• 한국가금학회:학술대회논문집
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• 한국가금학회 2006년도 제23차 정기총회 및 학술발표회
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• pp.60-61
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• 2006

Effect of dietary salmonella lysate in broiler chicks inoculated with Salmonella typhimurium on the antioxidant system(freshness) of broiler meats during 4$^{\circ}$C refrigeration was investigated. In Pectoral and leg muscle, regardless experimental diets, as the refrigeration day passed, CuZnSOD activity decreased gradually, while at 7d MnSOD activity and peroxide level raised and then lowered at 14d. MnSOD and peroxidase activity, however, had differed according to experimental diets. The results indicated that antioxidant system of broiler meats will be changed according to experimental diets(nutrients). As the CuZnSOD, MnSOD and peroxidase activity are responsible for proteolysis of muscle protein, it was concluded that change of antioxidant system during 4$^{\circ}$C storage explain the biological activity(freshness) of broiler meats.

• 한국식품영양과학회지
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• 제38권1호
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• pp.70-75
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• 2009

연어 가공 부산물인 연어 가슴지느러미 부근 근육의 식품성분 특성에 대하여 살펴보았고, 아울러 연어 fillet 근육과 비교 검토하였다. 연어 가슴지느러미 근육의 일반성분은 수분함량이 64.4%, 조단백질 함량이 17.2%, 조지방 함량이 16.2%, 조회분 함량이 1.4%이었고, pH 및 휘발성염기질소 함량은 각각 6.73 및 7.8 mg/100 g이었으며, fillet 처리 근육을 기준으로 한 수율은 7.4%이었다. 연어 가슴지느러미 부근 근육의 TCA 가용성 질소 함량은 479 mg/100 g으로, fillet 근육의 612 mg/100 g에 비하여 낮았고, 명도, 적색도, 황색도 및 색차는 각각 54.86, 22.08, 22.41 및 52.35로, fillet 근육에 비하여 차이가 없었다. 연어 가슴지느러미 부근 근육의 아미노산 총 함량은 17.1 g/100 g이었고, 주요 아미노산은 aspartic acid, glutamic acid, leucine 및 lysine 등이었으며, 주요 구성 지방산은 16:0, 18:1n-9 및 18:2n-6, 20:5n-3 및 22:6n-3 등으로, fillet 근육의 그것과 차이가 없었다. 연어 가슴지느러미 근육의 칼슘과 인의 함량은 각각 19.1 mg/100g 및 211.7 mg/100 g이었다. 이상의 결과로 미루어 보아 연어 가슴지느러미 부근 근육은 수산가공품 재자원으로 이용 가능하리라 판단되었다.

• 한국축산식품학회지
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• 제38권5호
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• pp.835-850
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• 2018

The dramatic improvements in the growth rate and breast muscle size and yield in broilers through the intensive genetic selection, and the improvement in nutrition and management over the past 50 years have introduced serious abnormalities that influenced the quality of breast meat. The abnormalities include pale-soft-exudative (PSE) conditions, deep pectoral muscle (DPM) myopathy, spaghetti meat (SM), white striping (WS), and woody breast (WB) that have serious negative implications to the broiler meat industry. The incidences of PSE and DPM have been known for several decades, and their prevalence, etiology and economic impact have been well discussed. However, other abnormalities such as SM, WS and WB conditions have been reported just for few years although these conditions have been known for some time. The newly emerging quality issues in broilers are mainly associated with the Pectoralis major muscles, and the incidences have been increased dramatically in some regions of the world in recent years. As high as 90% of the broilers are affected by the abnormalities, which are expected to cause from $200 million to $1 billion economic losses to the U.S. poultry industry per year. So, this review mainly discusses the histopathological characteristics and biochemical changes in the breast muscles with the emphasis on the newly emerging abnormalities (SM, WS, and WB) although other abnormalities are also discussed. The impacts of the anomalies on the nutritional, functional, mechanical and sensory quality of the meat and their implications to the poultry industry are discussed.

• Asian-Australasian Journal of Animal Sciences
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• 제28권7호
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• pp.922-925
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• 2015

This study was conducted to estimate the genetic parameters for pork belly traits and muscles in Yorkshire pigs. Each pork belly was cut into nine parts perpendicular to the thoracic vertebrae (6th to 14th). Traits of belly muscles including the deep pectoral, latissimus dorsi, cutaneous trunci, rectus abdominis, external and internal abdominal oblique from 382 purebred pigs were recorded and analyzed using SAS Package (9.1) and Derivative-free restricted maximum likelihood methods. Heritability estimates for belly traits ranged from 0.27 to 0.49, while they were 0.12 to 0.66 for belly muscles. Moderate to high heritability estimates were noted in belly weight (0.33), belly length (0.28), and belly width (0.49). In belly muscles, the latissimus dorsi and deep pectoral, which are located only in the 6th to 9th vertebrae sections, were found to have heritability estimates ranging from 0.21 to 0.29 and 0.23 to 0.35, respectively. Strong heritability estimates were observed in the 7th to 13th sections of cutaneous trunci muscle ranging from 0.42 to 0.66. Genetic correlations of latissimus dorsi m. with belly length were positive (0.50), while cutaneous trunci m. with belly weight also revealed a positive relationship that ranged from 0.35 to 0.47. The estimated genetic parameters indicate that belly weight can be improved by genetic selection. Differences in the levels of heritability occurred among various parameters of Yorkshire pork belly, which should be considered when performing selection to improve pork belly quality. Moreover, these results can provide valuable information that can be used as the basis for further investigations to improve pork belly.

• 한국동물학회지
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• 제35권2호
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• pp.149-160
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• 1992

Using the protein A-gold complex, the mvoabrillogenesis and actin localization of cultured myoblast were invastisated. In the superstructural changes of mvogenic cell during differentiation, pectoral myoblasts contained large nucleus and numerous ribosomes but no myofibrils during the first 24 hr of cultures. Mvoblast initiated to differentiate at 3-day of culture contained the primitive myofibrillar structure. At 96 hr of culture, the mvofibrillar structure showed reletively discernable Z band but pools defined A, H and M bands. The feature of sarcomeric structure showed more defined form at cultur 5 day. In the aspect of actin localization, actin wvas diffusely detected throughout the cytoplasm of myogenic cell and nucleus during the proliferating stage. At 72 hr of culture, with the appearantc oi primitive mvofibrils, gold particles were observed in surrounding of myofibrils but still presented in overall of cytoplasm, especially in the surface and lumen of endoplasmic reticulum. With the gradual increase of culture time, local distribution of actin was readily detected within cytoplasm. In the 5-day specimen of cultures, gold particles precisely indicate the sites of actin localifation within the sarcomere. These results indicate the time of onset of myofibrill appearance and the biosynthetic and incorporation pathway of actin molecules into sarcomeric structure during myofibrillogenesis. Thus, in the present study, the first mvoabrillar structure was detected at culture 3 day, and the initiation of assembly into a typical sarcmeric structure was observed at culture 5 day. It seems, however, that the course of events on myofibrillogenesis of cultured myoblasts can be changed with great dependence of culture conditions including the number and groluth rate of mononucleated mvoblasts after seeding although the fundamental process shows identical appearances.

• 대한디지털의료영상학회논문지
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• 제16권2호
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• pp.25-29
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• 2014

The full-field digital mammography (FFDM), which has been known as a digital breast imaging system, carries out more outstanding performance than the screen-film mammography in overall image quality, skin & nipple, description of pectoral muscle and expression of micro-calcification. Thus, in this thesis, I perform experiments for both the enhancement of image quality and accurate estimation of the result in question, when detecting the very tiny-sized lesions in mammography. The image of digital breast X-rays is the important diagnostic tool for detecting early breast cancer and micro calcification lesion. The experiment of how much compression rate has an effect on the result of diagnosis in the case of microcalcification lesion, with JPEG2000 40:1 compression and over 50% enlargement led to obscure or definitely unacceptable diagnostic results is performed. And in another study of assessment of PSNR degree. I recognized the importance of standardized management system in mammography, where not to mention the accurate reading of the image has the most crucial role in diagnosis

• 한국어병학회지
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• 제35권2호
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• pp.247-250
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• 2022

About 6.7% mortality was reported in a starry flounder (Platichthys stellatus) aquaculture farm in 2022. Most of the diseased fish showed a loss of pectoral fin, hemorrhages on muscle and gills, pale gills, enlarged spleen, and nodules on kidney. Parasites, fungi or viruses (viral hemorrhagic septicemia virus and hirame novirhabdovirus) were not detected from diseased fish. However, numerous bacteria were isolated from liver, spleen and kidney. Nucleotide sequences of the A-protein-encoding virulence array protein gene (vapA) of the bacteria showed 99.93% identity with Aeromonas salmonicida subsp. masoucida. This study is the first report of isolation of atypical A. salmonicida in cultured starry flounder in Korea.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2011년도 춘계학술발표대회
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• pp.416-417
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• 2011

본 논문에서는 구조텐서와 모폴로지 연산을 이용한 유방 MR 영상에서 흉근을 제거하기 위한 분할 방법을 제안한다. 제안하는 방법은 영상의 그레디언트 정보를 나타내는 구조텐서와 복잡한 구조텐서를 평활화하기 위한 모폴로지 연산을 적용하여 영상 진단 및 영상 정합시 불필요한 흉근부분을 자동으로 분할하고자 한다. 실험결과에서 확인할 수 있듯이 정확한 분할의 결과는 향후 컴퓨터 보조 진단 시스템에 유용하게 사용할 수 있을 것으로 기대된다.

• Archives of Plastic Surgery
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• 제47권2호
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• pp.160-164
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• 2020

Background Implant-based dual-plane augmentation mammoplasty requires accurate separation of the pectoralis major muscle (PMM) at its origins. The authors identified the PMM origins during breast reconstruction surgery with the goal of providing additional information on subpectoral implant insertion for reconstructive or aesthetic purposes. Methods This study was conducted on 67 patients who underwent breast reconstruction surgery at the breast center of our hospital between November 2016 and June 2018. In total, 34 left and 39 right hemithoraces were examined. The left and right hemithoraces were each divided into 15 zones to determine the percentage of PMM attachments in each zone. The distribution of PMM origins in each zone was examined to identify any statistically significant differences. Results There were no statistically significant differences in the origins of the PMM between the right and left hemithoraces. The percentage of attachments increased moving from the fourth to the sixth rib and from the lateral to the medial aspect. Conclusions The anatomical findings of this study could be used as a reference for accurate dissection of the origins of the PMM for the preparation of the subpectoral pocket for subpectoral implant placement.

• 한국어류학회지
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• 제11권2호
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• pp.143-148
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• 1999

한국산 Platycephalus속 어류 2 종의 분류학적 위치관계를 면밀히 검토하기 위하여 이들의 주요 형태적 특징과 근단백질 전기영동 및 LDH, MDH isozyme 등을 분석하였다. 그 결과 가슴지느러미의 연조수에서 P. indicus 에서는 18~20개 (P. sp.에서는 16~19개), 측선 린수는 70~80개 (83~100개), 두장에 대한 안경의 비율은 10.2~13.1% (10.9~15.5%)이었고, 양안간격은 14.5~18.1% (11.8~17.8%)였으며, 이 외에도 문단의 형태, 체색 그리고 가슴 및 배지느러미의 색깔 등에서 잘 구분되었다. 한편 전기 영동상에 의한 근 단백질 band 수는 P. indicus에서 16개, P. sp.에서 18개로 분리되었다. LDH isozyme은 P. indicus에서는 2개, P. sp.에서는 1개로 나타났고, MDH isozyme은 P. indicus에서 5개, P. sp.에서 4개로 분리되었다. 이 외에도 각 band의 이동거리, 활성도 등에서도 두 종간에 상이하게 나타났었다. 따라서 한국에 서식하고 있는 양태속 어류에 속하는 P. indicus와 P. sp.는 서로 다른 종으로 간주된다.