There have been many models to identify and analyze low-frequency motions in protein and DNA molecules. It has been successfully used to simulate various low-frequency collective motions in protein and DNA molecules. ...There have been many models to identify and analyze low-frequency motions in protein and DNA molecules. It has been successfully used to simulate various low-frequency collective motions in protein and DNA molecules. Low- frequency motions in biomacromolecules origi- nate from two common and intrinsic character-istics;i.e., they contain 1) a series of weak bonds, such as hydrogen bonds, and 2) a sub-stantial mass distributed over the region of these weak bonds. Many biological functions and dynamic mechanisms, including coopera-tive effects have been reported. In this regard, some phenomenological theories were estab-lished. However, differences in experimental outcomes are expected since many factors could influence the outcome of experiments in EMF research. Any effect of EMF has to depend on the energy absorbed by a biological organ-ism and on how the energy is delivered in space and time. Frequency, intensity, exposure dura-tion, and the number of exposure episodes can affect the response, and these factors can inter- act with each other to produce different effects. In addition, in order to understand the biologi- cal consequence of EMF exposure, one must know whether the effect is cumulative, whether compensatory responses result, and when ho-meostasis will break down. Such findings will have great potential for use in translation medi-cine at the clinical level without being invasive.展开更多
High spin states in the odd-A nucleus 113^In have been investigated using the re- action 110^Pd（7^Li, 4n） at a beam energy of 50 MeV. A new positive parity dipole band with the configuration of π（g9/2）^-lv（h11/2...High spin states in the odd-A nucleus 113^In have been investigated using the re- action 110^Pd（7^Li, 4n） at a beam energy of 50 MeV. A new positive parity dipole band with the configuration of π（g9/2）^-lv（h11/2）^2 v （g7/2）^2 is established. The effective interaction V（θ） values of this band have been successfully described by a semiclassical geometric model based on shear mechanism, which show that the dipole band has the characteristics of magnetic rotation. In addition the collective rotational angular momentum for this band is extracted. The results show that the core contribution increases gradually with the increase of the rotation frequency.展开更多
This paper mainly seeks to discuss what factors contribute to students' passive involvement in English classes. It also explores whether it would be possible to solve the above pedagogical dilemmas through impleme...This paper mainly seeks to discuss what factors contribute to students' passive involvement in English classes. It also explores whether it would be possible to solve the above pedagogical dilemmas through implementing collaborative learning mode in ESL. After analyzing the data collected from case study, classroom observation and post-hoc interviews, researcher discovers that collaborative learning mode exerts a considerable positive influence on reducing students' learning anxiety and rebuilding their self-confidence. In addition, peer interaction and group collaboration are highly motivating and effective for ESL learners at college level.展开更多
文摘There have been many models to identify and analyze low-frequency motions in protein and DNA molecules. It has been successfully used to simulate various low-frequency collective motions in protein and DNA molecules. Low- frequency motions in biomacromolecules origi- nate from two common and intrinsic character-istics;i.e., they contain 1) a series of weak bonds, such as hydrogen bonds, and 2) a sub-stantial mass distributed over the region of these weak bonds. Many biological functions and dynamic mechanisms, including coopera-tive effects have been reported. In this regard, some phenomenological theories were estab-lished. However, differences in experimental outcomes are expected since many factors could influence the outcome of experiments in EMF research. Any effect of EMF has to depend on the energy absorbed by a biological organ-ism and on how the energy is delivered in space and time. Frequency, intensity, exposure dura-tion, and the number of exposure episodes can affect the response, and these factors can inter- act with each other to produce different effects. In addition, in order to understand the biologi- cal consequence of EMF exposure, one must know whether the effect is cumulative, whether compensatory responses result, and when ho-meostasis will break down. Such findings will have great potential for use in translation medi-cine at the clinical level without being invasive.
基金supported by National Natural Science Foundation of China (Nos.10105003,11075064,11075214,10927507)the Specialized Research Fund for the Doctoral Programme of Higher Education of China (No.20050183008)National Basic Research Programme of China (No.2007CB815005)
文摘High spin states in the odd-A nucleus 113^In have been investigated using the re- action 110^Pd（7^Li, 4n） at a beam energy of 50 MeV. A new positive parity dipole band with the configuration of π（g9/2）^-lv（h11/2）^2 v （g7/2）^2 is established. The effective interaction V（θ） values of this band have been successfully described by a semiclassical geometric model based on shear mechanism, which show that the dipole band has the characteristics of magnetic rotation. In addition the collective rotational angular momentum for this band is extracted. The results show that the core contribution increases gradually with the increase of the rotation frequency.
文摘This paper mainly seeks to discuss what factors contribute to students' passive involvement in English classes. It also explores whether it would be possible to solve the above pedagogical dilemmas through implementing collaborative learning mode in ESL. After analyzing the data collected from case study, classroom observation and post-hoc interviews, researcher discovers that collaborative learning mode exerts a considerable positive influence on reducing students' learning anxiety and rebuilding their self-confidence. In addition, peer interaction and group collaboration are highly motivating and effective for ESL learners at college level.
