cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.10074080
title: Influence of difficulty of insemination, temperament and plasma cortisol on conception rate of Nelore cows and heifers in timed AI

description: ABSTRACT The objective was to evaluate the influence of stress and difficulty of insemination (DifIA) on conception rate (CR) of Nellore cows (n= 93) and heifers (n= 72) in Timed-AI. On D9, temperament (NTe) and time for chute exit (TSB) were recorded for all animals, and blood samples were colected from heifers. On the day of Timed-AI (D11), NTe, TSB, DifIA and time for AI were recorded. For cows, CR was 36% and for heifers 46% (P&gt; 0.05). No effect (P&gt; 0.05) of NTe was observed on CR. However, a tendency (P&lt; 0,10) for higher CR was observed in animals with no difficulty for insemination (DifIA1; CR=42%) compared to animals that presented moderate or high difficulty (DifIA2+DifIA3, CR=27%). Time required for AI was lower (P&lt; 0.05) in animals DifIA1 (17:31±06:02sec) than in animals DifIA2-3 (30:10±15:45sec). Heifers with greater (P&lt; 0.05) cortisol levels presented higher Nte (P&lt; 0.05). However, CR (59%) of less reactive heifers (cortisol=4,12±1,12ng/mL; NTe=3,2±0,6) did not differ from CR (41%; P&gt; 0.05) of stressed animals (cortisol=7,76±1,33ng/mL; NTe=3,82±0,79). It was concluded that assessments of temperament were related to stress level, although these parameters did not affect the CR of this study. However, the higher difficulty and/or time to complete AI showed to be a potential factor for reducing fertility after timed-AI.
DOI: 10.6084/m9.figshare.10074092.v1
title: Nanostructured Systems Obtention Using LbL Self-Assembly or the Cysteine-Assisted Adsorption Method and Their Application as a Water Splitting Single Catalyst

description: The present work evaluated the effect on charge transfer in functionalized TiO2 nanostructured systems using different binders. We highlight the conditions required to form self-assembled systems by varying the number of layers, as well as by substituting them for an organic binder, cysteine. Additionally, we study the pH effect of the precursor solution (HAuCl4) on gold nanoparticles (AuNPs) formation. The morphological characterization allowed us to determine the percentage of Au atoms on the surface of the synthesized nanoparticles. Inductively coupled plasma mass spectrometry (ICP-MS) analysis determined the amount of gold deposited on the TiO2 surface, which ranged from 4.56 to 253.00 ng mm-2 depending on the system used. Based on Fourier-transform infrared spectroscopy (FTIR) and Raman analysis, it was possible to propose a photolysis mechanism for AuNP formation in accordance with the change in the binders. The different systems were subjected to hydrogen photogeneration by a water splitting process, resulting in 2.02 µmol cm-2 of hydrogen production for cysteine binder [Cys+HAuCl4-2.7]. There proved to be an excellent synergy between the morphological aspects, crystallinity, and stability of this arrangement.
DOI: 10.6084/m9.figshare.10074080.v1
title: Influence of difficulty of insemination, temperament and plasma cortisol on conception rate of Nelore cows and heifers in timed AI

description: ABSTRACT The objective was to evaluate the influence of stress and difficulty of insemination (DifIA) on conception rate (CR) of Nellore cows (n= 93) and heifers (n= 72) in Timed-AI. On D9, temperament (NTe) and time for chute exit (TSB) were recorded for all animals, and blood samples were colected from heifers. On the day of Timed-AI (D11), NTe, TSB, DifIA and time for AI were recorded. For cows, CR was 36% and for heifers 46% (P&gt; 0.05). No effect (P&gt; 0.05) of NTe was observed on CR. However, a tendency (P&lt; 0,10) for higher CR was observed in animals with no difficulty for insemination (DifIA1; CR=42%) compared to animals that presented moderate or high difficulty (DifIA2+DifIA3, CR=27%). Time required for AI was lower (P&lt; 0.05) in animals DifIA1 (17:31±06:02sec) than in animals DifIA2-3 (30:10±15:45sec). Heifers with greater (P&lt; 0.05) cortisol levels presented higher Nte (P&lt; 0.05). However, CR (59%) of less reactive heifers (cortisol=4,12±1,12ng/mL; NTe=3,2±0,6) did not differ from CR (41%; P&gt; 0.05) of stressed animals (cortisol=7,76±1,33ng/mL; NTe=3,82±0,79). It was concluded that assessments of temperament were related to stress level, although these parameters did not affect the CR of this study. However, the higher difficulty and/or time to complete AI showed to be a potential factor for reducing fertility after timed-AI.
DOI: 10.6084/m9.figshare.10074083.v1
title: An outbreak of compressive myelopathy due to pyogranulomatous reaction to the oily adjuvant of the foot-and-mouth disease vaccine - case report

description: ABSTRACT Cases of compressive myelopathy syndrome associated with post vaccinal pyogranulomas were diagnosed post mortem in three cows from a farm in Minas Gerais state, Brazil. These cows presented ataxia and bilateral paresis of the pelvic limbs, which evolved to paralysis, and sternal recumbence. On necropsy, locally extensive areas of the longissimus dorsi muscle were replaced by pyogranulomas supported by moderate amounts of fibrous connective tissue. On the cut surface, some nodules contained yellowish and viscous fluid (purulent exudate) or whitish fluid (interpreted as the oily adjuvant of a vaccine). In the spinal canal of the subjacent vertebrae, compressing the spinal cord, were pyogranulomas identical to those described in the skeletal muscle. Histologically, the pyogranulomas were composed of a central clear vacuole (consistent with the space left by the oil adjuvant droplets), surrounded by neutrophils and, more externally, by large numbers of epithelioid macrophages and fewer multinucleated giant cells. In the white matter of the spinal cord were numerous well-defined, clear vacuoles (Wallerian degeneration). The association of the clinical history and pathological findings allowed the diagnosis of compressive myelopathy associated with pyogranulomatous reaction to the oily adjuvant of the foot-and-mouth disease vaccine, in this case, due to its inadequate application.
DOI: 10.6084/m9.figshare.10074068
title: Bioaccessibility of Zinc from Yogurt and Determination of Total Concentration Using Slurry Sampling and Flame Atomic Absorption Spectrometry

description: The bioaccessibility of Zn during in vitro gastrointestinal digestion from yogurt was investigated. In addition, the methodologies of sample preparation (dry and wet digestion, and slurry sampling) for the determination of total concentration of Zn in yogurt by flame atomic absorption spectrometry were also compared in this work. In comparison with digestion procedures, the proposed slurry sampling is simple and less time-consuming procedure. The limit of quantification determined was 1.3 µg g-1. The concentrations of Zn in the Brazilian yogurt ranged from 3.40 to 5.62 µg g-1. The percentage of the bioaccessible fraction of Zn from the samples ranged from 10 to 26%. This corresponds to an average daily intake of less than 2% of the metal for adults and children, suggesting that the Brazilian yogurt contributes with a low amount of Zn for the human diet.
DOI: 10.6084/m9.figshare.10074071
title: Neurological signs described at the Federal University of Rio de Janeiro: connecting the past to the future

description: ABSTRACT The Federal University of Rio de Janeiro (UFRJ) is one of the pillars of Brazilian Medicine and, in Neurology, has always shown prominence, with notable professors such as Antônio Austregésilo and Deolindo Couto. Historically, practitioners of the UFRJ Medical School have discovered neurological signs that, although used in medical and academic practice, have never been published. Objective Our aim was to bring these signs to the forefront so that they become properly recognized and studied. Methods We conducted our search by questioning 49 professors and physicians by e-mail about neurological signs that they remembered having had contact with at UFRJ. Results We report on the unpublished pillow sign in progressive supranuclear palsy; the Brazilian sandal sign in functional or malingering patients; the dermographism sign in acute meningitis; the reverse forearm rolling sign in functional palsies; the cycling maneuver in parkinsonian syndromes and the Sá Cavalcanti sign, a Babinski equivalent. We have also recollected the following published signs for their historical relevance: the Austregésilo sign (Antônio Austregésilo), another Babinski equivalent; the digiti quinti rolling sign in subtle palsies (Péricles Maranhão) and the digiti quinti sign in hemiplegic migraine (Maurice Vincent). These signs are easily reproduced and have potential clinical applicability, deserving to be more thoroughly studied. Conclusions Through a qualitative methodology, we have identified six original unpublished neurological signs known by the academic community, establishing the contribution of these individuals to the expansion of neurological semiology.
DOI: 10.6084/m9.figshare.10074074
title: Feeding strategies on larval rearing of severum (Heros severus) (Heckel, 1840), Amazonian ornamental fish

description: ABSTRACT The aim of this study was to evaluate the supply time of artemia and the period of food transition to post-larvae of severum (Heros severus). A total of 450 post-larvae of severum were distributed in 45 aquaria, in a completely randomized design, in a 3x5 factorial scheme, with three replicates. Three feeding periods with artemia nauplii were evaluated: zero, five, and ten days. In addition, five feeding transitions were tested: one, two, three, four and five days, when the animals received joint feeding of artemia nauplii and dry diet. At the end of the experiment the fish were counted, weighed and photographed, to evaluate the productive performance and the morphometric variables. For all parameters evaluated, no interaction between the time of artemia supply and the feeding transition period was observed. Animals fed for 10 days with artemia nauplii showed the best performance results and the highest morphometric variables. The fish that received joint feeding for three days presented satisfactory development. Thus, 10 days of artemia nauplii supply and three days of feeding transition is recommended before starting the exclusive supply of diet inert to post-larvae of severum.
DOI: 10.6084/m9.figshare.10074062
title: High-Frequency Induction Heating of Al-Si-Cu-Mg aluminum alloy in Thixoforming

description: Thixoforming is the process of shaping near net shape metal components in a semisolid state. The process consists of preparing feedstock, reheating and shaping. Reheating the billet is the most critical step in thixoforming. Induction heating requires precise temperature control to obtain globular microstructure and prevent process defects, such as insufficient heating, overheating, and electromagnetic end effect and elephant foot phenomena. Moreover, inductive heating parameters are investigated to improve the quality of thixoforming. This study investigates applied coil current and optimal coil geometry and design (i.e. height, diameter and coil turn) in high-frequency induction heating numerically and experimentally. Simulation results combined with an approximation approach method are verified via a reheating experiment. The proposed method validated via an experiment can be a practical tool for predicting temperature distribution and reheating time required for thixoforming.
DOI: 10.6084/m9.figshare.10074065
title: Influence of the Pre-Treatments and Process Temperature on the Adhesion of TiN Films Deposited by PBII&D Over Nitrided Austenitic Stainless Steel

description: In this work the influence of pre-treatment cleaning processes in the adhesion of TiN films deposited by the plasma based ion implantation and deposition (PBII&D) process over plasma nitrided AISI 316L stainless steel was investigated, varying the gas composition, the duration of the sputtering process and the temperature in the same deposition chamber. The TiN film morphology was scrutinized with scanning electron microscopy on the surface complemented with focus ion beam for the cross section. The film microstructure was characterized with X ray diffraction. The adhesion of the coatings was studied using the Scratch Test with constant load at different values and the Rockwell C indentation method as well. It was found that only with the sputtering carried out in a H2 - Ar gas mixing at 300 ºC temperature used as pre-treatment was successful to prepare the nitrided surface for the subsequent TiN deposition by the PBII&D process.
DOI: 10.6084/m9.figshare.10074068.v1
title: Bioaccessibility of Zinc from Yogurt and Determination of Total Concentration Using Slurry Sampling and Flame Atomic Absorption Spectrometry

description: The bioaccessibility of Zn during in vitro gastrointestinal digestion from yogurt was investigated. In addition, the methodologies of sample preparation (dry and wet digestion, and slurry sampling) for the determination of total concentration of Zn in yogurt by flame atomic absorption spectrometry were also compared in this work. In comparison with digestion procedures, the proposed slurry sampling is simple and less time-consuming procedure. The limit of quantification determined was 1.3 µg g-1. The concentrations of Zn in the Brazilian yogurt ranged from 3.40 to 5.62 µg g-1. The percentage of the bioaccessible fraction of Zn from the samples ranged from 10 to 26%. This corresponds to an average daily intake of less than 2% of the metal for adults and children, suggesting that the Brazilian yogurt contributes with a low amount of Zn for the human diet.
DOI: 10.6084/m9.figshare.10074074.v1
title: Feeding strategies on larval rearing of severum (Heros severus) (Heckel, 1840), Amazonian ornamental fish

description: ABSTRACT The aim of this study was to evaluate the supply time of artemia and the period of food transition to post-larvae of severum (Heros severus). A total of 450 post-larvae of severum were distributed in 45 aquaria, in a completely randomized design, in a 3x5 factorial scheme, with three replicates. Three feeding periods with artemia nauplii were evaluated: zero, five, and ten days. In addition, five feeding transitions were tested: one, two, three, four and five days, when the animals received joint feeding of artemia nauplii and dry diet. At the end of the experiment the fish were counted, weighed and photographed, to evaluate the productive performance and the morphometric variables. For all parameters evaluated, no interaction between the time of artemia supply and the feeding transition period was observed. Animals fed for 10 days with artemia nauplii showed the best performance results and the highest morphometric variables. The fish that received joint feeding for three days presented satisfactory development. Thus, 10 days of artemia nauplii supply and three days of feeding transition is recommended before starting the exclusive supply of diet inert to post-larvae of severum.
DOI: 10.6084/m9.figshare.10074065.v1
title: Influence of the Pre-Treatments and Process Temperature on the Adhesion of TiN Films Deposited by PBII&D Over Nitrided Austenitic Stainless Steel

description: In this work the influence of pre-treatment cleaning processes in the adhesion of TiN films deposited by the plasma based ion implantation and deposition (PBII&D) process over plasma nitrided AISI 316L stainless steel was investigated, varying the gas composition, the duration of the sputtering process and the temperature in the same deposition chamber. The TiN film morphology was scrutinized with scanning electron microscopy on the surface complemented with focus ion beam for the cross section. The film microstructure was characterized with X ray diffraction. The adhesion of the coatings was studied using the Scratch Test with constant load at different values and the Rockwell C indentation method as well. It was found that only with the sputtering carried out in a H2 - Ar gas mixing at 300 ºC temperature used as pre-treatment was successful to prepare the nitrided surface for the subsequent TiN deposition by the PBII&D process.
DOI: 10.6084/m9.figshare.10074071.v1
title: Neurological signs described at the Federal University of Rio de Janeiro: connecting the past to the future

description: ABSTRACT The Federal University of Rio de Janeiro (UFRJ) is one of the pillars of Brazilian Medicine and, in Neurology, has always shown prominence, with notable professors such as Antônio Austregésilo and Deolindo Couto. Historically, practitioners of the UFRJ Medical School have discovered neurological signs that, although used in medical and academic practice, have never been published. Objective Our aim was to bring these signs to the forefront so that they become properly recognized and studied. Methods We conducted our search by questioning 49 professors and physicians by e-mail about neurological signs that they remembered having had contact with at UFRJ. Results We report on the unpublished pillow sign in progressive supranuclear palsy; the Brazilian sandal sign in functional or malingering patients; the dermographism sign in acute meningitis; the reverse forearm rolling sign in functional palsies; the cycling maneuver in parkinsonian syndromes and the Sá Cavalcanti sign, a Babinski equivalent. We have also recollected the following published signs for their historical relevance: the Austregésilo sign (Antônio Austregésilo), another Babinski equivalent; the digiti quinti rolling sign in subtle palsies (Péricles Maranhão) and the digiti quinti sign in hemiplegic migraine (Maurice Vincent). These signs are easily reproduced and have potential clinical applicability, deserving to be more thoroughly studied. Conclusions Through a qualitative methodology, we have identified six original unpublished neurological signs known by the academic community, establishing the contribution of these individuals to the expansion of neurological semiology.
DOI: 10.6084/m9.figshare.10074053
title: Effects of Heat Treatment and Yb 3+ Concentration on the Downconversion Emission of Er 3+ /Yb 3+ Co-Doped Transparent Silicate Glass-Ceramics

description: The SiO2-Al2O3-BaF2-TiO2-CaF2 transparent silicate glass-ceramics containing BaF2 nanocrystals were successfully prepared by heat treatment process through conventional melting method. Effects of heat treatment processes and Yb3+ concentration on the downconversion (DC) emission of the co-doped Er3+/Yb3+ transparent silicate glass-ceramics were investigated. With the increase of temperatures and times of heat treatment process, the DC emission intensity of the co-doped Er3+/Yb3+ glass-ceramics was significantly enhanced. At the same time, with the increase of Yb3+ concentration, the value of DC intensity of Er3+/Yb3+ co-doped bands centered at 849, 883 and 1533 nm is maximized when the concentration of Yb3+ reaches 2.5 mol.%. When the concentration exceed 2.5 mol. %, the DC emission intensity of Er3+/Yb3+ co-doped bands centered at 849, 883 and 1533 nm was decreased, owing to the self-quenching effect. It’s interesting that the DC emission intensity of Er3+/Yb3+ co-doped band centered at 978 nm didn’t quench when the Yb3+ concentration exceed 2.5 mol. %. At the same time, the DC mechanism and ET processes between Yb3+ and Er3+ ions were discussed.
DOI: 10.6084/m9.figshare.10074056
title: Enrichment of Copper, Lead, and Tin by Mechanical Dry Processing of Obsolete Printed Circuit Board Residues

description: Waste printed circuit boards (WPCB) residues were mechanically processed to concentrate their metal content aiming to reduce costs of the subsequent recovery of copper, tin, and lead. A fully dry route was proposed to avoid the generation of liquid effluents that would require additional treatment. Firstly, 10.7% of the residue was segregated by magnetic separation; the remaining nonmagnetic fraction was comminuted and sieved. Ceramic and polymer materials (1/3 of the total weight) concentrated in the finer and the coarser size fractions, while metallic materials (2/3 of the total weight) concentrated in the intermediate size fraction (90.7, 94.5, and 95.6% of the total copper, tin, and lead contained in the milled WPCB, respectively). The fractions between 0.3-1.20 mm were submitted to gravity separation using a zig-zag air classifier; enrichment of copper (from 43±11% to 68±5%), tin (from 10±3% to 17±1%), and lead (from 4±1% to 6.4±0.5%) were obtained.
DOI: 10.6084/m9.figshare.10074062.v1
title: High-Frequency Induction Heating of Al-Si-Cu-Mg aluminum alloy in Thixoforming

description: Thixoforming is the process of shaping near net shape metal components in a semisolid state. The process consists of preparing feedstock, reheating and shaping. Reheating the billet is the most critical step in thixoforming. Induction heating requires precise temperature control to obtain globular microstructure and prevent process defects, such as insufficient heating, overheating, and electromagnetic end effect and elephant foot phenomena. Moreover, inductive heating parameters are investigated to improve the quality of thixoforming. This study investigates applied coil current and optimal coil geometry and design (i.e. height, diameter and coil turn) in high-frequency induction heating numerically and experimentally. Simulation results combined with an approximation approach method are verified via a reheating experiment. The proposed method validated via an experiment can be a practical tool for predicting temperature distribution and reheating time required for thixoforming.
DOI: 10.6084/m9.figshare.10074050
title: Scanning Electrochemical Microscopy (SECM) Study of the Electrochemical Behavior of Anodized AZ31B Magnesium Alloy in Simulated Body Fluid

description: In this work, scanning electrochemical microscopy (SECM) was employed to study the corrosion behavior of anodized AZ31B magnesium alloy exposed to simulated body fluid. SECM measurements were carried out in surface generation/tip collection mode. The hydrogen evolution flux caused during corrosion of the magnesium alloy was oxidized at the ultra-microelectrode (UME). Thus, this experimental procedure allowed evaluating the effect of the anodic protection in this alloy from the SECM analysis of Z- approximation curves, cyclic voltammograms and topographic maps. The results evidence differences in the local electrochemical response of magnesium alloy in the anodized and pristine conditions. The main sites of H2 evolution were verified in the magnesium alloy without anodizing at short exposure times.
DOI: 10.6084/m9.figshare.10074053.v1
title: Effects of Heat Treatment and Yb 3+ Concentration on the Downconversion Emission of Er 3+ /Yb 3+ Co-Doped Transparent Silicate Glass-Ceramics

description: The SiO2-Al2O3-BaF2-TiO2-CaF2 transparent silicate glass-ceramics containing BaF2 nanocrystals were successfully prepared by heat treatment process through conventional melting method. Effects of heat treatment processes and Yb3+ concentration on the downconversion (DC) emission of the co-doped Er3+/Yb3+ transparent silicate glass-ceramics were investigated. With the increase of temperatures and times of heat treatment process, the DC emission intensity of the co-doped Er3+/Yb3+ glass-ceramics was significantly enhanced. At the same time, with the increase of Yb3+ concentration, the value of DC intensity of Er3+/Yb3+ co-doped bands centered at 849, 883 and 1533 nm is maximized when the concentration of Yb3+ reaches 2.5 mol.%. When the concentration exceed 2.5 mol. %, the DC emission intensity of Er3+/Yb3+ co-doped bands centered at 849, 883 and 1533 nm was decreased, owing to the self-quenching effect. It’s interesting that the DC emission intensity of Er3+/Yb3+ co-doped band centered at 978 nm didn’t quench when the Yb3+ concentration exceed 2.5 mol. %. At the same time, the DC mechanism and ET processes between Yb3+ and Er3+ ions were discussed.