아크제트 플라즈마에서의 메탄 건식 개질의 특성

황나경(N. K. Hwang),차민석(M. S. Cha),이대훈(D. H. Lee),김관태(K. T. Kim),이재옥(J. O. Lee),송영훈(Y.-H. Song) 한국연소학회 2008 KOSCOSYMPOSIUM논문집 Vol.- No.-

The reaction mechanism of methane dry reforming has been investigated using an arc-jet reactor. The effects of input power, CO₂ /CH₄ and added O₂ were investigated by product analysis, including CO, H₂, C₂HY and C₃HY as well as CH₄ and CO₂. In the process, input electrical power activated the reactions between CH₄ and CO₂ significantly. The increased feed ratio of the CO₂ to CH₄ in the dry reforming doesn't affect to the CH₄ conversion but increase the selectivity of CO with suppressing the reaction of H₂ generation. Added oxygen can also increase not only CO selectivity but also CH₄ conversion, For more understanding these results. the reaction has been compared with thermo-equilibrium calculation.

The Tuning of the KEK-PS K2 Beam Line for the Hybrid-Emulsion Experiment

Ieiri, M.,Kim, J.Y.,Kim, T.I.,Song, J.S.,Park, I.G.,Chung, K.H.,Kim, C.O.,Park, J.N.,Bahk, S.Y.,Kim, S.K. 慶尙大學校 기초과학연구소 1988 基礎科學硏究所報 Vol.4 No.-

We have shortened the downstream part of the K2 beam line from the original design to raise the kaon yields for the requirement. A layout of the modified K2 beam line is shown in fig. I and the total beam length is 25.7m. Since the high beam flux is not required. Q5 which made the beam flux is not required. Q5 which made the beam achromatic at FF, is omitted. The drift length between Q5 and Q7 is adjusted, so that the total length becomes short and that the beam ellipse at FF satisfies the above condition.

한국재래산양의 성장과정에 따라 Stress 가 혈액성상에 미치는 영향 - 3 . 혈액화학치에 관하여

송우준,이병오,함수근 경상대학교 축산진흥연구소 1988 畜産振興硏究所報 Vol.15 No.1

This study was carried out to investigate the physiological reaction of Korean native goats weighing 4.5 to 14.5kg affected by the transportation stress and binding stress according to growth period. Six goats were alloted into respective months from 1 to 5 after birth. Animals were transported for 20 minutes and continuously bound for 60 minutes. Pictures of red blood cell were observed at 1 and 4 hours after these treatments. Blood samples were drawn from the jugular vein of animals. Blood samples before the stress treatments were used as control. Some changes were observed in the pictures of red blood cell according to treatment times and growth period. The results obtained were summarized as follows. 1. Serum creatinine concentration was significantly (P$lt;0.05) decreased by the stress treatments at 3 months of age but was not affected at other months of age. The concentration progressively (P$lt;0.05) increased as the animals grew up and also was significantly (P$lt;0.05) high at 4 hours after stress treatments. 2. Serum cholesterol concentration was significantly (P$lt;0.05) increased by the stress treatments at 4 and 5 months of age but only tended to increase at 1 to 3 months of age. The concentration progressively (P$lt;0.05) decreased in all the treatments as the animals grew up. 3. Serum glucose concentration was significantly (P$lt;0.05) increased by the stress treatments and although there were no differences as the months advanced, the concentration was significantly high (P$lt;0.05) in the animals 1 month old at 4 hours after stress treatments. 4. Total serum protein content was significantly (P$lt;0.05) decreased by the stress treatments at most months of age and the content markedly (P$lt;0.05) increased as the animals grew up. According to the above results, it could be concluded that the stress treatments gave a sensitive influence on concentration of cholesterol, glucose and total protein of blood serum according to the growth period.

한국식품의 영양성분에 관한 조사연구(제4보)

김기경,송철,권혁희,김인복,안경옥,이명화 國立保健硏究院 1971 국립보건연구원보 Vol.8 No.-

1.88A GeV ^56Fe 중이온에 의해 원자핵건판 내에서 회절들뜸 및 준회절들뜸 기구로 생긴 다중발생

김종오,김태연,천병구,박인곤,송진섭,윤천실,박상렬,이경언,김재률,김태익,박명렬,임인택,장한일,박복남 慶尙大學校 기초과학연구소 1990 基礎科學硏究所報 Vol.6 No.-

원자핵건판 내에서 1.88A GeV의 에너지를 갖는 ^56Fe 중이온(heavy ion)의 평균자유행로는 비적추적법(along-the-track scanning method)을 사용하여 8.01±0.27㎝로 측정되었다. ^56Fe 주이온에 의한 회절들뜸반응을 KHP 판정법으로 찾아내었으며, 회절들뜸반응에 대한 평균자유행로는 0.86±0.10m로 측정되었다. 입사중이온의 정지계 내에서 ^56Fe 중이온에 의한 80개의 회절들뜸 및 준회절들뜸반응에 대한 알파입자와 단일하전 입자의 의사신속도 분포는 각각 (γ_a-η_b)_max=3.31, (γ_a-η_b)_max=2.30에서 최대값을 갖는 가우스분포함수 형태를 이루었다. By employing the method of along-the -track scanning. the mean free path of inelastic collisions for 1.8A GeV^56Fe heavy ion in nuclear emulsion is measured to be 8.01±0.27㎝. "Diffractive Excitation" events are identified by using the KHP method and the mean free path of diffractive excitation is measured to be 0.86±0.10m. The distributions of pseudorapidities of alpha and singly-charged fragments for diffractive excitation of 1.88A GeV ^Fe heavy ion are well fitted by Gaussian distribution function with peaks having (γ_a-η_b)_max=3.30 and (γ_p-η_b)_max=2.24.

변조 고주파에 의한 금속표면 결함 검출

김진옥,송기영,정성혜,주광태 韓國非破壞檢査學會 1999 한국비파괴검사학회지 Vol.19 No.3

고주파를 이용하여 금속 표면의 원형 프레스 결함, 원형 관통 결함 및 선형 프레스 결함 등을 조사하였다. 본 실험에서는 3kHz로 변조된 9.2GHz의 주파수를 사용했으며, 조사 방법으로는 반사법, 투과법, 주파수 고정법 등을 이용하였다. 고주파가 원형 프레스 결함과 원형 관통 결함에서 반사 신호의 크기가 큰 폭으로 변했다. 원형 프레스 결함에서는 반사신호에 의한 결함의 크기가 원래 크기의 2.5배로 확대되어 측정되었으며, 원형 관통 결함에서는 결함의 크기가 두배로 확대되어 측정되었다. 또한, 선형 결함에서 고주파 반사신호의 크기는 결함폭의 증가와 함께 커졌으며, 결함 깊이가 2.4mm 일 때 결함폭이 50mm에서, 결함 깊이가 2.1mm 및 0.45mm에서는 결함폭이 55mm일 때 각각 최대값을 나타냈다. The defects on the metal surface, such as the ended circular pressed hole, the penetrated circular drilled hole, and the linear hollow lanes have been investigated by means of the microwave. In this experiment, frequency was set at 9.2GHz with 3kHz modulation, and the methods of reflection, transmission, fixed carrier frequency, and moddemodulated technique have been used for investigating defects. The magnitudes of the microwave signals have been changed at the ended circular pressed hole and the penetrated circular drilled hole. The defect sizes that were estimated from the reflected microwave signals had the dimensions enlarged by twice the original size of the penetrated circular drilled hole and 2.5 times the original size of the ended circular pressed hole. The magnitudes of the reflected microwave signals from the linear hollow lane have increased with expansion of the width of the notch. In the linear hollow lane with the depth of 2.4mm. the reflected microwave signals versus the defect widths had a maximum value at the defect width of t0mm, and in the linear hollow lanes with the depths of 1.2mm and 0.45mm, the reflected microwave signals versus the defects widths had the maximum values each at the defect depths of 55mm.

국소마취제의 중추적 독성과 뇌부위별 dopamine 성 신경활동에 관한 연구

오귀옥,박병건,조남표,송요한,박수정 全北大學校 齒醫學硏究所 1987 전북치대논문집 Vol.5 No.1

Administration of convulsive dose of local anesthetics is believed to change the activity of central aminergic neuron in laboratory animals. In the present study. subconvulsive dose of lidocaine(25, 50 ㎎/㎏ i.p) was injected into rats after synthesis inhibition of catecholamine by α-methyltyrosine administration (250 ㎎/㎏ i.p), which were killed after 0, 2, 4 hours. Four brain parts were analyzed for dopamine by HPLC-electrochemical detection. Lidocaine induced the significant increase of dopamine concentration in striaturn (2, 4hr) and hypothalamus (4 hr), but dose-dependent effect was observed only in the striatum. Dopamine turnover rate was also decreased in the striatum and hypothalamus with statistical significance. However, hippocampus and frontal cortex showed no significant: change of dopamine concentration and turnover rate.

Fuzzy 위상 벡터공간에 관하여

박거덕,송광우,정원일,임영빈 동국대학교 자연과학연구소 1989 자연과학연구 논문집 Vol.9 No.-

1965년 L.A. Zadeh에 의하여 Fuzzy set의 개념이 소개된 이래 여러 분야에서 연구되어 왔다. 특히 Katsaras, Liu 그리고 Lowen은 Fuzzy topological vector space의 성질에 관한 연구를 하였다. 이 논문에서는 그들의 정의와 성질을 이용하여 Fuzzy topological vector space에서의 기본성질 그리고 coproductness와 factorization에 관하여 조사하였다. Since L.A.Zadeh had introduced the fundamental concept of fuzzy set in 1965, fuzzy set has been studied on various areas. As one of them, Katsaras, Liu and Lowen stuided the properties of fuzzy topological vector spaces. After presenting a brief survey of the development of the theory of fuzzy topological vector spaces, we establish basic properties of a fuzzy topological vector space. Furthermore, we investigate the coproductness and the factorization of fuzzy topological vector spaces.

수핵란의 전활성화가 토끼 핵이식 수정란의 체외발달에 미치는 효과

전병균,송상현,정기화,곽대오,이효종,최상용,박충생 경상대학교 유전공학연구소 1997 遺傳工學硏究所報 Vol.16 No.-

To examine the efficiency of nuclear transplantation the influence of electrical preactivation of recipient cytoplasm on the in vitro developmental potentyl in the nuclear transplant rabbit embryos were evaluated. The embryos of 16-cell stage were collected and synchronized to G₁phase of 32-cell stage. The recipient cytoplasms were obtained by removing the first polar body and chromosome mass by non-disruptive microsurgery procedure. The separated G₁phase blastomeres of 32-cell stage were out into the non-preactivated and/or the preactivated recipient cytoplasm by electrical stimulation. After culture until 20h post-hCG injection, the nuclear transplant oocytes were electrofused. The fused nuclear transplant embryos were co-cultured with rabbit oviduct for 120h, the nuclear transplant embryos developed to blastocyst stage were stained with Hoechst 33342 and their blastomere were counted. The electrofision rate was similar to the non-preactivated and preactivated recipient cytoplasm(81.8 and 85.7%, respectively). However, the in vitro developmental rate to blastocyst stage with the non-preactivated recipient cytoplasm(163.7cells), as compared with the preactivated recipient cytoplasm(85.4 cells). These results considered better that non-preactivated oocytes, MⅡ phase oocytes, were used for recipient cytoplasms in the rabbit nuclear transplant procedure.

치즈 제조 부산물을 이용한 ELISA Blocking Agent의 개발에 관한 연구

유제현,송진욱,조흥찬,차광종,박범석,김응률,이종익,이중복,谷口孝喜 건국대학교 동물자원연구센터 1999 動物資源硏究誌 Vol.20 No.-

본 연구는 유청과 탈지분유를 blotto로 이용하여 ELISA 수행시 항원·항체반응에 비특이반응을 막는 Blocking agent를 탐색하기 위해 실험을 수행했다. MAb의 역가측정 결과 유의차가 인정되는 OD값이 0.3이상 검색된 희석배율은 1B2의 경우 819,200배, 6D4의 경우 1,638,400배, 15B10의 경우 204,800배이었다. 서로 다른 Blotto가 항원·항체반응에 미치는 영향을 각기다른 MAb를 이용하여 조사해 본 결과 MAb Yo-156, Yo-5는 Blocking agent로 표준적으로 사용하고 있는 BAS가 비교하여 group A 바이러스 7종 모두에 비슷한 정도의 발색을 일으켰으며, MAb G6는 G6 type바이러스 4종 모두에서 비슷한 정도의 발색을 일으켰고, MAb G10은 G10 type 바이러스 3종 모두에서 비슷한 정도의 발색을 일으켰다. 따라서 본 실험에 사용한 모든 종류의 blotto소재인, 탈지분유1(서울우유(협)), 탈지분유2((주)매일유업), 혼합탈지분유((주)매일유업), whey powder1(Sigma), whey powder2 ((주)삼익유가공), WPC34((주)환이상사), WPC800((주)후드피아), WPC8000 ((주)후드피아), WPI((주)환이상사)는 현재 Blocking agent로 사용하고 있는 BSA와 비교하여 유사하게 비특이 반응을 막아주는 것으로 밝혀져 경제적으로 보다 저렴한 blotto 소재로 이용이 가능하다는 사실을 확인하였다. Enzyme-Linked-Immuno-Sorbent-Assay (ELISA) has been frequently used for detection of interaction of antigen and antibody. Many efforts have been made to reduce nonspecific reaction of ELISA. Bovine serum albumin (BSA) is usually used for blocking the nonspecific reaction even thought it is expensive. Recently skin milk has been focused on blocking nonspecific reaction of ELISA. This study aimed to substitute expensive blocking agent of ELISA with cheap by-product of cheese manufacture. To evaluate the substitution of BSA with wheys made in different companies, ELISA was carried out using monoclonal antibodies (MAbs) against rotavirus. The blocking capacity of the whey was compared with that of the BSA. The commercial wheys showed the same activity as BSA when ELISA was performed using MAb YO-156, S2-37, and Yo-5. To further investigate whether the whey affects the detection specificity of MAb, the ELISA was carried out using type specific MAbs. MAb G6 specific to serotype G6 bound to only rotavirus serotype G6 such as NCDV, UK, JBR, and Jedong strain whereas MAb G10 specific to serotype G10 bound to serotype G10 rotavirus only, demonstrating that the whey a and no effect on the binding specificity of MAb with respect to antigen-antibody reaction. These data indicate that the whey may have no effect on specific interation of antigen-antibody and may be widely used for blocking substitute because of competitive priority of its price.