cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.11997663
title: Physics-Based Design of Microstrip Magnetic Dipoles Using Cavity Model

description: Abstract This paper presents an efficient technique of microstrip magnetic dipoles design that explores the physics ruling the antenna behavior not restricting to parametric analyses in a full-wave simulation software. The proposed approach makes use of the cavity model whose parameters are progressively enhanced by using full-wave electromagnetic simulation data in a feedback scheme. A curve fitting problem is established to evaluate the mentioned parameters at each iteration. To exemplify the developed technique, a microstrip magnetic dipole operating at 2.44 GHz (ISM band) was synthesized and its prototype was manufactured and tested in an anechoic chamber. The design was ready in less than one hour and only three full-wave simulations were required. A good agreement between theoretical predictions and experimental results was also observed.
DOI: 10.6084/m9.figshare.11997663.v1
title: Physics-Based Design of Microstrip Magnetic Dipoles Using Cavity Model

description: Abstract This paper presents an efficient technique of microstrip magnetic dipoles design that explores the physics ruling the antenna behavior not restricting to parametric analyses in a full-wave simulation software. The proposed approach makes use of the cavity model whose parameters are progressively enhanced by using full-wave electromagnetic simulation data in a feedback scheme. A curve fitting problem is established to evaluate the mentioned parameters at each iteration. To exemplify the developed technique, a microstrip magnetic dipole operating at 2.44 GHz (ISM band) was synthesized and its prototype was manufactured and tested in an anechoic chamber. The design was ready in less than one hour and only three full-wave simulations were required. A good agreement between theoretical predictions and experimental results was also observed.
DOI: 10.6084/m9.figshare.11997666
title: Quality of pomegranate peel cultivar Valenciana as determined by different drying methods

description: Abstract The pomegranate fruit exhibits medicinal properties due to the nutraceutical characteristics, especially of its peel. The objective of this study was to analyze the influence of different drying methods on the physicochemical and biochemical characteristics of the pomegranate peel. The experiment was conducted in a completely randomized design in subdivided plots: 4 (full sun [SUN], drying chamber [DC] at 60 ± 2 °C, cold chamber at 10 °C and 60% relative humidity (RH) [CC], solar dryer [SD]) × 2 (presence or absence of 1% ascorbic acid [AA]). The analyzed variables were mass loss, index of drying heterogeneity (IHD), Hue internal (LI, CI, HI) and external (LE, CE, HE) angles, as well as Chroma, of the peel, and finally, total phenolic compound (TCFT) and flavonoid (TFLA) content. DC treatment led to the shortest drying time, followed by SUN and SD treatments. A reduction in IHD was observed with respect to time, which was more pronounced in DC treatment. CC treatment produced a more positive response both for LI and LE. TCFT and TFLA content produced from DC treatment presented an interaction effect, which was reduced by the application of AA. On the other hand, dehydration without the application of AA in the drying chamber or in full sun resulted in the best responses in TCFT and TFLA content.
DOI: 10.6084/m9.figshare.11997657
title: The Effect of the Increase in General Surgery Residency Openings in Brazil

description: Abstract: Introduction: In recent years, there has been an increase in the number of medical residency programs in all regions of Brazil, only in the last 4 years, from 2014 to 2018, there was an increase from 18,953 general spots offered for the first year of medical residency to 26,094, 37% more, this was also observed in General Surgery Residencies around Brazil. As a result, the number of general surgeons has increased substantially, from 12,430 in 2008 to 34,065 in 2018, an absolute percentage increase of 174%. These new surgeons are bringing with them their theoretical and practical knowledge already updated, regarding new techniques and surgical modalities. In this context, in the last 2 decades, video-assisted surgery has become the choice for numerous procedures in Brazil and in the World, considering its benefits for patients, such as less postoperative hospital stay and less metabolic response to surgical trauma, for example. The current study correlates the data between the increase in the number of spots in medical residency programs, related to the graduation of new surgeons in Brazil, to the increase of videolaparoscopic surgeries in the public health system. Methodology: Review and online analysis of the national electronic public health registry database - DATASUS. The most performed Surgeries in Brazil were chosen for our data analysis. Results: The results were divided into five geographically distributed areas in Brazil. At the end of the current study, the number of video-assisted surgeries increased by 233%, accompanied by a 63% increase in the number of medical residency openings and a 174% absolute increase in the number of new surgeons in Brazil at the same period. Conclusion: The current study showed that the increase in the number of video-assisted surgeries in the country is related to the exponential increase in the number of medical residency spots and, consequently, to the number of new graduated general surgeons. This increase occurs more and more in a context of videolaparoscopic techniques, revealing multiple benefits already recognized for patients. We could conclude, therefore, that the increase in the number of medical residencies in general surgery - which are increasingly teaching videolaparoscopic techniques - has contributed as a complementary factor to the increase in the number of video-assisted surgeries observed in all regions of Brazil.
DOI: 10.6084/m9.figshare.11997666.v1
title: Quality of pomegranate peel cultivar Valenciana as determined by different drying methods

description: Abstract The pomegranate fruit exhibits medicinal properties due to the nutraceutical characteristics, especially of its peel. The objective of this study was to analyze the influence of different drying methods on the physicochemical and biochemical characteristics of the pomegranate peel. The experiment was conducted in a completely randomized design in subdivided plots: 4 (full sun [SUN], drying chamber [DC] at 60 ± 2 °C, cold chamber at 10 °C and 60% relative humidity (RH) [CC], solar dryer [SD]) × 2 (presence or absence of 1% ascorbic acid [AA]). The analyzed variables were mass loss, index of drying heterogeneity (IHD), Hue internal (LI, CI, HI) and external (LE, CE, HE) angles, as well as Chroma, of the peel, and finally, total phenolic compound (TCFT) and flavonoid (TFLA) content. DC treatment led to the shortest drying time, followed by SUN and SD treatments. A reduction in IHD was observed with respect to time, which was more pronounced in DC treatment. CC treatment produced a more positive response both for LI and LE. TCFT and TFLA content produced from DC treatment presented an interaction effect, which was reduced by the application of AA. On the other hand, dehydration without the application of AA in the drying chamber or in full sun resulted in the best responses in TCFT and TFLA content.
DOI: 10.6084/m9.figshare.11997654
title: Web software to create thematic maps for precision agriculture

description: Abstract: The objective of this work was to develop and provide a free web application able to generate thematic maps. The initiative aims to incorporate the functionalities of the “Software para Definição de Unidades de Manejo” (SDUM) desktop application, which has proven to be suitable for working with thematic maps and management zones, but that was only available for desktop computers. The developed web application was tested with real data from two agricultural fields located in the state of Paraná, Brazil. Thematic maps of soil and plant characteristics relevant to precision agriculture were created through the following interpolation methods: inverse distance, moving average, and nearest neighbor. The obtained results show that the usage of this web tool allows identifying areas with the same behavior toward soil variables, making it possible for the user to have a better and more accurate vision of the area to be worked on and to identify possible causes of variation in productivity. Because it is installed in a server with on-demand features, the software has a satisfactory performance from a functional point of view and can be accessed from any web environment.
DOI: 10.6084/m9.figshare.11997657.v1
title: The Effect of the Increase in General Surgery Residency Openings in Brazil

description: Abstract: Introduction: In recent years, there has been an increase in the number of medical residency programs in all regions of Brazil, only in the last 4 years, from 2014 to 2018, there was an increase from 18,953 general spots offered for the first year of medical residency to 26,094, 37% more, this was also observed in General Surgery Residencies around Brazil. As a result, the number of general surgeons has increased substantially, from 12,430 in 2008 to 34,065 in 2018, an absolute percentage increase of 174%. These new surgeons are bringing with them their theoretical and practical knowledge already updated, regarding new techniques and surgical modalities. In this context, in the last 2 decades, video-assisted surgery has become the choice for numerous procedures in Brazil and in the World, considering its benefits for patients, such as less postoperative hospital stay and less metabolic response to surgical trauma, for example. The current study correlates the data between the increase in the number of spots in medical residency programs, related to the graduation of new surgeons in Brazil, to the increase of videolaparoscopic surgeries in the public health system. Methodology: Review and online analysis of the national electronic public health registry database - DATASUS. The most performed Surgeries in Brazil were chosen for our data analysis. Results: The results were divided into five geographically distributed areas in Brazil. At the end of the current study, the number of video-assisted surgeries increased by 233%, accompanied by a 63% increase in the number of medical residency openings and a 174% absolute increase in the number of new surgeons in Brazil at the same period. Conclusion: The current study showed that the increase in the number of video-assisted surgeries in the country is related to the exponential increase in the number of medical residency spots and, consequently, to the number of new graduated general surgeons. This increase occurs more and more in a context of videolaparoscopic techniques, revealing multiple benefits already recognized for patients. We could conclude, therefore, that the increase in the number of medical residencies in general surgery - which are increasingly teaching videolaparoscopic techniques - has contributed as a complementary factor to the increase in the number of video-assisted surgeries observed in all regions of Brazil.
DOI: 10.6084/m9.figshare.11997648
title: DESCRIPTION OF A NEW METHOD OF MEASURING THE PELVIC INCIDENCE ANGLE THROUGH COMPUTED TOMOGRAPHY

description: ABSTRACT Objective To describe a more accurate method for measuring the pelvic incidence angle using computed tomography, without the influence of the positioning of the pelvis in relation to the X-ray tube. Methods Thirteen CT scans of the lumbosacral region, abdomen or pelvis were randomly assessed, as all these exams include the sacrum and femoral heads. All the exams were performed in multichannel devices with six channels. The technique of overlapping images, already common in other musculoskeletal exams, such as TT-TG, was used. The centered sagittal cut of the left femoral head, the center of S1, and the right femoral head were used. From these, a fourth image was created, analogous to an X-ray of the pelvis, from which measurements were taken using the dedicated software. Results Of the thirteen exams, three were of the lumbar spine and 10 were of the total abdomen, six of them being of males.. The mean age was 56 years. The mean PI was 45°, ranging from 31 to 81 degrees. Among the women, the mean was 52° (31 to 81°) and among the men, 38° (32 to 46°). Conclusion CT can be used to calculate the PI, using the technique of overlapping images common to other musculoskeletal exams, such as TT-TG. Level of Evidence IIIB. Diagnostic study; Retrospective study.
DOI: 10.6084/m9.figshare.11997654.v1
title: Web software to create thematic maps for precision agriculture

description: Abstract: The objective of this work was to develop and provide a free web application able to generate thematic maps. The initiative aims to incorporate the functionalities of the “Software para Definição de Unidades de Manejo” (SDUM) desktop application, which has proven to be suitable for working with thematic maps and management zones, but that was only available for desktop computers. The developed web application was tested with real data from two agricultural fields located in the state of Paraná, Brazil. Thematic maps of soil and plant characteristics relevant to precision agriculture were created through the following interpolation methods: inverse distance, moving average, and nearest neighbor. The obtained results show that the usage of this web tool allows identifying areas with the same behavior toward soil variables, making it possible for the user to have a better and more accurate vision of the area to be worked on and to identify possible causes of variation in productivity. Because it is installed in a server with on-demand features, the software has a satisfactory performance from a functional point of view and can be accessed from any web environment.
DOI: 10.6084/m9.figshare.11997645
title: Study of fluoroquinolone biodegradability by using aerobic and anaerobic biomass

description: ABSTRACT Antibiotics, such as norfloxacin, are the most widely used drugs in medicine, with significant consumption in the world. By being chemically stable, most of the drug is excreted unchanged after administration, and is generally only partially removed in the sewage treatment plants (STPs). Thus, the efficiency of biological processes in the remediation of norfloxacin was investigated by the present work, verifying the removal mechanisms involved. Its objective was to verify the drug’s biodegradability and toxicity. In order to perform biodegradability tests, sludges were collected in Arrudas STP (Sabara, Minas Gerais) from the treatment processes with activated sludge, upflow anaerobic sludge blanket (UASB) reactors and anaerobic biodigester. Bench-scale reactors were assembled with acclimatized and non-acclimatized sludge. Samples had their biodegradability monitored by determination of total organic carbon and norfloxacin molar absorptivity by UV/Vis spectrophotometry. The toxicity was determined by tests with Aliivibrio fischeri. Among the used biomass, UASB reactors was the most efficient in removing norfloxacin (23%), followed by anaerobic biodigester (18%), and activated sludge (13%). Regarding ecotoxicity, the anaerobic degradation promoted the elimination of antibiotic toxicity, while with aerobic degradation, the effluents generated remained toxic.
DOI: 10.6084/m9.figshare.11997648.v1
title: DESCRIPTION OF A NEW METHOD OF MEASURING THE PELVIC INCIDENCE ANGLE THROUGH COMPUTED TOMOGRAPHY

description: ABSTRACT Objective To describe a more accurate method for measuring the pelvic incidence angle using computed tomography, without the influence of the positioning of the pelvis in relation to the X-ray tube. Methods Thirteen CT scans of the lumbosacral region, abdomen or pelvis were randomly assessed, as all these exams include the sacrum and femoral heads. All the exams were performed in multichannel devices with six channels. The technique of overlapping images, already common in other musculoskeletal exams, such as TT-TG, was used. The centered sagittal cut of the left femoral head, the center of S1, and the right femoral head were used. From these, a fourth image was created, analogous to an X-ray of the pelvis, from which measurements were taken using the dedicated software. Results Of the thirteen exams, three were of the lumbar spine and 10 were of the total abdomen, six of them being of males.. The mean age was 56 years. The mean PI was 45°, ranging from 31 to 81 degrees. Among the women, the mean was 52° (31 to 81°) and among the men, 38° (32 to 46°). Conclusion CT can be used to calculate the PI, using the technique of overlapping images common to other musculoskeletal exams, such as TT-TG. Level of Evidence IIIB. Diagnostic study; Retrospective study.
DOI: 10.6084/m9.figshare.11997645.v1
title: Study of fluoroquinolone biodegradability by using aerobic and anaerobic biomass

description: ABSTRACT Antibiotics, such as norfloxacin, are the most widely used drugs in medicine, with significant consumption in the world. By being chemically stable, most of the drug is excreted unchanged after administration, and is generally only partially removed in the sewage treatment plants (STPs). Thus, the efficiency of biological processes in the remediation of norfloxacin was investigated by the present work, verifying the removal mechanisms involved. Its objective was to verify the drug’s biodegradability and toxicity. In order to perform biodegradability tests, sludges were collected in Arrudas STP (Sabara, Minas Gerais) from the treatment processes with activated sludge, upflow anaerobic sludge blanket (UASB) reactors and anaerobic biodigester. Bench-scale reactors were assembled with acclimatized and non-acclimatized sludge. Samples had their biodegradability monitored by determination of total organic carbon and norfloxacin molar absorptivity by UV/Vis spectrophotometry. The toxicity was determined by tests with Aliivibrio fischeri. Among the used biomass, UASB reactors was the most efficient in removing norfloxacin (23%), followed by anaerobic biodigester (18%), and activated sludge (13%). Regarding ecotoxicity, the anaerobic degradation promoted the elimination of antibiotic toxicity, while with aerobic degradation, the effluents generated remained toxic.
DOI: 10.6084/m9.figshare.11997630
title: Metabolic capacity of heterotrophic bacteria of activated sludge systems in aerobic and anoxic environments

description: ABSTRACT For projects of activated sludge systems in countries with high temperatures such as Brazil, the introduction of one or more anoxic reactors is suggested, since nitrification becomes an almost inevitable factor. Denitrification is a process able to reduce aeration costs by up to 20%, recover the alkalinity lost with nitrification and still remove organic matter and nitrogen. This study aimed to evaluate the metabolic capacity of heterotrophic bacteria of these systems in aerobic and anoxic environment via nitrate and nitrite. Two configurations were compared for the tests: Bardenpho and University of Cape Town (UCT). The results showed significant viability of denitrification via nitrate, as the average rates obtained from oxygen consumption and oxygen equivalents were similar for both systems, indicating that beyond the removal of nitrogen, organic matter is removed with the same efficiency as an aerobic reactor enabling cost reduction with aeration due to the possibility of limiting it only to the nitrification process. However, denitrification by the use of nitrite showed a reduction in the ability of removal of organic matter by 60%, which may lead to a doubtful advantage in the option of a simultaneous nitrification and denitrification process, even if it presents minor oxygen demand. However, it may present exceptions, such as when there is also the claim of phosphorus removal via nitrite by phosphorus-accumulating organisms that may overcome the weakness of this rate.
DOI: 10.6084/m9.figshare.11997627
title: CFD simulation and PIV validation of the gas/liquid behavior in an UASB reactor

description: ABSTRACT As the world population increases, the need to develop more efficient wastewater treatment systems requires the use of new technologies. Software aided project and optimization of bioreactors and bioprocesses have become a matter of interest in recent years, especially due to the advance in the state-of-the-art of computational resources. This work aimed to perform gas/liquid numerical simulations using the Fluent 16.2 software and to validate this model through Particle Image Velocimetry (PIV) and shadow imaging techniques. Eulerian-Eulerian, laminar, tridimensional and transient simulations were carried out. The results for the mass imbalance for the gas and liquid phases, gas volumetric fraction, gas velocity, bubble size, liquid magnitude and upflow velocity and the velocity profiles for the liquid phase were successfully validated against experimental data. Concerning the dispersed phase, it was found a difference of 4.37% for the gas volumetric fraction between experiments and simulations. Simulated results showed a difference for the bubble mean velocity of 1.73% when compared with shadow imaging results. No coalescence was observed along the experiments, and the flow regime was characterized as dispersed bubble flow. Regarding the liquid phase, it was found a difference of 3.2% for the mean velocity, between simulated and PIV results. Simulated and experimental velocity profiles showed a better agreement at the center of the reactor. Some differences were observed in those profiles, due to geometry simplifications assumed in order to get a better mesh. Considering the good agreement between simulation and experiments, the model was considered validated.
DOI: 10.6084/m9.figshare.11997630.v1
title: Metabolic capacity of heterotrophic bacteria of activated sludge systems in aerobic and anoxic environments

description: ABSTRACT For projects of activated sludge systems in countries with high temperatures such as Brazil, the introduction of one or more anoxic reactors is suggested, since nitrification becomes an almost inevitable factor. Denitrification is a process able to reduce aeration costs by up to 20%, recover the alkalinity lost with nitrification and still remove organic matter and nitrogen. This study aimed to evaluate the metabolic capacity of heterotrophic bacteria of these systems in aerobic and anoxic environment via nitrate and nitrite. Two configurations were compared for the tests: Bardenpho and University of Cape Town (UCT). The results showed significant viability of denitrification via nitrate, as the average rates obtained from oxygen consumption and oxygen equivalents were similar for both systems, indicating that beyond the removal of nitrogen, organic matter is removed with the same efficiency as an aerobic reactor enabling cost reduction with aeration due to the possibility of limiting it only to the nitrification process. However, denitrification by the use of nitrite showed a reduction in the ability of removal of organic matter by 60%, which may lead to a doubtful advantage in the option of a simultaneous nitrification and denitrification process, even if it presents minor oxygen demand. However, it may present exceptions, such as when there is also the claim of phosphorus removal via nitrite by phosphorus-accumulating organisms that may overcome the weakness of this rate.