• Title/Summary/Keyword: Total length

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A Study on the Yolk Absorption and Early Growth in the Alevin of Rainbow Trout, Oncorhynchus mykiss (무지개송어, Oncorhynchus mykiss 자어의 난황흡수 및 초기성장에 관한 연구)

  • Park, In-Seok;Im, Jae-Hyun;Zhang, Chang-Ik
    • Korean Journal of Ichthyology
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    • v.8 no.1
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    • pp.49-55
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    • 1996
  • The growth of total length(TL), total weight(TW) and somatic weight(SW) of rainbow trout, Oncorhynchus mykiss alevin at yolk absorption period was expressed by the Gompertz growth model as $TLt=2.7e^{-1.24{\cdot}e^{-0.11t}}(r^{2}=0.66)$, $TWt=1.8e^{-2.03{\cdot}e^{-0.11t}}(r^{2}=0.66)$ and $SWt=1.8e^{-5.41{\cdot}e^{-0.13t}}(r^{2}=0.83)$ respectively. Yolk length, yolk height and yolk volume of rainbow trout decreased linearly. The relative growth of total weight-total length, somatic weight-total length, yolk length-total length, yolk height-total length, yolk volume-total length, yolk weight-total length, yolk weight-total weight, yolk weight-yolk height and yolk weight-yolk length at yolk absorption period revealed the pattern of yolk absorption in rainbow trout.

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Relative Growth of Microstomus achne (Pleuronectidae, PISCES) during Early Life Stage (찰가자미(Microstomus achne) 초기생활기의 상대 성장)

  • Byun, Soon-Gyu;Kang, Chung-Bae;Han, Kyeong-Ho;Kim, Jin-Koo
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.46 no.6
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    • pp.970-972
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    • 2013
  • We examined the relative growth of Microstomus achne during early life stages of laboratory-reared larvae and juveniles. Turning points in the relative growth of preanal length and upper jaw length against total length occurred during the settlement period (11.12-19.91 mm in total length). However, turning points in the relative growth of head length and eye diameter, as compared to total length, occurred during metamorphosis (17.57-22.47 mm in total length). Our results suggest that Microstomus achne concentrates its energy on the feeding apparatus (jaw) and digestive organs (intestine) rather than sensory or neural organs (eye, head) during early larval stage growth.

STUDIES ON THE GENETIC ANALYSIS AMONG BURLEY, FLUE-CURED AND SUN-CURED TYPE TOBACCO. III. GENETIC COMPONENTS IN $F_1$ GENERATION. (버어리종, 황색종, 양건종, 담배의 유전분석에 관한 연구 III. $F_1$의 유전분석)

  • 한철수;김용암;정기택;이종두;권구홍
    • Journal of the Korean Society of Tobacco Science
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    • v.9 no.1
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    • pp.45-55
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    • 1987
  • For some basic information in tobacco breeding, the modes of inheritance and heritabilities for the twelve agronomic and chemical characters were estimated in the study of eight varieties partial diallel set. Additive gene actions were significant for all characters except total nitrogen content and dominance gene effects were also significant for all characters. Yield, number of leaves per plant, leaf length and leaf shape index were inherited as partial dominance, and overdominance was detected for plant height, stem diameter, internode length, total alkaloid, total nitrogen and total sugar content. Dominant gene showed increasing effects in yield, plant height, stem diameter, internode length, leaf width and total sugar content, but showed decreasing effects in the other characters. The broad heritability was very high for all characters. and the narrow heritability was high in days to flower and yield, but low in internode length, total alkaloid, total nitrogen and total sugar content.

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Development of Eggs, Larvae and Juveniles of the puffer, Takifugu rubripes reared in the Laboratory (자주복 난 발생 및 자치어의 형태발달)

  • 한경남
    • Journal of Aquaculture
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    • v.12 no.4
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    • pp.255-266
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    • 1999
  • The early development, growth, and morphological changes of Tiger puffer Takifugu rubripes are described on the basis of a seres of a series of reared specimens. Detailed o수 the early developmental stages are illusrtated withe special reference to morphological transformation. Egg and sperm of puffer fish Takifugu rubripes were obtained from mature adults under natural conditions, ferilized artificially and incubated in the laboratory. The incubation period of fertilizd eggs was 160 to 180 hours at a temperature of $15.1~ 18.0^{\circ}C$. Larvae were fed successively with rotifer, Artemia nauplii and artificial food for 90 days. The mean total length of newly-hatched larvae was about 2.8mm. Mouth opening occurred on the 1- day yolk-sac larvae and initial feeding was observed on th 4-5 days after hatching . The morphological transitions from the larvae to juvenile and juvenile and juvenile to young stages occurred when fish reached about 10mm in total length(about 30 days after hatching) and about 32mm in total length(about 60days after hatching) , respectively. The coefficient of variation in total length distribution increased with growth. Following the appearance of its peak at the size of about 18mm in total length, the coefficient value declined. Many changes in proportion of the body parts to total length were observed at about 9~10mm and 30~33mm in total length, corresponding to the transformations from larvae to juvenile and from juvenile to young, respectively. Also one big morphological change was observed at about 18mm in total length that divide the juvenile stage into two sub-stages.

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On the Total Length and Body Weight of the File File Fish , Navodos Modestus Caught in the Sonthern Sea Area of Komundo Is . During Summer (여름철 거문도 남부해역에서 어획된 말쥐치의 체장과 체중 조성)

  • 염말구
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.22 no.4
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    • pp.71-74
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    • 1986
  • The author tried to clarify the distribution of the total length and body weight of the file h, Navodos modcstus, caught by trawl net during July, 1984 in the southern sea korea. Among the catches of five times fishing operation, 1540 individuals were randomly sampled for the measurement. The results are summarized as follows; " The distribution of total length showed bimodal type, wbich was able to analyzed into two normal distributions N(17.46, 1. 02^2) and N(22.09, 1. 77^2). And smaller group was much than older one. The age of the sample estimated from the total length distribution of. smaller group was 1. 5 to 2, and the larger group 2. 5 to 4. The relationship between the total length and the body weight can be presented as following equation: $$W=0.01726 L^{2.8507}$$ ' or $$W= 0.01109 L^{3.0}$$ or $$W= 0.01109 L^{3.0}$$.

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Optimization of Net Residual Dispersion and Launching Power Depend on Total Transmission Length and Span Length in Optical Transmission Links with Dispersion Management and Optical Phase Conjugation (분산 제어와 광 위상 공액이 적용된 광전송 링크에서 총 전송 거리와 중계 간격에 따른 전체 잉여 분산과 입사 전력의 최적화)

  • Lee, Seong-Real
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.36 no.12B
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    • pp.1433-1441
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    • 2011
  • Design rules of optical transmission links with dispersion management (DM) and optical phase conjugation (OPC) for compensating optical signal distortion due to chromatic dispersion and self phase modulation (SPM) of single mode fiber (SMF) are investigated in this paper. Design rules consist of optimal net residual dispersion (NRD) and optimal range of launching power of wavelength division multiplexed (WDM) channels as a function of total transmission length and span length. In all considered total transmission length and span length, optimal NRD are obtained to +10 ps/nm and -10 ps/mn for transmission links, which is controlled by precompensation and postcompensation, respectively. It is confirmed that system performances are more improved and effective NRD for wide launching power have wider range as total transmission length and span length are more decreased.

A Study on Correlation among Length Changes of Body Surface Total lines and Segment Lines -Changed Amount Caused by the Lower Limb Movements- (체표(體表)길이 변화(變化)의 상관성(相關性) 연구(硏究) - 다리(下肢) 동작(動作)에 따른 변화량(變化量)을 중심(中心)으로 -)

  • Cho, Sung Hee
    • Journal of the Korean Society of Clothing and Textiles
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    • v.17 no.4
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    • pp.622-637
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    • 1993
  • The Purposes of this study were to investigate the significant correlation among the length changes of body surface total lines and between the length changes of body surface total lines and those of component body surface segment lines, and to reveal anticipated relation among body surface length changes by the lower limb movement including all movement direction of hip joint, knee joint & ankle joint for the more functional clothing making & designing. 10 Crosswise & 5 lengthwise body surface total lines and 48 crosswise & 39 lengthwise body surface segment lines of 26 female college students aged from 18 to 24 years were measured directly on the body surface and analyzed by ANOYA & Multiple Comparison Test(Tukey), and the length changes of them were calculated as the difference of the mean length at Fl movement from the mean length at each movement and were analyzed by PEARSON CORRELATION. The results were as following : 1. Correlation among the length changes of body surface total lines (1) Correlation among the length changes of body surface total lines significantly changed by the movement ; 1) The more GA5 expanded, the more GA6 & GA7 each expanded, and the more GA18 expanded, the more GA1 & GA3 each expanded. 2) The more GA15 expanded, the less GA14 each contracted. 3) The more GA7 expanded, the larger GA17 contracted. 4) The more GA1 & GA18 expanded, the larger GA16 contracted, and the larger GM contracted, the less GA16 contracted. (2) Only GA7 and GA17(at F4) showed high (over r=0.7) correlation coefficient, But others' correlation coefficients were r=0.4~0.7. (3) Correlation coefficients among & between girth items and length items 1) Correlation coefficients among girth items were shown + ; between GA3 and GA4, GA5, GA8, between GA5 and GA6, GA7, GA9 each, between GA1 and GA6 and between GA4 and GA7. 2) Correlation coefficients among length items were shown + or - ; shown + between GA14 and GA15 and between GA17 and GA16 ; but Shown - Between GAlS and GA16. 3) Correlation coefficients between girth items and length items were mainly shown - : shown-between GA1 and GA16, GA17, between, GA4 and GA16, between GA6, GA7 each and GA17, between GA8 and GA18 ; but shown + between GA1, GA3 each and GA18 and between GA8 and GA14 were shown +. 2. Correlation between the length changes of body surface total lines and those of component body surface segment lines. (1) All correlation coefficients were + except A147 of GA14. (2) Correlation coefficient over r=0.7 was shown ; between GA3 and CB3, A35 each, between GA5 and A054, between GA6 and A63, between GA7 and A72, A74 each, between GA8 and A83, A84 each, between GA15 and A153, between GA16 and Al64, Al65 each, between GA18 and A189 : but was not shown between GA4, GA17 and it's component body surface segment lines each. (3) Characteristics of correlation between the length changes of body surface total lines and those of body surface segment lines ; 1) If significant correlation of body surface total lines were expansion parts, it's component body surface segment lines was also expansion segment and the otherwise were the same. But exception was shown between expansion line GA3 and A031 (at F4), between GA18 and AlS9 (at F6) and between GA14 and A147, so to speak GA3 & lines and GA14 was contraction total line oppositely A147 was expansion. 2) The more GA3, GAlS expanded, the less A031, A189 contracted. 3) The more GA14 contracted, the more A147 expanded. 4) All correlation except the above 2), 3), the more total lines (GA1, GA3, GA5, GA15, GA16, GA18) expanded, the more segment lines (A15, CB1, A31, A34, CB3, A52, A54, A153, A169, A181) expanded, or the larger total lines (GA14, GA16, GA17) contracted, the larger segment lines (A141, A142, A161, A164, A165, A172) contracted.

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The Plan on Brassiere of Reduce Clothing Pressure for the Twenties Aged Women (20대 여성을 위한 의복압 경감 브래지어 설계)

  • Park, You-Shin
    • Journal of the Korean Society of Fashion and Beauty
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    • v.4 no.3 s.9
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    • pp.40-44
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    • 2006
  • This study is on the brassiere of reduce clothing pressure. To set the measurements of bras for women in their 20s, considering the comfortableness in wearing and tightness, this paper conducted a questionnaire survey concerning breasts and bras as well as measurements of body and contact surface pressure. As a result of comparing the discrepancies between the lower chest circumferences of the body and the bra, it was revealed that 67.0% were wearing one that was bigger than the body size. Most of them mentioned 'feeling of tightness' as a reason(60.4%), which suggests there are problems of the total length and elasticity in the process of making bras. The favorite bra types are wire type(57.9%), mold type(24.3%), and strapless type(10.4%).it is recommended that the total length of lower chest circumference be increased. The result and the recommendations of this study are as follows: First, the total length of brassiere be increased by 5cm from the current patterns in the process of manufacturing. Second, elasticity of the lower-side tapes be extended from 120% to 170%.

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A Study on the Ease of the Total Crotch Length of Slacks (슬랙스원형의 밑위앞뒤길이 여유분에 관한 연구)

  • 박재경;임원지
    • Journal of the Korean Society of Clothing and Textiles
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    • v.18 no.5
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    • pp.602-614
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    • 1994
  • The purpose of this study was to suggest the proper ease of total crotch length concerning both appearance and comfort. The research processes as follows. 1) For the purpose of obtaining the necessary ease of slacks in body movement, experimental slacks of no ease of total crotch length were made. Three college girls putting on these experimental slacks were examined on their back middle waist lines using cross-cut method. 2) Experimental slacks for suggesting the proper ease consist of 7 types; slacks CO, Wl, W3, W5, W7, C3, C5. The sensory evaluation for appearance and comfort was applied to evaluate the 7 slacks. The results can be summarized as follows. 1. As the leg-movement angle increased, the vertical space increased and the horizontal space decreased. There was negative relationship between vertical and horizontal space. And as the leg.movement angle increased, the area of space increased. The shapes of space showed the amounts of space and the direction of force by the movements. 2. The appearances of slacks C3, W3, C5 were better than the other slacks. The eases of the crotch were better than those of the waist line in appearance. And slakcs W7 was better than any other , ;lacks in comfort. When the amount of each part of eases was same, the comfort in eases of crotch was not as good as that of waist line. 3. In slacks, the proper ease of total crotch length was 3% and 5% of total crotch length.

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Osteological Development of the Larvae and Juvenile in Sakhalin Sole Limanda sakhalinensis (사할린가자미(Limanda sakhalinensis) 자치어의 골격발달)

  • Han, Kyeong-Ho;Lee, Seong-Hoon;Baek, Jeong-Ik;Park, Jae-Min
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.52 no.4
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    • pp.389-399
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    • 2019
  • This study is designed to observe the development of skeleton of Sakhalin sole Limanda sakhalinensis in order to use the findings as the basic data for the taxonomic research. As for the development of skeleton, on 20 days of the hatch when its average total length was 5.86 mm, the clavicle and the paraspenoid in the cranium were ossified. As for the jaw bone, the premaxillary and the dentary were ossified. On 28 days of hatch when its total length was 7.05 mm, 25 neural spines and 22 hemal spines were ossified and 5 fin rays appeared. On 34 days of hatch when its average total length was 8.40 mm, the end of tail was twisted by $45^{\circ}$ and 3 hypural bones were ossified. On 48 days of hatch when its average total length was 10.1 mm, 2 actinosts below the postcleithrum were ossified. On 54 days of hatch, when the average total length was 10.4 mm, the ethmoid, prootic and exoccipital were ossified, thus completing the ossification of skeleton.