cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7511678
title: Water quality change of rivers during rainy events in a watershed with different land uses in Southern Brazil

description: ABSTRACT High frequency monitoring in environmental studies is increasingly being used due to the availability of equipment and quick response. With high frequency time series, it is possible to extract short-term responses during and after a rain event, which is not captured by conventional monitoring. The aim of this study is to evaluate the superficial water quality change of a stream in a preserved area in Atlantic Forest by short-term data (hour interval). The Cubatão do Sul watershed is located in the Central Coast region of the state of Santa Catarina in Brazil. Rain height and water quality parameters were monitored using rain gauge and multiparameter probes. Two fluviometric sections were also monitored — one in Vargem do Braço stream (FS1), which is mainly native forest (dense ombrophilous forest), and the other in Cubatão do Sul River (FS2), which is influenced by urban, agricultural and sand extraction uses. The temperature and nitrate ion permanency curve in FS1 showed slightly lower values during rainy events, but an opposite behavior was observed for turbidity. On the other hand, the permanency curves during rainy periods of FS2 presented lower conductivity and ammonium ion. When the dry and rainy periods were statistically compared, there was a significant difference for temperature, conductivity, pH, nitrate ion, turbidity and dissolved oxygen for FS1, and temperature, conductivity and turbidity for FS2. The water quality of the Cubatão do Sul watershed is influenced by stream flow and has a short-term time response considering the rain events. The oscillation of the monitored parameters between two periods, dry and rainy, is smaller in native forest than urban and rural land use.
DOI: 10.6084/m9.figshare.7511678.v1
title: Water quality change of rivers during rainy events in a watershed with different land uses in Southern Brazil

description: ABSTRACT High frequency monitoring in environmental studies is increasingly being used due to the availability of equipment and quick response. With high frequency time series, it is possible to extract short-term responses during and after a rain event, which is not captured by conventional monitoring. The aim of this study is to evaluate the superficial water quality change of a stream in a preserved area in Atlantic Forest by short-term data (hour interval). The Cubatão do Sul watershed is located in the Central Coast region of the state of Santa Catarina in Brazil. Rain height and water quality parameters were monitored using rain gauge and multiparameter probes. Two fluviometric sections were also monitored — one in Vargem do Braço stream (FS1), which is mainly native forest (dense ombrophilous forest), and the other in Cubatão do Sul River (FS2), which is influenced by urban, agricultural and sand extraction uses. The temperature and nitrate ion permanency curve in FS1 showed slightly lower values during rainy events, but an opposite behavior was observed for turbidity. On the other hand, the permanency curves during rainy periods of FS2 presented lower conductivity and ammonium ion. When the dry and rainy periods were statistically compared, there was a significant difference for temperature, conductivity, pH, nitrate ion, turbidity and dissolved oxygen for FS1, and temperature, conductivity and turbidity for FS2. The water quality of the Cubatão do Sul watershed is influenced by stream flow and has a short-term time response considering the rain events. The oscillation of the monitored parameters between two periods, dry and rainy, is smaller in native forest than urban and rural land use.
DOI: 10.6084/m9.figshare.7513727
title: Benthic invertebrates: relationship between the fauna structure and mesohabitat features

description: Abstract The formation of different mesohabitats, such as pools, riffles and runs, is common along the courses of stream ecosystems, and these are frequently accompanied by changes in the benthic fauna structure. In this paper, we analyzed the fauna of benthic invertebrates in riffles and runs of a stretch of the Capivara River (Middle Tietê River Basin). The analyses of the environmental characteristics and samplings of the fauna were performed in three riffles and three runs (five replicates in each) within a month of the rainy season. The mesohabitats differed with respect to the higher percentage of cobble in the runs and greater depth, current and number of boulders in the riffles. Of the total of 57 Operational Taxonomic Unities (OTU's) sampled, 75% were common to both mesohabitats (Morisita Similarity = 0.86). When the percentage of abundance by mesohabitat was analyzed, spatial similarity remained with Hexapoda (&gt; 80%, mainly represented by Ephemeroptera, Diptera and Trichoptera) and Annelida (10%) standing out in abundance. The exploratory analysis (cluster and NMDS) found high spatial similarity, but the results of the Analysis of Similarity (ANOSIM) indicated a significant difference between the mesohabitats (p &lt;0.1%), both when the total OTU's were analyzed or when removing the rare ones. Five groups contributed more greatly to the average dissimilarity between mesohabitats: Simulium and Baetodes were more abundant in riffles, while Traveryphes, Hagenulopsis and Macrelmis were more abundant in runs. Thus, the results of ANOSIM stressed the importance of refining identification for a more precise interpretation of the relationship between fauna and habitat structure.
DOI: 10.6084/m9.figshare.7516784
title: Prevalence of metabolic syndrome in pre- and postmenopausal women

description: ABSTRACT Objective The objective of this study was to determine the prevalence of metabolic syndrome (MS) and its components among pre- and postmenopausal women, as well as the association between menopausal status and MS. Materials and methods A retrospective study was conducted at a reference cardiology outpatient clinic in a city located in Northwestern Paraná State, Brazil. A total of 958 medical records of symptomatic climacteric women evaluated between 2010 and 2014 were analyzed. The study consisted of two groups: pre- and post-menopausal women. MS was characterized according to the criteria of the National Cholesterol Education Program’s Adult Treatment Panel III – NCEP-ATP III-2005. Results MS was observed in 18.5% of the total study population; 9.4% of the premenopausal women and 22.2% of the postmenopausal women displayed MS, corresponding to a relative risk of 2.75. In addition, the frequency of MS increased with age. Regarding the components of MS, postmenopausal women were more likely to have high density lipoprotein (HDL-C) levels &lt; 50 mg/dL; systolic blood pressure (SBP) values ≥ 130 mmHg or diastolic blood pressure (DBP) values ≥ 85 mmHg; and fasting glucose levels ≥ 100 mg/dL. Conclusion MS was more prevalent among postmenopausal women than among premenopausal women.
DOI: 10.6084/m9.figshare.7519475
title: Characterization of basic oxygen furnace slag and granite waste mixtures to Portland cement production

description: Abstract The aim of this paper is to analyze mixtures of basic oxygen furnace slag and granite waste in order to produce Portland cement. X-ray patterns were carried out in both the basic oxygen furnace slag and granite waste. Then, mixtures were prepared to obtain the binary basicity of 0.5, 0.9 and 1.2. The mixtures were melted at 1500ºC. Two cooling steps were performed. The first cooling step was accomplished inside the furnace in order to determine the phases formed during the melting step. The second cooling process was carried out in water in order to obtain an amorphous structure. Images via scanning electrons microscopy and EDS spectrum were obtained for the mixtures cooling in water. The results showed that basic oxygen furnace slag contains a higher percent of CaO. A binary basicity of 4.6 was determined. The granite waste appeared as mainly a quartz phase. During the slow cooling step, silicates (akermanite and gehlenite) were formed. On the fast cooling step, amorphous structures were obtained. In addition, images obtained via scanning electrons microscopy showed glass structures. EDS spectrum indicated that the glass structures were composed for calcium silicates. Thus, the results suggest that mixtures using basic oxygen furnace slag and granite waste presented characteristics desirable for Portland cement production.
DOI: 10.6084/m9.figshare.7519481.v1
title: Analysis of precipitate density of an aluminium alloy by TEM and AFM

description: Abstract The quantification of nanometric precipitates in Al-Zn-Mg-Cu alloys has been performed by a series of experimental techniques. Especially in the AA7050 alloy, after ageing heat treatment, the particles responsible for the hardening become very thin. Typically, these precipitates of nanometric sizes are mainly characterized by transmission electron microscopy (TEM), which in this particular case, requires a very meticulous preparation. This study investigated a possible alternative quantification of the precipitates by atomic force microscopy (AFM) to complement the technique by TEM. For this, three conditions for heat treatment of an aged aluminium alloy AA7050 were therefore chosen to produce different density and sizes of precipitates. The experimental results showed that the AFM technique proved to be a valid qualitative tool and may complement the results obtained by TEM an exploratory analysis for the microstructures.
DOI: 10.6084/m9.figshare.7676654
title: Impact of regulations on innovation in the field of medical devices

description: Abstract Introduction The regulatory framework and standardized assay methods for classical biomaterials and implantable devices are harmonized at the international level, based on the risk assessment. However, innovative products need the development of more appropriate assay methods and streamline regulatory and scientific evaluation to encourage innovation and ensure more expedite delivery of novel, safe and effective innovative medical devices to patients. The aim of this work is to review the latest focus on the conflicting issues that are involved in the evaluation of recently developed biomaterials and medical devices. Methods This paper is based on a review of the relevant academic literature regarding the field of medical devices over the last ten years (2008-2017). A systematic search was conducted in Medline data base for articles using “medical devices” + “regulations” + “innovation” in the title or abstract. Discussion There is the widespread perception that research and marketing of innovative medical devices are moving swifter, even more so than the issues concerning evaluation methods and regulations. Collaboration among all the stakeholders could contribute to overcome the existing problems in medical device innovation.
DOI: 10.6084/m9.figshare.11839506
title: The Government as Shareholder and Principal-Principal Conflicts in the Brazilian Electric Power Industry

description: ABSTRACT Considering that principal-principal conflicts in companies under mixed public-private ownership are substantially different from the typical agency conflict model, this paper’s objective is to analyze principal-principal conflicts in mixed ownership companies in the Brazilian electric power industry. In order to expand understanding of the phenomenon which we are studying, we have integrated the assumptions that underlie agency theory and institutional theory, using a qualitative approach and collecting data during semi structured interviews with companies’ board members. Data was analyzed and interpreted as per Bardin (2006), with the aid of ATLAS®ti software. Our main findings suggest that while a government stake in a firm’s ownership structure can provide a useful channel for the government to seek support and resources, in counterpoint, it can also create distortions and uncertainties, and exacerbate principal-principal conflicts. The development of stronger institutions and corporate governance could bring about useful options for providing checks and balances and, in the final analysis, mitigate principal-principal conflict. The article contributes to the literature by providing additional elements that are not available in public reports. Analysis of the conflict between principal and principal, together with theoretical integration, seek to broaden the understanding of this theme.
DOI: 10.6084/m9.figshare.7516784.v1
title: Prevalence of metabolic syndrome in pre- and postmenopausal women

description: ABSTRACT Objective The objective of this study was to determine the prevalence of metabolic syndrome (MS) and its components among pre- and postmenopausal women, as well as the association between menopausal status and MS. Materials and methods A retrospective study was conducted at a reference cardiology outpatient clinic in a city located in Northwestern Paraná State, Brazil. A total of 958 medical records of symptomatic climacteric women evaluated between 2010 and 2014 were analyzed. The study consisted of two groups: pre- and post-menopausal women. MS was characterized according to the criteria of the National Cholesterol Education Program’s Adult Treatment Panel III – NCEP-ATP III-2005. Results MS was observed in 18.5% of the total study population; 9.4% of the premenopausal women and 22.2% of the postmenopausal women displayed MS, corresponding to a relative risk of 2.75. In addition, the frequency of MS increased with age. Regarding the components of MS, postmenopausal women were more likely to have high density lipoprotein (HDL-C) levels &lt; 50 mg/dL; systolic blood pressure (SBP) values ≥ 130 mmHg or diastolic blood pressure (DBP) values ≥ 85 mmHg; and fasting glucose levels ≥ 100 mg/dL. Conclusion MS was more prevalent among postmenopausal women than among premenopausal women.
DOI: 10.6084/m9.figshare.7519475.v1
title: Characterization of basic oxygen furnace slag and granite waste mixtures to Portland cement production

description: Abstract The aim of this paper is to analyze mixtures of basic oxygen furnace slag and granite waste in order to produce Portland cement. X-ray patterns were carried out in both the basic oxygen furnace slag and granite waste. Then, mixtures were prepared to obtain the binary basicity of 0.5, 0.9 and 1.2. The mixtures were melted at 1500ºC. Two cooling steps were performed. The first cooling step was accomplished inside the furnace in order to determine the phases formed during the melting step. The second cooling process was carried out in water in order to obtain an amorphous structure. Images via scanning electrons microscopy and EDS spectrum were obtained for the mixtures cooling in water. The results showed that basic oxygen furnace slag contains a higher percent of CaO. A binary basicity of 4.6 was determined. The granite waste appeared as mainly a quartz phase. During the slow cooling step, silicates (akermanite and gehlenite) were formed. On the fast cooling step, amorphous structures were obtained. In addition, images obtained via scanning electrons microscopy showed glass structures. EDS spectrum indicated that the glass structures were composed for calcium silicates. Thus, the results suggest that mixtures using basic oxygen furnace slag and granite waste presented characteristics desirable for Portland cement production.
DOI: 10.6084/m9.figshare.7676654.v1
title: Impact of regulations on innovation in the field of medical devices

description: Abstract Introduction The regulatory framework and standardized assay methods for classical biomaterials and implantable devices are harmonized at the international level, based on the risk assessment. However, innovative products need the development of more appropriate assay methods and streamline regulatory and scientific evaluation to encourage innovation and ensure more expedite delivery of novel, safe and effective innovative medical devices to patients. The aim of this work is to review the latest focus on the conflicting issues that are involved in the evaluation of recently developed biomaterials and medical devices. Methods This paper is based on a review of the relevant academic literature regarding the field of medical devices over the last ten years (2008-2017). A systematic search was conducted in Medline data base for articles using “medical devices” + “regulations” + “innovation” in the title or abstract. Discussion There is the widespread perception that research and marketing of innovative medical devices are moving swifter, even more so than the issues concerning evaluation methods and regulations. Collaboration among all the stakeholders could contribute to overcome the existing problems in medical device innovation.
DOI: 10.6084/m9.figshare.11839506.v1
title: The Government as Shareholder and Principal-Principal Conflicts in the Brazilian Electric Power Industry

description: ABSTRACT Considering that principal-principal conflicts in companies under mixed public-private ownership are substantially different from the typical agency conflict model, this paper’s objective is to analyze principal-principal conflicts in mixed ownership companies in the Brazilian electric power industry. In order to expand understanding of the phenomenon which we are studying, we have integrated the assumptions that underlie agency theory and institutional theory, using a qualitative approach and collecting data during semi structured interviews with companies’ board members. Data was analyzed and interpreted as per Bardin (2006), with the aid of ATLAS®ti software. Our main findings suggest that while a government stake in a firm’s ownership structure can provide a useful channel for the government to seek support and resources, in counterpoint, it can also create distortions and uncertainties, and exacerbate principal-principal conflicts. The development of stronger institutions and corporate governance could bring about useful options for providing checks and balances and, in the final analysis, mitigate principal-principal conflict. The article contributes to the literature by providing additional elements that are not available in public reports. Analysis of the conflict between principal and principal, together with theoretical integration, seek to broaden the understanding of this theme.
DOI: 10.6084/m9.figshare.7516574
title: GROWTH EVOLUTION OF CACTUS FORAGE DRIP IRRIGATED

description: ABSTRACT: The objective was to evaluate the growth of clones of forage cactus, subjected to different conditions of water availability in the Brazilian Semiarid, during a year of climate anomaly (biennium 2012-2013). The experiment was carried out in the first production year of the second crop cycle (March 2012 to February 2013), in the district of Serra Talhada, State of Pernambuco. The experiment was carried out in a randomized block design using a factorial arrangement 3x3 with three replications, being used three intervals of application of a fixed irrigation depth (7.5 mm), (7, 14 and 28 days), and three forage cactus clones (IPA: IPA Sertânia; MIU: Míuda and, OEM: Orelha de Elefante Mexicana). Eight biometric campaigns were performed during the experiment period for morphological analysis of the plants and cladodes along the time. It was found that water availability conditions showed no significant influence (P&gt;0.05) on the majority of the absolute and relative values of the growth variables of the three forage cactus clones. However, when comparisons were performed among different clones, regardless of the water availability conditions, it was observed that, in terms of absolute values, the OEM had the highest means, differing only from the MIU clone. Regarding evaluations over time, there were increased growth rates in the last months of the crop cycle because of the occurrence of rainfall, which in conjunction with the application of the irrigation treatments promoted the best biometric increments for the OEM and IPA Sertânia clones.
DOI: 10.6084/m9.figshare.7516574.v1
title: GROWTH EVOLUTION OF CACTUS FORAGE DRIP IRRIGATED

description: ABSTRACT: The objective was to evaluate the growth of clones of forage cactus, subjected to different conditions of water availability in the Brazilian Semiarid, during a year of climate anomaly (biennium 2012-2013). The experiment was carried out in the first production year of the second crop cycle (March 2012 to February 2013), in the district of Serra Talhada, State of Pernambuco. The experiment was carried out in a randomized block design using a factorial arrangement 3x3 with three replications, being used three intervals of application of a fixed irrigation depth (7.5 mm), (7, 14 and 28 days), and three forage cactus clones (IPA: IPA Sertânia; MIU: Míuda and, OEM: Orelha de Elefante Mexicana). Eight biometric campaigns were performed during the experiment period for morphological analysis of the plants and cladodes along the time. It was found that water availability conditions showed no significant influence (P&gt;0.05) on the majority of the absolute and relative values of the growth variables of the three forage cactus clones. However, when comparisons were performed among different clones, regardless of the water availability conditions, it was observed that, in terms of absolute values, the OEM had the highest means, differing only from the MIU clone. Regarding evaluations over time, there were increased growth rates in the last months of the crop cycle because of the occurrence of rainfall, which in conjunction with the application of the irrigation treatments promoted the best biometric increments for the OEM and IPA Sertânia clones.
DOI: 10.6084/m9.figshare.8226809
title: Between Individual Decisions and Collegiate Deliberations: Deciding How To Decide, Influencing the Outcome

description: Abstract How does the institutional design of the Brazilian Supreme Court (STF) interfere in the decision-making process of the conflicts that are submitted to it? STF’s Justices, as individually responsible of each proceeding in progress, can strategically decide through available procedural resources what and when to bring them to trial individually or collectively. This article inserts itself in this debate to question the independence of its Justices before the other political actors, but also before (or against) their peers, considering the possibilities of interaction of strategic models to the Brazilian case, before the constitutional, legal and regimental rules that establish the performance of the members of the Court. The general hypothesis is that the normative design of the Court assures multiple options for magistrates in the conduct of judicial proceedings, promoting strategies aimed at maximizing the winning chances of their preferences, as well as reducing their respective decision costs.
DOI: 10.6084/m9.figshare.8226809.v1
title: Between Individual Decisions and Collegiate Deliberations: Deciding How To Decide, Influencing the Outcome

description: Abstract How does the institutional design of the Brazilian Supreme Court (STF) interfere in the decision-making process of the conflicts that are submitted to it? STF’s Justices, as individually responsible of each proceeding in progress, can strategically decide through available procedural resources what and when to bring them to trial individually or collectively. This article inserts itself in this debate to question the independence of its Justices before the other political actors, but also before (or against) their peers, considering the possibilities of interaction of strategic models to the Brazilian case, before the constitutional, legal and regimental rules that establish the performance of the members of the Court. The general hypothesis is that the normative design of the Court assures multiple options for magistrates in the conduct of judicial proceedings, promoting strategies aimed at maximizing the winning chances of their preferences, as well as reducing their respective decision costs.