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Muscle strength and its association with cardiometabolic variables in adolescents:does the expression of muscle strength values matter?

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World Journal of Pediatrics 2021年第6期17卷 597-608页

作者： tiago rodrigues de lima Xuemei Sui Luiz Rodrigo Augustemak de lima Diego Augusto Santos Silva Research Center in Kinanthropometry and Human Performance Federal University of Santa CatarinaTrinity University CampusFlorianopolisSC CEP 88010-970Brazil department of Exercise Science Arnold School of Public HealthUniversity of South CarolinaColumbiaSCUSA Research Group On Biodynamics of Human Performance and Health Institute of Physical Education and SportFederal University of AlagoasMaceioBrazil

Background We investigate the association between different muscle strength(MS)indices with cardiometabolic variables in *** Cross-sectional study comprising 351 adolescents(male 44.4%,age 16.6±1.0 years)from *** was assessed by handgrip strength and analyzed in live difrerent ways:absolute MS and MS normalized for body weight,body mass index(BMI),height,and fat mass,*** variables investigated as outcomes were systolic and diastolic blood pressure(DBP),waist circumference(WC),high-sensitive C-reactive protein(hs-CRP),lipid and glucose metabolism *** linear regression models adjusted for confounding factors were *** Absolute MS and/or MS normalized for height was directly associated with WC[up to 32.8 *** error(SE)=4.7]and DBP(up to 8.8 mmHg,SE=0.8),and inversely associated with high-density lipoprotein cholesterol(up to-8.0 mg/***=14.1).MS normalized for body *** or fat inass was inversely associated with WC(up to-17.5 cm,SE=2.2).According tesex,MS normalized for fat mass was inversely associated with triglycerides(male:0.02 times lower,SE=0.01;female:0.05 times lower,SE=0.01)and homeostatic model assessment for insulin resistance(male:0.02 times lower,SE=0.01;female:0.06 times ***=0.01).and inversely associated with hs-CRP only among male(0.03 times lower,SE=0.01).Conclusion When normalized for body weight,BMI or fat mass,MS was superior to absolute MS or MS normalized for height in representing adequately cardiometabolic variables among adolescents.

关键词： Abdominal C-reactive protein Hand strength Insulin resistance Obesity Triglycerides

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Association of sleep quality with sociodemographic factors and lifestyle in adolescents from southern Brazil

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World Journal of Pediatrics 2018年第4期14卷 383-391页

作者： tiago rodrigues de lima Diego Augusto Santos Silva Physical Education department Federal University of Santa CatarinaProfessor Clementino de Britto Street362 ap 334 CapoeirasFlorianópolisSanta CatarinaBrazil

Background Good sleep quality is an essential component for growth, development, and physical and mental health of the individual, in addition to being a positive indicator of health and well-being. The objective of this study was to estimate the prevalence of poor sleep quality and to identify the association of poor sleep quality with sociodemographic factors, lifestyle, weight status, and associated aerobic fitness in adolescents. Methods This study included 1110 students aged 14–19 years from city of S?o José/SC, Brazil. Sleep quality of the subjects was assessed using a questionnaire and classified as adequate and low. Independent variables were gender, age, monthly household income, maternal education, school shift, global physical activity, proper diet, screen time, sleeping hours of full week, sleeping hours of weekdays, sleeping hours of weekends, weight status, and aerobic fitness. Binary logistic regression was used to estimate odds ratios and confidence intervals of 95%. Results Prevalence of poor sleep quality was 60.4%. More likely to have poor sleep quality were identified in female students (OR 1.68, 95% CI 1.11–2.55), whose mothers had higher levels of education (OR 1.44, 95% CI 1.20–1.73) and low aerobic fitness (OR 1.80, 95% CI 1.02–3.19). Conclusion Adolescents who were most likely to report poor sleep quality were female, those whose mothers had a higher educational level and had low aerobic fitness. Students with sedentary risk behavior were less likely of reporting poor sleep quality.

关键词： Adolescents Brazil Cross-sectional studies demographic indicators Sleep hygiene

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Dual-delay-Path Ring Oscillator with Self-Biased delay Cells for Clock Generation

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Circuits and Systems 2023年第6期14卷 19-28页

作者： Agord de Matos Pinto Jr Raphael Ronald Noal Souza Mateus Biancarde Castro Eduardo rodrigues de lima Leandro tiago Manêra School of Electrical and Computer Engineering (FEEC) University of Campinas Campinas Brazil Eldorado Research Institute Campinas Brazil

This work summarizes the structure and operating features of a high-performance 3-stage dual-delay-path (DDP) voltage-controlled ring oscillator (VCRO) with self-biased delay cells for Phase-Locked Loop (PLL) structurebased clock generation and digital system driving. For a voltage supply VDD = 1.8 V, the resulting set of performance parameters include power consumption PDC = 4.68 mW and phase noise PN@1MHz = -107.8 dBc/Hz. From the trade-off involving PDC and PN, a system level high performance is obtained considering a reference figure-of-merit ( FoM = -224 dBc/Hz ). Implemented at schematic level by applying CMOS-based technology (UMC L180), the proposed VCRO was designed at Cadence environment and optimized at MunEDA WiCkeD tool.

关键词： Phase Locked Loop (PLL) Voltage-Controlled Ring Oscillators (VCRO) Dual-delay-Path DDP delay Cells

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Aerodynamic Effects Compensation on Multi-Rotor UAVs Based on a Neural Network Control Allocation Approach

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IEEE/CAA Journal of Automatica Sinica 2022年第2期9卷 295-312页

作者： Sarah P.Madruga Augusto H.B.M.Tavares Saulo O.D.Luiz tiago P.do Nascimento Antonio Marcus N.lima Graduate Program of Electrical Engineering Universidade Federal de Campina GrandeCampina Grande-PBBrazil department of Electrical Engineering Universidade Federal de Campina GrandeCampina Grande-PBBrazil IEEE department of Computer Systems Universidade Federal da ParaibaJoao Pessoa-PBBrazil

This paper shows that the aerodynamic effects can be compensated in a quadrotor system by means of a control allocation approach using neural ***,the system performance can be improved by replacing the classic allocation matrix,without using the aerodynamic inflow equations *** network training is performed offline,which requires low computational *** target system is a Parrot MAMBO drone whose flight control is composed of PD-PID controllers followed by the proposed neural network control allocation *** a quadrotor is particularly susceptible to the aerodynamics effects of interest to this work,because of its small *** compared the mechanical torques commanded by the flight controller,i.e.,the control input,to those actually generated by the actuators and established at the *** was observed that the proposed neural network was able to closely match them,while the classic allocation matrix could not achieve *** allocation error was also determined in both ***,the closed-loop performance also improved with the use of the proposed neural network control allocation,as well as the quality of the thrust and torque signals,in which we perceived a much less noisy behavior.

关键词： Aerodynamics effects control allocation minidrone multi-rotor UAV neural networks

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19-year remotely sensed data in the forecast of spectral models of the environment

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International Journal of Digital Earth 2021年第8期14卷 1040-1066页

作者： Fernando Saragosa Rossi Carlos Antonio da Silva Junior JoséFrancisco de Oliveira-Júnior Paulo Eduardo Teodoro Luciano Shozo Shiratsuchi Mendelson lima Larissa Pereira Ribeiro Teodoro Auana Vicente tiago Guilherme Fernando Capristo-Silva State University of Mato Grosso(UNEMAT) Alta FlorestaMato GrossoBrazil department of Geography State University of Mato Grosso(UNEMAT)SinopMato GrossoBrazil cFederal University of Alagoas(UFAL) MaceióAlagoasBrazil dFederal University of Mato Grosso do Sul(UFMS) Chapadão do SulMato Grosso do SulBrazil eAgCenter School of PlantEnvironmentaland Soil SciencesLouisiana State University(LSU)Baton RougeLouisianaUSA fPostgraduate Program in Agronomy Federal University of Mato Grosso(UFMT)SinopMato GrossoBrazil

The aims of this study were:i)to compare no-till areas in two municipalities located in different regions of Brazil,along with the influence on CO_(2)Flux and GPP,and ii)to verify the difference between environmental factors followed by the trends of these variables regarding future scenarios(ARIMA time-series model number).The study was carried out in two areas with different latitudes in the municipalities of Sinop-MT and Passo Fundo-RS,both in Brazil.A time series of 19 years was performed with data acquired by remote sensing from the following satellites:i)Landsat-8(OLI and TIRS),and ii)TERRA/AQUA(MODIS).The results propound that the spectro-temporal variables are directly influenced by soil management and agricultural practices over the observation time,with a satisfactory correlation in future predictions of the variables for the next ten years,in which presented that the variation of GPP and albedo values for the two study sites would gradually increase until 2028 and the temperature remained constant between the range of its seasonality,and CO_(2)Flux tends to decrease in its seasonality,indicating a higher CO_(2) absorption.

关键词： ARIMA numerical modeling remote sensing orbital products tillage

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A new heparin fragment decreases liver ischemia-reperfusion injury

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Hepatobiliary & Pancreatic Diseases International 2022年第2期21卷 190-192页

作者： Enio R Vasques Estela RR Figueira Joel A Rocha-Filho Cinthia Lanchotte Jorge LS Ximenes Helena B Nader Ivarne LS Tersariol Marcelo A lima tiago rodrigues JoséEM Cunha Eleazar Chaib Luiz AC D’Albuquerque Flávio HF Galvão Laboratorio de Investigaçao Medica 37 Departamento de GastroenterologiaHospital das Clinicas HCFMUSPFaculdade de MedicinaUniversidade de São PauloSão Paulo 01246-903Brazil departamento de Gastroenterologia Hospital das Clinicas HCFMUSPFaculdade de MedicinaUniversidade de São PauloSão PauloBrazil Disciplina de Anestesiologia Hospital das Clinicas HCFMUSPFaculdade de MedicinaUniversidade de São PauloSão PauloBrazil departamento de Bioquimica Universidade Federal de São PauloSão PauloBrazil Universidade Federal do ABC Santo AndreSão PauloBrazil Serviço de Transplante de Figado e Orgaos do Aparelho Digestivo Departamento de GastroenterologiaHospital das Clinicas HCFMUSPFaculdade de MedicinaUniversidade de São PauloSão PauloBrazil

To the Editor:Ischemia-reperfusion injury following surgery and transplantation can lead to irreversible multiorgan *** calcium overload is associated to cellular death during ischemiareperfusion.A recently discovered heparin fragment (HF),trisulfated disaccharide (TD),that acts on sodium-calcium exchanger(NCX) decreasing intracellular Ca^(2+),showed effectiveness on protecting hepatocytes from ischemia-reperfusion injury [1].

关键词： irreversible heparin injury

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N-Acetyltransferase 2 genetic polymorphisms and risk of colorectal cancer

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World Journal of Gastroenterology 2011年第6期17卷 760-765页

作者： tiago Donizetti da Silva Aledson Vitor Felipe Jacqueline Miranda de lima Celina Tizuko Fujiyama Oshima Nora Manoukian Forones Oncology Group Gastroenterology Division Universidade Federal de So Paulo Pathology department Universidade Federal de So Paulo

AIM:To investigate the possible association between meat intake,cigarette smoking and N-acetyltransferase 2 (NAT2) genetic polymorphisms on colorectal cancer (CRC) ***:Patients with CRC were matched for gender and age to healthy *** intake and cigarette smoking were assessed using a specific frequency *** was extracted from peripheral blood and the genotypes of the polymorphism were assessed by polymerase chain reaction-restriction fragment length *** NAT2 alleles were studied (WT,M1,M2,M3 and M4) using specific digestion ***:A total of 147 patients with colorectal cancer (76 women and 90 men with colon cancer) and 212 controls were *** mean age of the two groups was 62 *** than half the subjects (59.8% in the case group and 51.9% in the control group) were NAT2 slow *** odds ratio for colorectal cancer was 1.38 (95% CI:0.90-2.12) in slow *** the number of women was small (n=76 in the case group),the cancer risk was found to be lower in intermediate (W/Mx) acetylators [odds ratio (OR):0.55,95% confidence interval (95% CI):0.29-1.02].This difference was not observed in men (OR:0.56,95% CI:0.16-2.00).Among NAT2 fast acetylators (W/W or W/Mx),meat consumption more than 3 times a week increased the risk of colorectal cancer (OR:2.05,95% CI:1.01-4.16).In contrast,cigarette smoking increased the risk of CRC among slow acetylators (OR:1.97,95% CI:1.02-3.79).CONCLUSION:The risk of CRC was higher among fast acetylators who reported a higher meat *** NAT2 acetylation was associated with an increased risk of CRC.

关键词： N-acetyltransferase 2 Polymorphism Colorectal cancer

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Fast Fading Channel Neural Equalization Using Levenberg-Marquardt Training Algorithm and Pulse Shaping Filters

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International Journal of Communications, Network and System Sciences 2014年第2期7卷 71-74页

作者： tiago Mota Jorgean Leal Antonio lima departament of Mechatronics Federal University of BahiaBahiaBrazil National Telecommunications Agency of Brazil BahiaBrazil departament of Electrical Engineering Federal University of BahiaBahiaBrazil

Artificial Neural Network (ANN) equalizers have been successfully applied to mitigate Inter symbolic Interference (ISI) due to distortions introduced by linear or nonlinear communication channels. The ANN architecture is chosen according to the type of ISI produced by fixed, fast or slow fading channels. In this work, we propose a combination of two techniques in order to minimize ISI yield by fast fading channels, i.e., pulse shape filtering and ANN equalizer. Levenberg-Marquardt algorithm is used to update the synaptic weights of an ANN comprise only by two recurrent perceptrons. The proposed system outperformed more complex structures such as those based on Kalman filtering approach.

关键词： decision Feedback Equalizers Levenberg-Marquardt Algorithm Pulse Shaping Recurrent Neural Networks

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Data Evaluation and Visibility in Single Beam Scanner of Gamma Ray Tomography

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World Journal of Nuclear Science and Technology 2013年第1期3卷 22-27页

作者： Carlos Costa Dantas Alex Elton Moura tiago Leite Rolim Silvio de Barros Melo Valdemir Alexandre dos Santos Emerson Alexandre de Oliveira lima department of Chemistry Catholic University of Pernambuco Recife Brazil department of Mathematics University of Pernambuco Recife Brazil department of Mechanical Engineering Federal University of Pernambuco Recife Brazil department of Nuclear Energy Federal University of Pernambuco Recife Brazil Informatics Center Federal University of Pernambuco Recife Brazil

In this paper, data analysis and modeling of gamma ray tomography taken into account spatial resolution and source of errors and the attenuation coefficient measurement in row data from tomography process are presented. The results showed that this method is simple, effective and should be prior to any data treatment for opaque vessel reactor and by reconstruction algorithm in process imaging.

关键词： Attenuation Coefficient Data Modeling Row Data Transmission Tomography

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Analytical Solutions of the Equations One Mechanical Thermal Model of a Helical Spring NiTi for Use in Heat Engine

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Journal of Mechanics Engineering and Automation 2014年第8期4卷 648-656页

作者： Luciana lima Monteiro Jose Roberto da Costa Campos tiago Leite Rolim Ricardo Artur SanguinettiFerreira Academic department of Control of lndustrial Process Instituto Federal de Educacao Ciencia e Tecnologia de PernambucoRecife 50740-540 Brazil department of Mechanical Engineering Polytechnic School of Pernambuco/UPE (University of Pernambuco) Recife 50100-010Brazil department of Mechanical Engineering Federal University of Pernambuco Recife 50670-90 Brazil

Shape memory effect is capability of certain materials to recover its original shape after an apparently permanent deformation. The NiTi alloy of the composition is approximately equiatomic and it is the materials that exhibit the best characteristics for application of these properties, especially in the biomedical area, because of their excellent biocompatibility as： in the manufacture of medical and dental instruments, orthodontic wires, orthopedic materials, guide wires, stents, filters and components to realize the less invasive surgeries. In other areas, they are used for confections of electronic keys, spectacle frames, application in controllers, junction of pipes and electronic connectors among others. New research topics involving the application of these alloys super-elasticity are also known as pseudo elasticity. This event has an isothermal nature and involves the storage of potential energy in the shape memory effect and super-elasticity. In this context, this work falls within the scope of use of the technologies being an example of the work undertaken, in the course Graduate of Federal University of Pernambuco in skills in these technologies. It will present the results of a heat engine which engine element is a helical spring made of a NiTi alloy equiatomic with memory effect reversibly. The spring is triggered by a hot source （- 373.15 K） and a cold source （273.15 K）. The machine is capable of producing a reciprocating oscillating between the two sources. Heat equations and the equations that describe the dynamic behavior of the spring were developed. Through the development of dynamic equations, it can determine the minimum mass for the motion of the machine, as well as the instantaneous and average power and overall efficiency. You can check the functionality of the machine by way of the inclination angle of the propeller and the coefficient of static friction. Among the main results, it was observed that the overall performance of the machine co

关键词： Experimental mechanics heat engine NiTi.

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