• Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference
• /
• 2001.11a
• /
• pp.128-128
• /
• 2001

제지기술의 변화속도가 빨라지고 제품의 고품질화가 요구가 많아지면서 finishing 공정 에 대한 관심과 중요성이 점점 더 높아지고 있다. 소비자의 요구에 부합되는 제품의 품 질을 얻기 위해서 여러 가지 방법들이 개발되고 있으며, 그 중에서 calender 설비 및 처리 기술이 계속적으로 발전하고 있는 추세이다. 특히 coated paper 제조 공정에서의 s supercalender 처 리 기 술은 매 우 중요하다. F Finishing 공정은 종이의 품질을 결정하는 제지 공정의 마지막 단계로서 calendering 처리 방법에 따라 제품의 품질을 크게 변화시킬 수 있다. 따라서 본 연구에서는 기존의 s supercalendering 처리 조건을 변경시켜 도공지의 품질 특성을 관찰하였으며 실험실용 s supercalender와 현장 적용을 통하여 supercalender 처리 조건이 도공지 품질에 미치는 영향에 대하여 검토하고 이를 이용하여 제품 품질을 개선시키기 위해서 수행하였다. 안료 배합비를 달리하여 다양한 온도와 압력 조건을 적용하여 보았으며 동일한 백지광 택을 갖는 여러 조건들에 대해서 각각의 품질 특성을 살펴보았다. 동일 백지광택에서 온도가 높을수록 macro-roughness, micro-roughness는 더 우수하게 나타났으며 이는 printability의 차이로 이어 졌다. 실험실용 supercalender를 이용한 실험에서 경도가 다른 두 가지 탄성롤로 cotton roll 과 polymer roll을 사용하였으며 통일한 온도와 압력 조건에서 calendering 특성은 서 로 다르게 나타났다. Calendering 조건이 가혹할수록 두 roll간의 특성은 더욱 두드러지 게 나타났으며 macro-roughness 보다는 micro-roughness에서 차이가 더 큰 것으로 확인되었다. 이러한 두 roll간의 특성 차이로 인하여 실제 인쇄 결과는 다르게 나타날 것으로 예상된다.

• The Korea Journal of Herbology
• /
• v.22 no.3
• /
• pp.9-14
• /
• 2007

Objectives : This research was observed by examining the external and internal parts and the quantity of the surface components of the wild type and cultivar of Angelica dahurica in korea. Methods : The slice of the tested material mede by paraffin section technique was colored with Safranine Malachite Green contrast methods, and then observed and photographed by the microscope and examined the quantity of the surface components. Results : In the shape of the roots, the wild type had a very thin main root and 2 long roots, while the cultivar had a long root branched out from the short and thick main root making a square pyramid shape. Isoimperatorin was detected at Rt $17{\sim}18$ minutes. The wild type contained 0.56% while the cultivar contained it of 0.355%, thus the component of the wild type was about 1.5 times of that of the cultivar. Conclusions : It was thought that there might be also some differences in their genetic characteristics, etc.

• The Journal of Internal Korean Medicine
• /
• v.39 no.5
• /
• pp.949-954
• /
• 2018

Objective: This case reports the management of a chronic pyelonephritis patient treated with Hyeonsamjihwang-tang. Methods: The patient suffered from swelling and fatigue and was diagnosed with Soyangin Mangeum-syndrome. The patient was treated with Hyeonsamjihwang-tang for a 40 day period. Hematology, urinalysis, and the numerical rating scale were used to evaluate the effects. Results: After treatment with Hyeonsamjihwang-tang, the patient's complaints of symptoms decreased, and improvements were shown in hematology and urinalysis. Conclusions: Hyeonsamjihwang-tang has an effect on patients with chronic pyelonephritis.

• Food Science and Preservation
• /
• v.15 no.1
• /
• pp.133-138
• /
• 2008

This study investigated the antioxidant activities of extracts from Angelica dahurica roots after microwave-assisted extraction with different levels of energy (120, 240W) and extraction time (5, 10, 15 and 30 min). The highest extraction yield was 11.77 mg% in water at 240W for 30 min followed by 11.42 mg% in water at 120Wand 30 min. The highest total polyphenol contents was 32.36 mg/g in an ethanol extract, followed by 31.77mg/g in water extract at the same conditions of 240W, 30 min. The electron donating abilities both the ethanol extract obtained using 240W and 30 min and the water extract obtained employing 120W and 5min showed the highest values, 83.55% and 82.49% respectively at a concentration 1.0mg/mL. The highest superoxide dismutase (SOD)-like activity was 14.16% in ethanol extract at 120Wand 15min, followed by 13.22% in the water extract at 120W and 5 min. The best extraction yield and polyphenol content after microwave-assisted extraction were achieved with 240W and 30 min using water. The best condition for extraction of electron donating ability and SOD-like activity from A dahurica roots were 120W and 5 minutes using water.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.12 no.9
• /
• pp.4038-4045
• /
• 2011

To investigate whitening Effects of Angelica dahurica Radix Ethanol Extract (ADEE), we used melan-a cell line, brown guinea pig, and HMB-45. We treated with ADEE of 6.25, 12.5, 25, and 50 ${\mu}g/m{\ell}$ concentration in order to evaluate the effect of ADEE on cell viability and on morphological observation of melan-a cells. Also we were induced the artificial tanning spots by 1,500 mJ/$cm^2$ of ultraviolet B radiation on the backs of brown guinea pigs (approximately 450~500g) and then the test agent of $30{\mu}{\ell}$ was applied on the spots twice a day, five days a week, for five weeks respectively. The visible whitening effect was evaluated once a week. At the end of the experiment, the animals were sacrificed under anesthetization. The artificial tanning spots were obtained by biopsy punch and stained with HMB-45 to observe the gp100 proteins which were melanosomes. Our results show that cell viability was not reduce at ADEE concentrations between 6.25 and 50 ${\mu}g/m{\ell}$, melanin synthesis and melanocyte dendricity were decreased in ADEE treated melan-a cells increasing ADEE concentration. In the gross observation, ADEE treated groups had lower pigmentation than the vehicle control groups. And in the histological observation, ADEE treated groups had lower melanocytes than the vehicle control groups. Also in the quantitative analysis of the gp100 proteins using image analysis software, ADEE treated groups had a significantly lower value (p<0.001) than the vehicle control group and this resultsagreed with the results of observation under microscope. From these results, weconcluded that ADEE had positive whitening effect.

• Proceedings of the Korean Society for Information Management Conference
• /
• 2002.08a
• /
• pp.19-26
• /
• 2002

본 연구의 목적은 용어분류를 그 특성에 따라 유형 구분하고 그 각각의 장단점을 밝힘으로써 앞으로의 용어분류 연구를 위한 기반을 제공하는 것이다. 이를 위해 먼저 용어분류의 개념을 밝히고, 그 목적 및 활용분야를 논하였다. 다음으로 다양한 용어 분류 관련 사례를 그 내·외형적 특성에 따라 크게 유의어 사전류와 분류형 시소러스류의 두 가지 유형으로 나눈 후, 이를 다시 세분하여 그 각각의 특징을 분석하였다. 이 분석을 바탕으로, 특히 색인과 검색 등 정보처리에 필요한 용어분류의 유형과 특성을 논하였다.

• Nuclear industry
• /
• v.37 no.7
• /
• pp.13-14
• /
• 2017

원자력산업살리기협의회 회원기업 대표들은 7월 20일 국회 정론관에서 기자회견을 갖고 "탈원전 정책과 원자력 기업이 상생할 수 있는 길을 마련해 줄 것"을 호소했다. 협의회는 성명서를 통해 "원자력산업은 기술집약적 중소기업형 산업으로 기자재분야는 소재와 부품공급사의 90%가 중소기업"이라며 "신규 원전 건설 계획 백지화와 신고리 5 6호기 건설 중단 방침으로 약 700여개 원자력 공급업체와 95개의 원도급사 그리고 512개 하도급사와 협력사 등이 불안과 일자리 박탈 우려로 밤잠을 이루지 못하고 있다."고 읍소했다. 원자력산업살리기협의회는 무진기연 등 원자력 관련 중소기업 200여개사가 회원으로 가입돼 있다.

• Proceedings of the Korean Fiber Society Conference
• /
• 2007.11a
• /
• pp.415-416
• /
• 2007

• The Bulletin of The Korean Astronomical Society
• /
• v.33 no.1
• /
• pp.39.2-39.2
• /
• 2008

• The Korean Journal of Applied Statistics
• /
• v.10 no.1
• /
• pp.121-136
• /
• 1997

Spatial data is collected on a regular Cartesian lattice. In this paper we consider the model indentification of spatial autoregressive(SAR) models using AIC, BIC, pattern method. The proposed methods are considered as an application of AIC, BIC, 3-patterns for SAR models through three directions; row, column and diagonal directions. Using the Monte Carlo simulation, we test the efficiency of the proposed methods for various SAR models.