평탄성 지수 IRI와 PrI의 상관관계에 관한 연구

김국한,이병덕,최고일,양성철,Kim, Kook-Han,Lee, Byung-Duck,Choi, Go-Il,Yang, Sung-Cheol 한국도로학회 2003 한국도로포장공학회 논문집 Vol.5 No.1

포장의 평탄성은 자동차 주행시의 승차감 안전성 및 포장파손의 직접적인 영향인자로서, 도로 이용자 입장에서 도로상태를 평가하는 가장 중요한 사항이다. 이러한 포장의 평탄성은 포장 공용성 평가요소 중 가장 중요한 사항으로서 포장의 품질관리나 유지관리시에 중요하게 다루어져야 하나, 국가별로 각기 고유의 측정장비나 계산방법이 사용됨으로 인해 국제적으로 통일된 관리기준이 확립되어 있지 않은 실정이다. 국내의 경우 신설포장에 대해 포장평탄성의 관리기준을 적용하고 있으며, 관리 기준값은 7.6m CP 장비를 이용한 PrI를 사용하고 있는 실정이다. 그러나 이 장비는 수동식으로서 현장조사시 교통차단이 불가피하며, 측정 및 계산을 인력에 의존하고 있기 때문에 시간이 많이 소요되고 개인오차가 발생하는 문제점이 있다. 따라서 80km의 속도로 평탄성을 측정할 수 있는 자동식 평탄성 장비인 APL에서 IRI 값을 도입하여 수동식 장비의 문제점을 해결코자 하고 있다. 본 연구에서는 기존의 PrI 관리기준을 이용하여 IRI 관리기준을 정립하기 위해, 7.6m CP에 의한 PrI와 APL에 의한 IRI의 상관관계를 시험을 통해 규명하였다. 시험결과 분석에 따르면 아스팔트 및 시멘트 콘크리트 포장 모두는 신뢰 할 만한 상관관계가 나타남을 알 수 있었다. Road roughness, as the key factor influencing not only drivers' ride quality and safety but also pavement deterioration, is one of the most important pavement performance indicator to be evaluated by users' subjective assessment. For this reason, a specific number of the pavement roughness has been adopted to monitor the condition of a road for pavement management systems and to evaluate the quality of newly constructed sections, however, none of the unified methodology was internationally accepted. In Korea highway network, road roughness has been used mainly to evaluate newly placed pavement by using 7.6m CP (California Profile meter) to calculate PrI (Profile Index). But this instrument is manually operated to measure road profiles by traffic closure and their interpretation depends on personal bias. Therefore, problems arisen from the manually operated instrument will be overcome by using the APL (Longitudinal Profile Analyzer) which can be operated in the speed of 80km per hour. A study was conducted to correlate the relation from both concrete and asphalt pavement between IRI (measured by APL) and PrI (measured by 7.6m CP). Test results showed that there was a good correlation between IRI and PrI.

오미자(五味子)가 함유된 고제(膏劑)의 제조방법에 따른 기호도와 기능성 비교

김홍준,김영식,최고야,이금산,박경범,이승호,최영규,정승일,주영승,Kim, Hong-Jun,Kim, Young-Sik,Choi, Go-Ya,Lee, Guem-San,Park, Kyoung-Bum,Lee, Seung-Ho,Choi, Young-Kyu,Jeong, Seung-Il,Ju, Young-Sung 대한한의학방제학회 2011 大韓韓醫學方劑學會誌 Vol.19 No.1

Objectives : To further enhance the business value of domestic Schisandrae Fructus, new products composed of modified Gyeongok-go were developed. Their preferences and antioxidant behaviors were compared under different manufacturing processes. Methods : Sensory evaluation was carried out on a 7-point scale by a taste panel. Additionally, the antioxidant activities were investigated in vitro against ABTS[2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid)] and DPPH(2,2-diphenyl-1-picrylhydrazyl). Results : The differences among each sample were not statistically significant in sensory evaluation. In contrast, the antioxidant properties of each sample can have up to twice effect distinction at a final concentration of 2.5 mg/ml. Conclusions : Manufacturing methods, while having smaller effect on sensory evaluation, greatly affected the antioxidant properties. As a consequence, the optimum manufacture conditions need to be established using different manufacture conditions and activity search methods.

인천대교에 적용한 해상 대구경 현장타설말뚝의 설계 특성 : 지지력 관점

조성민(Cho Sung-Min),정일환(Jung Il-Hwan),최고일(Choi Go-Il),복기찬(Bok Gi-Chan) 대한토목학회 2006 대한토목학회 학술대회 Vol.2006 No.10

출류(朮類)한약재의 외,내부형태와 이화학패턴 연구

김정훈 ( Jung Hoon Kim ),이금산 ( Geum San Lee ),최고야 ( Go Ya Choi ),황성연 ( Sung Yeoun Hwang ),김홍준 ( Hong Jun Kim ),정승일 ( Seung Il Jeong ),주영승 ( Young Sung Ju ) 대한본초학회 2009 大韓本草學會誌 Vol.24 No.2

Objectives: To determine the discriminative criteria for Atractylodes rhizomes, the experiment of external-internal characteristics and physicochemical pattern analysis were performed. Methods: External characteristics was observed using stereoscope. The sectioned materials which were covered with parffin were stained by Ju`s method. Physicochemical patterns were analyzed using HPLC/DAD. Results: 1. External shape of original plant: Atractylodes macrocephala and A. japonica had relatively long petioles and 3-5 parted leaves. A. macrocephala had big purple flowers whereas A. japonica had relatively small white flowers and pinnate bracts. A. lancea had sessile leaves and white flowers, and the end parts of degenerated stamens were bent. 2. External shape of herbal medicine: A. macrocephala which was fist-shaped rhizome had pa-pillate processes and the cross section was light gray and sulcate. A. japonica and A. lancea were connected-beady or tubercular rhizomes, and the cross sections were both yellow-colored white. However, the cross section of A. japonica was fibrous, the width of cortex was narro-wer than that of stele, and radial shape in cortex was rare, whereas the width of cortex in A. lancea was similar to that of stele in size, and radial shape in cortex was obvious. 3. Internal shape of herbal medicine: A. macrocephala and A. lancea did not have lignified fascicles in cortex. However, the vascular bundles and vessels of A. macrocephala were wedge shaped and radial arrangement, and vascular bundles were densely populated in stele whereas those of A. lancea were repeatedly arranged and thinly extended to cortex. A. japonica had lignified fascicles in cortex and the width of vascular bundles was conspicuously thick with narrow intervals. 4. Physicochemical pattern analysis: A. macrocephala and A. lancea contained atractylenolide Ⅰ and atractylenolide Ⅲ whereas A. japonica contained atractylenolide Ⅰ, atractylenolide Ⅲ, diacetyl-atractylodiol, compound-4, compound-5. The three species of Atractylodes rhizomes showed different chromatogram patterns. Conclusions: The results could be used as discriminative criteria for Atractylodes rhizomes and as fundamental materials to researches of further pattern analysis and biological reaction.

Cinnamic acid, Cinnamaldehyde의 부위별 정량을 통한 계지(桂枝)의 음편(飮片) 규격 연구

김영식 ( Young Sik Kim ),이금산 ( Guem San Lee ),김정훈 ( Jung Hoon Kim ),최고야 ( Go Ya Choi ),정승일 ( Seung Il Jeong ),조수인 ( Su In Cho ),주영승 ( Young Sung Ju ),김홍준 ( Hong Jun Kim ) 대한본초학회 2011 大韓本草學會誌 Vol.26 No.2

Objectives: In the present study, the contents of cinnamic acid and cinnamaldehyde in three different parts of Cinnamomi Ramulus (CR) (the whole body, the bark part, and the wood part) was evaluated using UPLC (ultra performance liquid chromatography) in order to investigate a suitable cutting method. Methods: Analysis was performed on SMART LC with UV detector. Reference compounds were separated on Inertsil ODS-4 column (2.1 mm × 50 mm, 3 μm, GL Science, Japan) using isolation elution with water and acetonitrile each containing acetic acid at a flow rate of 500 μL/min. Additionally, samples of CR were purchased from pharmacy of medicinal herb. Results: The correlation coefficients of the cinnamic acid and cinnamaldehyde levels showed good linearity (r2 ≥ 0.9999) over the linear ranges. Furthermore, the bark part exhibited higher concentration levels of reference compounds than the wood part in all samples. In addition the bark exfoliation rates in oblique and perpendicular-long cut samples of CR were lower than the perpendicular-short cut samples. Conclusions: These results suggested that the optimal cutting method would be able to reduce the bark exfoliation. Therefore, the oblique or perpendicular-long cutting method is considered to be a better cutting type than the perpendicular-short cutting method.

외부 형태와 Chromatographic Fingerprint를 이용한 전호류 약재 비교 연구

김정훈 ( Jung Hoon Kim ),이금산 ( Guem San Lee ),최고야 ( Go Ya Choi ),김영식 ( Young Sik Kim ),이승호 ( Seung Ho Lee ),김홍준 ( Hong Jun Kim ),정승일 ( Seung Il Jeong ),주영승 ( Young Sung Ju ) 대한본초학회 2012 大韓本草學會誌 Vol.27 No.3

Objective: This study aimed to compare the difference between Angelica decursiva, P eucedanum praeruptorum and Anthriscus sylvestris which have been used as herbal medicine, Jeonho (Angelicae Decursivae Radix) in Korea and provided the evidence to exclude A. sylvestris not to use as Joenho. Methods : The similarities of original medicinal herb with samples from local market were evaluated including morphological appearance and chromatographic fingerprint. In addition, relation between original medicinal herb and local samples were analyzed using statistical clustering methods. Results: A. decursiva, P. praeruptorum and A. sylvestris represented different morphological appearances and chromatographic fingerprint. Several samples from China exhibited similar morphological and chromatographic appearance with A. decursiva or P. praeruptorum. Eleven samples from Korea showed identical similarity to A. sylvestris. Conclusions: Since A. sylvestris represented obvious differences compared to A. decursiva and Ppraeruptorum, it is required not to use A. sylvestris as medicinal herb, Jeonho. Additionally, exact identification and quality control must be applied to A. decursiva or P. praeruptorum from China in order to maintain therapeutical efficacy.

후박(厚朴)의 외,내부형태 및 이화학패턴연구

이금산 ( Guem San Lee ),김정훈 ( Jung Hoon Kim ),최고야 ( Go Ya Choi ),강대훈 ( Dae Hoon Kang ),황성연 ( Sung Yeoun Hwang ),정승일 ( Seung Il Jeong ),김홍준 ( Hong Jun Kim ),주영승 ( Young Sung Ju ) 대한본초학회 2008 大韓本草學會誌 Vol.23 No.4

Objectives: To determine the standards for discrimination of Magnoliae Cortex, the experiment of specific external-internal characters and the physicochemical pattern analysis were performed. Methods: External characteristics was observed using a stereoscope. Paraffin-mediated sectioned materials were stained by Ju`s method. Physicochemical patterns of materials were analyzed using HPLC. Results: 1. Botanical characteristics: Magnolia officinalis had one seed and a white flower, while M. obovata had two seeds and a white flower. Machilus thunbergii had berry and spherical fruits and yellowish green panicles. 2. External characteristics: M. officinalis and M. obovata were dark and thick. M. officinalis was gray brown and greasy while M. obovata was light-gray, less oily and smoothly sectioned. Machilus thunbergii was thin and relatively light or yellow-brown, coarsely sectioned and faintly specific scents. 3. Internal characteristics: The bast parts of M. officinalis and M. obovata were commonly wider than Machilus thunbergii. The cork cortex of M. officinalis was 10~mg/L cell layers with many oil cells, while that of M. obovata was 4~7 cell layers with less oil cells. Machilus thunbergiis xylem which consisted of ring-shaped cambium at 1st and 2nd part was occupied in large portion. 4. Physicochemical pattern: Both M. officinalis and M. obovata involved honokiol and magnolol. All kinds of M. officinalis involved Magnatriol B but one kind of M. ovobata and all of Machilus thunbergii didn`t. Machilus thunbergii showed different pattern of chromatogram from that of 2 species above. Conclusions: These results could be used as standards for discrimination of Magnoliae Cortex and as the method of objectification in medicinal herbs giving the basic resource for bioactivity research.

한국산 강활(羌活)의 잔류농약에 대한 연구

오서진 ( Seo Jin Oh ),나승영 ( Seung Young Na ),김홍준 ( Hong Jun Kim ),최고야 ( Go Ya Choi ),정승일 ( Seung Il Jeong ),주영승 ( Young Sung Ju ) 대한본초학회 2006 大韓本草學會誌 Vol.21 No.4