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Nuclear Science and Techniques 2022年第3期33卷 103-112页

作者： Michel de Almeida Franca julio cezar suita Paulo Fernando Ferreira Frutuoso e Melo Celso Marcelo Franklin Lapa Graduate Program of Nuclear Engineering COPPEFederal University of Rio de JaneiroRio de JaneiroRJ 21941914Brazil Instituto de Engenharia Nuclear(IEN-CNEN) Rio de Janeiro 21941614Brazil Comissao Nacional de Energia Nuclear(SEASE/DRS/CNEN) Rio de Janeiro 22290040Brazil

Thin Layer Activation is a nuclear technique that has key advantages over other wear measuring techniques for mechanical systems,especially for in site experiments on equipment important to safety in nuclear ***,it incurs radioactive dose and,thus,must be proved radiologically safe before use,otherwise,the utilization of this technique may be hindered *** said technique is safe previous to any operational/monetary cost is key,providing a methodology for this early assertion is the main contribution of this work—here,only non-occupationally exposed individuals are *** work offers a methodology,through a case study,to ascertain the Thin Layer Activation parameters to obtain safe levels of radioactive dose while maintaining statistically reliable *** methodology consists of using simulations,through the Monte Carlo Method,to obtain the floors and ceilings for the previously mentioned activation parameters based on operation and work conditions on site.

关键词： Thin Layer Activation Safety evaluation Simulation Equipment wearing

Increasing analyzable steel thickness for thin layer activation experiments

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Nuclear Science and Techniques 2020年第3期31卷 35-44页

作者： Joao Francisco de Oliveira Antunes Mauro Lucio Borges Lemos Michel de Almeida Franca julio cezar suita Celso Marcelo Franklin Lapa Instituto de Engenharia Nuclear Rio de Janeiro 21941-614Brazil Programa de Engenharia Nuclear-COPPE/UFRJ Riode Janeiro 21941-450Brazil

The thin layer activation technique(TLA)is very effective in wear analysis for tribological systems where disassembly is costly or *** its development in the 1970s,TLA has been applied through direct irradiation of solid targets using ionizing particle beams to obtain an activation with a specific *** profile is then used to measure wear in a variety of *** experiments rely heavily on how deep the normalized activation *** of 30μm to 50μm are obtained for constant activation by the standard method,which for many experiments is ***,many others would benefit greatly from a 300μm constant activation layer,such as high-performance engines,softer alloys(brakes),and oil transport *** this aim was the goal of this ***,we needed to find an adequate irradiation line for the TLA ***,another technique/system was developed(the Attenuation Wheel),which would bring the depth of constant activation from 50μm to 300μm.

关键词： Thin layer activation Wear Proton beam Attenuation wheel

Norite and charnockites from the Venda Nova Pluton,SE Brazil:Intensive parameters and some petrogenetic constraints

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Geoscience Frontiers 2012年第6期3卷 789-800页

作者： julio cezar Mendes Cristina M.P.De Campos Departamento de Geologia IGEOUniversidade Federal do Rio de Janeiro21910-949Cidade UniversitariaRio de JaneiroBrazil Department of Earth and Environmental Sciences GeoCenterLudwig Maximillians UniversitatTheresienstrasse 41/III80333 MunichGermany

The Venda Nova Pluton （VNP） is a zoned ring structure emplaced in the southern portion of the Neoproterozoic Araquai Belt, in Espirito Santo, Brazil. It is a slightly westward tilted cylinder-like intrusion, with an almost circular horizontal section. In the center of this structure, an off-centered gabbro-noritic core, surrounded by syeno-monzonitic rocks, intrudes an outer ring of charnockites and norite. These envelop the syeno-monzonitic and gabbro-noritic center, as a narrow discontinuous belt. While, in the core intrusion, mingling and mixing processes are widespread and well documented in the literature, in the outer ring, the norite and charnockite layers show predominantly homogeneous and isotropic internal structures. Nevertheless, smaller interaction zones between charnockites and norite denote a comparatively more restricted mingling process. The norite is a fine-grained rock with hypidio- morphic granular to intergranular texture. The charnockites are medium-grained and made up of：（a） orthopyroxene-tonalite, （h） orthopyroxene-quartz-diorite, and （c） orthopyroxene-granodiorite with hy- pidiomorphic granular to porphyritic textures. In all lithotypes both ortho- and clinopyroxene are replaced by hornblende and biotite. Two contrasting compositional sequences have been recognized, based on whole rock geochemistry：（1） a basic, with tholeiitic affinities （norite） and, （2） an intermediate, medium-K calc-alkalinc, comprising the charnockites. Estimated crystallization temperatures, which have been calculated from micro-probe analysis of pyroxenes, range from 915± 25 ℃ to 960 ± 50 ℃. Re-equilibration temperature （ihnenite-magnetite calibration） is around 600 ~ 50 ℃. This indicates oxygen fugacities four order of magnitude below the FMQ-buffer and a reduced environment. Coeval pressure conditions estimated from the Al-content in hornblende range from 5.5 ± 0.6 kbar. Data obtained for the norite point toward an evolution from the partial melting of an anhydrous

关键词： Chamockites Petrology Intensive parametersVenda Nova Pluton Araqua~ Belt Southeast Brazil

A Scientometric Approach to Analyze Scientific Development on Renewable Energy Sources

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Journal of Data and Information Science 2021年第1期6卷 87-119页

作者： Jones Luís Schaefer julio cezar Mairesse Siluk Ismael Cristofer Baierle Elpidio Oscar Benitez Nara Universidade Federal de Santa Maria Avenida Roraima1000Santa Maria 97105-900Brazil Universidade de Santa Cruz do Sul Avenida Independencia2293Santa CruzRS 96815-900Brazil

Purpose: This paper aims to point out the scientific development and research density of renewable energy sources such as photovoltaic, wind, and biomass, using a mix of computational tools. Based on this, it was possible to verify the existence of new research trends and opportunities in a macro view regarding management, performance evaluation, and decision-making in renewable energy generation systems and ***/methodology/approach: A scientometric approach was used based on a research protocol to retrieve papers from the Scopus database, and through four scientometric questions, to analyze each area. Software such as the Science Mapping Analysis Software Tool(Sci MAT) and Sci2 Tool were used to map the science development and ***: The scientific development of renewable energy areas is highlighted, pointing out research opportunities regarding management, studies on costs and investments, systemic diagnosis, and performance evaluation for decision-making in businesses in these *** limitations: This paper was limited to the articles indexed in the Scopus database and by the questions used to analyze the scientific development of renewable energy *** implications: The results show the need for a managerial perspective in businesses related to renewable energy sources at the managerial, technical, and operational levels, including performance evaluation, assertive decision making, and adequate use of technical and financial ***/value: This paper shows that there is a research field to be explored, with gaps to fill and further research to be carried out in this area. Besides, this paper can serve as a basis for other studies and research in other areas and domains.

关键词： Solar energy Photovoltaic energy Wind energy Biomass energy Scientometrics

Methodology for ranking controllable parameters to enhance operation of a steam generator with a combined Artificial Neural Network and Design of Experiments approach

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能源与人工智能(英文) 2021年第1期3卷 9-21页

作者： Lara Werncke Vieira Augusto Delavald Marques Paulo Smith Schneider Antônio Joseda Silva Neto Felipe Antonio Chegury Viana Madhat Abdel-jawad Julian David Hunt julio cezar Mairesse Siluk Federal University of Rio Grande do Sul-UFRGS Porto AlegreBrazil State University of Rio de Janeiro-UERJ Nova FriburgoBrazil University of Central Florida OrlandoUCFUnited States Advanced Analysis Australia-AAA PerthAustralia International Institute for Applied Systems Analysis-IIASA ViennaAustria Federal University of Santa Maria-UFSM Santa MariaBrazil

The operation of complex systems can drift away from the initial design conditions,due to environmental condi-tions,equipment wear or specific *** generators are complex equipment and their proper opera-tion relies on the identification of their most relevant *** approach to rank the operational parameters of a subcritical steam generator of an actual 360 MW power plant is *** Artificial Neural Network-ANN delivers a model to estimate the steam generator efficiency,electric power generation and flue gas outlet temperature as a function of seven input *** ANN is trained with a two-year long database,with training errors of 0.2015 and 0.2741(mean absolute and square error)and validation errors of 0.32%and 2.350(mean percent and square error).That ANN model is explored by means of a combination of situations proposed by a Design of Experiment-DoE *** seven controlled parameters showed to be relevant to express both steam generator efficiency and electric power generation,while primary air flow rate and speed of the dynamic classifier can be neglected to calculate flue gas temperature as they are not statistically *** also shows the prominence of the primary air pressure in respect to the steam generator efficiency,electric power generation and the coal mass flow rate for the calculation of the flue gas outlet *** ANN and DoE combined methodology shows to be promising to enhance complex system efficiency and helpful whenever a biased behavior must be brought back to stable operation.

关键词： Coal-fired power plant Artificial Neural Network Design of Experiments Response surface methodology Steam generator

Effects of Inoculation of Rhizobium on Nodulation and Nitrogen Accumulation in Cowpea Subjected to Water Availabilities

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American Journal of Plant Sciences 2015年第9期6卷 1378-1384页

作者： Salomao Lima Guimaraes Edna Maria Bonfim-Silva julio cezar Fornazier Moreira Christiane Kamila Bosa Samara Loraine Soares da Silva Tonny José Araújo da Silva Department of Agricultural and Environmental Engineering Institute of Agricultural Sciences and TechnologyFederal University of Mato GrossoRondonópolisBrazil

With high protein content, the cowpea is one of the most widely consumed legumes in northeastern Brazil. This study was aimed to evaluate the rhizobia inoculation effect on nitrogen accumulation and nodulation in cowpea subjected to water availability. The experiment was conducted in a greenhouse, in a completely randomized design, with six water availabilities (40%, 60%, 80%, 100%, 120% and 140% of maximum soil water retention capacity), with four replications. Soil moisture maintenance was performed by gravimetric method. The BR3267 strain (Bradyrhizobium japonicum) recommended for cowpea grown in Brazil was used. At thirty-five days after treatments implementation, the nitrogen nutritional status was assessed through SPAD reading, shoot nitrogen concentration and total accumulation. Nodulation was assessed by nodules number and dry matter. The increased water availability provided negative effect on SPAD reading and shoots nitrogen concentration. Shoot nitrogen accumulation was favored to up to 78.8% water availability, with subsequent decline. Nodulation was favored when soil water availability was between 85% and 87%. Water availability affects nodulation and cowpea nutritional status, although negative effects are more pronounced when there is soil water excess.

关键词： Vigna unguiculata Inoculant Simbiosis Water

MALDI-TOF MS Assessment to Identify Environmental Mycobacteria

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Advances in Microbiology 2015年第9期5卷 620-629页

作者： Camilla Pereira de Paula Uzam Urze Adomaitis Brianesi Camila Romagnoli Karen Machado Gomes Rafael Silva Duarte Erica Chimara julio cezar Franco de Oliveira Marcelo Affonso Vallim Renata Castiglioni Pascon Cristina Viana-Niero Instituto de Ciencias Ambientais Químicas e Farmaceuticas da Universidade Federal de Sao Paulo Diadema Brasil Instituto de Ciências Ambientais Químicas e Farmacêuticas da Universidade Federal de Sao Paulo Diadema Brasil Instituto de Microbiologia Paulo de Góes da Universidade Federal do Rio de Janeiro Rio de Janeiro Brasil Núcleo de Tuberculose e Micobacterioses do Instituto Adolfo Lutz Sao Paulo Brasil

Over the past few decades, there has been a significant increase in the number of mycobacterial species described. Currently, the genus?Mycobacterium?consists of 170 species. Most species are called nontuberculous mycobacteria (NTM) and are potentially or rarely pathogenic and ubiquitous. One of the main challenges in mycobacteriology is the rapid and precise identification of these microorganisms. In this work, we compared two protein extraction protocols for the identification of 38 reference strains and clinical isolates, representing 27 species, by mass spectrometry (MALDI-TOF MS) to subsequently use the best method for identifying environmental mycobacteria. The results obtained with reference strains and clinical isolates showed that protocol A was effective in identifying 92.1% of mycobacterial specimens at the species level and protocol B, 50%. Therefore, protocol A was evaluated for the rapid identification of 27 environmental mycobacterial isolates. These isolates were subjected to PCR-restriction enzyme analysis (PRA-hsp65). Two isolates were misidentified by PRA-hsp65, whereas MALDI-TOF MS was able to identify them correctly. The results were confirmed by?hsp65 and 16S rRNA gene sequencing. Mass spectrometry has the advantage of being a simpler and faster technique than PRA-hsp65, and our results showed that MALDI-TOF MS is a valuable tool for the identification of environmental mycobacterial isolates.

关键词： MALDI-TOF MS Environmental Mycobacteria Identification PRA-Hsp65

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PNAS:科学家发现新的精子运动调节器

现代生物医学进展 2017年第27期17卷 I0001-I0002页

作者： Castaneda, julio M. Hua, Rong Miyata, Haruhiko Oji, Asami Guo, Yueshuai Cheng, Yiwei Zhou, Tao Guo, Xuejiang Cui, Yiqiang Shen, Bin Wang, Zibin Hu, Zhibin Zhou, Zuomin Sha, Jiahao Prunskaite-Hyyrylainen, Renata Yu, Zhifeng Ramirez-Solis, Ramiro Ikawa, Masahito Matzuk, Martin M. Liu, Mingxi Baylor Coll Med Dept Pathol & Immunol Houston TX 77030 USA Osaka Univ Res Inst Microbial Dis Suita Osaka 5650871 Japan Nanjing Med Univ State Key Lab Reprod Med Nanjing 210029 Jiangsu Peoples R China Nanjing Med Univ Dept Histol & Embryol Nanjing 210029 Jiangsu Peoples R China Osaka Univ Grad Sch Pharmaceut Sci Suita Osaka 5650871 Japan Nanjing Med Univ Anim Core Facil Nanjing 210029 Jiangsu Peoples R China Baylor Coll Med Ctr Reprod Med Houston TX 77030 USA Univ Oulu Fac Biochem & Mol Med FI-90014 Oulu Finland Baylor Coll Med Ctr Drug Discovery Houston TX 77030 USA Wellcome Trust Sanger Inst Hinxton CB10 1SA England Univ Tokyo Inst Med Sci Minato Ku Tokyo 1088639 Japan Baylor Coll Med Dept Mol & Cellular Biol Houston TX 77030 USA Baylor Coll Med Dept Mol & Human Genet Houston TX 77030 USA Baylor Coll Med Dept Pharmacol Houston TX 77030 USA

南京医科大学生殖医学国家重点实验室、基础医学院组织胚胎学系刘明兮课题组与贝勒医学院***课题组、大阪大学MasahitoIkawa课题组等共同解析了一个精子运动调节基因TCTE1，结果发表于《美国科学院院刊》（PNAs）。

关键词：精子运动调节器科学家国家重点实验室组织胚胎学课题组生殖医学医科大学