bluuebunny/crossref_metadata_2025 huggingface dataset:
Seedling length and soybean seed vigor
Authors: Meneguzzo Michele Renata Revers , Meneghello Géri Eduardo , Nadal Ariele Paula , Xavier Fernanda da Mota , Dellagostin Simone Morgan , Carvalho Ivan Ricardo , Gonçalves Vanessa Pinto , Lautenchleger Francine , Lângaro Nadia Canali
Published: March 2021

ABSTRACT: The differentiation of seedling growth and development is the result of the vigor level of the seed lot. Because of this, knowing the seedling growth curve is essential for the evaluation of the seedling length test, to be carried out at the moment when any differences in vigor really manifest, thus being able to reduce the time of evaluation of the test. In this research, the objective was to determine the most efficient time interval to perform the seedling length test in soybean seeds, depending on the vigor levels. The evaluated characteristics were percentage of seed germination, first germination count, emergency, days for emergence, aerial, root and total length (evaluated every 12 hours), aerial, root and total dry mass in completely randomized design. High vigor seeds originated seedlings with higher growth rates (cm. h-1), with vigor being one of the factors that interfere in the seedling length test. After 96 hours of the seedling length test, there was a statistical differentiation between the three vigor levels tested. The soybean seedling length test between lots, with different vigor, can be performed 96 hours after sowing.
Capital femoral physeal dysplasia in cats submited to ostectomy of the femoral head and neck
Authors: Moi Tryssia Scalon Magalhães , Pires Marco Aurélio Molina , Yamauchi Kelly Cristiane Ito , Dias Luís Gustavo Gosuen Gonçalves , Minto Bruno Watanabe
Published: March 2021

ABSTRACT: This report described pathological fracture of the femoral head (physeal dysplasia) in four male cats (three mixed breed and one Bengal), with an average age of 16 months, treated by an ostectomy of the femoral head and neck. Three cats were neutered and one entire. All presented with mild intermittent lameness in the pelvic limbs. Displacement of the femoral epiphysis and resorption of the femoral neck were present and excision of the femoral head and remaining neck was performed in all cases. Hstological examination showed mild foci of compaction and trabecular fibrosis with deposition of fibrous connective tissue, permeated by granulation tissues, consistent with the original diagosis. Limb function improved in all patients from 2 to 4 weeks postoperatively. Diagnosis of physeal dysplasia is challenging and treatment is different from acute traumatic fractures. Femoral head and neck excision was considered a good alternative in these patients.
Biofortification efficiency with magnesium salts on the increase of bioactive compounds and antioxidant capacity in snap beans
Authors: Ciscomani-Larios Juan Pablo , Sánchez-Chávez Esteban , Jacobo-Cuellar Juan Luis , Sáenz-Hidalgo Hilda Karina , Orduño-Cruz Nuvia , Cruz-Alvarez Oscar , Ávila-Quezada Graciela Dolores
Published: March 2021

ABSTRACT: Biofortification of food crops is implemented through the application of mineral fertilizers, to improve the levels of essential mineral elements for human nutrition. Magnesium is a key macronutrient in crop production and quality; however, worldwide, it is the most limiting macronutrient in agriculture. Magnesium plays an important role in manipulating physiological and biochemical processes in plants. Therefore, the objective of this study was to evaluate the efficacy of biofortification with magnesium chloride and sulfate on the accumulation of bioactive compounds and antioxidant capacity in snap bean cv. Strike. Two sources of Magnesium were applied via edaphic route: Magnesium chloride and magnesium sulfate at doses of 0, 50, 100 and 200 ppm during 2018 in Mexico. Accumulation of bioactive compounds (total phenols, total flavonoids and total anthocyanins) and antioxidant capacity in snap bean fruits were evaluated. Results obtained indicate that the concentration of total flavonoids, total anthocyanins and antioxidant capacity in the edible parts of snap beans were higher in the MgSO4 treatment than in the MgCl2 treatments, exceeding 30, 59 and 6% respectively. This is one of the first studies on the edaphic agronomic biofortification of Mg+ and its effect on nutraceutical quality in snap bean. An interesting result is that MgSO4 produced high concentrations of anthocyanins in edible snap beans. These results can be applied as a new strategy to reduce malnutrition and improve the health of the population in poor urban and rural communities in developing countries.
Spatial variability of soil penetration resistance in the lowland area cultivated with soybean
Authors: Brasil Neto Edgar Salis , Russini Alexandre , Amaral Lúcio de Paula , Pinho Paulo Jorge de , Farias Marcelo Silveira de , Giacomeli Robson
Published: March 2021

ABSTRACT: This study determined the spatial variability of soil penetration resistance and yield of the soybean crop in lowland areas. The soil resistance to penetration at four different depths (0 to 0.10 m; 0.11 to 0.20 m; 0.21 to 0.30 m and 0.31 to 0.40 m), volumetric humidity of the soil at two depths (0 to 0.20 m and 0.21 to 0.40 m) and soybean yield were determined in an area of 1.13 hectares, using a sample mesh of 10 x 10 m. The corresponding data were subjected to descriptive statistical analysis. Pearson’s simple linear correlation analysis (p≤0.05) was conducted and the spatial dependence was assessed by analyzing the isotropic semivariograms using spherical, exponential, linear, and Gaussian models. The results showed that the soil penetration resistance increased with depth, with restrictive values to root growth between 0.05 and 0.35 m. There was no correlation between yield and soil penetration resistance, and the semivariograms did not show a defined ascending region regarding the soil penetration resistance data. For the conditions under which the experiment was conducted, the sample 10 x 10 m mesh was suitable for assessing the spatial variability of soil resistance to penetration in depths exceeding 0.10 m.
Blue and red light photoemitters as approach to inhibit Staphylococcus aureus and Pseudomonas aeruginosa growth
Authors: Galo I. D. C. , Prado R. P. , Santos W. G. Dos
Published: March 2021

Abstract The ability of pathogenic bacteria acquire resistance to the existing antibiotics has long been considered a dangerous health risk threat. Currently, the use of visible light has been considered a new approach to treat bacterial infections as an alternative to antibiotics. Herein, we investigated the antimicrobial effect of two range of visible light, blue and red, on Staphylococcus aureus and Pseudomonas aeruginosa, two pathogenic bacterial commonly found in healthcare settings-acquired infections and responsible for high rate of morbidity and mortality. Bacterial cultures were exposed to blue or red light (470 nm and 660 nm) provided by light-emitting diodes - LED. The fluencies and irradiance used for blue and red light were 284.90 J/cm2, 13.19 mW/cm2 and 603.44 J/cm2, 27.93 mW/cm2 respectively. Different experimental approaches were used to determine the optimal conditions of light application. Only exposure to blue light for 6 hours was able to inhibit about 75% in vitro growth of both bacterial species after 24 hours. The surviving exposed bacteria formed colonies significantly smaller than controls, however, these bacteria were able to resume growth after 48 hours. Blue light was able to inhibit bacterial growth upon inoculation in both saline solution and BHI culture medium. We can conclude that blue light, but not red light, is capable of temporarily retarding the growth of gram negative and gram positive bacteria.
Community structure of benthic invertebrates in the Allipén River basin, North Patagonia, Araucania region (38º S, Chile)
Authors: Solis-Lufí K. , Suazo M. J. , Avila-Salem M. E. , Maldonado-Murúa C. , Aponte H. , Farias J. , Rios-Escalante P. De Los
Published: March 2021

Abstract One of the biological indicators most used to determine the health of a fluvial ecosystem are the benthic macroinvertebrates. The presence of recurrent species in a wide gradient of latitudes, dominates the biogeographic pattern of the benthic macroinvertebrates in Chilean fresh waters, nevertheless the knowledge on the communitarian ecology of these in the Chilean rivers continues to be scarce. Null models became a powerful statistical tool for describing the ecological mechanisms that drive the structure of an ecological community and the underlying patterns of diversity. The objective of this study was to determine the community structure of benthic invertebrates in the Allipén River by describing their composition, richness and abundance of species through richness models and null models based on presence/absence. The results reveal a high family richness and low diversity, three phyla, five classes, 11 orders and 28 families were identified in the study area during the four seasons of the year. The Arthropoda phylum was the most representative in abundance and richness. Regarding to richness, Trichoptera (7 families) and Diptera (6 families) followed by Ephemeroptera (3 families) were the orders that showed the greatest diversity of families, however, a low diversity with a H’≤ 1.5 nit was registered in the study area. We demonstrated through the null models, the randomization in the species associations corresponding to the three analyzed sites. The information provided here contributes to the understanding of the ecological patterns of the invertebrate communities in the Allipén River, establishing the basis for more complex ecological studies.
Hematology and blood biochemistry profile of the freshwater stingray Potamotrygon magdalenae as a tool for population assessment in artificial environments
Authors: Pérez-Rojas J. G. , Mejía-Falla P. A. , Navia A. F. , Tarazona A. M. , Pardo-Carrasco S. C.
Published: March 2021

Abstract Hematological and blood biochemical reference information is important to establish physiological status of freshwater stingray populations and improve care and management protocols in artificial environments. Here, we used a commercial freshwater stingray with high mortality rates in the market (Potamotrygon magdalenae), as an example to understand how artificial environments and handling protocols influence physiological status of captive freshwater stingrays. To this purpose, blood from five adult males and six adult females was collected to perform complete blood counts and blood chemistry analyses. All sampled animals showed good body condition with no differences between sexes. Differences between sexes were only found for the differential count of lymphocytes. Red blood results were consistent with previously studied potamotrygonids while white blood results showed higher values of leukocytes, thrombocytes, heterophils and lymphocytes in P. magdalenae compared to other Potamotrygonids. All types of leukocytes described for elasmobranchs were found except neutrophils and basophils. Blood metabolites showed an influence of ex situ diet in total protein, triglycerides and cholesterol. Glucose results were consistent while urea showed lower levels than those recorded for other freshwater stingrays. These results highlight the importance of physical, physiological and health analysis in freshwater stingrays as a part of welfare assessment to improve monitoring protocols and survival rates in public or private aquaria.
Cutaneous leishmaniasis–Awareness, knowledge and practices among general population in rural and urban areas in Malakand region, Pakistan
Authors: Khan W. , Khan I. , Ullah H. , Zain S. N. M. , Panhwar W. A. , Mehmood S. A. , Ahmed S. , Siyal G. B. , Ahmad M.S. , Shah M. , Rafique T. , Ali N. , Salim M. , Hussain A.
Published: March 2021

Abstract Malakand region is an endemic area for cutaneous leishmaniasis (CL). However, there are limited number of studies of this disease in Pakistan. Therefore, a study was conducted to understand the level of awareness attitude and practice among the residents of Makaland towards CL and the disease vectors. This study adopted a cross-sectional approach with a total of 400 respondents (n=93 rural and n= 307 urban). Overall, the population in Malakand region (61.2%) were well-informed in the role of sand fly in transmitting diseases, but most lack knowledge on the vector’s behavior and almost a quarter (24.5%) were unable to provide knowledge on proper control measures. Alarmingly, the practice and attitudes of the general population was not satisfactory as close to half (49.8%) of the population did adopt any control method. This study calls for increase in awareness through health education campaign to reduce the risk of cutaneous leishmaniasis outbreaks in the future.
Análise contextual da construção [à medida que] conect
Authors: Rosário Ivo Costa , Fernandes Thaís Pedretti Lofeudo Marinho
Published: March 2021

RESUMO Este artigo propõe-se a investigar a formação da construção [à medida que] conect , à luz da Linguística Funcional Centrada no Uso. O foco é o estudo de contextos (normal, atípico, crítico e isolado) e o processo de construcionalização, que compreende a formação de um novo nó na língua. A partir do Corpus do Português, realizamos uma pesquisa de cunho qualiquantitativo, com dados coletados do século XV ao XX. Os resultados demonstram que a construção [à medida que] conect formou-se e convencionalizou-se em língua portuguesa, com valor proporcional, em sincronias mais recentes, por meio do processo de domínio geral denominado chunking.
Problemas de escritura en la producción de textos de estudiantes de Derecho y Medicina
Authors: Meza Paulina , Castellón Melissa , Gladic Jadranka
Published: March 2021

RESUMEN El objetivo es identificar problemas de escritura comunes en textos profesionales con fines académicos producidos por estudiantes de Derecho y Medicina. El corpus estuvo compuesto por 123 textos, que fueron analizados a partir de la aplicación de dos rúbricas diseñadas para evaluar la calidad lingüístico-discursiva. Los resultados evidencian que, en ambas disciplinas, las dimensiones no logradas corresponden a elementos puramente lingüísticos. Por el contrario, todos los elementos asociados con el conocimiento de la disciplina se encuentran entre las dimensiones logradas. Estos resultados pueden ser útiles para la realización de intervenciones didácticas desde una alfabetización disciplinar.
Uncontrolled diabetes mellitus: a current understanding of the mechanisms underlying the disease that affect orthodontic tooth movement
Authors: SAMARTINI Daniela Gomides , RODRIGUES Manuela Ortega Marques , SANTOS Carina de Sousa
Published: March 2021

ABSTRACT With improvements in dental aesthetic requirements an increasing number of adults are seeking orthodontic treatment that, along with current lifestyle and eating habits of the adult population, makes orthodontists more likely to encounter patients with metabolic disorders such as diabetes mellitus. Speculated that the diabetic patient during orthodontic treatment may not experience a physiological healing process as a healthy patient. Therefore, the objective of this work is to present a current and contextualized review of the mechanisms by which uncontrolled diabetes mellitus impacts on bone remodeling and orthodontic tooth movement during the application of orthodontic forces. The following databases were searched MEDLINE (via PubMed), Scopus, Web of Science, SciELO, LILACS and open grey with these MeSH “bone remodeling”, “diabetes mellitus”, “orthodontic” and “tooth movement”. Five articles remained after search strategy and were analyzed. In sum, no clinical studies were found, the evidence was limited to animal studies (rats). The results suggest that there are differences in bone remodeling and tooth movement during the application of orthodontic forces in animals with diabetes mellitus when compared to healthy animals, especially when the disease is associated with periodontal disease. However, the results are still controversial and may be due to different study protocols.
Occlusions in peripherally inserted central venous catheters in pediatric patients in antineoplastic chemotherapy
Authors: Souza Bruna Irene Cunha Curty de , Silva Marcelle Miranda da
Published: March 2021

ABSTRACT Objective To analyze the occurrence of occlusions in peripherally inserted central venous catheters in pediatric patients in antineoplastic chemotherapy. Method Retrospective cohort, with 156 medical records of patients aged 0-19 years who underwent outpatient chemotherapy between 2013 and 2017 by this catheter, in a hospital in the city of Rio de Janeiro. Descriptive and inferential statistics were applied. Results 219 catheters were registered. Occlusion occurred in 141 (64.4%) catheters; 63 (44.7%) were removed because of occlusion, either alone or associated with another factor. Total occlusion alone led to the removal of 27 (12.3%) catheters. Occlusion was associated with: catheter dwell time, cyclophosphamide, neuroblastoma, bone metastasis and number of chemotherapy sessions. Conclusion Occlusion is an important complication because it occurred in more than half of the catheters and was one of the main reasons for withdrawal. The identified risk factors may guide the care to prevent this complication.
A JUDICIALIZAÇÃO DA INCLUSÃO: O GOVERNO PELA LEI
Authors: Thoma Adriana da Silva , Hillesheim Betina , Siqueira Carolina de Freitas Corrêa
Published: March 2021

RESUMO O artigo discute a judicialização da inclusão, compreendendo-a como ações desenvolvidas pelo Poder Judiciário voltadas à inclusão de grupos em situação de risco ou vulnerabilidade social. Para as análises, utiliza-se a noção de governamentalidade biopolítica, na perspectiva de Michel Foucault. Argumenta-se que, por meio do Poder Judiciário, o Estado regula os rumos da inclusão a partir de dois vieses que se articulam: o da fiscalização e da intervenção recomendatória e o da orientação, que toma a argumentação e o convencimento como formas de produzir modos de ser inclusivos.
Determination of the optimal number of evaluations in half-sib progenies of kale by Bayesian approach
Authors: Azevedo Alcinei M , Silva Derly José H da , Seus Rogério , Freitas Elis Marina de , Afonso Daniel F , Gomes Cristiane L , Aspiazú Ignácio
Published: March 2021

ABSTRACT Kale has a long vegetative cycle, requiring a lot of labor, due to the need for tutoring, thinning and multiple harvests, leading to difficulties in the maintenance and evaluation of experiments. Thus, the objective was to estimate the minimum number of evaluations for the assertive selection of half-sib progenies of kale by means of a repeatability study by Bayesian approach. Twenty four half-sib progenies were evaluated in a randomized block design with four replicates and five plants per plot. The number of shoots, number of marketable leaves, fresh mass of marketable leaves and fresh mass per leaf were measured throughout 15 harvests. All traits showed high estimates of the repeatability, indicating high regularity in the expression of the traits during the harvesting period. With eight harvests it is possible to evaluate all the traits with a coefficient of determination superior to 85% in half-sib progenies of kale.
Shelf life extension of peach palm heart packed in different plastic packages
Authors: Ribeiro Stéfanny Aparecida , Coneglian Regina Celi C , Silva Beatriz C da , Deco Thayane A de , Prudêncio Edlene R , Dias Anelise
Published: March 2021

ABSTRACT Peach palm heart (Bactris gasipaes) is a highly perishable product and, therefore, studies on extending its shelf life are quite necessary. Considering the high demand of this vegetable, this study aimed to evaluate the influence of using different plastic packages in order to extend the shelf life of the peach palm heart in natura. Stipes were collected from plants grown on family farms located in the municipality of Seropédica-RJ. Stipes were peeled, sanitized and packed at the Post-harvest Laboratory in Universidade Federal Rural do Rio de Janeiro (UFRRJ). In this experiment, the following treatments were applied: a control without package (C), unperforated polyethylene bag (UPB), perforated polyethylene bag (PPB), microperforated polyethylene bag (MPPB), and styrofoam tray + plastic film (STPF). The material was stored in a cold chamber under controlled temperature (5±2oC) for 24 days and then at room temperature (28±2oC) on the 25th day. Physical, chemical and visual evaluations were carried out for 25 days, with samples submitted to evaluations at 0 (initial characterization), 4, 8, 12, 16, 20, 24 and 25 days of storage. Microbiological evaluations were performed for 18 days, with samples submitted to evaluations at 0, 8, and 16 days of storage. The results indicate that using plastic package combined with refrigeration was efficient in extending the shelf life of in natura peach palm hearts, by reducing fresh mass loss, maintaining visual quality and reducing sample contamination. The PPB, UPB and MPPB packages showed good performance considering the shelf life extension of the packed vegetable. Thus, we recommend the acquisition of cheaper packages, so that smallholder farmers could obtain higher profitability.
Additive and non-additive genetic effects for fruit traits of ornamental pepper
Authors: Pessoa Angela Maria dos S , Rêgo Elizanilda R do , Rêgo Maílson M do
Published: March 2021

ABSTRACT Pepper plants can be used as ornamental ones due to the contrasting traits of plants, flowers, and especially fruits. This variability can be exploited in genetic improvement programs aiming at identifying superior genotypes and obtaining hybrids. This work aimed to select parental and hybrid individuals through diallel analysis for fruit traits in Capsicum annuum. Seven pepper genotypes were crossed, and eleven fruit-related quantitative traits were evaluated. The data were subjected to diallel analysis using Griffing’s Method 1 (fixed model). There was a predominance of additive genetic effects on the fruit traits of ornamental pepper plants. Genotypes UFPB77.3 and UFPB390 are indicated as parents for the improvement of ornamental pepper plants, for fruit traits. Hybrids UFPB77.3 x UFPB099, UFPB390 x UFPB77.3, UFPB390 x UFPB001, UFPB390 x UFPB099, UFPB134 x UFPB77.3, and UFPB134 x UFPB390 present a potential for the production of hybrids and generation of segregating populations of ornamental peppers.
Genetic dissimilarity, selection index and correlation estimation in a melon germplasm
Authors: Gomes Danilo A , Alves Igor M , Maciel Gabriel M , Siquieroli Ana Carolina S , Peixoto Joicy Vitória M , Pires Patrícia dos S , Medeiros Iago A de
Published: March 2021

ABSTRACT The success of breeding programs depends on genetic variability. Individuals selected based on a few traits may be a limitation. One alternative is the use of nonparametric indices. However, there is no information on the use of selection indices in melon germplasms. The present study aimed to estimate genetic dissimilarity in a melon germplasm and select potential parent plants for future breeding programs. The genetic material consisted of 37 melon accessions. The traits assessed were fruit diameter and length, diameter and length of the fruit cavity and total soluble solids. Genetic dissimilarity was assessed by multivariate analyses (UPGMA and Tocher). Selection gain estimates were analyzed by comparing the classic Smith-Hazel and sum of ranks indices. Genetic diversity was observed between accessions. The variable that contributed most to genetic dissimilarity was fruit cavity length. Simultaneous selection for the traits assessed based on the sum of ranks index is better suited to melon germplasm assessment. The best accessions for the five variables simultaneously were UFU07, UFU23, UFU09, UFU21, UFU28 and UFU30.
Nitrogen content, SPAD index and production of single head broccoli
Authors: Vidigal Sanzio M , Puiatti Mário , Lopes Iza Paula de C , Sediyama Maria Aparecida N
Published: March 2021

ABSTRACT In the management of single head broccoli nitrogen fertilization, there is no study indicating the critical level and adequate range of N content and SPAD index in the leaves to evaluate the nitrogen nutritional status. This work was carried out in two consecutive years with control without N and three rates of N (150; 300 and 450 kg ha-1). The treatments were arranged in the experimental design of random blocks, with four replications. All productive characteristics were significantly influenced by N rates. The fresh inflorescence mass reached a maximum value of 822 g with 308 kg ha-1 N. The critical levels were 61.1 g kg-1 for total N foliar content and 71.31 ud SPAD at 40 DAT. The SPAD index presented high correlations with the total N content in the leaves (r = 0.93; p<0.034) and with the maximum fresh mass of the inflorescence (r = 0.99; p<0.001). The ranges of N content (low ≤52.5; medium 52.6 to 57.4; sufficient 57.5 to 61.1 and high >61.1 g kg-1) and SPAD index (low ≤68.48; medium 68.49 to 70.47; sufficient 70.48 to 71.31 and high >71.31 ud SPAD) are proposed for assessing the N nutritional status of single head broccoli.
Productive and physiological responses of jambu (Acmella oleracea) under nutrient concentrations in nutrient solution
Authors: Sampaio Italo MG , Silva Júnior Mário L , Bittencourt Ricardo FPM , Santos Gabriel AM dos , Nunes Fiama KM , Costa Vivian CN
Published: March 2021

ABSTRACT In the last years, jambu has become popular and greatly appreciated, due to its remarkable taste. Thus, hydroponically cultivated jambu is promising, since it achieves better yield and production quality. The aim of this study was to evaluate the effect of ionic concentration in nutrient solution on growth, productivity and gas exchange of jambu. The experimental design was completely randomized, with five treatments and four replicates. The treatments consisted of variations of ionic concentration using the nutrient solution proposed by Hoagland & Arnon (25, 50, 75, 100 and 125%). The length of the main stem, stem diameter, number of inflorescence, leaf area, fresh and dry biomass (shoot, root and inflorescence), photosynthesis, stomatal conductance, transpiration, internal CO2 concentration, Ci/Ca ratio and instant carboxylation efficiency were evaluated. Ionic concentrations significantly affected the studied variables, except the stem diameter, the internal CO2 concentration and the Ci/Ca ratio. The number of inflorescences and the leaf area grew linearly with maximum values (37.8 units plant-1 and 1650.8 cm2 plant-1, respectively) obtained in ionic concentration of 125%. Maximum responses were observed for shoot fresh and dry mass (63.9 and 6.9 g plant-1), root fresh and dry mass (16.7 and 2.0 g plant-1) inflorescence fresh and dry mass (11.0 and 1.8 g plant-1), respectively, at ionic concentration of 125%. Liquid photosynthesis, stomatal conductance, transpiration and instant carboxylation efficiency achieved maximum responses of 17.9 µmol CO2 m-2 s-1, 0.3 mol H2O m-2 s-1, 6.3 mmol m-2 s-1 and 0.06 with estimated concentrations of 84, 70, 80 and 83% of ionic strength, respectively. Thus, we concluded that the ionic concentration of 125% is indicated to obtain a greater biomass accumulation.
Saline irrigation water indices affect morphophysiological characteristics of collard
Authors: Viana Jonathan dos S , Palaretti Luiz Fabiano , Sousa Vinicius M de , Barbosa José de A , Bertino Antonio Michael P , Faria Rogério T de , Dalri Alexandre B
Published: March 2021

ABSTRACT Collard is a vegetable widely consumed in Brazil. However, the quality and production of this vegetable depend on the supply and quality of water. Water stress and saline stress can make it impossible to grow. The objective of this study was to evaluate the performance of morphophysiological characteristics of collard cv. Georgia under irrigation levels and saline indices after the first defoliation.The experiment was conducted in a greenhouse, under random blocks design, and the treatments consisted of combinations of five water electrical conductivities (CEi in dS m-1: C1 =0.80; C2 =1.30; C3 = 1.80; C4 = 2.30; C5 = 2.80) and four irrigation levels based on the vase capacity (PwC: L1 = 55%; L2 = 70%; L3 = 85%; L4 = 100%), with four replications. Plant height, stem diameter and number of leaves were directly affected by combinations of high salinity levels in irrigation water. On the other hand, the green color index had a higher negative effect caused by the treatments in the first evaluation. For fresh and dry matter weight, and leaf area, T16 treatment (Conductivity 2,30 dSm-1 + irrigation level 100% vase water capacity) presented the best result (206.67 g; 25.46 g; 3044 cm2, respectively), while for water use efficiency, T3 treatment (Conductivity 0,80 dSm-1 + irrigation level 85% vase water capacity) (22.95 g L-1) gave better results. The water electrical conductivities linked to irrigation levels had a direct effect on the morphophysiological characteristics of collard.
Cover crops in the production of green and sweet corn
Authors: Silveira Bruna de S , Torres José Luiz R , Orioli Júnior Valdeci , Favaro João Henrique de S , Costa Luciene L , Charlo Hamilton César de O
Published: March 2021

ABSTRACT Intensive conventional tillage cultivation of both green and sweet corn can contribute to soil degradation when compared to no-till systems. This study aimed to assess the agronomic characteristics and physicochemical quality of green and sweet corn grains grown under succession planting using different cover crops. Two experiments were conducted, one with green corn and the other sweet corn, using a randomized block design consisting of seven treatments: brachiaria (B); Pearl millet (PM); showy crotalaria (SC); SC+B; PM+B; PM+SC and PM+SC+B, with four repetitions. The fresh (FW) and dry weight (DW) of the cover crops and decomposition of their residue were assessed, in addition to the agronomic performance and bromatological quality of green and sweet corn grains. Brachiaria showed the lowest FW and DW production, highest residue decomposition rate and shortest half-life when compared to the other soil covers assessed. Productivity and yield for sweet corn grains and green corn ears were not statistically affected by the different cover crop residues. The cover crop residues influenced moisture content, total titratable acidity and total soluble solids in green corn, and lipids, proteins, total soluble solids, pH and ascorbic acid in sweet corn.
Selection of tomato genotypes for drought tolerance and agronomic potential through different selection indexes
Authors: Oliveira Camila S de , Maciel Gabriel M , Fraga Júnior Eusímio F , Peixoto Joicy Vitória M , Assunção Vitor B , Marques Douglas José
Published: March 2021

ABSTRACT The selection of genotypes with agronomic potential associated with drought tolerance is considered of high complexity. An alternative could be the use of selection indexes that can evaluate multiple characteristics simultaneously. This study aimed to select tomato genotypes with agronomic potential and drought tolerance by selection indexes. The experiment was conducted in a randomized block design with three replications. Ten treatments were evaluated: seven genotypes F2RC3, donor genitor (Solanum pennellii), recurrent genitor (UFU-040), and cv. Santa Clara. The irrigation was suspended until the substrate reached a matric potential of ≤-25 kPa for water stress simulation during the tomato cycle at 45, 60, 80 and 100 days after sowing. The control treatment (donor genitor) and cv. Santa Clara, were resistant and susceptible to water deficit, respectively. The UFU-102-RC3#91335 genotype presented agronomic potential and satisfactory tolerance level to water deficit and presented 58.2% higher production than the recurrent genitor (UFU-040). The genotype-ideotype distance selection index was the most appropriate for the selection of tomato genotypes for agronomic potential allied to drought tolerance.
Yield and quality of curly kale grown using organic fertilizers
Authors: Verruma-Bernardi Marta R , Pimenta Daniella M , Levrero Gabriel RR , Forti Victor A , Medeiros Simone DS de , Ceccato-Antonini Sandra Regina , Covre Elizabete A , Ferreira Marcos D , Moret Raissa , Bernardi Alberto CC , Sala Fernando C
Published: March 2021

ABSTRACT Kale is a vegetable that has high nutrition content, and balanced fertilization is essential to ensure high yield and quality of agricultural products. Curly kale, less known than regular leaf kale, is a new possibility for consumption. However, little is known about the influence of the type of fertilization on nutritional characteristics. This study aims to evaluate the influence of using organic fertilizers on the productivity, microbiological, and physico-chemical characteristics of Darkibor hybrid curly kale. The treatments consisted of three sources of organic fertilizers, one of organomineral fertilizer, and the control (without fertilization). The highest productivity was observed for kale that was treated with fertilizer in the organomineral composition in all harvests. For microbiological analyses, there was no contamination in all treatments, following legislation. There was no significant difference between treatments for the physicochemical composition, highlighting the high levels of phenolic compounds and proteins in curly kale. There was no difference between treatments regarding the mineral content of the leaves. Organic and organomineral fertilizers made it possible to produce curly kale with adequate physicochemical composition, free from microbiological contamination and heavy metals.
Evidências de poder expressas em projetos arquitetônicos do Hospital Santa Catarina (1974-2002)
Authors: Draganov Patrícia , Sanna Maria Cristina
Published: March 2021

Resumo A arquitetura hospitalar é um elemento disciplinador que contribui para a categorização, a classificação e a individualização dos atores sociais que compartilham esse espaço. Este estudo histórico analisou a trajetória da autoria dos projetos e do fluxo de pessoas, coisas e informação, além da disposição, da denominação e das dimensões dos compartimentos do Hospital Santa Catarina. Os achados foram interpretados à luz da literatura científica encontrada sobre o tema e do referencial teórico de Michel Foucault, o que permitiu compreender como se deram as disputas de poder por esses atores sociais. A enfermagem, um dos grupos presentes nesse espaço ao longo de todo o período estudado, ora ampliou ora teve reduzido o domínio sobre ele, pois ora a enfermagem foi destinada a esse espaço privativamente, ora foi deslocada para áreas onde a vigilância e a observação eram mais difíceis, ora passou a compartilhar espaços antes exclusivos. Essa dinâmica de disputa de poder impactou a qualidade da assistência prestada e as condições de trabalho dos profissionais de saúde.
Análise institucional da vigilância em saúde em um município da região metropolitana de Porto Alegre/RS
Authors: Silva Claudia Maria Scheffel Corrêa da , Junges Jose Roque , L’Abbate Solange , Moehlecke Vilene
Published: March 2021

Resumo O artigo tem por objetivo identificar e analisar a institucionalização das ações de vigilância em saúde em um município da região metropolitana de Porto Alegre/RS visando perceber suas dimensões instituídas e instituintes, bem como caracterizar as lógicas de atuação dessa vigilância. O referencial teórico-metodológico utilizado foi a análise institucional, na vertente socioanalítica. A pesquisa foi realizada em dois momentos, usando como ferramentas de coleta de informações a observação participante, as reuniões de grupo com o coletivo dos trabalhadores e o diário da primeira autora. Apareceram como resultados a institucionalização da vigilância - em decorrência do analisador “identificação de toda vigilância com a vigilância sanitária” -, a relevância do trabalho em rede - a partir de situações pontuais - e a fragilidade da vigilância da saúde do trabalhador, tendo presente o analisador da invisibilidade dessa vigilância no sistema. Foram observadas ações educativas - especialmente na vigilância sanitária -, processos instituintes e parcerias entre a vigilância em saúde e a atenção básica e entre as diferentes vigilâncias. Por fim, percebeu-se que nas ações intersetoriais é importante ter presentes as diferenças culturais, históricas e funcionais dos diferentes setores envolvidos.
Grounded theory research on the factors that lead to doctor moral hazard
Authors: Wang Yaohui , Dong Jiankun , Wang Xifeng , Liu Quanlong , Li Xinchun
Published: March 2021

Abstract Moral hazard clearly exists among doctors, and it has a dramatic impact on doctor-patient relationships, medical costs and medical risks. This study explored the factors that lead to doctor moral hazard, as well as the interrelationships and internal regularity of these factors. This study takes doctor moral hazard as the research content and the inducing factors as the core theme, conducting grounded theory research on the causes of doctor moral hazard. Scientific understanding of doctor behavior would facilitate the prevention and control of doctor moral hazard behavior. This study used the principles and methodology of Glaser and Strauss’s grounded theory. Theoretical and snowball samplings were used to identify 24 subjects. Semi-structured in-depth interviews were conducted with each subject. Themes were identified through substantial (open) coding and theoretical coding. The factors that lead to doctor moral hazard were categorized into five dimensions, i.e. motivation, opportunity, self-rationalization, exposure and punishment. These five factors influence each other, forming the inducing mechanism of doctor moral hazard. This will provide useful theoretical support and method guidance for the follow-up prevention and control of moral hazard for doctors.
Dos aldeamentos ao horto botânico: a apropriação de plantas de uso indígena na capitania de Guayases, 1772-1806
Authors: Dias Thiago Cancelier , Moraes Cristina de Cássia
Published: March 2021

Resumo O artigo pretende contribuir com a história das ciências, a história indígena e a história da América portuguesa. Parte-se dos pressupostos metodológicos de Dominique Pestre e da historiografia sobre a América portuguesa para interrogar a existência de uma rede de aldeamentos indígenas, a atuação de funcionários com saberes naturalistas, o envio de espécies botânicas para análise em Portugal e, por fim, a fundação de um horto botânico na capitania de Guayases (Goiás) entre 1772 e 1806. Apresenta-se a contribuição indígena na construção dos conhecimentos da história natural e discutem-se as influências de concepções da Ilustração na reforma do sistema colonial português na capitania a partir de documentação administrativa portuguesa, cartas e do estudo da aplicação de leis e instruções.
Women made visible: a different perspective on the history of the Institute of Tropical Medicine in Portugal, 1943-1966
Authors: Monteiro João Lourenço
Published: March 2021

Abstract This work focuses on the scientific research conducted by women at Portugal’s Institute of Tropical Medicine between 1943 and 1966. The Institute’s scientific journal documents the participation of women in tropical medicine during this period. Their publications addressed a variety of subjects and resulted from research carried out in the metropolis as well as Portugal’s overseas colonies. Most of the articles written by these women were are co-authored by their male colleagues, reflecting the incorporation of female researchers into scientific networks already established by men. This work in progress provides a starting point to lend visibility to a group of scientific actors who are practically absent from the historiography of tropical medicine.
La pandemia: ¿el acto final de Donald Trump?
Authors: Carter Eric
Published: March 2021

Resumen Se examina la gestión de Donald Trump, presidente de los EEUU, en la pandemia de covid-19.
Experimental and theoretical evidence for the load sequence effect in the compressive fatigue behavior of concrete
Authors: Baktheer Abedulgader , Chudoba Rostislav
Published: March 2021

A realistic prediction of the concrete fatigue life exposed to high-cycle loading scenarios with variable amplitudes is of utmost importance for a reliable and economically efficient design of civil engineering infrastructure for transport and energy supply. Current design codes estimate the fatigue life under variable amplitudes using the Palmgren–Miner rule, which assumes a linear scaling between lifetimes measured for uniform cyclic loading scenarios. Several experimental series conducted in the past, however, indicate that this assumption is not valid and that it may lead to unsafe design. In this paper, an experimental and theoretical investigations of the fatigue loading sequence effect in normal- and high-strength concrete behavior are presented, which confirm this observation. In particular, a test campaign with 135 cylinder specimens, including three concrete grades and six different loading scenarios has been conducted. Several response characteristics of the fatigue behavior including Wöhler curves, fatigue creep curves and evolving shapes of hysteretic loops have been evaluated. To substantiate the experimental results, a theoretical explanation of the observed sequence effect is formulated based on the assumption, that energy is dissipated uniformly within the volume of a test specimen during subcritical, compressive cyclic loading. Then, superposition of energy dissipation profiles along the lifetime measured for constant amplitudes becomes possible and a theoretical justification of the experimentally observed sequence effect can be provided. Moreover, a reverse sequence effect reported in the literature for bending fatigue of concrete can then be explained by an unevenly distributed energy dissipation over a cracked specimen. Supported by the theoretical consideration, the processed experimental data is used to validate existing fatigue life assessment rules by testing their ability to reflect the load sequence effect.
Investigation of the stress-strain state and microstructure transformation of copper busbars in the deformation zone during continuous extrusion
Authors: Koshmin A. N. , Zinoviev A. V. , Chasnikov A. Ya. , Grachev G. N.
Published: March 2021

The paper describes an extensive study of features peculiar to physical and mechanical processes occurring in metal in the deformation zone during the continuous extrusion of Cu-ETP rectangular busbars 10×60 mm in size. Finite element computer simulation was used to obtain the values of extrusion power parameters. It was noted that moment and force values increase to the point of filling the press chamber free space with metal reaching a maximum of 12.26 kN·m and 1.54 MN, respectively. The stress-strain state analysis of metal in the deformation zone made it possible to obtain distribution fields of accumulated plastic strain, strain rate intensity and average stresses, and to build the graph of metal temperature variation over time during extrusion. Maximum levels of accumulated plastic strain and compressive stresses are observed in the contact zone of the workpiece with the press container abutment. The most intense metal deformation heating also occurs there. The comparison of modeling and microstructural study results indicate that a significant portion of the cast structure grinding work occurs at the entrance to the deformation zone and at the abutment zone subjected to the highest level of compression stresses. Metal deformation during the die passage leads to an oriented crystal structure formed with a grain size of 25–30 μm. Sample hardness measurement results are consistent with the results of structure analysis in the studied areas of the deformation zone. When the workpiece passes through the compression container abutment section, deformation heating occurs, which leads to a decrease in hardness from 93 to 67 HV. After the metal passes through the die, recrystallization processes continue in it leading to a slight increase in grain size and, accordingly, a decrease in hardness from 79 to 74 HV, which continues until the busbar contacts a cooling medium.
In memory of Evgeny Nikolaevich Selivanov
Authors: Editorial Article
Published: March 2021

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The effect of titanium-carbon mixture mechanical activation on SHS pressing parameters and consolidated titanium carbide microstructure
Authors: Bogatov Yu. V. , Shcherbakov V. A. , Kovalev I. D.
Published: March 2021

The paper studies the effect of mechanical activation (MA) modes when stirring a stoichiometric mixture of titanium and soot powders in a ball mill on the properties of mixtures, combustion parameters, relative density, and the microstructure of consolidated titanium carbide samples obtained by SHS. MA conditions for Ti + C reaction mixtures in a ball mill were determined. An increase in the mass of grinding bodies activates the MA mechanism. It was shown that the greatest effect from MA was obtained with a two-stage preparation of mixtures: firstly, the titanium powder was activated separately, then the components were mixed together, and this process included not only their mixing, but also soot powder activation. It was found that combustion behavior is affected by the activation of not only titanium, but also soot. After MA of both components, an anomalous increase in the burning rate (more than 100 cm/s) was found on pressed samples. At the bulk density, there was no effect of MA on the mixture combustion process, since in this case the burning rate of all mixtures was in the range of 1.5–2.5 cm/s. It was revealed that MA of reagents for pressed samples leads to an increase in the combustion temperature, an increase in the relative density of the consolidated refractory product to 93–95 %, and a decrease in the average size of TiC grains. A decrease in the residual porosity of consolidated TiC is due to an increase in the hot pressing temperature and plasticity of the product synthesized during the reaction mixture combustion after MA. The main reason is an increase in the exothermic interaction rate. It was shown that MA when mixing reagents makes it possible to control combustion parameters, the microstructure of consolidated products and opens up new opportunities for obtaining refractory materials featuring a unique structure and properties by SHS pressing.
EVASÃO E A PERMANÊNCIA SOB A ÓTICA DISCENTE: O QUE OS ALUNOS APONTAM COMO FATORES INFLUENTES NA DESISTÊNCIA E NA CONCLUSÃO DO CURSO DE PEDAGOGIA NA MODALIDADE EAD
Authors: Figueiredo Nascimento Camila , Esteves dos Santos Maria Emanuela
Published: March 2021

Este artigo busca demonstrar os fatores influentes na evasão e na permanência de alunos do Curso de Licenciatura em Pedagogia, na modalidade de Educação a Distância (EaD), da Universidade Federal de São João Del-Rei (UFSJ). Os dados são apresentados com base em pesquisa de campo desenvolvida a partir da aplicação de questionário, com questões objetivas e dissertativas, o qual foi submetido aos alunos evadidos e concluintes do curso. Ao todo, participaram 50 alunos, sendo 17 evadidos e 33 concluintes. Os dados coletados foram analisados sob a perspectiva quantitativa e qualitativa, centrando a atenção na expressão e opinião discente. O resultado da análise concluiu que os fatores endógenos ao aluno (falta de recursos financeiros; falta de tempo para dedicar ao curso; problemas de saúde, pessoais e familiares; desinteresse pelo curso; motivação pessoal; autonomia, organização e planejamento) foram apontados pelos próprios discentes como os principais fatores influentes na evasão e na permanência no Curso de Licenciatura em Pedagogia EaD da UFSJ. O acesso a esses dados destacou a pertinência de políticas e ações de assistência estudantil para manutenção dos alunos nos cursos superiores na modalidade a distância, bem como a necessidade de melhorias pedagógicas e metodológicas dos cursos ofertados.