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중탄산나트륨(NaHCO₃)투여가 1000m 카누경기력, 혈액 pH, 그리고 혈중 젖산농도에 미치는 영향
장경태,이정수,배희정 韓國體育大學校附屬 體育科學硏究所 1993 韓國體育大學校附屬 體育科學硏究所論文集 Vol.12 No.1
The following experiment was conducted to examine the effects of NaHCO₃ ingestion on performance and selected blood parameters in 1000m canoe exercise. Six high school male kayakers participated in this study. Three time trials were conducted on three seperate occasions(control, placebo, NaHCO₃) at the Misari Olympic Rowing and Canoe facility. The dose of NaHCO₃ was 300mg per kg body weight and given to the subjects 90 min before the start of exercise. Time ives measured at 1000rn and at each four 250m. Blood samples were collected at rest, before exercise, and three minutes after the termination of exercise. The results are as follows : 1. Although ingestion of NaHCO₃ tend to decrease the 1000m canoe trial time, there was no significant difference between trials. 2. Blood pH was significantly increased 90 min after NaHCO₃ ingestion. 3. Although blood lactate concentration after exercise was higher in the NaHCO₃ trial, there divas no significant difference between each trials.
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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.
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裵長淳,李慶美 단국대학교 1993 論文集 Vol.27 No.-
The method of synthesis for silicon carbide by means of clay and industrial waste sawdust involves process of turning clay and sawdust by utilizing ferrous powder or ferric sulpate then baked within electric furnacd(700℃) produced coke. And then to the sample which fturned into coke NH_3, N_2 and H_2 gas were supplied and melted it (1500℃) and synthesized silicon carbide of β-SiC and by comparing the ferrous powder and ferric sulfate being employed at this time the rate of yield in the course of reaction was observed.
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다량의 균일한 액적 제조를 위한 분리막 기반 미세유체 소자 시스템
장문배, 유진오, 염경호 충북대학교 산업과학기술연구소 2013 산업과학기술연구 논문집 Vol.27 No.2
In this study, we designed the microfluidic device system based on the separation membrane for generating monodisperse emulsion droplets with diameters ranging from hundreds of nanometers to several micrometers. To generate fine droplets, T-junction and flow-focusing geometry are integrated into the microfluidic channel. Also put the membrane into the microfluidic device to make droplets effectively. PDMS devices can be easily, quickly, and inexpensively fabricated with superb resolution. However, PDMS devices are swelled other organic solvent. So we could produce droplets using fluorocarbon oil. The droplet size was controlled by adjusting the flow ratio between continuous phase flow and dispersed phase flow and also membrane pore size
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나경주,김원사,김문영,배인국,장영남 충남대학교 기초과학연구소 1994 연구논문집 Vol.14 No.-
For the blue sapphires from Santung, China, the color change before and after has been investigated by UV-Visible spectrophotometry method. The blue sapphires from Shantung show four groups of absorption bands: the bands A (374, 386 and 450 ㎚) being attributed to single Fe^3+ ion, the band B (560, 579 and 704 ㎚) to Fe^2+/Ti^4+ pairs, the band C (∼800 ㎚) to Fe^2+/Fe^3+ pairs, and the D (528 ㎚) to Ti^3+ dd transitions. From those UV-VIS characteristics the origin of blue color of the sapphires is confirmed to be attributed by the factors such as Fe^2+/Fe^3+ and Ti^3+/Ti^4+. The absorption spectra of natural blue sapphires before and after heat treatment show distintive features, comparing with those of sapphires from other localities: the bands of 689 ㎚ and of Cr^3+ are not recorded on the spectra of sapphires from Shantung. The band (492 ㎚), which resulted from Ti^3+, is not shown and the intensity of the band 528 ㎚ decreases after the heat treatment. Decoloration of ink-blue sapphires are found to be successful by heat treatment with the control of annealing and atmosphere. During the diffusion process the excess components of impurities contained originally in the host crystal were expelled to the surface of crystals, enhancing the transparency of the crystals noticeably.
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이규보,배선근,손상균,이재태,이건수,이경혜,서장수 경북대학교 병원 1997 경북대학교병원의학연구소논문집 Vol.1 No.1
1. 목적 급성백혈병의 화학요법에 있어서 관해유도 요법시에 보다 더 강력한 항암화학요법을 시행하고 골수억제의 회복을 위하여 말초혈액에서 채취한 조혈모세포의 투여로 그 효과를 증대시키고자 시도하였다. 2. 방법 관해유도 화학요법후에 골수억제시기로부터 회복단계로서 백혈구감소증이 호전도면서 단핵세포가 증가될 때에 말초혈액에서 조혈간세포(stem cell)로 인정되고 있는 CD34+세포의 함유량이 1% 이상되는 시기를 찾아내고 그 때부터 평균 4차례의 단핵구를 분리채집을 하여 -74。C에 냉동보관하였다가 제2차 화학요법후에 해동시켜서 정맥주입하였다. 3. 결과 대상 급성백혈병환자는 6명에 23회의 조혈간세포를 함유한 단핵구 채집을 시행하였고 유효한 단핵구의 채집은 4례에서 가능하였고 2례에서는 유효한 채집이 못되었다. 채집효율은 39.0-74.5%로서 평균 49.8%였다. 채집 후에 혈액학적 변화는 혈색소의 약간 감소 (평균 1.34g/dl)와 혈소판의 감소 (평균20.25%)를 나타내었다. 해동 단핵구를 투여할시에 일과성인 불쾌감, 기침, 흉부압박감, 호흡곤란 등이 있었다. 4. 결론 자가골수이식에서 자기말초혈액조혈간세포이식으로 관심이 이행되는 현시점에 자가조혈간세포를 채집하여 수혈하는 기술이 확립되는 기초를 이루었다고 본다. 이번 대상들은 재발된 금성백혈병들에 시행하였으나, 향후에는 초발시에 제일차 관해유도 화학요법 과정에 시도해야할 것으로 생각한다. Object: Peripheral blood stem cells(PBSC) were collected after remission induction chemotherapy and reinfused after intensified chemotherapy in order to increase the chemotherapeutic efficacy. Method: Collection of mononuclear cells (MNC) was started when CD34+ cells above 1% and WBC above 1,000/ul with mononuclear cell percentage above 30%, the collection procedures were done 2-6 time in each patient of total 6 cases. The collected MNCs were stored in - 750C and reinfused after thawing in the water bath at 370C Results: Twenty three collection procedures from the 6 cases of acute leukemia had made effective MNC collection in 4 cases and mean collection efficiency was 49.8%(from 39.0% to 74.5%). Hematological changes after the procedure were mean reduction of hemoglobin 1.34g/dl and mean 20.25% of decreased platelet count. There were noticed transient symptoms of discomfort, coughing, chest tightness and dyspnea in association with the infusion of stored cells. Conclusion: The basic process for the peripheral blood stem cell transplantation (PBSCT) was accomplished with this supportive care for the consolidation chemotherapy of acute leukemia. Effective PBSCT would be warrented with more qualified process and high does chemotherapy. (Korean J Blood Transfus 6(2) : 41~47,1995)
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