cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.14279960
title: Postharvest durability of tomatoes with PVA covering

description: ABSTRACT Plastic packaging from petroleum derives used in the food industry represents serious environmental problems. Alternative solutions to these problems consist of the development of biodegradable packaging, such as films and edible coatings including the polyvinyl alcohol (PVA). In this research we evaluated the effect of the PVA application by two different techniques aiming to increase shelf life of ripe tomatoes, cultivar Carmen. The methodology of this study consisted in covering tomatoes with a PVA solution and also with PVA impregnated tracing paper. The different fruit lots were kept in polystyrene trays for 19 days on a laboratory bench at a controlled temperature of 25±3ºC. The fruit analyzes were compared to the control fruits without any treatment, being evaluated firmness, pH, titratable total acidity, mass loss, total soluble solids content, water activity and color determination of fruit surface. Among the different treatments, the PVA coating applied directly to the fruits contributed to control the firmness and the mass loss, as well as this treatment influenced the total soluble solids content, the luminosity and the red color of fruits with statistical difference compared to the control and covered with tracing paper (with or without PVA). The PVA coating solution applied directly on the fruits contributed to maintain the postharvest quality of the ripe tomatoes.
DOI: 10.6084/m9.figshare.14279960.v1
title: Postharvest durability of tomatoes with PVA covering

description: ABSTRACT Plastic packaging from petroleum derives used in the food industry represents serious environmental problems. Alternative solutions to these problems consist of the development of biodegradable packaging, such as films and edible coatings including the polyvinyl alcohol (PVA). In this research we evaluated the effect of the PVA application by two different techniques aiming to increase shelf life of ripe tomatoes, cultivar Carmen. The methodology of this study consisted in covering tomatoes with a PVA solution and also with PVA impregnated tracing paper. The different fruit lots were kept in polystyrene trays for 19 days on a laboratory bench at a controlled temperature of 25±3ºC. The fruit analyzes were compared to the control fruits without any treatment, being evaluated firmness, pH, titratable total acidity, mass loss, total soluble solids content, water activity and color determination of fruit surface. Among the different treatments, the PVA coating applied directly to the fruits contributed to control the firmness and the mass loss, as well as this treatment influenced the total soluble solids content, the luminosity and the red color of fruits with statistical difference compared to the control and covered with tracing paper (with or without PVA). The PVA coating solution applied directly on the fruits contributed to maintain the postharvest quality of the ripe tomatoes.
DOI: 10.6084/m9.figshare.14279968.v1
title: What “Have They Been Whispering in Verses”? Popular Activism against D. Miguel and Relations Between Brazil and Portugal. Torres Vedras, 1828-1834

description: ABSTRACT The aim of this article is to point out the links between the history of Portugal and Brazil, in the aftermath of Brazil’s independency, from the reign of D. Miguel (1828-1834) to D. Pedro IV’s victory in civil war. One of the purposes is to emphasize the role played by common Portuguese people who were persecuted by the forces of D. Miguel. Regarding the sources, the starting point is the inquiry which took place in Torres Vedras, Portugal, to punish crimes of sedition against the king who had been acclaimed by the traditional courts. Afterwards the focus will be on the lawsuits filed against ordinary people who were charged defending the legitimate right of D. Pedro I to the Portuguese throne and the legitimacy of the constitution of 1826, that was signed by the king of Brazil and granted Portugal.
DOI: 10.6084/m9.figshare.14279934
title: Resistance sources to root-knot nematodes Meloidogyne javanica, M. incognita and M. enterolobii in sweet potato

description: ABSTRACT One of the main obstacles for food production in many developing countries, as in Brazil, is the damage caused by root-knot nematodes, mainly those belonging to the genus Meloidogyne. This study aimed to assess the resistance levels of 44 sweet potato genotypes to M. javanica, M. incognita race 1 and M. enterolobii. These researches were carried out in 2014, under greenhouse conditions in Brasília-DF, Brazil. A completely randomized design with six replicates of one plant/plot/treatment was used. We determined the gall index (GI) and egg mass index (EMI) in the root system of each plant, the number of eggs and juveniles per gram of root with galls and the nematode reproduction factor. M. javanica was less aggressive and reproduced in only 9.09% of the evaluated genotypes; M. incognita race 1 was intermediate (47.73%); whereas M. enterolobii was more aggressive, with a population increase in 79.55% of the genotypes. The genotypes CNPH 1200, CNPH 1219, CNPH 1292, CNPH 1392, CNPH 60 and ‘Coquinho’ were the most resistant to the three species and can be used in breeding programs for multiple resistance to root-knot nematodes.
DOI: 10.6084/m9.figshare.14279968
title: What “Have They Been Whispering in Verses”? Popular Activism against D. Miguel and Relations Between Brazil and Portugal. Torres Vedras, 1828-1834

description: ABSTRACT The aim of this article is to point out the links between the history of Portugal and Brazil, in the aftermath of Brazil’s independency, from the reign of D. Miguel (1828-1834) to D. Pedro IV’s victory in civil war. One of the purposes is to emphasize the role played by common Portuguese people who were persecuted by the forces of D. Miguel. Regarding the sources, the starting point is the inquiry which took place in Torres Vedras, Portugal, to punish crimes of sedition against the king who had been acclaimed by the traditional courts. Afterwards the focus will be on the lawsuits filed against ordinary people who were charged defending the legitimate right of D. Pedro I to the Portuguese throne and the legitimacy of the constitution of 1826, that was signed by the king of Brazil and granted Portugal.
DOI: 10.6084/m9.figshare.14279970
title: Effects of artificial light sources on growth and phytochemicals content in green oak lettuce

description: ABSTRACT The artificial light source is one of the most important factors in a controlled environment for vegetable production. It could provide new opportunities to improve growth and increase phytochemicals content in vegetables. Therefore, this study focused on the effects of artificial light sources on growth and phytochemicals in green oak lettuce (Lactuca sativa). The plants were grown under growth chamber with three artificial light sources, namely bar-LED (the 1:1:1 ratio of blue 460 nm : red 630 nm : red 660 nm), bulb-LED (the 2:1:1 ratio of blue 460 nm : red 630 nm : red 660 nm), and fluorescent lamp (FL) (the wavelength range 380-700 nm) for 4 weeks. The quality of bar-LED light was better than either bulb-LED or FL, when assessed by the parameters of photosynthetically active radiation (PAR), photosynthetic photon flux density (PPFD, 400-700 nm), PPFD-B (blue, 400-500 nm), PPFD-R (red, 600-700 nm), the yield photon flux density (YPFD), and the color of red. However, shoot and root (fresh and dry mass), leaf area, leaf number, and shoot/root ratio did not significantly differ between plants grown under bar-LED and bulb-LED, but they were significantly higher than plants grown under FL. Bulb-LED and bar-LED induced larger dry mass of the plants than FL. The dry mass per mole of artificial lighting was highest in plants grown under bar-LED. On the other hand, the fresh mass per mole of artificial lighting was highest in plants grown under bulb-LED. As regards power consumption, bar-LED provided the lowest consumption with 44.4% energy saving over the FL. Total phenolic content, 2,2’-azino-bis (3-ethylbenzthiazoline-6-sulphonic acid) (ABTS) and 2,2-diphenylpicrylhydrazyl (DPPH) activities were highest in plants grown under bar-LED. FL lighting gave the least contents of chlorophyll a and chlorophyll a + b. However, chlorophyll b and carotenoid contents did not significantly differ among the treatments. Thus, the results suggested that bar-LED has the potential to improve energy saving, and both growth and phytochemicals content of green oak lettuce grown in a controlled environment of vegetable production.
DOI: 10.6084/m9.figshare.14279940.v1
title: Brokers In A Land Use Rights Sale Network. Rengo Valley, Chile, 1832-1860

description: ABSTRACT The article analyzes a land use rights sale network in a valley of Chile, in the period of formalization of rights (1832-1860). The behavior of brokers is examined from the notion of Structural Holes from the Social Network Analysis. Purchase and sale contracts and agricultural cadasters are studied, deducing that the brokers favored buying high value land from sellers with low participation in the network. The strategy paid off in a few brokers linked to the local public administration. The relevance of the finding is projected for the literature focused on the cycle: formalization of rights / peasant dispossession.
DOI: 10.6084/m9.figshare.14279972
title: Historical Thinking Operations of Young Students: a Study on the Concept of Evidence

description: Abstract In this article, we analyze the operations of young students’ historical thinking, seeking to emphasize the concept of “evidence”; an idea advocated by the field of History of Education. Through the production of written narratives, we investigate how adolescents appropriate historical references to support their opinions, to interpret substantive concepts, and to envision their own future. The study was carried out in a public State school located in Butantã, in São Paulo/SP, between May and June 2016. 106 students participated, between 12 and 16 years old, male and female, from the 8th and 9th years of Elementary School. The data were collected from a questionnaire and analyzed according to the assumptions of Grounded Theory with the aid of the IRAMUTEQ software. The results showed the difficulties of the young person in the process of constructing historical thought, denoting the complexity of this mental operation.
DOI: 10.6084/m9.figshare.14279958
title: The Actuation of Antônio Luis Cavalcanti de Albuquerque de Barros Barreto in the Sanitary Reform of Bahia (1924-1930)

description: ABSTRACT This study aims to analyze the professional trajectory of Antônio Luis Cavalcanti de Albuquerque de Barros Barreto, former Fellow of the Rockefeller Foundation and Inspector of the National Department of Public Health, in the Health Reform in Bahia, between 1924 and 1930. To understand this process, Reports and the doctor’s acceptance speech in the Sub-board of Health and Public Assistance, his card of Rockefeller, the memorial presented to the Faculty of Medicine of Bahia, the Archivos Paranaenses de Medicina and the Archivos Brasileiros de Medicina are used. From the contextualization of sources, it was understood that the role played by Barros Barreto was fundamental for the alignment of the actions developed in the state, with the influence of the health movement’s ideals from the second decade of the twentieth century and of the Rockefeller Foundation.
DOI: 10.6084/m9.figshare.14279976.v1
title: The “Library of the Impossible”: Mapping of the DPDC/DNP Editorial Production

description: ABSTRACT This article analyzes the Vargas government’s initial experience of state editorial production (1930-1945). The focus is on the work of the Department of Propaganda and Cultural Diffusion (DPDC)/National Department of Propaganda (DNP), the first political advertising agency of the 1930s to invest in publications. The main objective is to make a detailed mapping, in the archives and libraries collections, of the set of leaflets, books and magazines edited specifically by DPDC/DNP, something not accomplished by previous researches. As a result, it was possible to identify 88 different titles, representing approximately 81% of everything that this department produced.
DOI: 10.6084/m9.figshare.14279970.v1
title: Effects of artificial light sources on growth and phytochemicals content in green oak lettuce

description: ABSTRACT The artificial light source is one of the most important factors in a controlled environment for vegetable production. It could provide new opportunities to improve growth and increase phytochemicals content in vegetables. Therefore, this study focused on the effects of artificial light sources on growth and phytochemicals in green oak lettuce (Lactuca sativa). The plants were grown under growth chamber with three artificial light sources, namely bar-LED (the 1:1:1 ratio of blue 460 nm : red 630 nm : red 660 nm), bulb-LED (the 2:1:1 ratio of blue 460 nm : red 630 nm : red 660 nm), and fluorescent lamp (FL) (the wavelength range 380-700 nm) for 4 weeks. The quality of bar-LED light was better than either bulb-LED or FL, when assessed by the parameters of photosynthetically active radiation (PAR), photosynthetic photon flux density (PPFD, 400-700 nm), PPFD-B (blue, 400-500 nm), PPFD-R (red, 600-700 nm), the yield photon flux density (YPFD), and the color of red. However, shoot and root (fresh and dry mass), leaf area, leaf number, and shoot/root ratio did not significantly differ between plants grown under bar-LED and bulb-LED, but they were significantly higher than plants grown under FL. Bulb-LED and bar-LED induced larger dry mass of the plants than FL. The dry mass per mole of artificial lighting was highest in plants grown under bar-LED. On the other hand, the fresh mass per mole of artificial lighting was highest in plants grown under bulb-LED. As regards power consumption, bar-LED provided the lowest consumption with 44.4% energy saving over the FL. Total phenolic content, 2,2’-azino-bis (3-ethylbenzthiazoline-6-sulphonic acid) (ABTS) and 2,2-diphenylpicrylhydrazyl (DPPH) activities were highest in plants grown under bar-LED. FL lighting gave the least contents of chlorophyll a and chlorophyll a + b. However, chlorophyll b and carotenoid contents did not significantly differ among the treatments. Thus, the results suggested that bar-LED has the potential to improve energy saving, and both growth and phytochemicals content of green oak lettuce grown in a controlled environment of vegetable production.
DOI: 10.6084/m9.figshare.14279978
title: Cowpea and beet intercropping agro-economic dynamics under spatial arrangement and cowpea population density

description: ABSTRACT The objective of this work was to evaluate the effect of planting spatial arrangements between the cowpea and beet crops in intercropping and of cowpea population densities on the crop’s productivity and in the agro-economic efficiency of the association at two growing seasons. The experimental design was of randomised blocks with the treatments arranged in a 4 x 3 factorial scheme, in four replications. The first factor was constituted by three spatial arrangements between the component cultures (2:2, 3:3 and 4:4), formed by beet rows alternated with cowpea rows, while the second factor was constituted by the population densities of cowpea: 40, 60, 80 and 100% of the recommended population in single crop (RDSC). The production and its components were evaluated in the beet and cowpea. Apart from these characteristics, the following agro-economic indicators were also determined for each treatment: system productivity index (SPI), the land equivalent coefficient (LEC), and the monetary equivalent ratio (MER). The maximum production of commercial beet roots was obtained with 15.60 t ha-1 productivity at density of 61.82% of RDSC within the 4:4 arrangement, while the maximum yield of cowpea green grains of 2.23 t ha-1 was reached at density of 79.57% of RDSC within 2:2 spatial arrangement. The productivities of beet roots of extra A, extra AA and great types decreased with increasing cowpea population density, without any influence of the tested spatial arrangements. The maximum mean productivity of cowpea green pods of 1.74 t ha-1 was obtained at density of 87.47% of RDSC, reached within 2:2 spatial arrangement. The maximum economic efficiency of the cowpea-beet intercropping was obtained with MER of 1.11 at cowpea density of 100% of RDSC, irrespective of the spatial arrangement and growing season.
DOI: 10.6084/m9.figshare.14279978.v1
title: Cowpea and beet intercropping agro-economic dynamics under spatial arrangement and cowpea population density

description: ABSTRACT The objective of this work was to evaluate the effect of planting spatial arrangements between the cowpea and beet crops in intercropping and of cowpea population densities on the crop’s productivity and in the agro-economic efficiency of the association at two growing seasons. The experimental design was of randomised blocks with the treatments arranged in a 4 x 3 factorial scheme, in four replications. The first factor was constituted by three spatial arrangements between the component cultures (2:2, 3:3 and 4:4), formed by beet rows alternated with cowpea rows, while the second factor was constituted by the population densities of cowpea: 40, 60, 80 and 100% of the recommended population in single crop (RDSC). The production and its components were evaluated in the beet and cowpea. Apart from these characteristics, the following agro-economic indicators were also determined for each treatment: system productivity index (SPI), the land equivalent coefficient (LEC), and the monetary equivalent ratio (MER). The maximum production of commercial beet roots was obtained with 15.60 t ha-1 productivity at density of 61.82% of RDSC within the 4:4 arrangement, while the maximum yield of cowpea green grains of 2.23 t ha-1 was reached at density of 79.57% of RDSC within 2:2 spatial arrangement. The productivities of beet roots of extra A, extra AA and great types decreased with increasing cowpea population density, without any influence of the tested spatial arrangements. The maximum mean productivity of cowpea green pods of 1.74 t ha-1 was obtained at density of 87.47% of RDSC, reached within 2:2 spatial arrangement. The maximum economic efficiency of the cowpea-beet intercropping was obtained with MER of 1.11 at cowpea density of 100% of RDSC, irrespective of the spatial arrangement and growing season.
DOI: 10.6084/m9.figshare.14279972.v1
title: Historical Thinking Operations of Young Students: a Study on the Concept of Evidence

description: Abstract In this article, we analyze the operations of young students’ historical thinking, seeking to emphasize the concept of “evidence”; an idea advocated by the field of History of Education. Through the production of written narratives, we investigate how adolescents appropriate historical references to support their opinions, to interpret substantive concepts, and to envision their own future. The study was carried out in a public State school located in Butantã, in São Paulo/SP, between May and June 2016. 106 students participated, between 12 and 16 years old, male and female, from the 8th and 9th years of Elementary School. The data were collected from a questionnaire and analyzed according to the assumptions of Grounded Theory with the aid of the IRAMUTEQ software. The results showed the difficulties of the young person in the process of constructing historical thought, denoting the complexity of this mental operation.
DOI: 10.6084/m9.figshare.14279990.v1
title: Selection of Chilean potato clones for tuber yield, frying quality, plant vigor and vegetative cycle

description: ABSTRACT The objective of this study was to evaluate the yield potential, frying quality, plant vigor, and vegetative cycle of Chilean potato clones, aiming to identify those with potential to become new cultivars or to be used in breeding programs. The experiments were conducted in Pelotas-RS and Canoinhas-SC, Brazil, in spring 2017. A set of 37 advanced potato clones belonging to the Agricultural Research Institute of Chile (INIA) was compared to commercial cultivars Agata, Asterix and Atlantic. A randomized complete block design with three replications of two rows with 10 plants each was used. Tuber yield, frying quality, plant vigor and vegetative cycle traits were evaluated. The data were submitted to analysis of variance, test for grouping means, and the selection differential. In this set of clones there are some presenting superior quality in relation to marketable tuber yield and frying quality, but the vegetative cycle was not shorter nor plant vigor was lower. Clones CH 27 and CH 44 were the best for marketable tuber yield and frying quality at both locations.
DOI: 10.6084/m9.figshare.14279987
title: Potato production affected by fertilization methods, masses of seed tubers and water regimes

description: ABSTRACT Increasing potato yield while saving natural resources is a challenge for all those involved in the potato production chain. A field experiment was carried out in order to evaluate the effect of different levels of fertilization, mass of seed tubers and the water regime on the production of potato cv. Orchestra. We tested fertilization methods (F1= conventional fertilization; F2= fertigation according to the rate of absorption by the crop; F3= fertigation split into 3 applications), seed tuber mass (ST1= &lt;50 g; ST2= &gt;50 g), and water regimes [WR1= 50%; WR2= 100% replacement of crop evapotranspiration (ETc)]. The study was conducted using a split-plot randomized block design, with fertilizers in the plot and seed tuber mass in the subplot, with six replications. The highest tuber yields (48.18 t ha-1) and greatest potatoes (43.67 t ha-1) were obtained in the treatment F2 and for seed tuber masses &gt;50 g (48.61 and 42.78 t ha-1) under 100% ETc water regime. However, for plants subjected to 50% ETc, the factors fertilization and seed tuber mass caused no difference in tuber yield (P&gt;0.05). The highest water use efficiency (39.82 kg m-3 of water) was found under WR of 50% ETc for seed tuber masses &gt;50 g. The highest cover ratio was obtained with tubers under 100% ETc being 89 days the cycle duration. The fertilization method and seed tuber mass that positively influenced the studied variables were fertigation according to the culture absorption rate and seed tuber masses &gt;50 g for both water conditions (100% and 50% ETc).