Universidade Federal de Mato Grosso (UFMT)
Recent publications
The field capacity of Oxisol was evaluated using the flux density in the field, Arya-Paris model, and Richards pressure chamber with non-deformed samples, and the water retention curve and soil moisture were determined using the Arya-Paris model at a pressure of 10 kPa. The research was conducted at the Federal University of Rondonópolis, Mato Grosso state, Brazil. The soil evaluated was Oxisol at depths of 0-10 and 10-20 cm. Using the flux density method, at a water flux density q = 0.10 mm per day and 1.0 mm per day, soil moisture values at field capacity were 0.30 and 0.32 m³ m⁻³, respectively, at a depth of 0-10 cm and 0.28 and 0.31 m³ m⁻³, respectively, at a depth of 10-20 cm. Comparing the results obtained with the pressure chamber with those of the field capacity obtained for q = 0.1 mm per day, the mean absolute error and bias were 0.880 and -0.218, respectively, for the 0-10 cm depth and 2.57 and -2.57, respectively, for the 10-20 cm depth. Field capacity of Oxisol can be obtained by subjecting undeformed 50 cm³ samples to a pressure of 10 kPa. The Arya-Paris model is an alternative for determining the soil water retention curve and the field capacity of Oxisol. Key words: internal drainage; soil-water characteristic curve; water redistribution
Six new species of Parmotrema (P. aristidesii, P. hypoflavum, P. marjorieanum, P. marlitonii, P. nelihondae, and P. subcristiferum) and P. cristiferum, all containing salazinic acid, were collected from the Amazon rainforest in Mato Grosso State, Brazil, (Central South America), and are described, illustrated, and commented by using the ultimate version of the GEL (Lichenological Studies Group) descriptive protocol, that has explained its most important recent improvements. Keywords: axillary folds; Cristalino; lichen systematics; satin; Xingu
Resumo Introdução: Pouco se conhece sobre os nascimentos de filhos de estrangeiras no Brasil. Objetivo: Analisar os nascidos vivos de mulheres estrangeiras residentes em Mato Grosso entre 2007-2016 e comparar com os nascidos de mães brasileiras. Método: estudo transversal com análise dos registros de nascimento do Sistema de Informação sobre Nascidos Vivos entre 2007-2016. Foi avaliada a tendência de nascimentos de filhos de estrangeiras e sua distribuição por regiões de saúde. Para análise das diferenças entre as características do pré-natal e nascimento dos filhos das três principais nacionalidades e brasileiras considerou-se o período 2011-2016, sendo adotado teste χ2 e regressão de Poisson. Resultados: Ocorreram 1.123 nascimentos de filhos de estrangeiros em Mato Grosso entre 2007-2016, com tendência crescente no período e mais elevada nas regiões fronteiriças. Foram analisados 942 nascimentos de filhos de estrangeiras: 437 (46,4%) de bolivianas; 263 (27,9%) de paraguaia e (242; 25,7%) de haitiana. Observou-se entre as estrangeiras maior proporção que iniciaram tardiamente o pré-natal e que realizaram <6 consultas. Nacionalidades paraguaia e boliviana associaram-se inversamente ao baixo peso ao nascer, porém, a haitiana foi positivamente associada. Conclusão: Observou-se o aumento de nascimentos de filhos de estrangeiras, sendo maior a prevalência de baixo peso entre filhos de haitianas.
This study aimed to estimate CO2 emission and uptake due to the mixed rendering mortars carbonation process, replacing natural aggregate (NA) with recycled aggregate (RA) and lime contents to produce less emissive final material. Mortars were subjected to natural carbonation in three environments. Carbonation depth was evaluated until 119 days of CO2 environmental exposure, and thermogravimetric analysis determined absorbed carbon content. The scenario evaluation considered different depths for the potential CO2 uptake. It was found that the higher the lime content, the higher the carbon emissions and capture. However, the CO2 captured amount (25.41 KgCO2/m³) does not balance its emission from raw materials production. Replacing NA for RA, the mortars reduced emissions associated with production by approximately 8.15%. The scenario simulation proved that constructive control is essential for rendering mortar depths less than 20 mm, the maximum carbon fixation is reached before rendering. Mortars with recycled aggregate are less emissive, which is essential in selecting more sustainable building materials.
Thermal resilience refers to a building’s capacity to adapt to extreme thermal variations, maintaining a healthy environment for its occupants. This study aims to assess the thermal resilience of a naturally ventilated low-income residential building in overheating conditions within a region of savannah tropical climate. Various indices, including adaptive thermal comfort, Indoor Overheating Degree (IOD) and Exceedance Hours (HE), Heat Index (HI), and Standard Effective Temperature (SET) were calculated in current and climate change scenarios using two models, a standard building (HISp) and a building that incorporates passive bioclimatic strategies (HISe).It was demonstrated that thermal insulation and low absorption strategies significantly contribute to indoor environmental quality, reducing the risk of overheating exposure in all evaluated scenarios. Despite reducing discomfort hours and critical thermal stress levels, the idealized strategies do not provide adequate habitability conditions for the occupants. Overheating will become even more severe in projected future scenarios. Among the two dwellings, HISe demonstrates a superior potential to mitigate the risk of overheating compared to HISp in all the scenarios evaluated.
Background: Surgical clipping and endovascular coiling are well-established treatments for acutely ruptured intracranial aneurysms leading to acute subarachnoid hemorrhage (aSAH). However, these modalities have limitations, particularly in cases involving wide-necked, bifurcating, or dissecting aneurysms. Flow diverter (FD) devices, initially used for unruptured aneurysms, have emerged as an alternative treatment for ruptured aneurysms despite concerns about hemorrhagic complications. Aims: This study aimed to perform a comprehensive systematic review and meta-analysis to assess the efficacy and safety of parental artery FD devices in treating ruptured intracranial aneurysms. Methods: A systematic search was conducted in Medline, Embase, and Cochrane databases from inception to July 2024. The inclusion criteria focused on studies involving patients with acutely ruptured aneurysms treated with parental artery FDs, with or without adjunctive coiling. Studies were required to report clear, stratified data specific to the population of interest, and include more than five patients. Exclusion criteria included studies on non-ruptured aneurysms, intrasacular flow diversion devices, or previously clipped aneurysms treated with FD. Data extraction was performed independently by two authors, and statistical analysis included single proportion analysis with 95% confidence intervals under a random-effects model, using R Studio. The primary outcome was the rate of aneurysm occlusion at follow-up. Summary of Review: Sixty studies encompassing 1300 patients were included. The primary outcome analysis revealed a 90% (95% CI: 87% - 92%; I2= 51%) rate of total occlusion at follow-up. Subgroup analysis indicated an occlusion rate of 89% for anterior circulation aneurysms and 96% for posterior circulation aneurysms. Intraoperative complications occurred in 6% of cases, while postoperative complications were observed in 13%. Rebleeding rates were low at 1%, with a 2% need for retreatment. Good functional outcomes (mRS ≤ 2) were achieved in 82% of patients, and the overall mortality rate was 4%. Conclusions: FD devices demonstrated high rates of aneurysm occlusion and favorable functional outcomes in patients with acutely ruptured intracranial aneurysms. However, the low mortality rate and favorable outcomes observed may reflect selection bias toward patients with less severe SAH. Despite a modest complication rate, the overall safety and efficacy of FD devices suggest they may be a viable alternative to traditional treatments for specific aneurysm types. Further studies, including a broader spectrum of SAH severities, are warranted to optimize their use in clinical practice.
The twig epiphyte orchid genus Rodriguezia has never been the subject of a full taxonomic revision, but it was previously hypothesized as non-monophyletic based on the distinct morphology and ITS sequences of R. decora, a Brazilian species. Here we tested this hypothesis by including in the sampling not only R. decora, but also R. rigida, another Brazilian species with similar vegetative and floral morphology to R. decora. Our analysis included both nuclear ribosomal internal transcribed spacer (ITS) and two plastid regions (matK and trnL-F). We found R. decora and R. rigida to be sister species, and this clade is sister to the rest of Rodriguezia. Based on the morphological distinctiveness of these two species compared to the rest of genus, we propose here the first infrageneric classification for Rodriguezia, accepting two subgenera. This study also provides, for the first time, strong support for the phylogenetic position of Trizeuxis as sister to Rodriguezia.
In this paper, a massive scalar field non-minimally coupled with gravity is considered. Assuming a regular and spherically symmetric background, specifically a regular black hole solution, the energy-momentum tensor is calculated. Using the thermofield dynamics formalism and its topological structure, the corresponding Stefan–Boltzmann law and Casimir effect are investigated. The results for the regular Bardeen and Hayward black holes are compared with those obtained for the Schwarzschild black hole.
This paper analyzes a pair of letters from filmmaker Julio Bressane that were published in the programs of the Museum of Modern Art of Rio de Janeiro’s Cinematheque between November 1970 and January 1971, as part of the film exhibition Novos rumos do cinema brasileiro [New Directions of Brazilian Cinema]. In them, the director takes a position against Cinema Novo, criticizing the process of industrialization that the group embraced. He also defends Belair, an underground production company that he created in partnership with Rogério Sganzerla and Helena Ignez, and lists some influences of the period, ranging from the artistical inspiration of Oswald de Andrade to the political militancy of Leon Trotski. This article is based on the assumption that these texts, written by Bressane when he was already living in London, accurately document the intentions that guided the emergence and closure of Belair. Keywords Julio Bressane; Belair; Experimental Cinema; Counterculture; Novos rumos do cinema brasileiro
The objective was to evaluate the intake, digestibility, and feeding behavior of sheep receiving diets based on marandu grass silage (MGS) with different levels of dehydrated brewery residue (DBR) inclusion and different types of concentrates. Sixteen sheep (30 ± 1.46 kg and 12 months old) were distributed in a randomized block experimental design. The treatments were: MGS containing 10% DBR + concentrate (100% corn); MGS containing 10% DBR + concentrate (50% corn and 50% rice bran); MGS containing 30% DBR + concentrate (100% corn); MGS containing 30% DBR + concentrate (50% corn and 50% rice bran), with 4 replicates per treatment. The experimental period lasted 21 days. Regardless of the concentrate used, diets containing MGS + 30% DBR provided the animals with higher intakes and digestibility of dry matter (DM) and nutrients, water intake, and urinary pH (p < 0.05). Longer feeding and rumination times and periods, and shorter idle times, feeding 1050 AIMS Agriculture and Food Volume 9, Issue 8, 1049-1063. efficiency of DM, feeding and rumination efficiency of neutral detergent fiber (NDF), and intakes of DM and NDF per meal were shown by sheep-fed diets containing MGS + 10% DBR (p < 0.05). The use of 100% corn concentrate also resulted in lower rumination efficiency of NDF and a higher number of mericic chews associated with MGS + 10% DBR (p < 0.05). Diets containing MGS + 30% DBR and concentrate (50% corn + 50% rice bran) resulted in shorter rumination and total chewing times (in min/kg/NDF) (p < 0.05). The use of MGS ensiled with 30% BR in sheep diets improves dry matter intake and nutrient digestibility.
A gray area remains about the intensity of efforts performed in Sevens competitions, especially during the worst-case scenarios (WCS-longest effort during a match). For this reason, the analysis of demands during the ball-in-play (BIP) is increasing in team sports like Rugby Sevens. Through this method, we can also identify the WCS and the demands of distinct phases of play (attack, defense, and transition). Thus, this study aimed to (i) investigate and compare the BIP and WCS external load (EL) demands (distance per minute, sprint distance per minute, and accelerations per minute) during matches; and (ii) compare the BIP running demands across different game phases (attack, defense, and transition). Twenty-one female professional Rugby Sevens players participated, with their running demands analyzed during every BIP phase in all 20 matches of the Super Sevens 2023 using individual GPS tracking. The results indicated no significant differences in any EL variables between WCS and BIP averages. Furthermore, there were no differences in EL experienced by athletes during different phases and actions. In summary, our findings suggest that both the WCS and the BIP methods result in similar EL values across matches. Additionally, the EL remains consistent across different game periods (first half vs. second half) and actions (defense, attack, and transition). These results offer practical guidance for coaches when planning training sessions for female Rugby Sevens athletes, suggesting that preparation focused on WCS may effectively prepare athletes for the entire game.
Chromoblastomycosis is a skin infection caused by melanized fungi that primarily affects rural workers. This study aimed to analyze the clinical and epidemiological manifestations of chromoblastomycosis in Brazil through an extensive literature review. A review of case reports or series of cases in English and Portuguese was conducted using the SciELO, LILACS, SCOPUS, PubMed, and Web of Science databases from 1963 to 2022. A total of 46 articles involving 450 patients were identified, among which, 83.1% were male rural workers with a mean age of 52.2 years. The clinical manifestations were most commonly observed in the lower extremities (78.7%). The most frequent clinical presentations of the disease were verrucous lesions and plaques. Fonsecaea and Rhinocladiella spp. were the most common agents responsible for chromoblastomycosis. Most cured cases were treated with itraconazole, either as monotherapy or in combination with other antifungals, surgery, or cryosurgery. Chromoblastomycosis affects hundreds of rural workers in Brazil, leading to financial disabilities as well as personal and family losses. It is essential to prioritize epidemiological surveillance and ensure the early diagnosis of this disease to reveal its true prevalence, guide resource allocation, improve diagnosis, ensure early treatment, and implement preventive measures. Keywords: Epidemiology; Fungal Infection; Case reports; Chromoblastomycosis; Chromomycosis
Introduction The demands and conditions of work can lead to development of a range of health conditions, including repetitive stress injuries and work-related musculoskeletal disorders. Objectives To assess the prevalence of musculoskeletal symptoms and the working conditions of primary school teachers working for the public municipal education system in Cuiabá, Mato Grosso, Brazil. Methods A cross-sectional study was conducted with teachers working for the public municipal education system in the capital of Mato Grosso state. The sample comprised 326 teachers. Data were collected using the Vocal Production Condition - Teacher instrument and the Nordic Musculoskeletal Questionnaire. Results The mean age of the sample was 43.01 years and teachers were predominantly female (87.12%), were married or in a stable relationship (62.70%), had postgraduate qualifications (73.93%), worked at one school only (58.95%), and stated that the pace of their working routine was sometimes stressful (59.01%), that they always took work home with them (57.45%), and that there was sometimes stress at work (54.92%), and reported presence of musculoskeletal symptoms during the last 12 months (76.74%). Conclusions The highest prevalence rates of musculoskeletal symptoms were observed among married women, those with postgraduate qualifications, those who worked at one school only, and those who had a stressful working routine. It was therefore concluded that mapping working conditions could provide a foundation for reducing the occurrence of musculoskeletal symptoms and improving the health of this population.
In this paper, we investigate a 4D solution of Einstein field equations, an extension of 2D Misner space in the context of Ricci-inverse (ℛℐ)-gravity theory. For that, we consider two different class, namely, Class-II model which is defined by the function f(ℛ,AμνAμν) and Class-III model defined by the function f(ℛ,𝒜,AμνAμν). Here, Aμν is the anti-curvature tensor with 𝒜 as its scalar, and ℛ is the Ricci scalar. Using this 4D metric as background, the modified field equations for Ricci-inverse gravity were derived and obtain the results. These derived field equations are then solvable by choosing the pure radiation field as the energy-momentum tensor, including a cosmological constant as does in the general relativity. This implies that the chosen 4D space-time is a valid solution in this novel gravity theory, and thereby violate the causality condition, analogous to general relativity.
Urbanization has reshaped the distribution of biodiversity on Earth, but we are only beginning to understand its effects on ecological communities. While urbanization may have homogenization effects strong enough to blur the large-scale patterns in interaction networks, urban community patterns may still be associated with climate gradients reflecting large-scale biogeographical processes. Using 103 hummingbird–plant mutualistic networks across continental Americas, including 176 hummingbird and 1,180 plant species, we asked how urbanization affects species interactions over large climate gradients. Urban networks were more generalized, exhibiting greater interaction overlap. Higher generalization was also associated with lower precipitation in both urban and natural areas, indicating that climate affects networks irrespective of habitat type. Urban habitats also showed lower hummingbird functional trait diversity and over/underrepresentation of specific clades. From the plant side, urban communities had a higher prevalence of nonnative nectar plants, which were more frequently visited by the hummingbird species occurring in both urban and natural areas. Therefore, urbanization affected hummingbird–plant interactions through both the composition of species and traits, as well as floral resource availability. Taken together, we show that urbanization consistently modifies ecological communities and their interactions, but climate still plays a role in affecting the structure of these novel communities over the scale of continents.
Aim We investigated the relationship between ecological attributes of the zooplankton community and its secondary production. Methods Samples were taken from lakes in the floodplain of the Upper Paraná River (Brazil), in low and high-water periods, and in a manipulative experiment realized in mesocosms. Results The highest amount of production was related to the dominance of few species. Secondary production of larger and long-lived organisms, such as copepods, had been most associated with the biomass, whereas smaller ones, such as rotifers, with the abundance. Conclusions These attributes of the zooplankton community (biomass and abundance) can be used as proxies to estimate the zooplankton secondary production in the floodplain, supporting the studies on monitoring and conservation of these ecosystems.
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Paulo Roberto Fonseca
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