cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.6992753
title: Effect of nitrogen doses on the occurrence of postharvest diseases in strawberry

description: ABSTRACT This study evaluated the effect of nitrogen doses on postharvest diseases of strawberry cultivars Camino Real, Festival and Oso Grande. The nitrogen in urea formulation was evaluated at the recommended dose (100%) based on the official recommendation to the culture, and 3 lower doses (83, 67 and 50% of recommended), considering the fertilization at planting and cover applications. Fruits were harvested and weighed at 75% of its surface with a bright red color. Twelve fruits per plot were sampled in 3 collections from the second flowering and assessed for disease incidence during five days of storage at 25°C and 85% relative humidity. The identification of disease was made daily, based on symptoms and pathogen signs. There was no effect of nitrogen doses on yield and incidence of postharvest diseases, expressed as area under the disease progress curve (AUDPC). Increased average production was observed in cultivars Festival and Oso Grand. The overall incidence of disease among the cultivars did not differ significantly. Gray mold was the main disease, affecting more than 30% of fruits, followed by Rhizopus and yeast rot.
DOI: 10.6084/m9.figshare.6992753.v1
title: Effect of nitrogen doses on the occurrence of postharvest diseases in strawberry

description: ABSTRACT This study evaluated the effect of nitrogen doses on postharvest diseases of strawberry cultivars Camino Real, Festival and Oso Grande. The nitrogen in urea formulation was evaluated at the recommended dose (100%) based on the official recommendation to the culture, and 3 lower doses (83, 67 and 50% of recommended), considering the fertilization at planting and cover applications. Fruits were harvested and weighed at 75% of its surface with a bright red color. Twelve fruits per plot were sampled in 3 collections from the second flowering and assessed for disease incidence during five days of storage at 25°C and 85% relative humidity. The identification of disease was made daily, based on symptoms and pathogen signs. There was no effect of nitrogen doses on yield and incidence of postharvest diseases, expressed as area under the disease progress curve (AUDPC). Increased average production was observed in cultivars Festival and Oso Grand. The overall incidence of disease among the cultivars did not differ significantly. Gray mold was the main disease, affecting more than 30% of fruits, followed by Rhizopus and yeast rot.
DOI: 10.6084/m9.figshare.6992747
title: Influence of polymeric matrix on the physical and chemical properties of experimental composites

description: Nowadays, the main reasons for replacement of resin-based composite restorations are fracture or problems with the integrity of their interface, such as marginal staining, microleakage, or secondary caries. The aim of the present study was to evaluate the influence of the organic matrix on polymerization stress (PS), degree of conversion (DC), elastic modulus (E), flexural strength (FS), Knoop hardness (KHN), sorption (SP), and solubility (SL). In order to obtain a material which combines better mechanical properties with lower PS, seven experimental composites were prepared using BisGMA to TEGDMA molar ratios of 2:8, 3:7, 4:6, 5:5, 6:4, 7:3 and 8:2 and 40% of silica. PS was obtained in a universal testing machine, using acrylic as bonding substrate. DC was determined using Fourier Transform Raman spectroscopy. E and FS were obtained by the three-point bending test. KHN was measured by a microindentation test using a load of 25 g for 30 s. SP and SL were assessed according to ISO 4049. The data were submitted to one-way ANOVA. The increase in BisGMA concentration resulted in the decrease of PS, DC, E, FS and KHN. However, it did not change the SP and SL values. FS, E and KHN showed a strong and direct relationship with the DC of the materials. The composite material with a BisGMA to TEGDMA molar ratio of 1:1 was the one with better mechanical properties and lower PS.
DOI: 10.6084/m9.figshare.6992750
title: Digital panoramic radiography for diagnosis of the temporomandibular joint: CBCT as the gold standard

description: Three-dimensional imaging modalities have been reported to be more accurate than panoramic radiographs (PR) for the assessment of bone components of the temporomandibular joint (TMJ). No exact prior information is available that demonstrates which specific limitations occur in terms of TMJ diagnosis when using PR for this purpose. This study aimed to assess the clinical validity of digital panoramic radiography (DPR) when diagnosing morphological disorders of the TMJ using cone-beam computed tomography (CBCT) images as the gold standard. A sample composed of TMJ images (N = 848), including 212 DPR and 212 CBCT images obtained from the same patient, was used to assess any morphological changes in the TMJ. Four appraisers diagnosed all of the DPR images, whereas the CBCT images were used to establish the gold standard. The reliability of each appraiser’s response pattern was analyzed using the Kappa test (κ), and diagnostic tests were performed to assess each appraiser’s performance using a significance level setting of 5% (α = 0.05). Reliability of each appraiser’s response pattern compared to the gold standard ranged from a slight-to-moderate agreement (0.18 ≤ κ ≤ 0.45); and among the different appraisers, the response pattern showed a fair agreement (0.22 ≤ κ ≤ 0.39). Diagnostic tests showed a wide range among the different possible morphological changes diagnosed. DPR does not have validity when diagnosing morphological changes in the TMJ; it underestimates the radiological findings with higher prevalence, and thus, it cannot be used effectively as a diagnostic tool for bone components within this region.
DOI: 10.6084/m9.figshare.6992750.v1
title: Digital panoramic radiography for diagnosis of the temporomandibular joint: CBCT as the gold standard

description: Three-dimensional imaging modalities have been reported to be more accurate than panoramic radiographs (PR) for the assessment of bone components of the temporomandibular joint (TMJ). No exact prior information is available that demonstrates which specific limitations occur in terms of TMJ diagnosis when using PR for this purpose. This study aimed to assess the clinical validity of digital panoramic radiography (DPR) when diagnosing morphological disorders of the TMJ using cone-beam computed tomography (CBCT) images as the gold standard. A sample composed of TMJ images (N = 848), including 212 DPR and 212 CBCT images obtained from the same patient, was used to assess any morphological changes in the TMJ. Four appraisers diagnosed all of the DPR images, whereas the CBCT images were used to establish the gold standard. The reliability of each appraiser’s response pattern was analyzed using the Kappa test (κ), and diagnostic tests were performed to assess each appraiser’s performance using a significance level setting of 5% (α = 0.05). Reliability of each appraiser’s response pattern compared to the gold standard ranged from a slight-to-moderate agreement (0.18 ≤ κ ≤ 0.45); and among the different appraisers, the response pattern showed a fair agreement (0.22 ≤ κ ≤ 0.39). Diagnostic tests showed a wide range among the different possible morphological changes diagnosed. DPR does not have validity when diagnosing morphological changes in the TMJ; it underestimates the radiological findings with higher prevalence, and thus, it cannot be used effectively as a diagnostic tool for bone components within this region.
DOI: 10.6084/m9.figshare.6992747.v1
title: Influence of polymeric matrix on the physical and chemical properties of experimental composites

description: Nowadays, the main reasons for replacement of resin-based composite restorations are fracture or problems with the integrity of their interface, such as marginal staining, microleakage, or secondary caries. The aim of the present study was to evaluate the influence of the organic matrix on polymerization stress (PS), degree of conversion (DC), elastic modulus (E), flexural strength (FS), Knoop hardness (KHN), sorption (SP), and solubility (SL). In order to obtain a material which combines better mechanical properties with lower PS, seven experimental composites were prepared using BisGMA to TEGDMA molar ratios of 2:8, 3:7, 4:6, 5:5, 6:4, 7:3 and 8:2 and 40% of silica. PS was obtained in a universal testing machine, using acrylic as bonding substrate. DC was determined using Fourier Transform Raman spectroscopy. E and FS were obtained by the three-point bending test. KHN was measured by a microindentation test using a load of 25 g for 30 s. SP and SL were assessed according to ISO 4049. The data were submitted to one-way ANOVA. The increase in BisGMA concentration resulted in the decrease of PS, DC, E, FS and KHN. However, it did not change the SP and SL values. FS, E and KHN showed a strong and direct relationship with the DC of the materials. The composite material with a BisGMA to TEGDMA molar ratio of 1:1 was the one with better mechanical properties and lower PS.
DOI: 10.6084/m9.figshare.6992741
title: Possible ways for Public Health Surveillance practices evaluation

description: Abstract This is an evaluative and qualitative study that proposes to investigate self-assessment evaluation as a device to analyze Health Surveillance practices through a questionnaire built by researchers, adapted from the Self-Assessment of Improved Access and Primary Care Quality (AMAQ) and available on the FORMSUS platform. Forty-one Health Surveillance workers and managers of a large municipality from São Paulo State evaluated the realms of “management”, “teamwork” and their respective sub-realms. Two categories were created to analyze the results: “Management” and “Team” in dialogue with references from Management, Evaluation and Health Surveillance. Most “management” and “teamwork” sub-realms were deemed satisfactory. Self-assessment evaluation through an applied evaluation tool was shown to be a powerful resource for the analysis of Health Surveillance practices in combination with other devices adopted by the Unified Health System (SUS). Unlike usual evaluation processes guided by quantitative markers, this self-assessable evaluative process included subjects and enabled the possibility of incorporating a new look at itself to the way Health Surveillance is carried out and support future management contracts between workers and managers.
DOI: 10.6084/m9.figshare.6992741.v1
title: Possible ways for Public Health Surveillance practices evaluation

description: Abstract This is an evaluative and qualitative study that proposes to investigate self-assessment evaluation as a device to analyze Health Surveillance practices through a questionnaire built by researchers, adapted from the Self-Assessment of Improved Access and Primary Care Quality (AMAQ) and available on the FORMSUS platform. Forty-one Health Surveillance workers and managers of a large municipality from São Paulo State evaluated the realms of “management”, “teamwork” and their respective sub-realms. Two categories were created to analyze the results: “Management” and “Team” in dialogue with references from Management, Evaluation and Health Surveillance. Most “management” and “teamwork” sub-realms were deemed satisfactory. Self-assessment evaluation through an applied evaluation tool was shown to be a powerful resource for the analysis of Health Surveillance practices in combination with other devices adopted by the Unified Health System (SUS). Unlike usual evaluation processes guided by quantitative markers, this self-assessable evaluative process included subjects and enabled the possibility of incorporating a new look at itself to the way Health Surveillance is carried out and support future management contracts between workers and managers.
DOI: 10.6084/m9.figshare.6992723
title: Suppressive effects on weeds and dry matter yields of cover crops

description: Abstract: The objective of this work was to evaluate the dry matter yield of cover crops and their suppressive effects on weeds. The experiment was carried out during three years in a cerrado area of the state of Goiás, Brazil, and consisted of 16 treatments with fallow and cover crops cultivated in single cropping and intercropping. Fallow allowed high weed infestation. Cover crops affected the composition of weeds, which showed greater diversity in fallow, followed by the Pennisetum glaucum 'BRS 1501' and Cajanus cajan crops. In the average of the three experimental years, the highest dry matter yield was observed for the treatments Panicum maximum (10,857 kg ha-1), Urochloa brizantha 'Piatã' (11,437 kg ha-1), U. ruziziensis (9,463 kg ha-1), and U. ruziziensis intercropped with Crotalaria spectabilis (9,167 kg ha-1), which prevented weed infestation. Pennisetum glaucum 'BRS 1501' had a low dry matter yield (&lt;5,000 kg ha-1) and did not suppress weeds. Panicum maximum, U. brizantha 'Piatã', U. ruziziensis, and U. ruziziensis intercropped with C. spectabilis provide high dry matter yield and suppress weed infestation in the cerrado area.
DOI: 10.6084/m9.figshare.6992726
title: Optimization and Validation of an Extraction Method for Evaluating the Availability of Cu, Zn, Mn, Ni, Cr and Cd in Soil with the Use of the Mehlich-1 Extractor

description: The Mehlich-1 extractor is routinely used to evaluate the bioavailability of metals in soil since it has a high closeness between the amount of these elements absorbed by the plants and those available in soil, as well as being simple and practical to use. Thus, the aim of this work was to improve (optimize) a Mehlich-1 extraction method for evaluating the availability of Cu, Zn, Mn, Ni, Cr and Cd in soil using Box-Behnken type response surface method (RSM). After optimizing the soil amount, Mehlich-1 extractor volume and stirring time, the validation of the newly developed method was performed by evaluating the following parameters: matrix adjustment, linearity, linear range, limits of detection (LOD) and of quantification (LOQ), precision and accuracy. The analytical method proposed by this study can be routinely employed for the evaluation of soil toxicity since it presented advantages such as simplicity, speed and efficacy, as well as being precise and accurate.
DOI: 10.6084/m9.figshare.6992723.v1
title: Suppressive effects on weeds and dry matter yields of cover crops

description: Abstract: The objective of this work was to evaluate the dry matter yield of cover crops and their suppressive effects on weeds. The experiment was carried out during three years in a cerrado area of the state of Goiás, Brazil, and consisted of 16 treatments with fallow and cover crops cultivated in single cropping and intercropping. Fallow allowed high weed infestation. Cover crops affected the composition of weeds, which showed greater diversity in fallow, followed by the Pennisetum glaucum 'BRS 1501' and Cajanus cajan crops. In the average of the three experimental years, the highest dry matter yield was observed for the treatments Panicum maximum (10,857 kg ha-1), Urochloa brizantha 'Piatã' (11,437 kg ha-1), U. ruziziensis (9,463 kg ha-1), and U. ruziziensis intercropped with Crotalaria spectabilis (9,167 kg ha-1), which prevented weed infestation. Pennisetum glaucum 'BRS 1501' had a low dry matter yield (&lt;5,000 kg ha-1) and did not suppress weeds. Panicum maximum, U. brizantha 'Piatã', U. ruziziensis, and U. ruziziensis intercropped with C. spectabilis provide high dry matter yield and suppress weed infestation in the cerrado area.
DOI: 10.6084/m9.figshare.6992726.v1
title: Optimization and Validation of an Extraction Method for Evaluating the Availability of Cu, Zn, Mn, Ni, Cr and Cd in Soil with the Use of the Mehlich-1 Extractor

description: The Mehlich-1 extractor is routinely used to evaluate the bioavailability of metals in soil since it has a high closeness between the amount of these elements absorbed by the plants and those available in soil, as well as being simple and practical to use. Thus, the aim of this work was to improve (optimize) a Mehlich-1 extraction method for evaluating the availability of Cu, Zn, Mn, Ni, Cr and Cd in soil using Box-Behnken type response surface method (RSM). After optimizing the soil amount, Mehlich-1 extractor volume and stirring time, the validation of the newly developed method was performed by evaluating the following parameters: matrix adjustment, linearity, linear range, limits of detection (LOD) and of quantification (LOQ), precision and accuracy. The analytical method proposed by this study can be routinely employed for the evaluation of soil toxicity since it presented advantages such as simplicity, speed and efficacy, as well as being precise and accurate.
DOI: 10.6084/m9.figshare.6992708
title: Green pit technology as a rural sanitation component for the semiarid region of Brazil

description: ABSTRACT The green pit module corresponds to an alternative model to treat domestic sewage in rural areas, which considers water reuse in productive yards, contributing to rural sanitation. The present investigation has assessed the green pit module performance based on 70 modules installed in the semiarid region of Brazil and includes sanitary quality test of cultivated vegetables, sizing proposal, rate of accumulation of the sludge produced and evaluation of the maintenance period of the green pit module. A design method was presented, which is based on water consumption, and has been assessed on site for two kinds of homes: those with (R1) and without (R2) tap water supply. In addition, we measured the sewage contribution and return coefficient for each case. The analyzed samples of tomato (Solanum esculentum), pepper (Capsicum chinense), banana (Musa sp.) and “malvarisco” leaves (Plectranthus amboinicus L.) presented low levels of coliform (below ten colony-forming units per gram) and absence of Salmonella sp., which complies with the Brazilian sanitation legislation. The water consumption for R1 and R2 were 50 and 34 L.resident-1.day-1, whereas sewage per capita production totaled 13.1 and 1.2 L.resident-1.day-1 for R1 and R2, respectively. This indicates return coefficients of 26 and 3% for R1 and R2, respectively, which differs significantly from the usually recommended value (80%). The system presents low maintenance demand: the sludge should be removed every 5.3 years, on average.
DOI: 10.6084/m9.figshare.6992708.v1
title: Green pit technology as a rural sanitation component for the semiarid region of Brazil

description: ABSTRACT The green pit module corresponds to an alternative model to treat domestic sewage in rural areas, which considers water reuse in productive yards, contributing to rural sanitation. The present investigation has assessed the green pit module performance based on 70 modules installed in the semiarid region of Brazil and includes sanitary quality test of cultivated vegetables, sizing proposal, rate of accumulation of the sludge produced and evaluation of the maintenance period of the green pit module. A design method was presented, which is based on water consumption, and has been assessed on site for two kinds of homes: those with (R1) and without (R2) tap water supply. In addition, we measured the sewage contribution and return coefficient for each case. The analyzed samples of tomato (Solanum esculentum), pepper (Capsicum chinense), banana (Musa sp.) and “malvarisco” leaves (Plectranthus amboinicus L.) presented low levels of coliform (below ten colony-forming units per gram) and absence of Salmonella sp., which complies with the Brazilian sanitation legislation. The water consumption for R1 and R2 were 50 and 34 L.resident-1.day-1, whereas sewage per capita production totaled 13.1 and 1.2 L.resident-1.day-1 for R1 and R2, respectively. This indicates return coefficients of 26 and 3% for R1 and R2, respectively, which differs significantly from the usually recommended value (80%). The system presents low maintenance demand: the sludge should be removed every 5.3 years, on average.
DOI: 10.6084/m9.figshare.6992702
title: Antimycobacterial and cytotoxicity activity of microcystins

description: Background The present work aimed to evaluate the antimycobacterial activity and cytotoxicity of Microcystis aeruginosa toxins, the MC-LR variant and purified extract of [D-Leu1] microcystin-LR. Methods The antimicrobial activity of M. aeruginosa extract and microcystin was evaluated by resazurin microtiter assay against Mycobacterium tuberculosis, M. terrae, M. chelonae and M. kansasii. The cytotoxicity assay was performed by trypan blue exclusion against the HTC cell line. Results Antimicrobial activity was observed in the hexanic extract of M. aeruginosa (RST 9501 strain) against M. tuberculosis, including sensitive and resistant strains with minimal inhibitory concentrations (MIC) between 1.93 μM and 0.06 μM. The high activity of M. aeruginosa hexanic extract could be attributed to the major presence of the toxins MC-LR and [D-Leu1] MC-LR that showed activity at MIC between 53 and 0.42 μM against tested mycobacterial strains. Even at the highest concentration tested, no toxicity of M. aeruginosa extracts was identified against HTC cells. Conclusions These preliminary results suggest that [D-Leu1] MC-LR is a promising candidate for the development of a new antimycobacterial agent.
DOI: 10.6084/m9.figshare.6992705
title: Performance of fat snook juveniles reared at different temperatures

description: ABSTRACT. We aimed at evaluating the effects of different water temperatures on the zootechnical performance of fat snook. The experiment lasted for 60 days, which was conducted in water recirculation systems, and was randomly designed with three treatments and three replicates each, corresponding to three water temperatures (25, 28 and 31°C). A total of 225 fat snook juveniles with a mean weight of 6.45 ± 0.58 g were used, which were fed daily until apparent satiety. Zootechnical parameters were assessed and feeding rates were registered for each tested temperature. Survival rates varied from 96 to 100% among treatments. Higher values of standard and total length, and weight gain were found in 28 and 31°C (p &lt; 0.05). With regard to final weight, final biomass, feed conversion and specific growth rate, no significant differences were observed (p &gt; 0.05). Feeding rates did not differ among evaluated temperatures. The results show that the used temperatures did not negatively affect zootechnical performance of fat snook juveniles.
DOI: 10.6084/m9.figshare.6992702.v1
title: Antimycobacterial and cytotoxicity activity of microcystins

description: Background The present work aimed to evaluate the antimycobacterial activity and cytotoxicity of Microcystis aeruginosa toxins, the MC-LR variant and purified extract of [D-Leu1] microcystin-LR. Methods The antimicrobial activity of M. aeruginosa extract and microcystin was evaluated by resazurin microtiter assay against Mycobacterium tuberculosis, M. terrae, M. chelonae and M. kansasii. The cytotoxicity assay was performed by trypan blue exclusion against the HTC cell line. Results Antimicrobial activity was observed in the hexanic extract of M. aeruginosa (RST 9501 strain) against M. tuberculosis, including sensitive and resistant strains with minimal inhibitory concentrations (MIC) between 1.93 μM and 0.06 μM. The high activity of M. aeruginosa hexanic extract could be attributed to the major presence of the toxins MC-LR and [D-Leu1] MC-LR that showed activity at MIC between 53 and 0.42 μM against tested mycobacterial strains. Even at the highest concentration tested, no toxicity of M. aeruginosa extracts was identified against HTC cells. Conclusions These preliminary results suggest that [D-Leu1] MC-LR is a promising candidate for the development of a new antimycobacterial agent.