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Bioremediation Potential of the Macroalga Ulva lactuca (Chlorophyta) for Ammonium Removal in Elastomer Industry Wastewater

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Advances in Bioscience and Biotechnology 2024年第6期15卷 325-343页

作者： Diego Lelis Alex Enrich-Prast Camille R. chaves Thuane Mendes Anacleto Roberta R. C. Pereira Vinicius P. de oliveira Programa de Ps-Graduao em Biotecnologia Vegetal e Bioprocessos Universidade Federal do Rio de Janeiro Rio de Janeiro Brazil Unidade Multiusurio de Anlises Ambientais Universidade Federal do Rio de Janeiro Rio de Janeiro Brazil Institute of Marine Science Federal University of So Paulo (IMar/UNIFESP) Santos Brazil department of Thematic StudiesEnvironmental Change and Biogas Solutions Research Center (BSRC) Linkping University Linkping Sweden department of Marine Biology Institute of Biology Federal University of Rio de Janeiro Rio de Janeiro Brazil

During the production of nitrile rubber, significant amounts of nitrogen in the form of ammonium are generated in the wastewater. The discharge of this high-nitrogen wastewater can lead to serious environmental issues, including eutrophication, disruption of aquatic ecosystems, and groundwater contamination. To mitigate these impacts, this research explored the bioremediation capabilities of the macroalgae Ulva lactuca (Chlorophyta) for removing nitrogen from nitrile rubber production wastewater. The study employed single-phase and Michaelis-Menten decay models based on ammonium consumption, using various dilutions of wastewater to identify the optimal concentration for treatment. The physiological state of the macroalgae was monitored by measuring the photosynthetic capacity and specific growth rate during the experiments. In the presence of U. lactuca, ammonium concentrations decreased in all treatment groups, confirming that the ammonium kinetics conformed to both applied models. Our results show that U. lactuca effectively reduces ammonium concentrations, with an approximate removal rate of 0.020 µM·g−1·min−1 across different wastewater concentrations (70%, 80%, 90%, and 100%). Notably, the treatments with 70%, 80%, and 90% wastewater strength achieved about 67% reduction in ammonium, demonstrating the alga’s capacity to treat high-nitrogen wastewater. The photosynthetic performance of U. lactuca initially declined in control conditions but stabilized across all treatments, highlighting its adaptability. The kinetic analysis using the Michaelis-Menten model indicated a Vmax of 1342 μM·g−1·DMh−1, suggesting a robust capacity for ammonium uptake when fully saturated. Our study underscores the potential of Ulva lactuca as a cost-effective and efficient agent for wastewater bioremediation, particularly in settings with high nitrogen loads.

关键词： Photosynthetic Quantum Yield One-Phase decay Model Michaelis-Menten Model Nitrogen Physiological Parameters Elastomers

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Calibration and validation of FAO-AquaCrop model to estimate the total biomass and yacon root yield

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International Journal of Agricultural and Biological Engineering 2020年第3期13卷 123-128页

作者： Ramon Amaro de Sales Alexandre Cândido Xavier evandro chaves.de oliveira Fábio Luiz de oliveira Diego Mathias Natal da Silva Sávio da Silva Berilli departament of Plant Science Federal University of ViçosaMinas GeraisBrazil Center of Agrarian Sciences and Engineering Federal University of Espirito SantoEspírito SantoBrazil Federal Institute of Education Science and Technology of Espírito Santo-Campus ItapinaEspírito SantoBrazil Federal Institute of Education Science and Technology of Southeast Minas Gerais-Campus ManhuaçuMinas GeraisBrazil

Due to the current water scarcity in the world,it is extremely important to improve the use of this natural and exhaustible resource in agriculture,by contributing to increase agricultural production and *** models of crop growth simulation were developed to predict the edaphoclimatic effects on crop *** models are calibrated and validated for a given region using the data generated from field ***,the objective of this study was to calibrate and validate the FAO AquaCrop model for yacon(Smallanthus sonchifolius)crop in a tropical *** experiment was conducted in an experimental area located in the municipality of Ibatiba,state of Espírito Santo(Brazil)during the years of 2013 and *** calibration was done using the Autumn planting and validation with the Winter and Spring *** the statistical analysis,the coefficient of determination,Willmott concordance index,bias for the systematic error,root mean square error and the mean absolute error to test the model performance were *** general,the FAO AquaCrop model predicted the root yield,total biomass and harvest index with acceptable accuracy,and with deviations of less than 6%for total and root *** planting of yacon showed a reduction in yield as well as total biomass.

关键词： Smallanthus sonchifolius root yield simulation modelling agrometeorology

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determination of runoff coefficient(C)in catchments based on analysis of precipitation and flow events

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International Soil and Water Conservation Research 2022年第2期10卷 208-216页

作者： Ronalton evandro Machado Tais oliveira Cardoso Matheus Henrique Mortene Unicamp(University of Campinas)-College of Technology LimeiraSPBrazil

Runoff coefficient(C)values are tabulated and enshrined in hydrological *** values are considered to be constant although they may not correspond to *** the same catchment,they may vary according to intensity,temporal and spatial distribution of precipitation events,humidity condi-tions,soil and land *** study aimed to analyze extreme events of precipitation and their corre-sponding flows to obtain experimental runoff coefficients(C)and compare them with the tabulated *** study was conducted in five experimental catchments in the state of S~ao Paulo,Brazil,with different land *** runoff coefficients(C)were obtained from the analysis of hydrograms and using a digital filter,which made it possible to separate the direct runoff from the total *** observed a different variation in runoff coefficient values between catchments compared to those obtained from the *** runoff coefficients had a high correlation with land *** catchments with original vege-tation cover,such as Cerrado and forest,they varied little among the events analyzed,unlike the catchments where land use is diversified,with predominantly agricultural and urban occupation.

关键词： Digital filter Hydrograms Hydrology Land use Watershed

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Bioremediation Potential of the Macroalga Ulva lactuca (Chlorophyta) for Ammonium Removal in Elastomer Industry Wastewater

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Advances in Bioscience and Biotechnology（生命科学与技术进展） 2024年第6期 325页

作者： Diego Lelis Alex Enrich-Prast Camille R.chaves Thuane Mendes Anacleto Roberta R.C.Pereira Vinicius P.de oliveira

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Preservation of platelet function in patients with cirrhosis and thrombocytopenia undergoing esophageal variceal ligation

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Hepatobiliary & Pancreatic Diseases International 2020年第6期19卷 555-560页

作者： evandro de oliveira Souza Elbio Antonio D’Amico Tania Rubia Flores da Rocha Caroline Marcondes Ferreira Juliana Medeiros Batista Luiz Augusto CarneiroD’Albuquerque Flair Jose Carrilho Alberto Queiroz Farias Division of Gastroenterology and Hepatology University of Sao Paulo School of MedicineAv.Dr.Eneas Carvalho de Aguiar2559th flooroffice 9159Sao PauloSP 05403-000Brazil Hemostasis Laboratory Hematology ServiceUniversity of Sao Paulo School of MedicineAv.Dr.Eneas Carvalho de Aguiar2552nd floorSao PauloSP 05403-000Brazil

Background:Thrombocytopenia is a possible risk factor for bleeding after band ligation of esophageal ***,elevated von Willebrand factor(VWF)in cirrhosis improves platelet function and could decrease this *** objective was to assess platelet function in patients with cirrhosis undergoing esophageal variceal ligation(EVL).Methods:The assessment consisted of platelet count,antigen and activity of VWF and VWF-cleaving protease ADAMTS-13 activity,and a platelet adhesion and aggregation test simulating vascular flow in vivo(Impact-RR)prior to ***:Totally 111 patients were divided into three groups according to platelet count:(1)100×109/L(n=26,23.4%).No statistically significant difference was found in the aggregate size of platelets[group 1:41.0(31.8–67.3)μm 2;group 2:47.0(33.8–71.3)μm 2;and group 3:47.0(34.0–66.0)μm 2;P=0.60]and no significant correlation was found between aggregate size and platelet count(Spearman r=0.07;P=0.47).Surface coverage was 4.1%(2.8%–6.7%),8.5%(4.0%–10.0%),and 9.0%(7.1%–12.0%)(Pdemonstrated for platelet function ***:Platelet function is preserved even in the presence of thrombocytopenia,including in the patients with post-EVL bleeding.

关键词： Cirrhosis Hemostasis Thrombocytopenia Platelet aggregation Endoscopy Hemorrage

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Modeling unmanned aerial vehicle system for identifying foci of arboviral disease with monitoring system

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International Journal of Modeling, Simulation, and Scientific Computing 2022年第3期13卷 98-120页

作者： John David S.Belem Hidalyn Theodory C.M.Souza Alvaro Sobrinho Lenardo chaves E.Silva Helder Fernando de Araujo oliveira Federal Rural University of the Semiarid BR-233s/n Cara´ubasRio Grande do Norte 59780-000Brazil Federal Rural University of the Semiarid BR-226s/n Pau dos FerrosRio Grande do Norte 59900-000Brazil Federal University of the Agreste of Pernambuco Avenida Bom Pastor s/nGaranhuns Pernambuco 55292-270Brazil

People who live in low-income and hard-to-reach regions are usually the most affected ones by high incidences of arboviral diseases,increasing morbidity and mortality rates,and public health *** present the modeling of hardware and software components of an unmanned aerial vehicle(UAV)system by mathematical tools,focusing on monitoring foci of arboviral diseases transmitted by Aedes aegypti mosquito,e.g.,Zika,Chikungunya,and *** used restriction equations and the colored Petri nets formal modeling language to represent the flight dynamics and the software components of the system,*** evaluated the specification of desired behaviors of the monitoring system using simulations and the model checking *** results showed the completeness and correctness of the *** design of such a system is challenging due to the potential risks to people and the ***,this study provides insights into the development of an UAV system for such an application *** monitoring system has the potential of improving the efficiency in identifying foci of arboviral diseases.

关键词： System modeling unmanned aerial vehicle colored Petri nets flight dynamics arboviral diseases

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Distribution of trace metals and Pb isotopes in bottom sediments of the Murucupi River,North Brazil

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International Journal of Sediment Research 2016年第3期31卷 226-236页

作者： Diomar Cavalcante oliveira Jean Michel Lafon Marcelo de oliveira Lima Institute of Geosciences Federal University of Pára Environmental Section Evandro Chagas Institute

The Murucupi River belongs to the hydrographic network of the Para River estuary,at the southern portion of the Amazon River mouth,which consists of a fluvial-marine transitional zone under strong impact of both tidal and fluvial *** geochemical results obtained for bottom sediments from the Murucupi River,the Arrozal Channel,and the Para River indicate a natural variation of Pb,Cr,Cu,Zn,and Ni content among these water ways with no significant anthropogenic *** to the threshold effects level(TEL),the contents of trace metals do not offer risk to the local *** contrast,the differences in the Pb isotopic composition of sediments in the Murucupi River,the Arrozal Channel,and the Para River are *** isotopic signatures indicate an anthropogenic contribution of Pb in the Murucupi River originating from the domestic effluents of urban centers;industrial waste represented by red mud is not *** results demonstrate that the Pb isotopic signature is a prospective indicator for future contamination of bottom sediments by trace metals and is useful for identifying contaminants among the possible anthropogenic sources.

关键词： Bottom sediments Pb isotopes Trace metals Murucupi River Barcarena

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deep sedation during gastrointestinal endoscopy: Propofol-fentanyl and midazolam-fentanyl regimens

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World Journal of Gastroenterology 2013年第22期19卷 3439-3446页

作者： Marcos Eduardo Lera dos Santos Fauze Maluf-Filho Dalton Marques chaves Sergio Eiji Matuguma Edson Ide Gustavo de oliveira Luz Thiago Ferreira de Souza Fernanda C Simoes Pessorrusso Eduardo Guimares Hourneaux de Moura Paulo Sakai department of Gastroenterology Hospital das Clínicas University of Sao Paulo Medical School Sao Paulo CEP 05403-900 Brazil Cancer Institute of Sao Paulo State Sao Paulo CEP 01246-000 Brazil

AIM: To compare deep sedation with propofol-fentanyl and midazolam-fentanyl regimens during upper gastrointestinal endoscopy. METHODS: After obtaining approval of the research ethics committee and informed consent, 200 patients were evaluated and referred for upper gastrointestinal endoscopy. Patients were randomized to receive propofol-fentanyl or midazolam-fentanyl (n = 100/group).We assessed the level of sedation using the observer's assessment of alertness/sedation (OAA/S) score and bispectral index (BIS). We evaluated patient and physician satisfaction, as well as the recovery time and complication rates. The statistical analysis was performed using SPSS statistical software and included the MannWhitney test, χ 2 test, measurement of analysis of variance, and the κ statistic. RESULTS: The times to induction of sedation, recovery, and discharge were shorter in the propofolfentanyl group than the midazolam-fentanyl group. According to the OAA/S score, deep sedation events occurred in 25% of the propofol-fentanyl group and 11% of the midazolam-fentanyl group (P = 0.014). Additionally, deep sedation events occurred in 19% of the propofol-fentanyl group and 7% of the midazolamfentanyl group according to the BIS scale (P = 0.039). There was good concordance between the OAA/S score and BIS for both groups (κ = 0.71 and κ = 0.63, respectively). Oxygen supplementation was required in 42% of the propofol-fentanyl group and 26% of the midazolam-fentanyl group (P = 0.025). The mean time to recovery was 28.82 and 44.13 min in the propofolfentanyl and midazolam-fentanyl groups, respectively (P deep sedation occurred with propofolfentanyl and midazolam-fentanyl, but was more frequent in the former. Recovery was faster in the propofol-fentanyl group.

关键词： Endoscopy deep sedation Anesthetic administration Anesthetic dose Adverse effects

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Inhibitory Effect of the Essential Oil from Hyptis suaveolens （L.） Poit on the Growth and Aflatoxins Synthesis of Aspergillus flavus

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Journal of Life Sciences 2013年第3期7卷 276-281页

作者： Ana Carolina Pessoa Moreira Egberto Santos Carmo Paulo Alves Wanderley evandro Leite de Souza Edeltrudes de oliveira Lima department of Pharmaceutical Sciences Federal University of Paraiba Joao Pessoa 58051-900 Brazil Academic Unit of Health Federal University of Campina Grande Cuitd 58175-000 Brazil department of Agriculture Federal University of Paraiba Bananeiras 58220-000 Brazil Laboratory of Food Microbiology Department of Nutrition Federal University of Paraiba Joao Pessoa 58051-900 Brazil

H. suaveolens （L.） Poit has been used in folk medicine revealing a wide pharmacological potential. This study aimed to evaluate the efficacy of the essential oil from 11. suaveolens leaves in inhibiting the growth of A. flavus LM257 and synthesis of aflatoxins Bl and B2. The essential oil at 20, 40 and 80 laL/mL strongly reduced the biomass and spore germination ofA. flavus. A 100% inhibition was found at 40 μL/mL and 80μL/mL, while at 20 μL/mL the growth depressed over 50% for both tested parameters. The essential oil at all assayed concentrations totally inhibited the production of aflatoxin B1 and B2. From these results, the essential oil from 11. suaveolens leaves may be considered as an alternative and effective inhibitor ofA. flavus, in addition to offer some protective effect to the production of aflatoxins.

关键词： Hyptis suaveolens essential oil Aspergillusflavus mycotoxins inhibitory effect.

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Therapeutic and biological activities of Calotropis procera(Ait.) ***.

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Asian Pacific Journal of Tropical Medicine 2010年第4期3卷 332-336页

作者： Marcia Calheiros chaves Silva Antonio Batista da Silva Fabiano Moura Teixeira Paulo Cesar Pereira de Sousa Regina Maria Macedo Rondon Jose Eduardo Ribeiro Honorio Junior Luiz Rafael Leite Sampaio Samanda Lima oliveira Angela Nadyla Martins Holonda Silvania Maria Mendes de Vasconcelos Enfermeira Mestre em Farmacologia/Universidade Federal do Ceara/UFC Farmaceutico Mestre em Patologia Tropical/Universidade Federal do Amazonas/UFAM Biologo Mestre em Bioquimica/Universidade Federal do Ceara/UFC Farmaceutico Mestre em Ciencias Farmaceutica/Universidade Federal do Ceara/UFC Biologa Mestre em Producao Animal/Universidade Estadual do Ceara/UECE Biologo Mestre em Fisiologia da Universidade Estadual do Ceara/UECE Enfermeiro Mestrando em Farmacologia da Universidade Federal do Ceara/UFC Aluna de Farmacia da Universidade Federal do Ceara/UFC Enfermeira Professora Adjunto do Depto.de Fisiologia e Farmacologia da Universidade Federal do Ceara/UFC

Medicinal plants have been used to treat various ailments of the poor population around the world;hence the interest among researchers to know the active ingredients of certain plants has being *** Calotropis procera(***) is a plant original from Africa,commonly found in northeastern *** is well known for their pharmacological properties,since it produces large amounts of *** important role that medicinal plants play in folk medicine has led us to develop this article in order to review the major pharmacological activities of C. procera.

关键词： Calotropis procera Pharmacological activity Medicinal plants

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