• International Journal of Industrial Entomology and Biomaterials
• /
• 제25권2호
• /
• pp.159-162
• /
• 2012

The Chinese windmill butterfly, Atrophaneura alcinous, is an important butterfly for exhibition in butterfly garden. The objective of this study was to determine the effect of temperature on A. alcinous in the laboratory. Development of A. alcinous reared on leaves of Aristolochia contorta was investigated at five constant the laboratory condition (20, 22.5, 25, 27.5 and $30^{\circ}C$) and at relative humidity of 60% with a photoperiod of 14:10 (L:D). Temperatures have been suggested as an important determinant of developmental rate, lifespan and mortality in invertebrates. As the temperature increased, the length of the developmental period gradually decreased. The developmental time (pupation) from egg hatching to pupation was respectively 25.8, 23.6, 19.6, 15.5, and 12.9 days at the temperatures of 20, 22.5, 25, 27.5 and $30^{\circ}C$. And pupation was respectively 40.0, 30.0, 63.4, 50.0, 23.3% at the temperatures of 20, 22.5, 25, 27.5 and $30^{\circ}C$. The developmental threshold temperature estimated for egg-to-pupae was 10.8, with a thermal constant of 230.4 degree-days. Therefore, the optimal developmental temperature for A. alninous was determined to be $25^{\circ}C$. To compare the effects of the total duration of chilling on the termination of diapause, larvae were subjected to a temperature of $8^{\circ}C$ from 60 to 120 days. The rate of termination of diapause was significantly higher at 60 days compared to other incubation period.

• 생명과학회지
• /
• 제10권1호
• /
• pp.1-6
• /
• 2000

Larval development, adult longevity and oviposition of the beet armyworm, Spodoptera exigua H bner was studied at 16, 20, 25 and 3$0^{\circ}C$ with a 16L: 8D photoperiod. Egg hatchability of S. exigua was the highest at 3$0^{\circ}C$ and reduced with decreasing temperature. Egg period was the shortest at 3$0^{\circ}C$ and prolonged with decreasing temperature. Percent pupation was became higher at higher temperature form 23.2% to 94.0%. Developmental period of larva was the shortest at 3$0^{\circ}C$, but extended with decreasing temperature. Adult emergence ratio was the highest at 3$0^{\circ}C$ and reduced with decreasing temperature. The mean pupal period was 35.2, 14.4, 7.8 and 5.0 days at 16, 20, 25 and 3$0^{\circ}C$, respectively. Relationships between constant temperature and the developmental velocity of egg, larva and pupa were linear. Developmental threshold temperature seems to be 13.3 8$^{\circ}C$ for egg, 14.02$^{\circ}C$ for larva, 14.09$^{\circ}C$ for pupa, and 13.84$^{\circ}C$ for egg the adult. Estimated value of the total effective temperature for completing each stage was 36.89 day-degree for egg, 155.72 day-degree for larva, 79.20 day-degree for pupa, and 273.41 day-degree for egg to adult. Female longevity varied to temperature from 11.4 days at 16$^{\circ}C$ to 5.8 days at 3$0^{\circ}C$, and male longevity was longer than that of female. Preoviposition period was the shortest at 3$0^{\circ}C$, but prolonged with decreasing temperature. It was about 2.7 times longer at 16$^{\circ}C$ than that at 3$0^{\circ}C$. Number of eggs per female was the highest at $25^{\circ}C$, followed by 20, 30 and 16$^{\circ}C$.

• 한국경제지리학회지
• /
• 제6권2호
• /
• pp.257-292
• /
• 2003

본 연구는 목기 수공업을 통해서 전통 수공업의 현황과 육성정책 및 방향을 모색하였다. 인류는 석기문화를 형성하였고 아울러 목기문화도 병용하였다. 목기문화는 보존이 불가능하여 곧 칠기 출현의 계기가 되었다. 옻칠은 방부, 방수의 역할을 함으로써 해서 오랫동안 보존이 가능하게 되었다. 목기는 삼국시대, 고려, 이조시대를 통하여 상용으로 널리 쓰였으나, 1900년대 이후 스테인 그릇, 플라스틱 그릇 등 저가의 상품이 등장하면서 쇠퇴의 길을 걸었으나 전통산업으로서 목기수공업을 고부가가치의 산업으로 육성할 수 있는 정책과 방향이 모색되어야 한다.

• Molecules and Cells
• /
• 제41권8호
• /
• pp.753-761
• /
• 2018

Tumor necrosis factor receptor-associated factor 6 (TRAF6) is identified as a signaling adaptor protein that regulates bone metabolism, immunity, and the development of several tissues. Therefore, its functions are closely associated with multiple diseases. TRAF6 is also involved in the regulation of hematopoiesis under steady-state conditions, but the role of TRAF6 in modulating hematopoietic stem and progenitor cells (HSPCs) during the developmental stages remains unknown. Here, we report that the deletion of TRAF6 in hematopoietic lineage cells resulted in the upregulation of HSPCs in the fetal liver at the prenatal period. However, in the early postnatal period, deletion of TRAF6 drastically diminished HSPCs in the bone marrow (BM), with severe defects in BM development and extramedullary hematopoiesis in the spleen being identified. In the analysis of adult HSPCs in a BM reconstitution setting, TRAF6 played no significant role in HSPC homeostasis, albeit it affected the development of T cells. Taken together, our results suggest that the role of TRAF6 in regulating HSPCs is altered in a spatial and temporal manner during the developmental course of mice.

• 한국전문물리치료학회지
• /
• 제6권1호
• /
• pp.47-61
• /
• 1999

The purpose of this study was to investigate factors influencing on the early treatment of children with developmental disability. Data was collected from 102 mothers of children with developmental disability who were treated at 4 rehabilitation facilities in Kyunggi-Do and Kangwon-Do. The results were as follows: 1) Of a total of 102, 63 children began to receive rehabilitation therapy during the period 0~12 months (early treatment group), 38 children after 1 year of age (delayed early treatment group). 2) There were statistically significant differences between the early treatment group and delayed early treatment group for prematurity, low birth weight, the time to discover developmental abnormalities, the time of first diagnosis, and first treatment (p<0.05). 3) There were no statistically significant differences in the two groups for level of education, economic status, risk factors (except prematurity and birth weight), home care, family's cooperation and commuting time (p>0.05). Based on this study, the important factors for early treatment were early detection, early diagnosis and constant follow-up for high-risk babies.

• Child Health Nursing Research
• /
• 제9권3호
• /
• pp.285-293
• /
• 2003

Purpose: This study was conducted to identify behavioral items for Korean infants under 24months by naturalistic observation. These items will be the basis for developmental scale for Korean infants. Method: Data were collected by observing and interviewing fifty one infants and their mothers during the period from November 15 to December 14, 2003. Raw data in descriptive form were obtained by unstructured naturalistic observation, and were reformed to behavioral items through discussion with professors in pediatric nursing and experienced nurses in child care department. Also, behavioral items were classified into five developmental areas. Result: Total number of behavioral items was two hundreds and thirty eight. 52 items for motor development, 66 items for personal-social, 40 items for hearing and speech, 41 items for eye-hand coordination, and 39 items for performance. Conclusion: This is meaningful that fundamental items for Korean developmental scale for infants were identified by observing behaviors of Korean infants. On the basis of these items, average age will be calculated for passing each item by testing Korean infants. We hope to develop Korean infant developmental scale as a final outcome in the future research.

• 대한소아치과학회지
• /
• 제3권1호
• /
• pp.48-51
• /
• 1976

Surveying the developmental degree of the crowns of mandibular first bicuspid in 566 korean children (264 males and 302 females) from 3 to 7 years of age by oblique cephalogram, the author got to the following results. 1. The developmental degree of the tooth crown of mandibular first bicuspid was earlier in female than in male. 2. The period of complete development of the crown of mandibular first bicuspid was 7 year 1 month in male and 6 year 3 month in female. 3. There was no significant difference in the period of complete development of the tooth crown compared with that of Japanese and American children.

• 생명과학회지
• /
• 제10권2호
• /
• pp.164-168
• /
• 2000

To understand the biological characteristics of Corythucha ciliata occurring in Korea, developmental periods and its susceptibility to several insecticides were examined under growth chamber condition at $25^{\circ}C$. It took 11.1 day from egg to hatch. And duration of each stage up to the 5th nymph after hatching was 4.0, 2.1, 2.0, 2.9, and 4.0 days, respectively. Total duration from egg to adult was 26.1 days, preoviposition period was 12.2 days, and average number of eggs laid by a female was 83.0. Sex ratio of female was 51.6% and lifespan of female adult was 43.2% days. LC50 value of deltamethrin and esfenvalerate were 0.8 and 0.9 ppm, respectively. Insecticidal effects were better in pyrethroids than organophosphates and carbamates.

• 한국응용곤충학회지
• /
• 제49권3호
• /
• pp.199-204
• /
• 2010

큰이십팔점박이무당벌레(Henosepilachna vigintioctomaculata (Motschulsky))의 강릉지역 발생소장과 발육단계별 감자잎 섭식량 및 온도별(10, 15, 20, 25, $30^{\circ}C$) 발육소요기간을 조사하였다. 큰이십팔점박이무당벌레는 연 3회, 즉 5월 하순, 6월 하순 및 8월 하순에 발생하였으며, 특히 5월 하순부터 7월 중순까지 높은 밀도로 발생하여 감자 식물체를 집중적으로 가해하였다. 발육단계별 감자잎 섭식량은 유충의 영기가 진전될수록 많았으며, 4령 유충기에 가장 많은 섭식량을 보였다. 큰이십팔점박이무당벌레 부화율과 우화율은 각각 $10^{\circ}C$ 및 $30^{\circ}C$에서는 매우 낮았고 $20{\sim}23^{\circ}C$에서 가장 높았다. 알에서 성충으로 우화되기까지 발육단계별 생육기간은 온도가 증가함에 따라 감소하였는데, $10^{\circ}C$에서 90일 정도로 매우 느렸으며 $20^{\circ}C$에서는 40여일, $25^{\circ}C$에서는 25일이 소요되었다. 또한 발육영점온도와 유효적산온도는 알에 대해서 $7.3^{\circ}C$와 83.3 DD, 유충에 대해서 $5.2^{\circ}C$와 294.1 DD, 번데기에 대해서 $6.2^{\circ}C$와 97.1 DD이었다.

• 대한감각통합치료학회지
• /
• 제21권2호
• /
• pp.24-34
• /
• 2023

목적 : 본 연구를 통하여 발달장애 아동에게 적용한 전정감각, 고유감각 중심의 감각통합 중재가 공간 지각력, 시-운동 협응력에 어떠한 영향을 미치는지 알아보고자 한다. 연구방법 : 본 연구는 발달 장애 아동 만 5~6세 아동 3명을 대상으로 개별실험연구방법(single subject research design) 중 ABA' 설계를 사용하였다. 매주 3회기씩 6주간 30분씩 총 18회기를 진행하였다. 기초선 3회기와 재기초선 3회기는 중재 없이 공간 지각력과 시-운동 협응을 평가하였고 중재기 12회기는 전정감각, 고유감각 위주 감각통합 중재를 실시하였다. 중재의 효과를 알아보기 위한 매회기 측정으로는 전산화 인지 프로그램(CoTras-C)을 이용하였으며, 공간지각력 평가를 위한 퍼즐하기, 시-운동 평가를 위한 미로 찾기를 실시하였다. 연구의 사전, 및 사후 평가는 카우프만 아동용 지능 검사(Kaufman Assessment Battery for Children; K-ABC II)와 한국판 시지각 발달 검사(Korean-Developmental Test of Visual Perception-2: K-DTVP-2)의 하위평가를 이용하였다. 결과 : 발달장애 아동에게 전정감각, 고유감각 중심의 감각통합중재를 적용하기 전보다 후에 공간지각력과 시-운동 협응력 점수에 유의한 차이가 있었고, 세 아동 모두 통계적으로 유의한 차이가 있었다. 결론 : 전정, 고유감각 중심의 감각통합 치료가 발달장애 아동의 공간지각력과 시-운동 협응력에 유의미한 영향을 미쳤다.