• 제목/요약/키워드: five phases

검색결과 427건 처리시간 0.025초

유수실이 2개인 유공케이슨의 파력 산정에 관한 실험적 연구 (Experimental Investigation for Evaluating Wave Forces on Perforated Caisson with Two Wave Chambers)

  • 오상호;지창환;이달수
    • 한국해안·해양공학회논문집
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    • 제27권6호
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    • pp.443-451
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    • 2015
  • 유수실을 두 개 가지는 유공케이슨에 작용하는 파력 산정식은 아직까지 없다. 이 연구에서는 이러한 이중유수실 케이슨 모형에 작용하는 파력을 측정한 수리실험 자료 분석 결과를 제시하였다. 실험결과로부터 세 가지 연직벽체에 작용하는 파력의 첨두값에 연관된 다섯 가지 파의 위상에 따른 파력의 변화 양상을 명확하게 규명할 수 있었으며, 이로부터 Takahashi and Shimosako (1994)와 유사한 형태의 이중유수실 파력보정계수를 산정하였다. 이 결과는 향후 추가 실험 및 현장 실무에의 적용을 통해 검증될 필요가 있다.

Effect of Seed Collection Stage and Temperature on Germination of Deutzia paniculata Nakai, the Korea Native Species

  • Jeong, Mi Jin;Choi, Go Eun;Ghimire, Balkrishna;Lee, Ha Yan;Jung, Ji Young;Choi, Myung Suk;Ku, Ja Jung;Lee, Kyung Mee;Lee, Cheul Ho;Suh, Gang Uk;Son, Sung Won
    • 원예과학기술지
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    • 제34권3호
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    • pp.372-382
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    • 2016
  • In this study, we investigated the effect of seed collection stage and alternating temperature on the germination of Deutzia paniculata (Hydrangeaceae). The seeds were collected from naturally growing D. paniculata populations in Mt. Palgong, Gyeonsangbuk-do, Korea every two weeks over a three month period from August through October, 2014, totaling five collections. We examined seed characteristics such as seed size (length and width) and weight, and germination percentages for each collection stage under four different germination temperature regimes. We also examined germination after 30 and 60 days of cold moist stratification. Each collection phase had a different germination percentage and the lowest germination percentage was observed in the seeds from phase I (average GP of 15.7%). The germination percentage was similar at the later collection phases and in the higher temperatures suggesting that later collection times and higher temperatures are optimal for D. paniculata germination. We found that the optimum collection stage with high viability and germination percentage of for D. paniculata was during the middle of the September.

학령전기 아동 성장발달의 PBL 모듈 개발 (Development of a Problem-Based Learning Module for Preschoolers' Growth & Development)

  • 이명남;손해경
    • 한국콘텐츠학회논문지
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    • 제18권11호
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    • pp.393-405
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    • 2018
  • 문제중심학습(PBL)은 간호 임상실습 시 간호 지식, 기술과 태도를 통합하는 학습자 중심의 교육이다. 본 연구는 간호학 교과과정 가운데 학령전기 아동 성장발달의 PBL 모듈을 적용하기 위한 사전 연구이다. 이에 본 양적연구는 PBL 모듈을 Dick과 Carye의 프로그램 개발 과정(계획, 개발, 적용, 평가 단계)에 따라 개발하였고 2학년 간호대학생을 대상으로 구조화된 설문지를 활용하여 그 효과를 평가하였다. PBL 모듈은 각 팀 당 4-5명의 학생이 약 40분 정도 참여하였다. 수집된 자료는 기술통계, t-test, 내용분석을 하였다. 그 결과 간호대학생의 메타인지 수준이 유의하게 증가하였고, 팀 효능감은 모듈 참여 전후로 유의한 차이가 없었으며, 사후 학습만족도가 높은 수준으로 나타났다. 간호대학생은 PBL 모듈 참여 후 학령전기 아동성장발달에 관한 지식 및 문제해결능력을 습득하였고 PBL 참여 시 팀워크에 대해 만족한다고 응답하였다. 따라서 본 연구 결과는 간호 교과과정 내 PBL 모듈의 적용을 고려하기 위한 근거 자료를 제공하였다.

『본초승아반게(本草乘雅半偈)』의 불교(佛敎) 관련 설명에 대한 고찰 (A Study on the Buddhist Contents in the Bencaoshengyabanji)

  • 安鎭熹;尹基領;南杰
    • 대한한의학원전학회지
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    • 제34권4호
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    • pp.27-64
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    • 2021
  • Objectives : This paper examined the Buddhist contents within the text, Bencaoshengyabanji(本草乘雅半偈). Methods : Medicinals that were searched through Buddhist vocabulary were examined. Results & Conclusions : Medicinals that quoted the Lengyanjing were related to the Water-Fire interaction, food and medicine, and karma, while those that quoted the Shidian were related to 無上道, 去惡殺蟲, 樞機滑利, and 生生之氣. Those related to the Great Earth of the Four Elements corrected the body's form based on Metal Qi, while those related to the Great Water were connected to the circulation of water dampness. Those related to the Great Fire were deeply related to Yang Qi, and those related to the Great Wind were connected to Wind control. Of the Four Origins, medicinals that were viviparous lowered Qi, while those that were oviparous were related to communicating Shen, treating diseases of the Conception Vessel, and the closing and opening of day and night. Medicinals originating from dampness were related to urination and fluid management, while those of metamorphosis were related to the process of Qi. Those related to emptiness were related to the communication of the Qi system, while those related to 六根六塵 were connected to calming the Shen and strengthening the will, and smoothing the nine orifices. Medicinals related to 圓通 were used for improving eyesight and hearing and controlling the closing and opening. Lu Zhi-yi's analysis of medicinals through the Lengyanjing is original in that it suggested a new perspective other than previous theories on pharmacology which were based on the Yin-Yang and Five Phases and Rising/Lowering/Floating/Sinking theories, but also pedantic and exaggerated. The Bencaoshengyabanji is a unique text on medicinals which analyzed each medicinal under Buddhist influence. However, it also followed the contexts of other previous texts on medicinals, and influenced Zou shu.

개인정보 유출 시 통지.신고 프레임워크 및 가이드라인 (A Framework and Guidelines for Personal Data Breach Notification Act)

  • 이충훈;고유미;김범수
    • 정보보호학회논문지
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    • 제21권5호
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    • pp.169-179
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    • 2011
  • 2011년 9월 시행되는 개인정보 보호법에 따르면, 개인정보처리자는 개인정보 유출에 대한 추가적인 법적 책임을 져야 한다. 특히 개인정보 유출 시, 개인정보처리자는 정보 주체에게 개인 정보가 유출된 사실을 의무적으로 통지를 하여야 한다. 본 연구에서는 미국 46개주에서 실시하고 있는 현행 유출 통지법과 기타 국가의 주요 사례를 분석하여, 유출 통지 프레임워크를 제시한다. 개인정보 유출통지 프레임워크는 (1) '통지의 대상이 되는 개인정보', (2) '통지 주체', (3) '통지 시점', (4) '통지 내용', (5) '통지 방법' 등 다섯 가지 중요 요소로 구성된다. 그리고 새로운 유출 통지 프레임워크에 기초하여, 향후 적절한 가이드라인을 수립하기 위한 방향을 제안한다.

Bactericidal Efficacy of Oxidized Silver against Biofilms Formed by Curtobacterium flaccumfaciens pv. flaccumfaciens

  • Harding, Michael W.;Marques, Lyriam L.R.;Allan, Nick;Olson, Merle E.;Buziak, Brenton;Nadworny, Patricia;Omar, Amin;Howard, Ronald J.;Feng, Jie
    • The Plant Pathology Journal
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    • 제38권4호
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    • pp.334-344
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    • 2022
  • Bacterial wilt is a re-emerging disease on dry bean and can affect many other crop species within the Fabaceae. The causal agent, Curtobacterium flaccumfaciens pv. flaccumfaciens (CFF), is a small, Gram-positive, rod-shaped bacterium that is seed-transmitted. Infections in the host become systemic, leading to wilting and economic loss. Clean seed programs and bactericidal seed treatments are two critical management tools. This study characterizes the efficacies of five bactericidal chemicals against CFF. It was hypothesized that this bacterium was capable of forming biofilms, and that the cells within biofilms would be more tolerant to bactericidal treatments. The minimum biocide eradication concentration assay protocol was used to grow CFF biofilms, expose the biofilms to bactericides, and enumerate survivors compared to a non-treated control (water). Streptomycin and oxysilver bisulfate had EC95 values at the lowest concentrations and are likely the best candidates for seed treatment products for controlling seed-borne bacterial wilt of bean. The results showed that CFF formed biofilms during at least two phases of the bacterial wilt disease cycle, and the biofilms were much more difficult to eradicate than their planktonic counterparts. Overall, biofilm formation by CFF is an important part of the bacterial wilt disease cycle in dry edible bean and antibiofilm bactericides such as streptomycin and oxysilver bisulfate may be best suited for use in disease management.

『동의보감(東醫寶鑑)』에 나타난 분제(分劑) 제약법(製藥法)에 관한 고찰 (A Study on the Divisional Pharmaceutical Method in 『Donguibogam』)

  • 尹基領;金鍾鉉
    • 대한한의학원전학회지
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    • 제34권2호
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    • pp.45-62
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    • 2021
  • Objectives : To study the characteristics and meaning of the division pharmaceutical method in the Donguibogam through analysis of formulas that apply such method. Methods : Each formula applying the division method within the Donguibogam was analyzed Results & Conclusions : In the Donguibogam, medicinals to which the division pharmaceutical method was applied were baizhu[白朮], cangzhu[蒼朮], zhiqiao[枳殼], wuzhuyu[吳茱萸], xiangfuzi[香附子], chuanlianzi[川練子], huangbo[黃柏], etc. Formulas where this method was used were few, while the four methods that were used, together with the Center represents the principle of the five phases. The formulas that applied the division method usually did not adopt the tablet or decoction form, which means they were meant to treat slowly, treating deficiency or stagnation diseases due to problems in the middle-lower body such as the Spleen, Liver and Kidney. It could be said that compared to other more common formulas, this was a unique method. The division pharmaceutical method allows for usage of a wider variety of processing methods compared to single ingredient formulas, while there is lower chance of interference among the different types of processing. Another benefit is that the properties of the main medicinal ingredient could be preserved as much as possible. In addition, the division method allows for the main ingredient and the processed ingredient to interact exclusively, after which the processed medicinal is eliminated leaving only the main ingredient. This allows for maximum improvement of the main ingredient. The division method includes the principles of formula composition as well, whose concept could be positioned between single ingredient formulas and common formulas.

초전도 선재용 완충층의 결정성장 연구 (Epitaxial growth of buffer layers for superconducting coated conductors)

  • 정국채;유재무;김영국
    • 한국초전도ㆍ저온공학회논문지
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    • 제9권3호
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    • pp.5-8
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    • 2007
  • All three buffer layers of $Y_2O_3$, YSZ, and $CeO_2$ have been deposited on the biaxially textured metal substrates using rf-sputtering method, The first 50-70nm thick $Y_2O_3$ films were grown epitaxially on biaxially textured metal substrates as a seed layer and followed by the diffusion barrier ${\sim}100nm$ thick YSZ and subsequent capping layer ${\sim}200nm$ thick $CeO_2$ deposited epitaxially on top of $Y_2O_3$ seed layer. The epitaxial orientation of all three layers were all (100) grown with rocking curve Full Width at Half Maximum(FWHM) of $4-5^{\circ}$ and in plane phi-scan FWHM of $6-8^{\circ}$ using X -ray diffraction analysis. The NiO phases formed during the $Y_2O_3$ seed layer deposition seem to degrade the crystallinity and roughen the surface morphology of the following layer observed by AFM(Atomic Force Microscopy). The buffered tapes were used as substrates for long length YBCO coated conductors with high critical current density $J_c$. The five multi-turn of metal tapes was employed to increase the thickness of films and production rate to compensate the low growth rate of rf-sputtering method.

Genome wide association study for growth in Pakistani dromedary camels using genotyping-by-sequencing

  • Sajida Sabahat;Asif Nadeem;Rudiger Brauning;Peter C. Thomson;Mehar S. Khatkar
    • Animal Bioscience
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    • 제36권7호
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    • pp.1010-1021
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    • 2023
  • Objective: Growth performance and growth-related traits have a crucial role in livestock due to their influence on productivity. This genome-wide association study (GWAS) in Pakistani dromedary camels was conducted to identify single nucleotide polymorphisms (SNPs) associated with growth at specific camel ages, and for selected SNPs, to investigate in detail how their effects change with increasing camel age. This is the first GWAS conducted on dromedary camels in this region. Methods: Two Pakistani breeds, Marecha and Lassi, were selected for this study. A genotyping-by-sequencing method was used, and a total of 65,644 SNPs were identified. For GWAS, weight records data with several body weight traits, namely, birthweight, weaning weight, and weights of camels at 1, 2, 4, and 6 years of age were analysed by using model-based growth curve analysis. Age-specific weight data were analysed with a linear mixed model that included fixed effects of SNP genotype as well as sex. Results: Based on the q-value method for false discovery control, for Marecha camels, five SNPs at q<0.01 and 96 at q<0.05 were significantly associated with the weight traits considered, while three (q<0.01) and seven (q<0.05) SNP associations were identified for Lassi camels. Several candidate genes harbouring these SNP were discovered. Conclusion: These results will help to better understand the genetic architecture of growth including how these genes are expressed at different phases of their life. This will serve to lay the foundations for applied breeding programs of camels by allowing the genetic selection of superior animals.

경부고속철도 대구~경주~울산~부산 구간 노선 및 역사 선정의 합리성에 관한 연구 (A Study on the Rationality for Choosing Proper Routes & Stations of the KTX Gyeongbu Line (Daegu, Gyeongju, Ulsan and Busan))

  • 김성득
    • 대한토목학회논문집
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    • 제30권2D호
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    • pp.181-190
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    • 2010
  • 경부고속철도 대구~부산 구간에 대해 그 노선과 역사 선정의 과정에서 일어난 갈등을 분석하여 대규모 국책사업의 효과적인 노선결정 방안을 제시함이 본 연구의 목적이다. 본 연구에서는 경부고속철도 대구~부산 구간 건설과정에 일어났던 쟁점을 대상으로 정책과정과 갈등을 분석하였다. 그 쟁점 다섯 가지는 1) 계획 초기의 대구~경주~부산 노선 선정, 2) 계획 발표 이후에 쟁점사항으로 떠올랐던 새로운 경주경유 노선과 역사의 선정, 3) 경부고속철도의 2단계 건설계획 결정, 4) 경부고속철도 울산역 추가 설치와 5) 양산 천성산 노선의 분쟁이다. 각 쟁점에 대한 분석은 기술적, 경제적, 법적, 사회적 및 실질적 합리성에 대해서 다루었다. 이 분석을 바탕으로, 본 연구에서는 광역교통로 노선 선정에 대한 합리적인 모델을 제시하였다. 대규모 사업은 관련 기술검토와 경제성분석을 우선 계량적으로 종합평가하고, 사회적 합의를 통해 갈등을 예방하여야 할 것이다.