人 諸臟器 Alkaline Phosphatase Isoenzyme의 電氣泳動 및 定量

金在植,金京善,金重明,金榮泰,蔣卓仙,李鉉基 慶北大學校 醫科大學 1980 慶北醫大誌 Vol.21 No.2

著者들은 家兎와 人體로부터 採取한 血淸과 諸臟器組織을 使用하여 ALPI 電氣泳動像을 觀察하고 生化學的 定量法을 利用하여 ALP의 活性度를 測定試圖하였으며 臟器特異性 沮害因子에 對한 影響을 觀察하였다. 家兎 血淸 및 諸臟器組織 ALPI電氣泳動에서 血淸은 ±의 活性度를 가진 α2와 α2/β分劃을 나타내었으며 肝組纖은 血淸보다 빠른 移動度를 가진 ??의 α_1과 α_2分劃을 나타내었다. 그리고 肝, 骨, 腎 淋巴腺, 脾臟 및 腸組織에서는 顯著하게 높은 活性度를 나타내는 各各 서로 相異한 分劃을 볼 수 있었으며 人體諸 臟器와大體로 類似하였으나 家兎 血淸의 ALP는 사람에서 와는 다르게 肝組織의 分劃과 一致하지 않고 오히려 骨組織과 더 잘 一致되는 것 같았다. ALPI 活性度에 있어서 家兎의 諸臟器는 生化學的 定量法으로 腎 ALP의 活性度가 49.5B.L. units로 다른 臟器組織에 비하여 顯著하게 높았으며, 그 다음은 脾臟, 脊椎骨, 肝, 肺淋巴腺 및 脾 順으로 높은 活性度를 나타내었으며 人體에 있어서는 胎盤, 骨, 小賜, 脾臟, 肝 및 腎臟의 順으로 높았다. 臟器 特異性 沮害因子에 對한 影響에 있어서 胎盤分劃은 特有하게 耐熱性을 나타내었고 보다 urea低抗性이며 肝分劃은 neuraminidase에 對하여 移動度의 遲延을 招來하였다. The studies upon cellulose acetate microzone electrophoretic patterns, quantitative estimation and effects of organspecific inhibitor on ALP isoenzyme of rabbit and human sera and various organ tissues were performed. On electrophoretic pattern the tissue ALP from the liver bone kidney lymph node spleen and intestine showed the characteristic fraction of high activities. The electrophoretic mobility of rabbit serum ALP was not correspond to the liver ALP as observed in human serum and it appeared to be rather corresponded to the bone ALP, which seemed to be the origin of ALP in serum of rabbit. In the quantitative measurement of tissue ALP activity the kidney ALP showed the highest level and the activity of the skeletal muscle ALP was the lowest(1.5 B. L. units), while higher activities were observable in placenta, bone, intestine, spleen, liver and kidney in order. On the effect of organ specific physico chemical agents the placental ALPI was highly stable to the heat and relatively resistant to urea while other organ ALPI were on the contrary. The neuraminidase seemed to effect to the motility of liver fraction.

전기솥과 압력솥을 이용한 기능성 강화쌀과 일반쌀의 취반 특성 연구

김혜영,김지연,이인선 한국식생활문화학회 2004 韓國食生活文化學會誌 Vol.19 No.3

The Physicochemical, sensory and cooking properties of functionally fortified rice with dietary fiber and chitosan were compared with regular rice when the rices were cooked with pressure and electric cookers. Moisture content of functional rice before cooking was 11.11%, which was lower than 13.72% in regular rice. Accordingly, moisture contents of functional rice samples cooked both with pressure and electric cookers were lower than those of regular rice. L value showing the degree of lightness of cooked rice was significantly higher in rice samples cooked with pressure cookers. The a value, the degree of redness and the b value, the degree of yellowness, were the highest in the functional rice cooked with an electric rice cookers. Textural measurement of hardness using a rheometer showed the highest value in functional rice cooked with a pressure cooker. The degree of gelatinization measured using differential scanning calorimetry (DSC) before cooking showed higher onset gelatinization temperature (T_0) and peak gelatinization temperature (T_p) in functional rice compared with those in regular rice. The gelatinization enthalpy (ΔH) of functional rice was lower than that of regular rice, showing that functional rice had lower gelatinization energy compared with regular rice. When the samples were stored in a refrigerator for one week, the DSC showed faster retrogradation degrees in samples cooked with electric rice cooker, having significantly higher enthalpies of regular and functional rice cooked with electric cookers compared to those cooked with pressure cookers. The functional rice samples cooked with pressure cooker had higher consumer acceptance test values compared to those cooked with electric cookers.

SO_(2) 가스에 의한 Fe-Ti-C合金의 高溫酸化에 關한 硏究

김신기,오택열,백영남 慶熙大學校 材料科學技術硏究所 1990 材料科學技術硏究論集 Vol.3 No.-

The high temperature oxidation reaction of Fe-Ti-C alloys was investigated in 1 atmospheric SO_(2) gas pressure at temperature range 600℃ to 800℃. The oxidation rate of the alloys was determined by a thermogravimetry analysis. The structure and the composition of the reaction products were identified by aid of SEM, EDS analysis and X-ray diffraction technique. The overall reaction process obeyed a parabolic rate law at the temperature range 600℃ to 800℃, in which the reaction rate increased with an increase in the temperature. An increase in the reaction rate results mainly from the poor adherence and cracks of the scale from the growth stress in the scale and the evoultion of CO_(2)(orCO) gas between the scale and alloy. The scales consisted of several layers of Fe_(2)O_(4), α-Fe_(2)O_(3) and TiO_(2)

FAH-전지의 효율파라미터에 대한 광세기 및 온도특성

장지근,김장기,김민영 단국대학교 신소재기술연구소 1991 신소재 Vol.1 No.-

위성전원용 태양전지로 사용할 수 있는 새로운 구조의 FAH-전지로부터 효율파라미터 특성이 입사 광전력의 세기(I=20∼1000 mW/㎠)와 온도 (T=0∼140℃)에 따라 어떻게 변화되는가를 측정하고 이 결과를 분석하였다. 일정한 온도(T=30℃)에서 광세기가 증가할 때 FAH-전지의 개방전압(V_oc)은 20∼200 mW/㎠ 범위에서 v_oc=0.66+0.067·log(I/20) [V]로, 200∼600mW.㎠ 에서는 V-oc=0.727+0.04·log(I/200) [V]의 관계로 증가하는 특성을 나타내고 600 mW/㎠ 이상에서는 0.75 [V]로 포화되었다. 충실도(F·F)는 100mW/㎠ 이하에서 F·F=0.815∼0.0858·log(I/20)으로, 300 mW/㎠이상에서는 F·F=0.65∼0.5164·log(I/300)의 관계로, 광세기에 따라 감소하는 특성을 보였다. T=30℃일 경우 전지의 효유(EFF.)은 100mW/㎠이하의 광세기에서 거의 일정한 값으로 나타나고(EFF.≒EFF_*ref=EFF.|I=100 mW/㎠) 300mW/㎠ 이상의 광세기에서는 EFF.=Eff_*ref·[0.9-0.412·log(I/300)]로 효율이 급격히 저하되었다. 또한 일정한 광세기(I=100 mW/㎠)에서 단락전류(I_se는 온도가 증가함에 따라 단조증가하며 T<30℃에서 dI_se/dT=0.0006 mA/℃로 나타났다. 개방전압의 감소율은 전체 측정온도 범위(T=0∼140℃)에서 dV_oc/dT=-0.002 V/℃로 나타났으며, 충실도(F·F)는 T=0∼20℃, 20∼90℃, 90∼140℃의 각 영역에서 -0.275%/℃, -0.1357%/℃, -0.1 %/℃의 율로 감소하였다. 전지의 효율은 T=30℃의 갑(EFF. |T=30℃=EFF.ref)을 기준할 때 T<20℃에서 EFF.=EFF.ref·[1-0.0034·(T-30)]의 관계로 나타나고 그 이하의 온도에서는 효율이 1.05·EFF.ref의 값으로 포화되는 현상을 보였다. The effect of light intensity(I=20∼1000mW/㎠) and temperature(T=0∼140℃) on the efficiency parameters of a new FAH-solar cell is exeprimentally and theoretically investigated n this paper. Under the constant temperature(T=30℃), the increase of light intensity gives the open circuit voltage(V_oc) varing with the relation of 0.66+0.067·log(I/20) [V] and 0.727+0.04·log[I/200] [V] in each range of I=20∼200[mW/㎠] and I=200∼600[mW/㎠]. The open circuit voltage is, however, nearly saturated to 0.75[V] above 600[mW/㎠]. The fill factor is decreased with the relation of 0.815∼0.0858·log[I/20] below 10[mW/㎠ and 0.65-0.5164·log[I/300] above 300[mW/㎠]. The conversion efficiency(EFF.) shows the constant value of EFF-*ref=EFF.|_I=100mW/㎠ below 100[mW/㎠], but decreases with the relation of EFF.=EFF_*ref·(0.9-0.412·log[I/300]) above 300[mW/㎠]. Under the constant light intensity(i=100mW/㎠), the increase of temperature gives the short circuit current increasing with the rate of dI_sc/dT=0.0225[mA/℃] below 30[℃], and dI_sc/dT=0.006[mA/℃] in the range of 30∼140[℃]. The open circuit voltage is decreased with the rate of dV_oc/dT=-0.002[V/℃] The fill factor is decreased with the rate of -0.275[%/℃], -0.1357[%/℃], and -0.1[%/℃] in the ranges of 0∼20[℃], 20∼90[℃], and 90∼140[℃], respectively. The conversion efficiency is decreased with the relation of EFF.=EFF_*ref'·[1-0.0034·(T-30)] above 20[℃], and saturated to 1.05 EFF_*ref' below 20[℃].

TiO/SiO_2를 이용한 Si FEA 게이트 절연막 연구

장지근,김민영,정진철 단국대학교 신소재기술연구소 2000 신소재 Vol.9 No.-

TiO/SiO_2 이중막을 게이트 절연막으로 이용하여 3극형 Si FEA를 제작하였다. conventional Si FEA 제작에서 TiO/SiO_2 이중막의 사용은 TiO층이 Mo 금속의 접착력을 증가시켜 주므로 BHF용액에서 sharpening oxide를 제거할 때 Mo 금속이 뜨는 현상을 방지할 수 있다. 또한 TiO층은 양호한 절연막의 역할을 수행하면서 BHF 용액에 거의 녹지 않아, 소자제작에서 게이트홀의 과도한 측면인식과 게이트-캐소드간의 누설전류를 줄일 수 있다. The TiO/SiO_2 bilayer as gate insulator was applied in the conventional process of triode-type Si FEA. The application of TiO/SiO_2 bilayer prevents the Mo electrode film on the gate insulator form floating in the BHF solution during the removal of sharpening oxide. This is the result from the improved adhesion between Mo and TiO film. Moreover, TiO film with the property of good insulation is not solulable reduction of the side-etching of gate hole around Si tip and the leakage current between gate and cathode compared to those of the conventional device with the deposited SiO_2.

유압관로에서 비정상 압력측압공의 동특성에 관한 연구

나기대,유영태,김지환 조선대학교 에너지.자원신기술연구소 2000 에너지·자원신기술연구소 논문지 Vol.22 No.2

In this study, the analysis of the dynamics characteristics and performance investigation of the pressure measurement in the hydraulic pipe. The exact solution of the frequency response is obtained by using the complicated transfer function. The discrepancy with the exact and the approximate is small, so the approximation solution is adopted to compare the experimental result with the theoretical analysis. The pressure measurement in the hydraulic pipe is caused by length of capillary and according to the end volume size. The experimental and calculate result show that characteristic of the pressure .measurement in the hydraulic pipe varies with the length of capillary and volume size. Therefore present theoretical formulation and experimental result can be used generally in designing and performance evaluation of all the hydraulic pressure measurement in the hydraulic pipe

유압관로의 임피던스 전달특성

유영태,나기대,모양우,김지환 朝鮮大學校 機械技術硏究所 2003 機械技術硏究 Vol.6 No.2

Design for quite operation of fluid power system requires t h understanding of noise and vibration characteristics of t h system This paper presents a dynamic response of design of hydraulic circuit. Experimental investigations on the attenuation characteristics of pressure ripple in automotive power steering hydraulic pipe with dynamic response of hydraulic pipe line is examined.

수준별 영어과 수업에서의 학습지 모형에 관한 연구

곽동기,김영경 부산여자대학교 교육과학연구소 1998 교육과학연구 Vol.- No.3

만성주정중독자의 뇌간청각유발전위반응

박영숙,김정기,김종길 大韓神經精神醫學會 1988 신경정신의학 Vol.27 No.6

Brainstem auditory evoked potentials(BAEP) were studied in 11 male chronic alcoholics and 11 normal male controls. Alcoholic patients met the Research Diagnostic Criteria and the criteria of the DSM-Ⅲ for alcoholism, with a mean age of 46 years and drinking history for an average of 22 years. Control subjects were age matched males recruited from hospital employees free of medical problems. The results were as follows: 1) The statistical analyses using two tailed t-test indicate that mean latency of peak V(P<0.01) and interpeak latencies ofⅢ-V(P<0.05)&I-V(P<0.05) were significantly prolonged in the alcoholic group compared to the control group. 2) Seven of the eleven patients(64%) displayed significant increases of the interpeak latencies of BAEP. 3) Five of the above seven patients displayed a significant increase of the I-V interval of BAEP. These results provide an evidence for the involvement of the brainstem as well as the neocortex in chronic alcoholism, suggesting that brainstem abnormalities in chronic alcoholics are common. Therefore we suggest BAEP could be well used as an noninvasive and objective measure of brainstem lesion in cases of chronic alcoholism and also a guide method for prognostic information as the previously reported in the literature of other countries.

물의 종류를 달리한 동치미의 경도 변화 및 세포벽 관찰

심영현,안기정,김지은 한국조리과학회 2004 한국식품조리과학회지 Vol.20 No.1

The purpose of this study was to investigate the changes of hardness and microstructure of Dongchimi cooked with various source of water(distilled water, purified water, Cho Jung Carbonated Natureal water). This study was conducted to observe the change of pH, total acidity, salt content, turbidity, texture and microstructure. Dongchimi cooked with source of water of water was fermented at 10℃ for 46 days. The changes of pH on Dongchimi cooked with various source of water decreased in all samples during fermentation period, and then showed a slowly decrease after 12 days of fermentation. The total acidity of Dongchimi cooked with Cho Jung Carbonated Natural water was arrived slowly at best tasting condition 0.3~0.4 point compared with other conditions. So Dongchimi cooked with Cho Jung Carbonated Natural water was continued to the best tasting condition for end of fermentation. At early stage of fermentation, the changes of turbidity of Dongchimi used Cho Jung Carbonated Natural water showed highly as compared with other test condition for 12th days of fermentation. The maximum cutting force of chinese radish of Dongchimi showed the highest value among all at the 25th day of ripening and then decreased gradually. The maximum cutting force of chinese radish of Dongchimi used Cho Jung Carbonated Natural water was the highest compared with other conditions at 25th day of fermentation. The calcium content of Dongchimi juice used Cho Jung Carbonated Natural water was observed high at the early stage of fermentation and showed the highest value at 25th day of ripening. The calcium content of chinese radish and Dongchimi juice of Dongchimi cooked with water purifier was lower than that of Dongchimi cooked with Cho Jung Carbonated Natural water, and was higher than that of Dongchimi cooked with Distilled water at the early stage of fermentation. The magnesium content in all samples increased gradually from the early stage of fermentation. The microstructure showed disintegration appearance of middle lamella and cell wall during fermentation period.