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ABSTRACT The semi-arid region faces problems related to water deficit and the presence of brackish water that compromise crop performance. Therefore, irrigation frequency can enhance the growth of agricultural crops of interest even under salt stress conditions. In this context, the objective of the present study was to evaluate different irrigation frequencies with water of higher and lower salinity on the agronomic performance of millet. The experiment was conducted from September to November 2020, in the experimental area of the Auroras Seedling Production Unit, belonging to the Universidade da Integração Internacional da Lusofonia Afro-Brasileira, Redenção, Ceará, Brazil. The experimental design used was completely randomized in a 4 × 2 factorial arrangement, with five repetitions. The first factor corresponded to four irrigation frequencies (F1 - daily irrigation; F2 - irrigation every two days; F3 - irrigation every three days; F4 - irrigation every four days) and the second factor consisted of two levels of electrical conductivity of irrigation water (0.3 and 5.0 dS m-1). Salt stress (5.0 dS m-1) negatively affected leaf area, plant height, stalk diameter, panicle length, and leaf, stem, panicle, and total dry mass of millet, under daily and four-day irrigation frequencies. Increasing the interval in irrigation frequency to beyond two days negatively affects the agronomic performance of millet crop, regardless of the electrical conductivity of water used (0.3 or 5.0 dS m-1). Under salt stress conditions, adopting irrigation frequencies between two and three days can be a viable alternative for irrigation management in pearl millet crop.

RESUMO A região semiárida apresenta problemas relacionados ao déficit hídrico e presença de água salobra que comprometem o desempenho das culturas. Assim, a frequência de irrigação pode promover melhores condições de desenvolvimento das culturas de interesse agrícola mesmo em condições de estresse salino. Neste sentido, objetivou-se avaliar diferentes frequências de irrigação com água de maior e menor salinidade sobre desempenho agronômico do milheto. O experimento foi realizado no período de setembro a novembro de 2020, na área experimental da Unidade de Produção de Mudas Auroras, pertencente a Universidade da Integração Internacional da Lusofonia Afro-Brasileira, Redenção, Ceará. O delineamento experimental utilizado foi inteiramente casualizado em arranjo fatorial 4 × 2, com cinco repetições. O primeiro fator corresponde a quatro frequências de irrigação (F1 - irrigação diária; F2 - irrigação a cada dois dias; F3 - irrigação a cada três dias; F4 - irrigação a cada quatro dias) e o segundo consistiu em dois níveis de condutividade elétrica da água de irrigação (0,3 e 5,0 dS m-1). O estresse salino (5,0 dS m-1) afetou negativamente a área foliar, altura da planta, diâmetro do colmo, comprimento da panícula, massa seca da folha, caule, panícula e total do milheto, sob irrigação diária e cada quatro dias. O aumento do intervalo na frequência de irrigação acima de dois dias afeta o desempenho agronômico do milheto, independente da condutividade elétrica da água (0,3 ou 5,0 dS m-1). Em condições de estresse salino, adotar frequências de irrigação entre dois e três dias pode ser uma alternativa viável para o manejo da irrigação do milheto.

https://doi.org/10.1590/1807-1929/agriambi.v28n3e272197

First report of Raillietiella mottae (Pentastomida: Raillietiellidae) infecting Rhinella diptycha (Anura, Bufonidae) in the Brazilian Northeast
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Lima, A. E. S.

; Duarte, R. G.

; Lacerda, G. M. C.

; Almeida, W. O.

; Ribeiro, S. C.

Brazilian Journal of Biology

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2024, Volumen 84 elocation e247768

Resumen: En | Texto: En | PDF: En

https://doi.org/10.1590/1519-6984.247768

Morphophysiological changes of Acca sellowiana (Myrtaceae: Myrtoideae) saplings under shade gradient
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Silva, L. R.

; Moura, A. P. C.

; Gil, B. V.

; Rohr, A.

; Almeida, S. M. Z.

; Donazzolo, J.

; Perboni, A. T.

; Oliveira, F. L. R.

; Sant’Anna-Santos, B. F.

; Galon, L.

; Danner, M. A.

Brazilian Journal of Biology

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2024, Volumen 84 elocation e252364

Resumen: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Resumo A verificação de mudanças morfológicas e fisiológicas sob diferentes condições luminosas em espécies frutíferas nativas em estágio juvenil é importante, uma vez que indicam o ambiente adequado para a formação de mudas com alto vigor. Objetivou-se verificar o crescimento e as alterações morfofisiológicas sob gradiente de sombreamento em mudas de feijoa (Acca sellowiana (O. Berg) Burret) para obter mudas de boa qualidade, adequadas para fomentar os plantios da espécie em pomares. As mudas foram cultivadas por vinte e um meses sob quatro tratamentos de sombreamento (0%, 30%, 50% e 80%). Foram avaliados parâmetros de crescimento, pigmentos fotossintéticos, trocas gasosas, fluorescência da clorofila e anatomia foliar. Mudas a pleno sol e 30% de sombra apresentaram maior crescimento em altura, diâmetro e acúmulo de massa seca, devido à maior taxa de fotossíntese. Como principais mecanismos de aclimatação sob 80% de sombra, as mudas desenvolveram maior área foliar, redução da espessura do limbo foliar e aumento do rendimento quântico do fotossistema II. Mesmo assim, a assimilação líquida de CO2 e a taxa de transporte de elétrons foram menores e, consequentemente, houve restrição ao crescimento e acúmulo de massa seca das mudas no maior nível de sombreamento. Portanto, para a obtenção de mudas de feijoa de maior qualidade, recomendamos que seja realizada a pleno sol ou até 30% de sombra, para maximizar o vigor das mudas em viveiros e, posteriormente, este ambiente de luz também pode ser utilizado em pomares para favorecer o crescimento e a produção de frutos.

Abstract Understanding morphological and physiological changes under different light conditions in native fruit species in juveniles’ stage is important, as it indicate the appropriate environment to achieve vigorous saplings. We aimed to verify growth and morphophysiological changes under shade gradient in feijoa (Acca sellowiana (O. Berg) Burret) to achieve good quality saplings adequate to improve cultivation in orchards. The saplings were grown for twenty-one-month under four shading treatments (0%, 30%, 50%, and 80%). Growth, photosynthetic pigments, gas exchanges, chlorophyll fluorescence, and leaf anatomy parameters were evaluated. Saplings under full sun and 30% shade had higher height and diameter growth and dry mass accumulation due to higher photosynthesis rate. As main acclimatization mechanisms in feijoa saplings under 80% shade were developed larger leaf area, reduced leaf blade thickness, and enhanced quantum yield of photosystem II. Even so, the net CO2 assimilation and the electron transport rate was lower and, consequently, there was a restriction on the growth and dry mass in saplings under deep shade. Therefore, to obtain higher quality feijoa saplings, we recommend that it be carried out in full sun or up to 30% shade, to maximize the sapling vigor in nurseries and, later, this light environment can also be used in orchards for favor growth and fruit production.

https://doi.org/10.1590/1519-6984.252364

When hunger is greater than the beak: Guira Tanager (Aves, Thraupidae) strategy to optimize frugivory
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Silva, L. B.

; Silva, W. C.

; Lima, J. R. F.

; Souza, J. T.

; Castro, C. C.

; Almeida, N. M.

Brazilian Journal of Biology

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2024, Volumen 84 elocation e258191

Resumen: En | Texto: En | PDF: En

https://doi.org/10.1590/1519-6984.258191

Advances in Breast Cancer Drug Discovery: A Review of Therapeutic Strategies and Studies Involving Photosensitizers, Caged Xanthones and Thiosemicarbazones Derivatives Discovery Photosensitizers
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Oliveira, Douglas D. S.

; Lapierre, Thibault J. W. Jacques Dit

; Silva, Fernanda C.

; Cunha, Ieda V.

; Souza, Rafael A. C.

; Matos, Patrícia A.

; Almeida, Gustavo M.

; Oliveira, Carolina G.

; Araújo, Thaise G.

; Tsubone, Tayana M.

; Rezende Jr., Celso O.

Journal of the Brazilian Chemical Society

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2024, Volumen 35 Nº 1 elocation e-20230128

Resumen: En | Texto: En | PDF: En

Cancer is one of the major causes of death worldwide, and breast cancer is the most prevalent and deadly type among women. Despite the side effects and the phenomena of chemoresistance associated with the drugs involved, chemotherapy remains the main therapeutic strategy to combat and control breast cancer. Therefore, several new classes of compounds against breast cancer have been explored, in an effort to identify new drug candidates with alternative mechanisms of action. The principal results of such exploration, focusing on caged xanthones, thiosemicarbazones and photosensitizers, are presented in this review, along with the main aspects of the drug discovery process against breast cancer. More specifically, the design, structure-activity relationship investigations and anti-breast cancer properties of these three classes are described and discussed in this work. worldwide women involved Therefore explored action exploration xanthones photosensitizers review specifically design structureactivity structure activity antibreast anti work

https://doi.org/10.21577/0103-5053.20230128

Percepção de imagem corporal, características socioeconômicas e estilo de vida em mulheres participantes do ELSA-Brasil na Bahia, Brasil
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Novaes, Ester Maria Dias Fernandes de

; Aquino, Estela M. L.

; Gabrielli, Ligia

; Matos, Sheila Maria Alvim de

; Griep, Rosane Harter

; Fonseca, Maria de Jesus Mendes da

; Almeida, Maria da Conceição Chagas de

; Patrão, Ana Luísa

Cadernos de Saúde Pública

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2024, Volumen 40 Nº 2 elocation e00107823

Resumen: Pt Es En | Texto: Pt Es En | PDF: Pt | PDF: Es | PDF: En

Distorção da imagem corporal é uma alteração da percepção do corpo que pode repercutir na saúde. Este estudo visa estimar, entre mulheres participantes do Estudo Longitudinal de Saúde do Adulto (ELSA-Brasil) residentes na Bahia, Brasil, a prevalência de acurácia e distorção da imagem corporal e investigar associações com características socioeconômicas, estilo de vida e procura de cuidados ginecológicos. Participaram 609 mulheres de 50-69 anos de idade que responderam, entre 2012-2014, questionários aplicados face a face. Foi utilizada a escala de silhuetas de Stunkard para investigar a percepção acurada ou distorcida para mais ou menos peso. A razão de risco relativo (RR) foi calculada por meio de regressão logística multinomial por meio do Stata 13. A maioria das participantes tem perspectiva acurada do próprio corpo (53,7%). Entre aquelas com percepção distorcida, há uma tendência à distorção para menos peso (38,1%). Na análise de regressão multinomial, permaneceram associadas à distorção para menos peso as variáveis raça/cor e escolaridade, sendo que a primeira foi positivamente associada à distorção para menos peso entre as pardas (RR = 1,89; IC95%: 1,13-3,16) e pretas (RR = 2,10; IC95%: 1,25-3,55), enquanto a segunda entre aquelas com escolaridade até o Ensino Médio (RR = 1,65; IC95%: 1,18-2,33). Não houve associações quanto às demais variáveis, nem com distorção para mais peso. Os resultados contribuem para a explicação das relações entre percepção da imagem corporal e fatores socioeconômicos, revelando que mulheres de raça/cor diferentes e variados níveis de escolaridade são influenciadas de formas distintas pelos discursos sociais, o que impacta a percepção da sua imagem corporal.

La distorsión de la imagen corporal es una alteración en la percepción del cuerpo que puede repercutir en la salud. Este estudio busca estimar, entre las mujeres participantes del Estudio Longitudinal de Salud del Adulto (ELSA-Brasil) que viven en Bahía, Brasil, la prevalencia de precisión y distorsión de la imagen corporal e investigar asociaciones con las características socioeconómicas, el estilo de vida y la busca de atención ginecológica. Participaron 609 mujeres que tenían entre 50 y 69 años que contestaron los cuestionarios aplicados cara a cara entre 2012 y 2014. Se utilizó la escala de siluetas de Stunkard para investigar la percepción precisa o distorsionada para más o menos peso. El cociente de riesgo relativo (RR) se calculó a través de regresión logística multinomial utilizando el Stata 13. La mayoría de los participantes tiene una perspectiva precisa del propio cuerpo (53,7%). Entre las personas con percepción distorsionada hay una tendencia a la distorsión para menos peso (38,1%). En el análisis de regresión multinomial, las variables raza/color y escolaridad permanecieron asociadas con la distorsión para menos peso, siendo la primera positivamente asociada con la distorsión para menos peso entre las mujeres pardas (RR = 1,89; IC95%: 1,13-3,16) y negras (RR = 2,10; IC95%: 1,25-3,55), mientras la segunda entre las mujeres que estudiaron hasta la enseñanza secundaria (RR = 1,65; IC95%: 1,18-2,33). No hubo asociaciones con las otras variables ni con la distorsión para más peso. Los resultados contribuyen para explicar las relaciones entre la percepción de la imagen corporal y los factores socioeconómicos, demostrando que mujeres de diferentes razas/colores y diferentes niveles de educación se influyen de distintas formas a través de discursos sociales, lo que impacta en la percepción de su imagen corporal.

Body image distortion is an alteration in the perception of the body that can have repercussions on health. This study aims to estimate the prevalence of body image accuracy and distortion among women participating in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil) living in Bahia State, Brazil, and to investigate associations with socioeconomic characteristics, lifestyle, and gynecological care seeking. A total of 609 women aged 50 to 69 years participated in the study, who answered face-to-face questionnaires from 2012 to 2014. The Stunkard silhouette scale was used to investigate accurate or distorted perception for more or less weight. The relative risk ratio (RR) was calculated by multinomial logistic regression using Stata 13. Most participants have an accurate perception of their own bodies (53.7%). Among those with distorted perception, there is a tendency to distort towards less weight (38.1%). In the multinomial regression analysis, the variables race/skin color and education remained associated with the distortion towards underweight. The race/skin color variable was positively associated with the distortion towards underweight among Mixed-race women (RR = 1.89; 95%CI: 1.13-3.16) and black (RR = 2.10; 95%CI: 1.25-3.55), while the education variable among those with up to high school education (RR = 1.65; 95%CI: 1.18-2.33). There were no associations with the other variables or with distortion for more weight. The results contribute to explaining the relationships between body image perception and socioeconomic factors, revealing that women of different races/skin colors and varying educational levels are influenced in different ways by social discourses, impacting the perception of their body image.

https://doi.org/10.1590/0102-311xpt107823

Climate control in the feeding area for Girolando cows: Effects on environmental and production variables
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Sousa, Lainny J. M. P. e

; Passini, Roberta

; Almeida, Eduardo A. de

; Amaral, Alliny das G.

Revista Brasileira de Engenharia Agrícola e Ambiental

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Dic 2023, Volumen 27 Nº 12 Paginas 973 - 979

Resumen: En Pt | Texto: En Pt | PDF: En | PDF: Pt

ABSTRACT High-production cows require facilities providing comfortable environments to enhance production efficiency and sustain milk quality. This study evaluated the impact of climatizing the feeding area post-morning and afternoon milking on environmental variables, thermal comfort indices, and the yield and quality of milk in lactating Girolando cows. The experiment followed a 4 × 4 Latin square design with four treatments across four experimental periods, using four cows per treatment. The post-milking climate control treatments included: shading; shading + ventilation; shading + ventilation + shower; and an evaporative adiabatic cooling system. The evaporative adiabatic cooling system proved most effective in maintaining thermal conditions near the comfort level for dairy cows, as indicated by lower thermal comfort indices. This system also enhanced morning and overall milk production. However, the climate control systems did not significantly affect the contents of protein, fat, or lactose in the milk.

RESUMO As vacas de alta produção necessitam de instalações que ofereçam ambientes amenos, para que ocorra aumento da sua eficiência produtiva e manutenção da qualidade do leite. Dessa forma, esse trabalho objetivou avaliar a influência da climatização da área de alimentação após o período das ordenhas matutina e vespertina sobre as variáveis ambientais, índices de conforto térmico, produtividade e qualidade do leite de vacas girolando em lactação. Foi utilizado o delineamento em quadrado latino 4 × 4, com quatro tratamentos e quatro períodos experimentais, com quatro animais por tratamento, totalizando 16 repetições. Os tratamentos foram os sistemas de climatização na pós-ordenha: sombreamento; sombreamento + ventilação; sombreamento+ ventilação+ ducha e sistema de resfriamento adiabático evaporativo. O sistema de resfriamento adiabático evaporativo aumenta a produção leiteira na ordenha da manhã e na produção total. Os teores de proteína, gordura e lactose não foram influenciados pelos sistemas de climatização estudados.

https://doi.org/10.1590/1807-1929/agriambi.v27n12p973-979

Long-term oncological and surgical outcomes after Video Endoscopic Inguinal Lymphadenectomy (VEIL) in patients with penile cancer
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Tobias-Machado, Marcos

; Ornellas, Antonio A.

; Hidaka, Alexandre K.

; Medina, Luis G.

; Mattos, Pablo A. L.

; Besio, Ruben S.

; Abreu, Diego

; Castro, Pedro R.

; Nishimoto, Ricardo H.

; Astigueta, Juan

; Dourado, Aurus

; Machado, Roberto D.

; Magnabosco, Wesley J.

; Corona-Montes, Victor

; Villoldo, Gustavo M.

; Zampolli, Hamilton C.

; Taha, Anis

; Auad, Pericles R.

; Faria, Eliney F.

; Arantes, Paulo B. O.

; Tavares, Alessandro

; Nascimento, Francisco S. M. S.

; Brazão Jr., Eder S.

; Rocha, Maurício M.

; Costa, Walter H.

; Panico, Vinicius

; Reis, Leonardo O.

; Almeida-Carrera, Roberto J.

; Silva, Rafael C.

; Zequi, Stênio C.

; Calixto, José R. R.

; Sotelo, Rene

International braz j urol

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Oct 2023, Volumen 49 Nº 5 Paginas 580 - 589

Resumen: En | Texto: En | PDF: En

ABSTRACT Objective: To report outcomes from the largest multicenter series of penile cancer patients undergoing video endoscopic inguinal lymphadenectomy (VEIL). Materials and Methods: Retrospective multicenter analysis. Authors of 21 centers from the Penile Cancer Collaborative Coalition-Latin America (PeC-LA) were included. All centers performed the procedure following the same previously described standardized technique. Inclusion criteria included penile cancer patients with no palpable lymph nodes and intermediate/high-risk disease and those with non-fixed palpable lymph nodes less than 4 cm in diameter. Categorical variables are shown as percentages and frequencies whereas continuous variables as mean and range. Results: From 2006 to 2020, 210 VEIL procedures were performed in 105 patients. Mean age was 58 (45-68) years old. Mean operative time was 90 minutes (60-120). Mean lymph node yield was 10 nodes (6-16). Complication rate was 15.7%, including severe complications in 1.9% of procedures. Lymphatic and skin complications were noted in 8.6 and 4.8% of patients, respectively. Histopathological analysis revealed lymph node involvement in 26.7% of patients with non-palpable nodes. Inguinal recurrence was observed in 2.8% of patients. 10y- overall survival was 74.2% and 10-y cancer specific survival was 84.8%. CSS for pN0, pN1, pN2 and pN3 were 100%, 82.4%, 72.7% and 9.1%, respectively. Conclusion: VEIL seems to offer appropriate long term oncological control with minimal morbidity. In the absence of non-invasive stratification measures such as dynamic sentinel node biopsy, VEIL emerged as the alternative for the management of non-bulky lymph nodes in penile cancer.

https://doi.org/10.1590/s1677-5538.ibju.2023.0065

Vegetative propagation strategies in commercial pineapple cultivars
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Almeida, Maria do R. A. de

; Souza, Everton H. de

; Costa, Eva M. R.

; Souza, Fernanda V. D.

Revista Caatinga

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Sep 2023, Volumen 36 Nº 3 Paginas 513 - 523

Resumen: En Pt | Texto: En Pt | PDF: En | PDF: Pt

ABSTRACT The production of healthy pineapple seedlings for commercial plantations has been one of the main limiting factors of the species, and the search for improvements to meet this demand has been constant. Therefore, the present study aimed to compare different propagation strategies (natural tillering, stem sectioning, and micropropagation) in three commercial cultivars 'BRS Imperial', 'Pérola', and Gold 'MD-2' of pineapple. Three methods of vegetative propagation were evaluated: conventional, stem sectioning, and micropropagation. The evaluations consisted of the number of seedlings produced by each method and the period for their development until planting in the field. According to the conventional propagation technique results, the young seedling type in the cultivar 'Pérola' was more abundant. In the propagation by sectioning the stem, the 'BRS Imperial' cultivar presented the highest number of seedlings. Regarding the micropropagation technique, the highest production of shoots was observed in the third subculture for all cultivars, especially for ‘BRS Imperial’, which presented the highest total number of shoots in all subcultures. It was concluded that the micropropagation technique proved efficient in producing uniform seedlings on a large scale, in addition to having an advantage in the greater number of seedlings produced compared to the other methods studied.

RESUMO A produção de mudas sadias de abacaxizeiro para plantios comerciais tem sido um dos principais fatores limitantes para a cultura e a busca de melhorias para atender essa demanda tem sido constante. Diante disso, objetivou-se neste trabalho comparar diferentes estratégias de propagação em três cultivares comerciais de abacaxizeiro ‘BRS Imperial’, ‘Pérola’ e Gold ‘MD-2’. Foram analisados três métodos de propagação vegetativa: convencional, seccionamento do talo e micropropagação em relação as características número de mudas produzidas por cada método e o período para o seu desenvolvimento das mudas até o plantio em campo. De acordo com os resultados da técnica de propagação convencional, a muda tipo filhote, na cultivar ‘Pérola’, foi a que produziu em maior quantidade. Na propagação por seccionamento de talo, a cultivar ‘BRS Imperial’ foi a que apresentou o maior número de mudas. Em relação à técnica de micropropagação a maior produção de brotos foi observada no terceiro subcultivo em todas as cultivares, principalmente a ‘BRS Imperial’ que apresentou o maior número total de brotos. Concluiu-se que, a técnica de micropropagação de abacaxizeiro foi eficiente para a produção de mudas uniformes em larga escala, além de apresentar maior número de mudas produzidas em comparação aos outros métodos estudados.

https://doi.org/10.1590/1983-21252023v36n304rc

10.

Assessment of the Illumination and Communication Performance of a Visible Light System in an Indoor Scenario
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Farfan-Guillen, David Esteban

; Neves Junior, Paulo de Tarso

; Pohl, Alexandre de Almeida Prado

Journal of Microwaves, Optoelectronics and Electromagnetic Applications

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Sep 2023, Volumen 22 Nº 3 Paginas 360 - 378

Resumen: En | Texto: En | PDF: En

Abstract Visible-light communication (VLC) is a technique that employs light-emitting diodes (LEDs) and photodiodes to enable communication in indoor scenarios. VLC has gathered increasing attention due to its potential for data transmission across a broad unregulated spectrum (430-790 THz). One of VLC’s primary objectives is to utilize pre-existing LED infrastructures as access points. In this investigation, we assess the performance of an indoor VLC link by measuring the illumination characteristics of commercial LED luminaire. The results are utilized to design an electronic transmission and reception circuit. An analysis was conducted to identify the optimal operating point that ensures adequate lighting and reliable communication. The designed circuits exhibited a bandwidth of 50 MHz at -3 dB. Characterization of the luminaire demonstrated that a single luminaire provided the illumination (486 lx) within the recommended range at 1.6 m. For data transmission, the variable pulse position modulation (VPPM) and the orthogonal frequency-division multiplexing (OFDM) were employed in different configurations. The bit error rate (BER) results, with a threshold of ≤ 10-3, revealed that VPPM performed best at a distance of 1.9 m with a rate of 12.5 Mbps. Conversely, OFDM modulation achieved optimal performance at 1.75 m, providing a transmission rate of 30 Mbps.

https://doi.org/10.1590/2179-10742023v22i3271533

11.

Carga viral, linfócitos Cd4+ e qualidade de vida de pessoas vivendo com HIV em uso de terapia antirretroviral
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Santos, Cristiane Kelly Aquino dos

; Brito, Maria Eduarda Tavares

; Rodrigues, Mariana M.

; Ribeiro, Luiz C. P.

; Santos, Marcos Antonio Almeida

; Masi, Fabrizio Di

; Pereira, Gilene de Jesus

; Dantas, Estélio Henrique Martin

Motricidade

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Sep 2023, Volumen 19 Nº 3 Paginas 271 - 277

Resumen: En Pt | Texto: En Pt | PDF: En | PDF: Pt

ABSTRACT The emergence of HIV abruptly impacted health services in 1981, initially affecting restricted social groups. Currently, with the development of antiretroviral therapy, we are faced with a different disease from the one seen in the 80s, now with a chronic evolution. However, some barriers remain the same, such as the social, mental and physical impact of the diagnosis on the life of the person living with HIV. The objective of the present study was to verify the viral load, CD4+ lymphocyte count, and quality of life of people living with the human immunodeficiency virus. This was a cross-sectional observational research with a sample of 24 individuals of both sexes, with positive serology for HIV, in medical follow-up under antiretroviral treatment. A specific instrument was used to collect sociodemographic information. CD4+ count and HIV viral load results were collected from patients’ medical records. Quality of life (QoL) was assessed using the WHOQOL-HIV-BREF. Descriptive analysis was used to characterise the sample profile. Participants (46.8± 9.2 years) have completed high school (41.8%), with an income of one to three minimum wages (37.5%). They present a three-year diagnosis and CD4 lymphocyte count above 500 mm3 of blood (75%). Regarding QoL, the participants had a higher average for the physical domain (26.7± 5.3) and lower averages for the environment domains (10.9± 2.7) and social relationships (12.2± 2.8). The study concludes that the people living with HIV who participated in the study are young adults, with low income and level of education, with a low quality of life in relation to the environment and social relations domains.

RESUMO O surgimento do HIV impactou os serviços de saúde abruptamente em 1981, inicialmente afetando grupos sociais restritos. Atualmente, com o desenvolvimento da terapia antirretroviral, nos deparamos com uma doença diferente da encarada na década de 80, agora com uma evolução crônica. Todavia, algumas barreiras permanecem as mesmas, como o impacto social, mental e físico do diagnóstico na vida da pessoa que vive com HIV. O objetivo do presente estudo é verificar carga viral, contagem de linfócitos CD4+, e qualidade de vida de pessoas que vivem com o vírus da imunodeficiência humana. A presente pesquisa trata-se de um estudo observacional transversal com amostra de 24 indivíduos de ambos os sexos, com sorologia positiva para HIV, em acompanhamento médico sob tratamento antirretroviral. Foi utilizado um instrumento próprio para a coleta de informações sociodemográficas. Os resultados de contagem de CD4+ e a Carga Viral do HIV foram coletados dos prontuários médicos dos pacientes. A Qualidade de vida (QV) foi avaliada através do WHOQOL-HIV-BREF. Foi utilizada a análise descritiva para a caracterização do perfil da amostra. Os participantes (46,8± 9,2 anos) possuem ensino médio completo (41,8%), com renda de um a três salários mínimos (37,5%). Apresentam de um a três anos de diagnóstico e contagem de linfócitos CD4 acima de 500 mm3 de sangue (75%). Em relação à QV, os participantes apresentaram média mais alta para o domínio físico (26,7± 5,3) e mais baixa para os domínios de meio ambiente (10,9± 2,7) e relações sociais (12,2± 2,8). O estudo conclui que as pessoas que vivem com HIV participantes do estudo são adultos jovens, com renda e nível de escolaridade baixas, apresentam baixa qualidade de vida em relação aos domínios meio ambiente e relações sociais.

https://doi.org/10.6063/motricidade.31518

12.

Adaptive Hybrid Precoding Strategy for Cell-Free Massive MIMO
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Mathe, Dercio M.

; Acatauassu, Diogo

; Borges, Gilvan S.

; Rodrigues, Roberto M.

; Cavalcante, André M.

; Marquezini, Maria V.

; Almeida, Igor

; Costa, João C. W. A.

Journal of Microwaves, Optoelectronics and Electromagnetic Applications

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Jun 2023, Volumen 22 Nº 2 Paginas 257 - 267

Resumen: En | Texto: En | PDF: En

Abstract This work presents an adaptive hybrid signal precoding strategy for Cell-Free (CF) Massive multiple-input multiple-output (MIMO) systems. The proposed solution exploits the advantages of both distributed and centralized signal processing schemes to perform precoding. In our proposal, some access points (APs) are dynamically configured to be used in a centralized precoding scheme, whereas others are adjusted to employ a distributed method. Simulation results show that it is possible to achieve a good compromise between spectral efficiency (SE) and computational complexity (CC) in CF Massive MIMO systems finding a sensible balance between APs utilized in centralized and distributed precoding. To the best of our knowledge, prior-art solutions have not addressed an adaptive hybrid precoding method itself, they have only proposed a specific solution for each architecture, i.e., distributed or centralized.

https://doi.org/10.1590/2179-10742023v22i2266934

13.

Growth hormone effect on body composition of children born small for gestational age: a systematic review
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Kühl, Adriana M.

; Tortorella, Catiuscie C.S.

; Almeida, Claudia C.B.

; Gomes Dias, Marcia R.M.

; Pereira, Rosana M.

Jornal de Pediatria

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Jun 2023, Volumen 99 Nº 3 Paginas 219 - 227

Resumen: En | Texto: En | PDF: En

Abstract Objective The present study aimed to evaluate the effects of GH treatment on the body composition of children born with SGA. Methods This study is a systematic review of the literature. CINAHL, Embase; Medline/Pubmed, Scopus and Web of Science were searched from inception to March 2022. Results Four studies met the inclusion criteria, with an intervention time of 1 to 3 years, using doses from 0.03 to 0.07 mg/kg/day of GH. Bone densitometry by dual-energy X-ray absorptiometry (DXA) with whole-body scans was the most used method to assess body composition. Most studies (n= 3) had SGA children as a control group with the same characteristics as the case group; the mean age was similar between the groups (minimum of 5.1 ± 1.4 years and maximum of 6.7 ± 1 0.8 years) and all participants had an average height ≤ -3DP. The Lean Mass (LM) and Fat Mass (FM) outcomes of the studies were not presented in a standardized manner; thus, they cannot be compared. There was a significant increase in LM in the group treated with GH in relation to the pre-treatment period and in comparison, to the untreated control group. Three studies showed a significant decrease in FM at the end of the intervention period, and in two studies, this decrease occurred in the control group. Conclusions Despite the differences in the presentation of results and in the evaluation periods, the results of the studies showed that growth hormone favors the gain and maintenance of lean mass, and it also affects fat mass reduction and redistribution.

https://doi.org/10.1016/j.jped.2022.11.010

14.

Nickel Nanoparticles Anchored on Bentonite Clay for Methane Decomposition with Ordered Carbon as a Product
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Motta, Rayssa J. B.

; Dornelas, Camila B.

; Almeida, Rusiene M. de

Journal of the Brazilian Chemical Society

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May 2023, Volumen 34 Nº 5 Paginas 734 - 744

Resumen: En | Texto: En | PDF: En

Catalysts were synthesized with Ni and bentonite clay, without previous treatment, through wet impregnation with 5, 10 and 20% of Ni (m/m). They were characterized by energy dispersive X-ray fluorescence spectrometry (EDX), X-ray diffraction (XRD), temperature-programmed reduction (TPR), thermogravimetric analysis (TGA), adsorption and desorption of N2 at 77 K, and transmission electron microscopy (TEM). The catalytic activity in relation to the methane conversion reaction was evaluated at 500 ºC for 0.5 h. The addition of 10 and 20% of nickel to the clay led to a disordered bentonite structure, characterized by the disappearance of the 001 reflection on the X-ray diffractograms, with a consequent increase in the interaction between nickel oxide and clay (TPR). All catalysts synthesized showed catalytic activity in relation to the conversion of methane to form ordered carbon. The catalyst with 20% of nickel had the highest activity, with 74% of methane conversion.

https://doi.org/10.21577/0103-5053.20220144

15.

Conservative management of newborns with 35 weeks or more of gestational age at risk for early-onset sepsis: a Brazilian cohort study
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Camargo, Juliana F.

; Almeida, Juliana L.

; Fernandes, Lívia F.

; Marba, Sergio Tadeu M.

; Caldas, Jamil Pedro S.

Jornal de Pediatria

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Abr 2023, Volumen 99 Nº 2 Paginas 181 - 186

Resumen: En | Texto: En | PDF: En

Abstract Objective: To evaluate the conservative management of newborns born at ≥35 weeks of gestational age, at risk for early-onset neonatal sepsis (EOS). Methods: Retrospective, analytic cohort study (2016 to 2019), including newborns ≥35 weeks of gestational at risk of EOS, asymptomatic at birth, managed conservatively in full rooming-in: serial physical examination and clinical observation for at least 48 h. They were classified into three groups, according to the clinical course: asymptomatic (group A), symptomatic for other reasons (group B), and with sepsis (group C). Risk factors, clinical signs and differential diagnoses of sepsis, length of stay, and discharge conditions were evaluated. Results: The authors evaluated 769 asymptomatic newborns at risk of EOS. (mean birth weight 2999 ± 485 g and gestational age 37.6 ± 1.7 weeks, respectively) corresponding to 12.2% of rooming-in admissions. The most prevalent risk factors were colonization by Group B Streptococcus (29%), prolonged rupture membrane duration (21.9%) and preterm labor (21.4%). Most of all of them (53.9%) remained asymptomatic (group A). Group B corresponded for 45.3%, and the most common clinical signs were hypothermia (24.5%), tremors (8.7%) and vomiting (8%). Environmental dysthermia (50.7%), prematurity (20.0%), and feeding intolerance (15.7%) were common in Group B. Laboratory tests were performed in 3.5%. Five patients (one confirmed) comprised group C (0.8/1,000 live births). There were no deaths. The median length of stay was 64 h (IQR 50-93). Conclusion: The rate of clinical/confirmed EOS was low. Most of the symptomatic patients only needed clinical evaluation to rule out sepsis. Management was shown to be safe.

https://doi.org/10.1016/j.jped.2022.08.002

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