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Biosorption of Cd

Fengyu ZAN, Shouliang HUO, Beidou XI, Xiulan ZHAO

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 1,   Pages 51-58 doi: 10.1007/s11783-011-0206-9

Abstract: The biosorption of Cd and Cu onto the immobilized ( ) was investigated in this study.The results indicated that the biosorption of Cd and Cu on the immobilized was fast at initial stageThe maximum biosorption of heavy metal ions on immobilized were observed at pH 4 for Cd and Cu . bybiosorption isotherm was fitted well by the Langmuir model, indicating possible mono-layer biosorption of CdMoreover, the immobilized after the sorption of Cd and Cu could be regenerated and reused.

Keywords： Saccharomyces cerevisiae (S. cerevisiae)     biosorption     heavy metals     immobilization    

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Boundary conditions for axisymmetric piezoelectric cylinder

Baosheng ZHAO, Di WU, Xi CHEN

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 4,   Pages 401-408 doi: 10.1007/s11465-013-0272-8

Abstract:

For axisymmetric piezoelectric cylinder, the reciprocal theorem and the axisymmetric general solution of piezoelasticity are applied in a novel way to obtain the appropriate stress and mixed boundary conditions accurate to all orders for the cylinder of general edge geometry and loadings. A decay analysis technique developed by Gregory and Wan is converted into necessary conditions on the end-data of axisymmetric piezoelectric circular cylinder, and the rapidly decaying solution is established. The prescribed end-data of the circle cylinder must satisfy these conditions in order that they could generate a decaying state within the cylinder. When stress and mixed conditions are imposed on the end of cylinder, these decaying state conditions for the case of axisymmetric deformation of piezoelectric cylinder are derived explicitly. They are then used for the correct formulation of boundary conditions for the theory solution (or the interior solution) of axisymmetric piezoelectric cylinder. The results of the present paper enable us to establish a set of correct boundary conditions, most of which are obtained for the first time.

Keywords： structures     the axisymmetric deformation     the piezoelectric circular cylinder     the refined theory     Bessel’s    

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Autophagy and the nutritional signaling pathway

Long HE,Shabnam ESLAMFAM,Xi MA,Defa LI

Frontiers of Agricultural Science and Engineering 2016, Volume 3, Issue 3,   Pages 222-230 doi: 10.15302/J-FASE-2016106

Abstract: During the initiation process, the ATG1/ULK1 (unc-51-like kinase 1) and VPS34 (which encodes a classAmino acid and energy starvation mediate autophagy by activating mTORC1 (mammalian target of rapamycinmechanism of autophagy regulated by nutrient signaling especially for the two important complexes, ULK1

Keywords： Autophagy     ULK1 complex     VPS34 complex     AMPK     mTOR     nutrient signaling    

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Effect of ultraviolet irradiation and chlorination on ampicillin-resistant

Yuchen PANG,Jingjing HUANG,Jinying XI,Hongying HU,Yun ZHU

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 3,   Pages 522-530 doi: 10.1007/s11783-015-0779-9

Abstract: There was no evident damage to after 1–10 mg Cl ·L chlorination, while a UV dose of 80 mJ·cm yielded

Keywords： antibiotic resistance     <i>Escherichia colii>     ampicillin resistance gene     ultraviolet irradiation     chlorination    

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Superior performance in visible-light-driven hydrogen evolution reaction of three-dimensionally ordered macroporous SrTiO decorated with ZnCdS

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 6,   Pages 1561-1571 doi: 10.1007/s11705-021-2089-z

Abstract: the fabrication of three-dimensionally ordered macroporous SrTiO3 decorated with Zn<i>xi>Cd1−<i>xi>S nanoparticles for hydrogen production under visible lightobtained composites could afford very high hydrogen production efficiencies up to 19.67 mmol·g−10.5Cd0.5S (4.67 mmol·g−1·h−1) and CdS (0.82 mmol·g−1·h−1), respectively.

Keywords： three-dimensionally ordered macroporous SrTiO3     Zn<i>xi>Cd1–<i>xi>S     visible light     hydrogen production     promotion mechanism    

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Effects of hypoxia inducible factor-1alpha siRNA on the invasion of human Hela cells and expression of

Bin YANG MS , Xianglin YUAN , Yanmei ZOU , Qingsong XI , Guoxian LONG , Qiang FU , Guangyuan HU MM ,

Frontiers of Medicine 2009, Volume 3, Issue 3,   Pages 303-308 doi: 10.1007/s11684-009-0060-3

Abstract: invasion and the related protein expression of Hela cells and the role of hypoxia inducible factor-1α (HIF-1α) were investigated.The Hela cells were divided into three groups, namely, H (non-transfected Hela cells), H (pGenesil-1empty plasmid-transfected Hela cells), and H (HIF-1α-shRNA plasmid-transfected Hela cells), andwere cultured under hypoxia (1% O) and normoxia for 48h.

Keywords： hypoxia     actin     β     -catenin     E-cadherin     invasion    

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Uncovering CO2 emission drivers under regional industrial transfer in China’s Yangtze River

Huijuan JIANG, Yong GENG, Xu TIAN, Xi ZHANG, Wei CHEN, Ziyan GAO

Frontiers in Energy 2021, Volume 15, Issue 2,   Pages 292-307 doi: 10.1007/s11708-020-0706-z

Abstract: With the relocation of heavy industries moving from downstream region to upstream and midstream regions in the Yangtze River Economic Belt (YREB), it is critical to encourage coordinated low carbon development in different regions within the YREB. This paper uncovers the evolution of CO emissions in different regions within the YREB for the period of 2000–2017. It decomposes regional CO emission changes using the temporal and cross-regional three-layer logarithmic mean Divisia index (LMDI) method. Besides, it decomposes industrial CO emission changes using the temporal two-layer LMDI method. The research results show that economic growth is the major driver for regional CO emission disparities. The mitigation drivers, such as energy intensity and energy structure, lead to a more decreased CO emission in the downstream region than in the upstream and midstream regions. In addition, it proposes several policy recommendations based upon the local realities, including improving energy efficiency, optimizing energy structure, promoting advanced technologies and equipment transfers, and coordinating the development in the upstream, midstream and downstream regions within the YREB.

Keywords： CO2 emission     multi-layer LMDI decomposition     industrial transfer     governance    

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Conserved Surface Polysaccharide Are Protective Against a Wide Range of Microbial Pathogens Producing β-1–

Xi Lu,Guoqing Li,Jing Pang,Xinyi Yang,Colette Cywes-Bentley,Xuefu You,Gerald B. Pier,

Engineering doi: 10.1016/j.eng.2023.09.012

Abstract: The β-1–6-linked poly-N-acetylglucosamine (PNAG) polymer is a conserved surface polysaccharide produced

Keywords： Poly-     N     -acetylglucosamine     Conjugate vaccine     Monoclonal antibody    

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Cost-benefit analysis of China’s national air pollution control plan

Jing ZHANG, Hongqiang JIANG, Wei ZHANG, Guoxia MA, Yanchao WANG, Yaling LU, Xi HU, Jia ZHOU, Fei PENG

Frontiers of Engineering Management 2019, Volume 6, Issue 4,   Pages 524-537 doi: 10.1007/s42524-019-0074-8

Abstract: China’s rapid economic growth has caused severe air pollution and public health problems.significance for advancing the long-term effective mechanisms of the cost-benefit analysis of China’s

Keywords： Air Plan     cost-benefit analysis     health benefits     environmental policy    

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A surrogate-based optimization algorithm for network design problems Article

Meng LI, Xi LIN, Xi-qun CHEN

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 11,   Pages 1693-1704 doi: 10.1631/FITEE.1601403

Abstract: Network design problems (NDPs) have long been regarded as one of the most challenging problems in the field of transportation planning due to the intrinsic non-convexity of their bi-level programming form. Furthermore, a mixture of continuous/discrete decision variables makes the mixed network design problem (MNDP) more complicated and difficult to solve. We adopt a surrogate-based optimization (SBO) framework to solve three featured categories of NDPs (continuous, discrete, and mixed-integer). We prove that the method is asymptotically completely convergent when solving continuous NDPs, guaranteeing a global optimum with probability one through an indefinitely long run. To demonstrate the practical performance of the proposed framework, numerical examples are provided to compare SBO with some existing solving algorithms and other heuristics in the literature for NDP. The results show that SBO is one of the best algorithms in terms of both accuracy and efficiency, and it is efficient for solving large-scale problems with more than 20 decision variables. The SBO approach presented in this paper is a general algorithm of solving other optimization problems in the transportation field.

Keywords： Network design problem     Surrogate-based optimization     Transportation planning     Heuristics    

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Reconfigurable manufacturing systems: Principles, design, and future trends

Yoram KOREN, Xi GU, Weihong GUO

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 2,   Pages 121-136 doi: 10.1007/s11465-018-0483-0

Abstract: advantages of both dedicated serial lines and flexible manufacturing systems, were introduced in the mid-1990s

Keywords： reconfigurable manufacturing systems     responsiveness     intelligent manufacturing    

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Minimax <i>Qi>-learning design for <i>Hi>∞ control of linear discrete-time systems Research Articles

Xinxing LI, Lele XI, Wenzhong ZHA, Zhihong PENG,lixinxing_1006@163.com,xilele.bit@gmail.com,zhawenzhong

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 3,   Pages 438-451 doi: 10.1631/FITEE.2000446

Abstract: model-free method is developed, on the basis of an offline algorithm, which is shown to be Newton’s

Keywords： H∞ control     Zero-sum dynamic game     Reinforcement learning     Adaptive dynamic programming     Minimax Q-learning     Policy iteration    

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Seismic performance of viaducts with probabilistic method

ZHU Xi, WANG Jianmin

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 3,   Pages 267-273 doi: 10.1007/s11709-007-0034-y

Abstract: Due to the uncertainty of both ground motions and structural capacity, it is necessary to consider the seismic performance of viaduct structures using the probabilistic method. The risk is quantified by a procedure on the basis of a numerical determination of the fragility curves. A group of ground motions, Large Magnitude-Short Distance Bin (LMSR-N), selected specially due to its response spectra, is accorded well with the corresponding spectra of the Chinese code for seismic design. The characteristic values of the curvature ductility factors for the serviceability and the damage control limit states are obtained, and two equations for estimating the characteristic values of the curvature ductility factors are developed through regression analysis. Then, the serviceability and damage control limit states were proposed. Three damage states were constituted according the results of the experiment by Pacific Earthquake Engineering Research (PEER) Center. The analytical fragility curves were obtained specifically, using both Capacity Spectrum Method (CSM) (non-linear static) analysis and Ineremental Dynamic Method (IDM) (non-linear dynamic) analysis, respectively, in this paper. The structural fragility curves developed by CSM method can help make the structural analysis simple and quick, avoiding the implementation of the dynamic response history analysis (RHA). Although the dynamic RHA requires a lot of complicated analysis for the structure, the results from RHA are reliable and accurate. Fragility curves are powerful tools for use in performance-based seismic bridge design.

Keywords： uncertainty     Earthquake Engineering     regression analysis     accurate     fragility    

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Prevalence and molecular characteristics of

Hong Wang, Lijuan Luo, Zhengdong Zhang, Jianping Deng, Yan Wang, Yimao Miao, Ling Zhang, Xi Chen, Xiang

Frontiers of Medicine 2018, Volume 12, Issue 1,   Pages 104-112 doi: 10.1007/s11684-017-0593-9

Abstract: The overall occurrence of the <i>L. monocytogenesi> in the ready-to-eat (RTE) shops and muttonSerotype 1/2b (45.4%), 1/2a (33.3%), and 1/2c (14.2%) were the predominant types.gene fragment <i>ptsAi>, and all CC3 strains possessed the <i>Listeriai> pathogenicityisland 3 (LIPI-3) gene fragment <i>llsXi>.ST619 (serotype 1/2b) harbored both <i>llsXi> and <i>ptsAi>, indicating a potential

Keywords： <i>Listeria monocytogenesi>     MLST     LIPI-3     LIPI-4     RTE     listeriosis    

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Chinese Academy of Engineering released

Xu Wang, Jiao Zhang, Xi Lu, Xia Huang

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 4, doi: 10.1007/s11783-020-1257-6

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Title Author Date Type Operation

Biosorption of Cd

Fengyu ZAN, Shouliang HUO, Beidou XI, Xiulan ZHAO

Journal Article

Boundary conditions for axisymmetric piezoelectric cylinder

Baosheng ZHAO, Di WU, Xi CHEN

Journal Article

Autophagy and the nutritional signaling pathway

Long HE,Shabnam ESLAMFAM,Xi MA,Defa LI

Journal Article

Effect of ultraviolet irradiation and chlorination on ampicillin-resistant

Yuchen PANG,Jingjing HUANG,Jinying XI,Hongying HU,Yun ZHU

Journal Article

Superior performance in visible-light-driven hydrogen evolution reaction of three-dimensionally ordered macroporous SrTiO decorated with ZnCdS

Journal Article

Effects of hypoxia inducible factor-1alpha siRNA on the invasion of human Hela cells and expression of

Bin YANG MS , Xianglin YUAN , Yanmei ZOU , Qingsong XI , Guoxian LONG , Qiang FU , Guangyuan HU MM ,

Journal Article

Uncovering CO2 emission drivers under regional industrial transfer in China’s Yangtze River

Huijuan JIANG, Yong GENG, Xu TIAN, Xi ZHANG, Wei CHEN, Ziyan GAO

Journal Article

Conserved Surface Polysaccharide Are Protective Against a Wide Range of Microbial Pathogens Producing β-1–

Xi Lu,Guoqing Li,Jing Pang,Xinyi Yang,Colette Cywes-Bentley,Xuefu You,Gerald B. Pier,

Journal Article

Cost-benefit analysis of China’s national air pollution control plan

Jing ZHANG, Hongqiang JIANG, Wei ZHANG, Guoxia MA, Yanchao WANG, Yaling LU, Xi HU, Jia ZHOU, Fei PENG

Journal Article

A surrogate-based optimization algorithm for network design problems

Meng LI, Xi LIN, Xi-qun CHEN

Journal Article

Reconfigurable manufacturing systems: Principles, design, and future trends

Yoram KOREN, Xi GU, Weihong GUO

Journal Article

Minimax <i>Qi>-learning design for <i>Hi>∞ control of linear discrete-time systems

Xinxing LI, Lele XI, Wenzhong ZHA, Zhihong PENG,lixinxing_1006@163.com,xilele.bit@gmail.com,zhawenzhong

Journal Article

Seismic performance of viaducts with probabilistic method

ZHU Xi, WANG Jianmin

Journal Article

Prevalence and molecular characteristics of

Hong Wang, Lijuan Luo, Zhengdong Zhang, Jianping Deng, Yan Wang, Yimao Miao, Ling Zhang, Xi Chen, Xiang

Journal Article

Chinese Academy of Engineering released

Xu Wang, Jiao Zhang, Xi Lu, Xia Huang

Journal Article