• Korean journal of applied entomology
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• v.37 no.1
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• pp.49-52
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• 1998

This study was carried to investigate the seasonal occurrence of Step17~initisp yr-ioide.~ Scott (Hemiptera : Tingidae) in a azalea field at Wan.1~. Chonbuk, Korea in 1994. S, pyr-ioic1c.c had LIP to four generations in Chonbuk. The peaks of adult population for each generation were late May, mid-July. late-August, iuid mid-October. respectively. S. pyrioidrs overwintered as egg stage within the midribs of the host leaves.

• Journal of the Korean Society of Radiology
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• v.83 no.6
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• pp.1380-1384
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• 2022

Endometrial carcinoma is a common gynecologic malignancy; however, metastasis to the small bowel is rare. Metastatic endometrial carcinoma usually occurs through local extension rather than distant metastasis. Isolated small bowel metastasis is extremely rare; further, intussusception with resultant intestinal obstruction is not common. We report the imaging findings of a patient with isolated small bowel metastasis of endometrial carcinoma with resultant jejunojejunal intussusception.

• The Science & Technology
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• v.28 no.8 s.315
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• pp.31-33
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• 1995

우리나라 최초로 설치되니 대형 플라스마 발생기가 「한빛」장치가 지난 6월21일 준공되었다. '제 4의 물질상태'라고 불리는 플라스마 발생기기「한빛」장치는 미국 MIT대학에서 3천만 달러를 들여 시설한 것을 영구임대 형식으로 무상 임대받아 한국에 이전, 시설한 것이다. 9월부터 본격 가동될 「한빛」의 운영계획을 준공하기까지 산파역을 맡았던 기초과학지원연구소장 최덕인 박사에게 들어보았다.

• Korean journal of applied entomology
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• v.34 no.3
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• pp.229-233
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• 1995

The life history, seasonal occurrence of larval population and natural enemies of Tea leaf roller (Caloptilia theivora (Walshingham) were investigated in field-age. C. theivora had 6 generations a year. The developmental periods from egg to adult emergence were 32.1~38.6 days in spring and fall, and 24.8~32.7 days in summer. The average longevities of adults were 8.4~14.5 days in spring and fall, and 6.3~8.6 days in summer. The average number of eggs laid by a female were 55~71 throughout the season. Larval population density of C. theivora showed 3~4 peaks from middle may in 1992 and 1993. However, population density of 194 was pretty low in early season and exhibited a peak in late September-early October. C. theivora overwintered in pupal stage on the leaves. Four hymenopterous parasitoids of C. theivora larvae were identified ; they are Stenomesius japonicus (Ashmead), Sympiesis ringoniellae Kamijo, Elasmus sp., and S. dolichogaster Ashmead which is dominant.

• Journal of the Korean Society of Radiology
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• v.84 no.1
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• pp.110-126
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• 2023

Because of their small size, small bowel malignancies are often easily missed when radiologists read CT images, which can lead to errors in the normal small bowel due to their similar enhancement to the small bowel or non-specific enhancement. In addition, small bowel malignancies are sometimes mistaken for masses of other origins, such as the uterus, rectum, or omentum. In this article, we describe various small-bowel malignancies, their mimicking lesions and the typical and atypical features on CT imaging along with their clinical manifestations.

• Korean journal of applied entomology
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• v.33 no.3
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• pp.159-162
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• 1994

An ecological skdy of the root-knot nematode, Meioidogyne hapio on medicinal herbs in Eui-sung area was pelformed seasonal occurrence of M hapla on Paeonia iactffiora showed four peaks In a year at the field: early Apnl. mid June, late July, late August. Soil characteristics affected nematode d~shibution and poplation Juvenlle population of the nematode was the highest in sandy and sandy loam sail. The number of the nematode lawae was 10G4-1486 per 300mi of sod wllhin 15cm from the sulfate at P. ioctitiora held. The ncrnatode was distributed even under 50cm.

• Korean journal of applied entomology
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• v.29 no.4
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• pp.269-276
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• 1990

This study investigated host range, seasonal occurrence and developmental characteristics of Ceroplastes pseudoceriferus Green on persimmon trees. The host plants covered 34 families and 66 species, including newly recorded species of Chenopodum album var. centrorubrum, Glycine max, Begonia semperflorens, Pharbitis nil, Perilla frutescens var. japonica and Erigeron canadensis. There was one generation of C. pseudoceriferus a year with larval stage expanding from mid-June to mid-October. Average number of eggs laid per female was 1,073$\pm$177.3. Hatching rate was 97.3% and was not affected by temperatures and photoperiods. Stadium varied as 23.4 days in eggs, 128.3 days in larvae and 213.3 days in female adults including overwintering periods at natural condition.

• Korean journal of applied entomology
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• v.34 no.2
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• pp.106-111
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• 1995

This study was carried out to investigate the effect of mass trapping with synthetic sex pheromone on seasonal occurrence of, the Beet amyworm (BAW) Spodoptera exigua, and on suppress of their density in Chonnam province from 1992 to 1994. Adult males of BAW were colllected by the trap from early through early November. The numbers began to increase abruptly from early July, and forming three peaks on mid July, early August and early September. Yearly occurrence and the area damaged by the BAW varied in relation to weather condition. Especially, low temperature and heavy rainfall in August 1993 seems to have affected to reduce the BAW population. The pheromone trap attracted higher numbers (1.5~2.3 times) of BAW adult than ordinary light rap. And the BAW population in vinyl hose was noticeably reduced when more than 10 pheromone traps were operated per 330$\m^2$ of vinyl house.

• Korean journal of applied entomology
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• v.32 no.3
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• pp.285-290
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• 1993

This study was conducted to mvestigate the natural enemies of chestnut gall wasp, Dryocosmus kuriphilus Yasumatsu and their seasonal prevalence of adult emergence. The natural enemies Identified were as follows: Torymus sinensis, Torymus geranii, Eutytoma Brunniventris, Eurytoma s Setlgera, Megastigmus nipponicus, Megastigmus maculipennis, Ormyrus flavrtrbwlis, Ormyrus punctiger, Eupelmus urozonus, Euplmus sp., Sycophila vanegata, and Diptem sp. Among these natural enemies of the chestnut gall wasp, Torymus sinensis, Eurytoma setigem, and Eupelmus sp. were newly recorded this time In Korea. The seasonal prevalence of parasItic wasps have been investigated in Kyonggi ProvInce. Torymus sinensis which seems to be the most dominant parasitoid emerged from withered galls formed in the previous year April to eary May. The four parasitoids such as Torymus geranii, Sycophila variegata, Eupelmus urozonus and Eupelmus sp. emerged from withered previous year galls in April to May and also from current year galls in June to August. The other parasitoids emerged from only current year galls in June to August.

• Korean journal of applied entomology
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• v.43 no.1
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• pp.49-54
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• 2004

The oriental tobacco budworm, Helicoverpa assulta (Guenee) is a major pest of red pepper in Korea. Insecticide spray is a prevalent control tactic in most farms, but an effective control is difficult because the larvae are protected inside the fruit. Objective of this study was to investigate the seasonal occurrence of the male moths using pheromone trap and to evaluate the control efficacy of insecticide applications based on the trap catch data at red pepper fields in Suwon. The results of pheromone trap catch during three years showed that the moth flight activity occurred from late May to early October. Peak periods of the adult flight, which are indicators of each generation, occurred in late June, late July-early August, and late August-early September. Trap catches during the overwintering and first adult generation were closely linked with subsequent damage. Although the trap catch during the second generation was higher than the previous generations, damage level caused by this generation larvae was low. Experiment results revealed that fruit damage by H. assulta could be effectively reduced by five sprays of insecticides based on the trap catch data throughout the season.