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Journal of Water Resource and Protection 2014年第1期6卷 8-15页

作者： Rodrigo N.Millan lúcia h.sipaúba-tavares Fernanda Travaini-lima Aquaculture Center University of Sao Paulo StateJaboticabalBrazil Federal University of Sao Carlos Sao CarlosBrazil

Environmental pressure, land utilization, and economic feasibility have resulted in the development of alternatives to treatment fish farm wastewater. We examined the influence of two water treatment systems—a constructed wetland (CW) and a soil filter system (SF)—on the constitution of the phytoplankton community analyzed through the functional grouping of species and nutrients removal of aquaculture farm. The CW provided high removal efficiency: 82.9% for ammonia, 87.0% for nitrate, 96.9% for nitrite, 85.5% for total phosphorus, 88.5% for SRP and 71.6% for BOD. Removal efficiency of SF was lower than CW, removing 82.1% of ammonia, 7.2% of total phosphorus, 45.9% of SRP and 39.4% of nitrite, but was satisfactory. The functional group F, made up of Chlorophyceae Dictyosphaerium pulchellum and Kirchneriella lunaris, was the most representative in both systems, followed by functional group P and constituted by Zygnemaphyceae Melosira sp. The number of functional groups decreased in the outlet of the two treatment systems, where S1, h1 and W1, characteristic of eutrophic environment, were retained. Data show that CW and the SF system are potentially applicable to the fish farm wastewater treatment and ensure an improvement in water quality.

关键词： Wastewater Treatment Microalgae Removal Efficiency Functional Groups

Influence of Management on the Water Quality and Sediment in Tropical Fish Farm

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Journal of Water Resource and Protection 2013年第5期5卷 495-501页

作者： lúcia h.sipaúba-tavares Rodrigo N.Millan Atanásio A.do Amaral Aquaculture Center University of Sao Paulo StateJaboticabalBrazil Federal Institute of Espirito Santo—Ifes AlegreBrazil

A seven-month research evaluated the management effect on the water quality and sediment of seven fish ponds. Water and sediment were collected at nine sample sites: seven in the fish ponds;one in inlet water and another in the fish farm’s effluent. The soil samples were analyzed for macro- and micro-nutrients and the water samples were analyzed for physical and chemical parameters. Management and local climate conditions affected nutrient seasonality in the sediment and featured high concentrations of Al, Ca, Cu, K, Mg, C, Na, Zn and OM at the effluent with low ph, ranging between 4.4 and 6.5. Sudden decrease of DO (less than 3 mg/l) during the rainy season, with a 180 mmrainfall, and a TSS increase (approximately 10 mg/l) were reported. Use of organic manure in fish pond V6 caused higher rates of ammonia (over 1 mg/l). Due to the sediment’s acid ph (less than 4.8) and Al at 0.92 mg/l at the effluent, great care was required in the fish farm. Maintenance and procedures management in the fish farm under analysis should be given more attention since high levels of Al, Fe and acid ph and low levels of potassium and phosphorus in the sediment may produce unfavorable conditions in the water column, and may ultimately have an impact on fish.

关键词： Water Quality Fish Ponds Management Sediment

Addressing soil protection concerns in forest ecosystem management under climate change

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Forest Ecosystems 2020年第3期7卷 432-442页

作者： Ana Raquel Rodrigues Brigite Botequim Catarina tavares Patrícia Pécurto JoséGBorges Forest Research Centre School of AgricultureLisbon UniversityTapada da Ajuda1349-017LisbonPortugal

background: Climate change may strongly influence soil erosion risk, namely through variations in the precipitation pattern. Forests may contribute to mitigate the impacts of climate change on soil erosion and forest managers are thus challenged by the need to define strategies that may protect the soil while addressing the demand for other ecosystem services. Our emphasis is on the development of an approach to assess the impact of silvicultural practices and forest management models on soil erosion risks under climate change. Specifically, we consider the annual variation of the cover-management factor(C) in the Revised Universal Soil loss Equation over a range of alternative forest management models to estimate the corresponding annual soil losses, under both current and changing climate conditions. We report and discuss results of an application of this approach to a forest area in Northwestern Portugal where erosion control is the most relevant water-related ecosystem ***: local climate change scenarios will contribute to water erosion processes, mostly by rainfall erosivity *** forest management models provide varying levels of soil protection by trees, resulting in distinct soil loss ***: Results confirm the suitability of the proposed approach to address soil erosion concerns in forest management planning. This approach may help foresters assess management models and the corresponding silvicultural practices according to the water-related services they provide.

关键词： C-factor Erosivity Ecosystem services Forest management Revised universal soil loss equation(RUSlE)

lithic soils in the semi-arid region of Brazil:edaphic characterization and susceptibility to erosion

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Journal of Arid land 2022年第1期14卷 56-69页

作者： Carlos R PINhEIRO JUNIOR Conan A SAlVADOR Tiago R tavares Marcel C ABREU hugo S FAGUNDES Wilk S AlMEIDA Eduardo C SIlVA NETO lúcia h C ANJOS Marcos G PEREIRA Federal Rural University of Rio de Janeiro(UFRRJ) Department of SoilsSeropédicaRio de Janeiro 23890Brazil Center for Nuclear Energy in Agriculture(CENA) University of São Paulo(USP)PiracicabaSão Paulo 13416Brazil Federal Institute of Education Science and Technology of Rondônia(IFRO)Rural ZoneAriquemesRondônia 78930Brazil

Soils(leptosols or Epileptic Regosols)with lithic contact at a depth of 50 cm occupy almost 20%of the Brazilian semi-arid *** lithic soils are susceptible to erosion due to faster saturation of water-holding capacity during rainfall,which accelerates the beginning of ***,erosion traits of lithic soils in the semi-arid region of Brazil are less *** aim of this study was to characterize the soil and landscape attributes in areas with Neossolos litólicos(Entisols)in the Caatinga biome to identify region of high susceptibility to *** showed that the soils were characterized by a sandy texture,soil structure with poor development and low content of organic *** attributes increase susceptibility to erosion and reduce water storage capacity,especially in the states of Cearáand *** these states,the content of rock fragments in the soil reaches 790 g/*** contents of silt and fine sand,high silt/clay ratio,predominance of leptosols and strong rainfall erosivity were observed in Piauíand northwestern Ceará.A very high degree of water erosion was observed in the states of Pernambuco and Paraí*** the low degree of erosion observed in the state of bahia,it is highly susceptible to erosion due to the predominance of very shallow soils,rugged relief and high values of rainfall *** vulnerability was observed in the state of Alagoas because of its more smoothed relief,greater effective soil depth,thicker A horizon of soil and lower rainfall *** general,the characteristics that intensify the susceptibility to erosion in the Caatinga biome are those soil structures with poor development or without aggregation,low contents of organic carbon,high contents of silt and fine sand,high values of silt/clay ratio and rugged relief in some *** study collected information contributing to a better characterization of soils with lithic contact in the semi-arid region of *** addition,regions with

关键词： Caatinga biome drylands erosive processes leptosols soil degradation

Antioxidants Enzymes Activities and NO levels in hemodialysis and Continuous Ambulatory Peritoneal Dialysis—A Comparative Study

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Journal of Biosciences and Medicines 2024年第2期12卷 50-59页

作者： Natalia Cristina Aparecida Ribeiro e Ribeiro Anderson Martins tavares Jaslana hainfellner da Silva João Paulo lima Daher Salim Kanaan luciene de Carvalho Cardoso-Weide laboratory of Neuroplasticity Neurobiology Department Biology Institute Federal Fluminense University Rio de Janeiro Brazil Postgraduate Program in Medical Sciences School of Medicine Federal Fluminense University Rio de Janeiro Brazil School of Biology UNIVERSO—Salgado de Oliveira University Rio de Janeiro Brazil Department of Pathology Faculty of Medicine Federal Fluminense University Rio de Janeiro Brazil

It consists of a retrospective study with twenty-two individuals diagnosed with DRC: fourteen hD and eight CAPD, followed up in the dialysis center of Antonio Pedro University hospital (hUAP) of Fluminense Federal University (UFF), between 2015 and 2017. Fifteen healthy control (hC) subjects were included, without diagnosed CKD. Patients with hIV positive, hepatitis A, B, and C, pregnant, cancer, smokers, alcoholics and those exposed to X-rays in the last 3 months, were excluded. Objectives: As oxidative stress and endothelial dysfunction may be linked to the higher prevalence of CVD in CKD patients, we measured the activities of the antioxidants enzymes: SOD and GPx and total NO levels in the plasma and serum of end-stage CKD patients undergoing dialysis therapy, comparing with the hC group. Methods: Quantification of NO levels was performed by fluorometric kit, while activities of SOD and GPx were determined using kinetic methods. Results: We found higher plasma SOD activity in hD (8.58 U/ml) and CAPD (10.14 U/ml), compared to C (3.73 U/ml) group, while GPx activity was decreased in hD (115.38 nmol/h/ml) and CAPD (122.76 nmol/h/ml) groups compared to hC group (275.83 nmol/h/ml). Total serum NO concentration was decreased in hD (14.09 pmol/μl) and CAPD (10.26 pmol/μl), compared to non-CKD patients (49.65 pmol/μl). Conclusion: Decreased total serum NO and GPx activities may lead to endothelial dysfunction and consequently a higher prevalence of CVD in CKD patients.

关键词： hemodialysis CAPD SOD GPx NO

Chromomagnetic and chromoelectric dipole moments of quarks in the reduced 331 model

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Chinese Physics C 2021年第11期45卷 11-24页

作者： A.I.hemandez-Juarez G.tavares-Velasco A.Moyotl Facultad de Ciencias Fisico Matematicas Benemerita Universidad Autonoma de PueblaApartado Postal 1152PueblaPueblaMexico Ingenieria en Mecatronica Universidad Politecnica de PueblaTercer Carril del Ejido Serrano s/nSan Mateo CuanalaJuan C.BonillaPueblaPueblaMexico

The one-loop contributions to the chromomagnetic dipole momentˆμt(q2)and electric dipole momentˆd t(q2)of the top quark are calculated within the reduced 331 model(RM331)for non-zero *** is argued that the results are gauge independent and thus represent valid observable *** the RM331,ˆμt(q2)receives new contributions from two heavy gauge bosons,namely Z′and V±,and one neutral scalar boson h2,along with a new contribution from the standard model's higgs boson via flavor changing neutral *** latter,which is also mediated by the Z′gauge boson and the scalar boson h2,can provide a non-vanishingˆd t(q2)if there is a CP-violating *** analytical results are presented in terms of both Feynman parameter integrals and Passarino-Veltman scalar functions,which are useful to cross-check the numerical ***ˆμt(q2)andˆd t(q2)are numerically evaluated for parameter values still allowed by the constraints from experimental *** is found that the new one-loop contributions of the RM331 to the real(imaginary)part ofˆμt(q2)are of the order of 10−5(10−6),which means at least three orders of magnitude smaller than the standard model prediction but larger than the predictions of other models of new *** the RM331,the dominant contribution arises from the V±gauge boson for‖q‖in the 30-1000 GeV interval and a mass mV of the order of a few hundreds of *** forˆd t(q2),it receives its largest contribution from h2 exchange and can reach values of the order of 10−19,i.e.,smaller than the contributions predicted by other standard model extensions.

关键词： chromomagnetic chromoelectric 331 models

Aerodynamic Effects Compensation on Multi-Rotor UAVs based on a Neural Network Control Allocation Approach

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IEEE/CAA Journal of Automatica Sinica 2022年第2期9卷 295-312页

作者： Sarah P.Madruga Augusto h.B.M.tavares Saulo O.D.luiz Tiago P.do Nascimento Antonio Marcus N.lima Graduate Program of Electrical Engineering Universidade Federal de Campina GrandeCampina Grande-PBBrazil Department of Electrical Engineering Universidade Federal de Campina GrandeCampina Grande-PBBrazil IEEE Department of Computer Systems Universidade Federal da ParaibaJoao Pessoa-PBBrazil

This paper shows that the aerodynamic effects can be compensated in a quadrotor system by means of a control allocation approach using neural ***,the system performance can be improved by replacing the classic allocation matrix,without using the aerodynamic inflow equations *** network training is performed offline,which requires low computational *** target system is a Parrot MAMBO drone whose flight control is composed of PD-PID controllers followed by the proposed neural network control allocation *** a quadrotor is particularly susceptible to the aerodynamics effects of interest to this work,because of its small *** compared the mechanical torques commanded by the flight controller,i.e.,the control input,to those actually generated by the actuators and established at the *** was observed that the proposed neural network was able to closely match them,while the classic allocation matrix could not achieve *** allocation error was also determined in both ***,the closed-loop performance also improved with the use of the proposed neural network control allocation,as well as the quality of the thrust and torque signals,in which we perceived a much less noisy behavior.

关键词： Aerodynamics effects control allocation minidrone multi-rotor UAV neural networks

Effect of climate and altitude on plant community composition and richness in Brazilian inselbergs

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Journal of Mountain Science 2020年第8期17卷 1931-1941页

作者： herval Vieira PINTO-JUNIOR Pedro Manuel VIllA luis Fernando tavares de MENEZES Miriam Cristina Alvarez PEREIRA Universidade Federal de Vigosa Department of Plant BiologyLaboratory of Ecology and Evolution of Plants36570-900Vicosa-MGBrazil Universidade Federal de Vigosa Department of Forest EngineeringLaboratory of Forest Restoration36570-900Vicosa-MGBrazil Universidade Federal do Espirito Santo Department of Agrarian and Biological SciencesLaboratory of Ecology of Restinga and Mata Atlantica29932-900Sao Mateus-ESBrazil Universidade Federal do Espirito Santo Department of Biology29500-000Alegre-ESBrazil

Plant communities are shaped by multiple factors along environmental gradients;however,studies are limited on how environmental filtering drives community composition and species richness on tropical *** evaluate the influence of altitude and climatic variables related to temperature and precipitation on plant community composition and species richness on Brazilian *** assume as a premise that both climate and altitude would induce changes on plant community composition and species richness at the local *** used plant inventory data from 370 sampling units across four inselberg sites in the Atlantic Forest of Espírito Santo State,south-eastern *** tested the univariate and multivariate effects of altitude and climate variables on community composition and species richness with multiple *** in species richness between inselbergs were evaluated using sample-based data to estimate rarefaction and extrapolation *** addition,differences in species composition and taxonomic beta diversity were examined via novel frequency-based metrics.A contrasting climate pattern was observed between the inselberg sites,with south sites being wet compared to the dry conditions found in northern *** richness by rarefaction showed a similar pattern within regional sites;however,there were marked differences between *** richness and beta diversity showed significant differences among sites,with higher values in southern sites than in northern *** a multi-model comparison between inselberg sites,altitude significantly influenced community composition and species richness and explained more variance than climate *** finding suggested that climate could act to some extent on these tropical inselbergs;however,altitude was a better predictor of plant community composition and species richness at the local level.

关键词： Atlantic Forest Biome Beta diversity Abiotic filtering Climate models Environmental filtering latitudinal gradient

Should pediatric idiopathic hypercalciuria be treated with hypocalciuric agents?

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World Journal of Nephrology 2021年第4期10卷 47-58页

作者： Maria Goretti Moreira Guimarães Penido Marcelo de Sousa tavares Pediatric Nephrology Unit Nephrology Center of Santa Casa de Belo HorizonteBelo Horizonte 30150320Minas GeraisBrazil Federal University of Minas Gerais Faculty of MedicineDepartment of PediatricsPediatric Nephrology UnitBelo Horizonte 30130100Minas GeraisBrazil

baCKGROUND hypercalciuria is the most common metabolic risk factor for calcium urolithiasis and is associated with bone loss in adult *** bone mineral density(BMD)was already described in idiopathic hypercalciuria(Ih)children,but the precise mechanisms of bone loss or inadequate bone mass gain remain ***-long hypercalciuria might be considered a risk to change bone structure and determine low bone mass throughout *** peak of bone mass should occur without interferences.A beneficial effect of citrate formulations and thiazides on bone mass in adult and pediatric patients with Ih have been *** To evaluate whether pharmacological therapy has a beneficial effect on bone mass in children and adolescents with *** This retrospective cohort study evaluated 40 hypercalciuric children nonresponsive to lifestyle and diet *** a 2-mo run-in period of citrate formulation(Kcitrate)usage,the first bone densitometry(DXA)was *** patients with sustained hypercalciuria,a thiazide diuretic was *** second DXA was performed after 12 *** densitometry was performed by DXA at lumbar spine(l2-l4).A 24-h urine(calcium,citrate,creatinine)and blood samples(urea,creatinine,uric acid,calcium,phosphorus,magnesium,chloride,hemoglobin)were *** data included age,gender,weight,height and body mass *** Forty Ih children;median age 10.5 year and median time follow-up 6.0 year were *** patients were treated with Kcitrate(G1)and 31 with Kcitrate+thiazide(G2).There were no differences in age,gender,body mass index z-score and biochemical parameters between G1 and *** were no increases in total cholesterol,kalemia and *** decreased in both groups after *** spine BMD z-score increased after thiazide treatment in *** was no improvement in *** Results point to a beneficial effect of thiazide on lumbar spine BMD z-score in children with *** studies ar

关键词： Children Adolescent hypercalciuria Bone mineral density Thiazides Citrate

Papillary fistulotomy vs conventional cannulation for endoscopic biliary access:A prospective randomized trial

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World Journal of Gastroenterology 2018年第16期24卷 1803-1811页

作者： Carlos Kiyoshi Furuya Paulo Sakai Fabio Ramalho tavares Marinho Jose Pinhata Otoch Spencer Cheng lívia lemes Prudencio Eduardo Guimaraes hourneaux de Moura Everson luiz de Almeida Artifon Department of Gastrointestinal Endoscopy Unit University of Sao PauloSao Paulo 05409001Brazil Department of Surgery University of Sao PauloSao Paulo 05403000Brazil Department of Gastroenterology and Radiology University of Sao PauloSao Paulo 04107-030Brazil

AIM To compare the cannulation success, biochemical profile, and complications of the papillary fistulotomy technique vs catheter and guidewire standard *** From July 2010 to May 2017, patients were prospectively randomized into two groups: Cannulation with a catheter and guidewire(Group Ⅰ) and papillary fistulotomy(Group Ⅱ). Amylase, lipase and C-reactive protein at T0, as well as 12 h and 24 h after endoscopic retrograde cholangiopancreatography, and complications(pancreatitis, bleeding, perforation) were *** We included 102 patients(66 females and 36 males, mean age 59.11 ± 18.7 years). Group Ⅰ and Group Ⅱ had 51 patients each. The successful cannulation rates were 76.5% and 100%, respectively(P = 0.0002). Twelve patients(23.5%) in Group Ⅰ had a difficult cannulation and underwent fistulotomy, which led to successful secondary biliary access(Failure Group). The complication rate was 13.7%(2 perforations and 5 mild pancreatitis) vs 2.0%(1 patient with perforation and pancreatitis) in Groups Ⅰ and Ⅱ, respectively(P = 0.0597). CONClUSION Papillary fistulotomy was more effective than guidewire cannulation, and it was associated with a lower profile of amylase and lipase. Complications were similar in both groups.

关键词： Catheterization Complications Endoscopic retrograde cholangiopancreatography Therapeutic use Common bile duct