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Spectroscopic Multicomponent Analysis Using Multi-objective Optimization for Variable Selection

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Computer Technology and Application 2013年第9期4卷 466-475页

作者： Anderson da Silva Soares Telma Woerle de Lima Daniel vitor de LuPcena Rogerio Lopes Salvini GustavoTeodoro Laureano Clarimar Jose Coelho Institute of lnformatics Federal University of Goifs Goidnia 74001970 Brazil Computer Science Department Pontifical University Catholic of Goicas Goiania 74605-010 Brazil

The multiple determination tasks of chemical properties are a classical problem in analytical chemistry. The major problem is concerned in to find the best subset of variables that better represents the compounds. These variables are obtained by a spectrophotometer device. This device measures hundreds of correlated variables related with physicochemical properties and that can be used to estimate the component of interest. The problem is the selection of a subset of informative and uncorrelated variables that help the minimization of prediction error. Classical algorithms select a subset of variables for each compound considered. In this work we propose the use of the SPEA-II (strength Pareto evolutionary algorithm II). We would like to show that the variable selection algorithm can selected just one subset used for multiple determinations using multiple linear regressions. For the case study is used wheat data obtained by NIR (near-infrared spectroscopy) spectrometry where the objective is the determination of a variable subgroup with information about E protein content (%), test weight (Kg/Hl), WKT (wheat kernel texture) (%) and farinograph water absorption (%). The results of traditional techniques of multivariate calibration as the SPA (successive projections algorithm), PLS (partial least square) and mono-objective genetic algorithm are presents for comparisons. For NIR spectral analysis of protein concentration on wheat, the number of variables selected from 775 spectral variables was reduced for just 10 in the SPEA-II algorithm. The prediction error decreased from 0.2 in the classical methods to 0.09 in proposed approach, a reduction of 37%. The model using variables selected by SPEA-II had better prediction performance than classical algorithms and full-spectrum partial least-squares.

关键词：近红外光谱变量选择多组分分析多目标优化偏最小二乘法预测误差算法选择 Pareto

Cystic Degeneration of Peripheral Intrahepatic Cholangiocarcinoma: An Atypical Presentation

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Case Reports in Clinical Medicine 2019年第3期8卷 43-48页

作者： Leandro Trstã o Abi-Ramia de Moraes José vitor Rassi Garcia Anderson da costa Lino Costa Marcos Duarte Guimarã es Department of Radiology at Hospital Heliópolis Sao Paulo Brazil

Cholangiocarcinomas are primary malignant tumors of the liver that arises from the epithelium lining the small intra and extrahepatic bile ducts, and has numerous histologic types and growth patterns. At computed tomography (CT) and magnetic ressonance (MR), it has various appearences which motivated the present study;we present a case within an atypical presentation. The objective is to show the variety of differential diagnoses before an atypical aspect and the importance of the imaging methods for the diagnosis. Cholangiocarcinoma is still an uncommon neoplasm, and CT and MR are crucial for accurate diagnosis and for differentiation from other hepatic tumorous and nontumorous lesions.

关键词： Cholangiocarcinoma Peripheral Cholangiocarcinoma Intrahepatic Cholangiocarinoma Liver Neoplasms Bile Ducts Neoplasms Cystic Lesion

Dietary supplementation with curcumin-loaded nanocapsules in lambs:Nanotechnology as a new tool for nutrition

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Animal Nutrition 2021年第2期7卷 521-529页

作者： Hiam Marcon Luiz G.Griss vitor L.Molosse Bruno G.O.Cecere Davi F.Alba Karoline W.Leal Gabriela M.Galli Carine F.Souza Matheus D.Baldissera Samanta Gundel Vitória de A.Bassotto Aline F.Ourique Marcelo Vedovatto Aleksandro S.Da Silva Department of Animal Science Universidade Do Estado de Santa Catarina(UDESC)ChapecóSCBrazil Graduate Program in Animal Science UDESCChapecóSCBrazil Department of Physiology and Pharmacology Universidade Federal de Santa Maria(UFSM)RSBrazil Universidade Franscicana Santa MariaRSBrazil Graduate Program in Animal Science Universidade Estadual de Mato Grosso Do SulAquidauanaMSBrazil

Curcumin-containing nanocapsule powder formulations have not been used in ruminant feed to date,despite the fact that curcumin is known to be a functional food *** objective of this study was to determine whether ethyl polymethacrylate(Eudragit L-100)nanocapsules loaded with curcumin(N-CU)would improve health and growth of ***-two male Lacaune lambs(body weight[BW]=16±0.99 kg;45 d of age)were randomly assigned to 1 of 4 treatments:T0,T1,T2 and T4,representing supplementation of curcumin at 0,1,2,and 4 mg/kg concentrate,*** animals in each treatment were allocated in 4 pens of 2 lambs each(8 lambs per treatment).The experiment lasted 17 d,with samples and measurements collected on d 0,7,12,and *** T2 lambs had greater average daily gain than T0 *** analysis showed that the ideal dose of N-CU to enhance weight gain was 1.89 mg/kg *** were significant interactions(P<0.05)between treatments×time for hematological variables,particularly for increases in erythrocytes(T2)and re-ductions in counts of leukocytes,neutrophils,and lymphocytes in T1 and *** were significant interactions between treatment×time for total protein,globulin,urea,and triglyceride ***-lation of the antioxidant system was also *** were increased levels of non-protein thiols(NPSH),as well as increased activities of superoxide dismutase(SOD)and glutathione S-transferase(GST)in the supplemented *** of reactive oxygen species(ROS)were lower in the serum of sup-plemented *** general,the 4 mg/kg dose had no positive effects on growth or *** was an unexpected result,given the known properties of *** together,these findings suggest that addition of low concentrations of nanoencapsulated curcumin(T1 and T2)in lamb feed improves health,minimizing oxidative stress and generates anti-inflammatory effects that may have contributed indi-rectly to greater weight *** potentiate the effe

关键词： Antioxidant Anti-inflammatory Curcuma longa Performance Sheep

Is Pulmonary Auscultation Alone Sufficient for Clinical Practice?

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Open Journal of Respiratory Diseases 2020年第3期10卷 49-58页

作者： Waldo Luis Leite Dias de Mattos João vitor Pinotti Dallasen Ana Gabriela Goularte Juchem Douglas da Silva Pinos3, Fabiana Jaeger Federal University of Health Sciences of Porto Alegre (UFCSPA) Porto Alegre Brazil Santa Casa de Misericórdia Hospital Porto Alegre Brazil Nossa Senhora da Conceiç ã o Hospital Porto Alegre Brazil

Objective: The clinical examination is the basis for the diagnosis and rational choice of complementary tests. The aim of the study was to evaluate the performance of auscultation of the chest for screening of disease and for predicting the presence of abnormalities in the other domains of the chest examination. Methods: Patients with COPD, atelectasis, pleural effusion, pneumonia and controls were evaluated by two examiners in the absence of any clinical information, initially only with pulmonary auscultation, and then in the other domains of chest examination. Results: 192 physical examinations were performed in 104 patients. An abnormal pulmonary auscultation had a sensitivity of 85.2%, positive predictive value (PPV) of 84.1%, positive likelihood reason (LR) of 1.53 (95% CI;1.16 to 2.01) and negative LR of 0.33 (95% CI;0.2 to 0.56) to identify the presence of any disease, and also a positive LR of 2.23 (95% CI;1.02 to 4.9) and a negative LR of 0.3 (95% CI;0.17 to 0.51) to predict additional abnormalities. A normal auscultation showed low accuracy to identify healthy individuals, with sensitivity, specificity, NPV and PPV, respectively, of 44%, 43%, 41% and 46%. The agreement between the examiners considering normal versus abnormal findings showed kappa = 0.76 for any changes in the physical examination present (p Conclusions: Auscultation of the chest alone, may not be a sufficient strategy to track diseases or establish whether continuity of the examination is necessary or not.

关键词： Physical Examination Pulmonary Auscultation Clinical Diagnosis

Characterization and Evaluation of Bond Strength of Dental Polymer Systems Modified with Hydroxyapatite Nanoparticles

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Journal of Materials Science and Chemical Engineering 2013年第7期1卷 13-23页

作者： vitor César Dumont Rafael Menezes Silva Luiz Edmundo Almeida-Júnior Juan Pedro Bretas Roa Adriana Maria Botelho Maria Helena Santos Department of Dentistry Federal University of Vales do Jequitinhonha and Mucuri Diamantina Brazil Department of Dentistry Federal University of Vales do Jequitinhonha and Mucuri Diamantina Brazil Advanced Biomaterial Center-BioMat UFVJM Diamantina Brazil Department of Dentistry Federal University of Vales do Jequitinhonha and Mucuri Diamantina Brazil Advanced Biomaterial Center-BioMat UFVJM Diamantina Brazil Institute of Science and Technology UFVJM Diamantina Brazil

The study modifies an adhesive system with hydroxyapatite nanoparticles as load, characterizing it and evaluate the effectiveness of its bond to dental structure. The middle thirds of healthy premolar tooth crowns were obtained, and each crown was sectioned vertically, resulting in two sections. The sections were divided into ten groups (n = 15), in which resin composite restorations were simulated: (G1E and G1D) conventional adhesive system (SAC);(G2E and G2D) SAC modified with HAP;(G3E and G3D) Primer modified with HAP;(G4E and G4D) monocomponent adhesive system;(G5E and G5D) self-etching adhesive system. The specimens were submitted to the microshear test and characterization technique. There was statistically significant difference (Kruskal-Wallis) between the groups (p 0.01). G3 presented the highest bond strength to enamel (64.40 MPa, ±7.36) and dentin (39.59 MPa, ±21.46). The majority of specimens were found adhesive fractures. Bond strength to enamel and dentin of the primer modified with HAP of SAC showed higher values.

关键词： Nanostructures Composites Mechanical Properties Fracture

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崇尚自然的巴西圆竹结构建筑

生态文明世界 2019年第B9期 206-213页

作者：维托·马卡(vitor Marcal) 李智勇不详

维托·马卡(vitor Marcal),巴西青年竹建筑师,浑身散发着拉丁文化气息。再次见到他是在2018年6月的世界竹藤大会上。初次到北京的维托,大大的眼睛中满是兴奋。他说,特别荣幸能得到国际竹藤组织的邀请,来到北京参加首届世界竹藤大会,北... 详细信息

维托·马卡(vitor Marcal),巴西青年竹建筑师,浑身散发着拉丁文化气息。再次见到他是在2018年6月的世界竹藤大会上。初次到北京的维托,大大的眼睛中满是兴奋。他说,特别荣幸能得到国际竹藤组织的邀请,来到北京参加首届世界竹藤大会,北京比他想象的还要漂亮和现代。

关键词：建筑师崇尚自然巴西竹结构国际竹藤组织文化气息北京世界

Turmeric and Vitamin E on the Performance and Quality of Eggs from White Layers

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Agricultural Sciences 2019年第6期10卷 720-726页

作者： Christine Laganá Erika S. P. Braga Saldanha José Roberto Sartori Elisabeth Gonzales Renato Luis Luciano Greice Zanatta vitor Barbosa Fascina Agência Paulista de Tecnologia dos Agronegócios Polo Regional do Leste Paulista and UPD Brotas Secretariat of Agriculture and Supply to the State of S&#227 o Paulo (SAA) Monte Alegre do Sul Brazil Faculty of Veterinary Medicine and Zootechnics State University of S&#227 o Paulo Botucatu Campus Botucatu Brazil Advanced Center for Poultry Agribusiness Technological Research of the Biological Institute (SAA) Descalvado Brazil

A 112-day experiment was conducted to evaluate turmeric and vitamin E levels on the productive performance and quality of hen eggs. A total of 432 20-week-old white layers were used, distributed in an entirely randomized design, in a 4 × 3 factor scheme (turmeric extract levels and vitamin E levels), with 6 repetitions of 6 birds per cage. The treatments consisted of four levels of turmeric extract inclusion (0;0.1;0.2 and 0.3) and three levels of vitamin E inclusion (0;50 and 100 IU/kg). Egg quality was evaluated at each 28-day cycle through the variables specific gravity, yolk percentage, albumen percentage, shell percentage and thickness, Haugh unit, yolk index and staining, and production performance: weight, egg production and mass, feed intake, feed conversion (kg/kg;kg/dz), and mortality. The addition of vitamin E alone worsened feed intake, egg weight and feed conversion of layers. Turmeric added to 100 IU of Vit E improved egg mass indices, Haugh Unit and yolk index and intensified yolk staining. The amount of turmeric used in this experiment was not sufficient to improve the performance or egg quality of the birds.

关键词： Plant Extracts Productive Performance Phytogenic Additives

Biomechanical Analysis of Implant Assisted-Overdentures with Variations in the Attachments Systems

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Materials Sciences and Applications 2015年第8期6卷 734-742页

作者： Eduardo Vedovatto Jose vitor Quinelli Mazaro Humberto Gennari Filho Paulo Sérgio Perri de Carvalho Caroline Cantieri de Mello Cleidiel Aparecido Araujo Lemos Sã o Leopoldo MandicInstituteandResearch Center Campinas Brazil Department of Prosthodontic and Dental Materials Ara&ccedil atuba School of Dentistry S&atilde o Paulo State University (UNESP) Ara&ccedil atuba Brazil Department of Surgery an Integrated Clinic Ara&ccedil atuba School of Dentistry S&atilde o Paulo State University (UNESP) Ara&ccedil atuba Brazil Departmentof Dental Materials and Prosthodontics Ara&ccedil atuba SchoolofDentistry S&atilde o Paulo StateUniversity (UNESP) Ara&ccedil atuba Brazil.

The aim of this study was to assess the stress patterns on the peri-implant zone and residual alveolar ridge in different overdenture attachment system designs by the photoelasticity method. Four attachments systems were tested: O-ring, ERA, Bar-clip, and Bar-clip/O-ring association. The prostheses were loaded with 100 N in five pre-determined points and the photoelastic model was evaluated by a circular polariscope. The anterior load, O-ring, and ERA showed better stress distribution in relation to the bars systems, which presented stress levels surrounding implants. The molar load, Bar-clip/O-ring association, presented the biggest stress concentration on the peri-implant region in relation to the others. When the second molar was loaded, there was a concentration of stress in the alveolar ridge in all situations analyzed. Within the limitation of this “in vitro” study, it could be concluded that there were biomechanical differences among the attachments systems analyzed, principally between isolated and the bars systems. The O-ring showed better stress distribution and the Bar-clip/O-ring showed higher stress concentration.

关键词： Dental Implants Complete Denture Overdentures

Biliary drainage in inoperable malignant biliary distal obstruction: A systematic review and meta-analysis

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World Journal of Gastrointestinal Surgery 2021年第5期13卷 493-506页

作者： Maria Vitória Cury Vieira Scatimburgo Igor Braga Ribeiro Diogo Turiani Hourneaux de Moura vitor Massaro Takamatsu Sagae Bruno Salomão Hirsch Mateus Bond Boghossian Thomas R McCarty Marcos EduardoLera dos Santos Tomazo Antonio Prince Franzini Wanderley Marques Bernardo Eduardo GuimarãesHourneaux de Moura Gastrointestinal Endoscopy Unit Hospital das Clínicas da Faculdade de Medicina da Universidade de São PauloSão Paulo 05403-010Brazil Division of Gasteoenterology Hepatology and EndoscopyBrigham and Women's HospitalBostonMA 02115United States

BACKGROUND Endoscopic drainage remains the treatment of choice for unresectable or inoperable malignant distal biliary obstruction(MDBO).AIM To compare the safety and efficacy of plastic stent(PS)vs self-expanding metal stent(SEMS)placement for treatment of *** This meta-analysis was developed according to Preferred Reporting Items for Systematic Reviews and Meta-Analysis guidelines.A comprehensive search was performed in MEDLINE,Cochrane,Embase,Latin American and Caribbean Health Sciences Literature,and grey literature to identify randomized clinical trials(RCTs)comparing clinical success,adverse events,stent dysfunction rate,reintervention rate,duration of stent patency,and mean *** difference(RD)and mean difference(MD)were calculated and heterogeneity was assessed with I2 *** analyses were performed by SEMS *** Twelve RCTs were included in this study,totaling 1005 *** was no difference in clinical success(RD=-0.03,95%confidence interval[CI]:-0.01,0.07;I 2=0%),rate of adverse events(RD=-0.03,95%CI:-0.10,0.03;I2=57%),and mean patient survival(MD=-0.63,95%CI:-18.07,19.33;I2=54%)between SEMS vs PS ***,SEMS placement was associated with a lower rate of reintervention(RD=-0.34,95%CI:-0.46,-0.22;I2=57%)and longer duration of stent patency(MD=125.77 d,95%CI:77.5,174.01).Subgroup analyses revealed both covered and uncovered SEMS improved stent patency compared to PS(RD=152.25,95%CI:37.42,267.07;I2=98%and RD=101.5,95%CI:38.91,164.09;I2=98%;respectively).Stent dysfunction was higher in the covered SEMS group(RD=-0.21,95%CI:-0.32,-0.1;I²=205%),with no difference in the uncovered SEMS group(RD=-0.08,95%CI:-0.56,0.39;I²=87%).CONCLUSION While both stent types possessed a similar clinical success rate,complication rate,and patient-associated mean survival for treatment of MDBO,SEMS were associated with a longer duration of stent patency compared to PS.

关键词： Biliary tract neoplasms Stents Protheses Malignancy Biliary system Cancer