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ABSTRACT The objectives were to evaluate the effects of monensin and virginiamycin, alone or combined, on supplemented Nellore cattle grazing tropical grass during the rainy season. Two experiments were conducted simultaneously to evaluate intake, digestibility, CH4 emissions, blood parameters, performance, and carcass characteristics (Exp. 1), and ruminal fermentation and relative abundance of ruminal microorganisms (Exp. 2). Animals (n = 92 Exp. 1 and n = 12 Exp. 2) were distributed in a completely randomized design and allocated in twelve paddocks composed of Urochloa brizantha (A. Rich.) Stapf. cv. Xaraés. A protein-energetic supplementation of 3 g/kg of BW per day was provided to all animals. Supplements were: without additives (WA), monensin alone at 80 mg/kg of product (MN), virginiamycin alone at 150 mg/kg of product (VM), and monensin (80 mg/kg of product) combined with virginiamycin (150 mg/kg of product; MNVM). Treatments did not affect intakes of total dry matter (DM), supplement DM, and nutrients. However, the intakes of forage DM and crude protein decreased in cattle fed MNVM compared with animals fed WA, MN, and VM. Total volatile fatty acids increased in animals fed VM. Ruminal NH3-N decreased, and pH increased in animals fed MN, VM, and MNVM. Relative abundance of total F. succinogenes and S. ruminantium decreased and R. flavefaciens increased in animals fed MN and VM at d 118. Treatments had no effect on enteric CH4 emissions. The average daily gain (ADG) and total gain were greater in cattle fed MNVM than in cattle fed MN. Combination of monensin and virginiamycin altered the rumen microbial populations but did not decrease enteric CH4 emissions. However, it decreased forage dry matter intake without altering the ADG and total weight gain, leading to an increase in feed efficiency. Results from this study indicate an advantage in including feed additives combined in the diet of supplemented Nellore cattle grazing tropical grass during the rainy season.

https://doi.org/10.37496/rbz5220210225

Herpetofauna of protected areas in the Caatinga VIII: An updated checklist for the Serra das Confusões region with new data from Serra Vermelha, Piauí, Brazil
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Marques, Ricardo

; Garda, Adrian A.

; Furtado, Adriana P.

; Bruinjé, Andre C.

; Protázio, Arielson dos S.

; de Carvalho, Breno F.

; Vieira, Cecília R.

; Gomes, Dandara

; Pantoja, Davi L.

; Figueiredo, Diainara da S.

; Shepard, Donald B.

; Camurugi, Felipe

; Coelho, Felipe E. A.

; Magalhães, Felipe M.

; Caetano, Gabriel H. O.

; Colli, Guarino R.

; Paulino, Henrique M.

; Carvalho, Izabelle T. S.

; Graciene, Joedma

; Alvarenga, Júlio M.

; Clay, Natalie A.

; Albuquerque, Ralph L.

; Bosque, Renan J.

; Faria, Renato

; da Silveira-Filho, Ricardo R.

; Mângia, Sarah

; Cavalcante, Vitor H. G. L.

; Vieira, Washington L. S.

; da Silva, Willianilson P.

; Soares, Yan F. F.

; Mesquita, Daniel O.

Biota Neotropica

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2023, Volume 23 Nº 4 elocation e20231520

Resumo: En Pt | Texto: En Pt | PDF: En | PDF: Pt

Abstract It is repeatedly stressed the need to characterize the extant biodiversity in tropical ecosystems. However, inventory studies are still progressing slowly in dry ecosystems, leading to the underestimation of their true biodiversity and hindering conservation efforts. In this study, we present primary and secondary data, along with an updated list of amphibians and reptiles from two localities in the São Francisco-Gurguéia region in Piauí. Additionally, we compare the species composition between nine areas within the Caatinga, which were sampled using standardized methods over the past ten years, to examine broader spatial patterns of community composition. To survey reptiles and amphibians, we employed similar methods and sampling efforts in two areas within the Serra das Confusões National Park (SCNP) region. Our surveys recorded a total of 73 species of amphibians and reptiles, of which 24 are new distribution records for the SCNP region. Consequently, our findings increase the known herpetofauna in the region to 94 species. Despite their proximity, the two sites in the SCNP region exhibited only 42% similarity in species composition, and they differed significantly from other areas within the Caatinga. Furthermore, even the closer Caatinga areas presented differences in species composition, highlighting the necessity to evaluate biodiversity across the landscape and contribute to understanding biogeographic patterns.

Resumo É repetidamente enfatizada a necessidade de caracterizar a biodiversidade vivente em ecossistemas tropicais. No entanto, os estudos de inventário ainda estão progredindo lentamente em ecossistemas secos, levando à subestimação de sua verdadeira biodiversidade e dificultando os esforços de conservação. Neste estudo, apresentamos dados primários e secundários, juntamente com uma lista atualizada de anfíbios e répteis de duas localidades na região de São Francisco-Gurguéia, do Piauí. Além disso, comparamos a composição de espécies entre nove áreas dentro da Caatinga, que foram amostradas usando métodos padronizados nos últimos dez anos, para examinar padrões espaciais mais amplos de composição da comunidade. Para estudar répteis e anfíbios, utilizamos métodos e esforços de amostragem semelhantes em duas áreas na região do Parque Nacional da Serra das Confusões (PNSC). Nossos levantamentos registraram um total de 73 espécies de anfíbios e répteis, das quais 24 são novos registros de distribuição para a região do PNSC. Consequentemente, nossos resultados aumentam a herpetofauna conhecida na região para 94 espécies. Apesar da proximidade, os dois locais na região do PNSC exibiram apenas 42% de similaridade na composição de espécies e diferiram significativamente de outras áreas dentro da Caatinga. Mesmo áreas mais próximas da Caatinga apresentaram diferenças na composição de espécies, destacando a necessidade de avaliar a biodiversidade em toda a paisagem e contribuir para a compreensão de padrões biogeográficos.

https://doi.org/10.1590/1676-0611-bn-2023-1520

Post-fire dynamics of tree vegetation in forests with and without a history of selective logging in the Eastern Amazon
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COSTA, DANIELE L. DA

; DIAS, ANDREA N.

; FIGUEIREDO FILHO, AFONSO

; GAMA, JOÃO RICARDO V.

; ANDRADE, DÁRLISON F.C. DE

; AGUIAR, DIEGO R.

; SANTOS, MISAEL F. DOS

Anais da Academia Brasileira de Ciências

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2022, Volume 94 Supl. 4 elocation e20200994

Resumo: En | Texto: En | PDF: En

Abstract Worldwide, forests are susceptible to fire. Forests with fire and selective logging interactions require monitoring and evaluation. This study evaluated the phytosociology and dynamics of tree vegetation in a disturbed forest (DF) and an undisturbed forest (UF) in selective logging areas affected by fire, in the Brazilian East Amazon. All trees with DBH ≥ 5 cm were measured and identified botanically in 93 plots (5 X 50 m) in the DF area and 58 plots (5 X 50 m) in the UF area, in 2010 (before logging), 2011, 2015 and 2017 (two years after the fire). Analysis of species and tree composition, diversity, similarity, mortality and recruitment were carried out. The fire affected the DF and UF areas in a similar proportion in terms of trees loss and basal area, intensifying the mortality rate. In the short term (2 years), the fire did not cause a significant reduction in species diversity, but there was a tendency towards a similarity loss in species composition in the area disturbed by logging. Subsequent assessments are necessary to understand the forest’s recovery mechanisms.

https://doi.org/10.1590/0001-3765202220200994

Endoscopy infection control strategy during the COVID-19 pandemic: experience from a tertiary cancer center in Brazil
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Pombo, Amanda A.M.

; Lenz, Luciano

; Paulo, Gustavo A.

; Santos, Mônica A.

; Tamae, Patricia K.

; Santos, Alisson L.D.R.

; Rezende, Daniel T.

; Martins, Bruno

; Kawaguti, Fabio S.

; Pennachi, Caterina M.P.S.

; Gusmon-Oliveira, Carla C.

; Uemura, Ricardo S.

; Geiger, Sebastian

; Lima, Marcelo S.

; Baba, Elisa R.

; Figueiredo, Viviane R.

; Safatle-Ribeiro, Adriana

; Maluf-Filho, Fauze

; Ribeiro-Júnior, Ulysses

Clinics

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2021, Volume 76 elocation e2280

Resumo: En | Texto: En | PDF: En

OBJECTIVES: Strategic planning for coronavirus disease (COVID-19) care has dominated the agenda of medical services, which have been further restricted by the need for minimizing viral transmission. Risk is particularly relevant in relation to endoscopy procedures. This study aimed to describe a contingency plan for a tertiary academic cancer center, define a strategy to prioritize and postpone examinations, and evaluate the infection rate among healthcare workers (HCWs) in the endoscopy unit of the Cancer Institute of the State of São Paulo (ICESP). METHODS: We created a strategy to balance the risk of acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and to mitigate the effects of postponing endoscopic procedures in oncological patients. A retrospective analysis of prospectively collected data on all endoscopies between March and June 2020 compared with those during the same period in 2019 was carried out. All HCWs were interviewed to obtain clinical data and SARS-CoV-2 test results. RESULTS: During the COVID-19 outbreak, there was a reduction of 55% in endoscopy cases in total. Colonoscopy was the most affected modality. The total infection rate among all HCWs was 38%. None of the senior digestive endoscopists had COVID-19. However, all bronchoscopists had been infected. One of three fellows had a serological diagnosis of COVID-19. Two-thirds of all nurses were infected, whereas half of all technicians were infected. CONCLUSIONS: In this pandemic scenario, all endoscopy services must prioritize the procedures that will be performed. It was possible to maintain some endoscopic procedures, including those meant to provide nutritional access, tissue diagnosis, and endoscopic resection. Personal protective equipment (PPE) seems effective in preventing transmission of COVID-19 from patients to digestive endoscopists. These measures can be useful in planning, even for pandemics in the future.

https://doi.org/10.6061/clinics/2021/e2280 501 downloads

Prevalence of hepatitis A in the capitals of the States of North, Southeast and South regions of Brazil: decrease in prevalence and some consequences
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Pereira, Leila M. M. B.

; Stein, Airton T.

; Figueiredo, Gerusa Maria

; Coral, Gabriela Perdomo

; Montarroyos, Ulisses R.

; Cardoso, Maria Regina Alves

; Braga, Maria Cynthia

; Moreira, Regina Celia

; Santos, Alex A. dos

; Ximenes, Ricardo Alencar

Revista do Instituto de Medicina Tropical de São Paulo

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2021, Volume 63 elocation e34

Resumo: En | Texto: En | PDF: En

ABSTRACT Hepatitis A virus (HAV) infection has been considered one of the leading causes of acute hepatitis. The aim of the present study was to estimate the prevalence of HAV among children and adolescents in a population-based study in the capitals of the States of the North, Southeast and South of Brazil and identify predictive factors for the infection. A multi-stage sampling was used to select subjects aged between 5-9 and 10-19 years. Individual and household levels aside from the level of variables in the areas were collected. The outcome was the total IgG antibodies to HAV levels detected using a commercial Enzyme Immuno Assay (EIA). The associations between HAV and the independent variables were assessed using the odds ratio. A multilevel analysis was performed by GLLAMM using the Stata software. The prevalence of HAV infection in the 5-9 and 10-19 age groups was 28.7% and 67.5%, respectively for the North, 20.6% and 37.7%, for the Southeast and 18.9% and 34.5% for the South Region. The prevalence of HAV increased according to age in all sites. Variables related to education at the individual level (North and South), family and area level (South and Southeast) and family income level (Southeast and South) were independently associated with HAV infection. This emphasizes the need for individualized strategies to prevent the infection.

https://doi.org/10.1590/s1678-9946202163034 358 downloads

Estudo de enfermagem das propriedades térmicas da rede de dormir para prevenir úlcera por pressão
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Ramos, Ricardo Luiz

; Alves Machado, Wiliam Cesar

; Arias Torres, Dolly

; de Sousa Falcão, Ana Cristina

; de Sousa Velasque, Luciane

; Almeida de Figueiredo, Nébia Maria

Revista Cubana de Enfermería

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Dez 2018, Volume 34 Nº 4 elocation e1525

Resumo: Pt En Es | Texto: Pt En Es | PDF: Pt | PDF: En | PDF: Es

RESUMO Introdução: Pessoas acamadas estão susceptíveis as úlceras por pressão, embora as causas possam ser multifatoriais, a manutenção do microclima da pele constitui importante fator de prevenção dessas injúrias. Objetivo: Demonstrar as vantagens térmicas da Rede de dormir em relação ao Colchão hospitalar. Métodos: Experimental com seres humanos, amostra de 40 participantes, cada indivíduo foi seu próprio controle. O repouso em cada superfície de apoio foi de 30 minutos. Materiais: Colchão hospitalar D-28 revestido com capa em napa azul, Rede de dormir em algodão cru, termo higrômetro Minipa MT 242, termômetro digital infravermelho com mira laser e balança antropométrica. Para estatística utilizou-se Software R. Resultados: A temperatura de interface na Rd após os 15 minutos de repouso estabilizou na média de 1 ºC de elevação da temperatura inicial, no Colchão hospitalar ao término dos 30 minutos, a temperatura continuou em elevação, na média de 3 ºC. As variáveis não seguiram distribuição normal. O teste de Wilkoxon demonstrou diferença significativa para p<0,05. Conclusões: Demonstrou-se, em laboratório, que a Rede de dormir, em relação ao Colchão hospitalar, dissipa, significativamente, com maior eficiência o calor do corpo. O fato da Rede de dormir alterar minimamente um componente do microclima da pele sob pressão, fortalece a afirmativa que o seu uso contribui na prevenção da úlceras por pressão.

ABSTRACT Introduction: People bedridden are likely to Pressure Ulcers, although the causes may be multifactorial, the maintenance of the skin microclimate is an important factor for preventing these injuries. Objective: To demonstrate the advantages of thermal sleeping hammock in relation to the hospital mattress. Methods: Experimental with humans, sample of 40 participants, each individual has their own control. Resting on each support surface was 30 minutes. Methods: Hospital mattress D-28 coated with blue cover in nappa, sleeping hammock in raw cotton, thermo hygrometer Minipa MT 242, infrared digital thermometer with laser sight and anthropometric scale. Statistical software was used sleeping hammock. Results: The interface temperature at sleeping hammock after 15 minutes of rest stabilized average elevation of 1 °C initial temperature, at hospital mattress at the end of 30 minutes, the temperature continued to rise, the average of 3 °C. The variables did not follow normal distribution. The Wilkoxon test showed a significant difference at p <0.05. Conclusions: It has been demonstrated in the laboratory that sleeping hammock in relation to hospital mattress dissipates significantly more efficiently the heat of the body. The fact of sleeping hammock minimally change a microclimate component of the skin under pressure, strengthens the claim that their use contributes to the prevention of Pressure Ulcers.

RESUMEN Introducción: Las personas encamadas son susceptibles a úlceras por presión. Aunque las causas de estos padecimientos son multifactoriales, el mantenimiento del microclima de la piel constituye un factor importante de prevención. Objetivo: Demostrar las ventajas térmicas de la red de dormir en relación con el colchón hospitalario. Métodos: Estudio experimental con seres humanos. La muestra quedó conformada por 40 participantes; cada uno de ellos fue su propio control. El reposo en cada superficie de apoyo fue de 30 minutos. Materiales: colchón hospitalario D-28 revestido con capa impermeable azul; red en algodón 100 %-Minipa MT 242, termómetro laser digital infrarrojo y balanza antropométrica. Para el procesamiento estadístico se utilizó el software R. Resultados: La temperatura de interface en red de dormir, después de los 15 minutos de reposo, subió en promedio 1 °C con respecto a la temperatura inicial; en el colchón hospitalario, al término de los 30 minutos, la temperatura continuó elevándose con una media de 3 °C. Las variables no siguieron una distribución normal. El test de Wilkoxon demostró diferencia significativa con p<0,05. Conclusiones: Se demostró en prueba de laboratorio que la red disipa con mayor eficacia el calor del cuerpo. El que la red altere mínimamente un componente del microclima sobre la piel, confirma su utilidad en la prevención de úlceras por presión.

Hemodynamic Changes During Heart Displacement in Aorta No-Touch Off-Pump Coronary Artery Bypass Surgery: A Pilot Study
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Carvalho, Alexandre R.

; Guizilini, Solange

; Murai, Gustavo M.

; Begot, Isis

; Rocco, Isadora S.

; Hossne Jr, Nelson A.

; Chamlian, Eduardo G.

; Santos, João Manoel T.

; Macedo, Ricardo A.

; Lisboa, Gustavo C.O.

; Nasciutti, Alberto C.

; Santos, Carlos Eduardo R.

; Figueiredo, João Paulo M.

; Gomes, Walter J.

Brazilian Journal of Cardiovascular Surgery

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Out 2018, Volume 33 Nº 5 Páginas 469 - 475

Resumo: En | Texto: En | PDF: En

Abstract Objective: To evaluate the sequential changes of hemodynamic and metabolic parameters in patients who underwent aorta no-touch off-pump coronary artery bypass surgery (OPCAB). Methods: Prospective study involving twenty-seven consecutive patients who underwent aorta no-touch OPCAB. The FloTrac/PreSep/Vigileo™ system (Edwards Lifesciences) was used to continuously record heart rate (HR), mean arterial blood pressure (MABP), central venous pressure (CVP), continuous cardiac index (FCI), stroke volume (SV), stroke volume variation (SVV), and central venous oxygen saturation (ScvO2). The parameters were assessed 5 min before, during and 5 min after each anastomosis (left anterior descending [LAD], posterior descending [PD], obtuse marginal [OM] and diagonal [Dg]). Postoperative lactate was also evaluated. Results: There was no significant change in HR and MABP for all anastomoses, except for MABP during PD grafting (-10.1±2.7 mmHg, P=0.03). There was a significant decrease in ScvO2 only during PD and OM anastomoses (-9.4±0.4, P=0.03; -4.4±0.4, P=0.02; respectively). CVP drop after PD manipulation was strongly associated with a higher lactate during the first hours after surgery (r=-0.82; P=0.001). These hemodynamic changes were transient and entirely recovered after the heart was returned to its anatomical position. No significant differences were observed in FCI, SVV, or the systemic vascular resistance index (SVRI) during all anastomoses, except for a drop in SVRI during PD grafting (-8.03±2.3, P=0.007). SV tended to decrease during the procedure in all territories, but with statistically significant drop only in PD and OM grafting (-10.4±1.2, P=0.02; -13.6±5.1, P=0.007; respectively). Conclusion: Heart displacement for performing aorta no-touch OPCAB is well tolerated, with transient and endurable hemodynamic variations.

https://doi.org/10.21470/1678-9741-2018-0090 665 downloads

Consequences of gestational diabetes to the brain and behavior of the offspring
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SOUSA, RICARDO A.L. DE

; TORRES, YASMIN S.

; FIGUEIREDO, CLAUDIA P.

; PASSOS, GISELLE F.

; CLARKE, JULIA R.

Anais da Academia Brasileira de Ciências

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Ago 2018, Volume 90 Nº 2 Páginas 2279 - 2291

Resumo: En | Texto: En | PDF: En

ABSTRACT Gestational diabetes mellitus (GD) is a form of insulin resistance triggered during the second/third trimesters of pregnancy in previously normoglycemic women. It is currently estimated that 10% of all pregnancies in the United States show this condition. For many years, the transient nature of GD has led researchers and physicians to assume that long-term consequences were absent. However, GD diagnosis leads to a six-fold increase in the risk of developing type 2 diabetes (T2D) in women and incidence of obesity and T2D is also higher among their infants. Recent and concerning evidences point to detrimental effects of GD on the behavior and cognition of the offspring, which often persist until adolescence or adulthood. Considering that the perinatal period is critical for determination of adult behavior, it is expected that the intra-uterine exposure to hyperglycemia, hyperinsulinemia and pro-inflammatory mediators, hallmark features of GD, might affect brain development. Here, we review early clinical and experimental evidence linking GD to consequences on the behavior of the offspring, focusing on memory and mood disorders. We also discuss initial evidence suggesting that downregulation of insulin signaling cascades are seen in the brains of GD offspring and could contribute to the consequences on their behavior.

https://doi.org/10.1590/0001-3765201720170264 3775 downloads

ISOLATION OF CYTOTOXIC NEOLIGNANS FROM Saururus cernuus L. (SAURURACEAE) USING IONIC LIQUID IN THE MICROWAVE ASSISTED EXTRACTION (MAE)
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Brito, Juliana R.

; Camilo, Fernanda F.

; Figueiredo, Carlos R.

; Azevedo, Ricardo A.

; Romoff, Paulete

; Buturi, Fátima O. S.

; Fávero, Oriana A.

; Lago, João Henrique G.

; Ferreira, Edgard A.

Química Nova

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Jul 2018, Volume 41 Nº 7 Páginas 778 - 781

Resumo: En | Texto: En | PDF: En

In the present work, dried leaves of Saururus cernuus (Saururaceae) were subjected to extraction using an ionic liquid (1-butyl-3-methylimidazolium bromide - BMImBr) in the microwave assisted extraction (MAE). The obtained extract was partitioned using n-hexane and cytotoxicity activity of this organic phase against murine melanoma cell line (B16F10-Nex2) was evaluated in vitro. Since this extract displayed activity (100% of cell death at 200 µg mL-1) it was subjected to a bioactivity-guided fractionation to afford four related neolignans: threo-austrobailignan-5 (1), threo-austrobailignan-6 (2), threo-dihydroguaiaretic acid (3) and saucernetin (4). Their chemical structures were established based on NMR and MS spectral analysis. Among the isolated neolignans, compound 2 exhibited the highest cytotoxic activity against HeLa (human cervical melanoma) cells with IC50 of 28.3 ± 3.9 µg mL-1 (86 ± 12 µmol L-1). Furthermore, compounds 2 and 3 exhibited the highest cytotoxic activity against A2058 (human melanoma) cells with IC50 of 44.3 ± 4.2 µg mL-1 (135 ± 13 µmol L-1) and 41.5 ± 7.5 µg mL-1 (126 ± 23 µmol L-1), respectively, similar to positive control cisplatin (IC50 = 43.2 ± 3.2 µg mL-1 or 144 ± 11 µmol L-1). Otherwise, compound 4 was inactive (IC50 > 100 µg mL-1 or > 300 µmol L-1). The obtained results provide important data for the selection of bioactive neolignans with promising cytotoxic potential using a simple and fast method employing a green solvent as 1-butyl-3-methylimidazolium bromide (BMImBr).

https://doi.org/10.21577/0100-4042.20170246 490 downloads

10.

Hydrological modeling of the Ribeirão das Posses - An assessment based on the Agricultural Ecosystem Services (AgES) watershed model
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Cruz, Patrícia Porta Nova da

; Green, Timothy R.

; Figueiredo, Ricardo de Oliveira

; Pereira, Anderson Soares

; Kipka, Holm

; Saad, Sandra Isay

; Silva, Jonathan Mota da

; Gomes, Marco Antonio Ferreira

Revista Ambiente & Água

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Mai 2017, Volume 12 Nº 3 Páginas 351 - 364

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Resumo A recente estiagem no Sudeste do Brasil tem impactado a conservação de bacias hidrográficas e a gestão da qualidade e quantidade da água para as demandas agrícolas e urbanas. A Bacia do Ribeirão das Posses está sendo monitorada por ser uma bacia de cabeceira da Bacia do Rio Jaguari, importante contribuinte do Sistema Cantareira no estado de São Paulo. A paisagem foi alterada no século passado, a partir de florestas nativas para uma vegetação mais homogênea como pastos, campos agrícolas e florestas de eucalipto, que geram impactos cumulativos sobre a quantidade e qualidade da água. Atualmente, o Projeto Conservador das Águas tem restaurado pequenas áreas com vegetação nativa para a recuperação de áreas degradadas. O objetivo dessa pesquisa foi avaliar a quantidade da água na Bacia do Ribeirão das Posses usando dados observados e dados da simulação de respostas hidrológicas. O modelo de bacia “Serviço Agroecossistêmico” (AgES) é aplicado para simular a variação no armazenamento e movimento da água nas áreas terrestres. O período de simulação (2009-2014) foi definido em função da disponibilidade dos dados de vazão e meteorológicos para calibrar e testar o modelo. Dados de entrada requisitados, calibração do modelo para ajuste à vazão medida e a sensibilidade do modelo aos dados de chuva são discutidos neste artigo. O modelo calibrado pode ser utilizado para estimar vazões durante períodos com dados ausentes e, no futuro, para analisar os impactos de mudança de uso da terra sobre a quantidade e qualidade da água. Essas informações podem ser usadas em programas de pagamentos por serviços ambientais.

Abstract Southeastern Brazil has recently experienced drought conditions that have impacted watershed conservation and the management of water quality and quantity for agricultural and urban demands. The Ribeirão das Posses watershed is being monitored as a headwater of the Jaguarí River, which is one of the contributing rivers of the Cantareira Reservoir Complex in the state of São Paulo. The landscape has changed over the last century from native forests to more homogeneous vegetation for pastures, crops and some forest plantations of eucalyptus, which have cumulative impacts on water yield and quality. Currently, the Projeto Conservador das Águas (Water Conservationist Project) has planted small areas with native species vegetation in order to recover degraded areas. The objective of this study was to evaluate the quantity of water in the Ribeirão das Posses Basin by both measurements and by simulating hydrological responses. The Agricultural Ecosystem Services (AgES) watershed model was applied to simulate water movement and storage among land areas. The simulation period was from 2009 to 2014, because the daily streamflow and meteorological data were available for model calibration and testing. We discuss data input requirements, model calibration to fit measured streamflow, and sensitivity to spatially variable rainfall inputs. The calibrated model may be used to estimate streamflow during periods of missing data, and in the future to estimate impacts of land use changes on stream water quantity and quality. Such information can be used in programs of payments for ecosystem services.

https://doi.org/10.4136/ambi-agua.2073 5527 downloads

11.

PERFORMANCE OF DIESEL ENGINE FUELLED WITH FOUR VEGETABLE OILS, PREHEATED AND AT ENGINE WORKING TEMPERATURE
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Delalibera, Hevandro C.

; Johann, André L.

; Figueiredo, Paulo R. A. de

; Toledo, Anderson de

; Weirich Neto, Pedro H.

; Ralisch, Ricardo

Engenharia Agrícola

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Abr 2017, Volume 37 Nº 2 Páginas 302 - 314

Resumo: En | Texto: En | PDF: En

ABSTRACT With the rise of restrictions imposed by law for gases emission, several technologies both for petrodiesel (PD) or diesel engines are been applied, such as the sulfur reduction and the injection electronic command, followed of gases recirculation and/or after-treatment. The utilization of biofuels is considered as an interesting option for pollutants reduction. In this study was evaluated the performance on short duration tests (minor period than the factory indication of the lubricant lifespan) of the Diesel engine fueled with four vegetable oils. With the aim to select the most interesting oils for future evaluations in long duration tests. The analyzed variables were fuel consumption, power relative loss and opacity, for oils of linseed, crambe, rapseed, jatropha , with 100 °C preheating and engine work temperature (60 °C) comparing those with the PD. It was verified that the vegetable oils, on average, present a lower consumption than the PD for the cases of working without load, however with load, they presented higher consumption. In addiction were observed that the oils show a higher relative power loss in relation of PD and provides lower emission of particulate matter. Crambe and canola presented the best performance among the evaluated oils.

https://doi.org/10.1590/1809-4430-eng.agric.v37n2p302-314/2017 1918 downloads

12.

Update of the Brazilian floristic list of Algae and Cyanobacteria
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Menezes, Mariângela

; Bicudo, Carlos E. M.

; Moura, Carlos W. N.

; Alves, Aigara M.

; Santos, Alana A.

; Pedrini, Alexandre de G.

; Araújo, Andréa

; Tucci, Andrea

; Fajar, Aurelio

; Malone, Camila

; Kano, Cecília H.

; Sant'Anna, Célia L.

; Branco, Ciro Z.

; Odebrecht, Clarisse

; Peres, Cleto K.

; Neuhaus, Emanuel B.

; Eskinazi-Leça, Enide

; Aquino, Eveline

; Nauer, Fabio

; Santos, Gabriel N.

; Amado Filho, Gilberto M.

; Lyra, Goia M.

; Borges, Gyslaine C.P.

; Costa, Iara O.

; Nogueira, Ina de S.

; Oliveira, Ivania B.

; Paula, Joel. C.de

; Nunes, José M. de C.

; Lima, Jucicleide C.

; Santos, Kleber R.S.

; Ferreira, Leandro C.

; Gestinari, Lísia M.S.

; Cardoso, Luciana S.

; Figueiredo, Marcia A.O.

; Silva, Marcos H.

; Barreto, Maria B.B.B.

; Henriques, Maria C.O.

; Cunha, Maria da G.G.S.

; Bandeira-Pedrosa, Maria E.

; Oliveira-Carvalho, Maria F.

; Széchy, Maria T.M.

; Azevedo, Maria T.P.

; Oliveira, Mariana C. de

; Cabezudo, Mariê M.

; Santiago, Marilene F.

; Bergesh, Marli

; Fujii, Mutuê T.

; Bueno, Norma C.

; Necchi Jr., Orlando

; Jesus, Priscila B.

; Bahia, Ricardo G.

; Khader, Samir

; Alves-da-Silva, Sandra M.

; Guimarães, Silvia M.P.B.

; Pereira, Sonia M.B.

; Caires, Taiara A.

; Meurer, Thamis

; Cassano, Valéria

; Werner, Vera R.

; Gama Jr., Watson A. da

; Silva, Weliton J. da

Rodriguésia

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2015, Volume 66 Nº 4 Páginas 1047 - 1062

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Resumo Apresenta-se uma síntese atualizada de informações sobre algas no Brasil objetivando refinar os dados reunidos até o presente, bem como avaliar os avanços sobre o conhecimento da diversidade de algas no país desde a publicação do Catálogo de Plantas e Fungos do Brasil. Os resultados de 2015 mostraram um acréscimo de 1.250 espécies (35.7%) a um total de 4.747 em relação a 2010. As classes mais diversas em número de espécies foram Bacillariophyceae, Conjugatophyceae, Florideophyceae, Cyanophyceae, Dinophyceae e Euglenophyceae. Bacillariophyceae e Cyanophyceae tiveram o maior acréscimo de espécies no intervalo de cinco anos. A região Sudeste e Sul foram as mais diversas, porém, as regiões Nordeste com os estados do Piauí e Sergipe e Centro-Oeste com os estados de Mato Grosso, Goiás e Distrito Federal destacaram-se no cenário da biodiversidade nacional. Apesar da escassez de taxonomistas e da infraestrutura limitada, os resultados obtidos evidenciaram um avanço significativo no conhecimento da diversidade de algas no país nesse período de cinco anos, iniciando uma mudança quanto as diferenças geográficas regionais.

Abstract An updated synthesis of cyanobacteria and algae information is presented for Brazil aiming to refine the data gathered to date and evaluate the progress of the biodiversity knowledge about these organisms in the country since the publication of the Catálogo de Plantas e Fungos do Brasil. The results of 2015 showed an increase of 1,250 species (35.7%) when compared to 2010, reaching a total of 4,747 species. The most diverse classes in species number were the Bacillariophyceae, Conjugatophyceae, Florideophyceae, Cyanophyceae, Dinophyceae and Euglenophyceae. Bacillariophyceae and Cyanophyceae had the highest increase in species number in the five-year interval. The Southeast and South regions were the most diverse, however, the Northeast, with the states of Piauí and Sergipe, and the Central-west region, with Mato Grosso, Goiás and Distrito Federal, also stood out in the national algal biodiversity scenario. Despite the shortage of taxonomists and limited infrastructure, the results showed a significant improvement in the knowledge regarding the diversity of cyanobacteria and algae in the country during the study period, starting to even out regional geographical differences caused by subsampling.

https://doi.org/10.1590/2175-7860201566408 4865 downloads

13.

Chuvas intensas para o estado de Sergipe com base em dados desagregados de chuva diária
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Aragão, Ricardo de

; Santana, Geizon R. de

; Costa, Clarissa E. F. F. da

; Cruz, Marcus A. S.

; Figueiredo, Eduardo E. de

; Srinivasan, Vajapeyam S.

Revista Brasileira de Engenharia Agrícola e Ambiental

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Mar 2013, Volume 17 Nº 3 Páginas 243 - 252

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

A freqüência de inundações tem crescido em diversas partes do Brasil e do mundo, como conseqüência de impactos antrópicos ou de mudanças climáticas. Para mitigar os efeitos das inundações, obras hidráulicas são projetadas com vazão de projeto que pode ser determinada através do emprego de estatística aplicada a séries históricas de vazão ou de precipitação, via equação de chuvas intensas (IDF). Para a determinação da IDF são utilizados dados pluviográficos ou dados pluviométricos diários desagregados. Dada à escassez, no Estado de Sergipe, de dados pluviográficos como também de equações IDF foram desenvolvidas, neste trabalho, as equações IDF para todo o Estado, utilizando-se dados de chuva diária de 48 postos, desagregados com base em fatores de proporcionalidade, além das distribuições de Weibull e Gumbel. Obtiveram-se os melhores resultados com a distribuição de Weibull. A espacialização dos parâmetros da função IDF evidenciou a grande variabilidade das precipitações no Estado de Sergipe.

Floods have frequently been observed worldwide, particularly in urban and rural areas of Brazil as a consequence of antropic impacts and climate change. To cope with the problem hydraulic structures are designed based on the observed maximum flood, or statistically predicted through the rainfall-duration relationship established with recorded data, which are generally scarce. Due to the lack of such data, disaggregation of daily rainfall is generally utilized. In the State of Sergipe-Brazil, the rainfall-duration relationships were established utilizing disaggregated daily rainfalls, observed in 48 stations, and the probability distributions of Weibull and Gumbel. The best results were obtained with the Weibull distribution. The spatial distributions of the parameters of the rainfall-duration relationships demonstrated the high rainfall variability in the region.

7089 downloads Citado 7 vezes em SciELO

14.

Veliidae (Insecta, Heteroptera, Gerromorpha) from southeastern Brazil: three new species from Rio de Janeiro State, a new species group for Neotropical Rhagovelia Mayr, and notes on distribution and synonymy
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Moreira, Felipe Ferraz Figueiredo

; Barbosa, Julianna Freires

; Ribeiro, José Ricardo Inacio

Revista Brasileira de Entomologia

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Jun 2012, Volume 56 Nº 2 Páginas 147 - 158

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Microvelia nelsoni sp. nov., M. takiyae sp. nov. e Rhagovelia mangaratiba sp. nov. são descritas. Rhagovelia scitula e R. whitei são transferidas do grupo robusta para o novo grupo whitei. Rhagovelia denticulata é sinonimizada com R. scitula. Microvelia longipes, Oiovelia brasiliensis, Rhagovelia sooretama, R. trianguloides, R. vaniniae e Stridulivelia quadrispinosa são registradas pela primeira vez no Estado do Rio de Janeiro. Ocorrências adicionais novas no Estado do Rio de Janeiro são apresentadas para Microvelia braziliensis, M. ioana, M. mimula, M. pulchella, Paravelia basalis, P. itatiayana, Rhagovelia accedens, R. agra, R. aiuruoca, R. elegans, R. hambletoni, R. henryi, R. itatiaiana, R. lucida, R. macta, R. modesta, R. novana, R. scitula, R. tenuipes, R. tijuca, R. triangula e R. zela. Correções acerca das distribuições de Rhagovelia aiuruoca, R. lucida, R. macta e R. triangula são apresentadas.

Microvelia nelsoni sp. nov., M. takiyae sp. nov., and Rhagovelia mangaratiba sp. nov. are described. Rhagovelia scitula and R. whitei are transferred from the robusta group to the new whitei group. Rhagovelia denticulata is synonymized under R. scitula. Microvelia longipes, Oiovelia brasiliensis, Rhagovelia sooretama, R. trianguloides, R. vaniniae, and Stridulivelia quadrispinosa are recorded for the first time from Rio de Janeiro State. Additional new municipality records in Rio de Janeiro State are presented for Microvelia braziliensis, M. ioana, M. mimula, M. pulchella, Paravelia basalis, P. itatiayana, Rhagovelia accedens, R. agra, R. aiuruoca, R. elegans, R. hambletoni, R. henryi, R. itatiaiana, R. lucida, R. macta, R. modesta, R. novana, R. scitula, R. tenuipes, R. tijuca, R. triangula, and R. zela. Corrections are presented for the previously published distributions of Rhagovelia aiuruoca, R. lucida, R. macta, and R. triangula.

3556 downloads Citado 1 vez em SciELO

15.

Atresia congênita do tronco da coronária esquerda em adulto jovem: rara e potencialmente fatal anomalia coronária
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Freitas, Leandro Zacarias Figueiredo de

; Centemero, Marinella

; Costa, Ricardo

; Costa Jr., J. Ribamar

; Feres, Fausto

; Paulista, Paulo Paredes

; Nakashima, Marcelo

; Obregon, Javier

; Kelendjian, Juliana F.

; Maranhão, Andréia

; Pinto, Ibraim Masciarelli

; Abizaid, Alexandre

; Sousa, Amanda G. M. R.

; Sousa, J. Eduardo

Revista Brasileira de Cardiologia Invasiva

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Jun 2011, Volume 19 Nº 2 Páginas 208 - 211

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Relato do caso de paciente do sexo masculino, 35 anos de idade, com atresia congênita do tronco da artéria coronária esquerda, afecção extremamente rara e com poucos casos descritos na literatura. Nessa afecção, o óstio da coronária esquerda está ausente, o tronco da coronária esquerda termina em fundo cego e o fluxo sanguíneo se dá da coronária direita para a esquerda por pequenas artérias colaterais e retrogradamente. O diagnóstico diferencial envolve outras malformações congênitas (artéria coronária direita única e origem anômala da artéria coronária esquerda do tronco da artéria pulmonar) e doença aterosclerótica adquirida do tronco da coronária esquerda.

We report the case of a 35-year-old male patient with congenital atresia of the left main coronary artery, a rare disease with few cases reported in the literature. In this anomaly, the left coronary ostium is absent, the proximal left main trunk ends blindly and blood flow is retrograde from the right to the left coronary artery by small collateral arteries. Differential diagnosis includes other congenital malformations (single right coronary artery and anomalous origin of the left coronary artery from the pulmonary artery) and acquired atherosclerotic disease of the left main coronary artery.

3893 downloads

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