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Sumin Song,Huilin Cheng,Eun-Young Jung,Seon-Tea Joo,Gap-Don Kim 한국축산식품학회 2020 한국축산식품학회지 Vol.40 No.6
The influence of muscle architecture on muscle fiber characteristics and meat quality has not been fully elucidated. In the present study, muscle fiber characteristics on the chop surface of pork loin (M. longissimus thoracis et lumborum, LTL), pennation angle degree, and meat quality were evaluated to understand the pork LTL architecture and its relationship with the loin chop quality. Muscle fiber pennation degree ranged from 51.33° to 69.00°, resulting in an ellipse-shaped muscle fiber on the surface of pork loin chop. The cross-sectional area (CSA) on the sections cut vertical to the muscle length (M-Vertical) was considerably larger (p<0.05) than that on the sections cut vertical to the muscle fiber orientation (F-Vertical) regardless of the fiber type. Pennation angle is positively correlated with CSAs of F-Vertical (p<0.05) and with Warner-Bratzler shear force (r=0.53, p<0.01). Besides the shear force, lightness and pH were positively correlated with the fiber composition and CSA of IIX fiber (p<0.05); however, the redness, yellowness, drip loss, and cooking loss were not correlated with the pennation angle and muscle fiber characteristics on the chop surface (p>0.05). These observations might help us in better understanding pork loin architecture and the relationship between the pennation angle, muscle fiber characteristics, and meat quality of pork loin chop.
Song, Jin-Hee,Jin, Hye-Sun,Jeong, Su-Gwang,Kim, Sumin,Song, Seung-Yeong,Lim, Jae-Han Hindawi Limited 2017 International journal of polymer science Vol.2017 No.-
<P>To increase the heat capacity in lightweight construction materials, a phase change material (PCM) can be introduced to building elements. A thermally activated building system (TABS) with graphite/PCM concrete hollow core slab is suggested as an energy-efficient technology to shift and reduce the peak thermal load in buildings. An evaluation of heat storage and dissipation characteristics of TABS in graphite/PCM concrete has been conducted using dynamic simulations, but empirical validation is necessary to acceptably predict the thermal behavior of graphite/PCM concrete. This study aimed to validate the thermal behavior of graphite/PCM concrete through a three-dimensional transient heat transfer simulation. The simulation results were compared to experimental results from previous studies of concrete and graphite/PCM concrete. The overall thermal behavior for both materials was found to be similar to experiment results. Limitations in the simulation modeling, which included determination of the indoor heat transfer coefficient, assumption of constant thermal conductivity with temperature, and assumption of specimen homogeneity, led to slight differences between the measured and simulated results.</P>
Sumin Song,Chi-Hoon Ahn,Gap-Don Kim 한국축산식품학회 2020 한국축산식품학회지 Vol.40 No.1
The aim of this study was to optimize staining procedures for muscle fiber typing efficiently and rapidly in bovine and porcine skeletal muscles, such as longissimus thoracis, psoas major, semimembranosus, and semitendinosus muscles. The commercially available monoclonal anti-myosin heavy chain (MHC) antibodies and fluorescent dyeconjugated secondary antibodies were applied to immunofluorescence histology. Two different procedures, such as cocktail and serial staining, were adopted to immunofluorescence analysis. In bovine muscles, three pure types (I, IIA, and IIX) and one hybrid type, IIA+IIX, were identified by the cocktail procedure with a combination of BA-F8, SC-71, BF-35, and 6H1 anti-MHC antibodies. Porcine muscle fibers were typed into four pure types (I, IIA, IIX, and IIB) and two hybrid types (IIA+IIX and IIX+IIB) by a serial procedure with a combination of BA-F8, SC-71, BF-35, and BF-F3. Unlike for bovine muscle, the cocktail procedure was not recommended in porcine muscle fiber typing because of the abnormal reactivity of SC-71 antibody under cocktail procedure. Within the four antibodies, combinations of two or more anti-MHC antibodies allowed us to distinguish pure fiber types or all fiber types including hybrid types. Application of other secondary antibodies conjugated with different fluorescent dyes allowed us to get improved image resolution that clearly distinguished hybrid fibers. Muscle fiber characteristics differed depending on species and muscle types.
( Sumin Oh ),( Hyun Hoon Chung ),( Jae Weon Kim ),( Yong Sang Song ),( Noh Hyun Park ),( Yoo Kyung Lee ) 대한산부인과학회 2012 대한산부인과학회 학술대회 Vol.99 No.-
Objective: Despite the good prognosis of borderline ovarian tumors (BOTs), a few BOT patients experience the relapse of disease. Among them, some reveal the cancerous disease, however, the risk of malignant transformation of BOT is usually thought to be unclear. We intended to find out the specific characteristics and prognosis of cancerous recurrence from BOTs. Methods: Between 1995 and 2012, 130 women were diagnosed with BOTs in our institution. Seven patients diagnosed and treated for cancerous recurrence of BOTs were included for analysis in this retrospective study. Clinicopathological characteristics and surgical procedure as well as follow-up data with overall survival were assessed. Statistical analyses included the χ2 test, t-test and Log-rank test with Cox regression. Result: One hundred and thirty patients with mean follow-up of 65.8 months (range, 1 to 241 months) were evaluated, of whom half were below 40 years-old at their first diagnosis of BOTs and 53.8% received conservative surgery. In our cohort, mucinous pathologic type was the most common one (66.9%). Among 11 patients who were diagnosed relapse of BOTs (8.5%), seven cancerous transformations were detected (5.4%) with median time of 9 months (range, 1 to 54 months). All cancerous relapses arose from premenopausal women of median age of 35 years old. Tumor size and tumor markers level (CA-125 and CA 19-9) did not show any predictive value for the malignant transformation of BOTs. Laparoscopic approach and conservative surgery were revealed that had no significant influence on relapse and overall survival (p=0.602, p=0.543). The median survival time of cancerous recurrent cases is 9 months (range, 3 to 31 months). Among them, four died of recurrent disease (ovarian cancer) and the other 3 has been reached complete remission. Conclusion: Minimal invasive conservative surgery for BOTs can be accepted under close follow-ups. However, survival rate of disease can be expected to be poor if malignant transformation of BOTs occurred.