cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.6857111
title: Precipitation of uranium from alkaline liqueurs

description: ABSTRACT In Argentina there is uranium with abundant organic matter and variety in quantity of sulfides and carbonates which act as cement or sealing joints. The latter minerals modify directly the choice of metal leaching process for the concentration of uranium. The most beneficial selected process turns out to be the alkaline leaching. Once this process has been finished, using the lixiviante agent such as Na2CO3 NaHCO3 in presence of oxidizing agent, the hexavalent state of uranium as U3O8 has been achieved. In this research the experimental design is proposed at the laboratory level, in order to obtain the precipitation of uranium from alkaline leach liquors using two different precipitation mechanisms. One of them uses a strong oxidizing agent such as excessive hydrogen peroxide. Stoichiometrically, 0.9 g of H2O2 were used, obtaining the uranium precipitation as UO2*2H2O. The working variables are lightly acidic pH values, for values between 2.5, 4 to 5 and reaction times with mineral exposure of 1, 2, 3 and 4 hours. Working temperatures are 25 °C, 60 °C and 80 °C for a constant stirring speed of 400 rpm. In the other mechanism, a precipitating agent such as NaF in alkaline medium is added, without modifying the pH of leached liquors, generating an insoluble compound such as NaUF6. For this purpose we worked with different: concentrations of the precipitating agent, stirring speed and precipitation times. However, the first mechanism proved to be the best. Uranium recovery values were found for working conditions of pH: 2.5; temperature of 60 ºC and reaction times higher than 3 h until 4h.
DOI: 10.6084/m9.figshare.6857099
title: Evaluation of zeolite inclusion and level of food intake on diet digestibility and faecal characteristics of dogs

description: ABSTRACT This study aimed to evaluate the form of inclusion of zeolite and consumption levels on diet digestibility and fecal characteristics of dogs. The first experiment examined the effect of consumption level (normal and 50% higher than the requirements) and zeolite level (0 and 15g/kg) on diet digestibility and fecal characteristics of 12 dogs. In experiment 2 the inclusion of 5, 15 and 25g/kg of added zeolite in dough or coating in six dogs on diet digestibility and fecal characteristics was evaluated. The third experiment assessed the fecal odor of nine dogs fed diets containing 0 and 15g/kg of zeolite included in the dough or coating. The amount consumed, as well as the inclusion of zeolite, did not affect diet digestibility. Fecal score and dry matter increased with the inclusion of zeolite. The inclusion of zeolite in the dough provided an increase in diet digestibility, regardless of the level of inclusion. The inclusion of 15g/kg zeolite added to the dough and by coating reduced fecal odor of dogs. The inclusion of zeolite in dough increases diet digestibility, fecal consistency, and reduces the fecal odor of dogs.
DOI: 10.6084/m9.figshare.6857102
title: Beef heifers performance in ryegrass pasture supplemented with rice bran with or without monensin

description: ABSTRACT The experiment was carried out with the objective of evaluating beef cattle heifer performance when exclusively grazing Italian ryegrass (Lolium multiflorum Lam.) pasture or supplemented with whole rice bran (WRB), equivalent to 0.8% of body weight, associated or not with monensin. The grazing method was “put-and-take” stocking, in a completely randomized experimental design, with replicated measures over time, with three treatments and three replications of area. The use of WRB, associated or not with monensin, did not affect heifers’ pelvic area, stocking rate and area weight gain. Animals fed WRB, with or without monensin, showed greater average daily gain, body weight, body condition score, and body weight:height ratio. Energetic supplementation for beef heifers is one viable option in production systems seeking age reduction at the first mating.
DOI: 10.6084/m9.figshare.6857099.v1
title: Evaluation of zeolite inclusion and level of food intake on diet digestibility and faecal characteristics of dogs

description: ABSTRACT This study aimed to evaluate the form of inclusion of zeolite and consumption levels on diet digestibility and fecal characteristics of dogs. The first experiment examined the effect of consumption level (normal and 50% higher than the requirements) and zeolite level (0 and 15g/kg) on diet digestibility and fecal characteristics of 12 dogs. In experiment 2 the inclusion of 5, 15 and 25g/kg of added zeolite in dough or coating in six dogs on diet digestibility and fecal characteristics was evaluated. The third experiment assessed the fecal odor of nine dogs fed diets containing 0 and 15g/kg of zeolite included in the dough or coating. The amount consumed, as well as the inclusion of zeolite, did not affect diet digestibility. Fecal score and dry matter increased with the inclusion of zeolite. The inclusion of zeolite in the dough provided an increase in diet digestibility, regardless of the level of inclusion. The inclusion of 15g/kg zeolite added to the dough and by coating reduced fecal odor of dogs. The inclusion of zeolite in dough increases diet digestibility, fecal consistency, and reduces the fecal odor of dogs.
DOI: 10.6084/m9.figshare.6857102.v1
title: Beef heifers performance in ryegrass pasture supplemented with rice bran with or without monensin

description: ABSTRACT The experiment was carried out with the objective of evaluating beef cattle heifer performance when exclusively grazing Italian ryegrass (Lolium multiflorum Lam.) pasture or supplemented with whole rice bran (WRB), equivalent to 0.8% of body weight, associated or not with monensin. The grazing method was “put-and-take” stocking, in a completely randomized experimental design, with replicated measures over time, with three treatments and three replications of area. The use of WRB, associated or not with monensin, did not affect heifers’ pelvic area, stocking rate and area weight gain. Animals fed WRB, with or without monensin, showed greater average daily gain, body weight, body condition score, and body weight:height ratio. Energetic supplementation for beef heifers is one viable option in production systems seeking age reduction at the first mating.
DOI: 10.6084/m9.figshare.6857093
title: Comparative analysis of rotating rake teeth for agricultural use

description: ABSTRACT This study is aligned with the objective of the research project to support small business in the development of regional components. It is presented an analysis case performed as assistance to a producer in search of optimization in the quality of his line of agricultural use. The study applicant needs to find a root cause of the difference in in-service behavior of the lateral rake teeth between those of their own manufacture and others available on the local market. These are curved steel rods with a diameter of 8 mm x 1300 mm, which are integrated into multi-tooth wheels which must show a totally elastic behavior during their use. The study is carried out on 4 samples received from different manufacturers. Using chemical and metallographic analysis, microhardness measurement and tensile tests, the characteristics of the different samples have been compared. It is concluded that the heat treatment of quenching and tempering, subsequent to the cold forming of the rod, increases the limit of elasticity by an average of 45% relative to the pieces that only have cold plastic deformation. [3, 4, 5, 6, 7]
DOI: 10.6084/m9.figshare.6857093.v1
title: Comparative analysis of rotating rake teeth for agricultural use

description: ABSTRACT This study is aligned with the objective of the research project to support small business in the development of regional components. It is presented an analysis case performed as assistance to a producer in search of optimization in the quality of his line of agricultural use. The study applicant needs to find a root cause of the difference in in-service behavior of the lateral rake teeth between those of their own manufacture and others available on the local market. These are curved steel rods with a diameter of 8 mm x 1300 mm, which are integrated into multi-tooth wheels which must show a totally elastic behavior during their use. The study is carried out on 4 samples received from different manufacturers. Using chemical and metallographic analysis, microhardness measurement and tensile tests, the characteristics of the different samples have been compared. It is concluded that the heat treatment of quenching and tempering, subsequent to the cold forming of the rod, increases the limit of elasticity by an average of 45% relative to the pieces that only have cold plastic deformation. [3, 4, 5, 6, 7]
DOI: 10.6084/m9.figshare.6857096
title: Optimización de un procedimiento para la determinación de oro mediante espectrofotometría UV/Vis

description: ABSTRACT The main objective of the research group is the recovery of valuable metals (contained in PCB’s) such as Cu, Au, Ag, Pt, Pd, etc., by hydrometallurgical alternatives to the current ones used in mining. One of the biggest difficulties that has encountered the research group is the lack of availability of an adequate, simple and reliable quantitative and qualitative determination technique of such metal values contained in the experimental technical solutions. This paper presents the preliminary results obtained in carrying out various laboratory experiments aimed at building calibration curves and patterns to determine gold contents by UV/VIS absorption spectrophotometry technique. These experiments where carried on by dissolution of pure gold in an aqua regia solution (made with three parts of HCl per each of HNO3). Afterwards, the gold was extracted from the aqueous solution by an organic solvent (methyl-isobutyl-ketone or MIBK) and diluted solutions were analyzed with the spectrophotometer. Both direct absorbance spectra and second order derivative spectra were taken into consideration. Besides, it was evaluated the feasibility of applying this analysis technique on shredded samples of PCB’s. The results showed that it is possible the construction of a standard curve using wavelengths around 332 nm and the analytical method is applicable to shredded electronic cards.
DOI: 10.6084/m9.figshare.6857096.v1
title: Optimización de un procedimiento para la determinación de oro mediante espectrofotometría UV/Vis

description: ABSTRACT The main objective of the research group is the recovery of valuable metals (contained in PCB’s) such as Cu, Au, Ag, Pt, Pd, etc., by hydrometallurgical alternatives to the current ones used in mining. One of the biggest difficulties that has encountered the research group is the lack of availability of an adequate, simple and reliable quantitative and qualitative determination technique of such metal values contained in the experimental technical solutions. This paper presents the preliminary results obtained in carrying out various laboratory experiments aimed at building calibration curves and patterns to determine gold contents by UV/VIS absorption spectrophotometry technique. These experiments where carried on by dissolution of pure gold in an aqua regia solution (made with three parts of HCl per each of HNO3). Afterwards, the gold was extracted from the aqueous solution by an organic solvent (methyl-isobutyl-ketone or MIBK) and diluted solutions were analyzed with the spectrophotometer. Both direct absorbance spectra and second order derivative spectra were taken into consideration. Besides, it was evaluated the feasibility of applying this analysis technique on shredded samples of PCB’s. The results showed that it is possible the construction of a standard curve using wavelengths around 332 nm and the analytical method is applicable to shredded electronic cards.
DOI: 10.6084/m9.figshare.6857084
title: Heat Shock Proteins: Protection and Potential Biomarkers for Ischemic Injury of Cardiomyocytes After Surgery

description: Abstract The heat shock proteins are endogenous proteins with the ability to act as molecular chaperones. Methods that provide cell protection by way of some damage can positively influence the results of surgery. The present review summarizes current knowledge concerning the cardioprotective role of the heat shock proteins as occurs in heart damage, including relevant information about the stresses that regulate the expression of these proteins and their potential role as biomarkers of heart disease.
DOI: 10.6084/m9.figshare.6857084.v1
title: Heat Shock Proteins: Protection and Potential Biomarkers for Ischemic Injury of Cardiomyocytes After Surgery

description: Abstract The heat shock proteins are endogenous proteins with the ability to act as molecular chaperones. Methods that provide cell protection by way of some damage can positively influence the results of surgery. The present review summarizes current knowledge concerning the cardioprotective role of the heat shock proteins as occurs in heart damage, including relevant information about the stresses that regulate the expression of these proteins and their potential role as biomarkers of heart disease.
DOI: 10.6084/m9.figshare.6857078
title: Adsorption of anions on Ag nanostructured electrodes on HOPG

description: ABSTRACT The structure and properties of the electrochemical interface result from the interactions that occur between the different components of an electrolytic solution and the metal electrode. In particular, the anion / metal interactions have been of great interest in recent years, mainly due to the development of new techniques that have allowed the study of in situ and ex situ tests of the characteristics of this chemical adsorption bond. Specifically adsorbed ions modify the charge distribution and the structure of the interface, affecting the processes that occur in this interface. Therefore the detailed knowledge of the anion / electrode interactions are extremely important, such as the electrochemical processes of corrosion, UPD and Electrocatalysis. This paper aims to analyze the tendency of synthesized nanostructured electrodes (Ag / HOPG) to adsorb anions, such as Cl- and Br-. The results indicate that the Ag nanostructures have the ability to adsorb anions, but the behavior is different from their monocrystals.
DOI: 10.6084/m9.figshare.6857081
title: Synthesis and characterization of lithiated nanostructures

description: ABSTRACT Regardless of the simple accumulation of ions in the crystal insertion sites, nanomaterials offer a new storage mechanism of lithium ions (Li+), these storage mechanisms are formed in the interfaces and inside of the nanopores. Such kinds of storage mechanisms have no effect on the structure of the electrode material. Consequently, the charge-discharge process can continue for prolonged times. Note that singular novel nanomaterials can be developed in various shapes (rods, plates, tubes, particles, etc.) and dimensions (e.g. 0D, 1D, 2D, 3D). Each of these different possibilities of shapes and dimensions offers its specific advantages and disadvantages. Therefore, a large variety of morphological structures offering increased quantity and availability of storage sites for Li + could be designed. In this work nanoparticles of lithiated oxide of transition metals have been synthesized and characterized. The synthesis of crystalline nanostructures generally requires a heat treatment, which involves controlled synthesis conditions. The synthesis of nanoparticles was based on the non-hydrolytic sol-gel method, considering acetates as chemical precursors. This approach presents an alternative to the usual sol-gel hydrolytic routes. Non hydrolytic methods in particular lead to improved control over the homogeneity and stoichiomtry level for multiple oxides components. The crystal structure of the nanocrystals was determined by X-ray diffraction (XRD). The morphology, the size and the composition of the particles were analyzed by using a scanning electron microscope equipped with a microprobe for energy dispersive X-ray spectroscopy.
DOI: 10.6084/m9.figshare.6857075
title: The influence of probiotic additives or multienzyme composition on blood biochemical parameters and milk quality of Lithuanian Black-and-White cattle

description: ABSTRACT The aim of the study was to determine the effect of Saccharomyces cerevisiae, multienzyme composition supplementation on milk yield, quality, blood biochemical parameters of Lithuanian-Black-and-White cows. For this reason 28 cows were divided into four groups (three experimental and one control) each with seven cows fed balanced ration (control group) and following experimental groups: addition of 40g supplement of live yeast with organic selenium (group A); 40g supplement of live yeast with aromatic additives (group B); and 0.2g supplement of multienzyme composition (group C) during a 90 days period. The study showed that milk yield was 2.64%, 1.75%, 1.4% higher in groups A, B, C respectively, comparing with the control group. The milk SCC in experimental groups were lower comparing to the control group. The percentage of milk fat was significantly higher in group A - 0.33%, B - 0.31% and C - 0.16% comparing with the control group. All used additives ensure positive dynamics of investigated biochemical parameters in cattle blood. The results indicated that probiotic additives and multienzyme composition supplementation to dairy cows increased cows productivity and milk fat as well. Probiotic additives supplementation decreased SCC values in milk.
DOI: 10.6084/m9.figshare.6857081.v1
title: Synthesis and characterization of lithiated nanostructures

description: ABSTRACT Regardless of the simple accumulation of ions in the crystal insertion sites, nanomaterials offer a new storage mechanism of lithium ions (Li+), these storage mechanisms are formed in the interfaces and inside of the nanopores. Such kinds of storage mechanisms have no effect on the structure of the electrode material. Consequently, the charge-discharge process can continue for prolonged times. Note that singular novel nanomaterials can be developed in various shapes (rods, plates, tubes, particles, etc.) and dimensions (e.g. 0D, 1D, 2D, 3D). Each of these different possibilities of shapes and dimensions offers its specific advantages and disadvantages. Therefore, a large variety of morphological structures offering increased quantity and availability of storage sites for Li + could be designed. In this work nanoparticles of lithiated oxide of transition metals have been synthesized and characterized. The synthesis of crystalline nanostructures generally requires a heat treatment, which involves controlled synthesis conditions. The synthesis of nanoparticles was based on the non-hydrolytic sol-gel method, considering acetates as chemical precursors. This approach presents an alternative to the usual sol-gel hydrolytic routes. Non hydrolytic methods in particular lead to improved control over the homogeneity and stoichiomtry level for multiple oxides components. The crystal structure of the nanocrystals was determined by X-ray diffraction (XRD). The morphology, the size and the composition of the particles were analyzed by using a scanning electron microscope equipped with a microprobe for energy dispersive X-ray spectroscopy.
DOI: 10.6084/m9.figshare.6857078.v1
title: Adsorption of anions on Ag nanostructured electrodes on HOPG

description: ABSTRACT The structure and properties of the electrochemical interface result from the interactions that occur between the different components of an electrolytic solution and the metal electrode. In particular, the anion / metal interactions have been of great interest in recent years, mainly due to the development of new techniques that have allowed the study of in situ and ex situ tests of the characteristics of this chemical adsorption bond. Specifically adsorbed ions modify the charge distribution and the structure of the interface, affecting the processes that occur in this interface. Therefore the detailed knowledge of the anion / electrode interactions are extremely important, such as the electrochemical processes of corrosion, UPD and Electrocatalysis. This paper aims to analyze the tendency of synthesized nanostructured electrodes (Ag / HOPG) to adsorb anions, such as Cl- and Br-. The results indicate that the Ag nanostructures have the ability to adsorb anions, but the behavior is different from their monocrystals.
DOI: 10.6084/m9.figshare.6857072
title: Isolation and genotyping of Clostridium perfringens from goats in Minas Gerais, Brazil

description: ABSTRACT: Despite the known importance of Clostridium perfringens as an enteropathogen in small ruminants, little is known about the role of its additional virulence factors or the frequency of the various C. perfringens genotypes in healthy goats; this complicates the laboratory diagnosis of the infections caused by this microorganism. In light of this, the aim of the present study was to isolate and genotype C. perfringens from stool samples from healthy goats in Brazil. Stool samples from 250 apparently healthy adult goats from 17 different herds in Minas Gerais, Brazil were collected, and isolation and genotyping of C. perfringens was performed. C. perfringens type A was isolated from 189 (75.6%) goats, whereas C. perfringens types C and D were each detected in one goat (0.4%). All isolates were negative for enterotoxin-, NetB-, NetE-, and NetF-encoding genes. These results confirmed C. perfringens type A as part of the microbiota in these animals, and they suggested that C. perfringens type C and D are rarely isolated from healthy goats.
DOI: 10.6084/m9.figshare.6857075.v1
title: The influence of probiotic additives or multienzyme composition on blood biochemical parameters and milk quality of Lithuanian Black-and-White cattle

description: ABSTRACT The aim of the study was to determine the effect of Saccharomyces cerevisiae, multienzyme composition supplementation on milk yield, quality, blood biochemical parameters of Lithuanian-Black-and-White cows. For this reason 28 cows were divided into four groups (three experimental and one control) each with seven cows fed balanced ration (control group) and following experimental groups: addition of 40g supplement of live yeast with organic selenium (group A); 40g supplement of live yeast with aromatic additives (group B); and 0.2g supplement of multienzyme composition (group C) during a 90 days period. The study showed that milk yield was 2.64%, 1.75%, 1.4% higher in groups A, B, C respectively, comparing with the control group. The milk SCC in experimental groups were lower comparing to the control group. The percentage of milk fat was significantly higher in group A - 0.33%, B - 0.31% and C - 0.16% comparing with the control group. All used additives ensure positive dynamics of investigated biochemical parameters in cattle blood. The results indicated that probiotic additives and multienzyme composition supplementation to dairy cows increased cows productivity and milk fat as well. Probiotic additives supplementation decreased SCC values in milk.