모래다짐말뚝의 원심모델링

유남재,정길수,김상진,채승호 江原大學校 産業技術硏究所 2001 産業技術硏究 Vol.21 No.B

This paper is results of extensive centrifuge model experiments about design factors influencing the bearing capacity and the settlement behaviors of SCP (Sand Compaction Pile). Centrifuge model tests were carried out changing design factors for SCP method such as replacement area ratio (as= 20, 40, 70%), improvement ratio to footing width (W/B = 1, 2, 3), and amount of fines in sand pile (#200 = 5, 10, 15). Therefore, the effects of these design factors on the bearing capacity and the settlement behavior of SCP were investigated and changes of stress concentratio rato due to such an design factors were also investigated. Centrifuge model testing technique for preparing and installing centrifuge model of sand compaction pile, using freezing them, was also developed. As results of centrifuge model tests, more fines in sand compaction pile increases the bearing capacity of SCP. Optimum improvement ratio to footing width was found to be 2. Values of stress concentration ratio was in the ranges of 1.5 - 3.5. The depth of bulging in sand piles was found in the range of 2.0 - 2.5 times of pile diameter.

중학교 축구선수와 일반학생들의 체력 및 심폐기능에 관한 비교연구

유승희,이재문 경희대학교 체육과학연구소 1995 體育學論文集 Vol.23 No.-

The purpose of this study was to investigate differences of the physical fitness and the cardiovascular function between some trained Football players(TFP) and some untrained Students(US). The subjects are 20 persons, respectly. I adopted the physical lest and used tread-mill to understand the effect of aerobic exercise and to know the physical fitness and developing states of the sampled young students. The results of this study are as follows: 1.In terms of the height, weight, and chest, there were not any remarkable difference between TFP and US. 2.No significant difference appeared in terms of grip strength, Arm strength flexion, Arm strength extension, Leg strength flexion, Leg strength extension, Trunk flexion and Trunk extension between the 2 groups. In the back strength, however, there was a remarkable difference(p<0.05) between TFP(43.70±7.18kg) and US(35.5 ± 2.45kg) 3.In the percentage of the fat, there was a signficant difference(p<0.01) between TFP(15.13±2.28%)and US(21.13 ± 7.83%) 4.In TVe, I could not find any significant difference between them at rest in warm-up, all-out, 5-minute recovery. In the maximum tidal volume, It showed that three was significant difference(p<0.05) between TFP(2038.85 ±350.40㎖) and US(1792.10± 299.44㎖) 5.In Ve, there was no significant difference in the ventilations In the rest, warm-up, and 5-minute recovery. But in the maximun ventilation(Ve max), It showed that there was a remarkable difference(p<0.001) between TFP(123.58±22.38㎖/min) and US(97.18±21.55㎖/min). and there was a notable difference(p<0.01) between TFP(113.40± 23.29㎖/min) and US(89.09± 19.51㎖/min) in all-out. 6.In respiration rate(R.R), while there was no remarkable difference in warm-up and 5-minute recovery. It showed that there was a notable difference(p<0.05) between TFP(20.88±6.79n/min) and US(26.42±7.86n/min). It also showed that there was a remarkable difference(p<0.01) between TFP(62.70±6.52n/min) and US(69.88±9.44n/min). In all-out, It showed that there was a notable difference(p<0.001) between TFP(54.30±6.76n/min) and US(63.02 ± 7.36n/min). 7.In heart rate, ft showed that there was a significant difference(p<0.001) between TFP(68.18±15.63beats/min) and US(83.03± 8.84beats/min) at rest. In warm-up, It showed that there was a big difference(p<0.01) between TFP(87.13± 21.91beats/min) and US(109.57 ± 10.23beats/min). In maximum hearts rate, It showed that there was a big difference(p<0.001) between TFP(191.46±8.52beats/min) and US(200.27± 6.16beats/min) In average heart rate of all-out, It showed that there was a significant difference(p<0.01) between US(199.11 ± 18.10beats/min) and TFP(185.22± 6.07bea1s/min) In average heart rate of 5minute recovery, It showed that there was a big difference(p<0.001) between TFP(105.42± 11.69beats/min) and US(118.39±8.55beats/min) 8.In 02 pulse, while there was no big difference at rest and in warm-up, 5-minute recovery, a significant difference(p<0.001) was shown in the maximum O2 pulse between TFP(16.34 ± 3.09㎖/beats) and US(12.85±2.38㎖/beats). In all-out, It showed that there was a remarkable difference(p<0.05) between TFP(14.39± 3.84㎖/beats) and US(11.80± 2.32me/beats). 9.The oxygen intakes recorded between the two groups were not different in the warm-up and 5-minute recovery conditions, but at the other hand in the rest condition a notable difference(p<0.01) appeared between TFP(388.43±70.05㎖/min)and US(300.43±115.79㎖/min). In maximum oxygen intakes. It showed that there was a big difference(p<0.01) between TFP(3120.35±509.89㎖/min) and US(2510.47± 503.42㎖/min). In all-out, those also showed a very notable difference(p<0.001) between TFP(2984.30±427.95㎖/min) and VS(2288.63±443.44㎖/min). 10.In at rest, the oxygen intake per weight showed a big difference(p<0.05) between TFP(6.69± 1.79㎖/min) and US(5.41±2.14㎖/kg/min). And the maximum oxygen intake per weight also showed a notable difference(p<0.05) between TFP(57.01 ±5.77㎖/kg/min) and US(48.04 ± 14.23㎖/kg/min). In all-out, a significant difference(p<0.001) was shown between TFP(53.00±6.47㎖/kg/min) and VS(41.75±8.52㎖/kg/min). But In the warm-out and 5-minute recovery, I could not find any big difference between them. 11.There did no big difference between them at rest, and in warm-up, 5-minute recovery. But the maximum ventilation of carbon dioxide(VCO2) showed a very notable difference(p<0.01) between TFP(3966.60±659.22㎖/min) and US(3396.11±807.52㎖/min). In all-out, a big difference(p<0.05) was revealed between TFP(3666.04 ± 676.78㎖/min) and VS(3140.75 ±683.04㎖/min).

Low doses of ionizing radiation suppress doxorubicin-induced senescence-like phenotypes by activation of ERK1/2 and suppression of p38 kinase in MCF7 human breast cancer cells

신재식,우상혁,이형찬,홍승우,유두현,홍석일,이왕재,이명석,진영우,안성관,진동훈,박인철 Sookmyung Women's University Research Institute of 2010 여성과 건강 Vol.6 No.1

과재하중 재하에 따른 역 T형 옹벽의 활동거동에 관한 수치해석

유남재,이명욱,박병수,이승주 江原大學校 産業技術硏究所 2001 産業技術硏究 Vol.21 No.B

This paper is experimental and numerical research about the sliding behavior of cantilever retaining walls resisting surcharge loads. In experimental research, centrifuge model tests at the 1g and 40g-level were performed by changing the location of model footing and its width. Bearing capacity of model footing and characteristics of load-settlement and load-lateral displacement of retaining wall were investigated. Test results of bearing capacity were compared with modified jarquio method, based on the limit equilibrium method with elasticity theory. For the numerical analysis, the commericially available program of FLAC was used by implementing the hyperbolic constitutive relationships to compare with test result about load-settlement and load-displacement of retaining wall, bearing capacity of strip footing.

Low doses of ionizing radiation suppress doxorubicin-induced senescence-like phenotypes by activation of ERK1/2 and suppression of p38 kinase in MCF7 human breast cancer cells

신재식,우상혁,이형찬,홍승우,유두현,홍석일,이왕재,이명석,진영우,안성관,진동훈,박인철 Sookmyung Women's University Research Institute of 2010 여성과 건강 Vol.6 No.1

최근 8년간 K지방대학병원 응급실로 내원한 치과 응급환자에 관한 임상적 연구

유재하,김종배,김태우,문선재,권혁찬,김승범 大韓顎顔面成形再建外科學會 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.6

The delivery of the proper care to the emergency dental patients is more important in the aspdect of community dental service. To attain such a purpose requires the sacred duty to the training of oral and maxillofacial surgeons. This is a retrospective study on the characteristics of dental injuries and diseases in emergency patients. Ths study was based on a series of 2,649 patients treated as dental emergency patients at K country hospital of medical college, from Jan. 1, 1993, to Dec. 31, 2000. The obtained results were as follows. The trauma(71.6%) was the most frequent cause in dental emergency patients, odontogenic infection and oral hemorrhage were next in order of frequency. The primary interdental wiring and transpalatal wiring were frequent proper methods with rubber drainage for prevention of hemorrhage and infection in the primary care of jaw fracture. The peak incidence(45.0%) about the infection group was occurred in the pulpitis of advanced dental caries, and common treatments were the medication of antibiotics & anagesics and I&D. In the dentoalveolar hemorrhage group, a major cause was postoperative hemorrhage(57.9%) and hemostasis was obtained by pressure dressing, suture and drainage of infected wound. About TMJ disorder group, the peak incidence was showed in the post-traumatic myofascial pain dysfunction syndrome and its primary care was medications(anagesics & sedatives). In the other groups, various irritable specific pains were complained, such as trigeminal neuralgia-form pain, acute stomatitis, chemical burn, terminal stage neuritis of head & nech cancer and their primary care methods were various individually. For the rapid and correct care of the emergency dental disease above, well-trained education should be presented in the intern and resident curriculum of oral & maxillofacial surgery.

B.G.I 지반보강 공법에 관한 연구

유남재,서승오,김동건 江原大學校 産業技術硏究所 2009 産業技術硏究 Vol.29 No.B

This paper is to investigate effect of B.G.I (Best Grouting Innovation) method on reinforcing ground. In this thesis, extensive literature review was performed to summarize theoretical backgrounds of grouting and to compare the applicability of different grouting methods. Unconfined compression test with specimen prepared by injecting different grouts of B.G.I, S.G.R and L.W methods and by changing the curing time were carried out to figure out characteristics of initial unconfined compression strength mobilized in the early stage. As results of test, the compression strength increases with curing times and specimen prepared with grouts of B.G.I method show greater values than others. On the other hands, the measured values of pH are in the range of 7-10 during tests. In field, preliminary construction to main construction at several sites were performed to confirm the effect of reinforcing the ground by application of B.G.I method. From the results of permeability test in field, SPT test and phenol reaction test, it was found that N values after grouting are greater than those before grouting and values of permeability in grouted ground is reduced significantly.

구한말기 학교체육에 대한 역사적 고찰 : 「학교체조」에 대한 평가를 중심으로 On the focus of the evaluation of 「School Gymnastics」

金承在,柳根直 江原大學校附設 體育科學硏究所 1996 江原大學校附設體育科學硏究所論文集 Vol.- No.20

This study was to reexamine school gymnastics which appeared as a the department of gymnastics textbook in the end of choson dynasty, to reevaluate school gymnastics with the emphasis on background, and to recreate the position and character of school physical education in the end of choson dynasty. When we put together all accounts which examined and considered, we get to the conclusion as follows. We must not regard physical training which unfolded by a department and Japanese teacher of public school in the end of choson dynasty, after establishing the Residency General in 1906 in detail, such as advent of school gymnastics publication of 「manual for teaching school gymnastics」and a course in gymanstics, as growth and modernization of Korean school physical education. On the contrary, we have to regard it as one of a colonial physical policy of Japan. We have to find meaning of Korean school physical education in the end of choson dynasty in military gymnastics which unfolded lively as a main method of awakening of national consciousness and anti-Japanese struggle. Military gymnastics was performed by private school which gained the confidence as a school for Korean people and reached a number of 2,000 - 3,000. From such a historical understanding, we have to regard the end of choson dynasty as a 'Contradictive period of school physical education'. That is to say, we must prescribe as a contradictive period which was entangled 'physical training of invasion' of imperialism of Japan centering around a public school with 'physical training of resistance' centering around a private school.

안내염과 대장암이 동반된 재발성 간농양

전승정,김태헌,류민선,오다연,송명은,이신아,류재인,김혜인,문일환,유권 이화여자대학교 의과학연구소 2011 EMJ (Ewha medical journal) Vol.34 No.2

The causes of pyogenic liver abscess has been known as biliary tract disease or intrabadominal infection but the large proportions of the patients has no apparent underlying disorders. Recently colonic mucosal lesions were reported in patients with cryptogenic liver abscess and it has been suggested that colonic mucosal break may play a role in developing liver abscess in otherwise healthy patients. We experienced a patient of severe recurrent liver abscess complicated with endophthalmitis only 3 months after successful treatment of initial cryptogenic liver abscess and a polypoid colon cancer was discovered by chance. It seems prudent to proceed colonoscopic examination in patients with cryptogenic liver abscess especially when it is recurrent.

연구논문 : 항공기 배출량 산정 방법에 따른 공항주변 대기오염 영향분석연구

한승재 ( Seung Jae Han ),유정우 ( Jung Woo Yoo1 ),임윤진 ( Yoon Jin Lim ),이순환 ( Soon Hwan Lee3 ),이화운 ( Hwa Woon Lee ) 한국환경과학회 2014 한국환경과학회지 Vol.23 No.12

Emissions from aircraft have impacts on the air pollution of airport and the surrounding area. There are methods of emissions calculated as Tier 1, Tier2, Tier 3A and Tier 3B. Thus, this study investigated emissions from aircraft at the Gimhae International Airport using EDMS(Emissions & Dispersion Modeling System) program. Results of estimation from aviation emissions, Tier 3B considering all parts which can occur at the airport has the largest amount emissions. In order to understand the relation between aviation emissions and distribution of ozone concentration over airport area, numerical evaluation were carried out. Although the difference of surface ozone distribution between numerical assessment with and without aviation emissions was little, effects of air pollution at airport area from aviation emissions of NOx and VOCs.