The generalized transformation method is utilized to solve three-dimensional Nizhnik-Novikov-Veselov equation and construct a series of new exact solutions including kink-shaped and bell-shaped soliton solutions, trig...The generalized transformation method is utilized to solve three-dimensional Nizhnik-Novikov-Veselov equation and construct a series of new exact solutions including kink-shaped and bell-shaped soliton solutions, trigonometric function solutions, and Jacobi elliptic doubly periodic solutions. Among them, the Jacobi elliptic periodic wave solutions exactly degenerate to the soliton solutions at a certain limit condition. Compared with the existing tanh methods and Jacobi function method, the method we used here gives more general exact solutions without much extra effort.展开更多
This paper discusses the history of linguistics in the west, as well as the features, the spokesmen and the contributions of different schools in different times. The learners can understand the linguistic schools in ...This paper discusses the history of linguistics in the west, as well as the features, the spokesmen and the contributions of different schools in different times. The learners can understand the linguistic schools in the west by analyzing them and then improve their ability to analyze languages.展开更多
In this article, we have performed B3LYP/6-31＋G（d） calculations of geometrical and reaction enthalpies of antioxidant mechanisms for ADPHT 1-4 （3-alkyl-4-phenylacetylamino-lH-1,2,4-triazol-5-ones） and its derivat...In this article, we have performed B3LYP/6-31＋G（d） calculations of geometrical and reaction enthalpies of antioxidant mechanisms for ADPHT 1-4 （3-alkyl-4-phenylacetylamino-lH-1,2,4-triazol-5-ones） and its derivatives： HAT （hydrogen atom transfer）, SET-PT （single electron transfer-proton transfer） and SPLET （sequential proton-loss electron transfer） were investigated in gas and solution-phases. Solvent contribution to enthalpies was computed employing integral equation formalism IEF-PCM （integral equation formalism method） method. It turned out that the lowest BDEs （bond dissociation energies） is obtained for C-H bonds due to captodative effect in various media. Results indicate that HAT mechanism represents the most anticipated process in gas-phase from thermodynamic point of view. But, the SPLET represents the thermodynamically preferred reaction pathway in solvents （2-propanol, acetonitrile, DMF （N,N-dimethylformamide） and water）. The authors showed that bond dissociation energies, IP （ionization potential） and PA （proton affinity） are sufficient to evaluate the thermodynamically preferred mechanism.展开更多
Recent studies have found many antisense non-coding transcripts at the opposite strand of some protein-coding genes.In yeast,it was reported that such antisense transcripts play regulatory roles for their partner gene...Recent studies have found many antisense non-coding transcripts at the opposite strand of some protein-coding genes.In yeast,it was reported that such antisense transcripts play regulatory roles for their partner genes by forming a feedback loop with the protein-coding genes.Since not all coding genes have accompanying antisense transcripts,it would be interesting to know whether there are sequence signatures in a coding gene that are decisive or associated with the existence of such antisense partners.We collected all the annotated antisense transcripts in the yeast Saccharomyces cerevisiae,analyzed sequence motifs around the genes with antisense partners,and classified genes with and without accompanying antisense transcripts by using machine learning methods.Some weak but statistically significant sequence features are detected,which indicates that there are sequence signatures around the protein-coding genes that may be decisive or indicative for the existence of accompanying antisense transcripts.展开更多
This paper tries to explain how China can keep domestic stability under both socialist government and rapid capitalist economic growth. By tracing China＇s reform experience and comparing it with the mainstream reform...This paper tries to explain how China can keep domestic stability under both socialist government and rapid capitalist economic growth. By tracing China＇s reform experience and comparing it with the mainstream reform strategies, the paper argues that, first, Chin＇s reform strategy is fundamentally different from the conventional reform strategies; second, China＇s success to a large extent is the result of Chinese leaders＇ decision making and careful management over reform process rather than of simply market force. Finally, the paper suggests that the active role the Chinese Communist Party plays in economic reform grants its legitimacy, thus enabling it to enjoy political stability under long term rapid economic and social transition.展开更多
基金The project supported by National Natural Science Foundation of China and the Natural Science Foundation of Shandong Province of China
文摘The generalized transformation method is utilized to solve three-dimensional Nizhnik-Novikov-Veselov equation and construct a series of new exact solutions including kink-shaped and bell-shaped soliton solutions, trigonometric function solutions, and Jacobi elliptic doubly periodic solutions. Among them, the Jacobi elliptic periodic wave solutions exactly degenerate to the soliton solutions at a certain limit condition. Compared with the existing tanh methods and Jacobi function method, the method we used here gives more general exact solutions without much extra effort.
文摘This paper discusses the history of linguistics in the west, as well as the features, the spokesmen and the contributions of different schools in different times. The learners can understand the linguistic schools in the west by analyzing them and then improve their ability to analyze languages.
文摘In this article, we have performed B3LYP/6-31＋G（d） calculations of geometrical and reaction enthalpies of antioxidant mechanisms for ADPHT 1-4 （3-alkyl-4-phenylacetylamino-lH-1,2,4-triazol-5-ones） and its derivatives： HAT （hydrogen atom transfer）, SET-PT （single electron transfer-proton transfer） and SPLET （sequential proton-loss electron transfer） were investigated in gas and solution-phases. Solvent contribution to enthalpies was computed employing integral equation formalism IEF-PCM （integral equation formalism method） method. It turned out that the lowest BDEs （bond dissociation energies） is obtained for C-H bonds due to captodative effect in various media. Results indicate that HAT mechanism represents the most anticipated process in gas-phase from thermodynamic point of view. But, the SPLET represents the thermodynamically preferred reaction pathway in solvents （2-propanol, acetonitrile, DMF （N,N-dimethylformamide） and water）. The authors showed that bond dissociation energies, IP （ionization potential） and PA （proton affinity） are sufficient to evaluate the thermodynamically preferred mechanism.
基金supported by the National Basic Research Program of China(2012CB316504 and 2012CB316503)the National Natural Science Foundation of China(91010016)
文摘Recent studies have found many antisense non-coding transcripts at the opposite strand of some protein-coding genes.In yeast,it was reported that such antisense transcripts play regulatory roles for their partner genes by forming a feedback loop with the protein-coding genes.Since not all coding genes have accompanying antisense transcripts,it would be interesting to know whether there are sequence signatures in a coding gene that are decisive or associated with the existence of such antisense partners.We collected all the annotated antisense transcripts in the yeast Saccharomyces cerevisiae,analyzed sequence motifs around the genes with antisense partners,and classified genes with and without accompanying antisense transcripts by using machine learning methods.Some weak but statistically significant sequence features are detected,which indicates that there are sequence signatures around the protein-coding genes that may be decisive or indicative for the existence of accompanying antisense transcripts.
文摘This paper tries to explain how China can keep domestic stability under both socialist government and rapid capitalist economic growth. By tracing China＇s reform experience and comparing it with the mainstream reform strategies, the paper argues that, first, Chin＇s reform strategy is fundamentally different from the conventional reform strategies; second, China＇s success to a large extent is the result of Chinese leaders＇ decision making and careful management over reform process rather than of simply market force. Finally, the paper suggests that the active role the Chinese Communist Party plays in economic reform grants its legitimacy, thus enabling it to enjoy political stability under long term rapid economic and social transition.
