cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.14272/omhgnvwhhanwnn-uhfffaoysa-n/chmo0000630
title: infrared absorption spectroscopy (IR) (2,2,6,6-tetramethyl-1-[1-[4-[tris[4-[1-(2,2,6,6-tetramethylpiperidin-1-yl)oxyethyl]phenyl]methyl]phenyl]ethoxy]piperidine)
title: InChI=1S/C69H104N4O4/c1-49(74-70-61(5,6)41-21-42-62(70,7)8)53-25-33-57(34-26-53)69(58-35-27-54(28-36-58)50(2)75-71-63(9,10)43-22-44-64(71,11)12,59-37-29-55(30-38-59)51(3)76-72-65(13,14)45-23-46-66(72,15)16)60-39-31-56(32-40-60)52(4)77-73-67(17,18)47-24-48-68(73,19)20/h25-40,49-52H,21-24,41-48H2,1-20H3

description: dataset for infrared absorption spectroscopy (IR) IR (ATR, ṽ) = 2996 (w), 2972 (m), 2927 (vs), 2885 (w), 2870 (w), 2846 (w), 1611 (vw), 1503 (w), 1453 (w), 1408 (w), 1374 (m), 1360 (s), 1349 (w), 1299 (w), 1278 (w), 1258 (w), 1242 (w), 1208 (w), 1183 (w), 1132 (s), 1099 (w), 1061 (vs), 1045 (w), 1020 (m), 989 (m), 975 (w), 956 (m), 935 (vs), 881 (w), 826 (vs), 793 (w), 779 (w), 737 (w), 708 (m), 628 (vw), 601 (w), 560 (m), 510 (w), 469 (vw), 419 (w) cm–1.
DOI: 10.6084/m9.figshare.10026260
title: Characterization of Austenite Decomposition in Steels with Different Chemical Concepts and High Potential to Manufacture Seamed Pipes for Oil and Gas Industry

description: This work presents the characterization of austenite decomposition kinetics in two steels during continuous cooling considering non-deformed austenite grains. Two different chemical concepts of steels were evaluated: low carbon - high manganese and a relatively new concept based on low carbon - low manganese - high niobium contents. Dilatometric experiments, microstructural characterization procedures and microhardness tests were carried out. Experimental and calculated CCT diagrams were plotted and the adapted JMAK model was applied aiming to predict the austenite decomposition kinetics. The low carbon - high manganese steel was the most sensitive to the applied cooling rates and, due to that, presented the higher grain refinement and hardness increasing after continuous cooling. These results highlight that the Mn content decreasing may promote a potential loss of grain refinement in procedures of continuous cooling where the structure recrystallization does not occur, as in some welding procedures or conventional heat treatments applied in the seamed pipe manufacturing process.
DOI: 10.6084/m9.figshare.10026266
title: Physiological responses of fava genotypes (Phaseolus lunatus L.) submitted to water stress cultivated in the state of Ceará

description: Abstract Among species of the genus Phaseolus, fava is the most tolerant to drought when compared to common beans. Despite its importance, it has been little studied, requiring applied research to the culture for a better understanding of the mechanisms involved in the response to the water deficit. This study evaluates the tolerance of four fava genotypes grown in Ceará on their resistance to water stress. The experiment was carried out in a completely randomized design, in the 4 x 3 factorial scheme in which the first factor was constituted by the cultivars: ‘Branca’, ‘Mulatinha’, ‘Preta’ and ‘Coquinho Laranja’; the second by three water regimes: irrigated, moderate deficit and severe deficit; with five replicates. (A), stomatal conductance (gs), Ci / Ca ratio, Transpiration (E), water use efficiency, efficiency in the use of intrinsic water (USA int), instantaneous carboxylation efficiency (EiC) and electron transfer rate (ETR). Without compromising its metabolism, the genotype Coquinho Laranja was more tolerant to the water deficit, evidencing higher photosynthetic productivity, associated with the high efficiency in the use of water by the closure of its stomata with reduction of transpiration.
DOI: 10.6084/m9.figshare.10026275.v1
title: Evaluation of the stiffening mechanism based on micro-sized particle inclusions in laminated composites

description: Rigid particles have been incorporated into laminated composites, especially to enhance their bending performance attributed to the stiffening of the matrix phase (i) and the increased interlaminar shear resistance (ii). In order to better evaluate the improvement mechanism provided by the particulate inclusions, this work investigates the incorporation of micro-sized silica on the top, bottom and both surfaces of glass fibre laminates, mitigating the interference of the interlocking effect. Three-point bending, and impact tests are performed to evaluate the hybrid glass fibre composites containing 5, 7.5 and 10 wt% of micro silica. In addition, the effect of the micro silica particles into epoxy polymers is verified under tensile, compressive and abrasion tests. A finite element model is developed to simulate the three-point bending test and to better assess the behaviour of the composite laminate. Although silica particles lead to increased compressive modulus of the epoxy polymers, their positive effect on glass fibre composites under flexural loads is more evident when placed on the bottom side of the laminates subjected to the maximum tensile stress. The incorporation of 7.5 wt% silica microparticles at the bottom surface of the laminates achieves higher flexural strength and lower impact resistance.
DOI: 10.6084/m9.figshare.10026254
title: EVALUATION OF THE IBUPROFEN DELYVERY PROFILE IN SYMMETRIC AND ASYMMETRIC MEMBRANES OF CELLULOSE ACETATE: EFFECT OF MORPHOLOGY

description: Cellulose derivatives still receive special attention in today biomedical applications due to their biocompatibility, ability to form resistant membranes and compatibility with various bioactive agents. In this work, cellulose acetate (CA) was used to prepare membranes with different morphologies aiming to evaluate the release profile of the drug ibuprofen (IBF). The IBF incorporation was performed by the addition of 10% of the drug in an 8% (w/w) CA/acetone solution. The morphology of the membranes was modified by the addition of water, used as porogenic agent. Drug release assays showed the effect of morphology on the cumulative drug release curves. The symmetric membrane exhibited retention of significant amounts of the drug and a slow release process that lasted for more than 50 hours. The asymmetric porous membranes presented different behavior with greater amount of drug released in less time of release. The kinetic parameters calculated from the Higuchi and Korsmeyer/Peppas models indicated release profiles controlled by diffusion/solution process in the polymer matrix. The results revealed that the interactions established between IBF, CA and the matrix morphology are significant factors for the kinetic control of the drug release process and enable to choose different applications of the membranes loaded with IBF.
DOI: 10.6084/m9.figshare.10026260.v1
title: Characterization of Austenite Decomposition in Steels with Different Chemical Concepts and High Potential to Manufacture Seamed Pipes for Oil and Gas Industry

description: This work presents the characterization of austenite decomposition kinetics in two steels during continuous cooling considering non-deformed austenite grains. Two different chemical concepts of steels were evaluated: low carbon - high manganese and a relatively new concept based on low carbon - low manganese - high niobium contents. Dilatometric experiments, microstructural characterization procedures and microhardness tests were carried out. Experimental and calculated CCT diagrams were plotted and the adapted JMAK model was applied aiming to predict the austenite decomposition kinetics. The low carbon - high manganese steel was the most sensitive to the applied cooling rates and, due to that, presented the higher grain refinement and hardness increasing after continuous cooling. These results highlight that the Mn content decreasing may promote a potential loss of grain refinement in procedures of continuous cooling where the structure recrystallization does not occur, as in some welding procedures or conventional heat treatments applied in the seamed pipe manufacturing process.
DOI: 10.6084/m9.figshare.10026266.v1
title: Physiological responses of fava genotypes (Phaseolus lunatus L.) submitted to water stress cultivated in the state of Ceará

description: Abstract Among species of the genus Phaseolus, fava is the most tolerant to drought when compared to common beans. Despite its importance, it has been little studied, requiring applied research to the culture for a better understanding of the mechanisms involved in the response to the water deficit. This study evaluates the tolerance of four fava genotypes grown in Ceará on their resistance to water stress. The experiment was carried out in a completely randomized design, in the 4 x 3 factorial scheme in which the first factor was constituted by the cultivars: ‘Branca’, ‘Mulatinha’, ‘Preta’ and ‘Coquinho Laranja’; the second by three water regimes: irrigated, moderate deficit and severe deficit; with five replicates. (A), stomatal conductance (gs), Ci / Ca ratio, Transpiration (E), water use efficiency, efficiency in the use of intrinsic water (USA int), instantaneous carboxylation efficiency (EiC) and electron transfer rate (ETR). Without compromising its metabolism, the genotype Coquinho Laranja was more tolerant to the water deficit, evidencing higher photosynthetic productivity, associated with the high efficiency in the use of water by the closure of its stomata with reduction of transpiration.
DOI: 10.6084/m9.figshare.10026251
title: Molten Salt Synthesis of Bi2WO6 Powders and its Visible-Light Photocatalytic Activity

description: Bi2WO6 powders were synthesized by the molten salt method at 250-350 ºC using the mixture of Bi(NO3)3·5H2O and Na2WO4·2H2O as a precursor, and the mixture of LiNO3 and NaNO3 with a molar ratio of 27:33 as a molten salt, respectively. The effects of temperature and salt amount on the phase composition, morphology and photocatalytic activity under the visible light irradiation were investigated. The results revealed that pure phase Bi2WO6 powders could be synthesized at 350 ºC as the weight of molten salts were 2‒5 times as many as the precursor. Bi2WO6 powder synthesized with lower salt amount exhibited larger surface area, more abundant pores, narrower bandgap and lower PL intensity, all of which contributed a higher photocatalytic activity. The synthesized Bi2WO6 powder could degrade 0.01 mol/L Rhodamine-B solution by 97% after irradiation under visible light for 60 min. The obtained Bi2WO6 powder had a good photochemical stability and reusability, revealing potential application in environmental treatment.
DOI: 10.6084/m9.figshare.10026257
title: The use of medicinal plants and the interest for community cultivation by residents of the São Francisco neighborhood, Pitangui municipality, MG

description: Abstract: The study has been carried out in the São Francisco neighborhood, urban area of Pitangui, Minas Gerais, with the objective of investigate popular knowledge in the use of medicinal plants. Semi-structured interviews were conducted with 50 families living in the neighborhood during the period between july to september 2017. 53 species belonging to 29 families were cited. The leaves were the most used part and the main form of preparation is the infusion/tea.
DOI: 10.6084/m9.figshare.10026248
title: Effect of oviposition by Bactrocera dorsalis on the antioxidant activity of orange juice

description: Abstract Among fruits and fruit products, oranges and orange juice are the most widely consumed worldwide. However, the effects of pest infestation of oranges on the quality of orange juice are not yet known. To evaluate the effect of the oriental fruit fly Bactrocera dorsalis on the antioxidant activity of orange juice, we measured changes in the vitamin C (Vc) concentration, total phenol content, and antioxidant activity of orange juice after the introduction of fruit fly eggs. Ten days after the eggs were introduced (larvae removed), the concentration of Vc in orange juice was 18.65 µg/mL, which was 9.16 µg/mL lower than that measured in healthy orange juice. In addition, the total phenol content decreased by 46.519 mg Gallic Acid Equivalents (GAE)/g to 9.748 mg GAE/g. Furthermore, the free-radical scavenging activity decreased from 22.297% to 5.393%. Correlation analysis indicated significant correlations between Vc concentration, total phenol content, and antioxidant activity of orange juice after B. dorsalis infestation. The decrease in Vc concentration, total phenol content and free-radical scavenging activity indicated that B. dorsalis changed the quality of orange juice by affecting the antioxidant activity of the juice after the oranges were infested.
DOI: 10.6084/m9.figshare.10026251.v1
title: Molten Salt Synthesis of Bi2WO6 Powders and its Visible-Light Photocatalytic Activity

description: Bi2WO6 powders were synthesized by the molten salt method at 250-350 ºC using the mixture of Bi(NO3)3·5H2O and Na2WO4·2H2O as a precursor, and the mixture of LiNO3 and NaNO3 with a molar ratio of 27:33 as a molten salt, respectively. The effects of temperature and salt amount on the phase composition, morphology and photocatalytic activity under the visible light irradiation were investigated. The results revealed that pure phase Bi2WO6 powders could be synthesized at 350 ºC as the weight of molten salts were 2‒5 times as many as the precursor. Bi2WO6 powder synthesized with lower salt amount exhibited larger surface area, more abundant pores, narrower bandgap and lower PL intensity, all of which contributed a higher photocatalytic activity. The synthesized Bi2WO6 powder could degrade 0.01 mol/L Rhodamine-B solution by 97% after irradiation under visible light for 60 min. The obtained Bi2WO6 powder had a good photochemical stability and reusability, revealing potential application in environmental treatment.
DOI: 10.6084/m9.figshare.10026254.v1
title: EVALUATION OF THE IBUPROFEN DELYVERY PROFILE IN SYMMETRIC AND ASYMMETRIC MEMBRANES OF CELLULOSE ACETATE: EFFECT OF MORPHOLOGY

description: Cellulose derivatives still receive special attention in today biomedical applications due to their biocompatibility, ability to form resistant membranes and compatibility with various bioactive agents. In this work, cellulose acetate (CA) was used to prepare membranes with different morphologies aiming to evaluate the release profile of the drug ibuprofen (IBF). The IBF incorporation was performed by the addition of 10% of the drug in an 8% (w/w) CA/acetone solution. The morphology of the membranes was modified by the addition of water, used as porogenic agent. Drug release assays showed the effect of morphology on the cumulative drug release curves. The symmetric membrane exhibited retention of significant amounts of the drug and a slow release process that lasted for more than 50 hours. The asymmetric porous membranes presented different behavior with greater amount of drug released in less time of release. The kinetic parameters calculated from the Higuchi and Korsmeyer/Peppas models indicated release profiles controlled by diffusion/solution process in the polymer matrix. The results revealed that the interactions established between IBF, CA and the matrix morphology are significant factors for the kinetic control of the drug release process and enable to choose different applications of the membranes loaded with IBF.
DOI: 10.6084/m9.figshare.10026242
title: Physicochemical Study of the Interaction between Gold Nanoparticles and Lipase from Candida sp. (CALB): Insights into the Nano-Bio Interface

description: The surface interactions between gold nanoparticles (AuNPs) and lipase from Candida antarctica fraction B (CALB) were investigated at macromolecular and colloidal length-scales. In order to elucidate the reciprocal effect of the interactions on the individual component’s properties, CALB was either added during the synthesis of AuNPs or added to pre-synthesized AuNPs. In both cases, it was observed that the AuNPs are spherical and stable and, by fluorescence and circular dichroism spectroscopies, changes were observed in the secondary and tertiary structure of CALB, that were dependent on the AuNPs concentration. Nevertheless, the catalytic activity of CALB was maintained, although at a lower percentage (≥ 80%), thus new bio-functionalities were inserted into AuNPs upon interaction with CALB. Using simple and straightforward approaches and state-of-the-art techniques important knowledge about CALB/AuNPs bioconjugates was gained, thus contributing to the development of new nano-biomaterials and for the safe use of AuNPs in biomedical applications.
DOI: 10.6084/m9.figshare.10026257.v1
title: The use of medicinal plants and the interest for community cultivation by residents of the São Francisco neighborhood, Pitangui municipality, MG

description: Abstract: The study has been carried out in the São Francisco neighborhood, urban area of Pitangui, Minas Gerais, with the objective of investigate popular knowledge in the use of medicinal plants. Semi-structured interviews were conducted with 50 families living in the neighborhood during the period between july to september 2017. 53 species belonging to 29 families were cited. The leaves were the most used part and the main form of preparation is the infusion/tea.
DOI: 10.6084/m9.figshare.10026239
title: Physicochemical quality of and Escherichia coli resistance profiles in urban surface waters

description: Abstract Aquatic ecosystems of urban rivers are contaminated through waste disposal, which poses a public health problem. The objective of this research was to evaluate the quality of water used for recreation and public supply of six rivers in the city of Cascavel - Paraná, including Cascavel, Quati, Bezerra, Antas, Clarito and Amambay. Samples were collected every 4 months in 2017, and their physicochemical and microbiological parameters, as well as resistance profiles of strains of Escherichia coli to antimicrobials distributed by pharmacies of the primary healthcare network, were evaluated. Parameters such as water temperature, turbidity, total nitrogen, total phosphorus, total coliforms and thermotolerant coliforms showed significant differences. The allowed limit for thermotolerant coliforms, which was set by National Environment Council, Resolution 357/2005, was exceeded in all of the six analyzed rivers. It was determined that 48.1% of E. coli strains showed resistance to nine antimicrobial tested. The highest levels of resistance were found for ampicillin (27.7%), tetracycline (27.7%) and amoxicillin (24.0%). The results of this study contribute to the understanding of the hazards associated with the contamination of springs in urban centers with wastewater containing resistant bacteria. Therefore, recovery work is necessary in these areas because of the importance of these water sources for the entire western region of Paraná state.
DOI: 10.6084/m9.figshare.10026236
title: A green approach for the treatment of dye and surfactant contaminated industrial wastewater

description: Abstract Synthetic dyes, particularly reactive and acid dyes, are commonly used in the textile industry because of their advantages as excellent color fastness and brightness. Also, surfactants are used for an increment of coloring success in the textile industry. One of the major problems concerning textile wastewater is the treatment of the effluents containing both dyes and surfactants. Biological treatment systems are recommended as useful, economic and eco-friendly methods for treatment of industrial wastewater. The purpose of this study was to investigate the binary removal of a textile dye and a surfactant by growing Aspergillus versicolor culture in molasses medium. The effect of dye and surfactant concentration on the removal of dye and surfactant was determined. This study resulted that 100% of the surfactant and dye molecules removed together with the formation of a dye-surfactant complex by fungus. It is concluded that binary removal systems are very efficient for industrial wastewater treatment.
DOI: 10.6084/m9.figshare.10026248.v1
title: Effect of oviposition by Bactrocera dorsalis on the antioxidant activity of orange juice

description: Abstract Among fruits and fruit products, oranges and orange juice are the most widely consumed worldwide. However, the effects of pest infestation of oranges on the quality of orange juice are not yet known. To evaluate the effect of the oriental fruit fly Bactrocera dorsalis on the antioxidant activity of orange juice, we measured changes in the vitamin C (Vc) concentration, total phenol content, and antioxidant activity of orange juice after the introduction of fruit fly eggs. Ten days after the eggs were introduced (larvae removed), the concentration of Vc in orange juice was 18.65 µg/mL, which was 9.16 µg/mL lower than that measured in healthy orange juice. In addition, the total phenol content decreased by 46.519 mg Gallic Acid Equivalents (GAE)/g to 9.748 mg GAE/g. Furthermore, the free-radical scavenging activity decreased from 22.297% to 5.393%. Correlation analysis indicated significant correlations between Vc concentration, total phenol content, and antioxidant activity of orange juice after B. dorsalis infestation. The decrease in Vc concentration, total phenol content and free-radical scavenging activity indicated that B. dorsalis changed the quality of orange juice by affecting the antioxidant activity of the juice after the oranges were infested.
DOI: 10.6084/m9.figshare.10026233
title: Verification of atmospheric plasma irradiation as an alternative control method for Tribolium castaneum (Herbst)

description: Abstract Radio frequency plasma, RF plasma, has been applied to a number of industrial applications. Laboratory experiments were conducted to determine the RF plasma potential in Tribolium castaneum (Herbst) control. Three treatment variables: (1) helium or argon plasmas; (2) two power levels (50 and 100 watt); and (3) different RF plasma exposure times (0, 20, 40, 60 and 90 seconds) were examined in this study. The susceptibility of T. castaneum to treatment varies as gas, power level, and the exposure time varies. A positive correlation was found between insect mortality percent in treating larvae as well as treated pupae and exposure time to RF plasma and also the power level of irradiation. The results revealed that no live insects were found after a 90 second, 100 watt helium RF plasma treatment. The survival percents of the adults were developed from treated larvae and treated pupae were significantly reduced by increasing of the exposure time or power level. Obtained data indicated that the treatment with RF plasma might be considered as an environmentally compatible or alternative supplement to the other control methods for stored product-pests management.
DOI: 10.6084/m9.figshare.10026242.v1
title: Physicochemical Study of the Interaction between Gold Nanoparticles and Lipase from Candida sp. (CALB): Insights into the Nano-Bio Interface

description: The surface interactions between gold nanoparticles (AuNPs) and lipase from Candida antarctica fraction B (CALB) were investigated at macromolecular and colloidal length-scales. In order to elucidate the reciprocal effect of the interactions on the individual component’s properties, CALB was either added during the synthesis of AuNPs or added to pre-synthesized AuNPs. In both cases, it was observed that the AuNPs are spherical and stable and, by fluorescence and circular dichroism spectroscopies, changes were observed in the secondary and tertiary structure of CALB, that were dependent on the AuNPs concentration. Nevertheless, the catalytic activity of CALB was maintained, although at a lower percentage (≥ 80%), thus new bio-functionalities were inserted into AuNPs upon interaction with CALB. Using simple and straightforward approaches and state-of-the-art techniques important knowledge about CALB/AuNPs bioconjugates was gained, thus contributing to the development of new nano-biomaterials and for the safe use of AuNPs in biomedical applications.