• Journal of the Korean Institute of Landscape Architecture International Edition
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• 제2호
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• pp.160-163
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• 2004

Suburban green lands play an indispensable role in maintaining norma! operation of the urban ecosystem. However, the suburban green lands are also the most fragile and easily disturbed places since they are close to the city edges. The suburban green lands of Kunming city show diversified forms, and it would be difficult to avoid taking part of those green areas in the rapidly expanding urban construction. To better preserve and utilize the suburban green lands of Kunming, it is vitally important to base ourselves on the practical situation of Kunming and take into full consideration the features of urban expansion and suburban green lands, so as to optimize the structures of suburban green lands, scientifically plan and readjust the remaining suburban green lands, and enhance the comprehensive efficiency of the daily dwindling suburban green lands in protecting and regulating the ecosystem, beautifying the environment and outputting economic benefits. Suburban green lands in some specialized areas must be put under strict protection.

• 한국식품저장유통학회지
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• 제1권1호
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• pp.21-27
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• 1994

For the purpose of improving microbiolgical quality of carrot powder, which is being used as minor ingredients of convenience foods, comparative influence of Υ-irradiation and ethylene oxide(E.O) fumigation was investigated with emphasis on sterilizating effect and physicochemical propertied Carrot powder sample was contaminated with thermophiles 4.0$\times$103/g, acid tolerant bacteria 3.7$\times$103/g and coliforms 1.6$\times$102/g, respectively. And thus sanitation process was required. E.O fumigation in commercial practice was not enough to destroy thermophilic bacteria, while Υ-irradiation at below 5 kGy could reduce all microorganisms up to undectected levels. Radiosensitivity(D10) of thermophiles was shown to be 2.25 kGy. The applicable dose of irradiation to the improvement of microbiological quality showed insignificant influences on the physicochemical quality of the sample.

• 한국식품저장유통학회지
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• 제15권5호
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• pp.617-621
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• 2008

Sequential passes through $Sephadex^{TM}$ columns were used to select phages that displays ligands for dextran ($\alpha$-1,6 linked linear chains) from a phage antibody library. Those phages that bound to the $Sephadex^{TM}$ in each iteration were replicated in E. coli. A phage preparation isolated on the third round selection produced 5.4 nephelos turbidity units (NTU) in a dextran specific immunonephelometric assay, a 2.2 fold higher value than the phage preparation from the first round selection. This phage gave $72\;{\pm}\;10$ normalized intensity (N.I.) in a dip-stick assay against high molecular size dextran (T2000, $2\;{\times}\;10^6) and significantly lower color ($30\;{\pm}\;6$ N.I.) against low molecular size dextran (T10, $10^4$). The presence of an Fab insert in each of these phages was confirmed using a $\beta-galactosidase linked assay and polymerase chain reaction.

• 국제학술발표논문집
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• The 2th International Conference on Construction Engineering and Project Management
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• pp.376-385
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• 2007

Construction project is necessary element for human life to upgrade the quality and convenience. However, due to its contradictory nature to the environment preservation, environmental pollution and damage, deterioration of natural scenery, noise/vibration, water quality pollution, etc. caused in the process of construction greatly affect the environment. For the building or construction project, its possible impact on environment during construction work and after completion must be predicted at its design phase, which will result in the completion of the architecture convenient for human being with its environmental pollution reduced to minimum level. In this study, the checklist of environmental factors was suggested, which should be taken into account at its design phase in conducting the construction work. Proposed checklist was linked with the developed web-based system for the convenience of users like designer and construction manager, etc. It is expected that the checklist suggested by this study will help the designer and construction manager to continue the steady development from the environmental viewpoint during the design phase.

• 한국문헌정보학회지
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• 제54권4호
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• pp.261-281
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• 2020

다크 아카이브를 통해 다양한 유형의 전자기록물을 장기적으로 보존하는 활동은 그 중요성이 점차 증대하고 있으나, 현재 다크 아카이브에서는 전자기록물 장기보존을 위한 최적화된 정보패키지 구조가 마련되어 있지 않다. 이에 본 연구에서는 다크 아카이브의 핵심적인 프로세스를 중심으로 OAIS 참조모델 정보패키지를 재구성하여 4개의 카테고리를 제안하였다. 각 카테고리의 세부 기술항목은 OAIS 참조모델, ISO 23081, 기록관리 메타데이터 표준, ISAD(G), ISAAR(CPF), ISDF, ISDIAH를 기반으로 총 4개의 상위요소와 27개의 하위요소로 구성하였다. 이는 다크 아카이빙에 최적화된 정보패키지 구성의 기반으로 활용될 수 있으며, 전자기록물의 장기 보존을 보다 효율적으로 지원할 수 있을 것으로 기대된다.

• Journal of Periodontal and Implant Science
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• 제48권4호
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• pp.236-250
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• 2018

Purpose: Resorption of the alveolar bone is an unavoidable consequence of tooth extraction when appropriate alveolar ridge preservation (ARP) measures are not taken. The objective of this trial was to test the hypothesis that dimensional changes in the alveolar bone after tooth extraction would be reduced by inserting an equine collagen membrane and a collagen cone to fill and seal the alveolus (as ARP), in comparison to extraction with untreated alveoli. Methods: In this randomized clinical trial, 31 patients were directly treated with the collagen material after extraction of a tooth from the maxilla (the ARP group). Twenty-nine patients served as the control group. After extraction, no further treatment (i.e., no socket preservation measures) was performed in the control group. Changes in the alveolar process immediately after extraction and after an 8 (${\pm}1$)-week healing period were evaluated 3-dimensionally. Blinded analyses were performed after superimposing the data from the digitalized impressions and surfaces generated by cone-beam computed tomography. Results: Both the ARP and control groups showed a reduction of bone in the alveolar area after tooth extraction. However, significantly less bone resorption was detected in the clinically relevant buccal region in the ARP group. The median bone reduction was 1.18 mm in the ARP group and 5.06 mm in the control group (P=0.03). Conclusions: The proposed hypothesis that inserting a combination material comprising a collagen cone and membrane would lead to a difference in alveolar bone preservation can be accepted for the clinically relevant buccal distance. In this area, implantation of the collagen material led to significantly less alveolar bone resorption. German Clinical Trials Register at www.drks.de, DRKS00004769.

• 한국도서관정보학회지
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• 제42권4호
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• pp.281-309
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• 2011

이 연구는 전자기록물의 첨부물 형태로 수집 관리되는 디지털 연구성과물의 장기보존을 위한 메타데이터요소를 설계하여 제안하였다. 설계는 국내외 연구성과물을 관리하는 기관의 메타데이터 구조와 CERIF와 PREMIS 보존 메타데이터를 참고하였다. 연구결과, 우리나라 디지털 연구성과물의 장기보존을 위한 메타데이터 구조를 연구정보, 서지정보, 기록정보로 구분하였다. 연구정보는 과제, 인명, 기관으로 구분하였으며 8개 상위요소, 29개 하위요소로 구성하였다. 서지정보는 연구성과물인 연구보고서의 서지사항에 대한 요소로써 하위요소 없이 13개의 상위요소로 구성하였다. 기록정보는 연구성과물의 생산을 보고한 전자기록물의 맥락, 구조, 내용, 관리과정에 대한 요소로써, 18개 상위요소와 62개 하위요소로 제안되었다.

• 한국기록관리학회지
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• 제16권4호
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• pp.79-120
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• 2016

변화하는 컴퓨팅 환경에 따라 공문서 생산 환경이 G-클라우드 및 클라우드 온-나라 시스템으로 전환하고 있다. 더불어 공문서 포맷도 독자 포맷인 HWP을 대신하여 개방형 규격인 ODF가 정착할 것으로 전망된다. 이에 본 연구는 현행 공문서 장기보존 전략을 재검토 하고, ODF 생산 문서 보존에 적합한 문서보존포맷과 장기보존포맷 설계 방향을 제시하고자 한다. 생산 포맷이 ODF인 기록은 문서보존포맷으로의 변환 없이 기록관리 메타데이터를 추가한 확장 ODF 포맷을 제안하고자 하며 독자포맷의 보존에도 ODF를 검토하였다. 장기보존 포맷, 즉 NEO 포맷 변환 현황을 알아보고 BagIt 규격 패키지를 ISO21320으로 제정된 ZIP을 적용하여 장기보존포맷을 설계하였다.

• Journal of Periodontal and Implant Science
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• 제47권4호
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• pp.194-210
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• 2017

Purpose: The aim of the present study was to evaluate the healing of post-extraction sockets following alveolar ridge preservation clinically, radiologically, and histologically. Methods: Overall, 7 extraction sockets in 7 patients were grafted with demineralised bovine bone mineral and covered with a porcine-derived non-crosslinked collagen matrix (CM). Soft tissue healing was clinically evaluated on the basis of a specific healing index. Horizontal and vertical ridge dimensional changes were assessed clinically and radiographically at baseline and 6 months after implant placement. For histological and histomorphometric analysis, bone biopsies were harvested from the augmented sites during implant surgery 6 months after the socket preservation procedure. Results: Clinically, healing proceeded uneventfully in all the sockets. A trend towards reduced horizontal and vertical socket dimensions was observed from baseline to the final examination. The mean width and height of resorption were 1.21 mm (P=0.005) and 0.46 mm (P=0.004), respectively. Histologically, residual xenograft particles ($31.97%{\pm}3.52%$) were surrounded by either newly formed bone ($16.02%{\pm}7.06%$) or connective tissue ($50.67%{\pm}8.42%$) without fibrous encapsulation. The CM underwent a physiological substitution process in favour of well-vascularised collagen-rich connective tissue. Conclusions: Socket preservation using demineralised bovine bone mineral in combination with CM provided stable dimensional changes of the alveolar ridge associated with good reepithelialisation of the soft tissues during a 6-month healing period.

• Journal of the Korean Wood Science and Technology
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• 제32권5호
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• pp.86-92
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• 2004

본 연구는 백탄보드와 오버레이 백탄보드를 비포름알데히드계 수지 접착제를 사용하여 습식공법으로 제조하고, 백탄보드의 포장용 상자로서의 기능을 검토하기 위하여 에칠렌가스 흡착과 딸기의 보관성을 측정하였다. 그결과, 백탄보드의 에칠렌 가스 흡착성능은 종이보다 월등히 좋았고 백탄 자체보다 높았으며, 오버레이 백탄보드와 비오버레이 백탄보드간 가스흡착성능은 차이가 없었다. 종이상자와 PVC상자 내 딸기와 백탄보드상자 내 딸기의 잿빛곰팡이 발생시간을 비교한 결과, 각각 2일 후, 4일 후로 나타났으며 박엽지와 부직포 사이의 흡착성의 차이도 역시 없었고, 백탄보드의 보관성 효과가 약 2배 좋았다. 결과적으로 백탄보드의 종류(혼합형, #40-60형)나 박엽지와 부직포 오버레이 백탄보드간의 신선도 유지효과의 차이는 없었다.