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Modified Design of Anterolateral Thigh Free Flap for Hypopharyngeal Reconstruction (하인두 재건을 위한 전외측 대퇴부 유리 피판의 변형된 도안)

  • Kim, Sung-Chan;Kim, Eun-Key
    • Archives of Reconstructive Microsurgery
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    • v.21 no.1
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    • pp.14-20
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    • 2012
  • Purpose: Defect after ablation of hypopharyngeal cancer often requires reconstruction by free tissue transfer. Since neo-hypopharynx is totally buried, various methods have been suggested for monitoring. We propose a modified design of anterolateral thigh (ALT) free flap for reconstruction of pharyngolaryngectomy defect, which has an exteriorized part for clinical monitoring and allows for primary closure. Materials and Methods: Three consecutive patients with hypopharyngeal cancer were reconstructed with ALT flap with modified design: 1) distal part of flap was elongated into fusiform shape and used as exteriorized monitoring segment with a deepithelized bridge and 2) proximal part was designed as curve so the maximum width of the flap was reduced to less than 10 cm. Results: Patient 1, 2 had uneventful postoperative course with healthy skin color and fresh pin prick bleeding. In patient 3, defect after cancer ablation was shorter than usual and deepithelized bridge was longer. When the general hemodynamic status of the patient was aggravated in postoperative course, the color of monitoring skin was changed. Viability of the whole flap was confirmed by endoscopy. However, leakage developed after 3 weeks and repair was necessary. In all patients the donor sites were closed primarily. Conclusion: By the modified design of ALT flap, clinical monitoring can be possible by examining exteriorized monitoring flap and also donor site can be closed primarily. However possibility of false positive exists and technical caution and patient selection is needed because of danger of leakage.

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Molecular and biochemical characterization of a novel actin bundling protein in Acanthamoeba

  • Alafag Joanna It-itan;Moon Eun-Kyung;Hong Yeon-Chul;Chung Dong-Il;Kong Hyun-Hee
    • Parasites, Hosts and Diseases
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    • v.44 no.4 s.140
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    • pp.331-341
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    • 2006
  • Actin binding proteins play key roles in cell structure and movement particularly as regulators of the assembly, stability and localization of actin filaments in the cytoplasm. In the present study, a cDNA clone encoding an actin bundling protein named as AhABP was isolated from Acanthamoeba healyi, a causative agent of granulomatous amebic encephalitis. This clone exhibited high similarity with genes of Physarum polycephalum and Dictyostelium discoideum, which encode actin bundling proteins. Domain search analysis revealed the presence of essential conserved regions, i.e., an active actin binding site and 2 putative calcium binding EF-hands. Transfected amoeba cells demonstrated that AhABP is primarily localized in phagocytic cups, peripheral edges, pseudopods, and in cortical cytoplasm where actins are most abundant. Moreover, AhABP after the deletion of essential regions formed ellipsoidal inclusions within transfected cells. High-speed co-sedimentation assays revealed that AhABP directly interacted with actin in the presence of up to $10{\mu}M$ of calcium. Under the electron microscope, thick parallel bundles were formed by full length AhABP, in contrast to the thin actin bundles formed by constructs with deletion sites. In the light of these results, we conclude that AhABP is a novel actin bundling protein that is importantly associated with actin filaments in the cytoplasm.

A Short-chain Dehydrogenase/reductase Gene is Required for Infection-related Development and Pathogenicity in Magnaporthe oryzae

  • Kwon, Min-Jung;Kim, Kyoung-Su;Lee, Yong-Hwan
    • The Plant Pathology Journal
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    • v.26 no.1
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    • pp.8-16
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    • 2010
  • The phytopathogenic fungus Magnaporthe oryzae is a major limiting factor in rice production. To understand the genetic basis of M. oryzae pathogenic development, we previously analyzed a library of T-DNA insertional mutants of M. oryzae, and identified ATMT0879A1 as one of the pathogenicity-defective mutants. Molecular analyses and database searches revealed that a single TDNA insertion in ATMT0879A1 resulted in functional interference with an annotated gene, MGG00056, which encodes a short-chain dehydrogenase/reductase (SDR). The mutant and annotated gene were designated as $MoSDR1^{T-DNA}$ and MoSDR1, respectively. Like other SDR family members, MoSDR1 possesses both a cofactor-binding motif and a catalytic site. The expression pattern of MoSDR1 suggests that the gene is associated with pathogenicity and plays an important role in M. oryzae development. To understand the roles of MoSDR1, the deletion mutant ${\Delta}Mosdr1$ for the gene was obtained via homology-dependent gene replacement. As expected, ${\Delta}Mosdr1$ was nonpathogenic; moreover, the mutant displayed pleiotropic defects in conidiation, conidial germination, appressorium formation, penetration, and growth inside host tissues. These results suggest that MoSDR1 functions as a key metabolic enzyme in the regulation of development and pathogenicity in M. oryzae.

A Basic Study for the Integrated Managment of the Production Transportation, and Installation of Precast Concrete Panels (P.C.부재의 생산, 운송 및 시공부분의 일체화된 관리를 위한 기초연구)

  • 조건희;김재준
    • Proceedings of the Korea Concrete Institute Conference
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    • 1994.10a
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    • pp.415-422
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    • 1994
  • Recent new town construction project proouced large numbers of apartment houses using precast concrete (P. C.) panels. l'bst construction companies involved in this project put their management focus on to the individual control of P.C. panel producing plants and the job sites. Little attention was paid to the integrated management of the production. transportation. and im;tallation of P. C. panels. Numerous job site delays experienced in the new town project were largely based on the poor coordination between these three key disciplines of the P. C. apartment construction. This stlldy was initiated with an .intention to improve coordination between these disciplines. Activities of these disciplines were identified and related data were gathered. This was performed through the interv:iews with the personnel involved in P. C. constructlon and through the analy::;is of the related documents and publications. Based on this information. the authors are nolol developing a model IoIhich will provide a foundation for opt:iJnal.ly coorc.inated control of the proouction. transportation, and installation of P. C. panels for apartment construction. In this paper. the authors briefly present intermediate results of this study.

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Formation of Internal Wind Paths of Open Space and Its Effect on Meteorological Factors and the Generation of Negative Air Ions (녹지 내부 바람통로가 기상요소와 음이온 발생량 변화에 미치는 영향)

  • Oh, Deuk-Kyun;Yoon, Yong-Han
    • Journal of Environmental Science International
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    • v.29 no.4
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    • pp.403-413
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    • 2020
  • The purpose of this study is to understand the formation of internal wind paths of open space and its effect on meteorological factors and the generation of negative air ions. Various types of internal wind paths of open space were formed. Subsequently, changes in meteorological factors in each type were measured and the generated negative air ions were analyzed. The four key findings of the study are summarized as follows. First, the average wind speed formed inside the open space was analyzed such that the difference in wind speed was dependent on the difference in the composition of the wind path. Second, the negative air ion generation was observed to have the same trend as the average wind speed difference. Third, changes to the meteorological factors were more evident depending on the difference in wind path formation patterns. Solar radiation was expected to be highly affected by the physical structure (direction) of the target site. The relative humidity was found to show large difference depending on the different wind path type; however, this difference was significantly reduced when converting to absolute humidity. Fourth, it was found that the wind path formation type of open space affects meteorological factors through path analysis, and the changed meteorological factors affect the amount of generated negative air ions. Two conclusions can be obtained based on these results. First, the changes in internal wind speed formation of open space directly reduced the amount of generated negative air ions. Second, the changes in wind speed affect meteorological factors as well as the amount of generated negative air ions.

The Expressional Characteristics of Interior Design in Japanese Lifestyle Stores to Create Brand Identity (브랜드 아이덴티티 확립을 위한 일본 라이프스타일 스토어의 실내디자인 표현 특성)

  • Kim, Hee-Yeon;Kim, Moon-Duck
    • Korean Institute of Interior Design Journal
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    • v.24 no.6
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    • pp.171-182
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    • 2015
  • With the increased quality of life, the meaning of houses is shifting from a functional space for the simple purpose of residing to a symbolic space representing life as personality. Starting with the advancement of IKEA into Korea last year, global brands are about to enter into Korea. As Korean brands are not certain about how to set their direction in the situation where global brands have rushed into the market, it was thought that a key to solve the problem could be found from the cases of the lifestyle stores of Japan, which is moving one step ahead of Korea. Considering the circumstances, the author limited the subjects of this study to the lifestyle stores that have already established their brand identity and have prominent expressional characteristics of interior design in Japan. Research and analysis were conducted through site inspection and books. As a study method, literature and previous research were reviewed to find the program characteristics of interactivity and participation, the spatial characteristics of accessibility and the expressional characteristics of symbolism, scene continuity and function complexity, as the basis for an analysis. The results of the analysis showed that Japanese lifestyle stores are appealing to consumers as the spaces with their own differentiated space composition and various programs, by establishing their unique concepts and explicit brand identity. It is expected that such expressional characteristics of interior design will be of help in defining the direction of interior design of Korean lifestyle stores in the future.

Advances in Ultrasonic Testing of Austenitic Stainless Steel Welds

  • Moysan, J.;Ploix, M.A.;Corneloup, G.;Guy, P.;Guerjouma, R. El;Chassignole, B.
    • Journal of the Korean Society for Nondestructive Testing
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    • v.28 no.3
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    • pp.245-253
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    • 2008
  • A precise description of the material is a key point to obtain reliable results when using wave propagation codes. In the case of multipass welds, the material is very difficult to describe due to its anisotropic and heterogeneous properties. Two main advances are presented in the following. The first advance is a model which describes the anisotropy resulting from the metal solidification and thus the model reproduces an anisotropy that is correlated with the grain orientation. The model is called MINA for modelling anisotropy from Notebook of Arc welding. With this kind of material model1ing a good description of the behaviour of the wave propagation is obtained, such as beam deviation or even beam division. But another advance is also necessary to have a good amplitude prediction: a good quantification of the attenuation, particularly due to grain scattering, is also required as far as attenuation exhibits a strong anisotropic behaviour too. Measurement of attenuation is difficult to achieve in anisotropic materials. An experimental approach has been based both on the decomposition of experimental beams into plane waves angular spectra and on the propagation modelling through the anisotropic material via transmission coefficients computed in generally triclinic case. Various examples of results are showed and also some prospects to continue refining numerical simulation of wave propagation.

The Recent Trends of Clinical Research on General Anxiety Disorder in Chinese Herbal Medicine (범불안장애의 중의학 약물 임상시험 최신 동향)

  • No, Dong-Jin;Lee, Sang-Ryong;Jung, In-Chul
    • Journal of Oriental Neuropsychiatry
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    • v.20 no.4
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    • pp.79-89
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    • 2009
  • Objectives : To address suitable method for designing clinical trial intervening Traditional Korean Herbal Medicine on General anxiety disorder through the recent clinical research in Chinese Herbal Medicine. Methods : Randomized, controlled trials(RCTs) of treatment of general anxiety disorder intervening herbal medicine were searched through CNKI databases. We examined several item of studies and evaluated using Jadad scale. We searched articles in CNKI with the key word "General anxiety disorder or 廣範性焦慮症", among them we selected the clinical trial studies related with herbal medicine except for case reports, studies of acupuncture therapy or west medicines. Results : 11 RCT studies of herbal medicine met inclusion criteria. The Studies used CCMD-3, HAMA as inclusion tool and mainly HAMA as a evaluation tool. Studies were progressed for 2-8 weeks, mostly used various positive control. Experiment medicine were mainly 理氣劑, 安神劑. In most studies, experiment group made similar or higher efficacy in comparison with control group. Mean Jadad score of studies was $1.3{\pm}0.67$, and only one study was double-blinded among 11 studies. Conclusions : RCT studies on general anxiety disorder of chinese herbal medicine tend to focus on investigating effect of herbal medicine through setting positive control group with CCMD-3 and HAMA. But, most studies had low quality of trial, for lack of pattern identification, evaluation and inclusion tool of chinese medicine. Clinical trials of general anxiety disorder should provide good quality by randomization, double-blinding, and multi-site trial.

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Spatial and temporal dynamics of the abundance of crustose calcareous algae on the southernmost coral reefs of the western Atlantic (Abrolhos Bank, Brazil)

  • Amado-Filho, Gilberto M.;Bahia, Ricardo G.;Mariath, Rodrigo;Jesionek, Michel B.;Moura, Rodrigo Leao;Bastos, Alex C.;Pereira-Filho, Guilherme Henrique;Francini-Filho, Ronaldo Bastos
    • ALGAE
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    • v.33 no.1
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    • pp.85-99
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    • 2018
  • Crustose calcareous algae (CCA) constitute one of the main reef builders on the Abrolhos Bank, Brazil. Once CCA taxonomy is locally understood, differences in growth-forms may be useful for the delimitation of taxa using characteristics such as the presence or absence of surface protuberances. Here, growth-forms were used to identify and quantify the most common CCA taxa on the shallow reefs (3-10 m) of the Abrolhos Bank to determine possible changes in the CCA community over a period of 10 years, and the ecological significance of CCA to local reefs was interpreted. The CCA assemblages were surveyed from 2006-2015 by using fixed photoquadrats at four sites in the inner (10-20 km from the mainland) and mid-shelf reefs (40-75 km from the mainland). The five most common CCA taxa were Pneophyllum conicum, the Lithophyllum kaiserii / Lithophyllum sp. complex, Melyvonnea erubescens, the Hydrolithon boergesenii / Porolithon onkodes complex and Peyssonelia sp. The overall mean CCA cover on the reefs was 20%. A comparison with a previous monitoring study in the same region indicated that the CCA cover nearly doubled from 2003-2008 to 2006-2015. This study reveals that the coral-killing species P. conicum dominated CCA flora on the shallow Abrolhos reefs in the last decade, and the local specific abundance of CCA slightly fluctuated over time and was species- and site-specific. The information obtained in this study contributes to the understanding of the ecology of the key calcifying components of the Abrolhos reefs and provides a useful baseline for exploring the responses of CCA to future environmental changes.

A Study on the Vegetation Mapping of the Urban Neighborhood Park (도시근린공원의 식생도 작성에 관한 연구)

  • Her, Seung-Nyung;Choi, Jung-Ho;Kwon, Ki-Won;Seo, Byung-Key;Lee, Kyoo-Seock
    • Journal of Environmental Impact Assessment
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    • v.10 no.2
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    • pp.147-155
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    • 2001
  • Vegetation maps present an inventory of existing plant communities, their location, extent and geographical distribution in the area concerned. For green space management and environment assessment accurate vegetation maps can be used effectively for analyzing the relationships between vegetation and the physical environment. However, the Current Vegetation Map, Forest Stand Map, and Green Naturality Map in Korea do not represent the status of vegetation community exactly. Therefore, the purpose of this study is to produce a detailed vegetation map at urban neighborhood parks in Korea by collecting the exact current vegetation data from field survey, and remote sensing(RS) and storing these data in geographical information systems(GIS). Ultimately it is intended to be used in planning and managing the urban green space. The study area is 66.1ha and it is classified into total 19 communities together with parks, orchards, bare land, grassland, tombs and gardens, etc. There is 53.7ha(81.2%) difference between the detailed vegetation map and the current vegetation map. There is also 46.9ha(70.8%) difference between the detailed vegetation map and forest stand map. After this study, it was concluded that it needs producing the detailed vegetation map used in managing urban green spaces because the existing vegetation map does not represent the status of vegetation in the study site.

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