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      • KCI등재후보

        한국연안에서 분리한 적조형성 미세조류 10종의 성장에 미치는 온도, 염분, 광도의 영향

        이창규,이옥희,이삼근,Lee, Chang-Kyu,Lee, Ok-Hee,Lee, Sam-Geun 한국해양학회 2005 바다 Vol.10 No.1

        한국 연안에서 출현하는 주요 적조생물의 적조발생 특성을 알아보기 위해 편모조류 10종을 대상으로 하여 수온과 염분, 광도에 따른 종의 성장률을 조사하였고, 또한 최근 13년간의 적조발생자료와 1999년도 및 2000년도 남해안연안에서 조사한 적조생물의 출현밀도를 비교, 분석하였다. 수온에 따른 적조생물의 성장은 Heterocapsa triquetra, Eutreptiella gymnastica, Alexandrium tamarense의 경우 대체로 $16{\sim}22^{\circ}C$에서 최대성장률을 보였으나, $10{\sim}16^{\circ}C$의 저수온에서도 비교적 높은 성장률을 보였고 $22^{\circ}C$이상의 고수온에서는 오히려 성장률이 급격히 감소되는 것으로 나타나 저온성종의 특성을 보였다. Prorocentrum micans와 Pyramimonas sp.는 $19^{\circ}C$ 이하의 저수온에서는 낮은 성장률을 보였으나 $22{\sim}25^{\circ}C$에서는 높은 성장률을 보여 고온종의 특성을 나타냈으며, Akashiwo sanguinea, Hetemsigma akashiwo Prorocentrum minimum, Scrippsiella tnchoidea는 $16{\sim}25^{\circ}C$의 광범위한 수온 범위에서 비교적 높은 성장률을 보여 광온성종의 특성을 보였다. 또한 이러한 결과는 이 종들이 자연상태에서 적조를 일으키는 수온 범위와도 대체로 일치하였다 염분에 따른 성장은 대부분의 종이 염분 $30{\sim}35$ psu에서 높은 성장률을 보였는데, E. gymnastica는 35 psu 이상의 고염분보다는 $10{\sim}30$ psu의 저염분에서 더 높은 성장률을 나타내 저염성을 보였으며, H. akashiwo, P. minimum, H. triquetra는 $15{\sim}40$ psu의 넓은 염분 범위에서 양호한 성장률을 보여 광염성종의 특성을 보였다. 이종들은 한국 연안에서 강우 직후 염분이 25 psu이하로 하강하는 저염분 상태에서 빈번히 적조를 일으키고 있는데, 이것은 이종들의 저염 및 광염성 특성과 밀접한 관련이 있는 것으로 판단되었다. 광도별 성장은 H. akashiwo, P. minimum, Pyramimonas sp.는 $150\;{\mu}E{\cdot}m^{-2}{\cdot}s^{-1}$의 고광도에서 비교적 높은 성장률을 보였다. A. sanguinea, A. tamarense, H. triquetra는 $150{\sim}100\;{\mu}E{\cdot}m^{-2}{\cdot}s^{-1}$에서 가장 높은 성장률을 보였고 $100\;{\mu}E{\cdot}m^{-2}{\cdot}s^{-1}$ 이상의 고광도에서 는 오히려 성장률이 급격히 감소되는 것으로 나타났다. 전반적으로 수온과 일조량이 높은 시기인 하계에 적조를 일으키는 고온성 종은 고광도에서 성장이 좋은 것으로 나타났고, 수온과 일조량이 낮은 동, 춘계에 적조를 일으키는 저온성 종은 저 광도에서 성장이 양호한 것으로 나타났다. In order to understand growth characteristics of ten major species of microalgae responsible for frequent harmful algal blooms in Korean coastal waters, the growth rates of the isolates were examined in relation with the impacts of water temperature, salinity and irradiance. In addition, their bloom events since 1990 as well as monthly abundance of vegetative cells were analyzed. Heterocapsa triquetra, Eutreptiella gymnastica and Alexandrium tamarense were considered as relatively mid temperature adapted species in that growth rates were comparatively high at low water temperatures of $10{\sim}16^{\circ}C$ and drastically decreased at above $22^{\circ}C$. Prorocentrum micans and Pyramimonas sp. were categorized as relatively high temperature adapted species by showing comparatively better growths at high water temperatures above $25^{\circ}C$. Akashiwo sanguinea, Heterosigma akashiwo, Prorocentrum minimum and Scrippsiella trochoidea were eurythermal species with relative high growth rates in a broad ranges of water temperature, $16{\sim}25^{\circ}C$ were slightly halophobic, showing better growths at low salinities of $10{\sim}30$ psu than at above 35 psu. H. akashiwo, P. minimum and H. triquetra were euryhaline species with remarkable growths in a broad ranges of salinity, 15-40 psu. Frequent algal blooms by these three species at extremely low salinities below 25 psu after rainfall were attributed to their euryhaline and slightly halophobic physiological characteristics. Growth rates of H. akashiwo, P. minimum and Pyraminonas sp. increased with the increase of irradiance within the experimental ranges of $2{\sim}150\;{\mu}E{\cdot}m^{-2}{\cdot}s^{-1}$. However, A. sanguinea, A. tamarense and H. triquetra showed better growths at comparatively low irradiance of $50{\sim}100\;{\mu}E{\cdot}m^{-2}{\cdot}s^{-1}$ and drastic decreases in growth rates above $150\;{\mu}E{\cdot}m^{-2}{\cdot}s^{-1}$ of irradiance. Overall, relatively high temperature adapted species make blooms frequently in high water temperature season with strong natural irradiance, and relatively low temperature adapted species grow better at low water temperature with relatively weak natural irradiance.

      • 原子力損害賠償法上 損害賠償의 範圍에 관한 小考

        이창규(Lee, Chang-kyu) 경희법학연구소 2010 KHU 글로벌 기업법무 리뷰 Vol.3 No.2

        The 1960 Paris Convention on Nuclear tort (nuclear area of the Paris Convention Article 3 ought to get down on yourself (Convention on Third Party Liability in the field of Nuclear Damage; Paris Convention), 1963 Vienna Convention (on civil liability for nuclear damage in Vienna Convention (Vienna Convention on Civil Liability for Nuclear Damage; Vienna Convention), starting with the aforementioned 1979 TMI accident, the Chernobyl nuclear accident in 1986 through the reserve to pay damages to the need for securing an additional system of the Vienna Convention liability limits Convention on the increase and compensation (CSC: Convention on Supplementary Compensation for Nuclear Damage) is the realization of the adoption in 1997, the Paris Convention liability in the 2004 adoption of the impression that as soon as the first payment from the Paris Convention, subject to further funding system introduced here in Brussels Supplementary Convention (Convention Supplementary to the Paris Convention on Third Party Liability in the field of Nuclear Energy: the Brussels Supplementary Convention) increase in the compensation limit was two behind the scenes look, but in the United States (Price-Anderson Act) of through amendments to nuclear power operators liability dramatically escalated substantially amended the Act (2005) This was in Germany to deny both domestically and Limitation of Liability (1985 Revision), the Paris Convention and the Brussels Supplementary Convention, beyond the limits of Major funding for the preparation of the compensation system was established (2002 revision). In the case of Japan, Tokyo Electric Power 2007 by an earthquake in the wake of the incident nuclear radiation damages the reality of the issue of damages yielded this problem being caused in our country a lot of the current Nuclear Compensation Act is affecting your hands. This country is associated with the country s nuclear tort of Atomic Energy was enacted in 1969 through a revision of the turbine while the international trend in the direction of conforming to has changed. But our country is still not a member of various nuclear treaties, but the framework of the Convention can be said quite approached. Especially the principle of strict liability, the principle of concentrated responsibility, the principle of limited liability and regulation. But the nuclear issue in the scope of damages for loss of prestige in the interpretation of the lack of regulation through tort nuclear power is bound to set a range of. In other words, the perpetrators of the act of others, harm caused the horse if the illegal configuration requirements to meet, he or she thereby damage caused in whole, but within a certain range within the main damages only for the liability, however, nuclear operators nuclear damages responsibility in order to belong to a nuclear accident that occurred within the scope of damages remedies out of harm should be done to determine the normative judgments. Nuclear strict liability for tort by recognizing that the scope of responsibility for the negligence and causation are equally applied to predict at the time to anticipate and also to assess compensation for damages should normally occur. In other words, the establishment of strict liability only in the presence of fruit just do not ask for another dot, unlike any other illegal activity will be addressed because there is no particular reason. In other words, even if strict liability is the general rules and theories of tort are subject to. So these have sufficient awareness of issues under the law and common law, first in our range of damages compared to the general theory of vomit after examination, to determine the scope of nuclear energy on tort law through the Act on the basis of the scope of damages can find out I will.

      • KCI등재

        남해안 연안에서 적조생물, Cochlodinium polykikoides, Gyrodinium impudicum, Gymnodinium catenatum의 출현상황과 온도, 염분, 조도 및 영양염류에 따른 성장특성

        이창규,김형철,이삼근,정창수,김학균,임월애,LEE Chang Kyu,KIM Hyung Chul,LEE Sam-Geun,JUNG Chang Su,KIM Hak Gyoon,LIM Wol Ae 한국수산과학회 2001 한국수산과학회지 Vol.34 No.5

        적조생물 Cochlodinium polykrikoides, Gyrodinium impudicum, Gymnodinium catenatum은 독성을 지니거나, 적조를 일으킴으로써 수산피해 및 보건위생상의 문제를 야기시키는 종이다. 이 종들의 적조발생 환경과 기작을 이해하기 위해서는 종별 생태생리 (eco-physiology) 특성 등을 파악할 필요가 있다. 본 실험에서는 한국 남해안 연안에서 이들 3종의 출현상황과 성장특성을 파악하기 위해 이 해역에서 분리한 종을 대상으로 온도, 염분, 조도 및 영양염류에 따른 성장도를 조사하였다. 1999년도 남해안 남해도, 나로도, 완도 연안에서 이들 3종의 최초출현시기는 수온이 $22.8\sim26.5^{\circ}C$인 7월 중순에서 8월 중순으로써 서로 비슷한 시기에 동반 출현하였다. 유영세포의 소멸시기는 G. catenatum의 경우 8월 중, 하순이었고, C. polykrikoides와 G. impudicum은 수온이 $23^{\circ}C$ 이하로 하강하는 9월 하순이었다. 출현기간 중의 최대밀도는 C. polykrikoides의 경우 $40\times10^6$cells/L 이상으로써 고밀도 증식을 하였으나, G. impudicum과 C. catenatum은 각각 3,460ce11s/L 및 440ce11s/L로써 매우 낮은 밀도로 존재하였다. 배양실험에서 C. polykrikoides, G. impudicum, G. catenatum는 $22\sim28^{\circ}C$에서 양호한 성장을 보였고, 최적수온은 $25^{\circ}C$ 내외로 판단되었는데, 이러한 결과는 적조발생시의 수온과 대체로 일치하였다. 염분에 따른 성장률은 3종 모두 $30\sim35\%$에서 양호한 성장률을 보였다. 3종 중 G. impudicum은 비교적 광염성의 특징을 보였고, G. cstenatum은 $35\%$ 이상의 고염분에서 특히, 저조한 성장률을 보였다. 조도에 따른 성장은 C. polykrikoides와 G. impudicum의 경우 특히 7,5001ux 이상의 고조도에서 성장률이 현저히 높은 것으로 나타났다. 이러한 결과는 C. polykrikoides의 경우 조도가 높은 하계에 표층에서 강한 집적현상을 보이면서도 광저해현상을 밟지 않고 양호한 증식을 할 수 있는 특성과 관련이 있을 것으로 추정되었다. C. polykrikoides와 G. impudicum의 질산 및 암모니아 질소 농도에 따른 성장은 $40{\mu}M$까지는 농도가 높을수록 성장률도 증가하였으나 그 이상에서는 큰 차이를 보이지 않아, 두 종의 질소 임계농도는 $13.5\~40{\mu}M$로 판단되었다. 또한, 인산인은 $4.05{\mu}M$ 까지는 농도가 높을수록 성장률도 증가하였으나 그 이상에서는 큰 성장차를 보이지 않아, 두 종 모두 인산인의 임계농도는 $1.35\sim4.05{\mu}M$로 판단되었다. 한편, C. polyklikoides는 DIN과 DIP 농도가 각각 $1.2{\mu}M$ 및 $0.3{\mu}M$ 이하로 낮았던 나로도와 남해도 외측해역에서도 적조를 형성하였다. 이와 같이 낮은 영양염류 하에서 왕성하게 증식할 수 있었던 이유는 이 종의 경우 일간 수직이동을 통해 야간에 저층에서 풍부한 영양염류를 흡수할 수 있었기 때문으로 해석되었다. Three harmful algal bloom species with similar morphology, Cochlodinium polykrikoides, Gyodinium impudicum and Gymodinium catenatum have damaged to aquatic animals or human health by either making massive blooms or intoxication of shellfishes in a food chain. Eco-physiological and hydrodynamic studies on the harmful algae offer useful informations in the understanding their bloom mechanism by giving promising data for the prediction and modelling of harmful algal blooms event. Thus, we studied the abundance of these species in the coastal area of South Sea of Korea and their effects of temperature, salinity, irradiance and nutrient on the growth for the isolates. The timing for initial appearance of the three species around the coastal area of Namhaedo, Narodo and Wando was between Bate July and late August in 1999 when water temperature ranged from $22.8^{\circ}C\;to\;26.5^{\circ}C$ Vegetative cells of C. polykrikoides and G. impudicum were abundant until late September when water temperature had been dropped to less than $23^{\circ}C$. By contrast, vegetative cell of G. catenatum disappeared before early September, showing shorter period of abundance than the other two species in the South Sea. Both G. impudicum and G. catenatum revealed comparatively low density with a maximal cell density of 3,460 cells/L and 440 cells/L, respectively without making any bloom, while C. polykrikoides made massive blooms with a maximal cell density more than $40\times10^6$cells/L, The three species showed a better growth at the relatively higher water temperature ranging from 22 to $28^{\circ}C$ with their maximal growth rate at $25^{\circ}C$ in culture, which almost corresponded with the water temperature during the outbreak of C. polykrikoides in the coastal area of South Sea. Also, they all showed a relatively higher growth at the salinity from 30 to $35\%$. Specially, G. impudicum showed the euryhalic characteristics among the species, On the other hand, growth rate of G. catenatum decreased sharply with the increase of water temperature at the experimental ranges more than $35\%$. The higher of light intensities showed the better growth rates for the three species, Moreover, C. polykrikoides and G. impudirum continued their exponential growth even at 7,500 lux, the highest level of light intensity in the experiment, Therefore, It is assumed that C. polykrikoides has a physiological capability to adapt and utilize higher irradiance resulting in the higher growth rate without any photo inhibition response at the sea surface where there is usually strong irradiance during its blooming season. Although C. poiykikoides and G. impudicum continued their linear growth with the increase of nitrate ($NO_3^-$) and ammonium ($NH_4^-$) concentrations at less than the $40{\mu}M$, they didn't show any significant differences in growth rates with the increase of nitrate and ammonium concentrations at more than $40{\mu}M$, signifying that the nitrogen critical point for the growth of the two species stands between 13.5 and $40{\mu}M$. Also, even though both of the two species continued their linear growth with the increase of phosphate ($PO_4^{2-}$) concentrations at less than the $4.05{\mu}M$, there were no any significant differences in growth rates with the increase of phosphate concentrations at more than $4.05{\mu}M$, signifying that the phosphate critical point for the growth of the two species stands between 1.35 and $4.05{\mu}M$. On the other hand, C. polykrikoides has made blooms at the oligotrophic environment near Narodo and Namhaedo where the concentration of DIN and DIP are less than 1.2 and $0.3{\mu}M$, respectively. We attributed this phenomenon to its own ecological characteristics of diel vertical migration through which C. polykrikoides could uptake en

      • KCI등재후보

        콤바인 HST 전자제어시스템 개발

        서신원(Sin-Won Seo),허윤근(Yun-Kun Huh),이제용(Je-Yong Lee),이창규(Chang-Kyu Lee),배근수(Keun-Soo Bae) 충남대학교 농업과학연구소 2011 농업과학연구 Vol.38 No.1

        I/An electro-hydraulic transmission having advantages of convenience, safety, simple linking and high power, and an electronic control system were designed and fabricated. In this study, characteristics of the control system were investigated through outdoor tests for evaluation of installation of the system on a combine. Major findings were as followings. 1. Experiment for performance evaluation of the control system was conducted on concrete road. With steering lever in neutral position, driving HST swash plate and left/right wheel speed increased in proportion to driving lever angle. In case of steering control, steering swash plate angle changed in proportion to steering lever angle. This should cause increase in outer wheel speed, but it was observed that HST swash plate was controlled toward neutral to maintain the speed before steering. As a result, speed before steering was maintained despite the change in outer wheel speed by steering HST swash plate angle change. 2. It was observed that the HST system enabled steering with outer wheel maintained at constant speeds while inner wheel speed decreased, which was more stable than conventional mechanical links. In addition, for the selected 5 criteria, experiment showed satisfactory results and it was judged that installation on real vehicle would be feasible. 3. The control system showed response property of appropriate forward/reverse movement and lift/right steering, without causing any problems during experiment on concrete. Result of response property experiment on field operation also showed appropriate control over forward/reverse movement and left/right steering

      • KCI등재

        중간 포도막염과 망막박리를 동반한 쯔쯔가무시병 1예

        이창규,박정민,Chang-Kyu Lee,MD,Jung Min Park,MD 대한안과학회 2010 대한안과학회지 Vol.51 No.5

        Purpose: The authors report a Tsutsugamushi patient who has intermediate uveitis and rhegmatogenous retinal detachment without a typical skin eschar, which may be rare. Case summary: The authors present a case of a 63-year-old man who complained of fever, chills, and headache, with lymphadenopathy, hepatomegaly, reticulonodular pneumonia, and blurred vision in the right eye after descending a mountain in autumn. Serological findings showed elevated titers for strains of Rickettsia tsutsugamushi, even though no eschar could be found on his body. In addition, the ophthalmologic examination disclosed vitreous opacity as uveitis in his right eye; thus, the patient was treated for Tsutsugamushi disease. However, retinal detachment was found in his right eye even after treatment. Thus, a vitrectomy and intravitreal silicone oil injection was performed, and the patient’s best corrected visual acuity improved from hand motion to 0.04 on the 7th day after the operation. J Korean Ophthalmol Soc 2010;51(5):784-789

      • KCI등재

        방풍통성산(方風通聖散) 전탕액(煎湯液)의 면역(免疫) 조절작용(調節作用)

        이창규,송정모,Lee, Chang-kyu,Song, Jeong-mo 사상체질의학회 1998 사상체질의학회지 Vol.10 No.2

        The purpose of this research was to investigate effects of Bangpoongtongsungsan water extract(BTSE) on the immune reaction, anti-allergy action and anti-inflammatory action in BALB/c mice. The administration of BTSE (500mg/kg) enhanced the cell viability of thymocytes and the population of helper T cells in splenic T-lymphocytes. BTSE suppressed the production of nitric oxide, but enhanced the phagocytic activity in peritoneal macrophages. BTSE enhanced hemagglutination titer in mice. BTSE inhibited passive cutaneous anaphylaxis induced by egg albumin in rat, the lethal anaphylaxis induced by platelet activating factor and compound 48/80 in mice, and then inhibited the degranulation of peritoneal mast cells induced by compound 48/80. BTSE did not inhibit Arthus reaction, but inhibited the delayed type hypersensitivity induced by SRBC and contact dermatitis induced by DNFB. BTSE inhibited the acute hind paw edema induced by histamine after 30 minutes, the permeability of evans blue into peritoneal cavity induced by acetic acid and the writhing syndrome induced by acetic acid. These results suggest that BTSE has an immunopotentiative action, anti-allergy action and anti-inflammatory action via the inhibition of histamine release.

      • KCI등재

        눈꺼풀처짐을 동반한 위눈꺼풀 결절 한선종 1예

        이창규,김상수,Chang-Kyu Lee,Sang-Soo Kim 대한안과학회 2011 대한안과학회지 Vol.52 No.9

        Purpose: To report the presentation and management of an atypical and advanced case of nodular hidradenoma of the eyelid with ptosis. Case summary: A 64-year-old woman who presented with a palpable growing nodular mass and ptosis was tested with marginal reflex distance 1 as right eye 1 mm, left eye -1.5 mm and levator function test as 12 mm and 10 mm, respectively during a hospital visit. The patient was tentatively diagnosed with eyelid adnexal tumor with mechanical ptosis and was managed by surgical excision of the lesion. Histology confirmed hidradenoma. Conclusions: Hidradenomas are benign adnexal tumors originating from the eccrine gland and rarely detectable in the eyelid. However, rudimentary glandular structures can be a possible tumor source. Nodular hidradenoma should be considered in the differential diagnosis of adnexal masses and such lesions may cause significant functional and cosmetic morbidity despite their histologically benign nature. J Korean Ophthalmol Soc 2011;52(9):1094-1098

      • KCI등재
      • KCI등재

        고혈압과 습성 나이관련 황반변성이 연관된 자발적인 맥락막상강 출혈 2예

        이창규,이수정,박정민,Chang-Kyu Lee,Soojung Lee,Jung Min Park 대한안과학회 2011 대한안과학회지 Vol.52 No.8

        Purpose: To report two cases of spontaneous suprachoroidal hemorrhage associated with wet type of age-related macular degeneration (ARMD) and systemic hypertension. Case summary: Two women, aged 76 and 73 years, with a history of systemic hypertension for more than ten years had been treated in an eye clinic for wet type of ARMD. The 76-year-old woman was scheduled to receive an injection of intravitreal Lucentis<sup>? but experienced sudden onset loss of vision and ocular pain in her left eye. The 73-year-old woman had received no specific treatment for wet type of ARMD. She also complained of visual disturbance and ocular pain. In these two cases, slit lamp or B-scan examination disclosed suprachoroidal hemorrhage. Surgical intervention relieved the ocular pain and symptoms in both cases. Conclusions: Even if a patient has not received systemic anticoagulation/thrombolytic therapy, if wet-type ARMD patients are elderly and have systemic hypertension, they should receive regular follow-ups because old age and systemic hypertension are risk factors of spontaneous suprachoroidal hemorrhage. J Korean Ophthalmol Soc 2011;52(8):999-1004

      • KCI등재

        소아백내장 수술 후 녹내장 빈도 및 위험 인자

        이창규,김상수,김완수,Chang-Kyu Lee,Sang-Soo Kim,Wan-Soo Kim 대한안과학회 2011 대한안과학회지 Vol.52 No.10

        Purpose: To evaluate the incidence and risk factors of glaucoma after pediatric cataract surgery. Methods: We retrospectively reviewed 173 eyes which underwent pediatric cataract surgery from June 1998 to December 2009. The following parameters were ascertained: sex, laterality of cataract, age at diagnosis, age at surgery, cataract type, operation methods, optic capture, axial length (AXL), keratometry, follow-up period, and association of general abnormality. Results: Out of the 173 eyes reviewed, 8.6% were diagnosed with glaucoma. The factors not significantly different in the glaucoma group compared to the non-glaucoma group were sex, laterality of cataract, age at diagnosis, AXL, and keratometry (<em>p</em> > 0.05). The incidence of glaucoma was significantly higher in the aphakic group compared to the pseudophakic group. Young age at surgery, no optic capture, pars plana lensectomy, sulcus IOL implantation, and nuclear type cataract were significantly associated with increased risk of postoperative glaucoma (<em>p</em> < 0.05). Conclusions: Patients with several predictors of postoperative glaucoma which may affect visual acuity may require extensive postoperative care after pediatric cataract surgery. J Korean Ophthalmol Soc 2011;52(10):1150-1160

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