• 제목/요약/키워드: LENGTH-WEIGHT RELATIONSHIP

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봄철 부산 연안의 요각류 Calanus sinicus의 길이-무게 관계식 (Length-Weight Relationship of the Copepod Calanus sinicus off Busan in Spring)

  • 강형구;김가람;이연정
    • Ocean and Polar Research
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    • 제44권3호
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    • pp.261-267
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    • 2022
  • We derived a length-weight relationship for Calanus sinicus off Busan, Korea in spring to estimate the biomass of the C. sinicus population around Korean waters, and compared it with the previously derived equations. The developmental stages and prosome length of C. sinicus used in the relationship ranged from 1,376-1,540 ㎛ for copepodite 4 (CIV), 1,753-1,971 ㎛ for copepodite 5 (CV), and 2,160-2,283 ㎛ for adults (CVI). Dry weight and carbon content were measured from a total of 26 replicates. Length-weight relationships derived in the present study are as follows: log C = 3.342 log PL - 9.449, log DW = 3.394 log PL -9.219, where C is carbon content (㎍), DW is dry weight (㎍), and PL is prosome length (㎛). When comparing the present regression equation of length-weight for C. sinicus with the previous one, our regression equation showed an average carbon estimate to a given range of mean prosome length. The length-weight relationship of C. sinicus in the present study can be used to better estimate the biomass of the C. sinicus population in the coastal waters of Korea.

임신부의 건강이 신생아의 체중과 신장에 미치는 영향

  • 김영매
    • 대한간호학회지
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    • 제1권1호
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    • pp.49-58
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    • 1970
  • For the purpose to clarify the effects of the mothers health during pregnancy on the weight and length of the newborn infants, this study was carried out on 500 new born infants delivered at St, Mary's Hospital, Ewha Woman's University Hospital and Red Cross Hospital in Seoul during the eight-month period from March, 1969 to October, 1969. In this study, the relationship between the T weight and length of the new born infants, and in each case, the weight, length, age, duration of labour, duration of pregnancy, weight gain during pregnancy and diets level during pregnancy of the mother were observed. The relationship between the weight and length of the new born infants and the parity n-as also observed. The results obtained in this study were as follows. 1. The weight of new born infants of both sexes was significantly correlated with the parity, the weight of the mother, and the duration of labour of the primipara. The weight of the mother and the duration of pregnancy were significantly correlated with the weight of the male new born infants only, and the weight of the new born infants and the weight gain of the mother during pregnancy were significantly correlated in the female new born infants. 2. In general, the weight of the new born infants of well or excellently nourished mothers were heavier than those of poorly nourished ones. 3. The length of the new born infants was significantly correlated mother the duration of labour in the primipara.

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서해산 대구 Gadus macrocephalus TILESIUS의 체장$\cdot$체중의 상관 관계 (LENGTH-WEIGHT RELATIONSHIP OF GADUS MACROCEPHALUS TILESIUS OF THE YELLOW SEA)

  • 정태영;김용억
    • 한국수산과학회지
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    • 제4권3_4호
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    • pp.103-104
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    • 1971
  • 1. 1964년 4월 7일자 1964년 5월 12일의 양일간에 기선 저인망으로 이획된 표본으로 군산 어협 위판장에서 채집된 체장 16cm로부터 33.9cm의 대구 247개체를 재료로 체장과 체중의 상관관계를 조사하였다. 2. 전 개체에서 체장의 신장에 따른 체중의 회귀를 나타내면 $Y=0.000001225X^{3.42706}$이었다.

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횡성호에 분포하는 피라미 (Pale chub: Zacco platypus) 개체군의 Length-weight Relationship 및 Condition Factor (Length-weight Relationship and Condition Factor of Zacco platypus in the Lake Hoengseong)

  • 장영수;최재석;이광열;서진원;김범철
    • 생태와환경
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    • 제40권3호
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    • pp.412-418
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    • 2007
  • 2005년 4월부터 10월까지 횡성호를 중심으로 상 하부 및 호내지역에 분포하는 피라미 개체군의 동태를 알아보았다. 피라미는 횡성호에서 우점종으로 나타났으며 본 종의 생태학적 특성을 파악하기 위해 댐 상류하천과 호내 그리고 댐 하류지역의 하천에서 채집된 피라미를 지역별로 구분하여 전장과 체중과의 관계, 길이와 비대지수(K와 $K_n$)와의 관계를 각각 비교하였다. 전장-체중의 관계에 의해 관계식을 추정한 결과 $Log(T_W)=-2.26+3.18Log(T_L)$로 나타났다. 회귀계수 b값은 호내지역에서 3.35로 높았고, 상류하천과 댐 하부지역에서 각각 3.09와 3.15의 간을 나타내 유수역인 하천보다 정수역인 호수에서 채집된 피라미가 더 양호한 성장도를 나타냈다 비대지수에 의한 개체군의 비만기울기 또한 양의 상관성을 보였으며 호수에서 기울기 값이 더 큰 것으로 나타났다. 이러한 결과는 횡성호에 분포하는 피라미 개체군이 양호하거나 안정되었음을 반영하고 있다. 호수는 피라미 개체군에 더 좋은 조건을 제공하고 있는 것으로 보인다.

체중조절행동과 의복의 맞음성 만족도 상관연구 (The relationship between Weight Control Behavior and Satisfaction with Fit of Apparel)

  • 이영주;임숙자
    • 한국의류학회지
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    • 제25권1호
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    • pp.13-24
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    • 2001
  • The purpose of this study was to set up an effective marketing strategy targeting college women by researching the relationship between weight control behavior and satisfaction with fit of apparel. The results showed that 1) 85.5% of the college women participated in weight control behavior, and 53.5% of them wanted to lose more than 3kg of their weight, 2) both body cathexis and fit satisfaction of college women were generally low. College women were less satisfied with their body and fit of apparel according to the increase of weight control degree. The weight control parts and unsatisfied body parts were almost matched : thigh, abdomen, hip, calf, and weight. The unsatisfied fit of apparel parts were also found to be thigh, hip, abdomen, crotch, pant length that matched each parts, 3) fit satisfaction of neckline, shoulder, midriff, hip, crotch, thigh, calf, and skirt length decreased according to the increase of weight control degree, and 4) weight control group which wanted to lose weight at neck, shoulder, arm, breast, waist, abdomen, hip, thigh, and calf also had low fit satisfaction of neckline, shoulder, armhole, sleeve, breast, waist, abdomen, midriff, hip, thigh, crotch, calf, and skirt length in clothing.

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들깨 수량에 관여하는 주요 형질간의 상관관계와 그들 형질이 수량에 미치는 영향 (Relationship Between The Yield Components and Their Influence on the Yield of Perilla)

  • 유익상;최병한;오성근
    • 한국작물학회지
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    • 제11권
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    • pp.99-103
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    • 1972
  • 들깨 수량에 영향하는 형질을 정확히 알기 위하여 형질상호간의 상관관계와 경로계수를 분석한 바 그 결과를 요약하면 다음과 같다. 1. 경장은 경식경, 화방수, 경중과 유효분지수는 화방수와 높은 정의 상관을 그리고 유효분지수는 1,000입중과 화방수는 1,000입중과 각각 높은 부의 상관을 보였다. 2. 수량에 직접적으로 영향하는 형질은 경중, 화방수 1,000입중 유효분지수, 경직경등이다. 3. 간접적 효과는 경장대 경중, 유효분지수 대 화방수, 화방수 대 경중간에 높은 값을 보였다. 4. 들깨의 수량은 경장이 길고 유효분지수 및 화방수가 많으며 1,000입중과 경중이 무거운것일수록 수량이 많다는 사실을 알수 있다.

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Canada산 인삼의 형태 특성 (Correlations among Morphological Characteristics of Panax quinquefolium Plants Grown .in British Columbia, Canada)

  • Smyth, S.R.;Bailey, W.G.;Skretkowiez, A.L.
    • Journal of Ginseng Research
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    • 제12권2호
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    • pp.145-152
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    • 1988
  • Correlations between various morphological characteristics of Panax quinquefolium plants grown in Lytton, British Columbia, Canada were assessed for 1-through 4-year old plants. Root dry weight, the dependent variable, was found to be strongly related to leaf dry weight, leaf length and root length for 1-and 2-year old plants during the middle of the growing season. For 1- and 2-year old plants at the end of the growing season, root dry weight was found to be related to leaf dry weight, leaf length and stem dry weight. For 3 and 4-year old plants, root dry weight was found to be related to leaf dry weight, leaf length and stem dry weight. For 3- and 4-year old plants, root dry weight was found to be related to leaf dry weight. For practical considerations, this latter relationship provides a simple method for selecting superior plants from which seed can be harvested.

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Length-weight relationships and reproductive biology of commercially important fishes from Ribb Reservoir, Ethiopia

  • Agumassie Tesfahun Asres;Sale Alebachew;Negesse Kebtieneh
    • Fisheries and Aquatic Sciences
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    • 제26권5호
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    • pp.318-335
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    • 2023
  • It is important to understand the biological aspects of fish for fishing management. This study was conducted from February through October 2021. A total of 1,629 fishes were collected using different fishing gears. The length-weight relationship is a power curve for all fishes and showed a significant (r2 > 0.8). All fishes revealed a negative allometric growth pattern except Labeobarbus intermedius. Oreochromis niloticus (1.714 ± 0.009) was found in better condition than other fish species (analysis of variance [ANOVA], p < 0.05). The length at maturity was 24.0 cm and 25.4 cm total length (TL), 28.9 cm and 28.2 cm fork length, and 53.2 cm and 57.5 cm TL for females and males of O. niloticus, L. intermedius and Clarias gariepinus, respectively. Fecundity was ranged between 100-947 eggs/g with absolute fecundity (AF) of 468-3,832 eggs, 200-1,000 eggs/g with AF of 2,752-136,420 eggs, and 505-900 eggs/g with AF of 2,000-6,404 eggs for O. niloticus, C. gariepinus, and L. intermedius, respectively. Their respective mean fecundity was 1,490 ± 91, 23,330 ± 5,070, and 3,096 ± 273 eggs, respectively. Mean fecundity revealed a significant variation between size classes and species (ANOVA, p < 0.05). The fecundity length and fecundity-body weight relationships except (O. niloticus) of fishes were curvilinear while the gonad weight (GW)-fecundity relationship was linear for all fish species. The fecundity was moderately associated with increasing length than body weight, and GW for all fishes (r2 > 0.6). In conclusion, a tangible management setup is required to sustain the use of fish in the reservoir.

국립공원에 서식하는 참갈겨니의 전장-체중 상관관계 -소백산, 속리산, 가야산국립공원을 대상으로- (Length-weight Relationship for Zacco koreanus in the National Park of Korea -A case of Sobaeksan, Songnisan and Gayasan -)

  • 이승록;박세권;주현수
    • 환경생물
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    • 제31권3호
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    • pp.173-179
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    • 2013
  • 2012년 4월부터 10월까지 국립공원 4개 지점에서 참갈겨니 개체군 특징을 조사하였다. 각 조사지역에서 전장과 체중의 범위는 47~160 mm와 0.50~41.50 g이었다. 전장-체중 상관관계에서 매개변수 b값의 범위는 2.883~3.497로 나타나 서식환경은 비교적 양호한 것으로 나타났다. 비대지수 (K)의 범위는 0.689~1.012이었고, 기울기는 0.0009~0.0024의 범위로 모두 양의 값을 보였다. 참갈겨니 개체군과 동서어종과의 관계에서 매개 변수 b값은 종수와 개체수에 반비례하는 것으로 나타났다. 결과적으로 국립공원에 서식하는 참갈겨니 개체군은 동서어종, 수온, 계절변화, 조사지점의 변화 같은 다양한 요인에 의해 b값과 비대지수에 차이를 보이는 것으로 추측된다.