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월악산국립공원의 부착규조 분포와 유기오탁지수 (DAIpo)에 의한 수질평가
박정원(Jung-Won Park) 국립공원연구원 2010 국립공원연구지 Vol.1 No.2
본 연구는 2006년에 월악산국립공원 내에 부착규조류 분포와 유기오탁지수에 의한 수질 평가이다. 동정된 부착규조류는 138종류였고, 우점종은 Achnanthes sp. Achnanthes alteragracillima, Achnanthes convergens, Achnanthes minutissima, Cocconeis placentula var. lineata, Cymbella affinis, Cymbella silesiaca, Gomphonema minutum, Reimeria sinuata 등이었다. DAIpo 값은 62.3에서 99.9의 범위로, 매우 좋음에서 좋음으로 평가되었다. To investigated the epilithic diatoms community and an assesment of water quality by DAIpo(diatom assemblage index of organic water pollution), the samplings were collected from fourteen sampling stations on April, May, August, September and October 2006 in Woraksan National Park. The total 138 taxa were identified from this study and dominant species were Achnanthes sp. Achnanthes alteragracillima, Achnanthes convergens, Achnanthes minutissima, Cocconeis placentula var. lineata, Cymbella affinis, Cymbella silesiaca, Gomphonema minutum, Reimeria sinuata. The variations of DAIpo values was ranged from 62.3 to 99.9 and the water quality was estimated between very good and good.
지상라이다를 이용한 미기록 외래종 갯쥐꼬리풀(Spartina Alterniflora)의 분포특성과 관리방안 연구 -다도해 해상국립공원 진도 남동리 해안을 사례로-
박정원 ( Jung Won Park ),김하송 ( Ha Song Kim ),장성건 ( Seong Geon Jang ),천숙진 ( Sook Jin Chun ),육관수 ( Kwan Soo Yuk ) 한국도서(섬)학회 2015 韓國島嶼硏究 Vol.27 No.3
Spartina alterniflora is native to the Atlantic coast from Newfoundland, the south of Canada and northern Argentina. There it forms a dominant part of brackish coastal saltmarshes. Due to its strong growth, the Spartina alternifolra was introduced to the rider area and coast as a use for ecological engineering. The Spartina alterniflora community can crowd out native species, reduce the biodiversity of saltmarsh and alter the environment. As a result, the invertebrates living in mud flats disappeared due to the encroaching of Spartina alterniflora, and the birds which eat off invertebrates went along as well. The Spartina alterniflora was first introduced in South Korea in 2008 and is known to have flowed in the Dadohaehaesang National Park. Compared to 2008, in 2015 the distribution area of the Spartina alterniflora has increased 550 times. (11.54㎡ in 2008 to 6,394.22㎡ in 2015). The large increase of Spartina alterniflora calls for urgent management and additionary study on the subject. Thus, this study analyzed the geo-spatial information on the Spartina alterniflora such as its distribution area, the height of habitats and expected expansion area, and can act as the preliminary data for management.
급성폐쇄각발작의 과거력을 가진 백내장수술 시 수정체낭내확장고리의 효과
박정원,정현호,박상우.Jung Won Park. MD. Hyun Ho Jung. MD. Sang Woo Park. MD. PhD 대한안과학회 2013 대한안과학회지 Vol.54 No.9
Purpose: To evaluate the effect of a capsular tension ring (CTR) on the change in postoperative refractive errors and anterior chamber depth after cataract surgery in patients with a history of acute primary angle closure (APAC). Methods: We retrospectively reviewed medical records of 45 patients who underwent cataract surgery with a history of APAC. Forty five eyes were divided into 2 groups based on whether a CTR was implanted (n = 21) or not (n = 24). Spherical equivalent (SE) refractive errors were compared between the 2 groups for 12 months postoperatively. The postoperative anterior chamber depth (ACD) and volume (ACV) were compared between the 2 groups. Results: SE refractive errors in the CTR group were -0.59 ± 1.08 D at 6 months and -0.61 ± 1.04 D at 12 months postoperatively. In the non-CTR group, -0.64 ± 1.30 D, at 6 months and -0.67 ± 1.19 D at 12 months postoperatively. There was no statistically significant difference between 2 groups (p = 0.89, p = 0.84) and postoperative SE refraction shifted to myopic refractive power in both groups (p < 0.01). The postoperative ACD and ACV also showed no difference between the 2 groups (p = 0.13, p = 0.47). Conclusions: The postoperative ACD, ACV and myopic shift in patients with a history of APAC demonstrated no significant difference between CTR-implanted and non-CTR-implanted patient groups.
코경유 눈물주머니코안연결술시 히알루론산나트륨과 카르복시메틸셀룰로오스나트륨 혼합액 사용의 임상적 효과
박정원,박홍용,윤경철,Jung Won Park,Hong Yong Park,Kyung Chul Yoon 대한안과학회 2010 대한안과학회지 Vol.51 No.6
Purpose: To evaluate the effects of a mixed solution of sodium hyaluronate and sodium carboxymethylcellulose (HACMC, Guardix-sol®) for reducing postoperative adhesion after endonasal dacryocystorhinostomy. Methods: Endonasal dacryocystorhinostomy was performed on 58 patients with obstructions of the nasolacrimal system. We divided the 58 patients into two groups. At the completion of endonasal dacryocystorhinostomy, HACMC was applied to the operative site in the experimental group (n=26) and normal saline was applied in the control group (n=32). For the evaluation of clinical effectsand postoperative adhesion, subjective symptom score evaluations, lacrimal irrigation tests, fluorescein disappearance tests, and endoscopic examinations were performed at 1 week, 1 month, 3 months, and 6 months postoperatively. Results: The HACMC-treated patients showed better results than the control patients for subjective symptom scores, lacrimal irrigation tests, and fluorescein disappearance tests, but these differences were not statistically significant. Upon endoscopic examination, the HACMC group revealed lower incidence of adhesion at 1 week after surgery and lower severity of adhesion throughout the period of observation (p<0.05). Conclusions: The application of a mixed solution of HACMC may effectively reduce postoperative adhesion after endonasal dacryocystorhinostomy. J Korean Ophthalmol Soc 2010;51(6):795-801