cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.9927530.v1
title: Does the implant-abutment interface interfere on marginal bone loss? A systematic review and meta-analysis

description: Abstract The objective of this systematic review was to compare the conical internal connection (IC) with the external hexagonal connection (EH) on the occurrence of marginal bone loss (ΔMBL). Different databases were used to carry out the selection of the elected studies. The studies were judged according to the risk of bias as “high”, “low” and “unclear” risk. For the meta-analysis we included only studies that could extract the data of ΔMBL, survival rate (SR) and probing depth (PD). No statistically significant differences were found for ΔMBL data at one, three- and five-year survival rates between implant connections (p &lt;0.05), however statistically significant differences were found for PD between EH and IC implants (1-year follow-up) -0.53 [95%CI -0.82 to -0.24, p = 0.0004]. This present systematic review demonstrated that there are no significant differences between IC and EH implants for both ΔMBL and SR at 1, 3 e 5 years after functional loading, although better PD values were observed for implants pertaining to the IC connections. Considering the high heterogeneity, more well-delineated, randomized clinical trials should be conducted.
DOI: 10.6084/m9.figshare.9927527.v1
title: Performance of common bean genotypes as a function of growing seasons and technological input levels1

description: ABSTRACT In Brazil, common bean (Phaseolus vulgaris L.) is cultivated in different growing seasons and environments, with different genotypes responses due to the genotype x environment interaction. This study aimed to identify common bean genotypes with a better production stability in each growing environment. The trials were conducted in a randomized block design, with three replications, involving three growing years, nine common bean genotypes and four environments (first and second growing seasons with high and low levels of technological input, such as fertilizers and pest and disease control). Biplot analyses were performed using the GGE Biplot software. The use of high levels of technological input results in an average increase of 14.4 % for yield and is more representative in the crop environments, as well as more adequate for genotype selection. IPR Campos Gerais, BRS Esplendor and BRS Campeiro showed a high stability and presented the best productive performance under both technological levels.
DOI: 10.6084/m9.figshare.9927506
title: Epistemological difficulties in implementing a teaching-learning sequence on the concept of mass

description: Abstract In this work, we show the results from a research made in a curricular innovation situation, whose main focus was to assess the performance of a teacher which implemented a teaching sequence on the concept of mass. This process began by a revision of the concept of mass in three different frameworks, namely classical mechanics, electromagnetism and relativity, with the purpose of addressing the epistemological changes of the subject from Newtonian mechanics to relativity. This revision yielded a written material about the theme and was employed in the development of the teaching sequence, which had as main methodology the Design Based Research. Our main research focus concerns the performance of the implementer teacher and his appropriation of the underlying didactic intention. In order to assess how effectively this teacher did absorb the intentions of the course he delivered, we relied on Chevallard’s Didactic Transposition Theory. Data were extracted from recordings of the teacher’s classes and the subsequent analysis has shown that there may be a relation between the difficulties he had in conveying the didactic intention and the innovative character of the contents involved. Our results indicate that these difficulties are directly related with the very nature of scientific knowledge and, in fact, belong to the realm of epistemology.
DOI: 10.6084/m9.figshare.9927503
title: Relationship between PDP maturity and ISO certification in the food industry

description: Abstract Food companies have been seeking certification of their Product Development Processes (PDP) as a symbol of quality, however, few are prepared to obtain it. One of the hypotheses is that some companies are not mature enough to obtain this certification and maintain it in the long term. To guarantee the product quality, it is important that all the activities responsible for the PDP are aligned, integrated, measured and controlled, thus characterizing the PDP maturity. Therefore, the aim of this work is to analyze the PDP maturity level of the food industry to identify the compatibility with the situation of their Quality Certifications. For this, an adapted method of the Capability Maturity Model Integration (CMMI) is used to measure the company’s maturity, seeking also to identify the status of their certifications. Information was collected from five companies in the food industry, which presented consistency between their certifications and maturity levels; four are level 1 and have no certification and one is level 2 and is certified by the International Organization for Standardization (ISO)
DOI: 10.6084/m9.figshare.9927506.v1
title: Epistemological difficulties in implementing a teaching-learning sequence on the concept of mass

description: Abstract In this work, we show the results from a research made in a curricular innovation situation, whose main focus was to assess the performance of a teacher which implemented a teaching sequence on the concept of mass. This process began by a revision of the concept of mass in three different frameworks, namely classical mechanics, electromagnetism and relativity, with the purpose of addressing the epistemological changes of the subject from Newtonian mechanics to relativity. This revision yielded a written material about the theme and was employed in the development of the teaching sequence, which had as main methodology the Design Based Research. Our main research focus concerns the performance of the implementer teacher and his appropriation of the underlying didactic intention. In order to assess how effectively this teacher did absorb the intentions of the course he delivered, we relied on Chevallard’s Didactic Transposition Theory. Data were extracted from recordings of the teacher’s classes and the subsequent analysis has shown that there may be a relation between the difficulties he had in conveying the didactic intention and the innovative character of the contents involved. Our results indicate that these difficulties are directly related with the very nature of scientific knowledge and, in fact, belong to the realm of epistemology.
DOI: 10.6084/m9.figshare.9927497
title: Herbicides for Rooted Aquatic Macrophytes

description: ABSTRACT: The aim of this study was to evaluate the effectiveness of glyphosate, 2,4-D, and diquat to control the aquatic macrophytes Brachiaria subquadripara, Hedychium coronarium, and Myriophyllum aquaticum under greenhouse conditions. The following herbicides and doses were used: glyphosate at 240, 720, 1,680, 2,640, 3,600, and 4,320 g a.e. ha-1, 2,4-D at 335, 1,005, 1,675, 2,345, and 3,015 g a.e. ha-1, diquat at 100, 200, 300, 400, 500, and 600 g a.i. ha-1, and a control with 10 replications. Sprayings were applied with a CO2-pressurized backpack sprayer at a constant pressure of 172.36 KPa, tips DG 11002, and spray solution consumption of 200 L ha-1. The effectiveness of control was evaluated visually at 3, 7, 15, 21, 30, 45, and 60 days after application (DAA) and dry matter accumulation at 60 DAA. Glyphosate promoted the best effectiveness, with 100% control of B. subquadripara, with no dry matter accumulation from 720 g a.e. ha-1. The herbicide 2,4-D presented the best control for M. aquaticum with 100% control from 1,209 g a.e. ha-1, and for H. coronarium with 99% control from 2.015 g a.e. ha-1, both doses with no dry matter accumulation. The diquat was not effective in controlling the plants of M. aquaticum and B. subquadripara, besides allowing resprouts.
DOI: 10.6084/m9.figshare.9927500
title: Determinants of oil palm smallholder farmers’ adaptation strategy to climate change in Bengkulu, Indonesia

description: Abstract Bengkulu is one of 10 provinces in Indonesia, which became a center of oil palm production. The aim of the study is to define how the determinant factors influence the oil palm smallholder farmer’s adaptation strategies on climate change in Bengkulu Province, Indonesia. Binary logistic regression method was employed to clarify the independent variables that influence farmers’ strategy adapted to climate change. Farmer experience and their household expenditure have the positive and significant effect on cropping diversification, while oil palm price has a positive influence in using land clearing without slash and burning. The factors that most influence the farmers' adaptation to climate change are farmer’s cooperation membership and membership of farmer group for agricultural extension. Because of their education and experience, they are not an important determinant on strategies adapted to climate change, but the farmer’s group for agricultural extension was very important in the adoption of comprehensive adaptation strategies to climate change, thus the understanding and skill of implementing strategies adapted to climate change among smallholder farmers needs improving by government extension agency. Therefore, ensuring access to information on climate change through extension agents is believed to create awareness and favorable conditions to adopt farming practices suited to climate change. It also means that improving the knowledge and skills of extension service personnel about climate change and adaptation strategies, and making the extension services more accessible to farmers is strongly recommended. For future work, new research involving more area with diversified ownership can be performed, not only smallholder farmer ownership but also private and state corporation ones. Moreover, the study about government action and policy for accelerating farmer's adaptation is important to be executed in the future.
DOI: 10.6084/m9.figshare.9927500.v1
title: Determinants of oil palm smallholder farmers’ adaptation strategy to climate change in Bengkulu, Indonesia

description: Abstract Bengkulu is one of 10 provinces in Indonesia, which became a center of oil palm production. The aim of the study is to define how the determinant factors influence the oil palm smallholder farmer’s adaptation strategies on climate change in Bengkulu Province, Indonesia. Binary logistic regression method was employed to clarify the independent variables that influence farmers’ strategy adapted to climate change. Farmer experience and their household expenditure have the positive and significant effect on cropping diversification, while oil palm price has a positive influence in using land clearing without slash and burning. The factors that most influence the farmers' adaptation to climate change are farmer’s cooperation membership and membership of farmer group for agricultural extension. Because of their education and experience, they are not an important determinant on strategies adapted to climate change, but the farmer’s group for agricultural extension was very important in the adoption of comprehensive adaptation strategies to climate change, thus the understanding and skill of implementing strategies adapted to climate change among smallholder farmers needs improving by government extension agency. Therefore, ensuring access to information on climate change through extension agents is believed to create awareness and favorable conditions to adopt farming practices suited to climate change. It also means that improving the knowledge and skills of extension service personnel about climate change and adaptation strategies, and making the extension services more accessible to farmers is strongly recommended. For future work, new research involving more area with diversified ownership can be performed, not only smallholder farmer ownership but also private and state corporation ones. Moreover, the study about government action and policy for accelerating farmer's adaptation is important to be executed in the future.
DOI: 10.6084/m9.figshare.9927503.v1
title: Relationship between PDP maturity and ISO certification in the food industry

description: Abstract Food companies have been seeking certification of their Product Development Processes (PDP) as a symbol of quality, however, few are prepared to obtain it. One of the hypotheses is that some companies are not mature enough to obtain this certification and maintain it in the long term. To guarantee the product quality, it is important that all the activities responsible for the PDP are aligned, integrated, measured and controlled, thus characterizing the PDP maturity. Therefore, the aim of this work is to analyze the PDP maturity level of the food industry to identify the compatibility with the situation of their Quality Certifications. For this, an adapted method of the Capability Maturity Model Integration (CMMI) is used to measure the company’s maturity, seeking also to identify the status of their certifications. Information was collected from five companies in the food industry, which presented consistency between their certifications and maturity levels; four are level 1 and have no certification and one is level 2 and is certified by the International Organization for Standardization (ISO)
DOI: 10.6084/m9.figshare.9927485
title: REMOVAL OF NITRATE FROM DRINKING WATER BY USING PdCu STRUCTURED CATALYSTS BASED ON CORDIERITE MONOLITHS

description: Abstract Structured catalysts were prepared, characterized and evaluated in NO3 - removal from drinking water. Different suspensions containing a previously optimized PdCu/5wt% ZrO2-Al2O3 powder catalyst (hereinafter PdCu/5ZAp) were prepared and deposited on cordierite monoliths by washcoating. The effect of suspension concentration, the particle size, the immersion number, the use of suspension stabilizer agent, and an alumina pre-coating on the coating adherence and catalytic performance were studied. All the prepared structured catalysts were active for the elimination of NO3 - and presented good selectivity to N2 (&gt; 93%) in synthetic water samples. The catalyst performance was related to the amount of deposited catalyst. The highest activity and the best coating adherence were obtained with the structured catalyst prepared by a single immersion in a 14 wt% concentration suspension, which was obtained from the powder catalyst milled for 10 h and stabilized with colloidal alumina. This catalyst also showed good activity when it was reused for four cycles and when it was evaluated with real water samples.
DOI: 10.6084/m9.figshare.9927497.v1
title: Herbicides for Rooted Aquatic Macrophytes

description: ABSTRACT: The aim of this study was to evaluate the effectiveness of glyphosate, 2,4-D, and diquat to control the aquatic macrophytes Brachiaria subquadripara, Hedychium coronarium, and Myriophyllum aquaticum under greenhouse conditions. The following herbicides and doses were used: glyphosate at 240, 720, 1,680, 2,640, 3,600, and 4,320 g a.e. ha-1, 2,4-D at 335, 1,005, 1,675, 2,345, and 3,015 g a.e. ha-1, diquat at 100, 200, 300, 400, 500, and 600 g a.i. ha-1, and a control with 10 replications. Sprayings were applied with a CO2-pressurized backpack sprayer at a constant pressure of 172.36 KPa, tips DG 11002, and spray solution consumption of 200 L ha-1. The effectiveness of control was evaluated visually at 3, 7, 15, 21, 30, 45, and 60 days after application (DAA) and dry matter accumulation at 60 DAA. Glyphosate promoted the best effectiveness, with 100% control of B. subquadripara, with no dry matter accumulation from 720 g a.e. ha-1. The herbicide 2,4-D presented the best control for M. aquaticum with 100% control from 1,209 g a.e. ha-1, and for H. coronarium with 99% control from 2.015 g a.e. ha-1, both doses with no dry matter accumulation. The diquat was not effective in controlling the plants of M. aquaticum and B. subquadripara, besides allowing resprouts.
DOI: 10.6084/m9.figshare.9927485.v1
title: REMOVAL OF NITRATE FROM DRINKING WATER BY USING PdCu STRUCTURED CATALYSTS BASED ON CORDIERITE MONOLITHS

description: Abstract Structured catalysts were prepared, characterized and evaluated in NO3 - removal from drinking water. Different suspensions containing a previously optimized PdCu/5wt% ZrO2-Al2O3 powder catalyst (hereinafter PdCu/5ZAp) were prepared and deposited on cordierite monoliths by washcoating. The effect of suspension concentration, the particle size, the immersion number, the use of suspension stabilizer agent, and an alumina pre-coating on the coating adherence and catalytic performance were studied. All the prepared structured catalysts were active for the elimination of NO3 - and presented good selectivity to N2 (&gt; 93%) in synthetic water samples. The catalyst performance was related to the amount of deposited catalyst. The highest activity and the best coating adherence were obtained with the structured catalyst prepared by a single immersion in a 14 wt% concentration suspension, which was obtained from the powder catalyst milled for 10 h and stabilized with colloidal alumina. This catalyst also showed good activity when it was reused for four cycles and when it was evaluated with real water samples.
DOI: 10.6084/m9.figshare.9927482
title: REMOVAL OF TRIBUTYL PHOSPHATE FROM AQUEOUS SOLUTIONS BY TiO2 HETEROGENEOUS PHOTOCATALYSIS SUPPORTED OVER A NEW METAL PLATE WITH KINETIC STUDY

description: Abstract The aim of this investigation was to study the degradation of tributyl phosphate (TBP) in aqueous solution by heterogeneous photocatalysis (UV-C/TiO2). To perform the investigation, aqueous solutions containing the contaminant were exposed to UV radiation in the absence or presence of TiO2 in suspension or supported on a Fe-Cr metal alloy plate. TBP analyses before and after the treatment were performed by Ultra-Performance Liquid Chromatography (UPLC) in order to quantify the contaminant degradation. The results showed that the TiO2 photocatalytic system was able to remove TBP from the solution and the formation of some by-products was observed. TiO2 photocatalytic systems were able to reduce acute toxicity in an Artemia Salina bioassay according to the increase in LC50 from 10.2 ± 0.5%(v/v) to 16.9 ± 0.6 %(v/v) for the immobilized system and to levels which were not possible to detect by the applied method any more for the suspension system.
DOI: 10.6084/m9.figshare.9927467
title: Determination of nutrient and energy values of cottonseed meal supplemented or not with phytase and protease for broiler chicks

description: ABSTRACT The objective of this study was to determine the nutritional and energy compositions of cottonseed meal (CM), with or without enzyme supplementation, for broilers at different ages. A total of 672 male Cobb 500 chickens were distributed into four metabolism and ileal-digestibility trials. The experimental design was completely randomized, with four treatments and six replicates. The following treatments were tested: a corn- and soybean meal-based control diet without enzymes; control diet with enzyme addition; control diet with 25% replaced by CM; and control diet with enzyme addition and 25% replaced by CM. The following variables were investigated: apparent metabolizable energy (AME); nitrogen-corrected AME (AMEn); apparent metabolizability coefficients of dry matter, gross energy, phosphorus, and calcium; apparent ileal digestibility coefficients of dry matter, crude protein, calcium, and phosphorus; and digestible protein of CM. Enzyme supplementation did not affect the energy values of CM. The average values obtained in the pre-starter, starter, grower, and finisher phases were 2,958; 2,554; 1,676, and 1,963 kcal kg-1 for AME and 2,519; 2,282; 1,423, and 1,680 kcal kg-1 for AMEn, respectively. Enzyme addition improves the apparent digestibility coefficients of phosphorus and calcium of cottonseed meal in the grower phase. However, enzyme supplementation does not affect the ileal digestibility coefficients of these ingredients in broilers.
DOI: 10.6084/m9.figshare.9927482.v1
title: REMOVAL OF TRIBUTYL PHOSPHATE FROM AQUEOUS SOLUTIONS BY TiO2 HETEROGENEOUS PHOTOCATALYSIS SUPPORTED OVER A NEW METAL PLATE WITH KINETIC STUDY

description: Abstract The aim of this investigation was to study the degradation of tributyl phosphate (TBP) in aqueous solution by heterogeneous photocatalysis (UV-C/TiO2). To perform the investigation, aqueous solutions containing the contaminant were exposed to UV radiation in the absence or presence of TiO2 in suspension or supported on a Fe-Cr metal alloy plate. TBP analyses before and after the treatment were performed by Ultra-Performance Liquid Chromatography (UPLC) in order to quantify the contaminant degradation. The results showed that the TiO2 photocatalytic system was able to remove TBP from the solution and the formation of some by-products was observed. TiO2 photocatalytic systems were able to reduce acute toxicity in an Artemia Salina bioassay according to the increase in LC50 from 10.2 ± 0.5%(v/v) to 16.9 ± 0.6 %(v/v) for the immobilized system and to levels which were not possible to detect by the applied method any more for the suspension system.
DOI: 10.6084/m9.figshare.9927467.v1
title: Determination of nutrient and energy values of cottonseed meal supplemented or not with phytase and protease for broiler chicks

description: ABSTRACT The objective of this study was to determine the nutritional and energy compositions of cottonseed meal (CM), with or without enzyme supplementation, for broilers at different ages. A total of 672 male Cobb 500 chickens were distributed into four metabolism and ileal-digestibility trials. The experimental design was completely randomized, with four treatments and six replicates. The following treatments were tested: a corn- and soybean meal-based control diet without enzymes; control diet with enzyme addition; control diet with 25% replaced by CM; and control diet with enzyme addition and 25% replaced by CM. The following variables were investigated: apparent metabolizable energy (AME); nitrogen-corrected AME (AMEn); apparent metabolizability coefficients of dry matter, gross energy, phosphorus, and calcium; apparent ileal digestibility coefficients of dry matter, crude protein, calcium, and phosphorus; and digestible protein of CM. Enzyme supplementation did not affect the energy values of CM. The average values obtained in the pre-starter, starter, grower, and finisher phases were 2,958; 2,554; 1,676, and 1,963 kcal kg-1 for AME and 2,519; 2,282; 1,423, and 1,680 kcal kg-1 for AMEn, respectively. Enzyme addition improves the apparent digestibility coefficients of phosphorus and calcium of cottonseed meal in the grower phase. However, enzyme supplementation does not affect the ileal digestibility coefficients of these ingredients in broilers.
DOI: 10.6084/m9.figshare.9927458
title: World Class University in the Latin American and Caribbean context: what the International Organizations say

description: ABSTRACT In this article we analyze what International Organizations and their experts say about the possibility of building and/or existence of the World Class Universities in Latin America and the Caribbean countries, with the objective of highlighting how the specificities of this model for those countries, that do not make up the dynamic axis of capital, are being outlined. Regarding this, we seek to understand the movement of this tendency from the places occupied by Latin American universities in the main international academic rankings. In methodological terms, bibliographical data and documentary analysis are used, considering that the research on the trends and manifestations of the World Class Universities presupposes the understanding of the historical and social totality.