• 한국식품과학회지
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• 제20권1호
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• pp.6-12
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• 1988

포장방법이 고등어 fillet계품의 저장성에 미치는 영향을 알아보기 위하여 시료를 무염 및 염장처리한 후 $CO_2$ gas치환포장, 진공포장 및 대조구로 하여 $0^{\circ}C$ 및 $5^{\circ}C$에 저장하면서 실험한 결과는 다음과 같았다. 염장 고등어 fillet의 제조의 경우, 시료 육에 침투한 적정 염농도를 4%내외로 하였을 때 적정 식염수의 농도는 15%였고 염장기간은 24시간 내외였다. 무염 및 염장 고등어 fillet의 VBN, TMA, 생균수, Histamine은 저장기간이 길어짐에 따라 증가 하였으나 TBA값은 저장 $4{\sim}9$일 경에 최고값에 달한 후 곧 감소하는 경향이었다. 고등어 fillet의 품질 유효 지표성분은 VBN이였고 그 함량의 상한선은 25mg%였다. 온도별, 포장별 간이 품질 평가방법을 도출하였다. $0^{\circ}C$에 저장한 무염처리 고등어 fillet의 $CO_2$ gas 치환포장, 진공포장 및 대조구의 경우, 저장 가능기간은 25, 22및 16일 이었으며, $5^{\circ}C$의 경우는 19, 14및 12일 이었다. 또한 염장한 고등어 fillet을 $5^{\circ}C$에 저장할 경우는 각각 29, 27 및 18일 이었다.

• 상하수도학회지
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• 제24권2호
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• pp.195-202
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• 2010

The evaluation of organic matters and nutrients removal was investigated for the synthetic wastewater and the high strength of dairy wastewater. Two different systems were performed for this research. System A composing of a single RBC with tapered aeration was fed with the synthetic wastewater for 74 days with 173L/day of influent, 200% of internal return and 100% of sludge return for the period 1 and 2. The feed conditions were maintained 346L/day of influent, 50% of internal return and sludge return for the period 3. The dairy wastewater was introduced to evaluate treatment efficiency for system B composing of dual RBCs and tapered aeration tanks for 50 days of experimental run time, in which hydraulic rates were maintained at the constant ratios of 346L/day, 50% of internal return and 50% of sludge return. The spiral string media made of nylon fibre was attached by Bacillus sp. in RBC for both systems. The specific area of string media was $1.4m^2$/m and biomass was maintained at the concentrations of 23g/m. The synthetic wastewater was supplied by 1,800mg/L of glucose, 500mg/L of $NH_4Cl$, and 500mg/L of $KH_2PO_4$ to system A. The dairy wastewater was supplied to system B from dairy production plant. The average influent concentrations were 1,334mg/L of BOD, 2,014mg/L of CODcr, 160mg/L of T-N, and 12mg/L of T-P in system A. The average influent concentrations of parameters were 1,006 mg/L for BOD, 1,875mg/L for $COD_{cr}$, 51.6mg/L for T-N and 8.9mg/L for T-P in system B. Results indicated that removal efficiencies of BOD and $COD_{cr}$ were more than 90% however, the removal efficiency of T-N was 87%, and that of T-P was 82% for system A. Removal efficiencies were 98.5% of BOD, 91.3% of nitrogen and 89% of phosphorus for system B. The removal efficiencies of organic matters, T-N and T-P were higher in system B than in system A. The effluent quality issued by the stringent national legislations for the discharge of the high strength of dairy products wastewater can be improved using sequential RBCsand tapered aeration reactors rather than a single RBC and tapered aeration reactors with Bacillus sp.

• 한국응용약물학회:학술대회논문집
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• 한국응용약물학회 1997년도 춘계학술대회
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• pp.103-103
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• 1997

일시적인 국소 뇌허혈 rat model에서 중대뇌동맥의 폐쇄시간에 따른 뇌조직의 손상정도를 비교 조사하였다. 웅성 Wistar rats를 isoflurane 홉입마취하에서 우측 내경동맥내로 17 mm의 silicone-coated 4-0 nylon monofilament를 삽입하여, 중대뇌동맥의 기저부를 30분, 60분 또는 90분동안 폐쇄한 후 이 monofilament를 다시 밖으로 뽑아내므로써 23 시간동안 recirculation 시키는 일시적 국소 뇌허혈 rat model을 사용한 결과, 수술 후 거의 모든 rats에서 left hemiparesis 또는 좌측으로의 circling과 같은 신경학적 결손이 나타나므로써 높은 성공률을 가지고서 비교적 용이하게 뇌허혈을 유발시킬 수 있었으며, 2 mm 두께의 fresh brain coronal slices에 대하여 2,3,5-triphenyltetrazolium chloride (TTC) 염색법을 시행하여 slice surface의 사진을 찍고 computerized 영상분석법을 이용하여 필요한 면적을 측정하므로써, coronal slice의 infarction size (%)는 총 면적에 대한 infarction 면적의 %로서, 부종율 (%)은 대조측 대뇌반구 면적의 2배에 대한 동측 대뇌반구와 대조측 대뇌반구 면적 차이의 %로서 산정되어졌다. 30분 허혈군에서는 본 염색법으로는 infarction이 거의 확인되지 않았으나 60분 허혈군 (n=13)에서는 우측 somatosensory frontoparietal cortex와 striatum 양자 모두 또는 일부 rats에서는 striatum에만 국한된 ulfarction이 확인되어졌으며 90분 허혈군 (n=12)에서는 거의 대부분의 rats에서 위 두 지역 모두에서 infarction이 확인되어졌다. Infarction size (%)는 60분과 90분 허혈군 각각에서, frontal pole로부터 5 mm되는 slice에서는 11.9$\pm$1.2 (평균치$\pm$표준오차), 13.7$\pm$1.9이었으며 7 mm되는 slice에서는 19.1$\pm$1.8, 21.9$\pm$2.1이었으며 9 mm되는 slice에서는 14.7$\pm$2.4, 19.7$\pm$2.2이었다. 또한 부종율 (%)은 60분과 90분 허혈군 각각에서, frontal pole로부터 5 mm되는 slice에서는 3.1$\pm$0.6, 3.8$\pm$0.7이었으며 7 mm되는 slice에서는 3.5$\pm$0.3, 5.7$\pm$1.0이었으며 9 $\pm$되는 slice에서는 3.4$\pm$0.5, 5.7$\pm$0.9이었다. 한편 90분 동안의 중대뇌동맥 폐쇄에 따른 뇌조직 손상을 cresyl violet 염색법, NADPH-diaphorase histochemistry, GFAP immunohistochemistry를 사용하여 일부 측정한 결과, 위의 손상지역에서는 뇌신경세포체들의 shrinkage 내지는 소실됨을 확인할 수 있었으며, NADPH-diaphorase-positive neuron들도 대부분 dendrite와 axon같은 cell process들의 fragmentation, shrinkage 내지는 소실되므로써 intensity의 감소현상이 나타났으며, reactive gliosis로 말미암아 GFAP immunoreactive intensity의 증가현상이 나타났다.

• 수산해양기술연구
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• 제46권4호
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• pp.281-291
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• 2010

To estimate the mesh selectivity of monofilament and multifilament gill net for Marbled sole, Pleuronectes yokohamae, the field testes were carried out 12 times with five different mesh sizes (86.6, 101.0, 121.2, 137.7, 151.5mm) in the western sea of Korea, 2007-2009. The master curve of selectivity was estimated by the extended Kitahara's method. In the field testes, the total number of species and catch were 26 and 987, respectively. The catch number of marbled sole was 728 and occupied 73.8% in total catch. The optimum values of l/m for 1.0 of retention probability in monofilament and multifilament gill net were estimated 0.288 and 0.307, respectively and l/m was estimated to be 0.189, 0.203, 0.213, 0.222 and 0.230 in case of monofilament gill net and 0.171, 0.191, 0.205, 0.216 and 0.227 in case of multifilament gill net when the retention probability were 0.1, 0.2, 0.3, 0.4 and 0.5, respectively. The 0.5 selection range of multifilament gill net was wider about 1.5 times than that of monofilament gill net according as multifilament gill net was 0.216 and monofilament gill net was 0.148. So the multifilament gill net has a low selectivity than that of the monofilament gill net. To estimate the optimum mesh size on first maturity length 19.5cm of marbled sole, the retention probability value of 0.1 was adopted in consideration of using the gill net for marbled sole at present. The optimum mesh size were estimated to be 103.2mm and 114.0mm in monofilament gill net and multifilament gill net, respectively, on first maturity length 19.5cm of marbled sole.

• 한국의류학회지
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• 제28권5호
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• pp.582-590
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• 2004

The purpose of this study was to evaluate thermal properties of Taekwondo wears with three different materials. As a begging step, the questionnaire survey about the actual condition of Taekwondo wears was conducted. With the results of the questionnaire, cotton/nylon(70/30) blended fabric(CN) that was newly woven with sweat absorbent finishing and cotton/spandex(95/5) blended fabric with flexibility property were developed. The same designed 3 Taekwondo wears with 3 different materials which were two different materials(CN and CS) and a current material(cotton/PET, CP) were made. Four young males volunteered for this study, they kicked and punched as Taekwondo action for 20 minutes. Mean skin temperature was the highest in CS(33.1${\pm}$0.8$^{\circ}C$) and the lowest in CP(32.7${\pm}$0.6$^{\circ}C$). Increasing degree of rectal temperature didn't show any significant difference. Clothing microclimate temperature on the thigh was higher in CS(32.8${\pm}$17.4$^{\circ}C$) than in CN(29.4${\pm}$1.1$^{\circ}C$) and CP(29.4${\pm}$1.0$^{\circ}C$). Clothing microclimate temperature on the back and humidity on the thigh didn't show any significant differences. Clothing microclimate humidity on the back was higher in CP(65${\pm}$20%RH) than in CS(61${\pm}$17％RH). Heart rate, total body weight loss, and local sweating were not significantly different by materials. Most subject responded more hot in CN than in others, but there were no significant differences at the subjective sensation of thermal humidity. They answered more comfortable in CN than in others. Tectile sensations were the best in CN and the worst in CS. From those results, first of all, it is necessary to be weighted on Taekwondo wears made of CN in the aspects of the dignity of military arts uniform. Secondly, CS was required to be lighted and enhanced for the subjective sensation. Third, CP weaved honey comb was asked more various design to eliminate sweat high competition power within the scope of the dignity of military arts uniform.

• Restorative Dentistry and Endodontics
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• 제20권2호
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• pp.645-654
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• 1995

Porphyromonas endodontalis is a black-pigmented anaerobic Gram negative rod which is associated with endodontal infections. It has been isolated from infected dental root canals and submucous abscesses of endodontal origin. DNA probe is an available alternative, offering the direct detection of a specific microorganism. Nucleic-acid probes can be off different types: whole different: whole-genomic, cloned or oligonucleotide probes. Wholegenomic probes are the most sensitive because the entire genome is used for possible hybridization sites. However, as genetically similar species of bacteria are likely to be present in specimences, cross-reactions need to be considered. Cloned probes are isolated sequences of DNA that do not show cross-reactivity and are produced in quantity by cloning in a plasmid vector. Cloned probes can approach the sensitivity found with whole-genomic probes while avoiding known cross-reacting species. Porphyromonas endodontalis ATCC 35406 (serotype $O_1K_1$) was selected in this experiment to develop specific cloned DNA probes. EcoR I-digested genomic DNA fragments of P. endodontalis ATCC 35406 were cloned into pUC18 plasmid vector. From the E. coli transformed with the recombinant plasmid 4 clones were selected to be tested as specific DNA probes. Restriction-digested whole-genomic DNAs prepared from P. gingivalis 38(serotype a), W50(serotype b), A7A1-28(serotype C), P. intermedia 9336(serotype b), G8-9K-3(serotype C), P. endodontalis ATCC 35406(serotype $O_1K_1$), A. a Y4(serotype b), 75(serotype a), 67(serotype c), were each seperated on agarose gel electrophoresis, blotted on nylon membranes, and were hybridized with digoxigenin-dUTP labeled probe. The results were as follows: 1. Three clones of 1.6kb(probe e), 1.6kb(probe f), and 0.9kb(probe h) in size, were obtained. These clones were identified to be a part of the genomic DNA of P. endodontalis ATCC 35406 judging from their specific hybridization to the genomic DNA fragments of their own size on Southern blot. 2. The clones of 4.9kb(probe i) was identified to be a part of the genomic DNA of P. endodontalis ATCC 35406. but not to specific for itself. It was hybridized to P. gingivalis A7A1-28, P. intermedia G89K-3.

• 한국융합학회논문지
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• 제13권4호
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• pp.331-337
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• 2022

전기자동차용 배터리 하우징 소재로 사용되고 있는 금속 소재에서 경량소재로 대체하기 위한 열가소성복합재료를 제조하였다. 매트릭스 소재는 고분자 소재인 나일론 6를 사용 하였으며 방열 성능을 부여하기 위해 열전도도가 높은 Boron Nitrate(BN)를 사용하였다. 동일한 필러의 함량 및 입자 크기에 따른 열전도성 고분자 복합재료의 방열 특성을 분석하였다. 필러의 함량이 증가할수록 열전도도 값이 증가하였으며, 입자크기가 60~70㎛인 BN의 함량이 50%인 복합재료의 경우 1.4W/mK 이상 열전도도를 나타내었다. 입자 크기가 클수록 입자 간 계면 접촉면이 넓어져 Thermal path가 이루어짐을 확인하였다. 제조된 열전도성 고분자복합재료를 이용하여 배터리 하우징을 제작하였으며 셀의 충방전 동안 온도 변화를 관찰하여 배터리 하우징의 대체 소재로서의 가능성을 확인하였다.

• Animal Bioscience
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• 제35권2호
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• pp.217-223
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• 2022

Objective: The aim of this study was to determine the effects of feeding starch sugar byproducts (SSBs) on in situ disappearance rate, performance, and carcass characteristics of Hanwoo steers in the late finishing stage. Methods: To determine the in situ disappearance rate, nylon bags filled with 5 g of SSB were inserted into the ventral sac of two cannulated Holsteins cows and incubated for 0, 2, 4, 8, 16, 24, and 48 h. A total of 30 Hanwoo steers were fed the experimental diets, which were basal diet (control) and 7% SSB on an as-fed basis (4.35% dry matter [DM]), formulated according to requirements of the Korean Feeding Standard for Hanwoo. The experiment was conducted over 80 days using a completely randomized block design. Results: Soluble fraction a of DM and organic matter (OM) was 44.20% and 64.60% DM, fraction b was 23.00% and 19.40% DM, and c values (the rate of degradation of fraction b) were 0.04 and 0.04/h, respectively. The effective degradability of DM at rumen solid outflow rates of 0.02, 0.05, and 0.08/h was 59.83, 54.75, and 52.16, respectively, and for OM was 77.78, 73.52, and 71.34, respectively. Initial and final body weight, average daily gain, DM intake, and gain:feed did not differ significantly between control and SSB groups during the entire experimental period. Carcass traits of Hanwoo steers with SSB supplementation were not significantly different between treatments except for dressing percentage, which was greater with SSB treatment. The content of saturated fatty acid (SFA) was greater and that of unsaturated fatty acids (UFA) was lower in the SSB group than in the control group. The ratio of UFA to SFA was significantly lower in the SSB group than in the control group. Conclusion: A total mixed ration containing less than 4.0% DM of SSBs can be used in Hanwoo steers without a decrease in productivity and carcass traits.

• 한국임상수의학회지
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• 제30권1호
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• pp.45-48
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• 2013

수컷, 12년령, 2 kg의 푸들견이 오른쪽 앞다리 파행 평가를 위해 내원하였다. 병력 검사에서 교통사고 후 1년 동안 재발성 양측 어깨 관절 탈구를 보이다가 최근 들어 왼쪽 어깨는 유지가 잘 되고 오른쪽 어깨는 탈구가 심해진 것을 확인 하였다. 신체 검사에서 오른쪽 앞다리 파행을 확인 하였고, 방사선 검사에서 상완골 내측 탈구와 상완골과 견갑골의 겹침 현상을 확인 하였다. 수술 중 근위축, 상완 두갈래 근육 톤 감소, 어깨 관절 내측 인대 파열, 어깨 아래근 정지부 파열을 확인 하였다. 상완 두갈래근 변위술을 사용하였으나 수술 7일 후 재탈구를 확인 하였다. 견갑골 어깨 관절 부위에 장착한 두 개의 $2mm{\times}6mm$ 피질용 본 앵커와 상완골 어깨 관절 부위에 장착한 한 개의 $4mm{\times}6mm$ 해면질용 본 앵커를 이용 어깨 관절 내측 인대 복원술을 실시 하였다. 수술 직후 및 6주 후 방사선 검사에서 어깨 관절 탈구를 확인 할 수 없었다. 수술 후 6개월 신체 검사에서 파행은 더 이상 관찰 되지 않았다.

• 한국임상수의학회지
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• 제30권1호
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• pp.41-44
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• 2013

4년령 중성화한 수컷 시츄견이 우안에 녹는 궤양이라는 기왕력으로 전북동물의료센터에 내원했다. 안과 검사결과 우안에 각막 전체의 70%에 해당하는 각막 연화를 동반한 각막 천공이 관찰되었다. 또한 홍채 탈출과 섬유소 응괴가 각막 천공 중앙부에서 관찰되었다. 좌안의 위협 반사와 대광 반사는 정상이었다. 각막 결손 부위가 너무 컸기 때문에 각결막 판을 이용한 방법이나 각막 직접 봉합을 배제하였으며 말양막이식술을 시행하기로 결정했다. 말양막은 각막 윤부에 전체 각막을 다 덮을 수 있도록 9-0 나일론 봉합사를 이용하여 봉합을 실시했다. 양막이식 후 79일 째 육아조직과 색소침착이 다소 남아있었으나 우안의 위협 반사와 눈부심 반사는 모두 정상이었다. 비록 색소 침착과 육아조직이 각막에 남아있기는 했지만 개에서 말양막이식술은 녹는 궤양으로 기인한 각막 천공에서 시행해 볼 수 있는 유용한 치료법으로 생각된다.