In this study, our goal is to obtain the entanglement dynamics of trapped three-level ion interaction two laser beams in beyond Lamb-Dicke parameters. Three values of LDP, <span style="white-space:nowrap;"...In this study, our goal is to obtain the entanglement dynamics of trapped three-level ion interaction two laser beams in beyond Lamb-Dicke parameters. Three values of LDP, <span style="white-space:nowrap;"><em>η</em>=0.09, <span style="white-space:nowrap;"><em>η</em>=0.2 </span></span>and <span style="white-space:nowrap;"><em>η</em>=0.3 </span>are given. We used the concurrence and the negativity to measure the amount of quantum entanglement created in the system. The interacting trapped ion led to the formation of phonons as a result of the coupling. In two quantum systems (ion-phonons), analytical formulas describing both these measurements are constructed. These formulas and probability coefficients include first order terms of final state vector. We report that long survival time of entanglement can be provided with two quantum measures. Negativity and concurrence maximum values are obtained N = 0.553 and for LDP = 0.3. As a similar, the other two values of LDP are determined and taken into account throughout this paper. For a more detailed understanding of entanglement measurement results, “contour plot” was preferred in Mathematica 8.展开更多
Register is a variety of language in use in different social situations and for different purposes. It is an essential compo-nent of communication in real life. This paper, based on Halliday's register theory and ...Register is a variety of language in use in different social situations and for different purposes. It is an essential compo-nent of communication in real life. This paper, based on Halliday's register theory and actual analysis of the registers of several re-al texts, argues that the application of register theory to the English language teaching will not only develop students'all-round lan-guage skills but also improve their ability to use English effectively and appropriately.展开更多
Circular dichroism spectroscopy was used to study the effect of metallic ions such as Fe 3+,Al 3+and Ca 2+on the structure of collagen molecules.The results showed the effect of the ions was similar to that of thermal...Circular dichroism spectroscopy was used to study the effect of metallic ions such as Fe 3+,Al 3+and Ca 2+on the structure of collagen molecules.The results showed the effect of the ions was similar to that of thermal denaturation but not as strong.On the basis of the obtained results,the mechanism used by the metallic ions to protect the biovalves from calcification may be explained as follows.Collagen is the dominant component of the biovalves.Pretreating the biovalves with glutaraldehyde caused many amino acid residues in collagen molecules to cross link.This leads to a decrease in the total positive charge in the collagen molecules and a relative surplus of free carboxyl groups.The trivalent metallic ions such as Fe 3+preferentially bound with negatively charged carboxyl groups of collagen molecules,which caused the superhelix of the collagen to be loose and random.This improved the mechanical properties of the biovalve and neutralized surplus free carboxyl groups caused by the glutaraldehyde treatment,closed the sites where the Ca 2+was bound.Also,it effectively protected the biovalves from calcification.展开更多
文摘In this study, our goal is to obtain the entanglement dynamics of trapped three-level ion interaction two laser beams in beyond Lamb-Dicke parameters. Three values of LDP, <span style="white-space:nowrap;"><em>η</em>=0.09, <span style="white-space:nowrap;"><em>η</em>=0.2 </span></span>and <span style="white-space:nowrap;"><em>η</em>=0.3 </span>are given. We used the concurrence and the negativity to measure the amount of quantum entanglement created in the system. The interacting trapped ion led to the formation of phonons as a result of the coupling. In two quantum systems (ion-phonons), analytical formulas describing both these measurements are constructed. These formulas and probability coefficients include first order terms of final state vector. We report that long survival time of entanglement can be provided with two quantum measures. Negativity and concurrence maximum values are obtained N = 0.553 and for LDP = 0.3. As a similar, the other two values of LDP are determined and taken into account throughout this paper. For a more detailed understanding of entanglement measurement results, “contour plot” was preferred in Mathematica 8.
文摘Register is a variety of language in use in different social situations and for different purposes. It is an essential compo-nent of communication in real life. This paper, based on Halliday's register theory and actual analysis of the registers of several re-al texts, argues that the application of register theory to the English language teaching will not only develop students'all-round lan-guage skills but also improve their ability to use English effectively and appropriately.
基金Supported by the Nationa1 Natura1 Science Foundation of China(No 59493208)|
文摘Circular dichroism spectroscopy was used to study the effect of metallic ions such as Fe 3+,Al 3+and Ca 2+on the structure of collagen molecules.The results showed the effect of the ions was similar to that of thermal denaturation but not as strong.On the basis of the obtained results,the mechanism used by the metallic ions to protect the biovalves from calcification may be explained as follows.Collagen is the dominant component of the biovalves.Pretreating the biovalves with glutaraldehyde caused many amino acid residues in collagen molecules to cross link.This leads to a decrease in the total positive charge in the collagen molecules and a relative surplus of free carboxyl groups.The trivalent metallic ions such as Fe 3+preferentially bound with negatively charged carboxyl groups of collagen molecules,which caused the superhelix of the collagen to be loose and random.This improved the mechanical properties of the biovalve and neutralized surplus free carboxyl groups caused by the glutaraldehyde treatment,closed the sites where the Ca 2+was bound.Also,it effectively protected the biovalves from calcification.
