http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Solid Phase Micro Extraction을 이용한 산초의 휘발성 성분 분석
이재곤,장희진,곽재진,김옥찬,이계호 한국식품영양학회 1999 韓國食品營養學會誌 Vol.12 No.2
Solid phase micro extraction(SPME)법의 최적조건 실험 및 SPME로 추출된 산초(Zanthoxylum schinifolium)의 휘발성 성분을 GC/MSD로 확인하였다. 휘발성 성분 추출에 자주 이용되는 동시증류추출(SDE)법으로 산초의 휘발성분을 분석하여 SP-ME 법에서 확인된 휘발성 성분과 조성비를 비교하였다. SPME 최적조건 시험에서 분자량이 적고 비점이 낮은 성분은 온도가 증가할수록 화이버에 흡착되는 양은 적게 나타났으며, 분자량이 크고 비점이 높은 성분은 추출시간이 증가할수록 흡착되는 양은 증가하였다. SPME 최적조건인 추출시간 30분과 50℃에서 분리된 휘발성 성분에서는 limonene(14.65%), geranyl acetate(11.07%), β-phellandrene(7.42%), 및 phellandral(3.08%) 등의 monoterpenoids 화합물과 caproic acid(11.99%), caprylic acid(8.01%), heptanoic acid(3.49%) 등의 지방산 화합물이 주요 성분으로 확인되었고, SDE법으로 추출된 휘발성 성분에서는 geranyl acetate(13.31%), limonene(12.81%) β-phellandrene(8.86%), trans-geraniol(5.22%) 및 caprylic acid(3.03%) 등의 화합물이 주요 성분으로 확인되었다. 지방산 성분들은 SPME법에서 높게 나타난 반면에 알코올 성분들은 SDE법보다 낮았다. SPME법은 적은 양의 시료로도 매우 신속하고 간단하게 전처리 할 수 있기 때문에 기존의 휘발성분 분석시 주로 사용한 SDE법에 비해 편리하며 경제적인 것으로 생각된다. Test of optimum condition of solid phase micro extraction(SPME) was performed by use of 5 volatile components in dilute aqueous solution. Volatile components of Sancho(Zanthoxylum schinifolium) were isolated by SPME method and were analyzed by GC/MSD, and compared with volatile components isolated by simultaneous distillation extraction(SDE) method. Total 31 components were identified by comparing gas chromatography retention time and mass spectral data. The major compounds were limonene, geranyl acetate, β-phellandrene, phellandral, myrcene, linalool, rose oxide, caproic acid and caprylic acid. SPME sampling procedure was found to be a good method for qualitative analysis of the volatile components.
Lee, Gae-Ho Korean Chemical Society 1993 Bulletin of the Korean Chemical Society Vol.14 No.2
The new high temperature plasma source for spectrochemical analysis has been developed and characterized. In the development of new high temperature plasma sources for atomic emission spectrocopy, optimization of experimental variables is necessary to achieve the best analytical results. By means of a modified sequential simplex optimization method, six experimental variables were optimized. The line-to-background (L/B) ratio for Ca(II) at 393.37 nm was used as measure of the response function. The optimal experimental conditions were found to be at a current of 27.8 A, a plasma length of 28.8 mm, a sample uptake rate of 1.3 ml/min, a sample carrier gas flow rate of 0.7 ml/min, a plasma gas flow rate of 4.9 l/min, and an observation height of 6.4 mm above the top quartz tube.
Lee, Gae-Ho,Yang, Suk-Ran,Park, Chang-Jun,Lee, Kwang-Woo Korean Chemical Society 1993 Bulletin of the Korean Chemical Society Vol.14 No.6
Gold bonding wire of 0.076 mm in diameter used in semiconductor industry, is dissoved in aqua regia. The solution is then evaporated to near dryness several times with a few drops of HCl added to prepare the final sample solution in 5% HCl. The gold matrix is separated from trace impurities by controlled potential deposition. The whole electrolysis has been carried out inside a clean bench. An optimum potential is found to be +0.25 V to give more than 99.9% Au matrix removal with better than 90 analytes remaining in the electrolyte solution. Isotope dilution calibration is employed to get the best accuracy and precision. Analytical results are presented with determination limits of the analytical method.
Hwang, Jun Ho,Lee, Ki Beom,Kim, Min Su,Lee, Seong Ro,Kim, Hasuck,Kim, Hyo Jin,Lee, Gae Ho 한국분석과학회 1995 분석과학 Vol.8 No.4
Three anode configurations of six-jet, cone-jet and cylindrical-jet are tested for their analytical performance under power mode operation. The effect of pressure, power and gas flow rate on atomic absorption signals have been studied. The increase of atomic absorption signal of sample element is observed at a fixed pressure in all configurations as the gas flow rate increase up to 300-600 seem, and as the power dissipated in the glow discharge cell increase. The lower the pressure is in the glow discharge cell at a fixed discharge power and argon flow rate, the greater the absorbance of sample element is. The optimum conditions are taken from these data and a calibration curve of Cu in low-alloy steel sample is obtained. In this calibration curve, six-jet configuration shows the best analytical results varies as the sample element.
호종수,이현개,이승재,박효일 인제대학교 1983 仁濟醫學 Vol.4 No.2
본 교실에서는 1981넌 6월부터 1982년 12월까지 경련 발작을 주소로 본 병원 신경외과에 입원한 환자 34명을 대상으로 임상적 고찰을 하였다. 조사 예에서는 전신 발작이 초점성 발작보다 2배 이상 빈도가 높았고 대발작은 남자에서, 초점성 발작은 여자에서 많이 나타났다. 약 65%에서 전구증상이 있었고, 성별의 차이는 거의 없었다. 34예 중 뇌전산하 단층촬영상 이상 소견을 보인 예는 19예로 55.9%였으며, 원인별로는 뇌낭미충증이 가장 많았다. 입원 당시 이학적 검사상 신경학적 이상소견을 보인 예와 초점성 발작을 보인 예 및 뇌파검사상 이상 소견을 보인 예에서 뇌전산화 단층촬영상 비정상 소견을 보인 예가 월등히 많았으며 뇌파검사상 정상 소견을 보인예에서도 상당수 뇌전산화 단층촬영상 이상 소견이 발견되었다. 뇌전산화 단층촬영 이외에도 경동맥 조영술, 뇌척수액 검사, 전해질 검사 등이 진단에 도움이 되었다. 전체 24예 중 임상적으로 대증성 경련으로 진단된 예는 24예(70.6%), 검사상 아무런 이상 소견을 발견할 수 없었던 소위 특발성 전간은 10예 (29.4%)였다. We have clinically evaluated 34 patients with seizure disorders, who were admitted to our neurosurgical department from June, 1981 to December, 1982. The cases with generalized seizure were over two times as frequent as those with focal seizure. The generalized seizure was more common in male than in female, but the focal seizrue was reversed. About 65% of the cases experienced the prodromal symptoms without sexual difference. 55.9% of the cases showed the abnormal finding in brain CT-scan, in which the most common cause was cerebral cysticercosis. The cases with abnormal findings in neurologic examination and EEG showed abnormal findings in train CT-scan more frequently than the cases with normal findings in the former studies. Other studies, such as carotid angiography, CSF study, and serum electrolyte value were also helpful to evaluate seizure disorders.
( Gae-eil Jang ),( Won Ho Jang ),( Yang Ki Kim ),( Jung Hwa Hwang ),( Somy Koo ),( Soo Taek Uh ),( Ki Up Kim ),( Bo Young Lee ) 대한결핵 및 호흡기학회 2019 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.127 No.-
Background: Pulmonary thromboembolism is the most preventable but fatal cause of death in hospitalized patients. The main cause of death in pulmonary thromboembolism is right-heart failure due to acute pressure overload. In this sense, extracorporeal membrane oxygenation (ECMO) might be useful in maintaining hemodynamic stability and improving organ perfusion. Some previous studies have reported ECMO as a bridge to definitive therapy of pulmonary thromboembolism. However, little is known about which patients will benefit from ECMO. Methods: Patients who underwent ECMO due to pulmonary thromboembolism at a single university-affiliated hospital between January 2010 and December 2018 were retrospectively reviewed. Results: During the study period, 9 patients were receiving ECMO in high-risk pulmonary thromboembolism. The median age of the patients was 54 years and 6 patients were male. All nine patients had cardiac arrests and ECMO was started as extracorporeal cardiopulmonary resuscitation (E-CPR). One patient received tPA and thrombectomy and one patient underwent thrombectomy as definitive therapy. The others received ECMO as a sole therapy. Two out of nine patients survived. Those survivors had in-hospital cardiac arrests and received ECMO only. Compared to non-survivors, survivors tended to have a short interval between CPR to ECMO initiation (30 minutes vs 60 minutes). Conclusions: Although cardiac arrest before ECMO is known to be a risk factor, early decision to start ECMO and its rapid initiation might help to save those with cardiac arrest in high-risk pulmonary thromboembolism.