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Etiology of a Half Stem Rot in Sesame Caused by Fusarium oxysporum (Fusarium oxysporum에 의(依)한 참깨줄기반쪽썩음 병상(病狀)의 병원학적(病原學的) 연구(硏究))

  • Cho, Eui-Kyoo;Choi, Seong-Ho
    • Korean journal of applied entomology
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    • v.26 no.1 s.70
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    • pp.25-30
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    • 1987
  • An unusual disease syndrome, partial stem rot and final blight of the whole plants was observed in sesame, Sesamum indicum L., cultivar Pungnyeonkkae and Kwangsankkae grown in the field. Symptoms progressed from water-soaking continuous banding lesions on one side of stem to producing abundant Fusarium growth on the lesion at late stage of pathogenesis. Although wilting of plants was most frequently observed in sesame seedlings when infected with Fusarium oxysporum, reproduction of the partial stem discoloration and rot was possible by soil inoculation, and wound inoculation in old plants. The disease occurred from late July. Mycological characteristics of the isolate Fusarium oxysporum compared with those reported in sesame suggested that the isolate might be F. oxysporum f. sp. sesame.

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Studies on Infection Sources of Tobacco Mosaic Virus(TMV) in Tobacco Fields (연초 경작지의 담배 모자이크 바이러스(TMV) 전염원에 대한 연구)

  • 박은경;김종진
    • Journal of the Korean Society of Tobacco Science
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    • v.2 no.1
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    • pp.53-60
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    • 1980
  • Biological and serological assays were conducted with overwintered roots of tobacco and red pepper, capsule of tobacco, and several species of weeds in order to check whether those tissue could serve as a natural source of effection of tobacco mosaic virus (TMV) to field tobacco plants in the spring. Also in this study TMV occurrence was surveyed at several different stages of tobacco growth to see if a natural source discussed above has anything to do with actual appearance of TMV at fields. The results are as follows 1) The most critical period for TMV infection was the time when tobacco plants were handled with human hands; in the case of the modified polyethylene film mulching system it was at transplantation and when this modified system was changed to the regular system, and, in the case of the regular polyethylene film mulching system, the time was at transplanting and at primary sucker control by hands. 2) Roots of tobacco and red pepper were found to carry infective TMV even after overwintering in the soil. 3) Out of 38 weed species belonging to 22 families examined, only two species, Solanum nigrum and Physalis alkekengi var. franchetii were shown to be naturally infected with TMV. 4) TMV was isolated from capsule tissue, but not from immature anther of tobacco.

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A Comparative Consideration of Dementia in Oriental and Occidental Medicine (치매(痴呆)에 관(關)한 동서의학적(東西醫學的) 비교(比較) 고찰(考察))

  • Lee, Dong-Weon;Shin, Gil-Jo;Lee, Won-Chul
    • The Journal of Internal Korean Medicine
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    • v.16 no.1
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    • pp.1-16
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    • 1995
  • This study was done in order to investigate the etiology and pathology of dementia in the variety literature. Dementia in elderly persons(above the age of 60) mainly classfied Alzheimer disease and Cerebral vascular dementia. The results were as follows: 1. Dementia patients have abnormal mental function, who have no mental weakness but defects of memory, verbal disturbance, behavior disturbance and loss of intellectual function. 2. Dementia regard as 'me-beng(?病)', 'jeon-gwang(癲狂)', and 'heo-ro(虛勞)' in oriental medicine and the symptom is a silence with no response, mixing, a crying or a laugh, a stranger behavior and a amnesia; disturbances of speech, emotion, behavior. 3. Dementia caused by Alzheimer disease, Multi infarct dementia, Parkinson's disease, sequelae of acute CO poisoning, head injury and alcoholism(occidental medically) and the 'Dam(痰) and Damhwa(痰火), weakness of heart and spleen(心脾虛) caused by pent up anger of seven emotions(七情鬱結), the weakness of liver and kidney(肝腎不足)(oriental medically). 4. The causes of Alzheimer disease are various; a heredity factor, a morphological factor of brain tissues, a psychological factor and a biochemical factor (occidental medically) ; the 'Dam(痰) and Damhwa(痰火) caused by weakness of the internal organs and disturbance of the emotions(oriental medically). 5. Cerebral vascular dementia caused by loss of the certain cerebral neurons and oriental medically caused by obstruction of 'dam(痰)' or 'eo heul(瘀血)'. It is recommended that further study of many sided investigations, specially against a weakness of spiritual functions and a certain neurotoxin in the future.

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Detection of Poplar Mosaic Virus in Korea (한국에서의 포플러 모자이크 바이러스 검출(検出))

  • La, Yong Joon;Yi, Chang Keun;Yeo, Woon Hong;Hwang, Jae Woo;Shim, Sang Yung
    • Journal of Korean Society of Forest Science
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    • v.49 no.1
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    • pp.32-33
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    • 1980
  • Several plants of Populus deltoides 'R-89' exhibiting symptoms of poplar mosaic described earlier by several researchers (1,2,3) were observed in the poplar nursery of the Institute of Forest Genetics at Suweon, Korea during September, 1980. The symptoms produced a mosaic or discolored yellow spottings in mature leaves with veinal and petiolar necrosis and leaf curling (Fig. 1 and 2). Leaves with mosaic symptoms were collected and leaf-dip preparations from chlorotic area were examined for the presence of virus particles with an electron microscope. Electron micrographs of the negatively stained leaf-dip preparations revealed numerous elongated virus particles ranging 200-1300nm in length (Fig. 3). Of 156 panicles measured randomly, 68 particles (43.6%) were in the range of 660-670nm in length (Fig. 4). The values obtained fell well within the range of those described for poplar mosaic virus (PMV) by other researchers (1. 2, 3). No viruslike particles were observed from poplar leaves without mosaic symptoms. Further studies on the properties of the PMV isolate and control of the disease are underway.

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Study on the prerequisite Chinese characters for the education of traditional Korean medicine (한의학 교육을 위한 필수한자 추출 및 분석연구)

  • Hwang, Sang-Moon;Lee, Byung-Wook;Shin, Sang-Woo;Cho, Su-In;Yim, Yun-Kyoung;Chae, Han
    • Journal of Korean Medical classics
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    • v.24 no.5
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    • pp.147-158
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    • 2011
  • There has been a need for an operational curriculum for teaching Chinese characters used by traditional Korean medicine (TKM), but the it was not thoroughly reviewed so far. We analysed the frequency of unicode Chinese characters with five textbooks of traditional Korean medicine used as a national standard. We found that 氣, 經, 陽, 陰, 不, 熱, 血, 脈, 病, 證, 寒, 中, 心, 痛, 虛, 大, 生, 治, 本, 之 are the 20 most frequently used Chinese characters, and also showed 100 frequently used characters for each textbook. We used a cumulative frequency analysis method to suggest a list of 1,000 prerequisite Chinese characters for the TKM education (TKM 1000). which represents the current usage of Chinese characters in TKM and covers 99% of all textbook use if combined with MEST 1800. This study showed prerequisite and essential Chinese characters for the implementation of evidence-based teaching in TKM. The TKM 1000, a prerequisite characters by this study based on the TKM textbooks can be used for the development of Korean Medicine Education Eligibility Test (KEET), entrance exam to the Colleges of Oriental Medicine or textbooks, and educational curriculum for premed students.

Outbreaks of Akabane Diseasc of Cattle in Korea (한국(韓國)에서의 소의 Akabane병(病)의 발생(發生))

  • Bak, Ung-Bok;Lim, Chang Hyeong;Cheong, Chang Kook;Hwang, Woo Suk;Cho, Myung Rae
    • Korean Journal of Veterinary Research
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    • v.20 no.1
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    • pp.65-78
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    • 1980
  • From November 1978 to April 1979, there occurred among cows many cases of abortion, premature birth, stillbirth and congenital arthrogryposis or hydranencephaly in Kyongki-do province in Korea. Epizootics recurred between February and May, 1980 in the same area. Six calves born at 8 or 10 months of gestation were examined by means of pathology and one of the calves was examined by serological test. And a survey on local occurrence of the disease in other than Kyongki-do province, was conducted. 1. At necropsy, some calves showed distinct lesions such deformities of the limbs and the vertebrae as arthrogryposis or scoliosis. Other calves revealed arthrogryposis and partial or total deficience of the cerebral hemispheres with hydranencephaly. 2. In the calves with deformities the skeletal muscle showed histologically severe hypoplasia of the muscle fibers with cellular infiltration. In the central nervous system of the calves with hydranencephaly there were minute cystic cavitation and the decrease of ventral horn cells of the spinal cord in the number. 3. Similar epizootics were also observed in the same season in the other several provinces such as Chungoheongnam-do, Kangwon-do and Jeonrabuk-do. 4. Anti-Akabane virus antibody was detected in precolostral blood from the calf with arthroglposis and hydranencephaly syndrome. 5. On these findings of the disease it was diagnosed as Akabane disease presenting the first report on the epizootics in Korea.

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Study on the Prerequisite Chinese Characters for Education of Traditional Korean Medicine (한의학 입문을 위한 필수한자 추출 및 분석연구)

  • Chae, Han;Hwang, Sang-Moon;Kwon, Young-Kyu;Baik, Yu-Sang;Shin, Sang-Woo;Yang, Gi-Young;Lee, Byung-Ryul;Kim, Jae-Kyu;Lee, Byung-Wook
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.24 no.3
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    • pp.373-379
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    • 2010
  • There has been a need for establishing operational curriculum for chinese characters and chinese writing used by traditional korean medicine (TKM), but it was not carefully recognized so far. We analysed the frequency of unicode chinese characters from five medical textbooks and showed prerequisite chinese characters for TKM beginners. It was found that 之, 者, 不, 也, 而, 氣, 陽, 陰, 下, 其, 病, 爲, 人, 以, 中, 則, 於, 脈, 上, 故 are the most frequently used 20 chinese characters. We also showed that adequate prerequisite chinese character should be designated for the more efficient education of TKM. This study was the first systematic approach to get essential and prerequisite chinese characters for the education of TKM. The prerequisite characters by this study will be used for the development of KEET (Korean Medicine Education Eligibility Test), entrance exam to the Colleges of Oriental Medicine and textbooks, and educational curriculum of premed students.

Studies on Nosema Disease of Honey Bees 1. Isolation of Nosema apis and a Survey of Nosema Disease in Honey Bees (꿀벌의 Nosema 병(病)에 관한 연구(硏究) 1. 원인체분리(原因體分離) 및 감염실태조사(感染實態調査))

  • Suh, Myung Deuk;Kim, Chang Sup;Kang, Yung Bai;Kim, Dong Sung
    • Korean Journal of Veterinary Research
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    • v.15 no.2
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    • pp.279-285
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    • 1975
  • The experiments were conducted to isolate the etiogical agent and to survey the distribution of Nosema disease in honey bees. The results obtained were as follows: 1. The etiological agent of the so-called "crawling disease" in honey bees characterized by the symptoms of crawling, diarrhea, and enteritis etc. was first isolated and identified with Nosema apis (Zander 1909) in Korea. 2. 455 colonies were randomely sampled and surveyed in 4,766 bee colonies out of 56 apiaries and 51 colonies (11.2%) out of 455 bee colonies were infected with N, apis. 3. Infection rates according to the period of honeyflow as follows: Brassica napus (Apr.): 25/130 colonies (18.4%) Rohinia pseudoacacia (May) : 8/55 colonies (14.%) Trifolium repels(Jun.): 15/99 colonies (13.6%) Castanea crenate (Jul.): 3/46 colonies (6.5%) Lespedeza bicolor(Aug.): 0/60 colonies (-) Fagopyrumesculentum(Sept.) & Perilla frutescens(Oct.) 0/65 colonies (-) 4. The typical clinical signs of Nosema disease were appeared on loth day after N. apis was orally administered with the level of $16{\times}10^4$ spores/ml to the healthy adult bees. Spores could be harvested with the level of $121{\sim}236{\times}10^4$ spores/ml on 10th day and $392{\sim}429{\times}10^4$ spores/ml on 15 days after infection. 5. In adult honey bees infected with N. apis artificially the 50% lethal day of life-span was 9 to 10 days and 100% lethal day was 16 to 19 days. However, in the control 50% lethal day was 19 to 23 days and 100% lethal day was 31 to 33 days.

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Identification of Cylindrocarpon destructans Associated with Root Rot Disease of Strawberry (딸기 뿌리썩음병(病)에 관여하는 Cylindrocarpon destructans의 분리(分離) 동정(同定))

  • Sung, Jae-Mo;Song, Yoong-Nam;Yang, Sung-Suk
    • The Korean Journal of Mycology
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    • v.13 no.3
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    • pp.179-183
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    • 1985
  • Cylindrocarpon spp. were isolated from the soil where strawberry was grown in Suweon by soil plate method: colonies reaching 10 mm diam. in seven days at about $20^{\circ}C$; sporodochia with cream to beige to conidial slime commonly produced; conidiophore repeatedly branched and bearing subulate phialides; macroconidia cylindrical in the center part, straight or slightly curved and mostly $1{\sim}3\;septate,\;22{\sim}45\;{\times}\;5.0{\sim}6.0\;{\mu}m$; chlamydospore abundantly produced, intercalary or terminal on mycelium, singly or in chains and smooth or warted. The hypha and spore were easily fused each other on water agar. This fungus was pathogenic strawberry as a result of inoculation test. The symptom showed dwarf and yellowing at top and rotted roots under the ground. The fungus was identified as Cylindrocarpon destructans Scholten from the shape of conidiophores and conidia, mycelial growth and pathogenicity test.

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Phenol Lumbar Sympathetic Block for Buerger's Disease (Phenol에 의(依)한 요부교감신경절(腰部交感神經節) 차단(遮斷) -증예(症例) 보고(報告)-)

  • Moon, Hwa-Young;Jeong, Chang-Toung;Park, Chan-Jin
    • The Korean Journal of Pain
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    • v.1 no.1
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    • pp.120-124
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    • 1988
  • Phenol sympathetic block is valuable for the treatment of ischemic pain, gangrene, intermittent claudication, Paget's disease of the bone and pain associated with pancreatitis, pancreatic carcinoma, etc. The author has experienced a case of successful lumber sympathetic block using 7% phenol under fluoroscopy and given to a patient with Buerger's disease who had severe pain and ulceration of the right great toe for several years. After the sympathetic block, 2 epidural blocks with 2.5% bupivacaine were done in order to augment the effects of this sympathetic block. Subsidence of rest pain, increase in walking distance from under 100 M to over 500 M and circulatory improvement of the affected limb were observed, Improvement of circulation was confirmed by strain gauge plethysmography.

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