A recently discovered family of kagome lattice materials,AV_(3)Sb_(5)(A=K,Rb,Cs),has attracted great interest,especiallyin the debate over their dominant superconducting pairing symmetry.To explore this issue,we study...A recently discovered family of kagome lattice materials,AV_(3)Sb_(5)(A=K,Rb,Cs),has attracted great interest,especiallyin the debate over their dominant superconducting pairing symmetry.To explore this issue,we study the superconductingpairing behavior within the kagome-lattice Hubbard model through the constrained path Monte Carlo method.It isfound that doping around the Dirac point generates a dominant next-nearest-neighbor-d pairing symmetry driven by on-siteCoulomb interaction U.However,when considering the nearest-neighbor interaction V,it may induce nearest-neighbor-ppairing to become the preferred pairing symmetry.Our results provide useful information to identify the dominant superconductingpairing symmetry in the AV_(3)Sb_(5)family.展开更多
A novel method of enzymatic hydrolysis was developed in this paper to produce a high conversion yield and hydrolysis rate.A comparison was described by using three methods of enzymatic hydrolysis and adsorption of ste...A novel method of enzymatic hydrolysis was developed in this paper to produce a high conversion yield and hydrolysis rate.A comparison was described by using three methods of enzymatic hydrolysis and adsorption of steam exploded straw(SEWS):shaking ball in the regime,shaking with stirrer bed,and static state.The most adequate filter-paper activity,speed and reaction time were 3.6×10^(-7) mol/(s·mL),150 r/min and 24 h,respectively,with the reducing sugar yield of 0.43.The results showed that the method of shaking ball produced the highest adsorption,conversion yields and hydrolysis rate of the enzyme.This might be due to the continuous frequency increase of enzyme adsorption and desorption on the substrate surface as well as the relieved end-product inhibition.The morphological variation of SEWS was characterized by environmental scanning electron microscopy(ESEM).展开更多
基金supported by Beijing Natural Science Foundation(Grant No.1242022).The numerical simulations in this work were performed at HSCC of Beijing Normal University.
文摘A recently discovered family of kagome lattice materials,AV_(3)Sb_(5)(A=K,Rb,Cs),has attracted great interest,especiallyin the debate over their dominant superconducting pairing symmetry.To explore this issue,we study the superconductingpairing behavior within the kagome-lattice Hubbard model through the constrained path Monte Carlo method.It isfound that doping around the Dirac point generates a dominant next-nearest-neighbor-d pairing symmetry driven by on-siteCoulomb interaction U.However,when considering the nearest-neighbor interaction V,it may induce nearest-neighbor-ppairing to become the preferred pairing symmetry.Our results provide useful information to identify the dominant superconductingpairing symmetry in the AV_(3)Sb_(5)family.
基金This work was supported by Grants from the National Basic Research Program of China(No.2004CB719700)Chinese Academy of Chinese Knowledge Innovation Program Important Direction Project(No.KJCX2-SW?206)Hi-Technology Research and Development Program of China(No.2003AA514023).
文摘A novel method of enzymatic hydrolysis was developed in this paper to produce a high conversion yield and hydrolysis rate.A comparison was described by using three methods of enzymatic hydrolysis and adsorption of steam exploded straw(SEWS):shaking ball in the regime,shaking with stirrer bed,and static state.The most adequate filter-paper activity,speed and reaction time were 3.6×10^(-7) mol/(s·mL),150 r/min and 24 h,respectively,with the reducing sugar yield of 0.43.The results showed that the method of shaking ball produced the highest adsorption,conversion yields and hydrolysis rate of the enzyme.This might be due to the continuous frequency increase of enzyme adsorption and desorption on the substrate surface as well as the relieved end-product inhibition.The morphological variation of SEWS was characterized by environmental scanning electron microscopy(ESEM).
