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1.
Rev. Investig. Innov. Cienc. Salud ; 6(2): 1-4, jul.-dic. 2024.
Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1575794

RESUMO

Resumen La narrativa mitológica de Epimeteo y Prometeo, retratada por Platón, sirve de introducción a la importancia de la inteligencia artificial (IA). El hombre se caracteriza en este mito, frente al resto de criaturas, por tener un don divino: la capacidad de crear herramientas. La IA representa un avance revolucionario al sustituir la labor intelectual humana, destacando su capacidad para generar nuevo conocimiento de forma autónoma. En el ámbito científico, la IA agiliza la revisión por pares y mejora la eficiencia en la evaluación de manuscritos, además de aportar elementos creativos, como la reescritura, traducción o creación de ilustraciones. Sin embargo, su implementación debe ser ética, limitada a un asistente y bajo la supervisión experta para evitar errores y abusos. La IA, una herramienta divina en evolución, requiere que cada uno de sus avances se estudie y aplique críticamente.


Abstract The mythological story of Epimetheus and Prometheus, as told by Plato, serves as an introduction to the meaning of artificial intelligence (AI). In this myth, man, unlike other creatures, is endowed with a divine gift: the ability to create tools. AI represents a revolutionary advance, replacing human intellectual labour and emphasising its ability to autonomously generate new knowledge. In the scientific field, AI is speeding up peer review processes and increasing the efficiency of manuscript evaluation, while also contributing creative elements such as rewriting, translating or creating illustrations. However, its use must be ethical, limited to an assisting role, and subject to expert oversight to prevent errors and misuse. AI, an evolving divine tool, requires critical study and application of each of its advances.

2.
FEMS Microbiol Ecol ; 100(11)2024 Oct 25.
Artigo em Inglês | MEDLINE | ID: mdl-39363207

RESUMO

Conceptual biogeographic frameworks have proposed that the relative contribution of environmental and geographical factors on microbial distribution depends on several characteristics of the habitat (e.g. environmental heterogeneity, species diversity, and proportion of specialist/generalist taxa), all of them defining the degree of habitat specificity, but few experimental demonstrations exist. Here, we aimed to determine the effect of habitat specificity on bacterial biogeographic patterns and assembly processes in benthic coastal ecosystems of the Southern Ocean (Patagonia, Falkland/Malvinas, Kerguelen, South Georgia, and King George Islands), using 16S rRNA gene metabarcoding. The gradient of habitat specificity resulted from a 'natural experimental design' provided by the Abatus sea urchin model, from the sediment (least specific habitat) to the intestinal tissue (most specific habitat). The phylogenetic composition of the bacterial communities showed a clear differentiation by site, driven by a similar contribution of geographic and environmental distances. However, the strength of this biogeographic pattern decreased with increasing habitat specificity: sediment communities showed stronger geographic and environmental divergence compared to gut tissue. The proportion of stochastic and deterministic processes contributing to bacterial assembly varied according to the geographic scale and the habitat specificity level. For instance, an increased contribution of dispersal limitation was observed in gut tissue habitat. Our results underscore the importance of considering different habitats with contrasting levels of specificity to better understand bacterial biogeography and assembly processes over oceanographic scales.


Assuntos
Bactérias , Ecossistema , Filogenia , RNA Ribossômico 16S , RNA Ribossômico 16S/genética , Animais , Bactérias/genética , Bactérias/classificação , Oceanos e Mares , Sedimentos Geológicos/microbiologia , Água do Mar/microbiologia , Ouriços-do-Mar/microbiologia , Ouriços-do-Mar/genética
3.
Int J Nephrol Renovasc Dis ; 17: 215-225, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39381781

RESUMO

Purpose: In the kidneys, Systemic Lupus Erythematosus leads to Lupus Nephritis (LN), a form of glomerulonephritis. There is evidence that patients with LN may present activation of specific pathways for podocyte injury. This injury can occur through different mechanisms such as loss of podocyte adhesion to the glomerular basement membrane, cell death or dedifferentiation. Podocyturia with consequent podocytopenia has been described in some nephropathies such as LN, highlighting the importance of studying podocyte injuries in this condition. Evaluating in situ morphological characteristics of podocytes becomes relevant for a better understanding of the processes involved in their pathogenesis. This study investigated podocytes in different classes of LN in renal biopsies performed by the Kidney Research Center at the Federal University of Triângulo Mineiro. Patients and Methods: Twenty control cases and 29 biopsy cases diagnosed with LN were selected, divided according to the histopathological classes of the disease. Podocyte density was assessed through immunohistochemistry for Wilms tumor 1 protein and the evaluation of foot process effacement was performed by transmission electron microscopy. Results: Podocyte density was lower in the LN and this reduction was observed in all analyzed classes when compared to the control group. More foot process effacement was observed in the LN group, with more effacement in classes I/II and class IV compared to the control group. The class IV group showed more foot process effacement than the class III group and presented higher proteinuria levels compared to the classes I/II group. A strong, positive, and significant correlation was observed between the activity index and foot process effacement in the class IV group. Conclusion: Podocytes play an important role in the development of LN, and possibly, injuries to these cells are more closely related to the inflammatory/diffuse proliferative cellular process developed in class IV LN.

4.
Children (Basel) ; 11(8)2024 Jul 30.
Artigo em Inglês | MEDLINE | ID: mdl-39201860

RESUMO

BACKGROUND: Fear of fat is a relevant variable in initiating weight regulation behaviors in adolescents. However, little is known about the experiential and behavioral change processes that mediate the choice between healthy and unhealthy weight regulation behaviors in this population. METHOD: The general objective was to examine the predictive role of fear of fat on weight-related behaviors (healthy and unhealthy weight control behaviors) through the mediation of experiential and behavioral change processes (consciousness raising, counterconditioning, helping relationships, reinforcement management, self-liberation, self-reevaluation, stimulus control, substance use) in 838 adolescents aged 15-19 years from Mexico and Spain using parallel mediation analysis. Additionally, the study examined the correlations between the variables with regard to gender and country, as well as the differences in the use of processes of change across stages of change through the use of a multivariate analysis of variance. The Spanish version of the Fear of Fat, Stages of Change, Processes of Change, and Weight-Related Behaviors scales were used. RESULTS: The mediation analysis showed that fear of fat predicted healthy weight control behaviors through consciousness raising, self-liberation, and stimulus control. On the other hand, fear of fat predicted unhealthy weight control behaviors through counterconditioning, stimulus control, and the use of weight loss substances. Intervening to reduce fear of fat may be a way to modify the processes of change used by adolescents to regulate their weight. CONCLUSIONS: The results of this study indicate that adolescents may initiate weight control behaviors as a result of fear of fat. This process is mediated by experiential and behavioral processes that influence weight regulation.

5.
Sci Rep ; 14(1): 16667, 2024 Jul 19.
Artigo em Inglês | MEDLINE | ID: mdl-39030252

RESUMO

Monometallic and bimetallic Cu:Ni catalysts with different Cu:Ni molar ratios (3:1, 2:1, 1:1, 1:2, 1:3) were synthesized by wetness impregnation on activated carbon and characterized by TPR (temperature programmed reduction), XRD (X-ray diffraction) and XPS (X-ray photoelectron spectroscopy). The synthesized catalysts were evaluated in the gas phase production of diethyl carbonate from ethanol and carbon dioxide. The largest catalytic activity was obtained over the bimetallic catalyst with a Cu:Ni molar ratio of 3:1. Its improved activity was attributed to the formation of a Cu-Ni alloy on the surface of the catalyst, evidenced by XPS and in agreement with a previous assignment based on Vegard law and TPR analysis. During the reaction rate experiments, it observed the presence of a maximum of the reaction rate as a function of temperature, a tendency also reported for other carbon dioxide-alcohol reactions. It showed that the reaction rate-temperature data can be adjusted with a reversible rate equation. The initial rate as a function of reactant partial pressure data was satisfactorily adjusted using the forward power law rate equation and it was found that the reaction rate is first order in CO2 and second order in ethanol.

6.
Environ Sci Pollut Res Int ; 31(32): 44965-44982, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38954345

RESUMO

Sulfate radical-based advanced oxidation processes (SR-AOPs) are renowned for their exceptional capacity to degrade refractory organic pollutants due to their wide applicability, cost-effectiveness, and swift mineralization and oxidation rates. The primary sources of radicals in AOPs are persulfate (PS) and peroxymonosulfate (PMS) ions, sparking significant interest in their mechanistic and catalytic aspects. To develop a novel nanocatalyst for SR-AOPs, particularly for PMS activation, we synthesized carbon-coated FeCo nanoparticles (NPs) using solvothermal methods based on the polyol approach. Various synthesis conditions were investigated, and the NPs were thoroughly characterized regarding their structure, morphology, magnetic properties, and catalytic efficiency. The FeCo phase was primarily obtained at [OH-] / [Metal] = 26 and [Fe] / [Co] = 2 ratios. Moreover, as the [Fe]/[Co] ratio increased, the degree of xylose carbonization to form a carbon coating (hydrochar) on the NPs also increased. The NPs exhibited a spherical morphology with agglomerates of varying sizes. Vibrating-sample magnetometer analysis (VSM) indicated that a higher proportion of iron resulted in NPs with higher saturation magnetization (up to 167.8 emu g-1), attributed to a larger proportion of FeCo bcc phase in the nanocomposite. The best catalytic conditions for degrading 100 ppm Rhodamine B (RhB) included 0.05 g L-1 of NPs, 2 mM PMS, pH 7.0, and a 20-min reaction at 25 °C. Notably, singlet oxygen was the predominant specie formed in the experiments in the SR-AOP, followed by sulfate and hydroxyl radicals. The catalyst could be reused for up to five cycles, retaining over 98% RhB degradation, albeit with increased metal leaching. Even in the first use, dissolved Fe and Co concentrations were 0.8 ± 0.3 and 4.0 ± 0.5 mg L-1, respectively. The FeCo catalyst proved to be effective in dye degradation and offers the potential for further refinement to minimize Co2+ leaching.


Assuntos
Nanocompostos , Peróxidos , Nanocompostos/química , Peróxidos/química , Poluentes Químicos da Água/química , Catálise , Oxirredução , Ferro/química , Carbono/química
7.
Curr Res Microb Sci ; 7: 100244, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38974672

RESUMO

Pathogenic bacteria, introduced in water sources through faecal contamination, have traditionally been investigated as individual species, leading to the establishment of microbial, sanitary, and environmental quality indicators. Recent advancements in our understanding of the microbiome and its intricate interactions within the human-microbiome-environment network advocate for a broader evaluation of the impact of disinfection on the entire microbial community. In this study, we conducted a comprehensive screening experiment involving four disinfection processes; ozone, ultraviolet radiation with wavelengths between 200 - 280 nm (UV-C), photo-Fenton, and chlorination, applied to two distinct water sources; surface (SW) and groundwater (GW). The cells that remained viable after treatment were recovered using Brain Heart Infusion (BHI) broth, and 16S rRNA gene sequencing was used for their identification. Our findings confirmed the presence of faecal contamination in the water sources and revealed distinct effects of each treatment on the recovered bacterial populations. The chlorination of groundwater samples likely had a greater impact on bacteria in a vegetative state than on spores. Consequently, this led to a higher abundance in the BHI cultures of sporulating bacteria such as Bacillus (increasing from 0.36 to 93.62 %), while ozonation led to an elevated recovery of Pseudomonas (increasing from 45.2 to 69.9 %). Conversely, in surface water, calcium hypochlorite and ozone treatments favored the selection of Staphylococcus and Bacillus, whose relative abundance in the cultures increased from 0 to 39.22 % and from 0.35 to 96.6 %, respectively. In groundwater, Pseudomonas was resistant to UV-C radiation and their relative abundance increased from 45.2 % to 93.56 %, while photo-Fenton was effective against this bacterial group decreasing its relative abundance to 0.46 %. However, other genera such as Bacteroides, Aeromonas, and Citrobacter seemed to be less injured by this disinfection process. BHI broth was successful in recovering various bacterial groups that exhibited resistance to sublethal water disinfection.

8.
Materials (Basel) ; 17(13)2024 Jul 02.
Artigo em Inglês | MEDLINE | ID: mdl-38998334

RESUMO

The automotive industry is entering a digital revolution, driven by the need to develop new products in less time that are high-quality and environmentally friendly. A proper manufacturing process influences the performance of the door grommet during its lifetime. In this work, uniaxial tensile tests based on molecular dynamics simulations have been performed on an ethylene-propylene-diene monomer (EPDM) material to investigate the effect of the crosslink density and its variation with temperature. The Mooney-Rivlin (MR) model is used to fit the results of molecular dynamics (MD) simulations in this paper and an exponential-type model is proposed to calculate the parameters C1(T) and C2T. The experimental results, confirmed by hardness tests of the cured part according to ASTM 1415-88, show that the free volume fraction and the crosslink density have a significant effect on the stiffness of the EPDM material in a deformed state. The results of molecular dynamics superposition on the MR model agree reasonably well with the macroscopically observed mechanical behavior and tensile stress of the EPDM at the molecular level. This work allows the accurate characterization of the stress-strain behavior of rubber-like materials subjected to deformation and can provide valuable information for their widespread application in the injection molding industry.

9.
Sports (Basel) ; 12(7)2024 Jun 26.
Artigo em Inglês | MEDLINE | ID: mdl-39058071

RESUMO

BACKGROUND: Executive function is often altered in overweight/obese children and adolescents, which has a negative impact on their learning and daily life. Furthermore, research has shown the benefits of physical exercise in improving cognitive performance. This protocol aims to define in a detailed and structured manner the procedures that will be conducted for the development of a systematic review of the literature aimed at evaluating the effects of physical exercise on the executive functions of children and adolescents (≤18 years) with overweight/obesity in comparison with peers in control groups. METHODS: The Web of Science, PubMed, Scopus, and EBSCO databases will be searched for longitudinal studies that have at least one experimental and one control group using pre- and post-intervention measures of executive function, including working memory, inhibition, and cognitive flexibility in the pediatric population who are overweight or obese. The risk of bias and certainty of evidence will be assessed using Cochrane RoB2 and GRADE, respectively. Furthermore, Der Simonian-Laird's random effects model will be employed for meta-analyses. The effect sizes will be calculated with 95% confidence intervals, and p values < 0.05 indicate statistical significance for each dimension of executive function in the different groups before and after the intervention. DISCUSSION: The results of this review may be useful for education and health professionals to design treatment plans for overweight/obese children and adolescents, offering potential benefits related to the learning and cognitive abilities of this population. PROSPERO registration number: CRD42023391420.

10.
Environ Sci Pollut Res Int ; 31(36): 49413-49426, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-39075183

RESUMO

The evaluation of the photocatalytic properties of electrospun TiO2 nanofibres (TiO2-NFs) synthesised in the same experimental conditions using two distinct precursors, tetraisopropyl orthotitanate (TTIP) and tetrabutyl orthotitanate (TNBT), with morphology and crystalline structure controlled by annealing at 460 °C for 3 h is presented. The presence of circular-shaped TiO2-NFs was corroborated by scanning electron microscopy (SEM). By using X-ray photoelectron spectroscopy (XPS), the chemical binding energies and their interactions of the TiO2 with the different incorporated impurities were determined; the most intense photoelectronic transitions of Ti 2p3/2 (458.39 eV), O 1 s (529.65 eV) and C 1 s (284.51 eV) were detected for TTIP and slightly blue-shifted for TNBT. By using energy-dispersive X-ray spectroscopy (EDS), the chemical element percentages in TiO2 were determined. Using X-ray diffraction, it was found that the annealed electrospun TiO2-NFs presented the anatase crystalline phase and confirmed by Raman scattering. Bandgap energies were determined by diffuse reflectance spectroscopy at room temperature. The photocatalytic degradation of 2,4-dichlorophenoxyacetic acid (2,4-D) herbicide under exposure to ultraviolet light was studied using the TiO2-NFs obtained with the two molecular precursors. The results showed that the catalyst, prepared with the TTIP precursor, turned out to be the one that presented the highest photocatalytic activity with a half-life time (t1/2) of 28 min and a degradation percentage of 93%. The total organic carbon (TOC) in the solutions resulting from the 2,4-D degradation by the TiO2-NFs was measured, which showed a TOC removal of 50.67% for the TTIP sample and 36.14% for the TNBT sample. Finally, by using FTIR spectroscopy, the final chemical compounds of the degradation were identified as H2O and CO2.


Assuntos
Ácido 2,4-Diclorofenoxiacético , Nanofibras , Titânio , Titânio/química , Nanofibras/química , Ácido 2,4-Diclorofenoxiacético/química , Catálise
11.
Materials (Basel) ; 17(14)2024 Jul 13.
Artigo em Inglês | MEDLINE | ID: mdl-39063770

RESUMO

The increase in the world population and the intensification of agricultural practices have resulted in the release of several contaminants into the environment, especially pesticides and heavy metals. This article reviews recent advances in using adsorbent and catalytic materials for environmental decontamination. Different materials, including clays, carbonaceous, metallic, polymeric, and hybrid materials, are evaluated for their effectiveness in pollutant removal. Adsorption is an effective technique due to its low cost, operational simplicity, and possibility of adsorbent regeneration. Catalytic processes, especially those using metallic nanoparticles, offer high efficiency in degrading complex pesticides. Combining these technologies can enhance the efficiency of remediation processes, promoting a more sustainable and practical approach to mitigate the impacts of pesticides and other agricultural pollutants on the environment. Therefore, this review article aims to present several types of materials used as adsorbents and catalysts for decontaminating ecosystems affected by agricultural pollutants. It discusses recent works in literature and future perspectives on using these materials in environmental remediation. Additionally, it explores the possibilities of using green chemistry principles in producing sustainable materials and using agro-industrial waste as precursors of new materials to remove contaminants from the environment.

12.
Sci Total Environ ; 947: 174501, 2024 Oct 15.
Artigo em Inglês | MEDLINE | ID: mdl-38971239

RESUMO

Currently, pollution due to heavy metals, in particular dissolved mercury, is a major concern for society and the environment. This work aims to evaluate the current scenario regarding the removal/elimination of mercury. Mercury removal through adsorption is mainly done through artificial resins and metallic-organic frameworks. In the case of the zinc organic framework, it was able to adsorb Hg2+, reaching an adsorption capacity of 802 mg g-1. As for the Hg(0) the coconut husk was found to have the lowest equilibrium time, 30 min, and the highest adsorption capacity of 956.2 mg g-1. Experimental reports and molecular simulation indicate that the adsorption of mercury and other chemical forms occurs due to electrostatic interactions, ion exchange, precipitation, complexation, chelation, and covalent bonds, according to the material nature. The reported thermodynamic results show that, in most cases, the mercury adsorption has an endothermic nature with enthalpy levels below 40 kJ mol-1. Thermal and chemical regeneration methods lead to a similar number of 5 cycles for different materials. The presence of other ions, in particular cadmium, lead, and copper, generates an antagonistic effect for mercury adsorption. Regarding the other current technologies, it was found that mercury removal is feasible through precipitation, phytoremediation, and marine microalgae; all these methods require constant chemicals or a slow rate of removal according to the conditions. Advanced oxidative processes have noteworthy removal of Hg(0); however, Fenton processes lead to mineralization, which leads to Fe2+ and Fe3+ in solution; sonochemical processes are impossible to scale up at the current technology level; and electrochemical processes consume more energy and require constant changes of the anode and cathode. Overall, it is possible to conclude that the adsorption process remains a more friendly, economical, and greener process in comparison with other processes.

13.
Artigo em Português | LILACS-Express | LILACS | ID: biblio-1563436

RESUMO

Os grupos em saúde nascem para fomentar práticas coletivas de saúde, tendo se expandido para a atenção básica, encontrando ressonância na promoção da saúde e da qualidade de vida. Baseados nas teorias de Pichon-Rivière e de Yalom e Leszcz, esses grupos são capazes de contribuir para mudanças significativas na qualidade de vida de seus usuários participantes. Este artigo tem como objetivo analisar as contribuições dos grupos operativos da atenção primária à saúde a partir da visão de seus usuários e compreender a operacionalização desses grupos. Trata-se de pesquisa descritiva e analítica de caráter qualitativo, realizada em quatro grupos operativos em saúde da atenção básica de um município do Rio Grande do Norte, no interior do semiárido nordeste brasileiro. Os dados foram coletados por questionário socioeconômico e grupos focais entre março e agosto de 2023, sendo utilizada estatística descritiva para os questionários e análise temática de conteúdo para os grupos focais. Os questionários revelaram um predomínio de participantes do sexo feminino, com faixa etária acima dos 60 anos e situação socioeconômica de baixa renda. A análise de conteúdo demonstrou a efetividade dos grupos em produzir vetores grupais e fatores terapêuticos, além de seu potencial, como campo para a educação popular em saúde, em fomentar as redes sociais, o apoio, o acolhimento e o bem-estar biopsicossocial. Os grupos em saúde são estratégias eficazes na promoção da saúde e na qualidade de vida. Entretanto, ressalta-se a necessidade de pesquisas que avaliem a eficácia global dos grupos nos processos de morbimortalidade.


Health care groups were created to promote collective health practices and were expanded into Primary Care, helping to promote health and quality of life. Based on the theories of Pichon-Rivière and Yalom and Lezscz, these groups can contribute to significant changes in the quality of life of their participating users. Thus, this article analyzes the contributions of Primary Health Care operating groups from users' perspective and understands their operationalization. A descriptive analytical qualitative research was conducted with four health operating groups in Primary Care from a municipality in Rio Grande do Norte, in the semi-arid northeastern Brazil. Data were collected by means of a socioeconomic questionnaire and focus groups between March and August 2023, and investigated using descriptive statistics (questionnaires) and thematic content analysis (focus groups). The questionnaires revealed a predominance of female participants over 60 years old and with low-income socioeconomic status. Content analysis showed the groups' effectiveness in producing group vectors and therapeutic factors, as well as their potential as a field for popular health education in fostering social networks, support, user embracement, and biopsychosocial well-being. Health groups are effective strategies for promoting health and quality of life, future research should evaluate their global effectiveness in morbidity and mortality.


Los grupos de salud se crearon para promover prácticas de salud colectiva y se expandieron a la atención primaria, repercutiendo en la promoción de la salud y la calidad de vida. Basados en las teorías de Pichon-Rivière y Yalom y Lezscz, los grupos son capaces de contribuir a cambios significativos en la calidad de vida de sus usuarios participantes. Este artículo tuvo por objetivo analizar las contribuciones de los grupos operativos de atención primaria de la salud desde la perspectiva de sus usuarios, así como comprender la operacionalización de estos grupos. Se trata de una investigación cualitativa, descriptiva y analítica, realizada en cuatro grupos operativos de salud en atención primaria de un municipio de Rio Grande do Norte (Brasil), en el interior de la región semiárida del Nordeste de Brasil. Los datos se recogieron de un cuestionario socioeconómico y de grupos focales en el período entre marzo y agosto de 2023, utilizando estadística descriptiva para los cuestionarios y análisis de contenido temático para los grupos focales. Los cuestionarios revelaron un predominio de los participantes del sexo femenino, mayores de 60 años y con nivel socioeconómico de bajos ingresos. El análisis de contenido demostró la eficacia de los grupos en la producción de vectores grupales y factores terapéuticos, además de su potencial como campo de educación popular en salud para fomentar redes sociales, apoyo, acogida y bienestar biopsicosocial. Los grupos de salud son estrategias efectivas para promover la salud y la calidad de vida. Sin embargo, se destaca la necesidad de investigaciones que evalúen la efectividad global de los grupos en los procesos de morbimortalidad.

14.
J Fungi (Basel) ; 10(6)2024 Jun 12.
Artigo em Inglês | MEDLINE | ID: mdl-38921404

RESUMO

Gibberellic acid (GA3) is a tetracyclic diterpenoid carboxylic acid synthesized by the secondary metabolism of Fusarium fujikuroi. This phytohormone is widely studied due to the advantages it offers as a plant growth regulator, such as growth stimulation, senescence delay, flowering induction, increased fruit size, and defense against abiotic or biotic stress, which improve the quality and yield of crops. Therefore, GA3 has been considered as an innovative strategy to improve agricultural production. However, the yields obtained at large scale are insufficient for the current market demand. This low productivity is attributed to the lack of adequate parameters to optimize the fermentation process, as well as the complexity of its regulation. Therefore, this article describes the latest advances for potentializing the GA3 production process, including an analysis of its origins from crops, the benefits of its application, the related biosynthetic metabolism, the maximum yields achieved from production processes, and their association with genetic engineering techniques for GA3 producers. This work provides a new perspective on the critical points of the production process, in order to overcome the limits surrounding this modern line of bioengineering.

15.
Foods ; 13(11)2024 May 23.
Artigo em Inglês | MEDLINE | ID: mdl-38890848

RESUMO

The objective of this research was to investigate and compare the results obtained in the intensification and integration of (sc-CO2) under different pressure conditions (25 and 30 MPa) at 60 °C. When intensifying the process, ethanol (10%) was used as a co-solvent (sc-CO2 + EtOH). In the process integration, black soldier fly larvae flour, defatted via supercritical extraction (SFE), was the raw material for pressurized liquid extraction (PLE) using ethanol as solvent. The extract yields, fatty acid profile, free fatty acids, triacylglycerols (TAGs), oxidative stability, and nutritional quality of the oil obtained using sc-CO2 + EtOH were evaluated. The composition of bioactive compounds (carotenoids, acidity, antioxidant compounds, tocopherols, and phospholipids) was determined in both extracts. The yields of the extracts were different by 32.5 to 53.9%. In the extracts obtained with sc-CO2 + EtOH (10%), the predominant fatty acids were oleic, palmitic, and linoleic, with considerable levels of desirable fatty acids (DFA), tocopherols, and phospholipids. The nutritional indices showed good values for polyunsaturated and saturated fatty acids (PUFAs/SFAs), above 0.45%. Extracts from larvae meal defatted with SFE showed carotenoids, phenolic compounds, and antioxidant activity. HPTLC and HPLC analyses indicated the presence of amino acids, sugars, phenolics, and organic acids in their composition. This study revealed that the supercritical fluid extraction (SFE) process, or its conditions, can modify the fatty acid composition and the presence of minor bioactive compounds in the obtained extracts.

16.
Rev. Finlay ; 14(2)jun. 2024.
Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1565164

RESUMO

Se han evidenciado beneficios importantes cuando se realiza actividad física de intensidad moderada luego del diagnóstico de cáncer de mama. Las intervenciones deben comenzar antes, durante y después de la intervención quirúrgica. Se recomienda tener en cuenta: el estadio de la enfermedad, el tipo de cáncer, la condición física, la posibilidad de reducir el volumen o la intensidad de ejercicio; de no ser así se deberá empezar de forma progresiva aumentando poco a poco la intensidad y la duración de la actividad física. La actividad física ejercida de forma regular y con cierta intensidad reduce el riesgo de recidiva tumoral y la mortalidad por cáncer de mama; aumenta la calidad de vida, disminuye los efectos tóxicos de los tratamientos, por lo tanto, mejora el pronóstico de la enfermedad.


Important benefits have been shown when performing moderate-intensity physical activity after the diagnosis of breast cancer. Interventions must begin before, during and after the surgical intervention. It is recommended to take into account: the stage of the disease, the type of cancer, the physical condition, the possibility of reducing the volume or intensity of exercise; if not, you should start progressively, gradually increasing the intensity and duration of physical activity. Physical activity exercised regularly and with a certain intensity reduces the risk of tumor recurrence and mortality from breast cancer; it increases the quality of life, reduces the toxic effects of treatments, therefore, improves the prognosis of the disease.

17.
Enferm. foco (Brasília) ; 15: 1-6, maio. 2024. ilus, tab
Artigo em Português | LILACS, BDENF - Enfermagem | ID: biblio-1571169

RESUMO

Objetivo: descrever a experiência de uma intervenção educativa sobre tecnologia grupal para profissionais de saúde mental. Métodos: relato de experiência relativo a última etapa de uma pesquisa-intervenção, em que foram realizadas duas oficinas norteadas pelo referencial do Ciclo de Aprendizagem Vivencial, com a participação de 19 profissionais de três Centros de Atenção Psicossocial Álcool e Drogas da região central do Brasil. Resultados: ao longo do processo vivencial foi possível perceber que os participantes puderam repensar sua prática profissional nos grupos terapêuticos que conduzem, sensibilizando-os para a necessidade de instrumentalização dos recursos da tecnologia grupal. Conclusão: o uso do Ciclo de Aprendizagem Vivencial como ferramenta de qualificação favoreceu a tomada de consciência dos participantes com reflexões contextualizadas de suas práticas com grupos no cotidiano dos serviços, sensibilizando-os para incrementar suas competências teórico-práticas nos seus atendimentos. (AU)


Objective: to describe the experience of an educational intervention on group technology for mental health professionals. Methods: experience report on the last stage of an intervention research, in which two workshops were held guided by the framework of the Experiential Learning Cycle, with the participation of 19 professionals from three Psychosocial Care Centers for Alcohol and Drugs in the central region of Brazil. Results: throughout the experiential process, it was possible to see that the participants were able to rethink their professional practice in the therapeutic groups they lead, sensitizing them to the need to implement group technology resources. Conclusion: the use of the Experiential Learning Cycle as a qualification tool favored the participants' awareness with contextualized reflections on their practices with groups in the daily service, sensitizing them to increase their theoreticalpractical skills in their care. (AU)


Objetivo: describir la experiencia de una intervención educativa en tecnología grupal para profesionales de la salud mental. Métodos: relato de experiencia de la última etapa de una investigación de intervención, en la que se realizaron dos talleres guiados por el marco del Ciclo de Aprendizaje Experiencial, con la participación de 19 profesionales de tres Centros de Atención Psicosocial por Alcohol y Drogas de la región central de Brasil. Resultados: a lo largo del proceso vivencial, se pudo constatar que los participantes fueron capaces de repensar su práctica profesional en los grupos terapéuticos que lideran, sensibilizándolos sobre la necesidad de implementar recursos tecnológicos grupales. Conclusion: el uso del CAV como herramienta de calificación favoreció la conciencia de los participantes con reflexiones contextualizadas sobre sus prácticas con grupos en el servicio diario, sensibilizándolos para incrementar sus habilidades teórico-prácticas en su cuidado. (AU)


Assuntos
Capacitação de Recursos Humanos em Saúde , Serviços Comunitários de Saúde Mental , Educação Continuada , Assistência à Saúde Mental , Processos Grupais
18.
Chemosphere ; 361: 142355, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-38768787

RESUMO

As global effects of water scarcity raise concerns and environmental regulations evolve, contemporary wastewater treatment plants (WWTPs) face the challenge of effectively removing a diverse range of contaminants of emerging concern (CECs) from municipal effluents. This study focuses on the assessment of advanced oxidation processes (AOPs), specifically UV-C/H2O2 and UV-C/Chlorine, for the removal of 14 target CECs in municipal secondary effluent (MSE, spiked with 10 µg L-1 of each CEC) or in the subsequent MSE nanofiltration retentate (NFR, no spiking). Phototreatments were carried out in continuous mode operation, with a hydraulic retention time of 3.4 min, using a tube-in-tube membrane photoreactor. For both wastewater matrices, UV-C photolysis (3.3 kJ L-1) exhibited high efficacy in removing CECs susceptible to photolysis, although lower treatment performance was observed for NFR. In MSE, adding 10 mg L-1 of H2O2 or Cl2 enhanced treatment efficiency, with UV-C/H2O2 outperforming UV-C/Chlorine. Both UV-C/AOPs eliminated the chronic toxicity of MSE toward Chlorella vulgaris. In the NFR, not only was the degradation of target CECs diminished, but chronic toxicity to C. vulgaris persisted after both UV-C/AOPs, with UV-C/Chlorine increasing toxicity due to potential toxic by-products. Nanofiltration permeate (NFP) exhibited low CECs and microbial content. A single chlorine addition effectively controlled Escherichia coli regrowth for 3 days, proving NFP potential for safe reuse in crop irrigation (<1 CFU/100 mL for E. coli; <1 mg L-1 for free chlorine). These findings provide valuable insights into the applications and limitations of UV-C/H2O2 and UV-C/Chlorine for distinct wastewater treatment scenarios.


Assuntos
Cloro , Filtração , Peróxido de Hidrogênio , Fotólise , Raios Ultravioleta , Eliminação de Resíduos Líquidos , Águas Residuárias , Poluentes Químicos da Água , Peróxido de Hidrogênio/química , Águas Residuárias/química , Poluentes Químicos da Água/química , Poluentes Químicos da Água/análise , Eliminação de Resíduos Líquidos/métodos , Cloro/química , Filtração/métodos , Purificação da Água/métodos , Chlorella vulgaris/efeitos dos fármacos , Escherichia coli/efeitos dos fármacos , Oxirredução
19.
Neurosci Biobehav Rev ; 162: 105697, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38710422

RESUMO

The lifespan is influenced by adverse childhood experiences that create predispositions to poor health outcomes. Here we propose an allostatic framework of childhood experiences and their impact on health across the lifespan, focusing on Latin American and Caribbean countries. This region is marked by significant social and health inequalities nested in environmental and social stressors, such as exposure to pollution, violence, and nutritional deficiencies, which critically influence current and later-life health outcomes. We review several manifestations across cognition, behavior, and the body, observed at the psychological (e.g., cognitive, socioemotional, and behavioral dysfunctions), brain (e.g., alteration of the development, structure, and function of the brain), and physiological levels (e.g., dysregulation of the body systems and damage to organs). To address the complexity of the interactions between environmental and health-related factors, we present an allostatic framework regarding the cumulative burden of environmental stressors on physiological systems (e.g., cardiovascular, metabolic, immune, and neuroendocrine) related to health across the life course. Lastly, we explore the relevance of this allostatic integrative approach in informing regional interventions and public policy recommendations. We also propose a research agenda, potentially providing detailed profiling and personalized care by assessing the social and environmental conditions. This framework could facilitate the delivery of evidence-based interventions and informed childhood-centered policy-making.


Assuntos
Alostase , Humanos , Alostase/fisiologia , América Latina/epidemiologia , Experiências Adversas da Infância , Estresse Psicológico
20.
Chemosphere ; 360: 142372, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38768783

RESUMO

The present study demonstrates, for the first time, the feasibility of a two-step process consisting of Electro-Fenton (EF) followed by microalgae to treat highly loaded real food processing wastewater along with resource recovery. In the first step, EF with a carbon felt cathode and Ti/RuO2-IrO2 anode was applied at different current densities (3.16 mA cm-2, 4.74 mA cm-2 and 6.32 mA cm-2) to decrease the amount of organic matter and turbidity and enhance biodegradability. In the second step, the EF effluents were submitted to microalgal treatment for 15 days using a mixed culture dominated by Scenedesmus sp., Chlorosarcinopsis sp., and Coelastrum sp. Results showed that current density impacted the amount of COD removed by EF, achieving the highest COD removal of 77.5% at 6.32 mA cm-2 with >95% and 74.3% of TSS and PO43- removal, respectively. With respect to microalgae, the highest COD removal of 85% was obtained by the culture in the EF effluent treated at 6.32 mA cm-2. Remarkably, not only 85% of the remaining organic matter was removed by microalgae, but also the totality of inorganic N and P compounds, as well as 65% of the Fe catalyst that was left after EF. The removal of inorganic species also demonstrates the high complementarity of both processes, since EF does not have the capacity to remove such compounds, while microalgae do not grow in the raw wastewater. Furthermore, a maximum of 0.8 g L-1 of biomass was produced after cultivation, with an accumulation of 32.2% of carbohydrates and 25.9% of lipids. The implementation of the two processes represents a promising sustainable approach for the management of industrial effluents, incorporating EF in a water and nutrient recycling system to produce biomass that could be valorized into clean fuels.


Assuntos
Biodegradação Ambiental , Microalgas , Eliminação de Resíduos Líquidos , Águas Residuárias , Águas Residuárias/química , Eliminação de Resíduos Líquidos/métodos , Manipulação de Alimentos/métodos , Poluentes Químicos da Água/análise , Ferro/química , Peróxido de Hidrogênio/química , Análise da Demanda Biológica de Oxigênio , Scenedesmus/crescimento & desenvolvimento
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