A Bloody Polyp in the Sigmoid Colon

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Development and application of a composite circularity index

Resource depletion and environmental pollution are increasingly a matter of concern for their adverse effects on ecosystems, human health, and the economy. Circular Economy (CE) practices can help us address these chal-lenges. This paper proposes a composite circularity index (CI) to assess the level of implementation of CE practices. The main advantage of the proposed index is its ability to combine multiple indicators of circularity for different units operating in a given sector (given as inputs), using a 'Benefit of the Doubt' model. This new model is innovative in the manner it deals with ordinal scales and also by considering both relative and absolute performance indices. These indices are computed using mathematical programming tools, building on ideas from Data Envelopment Analysis models.Although the model can be applied to any sector, this work addresses the hotel industry in particular. The selection of indicators for this CI was based on seven blocks of the Circular Economy Action Plan and a literature review of circular practices. An application of the proposed index is performed by using data from Portuguese and Spanish hotels. The proposed CI allows the identification of the organizations with the best and worst performance in implementing the CE practices and clarifying the benchmarks they could follow to improve their level of circularity. Moreover, the index analysis also provides specific targets for improvement, indicating which circular practices should be improved for the lower performers to reach the implementation levels of the best performers.info:eu-repo/semantics/publishedVersio

Performance Analysis of XOR-Based Routing Protocols in Vehicular ad hoc Networks

This book is part of a series exploring the dynamic universe of the Internet in the 21st century. Collected here are papers discussing a wide range of topics and issues impacting and relating to the Internet such as: internet traffic conditioning methods applied to wireless networks; design knowledge management and sharing using XML; FGPA-Based video streaming; internet traffic modeling and an analysis of XOR-based flat routing protocols. (Imprint: Nova Press

Direct seed and precision agriculture technologies

A importância da sementeira directa tanto do ponto de vista agronómico como ambiental tem sido evidenciada por diversos autores. A transição de técnicas convencionais de sementeira com mobilização do solo para sementeira directa pode ser mais ou menos facilitada pelo tipo de solo e época de realização da operação. Contudo nos primeiros anos de instalação de culturas em sementeira directa, a irregularidade de resistência à penetração do solo não mobilizado pelo semeador pode estar na origem de heterogeneidades de distribuição da semente, nomeadamente no que respeita à sua profundidade. A utilização de tecnologias de Agricultura de Precisão permitindo identificar in situ algumas destas situações podem contribuir para a correcção das mesmas. No I ensaio realizado na Herdade da comenda em Caia os resultados preliminares indicam correlação moderada entre 3 níveis de profundidade de sementeira relativamente força exercida na respectiva linha propondo o desenvolvimento de dispositivos dinâmicos de controlo de profundidade em semeadores de sementeira directa

Balanite de Zoon e Líquen Escleroso: Uma Associação Rara

Zoon balanitis and lichen sclerosus are both chronic inflammatory disorders of the genital mucosa that usually affect middle-aged or elderly uncircumcised men.Although the precise etiology of Zoon balanitis is still unclear, a pathogenic role of irritant and mechanical factors has been suggested. Therefore, foreskin sclerosis and phimosis caused by male genital lichen sclerosus may trigger the development of Zoon balanitis. However, until the present, only three cases with clinical and histopathologic features consistent with synchronous presentation of both disorders have been described. We report the case of a 70-year-old male who developed Zoon balanitis in association with lichen sclerosus, that cleared only after circumcision.A balanite de Zoon e o líquen escleroso são ambas doenças inflamatórias crónicas da mucosa genital, que afetam predominantemente homens não circuncisados de meia-idade ou idosos.Apesar da etiologia da balanite de Zoon não estar ainda totalmente clarificada, tem sido sugerido que fatores irritantes e mecânicos locais podem desempenhar um papel relevante na sua fisiopatologia. Assim, a esclerose do prepúcio e a fimose induzida pelo líquen escleroso genital podem potenciar o seu desenvolvimento da balanite de Zoon. Contudo, até ao presente, foram descritos apenas três casos com características clínicas e histológicas compatíveis com apresentação síncronas de ambas as doenças. Apresentamos o caso de um doente de 70 anos, não circuncisado, que desenvolveu balanite de Zoon em associação a líquen escleroso e que resolveram apenas após circuncisão

Asociación entre eosinófilos de sangre periférica y cutáneos con la gravedad del penfigoide ampolloso y los resultados terapéuticos

© 2022 AEDV. Published by Elsevier España, S.L.U. This is an open access article under the CC BY-NC-ND license (http:// creativecommons.org/licenses/by-nc-nd/4.0/).Background and aims: A dermal inflammatory infiltrate rich in eosinophils is a prominent histological feature of bullous pemphigoid (BP) and peripheral blood eosinophilia has been documented in 50-60% of BP patients. Nevertheless, the impact of circulating and dermal infiltrate eosinophil levels on BP remains poorly understood. The main objective of this work was to investigate the association of peripheral blood and dermal infiltrate eosinophil levels with clinical and immunological characteristics of the disease. Material and methods: Retrospective cohort study including all patients diagnosed with BP between 2011 and 2020. Results: The study cohort included 233 patients with BP. The mean baseline peripheral blood eosinophil count was 956.3 ± 408.6 × 106/L and the mean number of tissue eosinophils at the dermal hot spot area was 30.5 ± 19.0. Patients with disseminated presentation (i.e. BSA > 50%) had significantly higher peripheral blood eosinophil counts (P = .028). Mucosal involvement was significantly associated with lower dermal eosinophil count (P = .001). Requiring inpatient care and relapsing were significantly associated with high peripheral blood eosinophil count (P = .025; P = .020, respectively). Among the 68 patients who experienced a relapse, 31 had peripheral blood eosinophilia (i.e. > 500 × 106/L) at relapse (44.2%). Peripheral blood eosinophil counts at baseline and at relapse were significantly correlated (r = 0.82, P < .001). Conclusions: Peripheral blood and cutaneous eosinophils levels may be useful biomarkers for disease activity and treatment outcomes in BP. Monitoring peripheral blood eosinophil counts may allow early detection of relapse.info:eu-repo/semantics/publishedVersio