40세 이하 관상동맥 질환자에서 장기적 임상 관찰

이승욱,정명호,박종철,박형욱,조상희,김원,김계훈,이상현,강경태,조장현,김남호,김건형,안영근,조정관,박종춘,강정채 全南大醫大 2001 전남의대학술지 Vol.37 No.2

성인병에 대한 한방치료법(증치의학과 사상의학)에 관한 연구 : 고혈압에 대한 한방치료법(중치의학과 사상의학)에 관한 연구

박동일,김영균,안창범,이인선,김종원,권정남,장경전,이인선,이성근,장용우,신영민 동의대학교 한의학연구소 1999 동의한의연구 Vol.3 No.-

We had a result of the treatment as below when is devided Korean medicine Tx.. Western medical Tx., Cooperative Tx.. 1) At the improvement of BP control, an average in Korean medicine Tx. (from 170㎜Hg/100㎜Hg to 150㎜Hg/90㎜Hg), an average in Western medical Tr. (from 170㎜Hg/100㎜Hg to 130㎜Hg/80㎜Hg), an average in Cooperative Tx.(from 180㎜Hg/110㎜Hg to 130㎜Hg/90㎜Hg), generally all pars had improvements of BP control. But it is not significant of each case. 2) At the improvement of symptoms by the apologetics, Cooperative Tx. is profitable in cases of 'GanHwa',' DamEum', 'EumYangYangHer', 'EumHer'. Korean medicine Tx. is superior in case of 'GiChe'. 3) At the improvement of symptoms by a questionnaire, Korean medical Tx., Western medical Tx., Cooperative Tx. groups had improvements, but each practice group didn't have specific significance. Only it was somewhat profitable to Korean medical Tx. in the 210㎜Hg/110㎜Hg, Western medical Tx. in the 180㎜Hg/110㎜Hg, Cooperative Tx, in the 170㎜Hg/90㎜ Hg. 4) There are the apparent improvements in patients whose BP are over 200㎜Hg of Korean medical Tx. group, whose BP are over 190㎜Hg of Western medical Tx. group and whose BP are over 170㎜Mg of Cooperative Tx. group. There are the improvement of diastolic BP in 110㎜Mg(Korean medical Tx., Western medical Tx.) and 90㎜Hg(Cooperative Tx.). 5) At the improvement of Pulse pressure, generally Pulse pressure are decreased. There are similar improvements in all of Korean medical Tx., Western medical Tx., and Cooperative Tx.. 6) At the Symptomatic approvement according to ages, Korean medical Tx., Cooperative Tx. are somewhat good for his twentieth, and Western medical Tx. is somewhat good for his forties. 7) the correlation of Obesity-grade and BP, as Obesity-grade is higher as BP is higher, but there are no similarity in the improvement. 8) At the EAV improvements, as examination into correlation with the point of 1~3th, we could get results as below. There are high improvements of DRHTM, DRALM, DLLYM, DLLIM in Cooperative Tx. There are high improvements of DRPASI, DLLARI in the Korean medical Tx. group. There are high improvements of DRFADM in Western medical Tx. group.

산업자재용 폴리에스터 섬유의 강도 향상에 관한 연구

박영신,남영식,정상영,최재호,장기혁,박원호,Park, Young-Shin,Nam, Young-Sik,Jung, Sang-Young,Choi, Jae-Ho,Jang, Ki-Hyuk,Park, Won-Ho 한국섬유공학회 2012 한국섬유공학회지 Vol.49 No.1

In this work, effects of total draw ratio change on the mechanical properties of polyester fibers were studied. The process parameter was a total draw ratio and the draw ratios that were used ranged from 6.6 to 7.0. Tensile properties are determined from the tensile tester, and crystallite parameters from the density measurement and X-ray diffraction were discussed with the different total draw ratios. The tenacity, young's modulus and crystallinity were increased to 10.6 g/d, 123.2 g/d and 42.1%, respectively, with increase in the total draw ratio. The relations between total draw ratio and mechanical properties of high tenacity polyester fiber were discussed.

萬壽山 一帶의 나비目 昆蟲相 : Chungnam, Buyeo

남상호,조영호,장석원,이선영 대전대학교 기초과학연구소 2001 自然科學 Vol.12 No.2

충청남도 부여군 萬壽山 일대의 나비目 곤충상을 1999년~2001년까지 21科 172種이 조사되었다. 조사된 분류군 중에서는 자나방科가 38種으로 가장 많이 채집되었다. 호랑나비科의 모시나비는 6.55%로 가장 높은 우점도를 나타냈으며, 월별 다양도지수는 5월에는 2.972, 6월에는 4.015, 7월에는 4.414, 8월에는 4.311로 총 다양도지수는 4.549로 나타났다. This study was carried out to investigate the lepidopterous insect fauna and occurrence from Mt. Mansu in Buyeo-gun, Chungnam. The results of collection and their investigation from 1999 to 2001 are as follows. Total 172 species belonging to 21 families were collected. Dominant species in the surveyed area were Pamassius stubbendorli in Papilionidae and Species diversity index was 2.972 in May, 4.015 in June, 4.414 in July, 4.31 1 in August. Total species diversity index was 4.549.

상추(Lactuca sativa L.)의 ACAT 억제 Diterpenoid, Phytol : 식용 식물자원으로부터 활성물질의 탐색 Development of Biologically Active Compound from Edible Plant Sources

장태오,방면호,송명종,홍윤희,김지영,정대균,배동근,권병목,김영국,이현선,김인호,백남인 한국농화학회 2003 Applied Biological Chemistry (Appl Biol Chem) Vol.46 No.1

소각재 용융슬래그를 이용한 제올라이트 Na-A의 합성

장영남,채수천,배인국,류경원 한국광물학회 2005 광물과 암석 (J.Miner.Soc.Korea) Vol.18 No.1

소각재 용융슬래그를 출발물질로 하여 알카리 조건하에서 활성화시킴으로써 Na-A형 제올라이트를 합성하였다. 합성실험은 스텐레스 철재로 제작된 반응용기를 사용하였다. 출발물질은 슬래그 외에 수정인공합성 공장에서 배출되는 '규산질 수용액'과 NaA1O₂수용액을 사용하였는데, 전자의 화학조성은 SiO₂5.7 wt% Na₂O 3.2 wt%이고, 후자는 몰비가 Na₂O/A1₂O₃= 1.2와 H₂O/Na₂O=9의 조건으로 알루미늄 드로스와 NaOH 수용액을 반응시켜 제조하였다. 위에서 언급된 슬래그, '규산질 수용액' 그리고 NaAlO₂ 수용액을 혼합시킨 혼성물을 약 80℃에서 7~8시간 반응시키면 Na-A형 제올라이트가 단일상으로 합성되었다. 출발물질의 이상적인 혼합비율은 Na₂O : Al₂O₃: SiO₂의 물비가 1.3~l.4 : 0.8~0.9 : 2이었으며 반응용액과 슬래그의 비율은 1 : 7~10 (g/㏄)이었다. 합성된 제올라이트의 형태는 균일한 입방형이었으며 입도는 약 1 ㎛이었다. 한편, Ca^(²+)이온에 대한 이온교환 용량(CEC)은 180~210 meq/100 g이었으므로 통용되는 세제용 제올라이트와 비교하면 약 80% 수준이었으므로 폐수처리나 오염된 중금속처리와 같은 환경처리용으로 사용될 수 있을 것이다. Na-A zeolite were synthesized from melting slag of the incinerated ash by the alkaline activation processes. The experiments were performed in stainless steel vessels, with continuous stirring during the reaction periods. The silica-rich solution, a starting material, which was the waste of crystal growth factory, contains 5.7 wt% SiO₂ and 3.2 wt% Na₂O And NaAlO₂was made by the reaction of aluminium dross and NaOH solution and its molar ratios were Na₂O/ Al₂O₃ = 1.2 and H₂O/Na₂O=9. During the residence time of 7~ 8 h at 80℃, the mixing of the silica-rich solution, NaAlO₂and melting slag yields the production of homogeneous Na-A zeolite. The optimal reactant composition in molar ratio of Na_₂O : Al₂O₃: SiO₂was 1.3~l.4 : 0.8~0.9 : 2 and mixing ratio of solution and slag was 1/7~10 (g/㏄). Synthesized Na-A zeolite has cubic form uniformly and its size ranges about 1㎛. Ca^(²+) ion exchange capacity of the Na-A was about 180~210 meq/100 g, corresponding approximately 80% to the commercial detergent builder.

LiF:Mg,Cu,Na,Si TL 소자의 선량계적 특성

남영미,김장렬,장시영 대한방사선 방어학회 2001 방사선방어학회지 Vol.26 No.1

최근 개발된 방사선량 측정용 LiF:Mg,Cu,Na,Si TL 소자의 글로우 곡선, 방출스펙트럼, 광자에 대한 선량의존성, 에너지의존성 및 페이딩 등과 같은 물리적 및 선량계적 특성들을 연구하였다. LiF:Mg,Cu,Na,Si TL 소자는 LiF:Mg,Cu,Na,Si TL 분말에 압력을 가한 후 소결하는 방법으로 제조되었다. 방사선에 대한 특성을 알아보기 위하여 광자선 조사는 한국원자력연구소의 X선 발생 장치 및 137Cs γ선 원격조사장치를 이용하였으며, 사용된 광자선 에너지 범위는 20-662keV, 선량 범위는 10-6-102 Gy이었다. 글로우 곡선은 수동형의 TLD 판독장치 (System 310, Teledyne)로 질소를 흘리면서 선형적인 가열률로 측정하였으며, TL 강도는 글로우 곡선을 전체 적분한 면적으로 평가하였다. 5℃·s-1의 선형적인 가열률로 측정한 글로우 곡선은 5개의 피그들로 분리되었으며, 234℃에 나타나는 주피크의 활성화에너지는 2.34 eV, 진동수인자는 1.00×1023이고, 방출스펙트럼은 410nm를 중심으로한 단일한 분포로 나타났다. 선량의존성은 100Gy 이상까지 선형성을 나타내었으며, 137Cs에 대한 저에너지 광자의 상대적인 에너지 반응값은 20% 범위 이내였다. 또한 실온에서 1년간 보관하였을 때, 시간경과에 따른 TL 감도의 감소가 거의 없는 좋은 페이딩 특성을 보였다. Sintered LiF:Mg,Cu,Na,Si thermoluminescence (TL) pellets were developed for application in radiation dosimetry. In the present study, the TL dosimetric properties of LiF:Mg,Cu,Na,Si TL pellets have been investigated for emission spectrum, dose response, energy response, and fading characteristics. LiF:Mg,Cu,Na,Si TL pellets were made by using a sintering process, that is, pressing and heat treatment from TL powders. Photon irradiations for the experiments were carried out using X-ray beams and a 137Cs gamma source at the Korea Atomic Energy Research Institute(KAERI). The average energies and the dose were in the range of 20-662 keV and 10-6- 102 Gy, respectively. The glow curves were measured with a manual type TLD reader(System 310, Teledyne) at a constant nitrogen flux and a linear heating rate. For a constant heating rate of 5℃·s-1, the main dosimetric peak of glow curve appeared at 234℃, the activation energy was 2.34eV and frequency factor was 1.00×1023. TL emission spectrum is appeared at the blue region centered at 410 nm. A linearity of photon dose response was maintained up to 100 Gy. The photon energy responses relative to 137Cs response were within ±20% at overall photon energy region. The fading of TL sensitivity of the pellets stored at the room temperature was not found for one year.

색상 측정 기기를 이용한 복합레진 적층 수복과 단일 수복의 색상 비교 분석

송영상,김자현,이빈나,장지현,장훈상,황윤찬,오원만,황인남 大韓齒科保存學會 2012 Restorative Dentistry & Endodontics Vol.37 No.2

Objectives: This study analyzed the difference in color caused by different thickness in enamel layer of composite resins when applied with single and layering placement technique, and evaluated if the results agreed with the shade guide from the manufacturers to verify reliability of the color matching process of the manufacturers. Materials and Methods: For single composite resin samples, 6 mm diameter and 4 mm thickness cylindrical samples were fabricated using Ceram-X mono (DENTSPLY DeTrey) and CIE L*a*b* values were measured with spectrophotometer. Same process was done for layering compositie resin samples, making 3 dentinal shade samples, 4 mm thickness, for each shade using Ceram-X duo (DENTSPLY DeTrey) and enamel shade resins were layered in 2 mm thickness and CIE L*a*b* values were measured. These samples were ground to 0.2 mm thickness each time, and CIE L*a*b* values were measured to 1 mm thickness of enamel shade resin. Results: Color difference (△E*) between single and layering composite resin was 1.37 minimum and 10.53 maximum when layering thicknesses were between 1 mm and 2 mm and 6 out of 10 same shade groups suggested by manufacturer showed remarkable color difference at anythickness (△E* > 3.3). Conclusion: When using Ceram-X mono and duo for composite resin restoration, following the manufacturer's instructions for chossing the shade is not appropriate, and more accurate information for Ceram-X duo is needed on the variation and expression of the shades depending on the thickness of the enamel. (Restor Dent Endod 2012;37(2):84-89)

연소에 의한 엔진 진동 특성에 관한 연구

장석영,박경석,오택열,백영남 慶熙大學校 1993 論文集 Vol.22 No.-

Generally, a knock sensor for a high power engine detects cylinder wall vibration and estimates pressure vibration in the combustion chamber. In this study, so combustion pressure detected by pressure tranducer and cylinder wall vibration detected by an accelation sensor are estimated and the difference of those two signals are anlayzed. These two signals are analysed by frequency analysis method and compared with theorical knocking mode in the combustion chamber of the spark ignition engine. Design parameters of the knock sensor are determined by these analysed data.

切土法面 綠化工法에 關한 硏究 : 産業廢棄物을 活用한 綠化物質의 造成 事例를 中心으로 Application of Vegetative Soil Out of Utilized Industrial Sludge

장용배,오휘영,김남춘 漢陽大學校 環境科學硏究所 1996 環境科學論文集 Vol.17 No.-

본 연구는 切土斜面 綠化工法에 있어서 産業廢棄物을 활용한 綠化物質의 조성을 통하여 植物生育 및 斜面 浸蝕 安定效果를 기여하는 綠化物質의 構成比를 파악하기 위하여 1994년 4월부터 1994년 9월까지 실시하였으며, 綠化物質 별로 7개 斜面實驗區와 外來導入草種 2종과 在來鄕土草種 5종의 生育實驗區에서 조사하여 얻은 결과는 다음과 같이 요약될 수 있다. 1. 식물의 被覆率과 生育狀態가 가장 우수한 綠化物質의 구성비는 混合型區(Soil A)이며, 가장 저급한 구성비는 제지재 위주의 配合型區(Soil D)로 나타났고, 土壤硬度 및 균열현상등 斜面浸蝕效果에 가장 좋은 綠化物質 구성비는 제지재 위주의 配合型區(Soil D)와 연탄재 위주의 配合型區로 나타나, 이의 결과는 處理區간에 서로 반대의 경향을 보였다. 2. 綠化物質은 알카리성토양으로 판명되었으며, 유기물함량, 전질소, 유효인산, 치환성염기는 우수한 것으로 나타났다. 3. 외래도입수종인 Tall Fescue Arid와 Perennial Ryegrass, 참싸리, 쑥, 비수리의 근계발달은 비교적 양호한 것으로 나타났다. 따라서 植生綠化工法에 있어서 綠化物質의 적정한 구성비는 法面의 토질상태, 경사도, 향 공사시기등을 고려하여 早期綠化의 필요성이 강조되는 경우에는 有機性 産業廢棄物의 함유율을 30%에서 50%까지 가능할 것으로 생각되며, 法面의 요철이 심하고 균열이 심한 斜面과 時期的으로 파종시기가 아닐때에는 斜面 침식을 고려하여 토양재류의 함유율을 25%에서 60%까지 조절하여 적용하는 것이 바람직할 것이다. The purpose of this study is to review the ratios of vegetative soilmix in terms of their effects on the growth of vegetation and stability of erosive cutting slope land by adjusting the ratios using the industrial sludge through the turfen method. For this purpose, a test work was conducted and in this test work various ratios of vegetative soil mix were applied to seven plot by transplanting 2 species of alien grasses and 5 species of native ones. The results of the test can be summarized as follows: 1. The most efficient mixing ratio of vegetative soil for turfing and plant growth is the mixed soil A, while the least efficient one is soil D of primary paper sludge. However, in terms of soil hardness, crack and corrosion-resistance, the best mixing were the soil D and soil G of primary used briquets, ironically. 2. It was disclosed that the vegetative soils are of alkali, and thus they are rich in organitive subtances, total nitrogen, effective phosphoric acid and substituent bases. 3. The growth of roots are relatively good in case of the alien Tall fescue“Arid”and Perennial rye grass as well as the native Lespedeza bicolor Turcz, Artemsia princeps Pampan and Lespedeza cuneata G. Don. All in all, in the turfen method the vegetative soil should be adequately mixed in consideration of slope land quality, bevel, direction and construction time. In case earlier turfing is required, the organic industrial wastes may be contained by 30%∼50%, while this ratio can be adjusted with the wide range of soil material portion (25∼60%) in consideration of slope corrosion when the slope has much ruggedness and sowing is not feasible.