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Copper Oxide Inked with Dye Obtained from the Lactarius Indigo Fungus for Energy Production

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Journal of Materials Science and Chemical Engineering 2022年第11期10卷 36-51页

作者： Abigail Bautista Castañeda maria Guadalupe Montes De Oca dulce Yolotzin Medina Velazquez Jorge Iván Aldana González Pedro Adrian martinez Montolla Joan Reyes Miranda Miguel Angel Barron Universidad Autónoma Metropolitana Departamento de Materiales Ciencias Básicas e Ingeniería Reynosa Tamaulipas México Instituto Politécnico Nacional ESIQIE UPALM S/N Col. Mexico City México

The results obtained from the characterization of a copper deposit on indium doped tin oxide (ITO), inked with natural dye extracted from the Lactarius indigo fungus, for use in Gratzel type solar cells are reported. An electrolyte composed of 0.1 M HNO3 and 0.5 M CuSO4 was used, this solution was prepared for copper deposits on the ITO. Cyclic voltammetry was performed at different scan rates to obtain the reduction zone for deposition between potentials of ?100 to ?500 mV. The dye was obtained from the indigo Lactarius fungus from maceration, once the inked deposits were obtained, characterizations were performed, the initial test was to obtain the Ultraviolet-Visible (UV-visible) of the pure dye, and later the same test was performed on the inked oxide. Electrochemical Impedance Spectroscopy (EIS) was performed on the samples, as well as Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM), to characterize the material properties for its application.

关键词： Copper Oxide Ink Dye Energy Production Indigo Milk Mushroom

Blue-Red Tuning Emission of ZnO: Europium Quantum Dots with Different Excitation Wavelengths

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Open Journal of Applied Sciences 2018年第10期8卷 441-445页

作者： Primitivo Ortiz Maldonado Ana K. Chavez-Alvarado Francisco J. Rodríguez Gutierrez Joan Reyes Miranda dulce Y. Medina Velazquez Miguel A. Barron Elizabeth Garfias García Universidad Autónoma Intercultural de Sinaloa El Fuerte México División de Ciencias Básicas e Ingeniería Universidad Autónoma Metropolitana Reynosa Tamaulipas México

Optoelectronic applications require the development of new fluorescent and efficient luminescent materials, free of toxicity, low in cost, and easy to produce. In this way the synthesis of zinc-oxide (ZnO) quantum dots (QDs) has recently received special attention due to their good optical, electrical and chemical properties with low production costs and blue light emission. In this work ZnO QDs were successfully doped with europium in order to obtain a tunable emission luminescence from blue emission of ZnO to red emission of europium as a function of wavelength excitation. Results show an efficient blue to red tuning when the excitation wavelength was changed from 317 nm to 395 nm, respectively. This opens the possibility of having new optical devices to produce different color emission using the same material.

关键词： Chromaticity Diagram Emission Spectra Europium Luminescence Red-Blue Tuning ZnO Quantum Dots White Light

Use of Perovskite-Type Lanthanum Nickelate Synthesized by the Polymeric Precursor Method in the Steam Reforming Reaction of Methane

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Materials Sciences and Applications 2012年第6期3卷 363-368页

作者： Daniele M.H.martinelli dulce M.A.Melo Anne M.Garrido Pedrosa Antonio E.martinelli marcus A.de F.Melo mary K.S.Batista Roberto C.Bitencourt Department of Chemistry Federal University of Rio Grande do NorteCCETNatalBrazil Department of Chemistry Federal University of SergipeCCETSao CristóvaoBrazil Research Center Petrobras—Cenpes Rio de JaneiroBrazil

In the current work, LaNiO3 perovskite was synthesized using the polymeric precursor method. The materials were thermally treated at 300°C for 2 hours, subsequently supported on alumina or zirconia and finally calcined at 800°C for 4 hours. The resulting samples were characterized by X-ray diffraction, thermogravimetry, BET surface area and thermo-programmed reduction. Steam reforming reactions were carried out at 750°C and 6 bar during 4 hours using a pilot reactor under a H2O:CH4 ratio of 2.5. The mass of catalysts was about 5.7 g. X-ray diffraction patterns confirmed the formation of the perovskite structure in all samples prepared. The results also showed that lanthanum nickelate was more efficient when supported on alumina than zirconia. Finally, it was observed that the methane conversion was approximately 94% and the selectivity to hydrogen was about 70%. In all cases low selectivity to CO and CO2 was verified.

关键词： Lanthanum Nickelate Perovskite Polymeric Precursor Method Steam Reforming Reaction

Effect of Glucose Concentrations on the Growth and Metabolism of Brettanomyces bruxellensis under Aerobic Conditions

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Advances in Microbiology 2013年第3期3卷 227-232页

作者： Ortiz-Muniz Benigno Corro-Herrera Victor Gomez-Rodriguez Javier Domínguez-González JoséManuel Aguilar-Uscanga maría Guadalupe Instituto Tecnológico Superior de Tierra Blanca Av.Veracruz s/n.Col.PEMEXVeracruzMéxico Instituto Tecnológico de Veracruz Unidad de Investigación y Desarrollo en Alimentos(UNIDA)Dpto Ing.Eléctrica y ElectrónicaCol.Formando HogarVeracruzMéxico Universidad de Vigo Departamento de Ingeniería QuímicaFacultad de CienciasCampus OurenceOurenseSpain

Acetic acid can be directly produced from glucose in one-step fermentation by using yeasts of the genus Brettanomyces bruxellensis, hence increasing the industrial application to manufacture products with simplified bioprocesses. Thereby, this work evaluates the influence of initial glucose concentration on the growth and acetic acid production by B. bruxellensis. The results obtained confirmed the presence of Crabtree effect on B. bruxellensis under low glucose concentrations. The maximum acetic acid concentration reached was 15.4 g·L-1 starting with 100 g·L-1 leading to a product yield of 0.154 g·g-1 and a specific acetic acid production rate of 0.05 g·g-1·h-1. The results also indicate that after reaching the acetic acid critic threshold of 4 g·L-1 the metabolism can induce the growth second phase even residual glucose was present on the culture media at high starting glucose concentrations. Additionally, it was observed a lineal relationship between cell viability and acetic acid production.

关键词： Glucose Brettanomyces bruxellensis Acetic Acid Inhibition Crabtree Effect

Cement Slurry with Silica Flour and Metakaolin for Cementation of Oil-Wells Subject to High Temperature

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材料科学与工程（中英文版） 2010年第12期4卷 1-5页

作者： marcos dos Anjos Tiago Renovato Pablo de Souza dulce Melo marcus Melo Julio Freitas Department of Building Technology lnstituto Federal de Edueacdo Cidncia e Tecnologia do Rio Grande do Norte Natal Brazil Cement Laboratory Universidade Federal do Rio Grande do Norte Brazil Department of Chemistry Universidade Federal do Rio Grande do Norte Brazil

Temporal trends in areas at risk for concomitant tuberculosis in a hyperendemic municipality in the Amazon region of Brazil

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Infectious Diseases of Poverty 2020年第4期9卷 162-162页

作者： Alexandre Tadashi Inomata Bruce Thais Zamboni Berra Felipe Lima dos Santos Yan Mathias Alves Ludmilla Leidianne Limirio Souza Antônio Carlos Vieira Ramos Luiz Henrique Arroyo Juliane de Almeida Crispim Ione Carvalho Pinto Pedro Fredemir Palha Aline Aparecida Monroe Mellina Yamamura Regina Célia Fiorati Ana Carolina Scarpel Moncaio dulce maria de Oliveira Gomes Ricardo Alexandre Arcêncio Department of Maternal-Infant and Public Health Nursing University of São Paulo at Ribeirão Preto College of NursingRibeirão PretoSão PauloBrazil Department of Nursing Federal University of São CarlosSão CarlosSão PauloBrazil Department of Neurosciences and Behavioral Sciences Ribeirão Preto Medical School of the University of São PauloRibeirão PretoSão PauloBrazil Department of Nursing Federal University of CatalãoCatalãoGoiásBrazil Mathematics Department University ofÉvoraÉvoraPortugal

Background Although preventable and curable,tuberculosis(TB)still occurs in poor or developing countries,mainly in metropolitan regions of larger *** disease is a serious public health problem,and is directly linked to social *** analyzed temporal trend variations in areas at risk for concomitant TB,and characterized the clinical and epidemiological profiles of cases in a hyperendemic municipality in the Amazon region of *** This ecological study was performed in the municipality of Manaus,in northern *** population comprised cases with concomitant pulmonary and extrapulmonary TB,registered on the Notifiable Diseases Information System(SINAN),between January 1,2009 and December 31,*** risk cluster detection,spatial and spatiotemporal scanning statistical techniques were *** Spatial Variation in Temporal Trends(SVTT)approach was used to detect and infer clusters for significantly different time *** Between 2009 and 2018,873 concomitant TB cases were registered in *** using purely spatial scanning statistics,we identified two risk *** relative risk(RR)of the clusters was 2.21(95%confidence interval[CI]:1.57–2.88;P=0.0031)and 2.03(95%CI:1.58–2.58;P=0.0029).Using space-time scanning,we identified a risk cluster with an RR of 3.57(95%CI:2.84–4.41;P=0.014),between 2017 and *** SVTT analyses,three clusters with spatial variations were detected in the significant temporal trends:SVTT 1(P=0.042),SVTT 2(P=0.046)and SVTT 3(P=0.036).Conclusions In Brazil,several TB-determining factors such as race/color,gender,low educational level and low income overlap in needy urban areas and communities,demonstrating that it is unlikely to reach the goals,agreed and launched with the END TB Strategy within the deadlines of international agreements,if there is no reduction in existing inequities determinants and risk of illness in the country.

关键词： Tuberculosis Public health Epidemiology Spatial analysis Spatio-temporal analysis

Early muscle reinnervation by means of end-to-side neurorrhaphy in an experimental model

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Plastic and Aesthetic Research 2017年第2期4卷 18-23页

作者： AraceIi Pérez RafaeI Reynoso Rosa MRomero AngéIica GonzáIez Jorge Ochoa DuIce HGutiérrez Damián PaIafox Department of Plastic Surgery General Hospital“Dr.Manuel Gea Gonzalez”Mexico City14080Mexico Department of Morphology of Cell and Tissue National Pediatric InstituteMexico City14080Mexico Department of Plastic Surgery Hospital AngelesMexico City14080Mexico Department of Health Sciences Technological University of MexicoMexico City14080Mexico.

Aim:The aim of the study was to provide early muscular reinnervation to avoid muscle atrophy and functional loss in an experimental ***:Fifty rats were divided into five *** group 0(control group)only nerve dissection was *** peroneal nerve section was performed in the remaining *** end-to-end neurorrhaphy(EEN)was made in group *** group 2,an end-to-side neurorrhaphy(ESN)was performed from the tibial nerve to the peroneal *** group 3,a direct EEN,plus an ESN,were used as a nerve graft as a bridge from the donor nerve(tibial);all nerve coaptations were performed through an epineural *** group 4,only a neurotomy was made without any type of ***:Neural diameters were similar in groups 0,1,and 3(38±1μm,31±6μm,32±3μm).Neural fibers in group 3 had an 18%increase in the number of axons(P<0.001)when compared to group *** 2(28±1μm)and group 4(19±3μm)had diminished diameters with a lower index of muscle *** in group 4 presented with'clawed'lower extremities and had difficulty with *** graft diameters was similar in groups 2 and 3(33±4μm,31±3μm),but axon density was significantly higher in group 3(53±6μm,39±8μm)(P<0.001).Axon density was 36%higher when the combination of EEN and ESN with a neural graft through an epineural window was ***:This study revealed that the combination of EEN and ESN repairs with the addition of a neural graft provides a lower index of muscle fiber destruction,and can be a reliable method for reconstruction in high neural injuries.

关键词： Nerve transfer neurorrhaphy muscle reinnervation nerve repair