• Title/Summary/Keyword: White spots

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New Record of the Stargazer Fish, Ichthyscopus lebeck sannio(Uranoscopidae) from Korea (한국산(韓國産) 통구멍과(科) 어류(魚類) 1 미기록종(未記綠種), Ichthyscopus lebeck sannio)

  • Lee, Chung-Lyul;Paek, Moon-Ha
    • Korean Journal of Ichthyology
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    • v.7 no.1
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    • pp.8-11
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    • 1995
  • A stargazer fish, Ichthyscopus lebeck sannio, of family Uranoscopidae was collected for the first time in Cheju-shi, Cheju-do. Ichthyscopus lebeck sannio has several taxonomic characteristics : large white spots on the surface of body ; without cleithrum spine ; developed and branched labial fimbriae on the both lips ; triangular pectoral fin ; having fimbriated membranous projection on upper part of pectoral fin and having single dorsal fin.

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The Research on Lighting Design of Parks

  • Zhang, Rui;Piao, Yong-Ji;Cao, Lin-Sen;Cho, Tae-Dong
    • Journal of Environmental Science International
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    • v.23 no.6
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    • pp.1013-1020
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    • 2014
  • Based on the survey of the parks in Tai'an by questionnaire survey, on-the-spot investigation and in-depth interview, the paper analyzes the tendencies of visitors in modern landscape lighting design forms and methods from two terms: primary attributes and the preferences of artistic lighting design. To increase the safety of the parks is a pressing need for visitors. Visitors have a pressing need for increasing the safety of the parks' lighting and artistic quality. Most visitors think the parks' lighting has blind spots and the brightness is not enough. Visitors' night activities in the park will be insecure. As to artistry aspects, people prefer strong artistic style of lamps and lanterns to the common, such as ethnic style and animal image; Tourists prefer to use white light and yellow light to illuminate trees, because these colors make people feel more warm and amiable. This research provides basic data for lighting design of parks.

A Conservation Treatment for the Seated Iron Buddha Statue of Dopian Temple, Cheolwon (철원 도피안사 철조비로자나불상의 보존처리)

  • Hong, Jong-Ouk;Hwang, Jin-Ju;Choi, Joon-Hyun;Shin, Hee-Nai;Lee, Yo-Han;Han, Byung-Il;Le, Oh-Hee
    • 보존과학연구
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    • s.30
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    • pp.171-187
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    • 2009
  • The Seated iron Vairocana Buddha statue of Dopiansa Temple, Cheolwon was designated National treasure No. 63, it is very important to rearch about Korean Buddha statue because it has an inscription on the back indicates that it was made in 865 A.D., the fifth year of the reign of King Gyeongmun(861-875) of Unified Silla(668-935), through the devoted faith of some 1,500 Buddhist followers of the Cheorwon-gun area. In this conservation treatment, for the Seated iron Vairocana Buddha statue of Dopiansa Temple, Cheolwon plating layer and cashew paint layer of the iron pedestal were removed and for the paint the Body of the Buddha, fake metal layer and plaster layer were removed, stabilizing treatment and coating treatment were done, and removal and restoration of earlobe which had been damaged and later was restored with plaster in the regilding in 1988, and the white hair on forehead was replaced with material of rock crystal, and conch-shaped hair damaged was restored on 35 spots.

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A taxonomic review of Korean Asarum (Aristolochiaceae) (한국산 족도리풀속의 분류학적 재검토)

  • Oh, Byoung-Un
    • Korean Journal of Plant Taxonomy
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    • v.38 no.3
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    • pp.251-270
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    • 2008
  • Members of the genus Asarum of Korea were reviewed taxonomically, and classified into seven species. Among them, four species - A. koreanum, A. maculatum, A. patens and A. versicolor - were recorded as Korean endemics. The most valuable taxonomic characters in identifying the Asarum taxa were shape, size and color of the calyx tube and lobe. In addition, the presence of white spots on the adaxial surface, size and color of leaf, presence of trichome, shape and size of the stylar protuberance and thickness of the calyx lobe were also important characters. Keys to the species including descriptions and figures of floral structures of each taxon were provided here for the accurate identification of each species.

Immunohistochemistry of Janus Kinase 1 (JAK1) Expression in Vitiligo

  • Abdou, Asmaa Gaber;Maraee, Alaa;Yassien, Hossam;Sarhan, Mona
    • Journal of Pathology and Translational Medicine
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    • v.52 no.6
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    • pp.363-368
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    • 2018
  • Background: Vitiligo is a chronic autoimmune disease in which the destruction of melanocytes causes white spots on the affected skin. Janus kinase (JAK) is a family of intracellular, non-receptor tyrosine kinases that transduce cytokine-mediated signals via the JAK-signal transducer and activator of transcription pathway. The aim of the present study is to explore the possible role of JAK1 in the pathogenesis of vitiligo using immunohistochemical methods. Methods: The current study was conducted in a sample of 39 patients who presented with vitiligo and 22 healthy individuals who were age and sex matched as a control group. We used immunohistochemistry to evaluate JAK1 status (intensity and distribution) and assess the percentage of residual melanocytes using human melanoma black 45 (HMB45). Results: Intense and diffuse JAK1 expression was significantly more likely to indicate vitiliginous skin compared to normal skin (p<.001). Strong and diffuse JAK1 expression was associated with short disease duration, female sex, and lower percentage of melanocytes (detected by HMB45) (p<.05). Conclusions: JAK1 may be involved in the pathogenesis of vitiligo, as indicated by intense and diffuse expression compared to control and association with lower percentage of melanocytes detected by HMB45 immunostaining.

Morphological Characteristics and Material Comparison of Native Orostachys species (Orostachys japonica (Maxim.) A. Berger, Orostachys minuta (Kom.) A. Berger, Orostachys chongsunensis Y. N. Lee) (자생 바위솔(바위솔, 정선바위솔, 좀바위솔)의 형태적 특성과 성분 비교)

  • Jung, J.H.;Park, N.B.
    • Journal of Practical Agriculture & Fisheries Research
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    • v.21 no.2
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    • pp.5-13
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    • 2019
  • Orostachys species grow from anywhere in Korea. This variety, which lives in the harsh areas of the beach and mountains, is known to have as much change as it was isolated. It has been used as a medicine for a long time, and now the flower is beautiful and has been developed for horticulture. As a result of morphological characteristics and component analysis of three Orostachys species, the following results were obtained. 1. Orostachys species showed two types of leaves according to the growing environment. O. japonica (Maxim.) A. Berger and O. minuta (Kom.) A. Berger were lanceolate, and O. chongsunensis Y. N. Lee was obovate. 2. The leaves were all green. However, some of the O. japonica (Maxim.) A. Berger had white powder. Some of the O. minuta (Kom.) A. Berger was green with red spots on the back. O. chongsunensis Y. N. Lee showed strong gray before flowering but weak green when flowering. 3. The thorns of the leaves were O. japonica (Maxim.) A. Berger and O. minuta (Kom.), but O. chongsunensis Y. N. Lee was not. 4. Whether it was a leaf dot or not, there were dots in O. japonica (Maxim.) A. Berger and there were dots on the O. minuta (Kom.) and the O. chongsunensis Y. N. Lee. 5. The flowers were all white, and the stamens were red in O. japonica (Maxim.) A. Berger and O. minuta (Kom.) A. Berger and white in O. chongsunensis Y. N. Lee. 6. It was confirmed that the ingredients in Orostachys species contained kaempferol, quercetin, flavonoid etc., which have high antioxidant activity.

Effect of Simulated Acid Rain on Crops (농작물(農作物)에 대(對)한 인공산성(人工酸性)비의 영향(影響))

  • Kim, Bok-Young;Kim, Kyu-Sik
    • Korean Journal of Soil Science and Fertilizer
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    • v.21 no.2
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    • pp.161-167
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    • 1988
  • Studies were carried out to examine the effects of simulated acid rain on the various crops of rice, peper, tomato, pumpkin, egg plant, potato, soybean, radish, cucumber, common pea, sweet potato, corn, lettuce, chinse cabbage, spinach, under the condition of the rains of pH 3.0. The rain was adjusted to pH 4.0, 3.0, 2.0 with sulfuric acid, and soybeans were exposed with the various pH levels, eighteen times every other days. The symptoms of damage, ratios of destroyed leaf and sulphur content by leaves were investigated. The results obtained were as follows. 1. The exposure to the rain resulted in the reddish brown or white pigment spots in the leaves surface and the colour was developed red and darker along the edge of spots. 2. Most crops were affected with acid rain of pH 3.0 at which the amount of chlorophyl was decreased. 3. The spinach, chinese cabbage, lettuce were sensitive to the acid rain, however, the peper, tomato pumpkin were resistance to it. 4. The content of chlorophyl was decreased with increasing leave injury. 5. The sulphur content in leave was increased with increasing acidity of the rain, however the yield was decreased.

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Biological Characteristics of Lycorma delicatula and the Control Effects of Some Insecticides (꽃매미(Lycorma delicatula)의 생태 특성 및 약제 살충 효과)

  • Park, JI-Doo;Kim, Min-Young;Lee, Sang-Gil;Shin, Sang-Chul;Kim, Jun-Heon;Park, Il-Kwon
    • Korean journal of applied entomology
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    • v.48 no.1
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    • pp.53-57
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    • 2009
  • Biological Characteristics of Lycorma delicatula and insecticidal activity of some insecticides against nymphs of L. delicatula was investigated. Nymph of L. delicatula had 4 instars, and color of body was black. There were white spots on the body of 1st-3rd nymph. Upper body became red at 4th nymph. Adult forewings were brownish, and had black spots. Color of hind wing were red. The egg mass was covered with a yellowish brown secretion. The adult of L. delicatula emerged once a year. Among test insecticides, deltamethrin 1% EC and fenitrothion 50% EC showed very quick and strong insecticidal activity against the 2nd-3rd nymphs of L. delicatula. Imidacloprid 4% SL and clothianidin 8% SC showed 100% insecticidal activity at 24h after treatment. Thiacoprid 10% SC revealed the weakest insecticidal activity among the insecticides tested.

Anatomical Toxicity of Pufferfishes, Chinese Fugu obscurus and Indonesian Lagocepalus wheeleri (인도네시아산 흰 밀복 및 중국산 황복의 조직별 독성)

  • 김동수;이화정;이명자;이문조;김현대
    • The Korean Journal of Food And Nutrition
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    • v.9 no.4
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    • pp.361-365
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    • 1996
  • Indonesian Lagocephalus wheeleri ("White-milbog") and Chinese Fugu obscurus ("Hwang-bong") puffers were dissected into liver, intestine, ovary or testis, skin and muscle for assay of toxicity, Also, the toxins from the puffer liver were partially purified and analyzed. The frequency of toxic specimens for Lagocephalus wheeleri was 20, 40, 0 and 10%, in terms of liver, intestine, skin and muscle, respectively; and average toxicity was 5.5$\pm$0.9(Mean$\pm$S.E.), 11.8$\pm$4.2, 2.2$\pm$0.1 and 3.0$\pm$0.8 MU/g, respectively. All of Fugu obscurus specimens had toxicity ranging between 2 and 210 MU/g. The frequency of toxicity in intestine and ovary, both 100% was to be higher percentage tan that of other tissues. The toxinsgave two spots tetrodotoxin(TTX) and anhydro-tetrodotoxin(anh-TTX) on TLC. Also, the toxin of each puffer species showed two spots in electrophoresis. In HPLC analysis of Fugu obscurus, the toxins showed TTX, 4-epi-TTX and anh-TTX.epi-TTX and anh-TTX.

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First Report of Curvularia Leaf Blight Caused by Curvularia trifolii on Creeping Bentgrass in Korea (Curvularia trifolii에 의한 크리핑벤트그래스 잎마름병 발생)

  • Sung, Chang-Hyun;Koo, Jun-Hak;Kim, Jung-Ho;Yoon, Jung-Ho;Lee, Jung-Han;Shim, Kyu-Yul;Kwak, Youn-Sig;Chang, Seog-Won
    • Weed & Turfgrass Science
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    • v.5 no.2
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    • pp.101-104
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    • 2016
  • Curvularia leaf blight of creeping bentgrass (Agrostis stolonifera) putting green by caused Curvularia trifolii was observed in Hapcheon, Korea. In July to September 2014, curvularia leaf blight developed on leaf blades of creeping bentgrass as small water-soaked lesions that subsequently turned into dark-colored, necrotic spots. The spots were expanded and became gray, grayish-brown, or light brown, circular to oblong lesions with purple to dark brown borders that often were surrounded by a yellow halo. The necrotic lesions coalesced, became irregular in shape and caused tip or complete blighting of the leaves. Blighted leaf blades appeared grayish-white to tan. The fungus was identified by morphological characters and 16S rDNA sequencing as C. trifolii. Conidia of the pathogen were short, with predominantly 3-septa, straight or often curved, with end cells frequently paler than intermediate cells. Size of the 3-septate conidia in culture are $26{\sim}28{\times}11{\sim}12{\mu}m$. Pathogenicity of the fungus was proved by artificial inoculation on the host. This is the first report of C. trifolii causing leaf blight on creeping bentgrass in Korea.