目的调查人口流动无偶生活状态对广州市白云区居民心脑血管病死亡率的影响。方法对白云区三家医院近十年所有因循环系统死亡的病例进行统计学分析。结果心脑血管病患者死亡率与流动人口数量变化趋势高度一致,死亡率曲线拐点滞后1～2年...目的调查人口流动无偶生活状态对广州市白云区居民心脑血管病死亡率的影响。方法对白云区三家医院近十年所有因循环系统死亡的病例进行统计学分析。结果心脑血管病患者死亡率与流动人口数量变化趋势高度一致,死亡率曲线拐点滞后1～2年与流动人口数据曲线拐点良好对应(R=0.784, P <0.01)。无偶组60岁以下男性死亡比例高于女性,亦高于已婚男性。病程短于一年期者比例达到35%,同样男性死亡比例高于女性。无偶男性约有45%在一年内死亡(P <0.05)。结论白云区流动人口增长与心脑血管病患者死亡率上升呈正相关,无偶生活状态对于心脑血管病患者,尤其对男性患者存活率以及存活期有着实质性影响。加大对流动人口宣传与教育,对无偶人群,尤其是男性进行相应的健康体检,及早诊治是防控重点。展开更多
We investigate the influence of the Stark shift on the entanglement transfer from the two-mode squeezed vacuum state field to two spatially separated atoms in two-photon processes. Our results show that the Stark shif...We investigate the influence of the Stark shift on the entanglement transfer from the two-mode squeezed vacuum state field to two spatially separated atoms in two-photon processes. Our results show that the Stark shift plays an important role in such entanglement transfer. We find that when the Stark shift parameter r is small, the degree of entanglement between the two atoms increases with the increasing of the squeezing parameter ξ first, and after achieving its maximal value, the degree of entanglement will decrease to zero with the increasing of ξ; while for big r, E will increase with the increasing of ξ.展开更多
In this article, we take the vector charmonium-like state Y（4660） as a φ＇ fo（980） bound state （irrespective of the hadro-charmonium and the molecular state） tentatively, and study its mass using the QCD sum ru...In this article, we take the vector charmonium-like state Y（4660） as a φ＇ fo（980） bound state （irrespective of the hadro-charmonium and the molecular state） tentatively, and study its mass using the QCD sum rules. The numerical value My = 4.71 ±0.26 GeV is consistent with the experimental data. Considering the SU（3） symmetry of the light flavor quarks and the heavy quark symmetry, we also study the bound states φ＇a（400-1200）, γ′″ fo（980）, and γ′″σ（400-1200） with the QCD sum rules, and make reasonable predictions for their masses.展开更多
文摘目的调查人口流动无偶生活状态对广州市白云区居民心脑血管病死亡率的影响。方法对白云区三家医院近十年所有因循环系统死亡的病例进行统计学分析。结果心脑血管病患者死亡率与流动人口数量变化趋势高度一致,死亡率曲线拐点滞后1～2年与流动人口数据曲线拐点良好对应(R=0.784, P <0.01)。无偶组60岁以下男性死亡比例高于女性,亦高于已婚男性。病程短于一年期者比例达到35%,同样男性死亡比例高于女性。无偶男性约有45%在一年内死亡(P <0.05)。结论白云区流动人口增长与心脑血管病患者死亡率上升呈正相关,无偶生活状态对于心脑血管病患者,尤其对男性患者存活率以及存活期有着实质性影响。加大对流动人口宣传与教育,对无偶人群,尤其是男性进行相应的健康体检,及早诊治是防控重点。
基金The project supported by National Natural Science Foundation of China under Grant No.10374007
文摘We investigate the influence of the Stark shift on the entanglement transfer from the two-mode squeezed vacuum state field to two spatially separated atoms in two-photon processes. Our results show that the Stark shift plays an important role in such entanglement transfer. We find that when the Stark shift parameter r is small, the degree of entanglement between the two atoms increases with the increasing of the squeezing parameter ξ first, and after achieving its maximal value, the degree of entanglement will decrease to zero with the increasing of ξ; while for big r, E will increase with the increasing of ξ.
基金Supported by National Natural Science Foundation under Grant No.10775051 Program for New Century Excellent Talents in University under Grant No.NCET-07-0282 Project Supported by Chinese Universities Scientific Fund
文摘In this article, we take the vector charmonium-like state Y（4660） as a φ＇ fo（980） bound state （irrespective of the hadro-charmonium and the molecular state） tentatively, and study its mass using the QCD sum rules. The numerical value My = 4.71 ±0.26 GeV is consistent with the experimental data. Considering the SU（3） symmetry of the light flavor quarks and the heavy quark symmetry, we also study the bound states φ＇a（400-1200）, γ′″ fo（980）, and γ′″σ（400-1200） with the QCD sum rules, and make reasonable predictions for their masses.
