• 제목/요약/키워드: Vigor

검색결과 392건 처리시간 0.026초

현지외 보존을 위한 죽절초 종자의 건조 내성과 저장성 평가 (Desiccation Tolerance and Storage Behavior of Sarcandra glabra Seeds for Use in ex-situ Conservation)

  • 구다은;한심희;임은영;김진;구자정
    • 한국산림과학회지
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    • 제112권4호
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    • pp.442-450
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    • 2023
  • 본 연구는 죽절초의 현지외 보존 전략 수립을 위해 종자의 건조 내성과 저장성에 관한 정보를 얻고자 수행되었다. 이를 위해 죽절초 종자의 기본적인 발아 특성을 조사하고, 종자 함수율을 수준별로 조절하여 발아 특성 및 종자 침출수를 분석하였으며, 저장성 평가를 위해 저장 기간별 발아 특성을 조사하였다. 죽절초 종자의 탈종 직후 함수율은 32.8%였으며, 채취 직후의 종자는 함수율 4.8% 수준에서도 발아율 81.0%로 종자 활력과 종자세를 유지하였으나, 함수율 2.3%, 2.2%에서는 발아율이 각각 55.0%, 30.0%로 감소하였다. 반면, 저장된 종자는 함수율 18.6%에서 발아율이 93.3%로 높은 활력과 종자세를 유지하였으나, 함수율 5% 미만에서는 발아율이 20%이하로 활력과 종자세가 크게 감소하였다. 또한, 수준별로 건조한 종자의 침출수를 분석한 결과, 건조에 의해 발아 활력이 저하된 종자는 침출수의 전기전도도가 높게 나타났고, 침출수 내 K, Ca와 같은 무기질의 농도도 증가하였다. 결론적으로, 죽절초 종자는 난저장성 종자와 중간저장성 종자 사이의 건조 내성을 가지나, 노화 정도에 따라 건조 내성에 차이가 있고, 저장 수명이 짧은 단명종자로 판단된다.

램제트 엔진의 점화 천이에 관한 연구 (Ignition Transient Mechanism in an Entire Integrated Rocket Ramjet Engine)

  • 성홍계
    • 한국추진공학회지
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    • 제4권2호
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    • pp.12-20
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    • 2000
  • The numerical analysis, including chemical reaction of an entire ramjet engine is studied to understand the ignition transient mechanism and the dynamic characteristics of the Integrated Rocket Ramjet System comprehensively. Details of how a subsonic combustion environment is established from the supersonic ram air after removal of the inlet port cover, are examined during the ignition transient. Various physical processes are investigated systemically, including ignition, flame propagation, flame dynamics, and vorticity evolution.

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가잠에 있어서 이종강세에 대한 고찰 (Studies on the Hybrid Vigor in the Silkworm, Bombyx mori L.)

  • 김낙정
    • 한국잠사곤충학회지
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    • 제1권
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    • pp.5-8
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    • 1960
  • 가잠에 있어 교잡제1대가 실용상 유리한것은 1841년 Robinert씨가 처음 실험한 보고가 있었고 일본에 있어서는 1906년 외출구태랑씨가 구주관후 귀국즉시 일대잡종이 경제상 유리한 점을 주장하면서 일방으로는 국립잠업시험장에서 우선 시험하여 장려해온 결과 1912 년경부터 점차보급되어 기후 1920년경에는 사견의 전부가 일대잡종으로 전환되었다. 1917년 일본잠업시험장 보고에 의하면(총괄적보고) 1. 일반으로 사육일수는 원종의 어느편보다 또는 기평균식보다 단축한다. (중략)

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슬래쉬소나무의 화아원기(花芽原基) 형성(形成)의 생리학적(生理學的) 연구(硏究)(I) 당년지(當年枝)의 형태(形態)와 자화(雌花)의 착화(着花)와의 관계(關係) (Physiology of Strobilus Initiation in Slash Pine I. Ovulate Strobilus Production in Relation to Shoot Morphology)

  • 이경준
    • 한국산림과학회지
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    • 제46권1호
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    • pp.21-28
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    • 1980
  • 채종원(採種園)에서 18년생(年生) 접목묘(接木苗)인 슬래쉬 소나무를 대상(對象)으로 하여, 구과형성(毬果形成)과 가지의 형태학적(形態學的)인 상관관계(相關關係)를 조사했다. 춘기(春期)에 조사한 지당(枝當) 자화수(雌花數)와 상관관계가 가장 큰 것은 전년도(前年度) 신초지(新梢枝)의 지당(枝當) 엽중량(葉重量)이었다. ($R^2=+0.41$). 웅화수(雄花數)는 신초지(新梢枝)의 엽중량(葉重量)과 부(負)의 상관(相關)을 보여주었다. ($R^2=-0.21$). 웅화(雄花)에서 자화(雌花)로의 성전환(性轉換)은 그 가지의 생장력(生長力)(vigor)이 증가함에 따라서 촉진(促進)되었다. 자화(雌花)가 거의 착화(着花)되지 않는 개체목(個体木)의 토부수관(土部樹冠)에서 채취(採取)한 정아(頂芽)와, 자화(雌花)나 웅화(雄花)가 대량(大量)으로 착화(着花)한 개체(個体)의 정아(頂芽)로, 유관속 조직의 생장(生長)을 비교(比較)한 결과, 전자(前者)가 후자(後者)보다 훨씬 빨랐으며, 이는 자화(雌花)를 생산(生産)하지 않는 정아(頂芽)는 강(强)한 영양생장(營養生長)의 경향(傾向)을 나타냄을 뒷받침하는 것이다.

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재직자를 대상으로 한 패션교육훈련 프로그램 성과에 관한 연구: 자기효능감과 직무열의의 조절효과 (A Study on the Performance of Educational Fashion Training Program for Employed Learners: Moderating Effects of Self-efficacy and Job Engagement)

  • 이승민;박현희
    • 한국의류산업학회지
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    • 제20권5호
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    • pp.520-532
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    • 2018
  • This study examines whether any correlation exists amongst participative motivation in an educational fashion training program, participants' program satisfaction and performance. In addition, this study investigates the moderating effect of participants' self-efficacy and job engagement in the influence of participative motivation on program satisfaction. Questionnaire data from 212 employed learners who participated in one or more educational fashion training programs were analyzed. For the data analysis, SPSS 24.0 statistical package was used. The study results were as follows. First, the participative motives of the educational fashion training program were grouped into the following three factors: goal-oriented, learning-oriented, and organizational support. Second, learning-oriented participative motivation positively affected their program satisfaction. Third, higher program satisfaction led better program performance. Fourth, there was a significant difference in the magnitude of the effect of learning-oriented participative motivation on satisfaction according to self-efficacy. Fifth, there was a significant difference in the magnitude of the effect of goal-oriented participative motivation on satisfaction according to vigor. Even if the participative motivation in an educational fashion training program predicts the program satisfaction, the strength is changed by interacting with the self-efficacy and vigor. The results of the study provide various implications for educators or policy makers who are interested in educational fashion training program development.

노인의 기분측정을 위한 도구(Profile of Mood States, POMS)의 타당화에 관한 연구 (A Study on Verification of the Profile of Mood States(POMS) for Korean Elders)

  • 신윤희
    • 대한간호학회지
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    • 제26권4호
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    • pp.743-758
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    • 1996
  • This paper was done to verify the use of the Profile of Mood States (POMS) which was developed by McNair, Lorr, and Droppleman(1992) with modifications so that it is appropriate for Korean elders. Through the modified tool, it is possible to examine the mood of Korean elders and to contribute to the welfare of elders. The subjects were 370 elderly persons over 60 years old and the data for 319 persons(86%) were analyzed. The research tool was the POMS translated by Yun(1993) and corrected by the researcher. Data were collected between February 12 and April 9 in 1996 and analyzed using the SAS package. The result are as follows 1. Items with low Cronbach coefficient alpha which means low correlation with total items were removed. The items were removed : friendly, tense, considerate, relaxed, sympathetic, resentful, good-natured, rebellious, trusting, carefree. 2. Overlapped or ambiguous items were discussed by colleagues and elders through verification of con-tent-validity and were removed. Five items were removed in tense-anxiety, seven, in depression-dejection, three, in vigor-activity, three, in fatigue-inertia, two, in confusion-bewilder-ment, five, in friendliness, and six, in anger-hostility. Thirty four items remainined : angry, clear-headed, lively, confused, sorry, shaky, list-less, peeved, sad, active, blue, hopeless, spiteful, uneasy, unable to concentrate, fatigued, helpful, nervous, lonely, cheerful, bitter, exhausted, anxious, ready to fight, sluggish, helpless, alert, deceived, efficient, worthless, forgetful, terrified, vigorous, and uncertain about things. 3. Factor analysis was done in order to confirm construct validity and three factors were obtained from the result. The first factor, 'anxiety-depression' included 21 items, the second factor, 'vigor' included eight items, and the third factor, 'anger' included five items. Cronbach coefficient alpha for the 34 items was. 95. Based on the result, the following is suggested : 1. a contribute to elder's welfare can be made by examining Korean elder's mood in life. 2. there is a need to develop tools appropriate to Korean culture which can be used to examine elders' mood. 3. The modified POMS tool needs to be reverified with appropriate age groups and settings.

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조잡에 대한 형상의학적 고찰 (Review on Gastroenteric Troubles According to Neurosis or Uncomfortable Feeling with Hyungsang Medicine)

  • 강경화;박광길;이용태
    • 동의생리병리학회지
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    • 제18권4호
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    • pp.965-975
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    • 2004
  • The writer reviewed on Chojop and came to conclusions as follows. Symptoms of Chojop is appeared digestive ailment such as belching, nausea, regurgitation of acid, stomachache etc., if being serious, felt oppressed with palpitating in chest and uneasiness at times. In Dangaesimbub written by Chujinhyung, the causes of Chojop were mainly regarded as phlegmatic fire(痰火) and suggested the way of treatment. The causes of Chojop are movable fire with phlegm, insufficiency of blood caused by thinking to excess, and Shinyanghohan(腎陽虛汗) that is piled cold phlegm by voidance and coldness of Renal Yang, but the main cause is brought to a conclusion as phlegmatic fire. The phlegmatic fire is come from being in discord with the spleen and the stomach, or from in harmony between vigor and blood according to essence and vital energy which are disturbed by combined feelings. That is caused by disharmony between inner and outer conditions according to individuals. The distinctive features in shapes of Chojop are revealed to shapes such as manlike woman, womanlike man, wearing darkish or reddish color between two eyebrows, being almond eyed, strong eyebrows, being sunk the upper part of the nose bridge, lots of facial blots, Dam-body, Ki type, Shin type, Birds group, and Yangmyung type. The doctors can prescribe Whadamchungwhatang to Yangmyung type, Yanghyulsamul-tang for patients with strong eyebrows so flourishing blood and vigor, Hyangsapyungwuisan for patients belong to Birds group, Soshikchungul-tang for Ki type, and Palmiwhan for man belonged to Bangkwang-body with voidance and coldness of Renal Yang chiefly.

Evaluation of Sesquiterpenoids Content and Growth Characters in Clonal Lines from a Cross between Atractylodes japonica Koidz. ex Kitam. and A. macrocephala Koidz

  • Kim, Kwan-Su;Park, Chun-Geun;Kim, Dong-Hwi;Park, Si-Hyung;Choung, Myoung-Gun
    • 한국약용작물학회지
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    • 제14권2호
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    • pp.107-112
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    • 2006
  • Two Atractylodes species, A. japonica Koidz. ex Kitam. (AJ) and A. macrocephala Koidz (AM) were used in this study. AJ population had higher amounts of Sesquiterpenoids and stronger tolerance to root rot but less vigor of root growth than AM population. Two populations (AJ and AM) were crossed to make interspecific hybrid population. A total of 98 lines propagated clonally were selected from a cross of AJ and AM, and evaluated for contents of sesquiterpenoids, atractylon (ATLN) and atractylenolide III (AT3) using high performance liquid chromatography (HPLC), and growth characters such as plant height, stem number and root weight. HPLC profiles of the hybrids were compared with those of parent plants, and it demonstrated the production of introgression hybrid by crossing between AJ and AM. Of 98 clonal lines,10 lines were selected by 10% level based on the growth vigor and tolerance to root rot, and AJM2102-51 line showed the heaviest root weight (117.1 g/plant) among them. A total of 98 hybrid lines contained on average $0.16\;{\pm}\;0.10\;mg/g$ of $AT3,\;2.00\;{\pm}\;1.37\;mg/g$ of ATLN, and $2.16\;{\pm}\;1.40\;mg/g$ of total sesquiterpenoids, showing high coefficients of variation (above 65%). Ten lines having high contents of sesquiterpenoids were selected, and AJM2101-15 had the highest amount (9.83 mg/g) of ATLN, and showed 40.8 g/plant of root weight similar to mean value (39.9 g/plant) of hybrid lines. The result showed that the introgression of both characters of vigorous growth from AM and high sesquiterpenoids content from AJ could be possible to make new hybrid lines by crossing between AJ and AM.

혈액투석환자의 영적 안녕에 관한 연구 (A Study on Spiritual Well-being of Hemodialysis Patients)

  • 김정남;홍외현
    • 대한간호학회지
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    • 제28권4호
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    • pp.1036-1046
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    • 1998
  • The purpose of this study was to investigate the spiritual well-being of hemodialysis patients and the correlation between spiritual well-being and demographic characteristics and disease related characteristics. The subjects for this study were 98 patients who were diagnosed as having chronic renal failure and were being treated at the hemodialysis units of three hospitals located in Seoul, Pusan and Taegu, Korea. Data were collected from October 27 1997 to November 15, 1997 by an investigator interviewing with a structured questionnaire. Palautizion and Ellison(1982)'s spiritual well-being scale was used after some modification. The results of this study are as follows ; To analyze the differences between demographic characteristics, spiritual well-being, and disease characteristics and the spiritual well-being, T-test and ANOVA were used. 1. There were statistically significant differences in spiritual well-being for the demographic characteristics of age (p=0.0145) religious affiliation(p=0.0001) and level of education(p=0.04). 2. There were statistically significant differences in spiritual well-being for the disease characteristics perceived health status (p=0.0014) and vigor(p=0.01) 3. The mean score for spiritual well-being in hemodialysis patients was 57.10 of a possible range of 22-88. Among the components of spiritual well-being, the mean score for religions well-being was 27.01 of a possible range 11-44, and for existential well-being 30.09 of a possible range of 11-44. 4. Correlation between general characteristics and spiritual well-being showed that there were significantly positive correlations for level of education(p=0.0036), perceived health status(p=0.0001), vigor(p=0.0036) and religion(p=0.0004)

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Effects of seed sources and shade on vigor of Brant's oak seedling

  • Taghvaei, Mansour
    • Journal of Ecology and Environment
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    • 제33권4호
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    • pp.299-306
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    • 2010
  • The use of local seed provenance is often recommended in forest restoration. Early vigor is a combination of the performance of seed germination and emergence after planting. The ability of young Brant's oak plants to grow and develop after emergence and its dependence on local habitat conditions was investigated in this study. The effects of seed source and shade on early growing seedlings of Brant's oak (Quercus brantii L.) were determined in field measurements. Seeds of Quercus brantii L. were collected from 4 forest areas (seed sources) in southern Zagros (Provinces of Kohkilouyeh-Bouyer Ahmad and Fars) at altitudes of 850, 1,100, 1,500, 2,100 m a.s.l., and planted in a nursery constructed in southwestern Iran. According to a split-plot design consisting of four blocks, each containing two main treatment plots (no shading, partial shading), each main plot was sub-divided into four sub-plots (for elevations of 850, 1,100, 1,500 and 2,100 m). Results showed that shade treatments had significant effects on emergence percentage and rate, shoot length, shoot dry weight (SDW), root dry weight (RDW), leaf area (LA), and chlorophyll content. Ecological factors also had an effect on seed performance. Altitude of seed source had a very significant effect on root length, LA, SDW, and RDW. The seeds collected from 850 m a.s.l. elevation showed the highest performance, especially in leaf area, root length, shoot dry weight, and root dry weight. Our results showed that the altitude of 850 m a.s.l. was the best for collecting Brant's oak seeds.