ABSTRACT Introduction: Historically, therapeutic avenues for patients with clinical stage II seminoma germ cell tumors (SGCT) were confined to radiotherapy and chemotherapy. While survival rates with these modalities are commendable, both entail substantial long-term morbidities. Furthermore, this youthful patient cohort exhibits elevated rates of secondary malignancies, surfacing decades post-successful primary cancer treatment (1). Recently, retroperitoneal lymph node dissection (RPLND) has emerged as a primary treatment consideration for individuals with low-volume metastatic seminoma (2–4). However, there is a dearth of video documentation illustrating the robotic assisted (RA) bilateral approach (5- 7). Methods: We present the case of a 24-year-old male who underwent prior left orchiectomy for seminoma (pT1b). Despite negative serum tumor markers, a 1.7 x 1.4cm lymph node enlargement was identified in the aortic bifurcation after 4 months, classifying the patient as stage IIA per the IGCCCG risk classification. Subsequently, a RA bilateral template RPLND was performed due to the patient's refusal of chemotherapy, citing concerns about offspring. Results: The surgery was performed, incorporating nerve sparing techniques, lasting 4h13minutes, an estimated bleeding rate of 400ml, without intraoperative complications. The patient was discharged within 24 hours of the procedure, following a prescribed low-fat diet. Conclusion: The patient experienced postoperative well-being, painlessness, and resumed work three weeks post-procedure. Preserved ejaculation was noted, and adjuvant therapy was performed with 2 cycles of EP due to the anatomopathological result. The feasibility of robotic primary RPLND for SGCT was demonstrated, showing reduced postoperative pain and early hospital discharge. Further studies are necessary to validate our findings regarding oncological, safety, and functional outcomes. Introduction Historically (SGCT chemotherapy commendable longterm long term morbidities Furthermore malignancies postsuccessful post successful 1. 1 . (1) Recently (RPLND lowvolume low volume 2–4. 2–4 (2–4) However (RA 5 (5 7. 7 7) Methods 24yearold yearold year old pT1b. pT1b pTb pT b (pT1b) markers 17 14cm cm 4cm months classification Subsequently s offspring Results techniques 4h13minutes hminutes h minutes 400ml ml complications procedure lowfat fat diet Conclusion wellbeing, wellbeing well being, being well-being painlessness postprocedure. postprocedure procedure. post-procedure noted result demonstrated discharge oncological safety outcomes (1 2– (2–4 ( (pT1b (2– (2

Resumo O objetivo deste estudo foi avaliar os parâmetros hemato-bioquímicos do tambaqui Colossoma macropomum em diferentes fases de crescimento em cultivo integrado com açaí Euterpe oleracea. Para isso, 240 tambaquis juvenis, com peso e comprimento médio inicial de 21,8 ± 7,74 g e 11,28 ± 6,88 cm, foram cultivados em sistema aquapônico integrado ao açaí por 180 dias. No período, 107 tambaquis saudáveis foram amostrados e categorizados em cinco fases distintas de crescimento. Em cada fase de crescimento foram coletadas alíquotas de sangue para análises. A 1ª fase avaliou peixes com peso médio de 103,1 ± 5,27 g; a 2ª, peixes com 823,4 ± 42,6 g; a 3ª, peixes com 1.087,75 ± 16,38 g; a 4ª, peixes com 1402,0 ± 76,6 g e a 5ª, peixes com 1815,0 ± 65,1 g. As variáveis de qualidade da água permaneceram dentro dos parâmetros aceitáveis para ambas as culturas. Eritrócitos foram significativamente diminuídos na 1ª e 2ª fase. Hemoglobina foi significativamente diminuída na 1ª fase. O hematócrito manteve-se igual a partir da 2ª fase. O VCM foi significativamente inferior nos peixes com 1815,0 ± 65,1 g. Os níveis de glicose plasmática foram significativamente diminuídos na 1ª e 2ª fases. Colesterol, triglicerídeos e proteínas totais foram significativamente aumentados nos peixes na 5ª fase. AST foi significativamente diminuído nos peixes na 3ª fase, comparado com a 1ª e 5ª fases. ALT foi significativamente aumentado nos peixes na 1ª fase, comparado com a 3ª, 4ª e 5ª fases. Os resultados são ferramentas importantes para avaliar a saúde e o bem-estar do tambaqui em pesquisas futuras envolvendo culturas aquapônicas. hematobioquímicos hemato bioquímicos oleracea isso 24 juvenis 218 21 8 21, 774 7 74 7,7 1128 11 28 11,2 688 6 88 6,8 cm 18 dias período 10 análises ª 1031 103 1 103, 527 5 27 5,2 8234 823 4 823, 426 42 42, 108775 087 75 1.087,7 1638 16 38 16,3 14020 1402 0 1402, 766 76 76, 18150 1815 1815, 651 65 65, mantevese manteve se Colesterol bemestar bem estar aquapônicas 2 77 7, 112 11, 68 6, 52 5, 82 10877 08 1.087, 163 3 16, 140 181 1087 1.087 14 108 1.08 1.0 1.

Abstract The aim of this study was to evaluate the haemato-biochemical parameters of tambaqui Colossoma macropomum in different growth phases in an integrated culture with açai Euterpe oleracea. For this, 240 juvenile tambaqui with initial average weight and length of 21.8 ± 7.74 g and 11.28 ± 6.88 cm were cultured in an aquaponic system integrated with açai for 180 days. During the period, 108 healthy tambaquis were sampled and categorized into five distinct growth phases. At each growth phase blood aliquots were collected. The first phase being fish with an average weight of 103.1 ± 5.27 g; second phase with 823.4 ± 42.6 g; third phase with 1087.75 ± 16.38 g; fourth phase with 1402.0 ± 76.6 g and fifth phase with 1815.0±65.1 g. Water quality variables remained within acceptable parameters for both cultures. Erythrocyte was significantly lower in the first and second phase. Haemoglobin was significantly lower in fish in the first phase. Haematocrit remained the same from the second phase onwards. MCV was significantly lower in fish with 1815.0 ± 65.1 g. Plasma glucose levels were significantly lower in the first and second phases. Cholesterol, triglycerides, and total proteins were significantly higher in fish of the fifth phase. AST was significantly lower in fish from the third phase when compared to fish from the first and fifth phases. ALT was significantly higher in fish from the first phase when compared to fish from the third, fourth, and fifth phases. The results are important tools for assessing the health and well-being of tambaqui in future research involving aquaponic cultures. haematobiochemical haemato biochemical oleracea 24 218 21 8 21. 774 7 74 7.7 1128 11 28 11.2 688 6 88 6.8 18 days period 10 collected 1031 103 1 103. 527 5 27 5.2 8234 823 4 823. 426 42 42. 108775 1087 75 1087.7 1638 16 38 16.3 14020 1402 0 1402. 766 76 76. 18150651 1815 65 1815.0±65. cultures onwards 18150 1815. 651 65. Cholesterol triglycerides wellbeing well 2 77 7. 112 11. 68 6. 52 5. 82 10877 1087. 163 3 16. 140 1815065 181 1815.0±65 14 181506 1815.0±6 1815.0±

Abstract The objective of this manuscript was to investigate the influence of different Babassu Mesocarp Flour (BMF) contents (3, 5, 8, and 10% by weight) on the physical and surface properties of the Poly(Lactic Acid) (PLA) matrix. For this purpose, composite films were produced through flat-die extrusion processing. Visual analysis showed that the films were successfully produced by this processing method and exhibited good handling. The physical properties of the films varied as follows: width (16.41‒20.38 cm), thickness (0.14‒0.24 mm), apparent density (0.78‒1.07 g/cm3), and grammage (168.34‒255.31 g/m2). Through optical microscopy, good distribution and dispersion of the particles were observed despite the presence of some agglomerates. The film surface became rough due to the incorporated flour content, which influenced the contact angle result. The combination of PLA/BMF for producing composite films has technological potential, enabling the valorization of an industrial by-product and preserving the environment. BMF (BMF 3, 3 (3 5 8 10 weight PolyLactic Poly Lactic Acid PLA (PLA matrix purpose flatdie flat die handling follows 16.41‒20.38 16412038 16 41 20 38 (16.41‒20.3 cm, cm , cm) 0.14‒0.24 014024 0 14 24 (0.14‒0.2 mm, mm mm) 0.78‒1.07 078107 78 1 07 (0.78‒1.0 g/cm3, gcm3 gcm g/cm3 g cm3 g/cm3) 168.34‒255.31 1683425531 168 34 255 31 (168.34‒255.3 g/m2. gm2 gm g/m2 . m2 m g/m2) microscopy agglomerates content result PLABMF potential byproduct product environment ( 16.41‒20.3 1641203 4 2 (16.41‒20. 0.14‒0.2 01402 (0.14‒0. 0.78‒1.0 07810 7 (0.78‒1. g/cm 168.34‒255.3 168342553 25 (168.34‒255. g/m 16.41‒20. 164120 (16.41‒20 0.14‒0. 0140 (0.14‒0 0.78‒1. 0781 (0.78‒1 168.34‒255. 16834255 (168.34‒255 16.41‒20 16412 (16.41‒2 0.14‒0 014 (0.14‒ 0.78‒1 078 (0.78‒ 168.34‒255 1683425 (168.34‒25 16.41‒2 1641 (16.41‒ 0.14‒ 01 (0.14 0.78‒ (0.78 168.34‒25 168342 (168.34‒2 16.41‒ 164 (16.41 0.14 (0.1 0.78 (0.7 168.34‒2 16834 (168.34‒ 16.41 (16.4 0.1 (0. 0.7 168.34‒ 1683 (168.34 16.4 (16. 0. (0 168.34 (168.3 16. (16 168.3 (168. (1 168. (168

RESUMO A carbonização da madeira com alto teor de umidade reduz o rendimento, prolonga o tempo de carbonização e resulta em carvão vegetal com baixa resistência mecânica. Diante disso, o reaproveitamento dos gases da carbonização como fonte de energia térmica se torna uma alternativa em potencial para redução do teor de umidade de forma rápida e viável. O objetivo deste estudo foi avaliar a secagem artificial de toras utilizando gases do sistema de carbonização de um forno e uma câmara de secagem. A avaliação da secagem foi realizada em duplicata utilizando um secador quadrado de metal galvanizado de 35 m³ e um forno com capacidade volumétrica útil de 16,8 m³. A temperatura média de admissão dos gases para a secagem foi de 150 °C. As toras de eucalipto foram divididas em três classes de diâmetro (8-14 cm; 14-22 cm e; 8-22 cm). O consumo de eletricidade do secador foi aproximadamente de 49,4 kW por tonelada de madeira (massa seca). A maior eficiência térmica foi alcançada na secagem de toras da classe de diâmetro de 8-14 cm. A utilização de gases de carbonização se mostrou eficaz na redução da umidade da madeira nas três classes de diâmetro, mostrando potencial para utilização em larga escala. rendimento mecânica disso viável 3 m 168 16 8 16, 15 C °C 814 14 (8-1 1422 22 14-2 822 8-2 . cm) 494 49 4 49, massa seca. seca seca) 8-1 escala 1 81 (8- 142 2 14- 82 8- (8 (

ABSTRACT The wood carbonization with high moisture content reduces the yield, prolongs the carbonization time and results in charcoal with low mechanical strength. Considering this, the reuse of carbonization gases as a source of thermal energy becomes a potential alternative for reducing moisture content quickly and feasibly. The objective of this study was to evaluate the artificial drying of logs using gases from the carbonization system of a furnace and a drying chamber. The drying evaluation was conducted in duplicate using a 35 m³ galvanized metal square dryer and a furnace with a useful volume capacity of 16.8 m³. The average gas intake temperature for drying was 150°C. The eucalyptus logs were divided into three diameter classes (8-14 cm; 14-22 cm; 8-22 cm). The electricity consumption of the dryer was approximately 49.4 kW per ton of wood (dry mass). The highest thermal efficiency was achieved in the drying of 814 cm diameter class logs. The utilization of carbonization gases proved to be effective in reducing wood moisture in all diameter classes, showing potential for large scale utilization. yield strength feasibly chamber 3 m 168 16 8 16. 150C C 150 150°C 14 (8-1 1422 22 14-2 822 8-2 cm. . cm) 494 49 4 49. dry mass. mass mass) 81 1 15 (8- 142 2 14- 82 8- (8 (

Resumo Esta pesquisa teve como objetivo produzir e avaliar painéis aglomerados com resíduo de pinus medianteuma metodologia de produçãoaplicada para painéis homogêneos e outra para heterogêneos. Os painéis homogêneos e heterogêneos foram produzidos com densidade inicial de 0,550 g/cm³ e com 10% e 12% de resina de poliuretano derivado do óleo de mamona (PUR) respectivamente. Os parâmetros de prensagem foram de 5 MPa, com temperatura de 100 ºC e 10 min de prensagem, com um intervalo de 30 s. Os ensaios realizados seguiram a normativa NBR 14810-2 (ABNT, 2018). Observou-se que a reorganização das partículas dos painéis heterogêneos somada ao aumento do adesivo foram fatores que melhoraram as propriedades finais desses painéis, classificados para ser utilizados como objetos de decoração e na indústria moveleira, enquanto os painéis homogêneos não obtiveram classificação. 0550 0 550 0,55 gcm³ gcm g cm³ cm g/cm 12 PUR (PUR respectivamente MPa 1 3 s 148102 14810 2 14810- ABNT, ABNT (ABNT 2018. 2018 . 2018) Observouse Observou se moveleira classificação 055 55 0,5 1481 201 05 0, 148 20 14

Abstract This research aimed to produce and evaluate particleboard with pinus waste using two production methodologies. One applied to homogeneous panels (single layer) and another to heterogeneous panels (three layers). The panels were produced with an initial density of 0.550 g/cm³, with 10% polyurethane resin derived from castor oil (PUR) for the homogeneous panels and 12% for the heterogeneous ones. The pressing parameters were 5 MPa, with a temperature of 100 ºC and 10 min of pressing, with an interval of 30 s. The tests performed according to NBR 14810-2 (ABNT, 2018) standard. As a result, it was observed that the reorganization of the particles of the heterogeneous panels added to the increase of the adhesive were factors that improved the final properties of the panels, which are classified to be used as decoration objects and in the furniture industry, not obtaining classification of homogeneous panels. methodologies single layer three layers. layers . layers) 0550 0 550 0.55 gcm³ gcm g cm³ cm g/cm³ PUR (PUR 12 ones MPa 1 3 s 148102 14810 2 14810- ABNT, ABNT (ABNT 2018 standard result industry 055 55 0.5 g/cm 1481 201 05 0. 148 20 14

Resumo Antecedentes Jogadores profissionais de futebol estão expostos a impactos cranianos repetitivos e ao risco de desenvolver encefalopatia traumática crônica. Objetivo Avaliar o metabolismo glicolítico cerebral regional (MCCr) e o volume de substância cinzenta (vSC) em jogadores de futebol aposentados (JFAs). Métodos Jogadores de futebol aposentados masculinos e controles pareados por idade e sexo foram incluídos prospectivamente entre 2017 e 2019. Foram realizadas avaliações neurológica e neuropsicológica, ressonância magnética (RM) e [18F]FDG-PET cerebrais (3.0-Tesla PET/RM). As imagens foram analisadas visualmente por um neurorradiologista e um médico nuclear cegos ao grupo de cada participante. O metabolismo glicolítico cerebral regional e o vSC foram avaliados através do programa SPM8. Os grupos foram comparados através de testes estatísticos apropriados disponíveis em SPM8 e R, de acordo com a distribuição e o tipo dos dados. Resultados Dezenove JFAs (mediana [IIQ]: 62 [50–64.5] anos) e 20 controles (60 [48–73] anos) foram incluídos. Os JFAs tiveram pior desempenho no mini-exame do estado mental e nos testes de dígitos, desenho do relógio, fluência verbal e fluência semântica e apresentaram MCCr significativamente reduzido no polo temporal e no giro temporal médio anterior esquerdos. Fluência semântica (animais) apresentou correlação positiva com MCCr no hipocampo direito, no polo temporal esquerdo e no aspecto posterior do giro temporal médio esquerdo. Menor vSC foi observado nas mesmas regiões, porém este achado não sobreviveu à correção para comparações múltiplas. Análise individual do [18F]FDG-PET cerebral revelou sete JFAs com claro hipometabolismo nas faces medial e lateral dos lobos temporais, nos lobos frontais e nas regiões temporoparietais. Os JFAs apresentaram ainda maior prevalência de anormalidades do septo pelúcido. Conclusão Os JFAs apresentam MCCr e vSC reduzidos nos lobos temporais, além de anormalidades do septo pelúcido, achados possivelmente relacionados a impactos cranianos repetitivos. crônica (MCCr (vSC JFAs. . (JFAs) 201 2019 neuropsicológica RM (RM 18FFDGPET FFDGPET 18F FDG PET F 3.0Tesla 30Tesla Tesla 3.0 3 0 PET/RM. PETRM PET/RM PET/RM) participante SPM R dados mediana IIQ [IIQ] 6 50–64.5 50645 50 64 5 [50–64.5 anos 2 60 (6 48–73 4873 48 73 [48–73 miniexame mini exame dígitos relógio esquerdos animais (animais direito múltiplas temporais temporoparietais pelúcido (JFAs 0Tesla 30 3. [IIQ 50–64. 5064 [50–64. ( 48–7 487 4 7 [48–7 50–64 506 [50–64 48– [48– 50–6 [50–6 [48 50– [50– [4 [50 [ [5

Abstract Background Professional soccer athletes are exposed to repetitive head impacts and are at risk of developing chronic traumatic encephalopathy. Objective To evaluate regional brain glucose metabolism (rBGM) and gray matter (GM) volume in retired soccer players (RSPs). Methods Male RSPs and age and sex-matched controls prospectively enrolled between 2017 and 2019 underwent neurological and neuropsychological evaluations, brain MRI and [18F]FDG-PET in a 3.0-Tesla PET/MRI scanner. Visual analysis was performed by a blinded neuroradiologist and a blinded nuclear physician. Regional brain glucose metabolism and GM volume were assessed using SPM8 software. Groups were compared using appropriate statistical tests available at SPM8 and R. Results Nineteen RSPs (median [IQR]: 62 [50–64.5] years old) and 20 controls (60 [48–73] years old) were included. Retired soccer players performed worse on mini-mental state examination, digit span, clock drawing, phonemic and semantic verbal fluency tests, and had reduced rBGM in the left temporal pole (pFDR = 0.008) and the anterior left middle temporal gyrus (pFDR = 0.043). Semantic verbal fluency correlated with rBGM in the right hippocampus, left temporal pole, and posterior left middle temporal gyrus (p ≤ 0.042). Cray matter volume reduction was observed in similar anatomic regions but was less extensive and did not survive correction for multiple comparisons (pFDR ≥ 0.085). Individual [18F]FDG-PET visual analysis revealed seven RSPs with overt hypometabolism in the medial and lateral temporal lobes, frontal lobes, and temporoparietal regions. Retired soccer players had a higher prevalence of septum pellucidum abnormalities on MRI. Conclusion Retired soccer players had reduced rBCM and CM volume in the temporal lobes and septum pellucidum abnormalities, findings possibly related to repetitive head impacts. encephalopathy (rBGM (GM RSPs. . (RSPs) sexmatched sex matched 201 evaluations 18FFDGPET FFDGPET 18F FDG PET F 3.0Tesla 30Tesla Tesla 3.0 3 0 PETMRI scanner physician SPM software R median IQR [IQR] 6 50–64.5 50645 50 64 5 [50–64.5 old 2 60 (6 48–73 4873 48 73 [48–73 included minimental mini mental examination span drawing pFDR 0.008 0008 008 0.043. 0043 0.043 043 0.043) hippocampus p 0.042. 0042 0.042 042 0.042) 0.085. 0085 0.085 085 0.085) (RSPs 0Tesla 30 3. [IQR 50–64. 5064 [50–64. ( 48–7 487 4 7 [48–7 0.00 000 00 004 0.04 04 0.08 08 50–64 506 [50–64 48– [48– 0.0 50–6 [50–6 [48 0. 50– [50– [4 [50 [ [5

ABSTRACT Background: Many gaps in the copaifera oleoresin yield remain unfulfilled, preventing the sustainable management of this valuable non-timber forest product. This work aimed to characterize a natural Copaifera reticulata population in the Amazon rainforest, test different positions and depths in the trees to flow oleoresin, and analyze changes in the productiveness between two harvests ten months-spaced. The study was conducted in a Brazilian rainforest area at the Jari Ecological Station (ESEC) in 2017 and 2018, including 26 trees. Results: The diametric and height distributions evidenced light-demanding and mostly medium-class-diameter trees. The annual increment (0.45 ± 0.003 cm/year) was average, while the occurrence was rare. The area hosts yielding and unyielding trees, providing an average oleoresin production of 603.60 mL/tree. Oleoresin only flowed by reaching the inner heartwood or the pith. Oleoresin was not fully replenished after ten months, but the first drilling stimulated some unyielding trees to deliver it later. Collecting should focus on medium-diameter trees. Conclusion: The growth and distribution behaviors may challenge Copaifera’s sustainable management, which depends on the individual tree mechanisms to provide and replenish the oleoresin. Background unfulfilled nontimber non timber product monthsspaced. monthsspaced months spaced. spaced months-spaced ESEC (ESEC 201 2018 2 Results lightdemanding light demanding mediumclassdiameter medium class diameter 0.45 045 0 45 (0.4 0003 003 0.00 cm/year cmyear cm year rare 60360 603 60 603.6 mLtree mL mL/tree pith later mediumdiameter Conclusion Copaiferas s 20 0.4 04 4 (0. 000 00 0.0 6036 6 603. 0. (0 (

RESUMO - RACIONAL: A pancreatectomia laparoscópica está se tornando uma abordagem amplamente usada para lesões benignas e malignas do pâncreas. OBJETIVOS: Descrever como realizar a pancreatectomia distal laparoscópica usando a Clockwise Technique. MÉTODOS: Paciente feminina com 18 anos de idade, apresentando tumor bem definido no corpo pancreático com 4 cm de diâmetro que sugeria o diagnóstico de tumor sólido pseudopapilar (tumor de Frantz). O paciente foi considerado para pancreatectomia distal laparoscópica pela Clockwise Technique. RESULTADOS: A Clockwise Technique parece apresentar outras vantagens técnicas significativas que facilitam a realização do procedimento. CONCLUSÕES: A pancreatectomia distal laparoscópica foi realizada com a clockwise technique, obtendo-se resultados satisfatórios.

ABSTRACT - BACKGROUND: Laparoscopic pancreatectomy is currently a widely used approach for benign and malignant lesions of the pancreas. AIMS: This study aimed to describe how to perform a laparoscopic distal pancreatectomy using The Clockwise Technique. METHODS: An 18-year-old female patient presented with a well-defined tumor in the pancreatic body with 4 cm in diameter that suggested a diagnosis of solid pseudopapillary tumor (Frantz’s tumor). The patient was recommended for laparoscopic distal pancreatectomy by using The Clockwise Technique. RESULTS: The clockwise, caudal-to-cephalic approach appears to have other significant technical advantages that facilitate the performance of the procedure. CONCLUSIONS: A laparoscopic distal pancreatectomy performed using The Clockwise Technique provides satisfactory outcomes.

Resumo A qualidade do solo é a sua capacidade de funcionar dentro dos limites do ecossistema e do uso da terra para assegurar a produtividade biológica, preservar a qualidade ambiental e promover a saúde dos vegetais e dos animais. Assim, o objetivo deste trabalho foi selecionar indicadores de qualidade de solo sensíveis às diferentes práticas agrícolas adotadas em áreas de sistemas agroecológicos na região do Cerrado Mineiro. As amostras de solos foram coletadas na camada de 0 a 20 cm da superfície, no final do período de seca, em três diferentes propriedades agrícolas familiares que se dedicam ao cultivo agroecológico (CA) localizadas nos municípios de Romaria e Uberlândia, Minas Gerais, Brasil. Foram avaliadas 10 amostras de solo, sendo cinco áreas com manejo agroecológico e cinco áreas de pasto, como referência. Foram avaliados os atributos químicos, população da microbiota, carbono da biomassa microbiana (CBM), respiração basal (RBS) e atividade das enzimas beta-glucosidase, fosfatase e arilsulfatase. As variáveis respiração basal, beta-glucosidase, pH, colônias de bactérias e de actinobactérias foram sensíveis aos diferentes manejos de cultivo agroecológico (CA) e pasto, podendo assim ser utilizadas como indicadores de qualidade de solo. Os valores médios entre a razão de CA e pasto destes indicadores foram 1,69, 1,20, 3,57 e 2,44, respectivamente. As áreas de cultivo agroecológico apresentaram um solo de melhor qualidade e, possivelmente, maior atividade das suas funções básicas.

Abstract Soil quality is its ability to function within the limits of the ecosystem and land use to ensure biological productivity, preserve environmental quality, and promote plant and animal health. Thus, the objective of this study was to select soil quality indicators sensitive to different agricultural practices adopted in areas of agroecological systems in the Cerrado of Minas Gerais, Brazil. Soil samples were collected in the 0-20 cm layer, at the end of the dry season, in three different rural properties dedicated to an agroecological system (AS) located in the municipalities of Romaria and Uberlândia, Minas Gerais, Brazil. Ten soil samples were evaluated, five from areas with agroecological management and five from pasture areas as reference. Chemical attributes, microbiota population, microbial biomass carbon (MBC), soil basal respiration (SBR), and activity of beta-glucosidase, phosphatase, and arylsulfatase enzymes were evaluated. The variables basal respiration, beta-glucosidase, pH, and bacterial and actinobacterial colonies were sensitive to different agroecological (AS) and pasture managements, so these variables can be used as indicators of soil quality. The mean values between the ratio of AS and pasture of these indicators were 1.69, 1.20, 3.57 and 2.44, respectively. Agroecological system areas showed a soil with better quality and, possibly, greater activity of its basic functions.

ABSTRACT The ornamental rock industry generates millions of tons of waste in different stages of rock processing. These wastes are stored or disposed of inadequately, which causes environmental degradation. The objective of this study was to evaluate the concomitant use of ornamental rock processing sludge as partial replacement of Portland cement in contents of 0%, 5%, 10% and 20% and of recycled stone aggregate as total replacement of coarse natural aggregates in the production and performance of granilite concrete plates. Four concrete formulations were produced with different replacement contents and their characteristics were determined through tests of axial compression strength, flexural tensile strength, water absorption, impact strength and strength to stains. Mechanical results were inversely proportional: the higher the sludge replacement content, the higher the axial compression strength and the lower the flexural tensile strength. Water absorption tests showed a gradual decrease with an increase in sludge replacement, impact tests showed that the plates performed better at resisting shocks best up to a height of 50 cm and, in terms of stain resistance, multi-use products and butoxyethanol-based stain remover were more efficient on waterproofed granilite concretes and natural rock pieces, respectively. It was possible to conclude that it was viable to use up to 20% replacement of the aforementioned wastes in conventional concrete, with additional minimization of environmental impact associated with the extraction and processing of ornamental stones.

RESUMO O objetivo deste estudo foi avaliar a evolução de CO2 em um LatossoloVermelho Eutrófico (Typic Eutrustox) fertirrigado com água residuária sanitária tratada e cultivado com Banana“Prata-Anã”. Foram coletadas amostras de solo com estrutura deformada nas profundidades de 0-20 e 20-40 cm no perfil do solo cultivado com banana “Prata-Anã”. O delineamento utilizado foi em blocos casualizados em arranjo de parcelas subdividas, com quatro repetições. Os fatores na parcela principal consistiram na aplicação de diferentes doses de água residuária sanitária tratada sendo: 130 % e 200 % em relação ao limite máximo de aplicação anual de 150 kg ha-1 de sódio no solo mais uma testemunha (água limpa + adubação mineral). Avaliou-se aos 7, 14, 21 e 28 dias a respiração microbiana no solo. Na profundidade de 20-40 cm o uso do tratamento controle promove redução exponencial na respiração do solo, tendendo a diminuir e estabilizar em 58,185 mg C-CO2 kg-1 evoluído no 28º dia de avaliação.

ABSTRACT The main objective of this research is to evaluate the CO2 evolution in a Red Eutrophic Latosol (Eutrudox) fertigated with treated sanitary wastewater under “Prata-Anã” banana cultivation. Disturbed soil samples were collected from 0-20 and 20-40 cm soil profile depths. The experimental design was random blocks arranged in split-plots with four replications. The main plot factors were different treated sanitary wastewater doses applied as 130% and 200% compared with the maximum annual soil application limit (150 kg sodium ha-1) and a control treatment (clean water + mineral fertilization). Soil respiration was evaluated on the 7th, 14th, 21st, and 28th days. The assessment of soil respiration at a depth of 0-20 cm indicates that the use of wastewater increases soil respiration by 19.89 and 28.46%, respectively for treatments TSW1 and TSW2 in relation to the control treatment. At a depth of 20-40 cm, the use of the control treatment promotes an exponential reduction in soil respiration, tending to decrease and stabilize at 58.185 mg C-CO2 kg-1 evolved on the 28th day of evaluation. Treatments with wastewater present respiratory behavior in a quadratic behavior, with minimum respiratory values estimated on the 18th day, respectively 83.4 and 54.0 mg evolved C-CO2 kg-1 for treatments TSW1 and TSW2.

Resumo Este trabalho avaliou a regeneração natural em área plantada há 13 anos com diferentes proporções de leguminosas fixadoras de nitrogênio. O plantio foi realizado em 2001, em pastagem abandonada, em Valença, sul do estado do Rio de Janeiro, com seis espécies florestais arbóreas não nodulantes, consorciadas com sete espécies leguminosas arbóreas nodulantes, de forma a estabelecer quatro proporções de leguminosas (30, 50, 65 e 80%) na composição botânica inicial. O delineamento experimental foi o de blocos ao acaso, com três repetições em parcelas de 940 m2. Em 2014, foram avaliados indivíduos regenerantes (≥ 60 cm) dentro de cada parcela e as espécies foram identificadas e classificadas quanto ao hábito de crescimento, grupo ecológico e síndrome de dispersão. Quantificou-se densidade absoluta, frequências absoluta e relativa e os índices de diversidade de Shannon e de equabilidade de Pielou. Foram encontradas 37 espécies que não haviam sido plantadas inicialmente. Somente três, das 13 espécies plantadas estiveram presentes no banco de plântulas. A maioria das espécies regenerantes eram arbóreas, pioneiras, com hábito de dispersão por zoocoria. O plantio misto com leguminosas arbóreas nodulantes é eficaz na ativação do processo de sucessão ecológica, uma vez que garante um alto recrutamento de espécies nativas regenerantes, com destaque para a composição botânica com 50 e 65%.

Abstract This study aimed to evaluate the ecological succession under different proportions of nitrogen-fixing trees intercropped with non-nitrogen fixing trees species through the understory floristic survey. A randomized block design with four treatments and three replications was conducted for 13 years with 30, 50, 65, and 80% of nitrogen-fixing trees in the whole plants used per plot. Fixed subplots with 10 m x 10 m were installed at the experimental plots and evaluated all individuals with height ≥ 60 cm to carry out the floristic survey. The species were identified and classified according to growth habit, the successional class, and dispersion syndrome. The natural regeneration vertical structure was evaluated with the following indicators: absolute density, absolute frequency, and relative frequency, the horizontal structure with Shannon’s diversity index and Pielou’s equitability index. The survey founded 37 species that had not been planted initially. Only three of the 13 planted species were present in the seedling bank. It was identified a more significant presence of pioneer trees species with zoochoric dispersion in the four treatments understory, indicating that the species mixed allowed the activation of the natural succession process. Treatments with 50 and 65 % of nitrogen-fixing trees favoured the diversity of species.

RESUMO Nas últimas décadas, têm-se observado o crescimento da demanda de água e o agravamento dos cenários de escassez hídrica, bem como a ampliação de alternativas de reuso de água de efluentes de qualidade inferior, em particular de esgotos domésticos tratados. Objetivou-se, com este trabalho, avaliar a influência do substrato de pó de coco no controle de transporte de solutos em solos irrigados com esgoto tratado doméstico. A água residuária doméstica tratada provém da Unidade Experimental de Tratamento e Reúso Hidroagrícola, no distrito de Mutuca-PE. O delineamento experimental foi em esquema fatorial (2 × 3), cujos fatores avaliados compreenderam dois tipos de solos típicos da região (Neossolo Litólico e Argissolo Amarelo) e três tratamentos (sem pó de coco, 1 cm de pó de coco e 2 cm de pó de coco), com cinco repetições. Os parâmetros de transporte dos íons sódio e potássio foram obtidos por ajuste numérico, utilizando-se o modelo STANMOD. Constatou-se a existência de interação com soluto, sódio e potássio, em solo arenoso. O modelo STANMOD apresentou ótimo desempenho na simulação do transporte de solutos no solo. A cobertura de pó de coco mostrou-se eficiente na diminuição da lixiviação de íons em ambos os solos estudados.

ABSTRACT In the last decades, there has been an increase in the demand for water and the aggravation of water scarcity scenarios, as well as the expansion of water reuse alternatives for lower quality effluents, in particular treated domestic sewage. The objective of this study was to evaluate the influence of coconut powder substrate on the control of solute transport in irrigated soils with treated sewage reuse. The treated domestic wastewater comes from the Experimental Unit for Treatment and Agricultural Reuse in the district of Mutuca, Pernambuco. The experimental design was in a factorial scheme (2 × 3), whose evaluated factors comprised two types of soils typical of the region (Leptosols and Yellow Argisol) and three treatments (no coconut powder, 1 cm coconut powder, and 2 cm coconut powder) with five replicates. The transport parameters of the sodium and potassium ions were obtained by numerical adjustment using the STANMOD model. It was found the existence of interaction with solute, sodium, and potassium in sandy soil. The STANMOD model presented excellent performance in the simulation of solute transport in the soil. Soil coverage with coconut powder was shown to be efficient in reducing leaching of ions in both studied soils.

Abstract Aim: This study aimed to compare the performance, metabolic, hemodynamic, and perceived exertion during the 6-minute step test (6MST) conducted with different step heights in healthy subjects and also to compare the performance between different age groups for each step height. The association between age, body mass index, level of physical activity, and lower limb measurements with performance were also evaluated. Methods: This is a cross-sectional study. Anthropometric measures, physical performance, and cardiovascular stress were evaluated during a self-paced 6MST with different step heights in healthy subjects in the age group of 18-59. All the participants underwent three-step tests (15 cm, 20 cm, and 30 cm) on the same day, in a randomized order. Results: Forty participants (20 men and 20 women) performed the tests. The performance in the test for the highest step was significantly lower compared to the step with the lowest height (152 ± 24 vs. 173 ± 27 and 184 ± 33; p < 0,05). The estimated peak oxygen consumption (VO2peak) increased by ∼2.5 mL.kg−1·min−1 with the increase in step height. Hemodynamic variables, such as percent of maximum heart rate (%HRmáx), and systolic blood pressure increased as the step height increased. There was a fair correlation between performance and the level of physical activity in the test with a step height of 15 cm and 20 cm. Conclusion: A higher step height caused greater cardiovascular stress, without exceeding the submaximal levels of the test, indicating that the 6MST can be used as an accurate instrument for evaluating aerobic capacity in healthy individuals.

ABSTRACT. This study evaluated the effect of phosphorus (P) supplementation on the intake, digestibility, and quality of aged meat from Nellore young bulls fed on high-grain diets finished in feedlot. Forty young bulls (30 months old) with an initial body weight (IBW) of 296 ± 25 kg were used. It was distributed in a completely randomized experimental design. The treatments were: without P supplementation (CO), commercial mineral supplement (CM), and supplementation with dicalcium phosphate (DP) with 2.4, 4.2, or 5.0 g of P per kg of dry matter (DM), respectively. Diets were composed of sugarcane bagasse (200 g kg-1) plus concentrate (800 g kg-1) on a dry matter (DM) basis. The meat quality parameters analyzed were pH, color, cooking losses, shear force, and water-holding capacity. P supplementation did not affect the intake and digestibility of nutrients There was no interaction (p > 0.05%) between diets and the aging time for the meat quality parameters. However, bulls fed with DP exhibited lower pH (5.98) compared to CO and CM (6.19 and 6.14, respectively). The longer aging time increased the cooking losses and intensity of yellow (b*). Under Brazilian conditions, feedlot Nellore cattle fed with high-grain diets do not require additional mineral supplements.