cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.11266031
title: Simultaneous selection for yield, adaptability, and genotypic stability in immature cowpea using REML/BLUP

description: Abstract: The objective of this work was to select cowpea genotypes simultaneously for high yield of immature grains, adaptability, and genotypic stability, taking into account genotype x environment interactions. The mixed models restricted maximum likelihood (REML)/best linear unbiased prediction (BLUP) were used. Sixteen cowpea genotypes were evaluated in nine environments, consisting of a combination of location (Pentecoste in the state of Ceará, Acaraú in Ceará, Teresina in Piauí, and Mossoró in Rio Grande do Norte, Brazil) and year (2012, 2013, 2014, 2015, and 2017). In all trials, a randomized complete block design with four replicates was used. Significant differences were observed for effects of genotypes and the genotype x environment interaction. Environmental variance was the largest component of phenotypic variance, followed by the genotype x environment interaction and genotypic variances. The immature grain yield of the evaluated cowpea genotypes interacts strongly with the studied environments, resulting in a low genotypic correlation between environments. The MNC00-595F-27, MNC05-847B-123, and BRS Tumucumaque cowpea genotypes present high yield of immature grains, adaptability, and genotypic stability, being the most suitable for cultivation in the states of Ceará, Piauí, and Rio Grande do Norte or in other environments with similar soil and climatic conditions.
DOI: 10.6084/m9.figshare.11266046.v1
title: Induction of lactation: an economic study of tool for dairy heifers with successive reproductive failures

description: ABSTRACT: The aim of this study was to evaluate the economic viability of the use of a lactation induction protocol in Holstein heifers. Were collected data of nutritional, reproductive and sanitary management pre and post-lactation period from 30 induction heifers (IG) and 30 pregnant heifers (CG). All animals were inseminated around 14 months of age and started lactation at 23±4 months. The animals of IG were heifers do not pregnant after two inseminations and natural service e were induced to lactation according to protocol: from the 1st to the 8th day, 30 mg of estradiol benzoate were administered daily, together with 300 mg of progesterone. From the 9th until the 14th, animals only received daily doses of 20 mg estradiol benzoate. On 16th day, 0.56 mg of sodium cloprostenol was administered and injections of 40 mg of dexamethasone sodium phosphate were administered daily from the 19th to the 21st day. On the 1st, 8th, 15th and 22nd day, the animals received a dose of sometribove zinc. The animals of CG were managed according to the farm routine. The costs of the CG during pre and post lactation (nutrition, sanitary, reproduction management) e were higher than the IG, however, when evaluating the economic viability due to lower milk production, the induced group did not leave profit in the first year of use. When comparing the lactation induction with the sale of animals that did not conceive and purchase of animals for replacement, this last scenario showed itself as a better alternative.
DOI: 10.6084/m9.figshare.11266037
title: Maize cropping systems and response of common bean in succession subjected to nitrogen fertilization1

description: ABSTRACT The common bean succession to intercropped crops in the no-tillage system is beneficial, especially in the search for sustainability. In addition to the straw production, the intercropping can supply nitrogen (N) to the common bean grown in succession, reducing the use of mineral fertilizer, which is pollutant and has a high cost. The present study aimed to evaluate the response to N fertilization of common bean in succession to maize cropping systems, as well as the viability of these systems in the no-tillage system. The experimental design was randomized blocks, in a split-plot arrangement, with four replicates. The plots consisted of the following systems: maize as a single crop, maize intercropped with brachiaria and maize intercropped with crotalaria. The subplots were five N doses (0 kg ha-1, 50 kg ha-1, 100 kg ha-1, 150 kg ha-1 and 200 kg ha-1), applied as topdressing fertilization in winter common bean, in succession to the maize cropping systems. For the maize cultivation systems, the grain yield and N amount and accumulation in the straw were evaluated. As for the common bean in succession, the grain yield and grain quality attributes were assessed. Although the three cropping systems were viable for maize grain yield, the intercropping of maize with crotalaria led to a higher N accumulation in the straw and a larger quantity of straw dry mass. The increase of the N doses promoted an increase in the grain yield of common bean grown in succession to intercropped maize. Maize intercropped with crotalaria resulted in grains with a higher size and, concerning the grain yield, an equivalent effect to that of a topdressing application of more than 200 kg ha-1 of N was observed for the common bean in succession.
DOI: 10.6084/m9.figshare.11266019
title: Changes in carbohydrates accumulation in Viguiera discolor Baker in response to water deficit

description: ABSTRACT Water stress is an environmental factor that can regulate growth, limit production and lead to physiological and biochemical changes. Plants present a series of adaptive responses to drought, such as osmotic adjustment, in which carbohydrates play an important role. To evaluate the influence of water deficit on carbohydrates accumulation in V. discolor, the plants were divided into two groups: daily watering and water suppression for 14 days being re-watering after this period. Leaves and roots were collected at 0, 3, 6, 9, 12, 15 and 18 days, for ecophysiological and biochemical analyzes. Variations in carbohydrate contents in V. discolor showed a close relationship with changes in the plant water status, with higher concentrations of soluble sugars, total fructans, oligosaccharides, reducing sugars coinciding with the lower values of soil moisture and leaf water potentials and relative water content. In the tuberous roots, there is an increase in carbohydrate concentrations after re-watering. The increase of these low molecular weight carbohydrates is involved in osmotic adjustment and therefore acts to protect against dehydration.
DOI: 10.6084/m9.figshare.11266037.v1
title: Maize cropping systems and response of common bean in succession subjected to nitrogen fertilization1

description: ABSTRACT The common bean succession to intercropped crops in the no-tillage system is beneficial, especially in the search for sustainability. In addition to the straw production, the intercropping can supply nitrogen (N) to the common bean grown in succession, reducing the use of mineral fertilizer, which is pollutant and has a high cost. The present study aimed to evaluate the response to N fertilization of common bean in succession to maize cropping systems, as well as the viability of these systems in the no-tillage system. The experimental design was randomized blocks, in a split-plot arrangement, with four replicates. The plots consisted of the following systems: maize as a single crop, maize intercropped with brachiaria and maize intercropped with crotalaria. The subplots were five N doses (0 kg ha-1, 50 kg ha-1, 100 kg ha-1, 150 kg ha-1 and 200 kg ha-1), applied as topdressing fertilization in winter common bean, in succession to the maize cropping systems. For the maize cultivation systems, the grain yield and N amount and accumulation in the straw were evaluated. As for the common bean in succession, the grain yield and grain quality attributes were assessed. Although the three cropping systems were viable for maize grain yield, the intercropping of maize with crotalaria led to a higher N accumulation in the straw and a larger quantity of straw dry mass. The increase of the N doses promoted an increase in the grain yield of common bean grown in succession to intercropped maize. Maize intercropped with crotalaria resulted in grains with a higher size and, concerning the grain yield, an equivalent effect to that of a topdressing application of more than 200 kg ha-1 of N was observed for the common bean in succession.
DOI: 10.6084/m9.figshare.11266040.v1
title: PROPERTIES OF PARTICLEBOARD PANELS MADE OF SUGARCANE PARTICLES WITH AND WITHOUT HEAT TREATMENT

description: ABSTRACT The objective of this work was to determine the properties of particleboard panels made of “in natura” sugarcane bagasse particles, heated at 250 °C for 5 minutes. Various particle proportions were utilized to produce the panels and their properties were compared with that of a panel made of Pinus sp. The panels were produced with 8% tannin formaldehyde adhesive, and 0.5% paraffin emulsion, being pressed at 32 kgf.cm-2 for 10 minutes at 180 ° C. It was determined the basic density of the “in natura” and heat-treated particles, their chemical composition, as well as the compression ratio necessary to obtain panels with density equal to 0.75 g.cm-3. The basic density of the panels, hygroscopic equilibrium humidity, thickness swelling, linear expansion, water vapor adsorption, modulus of elasticity and rupture, perpendicular traction, screw pullout, and Janka hardness were determined. The basic densities of Pinus particles and sugarcane bagasse without and with heat treatment were 0.46, 0.27 and 0.30 g.cm-3, respectively. The average specific mass of the panels was 0.74 g.cm-3 with no significant difference between them. Generally, panels made of sugarcane particles were less hygroscopic and dimensionally more stable than panels made of Pinus particles. However, the perpendicular tensile strength, screw pullout and Janka hardness of these panels were higher than for the Pinus panels. The heat treatment of sugarcane bagasse particles resulted in better mechanical properties of perpendicular traction and Janka hardness. In general, the panels are within the limits set by ANSI A208.1. It is therefore possible to replace panels made of Pinus particles for the ones made of sugarcane bagasse, provided that at least 25% of the particles are heat treated for 5 minutes at 250 ° C.
DOI: 10.6084/m9.figshare.11266019.v1
title: Changes in carbohydrates accumulation in Viguiera discolor Baker in response to water deficit

description: ABSTRACT Water stress is an environmental factor that can regulate growth, limit production and lead to physiological and biochemical changes. Plants present a series of adaptive responses to drought, such as osmotic adjustment, in which carbohydrates play an important role. To evaluate the influence of water deficit on carbohydrates accumulation in V. discolor, the plants were divided into two groups: daily watering and water suppression for 14 days being re-watering after this period. Leaves and roots were collected at 0, 3, 6, 9, 12, 15 and 18 days, for ecophysiological and biochemical analyzes. Variations in carbohydrate contents in V. discolor showed a close relationship with changes in the plant water status, with higher concentrations of soluble sugars, total fructans, oligosaccharides, reducing sugars coinciding with the lower values of soil moisture and leaf water potentials and relative water content. In the tuberous roots, there is an increase in carbohydrate concentrations after re-watering. The increase of these low molecular weight carbohydrates is involved in osmotic adjustment and therefore acts to protect against dehydration.
DOI: 10.6084/m9.figshare.11266031.v1
title: Simultaneous selection for yield, adaptability, and genotypic stability in immature cowpea using REML/BLUP

description: Abstract: The objective of this work was to select cowpea genotypes simultaneously for high yield of immature grains, adaptability, and genotypic stability, taking into account genotype x environment interactions. The mixed models restricted maximum likelihood (REML)/best linear unbiased prediction (BLUP) were used. Sixteen cowpea genotypes were evaluated in nine environments, consisting of a combination of location (Pentecoste in the state of Ceará, Acaraú in Ceará, Teresina in Piauí, and Mossoró in Rio Grande do Norte, Brazil) and year (2012, 2013, 2014, 2015, and 2017). In all trials, a randomized complete block design with four replicates was used. Significant differences were observed for effects of genotypes and the genotype x environment interaction. Environmental variance was the largest component of phenotypic variance, followed by the genotype x environment interaction and genotypic variances. The immature grain yield of the evaluated cowpea genotypes interacts strongly with the studied environments, resulting in a low genotypic correlation between environments. The MNC00-595F-27, MNC05-847B-123, and BRS Tumucumaque cowpea genotypes present high yield of immature grains, adaptability, and genotypic stability, being the most suitable for cultivation in the states of Ceará, Piauí, and Rio Grande do Norte or in other environments with similar soil and climatic conditions.
DOI: 10.6084/m9.figshare.11265986
title: Analysis of the process of solar desalination with emphasis in the humidification and dehumidification method

description: ABSTRACT The lack of water is a problem that affects many regions in our planet, specially in very dry places and isles. Experts say that this situation will worsen, and that by 2025 about 1.8 billion people will suffer with water scarcity. Although traditional desalination methods are well-known and implemented alternatives to obtain fresh drinking water, they are not environmentally sustainable, because they are generally supplied by non-renewable fuels, whose combustion intensifies the greenhouse effect, causing disequilibrium to the environment. Another option that has been developed along the years is the desalination by solar energy. Since it is a clean, abundant and renewable type of energy, it is already a good option to isolated regions, whose demand is low or medium. Some technics are shown in this work, which focuses on the humidification-dehumidification desalination method. This technique has shown to be the most efficient one, due to its energy reuse. There is still a long way to go in order to make it viable in large scale, especially in terms of water production, specific energy requirement and specific cost of water production. However, solar desalination by humidification-dehumidification has proven to be a sustainable, promising technic which is reasonably costly and simple to operate. Therefore, the authors encourage more investments in researches in Brazil in the area of solar desalination and use of its rejects, aiming at the production of fresh water in Brazilian regions lacking it.
DOI: 10.6084/m9.figshare.11265971
title: The Sun is always overhead at noon?

description: Abstract The conception of many people that the Sun is overhead at noon is a result of the lack of observation of natural phenomena. This article begins by presenting a review of the literature showing researches on the conceptions of students of different school levels and teachers on the subject. It mentions the knowledge of indigenous and other cultures of the past about the passage of the Sun by the zenith during the year. After this, the movement of the Earth around the Sun is discussed showing the regions of our planet that may have the Sun overhead at some time of the year. Different didactic models are also presented, taking into account the heliocentric, geocentric and topocentric referentials to address such contents with teachers and students.
DOI: 10.6084/m9.figshare.11265986.v1
title: Analysis of the process of solar desalination with emphasis in the humidification and dehumidification method

description: ABSTRACT The lack of water is a problem that affects many regions in our planet, specially in very dry places and isles. Experts say that this situation will worsen, and that by 2025 about 1.8 billion people will suffer with water scarcity. Although traditional desalination methods are well-known and implemented alternatives to obtain fresh drinking water, they are not environmentally sustainable, because they are generally supplied by non-renewable fuels, whose combustion intensifies the greenhouse effect, causing disequilibrium to the environment. Another option that has been developed along the years is the desalination by solar energy. Since it is a clean, abundant and renewable type of energy, it is already a good option to isolated regions, whose demand is low or medium. Some technics are shown in this work, which focuses on the humidification-dehumidification desalination method. This technique has shown to be the most efficient one, due to its energy reuse. There is still a long way to go in order to make it viable in large scale, especially in terms of water production, specific energy requirement and specific cost of water production. However, solar desalination by humidification-dehumidification has proven to be a sustainable, promising technic which is reasonably costly and simple to operate. Therefore, the authors encourage more investments in researches in Brazil in the area of solar desalination and use of its rejects, aiming at the production of fresh water in Brazilian regions lacking it.
DOI: 10.6084/m9.figshare.11265971.v1
title: The Sun is always overhead at noon?

description: Abstract The conception of many people that the Sun is overhead at noon is a result of the lack of observation of natural phenomena. This article begins by presenting a review of the literature showing researches on the conceptions of students of different school levels and teachers on the subject. It mentions the knowledge of indigenous and other cultures of the past about the passage of the Sun by the zenith during the year. After this, the movement of the Earth around the Sun is discussed showing the regions of our planet that may have the Sun overhead at some time of the year. Different didactic models are also presented, taking into account the heliocentric, geocentric and topocentric referentials to address such contents with teachers and students.
DOI: 10.6084/m9.figshare.11265935
title: Teaching of Echoic in People with Autism Spectrum Disorders: Systematic Review of Literature

description: ABSTRACT: Literature has shown a large gap in studies aiming to establish an echoic in people with Autism Spectrum Disorder (ASD). Thus, the objective of this study was to identify the collection of research aimed at teaching echoic in individuals with ASD. The review was based on the Preferred Reporting Items for Systematics Review and Meta-Analysis (PRISMA) model. The search, of all occurrences, without time limit, until the year 2018, was performed in the Web of Science, Pubmed, Scopus, ERIC and PsichINFO database. The keywords and boolean operators autism [or] autist [or] autistic [and] echoic [and] verbal behavior were adopted. The inclusion criteria were articles in Portuguese, English and Spanish that established echoic as a dependent variable in interventions with people with ASD, present a single subject experimental design and demonstrate the data of the echoic acquisition during the teaching sessions. As a result, 338 articles were found and, with the application of the inclusion criteria, three were selected. The results corroborate the data in the literature that point out the deficit of studies to establish echoic as the main target of teaching in people with ASD. Most studies adopt echoic as a prompt for establishing other verbal behavior. Even if scarce, the articles indicate the effects of different procedures under the acquisition of the echoic behavior in people with ASD and with diversified initial repertories.
DOI: 10.6084/m9.figshare.11265920
title: Visual data: a new tool to improve the presentation of clinical trial results

description: ABSTRACT Randomized controlled trials are known to be the best tool to determine the effects of an intervention; however, most healthcare professionals are not able to adequately understand the results. In this report, concepts, applications, examples, and advantages of using visual data as a complementary tool in the results section of original articles are presented. Visual simplification of data presentation will improve general understanding of clinical research.
DOI: 10.6084/m9.figshare.11265929
title: Testing discrepancies in the measurement of the acceleration of gravity in a physical pendulum experiment

description: Abstract After analysing results on the measurement of the acceleration of gravity using a physical pendulum in our teaching laboratory, we found that the value reported by the students is always higher than the theoretical expectations. In this article we analyze critically some of the students hypotheses for such displacement, and we perform an investigation of our own to detect what is leading to this result. We disregarded any flaw on the experimental procedure performed by the students, and instead, concluded that the miscalibration of the laboratory instruments was distorting the students measurements, leading to a ~ 5 % increase in the calculated value of the acceleration of gravity.
DOI: 10.6084/m9.figshare.11265935.v1
title: Teaching of Echoic in People with Autism Spectrum Disorders: Systematic Review of Literature

description: ABSTRACT: Literature has shown a large gap in studies aiming to establish an echoic in people with Autism Spectrum Disorder (ASD). Thus, the objective of this study was to identify the collection of research aimed at teaching echoic in individuals with ASD. The review was based on the Preferred Reporting Items for Systematics Review and Meta-Analysis (PRISMA) model. The search, of all occurrences, without time limit, until the year 2018, was performed in the Web of Science, Pubmed, Scopus, ERIC and PsichINFO database. The keywords and boolean operators autism [or] autist [or] autistic [and] echoic [and] verbal behavior were adopted. The inclusion criteria were articles in Portuguese, English and Spanish that established echoic as a dependent variable in interventions with people with ASD, present a single subject experimental design and demonstrate the data of the echoic acquisition during the teaching sessions. As a result, 338 articles were found and, with the application of the inclusion criteria, three were selected. The results corroborate the data in the literature that point out the deficit of studies to establish echoic as the main target of teaching in people with ASD. Most studies adopt echoic as a prompt for establishing other verbal behavior. Even if scarce, the articles indicate the effects of different procedures under the acquisition of the echoic behavior in people with ASD and with diversified initial repertories.
DOI: 10.6084/m9.figshare.11265929.v1
title: Testing discrepancies in the measurement of the acceleration of gravity in a physical pendulum experiment

description: Abstract After analysing results on the measurement of the acceleration of gravity using a physical pendulum in our teaching laboratory, we found that the value reported by the students is always higher than the theoretical expectations. In this article we analyze critically some of the students hypotheses for such displacement, and we perform an investigation of our own to detect what is leading to this result. We disregarded any flaw on the experimental procedure performed by the students, and instead, concluded that the miscalibration of the laboratory instruments was distorting the students measurements, leading to a ~ 5 % increase in the calculated value of the acceleration of gravity.