• Title/Summary/Keyword: Chinese engineering

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Study on the Anti-hypertension mechanism of Prunella Vulgaris based on entity grammar systems

  • Du, Li;Li, Man-man;Zhang, Bai-Xia;He, Shuai-Bing;Hu, Ya-Nan;Wang, Yun
    • CELLMED
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    • v.5 no.4
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    • pp.27.1-27.6
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    • 2015
  • Literatures and experimental studies have shown that Prunella has an effect on anti-hypertension, however, its components are complicated, so that it is still difficult to clear the specific roles of its various components in blood pressure regulation in. So we decide to systematically study the anti-hypertension mechanism of Prunella. We integrated multiple databases and constructed molecular interaction network between the chemical constituents of Prunella Vulgaris and hypertension based on entity grammar systems model. The network has 262 nodes and 802 edges. Then we infer the interactions between chemical compositions and disease targets to clarify the anti-hypertension mechanism. Finally, we found Prunella could influence hypertension by regulating apoptosis, cell proliferation, blood vessel development and vasoconstriction, etc. Thus this study provides reference for drug development and compatibility, and also gives guidance for health care at a certain extent.

A Thermal Model for Electrothermal Simulation of Power Modules

  • Meng, Jinlei;Wen, Xuhui;Zhong, Yulin;Qiu, Zhijie
    • Journal of international Conference on Electrical Machines and Systems
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    • v.2 no.4
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    • pp.441-446
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    • 2013
  • A thermal model of power modules based on the physical dimension and thermal properties is proposed in this paper. The heat path in the power module is considered as a one-dimensional heat transfer in the model. The method of the parameters extraction for the model is given in the paper. With high speed and accuracy, the thermal model is suit for electrothermal simulation. The proposed model is verified by experimental results.

Active control of amplitude and phase of high-power RF systems in EAST ICRF heating experiments

  • Guanghui Zhu;Lunan Liu;Yuzhou Mao;Xinjun Zhang;Yaoyao Guo;Lin Ai;Runhao Jiang;Chengming Qin;Wei Zhang;Hua Yang;Shuai Yuan;Lei Wang;Songqing Ju;Yongsheng Wang;Xuan Sun;Zhida Yang;Jinxin Wang;Yan Cheng;Hang Li;Jingting Luo
    • Nuclear Engineering and Technology
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    • v.55 no.2
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    • pp.595-602
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    • 2023
  • The EAST ICRF system operating space has been extended in power and phase control with a low-level RF system for the new double-strap antenna. Then the multi-step power and periodic phase scanning experiment were conducted in L-mode plasma, respectively. In the power scanning experiment, the stored energy, radiation power, plasma impedance and the antenna's temperature all have positive responses during the short ramp-ups of PL;ICRF. The core ion temperature increased from 1 keV to 1.5 keV and the core heating area expanded from |Z| ≤ 5 cm to |Z| ≤ 10 cm during the injection of ICRF waves. In the phasing scanning experiment, in addition to the same conclusions as the previous relatively phasing scanning experiment, the superposition effect of the fluctuation of stored energy, radiation power and neutron yield caused by phasing change with dual antenna, resulting in the amplitude and phase shift, was also observed. The active control of RF output facilitates the precise control of plasma profiles and greatly benefits future experimental exploration.

Molecular Characterization and Expression Patterns of Porcine Eukaryotic Elongation Factor 1 A

  • Wang, H.L.;Wang, H.;Zhu, Z.M.;Yang, S.L.;Fen, S.T.;Li, Kui
    • Asian-Australasian Journal of Animal Sciences
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    • v.19 no.7
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    • pp.953-957
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    • 2006
  • The eukaryotic elongation factor 1 A (EEF1A) participates in protein synthesis by forming the eEF1A GTP tRNA complex to deliver aminoacyl-tRNA to the A site of ribosomes. This study described cDNA sequences and partial genomic structure of porcine EEF1A1. The porcine EEF1A1 gene encoded a protein with 462 amino acids, which shared complete homology with human, chimpanzee and dog. The temporal expression pattern showed the diversity of EEF1A1 level in mRNA was relatively minor in prenatal embryo skeletal muscle, however, the expression decreased during aging after birth in skeletal muscle of the Chinese Tongcheng pig. The spatial expression patterns indicated that the gene expressed in skeletal muscle, heart, lung, liver, kidney, fat and spleen. In addition, we assigned the gene to porcine chromosome 1 using a radiation hybrid panel.

A Comparative Analysis of the Safety Awareness of Korean and Chinese Construction Workers

  • Zhang, Zhen;An, Sung-Hoon
    • Journal of the Korea Institute of Building Construction
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    • v.12 no.4
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    • pp.433-441
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    • 2012
  • Accompanied by Chinese strong economic growth rates and development of demand for the construction industry, Chinese construction industry has already become one of the largest construction markets in the world. Unfortunately, the frequent occurrence of safety incidents on Chinese construction sites is a large obstacle for other countries construction companies seeking to enter the Chinese construction market. This study aims to analyze and compare the safety awareness of Chinese and Korean construction workers. Our research showed that the safety awareness of Korean construction workers is far higher than that of their Chinese counterparts, particularly in terms of the efficiency of safety education and the observance of safety rules. The development of a safety management plan based on these results will contribute to reducing the frequency of accidents on Chinese construction sites.

Investigation on moisture migration of unsaturated clay using cross-borehole electrical resistivity tomography technique

  • Lei, Jiang;Chen, Weizhong;Li, Fanfan;Yu, Hongdan;Ma, Yongshang;Tian, Yun
    • Geomechanics and Engineering
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    • v.25 no.4
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    • pp.295-302
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    • 2021
  • Cross-borehole electrical resistivity tomography (ERT) is an effective groundwater detection tool in geophysical investigations. In this paper, an artificial water injection test was conducted on a small clay sample, where the high-resolution cross-borehole ERT was used to investigate the moisture migration law over time. The moisture migration path can be two-dimensionally imaged based on the relationship between resistivity and saturation. The hydraulic conductivity was estimated, and the magnitude ranged from 10-11 m/s to 10-9 m/s according to the comparison between the simulation flow and the saturation distribution inferred from ERT. The results indicate that cross-borehole ERT could help determine the resistivity distribution of small size clay samples. Finally, the cross-borehole ERT technique has been applied to investigate the self-sealing characteristics of clay.

Chinese Tone Evaluation System for Korean learners (한국인으 위한 중국어 성조 평가 시스템)

  • Kim, Mu-Jung;Kim, Hyo-Sook;Kim, Sun-Ju;Kang, Hyo-Won;Kwon, Chul-Hong
    • Proceedings of the KSPS conference
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    • 2005.04a
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    • pp.41-44
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    • 2005
  • This study is about Chinese tone evaluation system for Korean learners using speech technology, Chinese prounciaion system consists of initials, finals and tones. Initials/finals are in segmental level and tones are in suprasegmental level. So different method could be used assessing Korean users' Chinese. Differ from segmental level recognition method, we chose pattern matching method in evaluating Chinese tones. Firstly we defined speakers' own speech range and produced standard tonal pattern according to speakers' own range. And then we compared input patterns of users with referring patterns.

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