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AB0561 AUTOMATIC QUANTIFICATION OF INTERSTITIAL LUNG DISEASE FROM CHEST COMPUTED TOMOGRAPHY IN SYSTEMIC SCLEROdeRMA

Annals of the Rheumatic Diseases 2020年 79卷 1577-1578页

作者： A. Carvalho A. Guimarães F.R. Sztajnbok R. Rodrigues B. Silva A. Lopes I. Almeida M. França Medical School Hosp. de Santo António (HSA) Centro Hospitalar do Porto (CHP) Instituto de Ciências Biomédicas Abel Salazar (ICBAS) Univ. do Porto Department of Radiology Porto Portugal Laboratory of Pulmonary Engineering Biomedical Engineering Program Alberto Luiz Coimbra Institute of Post-Graduation and Research in Engineering Universidade Federal do Rio de Janeiro Rio de Janeiro Brazil Department of Reumathology State University of Rio de Janeiro Rio de Janeiro Brazil Department of Radiology Universidade Federal do Rio de Janeiro Rio de Janeiro Brazil Postgraduate Program in Medical Sciences School of Medical Sciences State University of Rio de Janeiro Rio de Janeiro Brazil Clinical Immunology Unit Dept. of Medicine Hosp. de Santo António (HSA) Centro Hospitalar do Porto (CHP) Instituto de Ciências Biomédicas Abel Salazar (ICBAS) Univ. do Porto Porto Portugal Radiology Unit Dept. of Radiology Hosp. de Santo António (HSA) Centro Hospitalar do Porto (CHP) Instituto de Ciências Biomédicas Abel Salazar (ICBAS) Univ. do Porto Porto Portugal

Background: Scleroderma-associated interstitial lung disease (SSc-ILD) is often observed in patients with systemic scleroderma (SSc) and its diagnosis contributes to early treatment decisions 1,2 . Objectives: The present study aims to automatically quantify SSc-ILD from high-resolution chest-computed tomography (HRCT) and to evaluate the association between interstitial lung disease (ILD) extension and lung function impairment. Methods: Ninety-four patients with SSc and 27 lung-healthy subjects matched for gender, weight, height, and age underwent HRCT, spirometry and carbon monoxide diffusion capacity (DL CO ). SSc-ILD was determined as the tissue mass present between -500 and +100 Hounsfield Units normalized by the total lung tissue mass (TLM). Cut off was the highest value obtained in the control group (25% of TLM). All data are presented as mean and standard deviations (Table I). An ANOVA test followed by Bonferroni post-hoc correction was used for comparisons among groups. Results: From 94 patients with SSc, 64 were classified as having pulmonary involvement (SSc-ILD) and 30 as not having pulmonary involvement (SSc No-ILD). In SSc-ILD subjects, there was a significant reduction in forced vital capacity (FVC), carbon monoxide diffusion capacity (DL CO ) and carbon monoxide diffusion capacity normalized by alveolar ventilation (DL CO /A) when compared with SSc No-ILD and control group. Conclusion: The proposed method allows the automatic quantification of SSc-ILD from HRCT and ILD extent is associated with pulmonary function impairment. References: [1]doyle TJ, dellaripa PF. Lung Manifestations in the Rheumatic Diseases. CHEST. 2017 dec;152(6):1283–95. [2]Saketkoo LA, Magnus JH, doyle MK. The primary care physician in the early diagnosis of systemic sclerosis: the cornerstone of recognition and hope. The American Journal of the Medical Sciences. 2014 Jan;347(1):54–63. Disclosure of Interests: None declared Table 1 . demographic variables, pulmonary function test

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Novel eco-friendly acid-base indicators from innovative plant-based sources: Water-based extraction and applications in titration

Next Research

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Next Research 2025年第1期2卷

作者： Sinélcio Samuel Taualia Ali Achira Germildo Juvenal Muchave Célio Matias Airone Macalia Neuana Fernando Neuana Ana Paula Capelezzo Raimundo Rafael Gamela domingos Lusitâneo Pier Macuvele Department of Science Engineering Technology and Mathematics Center for Studies in Science and Technology (NECET) University of Rovuma Lichinga Niassa Mozambique Instituto de Química e Biotecnologia (IQB/UFAL) Universidade Federal de Alagoas Maceió Brazil Research Department Open University ISCED Rua Paiva Couceiro 148/07 Macuti Beira Mozambique Green Technologies Laboratory Escola de Química Universidade Federal do Rio de Janeiro Rio de Janeiro Rio de Janeiro 21941-909 Brazil Programa de Pós-graduação em Ciência e Engenharia de Materiais-PPGCEM Universidade Federal de Amazonas Manaus Amazonas Brazil Chemical Department Engineering Community University of Chapecó Region (Unochapecó) Chapecó SC Brazil Division of Agriculture High Polytechnique Institute of Gaza (ISPG) Lionde Chòkwé Gaza CP 1204 Mozambique Graduate Program in Chemical Enginering Santa Catarina Federal University (UFSC) Florianópolis SC Brazil

Researching new plants as potential green indicators marks a meaningful step toward sustainability in analytical chemistry. This study aimed to identify plants with viable applications as eco-friendly indicators in acid-base titration. For this purpose, ten plants were selected based on distinct color properties, namely Euphorbia cotinifolia, Acalypha wilkesiana, Alternanthera brasiliana, Mirabilis jalapa, Datura metel, Euphorbia milii, Jacaranda mimosifolia, Luffa aegyptiaca, Senna didymobotrya , and Canna indica . Aqueous extracts were obtained by maceration, and their performance as acid-base indicators was evaluated and compared with synthetic indicators phenolphthalein and bromothymol blue. The results demonstrated that six of the ten extracts— Euphorbia cotinifolia, Acalypha wilkesiana, Alternanthera brasiliana, Mirabilis jalapa, Datura metel , and Euphorbia milii —were effective in producing visible color changes across pH levels. Notably, the extracts of Alternanthera brasiliana, Acalypha wilkesiana , and Euphorbia milii exhibited highly perceptible color transitions at different pH values, with equivalence points that closely aligned with those obtained by synthetic indicators in all titration types. The titrant volume using natural acid-base indicators was between 4.21 ± 0.06 mL (CH 3 COOH/NH 4 OH) and 7.60 ± 0.44 mL (HCl/NH 4 OH). Statistical analysis revealed significant differences in titrant excesses between these natural extracts and synthetic indicators, with Acalypha wilkesiana and Alternanthera brasiliana achieving up to 15×10 -5 lower HCl excess, indicating their sensitive and precise response in color transition, reinforcing their potential as reliable acid-base indicators. These findings validate the ecological and practical advantages of these plant-based indicators, which are locally available, cost-effective, and stable throughout titrations. As such, they represent a promising and sustainable alternative for laboratories and industries, with

关键词： Plant extracts Eco-friendly acid-base indicators Titration Environment sustainability Green chemistry

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detectable and Undetectable Network Attack Security of Cyber-physical systems

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IFAC-PapersOnLine 2018年第7期51卷 179-185页

作者： Lima, Públio M. Carvalho, Lilian K. Moreira, Marcos V. COPPE Electrical Engineering Program Universidade Federal do Rio de Janeiro Cidade Universitária Ilha do Fundão Rio de JaneiroRJ21.945-970 Brazil

Cyber-physical systems (CPSs) integrate computing and communication capabilities to monitor and control physical processes. In order to do so, communication networks are commonly used to connect sensors, actuators, and controllers, implemented, in general, on programmable Logic Controllers (PLC). The use of communication networks increases the vulnerability of the CPS to attacks that can drive the system to unsafe states. We propose in this paper a defense strategy that prevents damages caused by cyber attacks in the sensor and/or actuator communication channels of supervisory control systems, without changing the behavior of the closed-loop system when it is not attacked. We introduce the definitions of DNA-and UNA-Security, and present necessary and sufficient conditions to verify these properties. © 2018

关键词： Network security Actuators Closed loop control systems Closed loop systems Computation theory Computer crime Control systems Controllers Crime Cyber Physical System Discrete event simulation Embedded systems Process control programmable logic controllers Automata Communication capabilities Cyber physical systems (CPSs) Cyber attacks Monitor and control programmable Logic Controller (PLC) Security Supervisory control systems

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Impact of Urban Expansion on Superficial Water Quality in Periurban Areas

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Journal of Environmental Protection 2019年第12期10卷 1591-1601页

作者： Adriana Schueler Vinicius Perrut dos Santos decio Tubbs Department of Architecture and Urbanism and Post Graduate Program in Territorial Development and Public Policies Universidade Federal Rural do Rio de Janeiro Seropédica Brasil Engineering and Architecture Project Coordination from Universidade Federal Rural do Rio de Janeiro Seropédica Brasil Department of Geoscience Universidade Federal Rural do Rio de Janeiro Seropédica Brasil.

Economic growth promoted by large investment projects in the city of Seropédica and surrounding areas is not accompanied by a territorial planning that supports future growth scenarios. The challenge of the municipality is to prepare to have its territory fully transformed. This study aimed to establish quantitative data on the interferences that the growth model practiced has caused in its main watercourse called Val?o dos Bois. For this, its morphometric characteristics and physicochemical parameters of water quality were measured, and computational simulations of the self-purification processes were performed at various points, as well as the infiltration and precipitation processes, surface flow and leaching in four occupation scenarios of the urbanized areas of the basin, for rains with five different return periods.

关键词： Water Recourses Urban development Computer Simulation Sanitary Sewage

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Corrigendum to “Molecularly imprinted polymers for the detection of volatile biomarkers” [Trends Anal. Chem. 177 (2024) 117783]

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TrAC Trends in Analytical Chemistry 2025年 184卷

作者： Tomasz Wasilewski Sinem Orbay Nathália F. Brito Karol Sikora Ana Claudia A. Melo Matias E. Melendez Bartosz Szulczyński Amitav Sanyal Wojciech Kamysz Jacek Gębicki Department of Inorganic Chemistry Faculty of Pharmacy Medical University of Gdańsk Hallera 107 Gdańsk 80-416 Poland Biomedical Engineering Institute Boğaziçi University Çengelköy 34684 Istanbul Turkey Biomedical Engineering Erzincan Binali Yıldırım University Erzincan 24002 Turkey Program of Cell and Gene Therapy Brazilian National Cancer Institute Rio de Janeiro RJ 20231-050 Brazil Instituto de Química Universidade Federal do Rio de Janeiro Rio de Janeiro RJ 21941-909 Brazil Department of Process Engineering and Chemical Technology Chemical Faculty Gdańsk University of Technology Narutowicza 11/12 Gdańsk 80-233 Poland Department of Chemistry Boğaziçi University Bebek 34342 Istanbul Turkey

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An Electronic Drive for a Switched Reluctance Motor Using a DSC

An Electronic Drive for a Switched Reluctance Motor Using a ...

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Brazilian Power Electronics Conference, COBEP

作者： Brayan Sobral da Fonseca José Andrés Santisteban Graduate Program in Electrical Engineering COPPE - Universidade Federal do Rio de Janeiro Rio de Janeiro Brazil Graduate Program in Electrical and Telecommunications Engineering - PPGEET Universidade Federal Fluminense Niterói Brazil

ISBN: (数字)9781728141800

ISBN: (纸本)9781728141817

With the technological advances using electronic circuits based on microprocessors, the drive and control of electrical machines in electromechanical systems have become increasingly efficient. In this paper, for an axial magnetic flux reluctance motor, for which it is not possible to supply its energy directly from the utility, the developing of an electronic drive and its control is described. Unlike other alternatives, a development module, named DSC (Digital Signal Controller), which is based on a modern microcontroller, allows the reduction of discrete components, like operational amplifiers, and wires. The workbench comprises a three-phase power converter that is equipped with high-speed semiconductor switches, current sensors, voltage sensors and an USB interface to allow communication with a computer. The effectiveness of this approach is verified through open loop and closed loop experimental tests, where the waveforms of the trigger pulses generated by the DSC, the motor currents and their speed were monitored.

关键词： Rotors Reluctance motors Sensors Windings Stator windings Stator cores

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Model Predictive Control with Adaptive Strategy Applied to an Electric Submersible Pump in a Subsea Environment

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IFAC-PapersOnLine 2019年第1期52卷 784-789页

作者： Pedro de A. delou Julia P.A. de Azevedo Dinesh Krishnamoorthy Maurício B. de Souza Argimiro R. Secchi Chemical Engineering Program-COPPE Universidade Federal do Rio de Janeiro Cidade Universitária Centro de Tecnologia 21941-914 Rio de Janeiro RJ Brazil Department of Chemical Engineering Norwegian University of Science and Technology Trondheim Norway Departamento de Engenharia Química/Escola de Química Universidade Federal do Rio de Janeiro Cidade Universitária Rio de Janeiro 21941-909 RJ Brazil

An automatic control of Electric Submersible Pumps (ESPs), employed for artificial lift oil production, is desired in order to ensure safe operation while satisfying pump and well constraints. In this context, the use of an advanced control strategy, such as model predictive control (MPC), can be beneficial in order to deal with the process constraints, variables coupling and optimal operation. In this paper, a linear MPC strategy was applied to an ESP model in order to keep the pump inlet pressure in a desired reference value, minimizing the pump power and respecting the variables constraints. Model adaptation based on homotopic transition between models was proposed for plant nonlinear response regions broadening the range of control.

关键词： Electric Submersible Pump (ESP) Model predictive control (MPC) QDMC (Quadratic/Dynamic Matrix Control) Homotopy Adaptive MPC

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NMPC integrated with optimization layer in offshore production

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IFAC-PapersOnLine 2019年第1期52卷 502-507页

作者： Leonardo D. Ribeiro Argimiro R. Secchi Thiago dAvila Chemical Engineering Program - COPPE - Universidade Federal do Rio de Janeiro Av. Horcio Macedo 2030 - Centro de Tecnologia -Bloco G - Sala G-115 - CEP 21941-914 - Rio de Janeiro - RJ Brazil

In offshore oil production, the occurrence of oscillatory flow regime that causes instabilities is very common, resulting in production losses, occasioned by shutdown, and environmental fine due to the violation of quality requirements. In this work, we evaluate the capability of a nonlinear model predictive controller (NMPC) integrated with an optimization layer to maximize production, minimize energy consumption and mitigate impacts caused by slug flow regimes present in offshore processes. The objective function used in the optimization problem is formulated with the oil and gas production as profit and energy consumption as cost. The degree of freedom of the optimization problem are the topside pressure in the processing plant and the gas-lift injection flow rate in each well. The constraints are the BSW (Basic and Water sediments) and TOG (Grease and Oil content) specifications, capacity of the compression unit and the limits of gas-lift injection, in each well and total flow. The simulated offshore production system encompasses the subsea well, the flowline, the riser, and the topside platform. The subsea part, with four wells, was modeled in OLGA simulator and integrated with a simulated platform in EMSO simulator. The control problem was formulated with nine manipulated variable: gas-lift injection and opening choke valve in each well, and interface level in the separator drum. The results show that the controller can reject the slug disturbances, keeping the BSW and TOG inside the limits and driving the process to the setpoints coming from the optimization layer.

关键词： NMPC Optimization Offshore Control Simulation

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Global priority areas for ecosystem restoration (vol 586, pg 724, 2022)

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NATURE 2022年第7926期609卷 E7-E7页

作者： Strassburg, Bernardo B. N. Iribarrem, Alvaro Beyer, Hawthorne L. Cordeiro, Carlos Leandro Crouzeilles, Renato Jakovac, Catarina C. Braga Junqueira, Andre Lacerda, Eduardo Latawiec, Agnieszka E. Balmford, Andrew Brooks, Thomas M. Butchart, Stuart H. M. Chazdon, Robin L. Erb, Karl-Heinz Brancalion, Pedro Buchanan, Graeme Cooper, David Diaz, Sandra donald, Paul F. Kapos, Valerie Leclere, David Miles, Lera Obersteiner, Michael Plutzar, Christoph de M. Scaramuzza, Carlos Alberto Scarano, Fabio R. Visconti, Piero Rio Conservation and Sustainability Science Centre Department of Geography and the Environment Pontifical Catholic University Rio de Janeiro Brazil International Institute for Sustainability Rio de Janeiro Brazil Programa de Pós Graduacão em Ecologia Universidade Federal do Rio de Janeiro Rio de Janeiro Brazil Botanical Garden Research Institute of Rio de Janeiro Rio de Janeiro Brazil Forest Ecology and Management Group Wageningen University Wageningen The Netherlands Institut de Ciència i Tecnologia Ambientals Universitat Autònoma de Barcelona Barcelona Spain Department of Geography Fluminense Federal University Niterói Brazil Department of Production Engineering Logistics and Applied Computer Science Faculty of Production and Power Engineering University of Agriculture in Kraków Kraków Poland School of Environmental Sciences University of East Anglia Norwich UK Department of Ecology and Evolutionary Biology University of Connecticut Storrs CT USA World Resources Institute Global Restoration Initiative Washington DC USA Tropical Forests and People Research Centre University of the Sunshine Coast Sunshine Coast Queensland Australia School of Biological Sciences University of Queensland St Lucia Queensland Australia Department of Zoology University of Cambridge Cambridge UK BirdLife International Cambridge UK RSPB Centre for Conservation Science Royal Society for the Protection of Birds Edinburgh UK International Union for Conservation of Nature (IUCN) Gland Switzerland World Agroforestry Center (ICRAF) University of the Philippines Los Baños The Philippines Institute for Marine and Antarctic Studies University of Tasmania Hobart Tasmania Australia Institute of Social Ecology University of Natural Resources and Life Sciences Vienna Vienna Austria Division of Conservation Biology Vegetation Ecology and Landscape Ecology University of Vienna Vienna Austria Department of Forest Sciences ‘Luiz de Queiroz’ College of Agriculture University of São Pau

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Vortex-induced vibrations of variable cross-section CWPs under axially varying tension: Numerical investigation with three flow profiles

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Ocean engineering 2025年 338卷

作者： Jian Tan Yu Zhang Yulong Zhang Le Sun Shuai Cui Chen An Segen F. Estefen College of Safety and Ocean Engineering China University of Petroleum Beijing 102249 China Ocean Engineering Program COPPE Universidade Federal do Rio de Janeiro Brazil Key Laboratory of Oil and Gas Safety and Emergency Technology Ministry of Emergency Management Beijing China Key Laboratory of Oil and Gas Production Equipment Quality Inspection and Health Diagnosis State Administration for Market Regulation Beijing China Kunlun Digital Technology Co. Ltd China National Petroleum Corporation Beijing China

Vortex-induced vibration (VIV) poses significant challenges to the structural reliability of Cold-water pipes (CWPs) in Ocean Thermal Energy Conversion (OTEC) systems, particularly when geometric variation and non-uniform axial tension are present. This study develops a high-fidelity semi-analytical framework that combines the Generalized Integral Transform Technique (GITT) with Sturm-Liouville Eigenvalues Using Theta matrices (SLEUTH) method. To analyze the VIV of CWPs with variable cross-sections under three realistic flow profiles: uniform, linear shear, and exponential shear. Validation against finite element simulations and existing literatures confirms the accuracy of the proposed model. Results demonstrate that while uniform flow produces stable standing-wave responses, linear and exponential shear flows introduce progressive mode transitions, nonlinear mode coupling, and broadened excitation spectra. Notably, exponential shear induces spatially asynchronous vortex shedding and chaotic lock-in behavior, revealing energy transfer from dominant to higher-order modes. These phenomena are strongly influenced by the interplay between velocity gradients and structural heterogeneity. The findings provide critical insights into the physical mechanisms governing VIV and offer design guidance for mitigating fatigue-critical responses in CWPs. This work addresses gaps in the current literature by accounting for coupled geometric-tension-flow effects and proposes a robust computational tool for future engineering optimization of marine energy systems.

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