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The impact of overnight lairage on meat quality and storage stability of pork loin

  • Minwoo Choi;Dongheon Lee;Hyun Jung Lee;Ki-Chang Nam;Sung-Sil Moon;Jong Hyun Jung;Cheorun Jo
    • Journal of Animal Science and Technology
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    • v.66 no.2
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    • pp.412-424
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    • 2024
  • Lairage, a part of the animal welfare practices, has been known to mitigate pre-slaughter stress in animals. However, research investigating the relationship between lairage and pork meat quality remains scarce. In this study, we conducted a comparative analysis of the physicochemical quality and storage stability of pork from pigs subjected to immediate slaughter (CON) and those provided with a 24 h lairage before slaughter (LRG) over a 7-day storage period. The loins from 20 castrated pigs in each group, respectively, were collected at 1, 3, 5, and 7 days and used for analysis of meat quality and storage stability, including pH, meat color, moisture, water holding capacity, drip loss, cooking loss, shear force, fatty acid composition, lipid oxidation, antioxidant activity, and electrical resistance. Overall, there were no significant differences in physicochemical meat quality parameters between CON and LRG groups. Similarly, no differences were observed in the storage stability of pork including 2-thiobarbituric acid reactive substances, 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity and electrical resistance. However, the proportion of unsaturated fatty acids was significantly higher in LRG compared to CON. In conclusion, 24 h lairage for castrated pigs had limited impact on meat quality and storage stability but led to an increase in the unsaturated fatty acid proportion.

A Study on the Spatial Structure of Eupchi(邑治) and Landscape Architecture of Provincial Government Office(地方官衙) in the Late Joseon Dynasty through 'Sukchunjeahdo(宿踐諸衙圖)' - Focused on the Youngyuhyun Pyeongan Province and Sincheongun Hwanghae Province - (『숙천제아도(宿踐諸衙圖)』를 통해 본 조선시대 읍치(邑治)의 공간구조와 관아(官衙) 조경 - 평안도 영유현과 황해도 신천군을 중심으로 -)

  • Shin, Sang sup;Lee, Seung yoen
    • Korean Journal of Heritage: History & Science
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    • v.49 no.2
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    • pp.86-103
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    • 2016
  • 'Sukchunjeahdo' illustration-book, which was left by Han, Pil-gyo(韓弼敎 : 1807~1878)in the late Joseon Dynasty, includes pictorial record paintings containing government offices, Eupchi, and Feng Shui condition drawn by Gyehwa(界畵) method Sabangjeondomyobeop(四方顚倒描法) and is the rare historical material that help to understand spatial structure and landscape characteristics. Youngyuhyun(永柔縣) and Sincheongun(信川郡) town, the case sites of this study, show Feng Shui foundation structure and placement rules of government offices in the Joseon Period are applied such as 3Dan 1Myo(三壇一廟 : Sajikdan, Yeodan, Seonghwangdan, Hyanggyo), 3Mun 3Jo(三門三朝 : Oeah, Dongheon, Naeah) and Jeonjohuchim(前朝後寢) etc. by setting the upper and lower hierarchy of the north south central axis. The circulation system is the pattern that roads are segmented around the marketplace of the entrance of the town and the structure is that heading to the north along the internal way leads to the government office and going out to the main street leads to the major city. Baesanimsu(背山臨水 : Mountain in backward and water in front) foundation, back hill pine forest, intentionally created low mountains and town forest etc. showed landscape aesthetics well suited for the environmental comfort condition such as microclimate control, natural disaster prevention, psychological stability reflecting color constancy principle etc. and tower pavilions were built throughout the scenic spot, reflecting life philosophy and thoughts of contemporaries such as physical and mental discipline, satisfied at the reality of poverty, returning to nature etc. For government office landscape, shielding and buffer planting, landscape planting etc. were considered around Gaeksa(客舍), Dongheon(東軒), Naeah(內衙) backyard and deciduous tree s and flowering trees were cultivated as main species and in case of Gaeksa, tiled pavilions and pavilions topped with poke weed in tetragonal pond were introduced to Dongheon and Naeah and separate pavilions were built for the purpose of physical and mental discipline and military training such as archery. Back hill pine tree forest formed back landscape and zelkova, pear trees, willow trees, old pine trees, lotus, flowering trees etc. were cultivated as gardening trees and Feng-Shui forest with willow trees as its main species was created for landscape and practical purposes. On the other hand, various cultural landscape elements etc. were introduced such as pavilions, pond serving as fire protection water(square and circle), stone pagoda and stone Buddha, fountains and wells, monument houses, flagpoles etc. In case of Sincheongun town forest(邑藪), Manhagwan(挽河觀), Moonmujeong(文武井), Sangjangdae(上場岱) and Hajangdae(下場岱) Market place, Josanshup<(造山藪 : Dongseojanglim(東西長林)>, Namcheon(南川) etc. were combined and community cultural park with the nature of modern urban park was operated. In this context, government office landscape shows the garden management aspect where square pond and pavilions, flowering trees are harmonized around side pavilion and backyard. Also, environmental design technique not biased to aesthetics and ideological moral philosophy and comprehensively considering functionality (shielding and fire prevention, microclimate control, etc.) and environmental soundness etc. is working.

A Study on the Spatial Structure of ChungChong-Do Province Eupchi in the Late Chosun Dynasty (조선후기(朝鮮後期) 충청도(忠淸道) 지방(地方) 읍치(邑治)의 공간구조(空間構造)에 관한 연구(硏究))

  • Kim, Ki-Deok;Lee, Jae-Heon
    • Journal of architectural history
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    • v.12 no.1 s.33
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    • pp.43-58
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    • 2003
  • This study is to analyze spatial structure of Eupchi(邑治) on Chungchong province with Chungchong-do regional maps(忠淸道地方地圖) and Eupjis(邑誌, topography) being compiled in the late Chosun dynasty. According to the analysis of it in this study, we make conclusions as follows; 1. Gunhyeon(郡縣) which had been Eupseong(邑城) on Chungchong-do in Chosun dynasty was 13 provinces, and the construction of Eupseong was the coast Eupseong built for the purpose of defense and military Eupseong built at Byeongyeong(兵營) and Geojin(巨鎭). And a measure used In the construction of a castle was Pobaekcheok(布帛尺) used to survey a frontier defence in Chosun dynasty, also Jucheok(周尺) or Yeongjocheok(營造尺) could be assumed to be wide use at that time. 2. Eupchi of Chungchong-do Gunhyeon was almost disposed to the south direction, also had been Jinsan(鎭山) safeguarding it. With relation to Jwahyang(坐向) and Jinsan, its Jinsan and Myeongdang-cheon(明堂川) match each other in location of Eupchi, as it get Jinsan sat, and take main river in front of it. And provincial government office to be the center of a Eupchi is organized into Gaeksa(客舍), Dongheon(東軒), Naea(內衙), Hyangcheong(鄕廳), and practical business facilities, Jakcheong(作廳) or Jangcheong etc., the others is composed for the use of support of those. 3. In most Eupchi in Chungchong province, the layout Sajikdan(社稷壇) and Yeodan(礪壇) was gone with a principle as they were disposed in the west and the north with Eupchi. Seonghwangdan(城隍壇) and Munmyo(文廟) was built in defiance of a principle, as a condition of province. Jangsi(場市) of Eupchi was opened in front of government office or Gaeksa, and the Gunhyeon which had Eupseong was established in the inside and outside of Eupseong.

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A Study on the Landscape Elements and Construction of Eupseong (county seat) in the Late Joseon Dynasty (조선후기 읍성 취락의 경관 요소와 경관 구성 - 태안읍성, 서산읍성, 해미읍성을 중심으로 -)

  • Jeon, Jong-Han
    • Journal of the Korean association of regional geographers
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    • v.21 no.2
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    • pp.319-341
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    • 2015
  • Eupseong (county seat) represents the Korean historic city which had constructed intentionally by central government during Joseon Dynasty. There were variety of government or county offices which named as Gaeksa, Dongheon, Nea, Jilcheong, and so on. Also, there are houses of the people in many Eupseong but not all of them. This study aims to reconstruct the landscape elements and its overall construction of Eupseong in the Late Joseon dynasty on the original land registration map(1913). For this purpose, the author underlines to set-up target period for reconstruction. This study considers the early 19th century in Joseon as completion period of Eupseong landscape, and then researches distribution of Eupseong and major elements of its landscape in national scale. Based on those results, the author tries to reconstruct location of major landscape elements and layout of Eupseong landscape in the early 19th century on the original land registration map in case of Taean Eupseong, Seosan Eupseong, and Haemi Eupseong in Chungcheongnam-do (province), Korea.

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Preliminary study on application of augmented reality visualization in robotic thyroid surgery

  • Lee, Dongheon;Kong, Hyoun-Joong;Kim, Donguk;Yi, Jin Wook;Chai, Young Jun;Lee, Kyu Eun;Kim, Hee Chan
    • Annals of Surgical Treatment and Research
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    • v.95 no.6
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    • pp.297-302
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    • 2018
  • Purpose: Increased robotic surgery is attended by increased reports of complications, largely due to limited operative view and lack of tactile sense. These kinds of obstacles, which seldom occur in open surgery, are challenging for beginner surgeons. To enhance robotic surgery safety, we created an augmented reality (AR) model of the organs around the thyroid glands, and tested the AR model applicability in robotic thyroidectomy. Methods: We created AR images of the thyroid gland, common carotid arteries, trachea, and esophagus using preoperative CT images of a thyroid carcinoma patient. For a preliminary test, we overlaid the AR images on a 3-dimensional printed model at five different angles and evaluated its accuracy using Dice similarity coefficient. We then overlaid the AR images on the real-time operative images during robotic thyroidectomy. Results: The Dice similarity coefficients ranged from 0.984 to 0.9908, and the mean of the five different angles was 0.987. During the entire process of robotic thyroidectomy, the AR images were successfully overlaid on the real-time operative images using manual registration. Conclusion: We successfully demonstrated the use of AR on the operative field during robotic thyroidectomy. Although there are currently limitations, the use of AR in robotic surgery will become more practical as the technology advances and may contribute to the enhancement of surgical safety.

Augmented Reality to Localize Individual Organ in Surgical Procedure

  • Lee, Dongheon;Yi, Jin Wook;Hong, Jeeyoung;Chai, Young Jun;Kim, Hee Chan;Kong, Hyoun-Joong
    • Healthcare Informatics Research
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    • v.24 no.4
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    • pp.394-401
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    • 2018
  • Objectives: Augmented reality (AR) technology has become rapidly available and is suitable for various medical applications since it can provide effective visualization of intricate anatomical structures inside the human body. This paper describes the procedure to develop an AR app with Unity3D and Vuforia software development kit and publish it to a smartphone for the localization of critical tissues or organs that cannot be seen easily by the naked eye during surgery. Methods: In this study, Vuforia version 6.5 integrated with the Unity Editor was installed on a desktop computer and configured to develop the Android AR app for the visualization of internal organs. Three-dimensional segmented human organs were extracted from a computerized tomography file using Seg3D software, and overlaid on a target body surface through the developed app with an artificial marker. Results: To aid beginners in using the AR technology for medical applications, a 3D model of the thyroid and surrounding structures was created from a thyroid cancer patient's DICOM file, and was visualized on the neck of a medical training mannequin through the developed AR app. The individual organs, including the thyroid, trachea, carotid artery, jugular vein, and esophagus were localized by the surgeon's Android smartphone. Conclusions: Vuforia software can help even researchers, students, or surgeons who do not possess computer vision expertise to easily develop an AR app in a user-friendly manner and use it to visualize and localize critical internal organs without incision. It could allow AR technology to be extensively utilized for various medical applications.

Nuclear Magnetic Resonance (NMR)-Based Quantification on Flavor-Active and Bioactive Compounds and Application for Distinguishment of Chicken Breeds

  • Kim, Hyun Cheol;Yim, Dong-Gyun;Kim, Ji Won;Lee, Dongheon;Jo, Cheorun
    • Food Science of Animal Resources
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    • v.41 no.2
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    • pp.312-323
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    • 2021
  • The purpose of this study was to use 1H nuclear magnetic resonance (1H NMR) to quantify taste-active and bioactive compounds in chicken breasts and thighs from Korean native chicken (KNC) [newly developed KNCs (KNC-A, -C, and -D) and commercial KNC-H] and white-semi broiler (WSB) used in Samgye. Further, each breed was differentiated using multivariate analyses, including a machine learning algorithm designed to use metabolic information from each type of chicken obtained using 1H-13C heteronuclear single quantum coherence (2D NMR). Breast meat from KNC-D chickens were superior to those of conventional KNC-H and WSB chickens in terms of both taste-active and bioactive compounds. In the multivariate analysis, meat portions (breast and thigh) and chicken breeds (KNCs and WSB) could be clearly distinguished based on the outcomes of the principal component analysis and partial least square-discriminant analysis (R2=0.945; Q2=0.901). Based on this, we determined the receiver operating characteristic (ROC) curve for each of these components. AUC analysis identified 10 features which could be consistently applied to distinguish between all KNCs and WSB chickens in both breast (0.988) and thigh (1.000) meat without error. Here, both 1H NMR and 2D NMR could successfully quantify various target metabolites which could be used to distinguish between different chicken breeds based on their metabolic profile.

Analysis of the Needs of Individuals with Disability for Rehabilitation Sports Service (재활운동 및 체육 서비스 제공을 위한 장애인 요구도 분석)

  • Kang, Dongheon;Park, Jiyoung;Eun, Seon-Deok
    • The Journal of the Korea Contents Association
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    • v.21 no.8
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    • pp.675-690
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    • 2021
  • Based on related studies on 'disability sports,' 'sports for all,' and 'rehabilitation sports,' this study collected the results of a survey on the disabled, who are the actual users of rehabilitation sports services. It analyzed the need for rehabilitation sports services. The requirements of persons with disabilities were extracted, and the extracted contents were presented as inductive content analysis. The researcher's preconceptions and subjective judgments were to be excluded as much as possible. Based on studies related to "Disability sports," "Sports for all for disability," and "Rehabilitation sports," conducted in Korea, a study that included the results of the survey on disabled people was selected. This study's results were categorized into eight categories (perception of sports activities, programs, instructors, facilities, accessibility, cost/support/financial resources, and others) for people with disabilities.

Participation Experience Analysis of Newsports Program for People with Stroke living in the Community (지역사회에 거주하는 뇌졸중 장애인의 뉴스포츠 프로그램 참여 경험 분석)

  • Kang, Dongheon;Park, Jiyoung;Eun, Seon-Deok
    • The Journal of the Korea Contents Association
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    • v.22 no.6
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    • pp.541-556
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    • 2022
  • Exercise programs conducted for people with stroke disabilities tend to be monotonous as they are mainly focused on therapeutic effects in the form of physical therapy performed in hospitals. However, the news sports program conducted in this study is thought to deform the intensity and difficulty of exercise in consideration of the exercise ability of each subject and to participate safely and interestingly to use equipment made of special materials. The purpose of the present study was to understand new sports program participation experiences in people with stroke. The qualitative data on eleven participants' new sports program participation experiences were acquired through in-depth interviews. As a result of the study, four subcategories (expectations for the program, experience in participating in the program, and program improvement plan) and ten core concepts were derived. Based on the results of this study, the new sports program for people with stroke living in the community after discharge is expected to be the basis for the development of community-based exercise programs considering the characteristics of stroke.

Disability Sports Instructor's Experience Analysis on Program Operation for People with Disability (장애인체육지도자의 프로그램 운영 경험 분석)

  • Park, Jiyoung;Kang, Dongheon;Eun, Seon-Deok
    • The Journal of the Korea Contents Association
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    • v.22 no.3
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    • pp.285-295
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    • 2022
  • The purpose of this study is to prepare primary data for providing smooth and systematic rehabilitation sports services by confirming the opinions of instructors experienced in the field of disability sports before the implementation of Article 15 'Rehabilitation sports' of the 'Act on Guarantee of Right to Health and Access to Health Services for Persons with Disabilities. In-depth interviews were conducted as a research method, and qualitative analysis was conducted on the contents of the interview. The in-depth interview is unstructured, allowing disability sports instructor to freely present their opinions on difficulties experienced while operating the program, necessary matters for rehabilitation sports implementation. We transcribed the recording data of the in-depth interview and coded the opinions through the thematic analysis method among qualitative research methods. As a result, the final 104 opinions were used and classified into 9 categories; rehabilitation sports goal, training rehabilitation sports instructor, evaluation items and educational guidelines, relationships with program participants, facilities utilization, effects, the timing of provision, and doctor roles.