We show that the Farhi-Gutmann analog quantum search is a singular algorithm in the following sense: when the original driving Hamiltonian is perturbed slightly such that it is made of projections to the starting stat...We show that the Farhi-Gutmann analog quantum search is a singular algorithm in the following sense: when the original driving Hamiltonian is perturbed slightly such that it is made of projections to the starting state and to the target state with different energies,the maximum fidelity(transition probability)between the searching state and the target state is strictly less than 1 over the entire evolution period,and the first time to achieve this maximum fidelity is of order N~(1/2)/(1+cN)~(1/2),whose behavior depends crucially on whether c=0 or not(here N is the total number of items,and the original Farhi-Gutmann case corresponds to c=0).Moreover,when c≠0 and N tends to infinity,the maximum fidelity tends to zero,and the first time to achieve the maximum fidelity tends to a positive constant!The condition for guaranteeing the algorithm's efficiency is determined explicitly.展开更多
Malakoplakia is an uncommon chronic inflammatory disease usually affecting the urogenital tract and often associated with the infection due to?E. coli. It is characterised by the presence of Von Hansemann cells and in...Malakoplakia is an uncommon chronic inflammatory disease usually affecting the urogenital tract and often associated with the infection due to?E. coli. It is characterised by the presence of Von Hansemann cells and intracytoplasmic inclusion bodies called Michaelis-Gutmann Bodies. Testes are affected in 12% cases. The lesion mainly occurs in middle aged men, appearing clinically as epididymo-orchitis or testicular enlargement with fibrous consistency and some soft areas. Orchidectomy is the only way to differentiate the lesion from other malignant or infected processes. This is a case report of a young patient with testicular malakoplakia.展开更多
Aqueous Zn-based batteries are promising energy storage technology due to their low cost and high safety.However, the solvation structure of electrolyte leads to dendrite growth, parasitic reactions, and poor low-temp...Aqueous Zn-based batteries are promising energy storage technology due to their low cost and high safety.However, the solvation structure of electrolyte leads to dendrite growth, parasitic reactions, and poor low-temperature properties, limiting their practical application. Here, we report 1,2-propanediol(PG) electrolyte with a modulated solvation structure, which can suppress Zn dendrite growth and parasitic reactions. PG can break the interaction between H_(2)O molecules and the interaction between H_(2)O and Zn^(2+) due to the higher electron density of O and higher Gutmann donor number of PG than those of H_(2)O, which increase the H–O covalent bond strength, decrease the water activity and freezing point, and change the solvation structure of Zn^(2+). As a result, the battery exhibits high cycling stability(Zn//Zn battery cycle over 1000 h), high reversibility(Coulombic efficiency of 98.9%), high capacity properties(specific capacity of225 m A h g^(-1)at 5 A g^(-1), and capacity retention of 92.6% for5000 cycles), and excellent anti-freezing properties(specific capacity of 190 m A h g^(-1) at-20℃ over 500 cycles). This work provides a promising strategy for the development of highperformance aqueous zinc-ion batteries.展开更多
文摘We show that the Farhi-Gutmann analog quantum search is a singular algorithm in the following sense: when the original driving Hamiltonian is perturbed slightly such that it is made of projections to the starting state and to the target state with different energies,the maximum fidelity(transition probability)between the searching state and the target state is strictly less than 1 over the entire evolution period,and the first time to achieve this maximum fidelity is of order N~(1/2)/(1+cN)~(1/2),whose behavior depends crucially on whether c=0 or not(here N is the total number of items,and the original Farhi-Gutmann case corresponds to c=0).Moreover,when c≠0 and N tends to infinity,the maximum fidelity tends to zero,and the first time to achieve the maximum fidelity tends to a positive constant!The condition for guaranteeing the algorithm's efficiency is determined explicitly.
文摘Malakoplakia is an uncommon chronic inflammatory disease usually affecting the urogenital tract and often associated with the infection due to?E. coli. It is characterised by the presence of Von Hansemann cells and intracytoplasmic inclusion bodies called Michaelis-Gutmann Bodies. Testes are affected in 12% cases. The lesion mainly occurs in middle aged men, appearing clinically as epididymo-orchitis or testicular enlargement with fibrous consistency and some soft areas. Orchidectomy is the only way to differentiate the lesion from other malignant or infected processes. This is a case report of a young patient with testicular malakoplakia.
基金supported by the National Key R&D Program of China (2017YFE0133800)the CASHIPS Director’s Fund (YZJJ201902 and YZJJZX202018)Anhui Provincial Natural Science Foundation (1908085QB52 and 2008085ME135)。
文摘Aqueous Zn-based batteries are promising energy storage technology due to their low cost and high safety.However, the solvation structure of electrolyte leads to dendrite growth, parasitic reactions, and poor low-temperature properties, limiting their practical application. Here, we report 1,2-propanediol(PG) electrolyte with a modulated solvation structure, which can suppress Zn dendrite growth and parasitic reactions. PG can break the interaction between H_(2)O molecules and the interaction between H_(2)O and Zn^(2+) due to the higher electron density of O and higher Gutmann donor number of PG than those of H_(2)O, which increase the H–O covalent bond strength, decrease the water activity and freezing point, and change the solvation structure of Zn^(2+). As a result, the battery exhibits high cycling stability(Zn//Zn battery cycle over 1000 h), high reversibility(Coulombic efficiency of 98.9%), high capacity properties(specific capacity of225 m A h g^(-1)at 5 A g^(-1), and capacity retention of 92.6% for5000 cycles), and excellent anti-freezing properties(specific capacity of 190 m A h g^(-1) at-20℃ over 500 cycles). This work provides a promising strategy for the development of highperformance aqueous zinc-ion batteries.
