• Title/Summary/Keyword: 하순

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A longitudintal study of soft-tissue profile changes In korean adults aged from 24 to 32 years (성인의 연조직 측모 변화)

  • Hwang, Sang-Hee;Sung, Jae-Hyun
    • The korean journal of orthodontics
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    • v.30 no.1 s.78
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    • pp.101-114
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    • 2000
  • The purpose of this study was to evaluate the soft-tissue profile changes from 24 to 32 yews of age in Korean adults. The subjects used in this study consisted of 17 males and 8 females. The data obtained from the lateral cephalograms taken at age 24 and 32, were analyzed statistically. The obtained results were as follows : 1. During the observation period, there were no significant changes in the hard-tissue measurements in both sexes (p>0.05). 2. In the anteroposterior measurements of soft-tissue, the males had significant increase in chin area (Pog', Gn'), and the females had significant decrease in lower lip (LI) (p<0.05). 3. In the vertical measurements of soft-tissue, both sexes showed the increased tendency in upper lip length (Sn-Sto) where the males showed significant increase (p<0.05). The lower facial height (Sn-Gn') turned out significant increase in both sexes (p<0.05). 4. In general, the females and males had the increased tendency in soft-tissue thickness, especially significant increase in chin area (Pog', Gn') (p<0.05).

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Damage of broad mite, Polyphagotarsonemus latus (Banks), on pepper growth and yield and its chemical control (차먼지응애(Polyphagotarsonemus latus)가 고추의 생육과 수확에 미치는 피해 및 화학적 방제)

  • 조명래;전흥영;라승영;김동순;임명순
    • Korean journal of applied entomology
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    • v.35 no.4
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    • pp.326-331
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    • 1996
  • To evaluate the damage of broad mite, Polyphagotarsonemus latus (Banks), on pepper growth and yield, broad mite females were infested on pepper seedlings. In plots infested with 1, 2, and 5 females/plant, pepper growth was significantly reduced after 10 weeks with growth rates of 264, 256, and 177%, respectively, while that of control plot was 337%. Total pepper yields in the plots infested with 1, 2, and 5 females/plant were 443.9, 230. 5, and 103.4 kg/lOa, respectively, which were significantly lower than 1, 197.5 kg/lOa of the control plot. Dicofol EC, Chinomethionat WP, Pyridaben WP, and Pyraclofos WP were effective in controlling the broad mite on pepper showing over 90% mortality by 17 days after application. Although the updated reports on the nationwide occurrence of the broad mite damage on pepper showed that most damages were occurring in greenhouses between October and March, damages were observed in late May in certain locality.

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The Possibility of Drought Expression by Late March Dryness in Rice Paddy Areas Using Terra MODIS NDVI (Terra MODIS NDVI를 활용한 3월말 논지역 건조상태에 따른 가뭄표현 가능성 연구)

  • LEE, Ji-Wan;LEE, Yong-Gwan;KIM, Seong-Joon
    • Journal of the Korean Association of Geographic Information Studies
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    • v.20 no.3
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    • pp.27-41
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    • 2017
  • The purpose of this study is to diagnose the possibility of future drought expression by late March dryness in rice paddy areas using Terra MODIS NDVI (Normalized Difference Vegetation Index). We tested the degree of dryness by comparing the 2000-2015 average NDVI with yearly NDVI, which we name DCI (Dry Condition Index). The 16-day interval DCIs from March 6 to May 25 were evaluated with spatio-temporal expression of South Korea. In particular, we find that the DCI for April 7 (March 23 to April 7) offered reasonable prediction of paddy dryness during drought years. The April 7 DCI value for dry conditions ranged from 0.04 to 0.08 while the DCI for normal conditions ranged from -0.04 to 0.01. The DCI can be one of the indicators used to evaluate the dryness of rice paddy areas at the beginning of the spring season.

The Change of Properties and Synthesis of Soluble Polyimides Based on 2,2-Bis(3-amino-4-hydroxyphenyl)hexafluoropropane (2,2-Bis(3-amino-4-hydroxyphenyl)hexafluoropropane을 이용한 용해성 폴리이미드의 합성과 특성변화)

  • Kim, Han-Sung;Ha, Soon-Hyo;Chun, Kyoung-Yong;Han, Hak-Soo;Joe, Yung-il
    • Applied Chemistry for Engineering
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    • v.10 no.7
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    • pp.979-984
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    • 1999
  • Aromatic soluble polyimides were synthesized from 2,2-bis(3-amino-4-hydroxyphenyl)hexafluoropropane and various dianhydrides such as pyromelltic dianhydride(PMDA), 3,3',4,4'-benzophenone tetracarboxylic dianhydride(BTDA), and 4,4'-(hexafluoroisopropylidene)-bis(phthalic anhydride)(6FDA). Polyimides prepared by thermal imidization were insoluble in common organic solvents (acetone, MNP, DMAc, DMSO, THF, and DMF) but those prepared by chemical imidization were soluble. The difference of solubility was explained by esterification between hydroxyl group and $CH_3COO^-$ from acetic anhydride used as a dehydration agent in chemical imidization. Glass transition temperatures of polyimides by thermal method were higher than those by chemical method. All of the polyimides are stable up to $300^{\circ}C$ regardless of the sample preparation. The x-ray diffraction patterns showed that all polyimides were amorphrous.

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수 종 목본식물의 화력학적 연구

  • 민병미;최재규
    • The Korean Journal of Ecology
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    • v.16 no.4
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    • pp.477-487
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    • 1993
  • To investigate phenological differences among species, and relationship between phenology and air temperatures, we surveyed foliation and flowering times of several woody plants in two temperate forests, Namhansansung and Taegwallyong area, for three years, 1991, 1992 and 1993. In Namhansansung area, the leaves of Quercus mor~golica, Rhododendron mucronulatum, Prunus levezlleana and Symplocos chinensis for. pilosa expanded in the early season(about 10 April), and those of Quercus variabilis, Quercus dentata and Maackia amurensis in the late season(about 5 May). The foliation time of the earliest species(Rhododendron mucronulatum) was 27 days earlier than thzt of the latest(Maackia amurensis, Quercus variabilis and Quercus dentata). In Taegwallyong area, the leaves of Staphylea bumalda and Rhamnus yoshinoi foliated on 25 April and those of Rhus verniciflua and Fraxinus rhynchophylla on 25 May. The annual mean air temperature of Narnhansansung area was $5.5^{\circ}C$ higher than that of Taegwallyong area. Foliation times of the same species were earlier in the former: the differences between two areas were 8~24 day among species. In contrast, flowering times of the same species were 0~22 days earlier in the former. It is concluded that the budding time of leaves was related to year day index(YDI), and foliation time of leaves was related to Nuttonson's index(Tn).

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ORAL SELF-MUTILATION IN THE LESCH-NYHAN SYNDROME : CASE REPORT (Lesch-Nyhan syndrome 환아의 oral self-mutilation에 대한 증례보고)

  • Jeon, Jin-Yong;Lee, Jae-Ho;Choi, Hyung-Jun;Choi, Byung-Jai
    • Journal of the korean academy of Pediatric Dentistry
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    • v.26 no.1
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    • pp.151-156
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    • 1999
  • Self-injurious behavior is defined as deliberate harm to one's own body without suicidal intent. It usually occurs as head banging or hitting, skin cutting, or finger biting and includes ocular, genital and oral self-mutilation. Lesch-Nyhan syndrome is a rare X-linked recessively inherited disorder, caused by complete absence of hypoxanthin-guanine phosphoribosyl transferase(HPRT) activity. Clinical presentation is characterized by mental retardation, chorea, athetosis, hyperuricemia, uricosuria and self-mutilating behavior. In these patients, the most typical feature is loss of tissue from biting themselves, even though they are not insensitive to pain. The dental management of self-mutilation includes treatment with appliances such as soft mouthguard or lip bumper, extraction of all the teeth, and orthognathic surgery. We report a 25-month-old boy who was a known case of Lesch-Nyhan syndrome and presented with severe self-mutilation wound on his lower lip. Vital pulpectomy and coronal resection was done as a more conservative approach than extracting all primary anterior teeth. Due to maintaining the root portion of the teeth in the bone, it is expected that the normal growth of the alveolar bone will be achieved.

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Efficient Exploration of On-chip Bus Architectures and Memory Allocation (온 칩 버스 구조와 메모리 할당에 대한 효율적인 설계 공간 탐색)

  • Kim Sungcham;Im Chaeseok;Ha Soonhoi
    • Journal of KIISE:Computer Systems and Theory
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    • v.32 no.2
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    • pp.55-67
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    • 2005
  • Separation between computation and communication in system design allows the system designer to explore the communication architecture independently of component selection and mapping. In this paper we present an iterative two-step exploration methodology for bus-based on-chip communication architecture and memory allocation, assuming that memory traces from the processing elements are given from the mapping stage. The proposed method uses a static performance estimation technique to reduce the large design space drastically and quickly, and applies a trace-driven simulation technique to the reduced set of design candidates for accurate Performance estimation. Since local memory traffics as well as shared memory traffics are involved in bus contention, memory allocation is considered as an important axis of the design space in our technique. The viability and efficiency of the proposed methodology arc validated by two real -life examples, 4-channel digital video recorder (DVR) and an equalizer for OFDM DVB-T receiver.

Flowering Response According to Different Seeding Dates and Day-length Treatment in Perilla (들깨 파종기와 일장처리에 의한 품종간 개화반응)

  • 정찬식;오기원;김현경;권일찬;배석복;박충범;곽용호
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.48 no.6
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    • pp.490-494
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    • 2003
  • To understand flowering response under diverse day-length condition and the movement of floral stimulus, we used six perilla accessions which showed diverse days to flowering. Though the growth phase was reported as irreversible between vegetative and reproductive stage, perilla showed reversible growth phase according to day length increase in May and June. When it sowed in March, flowering response was started in early May and vegetative and reproductive phase was coexisted in late June. When a part of a perilla plant was treated under short day condition, only apical buds on main stem or branches were flowered but other long day conditioned apical buds were not flowered. With this result it is suggested that the floral stimulus can not be transferred to other part of perilla.

Studies on Productivity and Nutrient Quality of Forage Rape (Brassica napus Subsp. oleifera) IV. Influence of sowing time on growth, yield and nutrient quality of forage rape. (사초용유채 ( Brassica napus Subsp. Oleifera ) 의 생산성과 사료가치에 관한 연구 IV. 파종기가 사초용 유채의 생육특성 , 수량 및 영양가치에 미치는 영향)

  • ;;Ichiro Goto
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.9 no.2
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    • pp.103-107
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    • 1989
  • To determine optimal sowing time of forage rape in southern areas of Korea, forage rape cv. Velox, the highest yielding variety among seventeen introduced varieties of forage rape, was grown under five different sowing times. The results obtained are summarized as follows: 1. Yield components such as plant length, number of branches and number of leaves etc. were highest at the sowing time of Sep. 14 and Sep. 24. 2. Plants sown at Sep. 14 and Sep. 24 also showed highest'fresh and dry matter yield. 3. As plants were grown under later sowing time, they showed higher values in content of crude protein and lower values in contents of crude fiber such as NDF, ADF, cellulose and lignin. 4. There was no relationship between variation of IVDMD and sowing time. Plants sown at Sep. 14 and Sep. 24 showed highest digestible dry matter yields.

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A PRESERVATIVE APPROACH TO PREVENTION OF SELF-MUTILATION IN PATIENT WITH LESCH-NYHAN SYNDROME ; A CASE REPORT (Lesch-Nyhan 증후군 환아의 자해 예방을 위한 보존적 접근 : 증례보고)

  • Kang, Dong-Gyun;Kim, Tae-Wan;Kim, Young-Jin
    • The Journal of Korea Assosiation for Disability and Oral Health
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    • v.2 no.2
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    • pp.147-152
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    • 2006
  • Lesch-Nyhan syndrome is rare X-linked genetic disorder involving absence of the enzyme hypoxanthine guanine phosphoribosyl transferase (HGPRT) related to purine metabolism. The deficiency of HGPRT activity leads to an excesscive uric acid production and consequent hyperuricemia. It occurs almost exclusively in males, and the incidence is estimate to be 1/100,000~380,000. Clinical presentation is characterized by developmental delay, mental retardation, choreoathetosis, spastic cerebral palsy, nephrolithiasis, obstructive nephropathy and acute gouty arthritis. A characteristic feature of Lesch-Nyhan syndrome is the appearance of intractable self-mutilation behavior. Self-mutilation behavior is complicated by secondary infection and tissue loss as well as pain. The dental management of self-mutilation includes presertive methods of using appliances such as lip bumper or soft mouthguard and radical methods such as extraction of all teeth or orthognathic surgery. A case of Lesch-Nyhan syndrome patient with self-mutilation and severe lower lip injury is presented. He was treated successfully with soft mouthguard.

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