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Comparison between Fourier and Wavelets Transforms in Biospeckle signals

Applied Mathematics 2013年第11期4卷 11-22页

作者： Kleber Mariano Ribeiro Roberto Alves.braga Júnior Thelma sáfadi Graham Horgan Biomathematics and statistics scotland Rowett Institute of Nutrition and Health Aberdeen Scotland Engineering Department Federal University of Lavras Lavras Brazil Exact science Department Federal University of Lavras Lavras Brazil

The dynamic speckle is a non-destructive optical technique that has been used as a tool for the characterization of the biological activity and several studies are conducted to obtain for more information about the correspondence of the observed phenomena and their expressions in the interference images. Analysis in the frequency domain has been considered as powerful alternative, and although there are works using Fourier transform in the frequency analysis of the biospeckle signals, the majority presents the wavelet transform as tool for spectral analysis. In turn, there are still doubts if the Fourier transform is not enough for the analysis of the biospeckle, which would enable the reduction of processing time since an operation is computationally simpler. In this context, the present study aims to compare the constituents’ parts of the speckle signal according to Fourier and wavelet transforms for numerical analysis. The comparative analysis based on the absolute values of the differences technique (AVD) was carried out for performance evaluation of the Fourier and wavelet transforms, in which the speckle signals were decomposed spectrally and subsequently reconstructed with the elimination of specific frequency bands. Results showed that the wavelet transform allowed more information about signals constituents of the dynamic speckle, emphasizing its use instead of the Fourier transform, which in turn was restricted the situations in which the only interest is to know the spectral content of the data.

关键词： spectral Analysis Dynamic speckle Biological Activity

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Therapeutic effectiveness of a single exercise session combined with WalkAide functional electrical stimulation in post-stroke patients:a crossover design study

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Neural Regeneration Research 2021年第5期16卷 805-812页

作者： Viviane Rostirola Elsner Lucieli Trevizol Isadora de Leon Marcos da silva ThaynáWeiss Milena braga Daniela Pochmann Amanda stolzenberg Blembeel Caroline Dani Elenice Boggio Curso de Fisioterapia do Centro Universitário Metodista-IPA Porto AlegreRSBrasil Programa de Pós-Graduação em Biociências e Reabilitação do Centro Universitário Metodista-IPA Porto AlegreRSBrasil Programa de Pós-Graduação em Ciências Biológicas:Fisiologia Universidade Federal do Rio Grande do SulPorto AlegreRSBrasil

A growing body of evidence has suggested that the imbalance of epigenetic markers and oxidative stress appears to be involved in the pathophysiology and progression of ***,strategies that modulate these biomarkers might be considered targets for neuroprotection and novel therapeutic opportunities for these *** exercise has been reported to induce changes in these epigenetic markers and improve clinical outcomes in different ***,little is reported on this in post-stroke *** purpose of this study was to investigate the effect of a single exercise session with WalkAide functional electrical stimulation(FEs)on cognitive performance,clinical functional parameters,oxidative stress and epigenetic modulation in post-stroke *** this crossover design study,12 post-stroke individuals aged 54–72 years of either sexes were included and subjected to a single session of exercise(45 minutes)without WalkAide functional electrical stimulation(EXE alone group),followed by another single session of exercise(45 minutes)with WalkAide functional electrical stimulation(EXE+FEs group).The clinical functional outcome measures,cognitive performance and blood collections for biomarker measurements were assessed pre-and *** intervention,higher Berg Balance scale scores were obtained in the EXE+FEs group than in the EXE alone *** was no significant difference in the Timed Up and Go test results post-intervention between EXE alone and EXE+FEs *** intervention,a better cognitive performance was found in both groups compared with before the *** intervention,the Timed Up and Go test scores were higher in the EXE+FEs group than in the EXE alone *** addition,the intervention induced lower levels of lipid *** intervention,carbonyl level was lower,superoxide dismutase activity and superoxide dismutase/catalase activity ratio were higher in the EXE+FEs group,compared with the

关键词： cognition epigenetic exercise functional electrical stimulation functional mobility oxidative stress stroke WalkAide

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Phytotoxic effect of sesbania virgata(Cav.) *** seeds of agronomic and forestry species

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Journal of Forestry Research 2015年第2期26卷 339-346页

作者： Vera Lygia El Id Bárbara Vale da Costa Daiane salete Broch Mignoni Marina Belloni Veronesi Kelly simoes Marcia Regina braga Nelson Augusto dos santos Junior seed Department Institute of Botany Plant Physiology and Biochemistry Department Institute of Botany

sesbania virgata（Cav.） *** a pioneer species native to south America able to release allelochemicals that affect germination and development of other plant *** aim of this work was to evaluate the allelopathic effect of *** on the germination and development of co-occurring species from gallery forest and on agronomic *** forest native species,Enterolobium contortisiliquum（Vell.） Morong and sapindus saponaria L.,and two agronomic species（these as control）,Oryza sativa *** solanum lycopersicum *** used in the lab and greenhouse assays with seeds and leaf extracts of *** species were more affected than native species when co-germinated with seeds of *** germination percentage and speed germination index of the agronomic species were reduced in both in vitro and greenhouse *** the same assays,the seeds of native species showed no significant differences in the parameters ***,the initial growth of the four species assayed was affected,with reduction in plant length and shoot diameter followed by significant reduction in plantlet shoot and root *** the assays with irrigation of *** leaf extracts,no significant inhibitory effects on germination were observed for all *** and shoot diameter of the native species were not affected by the leaf extracts,nor were fresh and dry ***,these parameters increased in the agronomic species as they were irrigated with leaf *** on our data we conclude that seed leachates of *** affect germination and seedling development of other species,suggesting that its invasive behavior is due mainly to seed *** with less pronounced effects on native species,allelopathy of *** might also influence Interspecific competition in its natural environment.

关键词： Allelochemicals Allelopathy Catechin Fabaceae Gallery forest

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scoping review on vector-borne diseases in urban areas:transmission dynamics,vectorial capacity and co-infection

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Infectious Diseases of Poverty 2018年第1期7卷 916-939页

作者： Marcus Eder Fanny Cortes Noemia Teixeira de siqueira Filha Giovanny Vinicius Araujo de Franca stephanie Degroote Cynthia braga Valery Ridde Celina Maria Turchi Martelli Public Health England sierra Leone Country Office FreetownSierra Leone Aggeu Magalhaes Institute(IAM)/Oswaldo Cruz Foundation(Fiocruz) Avenida Professor Moraes Regos/n.Cidade Universitaria.CEP 50RecifePernambuco 740-465Brazil Universidade de Pernambuco(UPE) RecifePernambucoBrazil Liverpool school Of Tropical Medicine(LsTM) LondonUK secretariat of Health surveillance Ministry of HealthBrasiliaBrazil University of Montreal school of Public Health(EsPUM) MontrealQuebecCanada IRD(French Institute For Research on sustainable Development) CEPED(IRD-UniversiteParis Descartes)Universites Paris Sorbonne CitesERL INSERM SAGESUDParisFrance

Background:Transmission dynamics,vectorial capacity,and co-infections have substantial impacts on vector-borne diseases(VBDs)affecting urban and suburban *** key factors can provide insight into priority research areas and offer suggestions for potential *** body:Through a scoping review,we identify knowledge gaps on transmission dynamics,vectorial capacity,and co-infections regarding VBDs in urban ***-reviewed and grey literature published between 2000 and 2016 was *** screened abstracts and full texts to select *** an extraction grid,we retrieved general data,results,lessons learned and recommendations,future research avenues,and practice *** classified studies by VBD and country/continent and identified relevant knowledge *** 773 articles selected for full-text screening,50 were included in the review:23 based on research in the Americas,15 in Asia,10 in Africa,and one each in Europe and *** largest body of evidence concerning VBD epidemiology in urban areas concerned dengue and *** arboviruses covered included chikungunya and West Nile virus,other parasitic diseases such as leishmaniasis and trypanosomiasis,and bacterial rickettsiosis and *** articles retrieved in our review combined transmission dynamics and vectorial capacity;only two combined transmission dynamics and *** review identified significant knowledge gaps on the role of asymptomatic individuals,the effects of co-infection and other host factors,and the impacts of climatic,environmental,and socioeconomic factors on VBD transmission in urban *** included the trade-off from narrowing the search strategy(missing out on classical modelling studies),a lack of studies on co-infections,most studies being only descriptive,and few offering concrete public health *** research is needed on transmission risk in homes and workplaces,given increasingly dynamic and mobil

关键词： Arboviruses Disease vectors Coinfection Urban population Epidemiology Review

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Commercial Laundry Water Characterisation

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American Journal of Analytical Chemistry 2014年第1期5卷 8-16页

作者： J.K.braga M.B.A.Varesche Department of Hydraulics and sanitation Engineering School of Sao CarlosS?o Paulo UniversitySao CarlosBrazil

surfactants are the major active ingredients of laundry detergents. Therefore, special attention should be focused on the treatment and disposal of laundry wastewater. The aim of this study was to characterise the wastewater from a commercial laundry over 30 days. Physicochemical analyses were performed, monitoring the content of nitrogen, phosphate, heavy metals, linear alkylbenzene sulphonate (LAs), volatile organic acids and alcohols. The pH was approximately 5.6 and the COD approximately 4800 mg·L-1. The average concentrations of sulphate, sulphide, N-ammoniacal organic nitrogen compounds and heavy metals were below the maximum limit, in accordance with local and national environmental legislation, and the average total suspended solids was 0.08 g·L-1. Among the metals analysed, iron was observed with the highest concentrations (0.037 mg·L-1 and 0.72 mg·L-1). Phosphate was detected in 93% of samples (94.65 mg·L-1 average). LAs was detected in all samples (12.24 mg·L-1 to 1023.7 mg·L-1). Thirty-three different xenobiotic organic compounds were identified in the laundry wastewater with the qualitative screening. The major groups of the compounds were fragrances, preservatives, solvents and some surfactants. Although the characterisation indicated low values for many parameters, this does not eliminate the need for specific treatment before its disposal at the sewage system.

关键词： Greywater Linear Alkylbenzene sulphonate Legislation Xenobiotic Organic Compound Heavy Metal

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Endoscopic ultrasound fine needle aspiration vs fine needle biopsy in solid lesions:A multi-center analysis

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World Journal of Clinical Cases 2021年第34期9卷 10507-10517页

作者： Diogo Turiani Hourneaux Moura Thomas R McCarty Pichamol Jirapinyo Igor braga Ribeiro Galileu Ferreira Ayala Farias Antonio Coutinho Madruga-Neto Marvin Ryou Christopher C Thompson Gastrointestinal Endoscopy Unit University of Sao Paulo School of MedicineSão PauloSP 05403-010Brazil Division of Gastroenterology Hepatology and EndoscopyBrigham and Women’s HospitalHarvard Medical SchoolBostonMA 02115United States Division of Gastrointestinal Endoscopy University of São Paulo Medical SchoolSão PauloSP 01246-903Brazil

BACKGROUND While endoscopic ultrasound(EUs)-guided fine needle aspiration(FNA)is considered a preferred technique for tissue sampling for solid lesions,fine needle biopsy(FNB)has recently been *** To compare the accuracy of FNB vs FNA in determining the diagnosis of solid *** A retrospective,multi-center study of EUs-guided tissue sampling using FNA vs FNB *** outcomes included diagnostic test characteristics(i.e.,sensitivity,specificity,accuracy),use of rapid on-site evaluation(ROsE),and adverse *** analyses were performed by type of lesion and diagnostic yield with or without ROsE.A multivariable logistic regression was also *** A total of 1168 patients with solid lesions(n=468 FNA;n=700 FNB)underwent EUs-guided *** age was 65.02±12.13 ***,sensitivity,specificity and accuracy were superior for FNB vs FNA(84.70%vs 74.53%;99.29%vs 96.62%;and 87.62%vs 81.55%,respectively;Psubgroup analyses,sensitivity,specificity,and accuracy of FNB alone were similar to FNA+ROsE[(81.66%vs 86.45%;P=0.142),(100%vs 100%;P=1.00)and(88.40%vs 85.43%;P=0.320].There were no difference in diagnostic yield of FNB alone vs FNB+ROsE(P>0.05).Multivariate analysis showed no significant predictor for better *** subgroup analyses,FNB was superior to FNA for non-pancreatic lesions;however,there was no difference between the techniques among pancreatic *** adverse event was reported in each *** FNB is superior to FNA with equivalent diagnostic test characteristics compared to FNA+ROsE in the diagnosis of non-pancreatic solid *** results suggest that EUs-FNB may eliminate the need of ROsE and should be employed as a first-line method in the diagnosis of solid lesions.

关键词： Endoscopic ultrasound-guided tissue acquisition Fine needle aspiration Fine needle biopsy solid lesions Endoscopic ultrasound Cancer

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sedimentary and Geochemical Aspects of a Refinery Impacted Coastal Area: A Case study of the Todos os santos Bay (Bahia, Brazil)

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International Journal of Geosciences 2014年第12期5卷 1451-1467页

作者： Roberto L. Barcellos Elisabete s. braga Valdenir V. Furtado Glaucia B. B. Berbel Department of Oceanography Federal University of Pernambuco Recife Brazil Institute of Oceanography University of Sao Paulo Sao Paulo Brazil

The present study was performed in the northeast portion of the Todosos santos Bay, Bahia state, Brazil, an area under influence of the Landulpho Alves-Mataripe (RLAM) refinery effluents. The aim of this work is to evaluate the modern sedimentary processes based on grain-size analysis, calcium carbonate and sedimentary organic matter concentration and behavior considering the possible effects of the petroleum industry’s refining on these sediments. The concentrations and variations of the three main constituents of organic matter (total organic C, total N and organic P), and the resulting elemental ratios (C/N, C/P and N/P), were studied on a seasonal spatial and temporal scale (winter 2004 and summer 2005), therefore subsidizing the environmental analysis, especially in regards to the benthic ecosystem. Fifty samples from twenty-five sampling stations were collected with a grab sampler. Well sorted sandy sediments are observed in coastal sampling stations and in the Caboto channel. The recent deposition of fine sediments was observed especially in the west and central portions of study area. However, these spots contain the highest percentages of organic material, which do not present significant seasonal and spatial variations, revealed by the values of total organic C which reach values of up to 3.1%, total N (0.01% to 0.15%) and the organic P contents that reach a maximum of 15.9 μmol·g-1. In general, the elemental ratios indicated continental organic matter inputs, probably derived from human activities.

关键词： Coastal Bay sediments sedimentary Organic Matter seasonality Petroleum Refinery Pollution Brazilian Tropical south Atlantic

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Inherited Fanconi syndrome

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World Journal of Pediatrics 2023年第7期19卷 619-634页

作者： Anna Luiza braga Albuquerque Rafael dos santos Borges Ana Flavia Conegundes Erika Emmylaine dos santos Frederico Moreira Man Fu Clara Tavares Araujo Pedro Alves soares Vaz de Castrol Ana Cristina simoes e silva Interdisciplinary Laboratory of Medical Investigation Unit of Pediatric NephrologyFaculty of MedicineFederal University of Minas Gerais(UFMG)Belo HorizonteBrazil Department of Pediatrics Faculty of MedicineUFMGAlfredo Balena Avenue1902Nd FloorRoom#281Belo HorizonteMG 30130-100Brazil

Background Fanconi-Debré-de Toni syndrome(also known as Fanconi renotubular syndrome,or FRsT)profoundly increased the understanding of the functions of the proximal convoluted tubule(PCT)and provided important insights into the pathophysiology of several kidney diseases and drug *** sources We searched Pubmed and scopus databases to find relevant articles about *** review article focuses on the physiology of the PCT,as well as on the physiopathology of FRsT in children,its diagnosis,and *** FRsT encompasses a wide variety of inherited and acquired PCT alterations that lead to impairment of PCT *** children,FRsT often presents as a secondary feature of systemic disorders that impair energy supply,such as Lowe's syndrome,Dent's disease,cystinosis,hereditary fructose intolerance,galactosemia,tyrosinemia,Alport syndrome,and Wilson's *** rare,congenital causes of FRsT greatly impact the morbidity and mortality of patients and impose diagnostic ***,its treatment is diverse and considers the ability of the clinician to identify the correct etiology of the *** The early diagnosis and treatment of pediatric patients with FRsT improve the prognosis and the quality of life.

关键词： Cystinosis Fanconi syndrome Fanconi renotubular syndrome Fanconi-Debre-de Toni syndrome Proximal tubule Renal tubular transport-Rickets

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Al_2O_3负载Cu,Fe或Ni掺杂氧化钼催化乙苯氧化脱氢(英文)

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催化学报 2015年第5期36卷 712-720页

作者： Tiago Pinheiro braga Ant?nio Narcísio Pinheiro Edson R.Leite Regina Cláudia R.dos santos Antoninho Valentini LABPEMOL-Laboratório de Peneiras Moleculares Institute of Chemistry Federal University of Rio Grande do Norte Department of Chemistry Federal University of S?o Carlos Langmuir-Laboratório de Adsor??o e Catálise Department of Analytical Chemistry and Physical Chemistry Federal University of Ceará

Molybdenum-based catalysts supported on Al_2O_3 doped with Ni, Cu, or Fe oxide were synthesized and used in ethylbenzene dehydrogenation to produce styrene. The molybdenum oxide was supported using an unconventional route that combined the polymeric precursor method(Pechini) and wet impregnation on commercial alumina. The samples were characterized by X-ray diffraction(XRD), N_2 adsorption-desorption isotherms, temperature-programmed reduction of H_2(H_2-TPR),and thermogravimetric(TG) analysis. XRD results showed that the added metals were well dispersed on the alumina support. The addition of the metal oxide(Ni, Cu, or Fe) of 2 wt% by wet impregnation did not affect the texture of the support. TPR results indicated a synergistic effect between the dopant and molybdenum oxide. The catalytic tests showed ethylbenzene conversion of 28%–53% and styrene selectivity of 94%–97%, indicating that the addition of the dopant improved the catalytic performance, which was related to the redox mechanism. Molybdenum oxides play a fundamental role in the oxidative dehydrogenation of ethylbenzene to styrene by its redox and acid–base properties. The sample containing Cu showed an atypical result with increasing conversion during the reaction, which was due to metal reduction. The Ni-containing solid exhibited the highest amount of carbon deposited, shown by TG analysis after the catalytic test, which explained its lower catalytic stability and selectivity.

关键词：氧化铝载体乙苯脱氢铁氧化物氧化脱氢钼氧化物镍掺杂氧化还原机理金属氧化物

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Associations of sense of coherence with psychological distress and quality of life in inflammatory bowel disease

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World Journal of Gastroenterology 2015年第21期21卷 6713-6727页

作者： Thiago H Freitas Elias Andreoulakis Gilberto s Alves Hesley LL Miranda Lúcia LBC braga Thomas Hyphantis André F Carvalho Translational Psychiatry Research Group Department of Clinical MedicineFaculty of MedicineFederal University of Ceará 3~(rd) Department of Psychiatry Aristotle University of ThessalonikiUniversity Campus Institute of Biomedicine of Brazilian semiArid(INCT-IBIsAD) Department of Clinical MedicineFaculty of MedicineFederal University of Ceará Department of Psychiatry Faculty of MedicineSchool of Health SciencesUniversity of Ioannina

AIM:To investigate the relationship between sense of coherence,psychological distress and health related quality of life in inflammatory bowel disease(IBD).METHODs:This cross-sectional study enrolled a consecutive sample of 147 IBD(aged 45.1 ± 14.1 years; 57.1% female) patients recruited from a tertiary gastroenterology ***-four participants met diagnostic criteria for Crohn's disease,while eightythree patients had ulcerative ***-demographic data(education,age,race,gender,gross monthly income and marital status),disease-related variables(illness activity,relapse rate in past 2 years,history of surgery and time since diagnosis),sense of coherence(Antonovsky's sOC scale),psychological distress symptoms(Hospital Anxiety and Depression scale) and health-related quality of life(HRQo L; WHOQOLBref) were *** multiple regression analyses were performed to identify factors that are independently associated with psychological distress and HRQo L in patients with IBD and to provide indications for possible moderating or mediating *** addition,formal moderation and mediation analyses(sobel tests) were performed to confirm potential moderators/mediators of the relationship between sOC,psychological distress symptoms and ***:Lower sOC scores(std beta=-0.504; P std beta = 0.176; P = 0.021) and White race(std beta = 0.164; P = 0.033) were independently associated with higher levels of depressive symptoms,while lower levels of sOC(std beta =-0.438; P se rate(std beta = 0.161; P = 0.033) were independently associated with more severe anxiety symptoms.A significant interaction between time since diagnosis and sOC was found with regard to the severity of depressive or anxiety symptoms,as the interaction term(time since diagnosis X sOC) had beta coefficients of-0.191(P = 0.009) and-0.172(P = 0.026),*** levels of anxiety symptoms(std beta =-0.369; P s

关键词： sense of coherence Coping Anxiety Depression Quality of life Crohn's disease Ulcerativecolitis

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