cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7244432
title: Self-compacting concrete with low cement consumption: impact of the reduction of cement consumption on the compressive strength

description: ABSTRACT The consolidation of concrete as the second most consumed material in the world has instigated the search for solutions to reduce clinker consumption and CO2 emissions. Aiming to provide a contribution to environmental sustainability and the cement industry, this research seeks to analyze the economic viability of self-compacting concrete (SCC) with low cement consumption. A study of the optimization of the granular skeleton and the composition of the paste was carried out using the Gomes (2002) dosing method for the SCC. Reductions of up to 25% of the cement consumption were measured in relation to the reference SCC. Regarding the relative cement consumption and unit cost indexes per MPa developed in 1 m3 of concrete, it was verified that the SCC’s with low cement consumption showed reductions of up to 34.75% and 16.83%, respectively, while being compared to the reference SCC. The greater effectiveness in the reduction of the consumption relative to the mechanical resistance to compression than in the consumption of cement per cubic meter of concrete observed, is due to the observation of higher levels of mechanical resistance to compression for the composition with lower paste volume and higher proximity to the optimal void index found in the aggregate packaging stage. This result shows that even in the lower dosage circumstances, the mechanical compressive strength can be increased, thus demonstrating the technical and financial superiority of the SCC with low cement consumption compared to conventional SCC dosages, in addition to the sustainability gains obtained by the reduction of the clinker consumption and the CO2 emissions inherent to the lower amount of cement mass per cubic meter of concrete.
DOI: 10.6084/m9.figshare.7244435.v1
title: Physico-chemical characterization of centrifuged sludge from the Tamanduá water treatment plant (Foz do Iguaçu, PR)

description: ABSTRACT The water treatment process generates a residue called water treatment plant (WTP) sludge, which needs to be correctly characterized to ensure appropriate disposal or reuse. This study aimed to characterize the centrifuged sludge produced at the Tamanduá WTP, Iguaçu Falls City, Brazil, and considered opportunities for its reuse in the production of concrete for the civil construction industry. Wet sludge (sludge in its natural form) analysis included the determination of total solids, moisture content, density, pH, and inorganic parameters (As, Al, Ba, Cd, Pb, Cr, F, Hg, Ag, and Se) through thermogravimetric analysis, X-ray diffraction, and chemical analysis by X-ray fluorescence and loss ignition. For calcined WTP sludge, chemical and mineralogical composition and laser granulometry were evaluated. The results indicated that calcined sludge had the potential to be used in the production of cement materials; conversely wet sludge did not reach the appropriate safety standards due to the high quantity of organic matter.
DOI: 10.6084/m9.figshare.7244438.v1
title: Analysis of influence of concrete element format and properties steel fibers on flexural toughness

description: ABSTRACT Concrete characterizing studies with steel fibers starting from the assay of the traction on flexural of prisms to obtain the toughness flexural have being done to the parameterization of the mechanic behavior of concrete pipes with steel fibers. The study aim is to adjust curves modeling the toughness estimates to the flex on concrete pipes in function to the toughness flexural on prims, both with steel fibers randomly oriented and moreover verify if there is or there is not significant statistic difference among toughness average to flexural when compared to the concrete element form (pipe or prism), and the priorities of steel fibers: Form Factor (65 or 80), State (free or joined to the basis comb) and theoretical fiber consumptions (0,25% or 0,38% or 0,50%). Curves were adjusted modeling the concrete pipe toughness with steel fibers in function of prism flexural toughness, being possible to observe that larger is the prism flexural toughness the larger will be the pipe flexural toughness. The analysis of variance was used to evaluate the existence or not of significant statistic difference among double or triple or quadruples associations. It was individually found that there is not significant statistic difference among the average values of toughness flexural, when compared concrete elements forms, however, there is significant statistic average values of toughness flexural when compared: (i) Form Factor; (ii) State and (iii) Theoretical Fiber Consumption. There was influence on the average values of flexural toughness when we make associations among the different levels of form factors, state and theoretical consumptions on fibers.
DOI: 10.7284/135059
title: Flowmeter data collected during research cruise SKQ201911T using a Krohne Optiflux 5000 instrument system onboard the platform RV Sikuliaq

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7244429
title: Trends in Temperature and Rainfall Extremes near the Artificial Sobradinho Lake, Brazil

description: Abstract The formation of artificial lake due construction of a hydroelectric plant causes irreversible environmental impacts. Studies associated with these artificial lakes for the Brazilian semiarid region are still insufficient. Thus, the objective of this study is to provide new information on the trends of climatic extremes, dependent on rainfall and air temperature, for the Sobradinho Hydroelectric Power Plant (SHPP) lake region, through the analysis of climate change indices. This study is particularly important for the SHPP region because microclimate changes have significant impacts on the natural, social and economic sectors. For the two analyzed stations (Bebedouro-PE and Mandacaru-BA), it is not possible to affirm that the construction of the SHPP artificial lake altered the local microclimate. Trends of increase in maximum temperature, the number of hot days and diurnal temperature range were noticed. However, the rise of these indices cannot be attributed to the formation of the SHPP lake. The influence of the SST of Tropical Oceans on the temporal behavior of some of the indices used in this study may have contributed to increases in hot days and nights, maximum temperature, diurnal temperature range and consecutive dry days over the region.
DOI: 10.6084/m9.figshare.7244432.v1
title: Self-compacting concrete with low cement consumption: impact of the reduction of cement consumption on the compressive strength

description: ABSTRACT The consolidation of concrete as the second most consumed material in the world has instigated the search for solutions to reduce clinker consumption and CO2 emissions. Aiming to provide a contribution to environmental sustainability and the cement industry, this research seeks to analyze the economic viability of self-compacting concrete (SCC) with low cement consumption. A study of the optimization of the granular skeleton and the composition of the paste was carried out using the Gomes (2002) dosing method for the SCC. Reductions of up to 25% of the cement consumption were measured in relation to the reference SCC. Regarding the relative cement consumption and unit cost indexes per MPa developed in 1 m3 of concrete, it was verified that the SCC’s with low cement consumption showed reductions of up to 34.75% and 16.83%, respectively, while being compared to the reference SCC. The greater effectiveness in the reduction of the consumption relative to the mechanical resistance to compression than in the consumption of cement per cubic meter of concrete observed, is due to the observation of higher levels of mechanical resistance to compression for the composition with lower paste volume and higher proximity to the optimal void index found in the aggregate packaging stage. This result shows that even in the lower dosage circumstances, the mechanical compressive strength can be increased, thus demonstrating the technical and financial superiority of the SCC with low cement consumption compared to conventional SCC dosages, in addition to the sustainability gains obtained by the reduction of the clinker consumption and the CO2 emissions inherent to the lower amount of cement mass per cubic meter of concrete.
DOI: 10.6084/m9.figshare.7244426
title: Rooting and survival processes of Chaqueña family cotton agriculture in the Argentine North. Contributions for the design of public policies with social equity and environmental sustainability

description: Abstract: This research focuses on the process of construction of a productive territoriality - family cotton agriculture - with the support and support of public policy and its experiences of survival in contexts of strong restructuring, postulating that the evaluation of these processes constitutes an essential input for the design of rural development strategies.
DOI: 10.6084/m9.figshare.7244429.v1
title: Trends in Temperature and Rainfall Extremes near the Artificial Sobradinho Lake, Brazil

description: Abstract The formation of artificial lake due construction of a hydroelectric plant causes irreversible environmental impacts. Studies associated with these artificial lakes for the Brazilian semiarid region are still insufficient. Thus, the objective of this study is to provide new information on the trends of climatic extremes, dependent on rainfall and air temperature, for the Sobradinho Hydroelectric Power Plant (SHPP) lake region, through the analysis of climate change indices. This study is particularly important for the SHPP region because microclimate changes have significant impacts on the natural, social and economic sectors. For the two analyzed stations (Bebedouro-PE and Mandacaru-BA), it is not possible to affirm that the construction of the SHPP artificial lake altered the local microclimate. Trends of increase in maximum temperature, the number of hot days and diurnal temperature range were noticed. However, the rise of these indices cannot be attributed to the formation of the SHPP lake. The influence of the SST of Tropical Oceans on the temporal behavior of some of the indices used in this study may have contributed to increases in hot days and nights, maximum temperature, diurnal temperature range and consecutive dry days over the region.
DOI: 10.7284/135060
title: Fluorometer data collected during research cruise SKQ201911T using a Turner Cyclops-7 instrument system onboard the platform RV Sikuliaq

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7244423
title: Bovine sperm cell motility after incubation in follicular fluid

description: Abstract: The objective of this work was to evaluate sperm cell motility after intrafollicular artificial insemination (IFAI) in vivo or after incubation in follicular fluid in vitro. In the in vivo experiment, IFAI was performed, followed by the recovery of follicular content 1 to 4 hours later, in order to assess sperm motility. In the in vitro experiment, spermatozoa from a pool of commercial frozen-thawed semen were evaluated for their kinetics after incubation for 1 or 3 hours, either pure (pool, control group) or in follicular fluid (FF). A low motility of sperm cells was observed in the FF samples, both in vitro and in vivo. In vitro, the main parameters negatively affected in the sperm cells incubated in FF, compared with the control, were: total motility (TM), progressive motility (PM), curvilinear distance, and straightness, after 1 hour of incubation; and TM, PM, average path velocity, and curvilinear velocity after 3 hours of incubation. The ovarian follicle and follicular fluid do not provide a suitable environment to maintain bovine sperm cell motility.
DOI: 10.6084/m9.figshare.7244423.v1
title: Bovine sperm cell motility after incubation in follicular fluid

description: Abstract: The objective of this work was to evaluate sperm cell motility after intrafollicular artificial insemination (IFAI) in vivo or after incubation in follicular fluid in vitro. In the in vivo experiment, IFAI was performed, followed by the recovery of follicular content 1 to 4 hours later, in order to assess sperm motility. In the in vitro experiment, spermatozoa from a pool of commercial frozen-thawed semen were evaluated for their kinetics after incubation for 1 or 3 hours, either pure (pool, control group) or in follicular fluid (FF). A low motility of sperm cells was observed in the FF samples, both in vitro and in vivo. In vitro, the main parameters negatively affected in the sperm cells incubated in FF, compared with the control, were: total motility (TM), progressive motility (PM), curvilinear distance, and straightness, after 1 hour of incubation; and TM, PM, average path velocity, and curvilinear velocity after 3 hours of incubation. The ovarian follicle and follicular fluid do not provide a suitable environment to maintain bovine sperm cell motility.
DOI: 10.6084/m9.figshare.7244420
title: Quality of soybean seeds in response to nitrogen fertilization and inoculation with Bradyrhizobium japonicum 1

description: ABSTRACT Nitrogen fertilization may interfere in the quality of soybean seeds. This study aimed to determine the physiological and sanitary quality of soybean seeds, in response to levels and times of nitrogen (N) application associated with Bradyrhizobium japonicum inoculation. Treatments were arranged in a randomized block design, in a 2 × 3 × 4 factorial arrangement [two soybean cultivars (BRS 1074 IPRO and ST 797 IPRO), three application times (sowing, 30 and 50 days after emergence) and four N levels (0 kg ha-1, 20 kg ha-1, 40 kg ha-1 and 60 kg ha-1), with four replicates. The 1,000-seed mass, moisture content, germination rate, seedling height, shoot length, primary root length, total seedling dry matter, electrical conductivity, mechanical damage, vigor and viability (tetrazolium test) and sanitary quality of the seeds were measured. The use of mineral N, associated with the inoculation of B. japonicum bacteria, does not prove to be consistent, in terms of its effects on the physiological quality of soybean seeds, although the incidence of pathogens may be reduced.
DOI: 10.6084/m9.figshare.7244426.v1
title: Rooting and survival processes of Chaqueña family cotton agriculture in the Argentine North. Contributions for the design of public policies with social equity and environmental sustainability

description: Abstract: This research focuses on the process of construction of a productive territoriality - family cotton agriculture - with the support and support of public policy and its experiences of survival in contexts of strong restructuring, postulating that the evaluation of these processes constitutes an essential input for the design of rural development strategies.
DOI: 10.6084/m9.figshare.7244420.v1
title: Quality of soybean seeds in response to nitrogen fertilization and inoculation with Bradyrhizobium japonicum 1

description: ABSTRACT Nitrogen fertilization may interfere in the quality of soybean seeds. This study aimed to determine the physiological and sanitary quality of soybean seeds, in response to levels and times of nitrogen (N) application associated with Bradyrhizobium japonicum inoculation. Treatments were arranged in a randomized block design, in a 2 × 3 × 4 factorial arrangement [two soybean cultivars (BRS 1074 IPRO and ST 797 IPRO), three application times (sowing, 30 and 50 days after emergence) and four N levels (0 kg ha-1, 20 kg ha-1, 40 kg ha-1 and 60 kg ha-1), with four replicates. The 1,000-seed mass, moisture content, germination rate, seedling height, shoot length, primary root length, total seedling dry matter, electrical conductivity, mechanical damage, vigor and viability (tetrazolium test) and sanitary quality of the seeds were measured. The use of mineral N, associated with the inoculation of B. japonicum bacteria, does not prove to be consistent, in terms of its effects on the physiological quality of soybean seeds, although the incidence of pathogens may be reduced.
DOI: 10.7284/135061
title: GNSS (Global Navigation Satellite System) data collected during research cruise SKQ201911T using a C&C C-Nav 3050 instrument system onboard the platform RV Sikuliaq

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7244411
title: Occurrence of Pesticides in Pericarpium Citri Reticulatae and Related Products Using Syringe Filter-Based Cleanup

description: The study established a method of rapid cleanup using an easy to operate syringe filter and gas chromatography coupled to an electron capture detector (GC-ECD) to detect 37 pesticides in Pericarpium Citri Reticulatae and related products. The critical parameters related to clean-up efficiency were optimized. The adsorbents, which included PestiCarb (0.5 g), primary secondary amine (PSA, 0.25 g) and Florisil (1.0 g), were loaded in turn and push-pull was performed 4 times within a 1 min operating time. Under optimized conditions, the recovery of pesticides ranged from 61.6 to 128.6% at three spiked levels (25, 50, 500 µg kg-1). After analysis by GC-ECD and confirmation by gas chromatography coupled to tandem mass spectrometry (GC-MS/MS), 8 out of 57 batches of peels were found to be contaminated with hexachlorobenzene, dicofol, procymidone and p,p’-DDE (dichlorodiphenyldichloroethylene). The most frequently (10.5%) occurring pollutants were hexachlorobenzene and dicofol. In addition, 5 batches contained prohibited or restricted persistent organochlorines at levels above regulations, and 5 of these peels contained more than two pesticides.
DOI: 10.6084/m9.figshare.7244414
title: Get With The Guidelines®–Stroke performance indicators in patients with transient ischemic attack

description: ABSTRACT Get With The Guidelines®–Stroke is an in-hospital program for improving stroke care by promoting adherence to scientific guidelines. Of the patients with transient ischemic attack (TIA), 10-15% have a stroke within three months, and many patients do not receive the recommended interventions to prevent this outcome. Objective: The goal of this study was to assess the adherence to stroke quality indicators in patients with TIA. Methods: This retrospective observational study evaluated consecutive patients admitted to a primary stroke center with TIA or acute ischemic stroke (AIS) from August 2008 to December 2013. Six quality indicators applicable to both TIA and AIS were analyzed and compared between groups. Results: A total of 357 patients with TIA and 787 patients with AIS were evaluated. Antithrombotic medication use within 48 hours of admission, discharge use of anticoagulation for atrial fibrillation and counseling for smoking cessation were similar between groups. In the TIA group, discharge use of antithrombotic medication (95% versus 98%; p = 0.01), lipid-lowering treatment (57.7% versus 64.1%; p &lt; 0.01) and stroke education (56.5% versus 74.5%; p &lt; 0.01) were all less frequently observed compared with patients with AIS. Conclusions: The adherence to some of the Get With The Guidelines®–Stroke quality indicators was lower in patients with TIA than in patients with AIS. Measures should be undertaken to reinforce the importance of such clinical interventions in patients with TIA.
DOI: 10.6084/m9.figshare.7244411.v1
title: Occurrence of Pesticides in Pericarpium Citri Reticulatae and Related Products Using Syringe Filter-Based Cleanup

description: The study established a method of rapid cleanup using an easy to operate syringe filter and gas chromatography coupled to an electron capture detector (GC-ECD) to detect 37 pesticides in Pericarpium Citri Reticulatae and related products. The critical parameters related to clean-up efficiency were optimized. The adsorbents, which included PestiCarb (0.5 g), primary secondary amine (PSA, 0.25 g) and Florisil (1.0 g), were loaded in turn and push-pull was performed 4 times within a 1 min operating time. Under optimized conditions, the recovery of pesticides ranged from 61.6 to 128.6% at three spiked levels (25, 50, 500 µg kg-1). After analysis by GC-ECD and confirmation by gas chromatography coupled to tandem mass spectrometry (GC-MS/MS), 8 out of 57 batches of peels were found to be contaminated with hexachlorobenzene, dicofol, procymidone and p,p’-DDE (dichlorodiphenyldichloroethylene). The most frequently (10.5%) occurring pollutants were hexachlorobenzene and dicofol. In addition, 5 batches contained prohibited or restricted persistent organochlorines at levels above regulations, and 5 of these peels contained more than two pesticides.
DOI: 10.6084/m9.figshare.7244414.v1
title: Get With The Guidelines®–Stroke performance indicators in patients with transient ischemic attack

description: ABSTRACT Get With The Guidelines®–Stroke is an in-hospital program for improving stroke care by promoting adherence to scientific guidelines. Of the patients with transient ischemic attack (TIA), 10-15% have a stroke within three months, and many patients do not receive the recommended interventions to prevent this outcome. Objective: The goal of this study was to assess the adherence to stroke quality indicators in patients with TIA. Methods: This retrospective observational study evaluated consecutive patients admitted to a primary stroke center with TIA or acute ischemic stroke (AIS) from August 2008 to December 2013. Six quality indicators applicable to both TIA and AIS were analyzed and compared between groups. Results: A total of 357 patients with TIA and 787 patients with AIS were evaluated. Antithrombotic medication use within 48 hours of admission, discharge use of anticoagulation for atrial fibrillation and counseling for smoking cessation were similar between groups. In the TIA group, discharge use of antithrombotic medication (95% versus 98%; p = 0.01), lipid-lowering treatment (57.7% versus 64.1%; p &lt; 0.01) and stroke education (56.5% versus 74.5%; p &lt; 0.01) were all less frequently observed compared with patients with AIS. Conclusions: The adherence to some of the Get With The Guidelines®–Stroke quality indicators was lower in patients with TIA than in patients with AIS. Measures should be undertaken to reinforce the importance of such clinical interventions in patients with TIA.