• Bulletin of the Korean Chemical Society
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• v.9 no.5
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• pp.280-282
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• 1988

The structural, electrical and magnetic properties were investigated for the high-Tc superconductor $YBa_2Cu_3O_{7-x}$, where x was 0.13. The results of temperature dependence of the resistivity and the magnetization in $YBa_2Cu_3O_{6.87}$ whose structure and phase are confirmed by arialysis of X-ray powder diffraction pattern have been reported. A very sharp superconductivity transition appears at 92K in the specimen whose chemical composition is determined from redox titration, strongly suggesting that this specimen consists of a single-phase superconductor. From the results of X-ray diffraction analysis, magnetization curves, levitation and resistance measurements, it is suggested that the observed superconductivity is bulk property in nature and that the $YBa_2Cu_3O_{6.87}$ phase is responsible for the superconductivity of the present reproducible specimen.

• Journal of Environmental Science International
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• v.15 no.7
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• pp.677-688
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• 2006

Currently, the application of $TiO_2$ photocatalyst has been focused on purification and treatment of wastewater. However, the use of conventional $TiO_2$ slurry photocatalyst results in disadvantage of stirring during the reaction and of separation after the reaction. And the usage of artificial UV lamp has made the cost of photocatalyst treatment system high. Consequently, we studied that solar light/$TiO_2$ film system was designed and developed in order to examine disinfection characteristics of sewage wastewater treatment. The optimum conditions for disinfection such as solar light intensity, characteristic of sewage wastewater, amounts of $TiO_2$ and comparison of solar ligth/$TiO_2$ systems with UV light/$TiO_2$ system was examined. The results are as follows: (1) photocatalytic disinfection process with solar light in the presence of $TiO_2$ film more effectively killed total coliform (TC) than solar light or $TiO_2$ film absorption only. (2) The survival ratio of TC and residual ratio of organic material (BOD, CODcr) decreased with remain resistant material. (3) The survival ratio of TC and residual ratio of organic material (BOD, CODcr) decreased with the increase of amounts of $TiO_2$. (4) TC survival ratio decreased linearly with increasing UV light intensity. (5) The disinfection effect of solar light/$TiO_2$ slurry system decreased more than UV light/$TiO_2$ film systems. (6) The disinfection reaction followed first-order kinetics. We suggest that solar light instead of using artificial UV light was conducted to investigate the applicability of alternative energy source in the disinfection of TC and the degradation of organic material.

• The Korean Journal of Nuclear Medicine
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• v.22 no.1
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• pp.65-76
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• 1988

High affinity complexes for the tumor were obtained by changing pH and composition in the preparation of $^{99m}Tc-DMSA$. The purpose of this study was to investigate the tumor affinity, and in vitro and in vivo characteristics of these complexes. The results obtained were as follows; 1) Tumor imaging agent was formed successfully at pH $6.0\sim9.0$ and renal imaging agent at pH $2.0\sim5.0$. 2) The serum protein binding of $^{99m}Tc-DMSA$ was $89.1\sim92.8%$ at pH $2.0\sim5.0$ and $11.8\sim30.5%$ at pH $6.0\sim9.0$ respectively, and it was not changed with time. 3) The T 1/2 of tumor affinity complex in blood between 3 and 6 hours after injection was $187{\pm}29$ minutes $(mean{\pm}SD)$. 4) In the blood, the radioactivity was mainly in the plasma, and less than 1% was in the cellular components. 5) In the Walker carcinosarcoma 256 bearing Wistar rats, the radioactivity in the kidney increased, and decreased in the skeleton with time. The radioactivity in the tumor showed the peak in 6 hours after injection and decreased thereafter. 6) In the tumor cell, the radioactivity localized mainly in the cytosol, the soluble fraction of the cytoplasm. This study provides the basic knowledge about tumor affinity and usefulness of $^{99m}Tc-DMSA$ in the diagnosis of malignant disease.

• The Journal of the Korea Contents Association
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• v.10 no.8
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• pp.301-307
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• 2010

The purpose of this study was to find out how diagnosis of hyperlipemia differed for according to BMI and %Fat. The included subjects were 224 adult women, they performed physical measurement and BMI measured %Fat by BIA. Blood pressure and lipid profiles were measured in the NPO state. The LDL calculated in using a formula of Friedwald and an atherogenic index was calculated using the serum TC lever divided by th HDL level As a results, HDL decreases so that BMI and %Fat increase and TC, TG, LDL, AI appeared by increasing. There was significant correlation(r=.585) between BMI and %Fat, and lipid profile correlation with BMI is higher than %Fat. In conclusion, diagnosis results of hyperlipemia according to BMI and %Fat could become different conclusively. In study it seems that BMI's diagnosis ability on hyperlipemia is high but the most desirable method uses BMI and %Fat together and evaluates lipid profile.

• Journal of radiological science and technology
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• v.12 no.1
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• pp.3-16
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• 1989

In order to investigate the in vivo effect of $^{60}Co$ radiation on rabbit liver, the uptake ratio and regional excretory value in hepatocytes and Kupffer cells were estimated during acute and chronic hepatic injuries. The left lobe of liver was irradiated at 15 Gy or 30 Gy with a single dose and subsequent changes were analysed with a seial nuclear medicine imaging by using $^{99m}Tc-phytate,\;^{99m}Tc-DISIDA\;and\;^{99m}Tc-HSA$ and resulting data were computerized. The degree of hepatic damage, duration of the injury, and recovery pattern after the irradation were in agreement with the findings of other investigations. However, out values were more quantitative evacuation than those of other publications. Recovery of decreased uptake of $^{99m}Tc-phytate$ was delayed approximately $2{\sim}3$ days later than that of $^{99m}Tc-DISIDA$. In acute radiation induced injury, the results demonstrated that the recovery of Kupffer cells was delayed more than that of hepatocytes. This discrepancy was considered due to the differences in repair activities between these cell types. The decreased of regional excretory value in irradiated area was found to be dose-dependent but had no corelation with regional uptakes of DISIDA and phytate. The decreased of regional excretory value observed in non-irradiated region suggested that irradiated liver might induce an indirect effect.

• Journal of Korean Biological Nursing Science
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• v.13 no.3
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• pp.298-306
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• 2011

Purpose: To analyze the differences of the Body Mass Index (BMI), blood biochemical indices (TC, TG, HDL, PP2) among college faculty members depending on their life styles and thereupon, provide for some basic data useful for healthcare education. Methods: 163 faculty members were sampled for a questionnaire survey and a medical checkup, both conducted from Jan. 20 to Jan. 26, 2010. Results: First, such blood biochemical indicesas BMI, TG, HDL and PP2 differed significantly depending on gender, while TC, TG and HDL differed significantly depending on age. Second, BMI differed significantly depending on drinking. Third, smokers showed significantly lower BMI and PP2 than non-smokers. Among the smokers, those smoking for 1-10 years showed a significantly lower level of TG. Fourth, those exercising as hard as sweating 3 times a week showed significantly lower BMI, TC and TG. Fifth, BMI was correlated positively with TC and TG, while being correlated negatively with HDL. On the other hand, TC was correlated positively with the TG which was correlated negatively with the HDL which was correlated positively with PP2. Conclusion: In order to prevent chronic diseases and live a healthy life, it must be necessary to control drinking, stop smoking and exercise regularly.

• Asian Pacific Journal of Cancer Prevention
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• v.15 no.4
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• pp.1527-1530
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• 2014

Background: Time to colposcopy (TC) after abnormal Pap smears was evaluated for influence on cytohistologic correlation (CHC). Materials and Methods: This retrospective study assessed the correlation between TC and CHC of women who had abnormal Pap smears. Colposcopic chart review included participants from 2010-2013 who attended a colposcopic clinic, Thammasat University Hospital, Thailand. Results: Four hundred and sixty cases who had abnormal Pap smears were recruited. Pap reports were atypical smears with low grade squamous intraepithelial lesion (SIL), high grade SIL and cancer at 339, 114 and 7 cases, respectively. One hundred and twenty four patients underwent loop electrosurgical excision procedure (LEEP). A half of the cases were colposcopically examined within 1-2 months after abnormal Pap collection. CHC was 88 percent and not affected at all by TC. Subjects who attended cervical cancer screening from affiliated health providers had shorter TC than those screened in our tertiary hospital. Conclusions: Time to colposcopy with abnormal Pap smears conducted at Thammasat University Hospital had a highest frequency of 42 days, in line with the literature. Length of TC does not affect the correlation between Pap and histopathologic reports. A longer waiting period for colposcopy did not alter progression or regression of the disease.

• Journal of the Korean Society of Food Science and Nutrition
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• v.25 no.3
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• pp.433-440
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• 1996

To assess the relationship between serum cholesterol level and dietary intake in obese children, 50 subjects were selected as an obese group and 50 subjects as a normal group depending upon body mass index. Fasting blood samples were obtained and analyzed for serum total cholesterol(TC), high density lipoprotein cholesterol(HDLC), low density lipoprotein cholesterol(LDLC) and triglyceride(TG). The dietary intake and information on dietary behavior and family environment were obtained by questionaire using 24 hour dietary recall method for 2-consecutive days. The concentrations of TC, LDLC, HDLC and TG of obese group were estimated to be 193.3mg/dl, 122.5mg/dl, 53.7mg/dl and 86.0mg/dl, respectively. The obese group showed higher TC, LDLC, TG level(p<0.001) and lower HDLC level(p<0.001) than normal group. Food intakes in obese group were similar to those of normal group except meats & fishes(P<0.01), milk & dairy products, fruits(p<0.05), and green & yellow vegetables(p<0.001). Nutrient intakes in obese group exceeded Korean recommended dietary allowance for the corresponding ages. Saturated fatty acid(p<0.05) and cholesterol(p<0.001) intakes in obese group were higher than those of normal group. In correlation analysis, meats & fishes, eggs and milk & dairy products intakes were positively related to serum TC, LDLC and TG ; on the contrary, green & yellow vegetables and fruits intakes were negatively related to serum TC, LDLC and TG ; but positively to HDLC. Obesity index, serum cholesterol level, cholesterol and saturated fatty acid intake were positively correlated with parent's obesity index, frequency of snack per day, eating rate and late snack.

• Korean Journal of Veterinary Service
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• v.20 no.4
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• pp.359-370
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• 1997

This study was carried out to Investigate the biochemical characteristics, antibiotic susceptibility, serogroups and pili producibility test of enterotoxigenic Escherichia coli(ETEC) isolated from piglets with diarrhea in Kangwon province from March to October 1996. 1. Sixty eight E coli strains were isolated from 72 piglets with diarrhea and the biochemical and cultural reaction were compared with the classification criteria of Edwards and Ewing. 2. The serogroups of 26 isolates were classified as 08 : K87 6(8.8%), O20 : K1O1 4(5.9%), O141 : K85 4(5.9%), 09 : K103 : P987 3(4.4%), O45 : K 2(2.9%) 0139 : K82 2(2.9%), O64 : $K^{-}$2(2.9%), O149 : K91 1(1.5%), O157 : K88ac 1(1.5%) and O115 : $K^{-}$1(1.5%), respectively. 3. In antibiotic susceptibility test, the isolates showed high susceptible to Ak, Eno, Na, Gm, Am and Km, whereas resistance to Tc, Sm and Cf. 4. Sixty one strains(89.7%) of 68 I coli Isolates were resistant to one or more drugs. The isolates resistant to 2 and 3 or more drugs were 60.3% and 19.1%, respectively. Amog the 16 multiple resistant patterns, Sm Tc(11.5% ), Cf Sm Tc(11.5% ), Cf Cp Sm Su Tc(9.8% ) and Cf Cp Sm Su Tc(8.2%) patterns were frequently observed. 5. MRHA of guinea pig erythrocytes was detected in 9 out of 26 OK serotype and 9 out of 42 unidentified serotypes. MRHA titers of serotypes showed from 16 to 32 in O141 : K85 and no titers in O139 : K82. 6. By the GM1 ganglioside ELISA, $\beta$-, $\alpha$-, and $\gamma$-hemolysin producing strains was detected as 36, 6, and 5 from heat labile enterotoxin(LT) of 47 ETEC, respectively. The distribution of LT toxin from 112 isolates was showed $\beta$- hemolysin, 2 isolates $\alpha$-hemolysin and 3 isolates $\gamma$-hemol-ysin from 26 OK serotypes.

• The Korean Journal of Food & Health Convergence
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• v.4 no.4
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• pp.1-9
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• 2018

To determine the effect of Vitex doniana (leaves stem and root bark) ethanolic extracts on lipid profiles of Poloxamer 407 (P407) induced hyperlipidemic and normal rats. Fifty four mixed sex rats weighing 100-200g were divided into nine groups comprising six animals per group. At the end of the 21 day, the animals were sacrificed and blood sample were collected for determination of serum levels of: Total cholesterol (TC), Triacylglycerides (TAG), High-density lipoprotein cholesterol (HDL-c) and Low-density lipoprotein cholesterol (LDL-c). The studies showed that all induced treated groups significantly (P<0.05) lower serum levels of TC, TAG, LDL-c and significantly (P<0.05) increased HDL-c when compared to the P407 induced hyperlipidemic control. The normal treated groups showed no significant (P>0.05) difference in the serum levels of TC, TAG, LDL and HDL when compared to the normal control group. Calculation of atherogenic risk predictor indices of the induced treated groups showed that all the extracts significantly (P<0.05) lowered the LDL-c/HDL-c, log (TAG/HDL-c) and significantly (P<0.05) increased HDL-c/TC ratio when compared to the P407 induced hyperlipidemic control group. The atherogenic risk predictor indices of normal treated groups showed no significant difference (P>0.05) in LDL-c/HDL-c, Log (TAG/HDL-c) and HDL-c/TC ratio when compared to the normal control group. The study demonstrates the phytotherapeutic effect of Vitex doniana (leaves, stem and root bark) ethanolic extract in poloxamer 407 induced hyperlipidemia.