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Predicting the Anthocyanin Content of Kyoho Grapes by Nir Spectroscopy
( Si-yun Wang ),( Suming Chen ),( Chao-yin Tsai ),( Han-chun Hsu ),( Yung-huei Chang ) 한국농업기계학회 2018 한국농업기계학회 학술발표논문집 Vol.23 No.1
Kyoho grapes are in dark purple color. Anthocyanin plays a major role on the colors of berries, and contains antioxidant, anti-inflammatory, anticancer substance. The method of inspecting Anthocyanins so far is by either visual or destructive technique of using chemicals, but these methods could not carry out real-time accurate inspection. The aim of this study was to demonstrate the feasibility of non-destructive inspection in predicting Anthocyanin content by near-infrared spectroscopy. This study used the NIRS 6500 spectrometer ranged from 400 to 2500 nm. The prediction model of Anthocyanin content of Kyoho grapes was established by near-infrared spectroscopy and concentration of Anthocyanin. The results of this study showed the reliability and feasibility of near-infrared spectroscopy on predicting the Anthocyanin content of grapes. In the future, the Anthocyanin content can be quickly predicted by spectroscopic techniques.
( Yun Qiang Liu ),( Mei Ling Wang ),( Si Yuan Jiang ),( Yong Jie Lu ),( Da Chang Tao ),( Yuan Yang ),( Yong Xin Ma ),( Si Zhong Zhang ) 생화학분자생물학회 2014 BMB Reports Vol.47 No.2
Tissue-specific gene expression is regulated by epigenetic modification involving trans-acting factors. Here, we identified that the human MAGEB16 gene and its mouse homolog, Mageb16, are only expressed in the testis. To investigate the mechanism governing their expression, the promoter methy-lation status of these genes was examined in different samples. Two CpG islands (CGIs) in the 5` upstream region of MAGEB16 were highly demethylated in human testes, whereas they were methylated in cells without MAGEB16 expression. Similarly, the CGI in Mageb16 was hypomethylated in mouse testes but hypermethylated in other tissues and cells without Mageb16 expression. Additionally, the expression of these genes could be activated by treatment with the demethylation agent 5`-aza-2`- deoxycytidine (5`-aza-CdR). Luciferase assays revealed that both gene promoter activities were inhibited by methylation of the CGI regions. Therefore, we propose that the testis-specific expression of MAGEB16 and Mageb16 is regulated by the methylation status of their promoter regions. [BMB Reports 2014; 47(2): 86-91]
Wang, Xun,Ji, Sang Chun,Yun, Sang Hoon,Jeon, Heung Jin,Kim, Si Wouk,Lim, Heon M. American Society for Microbiology 2014 Journal of Bacteriology Vol.196 No.14
<P>The <I>gal</I> operon of <I>Escherichia coli</I> has 4 cistrons, <I>galE</I>, <I>galT</I>, <I>galK</I>, and <I>galM</I>. In our previous report (H. J. Lee, H. J. Jeon, S. C. Ji, S. H. Yun, H. M. Lim, J. Mol. Biol. <B>378:</B>318–327, 2008), we identified 6 different mRNA species, mE1, mE2, mT1, mK1, mK2, and mM1, in the <I>gal</I> operon and mapped these mRNAs. The mRNA map suggests a gradient of gene expression known as natural polarity. In this study, we investigated how the mRNAs are generated to understand the cause of natural polarity. Results indicated that mE1, mT1, mK1, and mM1, whose 3′ ends are located at the end of each cistron, are generated by transcription termination. Since each transcription termination is operating with a certain frequency and those 4 mRNAs have 5′ ends at the transcription initiation site(s), these transcription terminations are the basic cause of natural polarity. Transcription terminations at <I>galE-galT</I> and <I>galT-galK</I> junctions, making mE1 and mT1, are Rho dependent. However, the terminations to make mK1 and mM1 are partially Rho dependent. The 5′ ends of mK2 are generated by an endonucleolytic cleavage of a pre-mK2 by RNase P, and the 3′ ends are generated by Rho termination 260 nucleotides before the end of the operon. The 5′ portion of pre-mK2 is likely to become mE2. These results also suggested that <I>galK</I> expression could be regulated through mK2 production independent from natural polarity.</P>
가열방법에 따른 중방식 도장계의 표면상태 변화에 관한 실험적 연구
송시윤 ( Song Si-yun ),옹왕치 ( Weng Wang-chi ),차기혁 ( Cha Ki-hyuk ),김인태 ( Kim In-tae ) 한국구조물진단유지관리공학회 2021 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.25 No.2
강교량을 이루고 있는 강재 부재는 화재와 부식 손상에 취약하다. 대부분의 강교에는 부식을 방지하고 미관을 향상시키기 위해 표면에 도장이 되어있는데, 화재가 발생하면 먼저 도장에 손상이 일어나고 강재에 손상이 발생한다. 본 연구는 화재 후 강재의 수열온도 추정법 개발에 있어, 가열방법에 따른 차이를 확인하기 위해 표준시방서(KCS 14 31 40 : 2016 도장)의 강교 중방식도장계를 대상으로 가열온도 100, 200, 300, 400, 500, 600, 700°C와 가열지속시간 30분의 소규모화재 모사실험을 진행하였다. 그리고 가열 후 도장표면의 상태평가와 색차, 광택을 측정하였다. 그 결과 전기로 가열방법과 가스로 가열방법 모두 300℃에서는 변색 되었으며, 400℃에서는 박리와 부풀음이, 500℃에서는 도장이 전면 박리 되었으며, 전기로와 가스로의 가열방법 차이에 의한 표면상태 변화, 변색 및 광택 변화의 현저한 차이는 발생하지 않았다.
Tian-Mei Si,Yun-shu Zhang,Liang Shu,Ke-Qing Li,Xie-He Liu,Qi-Yi Mei,Gao-Hua Wang,Pei-Shen Bai,Li-Ping Ji,Xian-Sheng Cheng,Cui Ma,Jian-Guo Shi,Hong-Yan Zhang,Hong Ma,Xin Yu 대한정신약물학회 2012 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.10 No.2
Objective: Clozapine is one of the most commonly used antipsychotic drugs in China. To date, few studies have investigated the patterns the prescription of clozapine nationwide. The present study examined these patterns in China in 2006 and identified the demographic and clinical characteristics associated with the use of clozapine. Methods: Using a standardized protocol and data collection procedure, we surveyed 5,898 patients with schizophrenia in 10provinces with differing levels of economic development. Results: Overall, clozapine had been prescribed for 31.9% (n=1,883) of the patients; however we found considerable variation among the 10 provinces. The frequency of clozapine use was highest in Sichuan (39.3%) and lowest in Beijing (17.3%). The mean daily dose of clozapine was 210.36±128.72 mg/day, and 25.1% of the patients were treated with clozapine in combination with other antipsychotics. Compared with the group not receiving clozapine, clozapine-user had been treated for longer durations and had experienced a greater number of relapses and hospitalizations. Furthermore, those in the clozapine-user had lower family incomes, were less able to seek psychiatric services, and more likely to be male and have a positive family history of schizophrenia. A multiple logistic regression analysis revealed that age, sex, professional help-seeking behaviors, duration of illness, economic status, educational level, and clinical manifestations were associated with the use of clozapine. Conclusion: Clozapine use is common in China. However, use of the antipsychotic varies among provinces, and demographic and clinical factors play important roles in the prescription of clozapine.
옹왕치 ( Weng Wang-chi ),송시윤 ( Song Si-yun ),차기혁 ( Cha Ki-hyuk ),김인태 ( Kim In-tae ) 한국구조물진단유지관리공학회 2021 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.25 No.2
강재의 역학적 성능은 다른 재료보다 우수하지만, 부식 및 화재 손상에 취약하다. 강재는 부식을 방지하기 위하여 주로 도장 표면 처리되어 있는데, 강교에 화재가 발생하면 화재 온도에 따라 강교의 내하력에 영향을 미칠 수 있어 강교의 화재 피해정도를 알아보기 위해서는 신속한 수열온도를 파악하는 것이 중요하다. 본 연구에서는 강교의 수열온도를 추정하기 위하여 가스로를 이용하여 표준시방서(KCS 14 31 40 : 2016 도장)의 강교 일반중방식 도장계를 대상으로 가열 온도 200, 300, 400, 500, 600℃와 가열 지속시간 30분간의 가열실험을 실시하였다. 그 결과 일반중방식 도장계의 표면 상태평가를 통해 강교의 수열온도를 추정할 수 있음을 확인하였다.
Ya-Nan Jin,Wang-Jian Zhang,Xiu-Yu Cai,Mei-Su Li,Wayne R. Lawrence,Si-Yang Wang,Dong-Mei Mai,Yu-Yun Du,Dong-Hua Luo,Hao-Yuan Mo 대한암학회 2019 Cancer Research and Treatment Vol.51 No.1
Purpose We aim to examine nasopharyngeal carcinoma (NPC) characteristics and survival outcomes in patients aged 70 years and older in the intensity-modulated radiotherapy (IMRT) era. Materials and Methods From 2006 to 2013, 126 non-metastatic NPC patients aged 70 years who were treated with IMRT +/ chemotherapy were included. Adult Comorbidity Evaluation 27 (ACE-27) was used to measure patient comorbidities. The overall survival (OS) and cancer-specific survival (CSS) were calculated with the Kaplan-Meier method, and differences were compared using the log-rank test. The Cox proportional hazards model was used to carry out multivariate analyses. Results For the entire group, only two patients (1.6%) presented stage I disease, and up to 84.1% patients had stage III-IVB disease. All patients had a comorbidity score of 0 in 24 (19.0%), 1 in 45 (35.7%), 2 in 42 (33.3%), and 3 in 15 (11.9%) patients. The main acute grade during radiotherapy was 3-4 adverse events consisting of mucositis (25.4%), bone marrow suppression (16.7%), and dermatitis (8.7%). After treatment, four patients (3.2%) developed temporal lobe injury. Five-year CSS and OS rates were 67.3% (95% confidence interval [CI], 58.6% to 77.4%) and 54.0% (95% CI, 45.6% to 63.9%), respectively. Five-year OS was significantly higher for ACE-27 score 0-1 than ACE-27 score 2-3 (72.9% and 39.9%, respectively; p < 0.001). Multivariate analyses showed ACE-27 score 0-1 was significantly associated with superior OS (hazard ratio [HR], 3.02; 95% CI, 1.64 to 5.55; p < 0.001). In addition, the rate of OS was higher for stage I-III than that of stage IV, with borderline significance (HR, 1.67; 95% CI, 0.99 to 2.82; p=0.053). But no significant advantage was observed in OS when chemotherapy was used (p > 0.05). Conclusion Our findings suggest IMRT +/– chemotherapy has a manageable toxicity and provides an acceptable survival in patients aged 70 years with NPC. ACE-27 score was significantly associated with survival outcomes in this group population.
Fei Han,Zhen Qian,Yun Wang,Xiu-Kun Wang,Si-chao Mu,Shi-Chao Ding 한국정밀공학회 2023 International Journal of Precision Engineering and Vol.24 No.2
Chain-die forming is a new sheet metal forming process, which can be used to produce complex and variable cross-section UHSS automotive structural parts. In this paper, the web-warping and the longitudinal strain developed in the sheet metal during the chain-die forming process are investigated by the finite element analysis, and the accuracy of the model is verified by the experimental work by comparing the longitudinal strain of the product with a forming angle of 60°. The reasons for web-warping in chain-die forming and the effects of different process parameters on web-warping are analyzed. The results show that the side leg height has the most significant effect on the longitudinal strain development, followed by material strength, sheet metal thickness and turning radius. Likewise, the linear regression model confirms that the material strength has the most significant effect on the web-warping height while the forming angle and side leg height have less influence during chain-die forming variable cross-section profile.