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Painful Symptomatology Reported by Dentistry Students at a Brazilian University

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Health 2015年第8期7卷 976-985页

作者： Cristiane Assuncao da costa Cunha Iris do Ceu Clara costa Angelo Giuseppe Roncalli Dyego Leandro bezerra de Souza Fábia Barbosa de Andrade Antonio Medeiros Júnior Department of Dentistry Federal University of Rio Grande do Norte(UFRN)NatalBrazil Department of Collective Health Federal University of Rio Grande do Norte(UFRN)NatalBrazil Department of Nursing Faculty of Health Sciences of Trairi(FACISA)Federal University of Rio Grande do Norte(UFRN)Santa CruzBrazil

Objectives: Identification of the level of knowledge on ergonomics principles, and application of these by dentistry students to investigate whether painful symptomatology was experienced. An-other objective is the expansion of discussions on occupational health in academic settings. Study Design and Settings: Dentistry students of the Federal University of Rio Grande do Norte, Brazil (n = 148) were surveyed using the Nordic Musculoskeletal Questionnaire to determine the severity of musculoskeletal symptoms experienced. Data were analyzed through EpiInfo 7.0 to measure central trends and variability 5for quantitative variables, absolute and relative frequencies for categorical variables, and significance between groups (confidence intervals and chisquare). Association analysis (Pearson) was also carried out. Results: Ergonomic measures were not reported by students. Within the musculoskeletal symptoms described, females were the most affected, independent of academic level. Conclusions: Positive correlations were verified between all categories and all anatomic regions (e.g., neck, lower back, wrists, hands, and shoulders). Data suggest progressive worsening of symptoms, which will eventually result in leaves of absence.

关键词： Musculoskeletal Disorders Ergonomics Health Promotion Occupational Health Health Education

Differential diagnosis between functional and organic intestinal disorders:Is there a role for non-invasive tests?

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World Journal of Gastroenterology 2007年第2期13卷 219-223页

作者： Francesco costa Maria Gloria Mumolo Santino Marchi Massimo Bellini Section of Gastroenterology Department of Internal MedicineUniversity of Pisa Pisa Italy

Abdominal pain and bowel habits alterations are common symptoms in the general population. The investigation to differentiate organic from functional bowel disorders represents a considerable burden both for patients and public health service. The selection of patients who should undergo endoscopic and/or radiological procedures is one of the key points of the diagnostic process, which should avoid the abuse of invasive and expensive tests as well as the underestimation of potentially harmful diseases. Over the cominci years,dinidans and researchers will be challenged to develop strategies to increase the patient＇s compliance and to reduce the economic and social costs of the intestinal diseases.

关键词： Intestinal diseases Intestinal inflammation Functional bowel disorders Faecal markers

Temperature-dependent thermal conductivity and fuel performance of UN-UO_(2) and UN-X-UO_(2)(X=Mo,W)composite nuclear fuels by finite element modeling

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Journal of Materiomics 2024年第4期10卷 937-946页

作者： Faris Sweidan Diogo Ribeiro costa Huan Liu Pär Olsson KTH Royal Institute of Technology Nuclear EngineeringStockholm10691Sweden Westinghouse Electric Sweden AB Västerås72163Sweden

The temperature-dependent effective thermal conductivity of UN-X-UO_(2)(X=Mo,W)nuclear fuel composite was *** the experimental design,the thermal conductivity was calculated using Finite Element Modeling(FEM),and compared with analytical models for 10%,30%,50%,and 70%(in mass)uncoated/coated UN microspheres in a UO_(2) *** FEM results show an increase in the fuel thermal conductivity as the mass fraction of the UN microspheres increases from 1.2 to 4.6 times the UO_(2) reference at 2,000 *** results from analytical models agree with the thermal conductivity estimated by *** results also show that Mo and W coatings have similar thermal behaviors,and the coating thickness influences the thermal conductivity of the *** higher weight fractions,the thermal conductivity of the fuel composite at room temperature is substantially influenced by the high thermal conductivity coatings approaching that of ***,the thermal conductivity from FEM was used in the fuel thermal performance evaluation during LWR normal operation to calculate the maximum centerline *** results show a significant decrease in the fuel maximum centerline temperature ranging from−94 K for 10% UN to−414 K for 70%(in mass)UN compared to UO_(2) under the same operating conditions.

关键词： Accident tolerant fuel UN-X-UO_(2) Composite nuclear fuel Thermal conductivity Finite element modeling Thermal performance

3D City Models as a Visual Support Tool for the Analysis of Buildings Seismic Vulnerability: The Case of Lisbon

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International Journal of Disaster Risk Science 2017年第3期8卷 308-325页

作者： Paula Redweik Paula Teves-costa Inês Vilas-Boas Teresa Santos Instituto Dom Luiz Faculdade de CiênciasUniversidade de Lisboa ESRI Portugal CICS.NOVA–Centro Interdisciplinar de Ciências Sociais Faculdade de Ciências Sociais e HumanasUniversidade Nova de Lisboa

3D city models associate a database of a city to a rigorous geospatial representation that is close to the visible reality by combining appearance, geometry, and semantics. As such, these models may include tools that convey attribute analysis, not only at the statistical level but also in terms of visual appearance of the objects, thus allowing the generation of new knowledge about a phenomenon or its effects. Lisbon is a city with a moderate level of seismic risk, and has been hit in the past by strong earthquakes. Several seismic vulnerability studies of buildings have been carried out in Lisbon. These studies generate different scenarios that consider the magnitude and source location of potential earthquakes. The results of these studies were presented as maps obtained from crossing information contained in 2D layers and presented in a GIS environment. In the present study a seismic vulnerability assessment of Lisbon's buildings held in 2D is extended to the third dimension, which refines the resolution and the set of parameters and explores the gains of spatial analysis in 3D representations. The numerous parameters that contribute to assess seismic vulnerability of buildings may be analyzed individually or simultaneously as well as in multiple seismic scenarios. Although covering all residential buildings in Lisbon, the application of the 3Dcity model is demonstrated with more detail in three pilot areas.

关键词： 3D-GIS 3D models Building vulnerability Lisbon Seismic scenarios

An illustrated checklist of macrofaunal molluscs from soft-sediments of the Abrolhos Parcel(northeastern,Brazil)with 15 new records

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Journal of Oceanology and Limnology 2021年第2期39卷 671-682页

作者： Flávia Maria Pereira da costa Ana Maria Setubal PIRES-VANIN Departamento de Oceanografi a Biológica Instituto Oceanográfi coUniversidade de São PauloSão Paulo 05508-120Brazil

Comprehensive understanding of marine biodiversity is essential for conservation,especially for vulnerable *** this paper,we implemented and illustrated a checklist of molluscs from the Abrolhos Parcel,Brazil,the most important coralline area in South Atlantic *** list features 100 species belonging to 4 classes and 85 genera,of which 15 are new records for Bahia State,northeast *** results highlight the potential for new records in the *** species came from 54 unconsolidated sediment samples collected from the bottom of the reef with a 0.042-m^(2) van Veen *** the listed species,Curveulima sp.,Notarchus *** Guyanella clenchi are new records for the South Atlantic,while Caecum metamorphosicum,Eratoidea janeiroensis,Volvarina serrei,Solemya notialis,Solariorbis shimeri,and Amphithalamus glabrus are endemic to Brazilian waters.A comparison of our results with those obtained in other reef environments indicates that the Abrolhos Parcel has a rich malacofauna and suggests that many more species can still be found with more samplings.

关键词： Bivalvia Gastropoda micromolluscs Scaphopoda Solenogastres southwest Atlantic

Recovery of rare-earth metals from aqueous solutions by bio/adsorption using non-conventional materials:a review with recent studies and promising approaches in column applications

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Journal of Rare Earths 2020年第4期38卷 339-355页

作者： Talles Barcelos da costa Meuris Gurgel Carlos da Silva Melissa Gurgel Adeodato Vieira University of Campinas School of Chemical EngineeringAlbert Einstein Avenue50013083e852 CampinasBrazil

The recovery of rare-earth metals(REMs)is of great economic and environmental interest,because of their high market prices and various industrial ***,with the increasing demand for high-purity rare-earth compounds,the separation and purification of these elements have gained considerable *** bio/adsorption process has been considered an alternative to recover these elements,by its simplicity,low cost and efficiency for recovery of REMs at low *** review article presents the recent progress regarding REM bio/adsorption published literature in batch system by different non-conventional bio/adsorbents,as well as a critical analysis of the technological challenges to be faced and future *** this purpose,the best application model(isotherm,kinetics),thermodynamic quantities and selection of eluents for desorption studies are also ***,in this review,the application of different bio/adsorbent materials were reviewed extensively in terms of the removal and recovery of REMs in continuous fixed-bed adsorption and regeneration ***,future aspects in bio/adsorption research and prospects for commercial applications were discussed.

关键词： Rare-earth metals Bio/adsorbents Adsorption kinetics Isotherm Batch desorption Continuous fixed-bed adsorption

Structural optimization of patient-specific temporomandibular joint replacement implants for additive manufacturing:novel metrics for safety evaluation and biomechanical performance

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Bio-Design and Manufacturing 2022年第2期5卷 333-347页

作者： Manuel Pinheiro Anouar Krairi Robin Willaert Maria C.costa Wim Van Paepegem Mechanics of Materials and Structures(MMS) Ghent UniversityGhentBelgium Materials Innovation Institute(M2i) DelftThe Netherlands Department of Oral and Maxillofacial Surgery University Hospitals Leuven LeuvenBelgium 4 Department of Head and Neck SurgeryGhent University HospitalGhentBelgium

Total temporomandibular joint(TMJ)replacement is recommended only when there is irreversible damage to the joint and no conservative treatment can provide functional *** stock and custom-made TMJ implants have been made available;however,retrospective and comparative studies were unable to find significant differences between the two types of *** introduction of additive manufacturing(AM)techniques in medical practice allows for a greater freedom of design and a higher degree of device *** combination of AM with structural optimisation may streamline development and provide the key for fabricating biomechanic ally enhanced TMJ *** this study,structural optimis ation techniques were applied to develop and numerically validate a patient-specific TMJ *** biomechanical behaviour of each intermediate TMJ design was assessed under four different nominal and maximum biting tasks using finite element *** addition,a new set of metrics were proposed to compare each design regarding biomechanical performance and implant *** results suggest that 55-82%of the natural/intact strain patterns can be recovered with the finally selected TMJ *** represents an increase of 15%in biomechanical performance for incisor biting,15%for right molar biting,17%for left molar biting and a decrease of 2%for left group biting compared with the initial *** results also suggest that load transfer at the proximal ramus reduces the implant’s impact on the mandible’s strain ***,structural optimisation allows for a volume reduction of up to 44%with a minimum loss of implant safety and biomechanical performance.

关键词： Temporomandibular joint Additive manufacturing Implant safety Biomechanical performance Finite element analysis

Post-hepatectomy biliary fistula: from risk factors to the role of drain placement and management—still a lot to be answered

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Hepatobiliary Surgery and Nutrition 2019年第4期8卷 417-418页

作者： Guido costa Matteo Donadon Guido Torzilli Department of Hepatobiliary and General Surgery Humanitas University & Humanitas Clinical and Research Center – IRCCS Rozzano Milan Italy

Hepatic resection represents the gold-standard treatment for different liver diseases. Among postoperative complications, bile leak remains one of the most common sources of morbidity, which can lead to an increase of hospital stay, need of invasive procedure and potentially death (1). The definition and acknowledge of risk factors for the development of biliary fistula as well as its early detection and optimal management is, in this sense, of crucial importance.

关键词： fistula biliary death

Finding chemopreventatives to reduce amyloid beta in yeast

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Neural Regeneration Research 2016年第2期11卷 244-245页

作者： Ian G.Macreadie costa Arvanitis Prashant Bharadwaj School of Science and Health Innovations Research Institute RMIT University Centre of Excellence for Alzheimer’s disease Research and Care School of Medical Sciences Edith Cowan University CHIRI Biosciences Research Precinct School of Biomedical Sciences Curtin University

Alzheimer’s disease（AD）is the most common form of age-related dementia with the latest report（World Alzheimer Report,2015）showing 46.8 million people are currently affected by *** number is expected to double every 20 years unless there is effective therapeutic *** 42 amino acid peptide known as amyloid beta（or Aβ）has been implicated as one of the main causative agents of AD after its discovery in plaques in 1985（Masters et al.,1985）.

关键词： Finding chemopreventatives to reduce amyloid beta in yeast AD