cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7452386.v1
title: Can Aspergillus fumigatus conidia cause false-positive results in the galactomannan enzyme immunoassay test?

description: Abstract INTRODUCTION: Several factors can cause false-positive results in the galactomannan (GM) test; however, others remain unknown. Presently, the impact of airborne contamination by Aspergillus conidia during enzyme-linked immunosorbent assay (ELISA) remains uninvestigated. METHODS: We studied 12 A. fumigatus isolates. Fungal conidia were serially diluted and tested for GM detection using the Platelia® Aspergillus enzyme immunoassay (EIA). RESULTS: The conidia concentration required for an EIA-positive result was 4.8 × 103 (median). CONCLUSIONS: This is the first study to evaluate the impact of environmental contamination on the Platelia® Aspergillus EIA assay. Only massive contamination can interfere with GM optical readings, suggesting that environmental contamination does not cause false-positive test results.
DOI: 10.6084/m9.figshare.7452374
title: Reproduction of two loricariid species in a confined river and implications for environmental impacts of dams

description: ABSTRACT Fish reproduction in floodplain rivers is often linked to flow regime and with the inundation of floodplain habitats. However, in confined rivers, where floodplains are absent, the relation between reproduction and flow can in comparison be expected to be distinct. In this study, we describe the reproductive life-history of Hemiancistrus fuliginosus and Hypostomus isbrueckeri in a confined river and discuss its differences relative to floodplain loricariids and also the implications for effects of dam construction and flow regulation. We found the reproductive peak of both species occurred during lowering waters, just after maximum river flow, in contrast to floodplain species that tend to spawn during rising waters. The studied species presented attributes of equilibrium life-history strategy, which are related to predictable river flow variation. Because both species spawned during low river flow, which is historically predictable in summer, we suggest that their reproduction may be severely disrupted, depending on how flow regime is affected by dam operation. These results have implications for assessing and mitigating the impacts of river damming on fish populations in confined rivers, and we point to ecologically driven flow management and conservation of free-flowing rivers as mitigation and conservation alternatives.
DOI: 10.6084/m9.figshare.7452374.v1
title: Reproduction of two loricariid species in a confined river and implications for environmental impacts of dams

description: ABSTRACT Fish reproduction in floodplain rivers is often linked to flow regime and with the inundation of floodplain habitats. However, in confined rivers, where floodplains are absent, the relation between reproduction and flow can in comparison be expected to be distinct. In this study, we describe the reproductive life-history of Hemiancistrus fuliginosus and Hypostomus isbrueckeri in a confined river and discuss its differences relative to floodplain loricariids and also the implications for effects of dam construction and flow regulation. We found the reproductive peak of both species occurred during lowering waters, just after maximum river flow, in contrast to floodplain species that tend to spawn during rising waters. The studied species presented attributes of equilibrium life-history strategy, which are related to predictable river flow variation. Because both species spawned during low river flow, which is historically predictable in summer, we suggest that their reproduction may be severely disrupted, depending on how flow regime is affected by dam operation. These results have implications for assessing and mitigating the impacts of river damming on fish populations in confined rivers, and we point to ecologically driven flow management and conservation of free-flowing rivers as mitigation and conservation alternatives.
DOI: 10.6084/m9.figshare.7452380
title: Microbiological and physicochemical profiles of the sour cassava starch and bagasse obtained from cassava agroindustry

description: Abstract The aim of this work was to evaluate the microbiological and physicochemical qualities of sour cassava starch and cassava bagasse produced during cassava agroindustry in order to evaluate their potential for use in food. All samples were kindly provided by family farmers producers from the region of Cará, in town of Bela Vista de Goiás, Brazil. All of sour cassava starch samples showed microbial counts within the values established by the current legislation. Drying process of raw cassava bagasse to produce the bran was sufficient to reduce the mold and yeast counts (from 1.9x103 to 3.5x101 CFU g -1) and of total coliform counts (from 2.1x103 to 2.4x102 MPN 100 mL-1), and also eliminated the contamination by coliforms at 45 ° C and Bacillus cereus. Carbohydrate contents of all sour cassava starch samples ranged from 99.64 to 99.75 g 100g-1. These results indicated that the sour cassava starch presented high degree of purity, and extraction process was efficient. Bran sample showed high carbohydrate (96.94 g 100g-1) and dietary fiber (22.58 g 100g-1) contents. High dietary fiber content suggests the use of bran as raw material to increase the availability of fiber in food products, increasing its nutritional quality.
DOI: 10.7284/101814
title: GNSS (Global Navigation Satellite System) data collected during research cruise MV1006 using a Ashtech ADU2 instrument system onboard the platform RV Melville

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7452368
title: Investigation of bioactive compounds from various avocado varieties (Persea americana Miller)

description: Abstract This aim of this study was to characterize five varieties of avocado for their proximal composition, physical properties, fatty acids composition, antioxidant capacity, carotenoids and minerals. Quintal variety presented the best result for total lipids, physical properties, carotenoids and minerals. All the varieties presented a predominance of monounsaturated fatty acids (60%). The major monounsaturated fatty acid was oleic acid. Among the varieties analyzed, Breda variety had greater activity results for FRAP (145%) and DPPH (1.1200 µmol TE/g) assays, Quintal had higher values for ABTS analysis, Ouro Verde presented better results for ORAC assay (23%), and Margarida had the best result for L-ORAC analysis (200 µmol ET/g).
DOI: 10.6084/m9.figshare.7452371
title: Chicken nuggets packaging attributes impact on consumer purchase intention

description: Abstract The aim of this study was to evaluate the influence of chicken nuggets packaging attributes on Brazilian consumer purchase intention. Focus group technique was employed in order to identify the relevant packaging characteristics. Forty consumers were interviewed in six sessions where five different types of chicken nuggets packaging were evaluated. After identifying the most relevant parameters for the study (color, picture, brand, and price), the impact of each characteristic (factor) on the purchase intent was evaluated. The conjoint analysis technique was applied to 100 consumers data. Eight stimuli (labels) were prepared by combining two levels for each factor using a fractional factorial design 24-1. The price significantly influences at the time of purchase, which was quantitatively confirmed by the conjoint analysis, demonstrating the importance of a product supplied with a competitive market price. The picture influences at the time of purchase more than color and brand. Despite having less relative importance, warm colors and a brand already associated with the product might contribute positively to purchase intention.
DOI: 10.6084/m9.figshare.7452380.v1
title: Microbiological and physicochemical profiles of the sour cassava starch and bagasse obtained from cassava agroindustry

description: Abstract The aim of this work was to evaluate the microbiological and physicochemical qualities of sour cassava starch and cassava bagasse produced during cassava agroindustry in order to evaluate their potential for use in food. All samples were kindly provided by family farmers producers from the region of Cará, in town of Bela Vista de Goiás, Brazil. All of sour cassava starch samples showed microbial counts within the values established by the current legislation. Drying process of raw cassava bagasse to produce the bran was sufficient to reduce the mold and yeast counts (from 1.9x103 to 3.5x101 CFU g -1) and of total coliform counts (from 2.1x103 to 2.4x102 MPN 100 mL-1), and also eliminated the contamination by coliforms at 45 ° C and Bacillus cereus. Carbohydrate contents of all sour cassava starch samples ranged from 99.64 to 99.75 g 100g-1. These results indicated that the sour cassava starch presented high degree of purity, and extraction process was efficient. Bran sample showed high carbohydrate (96.94 g 100g-1) and dietary fiber (22.58 g 100g-1) contents. High dietary fiber content suggests the use of bran as raw material to increase the availability of fiber in food products, increasing its nutritional quality.
DOI: 10.6084/m9.figshare.7452371.v1
title: Chicken nuggets packaging attributes impact on consumer purchase intention

description: Abstract The aim of this study was to evaluate the influence of chicken nuggets packaging attributes on Brazilian consumer purchase intention. Focus group technique was employed in order to identify the relevant packaging characteristics. Forty consumers were interviewed in six sessions where five different types of chicken nuggets packaging were evaluated. After identifying the most relevant parameters for the study (color, picture, brand, and price), the impact of each characteristic (factor) on the purchase intent was evaluated. The conjoint analysis technique was applied to 100 consumers data. Eight stimuli (labels) were prepared by combining two levels for each factor using a fractional factorial design 24-1. The price significantly influences at the time of purchase, which was quantitatively confirmed by the conjoint analysis, demonstrating the importance of a product supplied with a competitive market price. The picture influences at the time of purchase more than color and brand. Despite having less relative importance, warm colors and a brand already associated with the product might contribute positively to purchase intention.
DOI: 10.6084/m9.figshare.7452368.v1
title: Investigation of bioactive compounds from various avocado varieties (Persea americana Miller)

description: Abstract This aim of this study was to characterize five varieties of avocado for their proximal composition, physical properties, fatty acids composition, antioxidant capacity, carotenoids and minerals. Quintal variety presented the best result for total lipids, physical properties, carotenoids and minerals. All the varieties presented a predominance of monounsaturated fatty acids (60%). The major monounsaturated fatty acid was oleic acid. Among the varieties analyzed, Breda variety had greater activity results for FRAP (145%) and DPPH (1.1200 µmol TE/g) assays, Quintal had higher values for ABTS analysis, Ouro Verde presented better results for ORAC assay (23%), and Margarida had the best result for L-ORAC analysis (200 µmol ET/g).
DOI: 10.7284/101815
title: Gravimeter data collected during research cruise MV1006 using a Bell BGM-3 instrument system onboard the platform RV Melville

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7452353
title: Estimation of soybean leaf wetness from meteorological variables

description: Abstract: The objective of this work was to determine models for the estimation of leaf wetness percentage at three heights in the soybean (Glycine max) canopy, using meteorological variables from stations installed at the crop site and at an agrometeorological station. The experiment was conducted in three harvest seasons, in an area cropped with soybean, in the municipality of Londrina, in the state of Paraná, Brazil. To collect the meteorological variables, electronic trees were installed at four heights (0.3, 0.6, 0.9, and 1.7 m) in the crop and a station was installed in an agrometeorological station. The data were separated according to days with and without rain, and the analyses of correlation and of simple and multiple regressions were carried out, in order to obtain models with equations for leaf wetness estimation. Most of the equations that did not use the data of the sensors installed at 1.7 m, especially those of the models based on variables only from the agrometeorological station, presented low reliability. The models obtained with meteorological data only from the soybean crop show high reliability and use a lower amount of variables, which makes them a good alternative for wetness estimation.
DOI: 10.6084/m9.figshare.7452353.v1
title: Estimation of soybean leaf wetness from meteorological variables

description: Abstract: The objective of this work was to determine models for the estimation of leaf wetness percentage at three heights in the soybean (Glycine max) canopy, using meteorological variables from stations installed at the crop site and at an agrometeorological station. The experiment was conducted in three harvest seasons, in an area cropped with soybean, in the municipality of Londrina, in the state of Paraná, Brazil. To collect the meteorological variables, electronic trees were installed at four heights (0.3, 0.6, 0.9, and 1.7 m) in the crop and a station was installed in an agrometeorological station. The data were separated according to days with and without rain, and the analyses of correlation and of simple and multiple regressions were carried out, in order to obtain models with equations for leaf wetness estimation. Most of the equations that did not use the data of the sensors installed at 1.7 m, especially those of the models based on variables only from the agrometeorological station, presented low reliability. The models obtained with meteorological data only from the soybean crop show high reliability and use a lower amount of variables, which makes them a good alternative for wetness estimation.
DOI: 10.7284/101816
title: Meteorological Station data collected during research cruise MV1006 using a SIO MET-System instrument system onboard the platform RV Melville

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7452344
title: Prevalence and factors associated with sedentary behavior in the school recess among adolescents

description: Abstract Aim: To estimate the prevalence of sedentary behavior in school recess and to verify sociodemographic factors (sex, age, economic level and type of school), anthropometric indicators (body mass index [BMI] and waist circumference) and lifestyle (level of physical activity and eating habits) associated with adolescents. Method: A cross-sectional study with 583 adolescents (aged 11-17 years), from the city of Criciúma, Brazil. Sedentary behavior during school recess was self-reported. Sociodemographic and lifestyle information was obtained through a self-administered questionnaire. BMI was calculated and waist circumference was measured. Logistic regression was used to estimate odds ratios (OR) and 95% confidence intervals (95% CI). Results: The prevalence of sedentary behavior during school recess was 50.6% (male 44.5%, female 56.7%). Adolescents aged 14-17 years (male [OR: 2.11, 95% CI: 1.26-3.53], female [OR: 2.52, 95% CI: 1.46-4.34]), from private schools (male [OR: 2.55, 95% CI: 1.49-4.37], female [OR: 2.15, 95% CI: 1.23-3.78]) were more likely to remain in sedentary behavior during school recess. Girls with high waist circumference (OR: 1.70; 95% CI: 1.01-2.84) and inadequate eating habits (OR: 2.12; 95% CI: 1.05-4.24) were more likely to remain in sedentary behavior during school recess. Conclusion: Half of the adolescents presented sedentary behavior during school recess. Adolescents from private schools and in the age group of 14-17 years and girls with high waist circumference and inadequate eating habits were more likely to remain in sedentary behavior during school recess.
DOI: 10.6084/m9.figshare.7452344.v1
title: Prevalence and factors associated with sedentary behavior in the school recess among adolescents

description: Abstract Aim: To estimate the prevalence of sedentary behavior in school recess and to verify sociodemographic factors (sex, age, economic level and type of school), anthropometric indicators (body mass index [BMI] and waist circumference) and lifestyle (level of physical activity and eating habits) associated with adolescents. Method: A cross-sectional study with 583 adolescents (aged 11-17 years), from the city of Criciúma, Brazil. Sedentary behavior during school recess was self-reported. Sociodemographic and lifestyle information was obtained through a self-administered questionnaire. BMI was calculated and waist circumference was measured. Logistic regression was used to estimate odds ratios (OR) and 95% confidence intervals (95% CI). Results: The prevalence of sedentary behavior during school recess was 50.6% (male 44.5%, female 56.7%). Adolescents aged 14-17 years (male [OR: 2.11, 95% CI: 1.26-3.53], female [OR: 2.52, 95% CI: 1.46-4.34]), from private schools (male [OR: 2.55, 95% CI: 1.49-4.37], female [OR: 2.15, 95% CI: 1.23-3.78]) were more likely to remain in sedentary behavior during school recess. Girls with high waist circumference (OR: 1.70; 95% CI: 1.01-2.84) and inadequate eating habits (OR: 2.12; 95% CI: 1.05-4.24) were more likely to remain in sedentary behavior during school recess. Conclusion: Half of the adolescents presented sedentary behavior during school recess. Adolescents from private schools and in the age group of 14-17 years and girls with high waist circumference and inadequate eating habits were more likely to remain in sedentary behavior during school recess.
DOI: 10.7284/101819
title: Multibeam Echosounder data collected during research cruise MV1006 using a Kongsberg EM122 instrument system onboard the platform RV Melville

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7452338
title: The role of body fat in the relationship of cardiorespiratory fitness with cardiovascular risk factors in Brazilian children

description: Abstract Aims: To analyze the association between the percentage of body fat and cardiorespiratory fitness (CRF) with cardiovascular risk factors in children, and; to examine whether percentage of body fat acts as a mediator on the association between CRF and cardiovascular risk factor. Methods: This cross-sectional study included 128 children aged 7-11 years (Mean 8.54, SD: 1.42). The following variables were evaluated: the percentage of body fat, CRF, diastolic and systolic blood pressure, glucose, triglycerides (TG) and total cholesterol. For statistical analysis were performed Partial correlation and mediation analysis. All analysis was adjusted for sex, age and height. Results: CRF, the percentage of body fat, mean arterial pressure (MAP) and TG showed a correlation between each other. Percentage of body fat mediated the association between CRF and MAP (Indirect Effect= -0.008; IC: -0.0159 -0.0030), explaining 29% of this association. However, it was found that the percentage of body fat was not a mediator of the association between CRF and TG. Conclusion: The percentage of body fat mediates the association between CRF and MAP. Our findings show that the importance of a healthy body composition for the prevention of high blood pressure levels in childhood as well as the relevance of physical activity on these parameters.
DOI: 10.6084/m9.figshare.7452338.v1
title: The role of body fat in the relationship of cardiorespiratory fitness with cardiovascular risk factors in Brazilian children

description: Abstract Aims: To analyze the association between the percentage of body fat and cardiorespiratory fitness (CRF) with cardiovascular risk factors in children, and; to examine whether percentage of body fat acts as a mediator on the association between CRF and cardiovascular risk factor. Methods: This cross-sectional study included 128 children aged 7-11 years (Mean 8.54, SD: 1.42). The following variables were evaluated: the percentage of body fat, CRF, diastolic and systolic blood pressure, glucose, triglycerides (TG) and total cholesterol. For statistical analysis were performed Partial correlation and mediation analysis. All analysis was adjusted for sex, age and height. Results: CRF, the percentage of body fat, mean arterial pressure (MAP) and TG showed a correlation between each other. Percentage of body fat mediated the association between CRF and MAP (Indirect Effect= -0.008; IC: -0.0159 -0.0030), explaining 29% of this association. However, it was found that the percentage of body fat was not a mediator of the association between CRF and TG. Conclusion: The percentage of body fat mediates the association between CRF and MAP. Our findings show that the importance of a healthy body composition for the prevention of high blood pressure levels in childhood as well as the relevance of physical activity on these parameters.
DOI: 10.7284/101823
title: ADCP (Acoustic Doppler Current Profiler) data collected during research cruise MV1007 using a Hawaii UHDAS instrument system onboard the platform RV Melville

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7452320
title: Conceptual and mathematical difficulties of the conventional model of damped oscillations

description: Abstract A mathematical study on the subject of damped oscillations is expounded, focused on the computation of the constants of the equation of movement, their mathematical meaning and their implications on the behavior of systems. Examples are given of the initial value method for computing the constants, both for free and damped oscillations. Algebraic expressions are deduced for the conventional damped model and they are comparatively discussed with those from Crawford's formalism. The meaning of the constants is discussed and answers are offered for questions frequently asked by students and professionals. The concept of secant exponential function is introduced, and the distinction between this function and the envelope of the equation of motion is established. Examples are given of systematic errors committed when constants are arbitrarily imposed, and their meaning and the mathematical reason is discussed. In the appendix, the general equation of damped oscillations is deduced and examples are given for all three possible cases of systems (overdamping, critical damping, and underdamped oscillations). The conventional model of damped oscillations is deduced as a particular case of the general equation.