Weyl semimetals(WSMs)have recently attracted considerable research attention because of their remarkable optical and electrical properties.In this study,we investigate the near-field radiative heat transfer(NFRHT)betw...Weyl semimetals(WSMs)have recently attracted considerable research attention because of their remarkable optical and electrical properties.In this study,we investigate the near-field radiative heat transfer(NFRHT)between graphene-covered Weyl slabs,particularly focusing on the supported coupled surface plasmon polaritons(SPPs).Unlike bare Weyl slabs where the epsilon-near-zero(ENZ)effect contributes the most to the NFRHT,adding a monolayer graphene sheet yields coupled SPPs,i.e.,the coupling of graphene SPPs(GSPPs)and Weyl SPPs(WSPPs),which dominates the NFRHT.The graphene sheet greatly suppresses the ENZ effect by compressing the parallel wavevector,thereby enabling the heat transfer coefficient(HTC)to be significantly changed.Further,for the graphene-covered magnetic Weyl slab configuration,an increase in the number of Weyl nodes suppresses the SPP coupling and ENZ effect,thereby weakening the NFRHT with a regulation ratio of 4.4 whereas an increase in the Fermi level slightly influences the NFRHT.Several typical heterostructures are also proposed for comparison,and results show that a mono-cell structure has the largest total HTC.Our findings will facilitate the understanding of surface plasmon-coupled radiative heat transfer and enable opportunities in energy harvesting and thermal management at the nanoscale based on WSM-based systems.展开更多
OBJECTIVE： To determine the effectiveness of modified Sanhuang Xiexin Tang （SHXXT） plus additional herbs （MSAH） combined with ＂standard tri- ple therapy＂ for eradication of Helicobacter pylori （H. pylori） and...OBJECTIVE： To determine the effectiveness of modified Sanhuang Xiexin Tang （SHXXT） plus additional herbs （MSAH） combined with ＂standard tri- ple therapy＂ for eradication of Helicobacter pylori （H. pylori） and amelioration of related symptoms in comparison with standard triple and standard quadruple therapies. METHODS： From October 2015 to May 2016, we recruited patients with dyspepsia symptoms con- firmed to have H. pylori infection by the ^13C urea breath test in our outpatient clinic. Patients were randomly divided into three treatment groups： Nexium standard triple therapy （group A, EAC）, Nexium standard quadruple therapy （group B, EBAC）, or Nexium standard triple therapy combined with MSAH （group C; EAC＋MSAH）. Comparisons of H. pylori eradication and symptom amelioration rates were made among the three groups at 2 or 6 weeks after group assignment. RESULTS： There was no difference in H. pylori eradication rates between groups B （EBAC） and C （EAC＋ MSAH） （P = 0.486）, and eradication rates in groups B and C were significantly higher than that in group A （EAC） （P Av, e = 0.001; P AvsC= 0.003）. There was no difference in the total symptom score among the groups before treatment. In all groups, the total symptom scores after treatment （2 or 6 weeks after group assignment） were significantly lower than those before treatment （P 〈 0.001 for all）. However, group C （EAC ＋ MSAH） demonstrated superior total symptom scores and symptom amelioration rates than groups A （EAC） and B （EBAC）. Group B also demonstrated better scores and rates than group A. There was no difference in symptom amelioration rates at 2 and 6 weeks within each group. CONCLUSION： There is no difference between MSAH combined with standard triple therapy and standard quadruple therapy containing bismuth with regard to H. pylori eradication rate. However, MSAH combined with standard triple therapy has a higher symptom amelioration rate and therefore appears to be an ideal treatment scheme for H. pyIori eradication.展开更多
基金supported by the Startup Program at Wuhan Institute of Technology(Grant No.K2021026)the Open Foundation of State Key Laboratory of Coal Combustion(Grant No.FSKLCCA2303)。
文摘Weyl semimetals(WSMs)have recently attracted considerable research attention because of their remarkable optical and electrical properties.In this study,we investigate the near-field radiative heat transfer(NFRHT)between graphene-covered Weyl slabs,particularly focusing on the supported coupled surface plasmon polaritons(SPPs).Unlike bare Weyl slabs where the epsilon-near-zero(ENZ)effect contributes the most to the NFRHT,adding a monolayer graphene sheet yields coupled SPPs,i.e.,the coupling of graphene SPPs(GSPPs)and Weyl SPPs(WSPPs),which dominates the NFRHT.The graphene sheet greatly suppresses the ENZ effect by compressing the parallel wavevector,thereby enabling the heat transfer coefficient(HTC)to be significantly changed.Further,for the graphene-covered magnetic Weyl slab configuration,an increase in the number of Weyl nodes suppresses the SPP coupling and ENZ effect,thereby weakening the NFRHT with a regulation ratio of 4.4 whereas an increase in the Fermi level slightly influences the NFRHT.Several typical heterostructures are also proposed for comparison,and results show that a mono-cell structure has the largest total HTC.Our findings will facilitate the understanding of surface plasmon-coupled radiative heat transfer and enable opportunities in energy harvesting and thermal management at the nanoscale based on WSM-based systems.
文摘OBJECTIVE： To determine the effectiveness of modified Sanhuang Xiexin Tang （SHXXT） plus additional herbs （MSAH） combined with ＂standard tri- ple therapy＂ for eradication of Helicobacter pylori （H. pylori） and amelioration of related symptoms in comparison with standard triple and standard quadruple therapies. METHODS： From October 2015 to May 2016, we recruited patients with dyspepsia symptoms con- firmed to have H. pylori infection by the ^13C urea breath test in our outpatient clinic. Patients were randomly divided into three treatment groups： Nexium standard triple therapy （group A, EAC）, Nexium standard quadruple therapy （group B, EBAC）, or Nexium standard triple therapy combined with MSAH （group C; EAC＋MSAH）. Comparisons of H. pylori eradication and symptom amelioration rates were made among the three groups at 2 or 6 weeks after group assignment. RESULTS： There was no difference in H. pylori eradication rates between groups B （EBAC） and C （EAC＋ MSAH） （P = 0.486）, and eradication rates in groups B and C were significantly higher than that in group A （EAC） （P Av, e = 0.001; P AvsC= 0.003）. There was no difference in the total symptom score among the groups before treatment. In all groups, the total symptom scores after treatment （2 or 6 weeks after group assignment） were significantly lower than those before treatment （P 〈 0.001 for all）. However, group C （EAC ＋ MSAH） demonstrated superior total symptom scores and symptom amelioration rates than groups A （EAC） and B （EBAC）. Group B also demonstrated better scores and rates than group A. There was no difference in symptom amelioration rates at 2 and 6 weeks within each group. CONCLUSION： There is no difference between MSAH combined with standard triple therapy and standard quadruple therapy containing bismuth with regard to H. pylori eradication rate. However, MSAH combined with standard triple therapy has a higher symptom amelioration rate and therefore appears to be an ideal treatment scheme for H. pyIori eradication.
