Yantai, China
Yantai, China

Yantai University is a public university founded in 1984 with the assistance of Peking University and Tsinghua University in Yantai, Shandong, China. Wikipedia.

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Zhang Z.,Yantai University
Nonlinear Analysis: Real World Applications | Year: 2017

This paper is concerned with exact asymptotic behavior near the boundary of large solutions to quasilinear elliptic equations △pu(x)=b(x)f(u(x)),x∈Ω, where Ω is a bounded smooth domain in RN, △pu=div(|∇u|p−2∇u) with p<1, and b∈C(Ω) is nonnegative in Ω, but may be vanishing or appropriately singular (including critical singular) on the boundary. We give one new condition near infinity on f which plays a crucial role in the boundary behavior of solutions. © 2016 Elsevier Ltd


Han X.-F.,Yantai University | Wang L.,Yantai University | Wang L.,University of Valencia
Physical Review D - Particles, Fields, Gravitation and Cosmology | Year: 2016

We examine the implication of the 750 GeV diphoton resonance on the two-Higgs-doublet model by imposing various theoretical and experimental constraints. The production rate of the two-Higgs-doublet model is smaller than the cross section observed at the LHC by 2 orders of magnitude. In order to accommodate the 750 GeV diphoton resonance, we extend the two-Higgs-doublet model by introducing additional Higgs fields, and focus on two different extensions: an inert complex Higgs triplet and a real scalar septuplet. As the 125 GeV Higgs is in agreement with the observed data, the production rate for the 750 GeV diphoton resonance can be enhanced to 0.6 fb for the former and 4.5 fb for the latter. The results of the latter are well consistent with the 750 GeV diphoton excess at the LHC. © 2016 American Physical Society.


Wang L.,Yantai University | Han X.-F.,Yantai University
Physical Review D - Particles, Fields, Gravitation and Cosmology | Year: 2012

Some vectorlike quarks are added to the Higgs triplet model with the motivation of fitting the recent Higgs boson data released by LHC and Tevatron collaborations. These vectorlike quarks can suppress the cross section of gg→h sizably, while the charged scalars, especially for the doubly charged scalar, can enhance Br(h→γγ) more sizably. Besides, the Higgs couplings to WW, ZZ, and light fermions can be the same as their standard model (SM) values. Thus, the model will enhance the Higgs production rates into γγ and jjγγ, while those for WW *, ZZ *, and ττ̄ at the LHC are reduced relative to their SM predictions. The Higgs production rate into Vbb̄ at the Tevatron is the same as the SM prediction. © 2012 American Physical Society.


Wang L.,Yantai University | Han X.-F.,Yantai University
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | Year: 2014

Due to the strong constraint from the LUX experiment, the scalar portal dark matter cannot generally explain a gamma-ray excess in the galactic center by the annihilation of dark matter to bb. With the motivation of eliminating the tension, we add a scalar dark matter to the aligned two-Higgs-doublet model, and focus on a simplified scenario, which has two main characteristics: (i) The heavy CP-even Higgs is the discovered 125 GeV Higgs boson, which has the same couplings to the gauge bosons and fermions as the SM Higgs. (ii) Only the light CP-even Higgs mediates the dark matter interactions with SM particles, which have no couplings to WW and ZZ, but have the independent couplings to the up-type quarks, down-type quarks and charged leptons. We find that the tension between 〈σv〉SS→bb- and the constraint from LUX induced by the scalar portal dark matter can go away for the isospin-violating dark matter-nucleon coupling with -1.0


Wang L.,Yantai University | Han X.-F.,Yantai University
Physical Review D - Particles, Fields, Gravitation and Cosmology | Year: 2013

With a discrete Z2 symmetry being imposed, we introduce a real singlet scalar S to the Higgs triplet model with the motivation of explaining the tentative evidence for a line spectral feature at Eγ=130 GeV in the Fermi Large Area Telescope data. The model can naturally satisfy the experimental constraints of the dark matter relic density and direct detection data from Xenon100. The doubly charged and single charged scalars can enhance the annihilation cross section of SS→γγ via the one-loop contributions and give negligible contributions to the relic density. âŸ̈σv⟩SS→γγ for mS=130 GeV can reach O(1)×10-27 cm3 s -1 for the small charged scalars' masses and the coupling constant that is larger than 1. Also, this model predicts a second photon peak at 114 GeV from the annihilation SS→γZ, and the cross section is approximately 0.76 times that of SS→γγ, which is below the upper limit reported by Fermi Large Area Telescope. Finally, the light charged scalars can enhance the LHC diphoton Higgs rate and make it consistent with the experimental data reported by ATLAS and CMS. © 2013 American Physical Society.


The ABC phenomenon is described as a syndrome of accelerated clearance of polyethylene glycol (PEG)-modified liposomes from the bloodstream when repeatedly injected, with their increased accumulation in the liver and spleen. To clarify this immune response phenomenon, we evaluated a novel modified pH-sensitive liposome with a cleavable double smart PEG-lipid derivative (mPEG-Hz-CHEMS). The ABC phenomenon in mice was brought about by repeated injection of conventional PEG-PE liposomes and was accompanied by a greatly increased uptake in the liver. However, a slight ABC phenomenon was brought about by repeated injection of mPEG-CHEMS liposomes and was accompanied by only a slightly increased uptake in the liver, and repeated injection of mPEG-Hz-CHEMS liposomes did not induce the ABC phenomenon and there was no increase in liver accumulation. This finding indicates that the cleavable mPEG-Hz-CHEMS derivative could lessen or eliminate the ABC phenomenon induced by repeated injection of PEGylated liposomes. This research has shed some light on a solution to the ABC phenomenon using a cleavable PEG-Hz-CHEMS derivative encapsulated in nanoparticles.


Wang J.-P.,Yantai University
Physical Review B - Condensed Matter and Materials Physics | Year: 2010

Thermodynamic stability of composite vortex in a two-component superconductor is investigated by the Ginzburg-Landau theory. The predicted nature of these vortices has recently attracted much attention. Here we consider axially symmetric quantized vortex and show that the stability of vortex depends on three independent dimensionless parameters: κ1, κ2, and κξ, where κi (i=1,2) is the Ginzburg-Landau parameter of individual component, κξ = ξ1/ξ2 is the ratio of two coherence lengths. We also show that there exists thermodynamically stable vortex in a two-component superconductor over a range of these three parameters. © 2010 The American Physical Society.


Patent
Yantai University | Date: 2015-05-22

The present invention relates to a benzothiazole derivative of formula 1 or a pharmaceutically acceptable salt thereof and a process for preparation thereof. The present invention also relates to a pharmaceutical composition comprising the compounds and the use of the compounds in the preparation of an anti-tumor medicament.


Patent
Yantai University | Date: 2015-05-22

The present invention relates to a pyrazolo[1,5-a]pyrimidine derivative of general formula 1 and a pharmaceutically acceptable salt thereof. The present invention also relates to use of compounds of formula 1 in the preparation of an anti-tumor medicament.


The present invention relates to a compound as represented by formula (I), which is a condensation product of a theanine derivative and a carboxylic acid coumarin derivative, compounds as represented by formula (II) and formula (III), both of which are intermediates of the condensation product, a method for preparing these compounds, a pharmaceutical composition comprising the compounds, and a use thereof in preparing a medicament for prevention and treatment of tumors, inflammation, cardiovascular diseases, immune deficiency diseases and the like.

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