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朴恒均,崔光洙,張仁浩 慶北大學校 1982 論文集 Vol.34 No.-
Survey on milk consumption of Daegu citizen was carried to get information for the increasing milk demand in Korea. Eighty percent of the families was found to consume milk, and 87.0 percent of the milk-drinking families stored the milk in a refrigerator. Reason of milk-drinking was appeared to be 44.0 percent for health, 39.0 percent for children's nutritional source and 14.2 percent for children's favor. The reason why the milk is not consumed was found to be 24 percent for high price of milk, 24.6 percent for yoghurt or egg consumption instead of milk and 16.2 percent for undesirable flavor of milk. The desirable milk pack was found to be 60.7 percent for cartoon pack, 29.2 percent for bottle and 10.1 percent for poly pack.
해수에서 분리한 Vibrio sp. M-96 균주의 열감수성 alkaline phosphatase 성질
박문경,진덕희,김중균,공인수,김광현,홍용기 동의대학교 기초과학연구소 1997 基礎科學硏究論文集 Vol.7 No.1
A thermolabile alkaline phosphatase has been purified through steps of osmotic shock, ammonium sulfate salting-out, and DEAE-cellulose chromatography from the cultured broth of the marine Vibrio sp. M-96 strain. The optimal temperature for the enzyme activity was 35℃. The optimal pH was pH 11.0, and the range of pH stability was pH 10.4 to 12.0. Thermal inactivation occured within 6 minutes at 60℃. The enzyme was considerably inactivated by 0.1mM concentrations of Hg^2+, Ni^2+ and Zn^2+, whereas activated up to 234% by 1mM of Mn^2+. The activation energy and deactivation energy by the Arrhenius equation were 4.02 Kcal/mol and 9.09 Kcal/mol, respectively. The Km and Vmax values of the enzyme for p-nitrophenylphosphate were found to be 0.0465mM and 0.001335mM/min. respectively. Active from of the enzyme had a molecular weight of 57,000 dalton determined by the Sephadex G-200 gel filtration method.
GPS 측위법을 이용한 차량추종자료 측위방법간 정확성 비교
김도균,이종달,김성훈,정광수,박관 嶺南大學校 工業技術硏究所 2003 工業技術硏究所論文集 Vol.31 No.2
The purpose of this study is to examine GPS data accuracy on traffic behavior analysis and to investigate GPS measurement in the real road condition. This measurement uses GPS hardware and software for collecting speed and position of two model cars at the same time. Data of Disto meter and GPS data which are bases of GPS data value are compared for judging through t-testing and correlation analysis. GPS data is used for calculating car moving distance and speed change. It is useful to traffic control in a city by analyzing basic traffic behavior appeared on leading car and following car.
태아와 성인의 배양된 섬유아세포의 교원질 합성양상의 비교
나동균,노태석,박병윤,이광훈 大韓成形外科學會 1999 Archives of Plastic Surgery Vol.26 No.3
With the development of antenatal diagnostic tools such as ultrasonography, some congenital anomalies or diseases can be detected in early fetal life. Routine serial antenatal check-ups have made it possible to predict the prognosis of these problems, and a few life-threatening single anatomic malformations have been treated by open fetal surgery. The experience of fetal surgery revealed that the human fetus appears to heal without any scarring. In contrast to adult animals, the response to tissue injury in the fetus is conspiciously devoid of acute inflammation. Indeed, the absence of neutrophils is perhaps the most consistent observation in fetal wounds and seems to be followed by absent or scanty fibroblast infiltration, which results in healing with sparse and well organized collagen deposition. Actually, the amount and quality of the collagen deposition were decided by the fibroblasts which infiltrated the wound. It is well known that fetal wounds have sparse collagen deposition, however, the mechanisms are still unclear. This study was designed to evaluate the role of fibroblast activity in the differences of the scar formation between the fetus and neonate. Fibroblast activity such as the cell growth rate, the amount of collagen synthesis and the synthesized collagen types of fetus(IUP 18-22 weeks) was compared with that of neonate. The amount of collagen synthesis was measured by H-proline uptake and the amount of collagen type Ⅲ was measured by Western blot using antihuman procollagen typeⅢ. The cell growth rate as determined by cell proliferation from the initial cell count of 5x10? to cell confluence was 3.6 x 10 in the fetal fibroblasts compared to 2.5x10? in neonatal fibroblasts. Fetal fibroblast synthesize 16.9 x 10⁴ cpm of collagen and neonatal fibroblasts synthesize 2.7 x 10⁴ cpm of collagen. The synthesized amount of type Ⅲ collagen was 2.1x10⁴ ug/ml, and 1.5x10⁴ ug/ml by fetal and neonatal fibroblasts, respectively. In conclusion, fetal fibroblasts grow faster and synthesize a smaller amount of collagen, but produce more type Ⅲ collagen than neonatal fibroblasts.
신영균,이영준,박찬원,신형재,안광희 江原大學校 産業技術硏究所 1998 産業技術硏究 Vol.18 No.-
A high speed and stable A/D conversion data process is required to weigh a mass on moving conveyer weighing platter. The paper presents a new method to obtain stable and fast automatic weighing A/D conversion data process. Dynamic weighting system which is constructed with dual load cell is realized by the stable A/D conversion data preocess algorithm using DSP. The proposed memthod is applied to the real design, and that experimental results showed good performances of the weighing stability.
김경남,박광균,이자현,김광만 대한치과기재학회 1998 대한치과재료학회지 Vol.25 No.1
It is known that mutagenic effects can be related to various serious diseases, including cancer and birth defects. Therefore, detailed attention must be given to methodologies for evaluation of mutagenicity of dental materials, so that safe use of the products is ensured. The aims of this study were investigated the potential mutagenicity of compounds from 9 commercial dentin bonding agents (including primers and adhesives) using the Ames Salmonella typhimurium/microsome assays. Through this tests, Tenure S Bond Enhancer was showed mutagenecity and Tenure and Prima less in Salmonella typhimurium TA100 without metabolic activation. Hipolite Dentine was showed slight and Veridonfil-Photo, Prima and Tokuso Mac-Bond less in Salmonella typhimurium TA100 with metabolic activation. From this study, it was needed to further study with other kind of mutagenic tests.
흰쥐에서 음경발기 평가의 척도로서 음경해면체내압측정술 확립
송윤섭,김용준,이광우,김준모,문기혁,박영호,민영기,유형균,김형건 순천향의학연구소 2001 Journal of Soonchunhyang Medical Science Vol.7 No.1
Purpose: Because studies about the control of penile erection at the entral nervous system was dependent on the animal experiments, establishment of measuring penile erection is important to evaluate the effects changes at the central nervous system on the penile erection. Intracavernous pressure measurement in rats has been introduced as a suitable index for the evaluation of penile erection but this method is invasive and technically difficult. So, we established the intracavernous pressure measurement in rats as the experimental index for penile erection. Materials and Methods: 42 male adult Sprague-Dawley rats (250-300gm) were divided to saline or papaverine treated group. Rats were placed on a heating table to maintain their body temparature and anesthetized with 50mg/kg of pentobarbital sodium by intraperitoneal injection. A cannula was inserted to the left carotid artery to measure systemic blood pressure. Saline (0.05, 0.1ml), papaverine(0.05, 0.1, 0.25, 0.5, 1.0, 2.0mg) were injected intracavernously via 26 guage needle filled with saline or papaverine which connected to pressure transducer and polygraph was inserted into the corpus cavernosum on one side to inject the drug and to measure intracavernous presure. Results: Properly executed insertion and intracavernous administration produced a instantaneous but transient rise in intracavernous pressure that substantially stabilized and maintained at 5.4±0.4mmHg. Intracavernous pressure and duration of penile blood flow following intracavernous injection of papaverine are increased comared to those of saline. Conclusions: Monitoring intracavernous pressure in rats represents a suitable index for the evaluation of penile erection in small laboratory animals.