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

• Neonatal Medicine
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• 제16권1호
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• pp.10-17
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• 2009

The immature neonatal brain is susceptible to the development of seizures. Seizures occur in 1% to 5% of infants during the neonatal period. Neonatal seizures are most commonly associated with serious acute illnesses, such as hypoxic-ischemic encephalopathy, birth trauma, metabolic disturbances, or infections. Thus, newborn infants with seizures are at risk for neonatal death and survivors are at risk for neurologic impairment, developmental delay, and subsequent epilepsy. Experimental data have also raised concerns about the potential adverse effects of the currently used anticonvulsants in neonates on brain development. Therefore, in the management of neonatal seizures, confirmatory diagnosis and optimal, but shorter, duration of anticonvulsant therapy is essential. Nevertheless, there has been substantial progress in understanding the developmental mechanisms that influence seizure generation and responsiveness to anticonvulsants. The currently used therapies have limited efficacy and the treatment of neonatal seizures has not significantly changed in the past several decades, This review includes an overview of current approaches to the treatment of neonatal seizures.

• 한국발생생물학회:학술대회논문집
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• 한국발생생물학회 2005년도 제5회 발생공학 국제심포지엄 및 학술대회
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• pp.101-101
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• 2005

• 한국발생생물학회:학술대회논문집
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• 한국발생생물학회 2005년도 제5회 발생공학 국제심포지엄 및 학술대회
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• pp.102-102
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• 2005

• 아동학회지
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• 제19권1호
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• pp.155-167
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• 1998

The purpose of this study was to analyze the quality of the constructive play of 3, 4 and 5 year-old children. The researchers used unit blocks as the instrument because they are the most representative examples of constructive play materials. The subjects were 73 children enrolled in a half-day early childhood education program. The children's block play was videotaped 8 times, for a total of 330 minutes. The videotapes were transcribed and assessments were made on the children's 233 constructions in terms of the developmental stage of block play, the variety of materials used, play duration, and play intensity. The data were analyzed through two-way ANOVA to check age and sex differences. The results showed that children's developmental stages of block play were low on the average and that girls did not show an active interest in block play. The results also implied that block play developed by play experience rather than by age. Therefore, this study was interpreted to highlight the importance of teachers' understanding, planning, and mediation of block play in order to induce high-quality constructive play.

• Journal of Korean Neurosurgical Society
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• 제39권4호
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• pp.310-313
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• 2006

Although lipomyelomeningocele and dermoid cyst are formed during a similar embryologic developmental stage of 'neural tube formation', they are caused by entirely different embryologic mechanisms. We encountered a case, which has not been previously reported, that had a lumbar subcutaneous dermoid cyst associated with lipomyelomeningocele. A 52-year-old man presented with a slowly growing lumbar mass of 3 years duration, which had been present since birth. Lumbosacral magnetic resonance imaging[MRI] showed lipomyelomeningocele at the L3, 4 and 5 levels and a subcutaneous cystic mass of high signal intensity on the T2 weighted image and iso or low signal intensity on the T1 weighted image. He underwent total resection of the lumbar subcutaneous mass. Intraoperative findings and histological examination were consistent with the preoperative diagnosis of a 'dermoid cyst'. We demonstrate that the formation of a dermoid cyst might coexist with lipomyelomeningocele during the embryologic developmental stage.

• 한국응용곤충학회지
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• 제55권4호
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• pp.445-452
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• 2016

야외에서 채집된 멸강나방(Mythimna separata) 유충 및 번데기로부터 우화한 기생파리를 NCBI 데이터베이스에 등록되어 있는 유전자 염기서열 정보(16S, 18S, 28S 그리고 CO I)와 비교하여 긴등기생파리(Exorista japonica)로 동정하였다. 긴등기생파리의 알부터 성충우화까지 발육 기간을 담배거세미나방(Spodoptera litura) 5~6령 유충을 숙주 곤충으로 하여 7개 항온조건(16, 19, 22, 25, 28, 31, $34{\pm}1^{\circ}C$)에서 조사하였고 온도에 따른 발육율과 발육완료 모델들의 매개변수들을 추정하였다. $34^{\circ}C$를 제외한 다른 항온 조건에서 알부터 성충우화까지 발육이 가능하였다. 알부터 번데기까지 발육 기간을 보면 $16^{\circ}C$(23.4일)에서 가장 길었고 $34^{\circ}C$(8.3일)에서 가장 짧았으나, 번데기부터 성충까지 발육기간은 $28^{\circ}C$(7.3일)에서 가장 짧았다. 알부터 성충우화까지 전체 발육 기간은 $31^{\circ}C$에서 16.3일로 가장 짧았고 $16^{\circ}C$에서 45.4일로 가장 길었으며 온도가 상승함에 따라 발육기간은 짧아졌다. 선형 발육율 모델을 이용하여 추정한 알부터 성충우화까지 발육영점온도와 유효적산온도는 각각 $7.8^{\circ}C$, 370.4DD 였다. 4개 비선형 발육율 모델(Briere 1, Lactin 2, Logan 6, Performance) 중에서는 Briere 1 모델($r^2_{adj}=0.96$)이 가장 높은 해석력을 보여주었다. 동일 연령 집단의 발육완료 분포를 설명하기 위해 사용된 3개 모델(2-parameter Weibull, 3-parameter-Weibull, Sigmoid)은 모두 같은 결정력($r^2_{adj}=0.90$)을 보였다.

• 음성과학
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• 제15권4호
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• pp.189-197
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• 2008

In the process of speech therapy, fluency is acquired and speech rate increases in the process when the behavioral modification strategy, inducing speech fluency by making speech rate slower intentionally in an early stage, is applied. Therefore, the purpose of this study was to investigate the pause characteristics in slowed speech intentionally of treated stutterer. In this study, 10 developmental stutterers who had well established fluency in speech were involved. We had collected each 200 syllables sample of intentionally much slowed speech and a little slowed one in reading task. To measure the features of pause, total frequency of pauses, total durations of pauses, average duration of pauses and proportions of pause were investigated. The findings were as follows: Both the total durations and total frequency of pauses of much slowed speech were higher than that of a little slowed one. However, both the average duration and proportions of pauses of much slowed speech were not significantly higher than that of a little slowed one.

• 아동학회지
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• 제26권4호
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• pp.231-245
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• 2005

Recruited from Korean-Chinese preschools and elementary schools in Shenyang and Harbin, China, 150 caregivers of Korean-Chinese children separated from their parents provided general information about the separation(reason and duration of parent-child separation, present location of parents, etc.). They also filled out information about children's responses as to when the children had been separated and about children's behavior problems(Behavior Rating Scale, Behar & Stringfield, 1974). Results showed that most of the children were cared-for by relatives. Caregivers reported that the separated children adjusted positively to parent-child separation and were not anxious about living with a caregiver. There were significant differences in children's behavior problems by duration of separation from mother and frequency of contact between parent and caregiver.

• 수면정신생리
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• 제16권2호
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• pp.56-60
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• 2009

Excessive daytime sleepiness in childhood might be abnormal phenomenon and often related to the sleep disorders or insufficient sleep duration. The most common cause of excessive daytime sleepiness would be insufficient sleep. However, narcolepsy, idiopathic hypersomnia, circadian rhythm sleep disorders, medication, medical illness and other sleep disorders that could cause insomnia and poor quality of sleep also result in excessive daytime sleepiness. The misdiagnosed and untreated excessive daytime sleepiness in childhood can lead to serious developmental and educational problem.