Dong F.,Xijing University
Chemical Engineering Transactions | Year: 2016
In order to improve the quality and performance of the green construction technology model of aluminum alloy formwork, the multi factor coupling method is proposed in this paper. The aluminum alloy system formwork encourages quality control from an early stage, i. e from the planning and design stages, through the manufacturing process, packing, delivery to site, erecting on site, dismantling and repeated assembly and removal process. In turn this facilitates good quality of concrete. The experiment result shows the system has been proved to be successful in many countries and cities. As the applicator of the aluminum alloy system formwork, it is proved to say that further invention of semi-labour system by the use of construction R&D might resolve the intensive labour problem. It will take time to improve the design and erection in a more scientific and mechanical way in order to achieve an objective of using less labour. Copyright © 2016, AIDIC Servizi S.r.l.
Zhang Y.,Xijing University
Zhenkong Kexue yu Jishu Xuebao/Journal of Vacuum Science and Technology | Year: 2016
A novel technique was proposed tofurther remove the low pressure air in the vacuum tube, pumped down from atmosphere to ~104 Pa via the stationary pumqing stations, by means of the running vehicle in vacuum tube transport. In the proposed pumping scheme, the fast-runing vehicletakes air in and stores the compressed air in its mobile storage tanks, while pushing out the air in the tube through the openings, constructed along the tube wall. The impact of the technical factors, including but not limited to the compressor's energy consumption, number of mobile storage tank, pumping capacity, construction cost, and possible technical problems to be solved, on the pumping efficiency and feasibility of the proposed technique was tentatively discussed in a though provoking way. We suggest that the novel auxiliary pumping method may be of some basic and technological interest in development of vacuum tube transport. © 2016, Science Press. All right reserved.
Sun W.,Xijing University
International Conference on Control, Automation and Systems | Year: 2016
For solving stiff differential-algebraic equations, we present the discrete dynamic iteration processes for multibody dynamics problems. The waveform relaxation iteration based on the Runge-Kutta(RK) methods is studied. The convergence results is obtained. This method provides an effective iterative process to the numerical approach for multibody systems. © 2016 Institute of Control, Robotics and Systems - ICROS.
Eyo U.B.,Rutgers University |
Gu N.,Rutgers University |
Gu N.,Xijing University |
De S.,Rutgers University |
And 4 more authors.
Journal of Neuroscience | Year: 2015
Extracellular calcium concentrations in the brain fluctuate during neuronal activities and may affect the behavior of brain cells. Microglia are highly dynamic immune cells of the brain. However, the effects of extracellular calcium concentrations on microglial dynamics have not been investigated. Here, we addressed this question in mouse brain slices and in vivo using two-photon microscopy. We serendipitously found that extracellular calcium reduction induced microglial processes to converge at distinct sites, a phenomenon we termed microglial process convergence (MPCs). Our studies revealed that MPCs target neuronal dendrites independent of neuronal action potential firing and is mediated by ATP release and microglial P2Y12 receptors. These results indicate that microglia monitor and interact with neurons during conditions of cerebral calcium reduction in the normal and diseased brain. © 2015 the authors.
Zhu J.Y.,Xijing University
Zhonghua gan zang bing za zhi = Zhonghua ganzangbing zazhi = Chinese journal of hepatology | Year: 2011
To observe the efficacy of ursodeoxycholic acid (UDCA) combined with glucocorticoids in the treatment of autoimmune hepatitis-primary biliary cirrhosis (AIH-PBC) overlap syndrome. 19 patients with AIH-PBC overlap syndrome were divided randomly into two groups: initiate combined group and initiate UDCA-monotherapy group. Biochemical responses and pathological features before and after treatment were analyzed retrospectively with student's t test, Wilcoxon rank sum test and Fisher's exact method. In the initiate combination group, biochemical responses in terms of AIH features (ALT decline to normal, IgG is less than or equal to 16 g/L) and PBC features (ALP decline ≥ 40% or to normal) were achieved. In UDCA-monotherapy group, no statistical difference existed in biochemical responses before adding glucocorticoids, whereas the levels of ALT, AST, GLB and IgG decreased significantly when combined with glucocorticoids. No statistical difference of rates of biochemical responses eixted between the two groups, whereas variance could be seen in different pathological stages. Alleviation of inflammatory infiltration after therapy appeared in 3 patients. Combination therapy of UDCA with glucocorticoids could be suitable for AIH-PBC overlap syndrome. Early treatment is of benefit for achieving better biochemical response and pathological improvement.
Chen X.,Xijing University
Lin chuang er bi yan hou tou jing wai ke za zhi = Journal of clinical otorhinolaryngology, head, and neck surgery | Year: 2013
To investigate the injury of button battery to nose and discuss its management. Thirteen cases with button battery in nose were reviewed. After the removal of button battery, nasal cavity irrigations were carried out carefully by nasal endoscopy in all cases. Gelfoam full of erythromycin eye ointment was used to cover the injured mucous membrane. Among all the cases, 10 got full recovery without any complication. There are 2 cases of synechia nasal and 1 case of septum perforation. Removal as soon as possible, careful cleaning and systemic drug are necessary. Nose bleed, septum perforation, adhesion and rhinostenosis should be noticed.
Huang Y.-H.,Xijing University |
Zhang Q.-H.,Chinese PLA General Hospital
British Journal of Nutrition | Year: 2010
The present study was undertaken to investigate the antioxidant effect of chronic ingestion of genistein (Gen) against neural death in the brain of ovariectomised (Ovx) rats. The rats were randomlydivided into five groups, i.e. sham-operated (sham), Ovx-only, Ovx with 17-oestradiol, Ovx with low (15mg/kg) and high (30mg/kg) doses of Gen (Gen-L and Gen-H), and were orally administered dailywith drugs or vehicle for 6 weeks. The learning and memory abilities were measured by Morris water maze test. Oxidative damages in the brain were evaluated by the level of superoxide dismutase (SOD), malondialdehyde (MDA) and monoamine oxidase (MAO) activities. Neural apoptosis was shown by terminal deoxynucleotidyl transferase dUTP nick end labelling (TUNEL) staining and caspase-3 activity.In the visual learning and memory test, there were no significant differences among the population means of the five groups. While in the probe trial test, the Gen-L group instead of the Gen-H group exhibited reduced escape latency and increased memory frequency than the Ovx group. Although both doses of Gen could reduce acetylcholinesterase activity, only a low dose of Gen could diminish MDA activitysignificantly in frontal cortex and enhance SOD content in the hippocampus. In contrast, MAO content was decreased in the cortex by either dose of Gen, while in the hippocampus, only a high dose of Genappeared to be effective. Interestingly, Gen at both the doses could attenuate the increased number of TUNEL-positive neurons and caspase-3 activity in Ovx rats. These results suggest that Gen confersprotection against Ovx-induced neurodegeneration by attenuating oxidative stress, lipid peroxidation and the mitochondria-mediated apoptotic pathway in a region- and dose-dependent manner.© The Authors 2010.
Wei Z.,Wuhan University |
Wang Z.,Xijing University
Kybernetika | Year: 2013
By introducing a feedback control to a proposed Sprott E system, an extremely complex chaotic attractor with only one stable equilibrium is derived. The system evolves into periodic and chaotic behaviors by detailed numerical as well as theoretical analysis. Analysis results show that chaos also can be generated via a period-doubling bifurcation when the system has one and only one stable equilibrium. Based on Lyapunov stability theory, the adaptive control law and the parameter update law are derived to achieve modified function projective synchronized between the extended Sprott E system and original Sprott E system. Numerical simulations are presented to demonstrate the effectiveness of the proposed adaptive controllers.
Zhang Y.,Xijing University |
Zhang Y.,Southwest Jiaotong University
Journal of Modern Transportation | Year: 2012
The aerodynamic drag on a train running in an evacuated tube varies with tube air pressure, train speed and shape, as well as blockage ratio. This paper uses numerical simulations to study the effects of different factors on the aerodynamic drag of a train running at subsonic speed in an evacuated tube. Firstly, we present the assumption of a steady state, two dimensional, incompressible viscous flow with lubricity wall conditions. Subsequently, based on the Navier-Stokes equation and the k-ε turbulent models, we calculate the aerodynamic drag imposed on the column train with a 3-meter diameter running under different pressure and blockage ratio conditions in an evacuated tube transportation (ETT) system. The simulation is performed with FLUENT 6.3 software package. An analyses of the simulation results suggest that the blockage ratio for ETT should be in the range of 0.25-0.7, and the tube internal diameter in the range of 2-4 m, with the feasible vacuum pressure in the range of 1-10000 Pa for the future subsonic ETT trains. © 2012 JMT. All rights reserved.
Quan H.W.,Xijing University
Applied Mechanics and Materials | Year: 2013
In bearings-only target localization, observer path have an important effect on the accuracy of target localization. Based on the analysis of Fisher information matrix, an optimal approach to designing observer path is proposed. Observer path derived from the step-by-step optimal algorithm only depends on observer's initial states and state constraints. The optimal path resulted with step-by-step algorithm is demonstrated by computer simulation. Compared with traditional methods, our algorithm is not limited to the number of observations as well as terminating conditions. © (2013) Trans Tech Publications, Switzerland.