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HONG, Soon-Woo, & KIM, Chong-Chin: A study of virus disease on chinese date tree (I). On the external and the internal morphogical characteristics of disease inrected plants. Kor. Jour. Bot. 3 (1). 32-38. 1960 Since the peeuliar virus disease of chinese date tree (Zizyphus jujuba Mill. var. inermis Rehd.) has been noted in South Korea around 1950, 70% to 80% of the economically important trees have been either completely destroyed or infected with the virus, severe damage has been noted, particularly, across the area ranged from middle east to the middle part of Korea, including Seoul area. Yoon,-Koock-Byung in 1958 first reported the disease and described it might be caused by a kind of yellows. But he did not conform in his paper that the disease is pecisely caused by yellows virus. The authors, hereby intend to identify the true cause of the disease of the chinese date tree by studying the external symptoms of the disease and the internal morphological characteristics of the diseaset plant which shows various abnormalities in contrast to the healthy checks. In view of fact that the leaves of the infected plants become yellowish in color similar to the peach yellows, aster yellows, it is likely to be identifiable as the common yellows. Furthermore, the abnormal characteristics observed by the authors are as follow: The floral organs such as petals, sepald, stamens, and pistil turn into vegetative leaves, the leaves on heavily infected plant appear as small sized one and also showing as a common witch's broom like symptom. There are also an occuring of numerous advantitious shoots developed from both of stems and roots. The amount of photosynthetc starch grains increses iIn parenchymatous cells, necrosis takes place in mesophyll, Partlcularly, Palisade Parenchyma in the leaves of infected plants are distinguished in contrast to the healthy checks. From the symptoms and the present experiments described above, the authors are belived that the disease of chinese date tree is not caused by the yellows. It appears the disease is rather similar to the symptoms of sandal spike virus which was noted in India early in this centry. But the host plant of sandal disease, Santalum album L. and the insect vector, Jassus indicus Wal., have never been reported in Korean flora and the founa. The temperature and the other environmental factors is auite different Korea ard India. Thus the authors believe that the peculiar disease must be an endemic new virus origin in Korea and must be called as "shoot cluster disease of chinese date tree."
Presupposition in the Japanese linguistics can be classified into a process derived by the subordinate clause of syntactic structure and that by structure of lexical meaning. So, I can analyze this study as the developing process of the presupposition theory. Firstly, discussing the presupposition by syntactic structure, we can find that the same structures as relative clause, adverbal clause and cleft sentence belong to this kind. Also these presupposition sentences are in general derived from the subordinate clause of each syntactic structure. Secondly, discussing the presupposition by lexical meaning, the presupposition is derived by the semantic features of noun, adverb, auxiliary and verb. The most important factor is verb which is divided into factive and implicit verbs. Consequently, this study reveals that presupposition should be first analyzed by semantic level and then structure level, too. Tense and aspect also can be examined in the semantic level.
스칼라형 작용소의 스펙트럼으로 제한한 스펙트럼으로 제한한 스펙트럼 작용소의 특성화에 관하여 생각할 때, 그룹 ?^(its)에 필요조건을 첨가함으로써 유계선형작용소 S가 pseudo-hermitian 작용소가 된다. Reflexive Banach 공간상의 유계선형작용소 S가 pseudo-hermitian 작용소가 되기 위한 필요 충분한 조건은 f∈L1(R)가 ?∫Rf(t)?^(its)dt?? M?f?∞ 이다. We are concerned with the characterization problem for bounded spectral operators. We restrict the discussion to scalar type operators with real spectrum. The simplest criterion of this kind is for Helbert space. We give additional necessary conditions on the group ?^(its), which together with its uniform boundedness are both necessary and sufficient for S to be pseudo-hermitian operators. A bounded linear operator S on a reflexive. Banach space is pseudo-hermitian operators if and only if for every f in L1 (R), we have ?∫Rf(t)?^(its)dt?? M?f?∞ where the norm on the left is the operator norm, f is the Fourier transform of f and ???∞ is the sup norm.
Tumor markers already play an important part in the management of the urologic neoplasm. As the number of emerging markers increases, clinical judgement may be an even more important part of the use of tumor markers. Ideally, a tumor marker should be produced reliably only by a specific malignancy, be easily and reproducibly measured, be detectable when a tumor is in its early stages and correlate with a response to therapy. Unfortunately, an ideal tumor marker has not yet been identified. Tissue polypeptide antigen(TPA) is heterogeneous in nature and SDS-polyarcrylamide gel electrophorsis resolves it into components with molecular weights raging from 45,000 to less than 20,000. Thus TPA is capable of being filtered through the kidney and excreted in the urine. The increased levels of TPA in urine and serum are probably due to a more rapid turnover and autolysis of cells and may parallel a more aggressive tumor behavior. Carcinoembryonic antigen(CEA) is a glycoprotein first found in extracts of human colonic cancer and the colon of human fetus during the first trimester of pregnancy. Initially it was considered that plasma CEA elevations were found only in case of endodermally-derived carcinomas. As bladder is, in part, endodermally-derived, this led Hall et al. to look for raised plasma and urine CEA levels in patients with urothelial carcinoma. We measured the TPA and CEA levels of 24-hours urine from 20 healthy individuals and 96 patients with definitive transitional cell carcinoma of the urinary bladder. And we evaluated the corelationships with grades, stages and recurrence of transitional cell carcinoma of the urinary bladder. The results are as follows; 1. Positive values(mean+2S.D.) of TPA and CEA levels of 24-hours urine showed significant differences between normal individuals and patients with transitional cell carcinoma of the urinary bladder(p<0.001 and p<0.05, respectively). 2. TPA and CEA levels in 24-hours urine showed significant differences between normal individuals and patients with transitional cell carcinoma of the urinary bladder(p<0.001 and p<0.05, respectively). 3. TPA levels in 24-hours urine of patients with transitional cell carclinoma of the urinary bladder showed significant difference in each grades or each stages. 4. CEA levels in 24-hours urine of patients with transitional cell carnoma of the urinary bladder did not show significant difference in each grades or each stages. 5. The recurrence rate in stage A patients whose 24-hours urine TPA level were above the positive value was 77%. The recurrence rate in stage A patients whose 24-hours urine CEA level were above the positive value was 66.7%. So, TPA level of 24-hours urine in patients with transitional cell carcinoma of the urinary bladder can be a good tumor marker and show the more close corelationships with tumor grades or stages than CEA levels of 24-hours urine in patients with transitional cell carcinoma of the urinary bladder.
실험동물에 있어서 CCl₄에 의한 급성 간손상시 피부조직의 oxygen free radical 대사효소 활성 변동을 검토하기 위해 흰쥐에 CCl₄와 olive oil의 동량 혼합액을 체중 100g당 0.1ml씩 복강으로 투여하여 처치하였다. CCl₄투여로 인한 혈청 alanine aminotransferase 및 xanthine oxidase (XO) 활성은 현저히 증가되었으며 체중당 간무게(%) 및 간조직의 malondialdehyde 함량 역시 유의하게 증가되었다. 그리고 병리조직 검사에서도 CCl₄투여군에서 간조직의 괴사성 병변이 관찰되었다. 따라서 CCl₄를 투여한 실험동물이 급성 간손상 모델로 확인되었다. 이와 같은 간손상 실험동물의 피부조직 중 oxygen free radical의 생성효소인 XO 활성은 대조군과 별다른 차이를 볼 수 없었으나 oxgen free radical의 scavenging 효소인 superoxide dismutase, glutathione peroxidase 및 catalase 활성은 대조군에 비하여 유의하게 감소되었다. 또한 세포화학적 검사에서 cerrous perhydroxide 과립이 간손상 실험동물의 피부조직에서 많이 나타났다. 이상 실험결과는 CCl₄에 의한 급성 간손상 유도 실험동물의 피부조직에 H₂O₂의 축적이 나타나는 현상을 시사해주고 있다. To evaluate an effect of liver damage on the dermal oxygen free radical metabolizing enzyme activities, the CCl₄(0.1ml/100g body wt., 50% CCl₄in olive oil) was intraperitoneally given to the rats every other day for 2 weeks. Based on the histopathological findings, liver weight (%), serum alanine aminotransferase, xanthine oxidase activities and hepatic lipid peroxide contents, the animals were induced severe liver damage. In the present liver damaged animal, all the activities of dermal scavenging enzymes such as superoxide dismutase, catalase and glutathione peroxidase were significantly decreased compared with contral. And under the cytochemical electron microscopy the more coarse granules of cerrous perhydroxide were found compared with the control. In conclusion, the CCl₄-induced liver danage may influence upon the activities of some dermal oxygen free radical scavenging enzymes.
이 논문에서 우리는 Han-groups 의 몇 가지 흥미 있는 특성을 가지고 있는 groups의 더 일반적인 class에 관심을 가지고 있다. 우리는 몇몇의 이러한 특성을 얻고 더 일반적인 class의 특성이 Han-groups 임을 결정하고자 시도한다. 그리고 우리는 a compactly generated H-group은 Han-group임을 증명한다. 이 결과는 다음 (a locally compact H-group은 unimodular)을 포함하여 몇 가지 응용을 가진다. In this paper, we are interested in a more general class of groups which share some of the interesting properties of Han-groups. We obtain some of properties and attempt to determine which of the more general class are Han-groups. We prove that a compactly generated H-group is a Han-group. This result has applications, including the following ; A locally compact H-group is unimodular.
The purpose of seed coating is to make seedling mechanization possible by enlarging the seed size. The objective of this study was to determine the optimum of polymer and particulate matters for seed coating in perilla. There were significant differences of percent germination and germination speed in accordance with the coating polymer and the concentration. Among the coating polymer, germination of seeds using polyvinyl alcohol (PVA) was generally smooth, and followed by polyvinyl pyrrolidone (PVP), hydroxyethyl cellulose (HEC), and methyl cellulose (MC). The germination rate was also different according to the coating particulate matters. Generally, percentage germination and germination speed of seeds using the mixture of diatomaceous earth, talc and bentonite were higher and faster than using other coating materials, respectively. However, percentage germination using limestone was low, and percent germination of coated seeds with coating material showed the tendency of decreasing more than that of the seeds just added with coating particulate matters.
In order to examine the responses of heart rate and oxygen uptake during the first minutes of bicycle ergometer work with different loads, we measured the heart rate and oxygen uptake on 975, 100, 125, 150, 175, 200 and 225 watts. The results obtained were as follows: 1. Time required for reaching a steady state of heart rate and oxygen uptake was delayed with increasing work loads and it was more significant in case of oxygen uptake. 2. Statistically significant difference was existed in heart rate among different work loads of ergometer cycling except between 125 and 150 watts and between 200 and 225 watts. 3. Statistically significant difference was existed in oxygen uptake among different work loads, especially within 1 minute after onset of ergometer cycling. 4. The changes in the rates of increase of heart rate( HR%) and oxygen uptake( VO₂%) during the work, which were calculated as percentage to the values at 3 minutes after onset of ergometer cycling showed approximately the same pattern regardless of work loads, and the rate of increase was greater in heart rate than in oxygen uptake within 1 minute after onset of ergometer cycling.