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Man-in-Simulant Test(MIST) 실험을 위한 다양한 흡착제의 화학증기 흡착용 샘플러 제작
정현숙,이규원,최근섭,박명규,이해완,Jung, Hyunsook,Lee, Kyoo Won,Choi, Geun Seob,Park, Myungkyu,Lee, Haewan 한국군사과학기술학회 2014 한국군사과학기술학회지 Vol.17 No.1
We have developed a cost-effective and facile method to manufacture a pouch-type chemical vapor sampler. Originally, the sampler was developed by U. S. Army Natick Soldier Research, Development, and Engineering Center(NSRDEC) to determine the protective capability of individual protective ensembles or Man-in-Simulant Test (MIST). They used a selectively permeable high density polyethylene(HDPE) as front membrane and aluminum/ Nylon barrier film as an impermeable back sheet in order to mimic the actual adsorption process that occurs when the skin is exposed to chemical weapons. However, it costs over twenty dollars per sampler and the minimum of quantity is 2500 per order. In addition, it is inconvenient to employ a variety of adsorbents into the sampler, which could prevent MIST researchers to do various tests for development of MIST methodologies. Here, we report the simple method to manufacture the sampler in a laboratory scale. All the materials we used are easily obtainable and inexpensive. In addition, all the procedures we perform are generally known. We used methyl salicylate(MeS) vapor to be adsorbed into the sampler and employed several different adsorbents to evaluate the performance of samplers. The results obtained by home-made samplers and commercially avaliable one showed no significant differences. Also, MeS vapor was selectively adsorbed into the sampler depending on adsorbents. We conclude that home-made samplers are capable of collecting any kind of chemical vapor for a variety of purposes.
정병진,신동수,이규원.Byung Jin Jeong. M.D.. Dong Su Shin. M.D.. Kyoo Won Lee. M.D. 대한안과학회 2007 대한안과학회지 Vol.48 No.5
Purpose: To evaluate the effect of modified simple excision for epicanthal folds. Methods: Eight patients with the epicanthal folds were treated using a modified simple excision method from June to December 2005. After medial traction of the epicanthal fold to expose the medial canthus, parabola-shaped marking was done near mucocutaneous junction. Under local anesthesia, incision of skin, dissection of subcutaneous tissue and excision of subcutaneous fibrous tissue and orbicularis oculi muscle were done. After marking the medial canthus on the skin, a wedge-shaped excision of the extra skin was done. Fixation sutures to the medial canthal tendon and skin sutures were then performed. Results: Eight participants were evaluated (four males and four females) with a mean age of 16.71±8.34 years. The mean follow-up period was 42.86±5.80 days. After the operation, the skin scar was not visible due to its deep position, and no complication, such as damage to the lacrimal canaliculus or sac, was observed. Conclusions: Modified simple excision for epicanthal folds is an effective method that does not leave a visible scar.
이종욱,신동수,이규원,Jong Wook Lee,Dong Su Shin,Kyoo Won Lee 대한안과학회 2007 대한안과학회지 Vol.48 No.10
Purpose: To evaluate the clinical efficacy of a reverse eyelid splitting technique that we performed in cases of trichiasis or distichiasis combined with entropion. Methods: The study comprised 43 eyes of 31 patients with trichiasis or distichiasis combined with entropion treated from November 2004 to December 2005. After skin incision, the muscular layer and tarsus were reversely dissected to find abnormal follicles. The abnormal hair follicle was cauterized under the muscular layer, and 23 rotating sutures were done with Ethilon 6-0 to fix the tarsus and skin. Success was defined as having the meibomian gland located in front of the junction of skin and mucosa, without an abnormal hair protruding into the eye for at least three months. Results: Fifteen patients were male and sixteen patients were female. The mean age was 62.115.2 years. The patients were followed up for an average of 12.42.0 months after surgery. Surgery was successful in 74.4% (32 of the 43 eyelids) of the cases, and the recurrence rate was 25.6% (11 of the 43 eyelids). No severe complications occurred, such as infection, hemorrhage, wound dehiscence, or granuloma. However, foreign body sensation (1 eye) and eyelid notch (l eye) did occur. Conclusions: This reverse eyelid splitting technique produced satisfactory results in both cosmetic and functional aspects. Moreover, it resulted in a low recurrence rate and low complication rate in patients with trichiasis or distichiasis combined with entropion.