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Search Results: 1 - 10 of 133552 matches for " LI Rui "
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New Business Model for Company toWin the Competition  [PDF]
Yingpeng Li, Rui Yang
American Journal of Industrial and Business Management (AJIBM) , 2014, DOI: 10.4236/ajibm.2014.44026
Abstract:

With the rise and development of e-commerce, a huge impact is given on traditional retailing. Nowadays the retailing e-commerce competition is very fierce. In this paper nine possible developing directions of retailing e-commerce in future are discussed. By using interpretative structural modeling the direct correlation of these nine directions is analyzed, and then the development trend is divided into five stages involved the stage of mobile e-commerce retailing.

Quality inspection of clinical research in traditional Chinese medicine
Rui LI
Zhong Xi Yi Jie He Xue Bao , 2010,
Abstract: Beginning with 4-level quality control measures of clinical research in traditional Chinese medicine (TCM), we elaborated the implementation process and demands of quality control measures of each level, including quality control, monitoring, auditing, and inspection. On the basis of joint inspection experience of 41 projects of the “Prevention and Treatment of Difficult and Complicated Diseases of TCM” plan of the “11th Five-year National Key Technology R&D Program”, we analyzed the ensuring effect of 4-level quality control system and joint inspection model, and then pointed out the existing problems in the executing process of quality control system at different levels and joint inspection model. Finally we investigated what should be revised in the quality control system and joint inspection model, thus providing the theoretical support for quality inspection improvement of TCM clinical research.
Pseudo Slice Energy Spread in Dynamics of Electron Beams Moving through Magnetic Bends
Rui Li
Physics , 2014,
Abstract: In the previous canonical formulation of beam dynamics for an electron bunch moving ultrarelativistically through magnetic bending systems, we have shown that the transverse dynamics equation for a particle in the bunch has a driving term which behaves as the centrifugal force caused by the particle's initial potential energy due to collective particle interactions within the bunch. As a result, the initial potential energy at the entrance of a bending system, which we call pseudo (kinetic) energy, is indistinguishable from the usual kinetic energy offset from the design energy in its perturbation to particle optics through dispersion and momentum compaction. In this paper, in identifying this centrifugal force on particles as the remnant of the CSR cancellation effect in transverse particle dynamics, we show how the dynamics equation in terms of the canonical momentum for beam motion on a curved orbit is related to the Panofsky-Wenzel theorem for wakefields for beam motion on a straight path. It is shown that the effect of pseudo energy spread can be measurable only for a high-peak-current bunch when the pseudo slice energy spread is appreciable compared to the slice kinetic energy spread. The implication of the pseudo slice energy spread for bunch dynamics in magnetic bends is discussed.
Hyperfine interaction mediated electric-dipole spin resonance: The role of the frequency modulation
Rui Li
Physics , 2015,
Abstract: The electron spin in semiconductor quantum dot can be coherently controlled by an external electric field, an effect called electric-dipole spin resonance (EDSR). There are several mechanisms underlie the EDSR effect, among which there is a hyperfine mechanism, where the spin-electric coupling is mediated by the electron-nucleus hyperfine interaction. Here, we investigate the influence of the frequency modulation (FM) on the spin-flip efficiency. Our results reveal that FM plays an important role in the hyperfine mechanism. Without FM, the electric field almost cannot flip the electron spin, the spin-flip probability is only about 20%. While under the FM, the spin- flip probability can be improved approximately to 70%. Especially, we find that the modulation amplitude has a lower bound, which is related to the width of the fluctuated hyperfine field.
Baculovirus Mediated Experimental Research on Targeted Egr1-Kringle 5 Gene Radiotherapy in Lung Adenocarcinoma  [PDF]
Haoping Xu, Rui Guo, Biao Li
Journal of Cancer Therapy (JCT) , 2012, DOI: 10.4236/jct.2012.324052
Abstract: Objective: To investigate the feasibility of temporally and spatially restricted Kringle5 expression induced by radiation, as well as the dual effect of radiotherapy and antiangiogenic therapy in lung adenocarcinoma in vitro. Methods: We first constructed recombinant baculovirus vectors containing Egr1 promoter and human plasminogen Kringle5 gene (rhK5), then transfected them into lung adenocarcinoma cells (A549). Transfect efficiency of the baculovirus for gene transfer in A549 cells and the activity of Egr1 promoter induced by X-radiation were detected by fluorescence microscopy. The rhK5 mRNA transcription and rhK5 protein expression were detected by Real-time PCR and Western blot assay, respectively. The apoptosis asssay of human umbilical veins endothelial cells (HUVEC) was analyzed by flow cytometry. Results: The recombinant baculovirus were successfully transfected into A549 and HUVEC cells. As for the temporal regulation, the rhK5 mRNA transcription and rhK5 protein expression were elevated with the irradiation time significantly. And the HUVEC apoptotic percentage increased in relation to the irradiation time as well. As for the spatial regulation, rhK5 mRNA transcription level of A549 cell lines transfected with recombinant baculovirus Egr1-K5 was significantly higher than that of control groups after the same dose of X-radiation. When we analyzed the dose and frequency of X-radiation, no difference was observed among each dose after continuously three-times of irradiation. Conclusion: Baculovirus-mediated Egr1-K5 can be used in gene radiotherapy for its temporary and spatial controllable rhK5 expression by X-radiation and the consequent HUVEC apoptosis in vitro study. And low dose and more times of irradiation might be more effective. It would provide a promising way for the tumor treatment.
On Cubic Nonsymmetric Cayley Graphs  [PDF]
Jingjian Li, Bengong Lou, Rui Wang
Open Journal of Discrete Mathematics (OJDM) , 2013, DOI: 10.4236/ojdm.2013.31008
Abstract: Let \"\" be a connected Cayley graph of group G, then Γ is called normal if the right regular representation of G is a normal subgroup of , the full automorphism group of Γ. For the case where G is a finite nonabelian simple group and Γ is symmetric cubic Cayley graph, Caiheng Li and Shangjin Xu proved that Γ is normal with only two exceptions. Since then, the normality of nonsymmetric cubic Cayley graph of nonabelian simple group aroused strong interest of people. So far such graphs which have been known are all normal. Then people conjecture that all of such graphs are either normal or the Cayley subset consists of involutions. In this paper we give an negative answer by two counterexamples. As far as we know these are the first examples for the non-normal cubic nonsymmetric Cayley graphs of finite nonabelian simple groups.
Application of Peps in Stress Analysis of Nuclear Piping  [PDF]
Rui Liu, Zhiwei Fu, Tieping Li
Journal of Applied Mathematics and Physics (JAMP) , 2013, DOI: 10.4236/jamp.2013.16012
Abstract: According to the nuclear safety regulations, this paper discusses the mechanical analysis method for piping system. Peps program has advantages of stress analysis and evaluation for nuclear piping. First, this paper introduces the Peps software, and discusses the process of stress analysis and evaluation for nuclear piping using the general finite element software; Secondly, taking nuclear class 2/3 piping system as an example, it uses Peps4.0 program to calculate the piping stress in variety of working conditions, such as weight, pressure, thermal expansion, earthquake, time-history force, and etc. Finally, the paper calculates the maximum stress and stress ratio according to the ASME.
Microfluidic Approaches for Cancer Cell Separation: Review  [PDF]
Omer Osman Saeed, Rui Li, Yulin Deng
Journal of Biomedical Science and Engineering (JBiSE) , 2014, DOI: 10.4236/jbise.2014.712098
Abstract: This article reviews the recent developments in microfluidic technologies for in vitro cancer diagnosis. We summarize the working principles and experimental results of microfluidic platforms for cancer cell detection, and separation based on magnetic activated micro-sorting, and differences in cellular biophysics (e.g., cell size and dielectrophoresis (DEP)).
Capability of TCSC on SSR Mitigation  [PDF]
Rui Zheng, Gen Li, Jun Liang
Journal of Power and Energy Engineering (JPEE) , 2015, DOI: 10.4236/jpee.2015.34032
Abstract:

TCSC (Thyristor-Controlled Series Compensator) has been used in modern power systems to increase power transfer and system stability. Besides, due to its controllable feature, TCSC has been used to work as a solution to sub-synchronous resonance (SSR) problems. However, it is not clear so far whether TCSC’s inherent characteristic can avoid SSR and its effectiveness for SSR damping. In this paper, an equivalent circuit of TCSC is used to better understand how TCSC performs at sub-synchronous frequency ranges. Therefore, interactions of TCSC behaviors and SSR components can be viewed individually. The effects of TCSC operation interfered by sub-synchronous components are discussed. Results show that TCSC has the capability to damp SSR, but this capability can be deteriorated if TCSC firing logic cannot be effectively maintained.

Fluid Flow and Heat Transfer Charateristics in a 180-deg Round Turned Channel with a Perforated Divider  [PDF]
Rui Xu, Rui Xu, Jinliang Hou, Li Wang, Yanfei Yu, Jiaxing Wei, Changfeng Li
Journal of Applied Mathematics and Physics (JAMP) , 2014, DOI: 10.4236/jamp.2014.26049
Abstract:

This study provided a new configuration of the 180-deg round turned channel with a perforated divider, as well as numerically investigated the effect of perforations, including the diameter of perforation and the angel of perforation, on the fluid flow and heat transfer. The numerical results appeared in good agreement with previous experimental data under the same operating conditions. The results indicated that large size and positive angle of perforation changed the fluid flow pattern and the local Nusselt-number distribution fundamentally. It is noteworthy that a more uniform distribution of Nusselt-number was achieved by increasing the diameter of perforation.

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