Differentiation between ischemic and heart rate related events using the continuous wavelet transform

Cardiovascular diseases are one of the main causes of death in the world, as a result much efforts have been made to detect early ischemia. Traditionally changes produced in the ST or STT segments of the heartbeat were analyzed. The main difficulty relies on alterations produced in the ST or STT segment because of non ischemic events, such as changes in the heart rate, the ventricular conduction or the cardiac electrical axis. The aim of this work is to differentiate between ischemic and heart rate related events using the information provided by the continuous wavelet transform of the electrocardiogram. To evaluate the performance of the classifier, the Long Term ST Database was used, with ischemic and non ischemic differentiated events annotated by specialists. The analysis was performed over 77 events (52 ischemic and 25 heart rate related), obtaining a sensitivity and positive predictivity of 86.64% for both indicators.Fil: Fernández Biscay, Carolina. Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Ingeniería Biomédica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Instituto Argentino de Matemática Alberto Calderón; ArgentinaFil: Arini, Pedro David. Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Ingeniería Biomédica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Instituto Argentino de Matemática Alberto Calderón; ArgentinaFil: Rincon Soler, Anderson Ivan. Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Ingeniería Biomédica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Instituto Argentino de Matemática Alberto Calderón; ArgentinaFil: Bonomini, Maria Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Instituto Argentino de Matemática Alberto Calderón; Argentina. Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Ingeniería Biomédica; Argentina8th International Work-Conference on the Interplay between Natural and Artificial ComputationAlmeríaEspañaInterplay between Natural and Artificial Computatio

Adição de plasma seminal ao sêmen descongelado e taxa de prenhez de ovelhas inseminadas em tempo fixo

Avaliou-se o efeito da adição de plasma seminal ovino ao sêmen descongelado sobre a taxa de prenhez de ovelhas em rebanho comercial. Cento e setenta e quatro ovelhas cruza Texel foram distribuídas em quatro tratamentos: T1) inseminação artificial cervical (IAC) com sêmen descongelado (SD) diluído em solução tampão fosfato salino (PBS); T2) IAC com SD e adição de plasma seminal ovino; T3) grupo-controle I: IAC com sêmen fresco diluído em PBS; T4) grupo-controle II: inseminação artificial por laparoscopia com SD diluído em PBS. Para indução de cio, utilizaram-se esponjas impregnadas com acetato de medroxiprogesterona (MAP) por 12 dias, com aplicação intramuscular de 400 UI de eCG (Novormon®) e de 37,5µg de cloprostenol sódico (Sincrocio®), no dia da retirada das esponjas. O aparecimento de cio foi monitorado com rufiões vasectomizados a partir da retirada das esponjas até a inseminação artificial em tempo fixo - 54 a 60 horas. A taxa de prenhez do tratamento com adição de plasma seminal ao sêmen descongelado (7,0%) não diferiu (P>0,05) do tratamento sem adição de plasma (4,3%), entretanto foi menor (P<0,05) se comparada à taxa de prenhez dos grupos-controle I inseminação via cervical superficial com sêmen fresco diluído (50,0%) e II inseminação via laparoscopia com sêmen descongelado (39,4%). A inseminação artificial por via cervical superficial com adição de plasma seminal ao sêmen descongelado não elevou o percentual de prenhez em valores que justifiquem a indicação desta biotecnologia em rebanhos comerciais de ovinos

From pomegranate marcs to a potential bioactive ingredient: a recycling proposal for pomegranate squeezing marcs

Pomegranate fruit is recognized as an important source of health compounds and its juicy arils represent the most commercially exploitable part of the fruit. Nevertheless, by-products coming from pomegranate juice processing represent both a challenging disposal problem and a promising source of health ingredients. In particular, the marcs obtained after juice squeezing are usually discarded or used for oil production in virtue of their lipophilic fraction, although the residues of pericarp and arils are proven to still be a good source of hydrophilic compounds such as polyphenols. Pulsed Ultrasound-Assisted Extraction, using just water as solvent, and spray drying microdispersion, using low methoxyl pectin as polymeric matrix, have been employed respectively to extract and formulate the water-soluble bioactive molecules from these by-products. From 100 g of pomegranate fresh marcs almost the same quantity of phenolic compounds found in 100 mL of the corresponding juice can be extracted with similar antioxidant activity, but with higher content in vitamin C and practically without total soluble solids. The extracts have been sprayed obtaining powders with an encapsulation efficiency of about 50%. The extracts, both before and after the microparticles production, have been characterized and their capacity in inhibition of platelets aggregation induced by thrombin has been tested ex-vivo on human platelets (% inhibition: about 60% and 30% before and after microencapsulation, respectively). Finally, fresh-cut apple wedges were enriched by vacuum impregnation with the formulated extracts, tentatively used as potential novel ingredients, obtaining \u201cpolyphenol-enriched\u201d apple