RCAAP Repository

The components that are currently being employed in industrial processes have been subjected to excessive wear due to: their increased usage, the low quality of these products and / or the maintenance and operation services that are provided them, the lack of expertise of the labor employed in the production processes, the decrease in reserves having minerals that are free of contaminants, and the mechanical properties of the metals that are contained in these components. In light of the above, it is clear that, within industrial sectors, substantial losses exist, be they in terms of cost, productivity, safety or even those losses that arise from the work having to be redone or from the dissatisfaction among the personnel due to the substandard performance of the machines and equipment that they must use. The application of materials engineering, through various studies, has developed techniques for the use of polymers in order to increase the service life of these components, resulting in the emergence of subassemblies and / or machines and equipment that are fundamental to this paradigm shift. The ever-present need to reduce costs in the industrial market, whether it be from replacement, breakdowns, refurbishment and accidents due to the premature wear of components, has become a feasible option for many organizations, and, in sum, summarizes the social relevance of this research. Thusly, the following question is being put forth as a research hypothesis: How can Materials Engineering that is focused on increasing the service life of industrial components be applied?

The loss of teeth often leads to the extrusion of antagonistic teeth, which results in occlusal interference and inadequate space to restore the prosthetic space. A prerequisite during the orthodontic treatment of dental and skeletal malocclusions is made using orthodontic anchorages, defined simply as a resistance to unwanted tooth movement and is fundamentally the basis for treating various occlusal disorders. Anchorage is achieved by means of extra and intraoral devices and the teeth themselves, these methods being limited, requiring some resources such as temporary anchoring devices (DAT), mini-implants or mini- screws. Because they have a small diameter, mini-implants have easier insertion, which expands the range of possibilities of the installation site, being efficient in the treatment with intrusion, as they offer more options for the correction of malocclusions without depending so much on the patients. Therefore, mini- implants provide fewer side effects, more comfort, a simple technique to be performed and a low cost and effectiveness of orthodontic treatments, which increases their therapeutic predictability and reduces the need for the patient to collaborate.

The Cerrado is the second largest biome in South America, occupying about 23% of the national territory, but which has been losing a large part of its native vegetation due to deforestation and anthropic fragmentation. This study aimed to understand the behavior of an area under restored in the biome, through the prognosis of the forest fragment using the class movement ratio method. Two forest inventories were carried out, in which all individuals with a CAP (circumference at chest height) greater than 15 cm were measured, for later adjustment of the nonlinear models of periodic increment, entry and mortality. Results showed individuals density loss of, indicating the phase transition from “construction” fragment to “degradation”. The main factors of degradation were accessibility to the site, disposal of urban waste and lack of planning for the restoration project, failing to take into account the principles of ecological succession and the survey of environmental reference information. However, the area showed regeneration capacity if the correct techniques are adopted that interfere with the restoration process, as there was an increase in the number of individuals in the smallest diameter class (2023) compared to previous years; increased growth in the penultimate class, followed by stabilization; reduction in the density loss of individuals, between the 2014-2017 and 2017-2023 intervals; and trend of the diametric distribution in “inverted J” in 2023.

The coverage of plants with agrotextiles of different colors and length of stay may influence the productivity of the crop. The objective of this study was to evaluate the influence of the use of colored agrotextiles and their length of stay on the cultivation of melon plants in the conditions of the semiarid region of Paraíba. The experiment was fulfilled out at the Experimental Farm of the Federal University of Campina Grande, located in the municipality of São Domingos – PB.  The treatments were distributed in a randomized block design in a 4 x 4 factorial scheme, with four repetitions and consisting of four colors of agrotextile (orange, white, gray, and blue) and four lengths of stay (15, 18, 21, and 24 days after transplanting).  The following characteristics were evaluated: active photosynthetic radiation, average temperature, number of fruits per plant, average fruit mass and total productivity. The use of colored agrotextiles associated with the length of stay promoted a change in the production characteristics of the yellow melon fruits. The highest productivity, number of fruits, and mass of the melon fruits were obtained when the plants were covered with the orange-colored agrotextile at 15, 18, and 24 days after transplantation, respectively. The long stay of the agrotextile affected the content of total soluble solids.

The common bean is a crop of great food, economic and social importance, in terms of production and consumption, it is an herbaceous legume, with a cycle around 95 days. Most cultivars used for cultivation in the Brazilian market express great genetic variability as to the onset of flowering and total cycle length. Therefore, the objective of this work was to evaluate the morphological and agronomic characterization of common bean genotypes regarding the precocity of cultivation. The experiment was conducted in EMAPER, in the city of Cáceres-MT, adopting the experimental design in randomized blocks with three repetitions, evaluating 58 common bean genotypes. The plots were composed of four rows of 4 m, with spacing of 0.5 m between rows. The evaluated characteristics were the number of days to flowering and crop cycle, the data were subjected to analysis of variance and comparison of means by the Scott-Knott grouping test at 1% probability. The genetic divergence was estimated by Tocher's optimization method and hierarchical UPGMA, based on the Generalized Mahalanobis Distance using the computer program GENES. It can be concluded that there is genetic variability among the evaluated common bean genotypes, and the genotypes 3 (BG-UNEMAT-11) and 57 (TB 02-23) showed fewer days to flowering (31 days) and shorter crop cycle (73 to 82 days), being the most suitable for breeding programs aiming precocity.

Individual infected with the Human Immunodeficiency Virus (HIV) have free access to Antiretroviral Therapy (ART), however for it to work it is necessary that the patient conducts the maintenance of the treatment, as the effectiveness of ART depends directly on the patient's compliance. The aim of the present study was to describe the adherence to ART of patients with HIV / AIDS treated by the Unified Health System in the State of Goiás. This is a cross-sectional descriptive study, developed at the health unit Dr. Ilion Fleury Jr., reference in diagnosis and treatment of STIs / AIDS in the city of Anápolis / GO. The “Survey for the assessment of adhesion to antiretroviral treatment - CEAT-HIV” was used to assess adherence to ART. The patients' medical records were analyzed to obtain laboratory results. Among the 88 patients included in the study, 74% (n = 65) were male, with a mean age of 37 years and 49% (n = 43) declared themselves to be heterosexual. When analyzing adherence, it was found that 81% (n = 72) had strict adherence, more than 87% of the participants had an undetectable viral load, with a TCD4 + lymphocyte count of ± 555 cells / mm³. The results of this study allow us to suggest a good adherence to the new ART scheme with dolutegravir, in addition to better viral load control.

To relate social isolation in the elderly and mortality, and its effects, psychic, emotional and social, in the elderly, caused by the pandemic of COVID-19. Research conducted as a Bibliographic Literature Review by the integrative review method, which summarizes theoretical literature to provide broad understanding about a given phenomenon. The PICo strategy, was used to construct research questions. The most vulnerable population group, with the highest lethality in relation to COVID-19, is the elderly. This fact is due to immunosenescence, which increases vulnerability to infectious diseases and brings the worst prognosis for those with chronic non-communicable diseases. However, the human being is not only biophysical, but also psychosociocultural. It is up to health professionals to suggest measures to contain the damage to the health of the elderly, as strategies for guidance on social isolation to avoid contamination, therefore, need specific knowledge about this population, aimed not only to combat COVID-19, as well as other health problems affecting this population.

The sweet sorghum resembles sugar cane because it has succulent stems and high levels of fermentable sugars, the crop is a renewable source capable of contributing to the increase of ethanol production in the inter-harvest sugarcane. In this way, the sweet sorghum becomes a complementary crop in the plant, in order to maintain and/or increase the ethanol supply in the market. In view of the above, this study aimed to evaluate the agronomic potential of sweet sorghum genotypes based on morphoagronomic characteristics. Twenty-five genotypes of sweet sorghum were evaluated in a randomized block design, with three repetitions, evaluating nine morphoagronomic characteristics. The data were submitted to analysis of variance and the Scott-Knott test at 1% probability, the correlation coefficients between the characteristics were also estimated by Pearson's correlation coefficient. Based on the results, it can be concluded that there is variability among the genotypes of sweet sorghum for the morphoagronomic characteristics evaluated. The genotypes CMSXS642, CMSXS646 and CMSXS647 performed better in relation to the characteristics evaluated, showing great promise for ethanol production.

Report the case of a 51-year-old man, who evolved insidiously with tetraparesis after firearm cervical injury 19 years ago, presenting with polyarthralgia, headache, abdominal pain, constipation, polyneuropathy and anemia. Given the diagnostic hypothesis of lead poisoning due to the high serum and urinary levels of lead, surgical removal of projectile in the cervical region was chosen, obtaining clinical improvement. After 5 months, he was readmitted with a relapse of the abdominal and anemic symptoms. Abdomen tomography revealed a possible projectile fragment on right rectus abdominis muscle. On hospitalization, he presented fever, polyarthralgia with fist monoarthritis and phlogistic signs on left bulging elbow, which was punctured. Literature review shows increased reabsorption of uric acid on lead poisoned patients added to the patient antecedent of Gout so we decide to treat the patient with anti-inflammatory drugs and prednisone, with clinical improvement. The study of liquid revealed calcium pyrophosphate crystals, contrasting gouty arthritis diagnosis. Patient underwent surgery to remove the projectile in the rectus abdominis muscle,  we decided not to prescribe chelating, due to the serum lead level below 50 mcg/dl and clinical patient improvement, who was discharged a few days later. We report this case due to the rarity of this association. We hope to raise a possible association of these pathologies with an unknown pathophysiological mechanism not yet described in medical clinic books and with only one case published in world literature.

The present study aimed to investigate the spatial variability of soil penetration resistance (SPR) in cultivation areas of ‘BRS Princesa’ banana, to evaluate its effects on the chemical and physical attributes of the soil and to indicate localized management. The experiment was carried out in an area of cultivation ‘BRS Princesa’ banana, in which 60 georeferenced points were recorded. SPR was measured from the cone index to 0.40 m depth using an impact penetrometer. Disturbed samples were collected at depths of 0-0.05, 0.05-0.10, 0.10-0.20 and 0.20-0.40 m and the soil attributes pH, Ca, Mg, Al, Na, K, P, H + Al, SB, T Value, V%, total sand, total clay, silt, TOC, POC, MAOC and gravimetric moisture were determined. The data were subjected to descriptive statistics, Pearson’s linear correlation and geostatistical analysis. SPR values in subsurface suggest greater compaction in subsurface and the significant correlations with soil attributes indicate losses for banana plants, so localized management should be carried out. It was found that 46.7% of the total area of the banana plantation does not need to be decompacted, and localized subsoiling at a varying depth is indicated in the other regions.

The theoretical study of the applications of Biomimetics in the construction and development of solutions brings together methods, concepts and examples of applications that can awaken creativity and, at the same time, critical thinking about the recovery of the balance between human action and nature. The inspiration of Biomimetics can raise awareness about the need to adopt new technologies, standards, and survival criteria, considering the environmental balance. In this sense, the objective of this study is to describe the use of Biomimetics as a promising agent for sustainable ideas to the problems identified in ambience in animal production. With a systematic analysis of the literature, proposals for solutions already used/designed to solve existing problems are presented, through analogies with natural systems. In this way, less widespread technologies or research are pointed out, such as fast and portable constructions, structures that favor the improvement of thermal and acoustic comfort, water and sewage treatment, and renewable energy consumption. All these technologies are promising in the process of optimizing structures for animal production.

Hypertensive patients with COVID-19 are susceptible to complications of the disease, so this study aimed to analyze the action of drugs that act on Angiotensin (TA) in the presence of COVID-19 in comparison with other antihypertensives, as well as to identify the main ones. evidence on the subject presented so far. It is an integrative literature review containing 34 articles selected according to the inclusion criteria, between January / 2020 to February / 2021, in the PubMed, Embase, Scopus and Web of Science databases. The results do not show a causal relationship between the increase in COVID-19 infection and the use of RAAS inhibitors, but a possible protective effect of these against the severe manifestation of the disease due to the inhibition of the pro-inflammatory diseases of AT II. Thus, about ⅔ of the studies defended the continuity of use and the protection factor of RAAS blockers to the detriment of the other classes of antihypertensive drugs that do not modulate RAAS. It was found, then, that antihypertensive treatment should be maintained, as it does not worsen the prognosis in the face of Sars-CoV-2 infection. However, the studies are mainly observational and, therefore, cannot establish strong causal relationships. For this reason, robust randomized controlled trials are needed to better understand this topic.

Brazilian agribusiness is gaining more and more international prominence thanks to the relevant production and export of agricultural commodities, as well as the great potential for development that this economic sector has in the country. The subject has attracted the attention of several researchers because, as the export sector grows, prices of these commodities for domestic consumption tend to rise, affecting the price of other foods. Understanding the dynamics of the price relation between these products is, therefore, of great value in order to avoid that possible financial crises also lead to food crises such as that of 2008. In order to contribute in this sense, the prices behavior of soybean, sugar, coffee and live cattle were analyzed here, as they are agricultural commodities produced on a large scale and traded worldwide. The study was based on the prices registered between 01/1997 and 12/2019, at CEPEA/ESALQ/USP, considering the periods before (07/1997 - 06/2007) and after (07/2007 - 12/2019) the 2008 crisis. The technique of analysis used was the Transfer Entropy - TE, that serves to quantify the flow of information between pairs of time series, as well as to obtain the direction of that flow. The technique was then applied to each pair of time series considering the pre-crisis and post-crisis periods. Results showed that the crisis affected the direction of information transfer between the pairs sugar-cattle, sugar-soybean and cattle-soybean. The time series prices of coffee, in turn, transmitted information to the other commodities in both periods.

Objectives: This paper aims to analyse current data in the literature about the clinical manifestations of COVID-19 in ophthalmology, the duration of the symptoms, and correlate them with the systemic manifestations. Methods: It is a narrative literature review, using the following search terms: coronavirus infection, betacoronavirus, COVID-19, ocular disease, and ocular manifestation, using the electronic databases LILACS and MEDLINE, searching for articles published between May to August 2020. Results: The initial search identified 824 articles and 14 attended the inclusion criteria. Of the reported cases of keratoconjunctivitis, the most described ocular manifestations are conjunctival hyperemia, monocular and binocular, and eyelid edema. Other symptoms that can appear frequently are diplopia and binocular diplopia; foreign body sensation, blurred vision, and presence of watery and viscous secretion.  Conclusion: In conclusion, the main ocular manifestation associated with the presence of SARS-CoV-2 is conjunctival hyperemia, with a variable duration between 2 and 30 days.

The objective of this work is to describe the nutritional and clinical profile of an adolescent with sickle cell disease, considering the consumption of macro and micronutrients, based on eating habits and anthropometric assessment. This is a single case study of a 16-year-old male teenager diagnosed with sickle cell disease, based on the theoretical framework of dialectics. The justification for the study was given by the identification of the failure in the nutritional monitoring of adolescents with sickle cell disease in the Multiprofessional Residency Program in Adolescent Health at the Federal University of São João del-Rei, Campus Centro-Oeste. Data collection was carried out from December 2020 to January 2021. It is believed that this study may bring short, medium and long term benefits for adolescents with sickle cell disease, for their families, for the community, for the educational institutions and science, since the identification of the nutritional status of adolescents with sickle cell disease favors the planning of actions aimed at promoting health, in order to minimize the damage to the quality of life in the entire health cycle. teenager's life.

This study aimed to evaluate the effect of dentin contamination and cleaning techniques on the bond strength of resin-modified glass ionomer (RMGI)/dentin interfaces.168 bovine teeth were selected and divided into twelve groups (n = 14), according to the contaminating agent (S - no contamination; Sa - saliva; Sg - blood; H - hemostatic) and cleaning technique (S - without cleaning; A - air and water spray; P - polyacrylic acid reconditioning 26%). All specimens were restored with Riva Light Cure (SDI) ionomeric material, sectioned (1.0 × 1.0 mm toothpicks), and subjected to the microtensile bond strength test and a thermocycling regimen (CT).  In the immediate analysis, all contaminated groups without cleaning had the following adhesion values when compared with the control group. After thermocycling, in the groups without cleaning only the hemostatic was identified to the control. The Sa groups maintained the immediate analysis standard, while the Sg groups were similar to the control, regardless of the time analyzed. Groups H were similar to each other. In conclusion, the contaminants tested impaired the immediate adhesion of the ionomeric material to dentin. Substrate reconditioning was effective in specimens contaminated with saliva and hemostatic agent. However, bond strength values reduced after aging.

Sliding hiatus hernias are uncommon in dogs and cats, although they are often described in humans. They can be classified into four types, with sliding hiatus hernia being the most prevalent in small animals. This condition can often lead to regurgitation and aspiration pneumonia, but it can also be asymptomatic. The purpose of this report is to describe a case of sliding hiatus hernia in a six-month-old Persian cat with regurgitation after stress. The patient was submitted to a simple radiographic exam, which showed no alterations, and contrasted radiography, in which it was possible to identify the protrusion of the stomach through the gastroesophageal junction. The treatment instituted was anti-inflammatory, antacid, and fractionation of food intake, aiming at the recovery of esophagitis and reducing gastric emptying time. Six months after diagnosis, the animal had no more clinical symptoms, and in a new imaging exam, it did not show protrusion of the stomach, thus concluding the efficacy in drug treatment and the importance of the contrasted radiography for diagnosis.

Objective: To analyze the contributions of a university extension to the learning of health care for residents of Family and Community Health. Methodology: This is a research with a qualitative, descriptive and observational approach, composed of 8 residents participating in an extension project. The extension project, consists of the creation of conversation circles with therapists specialized in the care of Autism Spectrum Disorder, and its target audience is the community in general that is interested in the theme or who are caregivers of people with autism. The residents were interviewed, the data were recorded by the researcher and according to the Content Analysis proposed by Bardin16, in which they were transcribed in full and analyzed for the construction of the research. Results: According to the analysis of the testimonies, projects focused on this theme can contribute to prepare professionals for new challenges, in addition to contributing to the more humanized training of these professionals, since the testimonies arouse the need for a loving look at those who care. Conclusion: the experience contributed to generate reflections on the sensitivity of care to residents, allowing a look and attention to the needs of the community.

In recent years, the increase in the search for medicinal and nutritional alternatives in the field of health has led to the search for plants present in the daily lives of the population. Consequently, several surveys aimed to assess the potential and health benefits. Therefore, the objective of the study is to carry out a literature review on the potential medicinal and nutritional use of the Ilex paraguariensis plant. Researches were carried out in the databases PubMed, EMBASE, Virtual Health Library (VHL), Cochrane Library, Web of Science, using the descriptors selected in MeSH, DeCs and Entree. The searches were carried out in the period of January 2020. The inclusion criterion used included articles from the last 20 years, including literature reviews. After the searches, 12 articles were selected to compose the literature review. Ilex paraguariensis showed capacity for antimicrobial and anti-inflammatory activity. The extracts of yerba mate were able to inhibit microorganisms: Salmonella enteritidis, Candida albicans, Proteus mirabilis, Pseudomas aeruginosa, Staphylococcus aureus, Staphylococcus epidermidis, Staphylococcus mutans, Listeria monocytogenes, Propionibacterium acnes, Enterobacteri cloacae, Bacillus cereus, Micrococcus flavus, Aspergillus fumigatus, Aspergillus versicolor, Aspergillus ochraceus, Aspergillus niger, Candida crusei, Penicillium funiculosum, Penicillium verrucosum var. ciclopium, Klebsiella pneumoniae, Enterobacter agglomerans, Enterobacter aerogeneses, Serratia marcesens, Proteus mirabilis. However, there was no consensus in the literature on activity against Escherichia coli, Enterococcus faecalis and Acinetobacter baumannii. Thus, yerba mate has an antimicrobial potential under some microorganisms, but further studies are needed for a more efficient analysis of the action against bacteria and a possible clinical application.

This study brings the importance of constant educational actions to the professionals of the Jockey Club de Pelotas (JCP). The extension project “ClinEq – Group Of Teaching, Research and Extension in Equine Medicine at the Veterinary Faculty of UFPEL in partnership with the JCP carried out professional training in order to offer knowledge and evaluate the professionals perception of good management practices with racehorses. Six meetings were held with an exposition of the main management themes and three questionnaires regarding the coaches perception in relation to the subject addressed. During the training sessions, it was observed that the participating professionals showed great interest in the content and took advantage of all the topics covered, understanding it as a gain in their professional performance and improving their understanding of the content. Achieving, during the training period, put into practice some of the suggestions presented to improve good handling practices with horses at JCP.