• 한국수산과학회지
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• 제44권4호
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• pp.366-371
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• 2011

The sea squirt Halocynthia roretzi is mainly cultured in Tongyeong, Southern coastal area of Korea. This study presents the physiological rates of respiration, excretion, feeding and assimilation efficiency of the sea squirt Halocynthia roretzi to analyze the SFG(scope for growth) and net growth efficiency, determined during 2007. Oxygen consumption and nitrogen excretion rates increased with a rise in temperature during the summer period whereas feeding rates decreased. The O:N ratio was high during winter(October to February). Assimilation efficiency showed an annual average of 75.4% during the experimental period, except during a period of elevated temperature in July to September(average $25^{\circ}C$). Net growth efficiency($K_2$) was 8.7 to 64.2% except for May to September, when temperature increased at the aquaculture farm. SFG was negative from May to September, reflecting high temperatures and low feeding rates during this period; its highest positive values occurred during winter.

• 한국연초학회지
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• 제11권2호
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• pp.127-134
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• 1989

Several growth characteristics of two ornamental tobacco species, Nicotiana sanderae and N. affinis, were investigated in this study. Also effect of temperature and daylength on the flowering of the tobacco plants were evaluated to obtain basic information on breeding and cultivation. 1. The plants were great in high temperature-long day at the early stage and in low temperature-short day at the late stage of plant growth, for both Nicotana species. At the early growth stage the leaf length N. sanderae was great in high temperature-long day, and that of N. affinis was great in high temperature-short day period, while at the late stage of the plant growth the leaf lengths were more significantly effected by the temperature rather than daylength. Leaf width and leaf shape index were less sensitive to the conditions. 2. For both of the species, the total number of tobacco leaves not much influenced by the temperature and daylength. 3. There were no significant differences for budding and flowering period between the two species, both of which were sensitive to temperature and daylength with more influence by daylength than temperature. 4. Number of floral stalks, number of flower and flowering period were not much influenced by temperature and daylength; however, N. affinis had 2 more floral stalks, 31 more flowers, and 6 day longer flowering period than N. sanderae.

• 한국작물학회지
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• 제24권2호
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• pp.65-73
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• 1979

1. 파종기에 따른 묘대일수를 연장함에 따라 출수가 늦어졌으며, 품종별 출수기의 변이는 조생종은 묘대일수, 중만생종은 파종기의 영향을 받으며, 또한 동일 이앙기내에서 묘대일수 연장은 영양생장기간의 증대로 출수를 단축시켰다. 2. 파종기와 묘대일수 연장시 출수일수와 영양생장 기간은 짧아졌으며 기본영양 생장성이 작은 품종일수록 묘대일수 연장시 불시출수의 위험이 컸다. 3. 간장, 등숙비율은 묘대일수, 수수와 일수당입수는 파종기의 조만에 영향을 받으며 이들은 서로 상관을 보였다. 4. 등숙온도와 수량과도 상관을 보였으며 등숙기를 $23^{\circ}C$ 정도에서 출수개화하도록 조기이앙을 요한다. 5. 안전수량을 얻기 위해서는 조생종 6월 10일(40~50일묘), 중만생종 5월 30일(30~60일묘)이전 이앙을 안전작기로 본다.

• The Journal of Asian Finance, Economics and Business
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• 제9권6호
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• pp.297-302
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• 2022

The current study examines the relationship between inventory management efficiency and financial performance in Saudi Arabian companies. The study collected data from the companies listed on Tadawul (a Saudi Arabian stock exchange) during the period starting from 2016 and ending in 2020. The study uses pooled regression model by incorporating Return on Assets (ROA) and Inventory Turnover Ratio (ITR) as a performance measurement variable and inventory conversion period as an inventory management variable to report the results. The results show a positive and significant association between inventory management and firms' financial growth measured in terms of Return on Assets (ROA). Further, the study reports a positive and significant association between the inventory conversion period and inventory turnover (ITR). This shows that managing inventory efficiently shall positively impact the firm's performance. The other variables, such as debt ratio and gross profit, are positively related to ROA and negatively correlated with ITR. The firm growth is positively associated with both the dependent variables. The results suggest that the management of inventory in Saudi Arabian firms is efficient. Further, the firm size is positively associated with ROA and ITR. This shows a nexus between inventory management efficiency and firms' financial growth in Saudi Arabian companies.

• Applied Biological Chemistry
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• 제16권2호
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• pp.94-98
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• 1973

1. 품종은 노지에서 재배한 복수2호를 사용하였으며 1971년과 1972년 2회에 걸쳐 Tomato 과실의 성숙시기별 호흡량변황 및 저장중 성분변화에 대하여 조사하였다. 2. 환경압력조절에 의한 Tomato 과실의 호흡억제효과는 SAP 구중 660 Torr. 구가 가장 효과적이었다. 3. 성장중 성숙시기별로 채취한 Tomato의 호흡량 변화는 각채취시기별로 차이가 있었으며 Tomato의 일대에 있어서 시기별 숙기에 이른 과실을 경과일수에 따라 호흡량을 조사하면 전체적으로 호흡량의 증감이 sigmoid 형으로 나타났으며 하나의 climacteric pattern을 나타내 주고 있다. 4. 성장중 성숙시기별로 채취한 Tomato 과실의 환경압력변화에 의한 영향은 어느시기에서나 NAP구보다 SAP구의 호흡량이 적었으며 전 기간중 동일한 경향으로 호흡억제 효과가 있었다. 5. 저장중 Tomato 과실의 중량변화는 NAP 구가 SAP 구보다 현저하며 산, 당 및 Vitamine-C의 변화에 있어서는 SAP구가 NAP구 보다 감소율이 적었다.

• 농업과학연구
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• 제48권4호
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• pp.945-956
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• 2021

The effective growth of pepper seedlings relies on the growing period and tray used, which both aim to minimize seedling damage during the transplantation process. Therefore, the objective of this study was to evaluate the effect of red and green pepper seedling growth in plug and cylindrical paper pot (CPP) trays with different growth periods of the seedlings. Two different seedling growth trays were used for the two varieties of pepper seedlings in the same growing media. The pepper seedling growth rates were investigated at 15, 30, and 45 days for each of variety. Important parameters, e.g., the plant height, fresh weight for the plant and root, number of leaves, leaf length and width, and leaf chlorophyll contents, were measured. During the experiment, the CPP tray maintained uniform seedling growth as compared to the plug tray. CPP trays ensured the height of the seedling, with these results 0.84 to 1.6 times higher than those of the plug tray for all conditions, indicating the good quality of the pepper seedlings. The shoot and root weights were found to be greater with more leaves in the CPP tray seedlings for 45 days compared to the seedlings grown in the plug tray, whereas the green pepper variety showed a greater leaf ratio than the red pepper seedlings. The analysis of pepper seedling growth presented in this study will guide the selection of suitable growth trays and seedling periods for farmers when they undertake automatic pepper transplantation in the field.

• KDI Journal of Economic Policy
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• 제30권1호
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• pp.33-70
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• 2008

본 연구는 경제위기 이후 한국경제의 성장 둔화의 요인을 살펴보고, 국제비교적 관점에서 위기 이후의 성장 성과를 평가해 보았다. 수량변수 및 가격변수를 이용한 성장회계 분석 결과는 경제위기 이후 급격한 성장 둔화가 주로 노동자 1인당 자본축적의 둔화에 의해 설명되는 것으로 나타났다. 반면, 경제위기 이후 2001~05년 기간 중 총요소생산성 증가율은 경제 위기 이전인 1991~95년 시기에 비해 다소 높은 것으로 분석되었다. 한편 외환위기 이후 한국경제의 성장 둔화는 전 세계적 성장 둔화라는 시대적 요인과 동아시아 지역 고유의 요인에 대부분 기인한 것으로 분석되었다. 특히 자본축적의 둔화는 동아시아 지역 고유 요인에 주로 기인한 것으로 분석되었다. 국제비교적 관점에서 볼 때 전반적으로 위기 이후 한국경제의 성장 성과는 생산성 향상 및 자본축적이라는 측면에서 부정적으로만 평가하기는 어려운 것으로 보인다.

• Journal of Nutrition and Health
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• 제3권2호
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• pp.81-85
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• 1970

These experiments were designed to study the influence of protein undernutrition during lactation period(3 wks) or after-weaning period(8 wks) on growth of organs, and on brain and liver composition of the experimental rats. The following experimental groups were studied. Group No. Rats Lactation(3 wks) (Diet of mother rat) After-weaning period(8wks) Rehabilitation Period(17wks) I 8 25% Casein diet 25% Casein diet 25% Casein diet II 8 12% Casein diet 25% Casein diet 25% Casein diet III 8 25% Casein diet 5% Casein diet 25% Casein diet IV 8 12% Casein diet 5% Casein diet 25% Casein diet After the perriod of rehabilitation(17 wks) with 25% casein diet, the following results were obtained. 1. Most of the organs except the spleen could not catch up with the normal group in their weights for the group of protein undernutrition during lactation(3 wks), even after 17 weeks of rehabilitation. For the group of protein undernutrition during after-weaning period(8 wks) brain, lung, heart, spleen and pancreas could catch up with the normal group after rehabilitation. According to this result it is assumed that the growth of brain, lung, heart and pancreas might be developed mostly during lactation and that the growth of liver and kidney might be developed after-weaning period continuously. 2. For the groups of protein underuntrition during lactation period or after-weaning period the amounts of total lipid, cholesterol and phospholipid of brain were lower than those of normal group. Especially, cholesterol level was significantly lower than normal group. And there was also a significant difference in the phospholipid level of the after-weaning(8 wks) deprivation group. 3. The groups of protein undernutrition during lactation or after-weaning period(8 wks) showed lower level of liver nitrogen and higher level of liver fat. Especially, protein undernutriton during lactation gave a greater influence on the lever of liver fat.

• 한국의류학회지
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• 제19권3호
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• pp.516-524
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• 1995

The purpose of this study was to analyze the variation of body shape and to. divide growth period into some age groups based on body type. Duncan Test, Heath-Carter's somatotyping method and allottery equation (y=baa) were applied to semiautomatic data concerning obesity/leakiness. The materials were 309 females aged from 12 to 17 years old. The following results were obtained: 1. In the Developmental trend of the human body, the 12-13 age groups belonged to the acceleration stage of adolescent growth spurt. The 14-15 age groups belonged to the latter period of adolescent growth. The 16-17 age groups belonged to the termination stage of adolescent growth. 2. In the Heath-Carter's somatotyping method, the average somatotype changed into M.M- C-C-M-D with age. 3. In the alphamerical analysis, the first critical point appeared at the stature 146 Cm in case of weight, LBM and fat. The second critical point appeared at the stature 154-157 Cm in case of LBM and Fat. All the three measurement showed positive allotmentty.

• 한국수산과학회지
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• 제36권6호
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• pp.646-653
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• 2003

Investigations were made on the population structure, sex ratio, growth, and recruitment patterns of Leptochela sydniensis in the southwestern coastal areas of Korea, between May 2000 and December 2001. Spawning period, fecundity, brood loss, reproductive output, and size at sexual maturity also were examined. The results of the sex ratio showed that females were more numerous than males during the overall study period. Parameters of growth were estimated using the modified von Bertalanffy growth function (VBGF) model incorporating seasonal variation into growth. Females grew somewhat faster and reached a larger size than males $(L\infty=12.80\;mm\;CL\;and\;K=0.70\;yr^{-1}\;or\;females,\and\;L\infty=12.08\;mm\;CL\;and\;K=0.69\;yr^{-1}$ for males). The structure of recruitment patterns obtained by the FiSAT program indicated one normally distributed group. Based on the occurrence of ovigerous females and the gonadosomatic index (GSI), the main spawning season was from June to August. Analysis of covariance indicated that brood loss was not observed during the incubation period. The size at which $50\%$ of females are mature is estimated as 5.48 mm CL.