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In hot-dip galvanizing lines, undesirable vibration of
the moving steel strip occurs due to the impingement of the high-speed
turbulence jet, which leads to non-uniformity of zinc thickness, as well as
splash of the liquid zinc. In this paper, the turbulent jet flow field is
firstly numerically obtained using the CFD method. Then, the influence of the turbulent jet
flow on the steel strip is simplified as a harmonic force at the impingement line, and the response of the steel strip is obtained by means
of finite element analysis for different strip lengths, thickness and
pretension forces. Influences of impingement distance, air knife slot
gap and jet pressure, on vibration of the steel strip are also analyzed. The
results will provide theoretical basis for the reduction of steel strip
vibration in continuous hot-dip galvanizing process.
Objective: The authors report a rare case of uterine adenocarcinoma metastasis to both the skull base and cervical spine presenting with pathological fracture and myelopathy. Methods: We report the case of a 43-year-old Asian female with widely metastatic uterine adenocarcinoma who over the course of 3 years was diagnosed with a large clival mass and more recently a cervical spine pathological fracture presenting with myelopathy. Results: This patient underwent multiple procedures over a three-year period, including total hysterectomy with tumor debulking, endonasal biopsy of clival mass and most recently cervical corpectomy and fusion. She has received chemotherapy and radiation therapy for treatment of the unresectable clival mass and has done quite well despite having this pathology. Conclusion: This is the first documented case of clival involvement of endometrial adenocarcinoma. Additionally, this is a unique case of spinal metastatic endometrial adenocarcinoma presenting with pathological fracture and myelopathy.
Objective and Importance: The authors report a case of a symptomatic giant serpentine MCA aneurysm treated with double STA-MCA bypass with thrombectomy and excision of aneurysm. This is the first reported case of a double bypass with concomitant thrombectomy and excision of aneurysmal segment. Clinical Presentation/Methods: We report the case of a 27-year-old Hispanic male with severe acute decline in mental status with a giant serpentine MCA aneurysm with significant mass effect and midline shift trapping the lateral ventricular system. Intervention/Results: Patient presented initially to an outside hospital for altered mental status and confusion. Patient was diagnosed with a giant serpiginous aneurysm and hydrocephalus. A left ventriculoperitoneal shunt was placed at the outside hospital and patient was transferred to University of New Mexico. At this time, his mental status declined rather abruptly. He was treated with a double STA-MCA bypass procedure with aneurysm resection.