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Inositol Requiring Enzyme (IRE), a multiplayer in sensing endoplasmic reticulum stress
Zhixin Zhou,Qian Wang,Marek Michalak 한국통합생물학회 2021 Animal cells and systems Vol.25 No.6
The endoplasmic reticulum (ER) can sense a wide variety of external and internal perturbations and responds by mounting stress coping responses, such as the unfolded protein response (UPR). The UPR is composed of three stress sensors, namely IRE1α, PERK, and ATF6 that are activated to reestablish ER homeostasis. IRE1α represents the most ancient branch of the UPR affecting many cellular processes in plant and animal cells. IRE1α is a type I transmembrane protein with kinase/nuclease activities in response to ER stress. Both the ER luminal and cytosolic IRE1α interactomes have been identified revealing a multifunctional role of the ER stress sensor. IRE1α is also associated with organellar membrane contacts to promote rapid communication between intracellular organelles under stress conditions.
Zhixin Wan,Yinsheng He,신기삼,최철종,서은경 한국물리학회 2012 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.61 No.8
Transmission electron microscopy (TEM) was used to survey the microstructures of InGaN/GaN epitaxial layers deposited on c-plane sapphire substrate by metalorganic chemical vapor deposition (MOCVD) technique. Pt nanoclusters were deposited at the interface of InGaN/GaN epitaxial layer/sapphire substrate (sample A) and under the multi quantum-wells (MQWs) layers (sample B), aiming at understanding the Pt nanoclusters effect on the microstructural characteristic of epitaxial layers. Experimental results showed that the growth of epitaxial layer in sample A was much better than that in sample B. The dislocation density was measured as ~10<SUP>7 </SUP>cm<SUP>-2</SUP> and ~10<SUP>8 </SUP>cm<SUP>-2 </SUP>in sample A and sample B, respectively. The lower dislocation density in sample A was considered as the reason of threading dislocations (TDs) was stopped by nanoclusters at the interface. For MQWs in light emitting layers, the interfaces between InGaN and GaN barriers in sample A were very obvious and straight whereas in sample B were ambiguous.
On the receding contact between a two-layer inhomogeneous laminate and a half-plane
Zhixin Liu,Jie Yan,Changwen Mi 국제구조공학회 2018 Structural Engineering and Mechanics, An Int'l Jou Vol.66 No.3
This paper considers the smooth receding contact problem between a homogeneous half-plane and a composite laminate composed of an inhomogeneously coated elastic layer. The inhomogeneity of the elastic modulus of the coating is approximated by an exponential function along the thickness dimension. The three-component structure is pressed together by either a concentrated force or uniform pressures applied at the top surface of the composite laminate. Both semianalytical and finite element analysis are performed to solve for the extent of contact and the contact pressure. In the semianalytical formulation, Fourier integral transformation of governing equations and boundary conditions leads to a singular integral equation of Cauchy-type, which can be numerically integrated by Gauss-Chebyshev quadrature to a desired degree of accuracy. In the finite element modeling, the functionally graded coating is divided into homogeneous sublayers and the shear modulus of each sublayer is assigned at its lower boundary following the predefined exponential variation. In postprocessing, the stresses of any node belonging to sublayer interfaces are averaged over its surrounding elements. The results obtained from the semianalytical analysis are successfully validated against literature results and those of the finite element modeling. Extensive parametric studies suggest the practicability of optimizing the receding contact peak stress and the extent of contact in multilayered structures by the introduction of functionally graded coatings.
Leader-following Consensus of Heterogeneous Multi-agent Systems with Packet Dropout
Zhixin Liu,Hongjiu Yang,Xiu You,Ling Zhao 제어·로봇·시스템학회 2015 International Journal of Control, Automation, and Vol.13 No.5
This paper studies the leader-following consensus problem for heterogeneous multi-agent systems composed of linear second-order integrator agents and nonlinear Euler-Lagrange agents in two aspects. The consensus problem of heterogeneous multi-agent systems is discussed with unknown velocities, time-varying disturbances and packet dropout by introducing extended state observer. Sufficient conditions are established to ensure that all following agents could reach consensus with a virtual leader, which provide the allowable upper bound of packet drop rate. Numerical simulations are presented to illustrate the theoretical results.
Zhixin Kang,Yang Zhang,Takeshi Bessho,Hidetoshi Hirahara,Jing Sang 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.56 No.-
We present a novel method of spin-spray for preparing Ag/CNTs compositefilms on photo-graftedpolyimide (PI) substrate, which is evolved from spin and spray method. Compared with the compositessynthesized of silver nanoparticles and CNTs, it reduced pores of silver matrix. Meanwhile, MWCNTs inAg/CNTsfilms show an outstanding deposition and dispersity. Owing to CNTs, the sheet resistance ofAg/CNT-5 declined by 74.4% compared to the pristine Agfilms. Adhesive strength was strong enough forpracticability by photo-grafting. Otherwise, environmental stability was carried out and the selectivecoatings for diverse inter-connection with various deformations supported the application practicability.
Zhixin Zhang,Zhiqiang Cai,Khidhair Jasim Mohammed,H. Elhosiny Ali Techno-Press 2023 Advances in concrete construction Vol.15 No.1
Sport has no age limit and can be done anywhere and in any condition with minimal equipment. The existence of sports spaces in all parts of the world is considered a citizen's right. One of the activities carried out in this field is installing sports equipment and structures in parks and encouraging citizens to use this equipment for physical health with the least cost and facilities. Installing sports structures in open spaces such as parks is a practical step for developing citizens' sports. Although using devices in parks is acceptable, it is more critical to meet scientific and technical standards. The components of these structures must have high strength and endurance against changes in environmental conditions such as humidity, temperature difference, and corrosion. Among the various causes of material degradation, corrosion has always been one of several fundamental causes of metal equipment failure. Sports structures in open spaces are not safe from corrosion. Uniform corrosion is the most common type of corrosion. This corrosion usually occurs uniformly through a chemical or electrochemical reaction across the surface exposed to the corrosive environment. Rust and corrosion of outdoor sports structures are examples of this corrosion. For this reason, in this research, with the green synthesis of silica nanoparticles and its application in outdoor sports structures, the life span of these structures can be increased for the use of physical exercises as well as their quality.
Zhixin Kang,Wei Li 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.50 No.-
A rapid one-step electrodeposition process was developed to fabricate superhydrophobic surface on magnesium alloy and the shortest time was about 1 min. The morphology, wettability and chemical composition were tested, which indicated that, hierarchical structures and low surface energy material were generated on the cathode surface simultaneously. The superhydrophobic surface had a static water contact angle of 158.4 ± 0.9° and a sliding angle of 2°. Potentiodynamic polarization measurement demonstrated that the corrosion potential of the superhydrophobic surface increased and corrosion current density decreased by more than three orders of magnitude. Moreover, the obtained surface showed an excellent self-cleaning performance.
Zhixin, Dong,Yi, Chen Council on Tall Building and Urban Habitat Korea 2018 International journal of high-rise buildings Vol.7 No.2
The greenhouse effect caused by human activities is becoming increasingly serious. The building industry, which is directly related with carbon emissions, has the responsibility and potentiality to reduce carbon emissions. Recently, Chinese and foreign academics have achieved some research results with respect to building carbon emissions. This paper tries to examine these issues in the context of climate conditions in the Shanghai area. Based on the typical floor plans of high-rise office buildings, analysis was performed via software simulation and data analysis; the paper explores the relationship between different design methods of typical floor plans and carbon emissions. The objective is to deliver results beneficial to typical floor-design methods with respect to the reduction of carbon emissions, so as to provide a reference for architects.
Wan, Zhixin,Zhang, Teng Fei,Lee, Han-Bo-Ram,Yang, Ji Hoon,Choi, Woo Chang,Han, Byungchan,Kim, Kwang Ho,Kwon, Se-Hun American Chemical Society 2015 ACS APPLIED MATERIALS & INTERFACES Vol.7 No.48
<P>A new approach was adopted to improve the corrosion resistance of CrN hard coatings by inserting a Al2O3 layer through atomic layer deposition. The influence of the addition of a Al2O3 interlayer, its thickness, and the position of its insertion on the microstructure, surface roughness, corrosion behavior, and mechanical properties of the coatings was investigated. The results indicated that addition of a dense atomic layer deposited Al2O3 interlayer led to a significant decrease in the average grain size and surface roughness and to greatly improved corrosion resistance and corrosion durability of CrN coatings while maintaining their mechanical properties. Increasing the thickness of the Al2O3 interlayer and altering its insertion position so that it was near the surface of the coating also resulted in superior performance of the coating. The mechanism of this effect can be explained by the dense.Al2O3 interlayer acting as a good sealing layer that inhibits charge transfer, diffusion of corrosive substances, and dislocation motion.</P>