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Yibo Zhao,Zhengdao Lu 보안공학연구지원센터 2016 International Journal of Signal Processing, Image Vol.9 No.4
As new information carrier, multimedia brings significant changes to people's daily work, study and life. In order to promote the development of modern education, multimedia network teaching platform has been widely used to realize the modernization and informationization of education. In this paper, we analyze the how multimedia network teaching platform will influence on physical education teaching. From the results of teaching experiment, students who using network multimedia aided teaching system get more scores than control group, this means that network multimedia aided teaching will help student to master the technical movements. From questionnaire results, the multimedia teaching system improve the students' learning interest, and will cultivate students' ability to discover problems and solve problems. In conclusion, the traditional teaching should be combined with the network multimedia aided teaching, so that to achieve better teaching effect.
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Yibo Zhao,Moses Arowo,Wei Wu,Haikui Zou,Jianfeng Chen,Guangwen Chu 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.25 No.-
Polyaniline/graphene (PANI/GN) nanocomposites were synthesized by in situ high gravity chemical oxidative polymerization in a rotating packed bed (RPB). The effects of graphene dosage, ammonium persulfate/aniline mole ratio, aniline concentration and reactor type on their morphology and electrochemical performances were discussed in detail. Results indicated that this process can synthesize PANI/GN nanocomposites easily under relatively extensive conditions. Particularly, it was demonstrated that it is appropriate for higher aniline concentration condition, which is favorable for large scale production. Furthermore, RPB produced PANI/GN nanocomposites of more uniform morphology and thinner coating than those synthesized in a stirred tank reactor (STR). These advantages resulted in nanocomposites of higher specific capacitance of up to 403 F/g as compared to 255 F/g for those of STR at 0.5 A/g. This process is not only simple and efficient, but also has a good prospect for industrial application.
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Heng Jin,Wei Wei,Yibo Zhao,Ai Ma,Keke Sun,Xiaoxi Lin,Qihui Liu,Songtao Shou,Yan Zhang 대한신장학회 2023 Kidney Research and Clinical Practice Vol.42 No.6
Background: The aim of this study was to evaluate the roles of interleukin (IL)-17A in risk stratification and prognosis of patients with sepsis-associated acute kidney injury (SAKI). Methods: We enrolled 146 sepsis patients (84 non-SAKI and 62 SAKI patients) admitted to the emergency department from November 2020 to November 2021. Patients with SAKI were differentiated based on the severity of acute kidney injury. All clinical parameters were evaluated upon admission before administering antibiotic treatment. Inflammatory cytokines were assessed using flow cytometry and the Pylon 3D automated immunoassay system (ET Healthcare). In addition, a receiver operating characteristic (ROC) curve was utilized to determine the prognostic values of IL-17A in SAKI. Results: The levels of creatinine, IL-2, IL-4, IL-6, IL-17A, tumor necrosis factor alpha, C-reactive protein, and procalcitonin (PCT) were significantly higher in the SAKI group than in the non-SAKI group (p < 0.05). The level of IL-17A revealed significant differences among stages 1, 2, and 3 in SAKI patients (p < 0.05). The mean levels of PCT, IL-4, and IL-17A were significantly higher in the non-survival group than in the survival group in SAKI patients (p < 0.05). In addition, the area under the ROC curve of IL-17A was 0.811. Moreover, the IL-17A cutoff for differentiating survivors from non-survivors was 4.7 pg/mL, of which the sensitivity and specificity were 77.4% and 71.0%, respectively. Conclusion: Elevated levels of IL-17A could predict that SAKI patients are significantly prone to worsening kidney injury with higher mortality. The usefulness of IL-17A in treating SAKI requires further research.
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Synthesis and characterizations of graphene–copper nanocomposites and their antifriction application
Xueshan Li,Guangwen Chu,Wei Wu,Yibo Zhao,Jianfeng Chen,Haikui Zou 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.4
In this work, a facile one-pot reduction method was used to prepare graphene–copper nanocomposites using graphite oxide and copper sulfate. The nanocomposites were characterized by transmission electron microscope, X-ray diffraction, Raman spectrum, thermal gravimetric analysis, UV–vis analysis and Fourier transform infrared spectrum. It was found that the as-synthesized graphene sheets have few layers and less defects with oxygen functional group on it. The copper nanoparticles with an average diameter of 20 nm were uniformly deposited on the graphene sheets. The aggregation of the copper nanoparticles was effectively prevented. The nanocomposites can evenly disperse in base oil. The antifriction performance of the base oil added with GNS–Cu was firstly investigated. It was found that the GNS–Cu nanocomposites as additive in proper ratio showed better antifriction properties with an improvement of the load-carrying capacity by 50%.
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Cuihua Xin,Ruikun Hou,Fei Wu,Yibo Zhao,Huanhuan Xiao,Wantong Si,Md Emran Ali,Lu Cai,Jiangbo Guo 한국식물학회 2015 Journal of Plant Biology Vol.58 No.6
China is the leading producer of potatoes (Solanum tuberosum) in the world. However, low-temperature stress can severely restrict the yield and quality of potato crops in that country. We used methylation-sensitive amplified polymorphisms (MSAPs) to analyze how such stress might alter the status of cytosine methylation in potato cultivar ‘Atlantic’. Over 2400 loci were identified and assessed for DNA methylation in chilling-treated and control plants. The level of cytosine methylation increased from 37.71% to 56.51% after 48 h of treatment but then decreased to 42.14% after 60 h of chilling. Stress-induced changes in the banding patterns of DNA methylation primarily resulted from full methylation of CG (internal cytosine of 5’-CCGG-3’) on double DNA strands. We sequenced 78 polymorphic DNA fragments and blasted them against NCBI. Expression patterns of 4 genes were then assessed via semi-quantitative RT-PCR. The expression patterns of genes related to chilling stress appeared to be regulated by the methylation or demethylation status in potato.
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Low-loss carrier-stored IGBT with p-type Schottky diode-clamped shielding layer
Yi, Bo,Zhao, Qing,Zhang, Qian,Cheng, JunJi,Huang, HaiMeng,Pan, YiLan,Hu, XiaoRan,Xiang, Yong The Korean Institute of Power Electronics 2021 JOURNAL OF POWER ELECTRONICS Vol.21 No.8
A novel carrier-stored trench bipolar transistor (CSTBT) with heavily doped carrier-stored layer (CSL) is proposed and investigated by TCAD tools. The voltage of CSL is shielded by a buried p-type layer (P-bury) whose potential is clamped by a p-type Schottky Barrier Diode (pSBD) in series-connection with a PN diode. Hence, the CSL can be heavily doped, and the trade-off between on-state voltage drop (V<sub>on</sub>) and turn-off loss (E<sub>off</sub>) is substantially improved. Compared with that of a conventional CSTBT with floating P-base (FP-CSTBT), the E<sub>off</sub> of the proposed CSTBT is reduced by 27.9% at V<sub>on</sub>=1.1 V. Owing to the shielding effect of the P-bury layer, the saturation current density of the proposed CSTBT is reduced by 52% compared with that of the FP-CSTBT. Consequently, significantly enlarged short-circuit safe operation area is obtained, and the short-circuit withstand time (t<sub>sc</sub>) is increased to 12.8 s at ultra-low V<sub>on</sub> (~1.1 V).
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