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Geochemical study of submicron particulate matter(PM1)in a metropolitan area

Geoscience Frontiers 2022年第1期13卷 417-429页

作者： Ismael L.Schneider Elba C.Teixeira Guilherme L.Dotto Diana Pinto Cheng-Xue Yang Luis F.O.Silva Postgraduate Program in Remote Sensing and Meteorology Universidade Federal do Rio Grande do SulAv.Bento Gonçalves9500 Porto AlegreRSBrazil department of Civil and Environmental Universidad de la CostaCUCCalle 58#55-66BarranquillaAtlanticoColombia Research department Fundação Estadual de Proteção Ambiental Henrique Luís RoesslerAv.Borges de Medeiros261Porto AlegreRSBrazil Chemical Engineering department Federal University of Santa Maria97105-900 Santa MariaBrazil School of Earth Sciences and Resources China University of Geosciences BeijingBeijing 100083PR China departamento de Ingeniería Civil y Arquitectura Universidad de LimaAvenida Javier Prado Este 4600–Santiago de Surco 1503Perú

Air pollution has become a major problem in urban areas due to increasing industrialization and *** this study ambient concentrations of PM1 and metal concentrations as well as source contributions were identified and quantified by using Positive Matrix Factorization(PMF)in receptor modeling in the Metropolitan Area of Porto Alegre,*** PM1 samples were collected on PTFE filters from december 2012 to december 2014 in two sampling *** ion and trace element concentrations were *** average concentrations were 12.8 and 15.2μg/m^(3) for Canoas and Sapucaia do Sul sites,*** ion contributions of PM1 were secondary pollutants such as sulfate and *** elements,especially Cu,Pb,Zn,Cd,and Ni also made important contributions which are directly associated with anthropogenic *** results show significantly higher levels in winter than in *** of the PM1 and the analyzed PM species and elements originated from anthropogenic sources,especially road traffic,combustion processes and industrial activities,which are grouped in 7 major contributing sources.A back-trajectory analysis showed that the long-range transport of pollutants was not relevant in relation to the contribution to PM1 and metal *** work highlights the importance of urban planning to reduce human health exposure to traffic and industrial emissions,combined with awareness-raising actions for citizens concerning the impact of indoor sources.

关键词： PM1 Trace elements Source apportionment PMF Back trajectory

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Highly electroactive N–Fe hydrothermal carbons and carbon nanotubes for the oxygen reduction reaction

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Journal of Energy Chemistry 2020年第11期29卷 260-270页

作者： R.G.Morais N.Rey-Raap J.L.Figueiredo M.F.R.Pereira Associate Laboratory LSRE-LCM Departamento de Engenharia QuimicaFaculdade de EngenhariaUniversidade do PortoR.Dr.Roberto Frias s/n4200-465PortoPortugal

Glucose-derived carbons were prepared by hydrothermal carbonization of glucose followed by carbonization or activation to obtain carbon materials with different microporosities. These microporous carbons and carbon nanotubes(CNTs) were functionalized with melamine and/or iron(Ⅱ) phthalocyanine(FePc)following three different methodologies:(i) Functionalization with melamine via thermal treatment,(ii)incorporation of the lowest amount of FePc reported in the literature via incipient wetness impregnation followed by thermal treatment and(iii) functionalization with melamine followed by Fe Pc *** chemical and textural characterization of the prepared materials and their electrochemical assessment allowed to understand the role of microporosity in the incorporation of FePc and its effect on the oxygen reduction reaction(ORR). It was observed that FePc was preferentially incorporated inside the porous structure, especially in samples with more developed microporosity. However, functionalization with melamine modified the textural properties and the surface chemistry, favoring the incorporation of FePc on the surface. Regarding the electrochemical performance, the presence of FePc greatly enhanced the electroactivity of the microporous catalysts. An onset potential of 0.88 V and a four-electron pathway were obtained for glucose-derived carbons, whereas the limiting current densities and kinetic current densities rose by 126% and 222%, respectively, in comparison to the base sample. Notwithstanding, the highest electrochemical activity was observed for the sample prepared with CNTs, due to the synergy between the active metal centers and their highly graphitic carbon structure. The electrochemical parameters of CNTFeP csurpass the commercial Pt/C. The half-wave potential is 40 mV higher, the limiting current density increases by 17%, and a negligible production of by-products(< 1%) was observed.

关键词： Iron(Ⅱ)phthalocyanine Hydrothermal carbons Carbon nanotubes Oxygen reduction reaction Electrocatalysis

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Real-time energy optimization of HEVs under-connected environment: a benchmark problem and receding horizon-based solution

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Control Theory and Technology 2022年第2期20卷 145-160页

作者： Fuguo Xu Hiroki Tsunogawa Junichi Kako Xiaosong Hu Shengbo Eben Li Tielong Shen Lars Eriksson Carlos Guardiola department of Engineering and Applied Sciences Sophia UniversityTokyo 102-8554Japan Higashi-Fuji Research Center Toyota Motor Corporation.Shizuoka 410-1107Japan The State Key Laboratory of Mechanical Transmissions Chongqing UniversityChongqing 400044China The State Key Laboratory of Automotive Safety and Energy Tsinghua UniversityBeijing 100084China Vehicular Systems Department Electrical EngineeringLinkoping UniversitySE 58183Linkoping.Sweden departamento de Maquinas y Motores Termicos Universitat Politecnica de Valencia.Camino de Vera s/n46022 ValenciaSpain

In this paper,we propose a benchmark problem for the challengers aiming to energy efficiency control of hybrid electric vehicles(HEVs)on a road with ***,it is assumed that the targeted HEVs are in the connected environment with the obtainment of real-time information of vehicle-to-everything(V2X),including geographic information,vehicle-to-infrastructure(V2I)information and vehicle-to-vehicle(V2V)*** provided simulator consists of an industrial-level HEV model and a traffic scenario database obtained through a commercial traffic simulator,where the running route is generated based on real-world data with slope and intersection *** benchmark problem to be solved is the HEVs powertrain control using traffic information to fulfill fuel economy improvement while satisfying the constraints of driving safety and travel *** show the HEV powertrain characteristics,a case study is given with the speed planning and energy management strategy.

关键词： Powertrain control Connected and automated vehicles Hybrid electric vehicles Vehicle-to-everything

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Distribution and origin of polycyclic aromatic hydrocarbons in surface sediments from an urban river basin at the Metropolitan Region of Curitiba,Brazil

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Journal of Environmental Sciences 2011年第6期23卷 904-911页

作者： Natalicio Ferreira Leite Patricio Peralta-Zamora Marco Tadeu Grassi Instituto de Tecnologia do Paran(TECPAR) 81350-010 CuritibaBrazil departamento de Química Universidade Federal do Parana'(UFPR)C.P.1908181531-990 CuritibaBrazil

The concentrations of 16 polycyclic aromatic hydrocarbons（PAHs） were determined in surface sediment samples from nine sites located at the Iguau River Basin in the Metropolitan Region of Curitiba,Brazil to evaluate their distribution and *** total concentration of the PAHs was greater for sediments from highly urbanized areas,while the sediments from the Iraí Environmental Protection Area（Iraí EPA） showed significantly low *** sediments from the Iguau and Barigui rivers were classified as highly contaminated,while those from the Cercado and Curralinho rivers were classified as moderately *** predominance of PAHs containing two to four aromatic rings in most of the samples suggested the direct input of raw sewage into the water resources ***[g,h,i]perylene,dibenzo[a,h]anthracene and indeno[1,2,3-cd]pyrene were predominant in sediments from the areas under the greatest urban and industrial *** correlation between thermodynamic stability and the kinetics of evolution presented by the isomeric pairs indicated that combustion is the predominant source of PAHs in the sediments because the combustion of fossil fuels affected most of the points evaluated,followed by combustion of biomass and eventually combustion of oil product *** general,the results showed that areas under strong urban influence,as well as the Iraí EPA,receive contributions of PAHs from similar sources.

关键词： PAHs trace level analysis fiver sediment isomeric ratio Igua^u River Basin

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Effect of hydroxyl on dye-sensitized solar cells assembled with TiO_2 nanorods

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Chinese Physics B 2018年第1期27卷 75-79页

作者：孟立建杨涛云斯宁李灿 Functional Materials Laboratory School of Materials & Mineral Resources Xi'an University of Architecture and Technology departamento de Física and Centre of Innovation in Engineering and industrial Technology Instituto Superior de Engenharia do PortoInstituto Politécnico do Porto Key Laboratory of Biofuels Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences

YiO2 nanorods have been prepared on ITO substrates by dc reactive magnetron sputtering technique. The hydroxyl groups have been introduced on the nanorods surface. The structure and the optical properties of these nanorods have been studied. The dye-sensitized solar cells （DSSCs） have been assembled using these TiO2 nanorods as photoelectrode. And the effect of the hydroxyl groups on the properties of the photoelectric conversion of the DSSCs has been studied.

关键词： hydroxyl groups TiO2 nanorod dye-sensitized solar cells sputtering

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Performance evaluation of lateral canopy shakers with catch frame for continuous harvesting of oranges for juice industry

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International Journal of Agricultural and Biological Engineering 2020年第3期13卷 88-93,F0002页

作者： Rafael R.Sola-Guirado Sergio Castro-Garcia Gregorio L.Blanco-Roldán Jesús A.Gil-Ribes Emilio J.González-Sánchez Universidad de Córdoba Departamento de Ingeniería RuralE.T.S.I.Agronómica y de MontesCampus de RabanalesCtra.Nacional IV Km 396CordobaSpain

Citrus is mainly oriented to fresh consumption,and harvesting is usually performed ***,the high cost of harvesting and the low availability of labour can compromise the profitability of the crop when it is destined to juice *** development of citrus mechanical harvesting for industrial processing is conditioned to reach a high fruit removal efficiency,with a reduced damage to both fruit and *** current machines available are very large,requiring extensive plantations with long rows of trees to be *** this study,two lateral canopy shakers equipped with a catch frame were evaluated to harvest independently both sides of the hedge on intensive citrus plantations with the main objective of determining their performance and *** lateral canopy shakers tested were three tractor-drawn machines,one commercial machine and two *** tested machines reached a mean value of 78%of fruit ***,the prototypes,equipped with a catch frame,were able to recover a mean value of 70%of *** the results were promising,for achieving an efficient result,the application of this harvesting technology still requires a process of improvement,and the adaptation of both the machine and the *** machines should reduce the amount of post-harvest ground fruit(5.9%-10.4%).Tree damages generated by the contact of the catch frame with the trunk and the metal rods with main branches were the most ***,it is still necessary to increase the ground speed of the machinery and improving the design of the rods,regulating the rod penetrating deep in the canopy to improve the fruit recovery and limit the damage caused to the trees.

关键词： harvester mechanical harvesting fruit removal tree damage Citrus sinensis L.Osbeck

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dengue Climate Variability in Rio de Janeiro City with Cross-Wavelet Transform

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Journal of Environmental Protection 2022年第3期13卷 261-276页

作者： Suellen Araujo Franco dos Santos Hugo Abi Karam Augusto José Pereira Filho Jú lio Cesar Barreto da Silva Jose Luis Flores Rojas Julio Migue Angeles Suazo Isela Leonor Vá squez Panduro Cesar Arturo Sanchez Pe&ntilde a departamento de Meteorologia Instituto de Geoci&ecirc ncias Universidade Federal do Rio de Janeiro (UFRJ) Rio de Janeiro Brasil departamento de Ciê ncias Atmosfé ricas Instituto de Astronomia Geofísica e Ci&ecirc ncias Atmosfé ricas Universidade de S&atilde o Paulo (IAG-USP) S&atilde o Paulo Brasil Programa de Pós-Graduaç &atilde o em Ciê ncias Ambientais Universidade Estadual do Rio de Janeiro (UERJ) Rio de Janeiro Brasil Instituto Geofísico do Peru (IGP) Lima Per&uacute Facultad de Ingeniería Forestal y Ambiental. Universidad Nacional Autó noma de Tayacaja Daniel Herná ndez Morillo (UNAT) Pampas Per&uacute Universidad Tecnoló gicadel Perú Faculdad de Engenier&iacute a industrial Lima Per&uacute Centro de Previs&atilde o do Tempo e Estudos Climá ticos Cachoeira Paulista Brasil Programa de Pó s-Graduaç &atilde o em Computaç &atilde o Aplicada Instituto Nacional de Pesquisas Espaciais (INPE) S&atilde o José dos Campos S&atilde o Paulo SP Brasil

dengue is one of the most prominent tropical epidemic diseases present in the Rio de Janeiro city and Southeast part of Brazil, due to the widespread conditions of occurrence of the dengue vector, the mosquito Aedesaegypti, such as high-temperature days interlaced with afternoon or nocturnal rainstorms in summer. This work has the objective of investigating the relationships between variabilities of the El Ni?o-South Oscillation (ENSO) and greater epidemics of dengue in Rio de Janeiro city. To accomplish this goal, the analysis and signal decomposition by cross-wavelet transform (WT) was applied to obtain the cross variability associated with variations of power and phase of both signals by characteristic periods and along with the time series. Data considered in the analysis are (the decimal logarithm of normalized value) of the monthly available notifications of dengue worsening, provided by the public health system of Brazil, and the Southern Oscillation Index (SOI) Ni?o 3.4 data, provided by the National Oceanic and Atmospheric Administration (NOAA), in the period 2000-2017. A maximum cross-wavelet power close to 0.45 was obtained for the representative period of 1 year and also to periods between 3 and 4 years, associated with the positive phase of the SOI index (i.e. , La Ni?a) or with a transition to the positive phase. The evolution of the combined variability of SOI and dengue can be expressed by progressive differences in phase along the time, eventually resulting in yielding phases (i.e., La Niña-dengue epidemic).

关键词： dengue Fever Cross-Wavelet Transform Analysis El Niño-Southern Oscillation Index

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Growing arugula plants using aeroponic culture with an automated irrigation system

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International Journal of Agricultural and Biological Engineering 2020年第3期13卷 52-56页

作者： Jhon D.Ríos Salazar John E.Candelo-Becerra Fredy E.Hoyos Velasco Escuela de Física Facultad de CienciasUniversidad Nacional de ColombiaSede MedellínColombia departamento de Energía Eléctrica y Automática Facultad de MinasUniversidad Nacional de ColombiaSede MedellínColombia

The paper presents an efficient form of growing arugula plants by means of automatic control of an aeroponic culture irrigation *** system considers a reprogrammable electronic circuit that uses software to generate different irrigation cycles to obtain an adequate growth of arugula *** show how different samples grown in a greenhouse had the same growth behavior as field-grown samples during the test *** was possible to obtain a more efficient and sustained five-week production to supply consumers by having a continuous cycle irrigation system,which was operated for 35 *** growth and number of leaves were maintained in a similar way for different plants *** grow similarly,but some of them showed size differences during the five weeks.

关键词： aeroponic culture arugula plants food production irrigation systems smart system

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An Expert System Oriented towards the detection of Influenza and dengue developed on Mobile Platforms

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Journal of Software Engineering and Applications 2015年第6期8卷 295-301页

作者： Raúl Beltrán Ramírez Rocío Maciel Arellano Carlos González Sandoval Adauto Casas Flores departamento de Sistemas de Información Universidad de Guadalajara Periférico NorteZapopanMéxico Centro de Ensenanza Técnica industrial GuadalajaraMéxico

Nowadays, mobile technology makes it possible for us to realize processes in a relatively short amount of time, showing the user friendly and efficient interfaces that any person is capable of adapting to. Continuing this trend, we develop a mobile application that aids in giving an early diagnosis of Influenza and dengue, two diseases that affect approximately 5% of the world population (in the case of dengue) and 5% - 15% of the northern hemisphere (in the case of influenza). Our application consists of an expert system based on fuzzy logic that analyzes symptoms introduced by the user and formulates a diagnosis in approximately 2 - 4 minutes. This system considerably reduced the diagnostic time, improving the recuperation process from these diseases due to their early detection.

关键词： Mobile Technology Mobile Applications dengue Influenza Expert System

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cysA,cysP,and rpoS mutations increase the power density in *** microbial fuel cells:Performing enhancement based on metabolic flux analysis

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Advances in Bioscience and Biotechnology 2013年第1期4卷 103-111页

作者： Juan Diego Mejia Cindy Stephany Rojas Laura Avellaneda Franco David Alejandro Urbina Gomez Beatriz Helena Correa Arias Nubia Milena Velasco Rodriguez Maria Teresa Cortes Montanez Martha Josefina Vives-Florez Andres Fernando Gonzalez Barrios Grupo de Diseno de Productos y Procesos(GDPP) Departamento de Ingenieria QuimicaUniversidad de los AndesBogotaColombia Grupo de Investigacion en Produccion y Logistica(PYLO) Departamento de Ingenieria IndustrialUniversidad de los AndesBogotaColombia Laboratorio de Electroquimica y Materiales Polimericos Departamento de QuimicaUniversidad de los AndesBogotaColombia Centro de Investigaciones Microbiologicas(CIMIC) Departamento de Ciencias BiologicasUniversidad de los AndesBogotaColombia

This study presents the simulation of a MFC with Pseudomonas aeruginosa based on a metabolic flux analysis (MFA) which arises as a linear programming model that served as input for the fuel cell model. The linear model was implemented in Xpress MP? and the coupling model in Comsol Multiphysics?. The in silico model predicted maximum potentials of 0.135 V which were consistent with those obtained in the experimental cell. Afterwards, an optimization platform based on multiobjective optimization approach was implemented aimed to determine genes that increase the average cell power. cysA, cysP and rpoS mutants which were predicted to increase the power of the cell, were experimentally tested with an air cathode fuel cell finding an augment up to 35-fold in the average power density for the rpoS mutant. Power densities were obtained through experimentation in the range of [0.13 - 5] mW/m2. Electron shuttle rise was qualitative corroborated trough cyclic voltammetry tests, which allowed to visualize the augment of the peaks for rpoS mutation.

关键词： Component Formatting Style Styling Insert

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