... org/10.1007/s10980-020-01167-6Marco Katzenberger, Helder Duarte, Rick Relyea, Juan Francisco Beltrán, Miguel Tejedo Variation ... j.jtherbio.2014.12.008Marco Katzenberger, John Hammond, Helder Duarte, Miguel Tejedo, Cecilia Calabuig, Rick A. Relyea, Michael ... 01.005Sidney F. Gouveia, Joaquín Hortal, Miguel Tejedo, Helder Duarte, Fernanda A. S. Cassemiro, Carlos A. Navas, José ...
Tópico(s): Sports Performance and Training
1961 - University of Chicago Press | Physiological Zoology
P. F. Scholander, Walter Flagg, Vladimir Walters, Laurence Irving,
... 10.7717/peerj.2072Alex Richter-Boix, Marco Katzenberger, Helder Duarte, María Quintela, Miguel Tejedo, Anssi Laurila Local divergence ...
Tópico(s): Cephalopods and Marine Biology
1953 - University of Chicago Press | Physiological Zoology
Helder Duarte, Miguel Tejedo, Marco Katzenberger, Federico Marangoni, Diego Baldo, Juan F. Beltrán, Dardo A. Martí, Àlex Richter‐Boix, Alejandro González‐Voyer,
Abstract Predicting the biodiversity impacts of global warming implies that we know where and with what magnitude these impacts will be encountered. Amphibians are currently the most threatened vertebrates, mainly due to habitat loss and to emerging infectious diseases. Global warming may further exacerbate their decline in the near future, although the impact might vary geographically. We predicted that subtropical amphibians should be relatively susceptible to warming‐induced extinctions because ...
Tópico(s): Animal Behavior and Reproduction
2011 - Wiley | Global Change Biology
Produção Nacional
Revisado por pares
Marco Katzenberger, John I. Hammond, Helder Duarte, Miguel Tejedo, Cecília Calabuig, Rick A. Relyea,
To forecast biological responses to changing environments, we need to understand how a species's physiology varies through space and time and assess how changes in physiological function due to environmental changes may interact with phenotypic changes caused by other types of environmental variation. Amphibian larvae are well known for expressing environmentally induced phenotypes, but relatively little is known about how these responses might interact with changing temperatures and their thermal ...
Tópico(s): Animal Behavior and Reproduction
2014 - Public Library of Science | PLoS ONE
Produção Nacional
Revisado por pares
Sidney F. Gouveia, Joaquín Hortal, Miguel Tejedo, Helder Duarte, Fernanda A. S. Cassemiro, Carlos A. Navas, José Alexandre Felizola Diniz‐Filho,
Abstract Aim Under the H utchinsonian concept of the realized niche, biotic interactions and dispersal limitation may prevent species from fully occupying areas that they could tolerate physiologically. This can hamper the translation of physiological limits into climatically defined range limits and distorts inferences of evolutionary changes of the adaptive limits (i.e. niche conservatism). In contrast, heritable physiological limits should conform more closely to the position of the niche in the ...
Tópico(s): Animal Behavior and Reproduction
2013 - Wiley | Global Ecology and Biogeography
Àlex Richter‐Boix, Marco Katzenberger, Helder Duarte, María Quintela, Miguel Tejedo, Anssi Laurila,
Although temperature variation is known to cause large-scale adaptive divergence, its potential role as a selective factor over microgeographic scales is less well-understood. Here, we investigated how variation in breeding pond temperature affects divergence in multiple physiological (thermal performance curve and critical thermal maximum [CTmax]) and life-history (thermal developmental reaction norms) traits in a network of Rana arvalis populations. The results supported adaptive responses to face ...
Tópico(s): Physiological and biochemical adaptations
2015 - Oxford University Press | Evolution
Gonçalo Mestre, A.E. Ruano, Helder Duarte, Sérgio N. Silva, Hamid R. Khosravani, Shabnam Pesteh, Pedro Ferreira, Ricardo Horta,
Accurate measurements of global solar radiation, atmospheric temperature and relative humidity, as well as the availability of the predictions of their evolution over time, are important for different areas of applications, such as agriculture, renewable energy and energy management, or thermal comfort in buildings. For this reason, an intelligent, light-weight, self-powered and portable sensor was developed, using a nearest-neighbors (NEN) algorithm and artificial neural network (ANN) models as the ...
Tópico(s): Greenhouse Technology and Climate Control
2015 - Multidisciplinary Digital Publishing Institute | Sensors
A.E. Ruano, Shabnam Pesteh, Sérgio Silva, Helder Duarte, Gonçalo Mestre, Pedro Ferreira, Hamid R. Khosravani, Ricardo Horta,
This paper introduces the Intelligent MBPC (IMBPC) HVAC system, a complete solution to enable Model-Based Predictive Control (MBPC) of existing HVAC installations in a building. The IMPBC HVAC minimizes the economic cost needed to maintain controlled rooms in thermal comfort during the periods of occupation. The hardware and software components of the IMBPC system are described, with a focus on the MBPC algorithm employed. The installation of IMBPC HVAC solution in a University building is described, ...
Tópico(s): Greenhouse Technology and Climate Control
2016 - Elsevier BV | Energy and Buildings
Produção Nacional
Revisado por pares
Luis M. Gutiérrez‐Pesquera, Miguel Tejedo, Miguel Á. Olalla‐Tárraga, Helder Duarte, Alfredo G. Nicieza, Mirco Solé,
Abstract Aim The climate variability hypothesis ( CVH ) states that a positive relationship may exist between the breadth of thermal tolerance range and the level of climatic variability experienced by taxa with increasing latitude, especially in terrestrial ectotherms. Under CVH , we expected to find a correspondence between both thermal tolerance limits ( CT max and CT min), ambient extreme temperature and the range sizes of species. We examined the validity of these predictions in a lowland tropical ...
Tópico(s): Amphibian and Reptile Biology
2016 - Wiley | Journal of Biogeography
Marco Katzenberger, Miguel Tejedo, Helder Duarte, Federico Marangoni, Juan F. Beltrán,
We are currently living in a scenario of climate change in which the rise of the average environmental temperatures and the increase of events of extreme temperature peaks is forecasted, among others. The study of the thermal tolerance and sensitivity is very important, particularly in amphibians, when forecasting the impact of rising temperatures on both the fauna and flora of the world. Knowing that amphibians are an essential part of the world’s terrestrial and aquatic biodiversity, and that ...
Tópico(s): Animal and Plant Science Education
2012 - | Revista da Biologia
Produção Nacional
Revisado por pares
Marco Katzenberger, Helder Duarte, Rick A. Relyea, Juan F. Beltrán, Miguel Tejedo,
Communities usually possess a multitude of interconnected trophic interactions within food webs. Their regulation generally depends on a balance between bottom-up and top-down effects. However, if sensitivity to temperature varies among species, rising temperatures may change trophic interactions via direct and indirect effects. We examined the critical thermal maximum (CTmax) of 19 species from temperate wetlands (insect predators, amphibian larvae, zooplankton and amphipods) and determined if they ...
Tópico(s): Insect and Arachnid Ecology and Behavior
2021 - Elsevier BV | Journal of Thermal Biology
Hélder Pereira, Duarte Sousa, António Sá Cunha, Renato Andrade, João Espregueira‐Mendes, Joaquím M. Oliveira, Rui L. Reis,
In recent times, the field of tissue engineering and regenerative medicine (TERM) has considerably increased the extent of therapeutic strategies for clinical application in orthopedics. However, TERM approaches have its rules and requirements, in the respect of the biologic response of each tissue and bioactive agents which need to be considered, respected, and subject of ongoing studies. Different medical devices/products have been prematurely available on the market and used in clinics with limited ...
Tópico(s): Shoulder Injury and Treatment
2018 - Springer Nature | Advances in experimental medicine and biology
Produção Nacional
Revisado por pares
Lúcia Helena de Moura Sena, Valderez Pontes Matos, Jamile Érica de Medeiros, Helder Henrique Duarte Santos, Ana Patrícia Rocha, Rinaldo Luíz Caraciolo Ferreira,
ABSTRACT This paper aimed to evaluate the effect of packaging, environments, and storage periods on physiological quality of Talisia esculenta (A. St. Hil.) Radlk seeds. Seeds were conditioned in PET transparent bottle, Kraft paper bag, and transparent polyethylene bag; they were stored in chamber (18 °C; 50% RH), in freezer (-21 ± 2 °C; 95% RH), and under laboratory natural environment (28 ± 5 °C; 65% RH). They were evaluated at the 0, 25th, 50th, 75th, and 100th storage day for moisture content, thousand ...
Tópico(s): Plant tissue culture and regeneration
2016 - Sociedade de Investigações Florestais | Revista Árvore
Produção Nacional
Revisado por pares
Daniela de Souza Pinto, Helder Brito Duarte, Camila de Almeida Costta, Jorge Luís Motta dos Anjos, Ludmilla Campos Gaspar, Reinaldo Luz Melo, Camilla de Souza Menezes,
INTRODUÇÃO: A Neuromuscular Electrical Stimulation (NMES) é um importante aliado do paciente crítico, favorecendo contrações ativas mesmo em estado que requer imobilidade.OBJETIVO: Verificar a segurança da aplicação da NMES em Unidades de Terapia Intensiva (UTIs) de um hospital público da cidade de Salvador. MÉTODO: Trata-se de estudo piloto, de intervenção. Os dados foram coletados no período de fevereiro a junho de 2018, com amostra por conveniência em uma população de pacientes críticos intubados ...
Tópico(s): Healthcare Regulation
2019 - ESCOLA BAHIANA DE MEDICINA E SAÚDE PÚBLICA | Revista Pesquisa em Fisioterapia
Produção Nacional
Eduara Ferreira, Valderez Pontes Matos, Ricardo Barros Silva, Helder Henrique Duarte Santos, L.H.M. Sena,
This study aimed to evaluate the performance of different thermal scarification methods to overcome Piptadenia moniliformis seeds dormancy. The thermal treatments used were: control (no treatment - T1); seed immersion in water at 80 and 100 °C for 10 (T2 and T6, respectively), 30 (T3 and T7, respectively) and 60 (T4 and T8, respectively) seconds; seed immersion in water at 80 °C until cooling to room temperature (28 °C) (T5), and seed immersion in water at 100 °C until cooling to room temperature (28 °C) (T9). ...
Tópico(s): Plant tissue culture and regeneration
2014 - UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO | Revista Brasileira de Ciências Agrárias - Brazilian Journal of Agricultural Sciences
José A. Afonso, Helder G. Duarte, Luiz A. Lisboa Cardoso, Vítor Monteiro, João L. Afonso,
This paper presents the design, implementation, and testing of a wireless communication system for automatic identification of e-bikes and management of their battery charging in the context of dynamic inductive wireless power transfer (DIWPT) lanes. The proposed system checks if an e-bike, uniquely identified by its RFID tag, is authorized to receive energy from the lane coils and acts accordingly. An authentication mechanism was developed based on the use of embedded Wi-Fi boards attached to the ...
Tópico(s): RFID technology advancements
2020 - Multidisciplinary Digital Publishing Institute | Electronics
Sara Durão, Pedro S. Gomes, Bruno Colaço, J. C. Silva, Hélder Fonseca, José Alberto Duarte, António Felino, Maria Helena Fernandes,
Tópico(s): Bone Tissue Engineering Materials
2014 - Springer Science+Business Media | Osteoporosis International
Glauco Barbosa da Silva, Helder Gomes Costa, Marta Duarte de Barros,
The main purpose of this paper is to present a literature review of Entrepreneurship Education in engineering courses. From aninitial search in Scopus, 16,835 documents were collected. This search was enhanced by applying filters to the documents.Conducting a new research with the keywords Entrepreneurship and Education, and restricting to articles in journals and theengineering field, 74 articles were selected and mapped by a Webibliomining model. A few research studies have examined thepractices ...
Tópico(s): Entrepreneurship Studies and Influences
2015 - Tempus Publications | International journal of engineering education
Pedro Bação, António Portugal Duarte, Hélder Sebastião, Redzepagic Srdjan,
This paper investigates the information transmission between the most important cryptocurrencies -Bitcoin, Litecoin, Ripple, Ethereum and Bitcoin Cash. We use a VAR modelling approach, upon which the Geweke’s feedback measures and generalized impulse response functions are computed. This methodology allows us to fully characterize the direction, intensity and persistence of information flows between cryptocurrencies. At the availabledata granularity, most of information transmission is contemporaneous, ...
Tópico(s): Complex Systems and Time Series Analysis
2018 - De Gruyter Open | Scientific Annals of Economics and Business
Ultrasound usage as a hyperthermia therapeutic procedure still requires more research on spatial-temporal temperature propagation characterization over tissues and on non-invasive temperature monitoring techniques. Present work compares how temperature is propagated inside tissue phantoms without and with blood vessels. The artificial vessels simulated common carotid and right hepatic arteries pulsatile blood flow. Phantoms were heated by a therapeutic ultrasound (TU) device emitting continuously ...
Tópico(s): Photoacoustic and Ultrasonic Imaging
2013 - Springer Nature | IFMBE proceedings
Produção Nacional
Revisado por pares
Relber Aguiar Gonçales, Hélder Novais Bastos, Cláudio Duarte‐Oliveira, Daniela Antunes, Oksana Sokhatska, Maria Jacob, Rui Rolo, Cláudia F. Campos, Sérgio Daishi Sasaki, Alessia Donato, Sarah N. Mapelli, Sandra Costa, Conceição Souto Moura, Luís Delgado, António Morais, Egídio Torrado, Frank L. van de Veerdonk, Thomas Weichhart, John D. Lambris, Ricardo Silvestre, Cecília Garlanda, Alberto Mantovani, Cristina Cunha, Agostinho Carvalho,
Rationale: Sarcoidosis is a multisystemic inflammatory disease characterized by the formation of granulomas in response to persistent stimuli. The long pentraxin PTX3 (pentraxin 3) has emerged as a component of humoral innate immunity with essential functions in the resolution of inflammation, but its role during granuloma formation is unknown. Objectives: To evaluate PTX3 as a modulator of pathogenic signals involved in granuloma formation and inflammation in sarcoidosis. Methods: Peripheral blood ...
Tópico(s): Inflammasome and immune disorders
2022 - American Thoracic Society | American Journal of Respiratory and Critical Care Medicine
Produção Nacional
Revisado por pares
Marcello Casaccia Bertoluci, João Eduardo Nunes Salles, José Silva‐Nunes, Hermelinda Cordeiro Pedrosa, Rodrigo O. Moreira, Rui Duarte, Davide Carvalho, Fábio Rogério Trujilho, João Filipe Cancela dos Santos Raposo, Erika B. Parente, Fernando Valente, Fábio Ferreira de Moura, Alexandre Hohl, Miguel Melo, Francisco Araújo, Rosa Maria Príncipe, Rosane Kupfer, Adriana Costa e Forti, Cynthia Melissa Valério, Hélder Ferreira, João Manuel Sequeira Duarte, José Francisco Kerr Saraiva, Melanie Rodacki, Maria Helane Costa Gurgel Castelo, Mariana P. Monteiro, Patrícia Branco, Pedro Manuel Patricio de Matos, Pedro Carneiro de Melo Pereira de Magalhães, R Betti, Rosângela Réa, Thaisa Dourado Guedes Trujilho, Lana Catani Ferreira Pinto, Cristiane Bauermann Leitão,
Abstract Background In current management of type 2 diabetes (T2DM), cardiovascular and renal prevention have become important targets to be achieved. In this context, a joint panel of four endocrinology societies from Brazil and Portugal was established to develop an evidence-based guideline for treatment of hyperglycemia in T2DM. Methods MEDLINE (via PubMed) was searched for randomized clinical trials, meta-analyses, and observational studies related to diabetes treatment. When there was insufficient ...
Tópico(s): Metabolism, Diabetes, and Cancer
2020 - BioMed Central | Diabetology & Metabolic Syndrome
Produção Nacional
Revisado por pares
Helder Henrique Duarte Santos, Valderez Pontes Matos, Aurélia Pietrina da Costa Albuquerque, Lúcia Helena de Moura Sena, Elane Grazielle Borba de Sousa Ferreira,
Este trabalho teve por objetivo descrever as características morfológicas de frutos, sementes e plântulas de Averrhoa bilimbi L. oriundas de frutos imaturos e maduros. Os frutos de A. bilimbi foram separados de acordo com a sua coloração em frutos imaturos e maduros. O registro das características morfológicas dos frutos, sementes e plântulas foram realizados por meio de ilustrações manuais, fotografias e descrições de todos os aspectos morfológicos. Para o estudo da morfologia da germinação e plântula, ...
Tópico(s): Plant tissue culture and regeneration
2014 - UNIVERSIDADE FEDERAL DE SANTA MARIA | Ciência Rural
Catarina Tomás, Emanuel Oliveira, DANIEL WALLACE ASSIS DE SOUSA, Matheus Uba Chupel, Guilherme Eustáquio Furtado, Clara Rocha, Ana Teixeira, Pedro Lopes Ferreira, C. Alves, Stefan Gisin, Elisabete Catarino, Nelma Carvalho, Tiago Coucelo, Luís Américo Silva Bonfim, Carina Silva, Débora Franco, Jesús Alcoba González, Maria Helena de Agrela Gonçalves Jardim, Rita Silva, Cristina Lavareda Baixinho, Ma Helena Presado, Ma Fátima Marques, Mário E. Cardoso, Marina Cunha, Joana Mendes, Ana Xavier, Ana Galhardo, Margarida Couto, João Frade, Carla Nunes, João R. Mesquita, María Säo José Nascimento, Guilherme Gonçalves, Conceição Castro, Alice Mártires, M. João Monteiro, Conceição Rainho, Francisco P. Caballero, Fátima M. Monago, José T. Guerrero, Rocio M. Monago, Africa P. Trigo, Milagros L. Gutierrez, Gemma M. Milanés, Mercedes G. Reina, Ana G. Villanueva, Ana S. Piñero, Isabel R. Aliseda, Francisco Buitrago Ramírez, Andrea Ribeiro, Ana Quelhas, Maria Conceição Manso, Francisco P. Caballero, José T. Guerrero, Fátima M. Monago, Rafael Brito Santos, Nuria R. Jimenez, Cristina G. Nuñez, Inmaculada Rodríguez Gómez, Ma Jose L. Fernandez, Laura A. Marquez, Ana L. Moreno, Ma Jesus Tena Huertas, Francisco Buitrago Ramírez, Daniel Seabra, Ma Céu Salvador, Luciene Muniz Braga, Pedro Parreira, Anabela Salgueiro‐Oliveira, Cristina Arreguy-Sena, Bibiana F. Oliveira, Ma Adriana Henriques, Joana Santos, Sara Lebre, Alda Marques, Clarinda Festas, Sandra Rodrigues, Andrea Ribeiro, José Lumini‐Oliveira, Ana Gabriela Figueiredo, Francisco J. Hernandez-Martinez, Liliana Campi, Ma Pino Quintana-Montesdeoca, Juan F. Jimenez-Diaz, Bienvenida C. Rodriguez-De-Vera, Alexandra Parente, Ma Augusta Mata, Ana Ma Pereira, Adília Fernandes, Manuel Brás, Ma Rosário Pinto, Pedro Parreira, Marta Lima Basto, Ana C. Rei, Lisete Mónico, Gilberta Sousa, Clementina Morna, Otília Freitas, Gregório Freitas, Ana Carolina Gomes Jardim, Rita P. Vasconcelos, Lina G. Horta, Roger dos Santos Rosa, Luís Fernando Kranz, Rita C. Nugem, Mariana Santiago Siqueira, Ronaldo Bordin, Rosiane Kniess, Josimari Telino de Lacerda, Joana Guedes, Idalina Machado, Sidalina Almeida, Adriano Zilhão, Hélder Alves, Óscar Ribeiro, Ana Paula Martins Amaral, Ana Maria Ribeiro dos Santos, Joana Monteiro, Ma Clara Rocha, Rui Cruz, Ana Paula Martins Amaral, Marina Lourenço, Ma Clara Rocha, Rui Cruz, Sandra Regina Masetto Antunes, Verónica Mendonça, Isabel Andrade, Nádia Osório, Ana Valado, Armando Caseiro, Antonio Padua y Gabriel, Anabela Correia Martins, Fernando Mendes, Lídia Cabral, Manuela Ferreira, Amadeu Gonçalves, Tatiana Durão D`Ávila Luz, Leonardo Gomes de Oliveira Luz, Raúl A. Martins, Alice Murteira Morgado, Maria da Luz Vale-Dias, Rui Porta-Nova, Tânia Cristina Malezan Fleig, Éboni Marília Reuter, Miriam Beatris Froemming, Sabrina Luciane Camara Guerreiro, Lisiane Lisbôa Carvalho, Daniel Guedelha, Pedro S. Coelho, A.T. Pereira, António Calha, Raúl Cordeiro, Ana Gonçalves, Ana Certo, Ana Cristina Araújo de Andrade Galvão, Ma Augusta Mata, Aline Welter, Elayne Crestani Pereira, Sandra Aparecida Ribeiro, Márcia Regina Kretzer, Juan-Fernando Jiménez-Díaz, Carla Jiménez-Rodríguez, Francisco-José Hernández-Martínez, Bienvenida-Del-Carmen Rodríguez-De-Vera, Alexandre Marques-Rodrigues, Patrícia Brazil Pereira Coelho, Tiago Bernardes, Alexandre de Araújo Pereira, Patrícia Sousa, João Ghizzo Filho, Nazaré Otília Nazário, Márcia Regina Kretzer, Odete Amaral, António Garrido, Nélio Veiga, Carla Nunes, Ana Rita Pedro, Carlos Pereira, António Almeia, Hélder Miguel Fernandes, Carlos Vasconcelos, Nélson Sousa, Víctor Machado Reis, M. João Monteiro, Romeu Mendes, Isabel Pinto, Tânia C. S. P. Pires, João Gama, Vera Preto, Norberto Silva, Carlos Pires Magalhães, Matilde Martins, Mafalda Duarte, Constança Paúl, Ignácio Martín, Arminda Pinheiro, S. Xavier, J. Azevedo, E. Bento, C. Marques, M. Marques, A. Macedo, A.T. Pereira, José Pedro Almeida, António Almeida, Josiane Alves, Nélson Sousa, Francisco Saavedra, Romeu Mendes, Ana S. Maia, Michelle Teixeira Oliveira, Anderson Reis de Sousa, Paulo P. Ferreira, Luci S. Lopes, Eujcely C. Santiago, Sílvia Monteiro, Ângelo Jesus, Armanda Colaço, Antônio Ivo de Carvalho, Rita P. Silva, Agostinho Cruz, Ana Ferreira, Catarina Marques, João Paulo Figueiredo, Susana Paix�ão, Ana Ferreira, Carla Lopes, Fernando Moreira, João Paulo Figueiredo, Ana Ferreira, Diana Ribeiro, Fernando Moreira, João Paulo Figueiredo, Susana Paix�ão, Telma Fernandes, Diogo Amado, Jéssica Denise Vieira Leal, Marcelo Costa Velho Mendes de Azevedo, Sónia Ramalho, Catarina Mangas, Jaime Ribeiro, Rita Maria de Abreu Gonçalves, Amélia Fernandes Nunes, Ana Rita Tuna, Carlos Martins, Henriqueta D. Forte, Cláudia Costa, José António Tenedório, Paula Santana, José Augusto Andrade, Joana Pinto, C. Campofiorito, S. C. Nunes, Ana Sofia Carmo, A. Kaliniczenco, Bárbara Shibuya Alves, Francisco Mendes, Carlos Jesus, Felipe Paiva Fonseca, Flávia de Sousa Gehrke, Carlos Albuquerque, Rita Batista, Madalena Cunha, António Dias, Olivério Ribeiro, Rosa Maria Grangeiro Martins, Teresa Madeira, Catarina Peixoto-Plácido, Nuno Rebelo dos Santos, Osvaldo Santos, Astrid Bergland, Asta Bye, Carla Lopes, Violeta Alarcão, Beatriz Goulão, Nuno Mendonça, Paulo Nicola, J. Gorjão Clara, João Gomes, Ana Querido, Catarina Tomás, Daniel Carvalho, Marina Cordeiro, Marlene Rosa, Alda Marques, Daniela Brandão, Óscar Ribeiro, Lia Araújo, Constança Paúl, Beatriz Minghelli, Sylvina Richaud, Ana Laura Mendes, Joana Marta‐Simões, Inês A. Trindade, Cláudia Ferreira, Teresa Carvalho,
... e-learning modules for Pharmacology Ângelo Jesus, Nuno Duarte, José C. Lopes, Hélder Nunes, Agostinho Cruz P34 Perspective of nurses involved ...
BioMed Central
Produção Nacional
Revisado por pares
Ricardo Vignoto Fernandes, Noel Bristow, Vasil Stoichkov, Helder Scapin Anizelli, José Leonil Duarte, Édson Laureto, Jeff Kettle,
Luminescence down-shifting (LDS) is used in several photovoltaic technologies aiming to improve the photon conversion efficiency (PCE) of the devices through the increase of the light harvesting in the regions of the electromagnetic spectrum where the EQE of the solar cells is poor.The aim of this work was to produce films of mixtures (blends) of two luminescent materials, dispersed in a poly-methyl methacrylate (PMMA) matrix, hoping to improve their properties both as LDS layer and as UV filter when ...
Tópico(s): Thin-Film Transistor Technologies
2016 - Institute of Physics | Journal of Physics D Applied Physics
Hélder Leonardo Duarte Martins,
SUMMARY In the context of developing a comprehensive national health service based on primary health care, major changes have been made in independent Mozambique to the chaotic pharmaceutical situation inherited from the colonial period. By means principally of an effective national formulary and a central state procurement system, inappropriate drugs have been eliminated and the number of products in the country has been greatly reduced. Combined with compulsory generic‐name prescribing and the ...
Tópico(s): Malaria Research and Control
1983 - Wiley | The IDS Bulletin
Miguel Tejedo, Helder Duarte, Luis M. Guiérrez Pesquera, Juan F. Beltrán, Marcos Katzenberger, Federico Marangoni, Carlos A. Navas, Alfredo G. Nicieza, Rick A. Relyea, Enrico L. Rezende, Alex Richter Boix, Mauro Santos, Monique Simon, Mirco Solé,
Agencia Espanola de Cooperacion y Desarrollo (AECID) A/016892/08, A/023032/09 y AP/038788/11
Tópico(s): Physiological and biochemical adaptations
2012 - | Boletín de la Asociación Herpetológica Española
Duarte Brito, Hélder Vasconcelos,
Abstract In this paper, we study the competitive effects of bundled discounts offered by pairs of independent firms. In a setting with vertically differentiated goods, where firms decide whether to participate in a discounting scheme before prices are set, it is shown that, in equilibrium, all pairs of firms producing goods of the same quality level offer bundled discounts. Relative to the no‐bundling benchmark, we find that (i) all headline prices rise, (ii) all bundle prices, net of the respective ...
Tópico(s): Consumer Market Behavior and Pricing
2014 - Wiley | Scandinavian Journal of Economics
Carlos Tavares Bello, João Cassis, Hélder Simões, João Sequeira Duarte,
Thyroid lymphomas are rare clinical entities that may result from either the primary intrathyroid de novo or secondary thyroid gland involvement of a lymphoma. Among these, the Hodgkin’s subtype is quite uncommon, accounting for 0.6–5% of all thyroid malignancies. The authors report on a 76-year-old female presenting with a thyroid nodule that, upon surgical excision, was found to be a nodular lymphocyte predominant Hodgkin lymphoma of the thyroid. So far, thyroid involvement by this variant has ...
Tópico(s): Genetic factors in colorectal cancer
2016 - Hindawi Publishing Corporation | Case Reports in Endocrinology
Filipe V. Duarte, Hélder Araújo, António Dourado,
An automatic visual inspection system designed for dirt inspection in the pulp and paper industry is presented. A new hierarchical region oriented segmentation algorithm is introduced. The algorithm is tuned according to the singular characteristics of the pulp samples. A criterion based on the maximisation of the local contrast is defined in order to perform a defect region segmentation of the pulp and paper images. Some optimisations are introduced to avoid an excessive computational load.
Tópico(s): Medical Image Segmentation Techniques
1999 - Elsevier BV | Computers & Industrial Engineering