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RISS 인기검색어
- 검색키워드
- 저자 : Chenlong Yang (검색결과 2 건)
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Fei Li,Furong Chen,Peihu Gao,Wei Wang,Chenlong Yang,Shiyuan Liu 대한금속·재료학회 2023 METALS AND MATERIALS International Vol.29 No.10
With the development of welding technology, low heat input and high efficiency cold metal transfer welding have become the main methods of thin plate welding. However, low heat input easily forms columnar crystals, which will endanger the mechanical properties of joints. Therefore, ultrasonication treatment was applied to the cold metal transfer welding of 304 stainless steel to conduct cold metal transfer welding assisted with ultrasonication in this paper. The comparison between cold metal transfer welding assisted with ultrasonication and cold metal transfer showed that the weld grain diameter obtained by cold metal transfer welding assisted with ultrasonication was finer. In the welded joint, the maximum grain size diameter of the weld seam in cold metal transfer welding assisted with ultrasonication decreased to 375 μm, and the maximum tensile strength of cold metal transfer welding assisted with ultrasonication increased to 734 MPa. The texture intensity of the weld seam in cold metal transfer was significantly greater than that of the weld seam in cold metal transfer welding assisted with ultrasonication, which was ascribed to the improvement of the microstructure of the weld seam in cold metal transfer welding assisted with ultrasonication. In cold metal transfer welding assisted with ultrasonication, the flow performance of the welding pool increased, and the ultrasonic cavitation degree was intensified. This resulted in the significant refinement of the weld grain, the reduction of texture intensity, and an increase in the tensile strength.
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Chen, Long,Zhang, Wei-Na,Zhang, Sheng-Miao,Yang, Zhi-Hao,Zhang, Ping Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.24
Objective: To investigate bladder and intestinal function recovery and quality of sexual life after laparoscopic nerve-sparing radical hysterectomy (LNRH) for treatment of early invasive cervical carcinoma. Methods: Subjects included patients who underwent radical hysterectomy by laparotomy who were randomly assigned to 2 groups: 30 patients who underwent LNRH and 35 classical laparoscopic radical hysterectomy (LRH). We assessed the patients general clinical information, surgical characteristics, pathological findings, and adjuvant therapies. A urodynamic study was used to assess bladder function. Intestinal function recovery and quality of sexual life were evaluated by questionnaire. Results: No significant differences were found in age, surgery characteristics, pathological findings, adjuvant therapies, and main adverse effects between the 2 groups. The mean duration of the postoperative catheterization (DPC) in group LNRH was shorter than that in group LRH (P < 0.001). The maximum flow rate, maximum cystometric capacity, maximum detrusor pressure and urinary complications in group LNRH were better than those in group LRH. The quality of sexual life evaluated according to the female sexual function index (FSFI) was better in group LNRH than in those who underwent LRH. The intestinal function of patients in group LNRH also recovered better compared with patients in group LRH.
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