• 제목/요약/키워드: Growth Changes

검색결과 5,683건 처리시간 0.037초

두개안면골(頭蓋顔面骨)의 성장변화(成長變化)에 관(關)한 연구(硏究) (CRANIOFACIAL GROWTH CHANGES FROM SEVEN TO ELEVEN YEAR OLD CHILDREN)

  • 이기수
    • 대한치과교정학회지
    • /
    • 제8권1호
    • /
    • pp.39-48
    • /
    • 1978
  • The growth changes in craniofacial depth and height from seven to eleven years of age have been studied in thirty two Korean children, consisted of seventeen boys and fifteen girls. The data was obtained from lateral cephalometric radiographs analyzed by the Coben's coordinate system, and the main conclusions might be summarized as follows. 1. Among the craniofacial depth increments the lower facial depth dimension increased the most, mid-facial depth dimension increased loss, and cranial depth dimension increased the least. 2. In spite of the increasing depth dimensions, the mid-facial depth proportion had a tendency to remain stable. 3. The degree of overbite increased markedly from seven to eleven years of age. 4. Increment in the total anterior facial height dimension was larger than that in the total posterior facial height, and the upper anterior facial height increased more than the lower anterior facial height. 5. The lower facial depth proportion increased markedly, and the convexity of the face was reduced significantly. 6. The posterior facial height tended to show small proportional changes. 7. The growth increments in craniofacial complex were larger in the facial height than in the facial depth.

  • PDF

식물생장조절제(植物生長調節劑)가 엽연초(葉煙草)의 엽록소(葉緣素) 단백질(蛋白質) 및 RNA의 감소(減少)에 미치는 영향(影響) (Effect of Plant Growth Regulators on Changes of Chlorophyll, Protein and RNA content in Tobaco-leaves Senescence)

  • 배효원
    • Applied Biological Chemistry
    • /
    • 제12권
    • /
    • pp.107-114
    • /
    • 1969
  • 생장조절제(生長調節劑) GA. IAA, Kinetin, Uracil 및 MH로 Nicotiana Tobaccum var. Virginica를 처리(處理)하여 황변현상(黃變現象)을 관찰(觀察)하여 다음과 같은 결과를 얻었다. 1) 엽연초엽황변시(葉煙草葉黃變時) Chlorophyll 감소(減少)에 따라 Protein 및 RNA의 감소(減少)도 병행(倂行)하였다. 2) GA, IAA, 를 처리(處理)한 엽(葉)은 Protein 과 RNA 의 감소(減少)가 억제(抑制)되고 MA로 처리(處理)된 엽(葉)은 오히려 무처리엽(無處理葉)봐 그들 성분(成分)의 감소(減少)가 심(甚)하였다. 3) 연초엽황변시(煙草葉黃變時) Chlorophyll a/b 비율(比率)의 변동(變動)과 protein 및 RAN 함량(含量)의 변동(變動)과는 아무런 상관관계(相關關係)가 없는것 같았다.

  • PDF

Structural Changes of Adhesive Discs during Attachment of Boston Ivy

  • Kim, InSun
    • Applied Microscopy
    • /
    • 제44권4호
    • /
    • pp.111-116
    • /
    • 2014
  • This study investigates the developmental pattern of adhesive discs (ADs) to highlight the ontogeny and structural changes that occur during the growth of Boston ivy. Initiation to postmortem features of ADs were examined through light and scanning electron microscopy. The study also reveals a new finding of the dislocation of peripheral tissues of adaxial origin. Four phases of attachment are suggested with regards to its climbing behavior: 1) pre-attachment, 2) upon attachment, 3) after attachment, and 4) final attachment. During initiation, several ADs originate from tendril primordia without epidermal differentiation. However, different growth rates in the epidermis results in completely different ADs. ADs were discerned by size, shape, and color during expansion, but cells in the adaxial surface remained alive longer than the other side. Upon contact, the ADs demonstrate simultaneous growth and deterioration, but once attachment is established the latter process subdues to final stages. Epidermal transformation, adhesive secretion, cellular disruption, and mechanical stress were essential for the self-clinging nature of Boston ivy. The post-attachment sequence is also believed to be critical in achieving maximum mechanical strength to provide extensive support. The developmental process of ADs is prompted by tactile stimulation but in a highly organized and systematic manner.

피복구성을 위한 신체비례 연구 -6세~24를 중심으로- (A Study on the Body Proporton for Clothing Construction)

  • 전경숙;이순원
    • 한국의류학회지
    • /
    • 제6권1호
    • /
    • pp.51-59
    • /
    • 1982
  • Growth is marked by changes in body shape as well as in body size. Increase in size is described quantitatively by increments over time : changes in shape are complex and perhaps are not possible to quantify satisfactorily. Simply to define or describe static body shape quantitatively is difficult, and traditionally simple ratios or indices have been used. In order to find out the body proportion and the body type of the Korean males and females from 6 to 24 years, the material of measurements obtained by the Korean Body-build Investigations (measured in 1979) was calculated and analyzed. The results are as follows: 1. The growth of the trunk part of the body precedes that of the lower part. Comparing the growth rate of male and female, the latter is higher than the former, especially in 12. 2. When a comparison is made between 6, 9, 12, 15 years and grown-ups(20$\~$24 years) with their respective stature's taken as 100, then values of these children are larger in the measurements related with head, acromial and waist height but smaller in lower extremities than these of the grown-ups. 3. Body proportion changes gradually from infant to adult body type indicating different phases each sex.

  • PDF

주택가격변동이 지방은행의 경영성과에 미치는 영향 (The Effect of Housing Price Changes on the Performance of Korean Regional Banks)

  • 한명훈;정헌용
    • 문화기술의 융합
    • /
    • 제7권2호
    • /
    • pp.165-170
    • /
    • 2021
  • 본 연구는 주택가격의 변화가 우리나라 지방은행의 경영성과에 미치는 영향을 DOLS 모형을 이용하여 분석하였다. 분석 결과, 주택가격변동률은 지방은행의 성장성, 수익성 및 건전성에 모두 통계적으로 유의한 영향을 미치지 못하는 것으로 나타났다. 거시경제변수 중에서 단기금리만이 어떠한 모형에서도 유의한 양(+)의 영향을 미치는 것으로 나타났다. 이는 단기금리가 상승하면 지방은행이 대출을 유의하게 증가시키고 이는 수익성의 유의한 증가를 가져오지만 건전성에는 유의한 부정적 영향을 미치는 것을 의미한다. 반면에 은행특성변수들은 대부분 지방은행의 성장성, 수익성 및 건전성에 유의한 음(-)의 영향을 미치는 것으로 나타났다.

제조업 에너지 생산성 분해분석 (A Decomposition Analysis of Energy Productivity Change in Korean Manufacturing Industries: A Distance Function Approach)

  • 김광욱;황석준
    • 자원ㆍ환경경제연구
    • /
    • 제24권2호
    • /
    • pp.411-433
    • /
    • 2015
  • 본 연구는 거리함수에 기초한 분해분석을 활용하여 표본기간 1995년부터 2009년 한국 14개 제조업의 에너지 생산성 변화요인을 분석한다. 산출거리함수를 적용한 분해산식은 기술적 성장에 따른 생산성 성장효과를 생산요소 및 에너지 믹스와 관련된 다양한 분해요인으로 세분화하는 장점이 있으며 추정결과를 요약하면 다음과 같다. 첫째 한국 제조업은 90년대 후반 이후 전반적인 에너지 생산성의 향상을 보였으며 표본기간 에너지 저소비형 산업이 경험한 경제적 성과가 핵심적인 요인으로 작용하였다. 둘째 생산프론티어의 성장을 의미하는 기술적 진보에 의한 에너지 생산성 성장이 크게 표출되었으며 효율성 개선을 통한 성장여지가 존재한다. 셋째 주요 생산요소인 노동 및 자본과 관련된 분해요인은 에너지 생산성 변화에 상호 상충된 영향을 미쳤으며 에너지 믹스에 의한 생산성 성장이 확인되었다. 다음으로 본 연구는 산업별 에너지 생산성 변화와 수출성장률의 관계를 추가적으로 분석하였으며 일부 에너지 집약 산업을 제외한 대부분의 산업부문에서 수출생산 성장률과 에너지 생산성의 성장 간 양(+)의 상관관계를 확인하였다.

경옥고가미방(瓊玉膏加味方)이 흰쥐의 성장(成長)에 미치는 영향(影響) (The Effect of KyungOcGogamibang on the Growth of the Rats)

  • 정봉균;윤혜진;이유진;강미선;백정한
    • 대한한방소아과학회지
    • /
    • 제23권1호
    • /
    • pp.141-158
    • /
    • 2009
  • Objectives The purpose of this study is to find out the effect of KyungOcGogamibang(KOGE) on the growth of rats. Methods First of all, we divided male Sprague-Dawley rats into 4 groups(KOGE1, KOGE2, KOGE3 and control group). Then KOGE1, KOGE2 and KOGE3 groups were administered with KOGE water extracts once a day at a dosage of 250, 500, 1,000mg/kg respectively for 3 weeks. The control group was administered with normal saline in the same manner. We measured the rat's body weight, amount of body weight increased, length of femur, serum GH, serum IGF-Ⅰ, serum TSH and serum testosterone after each week of administration. Results 1. There were significant changes of the rat's body weight, the length of the femur, the level of GH, IGF-Ⅰand TSH in KOGE1 groups. 2. There were significant changes of the rat's body weight, the length of the femur, the level of IGF-Ⅰand TSH in KOGE2 groups. 3. There were significant changes of the rat's body weight, the length of the femur, the level of IGF-Ⅰand TSH in KOGE3 groups. Conclusions According to the results above, rat in KOGE group have been increased their body weight, length of femur, serum GH, serum IGF-1 compared to the control group. This study shows that groups of KOGE have an effect on promoting the growth, thus it is expected to treat growth problems for children.

  • PDF

Various Characteristics of Hybrid between River Puffer, Takifugu obscurus and Tiger Puffer, T. rubripes, and Their Hybrid Triploid

  • Park, In-Seok;Lim, Sung Young;Lee, Tae Ho;Gil, Hyun Woo;Yoo, Gwang Yeol
    • 한국발생생물학회지:발생과생식
    • /
    • 제21권2호
    • /
    • pp.181-191
    • /
    • 2017
  • A comparison of the growth, hematological values, fatty acids, and gonadal and growth hormonal changes of river puffer, Takifugu obscurus, tiger puffer, T. rubripes, their hybrids (river puffer ${\times}$ tiger puffer) and hybrid triploids was performed during 3 months of their early growth period. Several features were observed during these 3 months: hybrids showed the highest levels of specific growth rate, 1.48%; hybrid triploids showed the smallest change in viscera fat (P<0.05), but GSI was not significantly different among groups (P>0.05). Considering hematological parameters, hybrid triploids had increased mean corpuscular volume and mean corpuscular hemoglobin (P<0.05), but other parameters were not significantly different between groups (P>0.05). With respect to fatty acids, puffer fish, hybrids and hybrid triploids contained fatty acids such as SFAs, MUFAs, n-3 PUFAs and n-6 PUFAs. There were significantly different amounts of total fatty acids between groups (P<0.05), however, rates of changes in fatty acids did not differ significantly between groups (P>0.05). Gonadal hormone (estradiol and testosterone) changes in the river puffer and tiger puffer were significantly higher than that observed in hybrids and hybrid triploids. The hybrids and tiger puffers had higher amounts of growth hormone (thyroid stimulating hormone and thyroxine) than the hybrid triploids and river puffers (P<0.05).

Aluminium이 팥(Vigna angularis) 유식물의 생장, 엽록소함량, ALAD활성 및 뿌리와 경엽부의 형태에 미치는 영향 (Effects of Aluminium on Growth, Chlorophyll Content, ALAD Activity and Anatomy of Root rind Shoot in Azuki Bean (Vigna angularis) Seedlings)

  • 구서영;홍정희
    • 한국환경과학회지
    • /
    • 제5권6호
    • /
    • pp.813-826
    • /
    • 1996
  • 발아후 7일된 팥유식물에서 alumlnlum(Al)이 생장, 엽록소 함량, ALAD활성 및 뿌리와 경엽부의 형태에 미치는 영향을 조사하였다. 저농도(50, 100 $\muM)의$ Al처리에 의해 뿌리와 경엽부의 신장이 매우 감소되었으며 농도가 증가함에 따라 생장이 더욱 억제되었다. 따라서 생장억제는 농도의존적이었다. 뿌리신장은 Al 처리 24시간에서 감소되었으며 7일간의 저농도처리에 의해 억제효과가 회복되는 경향을 보여주었다. Al의 독성증상과 생장반응은 경엽부에 비해 뿌리에서 더 크게 나타났다. Hematoxylin 염색법에 의해 Al 분포를 조사한 결과 Al은 근단을 통해 표피와 피층세포에 축적되어 있음을 알 수 있었다. 한편 Al처리는 엽록소함량을 감소시켰으며, ALAD활성 또한 억제시켰다. 엽록소 함량과 ALAD 활성 간에는 양의 상관관계가 나타났다. Al 처리에 의한 뿌리의 형태변화를 보면 표피세포 및 피층세포의 변형 또는 파괴가 관찰되었으며, 뿌리직경과 피층의 체적도 매우 감소되었다. 경엽부에서도 Al처리는 직경과 세포크기의 감소를 보여주었다. 그러나 잎에서의 형태적 변화는 엽록체수와 크기변화 이외에는 거의 관찰되지 않았다. 이와 같은 결과에서 Al의 독성효과는 1차적으로 뿌리에서 나타나며, 뿌리형태의 변화는 뿌리의 생장패턴과 관련이 있음을 알 수 있었다. 따라서 Al은 팥유식물에서 특히 뿌리의 형태와 기능적 손상을 일으키는데 큰 영향을 미치는 것으로 생각된다.

  • PDF

급격한 염분변화에 따른 담수어 3종의 프로락틴 및 성장호르몬 유전자 발현변화 (Changes in Prolactin and Growth Hormone Gene Expression in Three Freshwater Teleosts with Rapid Changes in Salinity)

  • 박우동;이철호;김대중;손영창
    • 한국수산과학회지
    • /
    • 제41권1호
    • /
    • pp.1-6
    • /
    • 2008
  • The changes in osmolality and the gene expression profiles of prolactin (PRL) and growth hormone (GH) with rapid changes in salinity were compared in the eel (Anguilla japonica), crucian carp (Carassius carassius), and masu salmon (Oncorhynchus masou). Fish stocked in freshwater (FW) were abruptly transferred to experimental tanks containing FW, 50% seawater (50% SW), or 100% SW (SW). Blood samples and pituitary glands were collected 2 and 24 hrs after the exposure. No mortality was observed in SW eel (n=6), whereas all of the crucian carp (n=6) and two masu salmon (n=6) exposed to SW died after land 24 hrs, respectively. The PRL mRNA levels of the eel and masu salmon decreased in 50% SW and SW compared to those of the fish kept in FW after 24 hrs, whereas the PRL levels of crucian carp were higher in 50% SW than in FW. Unlike the PRL mRNA levels, the GH mRNA levels of the eel did not differ significantly among three different salinities, while the GH mRNA levels of crucian carp and masu salmon increased significantly in 50% SW and SW after 24 hrs. The serum osmolalities increased marginally in the eel and masu salmon in 50% SW at 24 hrs (19% and 9%, respectively), whereas those of crucian carp increased abruptly in 50% SW (50% increase). These results suggest that the synthesis of PRL and GH is important in relation to the osmoregulatory system with environmental changes in salinity.