Ecofriendly high-performance ionic soft actuators based on graphene-mediated cellulose acetate

Nan, Minghui,Wang, Fan,Kim, Seokjae,Li, Hao,Jin, Zhen,Bang, Doyeon,Kim, Chang-Sei,Park, Jong-Oh,Choi, Eunpyo Elsevier 2019 Sensors and actuators. B Chemical Vol.301 No.-

<P><B>Abstract</B></P> <P>Ionic-type artificial muscles with eco-friendly, biodegradable, and biocompatible functionalities have attracted attention for a wide range of potential applications in wearable electronics, soft haptic-feedback systems, and active biomedical devices. Here, we report on the development of an ecofriendly high-performance ionic soft actuator based on biofriendly cellulose acetate (CA), graphene nanopowders (GN), ionic liquid (IL) as a plasticizer, and biofriendly-flexible-nonmetallic conducting polymer poly(3,4-ethylene-dioxythiopene)-polystyrenesulfonate (PEDOT: PSS) as an electrode, thereby realizing a novel ecofriendly CA-IL-GN actuator with a large bending mechanical deformation and a fast response time. The proposed CA-IL-GN (0.2 wt%) nanocomposite membrane exhibited dramatic increments in specific capacitance (2.92 times) and Young’s modulus (2.38 times), thus leading to a 2.9 times larger bending deformation and a 4.8 times faster response than those of pure CA-IL actuator. Therefore, the developed ecofriendly high-performance CA-IL-GN actuator can be considered to be a promising candidate for human-friendly electronics, including artificial muscles, flexible haptic devices, soft wearable devices, and bio-medical devices, due to its cost-effectiveness, large bending mechanical actuation, fast response, and bio-friendly functionalities.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Ecofriendly soft actuator based on cellulose acetate, graphene nanopowders, ionic liquid as plasticizer, and PEDOT:PSS as soft electrode. </LI> <LI> Proposed membrane exhibited increments in specific capacitance and Young’s modulus compare with a pure cellulose acetate actuator. </LI> <LI> Proposed actuator showed a 2.9 times larger bending deformation and a 4.8 times faster response than those of pure cellulose acetate actuator. </LI> </UL> </P>

[Book Review:] 崔英辰《韩国儒学思想研究》(邢丽菊译,北京:东方出版社,2009年)

( Li Minghui ) 성균관대학교 유교문화연구소 2011 儒敎文化硏究(中文版) Vol.0 No.15

Smart Home Education and Teaching Effect of Multimedia Network Teaching Platform in Piano Music Education

Minghui Li 보안공학연구지원센터 2016 International Journal of Smart Home Vol.10 No.11

Smart home contains all the living functions of the traditional home, and provides a more safe, comfortable and high-tech home space. With the development and popularization of multimedia technology, computer technology has been applied to music classroom, laboratory, music hall, almost all aspects of music teaching and research. In this paper, the author analyzes smart home education and multimedia network teaching platform in piano music education. Multimedia combined with different teaching characteristics, through the modern media as the carrier of the communication channels, then process the formation of vivid images or sounds of music. Along with the digital process of music classroom, computer music workstations, multimedia, distance learning, portable music systems, online interactive music creation, and other technologies are being popularized.

Studies on the Hereditary Properties of SSR Marker in Silkworm (Bombyx mori L.)

Li Muwang,Li Minghui,Miao Xuexia,Lu Cheng,Huang Yongping Korean Society of Sericultural Science 2005 International Journal of Industrial Entomology Vol.11 No.1

Two BC1 group, c108 $\times$ (p50 $\times$ c108) and p50 $\times$ (p50 $\times$ c108), one group of F$_{2}$ progeny, (p50 $\times$ c108) F$_{2}$ ,and 3 SSR markers, F10539, FlO626 and FlO618 were used to test the hereditary properties of SSR markers in silkworm. FI0539, FlO626 were proved to be linkage, and FlO618 was proved to be independent to those two markers. According to Mendel's law, the recombinant value between F10539, FlO626 was calculated in all of these groups, and they were 8.55$\%$ (c108BC1), 8.02$\%$ (p50BC1) and 7.81 $\%$ (F$_{2}$) respectively. There was dominant difference among the crossing-over value using paired-samples tests by SPSS 10.0 software. This research proved that SSR markers were co-dominant in B. mori too, and F 2 progeny could be used to construct SSR linkage map although B. mori lacked of crossing over in females.

Research on Fuzzy Fractional Order PID Control of Liquid Temperature in Displacement Digester

Minghui Li,Wenkai Wu,Xingkui Yang 한국펄프·종이공학회 2020 펄프.종이기술 Vol.52 No.5

<i>OsASR5</i> enhances drought tolerance through a stomatal closure pathway associated with ABA and H ₂ O ₂ signalling in rice

Li, Jinjie,Li, Yang,Yin, Zhigang,Jiang, Jihong,Zhang, Minghui,Guo, Xiao,Ye, Zhujia,Zhao, Yan,Xiong, Haiyan,Zhang, Zhanying,Shao, Yujie,Jiang, Conghui,Zhang, Hongliang,An, Gynheung,Paek, Nam‐,Cho John Wiley and Sons Inc. 2017 Plant biotechnology journal Vol.15 No.2

<P><B>Summary</B></P><P>Drought is one of the major abiotic stresses that directly implicate plant growth and crop productivity. Although many genes in response to drought stress have been identified, genetic improvement to drought resistance especially in food crops is showing relatively slow progress worldwide. Here, we reported the isolation of <I>abscisic acid</I>,<I> stress</I> and <I>ripening</I> (<I>ASR</I>) genes from upland rice variety, IRAT109 (<I>Oryza sativa</I> L. ssp. <I>japonica</I>), and demonstrated that overexpression of <I>OsASR5</I> enhanced osmotic tolerance in <I>Escherichia coli</I> and drought tolerance in <I>Arabidopsis</I> and rice by regulating leaf water status under drought stress conditions. Moreover, overexpression of <I>OsASR5</I> in rice increased endogenous ABA level and showed hypersensitive to exogenous ABA treatment at both germination and postgermination stages. The production of H<SUB>2</SUB>O<SUB>2</SUB>, a second messenger for the induction of stomatal closure in response to ABA, was activated in overexpression plants under drought stress conditions, consequently, increased stomatal closure and decreased stomatal conductance. In contrast, the loss‐of‐function mutant, <I>osasr5</I>, showed sensitivity to drought stress with lower relative water content under drought stress conditions. Further studies demonstrated that OsASR5 functioned as chaperone‐like protein and interacted with stress‐related HSP40 and 2OG‐Fe (II) oxygenase domain containing proteins in yeast and plants. Taken together, we suggest that <I>OsASR5</I> plays multiple roles in response to drought stress by regulating ABA biosynthesis, promoting stomatal closure, as well as acting as chaperone‐like protein that possibly prevents drought stress‐related proteins from inactivation.</P>

Expression profiles of genes involved in fatty acid and lipid biosynthesis in developing seeds of Paeonia ostii

Li Chaoqiong,Hu Lizong,Que Beibei,Hu Yueran,Guo Yuanyuan,Zhang Minghui,Wang Zenan,Wang Xueqin,Liu Hongzhan,Wang Junsheng,Tian Huihui,Li Xiaoli 한국유전학회 2021 Genes & Genomics Vol.43 No.8

Background Paeonia ostii seeds were identifed as novel sources of edible plant oil with a high proportion of α-linolenic acid, a type of n-3 fatty acid with many health benefts. Due to the unreliability of seed oil content and quality, it is necessary to discover the mechanism underlying lipid biosynthesis in Paeonia ostii seeds. Objectives This study aimed to identify the key genes involved in lipid biosynthesis in Paeonia ostii seeds by analyzing the relationship among the seed characteristics and the expression patterns of lipid genes in Paeonia ostii during seed development. Methods Preliminary research on Paeonia ostii seed development was carried out from 10 days after pollination until maturity, focusing on phenology, oil content and lipid profles. In addition, we investigated the spatiotemporal expression of 36 lipid biosynthetic genes in Paeonia ostii by using quantitative real-time PCR. Results The results suggested that the development of Paeonia ostii seeds from pollination to maturity could be divided into three periods. The 36 lipid genes showed various spatiotemporal expression patterns and fve gene groups with distinct temporal patterns during seed development were identifed by clustering analysis of expression data. Furthermore, the relationships between gene expression and lipid/fatty acid accumulation and some candidate key lipid genes were discussed. Conclusions This study provided the global patterns of fatty acid and lipid biosynthesis-related gene expression, which are critical to understanding the molecular basis of lipid biosynthesis and identifying the lipid accumulation rate-limiting genes during seed development.

Three new ent-abietane diterpenoids from the roots of Euphorbia fischeriana and their cytotoxicity in human tumor cell lines

Minghui Li,Fang He,Yuan Zhou,Meigui Wang,Pingde Tao,Qingmei Tu,Guanghui Lv,Xintao Chen 대한약학회 2019 Archives of Pharmacal Research Vol.42 No.6

Three new ent-abietane diterpenoids, termed fischerianoids A–C (1–3), were isolated and identified from the ethyl acetate extracts of roots of the medicinally valuable plant Euphorbia fischeriana. The planar and relative structures of 1–3 were established via high-resolution electrospray ionisation mass spectrometry and one- and two-dimensional nuclear magnetic resonance spectroscopic analyses, and the absolute configuration of 1 was further established via X-ray crystallography experiment. Compounds 1–3 showed selective inhibitory potency against certain human tumor cell lines with IC50 values ranging from 8.50 ± 0.13 to 35.52 ± 0.08 μM.

Configuration Design and Optimization of a Novel Two-Mode Compound Power-Split Hybrid System

Hu Minghui,Zeng Li,Fu Guangshun,Zhou Anjian,Li Zhonghua,Qin Datong 한국자동차공학회 2021 International journal of automotive technology Vol.22 No.4

Through the analysis of a CHS (Chinese hybrid system) compound power-split configuration, it is found that enhancing the system's speed decoupling ability can reduce the electric power loss, optimize the engine operating point distribution, and enhance the vehicle dynamics. This paper proposes a novel compound power-split configuration with a twospeed AMT (Automated manual transmission), which includes an electric-vehicle mode, a low-speed power-split mode, and a high-speed power-split mode. First, the electric power characteristics and rotational speed/torque characteristics of the CHS compound power-split configuration are analyzed using the lever method, theoretically demonstrating the rationality of the two-speed AMT+ compound power-split configuration. Then, the genetic algorithm is employed to optimize the multiparameters and multi-objectives in terms of the vehicle dynamics and economy. Finally, a comparative simulation and analysis of the vehicle’s economic and dynamic properties is performed for the new two-speed AMT+ compound power-split configuration and the original CHS compound power-split configuration. The results show that the vehicle economy is increased by 6.9 % for the new configuration, the acceleration time per 100 kilometers is decreased by 27.5 %, and the maximum speed is increased by 13.2 %.

Non-probabilistic Integrated Reliability Analysis of Structures with Fuzzy Interval Uncertainties using the Adaptive GPR-RS Method

Minghui Liu,Xiaoling Wang,Xiaobin Zhu,Wenlong Chen,Xiao Li 대한토목학회 2019 KSCE JOURNAL OF CIVIL ENGINEERING Vol.23 No.9

Due to its weak dependence on the quantity of variable samples, the non-probabilistic reliability analysis method based on the convex set model is applicable to practical problems in structural engineering with inherent uncertainties. However, when dealing with the black-box limit-state function issues in practical complex structural engineering, the traditional quadratic polynomial response surface (QP-RS) method has the problem of insufficient precision in approximating a highly nonlinear function. Meanwhile, fixing the limits of interval variables is trickier in case of scant samples and meager statistical information. To remedy the above deficiencies, this paper introduces a reasonable integrated reliability analysis approach. First, an adaptive Gaussian process regression response surface (GPR-RS) method that dynamically improves the fitted accuracy near the design point of the black-box limit-state function is formulated. Furthermore, the integrated reliability index with consideration of fuzzy interval uncertainties is presented. Three validation and two application examples are employed, which have justified the approach as a more reasonable assessor of practical complex structural reliability with safer results.