cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.9796121
title: Microclimatic conditions in the canopy strata and its relations with the soybean yield

description: Abstract: Despite its economic importance, the microclimate in soybean canopies has not yet been studied in detail. Such a study can yield valuable information regarding the interaction of a crop with its environment. In this context, the aim of this study was to evaluate the solar radiation dynamic and yield responses for each canopy strata for two soybean cultivars with determined and undetermined growth habits. A field study was conducted during the 2013/2014 and 2014/2015 growing seasons in the city of Frederico Westphalen, Rio Grande do Sul, Brazil. The cultivar NA6411, with a determinate growth habit, presented a greater interception of radiation in the middle and lower canopies strata which results in higher soybean yield when compared to the cultivar TEC6029, and thus, can be recommended for cultivation in crop production systems. The contribution of the middle and upper canopy strata to the total yield formation was greater than that observed in the lower canopy strata due to the greater interception of solar radiation by these strata. To increase soybean yields, new studies regarding the microclimatic conditions of the soybean canopy should be developed to improve the maximum potential yield of the new soybean cultivars.
DOI: 10.6084/m9.figshare.9796121.v1
title: Microclimatic conditions in the canopy strata and its relations with the soybean yield

description: Abstract: Despite its economic importance, the microclimate in soybean canopies has not yet been studied in detail. Such a study can yield valuable information regarding the interaction of a crop with its environment. In this context, the aim of this study was to evaluate the solar radiation dynamic and yield responses for each canopy strata for two soybean cultivars with determined and undetermined growth habits. A field study was conducted during the 2013/2014 and 2014/2015 growing seasons in the city of Frederico Westphalen, Rio Grande do Sul, Brazil. The cultivar NA6411, with a determinate growth habit, presented a greater interception of radiation in the middle and lower canopies strata which results in higher soybean yield when compared to the cultivar TEC6029, and thus, can be recommended for cultivation in crop production systems. The contribution of the middle and upper canopy strata to the total yield formation was greater than that observed in the lower canopy strata due to the greater interception of solar radiation by these strata. To increase soybean yields, new studies regarding the microclimatic conditions of the soybean canopy should be developed to improve the maximum potential yield of the new soybean cultivars.
DOI: 10.6084/m9.figshare.9796103
title: Knapsack sprayers: effort required for pumping lever operation

description: ABSTRACT: Various equipment, mainly manual knapsack sprayers, are used to apply agrochemicals by smallholder farmers. They are highlighted by their versatility of use and mainly by their low cost for farmers. Few operator-related studies were reported in the literature regarding the effort required to operate the knapsack sprayer lever. Knapsack sprayers were evaluated regarding the effort required to move their hand levers, reach and maintain the 300 kPa pressure, and return to the initial position. The objective of this study was to evaluate the operator’s effort to operate the hand lever using the “Super magro” biofertilizer as fluid. It was concluded that all knapsack sprayers are within the Consolidation of Labor Laws (CLT) standards regarding the effort required to operate the hand lever. However, restrictions have been reported in some manual knapsack sprayers regarding international standards.
DOI: 10.6084/m9.figshare.9796106
title: To boldly go: on invasive goblin spiders in Brazil (Araneae, Oonopidae)

description: ABSTRACT Twelve non-native species of the spider family Oonopidae are recorded in Brazil: Brignolia dasysterna Platnick, Dupérré, Ott & Kranz-Baltensperger, 2011, B. parumpunctata (Simon, 1893), Triaeris stenaspis Simon, 1892, Ischnothyreus peltifer (Simon, 1892), I. velox Jackson, 1908, Opopaea concolor (Blackwall, 1859), O. deserticola Simon, 1892, Pelicinus marmoratus Simon, 1892, Heteroonops spinimanus (Simon, 1892), Gamasomorpha parmata (Thorell, 1890) (herein restored to its original combination in Xestaspis), Orchestina pavesiiformis Saaristo, 2007 and O. dentifera (Simon, 1893). Among these species, six new synonyms were detected: Hytanis oblonga Simon, 1893, Xestaspis bipeltis Thorell, 1895, Gamasomorpha insularis Simon, 1907 and Opopaea lutzi Petrunkevitch, 1929 with Xestaspis parmata Thorell, 1890; Gammasomorpha humilis Mello-Leitão, 1920 with Opopaea concolor (Blackwall, 1859) and Gamasomorpha rufa Banks, 1898 with Opopaea deserticola Simon, 1891. Since Hytanis oblonga is the type species of the genus, its synonymy with Xestaspis parmata imply in the synonymy of Hytanis Simon, 1893 with Xestaspis Simon, 1884. The partenogenetic species T. stenaspis is the most distributed synanthropic oonopid in Brazil, occurring all over the country, mainly in urban areas. Some species are reported here to occur in the interior of natural caves, a finding that should raise conservation concerns.
DOI: 10.6084/m9.figshare.9796109
title: Crude glycerol in diets for Nile tilapia in the fattening stage

description: Abstract: The objective of this work was to evaluate the use of crude glycerol as an energy source to replace corn, in diets for Nile tilapia (Oreochromis niloticus) in the fattening stage. Two hundred Nile tilapia (190±4.5 g) were distributed in 20 tanks, in a completely randomized design. The treatments consisted of crude glycerol at 0, 60, 120, 180, and 240 g kg-1, to replace the dietary levels of corn, in order to maintain a constant digestible energy. Fish productive performance and the chemical composition of the fillet were evaluated. Histological analyses of the hepatopancreas, intestine, and visceral fat were also carried out. Crude glycerol had no effect on the performance parameters; however, it caused a quadratic reduction of visceral fat. There was an increase in the moisture and a decrease in the ether extract of the fillet. A linear effect on the blood glucose levels was verified in fish fed the diet without glycerol, and the peak occurred at 90 min. There were no differences for measurements of intestinal villi height and hepatocyte area. Crude glycerol can replace corn in diets for Nile tilapia in the fattening stage, without adversely affecting fish metabolism, productive performance, or survival.
DOI: 10.6084/m9.figshare.9796112
title: To love an author: Marxists in Brazilian universities and the “interpreters of Brazil”

description: Abstract Marxists working in Brazilian universities have answered a questionnaire with 59 questions. One of them asked: “Which authors/interpreters in Brazil are you most interested in?” Based on the answers to this question, a ranking was prepared with the predilections for certain authors. This article aims to identify the principle that rises from the double choice of this ranking: that of Marxists for certains “interpreters” and that of certains “interpreters” for Marxists. To this end, it carries out a sociological characterization of the respondents and the respondents, as well as the representation that the latter share about the former.
DOI: 10.6084/m9.figshare.9796100
title: Evaluation of fundus autofluorescence ımaging of diabetic patients without retinopathy

description: ABSTRACT Purpose: To evaluate the usefulness of fundus autofluorescence imaging of diabetic patients without retinopathy to investigate early retinal damage. Methods: Fundus autofluorescence images of patients with type 2 diabetes mellitus without retinopathy (diabetic group) and age-sex matched healthy patients (control group) were recorded with a CX-1 digital mydriatic retinal camera after detailed ophthalmologic examinations. MATLAB 2013a software was used to measure the average pixel intensity and average curve width of the macula and fovea. Results: Fifty-six eyes of 28 patients, as the diabetic group, and 54 eyes of 27 healthy patients, as the control group, were included in this study. The mean aggregation index was 168.32 ± 37.18 grayscale units (gsu) in the diabetic group and 152.27 ± 30.39 gsu in the control group (p=0.014). The mean average pixel intensity value of the fovea was 150.87 ± 35.83 gsu the in diabetic group and as 141.51 ± 31.10 gsu in the control group (p=0.060). The average curve width value was statistically higher in the diabetic group than in the control group (71.7 ± 9.2 vs. 59.4 ± 8.6 gsu, respectively, p=0.03). Conclusion: Fundus autofluorescence imaging analysis revealed that diabetic patients without retinopathy have significant fluorescence alterations. Therefore, a noninvasive imaging technique, such as fundus autofluorescence, may be valuable for evaluation of the retina of diabetic patients without retinopathy.
DOI: 10.6084/m9.figshare.9796103.v1
title: Knapsack sprayers: effort required for pumping lever operation

description: ABSTRACT: Various equipment, mainly manual knapsack sprayers, are used to apply agrochemicals by smallholder farmers. They are highlighted by their versatility of use and mainly by their low cost for farmers. Few operator-related studies were reported in the literature regarding the effort required to operate the knapsack sprayer lever. Knapsack sprayers were evaluated regarding the effort required to move their hand levers, reach and maintain the 300 kPa pressure, and return to the initial position. The objective of this study was to evaluate the operator’s effort to operate the hand lever using the “Super magro” biofertilizer as fluid. It was concluded that all knapsack sprayers are within the Consolidation of Labor Laws (CLT) standards regarding the effort required to operate the hand lever. However, restrictions have been reported in some manual knapsack sprayers regarding international standards.
DOI: 10.6084/m9.figshare.9796106.v1
title: To boldly go: on invasive goblin spiders in Brazil (Araneae, Oonopidae)

description: ABSTRACT Twelve non-native species of the spider family Oonopidae are recorded in Brazil: Brignolia dasysterna Platnick, Dupérré, Ott & Kranz-Baltensperger, 2011, B. parumpunctata (Simon, 1893), Triaeris stenaspis Simon, 1892, Ischnothyreus peltifer (Simon, 1892), I. velox Jackson, 1908, Opopaea concolor (Blackwall, 1859), O. deserticola Simon, 1892, Pelicinus marmoratus Simon, 1892, Heteroonops spinimanus (Simon, 1892), Gamasomorpha parmata (Thorell, 1890) (herein restored to its original combination in Xestaspis), Orchestina pavesiiformis Saaristo, 2007 and O. dentifera (Simon, 1893). Among these species, six new synonyms were detected: Hytanis oblonga Simon, 1893, Xestaspis bipeltis Thorell, 1895, Gamasomorpha insularis Simon, 1907 and Opopaea lutzi Petrunkevitch, 1929 with Xestaspis parmata Thorell, 1890; Gammasomorpha humilis Mello-Leitão, 1920 with Opopaea concolor (Blackwall, 1859) and Gamasomorpha rufa Banks, 1898 with Opopaea deserticola Simon, 1891. Since Hytanis oblonga is the type species of the genus, its synonymy with Xestaspis parmata imply in the synonymy of Hytanis Simon, 1893 with Xestaspis Simon, 1884. The partenogenetic species T. stenaspis is the most distributed synanthropic oonopid in Brazil, occurring all over the country, mainly in urban areas. Some species are reported here to occur in the interior of natural caves, a finding that should raise conservation concerns.
DOI: 10.6084/m9.figshare.9796109.v1
title: Crude glycerol in diets for Nile tilapia in the fattening stage

description: Abstract: The objective of this work was to evaluate the use of crude glycerol as an energy source to replace corn, in diets for Nile tilapia (Oreochromis niloticus) in the fattening stage. Two hundred Nile tilapia (190±4.5 g) were distributed in 20 tanks, in a completely randomized design. The treatments consisted of crude glycerol at 0, 60, 120, 180, and 240 g kg-1, to replace the dietary levels of corn, in order to maintain a constant digestible energy. Fish productive performance and the chemical composition of the fillet were evaluated. Histological analyses of the hepatopancreas, intestine, and visceral fat were also carried out. Crude glycerol had no effect on the performance parameters; however, it caused a quadratic reduction of visceral fat. There was an increase in the moisture and a decrease in the ether extract of the fillet. A linear effect on the blood glucose levels was verified in fish fed the diet without glycerol, and the peak occurred at 90 min. There were no differences for measurements of intestinal villi height and hepatocyte area. Crude glycerol can replace corn in diets for Nile tilapia in the fattening stage, without adversely affecting fish metabolism, productive performance, or survival.
DOI: 10.6084/m9.figshare.9796112.v1
title: To love an author: Marxists in Brazilian universities and the “interpreters of Brazil”

description: Abstract Marxists working in Brazilian universities have answered a questionnaire with 59 questions. One of them asked: “Which authors/interpreters in Brazil are you most interested in?” Based on the answers to this question, a ranking was prepared with the predilections for certain authors. This article aims to identify the principle that rises from the double choice of this ranking: that of Marxists for certains “interpreters” and that of certains “interpreters” for Marxists. To this end, it carries out a sociological characterization of the respondents and the respondents, as well as the representation that the latter share about the former.
DOI: 10.6084/m9.figshare.9796088
title: Study of properties of Light Emission Diode (LED) for the determination of the Planck constant in a automated device with Arduino platform aid

description: Abstract In the present article, the experimental method of determination of Planck's constant, one of the fundamental physical constants, is presented by studying the quantum and wave properties of the light emitting diode (LED), in an automated experimental model which contains an electronic circuit connected to a computer using the USB protocol with the help of the Arduino platform. LEDs have found a variety of applications, for example: in home, public, in-house lighting, TV monitors, computers, to read CD and DVD discs in computer units and game console units, or to transmit signals from remote controls to electronic equipment. LED is a vital link between electronics and photonics: LED-based semiconductor lasers send modulated optical signals through fiber optics, catering to the ever-increasing demand for broadband and Internet telecommunication. The automation of measurements and data processing of Physics experiments allows students to deepen their knowledge of methods and techniques of the experiment, to study scientific research apparatus, to master different experimental research methods, to master mathematical methods and graphs of the results obtained, and also the evaluation of the measurements made.
DOI: 10.6084/m9.figshare.9796091
title: Environmental characterization of land use and occupation of areas of influence in municipalities of the Latin American Integration Route

description: Abstract The environmental analysis is fundamental to recognize the potentialities and vulnerabilities of the region investigated. Based on satellite images, the study sought to analyze the use and occupation of the soil in municipalities that are part of the Bioceanic Highroad Crossing located in the State of Mato Grosso do Sul and that also have territories inserted in the Upper Paraguay Basin. It was found that on average 60% of the municipalities had part of their native vegetation replaced by monocultures and exotic pastures.
DOI: 10.6084/m9.figshare.9796097
title: Growth, production and water and nitrogen use efficiency of maize under water depths and nitrogen fertilization

description: ABSTRACT The objective of this study was to evaluate the growth, the production components and the water (WUE) and nitrogen use efficiency (NUE) in maize (Zea mays L.), as function of water depths and nitrogen doses. The experimental design was randomized blocks in a split-plot scheme with four repetitions. The irrigation treatments applied in the plots were composed of four water depths: 80, 90, 100 and 110% of the water requirement, based on the soil field capacity, while the N doses, distributed in the subplots, were 0, 60, 120 and 180 kg ha-1. Increases in water depths and in N doses promote linear increases in plant height and leaf area index. For cycle I (2015) the maximum yield (16,778.3 kg ha-1) was reached with the irrigation depth of 538.1 mm and nitrogen dose of 180 kg ha-1; and for cycle II (2016), the maximum yield was reached with the irrigation depth corresponding to 505 mm and N dose of 180 kg ha-1, yielding 17,819.5 kg ha-1. The highest values of WUE (4.1 and 3.8 kg m-3) were estimated in cycle I (2015) for 432.7 mm and in cycle II (2016) for 359.6 mm, respectively; while the highest values of NUE (67.5 and 65.3 kg kg-1) were estimated in cycle I (2015), for the water depth of 555.7 mm and nitrogen dose of 113.3 kg ha-1, and in cycle II (2016), for the water depth of 506 mm and nitrogen dose of 107.7 kg ha-1.
DOI: 10.6084/m9.figshare.9796100.v1
title: Evaluation of fundus autofluorescence ımaging of diabetic patients without retinopathy

description: ABSTRACT Purpose: To evaluate the usefulness of fundus autofluorescence imaging of diabetic patients without retinopathy to investigate early retinal damage. Methods: Fundus autofluorescence images of patients with type 2 diabetes mellitus without retinopathy (diabetic group) and age-sex matched healthy patients (control group) were recorded with a CX-1 digital mydriatic retinal camera after detailed ophthalmologic examinations. MATLAB 2013a software was used to measure the average pixel intensity and average curve width of the macula and fovea. Results: Fifty-six eyes of 28 patients, as the diabetic group, and 54 eyes of 27 healthy patients, as the control group, were included in this study. The mean aggregation index was 168.32 ± 37.18 grayscale units (gsu) in the diabetic group and 152.27 ± 30.39 gsu in the control group (p=0.014). The mean average pixel intensity value of the fovea was 150.87 ± 35.83 gsu the in diabetic group and as 141.51 ± 31.10 gsu in the control group (p=0.060). The average curve width value was statistically higher in the diabetic group than in the control group (71.7 ± 9.2 vs. 59.4 ± 8.6 gsu, respectively, p=0.03). Conclusion: Fundus autofluorescence imaging analysis revealed that diabetic patients without retinopathy have significant fluorescence alterations. Therefore, a noninvasive imaging technique, such as fundus autofluorescence, may be valuable for evaluation of the retina of diabetic patients without retinopathy.
DOI: 10.6084/m9.figshare.9796085
title: How tourists from countries of the Bioceanic Highroad Crossing “see” the tourist attractions of Bonito, MS, Brazil: an analysis based on netnography principles

description: Abstract: This study aims to understand how tourists from Paraguay, Argentina and Chile “see” the attributes of the tourist attractions of Bonito, MS, Brazil, an important tourist destination in the influence area of the Bioceanic Highroad Crossing. Therefore, a netnographic research was carried out, using the Iramuteq software. It was verified that the tourists value the attributes related to the environment, corroborating the emphasis of Bonito, MS in activities related to ecotourism.
DOI: 10.6084/m9.figshare.9796097.v1
title: Growth, production and water and nitrogen use efficiency of maize under water depths and nitrogen fertilization

description: ABSTRACT The objective of this study was to evaluate the growth, the production components and the water (WUE) and nitrogen use efficiency (NUE) in maize (Zea mays L.), as function of water depths and nitrogen doses. The experimental design was randomized blocks in a split-plot scheme with four repetitions. The irrigation treatments applied in the plots were composed of four water depths: 80, 90, 100 and 110% of the water requirement, based on the soil field capacity, while the N doses, distributed in the subplots, were 0, 60, 120 and 180 kg ha-1. Increases in water depths and in N doses promote linear increases in plant height and leaf area index. For cycle I (2015) the maximum yield (16,778.3 kg ha-1) was reached with the irrigation depth of 538.1 mm and nitrogen dose of 180 kg ha-1; and for cycle II (2016), the maximum yield was reached with the irrigation depth corresponding to 505 mm and N dose of 180 kg ha-1, yielding 17,819.5 kg ha-1. The highest values of WUE (4.1 and 3.8 kg m-3) were estimated in cycle I (2015) for 432.7 mm and in cycle II (2016) for 359.6 mm, respectively; while the highest values of NUE (67.5 and 65.3 kg kg-1) were estimated in cycle I (2015), for the water depth of 555.7 mm and nitrogen dose of 113.3 kg ha-1, and in cycle II (2016), for the water depth of 506 mm and nitrogen dose of 107.7 kg ha-1.
DOI: 10.6084/m9.figshare.9796082
title: Territorial behavior, vocalization and reproductive biology of Allobates olfersioides (Anura: Aromobatidae)

description: ABSTRACT For the amphibians the territoriality, the elaborate courtship and other forms of behaviors, seem to be more associated with species that exhibit the pattern of prolonged reproduction. Vocalization is an important biological aspect related to the reproduction and social behavior of the anurans. This is the first study with behavior and calls for the rocket frog, Allobates olfersioides (Lutz, 1925) and we record the territorial and courtship behavior in ethogram, describe and analyze its vocal repertoire and evaluate the climatic influence on the acoustic activity of the species. We observed 18 males of A. olfersioides by animal focal method, recording all individual activities for ten minutes to calculate the frequency of each action exhibited. Additionally, we played a previously recorded advertisement call to individual male frogs for analyze the territorial responses displayed by individual males during the work. For this anuran, we recorded 11 distinct behaviors and analyzed 14 advertisement calls that demonstrated that the call of A. olfersioides is a simple call composed of a single non-pulsed note, the call duration had a mean of 0.02s, the mean of intercall interval was of 0.35s and the dominant frequency presented a mean of 5.67 kHz. The period of vocal activity was recorded during almost all months of the study (November 2015 to October 2016), except November and December, where the individuals presented acoustic inactivity. We believe that A. olfersioides presents a continuous reproduction (approximately 10 months), due to the absence of vocalizations during the driest months in November and December. Concerning the behavioral activities, A. olfersioides presents territorialist behavior patterns similar to other species of Aromobatidae, demonstrating the importance of the acoustic and visual signals exhibited by this anuran species of the Atlantic Forest.