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박현종,김성준,박범식,박소미,성시일 한국품질경영학회 2024 품질경영학회지 Vol.52 No.1
Purpose: This study is to investigate the literature on accelerated tests based on the acceleration model and to provide a compilation of results on the parameters applied in the acceleration model and the test conditions. Methods: This research is conducts a literature review on accelerated tests using the acceleration model, with a focus on test targets, test conditions, and parameter values. The study is organizing the results of this literature review to facilitate their application in the design of reliability tests. Results: A literature review investigated a variety of test targets, test conditions, and parameter values. Conclusion: The results of the literature research conducted revealed various acceleration model parameter. Such literature research on accelerated tests can establish the foundation for reliability test design and contribute to future product development and quality improvement
세퍼드에서 ethylene glycol 독성에 관한 연구
박현종,이오형,임채웅,Park Hyun-Jong,Lee Oh-Hyung,Lim Chae Woong 한국동물위생학회 2005 韓國家畜衛生學會誌 Vol.28 No.1
Ethylene glycol (EG) intoxication in dogs can pose a diagnostic challenge. We investigated the effect of a lethal dose of EG to the Shepherd on blood, urine test, and histopathologic observation. Shepherds were treated orally with EG at $10\;m{\ell}/kg$ body weight. Clinically, EG caused the vomition, depression of central brain. Anion gap was increased, which was decreased pH of blood, The blood osmorality was increased at 3 hours, and BUN and creatinine was increased at 24 hour significantly. The pH of urine decreased. The crystal of calcium oxalate appeared at 6 hours. The amount of crystals increased at 12 and 24 hours. Microscopically, the degeneration of proximal tubules were shown at 1 hour and finally progressed as acute tubular nephrosis at 24 hours. These results suggest that the blood and urine test accompanied with histopathological examination be helpful to investigate the EG intoxication.
Could surgical management improve the IVF outcomes in infertile women with endometrioma?: a review
박현종,김한나,이근호,윤태기,이우식 대한산부인과학회 2019 Obstetrics & Gynecology Science Vol.62 No.1
Endometriosis is a chronic inflammatory condition that affects fertility and could be toxic to the ovary. Endometriomaper se and surgical interventions for endometrioma significantly reduce the ovarian reserve. Therefore, to preparefor surgical intervention for endometrioma, the high-risk group with decreased ovarian reserve must be considered. There is no evidence to support the use of surgical intervention before in vitro fertilization (IVF) to improve thereproductive outcomes of subsequent IVF in infertile women with advanced-stage endometriosis or endometrioma. As surgical treatment has few benefits, IVF could be recommended immediately for aiding conception in thesewomen. However, the reproductive prognosis of IVF may be worse in the more advanced stages of endometriosis. When dysmenorrhea is severe or when cancer is suspected, surgery prior to IVF may be necessary and justified. Whenthe size of the endometrioma is very large, surgery could be required prior to IVF to facilitate access to folliclesduring oocyte retrieval or to improve the ovarian response to controlled ovarian stimulation. Prolonged pituitarydownregulation in women with surgically diagnosed endometriosis may be helpful to increase the clinical pregnancyrate in subsequent IVF cycles. The purpose of this paper was to review the efficiency and clinical application of thesurgical intervention and IVF for infertile women with advanced-stage endometriosis or endometrioma.
실업 핸드볼 선수의 은퇴불안, 은퇴 후 삶의 기대, 스포츠 자신감 및 인지된 경기력 간의 관계
박현종,한진욱 한국체육학회 2022 한국체육학회지 Vol.61 No.2
The purpose of this study was to examine the relationship among retirement anxiety, expectation of life after retirement, sport confidence, and athletic performance of semi-professional handball player. In order to achieve the aim of this study, the entire players who registered in handball Korea league except foreign players responded to the survey questionnaire. A total of 189 data was utilized in the data analyses procedure. The results of the current study were as follows. Firstly, psychological status sub-dimensions of retirement anxiety had a positive relationship with sport confidence, however, decline in performance had a negatively effect sport confidence. Secondly, both injury and decline in performance had significant effects on perceived athletic performance. Thirdly, whereas the 'a new start' sub-dimension of expectations on post-career life positively affected sport confidence, 'take a break' sub-dimensions of expectations on post-career life negatively affected sport confidence. Fourthly, none of sub-dimension of expectation on post-career life had a significant impact on sport confidence. Fifthly, sport confidence was a significant predictor on perceived athletic performance. Discussions about study results and practical implications were also proposed.
박현종,최영미,정찬경,이산희,임가원,김상운,남은지,김영태 대한부인종양학회 2011 Journal of Gynecologic Oncology Vol.22 No.1
Objective: Small cell carcinoma of the uterine cervix (SMCC) is extremely rare, and an aggressive disease that proliferates rapidly. It was often reported that the diagnostic accuracy of cytologic smears in diagnosing SMCC was low. This is a report of the Severance Hospital experience with the patients suffering from SMCC. Methods: Twenty-seven patients with small cell carcinoma of the uterine cervix were diagnosed and treated at the Severance Hospital from November 1991 to January 2010. The data were analyzed retrospectively, based on the available charts and pathology reports. Various fields, such as chief complaints and symptoms present at first clinic visit, age, International Federation of Obstetrics and Gynecology (FIGO) clinical stage, treatment modality, the 5-year overall survival rate, and recurrence rate were investigated. Results: Among the 27 patients diagnosed with small cell carcinoma of the uterine cervix, 18 of them (66.7%) presented with symptoms, including vaginal bleeding, at the first clinic visit, and the remaining 9 patients (33.3%) showed abnormal Pap smear screening in the process of their routine health check-up. The median age of the patients was 54 years (range, 24 to 77 years). FIGO stage IIB was the most common stage (11 of 27 patients). The 5-year overall survival rate of 21 patients, who could be followed up, was 57.2%. Six patients showed recurrence after remission, and the mean disease free interval of them was 9.2 months (range, 6 to 11 months). Abnormal Pap smear screening results of 9 patients was investigated, and the diagnostic accuracy of the cytologic findings was 22.2%. Conclusion: Our study was consistent with the concept that Pap smear screening might not be helpful in early diagnosis of SMCC considering its low diagnostic accuracy. Further large-scale multicenter prospective studies are definitely needed in order to produce abundant information about optimal therapy and diagnosis.