90 research outputs found
Photoproduction of Pentaquark and Chiral Symmetry Restoration in Hot and Dense Medium
The photoproduction rate of pentaquark is calculated in a hot and
dense medium. At high temperature and density, due to the restoration of chiral
symmetry, photoproduction energy threshold is increased. Above the thresold the
production cross section is strongly enhanced.Comment: 5 pages, 3 figure
Asymmetric Fermi Superfluid With Two Types Of Pairings
We investigate the phase diagram in the plane of temperature and chemical
potential mismatch for an asymmetric fermion superfluid with double- and
single-species pairings. There is no mixing of these two types of pairings at
fixed chemical potential, but the introduction of the single species pairing
cures the magnetic instability at low temperature.Comment: 6 pages, 1 figure. Proceedings of Poster Session, Quark Matter 2006,
November 14-20, 2006, Shanghai, P.R.Chin
High-order soliton evolution and pulse breaking-recovery in stretched ultrafast fiber lasers
We present a new pulse regime in a stretched ultrafast fiber laser based on numerical simulations. The pulse breaking due to high-order soliton evolution in the passive fiber is recovered to a smooth pulse in the gain fiber with normal dispersion. The new pulse regime formed by the two nonlinear processes makes the ultrafast fiber laser generate ultra-broadband, ultrashort duration, high energy and large breathing ratio pulses. Our work gives insights into the nonlinear dynamics in fiber lasers and has potential for a better design of the stretched fiber lasers
HMGA1 variant IVS5-13insC is associated with insulin resistance and type 2 diabetes: an updated meta-analysis
Background: High-mobility group A1 (HMGA1) polymorphism has been suspected as a gene variant associated with type 2 diabetes (T2D). However, conflicting outcomes have been reported. Objective: This meta-analysis aimed to predict the association between the HMGA1 variant IVS5-13insC and T2D. Methods: Statistical analyses were performed using Stata/SE 12.0 software. Results: A total of 11 case-control studies in 6 articles were included. Results suggested that the HMGA1 variant IVS5-13insC was associated with an increased risk of insulin resistance (OR = 0.61, 95% CI 0.56 to 0.66, P < 0.0001), T2D (OR = 0.67, 95% CI 0.61 to 0.73, P < 0.0001), particularly for Caucasians with increased risks of T2D (OR = 0.56, 95% CI 0.49 to 0.65, P < 0.0001) compared with wild-type subjects. Conclusion: This meta-analysis indicated that the HMGA1 variant IVS5-13insC can be a risk factor of T2D development, particularly among Caucasians. Significant risks were also found (Asian: OR = 0.74, 95% CI: 0.63 to 0.86, P < 0.0001, Hispanic-American: OR = 0.81, 95% CI: 0.65 to 1.01, P < 0.0001) in non-Caucasian population. However, ethnical studies should be conducted to reveal whether the HMGA1 variant IVS5-13insC is associated with an increased risk of T2D.Keywords: HMGA1, type 2 diabetes, insulin resistance, variant, meta-analysis
Asymmetric Fermion Superfluid with Inter- and Intra-Species Pairings
We investigate the phase structure of an asymmetric fermion superfluid with
inter- and intra-species pairings. The introduction of the intra-species
pairing mechanism in canonical ensemble changes significantly the phase diagram
and brings in a new state with coexisting inter- and intra-species pairings.
Different from the case with only inter-species pairing, all the fermion
excitations are fully gapped in the region with intra-species pairing.Comment: 5 pages, 4 figure
HMGA1 variant IVS5-13insC is associated with insulin resistance and type 2 diabetes: an updated meta-analysis
Background: High-mobility group A1 (HMGA1) polymorphism has been
suspected as a gene variant associated with type 2 diabetes (T2D).
However, conflicting outcomes have been reported. Objective: This
meta-analysis aimed to predict the association between the HMGA1
variant IVS5-13insC and T2D. Methods: Statistical analyses were
performed using Stata/SE 12.0 software. Results: A total of 11
case-control studies in 6 articles were included. Results suggested
that the HMGA1 variant IVS5-13insC was associated with an increased
risk of insulin resistance (OR = 0.61, 95% CI 0.56 to 0.66, P <
0.0001), T2D (OR = 0.67, 95% CI 0.61 to 0.73, P < 0.0001),
particularly for Caucasians with increased risks of T2D (OR = 0.56, 95%
CI 0.49 to 0.65, P < 0.0001) compared with wild-type subjects.
Conclusion: This meta-analysis indicated that the HMGA1 variant
IVS5-13insC can be a risk factor of T2D development, particularly among
Caucasians. Significant risks were also found (Asian: OR = 0.74, 95%
CI: 0.63 to 0.86, P < 0.0001, Hispanic-American: OR = 0.81, 95% CI:
0.65 to 1.01, P < 0.0001) in non-Caucasian population. However,
ethnical studies should be conducted to reveal whether the HMGA1
variant IVS5-13insC is associated with an increased risk of T2D
Meson Mixing in Pion Superfluid
We investigate meson mixing and meson coupling constants in pion superfluid
in the framework of two flavor NJL model at finite isospin density. The mixing
strength develops fast with increasing isospin chemical potential, and the
coupling constants in normal phase and in the pion superfluid phase behave very
differently.Comment: 6 pages, 4 figures. Updates from version 2: 1, Correct Some language
mistakes and Some errors in the cited references. 2, Rewrite the last
sentence in the summary to indicate a possible way to measure the
isospin-asymmetry related meson propertie
Preliminary research on the operation mode of virtual-real integration in fully-mechanized mining face based on industrial metaverse
The key to promoting intelligent construction is to integrate the digital twin technology form the operation mode of virtual and real integration. And the industrial metaverse based on digital twin is the future development direction of intelligent mining face. The concept of virtual and real integration operation mode of fully-mechanized mining face based on virtual reality-digital twin-cyber physical system-industrial metaverse is proposed. It has six connotation characteristics, such as display and off-line simulation, monitoring and auxiliary operation, online simulation and preview. It is an evolution process from low-level display simulation to high-level deep integration function. Finally, it have four abilities : the ability of reproduction mapping from real to virtual precision, the ability of reasoning and forecasting decision-making in virtual iteration, the ability of reproduction control from virtual to real, the ability of seamless cooperation between virtual and real human-computer, and the ability of lean management. The four capabilities of industrial metaverse and the key technologies to realize industrial metaverse are analyzed.Based on the existing monitoring, decision-making and control capabilities, AR remote assistance technology that can strengthen the cooperation ability between field operators and remote operators, robot cooperation technology that can strengthen the safety of operators, and virtual human technology that can use AI-driven operation in virtual space are integrated to build a hydraulic support adjusting experimental system based on industrial metaveise,and preliminary understanding of the application of industrial metaverse in coal mining
Effect of Chiral Symmetry Restoration on Pentaquark Mass and Width at Finite Temperature and Density
We investigate the effect of chiral phase transition on the pentaquark
mass and width at one-loop level of coupling at finite
temperature and density. The behavior of the mass, especially the width in
hadronic medium is dominated by the characteristics of chiral symmetry
restoration at high temperature and high density. The mass and width shifts of
positive-parity are much larger than that of negative-parity one,
which may be helpful to determine the parity of in high energy
nuclear collisions.Comment: 7 pages, 5 figure
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