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Solar-driven CO_(2) conversion to methane and methanol using different nanostructured Cu_(2)O-based catalysts modified with Au nanoparticles

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Journal of Energy Chemistry 2024年第4期91卷 287-298页

作者： João Angelo Lima Perini Lilian d.Moura Torquato Juliana Fde Brito Gustavo A.Andolpho Mateus A.Gonçalves Leonardo d.de Angelis Lucas d.germano Susana I.Córdoba de Torresi Teodorico C.Ramalho Maria V.Boldrin Zanoni São Paulo State University(UNESP) Institute of ChemistryRua Prof.Francisco Degni55AraraquaraSP 14800-060Brazil National Institute of Alternative Technologies for detection Toxicological Evaluation and Removal of Micropollutants and Radioactive Substances(INCT-DATREM)São Paulo State University(UNESP)Institute of ChemistryRua Prof.Francisco Degni55AraraquaraSP 14800-060Brazil Laboratory of Molecular Modelling Department of ChemistryNatural Sciences InstituteFederal University of LavrasLavrasMG 37200-900Brazil department of Chemistry Faculty of ScienceUniversity of Hradec KrálovéHradec Králové50003Czech Republic Instituto de Química Universidade de São PauloAv.Prof.Lineu Prestes 74805508-080São PauloSPBrazil

This work describes the use of TiO_(2)nanotubes-based electrodes(TNT)modified with Cu_(2)O nanostructures and gold nanoparticles for the photoelectroreduction of CO_(2)to produce value-added compounds.A thin layer of polydopamine was used as both an adherent agent and an electron transfer mediator,due to itsπ-conjugated electron *** highest production yield was achieved using a TNT@PdA/Nc/Au40%electrode,with Faradaic efficiencies of 47.4%(110.5μM cm^(-2))and 27.8%(50.4μM cm^(-2))for methanol and methane,*** performance of the photoelectrodes was shown to be Cu_(2)O facet-dependent,with cubic structures leading to greater conversion of CO_(2)to methanol(43%)and methane(27%),compared to the octahedral morphology,while a higher percentage of metallic gold on the nanostructured Cu_(2)O surface was mainly important for *** functional theory(dFT)calculations supported these findings,attributing the superior photoelectrocatalytic performance of the TNT@PdA/Nc/Au40%electrode for CH4generation to the formation of an OCH3intermediate bonded to Au *** using isotope-labeling and analysis by gas chromatograph-mass(GC-MS)demonstrated that13CO_(2)was the source for photoelectrocatalytic generation of13CH3OH and13CH313CH2OH.

关键词： Cu_(2)O nanocubes Photoelectrocatalysis Polydopamine CO_(2) photoelectroreduction dFT calculations

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超声波与人工智能在现场绝缘诊断中的应用(英文)

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高电压技术 2012年第8期38卷 1842-1847页

作者： Ferreira T V germano a d Silva K M Costa E G department of Electrical Engineering Federal University of Campina GrandeCampina Grande Institute for High Voltage Technology and Power Transmission Technische Universitt München department of Electrical Engineering University of Brasília

This work studies the feasibility of implementing a system for diagnosis of electrical insulation in the field based on ultrasonic noise and artificial neural *** system,proved functional under laboratory conditions,extracts spectral information from the ultrasonic noise emitted by the corona discharges in electric equipments,and correlates it with previously defined degrees of *** achieve this classification,artificial neural networks are *** results show the viability of the method in the site;nevertheless they also show that its reliability is proportional to the size and diversity of the available database.

关键词：局部放电射频信号放电量高电压技术

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Perceptual Visuo-Motor Skills and Handwriting Production of Children With Learning disabilities

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Psychology Research 2021年第5期11卷 199-207页

作者： Milena S.d.Maciel Simone A.Capellini Giseli d.germano São Paulo State University“Júlio de Mesquita Filho”-UNESP São PauloBrazil

This study aimed to explore the performance of the perceptual-visuomotor skills and the production of handwriting in children with Learning disabilities.A total of 56 children participated,being a convenience sample,of both sexes,average age of eight years old,from 3rd to 5th grade level of Elementary *** children were divided into the following groups:GI(28 children diagnosed with Learning disabilities);GII(28 children with good academic performance,paired with GI in relation to chronological age and sex).They were evaluated individually in dysgraphic scale,visual perception development test,and fine motor *** analysis was *** was a significant difference between GI and GII for the subtests of eye-hand coordination,copying,visual closure,fine motor precision,and fine manual control *** had difference between the groups for handwriting performance in descending and/or ascending subtests,irregularity of dimension,poor forms,and total score of dysgraphia *** results presented in this study indicate that children with Learning disabilities can manifest significant visomotor impairment and deficit in legibility and handwriting quality,causing failures in the elaboration of sensorimotor plans that,added to the intrinsic deficit of long-term memory,result in persistent academic difficulties.

关键词： Learning disabilities evaluation handwriting visual perception fine motor skills dysgraphia

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Battery Charger for Electric Vehicles based on a Wireless Power Transmission

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CES Transactions on Electrical Machines and Systems 2017年第1期1卷 66-71页

作者： Paolo germano Yves Perriard Integrated Actuators Laboratory(LAI) École Polytechnique Fédérale de Lausanne(EPFL)Rue de la Maladière 71 BP.O.Box 526 CH-2002 NEUCHATEL-SWITZERLAND

In this paper,the case of a battery charger for electric vehicles based on a wireless power transmission is *** specificity of every stage of the overall system is *** on calculated and measured results,relevant capacitive compensations of the transformer and models are suggested and discussed in order to best match the operating mode and aiming at simplifying as much as possible the control and the electronics of the charger.

关键词： Battery charge battery model control strategy converter topologies electric vehicle non-linear load shielding wireless power transmission.

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Homocysteine as a Biomarker for Predicting disease-Free Survival in Breast Cancer

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Advances in Breast Cancer Research 2013年第2期2卷 24-31页

作者： daniela Filippini Ierardi Luis Gustavo Raimundo Gimena Aguiar Patrícia Bandeira Rueda germano Luiz Henrique Gebrim Nelson Carvas Bruno Frederico Aguilar Calegare Vania d’Almeida Catarina Segreti Porto Miriam Galvonas Jasiulionis Mariangela Correa departamento de Farmacologia Universidade Federal de Sao Paulo Sao Paulo Brazil Instituto do Cancer do Estado de Sao Paulo Sao Paulo Brazil disciplina de Imunologia Universidade Federal de Sao Paulo Sao Paulo Brazil Centro de Referência da Saúde da Mulher Hospital Pérola Byington Sao Paulo Brazil disciplina de Mastologia Universidade Federal de Sao Paulo Sao Paulo Brazil departamento de Psicobiologia Universidade Federal de Sao Paulo Sao Paulo Brazil Instituto de Educacao e Ciência Hospital Alemao Oswaldo Cruz Sao Paulo Brazil

Introduction: Breast cancer is the leading cause of cancer mortality among women. Some biomarkers and clinical features are used for the diagnosis and prognosis of this tumor, but no prognostic or predictive marker is routinely available specifically for hormone receptor positive tumors. Homocysteine is well known as a risk factor in atherosclerotic vascular diseases, but its participation in cancer biology is still unclear. The aim of this study was to evaluate serum Homocysteine and Cysteine as biomarkers of disease progression in breast tumor. As a secondary objective, the effect of a short course (one month) of hormonal treatment on Homocysteine, Cysteine and dNA methylation levels was also evaluated. Methods: Blood samples, tumor samples and normal adjacent tissue were collected during the initial biopsy (pre-treatment) and after one month of hormonal therapy (post-treatment). Serum Homocysteine and Cysteine were analyzed by HPLC and tissue global dNA methylation was determined by the Methylation-Sensitive Restriction Enzyme (MSRE) technique. Results: Variations in Homocysteine levels were significantly correlated with disease-Free Survival. Cox proportional risk model demonstrated that nodal status and Homocysteine levels were independent prognostic factors for disease-free survival (dFS). A significant difference was observed between pre-and post-treatment levels of Homocysteine and Cysteine in advanced tumors, suggesting a prognostic role in patients with poor clinical characteristics. Conclusion: Although more studies are needed to confirm these results, our research suggests that Hcy might be used as a prognostic biomarker for breast cancer.

关键词： Homocysteine Cysteine Breast Cancer Estrogen Receptor Prognostic and Predictive Biomarker Tamoxifen Anastrozol

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含激波的湍流流动高精度大涡数值模拟方法（英文）

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空气动力学学报 2016年第2期34卷 190-203页

作者： d.V.Kotov H.C.Yee A.Wray A.Hadjadj B.Sjogreen Center for Turbulence Research Stanford UniversityStanfordCA 94305USA NASA Ames Research Center Moffett FieldCA94035USA CORIA UMR 6614&-INSA de Rouen 76800 St-Etienne du RouvrayFrance Lawrence Livermore National Laboratory Box 808L-422LivermoreCA 94551USA

针对采用亚格子模型进行含激波的湍流流动模拟时会面临激波附近的精度损失问题,考虑从通过亚格子模型以及数值模拟方法两方面的改进来实现湍流流动大涡模拟的精度提高。大涡模拟采用了Yee及Sjgreen(2009)提出的高阶低耗散方法。该方... 详细信息

针对采用亚格子模型进行含激波的湍流流动模拟时会面临激波附近的精度损失问题,考虑从通过亚格子模型以及数值模拟方法两方面的改进来实现湍流流动大涡模拟的精度提高。大涡模拟采用了Yee及Sjgreen(2009)提出的高阶低耗散方法。该方法采用自适应的流场探测器以控制计算中所需区域的数值耗散,并考虑对动力学模型采用在激波位置使用Sagaut和germano(2005)提出的单边亚格子过滤器和(或)直接禁用亚格子项等方法加以改进。对于标准的马赫数1.5和3条件下的激波-湍流干扰问题,上述新方法相较于全区域采用亚格子模型的方法均表现出了相似的精度提升。同时实现的数值精度改进方案采用了Harten的亚单元分辨过程来定位和锐化激波,并在精确激波位置附近的网格点处采用了单边测试滤波。

关键词：高阶低耗散格式 Germao模型大涡模拟滤波直接数值模拟方法亚单元分辨格式激波湍流干扰

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