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材料科学与工程（中英文A版） 2011年第5X期1卷 671-677页

作者： pedro paulo merat Maria Ines Bruno Tavares Emerson Oliveira da Silva Instituto de Macromoleculas Professora Eloisa Mano Universidade Federal do Rio de Janeiro Centro de Tecnologia Bloco J Rio de Janeiro RJ CEP 21945-970 Brazil Instituto Federal de Educacao Ciencia e Tecnologia Rio de Janeiro Avenida Republica do ParaguaL 120 Sarapui Duque de Caxias Rio de Janeiro RJ CEP 25050-100 Brazil

The nanocomposites based on polycarbonate and organophilic montmorillonite were prepared by solvent cast method, using different ratios of organophilic montmorillonite. The intermolecular interactions and molecular dynamics of the nanocomposites obtained have been evaluated by spin-lattice relaxation time determined by nuclear magnetic resonance. They have also been characterized by X-ray diffraction to confirm the changes in the organoclay structure after being incorporated in the polymeric matrix. The thermal stability of both polymer and nanocomposites were also studied by thermogravimetric analysis. The glass transition temperature was determined by differential scanning calorimetry. The sum of all results indicates that nanocomposites obtained presented a predominant intercalated morphology.

关键词：纳米复合材料 X射线衍射分析低场核磁共振聚碳酸酯热分析制备差示扫描量热法玻璃化转变温度

Evaluation of Cinnamon by Solid-State NMR Employing Relaxometry

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Materials Sciences and Applications 2023年第3期14卷 142-147页

作者： pedro paulo merat Roberto Cucinelli Neto Vitor Santos Ramos Maria Inês Bruno Tavares Instituto de Macromoléculas Professora Eloisa Mano (IMA) da Universidade Federal do Rio de Janeiro UFRJ Centro de Tecnologia Ilha do Fund&atildeo Rio de Janeiro Brasil IFRJ Avenida República do Paraguai Duque de Caxias Brasil

To evaluate the molecular dynamics and the molecular regions presented in the cinnamon types it was chosen to evaluate them without any treatment, and for that it was used low-field nuclear magnetic resonance (NMR) through the pulse sequence such as MSE-FID, an NMR sequence in the time domain, and from the longitudinal relaxation time (with a time constant T1), employing the inversion-recovery pulse sequence. The low-field NMR results indicate that the techniques chosen were a very good alternative to evaluate these types of samples food and their structural organization according to their constituents. The molecular mobility is different.

关键词： Cinnamon Low-Field NMR NMR Relaxation Functional Food

Applying a Context-based Method to Build a Knowledge Graph for the Blue Amazon

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Data Intelligence 2024年第1期6卷 64-103页

作者： pedro de Moraes Ligabue Anarosa Alves Franco Brandão Sarajane Marques Peres Fabio Gagliardi Cozman paulo Pirozelli Escola Politécnica Universidade de São PauloRua Visconde da Luz60São PauloSão Paulo 05508-010Brazi Escola Politécnica Universidade de São PauloAv.Prof.Luciano Gualbertotv 3158São Paulo 05508-010Brazil Escola de Artes Ciências e Humanidades Universidade de São PauloRua Arlindo Béttio1000São Paulo 03828-000Brazil Instituto de Estudos Avançados Universidade de São PauloRua da Praça do Relógio109São Paulo 05508-050Brazil

Knowledge graphs are employed in several tasks,such as question answering and recommendation systems,due to their ability to represent relationships between *** constructing such a graphs,however,remains an unresolved challenge within knowledge *** tackle this challenge,we propose CtxKG,a method specifically aimed at extracting knowledge graphs in a context of limited resources in which the only input is a set of unstructured text *** is based on OpenIE(a relationship triple extraction method)and BERT(a language model)and contains four stages:the extraction of relationship triples directly from text;the identification of synonyms across triples;the merging of similar entities;and the building of bridges between knowledge graphs of different *** method distinguishes itself from those in the current literature(i)through its use of the parse tree to avoid the overlapping entities produced by base implementations of OpenIE;and(ii)through its bridges,which create a connected network of graphs,overcoming a limitation similar methods have of one isolated graph per *** compare our method to two others by generating graphs for movie articles from Wikipedia and contrasting them with benchmark graphs built from the OMDb movie *** results suggest that our method is able to improve multiple aspects of knowledge graph *** also highlight the critical role that triple identification and named-entity recognition have in improving the quality of automatically generated graphs,suggesting future paths for ***,we apply CtxKG to build BlabKG,a knowledge graph for the Blue Amazon,and discuss possible improvements.

关键词： knowledge graph word embeddings relationship triple extraction Blue Amazon Atlantic Ocean Brazilian coast

Determination of critical state line(CSL)for silty-sandy iron ore tailings subjected to low-high confining pressures

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第5期16卷 1684-1695页

作者： Nilo Cesar Consoli João Vítor de Azambuja Carvalho Alexia Cindy Wagner Hugo Carlos Scheuermann Filho Inácio Carvalho pedro Pazzoto Cacciari João paulo de Sousa Silva Civil Engineering Universidade Federal do Rio Grande do SulPorto AlegreRS90035-190Brazil Exploration and Mineral Projects-Mineral Development Centre VALE S.A.Santa LuziaMG33040-900Brazil Department of Civil Geological and Mining EngineeringPolytechnique MontrealQuebecH3C 3A7Canada

The disposal of filtered tailings in high dry stacks can induce particle breakage,changing the material's behaviour during the structure's *** grading changes influence material properties at the critical state,and this is not mature for intermediate artificial soils(tailings)in a broad range of confining *** this paper,it aims to describe the behaviour of iron ore tailings in a spectrum of confining pressures broader than the reported in previous studies.A series of consolidated drained(CD)triaxial tests was carried out with confining pressures ranging from 0.075 MPa to 120 *** results show that the amount of breakage plays an essential role in the response of iron ore *** existence of curved critical state line(CSL)in both specific volume(ν)-logarithm of mean effective stress(p′)and deviatoric stress(q)-mean effective stress(p′)planes,and different responses in the deviatoric stress-axial strain-volumetric strain curves were *** inverse S-shaped equation was proposed to represent the silty-sandy tailings'behaviour up to high pressures onν-lnp′*** proposed equation provides a basis for enhancing constitutive models and considers the evolution of the grading up to severe loading *** adjustment considered three regions with different responses associated with particle breakage at different pressure levels.

关键词： Tailings Iron ore tailings dry stacking Silty-sandy material Critical state soil mechanics High confining pressures Particle breakage

Comparison of Surgical Techniques Used in Treating Acromioclavicular Dislocation in Patients Participating in Sports: A Systematic Review

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Open Journal of Orthopedics 2024年第1期14卷 41-52页

作者： Walter Hugo Brandão Nascimento paulo Renan Matos Sucupira Cunha João pedro Pimentel Abreu Lethycia Pereira Rosa Kamilly Iêda Silva Veigas Rodrigo Martins Silva Caetano Orthopedic and Trauma Surgeon Brazilian Army Rio de Janeiro Brazil Orthopedic and Trauma Surgeon S&atildeo Luís Brazil Scholarship Holder National Council for Scientific and Technological Development (CNPq) S&atildeo Luís Brazil School of Medicine Federal University of Maranh&atildeo (UFMA) S&atildeo Luís Brazil Orthopedic and Trauma Surgeon Shoulder and Elbow Surgery Specialist University Hospital of the Federal University of Maranh&atildeo (HUUFMA/EBSERH) S&atildeo Luís Brazil

Introduction: The acromioclavicular joint is a superficial diarthrodial joint that surrounds the medial articular facet of the acromion and the distal portion of the clavicle. Due to its anatomy and biomechanics, it is highly susceptible to trauma and in young men who play contact sports, acromioclavicular dislocation is common. This article aimed to systematically review the literature and compare the surgical techniques used in the treatment of acromioclavicular dislocation in patients who practice sports. Methods: This systematic review was conducted according to the International Preferred Reporting Items for Systematic Review and Meta-Analyses guidelines. Eligible studies for this systematic review included articles in English or Spanish published between 2013 and 2023, which mention the occurrence of acromioclavicular dislocation during sports practices. Additionally, only studies that addressed the surgical treatment of acromion-clavicular dislocation and contained original data on the topic were included. Results: We found 144 eligible studies after searching the LILACS and PubMed databases. Based on the inclusion and exclusion criteria and the reviewers’ consensus, we selected four studies for the systematic review. 133 patients with AC joint displacement were evaluated. Mean Age: approximately 31.90 years. 81.92 of these injuries occurred during sports practice. Surgical Procedures Used: titanium plates fixation (49 patients), arthroscopy (24), single tunnel technique (30) and coracoid sling technique (30). The results of the visual analog scale and Constant-Murley scores varied between the techniques used. Twenty-two complications after surgical treatment were identified. Conclusion: A significant variability of operative techniques can be used in the surgical approach of acromioclavicular dislocation, such as arthroscopy, single tunnel, coracoid sling and titanium plates. Although it presented excellent functional results compared to the other three tech

关键词： Acromioclavicular Joint Shoulder Dislocation Surgical Procedure Postoperative Complications Postoperative Care

Gram-negative bacterial diversity and evidence of international clones of multidrug-resistant strains in zoo animals

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Integrative Zoology 2024年第3期19卷 417-423页

作者： João pedro Rueda FURLAN Micaela Santana RAMOS Fábio Parra SELLERA Irys Hany Lima GONZALEZ Patrícia Locosque RAMOS Eliana Guedes STEHLING Department of Clinical Analyses Toxicology and Food ScienceSchool of Pharmaceutical Sciences of Ribeirão PretoUniversity of São PauloRibeirão PretoBrazil Department of Internal Medicine School of Veterinary Medicine and Animal ScienceUniversity of São PauloSão PauloBrazil School of Veterinary Medicine Metropolitan University of SantosSantosBrazil Coordination of Wild Fauna Secretary of EnvironmentInfrastructure and LogisticsSão PauloBrazil

Antimicrobial resistance(AMR)is a growing phenomenon that poses a major public health challenge worldwide(Dhingra et al.2020;Antimicrobial Resistance Collaborators 2022).The selective pressure exerted in clinical settings has contributed to the longlasting successful dissemination of multidrug-resistant(MDR)Gram-negative bacteria in these environments(Chia et al.2020).

关键词： multidrug clinical

Clear cell sarcoma of the pancreas,an unusual cancer with unusual metastatic site or unusual primary site?

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World Journal of Clinical Cases 2024年第25期12卷 5653-5656页

作者： Jhenyffer Carvalho Moreno pedro Luiz Serrano Uson Junior Universidade 9 de Julho Sao Paulo 01509120Brazil Center for Personalized Medicine Hospital Israelita Albert EinsteinSão Paulo 05652900Brazil Department of Oncology Hospital do CoraçãoSao Paulo 04004030Brazil

Clear cell sarcoma(CCS)is a type of malignant tumor that can arise from tendons and *** malignant proliferation of cells with melanocytic lineage normally occurs in young patients,and it is normally identified in ***,different sites including gastrointestinal organs are also *** difficulties in the molecular and histopathology evaluation,the diagnosis is often confused with malignant *** cases are treated with surgical resection,but overall,the prognosis is *** this editorial,we will discuss a very interesting case of CCS identified in the *** will discuss the literature and controversies in the management of this type of ***,we will address molecular strategies to be incorporated in those cases to better understand the primary location of the ***,future perspectives of the field and new strategies of treatment will be described.

关键词： Clear cell sarcoma Soft tissue sarcoma Metastatic cancer Pancreatic cancer Pancreatectomy

Physico-chemical characterization of acid base disorders in patients with COVID-19:A cohort study

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World Journal of Nephrology 2024年第2期13卷 16-23页

作者： Sergio Pinto de Souza Juliana R Caldas Marcelo Barreto Lopes Marcelo Augusto Duarte Silveira Fernanda Oliveira Coelho Igor Oliveira Queiroz pedro Domingues Cury Rogério da Hora Passos Department of Nephrology Hospital São RafaelSalvadorBA 41253190Brazil Department of Nephrology D’Or Institute for Research and Education(IDOR)SalvadorBA 41253190Brazil Faculty of Medicine Escola Bahiana de Medicina e Saúde Pública-EBMSPSalvadorBA 40290000Brazil Department of Intensive Care D’Or Institute for Research and Education(IDOR)SalvadorBA 41253190Brazil Hospital São Rafael D’Or Institute for Research and Education(IDOR)SalvadorBA 41253190Brazil Department of Intensive Care Unit Hospital Israelita Albert EinsteinSao PauloSP 05652900Brazil

BACKGROUND Acid-base imbalance has been poorly described in patients with coronavirus disease 2019(COVID-19).Study by the quantitative acid-base approach may be able to account for minor changes in ion distribution that may have been over-looked using traditional acid-base analysis *** a cohort of critically ill COVID-19 patients,we looked for an association between metabolic acidosis surrogates and worse clinical outcomes,such as mortality,renal dialysis,and length of hospital *** To describe the acid-base disorders of critically ill COVID-19 patients using Stewart’s approach,associating its variables with poor *** This study pertained to a retrospective cohort comprised of adult patients who experienced an intensive care unit stay exceeding 4 days and who were diagnosed with severe acute respiratory syndrome coronavirus 2 infection through a positive polymerase chain reaction analysis of a nasal swab and typical pulmonary involvement observed in chest computed tomography *** and clinical data were obtained from electronic *** variables were compared using Fisher’s exact *** data were presented as median and interquartile *** Mann-Whitney U test was used for *** In total,211 patients were *** mortality rate was 13.7%.Overall,149 patients(70.6%)presented with alkalosis,28 patients(13.3%)had acidosis,and the remaining 34 patients(16.2%)had a normal arterial pondus *** those presenting with acidosis,most had a low apparent strong ion difference(SID)(20 patients,9.5%).Within the group with alkalosis,128 patients(61.0%)had respiratory *** non-survivors were older,had more comorbidities,and had higher Charlson’s and simplified acute physiology score *** did not find severe acid-base imbalance in this *** analyzed Stewart’s variables(effective SID,apparent SID,and strong ion gap and the effect of albumin,lactate,phosphorus,and chloride)were not d

关键词： COVID-19 Physicochemical approach Acid-base status Critically ill patients Acute respiratory syndrome

Successful eradication of the European rabbit(Oryctolagus cuniculus)and house mouse(Mus musculus)from the island of Selvagem Grande(Macaronesian archipelago),in the Eastern Atlantic

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Integrative Zoology 2010年第1期5卷 70-83页

作者： paulo OLIVERA Dilia MENEZES Roger TROUT Alan BUCKLE pedro GERALDES JoséJESUS Parque Natural da Madeira Quinta do Bom SucessoCaminho do MeioMadeira Forest Research Alice Holt LodgeFarnhamSurrey School of Biological Sciences The University of ReadingReadingUK University of Madeira Department of BiologyCampus of PenteadaPortugal

The Portuguese island of Selvagem Grande(Great Salvage)in Macaronesia is an important seabird breeding station in the eastern *** populations of Cory’s shearwater Calonectris diomedea(Scopoli,1769),Bulwer’s petrel Bulweria bulweria(Jardine&Selby,1828)and little shearwater Puffinus assimilis baroli(Bonaparte,1857)are present,and white-faced storm-petrel Pelagodroma marina(Latham,1790)and Madeiran storm-petrel Oceanodroma castro(Harcourt,1851)populations are of global *** Grande also provides diverse habitats for an extensive flora,including 11 endemic *** 270-ha island was also inhabited by two alien invasive mammals:the European rabbit Oryctolagus cuniculus(Linnaeus,1758)and the house mouse Mus musculus(Linnaeus,1758).Both are known to have had adverse impacts on breeding seabirds and island *** 2002,the Natural Park of Madeira conducted a program using brodifacoum bait formulations aimed at rabbit and mouse *** 17000 individual baiting points were established on a 12.5×12.5 m *** were also applied by hand“seeding”on steep slopes and cliffs where bait stations could not be *** were removed after a ***,mice persisted for considerably longer and strategic bait applications against them continued for a further six *** assessments by trapping,bait takes and systematic observa-tion of signs over three years,has confirmed the removal of both alien invasive *** paper presents information on these operations,on measures adopted to mitigate adverse impacts of the eradication program on important vertebrate non-target species,including Berthelot’s pipit Anthus berthelotii Bolle,1862 and a species of gecko Tarentola bischoffi Joger,1984 and on the initial response of the island’s ecosystem to the eradication of rabbits and mice.

关键词： alien invasive island restoration Mus musculus non-target mitigation Oryctolagus cuniculus

Static-based early-damage detection using symbolic data analysis and unsupervised learning methods

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Frontiers of Structural and Civil Engineering 2015年第1期9卷 1-16页

作者： Joao pedro SANTOS Christian CREMONA Andre D. ORCESI paulo SILVEIRA Luis CALADO Department of Structures Av. Brasil 101 Lisbon 1700-066 Portugal Technical Center for Bridge Engineering CEREMA B.P. 214 Provins Cedex 77487 France Materials and Structures Department IFSTTAR University Paris-Est 14-20 Boulevard Newton Champs sur Marne Marne la Vallee Cedex2 F-77447 France Department of Civil Engineering Technical University Lisbon Avenida Rovisco Pais Lisbon 1096 Portugal

A large amount of researches and studies have been recently performed by applying statistical and machine learning techniques for vibration-based damage detection. However, the global character inherent to the limited number of modal properties issued from operational modal analysis may be not appropriate for early-damage, which has generally a local character. The present paper aims at detecting this type of damage by using static SHM data and by assuming that early-damage produces dead load redistribution. To achieve this objective a data driven strategy is proposed, consisting of the combination of advanced statistical and machine learning methods such as principal component analysis, symbolic data analysis and cluster analysis. From this analysis it was observed that, under the noise levels measured on site, the proposed strategy is able to automatically detect stiffness reduction in stay cables reaching at least 1%.

关键词： structural health monitoring early-damage detection principal component analysis symbolic data symbolic dissimilarity measures cluster analysis numerical model damage simulations