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Ye Zhang,Yan Zhao,Hongwei Pan,Xianzhong Lang,Huili Yang,Huiliang Zhang,Huixuan Zhang,Lisong Dong 한국고분자학회 2016 폴리머 Vol.40 No.3
Polylactide (PLA) was plasticized with poly(diethylene glycol adipate) (PDEGA). The plasticized PLA was further blended with core-shell structured particles of glycidyl methacrylate-functionalized methyl methacrylate-butyl acrylate copolymer (GACR) using a twin-screw extruder, and the extruded samples were blown using the blown thin film technique. Both PDEGA and GACR significantly influenced the physical properties of the films. Compared to neat PLA, the elongation at break and tear strength of the films were significantly improved. The shear yielding induced by cavitation of GACR particles was the major tearing mechanism. GACR could act as a tear resistance modifier for PLA blown films. The spherulite size of the PLA/PDEGA/GACR films decreased with the addition of GACR. The biodegradability of the PLA/PDEGA/GACR films decreased slightly. These findings contributed new knowledge to the additive area and gave important implications for designing and manufacturing polymer packaging materials.
Ye Zhang,Muqin Tian,Jiancheng Song,XiaoYu Zhang 대한전기학회 2020 Journal of Electrical Engineering & Technology Vol.15 No.3
As the interface between new energy and power grid, the grid-connected LCL-fltered inverter plays a key role in energy conversion. However, it performs poor at rejecting grid background harmonics that distort the grid-side current and afect the quality of the output power of the inverter. Thus, a feedback strategy for the grid-side current employing the proportional integral and resonant controller (PI+HC) is used to mitigate the harmonics of the grid-side current and improves the quality of the output power of the grid-connected LCL-fltered inverter. Owing to the grid-side current feedback control system is unstable, improved High Pass Filter (HPF) active damping based on unit delay feedback is used to guarantee stability and efectiveness of PI+HC. The proposed method for mitigating grid-side current harmonics is validated by a detailed simulation and the results of experiments.
Fast Detection of Mura Defects Based on Modified Watershed Algorithm
Ye Jian Zhang(장엽검),Hyonam Joo(주효남),Joon Seek Kim(김준식) 제어로봇시스템학회 2017 제어·로봇·시스템학회 논문지 Vol.23 No.6
Many kinds of defects show up during the process of manufacturing display panels. However, mura defects are the most difficult to detect using the conventional image processing algorithms. Many factors cause mura defects to appear in display panels. When images are taken using cameras, mura defects normally show up as relatively dark or bright regions with no definite shape, no clear contours, and very low contrast against their surrounding background. When an imaged mura defect is relatively dark compared to its background, it can be considered a water catchment basin when the whole image is visualized in three dimensions (i.e., is topographically interpreted), and such catchment basins can be detected by watershed algorithms. In this paper, for the accurate segmentation of the mura region, the flooding step of the original watershed algorithm is carefully redesigned to detect the mura defect that exists both inside and at the boundary of an image. The depth of the catchment basins is recorded iteratively and then is used to segment the mura defects. The just noticeable difference (JND) technique is used to quantify the level of the mura defects. It is shown, by extensive experiments, that the proposed algorithm performs well, detecting very low-contrast mura defects, and quickly detects defects located anywhere in the image.
Ye-Hui Zhang,Li-Hua Huang 한국식품과학회 2014 Food Science and Biotechnology Vol.23 No.5
The effects of heat-induced rice bran protein(RBP) fibrils on structure and properties of solutions and gelsin a complex system were investigated using transmissionelectron microscopy (TEM), atomic force microscopy(AFM), Congo red spectral analysis, and circular dichroism(CD). Planar and 3-dimensional images of RBP fibrils allrevealed structural details. A Congo red spectral shiftindicated fibril formation. Fibril secondary structuralcomponents exhibited differences at pH 2.0 and pH 7.0. The β-type was decreased with an increased pH. Rheological results exhibited shear thinning behavior forall solutions. Addition of fibrils to RBP solutions, whichmade the system complex, resulted in an order of magnitudeincrease in viscosity and shear stress. Adding fibrils toRBP solutions accelerated the kinetics of gel formation,resulting in an increase in gel strength. Scanning electronmicroscopy (SEM) images showed gel network structuraldifferences with and without fibrils at different pH values.
Association of Six Susceptibility Loci with Prostate Cancer in Northern Chinese Men
Zhang, Yu-Rong,Xu, Yong,Yang, Kuo,Liu, Ming,Wei, Dong,Zhang, Yao-Guang,Shi, Xiao-Hong,Wang, Jian-Ye,Yang, Fan,Wang, Xin,Liang, Si-Ying,Zhao, Cheng-Xiao,Wang, Fei,Chen, Xin,Sun, Liang,Zhu, Xiao-Quan,Zh Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.12
Background/Aim: Six prostate cancer (PCa) susceptibility loci were identified in a genome-wide association study (GWAS) in populations of European decent. However, the associations of these 6 single-nucleotide polymorphisms (SNPs) with PCa has remained tobe clarified in men in Northern China. This study aimed to explore the loci associated with PCa risk in a Northern Chinese population. Methods: Blood samples and clinical information of 289 PCa patients and 288 controls from Beijing and Tianjin were collected. All risk SNPs were genotyped using polymerase chain reaction (PCR)-high resolution melting curve technology and gene sequencing. Associations between PCa and clinical covariates (age at diagnosis, prostate-specific antigen [PSA], Gleason score, tumor stage, and level of aggressiveness) and frequencies of alleles and genotypes of these SNPs were analyzed using genetic statistics. Results: Among the candidate SNPs, 11p15 (rs7127900, A) was associated with PCa risk (P = 0.02, odds ratio [OR] = 1.64, 95% confidence interval [CI] = 1.09-2.46). Genotypes showed differences between cases and controls on 11p15 (rs7127900, A), 11q13 (rs7931342, T), and HNF1B (rs4430796, A) (P = 0.03, P = 0.01, and P = 0.04, respectively). The genotype TG on 11q13 (rs7931342, T) was positively associated with an increased Gleason score (P = 0.04, OR = 2.15, 95% CI = 1.02-4.55). Patients carrying TG on 17q24 (rs1859962, G) were negatively associated with an increased body mass index (BMI) (P = 0.03, OR = 0.44, 95% CI = 0.21-0.92) while those with AG on HNF1B (rs4430796, A) were more likely to have PSA increase (P = 0.002). Conclusion: Our study suggests that 11p15 (rs7127900, A) could be a susceptibility locus associated with PCa in Northern Chinese. Genotype TG on 11q13 (rs7931342, T) could be related to an increased Gleason score, AG on HNF1B (rs4430796, A) could be associated with PSA increase, and TG on 17q24 (rs1859962, G) could be negatively associated with an increased BMI in Chinese men with PCa.
Research on the Chinese Folk Dress “Wu Du” Bellyband
Zhang, Shunai;Ye, Junli 한양대학교 2012 韓國 生活 科學 硏究 Vol.32 No.1
The bellyband(Refers to the Chinese traditional underwear: 中国传统内衣) with "WuDu" motifs is the unique Chinese folk dress. Snake, centipede, scorpion, gecko, spider, toad (frog) or lizard will be used as motifs on the WuDu bellyband in the folk. We will analyze the WuDu bellyband from the pattern characteristics, modeling and structure, color collocation, manufacturing process and cultural connotation in this paper. Through the study we found that WuDu bellyband is particular in content, the modeling is exaggerated and various, and the color is seemed harmonious and united, embroidered methods and shapes are various. WuDu bellyband was full of wishes of people that hoping their children keep healthy and they can multiply generation by generation. It also express the wisdom and yearning for a better life of the Chinese labor. WuDu bellyband can be considered as the traditional dress which merged the practicality, wish and aesthetic into one.
Risk of Treatment-related Mortality with Sorafenib in Patients with Cancer
Zhang, Xin-Ji,Zhang, Tian-Yi,Yu, Fei-Fei,Wei, Xin,Li, Ye-Sheng,Xu, Feng,Wei, Li-Xin,He, Jia Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.11
Background: Fatal adverse events (FAEs) have been reported with sorafenib, a vascular endothelial growth factor receptor kinase inhibitor (VEGFR TKI). We here performed an up-to-date and detailed meta-analysis to determine the overall risk of FAEs associated with sorafenib. Methods: Databases, including PubMed, Embase and Web of Science, and abstracts presented at the American Society of Clinical Oncology annual meetings were searched to identify relevant studies. Eligible studies included randomized controlled trials evaluating sorafenib effects in patients with all malignancies. Summary incidence rates, relative risks (RRs), and 95% confidence intervals (CIs) were calculated for FAEs. In addition, subgroup analyses were performed according to tumor type and therapy regimen. Results: 13 trials recruiting 5,546 patients were included in our analysis. The overall incidence of FAEs with sorafenib was 1.99% (95%CI, 0.98-4.02%). Patients treated with sorafenib had a significantly increased risk of FAEs compared with patients treated with control medication, with an RR of 1.77 (95%CI 1.25-2.52, P=0.001). Risk varied with tumour type, but appeared independent of therapy regimen. A significantly increased risk of FAEs was observed in patients with lung cancer (RR 2.26; 95% CI 1.03-4.99; P= 0.043) and renal cancer (RR 1.84; 95% CI 1.15-2.94; P= 0.011). The most common causes of FAEs were hemorrhage (8.6%) and thrombus or embolism (4.9%). Conclusions: It is important for health care practitioners to be aware of the risks of FAEs associated with sorafenib, especially in patients with renal and lung cancer.