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한심희,김찬수,장석성,이현주,탁우식 한국농림기상학회 2004 한국농림기상학회지 Vol.6 No.3
This study was conducted to examine the changes in the seed physical characters and germinative properties of three tree species at three different storage times in order to determine the most suitable storage time and condition. Seed physical characters and germinative properties were examined from seeds of Fraxinus rhynchophylla, Zanthoxylum schinifolium and Staphylea bumalda that were stored at -18C for 1, 3 and 10 years, and the growth performance and physiological characters of their seedlings were analyzed. Seed physical characters and germinative properties showed significant differences between three storage times as well as three tree species. Seed moisture content of F. rhynchophylla and S. bumalda and seed fresh weight of Z. schinifolium decreased with increase of storage time. Storage time represented negative correlation with moisture content and fresh weight (r = -0.822, p < 0.01). Seed percent germination of Z. schinifolium and S. bumalda stored for 3 and 10 years decreased less than 15% and 10.7% respectively. Mean germination times for seed of F. rhynchophylla, Z. schinifolium and S. bumalda were delayed 11.9, 5.7 and 9.7 days after a storage time of 10 years, respectively. However the growth and viability of seedlings didn't show a special pattern for storage time and tree species.
Rapid Micropropagation by Axillary Buds Cultures of Smilax china
Hyun-Jin Song,Seon-Jeong Sim,Mi-Jin Jeong,Chang-Mi Heo,Hak-Gon Kim,Gwon-Yong Jeong,Su-Yeoung Heo,Yong-Weon Choi,Geun-Hye Park,Jae-Kyung Yang,Hyun-Shik Moon,Myung-Suk Choi 경상대학교 농업생명과학연구원 2010 농업생명과학연구 Vol.44 No.6
An efficient method for the rapid propagation of Smilax china from axillary buds was established. Plants with thick leafage were selected from Korea native S. china population. Axillary buds of S. china collected from selected plant and were cultured in various culture media (2MS, MS, 1/2MS, WPM, B5 and SH medium). Shoot was induced from axillary bud on MS basal medium after 4 weeks of culture. 1/2MS medium showed a higher growth rate than those of the others, while the lowest shoot growth was obtained in 2MS medium. Among the sucrose concentrations, 5% sucrose was the optimum level for shoots growth from axillay buds. Among cytokinins, 0.5 mg L -1 6-benzylaminopurine (BAP) treatment showed the best performance on shoot multiplication, yielding average shoot multiplication forming about 2.4. Rooting was induced directly near the base of the shoot on 1/2MS medium containing with three-auxins α-napthalene acetic acid (NAA), indole acetic acid (IAA) and β-indolebutyric acid (IBA) (0.5 and 1.0 mg L -1 ). The 1.0 mg L -1 IBA treatments induced earliest rooting with maximum of root number and root growth. These rooted plantlets were successfully transferred to pots for 4 weeks hardening process, and were transferred to soil with above 90% survival rate.
대학병원 간호사에서 일의 의미, 직무배태성, 직장 내 괴롭힘이 이직의도에 미치는 영향
심영숙(Sim, Young Suk),심귀숙(Shim, Gui Sook),심봉희(Sim, Bong Hi),성주현(Sung, Joo Hyun) 한국간호행정학회 2021 간호행정학회지 Vol.27 No.4
Purpose: The purpose of this study was to explore the effect of meaning of work, job embeddedness, and workplace bullying on turnover intention in university hospital nurses. Methods: Data were collected from 126 nurses in a university hospital with more than 500 beds in C-city. Data analysis was performed using multiple linear regression with the SPSS 25.0 program. Results: Significant factors influencing the turnover intention of hospital nurses were meaning of work, job embeddedness and workplace bullying. Conclusion: Negative significant factors influencing the turnover intention of university hospital nurses were meaning of work and job embeddedness. Workplace bullying was the only positive significant factor influencing turnover intention of university hospital nurses. In order to reduce turnover intention, it is necessary to find an alternative that strengthens the meaning of work and job embeddedness and prevents the workplace bullying.
심현석(Hyun-Suk Sim),황원준(Won-Jun Hwang),이우송(Woo-Song Lee) 한국산업융합학회 2015 한국산업융합학회 논문집 Vol.18 No.1
For high-accuracy position control of a linear motor, it has been proposed a nonlinear controller including a synchronization algorithm. Linear motors are easily affected by force ripple, friction, and parameter variations because there is no mechanical transmission to reduce the effects of model uncertainties and external disturbances. Synchronization error is also caused by skew motion, model uncertainties, and force disturbance on each axis. Nonlinear effects such as friction and ripple force are estimated and compensated for. The synchronization algorithm is used to reduce the synchronous error of the two side pillars. The performance of the controller is evaluated by computer simulations.
스마트카메라를 이용한 생산공정의 검사자동화를 위한 패턴인식기술에 관한 연구
심현석(Hyun-Suk Sim),신행봉(Heang-Bong Shin),강언욱(Un-Wook Kang) 한국산업융합학회 2015 한국산업융합학회 논문집 Vol.18 No.4
The purpose of this research is to develop the pattern recognition algorithm based on smart camera for inspection automation, and including external surface state of molding parts or optical parts. By performance verification, this development can be applied to establish for existing reflex data because inputting surface badness degree of scratch"s standard specification condition directly. And it is pdssible to distinguish from schedule error of badness product and normalcy product within schedule extent after calculating the error comparing actuality measurement reflex data and standard reflex data mutually. The proposed technology cab be applied to test for masearing of the smallest 10 pixel unit. It is illustrated the relibility pf proposed technology by an experiment.
흉쇄유돌근에서 기인한 Low-Grade Myofibroblastic Sarcoma 1예
심남석(Nam Suk Sim),홍현준(Hyun Jun Hong),송기재(Kee-Jae Song),최성은(Sung-eun Choi),서연석(Yun Suk Suh),이은정(Eun Jung Lee) 대한두경부종양학회 2014 대한두경부 종양학회지 Vol.30 No.1
Low-grade myofibroblastic sarcoma is a rare disorder of malignant soft tissue tumor and is usually occurred various regions that often manifests in the head and neck region. The most common clinical presentation of this entity is non-tender cervical lymphadenopathy. This disease usually presents high possibility of local recurrence and low possibility of distant metastasis. We report a rare case of low-grade myofibroblastic sarcoma occurring in the sternocleidomastoid muscle and invading to the mastoid tip. A 56-year-old male visited the clinic with a complaint of slowly growing postauricular mass for 6 months. Mass originating from sternomastoid muscle and invasion to mastoid tip was observed by imaging studies. Surgical complete excision with simple mastoidectomy was performed via modified facelift approach. The histopathologic findings revealed malignant spindle cell tumor with positive staining with smooth muscle actin. The patient has no recurrence for 2years without any complication.
심영보,임재현,한연석,이우진,이준성,백현욱,전영빈,이정환,김유선,우광훈,문정섭 인제대학교 백병원 2001 仁濟醫學 Vol.22 No.2
Mesenteric venous thrombosis is an rare type of intestinal ischemia associated with significant mortality and morbidity because of its delay in diagnosis. Mesenteric vasculitis associated with allergic vasculitis can also produce an acute intestinal ischemia. We recently experienced a case of mesenteric venous thrombosis associated with allergic vasculitis, successfully treated with segmental bowel resection and anticoagulant therapy, we report this case with a brief review of the literatures. A 30-year-old man was admitted to our hospital because of severe abdominal pain and hematochezia. Abdominal CT scan showed superior mesenteric venous thrombosis extending into main portal vein. There were large amounts of ascites and the wall of the jejunum was markedly thickened. On the 5th hospital day, his abdomen was tense and diffusely tender: bowel sounds were absent. Exploratory laparotomy was performed under the impression of intestinal infarction. At laparotomy thrombosis of the mesenteric vein and gangrene of the jejunum were found. A small bowel resection with an end-to-end anastomosis was done. Histopathological examination confirmed venous bowel gangrene and showed leukocytoclastic vasculitis, the hallmark of allergic vasculitis. The patient recovered fully and was discharged on anticoagulant therapy. At follow-up after 6 months, the patient was well with no gastrointestinal symptoms.