• 제목/요약/키워드: Growth & development

검색결과 12,805건 처리시간 0.038초

Effect of different diets on growth and development of the two-spotted cricket, Gryllus bimaculatus (Orthoptera: Gryllidae)

  • Song, Myung-Ha;Han, Moon-Hee;Kwak, Kyu-Won;Lee, Seokhyun;Kim, Eun-Sun;Park, Kwan-Ho;Kim, Won-Tae;Choi, Ji-Young
    • International Journal of Industrial Entomology and Biomaterials
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    • 제33권2호
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    • pp.59-62
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    • 2016
  • Many insects have gained increasing attention as an alternative protein for humans. Among those, the two-spotted cricket, Gryllus bimaculatus (Orthoptera: Gryllidae), was recently approved as a general food ingredient by the Korean Ministry of Food and Drug Safety. For industrial utilization of G. bimaculatus, mass rearing techniques and production system should be standardized first. In this study, we investigated the effects of five different feeds on the growth and development of G. bimaculatus. Feed is the one of the key factors that has considerable effects on rearing insects. With five different kinds of feed on $1^{st}$, $3^{rd}$, and $5^{th}$ instar nymphs, the change of survival rate, body weight were monitored up to eight wk after hatching. We concluded that 50% of soybean flour, 20% of corn powder, 10% of rice bran, 9% of milk serum, 10% of rice flour, 0.5% of microorganisms, and 0.5% of multivitamins and minerals (diet C) was the best mix for promoting growth and development of $3^{rd}$ instar nymphs compared to the control diet.

Research on the Polarization Effects of the Shandong Processing Trade and Strategy to Coordinate Its Development

  • Xiao, Dan Dan
    • Asian Journal of Business Environment
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    • 제3권2호
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    • pp.17-22
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    • 2013
  • Purpose - This dissertation is based on previous research, and analyzes processing trade, which constitutes a major section of foreign trade in Shandong Province. Research design, data, and methodology - The study uses the survey data on polarization, which is a vital index reflecting the unbalanced growth of regional economic development. The article introduces the processing trade polarization index, and the processing trade polarization fluctuation rate, to predict the geographical polarization posture and development trends in Shandong Province. Results -The development of processing trade in Shandong Province shows the level of gradient from east to west. The first-line growth pole has been formed and developed, and the initial formation of the diffusion mechanism has taken place. However, coordination problems in accompanying regional development have become increasingly prominent. Conclusions - This study focuses on the development of processing trade strategy and suggests overall coordination of development objectives, using non-balanced development goals. According to regional characteristics and development objectives of the processing trade in Shandong Province, the region around the city is divided into innovation diffusion region, enhanced growth areas, areas expected to undertake development, and areas to upgrade in four levels, given the different policy proposals.

중학생의 성장 발육과 기생충 보유 현황에 관한 조사 연구

  • 신재신
    • 대한간호학회지
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    • 제1권1호
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    • pp.77-84
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    • 1970
  • A survey was conducted on 2,321 Chung Rhang Middle School boys to check out their physical growth, development and the number of parasite carriers during the period from June 16. to June 23. 1970 As the results of this study, the following conclusions were revealed. A) Physical Growth and Development State. 1. Direct curve in physical growth and development was observed during the period from 13 to 16 years of age. 2. The age and quantity of maximum growth and development. Height; 13~14 years of age 6.1cm Body weight; 14~15 years of age 5.1kg Chest circumference; 13~14 years of age 9.9cm Sitting height; 14~15 years of age 3.4cm 3. Comparison with Japanese students Most Korean students are shorter than Japanese students, though the standard of height became higher than before. The standard of body weight is visibly lower than Japanese students. The standard of chest circumference of the students of age 14 is higher than counter part of Japanese students and the all boys are lower than Japanese students except at the age of 14. The standard of the sitting heights of the Korean students are growing steadily, but every students are shorter than Japanese students. 4. The greatest differences in physical growth and development were shown in 13~14 years of age. 5. The students of 13~15 years of age developed their bodies most highly according to index of Rohrer. 6. Body weight and chest circumference have not grown enough compared with height. The development of sitting height was made highly and the development is steadily growing as they grow old. B. The Number of Parasite Carriers The number of parasite carriers was shown 79.4 per cent among all the student checked out. The number of trichuris was shown 79.7 per cent. The number of parasite carriers was shown higher per cent as the grow old.

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중국의 물류네트워크 및 경제발전 (Logistics network and economic development in China)

  • Li, Kevin;Qi, Guanqiu
    • 한국항만경제학회지
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    • 제31권1호
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    • pp.171-188
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    • 2015
  • 물류시스템은 점점 더 중국의 경제성장을 위한 중요한 원동력 중 하나로 인정받고 있습니다. 물류효과의 폭이 넓어의 범위와 중국의 물류인프라, 물류산업의 발전과 함께 급속한 발전을 이루었습니다. 이 논문은 중국에서 2003년부터 2012년까지 기간 동안 31 지방을 포함하는 데이터 집합을 사용하여, 물류 발전과 경제 성장 사이의 관계를 조사합니다. 요인분석은 국가경제성장의 물류의 발전에 미치는 영향을 정의물류함수의 전체평가를 얻기 위해 적용됩니다. 고정효과패널 데이터의 접근방식에 따르면, 중국의 경제성장에 물류발전의 중요하고 긍정적인 영향은 그사이에, 해안지방과 내장 지방 사이 의 경제발전에 대한비교분석 도 실시, 발견된다. 결과는 경제성장에 물류발전의 영향은 서부지역에 비해 동부지역에서 높은 것이 좋습니다.

Growth Profile and Toxigenicity of Bacillus cereus in Ready-to-eat Food Products of Animal Origin

  • Oh, Mi-Hwa;Ham, Jun-Sang;Seol, Kuk-Hwan;Jang, Ae-Ra;Lee, Seung-Gyu;Lee, Jong-Moon;Park, Beom-Young;Kang, Eun-Sil;Kwon, Ki-Sung;Hwang, In-Gyun
    • 한국축산식품학회지
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    • 제31권1호
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    • pp.40-46
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    • 2011
  • The growth profile of Bacillus cereus in ready-to-eat (RTE) food products of animal origin was examined under different temperature and incubation conditions. In sandwiches and Kimbab, B. cereus did not grow or exhibited only minimal growth at 4 and $10^{\circ}C$, but it grew rapidly at ambient temperature. In sandwiches, B. cereus did not grow efficiently at $25^{\circ}C$, however, in ham, the main ingredient of sandwiches, B. cereus growth was observed at the same temperature, with bacterial levels reaching 7.94 Log CFU/g after incubation for 24 h at $25^{\circ}C$. Toxigenicity of B. cereus was observed only at temperatures above $25^{\circ}C$. In Kimbab, B. cereus produced toxin after 9 h at $30^{\circ}C$ and after 12 h at $25^{\circ}C$. Ingredients of sandwiches and Kimbab were collected from 3 different Korean food-processing companies to investigate the source of contamination by B. cereus. Among the 13 tested food items, 6 items including ham were found to be contaminated with B. cereus. Of these ingredients, B. cereus isolates from 3 items produced enterotoxins. None of these isolates harbored the emetic toxin-producing gene. The findings of the present study can be used for risk assessments of food products, including ham and cheese, contaminated with B. cereus.

중국의 지속적 경제발전에 관한 연구: 한국의 경제발전 경험을 바탕으로 (A Study on the Sustainable Development of China's Economy: based on the Experiences of South Korea's Economic Development)

  • 주성환;권선희
    • 국제지역연구
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    • 제15권3호
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    • pp.325-348
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    • 2011
  • 본 연구는 중국이 지속적 경제발전을 이루기 위한 발전방향이 무엇인가를 경제발전이론 및 한국의 경제발전경험과 비교하여 분석하였다. 경제발전이론에 의하면 한 국가의 경제발전 자본과 노동의 생산성, 그리고 잔차(residual) 등에 의해 결정된다. 따라서 중국이 지속적 경제발전을 위해서는 교육의 확대를 통해 인적자본을 육성하여야 하는데, 교육의 확대는 정치의 민주화를 초래한다. 또한 경제발전의 큰 부분을 차지하는 쏘로우 잔차는 그 사회의 기술수준에 의해 결정되는데, 기술수준의 진보는 민주화의 확산을 불러오게 된다. 한편 중국의 지속적 경제발전 방향을 한국의 경제발전경험에서 찾아보면, 한국은 정부의 시장개입으로 1997년 말 IMF 경제위기에 빠지게 되었는데 정치적 민주화와 함께 자유시장경제의 운영으로 지속적인 경제발전을 이어가고 있다. 한국은 정부가 정부개입에 따른 시장실패를 인정하고 자유시장과 민주화를 통해 문제를 해결한 드문 사례 중 하나이다. 결과적으로 중국이 지속적 경제발전을 이루기 위해서 시장경제의 확대와 민주주의제도의 발전이 이루어져야 할 것이다.

신뢰성 성장관리 시험의 시험 시료 수 결정 방안 (A Method of Determination of the Number of Tests for Reliability Growth Management)

  • 서양우;최대웅;엄천섭;김용근;김정태
    • 한국국방기술학회 논문지
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    • 제5권1호
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    • pp.1-6
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    • 2023
  • 무기체계 개발기간을 고려한 신뢰성 성장관리 시험기간을 설정하여 시험 시료 수를 산정하였다. 최적의 신뢰성 성장관리 시험 설계 조건은 신뢰도 80%, 신뢰수준 60%, 시험기간 6개월이었다. 이 때, 고장이 0번 발생하는 경우 시험 시료 수는 4개, 고장이 1번 발생하는 경우 시험 시료 수가 9개가 필요한 것으로 분석되었다. 본 논문에서 제시한 시료 수 결정 방안을 활용하면, 탐색개발 단계에서 체계개발 단계로 전환 시 신뢰성 성장관리 시험 시료 수 예산을 확보하는데 근거로 활용 가능하다.

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Effects of different copper sources (inorganic and organic) on the growth performance, fecal excretion, intestinal morphology, and health in growing pigs

  • Kim, Minji;Jung, Hyunjung;Seong, Pil-Nam;Jeong, Jin Young;Baek, Youl-Chang;Park, Seol Hwa;Ryu, Chae Hwa;Kim, Ki Hyun;Chun, Ju Lan;Oh, Sang-Ik;Kim, Byeonghyeon
    • 농업과학연구
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    • 제48권3호
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    • pp.447-454
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    • 2021
  • This study was conducted to evaluate the effects of different copper sources (inorganic and organic) on the growth performance, fecal copper excretion, intestinal morphology, and health in growing pigs. A total of 40 growing pigs (30.22 ± 1.92 kg) were randomly assigned to 5 dietary treatments: a basal control diet (CON), 4 experimental diets supplemented with either copper sulfate (CuSO4), Cu-glycine complex (CuGly), Cu-amino acid complex (CuAA), or Cu-hydroxy-4-methylthio butanoate chelate complex (CuHMB) at 100 ppm, respectively. At the end of the study (28 days), fecal and blood samples were collected, and the pigs were slaughtered to determine the intestinal morphology. During the 28 days of the experimental period, pigs fed the inorganic and organic copper showed a higher average daily gain (p < 0.01) and gain feed ratio (p < 0.01). There were no differences in mineral concentrations of the serum; however, the copper concentration of the feces was lower (p < 0.01) in the CuAA and CuHMB groups. The intestinal morphology and blood profiles did not significantly differ between the groups. In conclusion, the organic copper sources (CuAA and CuHMB) can be used as a growth promoter to replace the CuSO4 without any negative effects on health in growing pigs and to reduce fecal copper excretion.

국가발전과 지역균형발전에 관한 연구 - 경제성장과 지역균형발전의 상관관계를 중심으로 - (A Study on National Development & Balanced Development by Region - Mainly Interrelation between Economic growth and Balanced Regional Development -)

  • 김남일
    • 한국컴퓨터정보학회논문지
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    • 제10권2호
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    • pp.205-213
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    • 2005
  • 지역균형발전이란 지역간 경제적 생산성 및 소득의 격차를 줄이고 국민들이 어느 지역에서나 비슷한 수준의 소득으로 비슷한 생활수준을 누릴 수 있게 한다는 점에서 경제적, 사회적으로 큰 의미를 가진다 그러나 우리나라는 지난 30여년동안 고도경제성장 위주의 국가경제 정책과 정치, 사회의 구조적 요인으로 인하여 서울을 중심으로 한 수도권 지역으로의 경제력 및 개발이 편중되면서 지역간 불균형 성장이 야기되어 국가발전에 커다란 장애요인으로 대두되었다 특히 지역간 불균형성장은 국민경제의 효율적인 자원배분을 왜곡시키고 특정지역주민들의 소외의식을 야기하였으며 이로 인해 사회적, 정치적 문제로 항상 비화되어 국민통합을 저해하는 사회적 갈등을 심화 시켰다 따라서 본 연구의 주된 내용은 국가발전의 개념을 구성하는 경제성장과 지역균형발전 관계를 규명하는데 있으며, 연구를 구체화하기 위한 분석의 대상을 경제성장과 지역간 인구 및 생활 편의시설의 변화 추이를 통한 지역간 인구격차 분석과 지역간 생활편익시설의 격차 등을 분석대상으로 삼았다. 분석을 위한 공간적 범위는 대한민국 국토 전역을 대상으로 삼았으며. 연구의 시간적 범위는 경제개발 5개년 계획을 추진하였던 1962년부터 지역균형개발을 실시하였던 2001년까지 10년 단위를 설정하였다.

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Milk-Derived Growth factors as Neutraceuticals

  • Kang, Shin-Ho
    • Journal of Dairy Science and Biotechnology
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    • 제25권1호
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    • pp.27-31
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    • 2007
  • Colostrum has lots of bioactive components and many growth factors including insulin-like growth factors, transforming growth factors and epidermal growth factor. Colostrum and milk derived growth factors widely mediate the growth of overall development and could be used as treatment of gastrointestinal disorder, wound repair process, bioacrivity in the neonatal GI tract and induction of oral tolerance. It is possible that milk derived growth factors as potential neutraceuticals for the specific consumers may have a great role in future food industry.

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