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Adenomatous polyps, a common premalignant lesion, are often classified into villous adenoma (VA) and tubular adenoma (TA). VA has a higher risk of malignancy, whereas TA typically grows slowly and has a lower likelihood of cancerous transformation. Accurate classification is essential for tailored treatment. In this study, we develop a deep learning-based approach for the localization and classification of adenomatous polyps using endoscopic images. Specifically, a pre-trained EGE-UNet is first adopted to extract regions of interest from original images. Multi-level feature maps are then extracted by the feature extraction pipeline (FEP). The deep-level features are fed into the Pyramid Pooling Module (PPM) to capture global contextual information, and the squeeze body edge (SBE) module is then used to decouple the body and edge parts of features, enabling separate analysis of their distinct characteristics. The Group Aggregation Bridge (GAB) and Boundary Enhancement Module (BEM) are then applied to enhance the body features and edge features, respectively, emphasizing their structural and morphological characteristics. By combining the features of the body and edge parts, the final output can be obtained. Experiments show the proposed method achieved promising results on two private datasets. For adenoma vs. non-adenoma classification, It achieved a mIoU of 91.41%, mPA of 96.33%, mHD of 11.63, and mASD of 2.33. For adenoma subclassification (non-adenomas vs. villous adenomas vs. tubular adenomas), it achieved a mIoU of 91.21%, mPA of 94.83%, mHD of 13.75, and mASD of 2.56. These results demonstrate the potential of our approach for precise adenomatous polyp classification.
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ABSTRACT Introduction: The speed and quality of functional recovery after knee cruciate ligament reconstruction directly affect the training effect and competition results of athletes. Objective: To evaluate the effect of early systematic rehabilitation after reconstruction of ligament tears in outdoor sports athletes. Methods: In this study, Liu Mou, an outstanding player of the national men's rugby team, was selected as the experimental object. A rehabilitation training program was adopted, and rehabilitation began from 2 to 5 weeks after reconstruction. Results: After the recovery of the first stage for 4 weeks, the knee extension Angle of the injured limb in Liu's sitting position reached 180 degrees. In the second stage of rehabilitation physical training, the body composition test showed that body fat decreased from 20.8% before rehabilitation to 16.3%. At the end of the third stage of physical training, he could complete the high flip. Conclusions: Through different stages of postoperative rehabilitation physical training, Liu's physical condition fully recovered to a higher level. He could then participate in normal football training and return to the game, indicating that Liu's rehabilitation training after anterior cruciate ligament reconstruction is effective. Level of evidence II; Therapeutic studies - investigation of treatment results.
RESUMO Introdução: A velocidade e qualidade da recuperação funcional após a reconstrução de ligamentos cruzados do joelho diretamente afetam o efeito do treinamento e resultados de competição de atletas. Objetivo: Avaliar o efeito da reabilitação sistemática precoce após a reconstrução de rupturas dos ligamentos em atletas de esportes ao ar livre. Métodos: Neste estudo, Liu Mou, um excepcional jogador do time masculino nacional de rúgbi, foi escolhido como objeto do experimento. Um programa de treino de reabilitação foi adotado e a reabilitação começou de 2 a 5 semanas após a reconstrução. Resultados: Após a recuperação da primeira fase por 4 semanas, o ângulo de extensão do joelho do membro lesado na posição sentada alcançou 180 graus. Na segunda fase de reabilitação por treino físico, o teste de composição corporal mostrou que a gordura corporal havia diminuído de 20,8% antes da reabilitação para 16,3%. Ao final da terceira fase de treino físico, Liu pode completar um high flip. Conclusões: Através das diferentes fases de treinamento físico de reabilitação pós-operatório, a condição física de Liu foi completamente recuperada a um nível elevado. Ele pode então participar de treinos normais no rúgbi e voltar a jogar, o que indica que o treino de reabilitação de Liu após a reconstrução ligamentar cruzada foi eficaz. Nível de evidência II; Estudos terapêuticos - investigação de resultados de tratamento.
Resumen Introducción: La velocidad y calidad de la recuperación funcional tras la reconstrucción de ligamentos cruzados de la rodilla derecha afectan el efecto del entrenamiento y resultados de competición de atletas. Objetivo: Evaluar el efecto de la rehabilitación sistemática temprana tras la reconstrucción de roturas de los ligamentos en atletas de deportes al aire libre. Métodos: En este estudio, Liu Mou, un excepcional jugador del equipo masculino nacional de rugby, fue elegido como objeto del experimento. Un programa de entrenamiento de rehabilitación se adoptó y la rehabilitación empezó de 2 a 5 semanas tras la reconstrucción. Resultados: Tras la recuperación de la primera fase por 4 semanas, el ángulo de extensión de la rodilla del miembro lesionado en la posición sentada alcanzó 180 grados. En la segunda fase de rehabilitación por entrenamiento físico, el test de composición corporal mostró que la grasa corporal había disminuido de 20,8% antes de la rehabilitación para 16,3%. Al fin de la tercera fase de entrenamiento físico, Liu ha podido completar un high flip. Conclusiones: Por medio de las diferentes fases de entrenamiento físico de rehabilitación postoperatorio, la condición física de Liu fue completamente recuperada a un nivel elevado. Él pudo, entonces, participar de entrenamientos normales en el rugby y volver a jugar, lo que indica que el entrenamiento de rehabilitación de Liu tras la reconstrucción del ligamento cruzado fue eficaz. Nivel de evidencia II; Estudios terapéuticos - investigación de resultados de tratamiento.
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As a type of flexible impermeable material, a PVC geomembrane must be cooperatively used with cushion materials. The contact interface between a PVC geomembrane and cushion easily loses stability. In this present paper, we analyzed the shear models and parameters of the interface to study the stability. Two different cushion materials were used: the common extrusion sidewall and non-fines concrete. To simulate real working conditions, flexible silicone cushions were added under the loading plates to simulate hydraulic pressure loading, and the loading effect of flexible silicone cushions was demonstrated by measuring the actual contact areas under different normal pressures between the geomembrane and cushion using the thin-film pressure sensor. According to elastomer shear stress, there are two main types of shear stress between the PVC geomembrane and the cushion: viscous shear stress and hysteresis shear stress. The viscous shear stress between the geomembrane and the cement grout was measured using a dry, smooth concrete sample, then the precise formula parameters of the viscous shear stress and viscous friction coefficient were obtained. The hysteresis shear stress between the geomembrane and the cushion was calculated by subtracting the viscous shear stress from the total shear stress. The formula parameters of the hysteresis shear stress and hysteresis friction coefficient were calculated. The three-dimensional box-counting dimensions of the cushion surface were calculated, and the formula parameters of the hysteresis friction were positively correlated with the three-dimensional box dimensions.
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Resistencia al Corte , Simulación por Computador , Diseño de Equipo , Tamaño de la Partícula , Cloruro de Polivinilo/química , Presión , Siliconas/química , Propiedades de Superficie , ViscosidadRESUMEN
The impact of damaged sidewalls at the joints between tubes on dam structures subjected to horizontal seepage is investigated. First, an experimental scheme is designed to test the mode and critical gradient of seepage failure of the soil in the damaged tubes. The effects of various overburden pressures (0, 5, 10, 20, and 30 kPa), hole radii(0.5, 1.0, 1.5, and 2 cm) and soil specimen properties were studied. The test phenomena and the changes in the pore water pressure were used to determine the seepage failure modes and the critical gradients under different conditions. Combined with the modified Terzaghi soil arching theory, a mathematical model was developed for the critical gradient for soil seepage failure. The model fitting curve was in good agreement with the laboratory test results. The critical gradient is independent of the overburden pressure and weakly dependent on the internal friction angle of the soil. The critical gradient increases with the cohesion. For fixed characteristic soil parameters, the critical gradient decreases at a gradually decreasing rate as the radius of the damaged hole increases.