• 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.

• 한국수산과학회지
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• 제30권5호
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• pp.906-908
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• 1997

• 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.

• Fisheries and Aquatic Sciences
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• 제27권6호
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• pp.356-365
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• 2024

The study was conducted in the Terie River between January and April 2022. The objectives of the study were to assess the fish species composition, determine the length-weight relationship and condition factor and assess the water quality of the river using international water quality guideline for aquatic life. Gillnets with different mesh sizes, 4, 6, 8 and 10 cm were used to collect fish specimens in both dry and wet seasons. Immediately after capture, the total length (TL) and total weight (TW) of each individual were measured in centimeters and grams, respectively, and their relationship was determined using the power function. The physicochemical water quality parameters were analyzed using standard procedures and wagtech portable water quality Kits and Secchi Disk apparatus. A total of 667 fish specimens were collected from the Terie River, 410 and 257 in dry and wet seasons respectively. A total of six fish species, Oreochromis niloticus, Labeobarbus intermedius, Labeobarbus nedgia, Labeobarbus beso, Clarias gariepinus, and Ramius loti were recorded. For length-weight relationship and condition factor analysis, more abundant fish species (O. niloticus and L. intermedius) which were found in both seasons were selected. The length and weight relationship of L. intermedius were TW = 0.0073TL^3.04 in dry and TW = 0.0337TL^2.59 in we season indicated isometric and negative allometric growth respectively. While O. niloticus showed negative allometric growth, TW = 0.096TL^2.44 and TW = 0.0335 TL^2.76 in dry and wet seasons, respectively. The mean Fulton condition factor (FCF) of L. intermidus were 0.85 ± 0.03 and 0.94 ± 0.25 in dry and wet seasons, respectively. The FCF of O. niloticus was 1.70 ± 0.13 and 1.73 ± 0.12 in dry and wet seasons respectively. Except for ammonia, the physicochemical water quality parameters were with the permissible limit for aquatic life and are suitable for fishes Terie River. The river has commercially important fish specimens that could be used for food security and livelihood improvement. However, there is very limited fishing activity in the river due to less awareness on the value of fishes. Therefore, sustainable fishery development should be done in the river.

• 수산해양기술연구
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• 제60권3호
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• pp.235-243
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• 2024

Researching and estimating the ecological characteristics of target fish species is crucial for fisheries resource management. The results of these estimates significantly influence stock assessments and management reference points such as size limit and closed seasons. Recently, ecological characteristics have been changing due to overfishing, climate change, and marine pollution, making continuous estimation and monitoring essential. This study analyzed the ecological changes in small yellow croaker (Larimichthys polyactis) resources in Korea over 24 years (2000-2023) using biological data (growth and gonad traits). By estimating the annual length-weight relationship and length at maturity (L50 and L95), we interpreted the numerical trends of early maturation due to resource depletion. The parameter b of the length-weight relationship, indicating the nutritional status of the resources, showed a slight increase over the years, suggesting relatively good nutritional status (b > 3.0) during most periods. Trend analysis between length at maturity and biomass indicated that as biomass decreased, maturity length also decreased.

• 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.

• 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.

• 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.

• 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.

• 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.