Prediction of fluids volume fraction and barium sulfate scale in a multiphase system using gamma radiation and deep neural network.

In the oil industry, during the production of oil and gas, barium sulfate (BaSO4) scale may occur on the inner walls of the pipelines leading to the reduction of the internal diameter, making the fluids' passage difficult and complicating the calculation of the fluids volume fraction. This paper presents a methodology to predict volume fraction of fluids and BaSO4 scale thickness from obtaining spectra of two NaI(Tl) detectors that record the transmitted and scattered beams of gamma-rays. Theoretical models for a multiphase annular flow regime (gas-saltwater-oil-scale) were developed using MCNP6 code, which is a mathematical code based on the Monte Carlo method. The simulated data was used to train a deep neural network (DNN) to predict the volume fraction of gas, saltwater and oil, and the concentric scale thickness. A Python optimization library called Optuna was used for the hyperparameters search to design the DNN architecture. The methodology presented great results, especially for scale thickness prediction. Although the results for saltwater did not reach the same level, it was still possible to predict approximately 70% of the patterns up to 10% relative error. This achievement indicates the possibility to calculate the volume fraction of fluids and the concentric scale thickness in the offshore oil industry using gamma densitometry and deep learning models.

Efeito da fisioterapia nos sintomas de síndrome da bexiga hiperativa decorrente do tratamento do câncer de colo de útero / Effect of physical therapy on symptoms of the hyperactive bladder arising from the treatment of cervical cancer

Introdução: A síndrome da bexiga hiperativa pode afetar as mulheres após o tratamento para câncer de colo do útero, interferindo diretamente a qualidade de vida e funcionalidade. Objetivo: Verificar os efeitos da Fisioterapia nos sintomas da síndrome da bexiga hiperativa em mulheres submetidas ao tratamento de câncer de colo do útero. Métodos: Trata-se de um ensaio clínico não controlado, com mulheres que realizaram o tratamento para câncer de colo do útero. Foi utilizada uma ficha de avaliação para verificar dados ginecológicos/obstétricos, assim como hábitos de vida das pacientes. Os sintomas da síndrome da bexiga hiperativa foram avaliados por meio do Incontinence Questionnaire Overactive Bladder. Para a intervenção fisioterapêutica foi utilizado o protocolo de Treinamento dos Músculos do Assoalho, Eletroestimulação Transcutânea do Nervo Tibial e Terapia Comportamental. Resultados: No pós-tratamento ocorreu decréscimo estatisticamente significativo na mediana dos sintomas da síndrome da bexiga hiperativa e no impacto da qualidade de vida em relação ao pré-tratamento, indicando melhora do quadro. Conclusão: Esta pesquisa concluiu que o protocolo fisioterapêutico utilizado apresentou eficácia na melhora dos sintomas da síndrome da bexiga hiperativa após tratamento para câncer de colo do útero. (AU)

Introduction: A hyperactive bladder syndrome can affect women after treatment for cervical cancer, directly interfering with quality of life and functionality. Objective: To verify the effects of physical therapy on the symptoms of hyperactive bladder syndrome in women undergoing treatment for cervical cancer. Methods: This is an uncontrolled clinical trial, with women who underwent treatment for cervical cancer. An evaluation form was used to check gynecological/obstetric data, as well as the patients' lifestyle. The symptoms of the hyperactive bladder syndrome were obtained through the hyperactive bladder questionnaire. For the physiotherapeutic intervention, the floor muscle training, transcutaneous electrostimulation of the tibial nerve and behavioral therapy protocol was used. Results: In the post-treatment there was a statistically significant decrease in the median of the symptoms of the hyperactive bladder syndrome and no impact on the quality of life in relation to the pre-treatment, an improvement indicated in the condition. Conclusion: This research concluded that the physical therapy protocol used showed improvement of symptoms of overactive bladder syndrome after treatment for cervical cancer. (AU)

Rastreamento de déficit cognitivo em idosos participantes da Campanha de Prevenção ao Câncer de Pele / Cognitive Impairment screening in elderly patients during a Skin Cancer Prevention Campaign

Introdução e objetivo: a Campanha Nacional de Prevenção ao Câncer de Pele, promovida pela SBD, é um evento anual de conscientização da população sobre diagnóstico precoce e prevenção dessa doença. Considerando o perfil dos participantes, em grande parte idosos, e seu caráter educativo, é válido identificar a proporção de pessoas com possível prejuízo cognitivo, de modo a aprimorar as informações transmitidas. Métodos: neste estudo, realizamos triagem cognitiva em participantes da Campanha de 2018 usando escore 10-point cognitive screener, incluindo indivíduos ≥ 60 anos. Foram excluídos pacientes com dificuldades comunicativas e não anuentes. Resultados: foram entrevistados 66 participantes com idade mediana de 68 anos (p25-p75:63-73), sendo 42 (64%) do sexo feminino. Desses, 24 (36%) possuíam ensino fundamental incompleto e 13 (20%) apresentavam doença neurológica ou psiquiátrica. O escore cognitivo 10-CS bruto e corrigido pela escolaridade apresentou mediana de 8 (6-9). Apresentavam escores ajustados menores que oito 25 entrevistados (38%), indicando déficit cognitivo possível, e seis (9%) apresentaram déficit cognitivo provável. Tal prejuízo cognitivo associou-se a antecedentes neurológicos e baixa escolaridade. Conclusões: apesar de abranger todas as idades, a Campanha prioriza populações de risco, incluindo idosos. Assim, as informações e a didática dessas campanhas devem adequar-se ao perfil dos ouvintes

Introduction and objective: The Campanha Nacional de Prevenção ao Câncer de Pele (National Skin Cancer Prevention Campaign), promoted by SBD, is an annual event to inform about the early diagnosis and prevention of skin cancer. Considering the participants' profile, composed mostly of older adults, and the campaign educational goals, it's opportune to identify the proportion of people with cognitive impairment to improve communication. Methods: We perform a cognitive screening of 2018 Campaign participants using a "10-point cognitive screener" score. The participants included were ≥ 60 years. We excluded those who were unable to communicate or denied consenting. Results: The study interviewed 66 participants. The median age was 68 years (p25-p75:63-73), and 42 (64%) were women. Twenty-four participants (36%) had some elementary school, and 13 (20%) had a neurological or psychiatric disease. The crude and adjusted by schooling 10-CS scores had a median of 8 (6-9). Twenty-five of the interviewed patients (38%) had adjusted score below eight, indicating cognitive impairment, and six (9%) had a probable impairment. The cognitive deficit was associated with a history of neurological disease and low schooling. Conclusions: Despite covering all ages, the campaign prioritizes the risk population, including older adults. Therefore, campaign volunteers should adapt the communication to participants' profile