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Oyijangachies, a traditional Korean brined cucumber liked cucumber pickle, were prepared brining cucumber into mayonnaise instead of traditional dipping sources(Kochujang, doenjang and ganjang). Cucumbers have been dipped in different NaCl solutions for 48 hrs. After dipping, brined cucumbers have been aged in mayonnaise for 30 days. The acidity, pH, salt content and firmness changes were measured among the cucumber which were treated by different solutions during aging. The acidity of mayonnaise cucumber pickle increase during aging respectively. The acidity and pH of the pickle dipped in 6% NaCl solution were 1.00~1.81 and 4.05~3.83, but that of the pickle in 25mM-CaCl_2 12% NaCl solution were 1.92~2.98 and 3.19~3.03 after 30 days aging. The pickle firmness of cucumber blossom end was increased after 30 days aging.
This studies were performed to develop a Korean traditional folk liquor namely Gangha-ju has been prepared at Bosung district in Korea, and manufacturing conditions and anti-oxidation activity and antimicrobial activity of Gangha-ju were investigated. Ethyl-alcohol 20% and 30% Gangha-ju were brewed with glutinous rice wine, distilled liquor and 6 herbs of ginger, cinnamon, etc. Chemical and physical properties of 30% Gangha-ju were acidity 0.22, pH 4.31, amino acidity 3.26, transmittance 59 and conductivity 911 ㎲/m, and 20% Gangha-ju were 0.43, 4.20, 6.26, 62 and 924㎲/m. Volatile flavor compounds of ethyl alcohol, acetic acid, butanol, n-amyl alcohol, iso-pentyl alcohol, ethyl acetate, butyl acetate, acetaldehyde and furfural were detected, and main aroma compounds of Gangha-ju were isopentyl alcohol and ethyl acetate. Anti-oxidation activity by DPPH method was evaluated 31.32%, and nitrite scavenging effect was 31.7%. Anti-microbial activity against several microorganisms was pronounced strong activity over a wide range of test organisms, and Leuconostoc mesenteroids and Salmonella Ttyphimurium, Staphylococcus epidermidis were found to be more sensitive to Gangha-ju than Eschericha coli and Aspergillus flavus.
Li was a sweet beverage containing 2-3 percents ethyl alcohol made from malt by spontaneous fermentation from ancient custom to fifteenth century. Li was changed to the rice wine being a sweet beverage of low alcohol content using nuruk as starter and the sikhae which is non-alcoholic fermented beverage. Li was made for drinking and ceremony in Korea, China and Japan. It disappeared from the beverage items along with its method of manufacture from malt, but in Korean had made Li using nuruk until recent. We made Li according to Book of Imwon-Keongjae Ji (The book of country economy) methods for reappearance of Li. Fermentation characteristics for the production of Li with Saccharomyces cerevisiae, Saccharomyces bayanus and Saccharomyces sake were investigated. Among the yeast strains tested, Li fermented with S. sake showed higher alcohol production. Total sugar decreased considerably during the whole period of fermentation(30 hours), while ethyl alcohol content increased at 2.9∼83.52%. As the fermentation progressed, the pH decreased until the 30 hours of fermentation, while total acid increased during the same period. In fermentation of 36 hours, Li consisted of about 2.98∼3.52% of alcohol content, 5.3∼6.0% of total sugar, 1.45∼2.21㎎% of reducing sugar and total acidity were reached up to 24.4∼29.5㎎% for Li manufactured with S. cerevisiea sake, S. bayanus and S. sake.
연구계획 : 척추골절의 치료를 위한 내고정시 사용되는 장분절 고정과 단분절 고정의 임상적 결과 및 차이점을 알아보고자 후향적 연구를 계획하였다. 연구목적 : 장분절 고정술과 단분절 고정술 사이에 역학적 견고성과 골절의 정복력, 신경학적 회복 정도와 임상적 결과를 비교, 분석하고자 하였다. 대상 및 방법 : 1989년부터 1997년까지 척추의 외상 환자중 후방도달법에 의한 척추경나사못 고정술을 시행한 54명 을 대상으로 장분절 고정군과 단분절 고정군으로 구분하였고 단분절 고정술의 경우 골절된 추체에도 척추경 나사 못을 삽입하였다. 단분절 고정군은 35례로 평균 1년 8개월 추시하였고 장분절 고정군은 19례였으며 평균 2년 7개월까지 추시하였다. 결과는 단순 방사선사진에서 전방추체 높이의 변화, sagittal index, 및 신경학적 회복정도를 비교하여 평가하였다. 결과 : 장분절 고정군에서 전방추체 높이는 술전 50.7%, 술후 78.7%, 최종 추시상 74.9 %이었고, 단분절 고정군에서 는 각각 59.7%, 79.3%, 및 77.7 %로 통계학적 차이가 없었다. Sagittal index는 장분절 고정군에서 술전 17.5。, 술후 6.7。, 최종 추시상 8。였으며 단분절 고정군은 19.9。, 10.4。, 및 12.1。로 차이가 없었다. 다른 임상결과도 양군간의 차이 는 없었다. 신경증상이 발생한 36례중 22례에서 Frankel분류에서 1등급 이상의 회복이 있었다. 결론 : 흉요추 및 요추 골절의 수술적 치료시, 골절된 추체를 포함하여 상하위 1추체씩 고정하는 추경나사못 사용 단분절 고정술이 권장할 만한 수술방법으로 사료된다. Study design : A retrospective study was designed to evaluate the clinical result and difference between short segment and long segment fixation, which was undertaken by posterior approach for thoracic and lumbar spine fractures. Objective : To determine and compare the mechanical maintenance and ability of correction, and clinical and neurologic recovery between short segment and long segment fusion group. Summary of Background Data : The long segment instrumentation is a cause of decrease of motion segment in thoracic and lumbar spine. In short segment fusion, screw failures were reported. Materials and Methods : From 1989 thorough 1997, 54 patients who had been operated on by the posterior approach with transpedicular screw fixation for spine injuries were divided into two groups. The authors applied the short segment transpedicular instrumentation including fractured vertebra. Short segment group included 35 cases, and long segment group, 19 cases. The mean follow-up period was one year and eight months for short segment group, two years and seven months for long segment one. The results were evaluated by comparing the anterior vertebral height, sagittal index in simple roentgenogram and neurologic recovery. Results : The average of anterior vertebral height which was 50.7% at preoperation, became 78.7% after the operation and measured 74.9% at final follow-up in long segment fusion group, while in short segment fusion group it was 59.7%, 79.3% and 77.7%, respectively. The average of sagittal index of 17.5°at preoperation became 6.7°after the operation, and measured 8。 at final follow-up in long segment fusion group, while in short segment fusion group it was 19.9。, 10.4。, and 12.1。, respectively. Overall clinical results had no statistical significant difference between two groups. Of the thirty-six patients with neurologic deficits, twentytwo improved by over the one Frankel grade. Conclusions : The authors conclude that the short segment transpedicular instrumentation including fractured vertebra is a successful method of thoracolumbar and lumbar burst fractures.
Unlike the conventional slurry type wire sawing, the diamond wire sawing method adopts diamond plated wire as sawing media instead of slurry consisted of both silicon carbide and oil. Wafering with diamond plated wire leaves solid element of the sludge mostly made up of silicon, and it is not difficult to recover 95% or more of silicon by a simple separation process of oil from the sludge. In this study, silicon was recovered from the sludge by drying process and organic and metal impurities were removed by sintering process. As result 3N grade silica was obtained successfully by thermal processing utilized the fact that the recovered silicon readily combines with oxygen due to fine particle size. 다이아몬드 입자를 전착한 와이어를 사용하여 실리콘 잉곳을 슬라이싱 하는 방식은 기존의 슬러리를 사용하는 방식과 달리 절단매체인 실리콘카바이드를 사용하지 않기 때문에 웨이퍼링 후에 발생하는 슬러지에 함유되어 있는 고형분의 대부분은 잉곳으로부터 분리되어 나온 실리콘 성분으로 구성되어 있다. 따라서 슬러지에 함유되어 있는 액상성분만 제거하여도 어렵지 않게 90% 이상의 순도를 가지는 실리콘을 회수할 수 있는 이점이 있다. 본 연구에서 다이아몬드 와이어 쏘잉 방식에서 배출된 슬러지로부터 오일 성분을 제거하여 고품위 실리콘 분말을 회수하였으며, 성형 및 소결공정을 통하여 실리콘에 포함되어 있는 유기물을 포함한 금속불순물을 제거하고, 미분체 실리콘의 산화가 용이한 점을 활용하여 열산화 공정으로 3N급 순도의 실리카를 제조하였다.