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Fourier and Wavelet Spectral Analysis of EMG Signals in 1-km Cycling Time-Trial

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Applied Mathematics 2014年第13期5卷 1878-1886页

作者： Marcelo Bigliassi paulo Rogério Scalassara Thiago Ferreira dias Kanthack Taufik Abrao Antonio Carlos de Moraes Leandro Ricardo Altimari Group of Study and Research in Neuromuscular System and Exercise CEFE-State University of LondrinaLondrinaBrazil Department of Electrical Engineering Federal Technological University of ParanaCornélio ProcopioBrazil Department of Electrical Engineering CTU-State University of LondrinaLondrinaBrazil Laboratory of Electromyography Studies FEF-State University of CampinasCampinasBrazil

Frequency domain analyses in electromyographic (EMG) signals are frequently applied to assess muscle fatigue and similar variables. Moreover, Fourier-based approaches are typically used for investigating these procedures. Nonetheless, Fourier analysis assumes the signal as stationary which is unlikely during dynamic contractions. As an alternative method, wavelet-based treatments do not assume this pattern and may be considered as more appropriate for joint time-frequency domain analysis. Based on the previous statements, the purpose of the present study was to compare the application of Short-Time Fourier Transform (STFT) and Continuous Wavelet Transform (CWT) to assess muscle fatigue in dynamic exercise of a 1-km of cycling (time-trial condition). The results of this study indicated that CWT and STFT analyses have provided similar fatigue estimates (slope) (p> 0.05). However, CWT application represents lesser dispersion (p 0.05) according to different methods, it is important to note that these responses seem to show greater values for CWT compared to STFT for 2 superficial muscles. Thereby, we are capable of considering CWT as a reliable and useful method to take into consideration when non-stationary or oscillating exercise models are evaluated.

关键词： Exercise Dynamic Exercise Wavelet Analysis Fourier Analysis

巴西戈亚斯州阿拉瓜亚河中亚马孙河巨龟(Podocnemis expansa)的巢穴布局

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AMBIO－人类环境杂志 2005年第3期34卷 208-213页

作者： paulo dias Ferreira Júnior paulo de Tarso Amorim Castro 胥宁 Centro Universitário do Leste de Minas Gerais Ouro Preto联邦大学地质系

在旱季,亚马孙河巨龟(Podocnemis expansa)将巢穴修筑在河槽边缘和内部的广阔沙洲上。这些巢穴在某些沙滩上的某些具体地点的大量聚集表明巢穴位置的选择不是随机的,而是与一些地质状况有关,如沙洲边缘的倾斜度和砂质高台的存在。通向... 详细信息

在旱季,亚马孙河巨龟(Podocnemis expansa)将巢穴修筑在河槽边缘和内部的广阔沙洲上。这些巢穴在某些沙滩上的某些具体地点的大量聚集表明巢穴位置的选择不是随机的,而是与一些地质状况有关,如沙洲边缘的倾斜度和砂质高台的存在。通向高台顶端的通道或斜坡结构的存在是巢穴位置选择的决定性因素。被侵蚀的以及陡峭的沙滩边缘阻碍了亚马孙河龟到达最理想的筑巢位置。随着时间的推移,沙滩形态的变化会改变巢穴的分布。

关键词：亚马孙河巢穴巨龟巴西布局地质状况定性因素位置选择斜坡结构

Mechanisms of neuroplasticity and brain degeneration: strategies for protection during the aging process

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Neural Regeneration Research 2021年第1期16卷 58-67页

作者： Mariana Toricelli Arthur Antonio Ruiz Pereira Guilherme Souza Abrao Helena Nascimento Malerba Julia Maia Hudson Sousa Buck Tania araujo Viel Department of Physiological Sciences Santa Casa de Sao Paulo School of Medical SciencesSao PauloBrazil Laboratory of Neurobiology of Aging School of ArtsSciences and HumanitiesUniversidade de São PauloSao PauloBrazil

Aging is a dynamic and progressive process that begins at conception and continues until *** process leads to a decrease in homeostasis and morphological,biochemical and psychological changes,increasing the individual’s vulnerability to various *** growth in the number of aging populations has increased the prevalence of chronic degenerative diseases,impairment of the central nervous system and dementias,such as Alzheimer’s disease,whose main risk factor is age,leading to an increase of the number of individuals who need daily support for life *** theories about aging suggest it is caused by an increase of cellular senescence and reactive oxygen species,which leads to inflammation,oxidation,cell membrane damage and consequently neuronal ***,mitochondrial mutations,which are generated throughout the aging process,can lead to changes in energy production,deficiencies in electron transport and apoptosis induction that can result in decreased ***,increasing cellular senescence and the release of proinflammatory cytokines can cause irreversible damage to neuronal *** reports point to the importance of changing lifestyle by increasing physical exercise,improving nutrition and environmental enrichment to activate neuroprotective defense ***,this review aims to address the latest information about the different mechanisms related to neuroplasticity and neuronal death and to provide strategies that can improve neuroprotection and decrease the neurodegeneration caused by aging and environmental stressors.

关键词： cell senescence cell signaling cholinergic enriched environment long-term potentiation neurodegeneration neurogenesis neuroinflammatory neuronal death neuroprotection neurotophin

Apolipoprotein E polymorphism influences orthotopic liver transplantation outcomes in patients with hepatitis C virus-induced liver cirrhosis

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World Journal of Gastroenterology 2021年第11期27卷 1064-1075页

作者： José Carlos Rodrigues Nascimento Lianna C Pereira Juliana Magalhães C Rêgo Ronaldo P dias paulo Goberlânio B Silva Silvio Alencar C Sobrinho Gustavo R Coelho Ivelise Regina C Brasil Edmilson F Oliveira-Filho James S Owen Pierluigi Toniutto Reinaldo B Oriá Department of Anesthesia and Surgery Liver Transplantation Fortaleza General HospitalFortaleza 60150-160CEBrazil Laboratory of the Biology of Tissue Healing Ontogeny and NutritionDepartment of Morphology and Institute of BiomedicineSchool of MedicineFederal University of CearáFortaleza 60430-270CEBrazil Department of Dental Clinic Federal University of CearáFortaleza 60430-270CEBrazil Department of Surgery Liver Transplant Unit of Federal University of CearáFortaleza 60430-270CEBrazil Transplantation Division Hospital Geral de FortalezaFortaleza 60175-742CEBrazil Institute of Virology CharitéUniversitätsmedizin BerlinBerlin 10117Germany UCL Medical School Royal Free CampusLondon NW32PFUnited Kingdom Department of Specialized Medicine Hepatology Liver Transplantation UnitAzienda Sanitaria Universitaria Integrata of UdineUdine I-33100Italy

BACKGROUND Hepatitis C virus(HCV)infection is responsible for a chronic liver inflammation,which may cause end-stage liver disease and hepatocellular *** E(protein:ApoE,gene:APOE),a key player in cholesterol metabolism,is mainly synthesized in the liver and APOE polymorphisms may influence HCV-induced liver *** To determine whether APOE alleles affect outcomes in HCV-infected patients with liver cirrhosis following orthotopic liver transplantation(OLT).METHODS This was a cohort study in which 179 patients,both genders and aged 34-70 years,were included before or after(up to 10 years follow-up)*** injury severity was assessed using different criteria,including METAVIR and models for endstage liver *** polymorphisms were analyzed by quantitative real-time polymerase chain *** The APOE3 allele was the most common(67.3%).In inflammation severity of biopsies from 89 OLT explants and 2 patients in pre-transplant,the degree of severe inflammation(A3F4,0.0%)was significantly less frequent than in patients with minimal and moderate degree of inflammation(≤A2F4,16.2%)P=0.048,in patients carrying the APOE4 allele when compared to *** addition,a significant difference was also found(≤A2F4,64.4%vs A3F4,0.0%;P=0.043)and(A1F4,57.4%vs A3F4,0.0%;P=0.024)in APOE4 patients when compared to APOE3 *** fibrosis degree of the liver graft in 8 of 91 patients and the lack of the E4 allele was associated with more moderate fibrosis(F2)(P=0.006).CONCLUSION Our results suggest that the E4 allele protects against progression of liver fibrosis and degree of inflammation in HCV-infected patients.

关键词： Apolipoprotein E Polymorphism Liver cirrhosis Hepatitis C virus Hepatocellular carcinoma Liver transplantation

Ξbb and Ωbbb molecular states

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Chinese Physics C 2020年第6期44卷 87-94页

作者： J.M.dias Qi-Xin Yu Wei-Hong Liang Zhi-Feng Sun Ju-Jun Xie E.Oset m.dias1 2qi-xin yu13wei-hong liang14zhi-feng sun5ju-jun xie6785.oset191.department of physicsguangxi normal universityguilin 541004china instituto de física universidade de são paulorua do matão 1371.butantãcep 05508-090são paulosão paulobrazil institute for experimental physics department of physicsuniversity of hamburgluruper chaussee 149d-22761 hamburggermany guangxi key laboratory of nuclear physics and technology guangxi normal universityguilin 541004china school of physical science and technology lanzhou universitylanzhou 730000china institute of modern physics chinese academy of scienceslanzhou 730000china school of physics and microelectronics zhengzhou universityzhengzhou 450001china school of nuclear science and technology university of chinese academy of sciencesbeijing 100049china departamento de física teórica and ific centro mixto universidad de valencia-csic institutos de investigación de paternaaptdo.2208546071 valenciaspain

Using the vector exchange interaction in the local hidden gauge approach,which in the light quark sector generates the chiral Lagrangians and has produced realistic results for Ωc,Ξc,Ξb and the hidden charm pentaquark states,we study the meson-baryon interactions in the coupled channels that lead to the Ξbb and Ωbbb excited states of the molecular *** obtain seven states of the Ξbb type with energies between 10408 and 10869 MeV,and one Ωbbb state at 15212 MeV.

关键词： doubly-heavy baryons strong interaction molecular state

Cultivation of “Roxo de Valinhos” Fig Tree in Different Plant Densities for Production of Green Figs for Industry in the Region of Campo Das Vertentes-MG

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Agricultural Sciences 2018年第9期9卷 1097-1106页

作者： paulo Márcio Norberto Angelo Albérico Alvarenga JoséClelio de Andrade Filipe Almendagna Rodrigues Lair Victor Pereira Emerson dias Goncalves Company of Farming Research of Minas Gerais—EPAMIG LavrasBrazil Federal University of Lavras—UFLA LavrasBrazil

The objective of this work was to study the effect of different planting densities on the development and production of “Roxo de Valinhos” green figs for industry, in the Campo das Vertentes-MG region. The experiment was installed at the Risoleta Neves Experimental Field—CERN/EPAMIG. The plants used were three years old and were arranged in three randomized blocks, subject to three different planting densities, with spacings ranging from 1 m (4000 plants·ha-1), 1.5 m (2666 plants·ha-1), and 2 m (2000 plants·ha-1) between plants in the planting line and 2.5 m between row for all planting densities. The average length of the branches (m), average number of fruits per branch, average number of fruits per plant, average weight of fruits, average yield per plant and the average yield per hectare (kg) were evaluated. It was verified that, there were no significant differences in the length of branch and in the average weight of fruit, in the three densities of fig tree planting. (4000 plants·ha-1), the average number of fruits per branch (7.5), per plant (55.87) and yield per plant (878.93 kg) were lower, however. The average yield per hectare (3515.73 kg) was higher than in other growing densities. It is concluded that, the higher density of plants (4000 plants·ha-1), provides the highest productivity per area, without damages to the quality of the fruits.

关键词： Planting Densities Agroindustry Ficus carica L.

Purification,characterization and antiproliferative activity of L-asparaginase from Aspergillus oryzae CCT 3940 with no glutaminase activity

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Asian Pacific Journal of Tropical Biomedicine 2016年第9期6卷 785-794页

作者： Fernanda Furlan Goncalves dias Ana Lucia Tasca Gois Ruiz Adriana Della Torre Helia Harumi Sato Department of Food Science School of Food EngineeringUniversity of Campinas Division of Pharmacology and Toxicology Multidisciplinary Center for ChemicalBiological and Agricultural ResearchUniversity of Campinas

Objective:To explore the anti-proliferative activity of purified L-asparaginase from Aspergillus oryzae CCT 3940(***).Methods:L-asparaginase was produced by submerged fermentation and purified to electrophoresis homogeneity by ionic exchanged chromatography in a fast protein liquid chromatographic *** purified enzyme was characterized and used for the antiproliferative assay against nine tumor cell lines and one non-tumor cell ***:The free glutaminase L-asparaginase was purified 28.6 fold.L-asparaginase showed high stability under physiological condition,remaining stable in the p H range7.0–8.0 after 1 h incubation at temperature range 30–45℃.The Km and Vmax values of purified L-asparaginase were estimated as 0.66 mmol/L and 313 IU/mL,*** purified enzyme could inhibit the growth of a broad range of human tumor cell lines at the concentrations ***,the enzyme from *** CCT 3940 could inhibit tumor growth of leukemia cell line(K562) with a total growth inhibition value of(3.2 ± 2.5) IU/mL and did not inhibit the non-carcinogenic human cell line growth at the concentrations ***:The sensitivity of the cells lines to purified L-asparaginase from *** CCT 3940 appeared to be concentration dependent affording a more significant decrease in cell growth than that observed for the commercial L-asparaginase from Escherichia *** L-asparaginase from *** CCT 3940 has a high potential for pharmaceutical exploitation in the treatment of leukemia.

关键词： L-asparaginase Aspergillus oryzae Purification Anti-tumoral activity

Impact of sports participation on cardiovascular health markers of children and adolescents: Systematic review and meta-analysis

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World Journal of Clinical Pediatrics 2022年第4期11卷 375-384页

作者： Wesley Torres Santiago Maillane-Vanegas Jacqueline Bexiga Urban Romulo araujo Fernandes Department of Physical Education Sao Paulo State University-UNESPPresidente Prudente 19060900Sao PauloBrazil

BACKGROUND Cardiovascular diseases have a high prevalence in adults and their development begins in the first decades of *** the other hand,sports participation in childhood and adolescence provides benefits which can delay the onset of these *** To synthesize the available literature on the impact of sports participation on cardiovascular outcomes in children and *** This systematic review was conducted on studies of children and adolescents(aged 8-18 years)who regularly practiced a sport and had reported cardiovascular outcomes(blood pressure and intima-media thickness)*** Medline/PubMed,SciELO,Reference Citation Analysis(https://*** ***/)and Bireme databases were *** In total,3314 publications for blood pressure and 122 publications for intimamedia thickness were identified in the *** exclusions(e.g.,duplicate articles,animal studies and those that did not meet the inclusion criteria),four publications for blood pressure(449 adolescents)and two publications for intimamedia thickness were included(402 adolescents).For blood pressure,all publications were longitudinal in design(follow-up ranging from 12 wk to 12 mo)and involved adolescents aged from 8 years to 18 years of *** intima-media thickness,both publications were longitudinal in design and involved adolescents aged from 11 years to 18 years of *** Sports participation seems to promote benefits to cardiovascular structure and function in ***,studies with adolescents are scarce and further research is needed to understand this phenomenon.

关键词： Pediatrics Adolescents Sports Blood pressure Intima-media thickness

Termite Resistance of Heat-Treated Eucalyptus OSB Bonded with Eco-Friendly Castor Oil Adhesive

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Journal of Renewable Materials 2024年第11期12卷 1911-1925页

作者： Estefani S.Sugahara Andre M.A.dias Fernanda D.Maffioletti Juarez B.Paes Andre L.Christoforo Edson C.Botelho Alfredo M.P.G.dias Cristiane I.Campos SerQ Innovation and Competence Forest CenterSertã6100-711Portugal Materials and Technology Department Faculty of Engineering and Sciences of GuaratinguetáSão Paulo State University(UNESP)Guaratinguetá12516-410Brazil Department of Civil Engineering University of CoimbraCoimbra3030-790Portugal Exact Sciences and Technology Center Federal University of São CarlosSão Carlos13565-905Brazil Department of Forest and Wood Science Federal University of Espírito SantoJeronimo Monteiro29550-000Brazil

Over the last decade,the oriented strand board(OSB)market presented meaningful ***,as a woodbased product,because of its anatomical structure and chemical composition,OSB can be damaged by biodeterioration *** that,the biodeterioration of OSB panels must be investigated to improve its *** this way,this work analyses the biological resistance against termites(Cryptotermes brevis and Nasutitermes corniger)of heat-treated OSB panels made with Eucalyptus wood glued with vegetable-based polyurethane-an ecofriendly and sustainable adhesive derived from castor *** panels were produced with different layers compositions(face:core:face of 25:50:25 and 30:40:30)in wood mass proportion and were submitted to postproduction heat treatment(at 175℃ and 200℃)replacing the use of chemical *** influence of the layers variation and heat treatment temperature were evaluated,and these results were compared with commercial panels(made from pinus wood with insecticide).The results showed that the heat treatment did not improve the resistance against termite ***,all the experimental panels presented a satisfactory performance that was compatible with the commercial panels produced with insecticide available in the Brazilian *** combination of Eucalyptus wood and castor oil adhesive to produce OSB,in any variation of layer composition,demonstrated natural resistance against termite attack compatible with the commercial panels,even without using chemical additives to increase durability.

关键词： Alternative raw materials biodeterioration OSB panel castor oil adhesive wood products