제산제를 이용한 자두와인의 감산처리

강병태 ; 김순희 ; 윤옥현 김천대학교 2006 김천대학교 논문집 Vol.27 No.-

To decrease the acid quantity of the plum wine, we have treated the plum wine aged 3 months with calcium carbonate and potassium bicarbonat as antacids. Total acid contents of plum wine was drastically reduced and the pH was increased, rel-atively to concentrations, in the calcium carbonate treated group. But there was not consistent with results in the potassium bicarbonate treated group. However, Both of antacids did not affect the contents of total phenolics. Color changes were mon-itored by the CIELAB space, using the D65 illuminent and 10° observer. Redness (a) was significantly decreased in the plum wine treated with antacids. The chroma(C) and hue (H) parameters was also changed as a result of the dis-coloring process since they are combinations of the a and b parameters.

Modal SI 기법 적용을 위한 최적 측정위치 선택

강태우,권순정,김용현,신수봉 東亞大學校 建設技術硏究所 2001 硏究論文集 Vol.25 No.2

In applying a modal system identification with a limited number of measuring degrees of freedom, the selection of optimal sensor locations (OSL) is critical for a good identification. The current research proposes a new OSL method applicable to a modal system identification (SI) and compares it with a widely used OSL method. The proposed method utilizes the sensitivity of eigenvectors with respect to the structural parameters. A simulation study for a tower structure has been carried out to demonstrate the efficiency of the proposed method. Through the simulation study, the influence of OSL on the structural parameters estimated by a S1 method are investigated.

피자두즙으로 제조한 자두 초콜릿의 품질적 특징

강병태, 나성주, 김순희 김천대학교 2012 김천대학교 논문집 Vol.33 No.-

The juice powder of Prunus salicina L. var Soldam was prepared by freeze-dry method as yield ratio of 15%. The juice powder contained the soluble solid of 11.8" brix and total acid of 0.47%. The color of L and a values were 82.26 and 53.23, respectively and the contents of total polyphenolics was 1,280 GAE mg/kg. The plum powder was added to white chocolate at weight percentage of 4.5%. The strength and hardness of the plum chocolate were higher than those of control commercial chocolate but the textures of its were lower than those of control. The stability of plum chocolate to temperature and light were studied. The evaluation of the color, rancidity, visual appearance were analyzed. A values were lowering but b values were rising with the rise of temperature. The light of fluorescent lamp was lowering both of a and b values. The rancidity of plum chocolate was the highest at 30C and the sunlight made it more higher than the fluorescent lamp. The plum chocolate was softened at temperature above 30C but it was not influenced by lights. Also, the sensory evaluation of plum chocolate according to composition of plum powder were determined. Adding 11g of plum powder to 100g of white chocolate was made the best good result at color, taste, texture and preference,

치아 석회화 단계와 골 성숙도 단계간의 상관관계에 대한 연구

강동균,김태완,김영진,남순현,김현정 大韓小兒齒科學會 2008 大韓小兒齒科學會誌 Vol.35 No.2

본 연구는 성장 중인 부정교합 환자의 진단이나 치료계획의 수립,치료방법 및 시기,예후 등을 결정하는데 중요한 판단 지침이 되는 치아 석회화 단계와 경추 및 수완부골 성숙도간의 연관성을 규명하여 개인의 보다 정확하고 효율적인 사춘기 성장 정도를 평가하기 위해 시행하였다. 전신 질환이 없고 교정 치료 경험이 없는 7-16세의 여아 154명,남아 179 명,총 333명의 파노라마 방사선사진,측모 두부규격 방사선사진,수완부 방사선사진을 분석하여 평가하였다. 연구 결과,파노라마 방사선사진의 치아 석회화 단계를 통하여 사춘기 성장 정도를 평가하는 것은 부정교합 환자의 진단 및 치료계획을 수립하는데 임상적으로 유용한 정보를 제공할 것으로 판단되었다. The purpose of this study was to investigate the relationship between the stages of calcification of various teeth and skeletal maturity stages among Korean individuals. The study subjects consisted 154 female and 179 male ranging from 7 years to 16 years of age. A total of 333 hand-wrist, cephalo-lateral and panoramic radiographs were obtained and analyzed. The tooth development of the mandibular canines, first, second premolars, and second molars were assessed according to the Dermijian' s system. Skeletal maturity stages were determined from hand-wrist radiographs by using the SMI system and cephalo-lateral radiographs by using the CVMS, respectively. The results were as follows 1. The mean ages of each stage of skeletal maturity were consistently younger in female subjects. 2. There was a high correlation between skeletal maturity of hand-wrist and cervical vertebrae in the both sexes. 3. There was a high correlation between skeletal maturity and dental calcification stage of mandibular canines, first premolar, second premolars, and second molar. 4. The mandibular second molar was tooth showing the highest correlation. 5. Percent distributions of the relationship between calcification stages of individual teeth and stages of skeletal maturity were obtained in both sexes. In summary, this suggests that tooth calcification stages from panoramic radiographs might be clinically useful as a maturity indicator of the pubertal growth period.

병원 및 주위환경의 공기중에서 분리된 포도구균의 분포와 항균제 감수성에 관한 연구

태석,이강순 순천향대학교 1990 논문집 Vol.13 No.1

The study was performed to detect the route of hospital infection by isolating Staphylococcus from the air in the hospital and its neighborhood with the method of settling plate culture and by testing their susceptibility to 7 drugs. 1. Among a total of 672 colonies collected from various areas, 422(62.8%) strains of staphylococcus were obtained. 2. Of 422 strains of Staphyolcoccus, 21(5.0%) strains were coagulase-positive and 401(95.0%) strains were coagulase negative. Among coagulase-positive strains, 11 strains were isolated from the hospital whereas 10 strains were isolated from the neighborhood. On the other hand, Among coagulase negative strains, 349 strains were isolated from the hospital, whereas 52 strains were isolated from the neighborhood. 3. All the 21 coagulase positive strains isolated from the air in the hospital and its neighborhood showed positive reaction to mannitol, DNAase and β-hemolysis. 4. Most of coagulase positive strains were resist to penicillin but sensitive to sulfamethoxazole-trimethoprim. 5. Among coagulase negative strains, 327(81.6%) strains were resist to penicillin, but, there was no significant difference in the resistant rate to penicillin between the hospital and its neighborhood. 6. The above result suggest that Staphylococcus is the major causative organism of hospital infection and highly resistant to most of the antibiotics. These Staphlococci are brought from the out side of the hospital by many visitors, that is the important route of hospital infection by staphylococcus.

유치의 치근단 병소에 의해 변위된 영구치의 자발적 맹출

강동균,양승덕,김태완,김현정,김영진,남순현 대한소아치과학회 2007 大韓小兒齒科學會誌 Vol.34 No.2

The infection of primary teeth occurs by caries or trauma. But, if it is not treated on time, the complication may occur such as enamel hypoplasia, discoloration, impaction, displacement and dilaceration of permanent successors. The periapical lesion on primary tooth could displace the permanent successors in any direction. Treatment options of displaced tooth are observation after extracting the primary teeth, surgical exposure, orthodontic traction, transplantation and extraction. In these cases, displacement of permanent central incisor caused by the periapical lesion of primary teeth was observed. The spontaneous eruption after extraction of primary teeth was expected considering degree of displacement, development of root and direction of eruption. This case report shows spontaneous eruption of displaced permanent tooth germ was achieved with periodic examination after extraction of primary teeth.

카바이트 처리에 따른 떫은감 '도근조생'의 과실 연화 및 품질

배강순,김호철,김태춘 원광대학교 2003 論文集 Vol.31 No.-

This study was carried out to investigate the effect of calcium carbide on fruit softening and quality of 'Tonewase' persimmon. The fruit weight was 200±4.4g at optimal maturity, and the soluble solids was 13.6±0.7˚ Bx. The fruit peel chromaticity was L^(*)=65.1, a^(*)=25.2, and b^(*)=63.4, and it showed yellow. The fruit peel chromaticity in ethanol and CO_(2) treatments was not changed. The b^(*) value in calcium carbide treatment was low as 26.8 and the fruit peel chromaticity changed red. Fruit softening in 0.1% and over of calcium carbide treatments was properly progressed. The bitterness following fruit softeness occurred in the fruits treated with 0.2% and over of calcium carbide. But the fruits treated with 0.6% and over of calcium carbide was not suitable to eat because of bitterness. The bitterness of fruits treated with 1.0% calcium carbide was decomposed to eat after 3days storage at room temperature.

에틸기로 치환된 Chrysene의 합성

金順泰,강석 홍익대학교 산업기술연구소 2001 産業技術 Vol.11 No.-

To obtain natural color in the organic electroluminescent device (OELD), more or less similar intensity, in other words, similar efficiency must be achieved in red, green, and blue color. However, the efficiency of red and blue color is still inferior to the one of green. Furthermore pure color in each components is necessary: red about 650 nm, green about 530 nm, and blue bout 430 nm. In order to get pure blue fluorescent material, a derivative of tetrahydrochrysene (THC) was systhesized, in which the substituent was chosen to prevent self-quenching and thus improve photoluminescent efficiency. Ethyl-substituted THC is obtained as a mixture of both cis- and trans-forms, among which only the latter is fluorescent. The emission is at 400 nm of almost violet color, lower than that of THC.

포기/비포기 시간비가 활성슬러지 floc의 특성에 미치는 영향

김강호,문병현,이택순,서규태 7개 국립대학교 환경연구 논문집 공동발행 위원회 2002 환경연구논문집 Vol.2 No.1

Many researches on SBR(Sequencing batch Biological Reactor) for the removal efficiency of contaminants and effects of operation mode in effluent have been conducted. However, little studies for the characteristic of biological floc affected by operation mode have been made. The purpose of this study is to compare the effect factors on the removal efficiency of nitrogen and phosphorus in SBR system. And also it is to look for new information on the size and characteristics of biological floc by changed aerobic/anaerobic time ratio. Results shown that the removal efficiency of organic matter, nitrogen and phosphorus was higher in the operation mode of higher aerobic/anaerobic time ratio. The floc size and fractal dimension produced in higher aerobic/anaerobic time ratio were larger. These result implied that the settling characteristics of floc could be produces in the operation mode of higher aerobic/anaerobic time ratio.

열탈착 분석법에 의한 Pt(111) 표면위의 NO와 CO의 흡착

이순보,박종윤,곽현태,부진효,강용철 성균관대학교 1992 論文集 Vol.42 No.2

The adsorptions of nitric oxide and carbon monoxide on Pt(111) surfaces have been studied by using LEED, AES, and TDS(Thermal Desorption spectroscopy). The adsorbed species of NO is predominantly molecular on the Pt(111) surface at room temperature. A main desorption peak of TDS is attributed to the molecular adsorption at 360K. With increasing No exposures, a shoulder peak at 480K which may be attributed to the defect site adsorption is appeared. The desorption rate order for No desorption is 1st order and the desorption energy for NO calculated by Redhead equation assuming pre-exponential factor v_1=10^13 sec^-1 is 21.7Kcal/mol. The adsorption of carbon monoxide is also molecular on Pt(111) surface at room temperature. The TDS results showed only a single broad peak at 460K, which is attributed to molecular adsorption. The desorption order for CO desorption is 1st order as well as NO and the desorption energy for CO is 28Kcal/mol.