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다종의 Pulse Oximeter에서 측정된 산소 분압도의 차이와 상호 비교 결과에 대한 보고
유승훈,김응학,권순원,김종수 대한소아치과학회 2000 大韓小兒齒科學會誌 Vol.27 No.4
진정요법하의 치과치료에서 환자의 상태를 지속적으로 감시하는 것은 매우 중요하다. 여러 방법 중 가장 널리 사용되는 것중 Pulse Oximeter가 있다. Pulse Oximeter는 비침습적 방법으로 계속해서 동맥혈액의 산소포화도를 측정할 수 있도록 고안된 장치로서 기기에 나타나는 산소포화도(SpO₂)는 실제로 측정한 동맥혈액의 산소포화도(SaO₂)와 거의 일치하는 것으로 알려져 있다. 본 진료실에 있는 세종류의 Pulse Oximeter를 이용하여 한 환자에게 동시에 두 개의 기기를 적용하였을 경우, 산출값을 상호 비교한 결과, 짧은(3회) 맥박수를 평균하는 기기가 낮은값이 나왔으며, 다른 두개의 Pulse Oximeter와 유의한 차이가 있는 것으로 밝혀졌다. 짧은 맥박수를 평균하는 기기는 반응이 빠르나, 산소포화도의 값이 작게 산출되고, 외부의 신호에 더욱 민감하여, 오류가 존재할 가능성 또한 높다. 기기의 특성을 알아, 술자는 적절한 기기를 선택하는 것이 중요하다. A major concern in pediatric dentistry is maximizing risk mangement through optimal monitoring of respiratory function during sedation techniques, and Pulse Oximeter is one of the most popular devices for these purpose. Pulse Oximeter is non-invasive device for detecting the sensitive fraction between the saturated & desaturated hemoglobin. Several Studies proved that there is no significant difference between the SpO2 and SaO2 . In this article, We examined three Pulse Oximeter (3300MXR, OX90R, BPM200R). The Pulse Oximeter using shorter pulse beat averaging showed more sensitive reaction to the statue of the patient and lower saturation data. We compared pair of Pulse Oximeter applied to one patient at one time. And BPM200R (using shorter pulse beat averaging) showed statistically low saturation
재해성 요추 추간판 탈출증의 역학 및 임상적 연구 : 비재해성 추간판 탈출증과 비교분석
권순용,이승구,장일석,김지홍,임영 대한산업의학회 2000 대한직업환경의학회지 Vol.12 No.2
Objectives : The purpose of study was to define the clinical and epidemiological factors of HNP and to provide the meaningful sources for establishing a prognosis and a rationale for clinical management of occupational low back problem. Methods : This study was performed at eight branch hospitals of Catholic University of Korea and several governmental hospitals for occupational disorders around the Kyunggi province of Korea since Jan. 1985. We analyzed the several factors about lumbar HNP through comparative study of the hospital admission series of each 200 patients in both occupation- and nonoccupation related, subjected to epidemiologic and clinical investigation, respectively. Results : 1. Mean age of occupational HNP was younger (30.9±8.8) than non-occupational HNP (35.2±10.5) (p〈0.05). 2. The duration of clinical symptom before admission was longer in non-occupational HNP(19.9±22.8 Mo.) than in occupational HNP(6.9±12.4 Mo.) (p〈0.05). 3. The symptomatic attack before admission was more frequent in non-occupational HNP(3.7±1.9) than in occupational HNP(2.5±0.9) (p(0.05) 4. There were no significant differences in physical findings between two groups, except for low rate (63%) of straight leg raising test (SLR) limitation in occupational HNP compared to non-occupational HNP(83%) (p〈0.05). 5. Even though The main reason for operative intervention was a failure of conservative treatment in both groups (p〈0.05), extruded subligamentous type was predominant(50%) in occupational HNP (p〈0.05), whereas extruded transligamentous type occupied major portion (67.8%) in non-occupational HNP (p〈0.05). Conclusion : The clinical results were poor in occupational HNP in both conservative and operative management groups, compared to non-occupational HNP (p〈0.05) and mean durations admission and re-admission rate was higher in occupational HNP, compared to non-occupational HNP (p〈0.05).
노성규,최승순 江原大學校附設體育科學硏究所 1997 江原大學校附設體育科學硏究所論文集 Vol.- No.21
The purpose of this study is to identify the effects of all-out exercise on the change of β-endorphin concentration in plasma and offer basic information for exercise and health. Thirty voiuntary students joined in this experiment : 5 boxers and 5 untrained students in S-middle school, 5 volleyballers and 5 untrained students in S-high school and 5 cyclist and 5 untraineds in D-university. Blood sample of students were extracted from the antecubital vein by 8㎖ during rest and after all-out exercise, and analyzed by RIA method. Results from analyzed data through the test of statistical significancy by group were follows : 1) The concentration of β-endorphin between the trained and untrained after all-out exercise were increased. (P<0.05) 2) The concentration of β-endorphin after all-out exercise in trained were showed significantly higher than those of untrained. (P<0.05) 3) β-endorphin concentration during rest were showed no difference between the trained and untrained. 4) There were presented increasing trends of β-endorphin concentration after all-out exercise compare with the rest in middle school and high school with no statistical significancy.
원격 퍼스컴회의 시스템의 다자간 접속을 위한 SAS 구현
崔承鎬,張晟柱,鄭順玉 東新大學校 工業技術硏究所 1997 工業技術硏究 Vol.3 No.-
In this paper, we suggest new MCU to implement multipoint connection in the SAS of remote PC conference systems. The MCU should observe recommendations of H.231 and H.234 of ITU-T. While mixing video data, the number of attendants in limiteded because it decodes bit stream and then encodes again, therefore, multicasting in the application layer should be implemented to solve the limited element. This program implemented the module that enables group manager of SAS and group server to procede and transmit multimedia data. The validity of paper was proved by implementing the function of image rotation that can display all of attentant in SAS of romote PC conference. The main service system is implemented based on Windows NT and Visual C^(++) 2.0.
BAF Annealing에서 저온점의 온도변화에 관한 연구
김순경,이승수,김문경,전언찬 동아대학교 공과대학부설 생산기술연구소 1997 生産技術硏究所硏究論文集 Vol.2 No.2
As demand for various kinds and small lot products has been increasing, batch annealing has been appreciated for its small restriction for the operation. The cold spot of the coil is very inportant in the BAF(Batch annealing furnace) annealing process. Because of the annealing cycle time in the BAF, annealing was decided on the cold spot of the coil. So, we tested the effect, variation of cold spot, for hydrogen contents of atmospheric gas at the annealing furnace. As a result of several investigations. We confirmed the following characteristics ; after the heating and soaking, the cold spot of coil moved to 1/3 of coil thickness in the HNx atmospheric gas, but the mid point of the coil thickness is the cold spot in the Ax or H₂atmospheric gas. Therefore, the use of hydrogen instead of nitrogen as the protective gas, combined with high convection in batch annealing furnaces, has shown that considerable increases in furnace output and material quality are attainable. Owing to the low density, high diffusion and reducing character of hydrogen, a better transfer resulting in uniform material temperatures and improved coil surfaces can be achieved.
보리새우 乾製品의 맛成分 (1) : 遊離 아미노酸에 關하여 On free amino acid contents
姜晉順,金成姬,鄭承鏞,禹永淑 진주여자전문대학 1985 論文集 Vol.7 No.-
This study was made to analysis of taste compounds in extracts which may participate in flavor and taste, in dried Prawn. Penacus japonicus. The changes of such compounds during sun during as free amino acids were analyzed. The results are summarized as follows : Among the free amino acids analyzed, glycine, arginine, proline, taurine and alanine were found in large amounts in the raw extracts, the amount of valine, methionine, isoleucine, leucine and tyrosine were low. The free amino acids were not changed in composition but the decrease of total free amino acid was approximately 588 mg% during sun during. In sun dried prawn, glycine, arginine, taurine, proline and alanine were abundant too.
宋勝己,崔 悳,趙順基 明知大學校 自然科學硏究所 1984 자연과학논문집 Vol.2 No.-
Complex dielectric constants of the V?O? .B?O?.Al?O? glass system have been investigated as a function of frequency from 400 to to 10?Hz and temperature 100 to to 400?k. Dielectric constant and dielectric loss decrease with increasing frequency when temperature is constant, and increase with increasing temperature.
V₂O5·B₂0₃·Al₂0₃유리계의 N₄ : N₄in the V₂O5·B₂0₃·Al₂0₃Glass System
趙順基,宋勝己 明知大學校 自然科學硏究所 1983 자연과학논문집 Vol.1 No.-
B' NMR spectra have been used to study the structure of glasses in the system ??·B₂O₃.Al₂O₃. The fraction N₄of boron atoms in BO₄units is measured and analyzed according to a structural model. In this study, it is found that the N₄values are 0.013±0.03∼0.038±0.005 which are very small in values, indicating that the interaction between the electric quadrupole moment and the electric field gradient in boron sites are strong in this compound.