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Journal of Electromagnetic Analysis and Applications 2010年第1期2卷 7-17页

作者： Afonso josé do PRADO Sérgio KUROKAWA josé pissolato filho Luiz Fernando BOVOLATO 不详

Clarke’s matrix has been applied as a phase-mode transformation matrix to three-phase transmission lines substituting the eigenvector matrices. Considering symmetrical untransposed three-phase lines, an actual symmetrical three-phase line on untransposed conditions is associated with Clarke’s matrix for error and frequency scan analyses in this paper. Error analyses are calculated for the eigenvalue diagonal elements obtained from Clarke’s matrix. The eigenvalue off-diagonal elements from the Clarke’s matrix application are compared to the correspondent exact eigenvalues. Based on the characteristic impedance and propagation function values, the frequency scan analyses show that there are great differences between the Clarke’s matrix results and the exact ones, considering frequency values from 10 kHz to 1 MHz. A correction procedure is applied obtaining two new transformation matrices. These matrices lead to good approximated results when compared to the exact ones. With the correction procedure applied to Clarke’s matrix, the relative values of the eigenvalue matrix off-diagonal element obtained from Clarke’s matrix are decreased while the frequency scan results are improved. The steps of correction procedure application are detailed, investigating the influence of each step on the obtained two new phase-mode transformation matrices.

关键词： Clarke’s Matrix Eigenvector Eigenvalue Phase Mode Transformation Error Analysis Non Symmetrical Lines Frequency Dependent Parameters

Reducing Numerical Oscillations through Modified Circuits for Inclusion of Frequency Influence in Transmission Line Representation

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Journal of Energy and Power Engineering 2012年第11期6卷 1800-1808页

作者： Leonardo S. Lessa Afonso J. Prado Sdrgio Kurokawa Luiz F. Bovolato jos6 pissolato filho Transient Electromagnetic Studies Laboratory Department of Electrical Engineering UNESP--The University State of S6o Paulollha Solteira 15385-000 Brazil Department of Electrical Engineering UNICAMP The State University of Campinas Campinas 13083-970 Brazil

In this article, a transmission line is represented by a cascade of n circuits using a single phase. It is analyzed what is the reasonable number of n circuits and the number of blocks composed by parallel resistor and inductor in parallel for reduction of numerical oscillations. It is simulated the numerical routine with and without the effectof frequency in the longitudinal parameters. Initially, it is used to state variables and 7t circuits representing the transmission line composing a linear system which is solved by numerical routines based on the trapezoidal rule. The effect of frequency on the line is synthesized by resistors and inductors in parallel and this representation is analyzed in details. It is described as transmission lines and the frequency influence in these lines through the state variables.

关键词： Electromagnetic transient EMTP mathematical model simulation transmission lines n circuit numeric method wavetraveling.

Is There an Information Field in the Life World？ Empirical Approach Using Electrophotonic Analysis

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Journal of Life Sciences 2017年第4期11卷 191-201页

作者： Erico Azevedo jose pissolato filho Ontopsychology Department AMF Estrada Recanto Maestro 338 97200-000 Restinga Seca-RS Brazil Energy Systems Department FEEC/Unicamp Rua Albert Einstein 400 13083-852 Campinas-SP Brazil

This paper presents a brief review of distant biological communication phenomena, information fields explained as a transduction of information without energy displacement, experimental requirements for testing this hypothesis with human beings using electrophotonic analysis, oxymetry and electromagnetic shielding. Finally, authors present preliminary results and future work on this new field of interdisciplinary research.

关键词： Semantic fields eletrophotonic analysis quantum biocommunication information field hypothesis test.

The coppice-with-standards silvicultural system as applied to Eucalyptus plantations-a review

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Journal of Forestry Research 2014年第2期25卷 237-248页

作者： Antonio Carlos FERRAZ filho josé Roberto Soares SCOLFORO Blas MOLA-YUDEGO Departamento de Ciências Florestais Universidade Federal de Lavras (UFLA) School of Forest Sciences University of Eastern Finland (UEF)

We review the management of Eucalyptus species under a coppice-with-standards （CWS） silvicultural system. CWS management results in product diversification, permitting production of small and large scale timber from the same stand. Eucalyptus species are suitable candidates for CWS management because： there are large worldwide plantation areas, sprouting capacity is high, and eucalypts are multipur- pose species. We discuss （1） short rotation Eucalyptus coppice manage- ment for energy and pulping and （2） Eucalyptus seedling management for solid wood products. We review the literature and discuss experi- ences with Eucalyptus managed under the CWS system. We also assess projects dealing with Eucalyptus coppice management, stand density regulation, pruning, and stand and wood quality. The growth environ- ment of the standard trees （heavy competition up to the first harvest, free growth afterwards） coupled with long rotations （〉20 years） results in high quality logs for solid wood products. Early pruning should be ap- plied to enhance wood quality. We propose a system for the silvicultural management of Eucalyptus under the CWS system, elaborating on the consequences of initial planting density, site productivity, and standard tree densities as well as timing of basic silvicultural applications.

关键词： stand density regulation coppice management pruning silvicultural system stand production diversification CWS

Entropy model to assess sediment resuspension probability and trap efficiency of small dams

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International Journal of Sediment Research 2022年第5期37卷 675-686页

作者： Francisco Jairo Soares Pereira Antonio Viana da Silva filho josé Wellington Batista Lopes josé Carlos de Araújo Department of Agricultural Engineering Federal University of Ceará Campus Do Pici Rural Federal University of Pernambuco Federal University of Piauí

In the Brazilian drylands, there are tens of thousands of small dams. Despite their paramount importance to the rural population, they are rarely monitored. Water demand increases with time while, simultaneously, siltation reduces reservoir water capacity and availability. Reservoir siltation models are, therefore, mandatory to manage the numerous ungauged small dams in these *** objective of the current study is to improve sediment trap efficiency(TE) modeling by including resuspension as a key probabilistic process. The Shannon entropy was used to estimate the sediment resuspension probability, which was merged with the Camp model and generated the RETSED entropy model. To validate the RETSED model, an experimental check dam(ECD, 300 m3), located in the Gilbu es desertification site, Brazil, was monitored hourly during one hydrological year(July 2018-July 2019). Measurements show that the annual volumetric decline of the check dam was 12%; and that the average trap efficiency equaled 86%. Only 9.5% of the hourly sediment concentration outflow exceeded the average plus one standard deviation, showing that the reservoir is well mixed; a fact which highlights the relevance of the resuspension process. Three empirical models failed to mimic the experimental results: Churchill(TE = 99%), Brune(TE = 75%), and Maryland(TE = 94%). According to the RETSED entropy model, the resuspension probability during the experiment was 10%and TE = 81%, a value only 6% below the measured one. The Camp model simulated TE = 89%, only 3%higher than the measured value, but confirmed the Camp model’s tendency to overestimate TE due to a disregard of resuspension. The deterministic model showed low sensitivity concerning the hydrodynamic effects, whereas the entropy formulation proved to be more consistent with physical behavior: the resuspension probability clearly increased and trap efficiency decreased with rising reservoir discharge.

关键词： Erosion Check dam Sedimentation Ungauged basins Camp model

Non-invasive diagnosis of liver fibrosis in chronic hepatitis C

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World Journal of Gastroenterology 2014年第11期20卷 2854-2866页

作者： Leonardo de Lucca Schiavon Janaína Luz Narciso-Schiavon Roberto josé de Carvalho-filho Gastroenterology Division Department of Internal MedicineFederal University of Santa CatarinaFlorianópolisSC 88040-900Brazil Gastroenterology Division Department of MedicineFederal University of Sao PauloSao PauloSP 04023-900Brazil

Assessment of liver fibrosis in chronic hepatitis C virus(HCV)infection is considered a relevant part of patient care and key for decision *** liver biopsy has been considered the gold standard for staging liver fibrosis,it is an invasive technique and subject to sampling errors and significant intra-and inter-observer *** the last decade,several noninvasive markers were proposed for liver fibrosis diagnosis in chronic HCV infection,with variable *** the clear advantage of being noninvasive,a more objective interpretation of test results may overcome the mentioned intra-and inter-observer variability of liver *** addition,these tests can theoretically offer a more accurate view of fibrogenic events occurring in the entire liver with the advantage of providing frequent fibrosis evaluation without additional ***,in general,these tests show low accuracy in discriminating between intermediate stages of fibrosis and may be influenced by several hepatic and extrahepatic *** methods are either serum markers(usually combined in a mathematical model)or imaging modalities that can be used separately or combined in algorithms to improve *** this review we will discuss the different noninvasive methods that are currently available for the evaluation of liver fibrosis in chronic hepatitis C,their advantages,limitations and application in clinical practice.

关键词： Liver fibrosis Liver cirrhosis Hepatitis C Diagnosis Elasticity imaging techniques

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

Differences in viral kinetics between genotypes 1 and 3 of hepatitis C virus and between cirrhotic and non-cirrhotic patients during antiviral therapy

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World Journal of Gastroenterology 2006年第45期12卷 7271-7277页

作者： josé Eymard Medeiros-filho Isabel Maria Vicente Guedes de Carvalho Mello Joo Renato Rebello Pinho Avidan U Neumann Fernanda de Mello Malta Luiz Caetano da Silva Flair josé Carrilho Hepatology Branch Department of Gastroenterology University of So Paulo School of Medicine So Paulo Brazil Viral Immu-nology Laboratory Instituto Butantan So Paulo Brazil Hepatology Branch Department of Gastroenterology University of S?o Paulo School of Medicine So Paulo Brazil Faculty of Life Sciences Bar-Ilan Univer-sity Ramat-Gan Israel Virology Branch Instituto Adolfo Lutz So Paulo Brazil

AIM： TO evaluate the impact of hepatitis C virus （HCV） infection with genotype 1 or 3 and the presence or absence of liver cirrhosis （LC） in the early viral kinetics response to treatment. METHODS： Naive patients （n = 46） treated with interferon-α （IFN-α） and ribavirin and followed up with frequent early HCV-RNA determinations were analysed. Patients were infected with genotype 1 （n = 28, 7 with LC） or 3 （n = 18, 5 with LC）. RESULTS： The first phase decline was larger in genotype 3 patients than in genotype 1 patients （1.72 vs 0.95 log IU/mL, P 〈 0.001）. The second phase slope decline was also larger in genotype 3 patients than in genotype 1 patients （0.87 vs 0.15 log/wk, P 〈 0.001）. Differences were found in both cirrhotic and non-cirrhotic patients. Genotype 1 cirrhotic patients had a slower 2^nd phase slope than non-cirrhotic patients （0.06 vs 0.18 log/wk, P 〈 0,02）. None of genotype 1 cirrhotic patients had a 1^st phase decline larger than 1 log （non-cirrhotic patients： 55%, P 〈 0.02）. A similar trend toward a slower 2nd phase slope was observed in genotype 3 cirrhotic patients but the 1^st phase slope decline was not different. Sustained viral response was higher in genotype 3 patients than in genotype 1 patients ,（72% vs 14%, P 〈 0.001） and in genotype 1 non-cirrhotic patients than in genotype 1 cirrhotic patients （19% vs 0%）. A second phase decline slower than 0.3 log per week was predictive of non-response in all groups. CONCLUSION： Genotype 3 has faster early viral decline than genotype 1. Cirrhosis correlates with a slower 2nd phase decline and possibly with a lower 1^st phase slope decline in genotype 1 patients.

关键词： Hepatitis C virus Treatment Early kinetics Cirrhosis Genotypes

Adipose-derived stem cells and knee osteoarthritis:New perspectives,old concerns

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World Journal of Orthopedics 2024年第11期15卷 1001-1006页

作者： Eduardo B de Sousa joséPaulo A Gabbi filho Vinicius S Gameiro Leandra S Baptista Department of General and Specialized Surgery Fluminense Federal UniversityRio de Janeiro 24070-090Brazil Department of Orthopaedics Quinta D’Or HospitalRio de Janeiro 20941-150Brazil Duque de Caxias Campus Prof Geraldo Cidade Federal University of Rio de JaneiroRio de Janeiro 25065-050Brazil

In this editorial,we comment on the paper by Muthu et al published in the recent issue of the *** editorial review focusses on the use of adipose-derived stem cells(ADSCs)in knee osteoarthritis *** discuss the differences between the stromal vascular fraction and microfragmented adipose tissue and highlight the results of clinical studies comparing both treatments and the use of hyaluronic acid,platelet-rich plasma,and bone marrow aspirate *** use of expanded ADSCs is also discussed;moreover,concerns regarding treatment with ADSCs,particularly the heterogeneity of published studies and the need to standardize protocols to explore clinical potential is explored.

关键词： Adipose tissue Adipose-derived stem cells Stromal vascular fraction Knee Osteoarthritis Microfragmented adipose tissue

Microphysical and Dynamical Climatology of Precipitating Systems Inferred by Weather Radar Polarimetric Measurements in Brazil

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Open Journal of Modern Hydrology 2022年第2期12卷 74-93页

作者： Augusto josé Pereira filho Felipe Vemado Departamento de Ciê ncias Atmosféricas Instituto de Astronomia Geofísica e Ci&#234 ncias Atmosféricas Universidade de Sã o Paulo S&#227 o Paulo Brazil

This work presents the climatology of the microphysics and the dynamics of weather systems in two coastal areas of São Paulo and the Espírito States at high spatial-temporal resolution as measured by two dual Doppler weather radars during the summer and early fall of 2015. Averages and respective standard deviations of polarimetric variables, namely, reflectivity (Z), differential reflectivity (ZDR), differential phase (ϕDP), specific differential phase (KDP), copolar correlation coefficient (ρoHV), radial velocity (Vr), and the spectral width (W) were obtained within a 240-km range on plan position indicator (PPI), constant altitude plan position indicator (CAPPI) and vertical cross-sections to analyze overall horizontal and vertical precipitation microphysics and mesoscale circulation of prevailing weather systems, and their peculiarities over coastal and oceanic, and urban and rural areas. Overall, raindrops tend to be larger over the Metropolitan area of São Paulo from the surface to up to 6 km altitude indicating more vigorous updrafts caused by the heat island effect and the local sea breeze. The vertical microphysical structure is remarkably distinct over the Metropolitan Area of São Paulo (MASP) where thunderstorms can reach 20-km altitude in summertime under sea breeze and heat island effects. On the other hand, there is a dominancy of smaller drop sizes though larger ones observed close to the surface by the coast of Espírito Santo and at the land-ocean interface influenced by the local low-level jet and oceanic-type CCN. Convective cells tend to be smaller associated with Easterlies and more organized with Westerlies. The results indicate distinct features on hydrometeor types and circulation characteristics under these different surface and boundary-layer conditions in close agreement with previous results in the literature.

关键词： Dual Doppler Weather RADAR Microphysics Climatology Atlantic Ocean