밤나무 교잡종 과실의 질적 특성

이욱(Uk Lee),김만조(Mahn-Jo Kim),김선창(Sun-Chang Kim),이문호(Moon-Ho Lee),장용석(Yong-Seok Jang) 한국원예학회 2005 원예과학기술지 Vol.23 No.1

본 연구는 밤나무 교잡종 과실의 조합별 및 개체별 질적특성을 조사함으로써 신품종 육성의 기초 자료뿐만 아니라 품종검정 기준설정의 기초자료로 활용하는데 그 목적이 있다. 과실모양은 11 조합의 많은 개체에서 타원형(85.30%)을 나타냈으며 K×R 등 5조합에서 삼각형(3.78%), R×K 등 8조합에서 원형(5.46%), R×O 등 3조합에서 장타원형(5.46%)으로 각각 관찰되었다. 과피색은 모든 조합에서 암갈색과 적갈색이 각각 49.16%와 38.24%로 관찰되었으며 과피털은 K×R과 R×K만이 과피 전체에서 각각 1개체씩 관찰되었다. 과피털의 밀도는 대부분의 조합에서 92.86%가 중 이상이었으며 좌면의 크기는 E×O, E×R, K×O에서만 중 이상인 것으로 조사되었다. 과실의 광택은 K×O조합에서만 약인 개체가 출현하였으며 열과형태는 모든 조합에서 3가지 형태중 2가지 이상의 형태가 각각 혼재되어 있었다. 양적형질이 우수한 8개체 중 RO-22, RO-25 등 2개체만이 과실모양과 과피색이 각각 장타원형과 암갈색을 나타내었으며 OK-2 제외한 나머지 5개체는 각각 타원형과 적갈색으로 관찰되었다. 과피털의 위치는 OK-2 제외한 모든 개체는 과정부였으며 과피털의 밀도는 IO-15 제외한 모든 개체에서 밀하게 분포하였다. 좌면의 크기는 JO-7과 RO-25 개체가 가장 작았으며 광택은 K×O의 1개체를 제외한 모든 개체에서 중 이상으로 우수하였다. 열과형태는 JO-7과 JO-12, IO-15, OK-15 개체에서 각각 과정부 열과와 주두부 열과 등 각각 단일 형태를 나타낸 반면, OK-2 등 4개체는 과정부 열과와 측면부 열과가 혼재하고 있음을 알 수 있었다. 내피박피성을 조사한 결과, OK-2, OK- 4, OK-15 등 3개체는 내피박피율이 20% 내외로 불량한 반면 RO-25, JO-12 등 2개체의 내피박 피율이 각각 78.6%, 72.4%로 매우 우수한 것으로 나타났다. This study was aimed to applicate as the basic data for the presentation of International Union for the Protection of New Varieties of Plants (UPOV) guideline and for breeding new cultivars through qualitative characteristics of nut in chestnut hybrids. In nut shape, oval type, 85.30%, could be observed in all combinations, and triangle type, 3.78%, in K×R, K×O, E×R, I×R, J×O, and oblong type, 5.46%, in R×O, I×O, E×O, I×R, respectively. Both dark and reddish brown, 49.16% and 38.24%, in nut color were observed in all combinations, and nut pericarp hairs in only K×R, R×K could be observed in whole part. The density of its hair showed above middle rank (92.86%) in most of combinations, and the size of hilum area showed above middle rank in only E×O, K×O and E×R. Ten combinations except K×O showed a good condition in nut luster, and two or three types of three split type could be observed in all combinations, simultaneously. Superior individuals, RO-22 and RO-25, showed oblong and dark brown, but others except OK-2 showed oval and reddish brown in nut shape and nut color, respectively. In position of nut pericarp hair, only OK-2 showed stigma part, but all of superior individuals except IO-15 showed thickness in its density. Only JO-7 and RO-25 were smaller than others in size of hilum area, and JO-7, OK-4, OK-15, RO-22 and RO-25 had nuts with excellent luster. Most of individuals had nuts with two or three types in type of nut split, and JO-7, JO-12, IO-15 and OK-15 showed only single type. In peeling rate, OK-2, OK-4 and OK-15 showed around 20% while RO-25 and JO-12 showed 78.6% and 72.4% being considered as superior individuals for roasted chestnuts.

The clinical manifestations of stasis dermatitis and analysis of association with other vascular diseases

( Jeong Won Jo ),( Chang Il Kwon ),( Young Bin Shin ),( Yun Sun Moon ),( Eui Chang Jung ),( Chi Yeon Kim ),( Tae Jin Yoon ) 대한피부과학회 2019 대한피부과학회 학술발표대회집 Vol.71 No.2

Background: Stasis dermatitis is a common dermatologic disorder. It is caused by venous hypertension results from venous backward flow. However, research on the association with specific vascular disease is insufficient. Objectives: This study was intended to investigate in clinical manifestations of stasis dermatitis and analysis of association with other vascular diseases in our hospital outpatients. Methods: In this study, we investigated 37 patients with a diagnosis of stasis dermatitis in our hospital from 2014 to 2019. We reviewed clinical manifestations and relation with other vascular disease. Results: In total 37 cases, 20 (54.1%) patients were female and 17 (45.9%) patients were male. Twelve two (59.5%) patients were presented as erythema, followed by 14 (37.8%) as purpuric lesions and 11 (29.7%) as brownish changes. There were 4 (10.8%) patients showed crust, 3 (8.1%) as edema, 2 (5.4%) as scale, 2 (5.4%) as ulcer. For symptoms, 15 (40.5%) patients complained itching, 4 (10.8%) as tenderness, 3 (8.1%) as pain, 1 (2.7%). In relation with other vascular disease, 16 (43.2%) patients represented with vein related disease such as deep vein thrombosis, varicose vein and thrombophlebitis. However, there was no arterial disease such as arteriosclerosis obliterans. Conclusion: The result shows clinical manifestations of stasis dermatitis and association with other specific vascular diseases. By understanding these findings, it is expected that better treatment outcome will be obtained.

A survey of counseling and behavior regarding skin cancer

( Young Bin Shin ),( Chang Il Kwon ),( Jeong Won Jo ),( Yun Sun Moon ),( Eui Chang Jung ),( Chi Yeon Kim ),( Tae Jin Yoon ) 대한피부과학회 2019 대한피부과학회 학술발표대회집 Vol.71 No.2

Background: As the incidence of skin cancer increases, more information and education on skin cancer are needed. Although skin cancer is not rare, most patients are little known about general awareness of skin cancer. Objectives: The purpose of this study is to investigate the post-education effects on skin cancer in our hospital outpaitents and carers. Methods: We reviewed a written questionnaire and patients’ self-checked records including patients’ basic medical information and knowledge of skin cancer protective modalities. Results: In total 340 cases, 215 (63.2%) patients were female and 125 (36.8%) patients were male. 6 people in their teens, 56 people in their 20s and 30s, 156 people in their 40s and 50s, 122 people in their 60s or older. Before education, 142 people said sunlight can cause a skin cancer and 178 did not. After education, 246 people said Yes and 94 people did not. When asked how you wanted to get more information on skin cancer, 104 (30.6%) people said that they were printed handout, 142 (41.8%) were visit to dermatologists, 52 (15.3%) were photos of skin symptoms, and 42 (12.3%) were phone calls. Conclusion: This result showed that people are little known about risk factor of skin cancer such as sunlight and artificial tanning. However, we found that through education, people's perceptions could change. The education on behavior for skin cancer prevention should be continued so that the awareness of the risk of skin cancer can be changed.

5, 7-DHT가 흰쥐 등쪽솔기핵내 신경아교세포에 미치는 영향

채제명(Je Myung Chae),조승묵(Seung Mook Jo),남성안(Seong Ahn Nam),윤상선(Sang Seon Yoon),고병문(Byung Moon Ko),최창도(Chang Do Choi),최월봉(Wol Bong Choi) 대한해부학회 1998 Anatomy & Cell Biology Vol.31 No.1

신경독성물질인 5, 7-dihydroxytryptamine (5, 7-DHT)이 중추신경계통내 serotonin 신경세포에 미치는 영향과 이에 따른 신경아교세포들의 반응을 형태학적으로 규명하고자 본 연구를 시행하였다. 흰쥐의 가쪽뇌실에 5, 7-DHT(200μg)를 투여한 후면역세포화학적 염색을 시행한 후 광학 및 전자현미경하에서 등쪽솔기핵내 serotonin 신경세포에 초래되는 퇴행성변화와 주위 신경아교세포들의 반응양상 등을 경시적으로 (1, 3, 5, 10 및 20일) 관찰하였던 바 아래와 같은 결과를 얻었다. 흰쥐 등쪽솔기핵내 5, 7-DHT의 세포독성에 반응을 보인 신경아교세포로는 미세아교세포와 별아교세포였으며, 이들 세포 들의 반응양상은 매우 특징적이었으며, 상당한 차이를 보였으며, 전반적으로 미세아교세포가 별아교세포에 비해 빠른 변화소견을 보였다. 즉, 미세아교세포의 경우 실험 3일군 및 5일군에서 이미 그 수의 증가와 함께 활발한 포식작용을 보였던 반면, 별아교세포는 후기 실험군인 10일군 및 20일군에 이르러서야 세포질의 비대 및 수적 증식을 통하여 손상된 신경조직을 보상할 뿐 아니라 밀집된 미세아교세포들을 분산시키는 소견이 관찰되었다. 그러나 희소돌기아교세포는 본 연구의 전 실험군을 통하여 특별한 변화소견이 관찰되지 않았다. 이상의 결과로 부터 5, 7-DHT가 흰쥐 등쪽솔기핵내 신경세포에 강한 세포독성을 유발하며, 이에 따른 주위 신경아교세 포들 특히 미세아교세포와 별아교세포는 시간경과에 따라 매우 다양한 반응양상을 보인다는 사실을 알게 되었다 This study was designed to clarify the cytotoxic effects of 5, 7-dihydroxytryptamine (5, 7-DHT) on the serotonergic neurons in the dorsal raphe nucleus, and to investigate the glial reaction during the neurodegenerative changes by light and electron microscopy. Adult male rats (Sprague-Dawley strain) weighing from 250 g to 350 g each were used as experimental animal. 5, 7-DHT(200 μg dissolved in 0.9% NaCl) was injected into the lateral ventricle of the rat brain with the Hamiton syringe fixed on stereotaxic apparatus. The control rats were given with the similar volume of 0.9% NaCl. The rats were sacrified on the 1st, 3rd, 5th, 10th and 20th day after the injection of 5, 7-DHT. The results were as follows : Glial reactions induced by 5, 7-DHT were also observed in DRN. In early experimental stage, microglial reactions prevailed, whereas astroglial reactions were prevailing in later stage. In addition, microglial cells phagocytosed and removed the degenerated cells. However, astrocytes in DRN did not show phagocytotic activities such as microglial cells. Based on the results, author thought that 5, 7-DHT act as a specific neurotoxin to serotonergic neurons in DRN, and induces severe neurodegenerative changes. The glial reactions in DRN are activated during the neurodegerative changes, and show characteristic patterns of glial reactions.

우리나라 일별 강수발생의 확률과 주기성의 특성

문승의,김백조,하창환 한국환경과학회 1997 한국환경과학회지 Vol.6 No.2

The characteristics on the transtion probabilities and periodicity for the daily precipitation occurrence in Korean peninsula are investigated by applying the Markov chain properties to daily precipitation occurrence. In order to examine the responses of Markov Chain properties to the applied period and their magnitudes, three cases (Case A: 1956∼1985 at 14 stations, Case B: 1965∼1994 at 14 stations, and Case C: 1985∼1994 at 63 stations) are considered in this study. The transition probabilities from wet day to wet day for all cases are about 0.50 and in summer, especially July, are higher. In addition, considering them in each station we can find that they are the highest at Ullung-do and lowest at Inchon for all cases. The annual equilibrium probabilities of a wet day appear 0.31 in Case A, 0.30 Case B, and 0.29 Case C, respectively. This may explain that as the data-period used becomes shorter, the higher the equilibrium probability is. The seasonal distributions of equilibrium probabilities are appeared the lowest(0.23∼0.28) in winter and the highest(more than 0.39) in spring and monthly in July and in October, repectively. The annual mean wet duration for all cases is 2.04 days in Case A, 1.99 Case B, and 1.89 Case C, repectively. The weather cycle obtained from the annual mean wet and dry duration is 6.54∼6.59 days, which are closely associated with the movement of synoptic systems. And the statistical tests show that the transitions of daily precipitation occurrence for all cases may have two-state first Markov chain property, being the stationarity in time and heterogeneity in space.

일방향응고 초내열합금 CM186LC의 크리프 및 저주기피로 균열생성

趙昌龍,金豆炫,崔承柱,徐晟文,李在鉉 창원대학교 공작기계기술연구센터 1999 연구업적집 Vol.1 No.1

The second generation DS alloy CM186LC has comparable creep-rupture life to first generation single crystal alloys CMSX-2 and CMSX-3 in the as-cast and double aged condition. In the assembly of nozzle guide vanes, Ds components are joined into pairs by brazing. In order to study mechanical behavior of the material at the same condition as production, DS bars were subjected to brazing simulated treatments. Compared with standard treatment a small drop in creep-rupture life was observed but the degree of fall in life was not serious. Creep cracks initiated at the transverse components of the grain boundaries, which were normal to the applied stress direction. Every crack was associated with the v-v' eutectic phase at grain boundaries v-v' eutectic was not only located at grain boundaries but also in the interdendritic regions. It also acted as crack initiation site during creep. Low cycle fatigue tests were conducted under fully reversed trapezoidal strain wave at a frequency of 0.25Hz. The depth of the LCF cracks at the surface was comparable to that of the secondary dendrite arms from the surf-ace of the specimen. Cracks initiated at all of the interdendritic regions exposed at the surface, especially at the v-v' eutectic phase. LCF crack initiation and propagation are therefore proposed to be microstructally dependent.

때죽나무 種實油의 脂肪酸 分析

趙鍾洙,文昌國 경상대학교 환경보전연구소 1995 環境保全硏究所報 Vol.3 No.1

The chemical properties, compositions and components of fatty acid in the extracted lipid from Styrax japonica seeds were investigated as follows : 1. The proximate chemical compositions of S.japonica seeds were 21.1% in crude protein, 45.2% in fat, 12.3% in carbohydrate and 3.1% in ash. 2. The acid value, saponification value, iodine value and peroxide value of S.japonica seed oil were 2.97, 196.97, 128.52 and 68.47, respectively. 3. The total lipid was consisted of neutral lipid 89.74%, glycolipid 8.55% and phospholipid 1.71% 4. The fatty acid compositions of total lipid were 45.5% in linoleic acid, 41.6% in oleic acid, 9.1% in palmitic acid and 3.8% in linolenic acid. The total content of unsaturated fatty acids was 90.9% 5. The fatty acid compositions of neutral lipid were 41.61% in myristic acid, 28.44% in capric acid, 6.94% in lauric acid, 4.59% in icosanoic acid, 3.43% in oleic acid and 1.95% in palmitic acid. 6. The fatty acid compositions of glycolipids were 38.70% in lauric acid, 3.99% in capric acid, 14.09% in linoleic acid, 12.20% in palmitic acid, 8.36% in linolenic acid, and 20.35% in unknown part. 7. The fatty acid compositions of phospholipid were 11.31% in palmitic acid,

일란성 쌍생아에서 발생한 이차공형 심방중격결손증

정조원,홍창호,소동문,이철주 아주대학교 의과학연구소 1996 아주의학 Vol.1 No.1

Atrial septal defect is common congenital heart disease in children. Inheritance follows the multifactorial mode primarily but in certain families autosomal dominant transmission is evident. In Korea, there has been no case report of twins with ASD or any other congenital heart diseases in children, while there have been several reports of sildings and twins with ASD or other congenital heart diseases in other countries. Herewith we report a monozygotic pair of twins with atrial septal defects who were diagnosed by cardioc catheterizarion and confirmed by operation, with brief reriew of the literature.

초내열합금 CM247LC의 미세조직 및 인장 특성에 미치는 진동 및 접종처리의 영향

徐晟文,芮大喜,金仁守,趙昌龍 대한금속재료학회 2002 대한금속·재료학회지 Vol.40 No.12

Effects of vibration(V) and inoculation(I) during casting on the microstructure and tensile properties of nickel-base superalloy CM247LC were investigated. The vibration treatment with a frequency of 10 ㎐ was effective to refine the grain size and decrease the microporosity level to some extent. The vibration treatment for the inoculated mold developed the grains of the casting into fine equiaxed grains compared with columnar grains of the casting with vibration free inoculated mold. The existing phases of CM247LC alloy such as finely dispersed cuboidal γ', MC, and grain boundary precipitates were not influenced by the vibration and/or inoculation treatment. The fine equiaxed grained CM247LC had excellent tensile properties compared with those of the columnar grains. The tensile behavior of CM247LC alloy at 760℃ showed different aspects with respect to the grain size change and which was carefully analyzed by fractographic investigations.

크론병에 대한 CoPPLX의 방어효과에 대한 연구

이호학,김유림,문창기,이재일,양병윤,김종수,이정민,정재혁,안석진,박상준,김윤권,김소연,김영중,조민구,최영자,장성조 圓光大學校 醫科學硏究所 2005 圓光醫科學 Vol.20 No.1