• Asian-Australasian Journal of Animal Sciences
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• 제20권4호
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• pp.523-528
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• 2007

This study was conducted to evaluate the feeding value of jambo grass (Sorghum $bicolour{\times}Sorghum$ sudanefe) silage and mott grass (Pennisetum purpureum) silage as a replacement of conventional fodder (jambo grass) in the diet of lactating Nili buffaloes (Bubalus bubalis). Thirty early-lactating ($45{\pm}4$ days), multi-parous Nili buffaloes, ten in each group, were allotted to three experimental diets. Jambo grass and mott grass were ensiled with molasses (at 2% of fodder DM) in two trench silos for 30 days. The control diet (JG) contained 75% jambo grass while the other two diets contained 75% jambo grass silage (JGS) and 75% mott grass silage (MGS). The remaining 25% DM in each diet was supplied by concentrates. Diets were mixed daily and fed twice a day ad libitum for 120 days. Dry matter intake (DMI) was higher with the JG diet compared with JGS and MGS diets. However, DMI as % body weight did not differ significantly in buffaloes fed either fodder or silage based diets. Crude protein (CP), digestible CP and NDF intakes were significantly higher on JG compared with silage-based diets. Apparent total tract digestibilities of DM, CP and NDF were similar in buffaloes fed JG, JGS and MGS diets. Milk yield (4% FCM) was similar in buffaloes fed JG and silage based diets. Fat, total solids, solid not fat, CP, true protein and non-protein nitrogen content of milk were similar in buffaloes fed fodder or silage based diets. The present results indicated that jambo grass and mott grass ensiled with 2% molasses for 30 days could safely replace the conventional fresh grass fodder (75% DM) in the diet of lactating Nili buffaloes without affecting their milk yield.

• 복식
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• 제62권8호
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• pp.149-165
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• 2012

This study is to understand the characteristics of women's Hanbok fashion in the modern Korea by investigating the features of colors and color arrangements of remaining relics. The summary of findings from the researches and analysis from over 1840 pieces of Hanbok relics in modern Korea are as follows: First, since western-style cloth were introduced and utilized for Hanbok from 1960, the number of colors have drastically increased. However, the most commonly used colors and parts throughout all the periods remained the same. These are Y, R and white colors for Jeogori and Y, R and PB colors for Chima. And, as for the representative color of each of the six periods, significant changes of color were found Jeogori in the 1960~1970s. While no clear color changes were found in the period prior to the 1960s and after the 1980s. Secondly, as for the color tones, although the high luminosity-low chroma were generally used over the periods, it was observed that various colors of low luminosity-high chroma began to be used from 1960 and so Jeogori became more colorful. And lastly, Y and white color were taking up the highest percentage in the solid color arrangement. When composing 2 colors, the Y tone color dominants with R tone as sub-color was the most prevalent, and when 3 and 4 colors were combined, the extra color were increasingly seen in the upper garment cuff and collar so that the arrangement of different colors increased the aesthetic symbols when combined with the colors of the Chima.

• Archives of Plastic Surgery
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• 제41권4호
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• pp.374-378
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• 2014

Background Angioleiomyoma, a vascular leiomyoma, is a rare, benign smooth-muscle tumor that originates in the tunica media of vessels. It occurs anywhere in the body, most frequently in the lower extremities. Methods We reviewed the medical records of 16 patients who were treated for angioleiomyoma between 2000 and 2012. The clinical features of angioleiomyoma and the correlation between symptoms and pathological subtypes were investigated. Results There were 9 males and 6 females. Ages of the patients ranged from 21 to 61. Pain was the primary symptom in 44% of the patients. Tumors were smaller than 2.0 cm in all dimensions and were located in the face in 4 patients, whereas 5 lesions occurred in the upper extremities and the remaining 7 in the lower extremities. Three histologic subtypes were identified: solid, venous, and cavernous. The subtypes did not correlate with the clinical symptoms. Conclusions Angioleiomyoma appears to be a rare tumor that occurs in the face and the extremities. The tumor usually occurs in middle age. A differential diagnosis of this tumor is difficult, but the tumor should be considered in the diagnosis of painful subcutaneous masses. Ultrasonography and magnetic resonance imaging can be helpful in the diagnosis of angioleiomyoma. These tumors can be successfully treated with simple excision, with a low recurrence rate.

• 상하수도학회지
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• 제30권4호
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• pp.459-469
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• 2016

Gas hydrate desalination process is based on a liquid to solid (Gas Hydrate, GH) phase change followed by a physical process to separate the GH from the remaining salty water. The GH based desalination process show 60.5-90% of salt rejection, post treatment like reverse osmosis (RO) process is needed to finally meet the product water quality. In this study, the energy consumption of the GH and RO hybrid system was investigated. The energy consumption of the GH process is based on the cooling and heating of seawater and the heat of GH formation reaction while RO energy consumption is calculated using the product of pressure and flow rate of high pressure pumps used in the process. The relation between minimum energy consumption of RO process and RO recovery depending on GH salt rejection, and (2) energy consumption of electric based GH process can be calculated from the simulation. As a result, energy consumption of GH-RO hybrid system and conventional seawater RO process (with/without enregy recovery device) is compared. Since the energy consumption of GH process is too high, other solution used seawater heat and heat exchanger instead of electric energy is suggested.

• 분석과학
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• 제23권2호
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• pp.172-178
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• 2010

Glutathione S-transferase는 식물의 해독작용에 중추적인 역할을 하는 화학 효소이다. 본 연구에서는 제초제 검출 키트 개발에 응용을 위하여 식물 해독작용에 중추적인 역할을 하는 glutathione Stransferase의 고정화 방법을 연구하였다. Chloroacetanilide계 제초제에 높은 효소 활성을 보이는 벼 유래 OsGSTF3에 공유결합을 통한 polystyrene-alkylamine 비드와 리간드결합을 통한 agarose-aminoalkyl 비드,포괄법을 통한 Na-alginate 비드를 이용하여 고정화를 실시하였다. 정제된 OsGSTF3 10 mg을 사용하여 고정화 하였을 때 0.62 mg/g 비드로 polystyrene-alkylamine에 가장 효율적으로 고정화 되었다. 고정화 된 OsGSTF3의 효소 활성은 야생형의 30%를 나타내었으며, 재사용에 의한 효소활성 측정시 3회 까지 처음 활성의 80% 이상을 유지하였다.

• Journal of Microbiology and Biotechnology
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• 제22권5호
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• pp.668-673
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• 2012

Biohydrogen production from organic wastewater by anaerobically activated sludge fermentation has already been extensively investigated, and it is known that hydrogen can be produced by glucose fermentation through three metabolic pathways, including the oxidative decarboxylation of pyruvic acid to acetyl-CoA, oxidation of NADH to $NAD^+$, and acetogenesis by hydrogen-producing acetogens. However, the exact or dominant pathways of hydrogen production in the anaerobically activated sludge fermentation process have not yet been identified. Thus, a continuous stirred-tank reactor (CSTR) was introduced and a specifically acclimated acidogenic fermentative microflora obtained under certain operation conditions. The hydrogen production activity and potential hydrogen-producing pathways in the acidogenic fermentative microflora were then investigated using batch cultures in Erlenmeyer flasks with a working volume of 500 ml. Based on an initial glucose concentration of 10 g/l, pH 6.0, and a biomass of 1.01 g/l of a mixed liquid volatile suspended solid (MLVSS), 247.7 ml of hydrogen was obtained after a 68 h cultivation period at $35{\pm}1^{\circ}C$. Further tests indicated that 69% of the hydrogen was produced from the oxidative decarboxylation of pyruvic acid, whereas the remaining 31% was from the oxidation of NADH to $NAD^+$. There were no hydrogen-producing acetogens or they were unable to work effectively in the anaerobically activated sludge with a hydraulic retention time (HRT) of less than 8 h.

• The Journal of Advanced Prosthodontics
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• 제5권2호
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• pp.84-91
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• 2013

PURPOSE. The aim of this study was to evaluate the stability of arginine-glycine-aspartic acid (RGD) peptide coatings on implants by measuring the amount of peptide remaining after installation. MATERIALS AND METHODS. Fluorescent isothiocyanate (FITC)-fixed RGD peptide was coated onto anodized titanium implants (width 4 mm, length 10 mm) using a physical adsorption method (P) or a chemical grafting method (C). Solid Rigid Polyurethane Foam (SRPF) was classified as either hard bone (H) or soft bone (S) according to its density. Two pieces of artificial bone were fixed in a customized jig, and coated implants were installed at the center of the boundary between two pieces of artificial bone. The test groups were classified as: P-H, P-S, C-H, or C-S. After each installation, implants were removed from the SRPF, and the residual amounts and rates of RGD peptide in implants were measured by fluorescence spectrometry. The Kruskal-Wallis test was used for the statistical analysis (${\alpha}$=0.05). RESULTS. Peptide-coating was identified by fluorescence microscopy and XPS. Total coating amount was higher for physical adsorption than chemical grafting. The residual rate of peptide was significantly larger in the P-S group than in the other three groups (P<.05). CONCLUSION. The result of this study suggests that coating doses depend on coating method. Residual amounts of RGD peptide were greater for the physical adsorption method than the chemical grafting method.

• 기술사
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• 제28권5호
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• pp.12-19
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• 1995

한국산 구약 감자(elephant-foot=Amorphoph-alus Konjak K.Koch)의 이화학적 성분 조성을 조사하기 위하여 국산 생감자와 분말을 시료로 하여 외국산 정분과 같이 분석한 결과 생감자는 수분이 80.64%였고 고형분의 대부분은 당류, 단백질, 희분이고 섬유나 지방은 미량 존재하였다. 건조 분말 정제품인 정분은 당류 74.42-80.41%, 수분은 10% 전후였고 만난 함량은 한국산이 일본, 중국산보다 상당히 적었고 역시 가용성 유리당도 일본산이 높고 한국산이 낮았는데 구성당은 한국산은 Sucrose가 많은 대신 외국산은 Fructose, Glu-cose 함량이 높았다. 한국산 정분의 단백질 함량은 외국산보다 2배 많았고 이의 amino acid 조성은 Glutamic acid, Aspartic acid, Arginine 등이 총아미노산의 45%를 차지하고 Valine, Serine, Leucines, Glycine의 순서로 많았다. 정분의 무기물은 K가 많고 P>Na>Ca순으로 많게 함유하였고 chip의 정분 수율은 한국산이 61%, 중국산은 57.6%였으며 정분의 백도는 색도 측정치는 중국산이 약간 높았으나 육안으로는 별 차이가 없이 비슷하였다.

• Restorative Dentistry and Endodontics
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• 제19권1호
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• pp.231-254
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• 1994

Fracture of cusp, on posterior teeth, especially those carious or restored, is major cause of tooth loss. Inappropriate treatments, such as unnecessarily wide cavity preparations, increase the potential of further trauma and possible fracture of the remaining tooth structures. Fracture potential may be directly related to the stresses exerted upon the tooth during masticatory function. The purpose of this study is to evaluate the fracture resistance of tooth, restored with composite resin inlay. In this study, MOD inlay cavity prepared on maxillary first premolar and restored with composite resin inlay. Three dimensional finite element models with eight nodes isoparametric solid element, developed by serial grinding-photographing technique. These models have various occlusal isthmus and depth of cavity, 1/2, 1/3 and 1/4 of isthmus width and 0.7, 0.85 and 1.0 of depth of cavity. The magnitude of load was 474 N and 172 N as presented to maximal biting force and normal chewing force. These loads applied onto ridges of buccal and lingual cusp. These models analyzed with three dimensional finite element method. The results of this study were as follows : 1. There is no difference of displacement between width of occlusal isthmus and depth of cavity. 2. The stress concentrated at bucco-mesial comer, bucco-disal comer, pulpal line angle and the interface area between internal slopes of cusp and resin inlay. 3. The vector of stress direct to buccal and lingual side from center of cavity, to tooth surface going on to enamel. The magnitude of vector increase from occlusal surface to cervix. 4. The crack of tooth start interface area, between internal slop of buccal cusp and resin inlay. It progresses through buccopulpal line angle to cervix at buccomesial and buccodistal comer. 5. The influence with depth of cavity to fracture of tooth was more than width of isthmus. 6. It would be favorable to make the isthmus width narrower than a third of the intercuspal distance and depth of cavity is below 1 : 0.7.

• 대한두경부종양학회지
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• 제13권1호
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• pp.30-34
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• 1997

Objectives: Calcification of the thyroid nodule has been reported to have a close relationship with differentiated thyroid carcinoma, however there are limited studies on the relationship between the calcified thyroid nodule and thyroid malignancy. The authors studied the clinical significance of calcification within the thyroid nodule. Materials and Methods: There were total of 60 patients who underwent surgery for calcified thyroid nodules which were identified from plain neck X-ray, ultrasound and computed tomography during the period January 1991 to June 1996 at the Department of Otorhinolaryngology-Head and Neck Surgery of Korea University Hospital. Six patients were not included because of recurrence and previous thyroid surgery. Histopathologic and radiologic analysis was done on the remaining 54 patients. Results: Results showed that 25 of 54 cases(46%) to be malignant histopathologically. Of the 25 malignant cases, papillary carcinoma was the most common with 22 cases followed by 2 cases of undifferentiated carcinoma and I case of medullary carcinoma. Statistically high incidence of malignancy was observed when the consistency of calcified thyroid nodule was solid, shape of calcification was irregular and inhomogenous, and adhesion of calcified thyroid nodule to the regional structure was present. Conclusion: The probability that a thyroid nodule is malignant has been reported to be 3­20%. However, about half of the thyroid nodules with calcification found to be malignant on this study, calcification of the thyroid nodule can be used as a guideline for detecting thyroid malignancy.