• 제목/요약/키워드: Colorless

검색결과 319건 처리시간 0.026초

Potentials for Biological Control of Blue Stain on Woods Caused by Ophiostomatoid Fungi

  • Lee, Jong-Kyu;Oh, Eun-Sung
    • The Plant Pathology Journal
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    • 제16권4호
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    • pp.200-205
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    • 2000
  • Biological control of blue stain fungi, such as Ophiostoma and Leptographium spp., that reduce the quality of logs and cause economic losses in wood product industry, was carried out in laboratory and field trials by a colorless strain of Ophiostoma quercus, BSFcs-1. Inoculation of pine wood chips with the colorless strain 1 wk before inoculating wild-type strain demonstrated that BSFcs-1 colonized wood chips and excluded blue stain fungi from being established. Efficacy of BSFcs-1 was compared with colorless strain of O. piliferum, which is commercially available under the trade name of Cartapip. Inoculation of pine wood logs with the colorless strain 1 wk before inoculating wild-type strain of blue stain in isolated wood chips, while O. quercus and O. floccosum colonized 0% and 17%, respectively. Simultaneous inoculation of logs with the colorless and wild-type strains resulted in decreased colonization (28%) by BSFcs-1, but increased colonization by O. quercus (185) and O. floccosum (29%). On the other hand, BSFcs-1 and wild-type strain alone colonized 75% and 71%, respectively. Treatment of the surface of log ends with mycelial suspension of BSFcs-1 after cutting also showed good control of blue stain fungi in a pine forest stands.

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위령선의 성분연구 제2보 Clematis brachyura Maxim의 flavone에 대하야

  • 허검;박수선
    • 약학회지
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    • 제2권1_2호
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    • pp.11-15
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    • 1953
  • Two flavons, which are a new flavon (the Authors are going to call it "CLEMATISIN") and a yellow crystalline flavon, are isolated from leaves of Clematis brachura Maxim. Clamatisin : A colorless needle crystal which has a Slightly sweet taste, mp 225 .deg.C (decomp). It is positive (Cherry red) for the Mg-HCl(Hg) reaction and is positive (purple) for the $FeCL_{3}$ reagent. It is soluble easily in methanol, ether, acetone, prydine, ethylacetate, hot water and alkali-solutions. It is soluble slightly in cold water and is insoluble in chloroform, benzene and toluence. According to the results of elementry analysis and molecular weight determination the formula of clematisin agrees with $C_{18}H_{18}O_{7}$ when dried at $80^{\circ}C$, crystalline clematisin (from water) contains one molecule of crystalline water. The following derivatives are prepared ; Clematisin-oxim; a colorless needle crystal, mp 215-216 .deg.C, Clematisin methylate; prepared by diazomethan. mp 191-$192^{\circ}C$ a colorless needle crystal. Acethylmethylate; a colorless powder, It is not sharp in melting point and melts at approximately $215^{\circ}C$, Yellow Crystalline Flavon; mp 285-$286^{\circ}C$ (dexo-mp.), yellow needle crystal. It has a slightly sweet teste and shows positive reaction Acetate; a colorless needle crystal, mp $168^{\circ}C$.

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손상모발의 염색 후 무색 헤어매니큐어 관리시점에 따른 형태적 변화 (The Metamorphosis by Management Term of Colorless Hair Manicure after Dyeing Treatment on Damaged Hair)

  • 최정숙;김혜정
    • 한국패션뷰티학회지
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    • 제5권2호
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    • pp.5-11
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    • 2007
  • The results of study for colorless hair manicure, which is well known for its useful point and supplement damaged hair glossy, luster, elastic and soft one are as follows. Hair protection effect by the management time of colorless hair manicure products, as below. When it comes to dyed hair group's hair surface condition. both level 3 and level 6 hairs cuticle changed to be irregular. And lose of cuticle has been observed with a fact that the space between cuticles are not clear. In case of manicuring, manicuring 2 weeks after dyeing is better complemented surface damage than manicuring right after dyeing. So, in case of making cuticle morphologic of good hair quality in manicuring dyed hair, it's more effective to manicure right after dyeing to both level 3 and level 6 hair.

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코팅된 무색 합성 모이사나이트의 특징 (Characterization of coated colorless synthetic moissanite)

  • 최현민;김영출;장한수;석정원
    • 한국결정성장학회지
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    • 제32권1호
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    • pp.7-11
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    • 2022
  • 한미보석감정원은 최근에 5개의 투명한 합성 모이사나이트를 검사했다. 그 샘플들은 라운드 브릴리언트 컷의 무색, 핑크, 황색, 청색, 적색 컬러와 0.93~0.96 ct 중량을 가지고 있었다. FT-IR과 Raman 분석 결과 합성 모이사나이트임을 확인하였고, 확대검사 결과 무색을 제외한 나머지 샘플에서 코팅의 흔적이 발견되었다. EDXRF 분석 결과 무색 샘플을 제외한 모든 샘플의 코팅부분에서 Ca, Ti, Co의 미량원소가 검출되었다. 무색 샘플의 Raman 분석에서 탄소 원자의 sp3 bonding에 의해 생성되는 1332 cm-1 또는 graphite와 관련된 sp2 bonding에 의해 생성되는 ~1550 cm-1는 발견되지 않았다. 무색 샘플의 SEM 이미지에서도 코팅의 흔적은 발견되지 않았으나, TEM 이미지에서 3~8 nm의 코팅층의 존재가 발견됐다. EDX line 프로파일과 EDX elements map을 통해 무색 샘플의 코팅층을 구성하는 원소는 C, Si, O로 추정된다.

고온고압법에 의한 Type II, Type I aB 갈색 다이아몬드의 색향상 (Color Enhancement of the Type II and Type I aB Brown Diamonds into Colorless by HPHT Process)

  • 송정호;송오성
    • 한국세라믹학회지
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    • 제49권3호
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    • pp.221-225
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    • 2012
  • It is possible to enhance the color of the natural diamond with a high pressure high temperature(HPHT) process. We employed a pyrophyllite tube cell and cubic press apparatus for HPHT treatment on the brown colored Type II (5.6 GPa/ $1700^{\circ}C$/ 52 min), and Type I aB(5.6 GPa/ $1650^{\circ}C$/ 30 min) diamond samples. We investigated the microstructure, Types, fluorescence, properties of the diamonds with an optical microscopy, FT-IR, photoluminescence(PL) spectroscopy, Diamond-View, and micro-Raman spectroscopy. Two tinted brown diamonds changed into colorless just after the HPHT process. Optical microscopy showed that no crack and significant inclusion evolution occurred during the HPHT process except the small graphite spot appeared in Type I aB sample. FTIR spectrum confirmed that no Type, amber center, and platelet defect change with the HPHT treatment. Diamond-View could not distinguish the HPHT treated diamonds from the naturals. PL spectroscopy showed that N3 and H3 color centers remained even after HPHT process. Consequently, we successfully changed the color of diamonds into colorless by 5.6 GPa HPHT process.

유기광전도재료 (OPC)용 비대칭 Squarylium계 색소의 합성과 광안전성 (Syntheses and Photostability of Unsymmetrical Squarylium Dyes for Organic Photoconductors(OPC))

  • 김성훈
    • 한국인쇄학회지
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    • 제12권1호
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    • pp.133-143
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    • 1994
  • A new photochromic spiroxazine dye having a pyridinium s-triazine moiety has been prepared. It shows a reversible photochemical color change from colorless to reddish-purple in ethanol solution. In ethanol solution the half life time of the open form was 150sec, which was shortened by raising temperature. Silica-immobilized spiroxazine(6). Fine power of silica-immobilized spiroxazine was changed intensely blue from colorless by U.V. light or sunlight.

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The Influence of Oxygen on Czochralski Growth of Oxide Single Crystals

  • D. S. Chung;Park, B. H.
    • 한국결정성장학회:학술대회논문집
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    • 한국결정성장학회 1997년도 Proceedings of the 12th KACG Technical Meeting and the 4th Korea-Japan EMGS (Electronic Materials Growth Symposium)
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    • pp.179-181
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    • 1997
  • When grown the oxide single crystal including Li-ion, optimum oxygen condition is needed. Color and crack are caused in single crystal according too the change in the condition of the oxygen. LiTaO₃ crystals grown from off-composition of congruent melt composition under oxygen deficieny condition didn't generate any crack. LiNbO₃. LiTaO₃ crystals grown from congruent melt composition under optimum oxygen condition caused pale yellow color or colorless with no crack. Color gradually became colorless and generated cracks according to Oxygen excess.

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유연성 디스플레이 기판 소재용 투명성 폴리이미드의 합성 및 그의 나노복합화에 대한 연구 (Synthesis and Property of Colorless Polyimide and Its Nanocomposite for Plastic Display Substrate)

  • 마승락;김용석;이재흥;김정수;김인선;원종찬
    • 폴리머
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    • 제29권2호
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    • pp.204-210
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    • 2005
  • 플라스틱 디스플레이 기판용으로 사용하기 위하여 무색, 투명하면서 유연성, roll-to-roll 공정, 내열성과 저 열팽창계수 특성을 갖출 수 있는 폴리이미드에 대한 연구를 하였다. 3,3',4,4'-oxydiphthalic anhydride(ODPA), 4,4'-(hexafluoroisopropylidene)diphthalic anhydride (6FDA), sulfonyldianiline(3-SDA), aminophenoxybenzene(TPE-p, TPE-q, TPE-r)과 bis[4-(3-aminophenoxy)phenyl]sulfone(m-BAPS) 등을 사용하여 무색 투명한 폴리이미드를 합성하고 광학적 특성을 UV spectrophotometer, colormeter와 hazemeter를 이용하여 측정하였다. 열팽창계수(CTE)를 낮추기 위하여 층상실리케이트로 나노복합화하였다. 무색투명한 폴리이미드 필름은 440 nm에서 $89\%$ 이상의 광투과도와 yellow index(YI) 값이 7 이하의 우수한 광학 특성을 보였다. 나노복합화한 폴리이미드 필름은 층상실리케이트가 효과적으로 박리되어 층상실리케이트의 함유량이 증가함에 따라 열팽창계수가 감소하는 효과를 보였다.

모발의 염색관리 후 무색 헤어메니큐어의 관리시점에 따른 모발보호 효과 (The Effect by Colorless Hair Manicure Management after Dyeing Treatment on Damaged hair)

  • 김혜정;최정숙
    • 한국패션뷰티학회지
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    • 제4권2호
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    • pp.15-21
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    • 2006
  • 본 인구에서는 손상된 염색모발에 윤기와 광택, 탄력, 부드러움까지 보완할 수 있으며, 현장에서 가장 활용빈도가 높다고 인정되는 헤어매니큐어 종류 중 무색 헤어매니큐어를 선정하여 무색 헤어매니큐어 제품의 관리시점에 따른 모발 보호 효과에 대해 연구한 결과는 다음과 같다. 인장강 신도 level 3과 level 6의 모발 모두 염색 후 손상이 되면 모발의 강도와 신도에 모두에 영향을 미치는 것으로 나타났으며, 염색 후 즉시 매니큐어를 하는 것보다 염색 후 2주 뒤 매니큐어를 하는 것이 더 효과적인 것으로 나타났다. 따라서 level 3과 level 6 모발 모두 염색모발에 매니큐어 처리 시 모발의 질감을 좋게 함이 목적인 경우는 염색 후 즉시 매니큐어를 처리하는 것이 효과적이나, 모발의 물리적인 손상을 보완하기 위해서는 염색 후 2주 후에 매니큐어를 처리하는 것이 가장 효과적인 방법으로 판단된다.

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정상체중인과 비만인의 음료와 컵 색상에 따른 인지량의 차이에 관한 연구 (Difference in Volume Perception According to Beverage or Cup Color in Normal Weight and Obese College Students)

  • 이명옥;홍지원;장은재
    • 대한영양사협회학술지
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    • 제19권1호
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    • pp.25-33
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    • 2013
  • We examined the perception of volume in college students with a normal weight versus those students with obesity. College students were divided into a normal weight group (<23 body mass index, n=121) and an obese group (${\geq}23$ body mass index, n=110), The perception of volume was measured under different beverage colors (colorless, black, yellow, and blue) and cup colors (colorless, black, yellow, and blue) containing the same amount of liquid (150 ml). We found that the normal weight group perceived significantly more liquid in a cup with a blue beverage versus a colorless one. The obese group perceived significantly more liquid in a cup with a yellow or blue beverage versus a colorless one. In terms of cup color, the normal weight group perceived significantly more liquid in a black color cup compared to a blue color cup. However, there were no differences in perceived volume according to the color of cup among the obese group. There were no significant differences in the perceived volume between the normal and obese group under all conditions tested. In conclusion, beverage and cup color effects volume perception in normal weight students, while only beverage color effects volume perception in obese students. Therefore, controlling, the color of beverages and cups may help to control the consumption of drinks.