cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7244198.v1
title: Influence of different compacting methods on concrete compressive strength

description: ABSTRACT Adequate compacting is an important stage contributing for the durability and final quality of concrete structures. The two main ways of compacting concrete are: manual and mechanical (immersion vibrator). This paper has the goal of verifying the influence of those two compacting methods on the compressive strength of concrete from long term data. In order to do that, cylindrical test specimens of a same concrete were molded with different compacting methods and the compressive strength was investigated at 1, 3 , 7, 14, 21, 28, 63, 91, 180, 365 and 730 days. Concrete used was casted in plant. Manual compacting was performed using a metallic and cylindrical rod. Mechanical compacting was performed using a rigid immersion vibrator driven by an electric motor. This study confirmed greater compressive strength in test specimens compacted with immersion vibrator, when compared with results in manually compacted test specimens. However, the novelty of this article is that variance analysis test demonstrated that only from 63 days the difference between compressive strengths is significant. Long term data also made it possible to generate a trend equation with good coefficient of determination for estimating the difference between compressive strengths for the two compacting methods investigated over time.
DOI: 10.6084/m9.figshare.7244201.v1
title: Experimental analysis of post-installed corbels with adhesive anchors

description: ABSTRACT The greater difficulty in the use of precast structures is related to the connections, which can be complex and costly depending on the design, opposing one of the main advantages of this constructive system, the speed. Then, the search for simpler and more economical solutions corresponds to one of the most important principles of the project. Thus, one of the alternatives to be considered during the project to improve the simplicity in the column production is to avoid holes and cuts in the formwork. The main aim of this paper is to study the alternative of using chemical adhesive for fastening the corbel reinforcement after casting the column. It was developed an experimental program with 3 tests full scale specimens with equal dimensions short corbels. Were tested 2 post-installed corbels with the main tie reinforcement fastened with adhesive anchor and 1 cast in corbel with the main tie reinforcement anchored with hooked 90 º bars. The cast in corbel (specimen A) was designed according to the recommendations of the standards NBR6118:2014 e NBR9062:2006, 1 post-installed corbel (specimen B) was designed with the same anchorage length of the cast in corbel and the other post-installed corbel was designed according to the recommendations of the chemical adhesive producer. This way, was possible evaluate by comparing the models that the anchorage length did not influence the corbel behavior during the test. The specimen A presented the ultimate load of 400 kN, specimen B 340 kN and specimen C 377 kN was possible evaluate the influence of the anchorage length in the corbel behavior and the safety of the solution comparing with a cast in corbel. All of the specimens presented failure by flexure-tension in a ductile manner and ultimate loads higher than foreseen by standards and calculation models. The post-installed corbels presented a satisfactory mechanical behavior and can be considered as a viable alternative.
DOI: 10.6084/m9.figshare.7244192
title: Influence of Climate Variability on Erosivity in Belém (PA)

description: Abstract The Universal Soil Loss Equation (USLE) is a model in which soil loss is the product of several indices, including rainfall erosivity (R). This factor identifies when the greatest risk of water erosion occurs. The objective of this study was to analyze the influence of ENOS (El Niño Southern Oscillation) and Atlantic Dipole on the R factor in Belém (PA). Erosivities from 1986 to 2015 were classified according to intensity. ENSO events were also classified to evaluate a possible influence of their amplitude. The Niño Oscillation Index (ION) was used to verify the occurrence of ENSO. In order to analyze the Atlantic Dipole, the TNA (Tropical Northern Atlantic) and TSA (Tropical Southern Atlantic) indices were used, because this phenomenon directly interferes in the region’s main atmospheric system, the Intertropical Convergence Zone (ZCIT). Pearson correlation analysis and linear regression were determined between R and climatic indexes. Thus, lower erosivities were observed in years of intense El Niño, obtaining higher correlation coefficients. Coincidence of intense La Niña with Negative Dipole also represented higher correlation coefficients, meaning the increase of erosivity. There was a weak correlation of erosivity during Positive Dipole.
DOI: 10.6084/m9.figshare.7244195
title: Influence of Pulmonary Rehabilitation on Clinical Characteristics in Patients with Chronic Heart Failure and Chronic Obstructive Pulmonary Disease

description: Abstract Background: The improvement of treatment strategies in patients with chronic obstructive pulmonary disease (COPD) and especially with comorbid pathology should provide rational conversion of standard schemes of therapy and rehabilitation in accordance with their clinical, pathogenic, functional and economic feasibility. Objective: To assess the influence of pulmonary rehabilitation on clinical characteristics in patients with chronic heart failure (CHF) and concomitant COPD. Methods: The study included 102 patients with CHF and concomitant COPD (males, 62%; mean age, 68.2 ± 4.5 years). All patients were divided into two groups: control group (CG) (n = 54), received only standard therapy of CHF and COPD; and intervention group (IG) (n = 48) were additionally taught the full yogic breathing as a program of pulmonary rehabilitation. Calculation of points by clinical evaluation scale (CES), assessment of CHF functional class (FC) (NYHA) and 6-minute walk test (6MWT - with the evaluation of dyspnea by the Borg scale) were performed in all patients on admission to the department and at discharge. Significant association was defined by p value &lt; 0.05. Results: At baseline, there were no significant differences in clinical characteristics of the patients and studied parameters between the groups. At discharge both groups showed significant reduction of dyspnea by the Borg scale (in CG: from 7.2 ± 0.8 points to 5.2 ± 0.3; in IG: from 7.4 ± 0.6 points to 3.2 ± 0.4), the number of points by CES (in CG: from 10.8 ± 0.3 points to 7.2 ± 0.4; in IG: from 10.7 ± 0.6 points to 5.9 ± 0.6). Increase in exercise tolerance (by the distance of 6MWT) was observed in both groups (in CG: from 215 ± 24 m to 275 ± 22 m; in IG: from 219 ± 21 m to 308 ± 24 m). The changes were more significant in IG compared to CG. We observed the prominent decrease in CHF FC and length of hospital stay in IG. Conclusions: Application of full yogic breathing as the program of pulmonary rehabilitation in addition to standard therapy of the patients with CHF and COPD is associated with a significant decrease in CHF FC, an increase in exercise tolerance and a reduced length of hospital stay.
DOI: 10.6084/m9.figshare.7244195.v1
title: Influence of Pulmonary Rehabilitation on Clinical Characteristics in Patients with Chronic Heart Failure and Chronic Obstructive Pulmonary Disease

description: Abstract Background: The improvement of treatment strategies in patients with chronic obstructive pulmonary disease (COPD) and especially with comorbid pathology should provide rational conversion of standard schemes of therapy and rehabilitation in accordance with their clinical, pathogenic, functional and economic feasibility. Objective: To assess the influence of pulmonary rehabilitation on clinical characteristics in patients with chronic heart failure (CHF) and concomitant COPD. Methods: The study included 102 patients with CHF and concomitant COPD (males, 62%; mean age, 68.2 ± 4.5 years). All patients were divided into two groups: control group (CG) (n = 54), received only standard therapy of CHF and COPD; and intervention group (IG) (n = 48) were additionally taught the full yogic breathing as a program of pulmonary rehabilitation. Calculation of points by clinical evaluation scale (CES), assessment of CHF functional class (FC) (NYHA) and 6-minute walk test (6MWT - with the evaluation of dyspnea by the Borg scale) were performed in all patients on admission to the department and at discharge. Significant association was defined by p value &lt; 0.05. Results: At baseline, there were no significant differences in clinical characteristics of the patients and studied parameters between the groups. At discharge both groups showed significant reduction of dyspnea by the Borg scale (in CG: from 7.2 ± 0.8 points to 5.2 ± 0.3; in IG: from 7.4 ± 0.6 points to 3.2 ± 0.4), the number of points by CES (in CG: from 10.8 ± 0.3 points to 7.2 ± 0.4; in IG: from 10.7 ± 0.6 points to 5.9 ± 0.6). Increase in exercise tolerance (by the distance of 6MWT) was observed in both groups (in CG: from 215 ± 24 m to 275 ± 22 m; in IG: from 219 ± 21 m to 308 ± 24 m). The changes were more significant in IG compared to CG. We observed the prominent decrease in CHF FC and length of hospital stay in IG. Conclusions: Application of full yogic breathing as the program of pulmonary rehabilitation in addition to standard therapy of the patients with CHF and COPD is associated with a significant decrease in CHF FC, an increase in exercise tolerance and a reduced length of hospital stay.
DOI: 10.7284/135140
title: Water Temperature data collected during research cruise SKQ201912S using a Sea-Bird SBE-38 instrument system onboard the platform RV Sikuliaq

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7244192.v1
title: Influence of Climate Variability on Erosivity in Belém (PA)

description: Abstract The Universal Soil Loss Equation (USLE) is a model in which soil loss is the product of several indices, including rainfall erosivity (R). This factor identifies when the greatest risk of water erosion occurs. The objective of this study was to analyze the influence of ENOS (El Niño Southern Oscillation) and Atlantic Dipole on the R factor in Belém (PA). Erosivities from 1986 to 2015 were classified according to intensity. ENSO events were also classified to evaluate a possible influence of their amplitude. The Niño Oscillation Index (ION) was used to verify the occurrence of ENSO. In order to analyze the Atlantic Dipole, the TNA (Tropical Northern Atlantic) and TSA (Tropical Southern Atlantic) indices were used, because this phenomenon directly interferes in the region’s main atmospheric system, the Intertropical Convergence Zone (ZCIT). Pearson correlation analysis and linear regression were determined between R and climatic indexes. Thus, lower erosivities were observed in years of intense El Niño, obtaining higher correlation coefficients. Coincidence of intense La Niña with Negative Dipole also represented higher correlation coefficients, meaning the increase of erosivity. There was a weak correlation of erosivity during Positive Dipole.
DOI: 10.6084/m9.figshare.7244189
title: First record of the chemical composition of essential oil of Piper bellidifolium, Piper durilignum, Piper acutilimbum and Piper consanguineum from the Brazilian Amazon forest

description: ABSTRACT Piper bellidifolium, Piper durilignum, Piper acutilimbum and Piper consanguineum are bushes that occur in the Amazon and are morphologically similar. With the aim of analyzing the chemical profile of the volatile constituents of these species, essential oils from the leaves were obtained through steam distillation and analyzed using gas chromatography-flame ionization detection (GC-FID) and gas chromatograph coupled to a mass spectrometer (GC-MS). The chemical analysis enabled the identification of 95 compounds representing 96.3 ± 0.6% of the P. bellidifolium oil, 95.5 ± 0.71% of the P. durilignum oil, 98.0 ± 1.0% of the P. acutilimbum oil and 96.1 ± 2.1% of the P. consanguineum oil. Although sesquiterpenes were the predominant chemical class in the oils of the four species, qualitative and quantitative differences were found in their chemical composition. The major constituents were (E)-nerolidol (20.3 ± 0.4%) in the P. bellidifolium oil, germacrene D (11.1 ± 0.3%) in the P. durilignum oil, and γ-eudesmol in both the P. consanguineum (18.6 ± 0.5%) and P. acutilimbum (7.5 ± 0.4%) oils. Despite their morphological similarity, a principal component analysis (PCA) of the GC-MS data clearly separated the four species according to the chemical profile of the essential oil extracted from their leaves.
DOI: 10.6084/m9.figshare.7244189.v1
title: First record of the chemical composition of essential oil of Piper bellidifolium, Piper durilignum, Piper acutilimbum and Piper consanguineum from the Brazilian Amazon forest

description: ABSTRACT Piper bellidifolium, Piper durilignum, Piper acutilimbum and Piper consanguineum are bushes that occur in the Amazon and are morphologically similar. With the aim of analyzing the chemical profile of the volatile constituents of these species, essential oils from the leaves were obtained through steam distillation and analyzed using gas chromatography-flame ionization detection (GC-FID) and gas chromatograph coupled to a mass spectrometer (GC-MS). The chemical analysis enabled the identification of 95 compounds representing 96.3 ± 0.6% of the P. bellidifolium oil, 95.5 ± 0.71% of the P. durilignum oil, 98.0 ± 1.0% of the P. acutilimbum oil and 96.1 ± 2.1% of the P. consanguineum oil. Although sesquiterpenes were the predominant chemical class in the oils of the four species, qualitative and quantitative differences were found in their chemical composition. The major constituents were (E)-nerolidol (20.3 ± 0.4%) in the P. bellidifolium oil, germacrene D (11.1 ± 0.3%) in the P. durilignum oil, and γ-eudesmol in both the P. consanguineum (18.6 ± 0.5%) and P. acutilimbum (7.5 ± 0.4%) oils. Despite their morphological similarity, a principal component analysis (PCA) of the GC-MS data clearly separated the four species according to the chemical profile of the essential oil extracted from their leaves.
DOI: 10.7284/135114
title: ADCP (Acoustic Doppler Current Profiler) data collected during research cruise SKQ201913T using a Hawaii UHDAS instrument system onboard the platform RV Sikuliaq

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7244186
title: Assess of hollow clay block masonry wallets under high temperature

description: ABSTRACT The main goal of this study was the behavioral assessment at high temperatures of masonry wallets built with different geometries of hollow clay blocks. In total, four type of structural wallets were erected; blocks of 15 x 20 x 30 cm nominal dimensions (width x height x length) and compressive strength of 7, 10, 15 and 18 MPa were built, employing laying mortar with compression resistance of 6, 8 ,10 and 12 MPa, respectively. The wallets were submitted to a constant temperature of 900°C, up to 4 hours, while heated gases permeability, thermal insulation and mechanical resistance were assessed. As conclusions, it was possible to observe that some wallets demonstrated the best thermal insulation performance, above 4 hours. Regarding the mechanical resistance and the gas permeability, none of the wallets analyzed reached the flexural criteria established for the work.
DOI: 10.6084/m9.figshare.7244180
title: Procedure for detecting tobamovirus in tomato and pepper seeds decreases the cost analysis

description: ABSTRACT The transmission of tobamovirus by tomato and pepper seeds is an important mean of virus introduction in crops. Therefore, detecting its presence in the seed becomes essential for the preventive control of virus diseases. In this study, a method was proposed for the detection of Tobacco mosaic virus (TMV) and Tomato mosaic virus (ToMV) in tomatoes (Solanum lycopersicum) and Pepper mild mottle virus (PMMoV) in pepper (Capsicum annum) seeds. Seed lots with different levels of incidence were analyzed by biological, serological, and molecular methods. Using DAS-ELISA technique, it was possible to detect TMV up to the limit rate of 1:170 (1 contaminated seed: total seeds) and the ToMV up to 1:200 in tomato seeds; PMMoV in pepper seeds was detected up to 1:140. The IC-RT-PCR detected the TMV and ToMV up to the limit of 1:400 and PMMoV up to the limit of 1:300. The assembled lots containing only 1 contaminated seed in 1000 (1:1000) were combined into 30 sub lots for DAS-ELISA analysis and 10 sub lots for IC-RT-PCR analysis. Both techniques, DAS-ELISA and IC-RT-PCR, were efficient to detect the three viruses in all analyzed samples, but the detection of tobamoviruses with RT-PCR and biological tests was not reliable. Based on the results of this study, in which a combination of seeds in sub lots was made to reduce the number of tests performed, it is possible to make significant savings in the cost of the diagnostic methods routinely conducted in official laboratories, with high efficiency and reliability.
DOI: 10.6084/m9.figshare.7244183
title: Study of water treatment sludge incorporation into interlocking concrete pavers

description: ABSTRACT The sludge generated in the water treatment plants is the result of several operations that aim the adequacy of water to the legal standards of potability. Although there are alternatives for water treatment sludge, the usual final disposal solutions, as direct discharge into watercourses, still represent large impacts and overload the systems involved. The present paper aims to evaluate the technical viability of the incorporation of sludge from water treatment plants into interlocking concrete pavers. The influence of sludge moisture on the concrete behavior was also evaluated. Interlocking concrete pavers with cement mass contents of 2.5%, 5.0% and 7.5% of sludge at its natural moisture and 5.0% of dried sludge were evaluated by tests of compression strength, tensile strength by flexion, voids index, water absorption and density. The results showed that contents of up to 5.0% of addition do not generate significant changes in the properties of the concrete. Therefore, it would be possible to add sludge from water treatment plants in on interlocking concrete pavers, since limited to low levels. The incorporation of industrial waste into building materials is a viable alternative to minimize the environmental liabilities resulting from processes of production and treatment of other materials.
DOI: 10.6084/m9.figshare.7244183.v1
title: Study of water treatment sludge incorporation into interlocking concrete pavers

description: ABSTRACT The sludge generated in the water treatment plants is the result of several operations that aim the adequacy of water to the legal standards of potability. Although there are alternatives for water treatment sludge, the usual final disposal solutions, as direct discharge into watercourses, still represent large impacts and overload the systems involved. The present paper aims to evaluate the technical viability of the incorporation of sludge from water treatment plants into interlocking concrete pavers. The influence of sludge moisture on the concrete behavior was also evaluated. Interlocking concrete pavers with cement mass contents of 2.5%, 5.0% and 7.5% of sludge at its natural moisture and 5.0% of dried sludge were evaluated by tests of compression strength, tensile strength by flexion, voids index, water absorption and density. The results showed that contents of up to 5.0% of addition do not generate significant changes in the properties of the concrete. Therefore, it would be possible to add sludge from water treatment plants in on interlocking concrete pavers, since limited to low levels. The incorporation of industrial waste into building materials is a viable alternative to minimize the environmental liabilities resulting from processes of production and treatment of other materials.
DOI: 10.6084/m9.figshare.7244186.v1
title: Assess of hollow clay block masonry wallets under high temperature

description: ABSTRACT The main goal of this study was the behavioral assessment at high temperatures of masonry wallets built with different geometries of hollow clay blocks. In total, four type of structural wallets were erected; blocks of 15 x 20 x 30 cm nominal dimensions (width x height x length) and compressive strength of 7, 10, 15 and 18 MPa were built, employing laying mortar with compression resistance of 6, 8 ,10 and 12 MPa, respectively. The wallets were submitted to a constant temperature of 900°C, up to 4 hours, while heated gases permeability, thermal insulation and mechanical resistance were assessed. As conclusions, it was possible to observe that some wallets demonstrated the best thermal insulation performance, above 4 hours. Regarding the mechanical resistance and the gas permeability, none of the wallets analyzed reached the flexural criteria established for the work.
DOI: 10.6084/m9.figshare.7244177
title: Diallel analysis and inbreeding depression in agronomic and technological traits of cotton genotypes

description: ABSTRACT Cotton provides about 90% of the world textile fiber, and is one of the crops of greater industrial relevance. The objectives of this study were to estimate the inbreeding depressionand the genetic effects involved in the control of the agronomic andfiber quality traits in F1 and F2 generations and to identify promising hybrids for obtaining superior cotton genotypes. Two cultivars of upland cotton and two moco (Brazilian endemic) cotton were crossed using a half-diallel scheme. The following traits were evaluated: percentage of fibers and weight of one boll, fiber length, fiber uniformity, short fiber index, fiber strength, and micronaire index. The additive genetic effects are predominant in the evaluated agronomic and fiber quality traits. Cultivar FM 966 is the most suitable parent to compose crossing blocks for the improvement of cotton agronomic and fiber quality traits. The hybrids FM 966 × CNPA 7MH and FM 966 × BRS 286 are the most promising for obtaining segregating populations aiming to select superior genotypes. Inbreeding depression is more pronounced in the agronomic traits than in the fiber quality traits.
DOI: 10.6084/m9.figshare.7244180.v1
title: Procedure for detecting tobamovirus in tomato and pepper seeds decreases the cost analysis

description: ABSTRACT The transmission of tobamovirus by tomato and pepper seeds is an important mean of virus introduction in crops. Therefore, detecting its presence in the seed becomes essential for the preventive control of virus diseases. In this study, a method was proposed for the detection of Tobacco mosaic virus (TMV) and Tomato mosaic virus (ToMV) in tomatoes (Solanum lycopersicum) and Pepper mild mottle virus (PMMoV) in pepper (Capsicum annum) seeds. Seed lots with different levels of incidence were analyzed by biological, serological, and molecular methods. Using DAS-ELISA technique, it was possible to detect TMV up to the limit rate of 1:170 (1 contaminated seed: total seeds) and the ToMV up to 1:200 in tomato seeds; PMMoV in pepper seeds was detected up to 1:140. The IC-RT-PCR detected the TMV and ToMV up to the limit of 1:400 and PMMoV up to the limit of 1:300. The assembled lots containing only 1 contaminated seed in 1000 (1:1000) were combined into 30 sub lots for DAS-ELISA analysis and 10 sub lots for IC-RT-PCR analysis. Both techniques, DAS-ELISA and IC-RT-PCR, were efficient to detect the three viruses in all analyzed samples, but the detection of tobamoviruses with RT-PCR and biological tests was not reliable. Based on the results of this study, in which a combination of seeds in sub lots was made to reduce the number of tests performed, it is possible to make significant savings in the cost of the diagnostic methods routinely conducted in official laboratories, with high efficiency and reliability.