinking water quality parameters are in accordance with Brazilian legislation. However, microbiological contamination, water acidity, aluminium and nitrate concentrations must be taken into consideration for local governments in order to prevent related diseases among school children.
DOI: 10.6084/m9.figshare.7516601.v1
title: Availability of dental treatment is associated with satisfaction derived from Primary Health Care Services accessed by elderly

description: Abstract Objective This research evaluated whether having dental treatment available in the primary health care centers of the Brazilian Unified Health System was associated with greater satisfaction with the services accessed. The offering of dental care within the health service that elders usually access may improve their satisfaction with the services as a whole. Material and method In this cross-sectional study, 401 elders living in the districts of Lomba do Pinheiro and Partenon in Porto Alegre, Brazil were interviewed. Elders were selected using a cluster sampling design process from census tract drawings. Result Poisson Regression revealed that age and dental treatment supply were associated with outcome, and age, number of teeth, and the presence of dental treatment were associated with a higher prevalence of satisfaction with health services. Conclusion These results provide new contributions for health system qualification because this study demonstrated the importance of having dental treatment available to improve the satisfaction of older people with the Primary Health Care (PHC) services accessed.
DOI: 10.6084/m9.figshare.7391000
title: Silver nanoparticles impregnated with polyamide-66 to disinfect drinking water

description: Abstract The importance of the preservation of water resources has resulted in the application of technologies such as nanostructured materials, which are able to minimize the impact associated with water contamination. This work evaluated the application of polyamide-66 (PA) pellets functionalized with silver nanoparticles (AgNPs) at polymer mass percentages of 0.05, 0.10 and 0.50% to disinfect of drinking water. Studies were carried out in three stages. The first stage was the synthesis of the silver nanoparticles by using silver nitrate as a metal precursor and sodium borohydrate as a reduction agent. The colloidal dispersion was characterized by UV-Vis spectrophotometry and transmission electron microscopy (MET). Afterwards, the nanostructures were incorporated into a polyamide-66 polymeric matrix. In the second stage, the silver ions leached from the polymer matrix in the water after a three-hour period were quantified in order to evaluate the limit established by Conama Resolution 357/2005, which imposes a concentration limit of 0.010 mg L-1. The best results were obtained with the application of 0.05% AgNPs in the polymeric matrix, yielding an average concentration of silver ions lixiviated of 0.008 mg L-1. The last step comprised the quantification of the antibacterial activity of the polymer matrix containing 0.05% of AgNPs against the microorganism E. coli using the Standard Test Method for Determining the Antimicrobial Agents Under Dynamic Contact Conditions. The samples containing 0.05% of AgNPs exhibited an antibacterial reduction of 97.89% after 24 h of incubation under stirring at room temperature (25°C).
DOI: 10.6084/m9.figshare.7516601
title: Availability of dental treatment is associated with satisfaction derived from Primary Health Care Services accessed by elderly

description: Abstract Objective This research evaluated whether having dental treatment available in the primary health care centers of the Brazilian Unified Health System was associated with greater satisfaction with the services accessed. The offering of dental care within the health service that elders usually access may improve their satisfaction with the services as a whole. Material and method In this cross-sectional study, 401 elders living in the districts of Lomba do Pinheiro and Partenon in Porto Alegre, Brazil were interviewed. Elders were selected using a cluster sampling design process from census tract drawings. Result Poisson Regression revealed that age and dental treatment supply were associated with outcome, and age, number of teeth, and the presence of dental treatment were associated with a higher prevalence of satisfaction with health services. Conclusion These results provide new contributions for health system qualification because this study demonstrated the importance of having dental treatment available to improve the satisfaction of older people with the Primary Health Care (PHC) services accessed.
DOI: 10.6084/m9.figshare.7391000.v1
title: Silver nanoparticles impregnated with polyamide-66 to disinfect drinking water

description: Abstract The importance of the preservation of water resources has resulted in the application of technologies such as nanostructured materials, which are able to minimize the impact associated with water contamination. This work evaluated the application of polyamide-66 (PA) pellets functionalized with silver nanoparticles (AgNPs) at polymer mass percentages of 0.05, 0.10 and 0.50% to disinfect of drinking water. Studies were carried out in three stages. The first stage was the synthesis of the silver nanoparticles by using silver nitrate as a metal precursor and sodium borohydrate as a reduction agent. The colloidal dispersion was characterized by UV-Vis spectrophotometry and transmission electron microscopy (MET). Afterwards, the nanostructures were incorporated into a polyamide-66 polymeric matrix. In the second stage, the silver ions leached from the polymer matrix in the water after a three-hour period were quantified in order to evaluate the limit established by Conama Resolution 357/2005, which imposes a concentration limit of 0.010 mg L-1. The best results were obtained with the application of 0.05% AgNPs in the polymeric matrix, yielding an average concentration of silver ions lixiviated of 0.008 mg L-1. The last step comprised the quantification of the antibacterial activity of the polymer matrix containing 0.05% of AgNPs against the microorganism E. coli using the Standard Test Method for Determining the Antimicrobial Agents Under Dynamic Contact Conditions. The samples containing 0.05% of AgNPs exhibited an antibacterial reduction of 97.89% after 24 h of incubation under stirring at room temperature (25°C).
DOI: 10.6084/m9.figshare.7508729
title: What Drives Long Term Real Interest Rates in Brazil?

description: ABSTRACT This paper investigates the drivers of long term real interest rates in Brazil. It is shown that long term yield on inflation linked bonds are driven by yields on 10 year interest rates of United States (US) government bonds and 10 year risk premium, as measured by the Credit Default Swap (CDS). Long term interest rates in Brazil were on a downward trend, following US real rates and stable risk premium, until the taper tantrum in the first half of 2013. From then onwards, real interest rates rose due to the increase in US real rates in anticipation of the beginning of monetary policy normalization and, more recently, due to a sharp increase in Brazilian risk premium. Policy interest rates do not significantly affect long term real interest rates.
DOI: 10.6084/m9.figshare.7510154
title: Treatment of landfill leachate using Fenton Processes and Photo-Fenton Solar

description: The leachate from municipal solid waste landfills is a complex mixture of organic and inorganic substances, which can damage the environment due to toxicity and the high concentration of recalcitrant organic matter. This work applied advanced oxidation processes (AOP) to the treatment of leachate from the Gericinó (Rio de Janeiro / RJ) and Gramacho (Duque de Caxias / RJ) landfills. These landfills were both in operation for more than 30 years; the latter closed two years ago. The purpose of using AOP is to improve the leachate quality prior to a subsequent biological treatment. The bacteria Aliivibrio fischeri was used as a biological process for evaluation of toxicity. The Dark-Fenton Process employed in bench scale experiments with a pH of 3.0 and Fe+2:H2O2 ratio = 1:5 resulted in removals of 56% and 19% for COD leachate of the Gericinó and Gramacho leachates, respectively. The Solar Photo-Fenton Process conducted in pilot plant tests at pH = 3.0 and Fe+2:H2O2 ratio = 1:5 generated COD removal 88% and 78%, respectively. These conditions led to a decrease in the toxicity of leachates' coefficient values to a degree equal to 50 % - for Aliivibrio fischeri greater than 50% - indicating a more suitable leachate for further biological treatment.
DOI: 10.6084/m9.figshare.7517792
title: Gravidarum granuloma associated to an osseointegrated implant: case report

description: Introduction: Pyogenic granuloma, known as gravidarum granuloma or pregnancy granuloma, is a benign non-neoplastic reactive oral lesion that may occur in pregnant women. It is usually a highly vascularized mass, which has exophytic characteristics, and it may be sessile or pedunculated. Its surface has usually a smooth or lobular aspect, with its coloration ranging from red to pink. The pain sensitivity will depend on the degree of injury involving the traumatic lesion, but it is frequently painless. Adjacent areas to dental implants are rare for the appearance of this type of granuloma.Objective:The aim of this case report was to present a clinic case of gravidarum granuloma in the region of lower lingual gingiva, adjacent to an osseointegrated implant in a 33-year-old woman, with 3 months of gestation, who had the lesion since the beginning of her pregnancy.Conclusion: Gravidarum granuloma was diagnosed in association to a dental implant, and it highlights the necessity for improvements of oral hygiene in the peri-implant regions. Surgical treatment with excisional biopsy plus hygiene control were enough to settle the case.
DOI: 10.6084/m9.figshare.7517792.v1
title: Gravidarum granuloma associated to an osseointegrated implant: case report

description: Introduction: Pyogenic granuloma, known as gravidarum granuloma or pregnancy granuloma, is a benign non-neoplastic reactive oral lesion that may occur in pregnant women. It is usually a highly vascularized mass, which has exophytic characteristics, and it may be sessile or pedunculated. Its surface has usually a smooth or lobular aspect, with its coloration ranging from red to pink. The pain sensitivity will depend on the degree of injury involving the traumatic lesion, but it is frequently painless. Adjacent areas to dental implants are rare for the appearance of this type of granuloma.Objective:The aim of this case report was to present a clinic case of gravidarum granuloma in the region of lower lingual gingiva, adjacent to an osseointegrated implant in a 33-year-old woman, with 3 months of gestation, who had the lesion since the beginning of her pregnancy.Conclusion: Gravidarum granuloma was diagnosed in association to a dental implant, and it highlights the necessity for improvements of oral hygiene in the peri-implant regions. Surgical treatment with excisional biopsy plus hygiene control were enough to settle the case.
DOI: 10.6084/m9.figshare.7508729.v1
title: What Drives Long Term Real Interest Rates in Brazil?

description: ABSTRACT This paper investigates the drivers of long term real interest rates in Brazil. It is shown that long term yield on inflation linked bonds are driven by yields on 10 year interest rates of United States (US) government bonds and 10 year risk premium, as measured by the Credit Default Swap (CDS). Long term interest rates in Brazil were on a downward trend, following US real rates and stable risk premium, until the taper tantrum in the first half of 2013. From then onwards, real interest rates rose due to the increase in US real rates in anticipation of the beginning of monetary policy normalization and, more recently, due to a sharp increase in Brazilian risk premium. Policy interest rates do not significantly affect long term real interest rates.
DOI: 10.6084/m9.figshare.6125246
title: Profile of victims of sexual violence receiving care in Campinas

description: Abstract The aim of this study was to characterize the profile of the care offered to female victims of sexual violence with an emphasis on legal aspects. A descriptive and retrospective study of 41 women with an average age of 31 years who had experienced sexual violence within the stipulated period was carried out. The highest frequency of the crimes occurred between 00h00min and 06h00min (n=17). There was a frequency of 56% for the data “police report”. The crimes found were rape (n=37) and rape by deception (n=4). A total of 12.20% victims (n=5) completed the proposed treatment. The majority of victims were single, and subjected to rape with violence or serious threat in the “street” location. Although more than half of the sample described completing a police report, the veracity of this information could not be confirmed as the reports were not found in their medical records.
DOI: 10.6084/m9.figshare.7510154.v1
title: Treatment of landfill leachate using Fenton Processes and Photo-Fenton Solar

description: The leachate from municipal solid waste landfills is a complex mixture of organic and inorganic substances, which can damage the environment due to toxicity and the high concentration of recalcitrant organic matter. This work applied advanced oxidation processes (AOP) to the treatment of leachate from the Gericinó (Rio de Janeiro / RJ) and Gramacho (Duque de Caxias / RJ) landfills. These landfills were both in operation for more than 30 years; the latter closed two years ago. The purpose of using AOP is to improve the leachate quality prior to a subsequent biological treatment. The bacteria Aliivibrio fischeri was used as a biological process for evaluation of toxicity. The Dark-Fenton Process employed in bench scale experiments with a pH of 3.0 and Fe+2:H2O2 ratio = 1:5 resulted in removals of 56% and 19% for COD leachate of the Gericinó and Gramacho leachates, respectively. The Solar Photo-Fenton Process conducted in pilot plant tests at pH = 3.0 and Fe+2:H2O2 ratio = 1:5 generated COD removal 88% and 78%, respectively. These conditions led to a decrease in the toxicity of leachates' coefficient values to a degree equal to 50 % - for Aliivibrio fischeri greater than 50% - indicating a more suitable leachate for further biological treatment.
DOI: 10.6084/m9.figshare.7678391
title: Impact of Complications of Myocardial Revascularization Surgery on Expenses During Hospital Stay

description: Abstract Background: Coronary artery bypass grafting (CABG) is an important treatment option for obstructive coronary artery disease, but it represents a high expense for paying sources. The complications of CABG impose an additional expense to the procedure that is not yet clearly established. Objective: To determine the economic impact of postoperative complications of CABG during hospitalization in a hospital of the unified health system (SUS). Methods: This is an observational study involving 240 patients undergoing isolated CABG in a reference hospital in cardiology in 2013. Patients aged over 30 years with proven coronary artery disease and indication to perform CRVM were included. Patients who performed CRVM associated with other procedures were excluded. Results: The average cost of hospitalization was R$ 22,647.24 (SD = R$ 28,105.66). In 97 patients who presented some complication the average cost was R$ 35,400.28 (SD = R$ 40,509.47), and in the 143 patients without complications the average cost was R$ 13,996.57 (SD = R$ 5,800.61) (p &lt; 0.001). Expenditures ranged from R$ 17,344.37 in patients with one complication up to R$ 104,596.52 in patients with five complications (p &lt; 0.001). Conclusions: The occurrence of complications during hospitalization for CABG significantly increases the costs of the procedure, but the magnitude of this increase depends on the type of complication developed, and higher expenses related to cardiovascular complications, infections and bleeding. With this information, managers can improve the allocation of resources to health.
DOI: 10.6084/m9.figshare.6125246.v1
title: Profile of victims of sexual violence receiving care in Campinas

description: Abstract The aim of this study was to characterize the profile of the care offered to female victims of sexual violence with an emphasis on legal aspects. A descriptive and retrospective study of 41 women with an average age of 31 years who had experienced sexual violence within the stipulated period was carried out. The highest frequency of the crimes occurred between 00h00min and 06h00min (n=17). There was a frequency of 56% for the data “police report”. The crimes found were rape (n=37) and rape by deception (n=4). A total of 12.20% victims (n=5) completed the proposed treatment. The majority of victims were single, and subjected to rape with violence or serious threat in the “street” location. Although more than half of the sample described completing a police report, the veracity of this information could not be confirmed as the reports were not found in their medical records.
DOI: 10.6084/m9.figshare.7367642
title: Spatio-temporal variability of erosivity in Mato Grosso, Brazil

description: Abstract The impact of rainfall on surfaces lacking vegetal cover can dissociate soil particles, thereby initiating the erosion process. This is known as rainfall erosivity and is expressed by the R factor in the Universal Soil Loss Equation. Agricultural areas often show seasonally erosion susceptibility throughout the year due to oscillations of the soil exposure rate and the vegetation change. Considering that approximately 30 million ha of the Mato Grosso State in Brazil is used for agriculture, this study aimed to predict and map the spatial and temporal variability of its territory. We evaluated the monthly (EI 30) and annual (R) erosivity for 158 rain gauge stations and spatialized the values of EI 30 and R by the Kriging method. It was observed that R values ranked as very high in the north, and high and medium-high in the south of Mato Grosso state. The mean value is 8835 MJ mm ha-1 h-1 year-1, considered high. Ninety-one percent of the annual erosivity was concentrated in the period between October and April, corresponding to the rainy season. The highest R factor values were found in the macro-regions of the northwest, north, west and medium-north of Mato Grosso State.
DOI: 10.6084/m9.figshare.7367642.v1
title: Spatio-temporal variability of erosivity in Mato Grosso, Brazil

description: Abstract The impact of rainfall on surfaces lacking vegetal cover can dissociate soil particles, thereby initiating the erosion process. This is known as rainfall erosivity and is expressed by the R factor in the Universal Soil Loss Equation. Agricultural areas often show seasonally erosion susceptibility throughout the year due to oscillations of the soil exposure rate and the vegetation change. Considering that approximately 30 million ha of the Mato Grosso State in Brazil is used for agriculture, this study aimed to predict and map the spatial and temporal variability of its territory. We evaluated the monthly (EI 30) and annual (R) erosivity for 158 rain gauge stations and spatialized the values of EI 30 and R by the Kriging method. It was observed that R values ranked as very high in the north, and high and medium-high in the south of Mato Grosso state. The mean value is 8835 MJ mm ha-1 h-1 year-1, considered high. Ninety-one percent of the annual erosivity was concentrated in the period between October and April, corresponding to the rainy season. The highest R factor values were found in the macro-regions of the northwest, north, west and medium-north of Mato Grosso State.
DOI: 10.6084/m9.figshare.7678391.v1
title: Impact of Complications of Myocardial Revascularization Surgery on Expenses During Hospital Stay

description: Abstract Background: Coronary artery bypass grafting (CABG) is an important treatment option for obstructive coronary artery disease, but it represents a high expense for paying sources. The complications of CABG impose an additional expense to the procedure that is not yet clearly established. Objective: To determine the economic impact of postoperative complications of CABG during hospitalization in a hospital of the unified health system (SUS). Methods: This is an observational study involving 240 patients undergoing isolated CABG in a reference hospital in cardiology in 2013. Patients aged over 30 years with proven coronary artery disease and indication to perform CRVM were included. Patients who performed CRVM associated with other procedures were excluded. Results: The average cost of hospitalization was R$ 22,647.24 (SD = R$ 28,105.66). In 97 patients who presented some complication the average cost was R$ 35,400.28 (SD = R$ 40,509.47), and in the 143 patients without complications the average cost was R$ 13,996.57 (SD = R$ 5,800.61) (p &lt; 0.001). Expenditures ranged from R$ 17,344.37 in patients with one complication up to R$ 104,596.52 in patients with five complications (p &lt; 0.001). Conclusions: The occurrence of complications during hospitalization for CABG significantly increases the costs of the procedure, but the magnitude of this increase depends on the type of complication developed, and higher expenses related to cardiovascular complications, infections and bleeding. With this information, managers can improve the allocation of resources to health.