cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.5671102.v1
title: Salinity reduces carbon assimilation and the harvest index of cassava plants (Manihot esculenta Crantz)

description: ABSTRACT. This study was developed to evaluate the effects of salinity on the growth and gas exchange of cassava plants, cultivar Verdinha. The four concentrations of NaCl (mM) were as follows: 0, 20, 40, and 60. Under salinity, the lowest concentration of Na+ ions was observed in the tuberous roots; however, the dry matter of tuberous roots was reduced with an application of just 20 mM NaCl. The harvest index was reduced 50% with the highest salt concentration. Salinity reduced carbon assimilation (A), stomatal conductance ( gs ), transpiration, and the instantaneous water use efficiency. The correlation between gs and A was high and positive, showing that stomatal movement was one of the responsible for the lower A. Under salt stress, there was an increase in intercellular CO2 concentration, indicating the impairment of carbon metabolism. Based on the reduction of dry matter of the tuberous roots (reduction of 81% under 60 mM NaCl), it was concluded that cassava is sensitive to salinity. The growth of shoots and the absorbing roots were minimally affected by salinity, even in the situation where A was reduced; therefore, the sensitivity of cassava was related to the high sensitivity of the tuberous roots to the ionic and/or osmotic effects of salinity. Thus, tuberous roots can be the target organ in studies that aim to improve the tolerance of cassava to salinity.
DOI: 10.6084/m9.figshare.5671081
title: REIT in Brazil: An opportunity of international diversification

description: ABSTRACT The benefits of international diversification have been modified by the continuous change in the correlations between markets. Real estate investment has a high potential as a diversifying asset in a portfolio. The aim of this paper is to analyze the diversification by investing in REITs and equities for an investor from Brazil. We build optimal portfolios out-of-sample using predictions of volatility, correlations and yields following the DCC and VAR-DCC methods for the BOVA11, Ifix and SPDR S&P500 indices, during the period from December 1, 2014 to October 30, 2015. Our results show that the VAR-DCC approach slightly improves the DCC and Plug-in approaches, and the Naïve strategy.
DOI: 10.6084/m9.figshare.5671081.v1
title: REIT in Brazil: An opportunity of international diversification

description: ABSTRACT The benefits of international diversification have been modified by the continuous change in the correlations between markets. Real estate investment has a high potential as a diversifying asset in a portfolio. The aim of this paper is to analyze the diversification by investing in REITs and equities for an investor from Brazil. We build optimal portfolios out-of-sample using predictions of volatility, correlations and yields following the DCC and VAR-DCC methods for the BOVA11, Ifix and SPDR S&P500 indices, during the period from December 1, 2014 to October 30, 2015. Our results show that the VAR-DCC approach slightly improves the DCC and Plug-in approaches, and the Naïve strategy.
DOI: 10.21227/q1q5-d663
title: A dataset for performance monitoring in the froth flotation

description: This dataset includes the labeled grade by the XRF analyzer and its related visual features and feed grades.It can be used for traing the performance monitoring model in the froth flotation.
DOI: 10.21227/92wp-xa03
title: A dataset for performance monitoring in the froth flotation

description: This dataset includes the labeled grade by the XRF analyzer and its related visual features and feed grades.It can be used for traing the performance monitoring model in the froth flotation.
DOI: 10.6084/m9.figshare.5671078
title: Rhizospheric activity of phytoremediation species in soil contaminated with picloram1

description: ABSTRACT Some plant species have the ability to stimulate the microbiota activity in the rhizosphere and thereby increase the herbicide degradation in the soil. This study aimed at evaluating the microbial activity of soils contaminated with picloram and pre-cultivated with phytoremediation species. The experimental design was completely randomized, with three replicates. The treatments were organized in a 5 x 2 factorial scheme, with the first factor being the types of cultivation (autoclaved and non-autoclaved soil without cultivation and soil from the rhizosphere of Urochloa brizantha, Panicum maximum and Zea mays) and the second factor referring to the absence or presence (240 g ha-1) of picloram. The evolved C-CO2, microbial biomass carbon and metabolic quotient were estimated. The herbicide altered the evolved C-CO2, however, it did not affect the microbial biomass carbon and the metabolic quotient in the rhizospheric soils of the species. The cultivation of Zea mays increased the rhizosphere activity. The three plant species affect the soil microbial activity, however, the cultivation of Panicum maximum and Urochloa brizantha cause a lower disturbance on the microbial population, if compared to Zea mays. The picloran application does not affect the biological quality of the soils studied.
DOI: 10.6084/m9.figshare.5671078.v1
title: Rhizospheric activity of phytoremediation species in soil contaminated with picloram1

description: ABSTRACT Some plant species have the ability to stimulate the microbiota activity in the rhizosphere and thereby increase the herbicide degradation in the soil. This study aimed at evaluating the microbial activity of soils contaminated with picloram and pre-cultivated with phytoremediation species. The experimental design was completely randomized, with three replicates. The treatments were organized in a 5 x 2 factorial scheme, with the first factor being the types of cultivation (autoclaved and non-autoclaved soil without cultivation and soil from the rhizosphere of Urochloa brizantha, Panicum maximum and Zea mays) and the second factor referring to the absence or presence (240 g ha-1) of picloram. The evolved C-CO2, microbial biomass carbon and metabolic quotient were estimated. The herbicide altered the evolved C-CO2, however, it did not affect the microbial biomass carbon and the metabolic quotient in the rhizospheric soils of the species. The cultivation of Zea mays increased the rhizosphere activity. The three plant species affect the soil microbial activity, however, the cultivation of Panicum maximum and Urochloa brizantha cause a lower disturbance on the microbial population, if compared to Zea mays. The picloran application does not affect the biological quality of the soils studied.
DOI: 10.6084/m9.figshare.5671072
title: Seed quality of common bean accessions under organic and conventional farming systems1

description: ABSTRACT Agrobiodiversity is essential for a sustainable food production, and the knowledge of the potential characteristics of landrace seeds may prompt farmers to adopt the habit of seed conservation for this species. This study aimed at categorizing landrace and commercial common bean (Phaseolus vulgaris L.) accessions, according to the physiological quality (viability and vigor) of seeds produced in the field, during two growing seasons, under organic and conventional farming systems. Germination percentage, field emergence, electrical conductivity, accelerated aging, cold test and seedling length were assessed. The landrace bean accessions exhibit diversity in the physiological seed quality, in terms of their viability and vigor. No differences were observed between the farming systems, in relation to the physiological quality of the seeds produced. The categorization of landrace common bean accessions allows to identify those with superior physiological seed quality.
DOI: 10.6084/m9.figshare.5671072.v1
title: Seed quality of common bean accessions under organic and conventional farming systems1

description: ABSTRACT Agrobiodiversity is essential for a sustainable food production, and the knowledge of the potential characteristics of landrace seeds may prompt farmers to adopt the habit of seed conservation for this species. This study aimed at categorizing landrace and commercial common bean (Phaseolus vulgaris L.) accessions, according to the physiological quality (viability and vigor) of seeds produced in the field, during two growing seasons, under organic and conventional farming systems. Germination percentage, field emergence, electrical conductivity, accelerated aging, cold test and seedling length were assessed. The landrace bean accessions exhibit diversity in the physiological seed quality, in terms of their viability and vigor. No differences were observed between the farming systems, in relation to the physiological quality of the seeds produced. The categorization of landrace common bean accessions allows to identify those with superior physiological seed quality.
DOI: 10.6084/m9.figshare.5671066
title: Histochemical changes during the ontogeny of malagueta and biquinho pepper seeds

description: ABSTRACT. This study aimed to evaluate the structural changes and reserve deposition of malagueta and biquinho pepper seeds and to determine their chemical composition during ontogeny. The fruits were collected 25, 40, 55, 70, 85, and 100 days after anthesis (DAA). After collection, the seeds were extracted and fixed in FAA 50 and then stored in 70% ethanol. Subsequently, the seeds were embedded in methacrylate (Historesin) and sectioned with a microtome. The sections were stained with Toluidine blue O for anatomical analysis and Xylidine Ponceau, Periodic acid Schiff (PAS) and Lugol’s iodine solution for histochemical analysis. Sections were made using a cryomicrotome for acid phloroglucinol staining and Sudan III tests. Progressive lignification of the seed coat cells was observed. Proteins and lipids were the main reserve compounds of malagueta and biquinho pepper seeds stored in the embryo and endosperm. Starch served as a transient reserve during embryo development. The lipid reserves were observed in embryo and endosperm cells from 25 until 100 DAA. At 100 DAA, the protein contents of the malagueta and biquinho pepper seeds were 0.33 and 0.62 g g-1 DM and the lipid contents were 0.30 and 0.25 g g-1 DM, respectively.
DOI: 10.6084/m9.figshare.5671066.v1
title: Histochemical changes during the ontogeny of malagueta and biquinho pepper seeds

description: ABSTRACT. This study aimed to evaluate the structural changes and reserve deposition of malagueta and biquinho pepper seeds and to determine their chemical composition during ontogeny. The fruits were collected 25, 40, 55, 70, 85, and 100 days after anthesis (DAA). After collection, the seeds were extracted and fixed in FAA 50 and then stored in 70% ethanol. Subsequently, the seeds were embedded in methacrylate (Historesin) and sectioned with a microtome. The sections were stained with Toluidine blue O for anatomical analysis and Xylidine Ponceau, Periodic acid Schiff (PAS) and Lugol’s iodine solution for histochemical analysis. Sections were made using a cryomicrotome for acid phloroglucinol staining and Sudan III tests. Progressive lignification of the seed coat cells was observed. Proteins and lipids were the main reserve compounds of malagueta and biquinho pepper seeds stored in the embryo and endosperm. Starch served as a transient reserve during embryo development. The lipid reserves were observed in embryo and endosperm cells from 25 until 100 DAA. At 100 DAA, the protein contents of the malagueta and biquinho pepper seeds were 0.33 and 0.62 g g-1 DM and the lipid contents were 0.30 and 0.25 g g-1 DM, respectively.
DOI: 10.6084/m9.figshare.5671057
title: Assessing bone thickness in the infrazygomatic crest area aiming the orthodontic miniplates positioning: a tomographic study

description: ABSTRACT Introduction: Due to the increasing use of miniplates for anchorage purposes in orthodontics, it is very important to know more about infrazigomatic crest anatomy (thickness), in adult patients. Objectives: Evaluate the infrazygomatic crest region thickness, in adult (male and female) patients. Methods: Cone-beam computerized tomography (CBCT) images from 40 patients were used to assess cross-sectional measurements of the infrazygomatic crest region. Measurement 1 considered thickness 2 mm above the distobuccal root of the permanent maxillary first molar, while measurement 2 was taken 2 mm above the first measurement. Results: The mean thickness of the infrazygomatic crest in males was 3.55 mm for measurement 1 and 2.84 mm for measurement 2, while in females these were 2.37 mm and 2.24 mm, respectively. Conclusion: The authors concluded that the overall mean thickness of the infrazygomatic crest was 2.49 mm with respect to measurement 1, and 2.29 mm for measurement 2, with no statistically significant differences between gender.
DOI: 10.6084/m9.figshare.5671057.v1
title: Assessing bone thickness in the infrazygomatic crest area aiming the orthodontic miniplates positioning: a tomographic study

description: ABSTRACT Introduction: Due to the increasing use of miniplates for anchorage purposes in orthodontics, it is very important to know more about infrazigomatic crest anatomy (thickness), in adult patients. Objectives: Evaluate the infrazygomatic crest region thickness, in adult (male and female) patients. Methods: Cone-beam computerized tomography (CBCT) images from 40 patients were used to assess cross-sectional measurements of the infrazygomatic crest region. Measurement 1 considered thickness 2 mm above the distobuccal root of the permanent maxillary first molar, while measurement 2 was taken 2 mm above the first measurement. Results: The mean thickness of the infrazygomatic crest in males was 3.55 mm for measurement 1 and 2.84 mm for measurement 2, while in females these were 2.37 mm and 2.24 mm, respectively. Conclusion: The authors concluded that the overall mean thickness of the infrazygomatic crest was 2.49 mm with respect to measurement 1, and 2.29 mm for measurement 2, with no statistically significant differences between gender.
DOI: 10.6084/m9.figshare.5671051
title: Psychometric Properties of Brief Screening Tests for Alcohol Use Disorders during Pregnancy in Argentina

description: Abstract Background Considering the physical, mental and behavioral problems related to fetal alcohol exposure, prenatal clinical guides suggest a brief evaluation of alcohol consumption during pregnancy to detect alcohol intake and to adjust interventions, if required. Even if any alcohol use should be considered risky during pregnancy, identifying women with alcohol use disorders is important because they could need a more specific intervention than simple advice to abstain. Most screening tests have been developed and validated in male populations and focused on the long-term consequences of heavy alcohol use, so they might be inappropriate to assess consumption in pregnant women. Objective To analyze the internal reliability and validity of the alcohol screening instruments Alcohol Use Disorders Identification Test (AUDIT), Alcohol Use Disorders IdentificationTest- Consumption (AUDIT-C), Tolerance, Worried, Eye-Opener, Amnesia and Cut-Down (TWEAK), Rapid Alcohol Problems Screen - Quantity Frequency (RAPSQF) and Tolerance, Annoyed, Cut-Down and Eye-Opener (T-ACE) to identify alcohol use disorders in pregnant women. Methods A total of 641 puerperal women were personally interviewed during the 48 hours after delivery. The receiver operating characteristics (ROC) curves and the sensitivity and specificity of each instrument using different cut-off points were analyzed. Results All instruments showed areas under the ROC curves above 0.80. Larger areas were found for the TWEAK and the AUDIT. The TWEAK, the T-ACE and the AUDIT-C showed higher sensitivity, while the AUDIT and the RAPS-QF showed higher specificity. Reliability (internal consistency) was low for all instruments, improving when optimal cut-off points were used, especially for the AUDIT, the AUDIT-C and the RAPS-QF. Conclusions In other cultural contexts, studies have concluded that T-ACE and TWEAK are the best instruments to assess pregnant women. In contrast, our results evidenced the low reliability of those instruments and a better performance of the AUDIT in this population.
DOI: 10.6084/m9.figshare.5671051.v1
title: Psychometric Properties of Brief Screening Tests for Alcohol Use Disorders during Pregnancy in Argentina

description: Abstract Background Considering the physical, mental and behavioral problems related to fetal alcohol exposure, prenatal clinical guides suggest a brief evaluation of alcohol consumption during pregnancy to detect alcohol intake and to adjust interventions, if required. Even if any alcohol use should be considered risky during pregnancy, identifying women with alcohol use disorders is important because they could need a more specific intervention than simple advice to abstain. Most screening tests have been developed and validated in male populations and focused on the long-term consequences of heavy alcohol use, so they might be inappropriate to assess consumption in pregnant women. Objective To analyze the internal reliability and validity of the alcohol screening instruments Alcohol Use Disorders Identification Test (AUDIT), Alcohol Use Disorders IdentificationTest- Consumption (AUDIT-C), Tolerance, Worried, Eye-Opener, Amnesia and Cut-Down (TWEAK), Rapid Alcohol Problems Screen - Quantity Frequency (RAPSQF) and Tolerance, Annoyed, Cut-Down and Eye-Opener (T-ACE) to identify alcohol use disorders in pregnant women. Methods A total of 641 puerperal women were personally interviewed during the 48 hours after delivery. The receiver operating characteristics (ROC) curves and the sensitivity and specificity of each instrument using different cut-off points were analyzed. Results All instruments showed areas under the ROC curves above 0.80. Larger areas were found for the TWEAK and the AUDIT. The TWEAK, the T-ACE and the AUDIT-C showed higher sensitivity, while the AUDIT and the RAPS-QF showed higher specificity. Reliability (internal consistency) was low for all instruments, improving when optimal cut-off points were used, especially for the AUDIT, the AUDIT-C and the RAPS-QF. Conclusions In other cultural contexts, studies have concluded that T-ACE and TWEAK are the best instruments to assess pregnant women. In contrast, our results evidenced the low reliability of those instruments and a better performance of the AUDIT in this population.
DOI: 10.6084/m9.figshare.5671042
title: The Impact of a “Doctor-Patient Relationship” Discipline on Patient-Centred Attitudes

description: ABSTRACT Several studies have demonstrated that medical students’ attitudes toward patient-centred care tend to decline throughout undergraduate education. At present, the adequate translation of the communication skills among medical students into clinical practice remains a challenge. Regardless of the increased efforts of educators to improve the provision of patient care, learning to communicate as a professional physician remains a complex process. Objectives To evaluate the impact of the “doctor-patient relationship” discipline on medical students’ attitudes towards patient-centred care, and to examine whether variables related to demographic characteristics and different stages of education are associated to medical student’s patient-centred attitudes. Methods Two-hundred and seventy nine medical students who responded a Patient-Practitioner Orientation Scale (PPOS), a validated instrument exploring attitudes towards the doctor-patient relationship were enrolled: 128 (45.9%) who attended the “Doctor-Patient Relationship” discipline and 151 (54.1%) volunteer students, matched by sex and age, who have not taken the discipline. Multiple linear regression analyses were used to quantify the independent association between PPOS scores (overall PPOS, ‘sharing’ and ‘caring’ dimensions), demographic variables and year of medical school. Logistic models were created to quantify the independent association between the “doctor-patient relationship” discipline and PPOS and the sub-scales scores. Results In the linear regression analysis, female gender (p ≤ 0.01), older age (p ≤ 0.02) and earliest years of medical school (p ≤ 0.02) were significantly associated with more patient-centred attitudes. Higher score on the ‘sharing’ sub-scale was independently associated with attending the “doctor-patient relationship” discipline (4.50 ± 0.65 for those who have studied the discipline vs. 4.33 ± 0.65 for those who have not studied the discipline, p = 0.03) after adjustment, in logistic models, for student’s age, gender and years on the medical course. Medical educators should be focused on innovative strategies that stimulate humanistic attitudes, improve communication skills and truly change medical students’ behaviour towards patient-centred care.
DOI: 10.6084/m9.figshare.5671042.v1
title: The Impact of a “Doctor-Patient Relationship” Discipline on Patient-Centred Attitudes

description: ABSTRACT Several studies have demonstrated that medical students’ attitudes toward patient-centred care tend to decline throughout undergraduate education. At present, the adequate translation of the communication skills among medical students into clinical practice remains a challenge. Regardless of the increased efforts of educators to improve the provision of patient care, learning to communicate as a professional physician remains a complex process. Objectives To evaluate the impact of the “doctor-patient relationship” discipline on medical students’ attitudes towards patient-centred care, and to examine whether variables related to demographic characteristics and different stages of education are associated to medical student’s patient-centred attitudes. Methods Two-hundred and seventy nine medical students who responded a Patient-Practitioner Orientation Scale (PPOS), a validated instrument exploring attitudes towards the doctor-patient relationship were enrolled: 128 (45.9%) who attended the “Doctor-Patient Relationship” discipline and 151 (54.1%) volunteer students, matched by sex and age, who have not taken the discipline. Multiple linear regression analyses were used to quantify the independent association between PPOS scores (overall PPOS, ‘sharing’ and ‘caring’ dimensions), demographic variables and year of medical school. Logistic models were created to quantify the independent association between the “doctor-patient relationship” discipline and PPOS and the sub-scales scores. Results In the linear regression analysis, female gender (p ≤ 0.01), older age (p ≤ 0.02) and earliest years of medical school (p ≤ 0.02) were significantly associated with more patient-centred attitudes. Higher score on the ‘sharing’ sub-scale was independently associated with attending the “doctor-patient relationship” discipline (4.50 ± 0.65 for those who have studied the discipline vs. 4.33 ± 0.65 for those who have not studied the discipline, p = 0.03) after adjustment, in logistic models, for student’s age, gender and years on the medical course. Medical educators should be focused on innovative strategies that stimulate humanistic attitudes, improve communication skills and truly change medical students’ behaviour towards patient-centred care.
DOI: 10.6084/m9.figshare.5671039
title: Length-weight and length-length relationships for rockpool fishes on the Brazilian coast

description: Abstract Fifty-nine length-weight (LWR) and length-length (LLR) relationships were estimated for 18 fish species, belonging to 10 families. The fish specimens were captured in rockpools of 21 sites along a stretch of 4,900 km of the Brazilian coast, between latitudes 00° and 22°S, in 2012. This study represents the first reference available for five fish species (Gobiesox barbatulus, Bathygobius geminatus, Labrisomus nuchipinnis, Malacoctenus delalandii, Lutjanus alexandrei) in LLR and six (Gobiesox barbatulus, Bathygobius geminatus, Hypleurochilus fissicornis, Omobranchus punctatus, Entomacrodus vomerinus, Diplodus argenteus) in LWR.