• 제목/요약/키워드: D.P.R.K

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수도에 대한 완효성비료 METAP의 비효시험(1972) (Studies on the Controlled Release Fertilizer METAP Application on Paddy Rice (1972))

  • 이은웅;안수봉;이문희;이주열;송남현;권순목;김칠용;최병초;정현식;조병옥;이일주;박창서;고춘산;박건호;정성채;정환수;이희덕;박성태;이한생;최승락
    • 한국작물학회지
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    • 제13권
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    • pp.107-118
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    • 1973
  • 완효성 비료로서 METAP이 수도의 생육 수량 및 그 구성요소에 미치는 영향을 검토하고 그 효과를 단비와 비교하고자 농촌진흥청산하 3개작물시험장과 7개 농촌진흥원에서 동일한 설계하에서 일련의 시험을 실시하였다. METAP의 효과는 토양의 물리, 화학적 성질, 시용시기, 기상조건, 품종 및 재배법에 따라서도 다른 것 같으며 각 시험장에서 얻은 결과를 요약하면 다음과 같다. 1. 사질토에서 METAP의 시용은 수수를 증가시켜 수량이 증가하였으며 분시가 전량기비시용보다 효과가 좋았다. 그러나 해성토, 배수불량한 토양 및 비옥한 토양에서는 단비시용과 차이가 없었다. 2. 등숙에 요하는 온도가 높고, 조식에서 다수성인 품종(통일)을 비식하고 출수전후에 일조가 부족하고 온도가 낮으면 METAP시용이 등숙률 향상이나 1,000 입중을 증가시키지 못한다.

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디메틸아미노안트라퀴논계 분산염료와 아조계 모노클로로트리아진형 반응염료에 의한 P/C혼방직물의 일단계 날염에 있어 고착거동 (Fixing Behaviors of Dimethylamino Anthraquinone Disperse Dyes and Monochlorotriazinyl Azo Reactive Dyes on P/C Blended Fabrics in One-Step Printing)

  • 박건용;서기성
    • 한국염색가공학회지
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    • 제19권3호
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    • pp.18-25
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    • 2007
  • The fixing behaviors of anthraquinone disperse dyes containing dimethylamino substituent, such as C. I. Disperse Violet 26(D.V.26) and C. I. Disperse Blue 14(D.V.14), or containing diamino substituent, such as C. I. Disperse Blue 73(D.B.73), and monochlorotriazinyl azo reactive dyes, such as C. I. Reactive Orange 13(R.O.13), C. I. Reactive Red 3(R.R.3). C. I. Reactive Yellow 2(R.Y.2) on polyester/cotton blend(P/C) fabrics were examined for the one-step printing of P/C fabrics. The high temperature steaming of $175^{\circ}C$ is the most satisfactory fixing method for P/C one-step printing with above disperse and reactive dyes among the four different fixing methods: $175^{\circ}C$ steaming, $102^{\circ}C$ steaming${\rightarrow}175^{\circ}C$ steaming, $190^{\circ}C$ thermosol, $102^{\circ}C$ steaming${\rightarrow}190^{\circ}C$ thermosol. $190^{\circ}C$ thermosol is unfit to fix R.R.3 and R.Y.2 whose heat stability is poor. It was found that D.V.26 and D.B.14 containing dimethylamino substituent are unstable for heat and alkali, but D.B.73 is stable for them to print P/C blend fabrics with R.O.13 which is also stable for heat. Therefore we found that D.B.73, R.O.13 and a pair of D.B.73 and R.O.13 were very suitable for one-step printing of P/C blend fabrics.

P.W.R 형(型) 원자로(原子爐)의 증기발생기배수(蒸氣發生器排水)의 Ion 교환처리(交換處理) 연구(硏究) (Traitements sur $R\'{e}sines$ des Euax de Purge de $G\'{e}n\'{e}rateur$ de P. W. R. $Condition\'{e}es$ $\`{a}$ L' Ammoniaque)

  • 이상훈;박상훈
    • Journal of Radiation Protection and Research
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    • 제2권1호
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    • pp.24-30
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    • 1977
  • P.W.R. 형 원자로 증기발생기에서 발생되는 배수는 방사성 물질에 의하여 오염된다. 일반적으로 이 원자로의 증기발생기에 공급되는 급수는 'Phosphate'로 pH를 조절했으나 근래에는 'Ammonia' 조절방법이 선진제국에서 각광을 받고 있는 실정인 바 이는 약알카리로 pH를 조절하여 장치의 부식을 방지하기 위함이다. 본 실험에서는 이온 교환 수지탑을 이용하여 'Ammonia'로 조절된 배수를 처리하는 실험을 하였는 바, Acid Form의 Carboxylic, Cationic 몇 Anionic Ion Exchange Resinces Columns의 직열상태로 운전하였을 시 $^{137}Cs$$^{90}Sr$의 제염계수(Decontamination Factor)가 가장 높은 값을 나타낼 수 있으며 또한 그 처리능력이 가장 양호한 편으로 판명되었다.

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W CMP 공정에서 abrasive size 와 shape 영향성 (The effect of abrasive size and shape on W CMP)

  • 박준상;박정헌;이재동;홍창기;조한구;문주태;류병일
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2004년도 하계학술대회 논문집 Vol.5 No.1
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    • pp.243-246
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    • 2004
  • W CMP 공정에서 abrasive 의 size 및 shape 에 따른 CMP 거동에 대해 관찰하였으며, 주요 제거 막질인 W 막질과 stopping layer 로 사용되는 Oxide 막질에 대한 압력(P)과 상대 속도(V) 영향성을 관찰하였다. CMP 제거량이 입자의 size 변화에 의존한다는 기존의 이론과는 달리 응집도(aggregate ratio) 변화가 주요 변수임을 밝혀 내었다. 한편, 각 막질에 대한 P,V 영향성 평가를 통해, 변형된 Prestonian equation 이 abrasive size 및 shape 에 상관없이 W 막질의 제거 거동을 설명하는데 중요한 역할을 수행함을 보였다. 그렇지만, W CMP 공정에서 stopping layer 로 사용되는 oxide 막질의 거동을 설명하는 데에는 어려움이 있었으며, 특히 P,V 에 의한 비선형적 removal rate(RR) 거동발생으로 인해 기존의 이론치와는 많은 차이를 나타내었다. 또한, abrasive size 와 shape 에 따라서도 복잡한 거동을 나타낸다.

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Anilinolysis of Diphenyl Thiophosphinic Chloride and Theoretical Studies on Various R1R2P(O or S)Cl

  • Dey, Nilay Kumar;Han, In-Suk;Lee, Hai-Whang
    • Bulletin of the Korean Chemical Society
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    • 제28권11호
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    • pp.2003-2008
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    • 2007
  • The aminolysis of diphenyl thiophosphinic chloride (2) with substituted anilines in acetonitrile at 55.0 oC is investigated kinetically. Kinetic results yield large Hammett ρX (ρnuc = ?3.97) and Bronsted βX (βnuc = 1.40) values. A concerted mechanism involving a partial frontside nucleophilic attack through a hydrogen-bonded, four-center type transition state is proposed on the basis of the primary normal kinetic isotope effects (kH/kD = 1.0-1.1) with deuterated aniline (XC6H4ND2) nucleophiles. The natural bond order charges on P and the degrees of distortion of 42 compounds: chlorophosphates [(R1O)(R2O)P(=O)Cl], chlorothiophosphates [(R1O)(R2O)P(=S)Cl], phosphonochloridates [(R1O)R2P(=O)Cl], phosphonochlorothioates [(R1O)R2P(=S)Cl], chlorophosphinates [R1R2P(=O)Cl], and chlorothiophosphinates [R1R2P(=S)Cl] are calculated at the B3LYP/ 6-311+G(d,p) level in the gas phase.

Stimulative and Sedative Effects of Essential Oils upon Inhalation in Mice

  • Lim, Won-Churl;Seo, Jeong-Min;Lee, Chun-Il;Pyo, Hyeong-Bae;Lee, Bum-Chun
    • Archives of Pharmacal Research
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    • 제28권7호
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    • pp.770-774
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    • 2005
  • This study investigated the stimulative or sedative effects of inhaling fragrant essential oils (EOs) by using a forced swimming test (FST) with mice. This behavioral test is commonly used to measure the effects of antidepressant drugs. The inhalation by mice of EOs, such as ginger oil (p<0.05), thyme oil (p<0.05), peppermint oil (p<0.05), and cypress oil (p<0.01) resulted in 5% to 22% reduction of immobility. The same results were achieved when over-agitation was artificially induced in the mice by an intraperitoneal injection of caffeine (a psycho-stimulant). In contrast, inhalation of some EOs by the mice resulted in increased immobility. To evaluate more correctly the sedative effects of EOs, the immobility of over-agitated mice induced with caffeine was ascertained after the inhalation of various EOs. Inhalation of lavender oil (p<0.01) and hyssop oil (p<0.01) increased the immobile state in mice that were treated with caffeine. The results of this study indicate that the inhalation of essential oils may induce stimulative or sedative effects in mice.

Solvent Effect on the Nature of the Metallamacrocycles Formed: Formation of Octanuclear and Dodecanuclear Manganese Metalladiazamacrocycles

  • John, Rohith P.;Lee, Kyung-Jin;Lee, Kyung-Jae;Park, Mi-Ra;Lah, Myoung-Soo
    • Bulletin of the Korean Chemical Society
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    • 제28권11호
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    • pp.2009-2014
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    • 2007
  • The aminolysis of diphenyl thiophosphinic chloride (2) with substituted anilines in acetonitrile at 55.0 oC is investigated kinetically. Kinetic results yield large Hammett ρX (ρnuc = ?3.97) and Bronsted βX (βnuc = 1.40) values. A concerted mechanism involving a partial frontside nucleophilic attack through a hydrogen-bonded, four-center type transition state is proposed on the basis of the primary normal kinetic isotope effects (kH/kD = 1.0-1.1) with deuterated aniline (XC6H4ND2) nucleophiles. The natural bond order charges on P and the degrees of distortion of 42 compounds: chlorophosphates [(R1O)(R2O)P(=O)Cl], chlorothiophosphates [(R1O)(R2O)P(=S)Cl], phosphonochloridates [(R1O)R2P(=O)Cl], phosphonochlorothioates [(R1O)R2P(=S)Cl], chlorophosphinates [R1R2P(=O)Cl], and chlorothiophosphinates [R1R2P(=S)Cl] are calculated at the B3LYP/ 6-311+G(d,p) level in the gas phase.

STUDIES OF ACNE TREATMENT USING ORIENTAL HERBS(New Approach to select anti-acne agents)

  • Nam, Chun-Ja;Han, Y.G.;Kim, S.J.;Kim, J.H.;Oh, J.Y.;Park, J.W.;Lee, H.
    • 대한화장품학회지
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    • 제25권4호
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    • pp.111-121
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    • 1999
  • Acne vulgaris, the most common skin disease. can be formed as only a few comedons or severe inflammatory lesions. The pathogenesis of acne involves various factors; excessive androgen, excessive sebum production, abnormal alteration of follicular epithelium, proliferation of Propionibacterium acnes, and inflammation. We investigated acne therapy using oriental herbs described in the Korean traditional medical book(Dong-ui-bo-gam). Oriental herbs(Angelica daurica, Arctium lappa, Coptidis rhizoma, and Glycyrrhiza glabra) were chosen based on their respective property of sebum control, anti-inflammatory activity, and anti-bacterial activity. We examined the effect of acne treatment, in terms of chemotactic inhibition, lipogenesis inhibition, and anti-bacterial activity for P. acnes. 1. Neutrophil chemotaxis assay; P. acnes secrete chemotactic factors and other pro-inflammatory extracellular products. Neutrophil chemotactic activity of P. acnes was measured by 48-well chemotaxis method. Angelica daurica clearly suppressed chemotactic activity of P. acnes. 2. Using sebaceous gland of hamster ear lipogenesis assay; Sebaceous lipogenesis was measured using ear biopsies by incubation or $C^{14}$-acetate in culture media. The $C^{14}$-labeled lipids were extracted and determined by liquid scintilation counting. Coptidis rhizoma markedly inhibited sebum production. 3. Anti-bacterial assay for P. acnes(MIC test); Glycyrrhiza glabra showed anti-bacterial activity. P. acnes did not develop resistance against Glycyrrhiza glabra. Retinoids are effectively to inhibit sebum production and regulate follicular keratinization process, with little anti-inflammatory activity. Angelica daurica suppressed neutrophil chemotaxis, Coptidis rhizoma inhibited sebum production, and Glycyrrhiza glabra showed anti-bacterial activity against P. acnes. A combined formulation of Angelica daurica, Coptidis rhizoma. and Glycyrrhiza glabra is expected to provide effective acne treatment.

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Individual role of manufacturing steps in PDP system contamination and their specific impact on ultimate operational parameters

  • Riva, Mauro;Bonucci, Antonio;Tominetti, Stefano;Carretti, Corrado;Han, Yong-Gyu;Hong, Sung-Hee;Choi, Eun-Ha
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2008년도 International Meeting on Information Display
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    • pp.1448-1451
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    • 2008
  • In this paper we investigate, on the basis of experimental data, the correlations between contamination issues occurring during production process steps and final PDP operational parameters: these reciprocal relations are the result of dynamic equilibria established within the PDP system, amongst residual gases and sorbed species interacting with heat, ions and photons.

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