Morbidity and mortality is high in patients with gunshot wounds to the chest. Only in rare cases do foreign bodies persist in the thorax without significant pathology. At this study, we present a case in which steel shot was removed through the mediastinum using mediastinoscopy due to the risk of tracheal fistula.
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http://dx.doi.org/10.5505/tjtes.2013.85453 | DOI Listing |
PLoS One
December 2024
School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou, China.
The microstructure, hardness, residual stress, and friction and wear properties of 25CrNi2MoV steel with different particle diameters during shot peening strengthening were studied. Studies have shown that a grain refinement layer appeared on the surface of the material after shot peening. The shot peening intensity increased with increasing particle diameter; a greater shot peening intensity corresponded to a greater surface hardness of the material, the maximum hardness was 592 HV0.
View Article and Find Full Text PDFMaterials (Basel)
December 2024
Mechanical Engineering Department, Universidad Carlos III de Madrid, 28911 Leganés, Spain.
Due to increasing mobility and energy conservation needs, improving bus and coach safety without adding weight is essential. Many crashes with fatal outcomes for vehicle occupants are associated with the rollover of the vehicle, revealing the structural weakness of the steel pillars between windows, which must resist high levels of bending during rollovers. This study aims to reinforce these pillars with expired carbon fiber prepreg from the aircraft industry, improving safety and reducing environmental waste.
View Article and Find Full Text PDFRadiol Phys Technol
November 2024
Department of Radiology and Nuclear Medicine, Fukushima Medical University School of Medicine, 1 Hikariga-Oka, Fukushima City, Fukushima, 960-1295, Japan.
Despite the importance of T-weighted image in clinical practice, artifacts can significantly degrade image quality and affect diagnosis. This study quantitatively analyzed uterine displacement and surveyed the relationship between the image quality of fast-spin-echo-T-weighted image of the female pelvis and quantitative value of uterine displacement. Overall, 147 women (mean age, 46.
View Article and Find Full Text PDFSci Rep
October 2024
Advanced Industrial Technology Research Institute, Nanjing Institute of Technology, Nanjing, China.
Quality control processes with automation ensure that customers receive defect-free products that meet their needs. However, the performance of real-world surface defect detection is often severely hindered by the scarcity of data. Recently, few-shot learning has been widely proposed as a solution to the data sufficiency problem by leveraging a limited number of base class samples.
View Article and Find Full Text PDFNanoscale
November 2024
School of Industrial Engineering, Purdue University, West Lafayette, IN 47906, USA.
Surface nanoengineering can significantly improve the mechanical properties and performance of metals, such as strength, hardness, fatigue, wear resistance, . In this work, we tailored the surface microstructure of GCr15 bearing steel within a thickness of approximately 800 μm using room temperature ultrasonic shot peening (USP) technology. Microstructure characterization studies reveal the formation of gradient nanosized spheroidal carbides and lath-shaped nano-martensite in the GCr15 bearing steel during the USP process.
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