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Zhongzheng Liu,Zhen Liu,Baoping Jiang,Cunchen Gao 제어·로봇·시스템학회 2023 International Journal of Control, Automation, and Vol.21 No.12
In this paper, an innovative sliding mode framework is used to propose an observer-based adaptive control scheme for uncertain switched systems with unknown time-varying delay. First, a state observer with no input information is built incorporating a new sliding manifold (SM) to rebuild the unmeasured state variables, which does not rely on accurate information of the time-delay. By picking a suitable Lyapunov function, using the average dwell time (ADT) approach and linear matrix inequality (LMI) tool, a novel stability criterion for the resultant sliding motion is devised. In addition, to meet the defined SM’s arrival condition, a new adaptive variable structure controller is constructed. Finally, two illustrative examples are given to demonstrate the efficacy of the control method.
Zhongzheng Pei,Renbo Song,Yifan Feng,Jie Xu 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.11
Here we utilized two cooling methods, forced air cooling and furnace cooling, to obtain two different triplex microstructureswhich were martensite-based and bainite-based, respectively. Compared with furnace cooled samples, the forced air cooledsamples presented about 5% higher ultimate tensile strength, 10% higher hardness and 43% lower Charpy impact energyvalue. Nano-indentation test was conducted to reveal the local mechanical properties. The nano-hardness of martensite,bainite and the mixture microstructure is 5.633 GPa, 4.200 GPa and 5.082 GPa, respectively. Mn, S, C and Si segregationat the grain boundaries in martensite are severely detrimental to the toughness. High rotation angle grain boundaries andprecipitates of rare earth element enhanced the toughness of bainite. Martensite with high density dislocations in fine lathsexhibited higher nano-hardness than bainite with lower density dislocations in wider sized laths. The interaction of the twophases with martensite twinning sub structure between bainite laths showed intermediate nano-hardness.
Molecular Cloning of a LIM Protein cDNA from the Mulberry Longicorn Beetle, Apriona germari
Gui, Zhongzheng,Wei, Yadong,Yoon, Hyung Joo,Kim, Iksoo,Guo, Xijie,Jin, Byung Rae,Sohn, Hung Dae Korean Society of Sericultural Science 2004 International Journal of Industrial Entomology Vol.9 No.1
Here we report the molecular cloning of a LIM protein cDNA of the CRP (cysteine-rich protein) family from the mulberry longicorn beetle, Apriona, geramri. The A. germari LIM protein cDNA contains an open reading frame of 276 bp encoding 92 amino acid residues with a calculated molecular weight of approximately 10 kDa. The A. germari LIM protein contains the cysteine-rich consensus sequence of LIM domain and the glycine-rich consensus sequence observed in cysteine-rich protein family 1 (CRP1). The potential nuclear targeting signal is retained. The deduced amino acid sequence of the A. germari LIM protein cDNA showed 81 % identity to both Bombyx mori muscle LIM protein (Mlp) and Drosophila melanogaster Mlp60A and 77% to Epiblema scudderiana Mlp. Northern blot analysis showed that A. germari LIM protein is highly expressed in epidermis and muscle, and less strongly in midgut, but not in the fat body.
Cloning and mRNA Expression of an Actin cDNA from the Mulberry Longicorn Beetle, Apriona germari
Gui, Zhongzheng,Lee, Kwang Sik,Wei, Yadong,Yoon, Hyung Joo,Kim, Iksoo,Guo, Xijie,Sohn, Hung Dae,Jin, Byung Rae Korean Society of Sericultural Science 2004 International Journal of Industrial Entomology Vol.9 No.2
Actin is a ubiquitous and highly conserved protein found in eukaryotic organisms. In this study, we describe the cDNA cloning and mRNA expression of an actin gene from the mulberry longicorn beetle, Apriona germari. The A. germari actin cDNA is 1524 bp containing a complete 1128 bp open reading frame that encodes a polypeptide of 376 amino acid residues with a predicted molecular weight of about 41.5 kDa. The deduced amino acid sequence of the A.germari actin cDNA showed 99% protein sequence identity to Homalodisca coagulata actin, differing at only two amino acid positions, and 92-98% protein sequence identity to known insect species actins. The predicted three-dimensional structure of A. germari actin revealed the four residue hydrophobic pulg loop characteristic of the actin family. Northern blot analysis showed that A. germari actin is highly expressed in epidermis and muscle, and less strongly in midgut, but not in the fat body of A. germari larva.
The Physical Methods for Induction of Anti-Bacterial Substances in the Silkworm Larva, Bombyx mori
Gui, Zhongzheng,Dai, Jianyi,Zhuang, Dahuan Korean Society of Sericultural Science 2003 International Journal of Industrial Entomology Vol.7 No.2
To understand the physical method for induction of anti-bacterial substances from the silkworm larvae, Bombyx mori, three physical methods, i.e., infrared radiation, ultraviolet radiation and ultrasonic wave, have been used in this study. The results have shown that ultrasonic wave can induce anti-bacterial sub-stances effectively than radiations in the B. mori larva. The induction of anti-bacterial substances was different from silkworm race to race. Summer-autumn silkworm race (Qiufeng${\times}$Baiyu) was easy to induce antibacterial substances. It is suggested that the ultrasonic wave is a simple and easy method for induction.