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배귀남,김민철,이승복,송기범,진현철,문길주 한국대기환경학회 2003 한국대기환경학회지 Vol.19 No.4
A multi-functional indoor smog chamber was designed and evaluated lo investigate photochenical or water vapor reaction mechanisms of air pollutants. Various smog chamber experiments could be conducted using ambient air or purified air in this smog chamber. The smog chamber consisted of a housing, a Teflon bag, blacklights, injection ports, sampling ports, and utility facilities. The characteristics of light source, the wall losses of air pollutants, and the quality of purified air were experimentally investigated. The maximum NO₂ photolysis rate was 1.10min^(-1). In a 2.5-m³ Teflon bag, the wall losses of ambient O₃, NO, and NO₂were 1.2~2.4×10^(-3)min^(-1), 0.7~2.0×10^(-3)min^(-1), and 0.4-2.0×10^(-3)min^(-1), respectively. The wall loss of ambient particles ranging 0.05 to 0.2㎛ was 1.8~5.4×10^(-3)min^(-1), which was slightly higher than those of ambient gaseous species. The purified air supply system provided high quality of air with NO₂, < 1 ppb, and total hydrocarbons <5 ppb.
Hong, Sun-Min,Bae, Dong-Won,Kim, Mee-Hyang,Shim, Chang-Ki,Kang, Kyu-Young,Kim, Nam-Soo,Kim, Hee-Kyu Plant Molecular Biology & Biotechnology Research C 1994 Plant molecular biology and biotechnology research Vol.1994 No.
Primer 155(GCTGGCGCTG) was the most useful primer with distinctive polymorphic DNA pattern to distinguish between KI races and KJ races. Primer 173(CAGGCGGCGT) showed polymorphic DNA pattern to distinguish isolates of KI-100 race. The specific DNA fragment of 0.6Kb, generated from 88-62 of KJ-201 race by RAPD with primer 412)TGCGCCGCTG), was promising as a molecular marker to identify the isolate.
Kim, Jong Seok,Park, Yeong Min,Bae, Mun Ki,Kim, Chi Whan,Kim, Dae Weon,Shin, Dong Chul,Kim, Tae Gyu World Scientific Publishing Company 2018 Modern physics letters. B, Condensed matter physic Vol.32 No.20
<P>In this study, diamond thin films were deposited on tungsten carbide tools using surface-wave plasma-enhanced chemical vapor deposition (SWP-CVD). To eliminate the adverse effects of cobalt on the diamond deposition process, the cobalt was removed from the surface of the tools by etching with Murakami’s reagent for various times (30, 60, and 120 min). The cutting performance of the untreated and the diamond-coated WC tools was examined by performing cutting test on carbon fiber-reinforced plastic (CFRP). The results showed that all the diamond-coated tools exhibited great improvement on the durability and wear resistance compared to the uncoated one. In addition, the diamond-coated tool lift time is found to be proportional to the etching time. An increase more than twofold has been achieved when the etch time was increased from 30 min to 120 min.</P>
( Tae Wook Kim ),( Jong Hyuck Kim ),( Nam Eun Bae ),( Hyung Seok Seo ),( Young Soo Baik ),( Jeong Beom Lee ),( Hun Mo Yang ),( Young Ki Min ) 한국운동영양학회 2012 Journal of exercise nutrition & biochemistry Vol.16 No.4
This study investigated whether the recruitment of activated sweat gland density during passive heating [immersion of the lower body into hot water, 41℃ for 30 min (PH), room temperature 23 ± 0.5℃ with 60 ± 3% relative humidity] is different in endurance-trained (Trainee), compared with that of untrained subjects (Control), as indicated by VO2max. Eight trainees and seven control female subjects (38.31 ± 4.91 ml·kg-1·min-1 and 31.8 ± 0.92 ml·kg-1·min-1, respectively, p < 0.01) were similar on all other physical characteristics. To compare the changes between the trainees and controls, serum cortisol and prolactin (PRL), tympanic temperature (TYMP), local activated sweat gland density (L-ASGD) and the mean whole body sweat loss volume (M-WBSLV) changes were measured after PH. The cortisol was significantly higher (p < 0.05) and the PRL tended to be higher in the Trainee than in the Control. The TYMP increased more in the Trainee than in the Control (p < 0.001). The L-ASGD showed a higher tendency in the Trainee than in the Control, there was a significant difference in the mean activated sweat gland density (p < 0.01) and the L-ASGD was significantly correlated with the VO2max (p < 0.001). The M-WBSLV was significantly higher in the Trainee (p < 0.001) and significantly correlated with the VO2max (p < 0.001). The results suggest that in humans, a high aerobic capacity is associated with a greater recruitment of activated sweat glands, whole body loss of volume and TYMP. Therefore, the decline in the heat loss responses, due to decrease in maximal oxygen consumption, may be masked by repeated endurance exercise training.
배기환,민병선,도동선,김남수,양기종,안병준 충남대학교 약학대학 의약품개발연구소 1992 藥學論文集 Vol.8 No.-
For the research of cytotoxic natural products, 50 medicinal plants were extracted with benzene and methanol, separately, and screened against L1210 cells. From the results(Table I), 6 samples showed cytotoxicity both in benzene and methanol extracts of 17 samples in benzene extracts and 3 samples in methanol extracts, respectively. Generally, the cytotoxicity exhibited high frequency (34%) in benzene extract but low frequency in methanol extract(6%), it meant that active cytotoxic components had less polarity. ED_50 values less than 10 ㎍/㎖ were observed in 17 medicinal plants.
침습성 아스페르길루스증으로 치료받았던 급성 백혈병 환자에서 조혈모세포이식후 발생한 파급성 아스페르길루스증 1례
배기선,박지영,신수연,문영철,최희정,조민선,성주명 대한감염학회 2003 감염과 화학요법 Vol.35 No.4
본 증례는 침습성 아스페르길루스증의 과거력을 갖고 있는 백혈병환자에서 조혈모세포이식을 받은 후 치명적인 파급성 아스페르길루스증이 발병한 예이다. 환자는 항암요법 후 흉부 방사선 및 단층촬영에서 진균성 폐렴을 의심하여 항진균제를 투여하고 폐엽절제술을 시행하여 아스페르길루스에 의한 폐렴임을 확인하였다. Amphotericin B로 치료한 후 조혈모세포이식을 시행받은 뒤 치료에도 불구하고 파급성 아스페르길루스증으로 진행되어 사망하였다. 이 증례에서 보듯이 이전에 아스페르길루스증의 과거력이 있는 경우에 이식후 치명적인 결과를 유발할 수 있으므로, 고위험군을 선별하는 지침과 적절한 치료법에 대한 연구가 필요하겠다. Invasive aspergillosis has been increasing as the number of severe immunocompromised hosts rises. Particularly, in allogeneic hematopoietic stem cell transplantation (HSCT) recipients, incidence of invasive aspergillosis ranges from 4 to 10%. Even with appropriate treatment, the prognosis of invasive aspergillosis in allogeneic HSCT recipients remains poor, showing high mortality rate. Herein. we report a case where invasive aspergillosis in a patient with acute myelogeneous leukemia progressed to disseminated aspergillosis after allogeneic HSCT. A 31-year-old woman with acute myelogenous leukemia had invasive aspergillosis after third reinduction chemotherapy. After administering amphotericin B, the patient underwent the wedge resection of lung. and HLA-matched allogeneic HSCT was then conducted. On day 14 of transplantation, the patient died of disseminated aspergillosis, including possible cerebritis and endocarditis despite the amphotericin B therapy.
민창기,배성제,이기청 한국운동역학회 2001 한국운동역학회지 Vol.11 No.1
The purpose of this study is to analyse the kinematical variables for the successful head attack factors in Kumdo bouts. The bouts included 34 games of 27 preliminary matches for President Cup held in November 2000 were filmed by two video cameras. The DLT technique of 3-dimensional image analysis for calculation of players and their bamboo sword in coordinates value and then the pace, speed, angle between bamboo sword and ground, angular velocity of bamboo sword's first part, attack distance, and stroke time that give impact on the outcome of the match when attacking head were analyzed. Among the kinematical variables that showed the significance in statistics were the pace, attack distance, and the stroke time. This finding implies that although their direct impacts were not significant the other factors could have indirect impact on attacking head. Thus, the attacker should practice for successful performance.
오차드그래스(Dactylis glomerata L.)의 품종에 따른 종자유래의 캘러스 형성률과, 캘러스 크기 및 식물체 재분화 효율의 비교
배은경,이인애,김기용,이병현,손대영,이효신,정민섭,조진기 Plant molecular biology and biotechnology research 2002 Plant molecular biology and biotechnology research Vol.2002 No.-
Comparison results of callus formation ratio from seed explants, callus sizes, regeneration ratios from callus and regeneration efficiency [calculated by following formular; callus formation ratio(%) × regeneration ratio(%)/100]for 27 ochardgrass (Dactylis glomerata L.)varieties imported and Hapsung 2 developed in Korea are as follows; 1. Among ochardgrass varieties showing more than 50% callus formation ratios, the descending order of callus formation ratio after bedding the seed explants for 4 weeks was 93>Sparta>Pizza>Condor>Lidaglo>Glorus>Hapsung2>Frode. 2. The callus sizes after bedding for 4 weeks were in the range of φ 0.43cm~4.2cm in which there was 10 times size difference between the largest one and the smallest one but most of them were between φ2.5cm~4cm. 3. The regeneration ratio from callus among varieties were in the range of 0~36% and descending order of the upper 6 varieties was Plano>Akimidori>Justus>Lidacta>Currie>Hall mark. 4. The regeneration efficiency which is calculated by the ratios of regeneration from seed explant numbers was between 0 to 17.4% among which Justus showed the highest value in the 4-week treatment. 5. The correlation between callus formation ratios and the callus sizes, callus formation ratios and regeneration efficiency, and callus sizes and regeneration efficiency were r=0.5765, r=0.6365 and r=0.6246, respectively in 4-week callus and all the correlations were significant on the 1% level. 6. In 6-week callus, the descending order callus formation ratios from seed sxplants for the best 6 varieties was Condor>Sparta>93M>Justus>Potomac>Lidaglo>Frode. 7. The callus sizes formed were between φ1.5~5.7cm in which Sparta, the largest one of φ5.7cm was five times larger than the smallest one. The callus size of the control variety. Hapsung 2 was φ3.8cm, which belonged to larger size. 8. Regeneration ratio showed a great deviation among varieties from 6-week old calli by showing from 0% to 100% in which all the calli were regenerated in Plano while no callus was regenerated in Juno, 9. The range of regeneration effciency was between 0~28% among varieties in which the values from 6-week callus treatment were larger than those from 4-week callus treatment. Especially, the value of Potomac in 6-week was 3 times larger than that in 4-week. 10. The correlation between callus formation ratios and the callus sizes, callus formation ratios and regeneration efficiency, and callus sizes and regeneration effciency were r=0.8369, r=0.6683 and r=0.5937, respectively in 6-week callus, and all the correlations were significant on the 1% level.