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기계발골육의 특성과 이용

  • 이유방
    • KOREAN POULTRY JOURNAL
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    • v.12 no.2 s.124
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    • pp.92-97
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    • 1980
  • 가금도체로부터 살코기를 발라내는 기계발골육은 수동발골육에 비해 손색없는 단백질로서 기계발골기가 개발된 후로 육제품 원료육으로 각광을 받고 있다. 이 기계발골육은 보다 싼 값으로 산란노폐계육을 공급할 수 있도록 하는 의미에서 원료육확보에 새로운 길을 열어주고 있어 국내에서도 이의 점차적인 보급 활용이 이루어져야 할 것이다.

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특집 : 미세혈관 합병증 - 말초혈관에 의한 족부병변 - 당뇨발 괴사의 진단과 치료

  • Han, Seung-Hwan
    • The Monthly Diabetes
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    • s.259
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    • pp.22-25
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    • 2011
  • 당뇨발의 발생원인으로 신경병증 및 혈관병증이 있다. 신경병증의 경우 발의 자기 방어기전의 소실로 족부에 궤양이 유발되나, 혈관병증에 의한 혈액순환 장애는 궤양의 발생뿐 아니라, 산소 및 영양공급을 차단 시켜 궤양의 치료까지 어렵게 만들어 발이 까맣게 썩어가는 괴사까지 초래하게 된다.

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Quantitative Determination of Cristobalite Content in Diatomite and Filtered Food (규조토와 여과식품 중 크리스토발라이트의 정량분석)

  • Jeong, Gi Young
    • Journal of the Mineralogical Society of Korea
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    • v.32 no.4
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    • pp.313-321
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    • 2019
  • Diatomite is a silicic porous sedimentary rock composed of diatom frustules, used for filtration aid, filler, absorbent, abrasive, carrier, insulator, and fertilizer. During the calcination of diatomite to improve physical properties for filtration-aid application, amorphous silica is transformed to cristobalite. X-ray diffraction and scanning electron microscopy studies were carried out for 17 diatomite samples, showing that 16 diatomite samples contain cristobalite in the range of 6~100 %. Concentration of respirable cristobalite in air is regulated as harmful substances, but the residual cristobalite in food is treated as generally safe substance. The determination procedure of cristobalite content in food was established for managing food safety. Calibration curve of cristobalite filtered on silver membrane were obtained by X-ray diffraction. The lower limit of quantification was evaluated as 2.7 mg. The cristobalite was not detected in the analyses of selected food samples using the established procedure.

Podocytopathy and Morphologic Changes in Focal Segmental Glomerulosclerosis (초점분절사구체경화증에서 발세포병증과 형태 변화)

  • Jeong, Hyeon Joo
    • Childhood Kidney Diseases
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    • v.17 no.1
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    • pp.13-18
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    • 2013
  • Podocytopathy is glomerular lesions characterized by podocyte injury. It is observed in various glomerular diseases, but minimal change disease and focal segmental glomerulosclerosis (FSGS) are the prototypes. In this review, morphologic features of podocyte injury and subtypes of FSGS will be reviewed briefly. Effacement of podocyte foot processes is the most common feature of podocyte injury. As podocytic injury progresses, intracytoplasmic vacuoles, subpodocytic cyst, detachment of podocytes from the glomerular basement membrane and apoptosis develop. Glomerular capillary loops in epithelium-denuded area undergo capillary collapse. Synechia and hyalinosis may accompany this lesion. To manifest segmental sclerosis, podocyte loss above a threshold level may be required. Injured podocytes can injure neighboring intact podocytes, and thereby spread injury within the same lobule. FSGS can be categorized into five subtypes by morphologic characteristics; not otherwise specified (NOS), perihilar, cellular, tip, and collapsing types. Each subtype has been reported to show different clinical courses and associated conditions, but there are controversies on its significance. With recent progress in the discovery of genetic abnormalities causing FSGS and plasma permeability factors, we expect to unravel pathophysiology of FSGS and to understand histological sequences leading to FSGS in near future.

A comparative study of lower extremity muscle activity in adults in their 20s with flat foot that applied low-dye taping and foot intrinsic muscle strengthening exercise (Low-dye 테이핑과 발 내재근육 강화 운동을 적용한 편평발을 가진 20대 성인의 하지 근육활성도 비교 연구)

  • Yoo, Kyung-Tae
    • Journal of Industrial Convergence
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    • v.19 no.5
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    • pp.103-110
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    • 2021
  • The purpose of this study was to investigate effect of low-dye taping and foot intrinsic muscle strengthening exercise on the muscle activity of the tibialis anterior, calf muscles, and long calf muscles during one-foot standing in subjects with flat feet. The subjects were 16 adults in their 20s with flat feet, and they were divided into low-dye taping (LTG; n=8) and foot intrinsic muscle strengthening exercise (FSG; n=8) groups. Each group underwent the appropriate intervention twice a week for 6 weeks. The muscle activity of the tibialis anterior, long calf muscle, and medial calf muscle was measured. Repeated two-way ANOVA was performed to compare changes in muscle activity before and after the intervention. As a result of muscle activity measurement, LTG significantly decreased between before and after the experiment in all muscles (p<.05). In FSG, only the tibialis anterior significantly decreased between before and after the experiment (p<.05). Therefore, low-dye taping and foot intrinsic muscle strengthening exercises will be helpful for efficient the lower extremity muscle activity of flat foot.

Effects of support feet on active feet during Y-Balance Test (Y-Balance Test 시 지지발이 활동발에 미치는 영향)

  • Byung-Hoon Woo
    • Journal of the Korean Applied Science and Technology
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    • v.40 no.6
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    • pp.1249-1258
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    • 2023
  • The purpose of this study was to reveal the effect of COP variable of support feet on relative reach distance and composite score of active feet during YBT. 29 adults in their 20s(age: 24.4±3.0 yrs, height: 171.0±10.5 cm, weight: 72.1±12.1 kg, leg length: 88.2±5.8 cm) participated in the study. Using YBT, relative reach distance and composite score of active feet were calculated, and COP variables of support feet were measured on left and right support feet. Multiple regression analysis was used to determine the effect of COP variables of support feet during YBT on relative reach distance and composite score. As a result of the study, during YBT, when supporting right feet, the influence of AP COP velocity, ML COP velocity and COP velocity in posterolateral direction was significant, and when supporting left feet, the influence of AP COP velocity, ML COP velocity in posteromedial direction improved relative reach distance and composite score.

A Study on the Background of the Rock-cut Sculpture of Two Buddhas Seated Side-by-Side in Wonpung-ri, Goesan (괴산 원풍리 마애이불병좌상의 조성 배경)

  • Jeong, Seongkwon
    • Korean Journal of Heritage: History & Science
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    • v.53 no.3
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    • pp.224-243
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    • 2020
  • The rock-cut relief of two Buddhas seated side-by-side in Wonpungri is a large Buddha sculpture in relief on the side of a cliff in Wonpung-ri, Goesan. This Buddha sculpture is from the Buddhist scripture Sutra of the Lotus. <法華經> Two seated Buddhas statues were prevalent in the Balhae Kingdom, but this was not popular in Silla and Goryeo. In the main text, the time that the two seated Buddhas in Wonpung-ri was created is identified as being during the 10th century. King Gwangjong created a Buddha statue for political purposes. The relief of two seated Buddha image carved on a cliff is located on an important traffic route over the Sobaek Mountain Range. After King Gwangjong took the throne, he paid close attention to the reigning powers of Jincheon and Cheongju because the people of Jincheon and Cheongju were engaged in a power struggle against Gwangjong. The huge relief of two seated Buddhas statue shows the authority of King Gwangjong. In particular, the people of Jincheon and Cheongju had to see this Buddha statue when crossing the Sobaek Mountain Range. The image contained in the relief of the two seated Buddhas features many characteristics of the sculpture style of the Balhae Kingdom. After the fall of Balhae, many of the Balhae people settled in Mungyeong. Balhae people from Mungyeong participated in the production of the relief of the two seated Buddhas. Through the relief of the two seated Buddhas, King Gwangjong wanted to show the people of Jincheon and Cheongju that the Balhae people were supporting him. The relief of two seated Buddhas reflects the historical situation of the King Gwangjong era in the late 10th century and the style of sculpture.

Antioxidant and Angiotensin Converting Enzyme I Inhibitory Activity on Different Parts of Germinated Rough Rice (발아 벼 부위별 추출물의 항산화활성과 Angiotensin Converting Enzyme I 저해활성)

  • Kim, Hyun-Young;Hwang, In-Guk;Kim, Tae-Myoung;Park, Dong-Sik;Kim, Jae-Hyun;Kim, Dae-Joong;Lee, Jun-Soo;Jeong, Heon-Sang
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.40 no.6
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    • pp.775-780
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    • 2011
  • We investigated the changes in antioxidant and angiotensin converting enzyme I (ACE) inhibitory activity in different parts of 'Ilpum' (Oryza sativa L.) rough rice before and after germination. Rough rice, either before or after germination, were separated into hull, brown rice, or sprout, and then extracted with distilled water and 70% ethanol. After germination, the total polyphenol contents of the distilled water extract of the brown rice was higher than before germination (5.84 and 1.67 mg/g, respectively). The DPPH radical scavenging activity on the unseparated rough rice ethanol extract increased from 22.95% before germination to 31.32% after germination, but it decreased in both the hull and brown rice extracts. The ABTS radical scavenging activity was highest in the sprout extract with a value of 4.41 mg AA eq/g. The reducing power of the brown rice ethanol extract increased from 0.32 before germination to 0.45 after germination. The ACE inhibitory activity of the in hull ethanol extract increased after germination. These results indicate that antioxidant capacity increases in the hull and sprout after germination could be considered having significant health benefits.

Optimal Condition for Pollen Germination of Rare and Endangered Forsythia saxatilis (희귀.멸종위기 산개나리(Forsythia saxatilis) 화분의 최적 발아 조건)

  • Han, Sim-Hee;Kang, Hye Jin;Kim, Gil Nam;Kim, Du Hyun
    • Journal of Korean Society of Forest Science
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    • v.102 no.1
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    • pp.136-142
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    • 2013
  • Optimal condition for pollen germination was suggested as a basic research of flowering physiology in order to identify the characteristics of flowering and seed setting of rare and endangered Forsythia saxatilis Nakai. Pollen samples were collected during flowering time from the end of March to the beginning of April. First, a suitable germination temperature, medium sucrose concentration and germination time were determined for pollen germination and pollen tube elongation in vitro, and then an optimal pH of culture medium. Pollen germination and tube elongation were significantly different among the levels of germination temperature, sucrose concentration and germination time. Interactive effects were observed between germination temperature and time, germination temperature and sucrose concentration, germination time and sucrose concentration. Pollen germination was the highest at $10^{\circ}C$ and increased with the increase of sucrose concentration, whereas it had no relation with germination time. In addition, pollen germination and tube elongation did not increase at more than 15% of sucrose concentration and 24 hours later. Pollen germination was the highest at pH 5 (20.8%) and the lowest at pH 6 (3.8%). In conclusion, $10^{\circ}C$, 15% sucrose and pH 5 were proposed as the optimal condition for pollen germination 24 hours later of pollen culture.