• 식물병연구
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• 제26권1호
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• pp.53-56
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• 2020

2019년 5월, 잎 표면에서 적색 반점이 관찰되는 참소리쟁이를 충북 괴산군 인근 야산에서 채집하였다. 관찰된 병반의 앞면은 적색 및 황색의 병반이 관찰되었고, 뒷면에는 백색의 돌기가 관찰되었다. 다양한 현미경으로 자세하게 관찰한 결과, 돌기는 녹포자기로 확인되었으며, 많은 녹포자가 확인되었다. 녹포자는 구형 또는 난형이었고 19.0-24.4×19.0-24.5 ㎛의 크기를 가지면서 표면은 무사마귀형으로 관찰되었다. 계통학적 유연관계 분석을 위하여, large subunit rDNA 영역 및 cytochrome c oxidase subunit 3 (CO3) 유전자 영역을 이용하여 계통학적 유연관계를 분석한 결과, 참소리쟁이에서 관찰된 녹병균은 Puccinia pritzliana와 매우 근연한 관계를 가지고 있었다. 관찰된 기주, 포자세대, 형태 및 계통학적 유연관계 결과를 종합해 볼 때, 분석된 녹병균은 국내 미보고 녹병균인 P. phragmitis로 확인하였으며, 위 병원균에 의해 발생한 녹병을 참소리쟁이 잎녹병으로 제안하고자 한다.

• 대한화장품학회지
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• 제22권2호
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• pp.141-152
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• 1996

Many eastern females concern themselves about the condition and the color of their skin. The purpose of the present study is to classify the skin trouble and the change of the facial color due to hormonal cycle in female. We examined the actual cricumstances by questionnaires, and made patch tests of methyl nicotinate, representing rubefacient, to estimate the epidermal penetratin rate, and measured the facial color change during the menstrual cycle period to invest the correlation factors between skin trouble due to cosmetics and facial color change. Fifty-two percent of subjects had skin trouble relating to cosmetics. One second of subjects with skin trouble due to cosmetic complained the change of sysptom by menstrual cycle. The changes of systptom were related on premenstrual period. The skin trouble developed mainly on the first trimester of the pregnancy. In patch test of methyl nicotinate, most cases showed decreased threshold of the reaction on minstruation, and other cases showed increased reactivity of the skin of menstruation. In facial color measurements, it proves in the appearance of red spot, darkness, increasing the value and turning the hue to yellowish, Also it demonstrates that premenstruation hue turn red and value level decrease. During the period, facial color turns pale and hue progress to yellow. This fact coincides with the questionnaire. We have quqntified through questionnaire, which demonstrates it has good correlation with done to the subjects among the internal environment factors hormonal cycle influences the facial color change and the skin trouble due to cosmetics. Through this paper the development of an more fragmented make-up and skin care products is required to increase the interest to females, to make true the creation of beauty.

• 한국정보통신학회논문지
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• 제18권10호
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• pp.2417-2426
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• 2014

간접 시선 추적 시스템은 적외선 조명을 각막에 반사시켜 그 모습을 카메라로 촬영하여 얻은 이미지에서 시선을 계산한다. 적외선 조명이 각막에 반사되어 이미지에 나타난 점을 글린트라고 한다. 최근 간접 추적 시스템은 머리의 움직임에 민감하지 않고 캘리브레이션 과정을 거치지 않도록 하기 위해 여러 개의 적외선 조명, 즉 여러개의 글린트를 사용하는 경우가 많다. 하지만 실험 도중 글린트의 일부가 보이지 않을 수 있는데, 이러한 경우 해당 프레임에서는 시선 계산을 할 수 없게 된다. 본 논문에서는 여러 개의 적외선 조명을 사용하는 시선 추적 시스템에서 여러 가지 이유로 유실되거나 인식이 어려운 글린트의 모습을 살펴본 후, 인식이 가능한 나머지 글린트 위치를 이용하여 이러한 글린트의 위치를 복원하는 알고리즘을 제안한다. 이 알고리즘을 통해 시선 추적 시 유효한 이미지 프레임의 개수를 증가 시키고, 복원 단계에서 글린트의 위치 변형 모델을 이용하여 글린트의 왜곡 또한 보정하여 시선 추적 결과의 오차도 줄일 수 있다.

• 약학회지
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• 제31권1호
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• pp.33-39
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• 1987

In order to elucidate the defence mechanism of Cyprinus carpio nudus to Clonorchis sinensis, clonorchicidal substance in the epidermal mucus of this fish was isolated by silica gel column and thin layer chromatography and analyzed for its chemical nature by UV, IR and NMR-spectroscopy. The epidermal mucus of the fish was extracted by ethyl ether and separated into 2 fractions by column chromatography using petroleum ether/chloroform(30/70,v/v) as first solvent and methanol as second solvent. The second fraction with greyish white colour showed clonorchicidal effect. The second was again fractionated into greyish white precipitate and clonorchicidal greenish yellow supernatant fraction, by adding petroleum ether and standing the mixture for 5 days at $5^{\circ}C$. The latter was divided into 7 fractions in column chromatography with acetone/ benzene (10/90, v/v) as carrier. The fraction on equivalent to the spot of Rf. 0.225 value among them disclosed the strongest clonorchicidal effect. By this purification procedure, clonorchicidal substance was purified 154-fold with 0.9% yield from the mucus of the fish, and 10mg of the final fraction killed tne metaceicariae in 22 min. Infra red, nuclear magnetic resonance and ultraviolet spectrometric analysis of the purified substance revealed that the substance is linoleic acid. According to the results of the present studies it seemed that this fish could not be proper intermediate host of Clonorchis sixensis, and that defence mechanism of this fish to the worm seems to be correlated with clonorchicidal substance in epidermal mucus.

• 대한소아치과학회지
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• 제24권1호
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• pp.139-147
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• 1997

Argon laser used in this case report, is special in having two wavelength of 488, 514nm blue-green visible light spectrum. Blue light is used for composite resin polymerization and caries detection. Green light is used for soft tissue surgery and coagulation. Maximum absorption of this laser light occurs in red pigmentation such as hemoglobin. The argon laser may be well-suited for selective destruction of blood clots and hemangioma with minimal damage to adjacent tissues. Argon laser light penetrates tissue to the 1 mm depth, so its thermal intensity is lower than $CO_2$ laser light. Also, due to its short wavelength it can be focused in a small spot and even single gene can be excised by this laser and microscopy. After applicating argon laser to 4 patient for surgical procedure and to 1 patient for curing the composite resin, following results were obtained. 1. Improved visibility were gained due to hemostasis and no specific technique were needed according to easy recontouring of the tissue. 2. Ability to use by contact mode, tactile sense was superior but tissue dragability and accumulation of tissue on the tip needed sweeping motion. 3. Additive local anesthetic procedure was needed. 4. No suture and less curing time reduced chair time, this made argon laser available in pediatric dentistry.

• Journal of Photoscience
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• 제12권2호
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• pp.87-93
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• 2005

A new assay technique to distinguish between pure compounds and the isomeric mixtures has been suggested using single molecule (SM) fluorescence detection technique. Since the number of emission spots in a fluorophorespread film prepared from a genuine dye solution was determined by experimental condition, the deviation of spot numbers from the expected values could be considered to be an indication of lower purity of the sample solution. The lower limit of sample concentration for this assay was determined to be $5{\times}10^{-10}$ M to show uniform number of expected spots within 10% uncertainties in our experimental condition. An individual fluorescence intensity distribution for a mixture of isomers having doubly different emissivities was simulated by adding distributions obtained from Cy3 and nile red (NR) independently. The result indicated that the mixture could be identified from the pure compounds through the difference in the number of Gaussian functions to fit the distribution. This new assay technique can be applied to the purity test for synthetic biofluorophores which are usually prepared in small quantities not enough for classical ensemble assays.

• 한국식생활문화학회지
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• 제33권4호
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• pp.330-336
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• 2018

This study was conducted to determine the mixing conditions for Hibiscus syriacus L. chocolate depending on different addition ratios of Hibiscus syriacus L. and examine functionality in order to use Hibiscus syriacus L., which has excellent functionality and symbolizes Korea. To accomplish this, Hibiscus syriacus L. chocolate was manufactured by adding 0%, 2.5, 5, 7.5, and 10% of Hibiscus syriacus L. powder from the 'Samchulli' (Hibiscus syriacus 'Samchulli', which has reddish pink flower with red eye spot: SKK 14-2-72) variety to a coverture of white chocolate after which the antioxidant activity and quality characteristics were analyzed. As the amount of Hibiscus syriacus L. powder added to the chocolate increased, the chocolate color became darker, the pH decreased, and the sugar content and hardness increased. As a result of the sensory evaluation, the degree of preference increased as the amount of added Hibiscus syriacus L. powder increased to 7.5%. The degree of preference for color and flavor was the highest in the 5% added group, but the overall preference was 7.5% added chocolate. These findings demonstrate that adding Hibiscus syriacus L. powder to chocolate can increase chocolate functionality and preference and that there is a high possibility of Hibiscus syriacus L. chocolate development.

• 한국동물위생학회지
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• 제36권1호
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• pp.61-65
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• 2013

We investigated the prevalence of infectious duck diseases using 156 ducks reared in 18 farms of western Gyeong-nam province. As a result, duck viral hepatitis (12.8%), colibacillosis (7.1%), and fungal disease (9.0%) were detected. However, avian influenza and riemerellosis were not detected. During autopsies, we could grossly observed red swollen liver (12.8%), petechial or ecchymotic hemorrhage on liver (11.5%), and fibrinous perihepatitis (9.0%). Gray-white necrotic spot (23.1%), swollen spleen (22.8%), swollen kidney (20.5%), hyperemia or hemorrhage on tracheal mucous membrane (8.3%), and nodule in long or air sac (9.0%) were also found.

• 식물병연구
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• 제10권1호
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• pp.1-7
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• 2004

2003년은 냉해의 해였다. 3월부터 7월까지 저온이 지속되었고 생육기 내내 비가 자주 내려 강수량은 평년의 1.6배 일조시간은 평년의 68％ 수준이었다. 이 때문에 벼도 열병, 흰잎마름병이 심하게 발생하였고 강우에 의해 전반되는 역병이 대발생하여 고추의 경우 전국 재배면적의 55％가 피해를 입었다. 이외에 저온다습 조건에서 발생이 많은 잿빛곰팡이병 균핵병, 노균병이 전년에 비해 크게 증가하였고 과수의 경우 사과갈색무늬병, 배검은별무늬병이 대발생하여 큰 피해를 가져왔다.

• 대한유전성대사질환학회지
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• 제6권1호
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• pp.32-39
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• 2006

저자들은 출생 후 정상적인 발달을 보이다가 생후 6개월부터 의식과 운동 발달의 퇴행을 보이던 13개월 환아에서 효소 검사를 시행하여 ${\beta}$-galactosidase의 결핍을 확인하고 $GM_1$-gangliosidosis type 1으로 진단하였지만, 후에 추가적으로 시행한 효소 검사에서 ${\alpha}$-neuraminidase의 결핍도 발견되어 galactosialidosis로 진단한 증례를 경험하였기에 문헌 고찰과 함께 보고하고자 한다.