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Mean Kinematic Characteristics of Synoptic Easterly Disturbances over the Atlantic

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Advances in Atmospheric Sciences 2010年第3期27卷 483-499页

作者： Arona DIEDHIOU luiz A.T.machado Henri LAURENT IRD/LTHE BP 5338041Grenoble Cedex 9France CPTEC/INPE Rod.Pdt.Dutra Cachoeira PaulistaSPBrasil

This study investigates the mean kinematic characteristics of the tropical Atlantic easterly disturbances in January-March （JFM）, April-June （AM J）, July-September （JAS） and October-December （OND） from 1968-1998. For each season, the preferential tracks of these disturbances in the 3--10-day band periods were computed and spatialized, as well as their associated wavelength, velocity and main period, which lies between 3-5 days and between 6-9 days depending on the track and the season. Two main tracks are highlighted over the Atlantic Ocean. During OND and JFM these two tracks are well separated and located in each hemisphere around 15°S and 12.5°N. From AMJ to JAS these tracks migrate northward; in JAS, they merge into one over the northern tropical Atlantic along 17.5°N. The associated wavelength fields exhibit a meridional gradient, with large wavelengths （greater than 4000 km） around the equator, between 5°N and 5°S, and smaller wavelengths outside of this latitude band （between 2500-3500 kin）. The phase speed is also found to exhibit poleward decreasing values from 12-6 m s^-1. Over the north Atlantic track, 6-9-day disturbances were found to occur from January to May and approximately from October to December. From June to September, the 3-5-day waves dominate the synoptic activity. Over the south Atlantic track, between May and August the synoptic variability is mainly explained by the 3-5-day disturbances but from January to April and from September to December both 3-5-day waves and 6-9-day waves can occur.

关键词： synoptic activity African easterly waves tropical Atlantic

Radiographic and tomographic description of marlin sucker Remora osteochir, Pisces: Echeneidae—preliminary data of one specimen

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Marine Life Science & Technology 2020年第3期2卷 246-251页

作者： Andréluiz Veiga Conrado Renata Stecca lunes Carlos eduardo Malavasi Bruno Aline Tiemi Shiraishi Rocha JoséRoberto machado Cunha da Silva Laboratory of Evolutive Histophysiology Department of Cell and Developmental BiologyInstitute of Biomedical SciencesUniversity of Sao PauloAvenida ProfLineu Prestes1524Cidade UniversitariaSao Paulo 05508-000Brazil Laboratory of Immunological Techniques Applied to Morphophysiology School of Veterinary Medicine and Animal ScienceDepartment of SurgeryUniversity of Sao PauloAvenida Prof.Di.Orlando Marques de Paiva87.Cidade UniversitariaSao Paulo 05508-270Brazil

Remoras are commensal fish of various marine species,such as sharks,swordfishes,turtles,dolphins,manta rays and *** specimen of marlin sucker Remora osteochir was evaluated using computed tomography for skeletal digital reconstruction,digital radiology for general evaluation and bone counting,and the double contrast technique to distinguish coelomic *** radiographic images,it was possible to observe otoliths in the center of the neurocranium,to count 27 vertebrae,nine pairs of ribs,and to detect the presence of the hipural and epural bones near of the caudal *** double contrast images,it was possible to visualize the swim bladder,gills,heart,liver,stomach and *** the tomographic images and reconstructions,it was possible to identify the intercalar bones of the cephalic disc;the spine with vertebral bodies composed of neural arches and ventral ribs;and the pectoral girdle formed by posttemporal,cleithrum and scapulocoracoid *** was concluded that digital radiology and computed tomography were able to describe anatomical structures of marlin sucker *** without the need for dissection.

关键词： Teleost fish Double contrast Computed tomography Digital radiology Skeleton

Dendritic Growth, Eutectic Features and Their Effects on Hardness of a Ternary Sn–Zn–Cu Solder Alloy

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Acta Metallurgica Sinica(English Letters) 2017年第6期30卷 528-540页

作者： Bismarck luiz Silva Rodrigo Valenzuela Reyes Amauri Garcia Joséeduardo Spinelli Department of Materials Engineering Federal University of Rio Grande do Norte-UFRNNatalRN 59078-970Brazil Department of Materials Engineering Federal University of Sao Carlos-UFSCarSao CarlosSP 13565-905Brazil Department of Manufacturing and Materials Engineering University of CampinasUNICAMPCampinasSP 13083-860Brazil

The present investigation is based on the results of a directionally solidified （DS） Sn-9 wt%Zn-2 wt%Cu alloy, including primary/secondary/tertiary dendrite arm spacings of the Sn-rich matrix, the morphologies of the eutectic mixture and the corresponding interphase spacing, the nature and proportion of the Cu-Zn intermetallic compound （IMC）. The main purpose is to establish interrelations of these microstructure features with experimental solidification thermal parameters, such as cooling rates and growth rates （v）, macrosegregation and hardness. Such interrelations are interesting for both industry and academy since they represent a tool permitting the preprogramming of final properties based on the design of the microstructure. In the case of Sn-Zn-Cu alloys, hardly anything is known about the combined effects of the length scale of the microstructure and fraction and distribution of the primary IMC on hardness. The alloy microstructure is composed of a β-Sn dendritic region, surrounded by a eutectic mixture of α-Zn and β-Sn phases and the γ-Cu5Zn8 IMC. The eutectic interphase spacing varies in the range 1.2-3.6 μm, with the α-Zn phase having a globular morphology for ν 〉 0.5 mm/s and a needle-like morphology for ν 〈 0.3 mm/s. A modified Hall-Petch-type experimental expression relating hardness to the interphase spacing is proposed.

关键词： Sn-Zn-Cu solder alloy Solidification Microstructure Eutectic morphology Hardness

Proactive reconciliation as a tool for integrating mining and milling operations

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International Journal of Mining Science and Technology 2019年第2期29卷 239-244页

作者： Ana Carolina Chieregati luiz eduardo Campos Pignatari Francis Fernand Pitard Homero Delboni Jr Department of Mining and Petroleum Engineering University of Sao Paulo EDEM Engenharia Mineral Francis Pitard Sampling Consultants

Historically, reconciliation has been viewed as a quality test of model estimates as well as a powerful tool for detecting and correcting problems in all stages of mine operations from resource estimation to metal production. If used correctly, reconciliation helps to better predict the life of mine(LOM), improves the adherence of production plans to the respective budget, and allows for effective control of the mining and milling processes. However, the accuracy of reconciliation results requires that all input data must be generated in accordance with the principles of sampling correctness. Furthermore, complete reconciliation systems can become extremely complex and must be carefully analyzed in order to provide realistic and helpful conclusions. Based on these concepts, this paper presents a successful proactive reconciliation system applied to a copper and gold mine in Brazil for monitoring and integrating mining and milling operations.

关键词： Reconciliation Prognostication Sampling Gold Copper

Zeta potential measurement on lithium lanthanum titanate nanoceramics

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Particuology 2016年第1期14卷 69-72页

作者： Carlos Ricardo Milian Pila eduardo Perez Cappe Yodalgis Mosqueda Laffita Oswaldo luiz Alves Institute of Materials Science and Technology (IMRE) Havana University Havana CP 10400 Cuba Solid state Chemistry Laboratory Institute of Chemistry Campinas University Campinas CP 13083-970 SP Brazil

The zeta potential, isoelectric point, and agglomeration of ***3 （LLTO） nanoparticles dispersed in aqueous media at different ionic strengths have been studied. The zeta potential was determined from electrophoretic mobility measurements, according to Smoluchowski＇s equation, for Li0.5La0.5TiO3 suspen- sions in NaCl and KCI electrolytes with ionic strengths of 1, 10, and 100 mmol/dm3. The isoelectric point （IEP）, zeta potential （ζ）, and the agglomeration were shown to strongly depend on the ionic strength of the Li0.5La0.5TiO3 aqueous colloidal suspension in both NaCI and KCI electrolytes, which allows the deter- mination of the effects of environmental conditions for ***3 manipulation in aqueous colloidal systems. The suspensions of Li0.5La0.5TiO3 nanoparticles reach the IEP in the pH range 0f3-5. The （ of Li0.5La0.5TiO3 nanoparticles varied from positive to negative values with a pH increase, which allows for the control of the surface charge depending on the purpose. The pH range of 7-g and an ionic strength ≤1 mmol/dm3 are recommended as the most suitable conditions for both the LLTO colloidal shaping techniques application and the LLTO-based nanocomposite formation.

关键词： Titanate Nanoparticles Zeta potential Colloidal suspension

Biliary tract reconstruction using jejunal tube:an experimental study in dogs

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Hepatobiliary & Pancreatic Diseases International 2009年第2期8卷 179-185页

作者： Eliane Anrain Trentini eduardo Crema Juan Carlos Llanos Mauro Masson Lerco luiz Alberto Magna luiz Sergio Leonardi State University of Campinas Faculty of Medical SciencesDepartment of Surgery Federal University of Triangulo Mineiro So Paulo State University "Júlio de Mesquita Filho" Faculty of Medicine of BotucatuDepartment of Surgery and Orthopedics

BACKGROUND:To physiologically reconstruct the biliary tract,Crema et al suggested the application of the Monti principle to the biliary tract,already used in humans for the urinary *** this technique,a jejunal segment is transversely *** study aimed to evaluate the efficacy of jejunal tube interposition between the common bile duct and duodenum in ***:Thirteen dogs underwent a laparoscopic common bile duct ligature,followed by a biliodigestive connection by jejunal tube interposition after one *** levels of glutamic-pyruvic and glutamic-oxalacetic transaminases,total bilirubins,alkaline phosphatase and gamma-glutamyltransferase were assessed before surgery and thereafter weekly until euthanasia,which was performed 6 weeks after biliodigestive ***:Data on 9 dogs were analyzed *** dogs presented with obstructive jaundice after common bile duct ligature,as confirmed by biochemical *** showed a statistically significant reduction in cholestasis after biliodigestive connection by jejunal tube interposition and were healthy until the end of the ***:A statistically significant reduction was seen in total bilirubin and canalicular enzymes(alkaline phosphatase and gamma-glutamyltransferase)in the 9 dogs 6 weeks after biliodigestive connetion by jejunal tube interposition.

关键词： biliary tract surgical procedures monti principle obstructive jaundice

Mapping fractional landscape soils and vegetation components from Hyperion satellite imagery using an unsupervised machinelearning workflow

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International Journal of Digital Earth 2018年第7期11卷 670-690页

作者： Michael J.Friedel Massimo Buscema luiz eduardo Vicente Fabio Iwashita Andréa Koga-Vicente Hydrogeology Department GNS ScienceLower HuttNew Zealand Mathematical&Statistical Sciences University of ColoradoDenverCOUSA Semeion Institute RomeItaly Satellite Monitoring Unit Brazilian Corporation of Agricultural Research-EMBRAPACampinasBrazil Earth Sciences Department University of FlorenceFlorenceItaly Center for Meteorological and Climatological Research in Agriculture University of CampinasCampinasBrazil

An unsupervised machine-learning workflow is proposed for estimating fractional landscape soils and vegetation components from remotely sensed hyperspectral *** workflow is applied to EO-1 Hyperion satellite imagery collected near Ibirací,Minas Gerais,*** proposed workflow includes subset feature selection,learning,and estimation *** training with landscape feature class realizations provide a hypersurface from which to estimate mixtures of soil(e.g.0.5 exceedance for pixels:75%clay-rich Nitisols,15%iron-rich Latosols,and 1%quartz-rich Arenosols)and vegetation(e.g.0.5 exceedance for pixels:4%Aspen-like trees,7%Blackberry-like trees,0%live grass,and 2%dead grass).The process correctly maps forests and iron-rich Latosols as being coincident with existing drainages,and correctly classifies the clay-rich Nitisols and grasses on the intervening *** classifications are independently corroborated visually(Google Earth)and quantitatively(random soil samples and crossplots of field spectra).Some mapping challenges are the underestimation of forest fractions and overestimation of soil fractions where steep valley shadows exist,and the under representation of classified grass in some dry areas of the Hyperion *** preliminary results provide impetus for future hyperspectral studies involving airborne and satellite sensors with higher signal-to-noise and smaller footprints.

关键词： Hyperspectral machine learning remote sensing soils and vegetation unsupervised workflow

Punica granatum leaves as a source of active compounds:A review of biological activities,bioactive compounds,food,and technological application

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Food Bioscience 2023年第1期51卷 2-13页

作者： Janaína Carla Barbosa machado Magda Rhayanny Assunçao Ferreira luiz Alberto Lira Soares Pharmacognosy Laboratory Department of Pharmaceutical SciencesFederal University of PernambucoRecifePEBrazil Post-Graduate Program in Pharmaceutical Sciences Federal University of PernambucoRecifePEBrazil

Punica granatum *** a medicinal plant from the Mediterranean,used for treating infectious and inflammatory *** leaves correspond to a non-edible part of the tree that is used for medicinal purposes but still,is a non-explored material for the development of technological food and pharmaceutics products although,it has therapeutic and bioactive *** on this,the current review was carried out by searching for scientific articles written in English,available on the“PubMed”and“ScienceDirect”databases and published in the last ten ***-nine articles were selected whose main study was the leaves of *** and its medicinal use,therapeutic activities,and technological *** its medicinal use,the *** leaves show antioxidant,anti-inflammatory,antimetabolic,anticancer,and antimicrobial *** potential is normally related to the presence of secondary metabolites,mainly phenolic compounds,tannins and their monomers(ellagic acid and gallic acid).Besides that,the lipophilic compounds present in the *** leaves prove to be important to some activities or contribute as support in the activity related to *** the ease of cultivation and adaptation of the species,combined with the potential availability of raw material,reinforces that the leaves of *** may play a relevant role as a source of bioactive compounds and can be exploited for the development of food and pharmaceutical products.

关键词： Food supplement Pomegranate Polyphenols Tannins Therapeutic potential

Co-Simulation of an SRG Wind Turbine Control and GPRS/EGPRS Wireless Standards in Smart Grids

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IEEE/CAA Journal of Automatica Sinica 2021年第3期8卷 656-663页

作者： Andre luiz de Oliveira Carlos eduardo Capovilla Ivan Roberto Santana Casella JoséLuis Azcue-Puma Alfeu J.Sguarezi Filho University of Sao Paulo Sao Paulo 05508-010Brazil Federal University of ABC Santo Andre 09210-580Brazil

Wind energy can be considered a push-driver factor in the integration of renewable energy sources within the concept of smart *** its full deployment,it requires a modern telecommunication infrastructure for transmitting control signals around the distributed generation,in which,the wireless communication standards stand out for employing modern digital modulation and coding schemes for error correction,in order to guarantee the power plant *** some developing countries,such as Brazil,the high penetration of commercial mobile wireless standards GPRS and EGPRS(based on GSM technology)have captivated the interests of the energy sector,and they now seek to perform remote monitoring and control *** this context,this article presents a comparative performance analysis of a wireless control system for a wind SRG,when a GPRS or EGPRS data service is *** system performance is analyzed by co-simulations,including the wind generator dynamics and the wireless channel *** satisfactory results endorse the viability and robustness of the proposed system.

关键词： General packet radio service(GPRS)/enhanced GPRS(EGPRS) smart grids switched reluctance generator(SRG) wind energy wireless communications