China’s online ride-hailing industry has been growing continuously,as people’s travel needs become diversified.At present,city dwellers normally choose ride-hailing services for their daily travel.During the first q...China’s online ride-hailing industry has been growing continuously,as people’s travel needs become diversified.At present,city dwellers normally choose ride-hailing services for their daily travel.During the first quarter of 2023,the number of ride-hailing orders have been increasing fast,with a growth rate of 14.1%,13.3%and 9.7%for each month when compared with the previous month.展开更多
An array of banners with Chinese characters hailing the exceptional medical skills and kind heartedness of medical workers adorned the wall of a crowded section of the modern medical building of Cambodia-China Friends...An array of banners with Chinese characters hailing the exceptional medical skills and kind heartedness of medical workers adorned the wall of a crowded section of the modern medical building of Cambodia-China Friendship Preah Kossamak Hospital in Phnom Penh.The banners were presented by Cambodian patients,and this place is the first traditional Chinese medicine(TCM)clinic established by the Chinese pandemic-aid TCM medical team in a Cambodian public hospital.展开更多
Quantum dynamical maps are defined and studied for quantum statistical physics based on Orlicz spaces.This complements earlier work[26]where we made a strong case for the assertion that statistical physics of regular ...Quantum dynamical maps are defined and studied for quantum statistical physics based on Orlicz spaces.This complements earlier work[26]where we made a strong case for the assertion that statistical physics of regular systems should properly be based on the pair of Orlicz spaces(Lcosh-1,L log(L+1)),since this framework gives a better description of regular observables,and also allows for a well-defined entropy function.In the present paper we"complete"the picture by addressing the issue of the dynamics of such a system,as described by a Markov semigroup corresponding to some Dirichlet form(see[4,13,14]).Specifically,we show that even in the most general non-commutative contexts,completely positive Markov maps satisfying a natural Det ailed Balance condition canonically admit an action on a large class of quantum Orlicz spaces.This is achieved by the development of a new interpolation strategy for extending the action of such maps to the appropriate intermediate spaces of the pair(L∞,L1).As a consequence,we obtain that completely positive quantum Markov dynamics naturally extends to the context proposed in[26].展开更多
Amide ionic liquids （MLs）/L-proline synergistic catalyzed Mannich reactions of isovaleraldehyde, methyl ketones, and aromatic amines were carried out in moderate to high yields （ up to 96% ） and high stereo select...Amide ionic liquids （MLs）/L-proline synergistic catalyzed Mannich reactions of isovaleraldehyde, methyl ketones, and aromatic amines were carried out in moderate to high yields （ up to 96% ） and high stereo selectivities （ 〉99% e. e. ）. The products were easily isolated by extraction; and the catalyst system was readily recycled at least thrice without significant loss of efficiency. The scope of the substrates was studied and the interpretation of the manifest improvement of the reaction rates and enantio-selectivity of the novel catalyst system was speculated.展开更多
文摘China’s online ride-hailing industry has been growing continuously,as people’s travel needs become diversified.At present,city dwellers normally choose ride-hailing services for their daily travel.During the first quarter of 2023,the number of ride-hailing orders have been increasing fast,with a growth rate of 14.1%,13.3%and 9.7%for each month when compared with the previous month.
文摘An array of banners with Chinese characters hailing the exceptional medical skills and kind heartedness of medical workers adorned the wall of a crowded section of the modern medical building of Cambodia-China Friendship Preah Kossamak Hospital in Phnom Penh.The banners were presented by Cambodian patients,and this place is the first traditional Chinese medicine(TCM)clinic established by the Chinese pandemic-aid TCM medical team in a Cambodian public hospital.
基金supported by the National Research Foundation(IPRR Grant 96128).
文摘Quantum dynamical maps are defined and studied for quantum statistical physics based on Orlicz spaces.This complements earlier work[26]where we made a strong case for the assertion that statistical physics of regular systems should properly be based on the pair of Orlicz spaces(Lcosh-1,L log(L+1)),since this framework gives a better description of regular observables,and also allows for a well-defined entropy function.In the present paper we"complete"the picture by addressing the issue of the dynamics of such a system,as described by a Markov semigroup corresponding to some Dirichlet form(see[4,13,14]).Specifically,we show that even in the most general non-commutative contexts,completely positive Markov maps satisfying a natural Det ailed Balance condition canonically admit an action on a large class of quantum Orlicz spaces.This is achieved by the development of a new interpolation strategy for extending the action of such maps to the appropriate intermediate spaces of the pair(L∞,L1).As a consequence,we obtain that completely positive quantum Markov dynamics naturally extends to the context proposed in[26].
基金the National Natural Science Foundation of China(No 20576026)State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology(No 200402)+2 种基金Science & Technology Office of Hebei Province(No 04213036)Foundation of HebeiUniversity of Science and Technology(No XL2006021)Environmental Engineering Key Subject of Hebei Province
文摘Amide ionic liquids （MLs）/L-proline synergistic catalyzed Mannich reactions of isovaleraldehyde, methyl ketones, and aromatic amines were carried out in moderate to high yields （ up to 96% ） and high stereo selectivities （ 〉99% e. e. ）. The products were easily isolated by extraction; and the catalyst system was readily recycled at least thrice without significant loss of efficiency. The scope of the substrates was studied and the interpretation of the manifest improvement of the reaction rates and enantio-selectivity of the novel catalyst system was speculated.
