• Journal of Periodontal and Implant Science
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• 제26권1호
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• pp.276-292
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• 1996

The purpose of this study was to evaluate whether removal of gingival epithelium with pulsed Nd :YAG laser could inhibit the downgrowth of junctional epithelium after alloplastic material grafting in periodontal bone defect. The periodontal bone defects were created surgically on the palatal aspect of the upper right and left molar teeth in 30 rats and filled with resorbable calcium carbonate($Biocoral\;450^{(R)}$: Inoteb, France). The control sites(right molar area) was sutured. The test side (left molar area) received controlled deepithelization of the oral and sulcular epithelium with pulsed Nd:YAG laser($Sunrise\;Maste^{(R)}$: Sunrise Technologies, U.S.A.) under the mode of 1.75W, 15Hz, 116mJ/pulse and was sutured. The control and test sites were evaluated clinically and histologically, at 1, 3, 7, 14, and 28 days postoperation. Clinically, the gingiva showed normal color and shape at the 5th day in the control site and at the 10th day in the test sites. Histologically, the junctional epithelium was formed at the 7th day in the control sites and at the 14th day in the test sites, and the long JE attachment were observed at the 28th day in both sites. The attachment of connective tissue to root surface was observed initially at the 7th day in the control sites and at the 14th day in the test sites, and completed at the 28th day in both sites. In summary, these results showed that the removal of oral epithelium using pulsed Nd:YAG Laser could not prevent epithelial downgrowth after alloplastic material implantation in rat periodontal bone defect.

• 조형예술학연구
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• 제8권
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• pp.129-159
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• 2005

Web sites have become one of most important factor for sales products as well as advertising communications in these days. So numerous web sites have been developed for corporations and brands. It is not easy to getting more attention as a prominent web site expression among various types of numerous web sites. Due to the voluminous expansion of visual communications and the change of the media. new advertising creative must be needed for serving to differentiate the message, inviting audiences to participate more positively in Web site communications. This thesis aims at reviewing images and semiotics for analyzing web sites. And this thesis is about the significations of web sites for some of supreme brands. Chapter I describes the aim of this thesis about the signification of web sites, especially concentrate on the intro-pages of worldwide supreme brands. such as Chanel, Louis Vuitton, Yves Saint Laurent, Prada, and Burberry. And Chapter II introduces the general concept of Image and Semiotics. Chapter III deals with the signification of the web sites with introducing semiotic methods such as the theory of R. Barthes. Chapter IV discusses the signification of Images of web sites as an advertising creative talking into consideration of semiotic theories. And this thesis analyze almost all visual images and verbal message by the theory of R. Barthes. In this matrix, a. particular image of web site can be analyzed into its basic structure of pictorial and word elements , i. e., into the representations the viewer uses and identifies. It's my belief that one of aesthetic engineering approaches such as Semantic Differential Method and semiotic approaches such as the Interpretant Matrix for advertising design images provide basic methods which is about defining the process of constructing and coding the advertising images as well as analyzing and decoding advertising expressions. So I suggest these kinds of studies on the images of web sites as well as advertising design images.

• 한국지하수토양환경학회:학술대회논문집
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• 한국지하수토양환경학회 1996년도 경북지부 결성 및 추계학술발표회 논문집
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• pp.39-49
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• 1996

Hundreds of contaminated sites have been generated due to the past mismagement of toxic substances, the lack of adequate environmental controls and ignorance of the potential environmental impacts of general activities in Canada. The general public, industry and governments have been addressing the contaminated sites with a number of cleanup responses. Environmental protection and remediation have become top priorities for the public and private sectors alike in Canada. Between the late 1980s and the early 1990s, the Canadian Environmental Protection Act and Canada's Green Plan were followed by provincial and territorial laws and policies to regulate contaminated sites. The National Contaminated Site Remediation Program(NCSRP) was initiated in 1989. It has been administered through bilateral agreements between the federal and participating provincial/territorial governments. They have committed a total of $250 million toward orphan site cleanup and technology development/demonstration over a five year period. The federal government has committed an additional $25 million to assess contaminated sites on federal crown land. Over 40 orphan high-risk contaminated sites, over 230 federal sites and over 35 technology development/demonstration projects have been addressed. The Canadian Council of Ministers of the Environment has developed a series of guidance documents to ensure a consistent and successful implementation of the Program. The management/regulation scheme of contaminated sites generally consists of： 1) identifying and investigating sites, 2) determining site contamination, 3) recognizing responsibility and liability, 4) assessing priority for remediation, 5) activation, evaluation and implementing remediation options, and 6) documenting remediation completion. The NCSRP supported the successful development/demonstration of a wide range of innovative remedial technologies. They are related to stabilization/solidification, thermal washing/flushing, advanced oxidation, sonics, and groundwater contaminated with hydrocarbons, PAHS, PCBs, heavy metals, and other hazardous pollutants in a variety of site environments.

• 한국동물위생학회지
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• 제35권3호
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• pp.183-189
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• 2012

Tsutsugamushi disease or scrub typhus cause by Orientia tsutsugamushi is an endemic disease in Korea. Chigger mites and field rodents play roles in transmission of the disease by the vector and host of the agent. The purpose of this study is to investigate the density of the chigger mites and field rodents due to environmental factors such as temperature, relative humidity, soil thickness and the various vegetations to the 9 field rodent collection sites. The total 62 field rodents was captured by the Sherman collapsible traps from April to October 2009 at the Jangseong of Jeonnam Province, Korea. The trapping rate of the field rodents by the different collecting sites was dominant at subside storage water (24%), bush near by dam (22%), bank around field (20%), followed by 18% of grassy field and surround cattle shed. The distribution of chigger mites by the different collecting sites was the highest at Bush near by dam (28.7%). And the sites of subside storage water, bank around field and surround cattle shed were 20.4%, 18.8%, 16.4%, respectively. On the other hand the collecting sites of stream bank and ridges between rice paddies were not collected. The temperature to the collecting sites was showed $24.1^{\circ}C$ in June and $24.2^{\circ}C$ in October which was higher than April ($10.6^{\circ}C$), whereas lower than May ($25.3^{\circ}C$) and September ($26.8^{\circ}C$). The highest number of mites was collected at $24.2^{\circ}C$ and 46.6% relative humidity in October. The chigger mites and field rodents were highly collected between 18 and 24% at the sites where are loosely in the superficial layers of the soil from 8.0 cm to 10.2 cm. Total 25 species of vegetation were distributed at the collecting sites. In the present study, strong evidence was found that bank around field and grassy field were provided for the prevalence sites of tsutsugamushi disease.

• 한국콘텐츠학회논문지
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• 제12권11호
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• pp.492-501
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• 2012

최근 자연성지에 대한 관심이 증대되고 있다. 자연성지란 특정 민족이나 공동체에게 특별한 영적 중요성을 갖는 육상 또는 해상의 구역으로서 정의된다. 본 연구는 최근 이슈화되고 있는 자연성지에 대한 개념과 가치, 관리원칙에 대하여 이론적으로 고찰하였다. 또한, 자연성지의 가치를 적용 가능한 국내 천연기념물 식물의 현황을 분석하고 그 특성을 살펴보았다. 분석결과 국내 천연기념물 식물 중 63건이 이에 해당되었으며, 생물다양성, 문화성, 경관 및 미적 가치와 함께 관광자원으로써의 가치를 지니고 있었다. 이는 자연성지의 가치와 일치하는 것이었으며, 향후 우리나라 자연성지 등재 작업에 기초자료로 제공하고자 한다. 본 논문은 국제적으로 중요성이 대두되고 있는 자연성지를 국내 천연기념물 식물 측면에서 재조명함으로써 어떻게 관리하고 보전해야 하는지 보여주었다는데 의의를 지니며, 향후 보다 구체적이고 실증적인 추가 연구가 필요하다.

• 한국환경과학회지
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• 제29권11호
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• pp.1125-1139
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• 2020

This study investigated the distributional pattern of meiobenthos associated with future deep-sea mining in the Korea Deep Ocean Study area present in the Clarion-Clipperton Fracture Zone (CCFZ) located in the southeastern part of the North Pacific Ocean. Standing stocks of meiobenthos were investigated in benthic impact experiment sites (BIS) and Korea Institute of Ocean Science & Technology long-term monitoring (KOMO) sites during the 2008-2014 annual field survey. A total of 14 taxa of meiobenthos were identified. Nematodes were the most abundant taxon (60-86%). Harpacticoid copepods (5-26%) and benthic foraminifera (1-12%) were also dominant at all sites. The total meiobenthic densities varied from 4 to 150 ind./10 cm2. The mean value of total meiobenthic abundance was higher at BIS than at KOMO sites, but there was no significant difference between the two sites. The mean values of the number of taxa and biomass at BIS and KOMO sites were similar. The mean abundance of nematodes that were the most dominant taxa was also higher at BIS than at KOMO sites. The standing stocks in our study sites were relatively lower than those previously reported at other CCFZ sites. These results seem to reflect a low organic concentration in the study area.

• Animal cells and systems
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• 제3권1호
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• pp.29-39
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• 1999

Current data on reproductive characters of endemic and native species are essential to provide a strategy for the conservation of these species. Red pine (Pinus densiflora Sieb. & Zucc.) is one of the dominant, native tree species in Korea, but its reproductive ecology is not well-known. In 1997, the pattern of variation in cone and seed yields contributing to the conservation of declining populations of red pines was examined. Plant height and dbh were measured, and several new cones were collected from each tagged tree after counting the number of cones on each tree. For a subset of cones sampled, the number of fertile scales, the number of seeds at three development stages (early/late aborted, and filled seed), seed wing size, wing color, and individual filled seed mass were measured. The three sites which differed significantly in mean plant size also differed in mean cone and seed production per plant. However further analyses showed that most variation in characters examined occurred among plants within sites, but not among sites. An average of 90% of the potential seeds on the cones aborted at an early developmental stage, demonstrating that early abortion is a major factor affecting the number of filled seeds per cone. Individual seed mass was the only character which exhibited significant variations among sites as well as among trees within sites. Individual seed mass was overall negatively correlated with both the percentage of late abortion and the number of old cones per plant, suggesting that both the past and current years' reproductive activities have caused variations in seed mass. The potential dispersal distance of red pine seeds is quite large. However, wing loading was correlated with seed mass and number in a complex pattern across the sites. Distribution of seeds with varied colored wings differed among sites and among trees within sites. These results suggest that red pines at different sites might possess different strategies to cope with selection pressures acting during the final phase of reproduction, from seed dispersal to establishment. Then the ‘fitted’ red pine trees at each site should be identified and managed to conserve or restore populations.

• 치과방사선
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• 제20권1호
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• pp.103-112
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• 1990

The purpose of this study was to estimate absorbed dose of each important anatomic site of phantom (RT-2l0 Head & Neck Section/sup R/, Humanoid Systems Co., U.S.A.) head in occlusal radiography. X-radiation dosimetry at 12 anatomic sites in maxillary anterior topography, maxillary posterior topography, mandibular anterior cross-section, mandibular posterior cross-section, mandibular anterior topographic, mandibular posterior topographic occlusal projection was performed with calcium sulfate thermoluminescent dosimeters under 70Kvp and 15mA, 1/4 second (8 inch cone) and 1 second (16 inch cone) exposure time. The results obtained were as follows: Skin surface produced highest absorbed dose ranged between 3264 mrad and 4073 mrad but there was little difference between projections. In maxillary anterior topographic occlusal radiography, eyeballs, maxillary sinuses, and pituitary gland sites produced higher absorbed doses than those of other sites. In maxillary posterior topographic occlusal radiography, exposed eyeball site and exposed maxillary sinus site produced high absorbed doses. In mandibular anterior cross-sectional occlusal radiography, all sites were produced relatively low absorbed dose except eyeball sites. In mandibular posterior cross-sectional occlusal radiography, exposed eyeball site and exposed maxillary sinus site were produced relatively higher absorbed doses than other sites. In mandibular anterior topographic occlusal radiography, maxillary sinuses, submandibular glands, and thyroid gland sites produced high absorbed doses than other sites. In mandibular posterior topographic occlusal radiography, submandibular gland site of the exposed side produced high absorbed dose than other sites and eyeball site of the opposite side produced relatively high absorbed dose.

• 박물관보존과학
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• 제18권
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• pp.93-114
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• 2017

현재 베트남에는 ①탕롱 유적, ②호 왕조의 성채, ③미선 유적, ④호이안 고도시, ⑤후에 유적 등 5곳의 세계문화유산, ⑥하롱 베이, ⑦퐁나케방 국립공원 등 2곳의 세계자연유산, 세계복합유산인 ⑧짱안 경관유적 1곳 등 총 8곳의 유네스코 세계유산이 등재되어 있다. 지역적으로 보면 북부지역에 4곳, 중부지역에 4곳으로 분포하며, 남부지역에는 하나도 없다. 베트남의 자연유산은 모두 전형적인 석회암 카르스트 지형 경관이며, 2000년대 이후 등재된 문화유산 지역들은 대부분 북부지역의 옛 왕조들의 수도였던 도성 유적이다. 지금까지 베트남의 세계문화유산 등재 정책은 북부지역의 역사적 정통성을 강조한 유적을 중심으로 진행되어 왔으나, 향후 베트남 정부의 문화 정책이 좀더 남북 지역간 격차를 줄이고 통합적으로 진행될 수 있기를 기대한다.

• 경영정보학연구
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• 제5권2호
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• pp.91-108
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• 2003

인터넷과 웹을 전략적으로 이용하는 기업들이 기하급수적으로 증가하면서, 많은 기업들이 웹 사이트를 구축하여 운영하고 있다. 그러나 아직도 대부분의 기업들은 이를 충분히 활용하고 있지 못한 실정이다. 훌륭한 웹사이트를 구축했다 할지라도, 웹사이트가 사용자의 니즈를 충족시키지 못하고 사용자들이 웹사이트에 흥미를 느끼지 못한다면 웹사이트의 효과는 줄어들 것이다. 본 연구는 이러한 측면에서 사용자의 관점에서 본 웹 사이트의 동기유발 효과에 대하여 연구하였으며, 업종별 웹사이트 평가는 WebMAC Business에서 제공하는 흥미적 요인, 의미적 요인, 구조적 요인, 사용용이성 요인으로 사용자의 모티베이션을 측정하였다. 결과적으로, 이들 4가지 요인들은 업종별로 유의한 차이를 보였으며, 금융업, 인터넷 기업, 소매업에 비해 제조업은 상대적으로 웹 사이트의 모티베이션이 낮게 평가되었다.