The sour gas sweetening is one of the main processes in gas industries. Gas sweetening is done through chemical processes. Therefore, it requires high cost and energy. The results show that increasing the operating te...The sour gas sweetening is one of the main processes in gas industries. Gas sweetening is done through chemical processes. Therefore, it requires high cost and energy. The results show that increasing the operating temperature increases the mass transfer coefficient and increases the mass transfer rate. Theoretical and experimental data show that sulfur removal in 4.5 W magnetic field is desirable. The increase in sulfur removal percentage in the magnetic field of 4.5 W and 6.75 W is about 16.4% and 15.2%, respectively. According to the obtained results, the effect of temperature increase from 18.8°C to 23.4°C is more evident than the effect of temperature change from 23.4°C to 32.2°C. Because more thermal energy is needed to provide higher temperatures. Therefore, the temperature of 23.4°C is reported as the optimal temperature. The results of this research show that the percentage of sulfur removal is also high at this temperature.展开更多
Using an inviscid model with inlet total pressure gradient and a J. D. Denton scheme, this paper for the first time numerically solves the 3D flow field of compressor casing treatment, and also explores some boundary ...Using an inviscid model with inlet total pressure gradient and a J. D. Denton scheme, this paper for the first time numerically solves the 3D flow field of compressor casing treatment, and also explores some boundary singularities and numerical stability. Agreement is attained in qualitative explanations of some, casing treatment test results and its mechanism.展开更多
Objective To investigate the effective treatment of abscesses in thalanmus. Methods 3 patients with solitary abscess in thalamus are analyzed retrospectively, who were treated from Sep. 2009 to Jul. 2010. There were o...Objective To investigate the effective treatment of abscesses in thalanmus. Methods 3 patients with solitary abscess in thalamus are analyzed retrospectively, who were treated from Sep. 2009 to Jul. 2010. There were one male and two female patients. One patient treated with stereotactic展开更多
In this paper, mathematical models and FEA formulation for implementing heat treatment process simulation were given out. The various coupling effects were treated. The object-oriented methodology of developing heat t...In this paper, mathematical models and FEA formulation for implementing heat treatment process simulation were given out. The various coupling effects were treated. The object-oriented methodology of developing heat treatment simulation was explored. The framework of simulating programs was outlined. The main C++ classes were developed, some important member functions were implemented. The present research work shows that using object-oriented method can greatly reduce the amount of coding. The programs are clear in conception, easy to test, modify and expand. By using the methodology introduced in this paper, one heat treatment process three dimensional simulation tool was developed.展开更多
随着列车智能化程度的不断提高,许多研究探索了车载设备目标检测模型的轻量化技术,以满足在资源有限情况下的高效计算。针对当前YOLO(You Only Look Once)系列目标检测模型轻量化方法通用性不够强的问题,文章提出了一种针对YOLO系列的...随着列车智能化程度的不断提高,许多研究探索了车载设备目标检测模型的轻量化技术,以满足在资源有限情况下的高效计算。针对当前YOLO(You Only Look Once)系列目标检测模型轻量化方法通用性不够强的问题,文章提出了一种针对YOLO系列的低秩分解参数压缩算法。首先通过预设的低秩比例系数和卷积单元的输入/输出通道数量计算低秩,然后通过对目标结构的卷积层进行Tucker分解,得到新的卷积序列,最后融合新的卷积序列,取代原有卷积层。使用公开数据集对所提出的基于低秩分解的参数压缩方法进行试验,选用了YOLOv5-l、YOLOv8-x和YOLOX-x这3种模型,在保证低秩分解后的模型检测平均精度为原模型96%的前提下,模型参数量和浮点计算量均减少了约40%,同时图像检测速度能达到原模型的150%左右。此外,可视化结果显示,该方法压缩过的模型与原模型在相同图像上的关注区域基本相同。试验结果表明,文章提出的方法可以有效地对单阶段YOLO系列目标检测模型进行轻量化压缩,提高模型在车载设备上的可用性;同时,所做工作对轨道交通领域自动驾驶场景下的其他模型的轻量化处理也具有重要的借鉴意义。展开更多
文摘The sour gas sweetening is one of the main processes in gas industries. Gas sweetening is done through chemical processes. Therefore, it requires high cost and energy. The results show that increasing the operating temperature increases the mass transfer coefficient and increases the mass transfer rate. Theoretical and experimental data show that sulfur removal in 4.5 W magnetic field is desirable. The increase in sulfur removal percentage in the magnetic field of 4.5 W and 6.75 W is about 16.4% and 15.2%, respectively. According to the obtained results, the effect of temperature increase from 18.8°C to 23.4°C is more evident than the effect of temperature change from 23.4°C to 32.2°C. Because more thermal energy is needed to provide higher temperatures. Therefore, the temperature of 23.4°C is reported as the optimal temperature. The results of this research show that the percentage of sulfur removal is also high at this temperature.
文摘Using an inviscid model with inlet total pressure gradient and a J. D. Denton scheme, this paper for the first time numerically solves the 3D flow field of compressor casing treatment, and also explores some boundary singularities and numerical stability. Agreement is attained in qualitative explanations of some, casing treatment test results and its mechanism.
文摘Objective To investigate the effective treatment of abscesses in thalanmus. Methods 3 patients with solitary abscess in thalamus are analyzed retrospectively, who were treated from Sep. 2009 to Jul. 2010. There were one male and two female patients. One patient treated with stereotactic
文摘In this paper, mathematical models and FEA formulation for implementing heat treatment process simulation were given out. The various coupling effects were treated. The object-oriented methodology of developing heat treatment simulation was explored. The framework of simulating programs was outlined. The main C++ classes were developed, some important member functions were implemented. The present research work shows that using object-oriented method can greatly reduce the amount of coding. The programs are clear in conception, easy to test, modify and expand. By using the methodology introduced in this paper, one heat treatment process three dimensional simulation tool was developed.
文摘随着列车智能化程度的不断提高,许多研究探索了车载设备目标检测模型的轻量化技术,以满足在资源有限情况下的高效计算。针对当前YOLO(You Only Look Once)系列目标检测模型轻量化方法通用性不够强的问题,文章提出了一种针对YOLO系列的低秩分解参数压缩算法。首先通过预设的低秩比例系数和卷积单元的输入/输出通道数量计算低秩,然后通过对目标结构的卷积层进行Tucker分解,得到新的卷积序列,最后融合新的卷积序列,取代原有卷积层。使用公开数据集对所提出的基于低秩分解的参数压缩方法进行试验,选用了YOLOv5-l、YOLOv8-x和YOLOX-x这3种模型,在保证低秩分解后的模型检测平均精度为原模型96%的前提下,模型参数量和浮点计算量均减少了约40%,同时图像检测速度能达到原模型的150%左右。此外,可视化结果显示,该方法压缩过的模型与原模型在相同图像上的关注区域基本相同。试验结果表明,文章提出的方法可以有效地对单阶段YOLO系列目标检测模型进行轻量化压缩,提高模型在车载设备上的可用性;同时,所做工作对轨道交通领域自动驾驶场景下的其他模型的轻量化处理也具有重要的借鉴意义。
