176 documents found, page 1 of 18
Seroprevalence of Mycobacterium avium subsp. paratuberculosis Infections in Sma...
Quintas, Helder; Benavides, Júlio; Jacob-Ferreira, João; Afonso, Paulo; Coelho, Ana CláudiaParatuberculosis, also known as Johne’s disease, is a granulomatous enteritis in both domestic and wild ruminants caused by the bacterium Mycobacterium avium subsp. paratuberculosis. Understanding the prevalence of this disease in small ruminants is essential for disease control and prevention strategies. A systematic review of the literature was conducted using the PubMed, ScienceDirect and Scopus databases to...
Study of body composition and motor competence in children from the 1st basic c...
Afonso, P.; Rebelo, Miguel; HONÓRIO, SAMUEL; Santos, Jorge Manuel Folgado; Pais, António; Afonso, Paulo; Marques, Catarina; Diniz, Afonso; Serrano, JoãoChildhood obesity is a public health problem that affects many parts of the world, and is one of the factors that has negatively influenced levels of motor competence at an early age. However, these relationships remain poorly investigated. The aim of this study was to assess body composition (BC) and motor competence (MC), as well as to study their relationship with school performance in primary school childre...
Furry hosts and fungal guests: Investigating dermatophyte carriage in shelter a...
Afonso, Paulo; Quintas, Helder; Vieira, Ana Filipa; Pinto, Eduardo; Matos, Manuela; Soares, Ana; Cardoso, Luís Miguel; Coelho, Ana CláudiaDermatophytosis is a widespread fungal infection affecting both animals and humans, commonly known as ringworm. Dermatophytosis results in the breakdown of keratin, leading to skin, hair, and claw lesions, and has an important global prevalence that is often underestimated. While typically self-limiting, dermatophytosis can pose a severe risk due to its contagious nature, particularly in shelters. This study ai...
Whisking away the veil: exploring feline immunodeficiency virus and feline leuk...
Afonso, Paulo; Cardoso, Luís Miguel; Quintas, Helder; Coelho, Ana CláudiaFeline immunodeficiency virus (FIV) and feline leukaemia virus (FeLV) are important pathogens affecting feline hosts worldwide, compromising the health, well-being, quality of life, and lifespan of infected cats. This study explores the prevalence of these viral agents among shelter cats in Portugal, aiming to un-ravel their complexities and implications. The prevalence of FIV and FeLV was assessed by collectin...
Health Sentinels: Canine Parvovirus and Coronavirus in Portuguese Shelter Dogs
Afonso, Paulo; Cardoso, Luís Miguel; Quintas, Helder; Coelho, Ana CláudiaThis study investigates the prevalence of Canine Parvovirus (CPV) and Canine Coronavirus (CCoV) among shelter dogs in Portugal. Despite advancements in veterinary medicine and widespread vaccination efforts, CPV and CCoV continue to pose significant health threats to the canine population, particularly in high-density environments such as shelters. Through a cross-sectional study involving 240 shelter dogs in f...
Ehrlichia canis and Rickettsia conorii Infections in Shelter Dogs: Seropositivi...
Afonso, Paulo; Lopes, Ana Patrícia; Quintas, Helder; Cardoso, Luís Miguel; Coelho, Ana CláudiaA cross-sectional study was conducted to gain insight into the epidemiology of canine ehrlichiosis and rickettsiosis in northern Portugal. Specific IgG antibodies to Ehrlichia canis were analysed using a commercial enzyme-linked immunosorbent assay (ELISA), and antibodies to Rickettsia conorii were analysed using a commercial indirect immunofluorescence antibody test (IFAT). A total of 113 dogs from two differe...
Optimization models for hydrokinetic energy generated downstream of hydropower ...
de Figueiredo, Nelio Moura; GamaTobias, Maisa Sales; Filho, Lucio Carlos Pinheiro Campos; Afonso, PauloThe mitigation of the energy crisis necessitates the exploration of alternative sources, including hydrokinetic energy derived from downstream regions of hydroelectric facilities. In this context, harnessing the defluent flow from hydroelectric plants through hydrokinetic turbines has become increasingly vital. This study aims to develop a comprehensive model that furnishes essential parameters for the design o...
Proposal for the implementation of costing systems: A project management perspe...
Jiménez Carabalí, Victor; Afonso, PauloThe estimation of the cost of goods and services offered by an organization is becoming increasingly complex due to the large number of different activities taking place, compounded by the existing uncertainty within and outside organizations. Various methodologies, such as activity-based costing and time-based costing, are used for cost estimation. However, from a technical standpoint, these methodologies have...
Simulating product costs under stochastic conditions using the ABC matrix model
Henriques, Marcelo Filipe Nunes; Dias, Luis S.; Afonso, Paulo; Ferreira, Luís PintoCosting models tend to follow a top-down or, alternatively, a bottom-up approach, following, respectively, a financial/accounting or an engineering/production perspective. Regardless of the approach used, cost models tend to be based on past information and be deterministic, contributing little to decision making at the organization’s operational and strategic levels. Moreover, the current business environment ...
A machine learning predictive model for ship fuel consumption
Melo, Rhuan Fracalossi; Figueiredo, Nelio Moura de; Tobias, Maisa Sales Gama; Afonso, PauloFeatured Application: Featured Application: The machine learning predictive model of fuel consumption proposed can help shipping companies toward an increasingly efficient and sustainable energy consumption with reduced operational and logistics costs, supporting a more competitive position in the market in compliance with environmental and safety regulatory standards. Water navigation is crucial for the moveme...