We present nonadiabatic quantum dynamical calculations on the two coupled potential energy surfaces （12A＇ and 22A＇） [J. Theor. Comput. Chem. 8, 849 （2009）] for the reaction. Initial state-resolved reaction proba...We present nonadiabatic quantum dynamical calculations on the two coupled potential energy surfaces （12A＇ and 22A＇） [J. Theor. Comput. Chem. 8, 849 （2009）] for the reaction. Initial state-resolved reaction probabilities and cross sections for the N＋ND→N2＋D reaction and N＇＋ND→N＋N＇D reaction for collision energies of 5 meV to 1.0 eV are determined, respectively. It is found that the N＋ND→N2＋D reaction is dominated in the N＋ND reaction. In addition, we obtained the rate constants for the N＋ND→N2＋D reaction which demand further experimental investigations.展开更多
The quantum state-to-state calculations of the D + ND→N + D_2 reaction are performed on a potential energy surface of 4 A'' state. The state-resolved integral and differential cross sections and product state...The quantum state-to-state calculations of the D + ND→N + D_2 reaction are performed on a potential energy surface of 4 A'' state. The state-resolved integral and differential cross sections and product state distributions are calculated and discussed. It is found that the rotational distribution, rather than the vibrational distribution, of the product has an obvious inversion. Due to the fact that it is a small-impact-parameter collision, its product D_2 is mainly dominated by rebound mechanism, which can lead to backward scattering at low collision energy. As the collision energy increases, the forward scattering and sideward scattering begin to appear. In addition, the backward collision is also found to happen at high collision energy, through which we can know that both the rebound mechanism and stripping mechanism exist at high collision energy.展开更多
<div style="text-align:justify;"> Polymerase Chain Reaction (PCR) is an accurate, simple and fast analytical method. This technique is widely used in the identification of meat adulteration and meat-ba...<div style="text-align:justify;"> Polymerase Chain Reaction (PCR) is an accurate, simple and fast analytical method. This technique is widely used in the identification of meat adulteration and meat-based processed food products. Three Mitochondrial DNA (mt-DNA) primers NADH Dehydrogenase sub unit 5 (<em>ND5</em>), <em>D-Loop</em>, and Cytochrome b (<em>Cyt-b</em>) were tested for their specificity in detecting of pig (<em>Sus scrofa</em>) DNA fragments. DNA genome from 6 meat samples (pork, beef, goat, lamb, and chicken) was amplified by PCR technique using three pairs of primers (<em>ND5, D-Loop</em><em>, </em>and <em>Cyt-b</em>) and sequenced. The results of amplification using the three primers produced specific DNA bands with the lengths of 232 bp, 951 bp, and 404 bp, respectively. Comparison results with<em> ND5, D-Loop,</em> and <em>Cyt-b</em> gene sequences resulted in similarity values of 100%, 97%, and 99%, respectively. These showed that the mt-DNA primers of <em>ND5, D-Loop</em>, and<em> Cyt-b </em>genes can be recommended as specific primers in detecting pig (<em>Sus scrofa</em>) DNA fragments. </div>展开更多
A one-dimensional （1D） top-hat, diode-end-pumped, electro-optically Q-switched Nd：YVO4 slab laser is demonstrated. Under the pump power of 175.5 W, 26.3-W output power is obtained with the repetition rate of 5 kHz ...A one-dimensional （1D） top-hat, diode-end-pumped, electro-optically Q-switched Nd：YVO4 slab laser is demonstrated. Under the pump power of 175.5 W, 26.3-W output power is obtained with the repetition rate of 5 kHz and the pulse width of 4.3 ns. The output beam has a good top-hat beam profile in both the near field and the far field.展开更多
基金This work was supported by the National Basic Research Program of China （No.2007CB815202） and the National Natural Science Foundation of China （No.20721004 and No.20833008）.
文摘We present nonadiabatic quantum dynamical calculations on the two coupled potential energy surfaces （12A＇ and 22A＇） [J. Theor. Comput. Chem. 8, 849 （2009）] for the reaction. Initial state-resolved reaction probabilities and cross sections for the N＋ND→N2＋D reaction and N＇＋ND→N＋N＇D reaction for collision energies of 5 meV to 1.0 eV are determined, respectively. It is found that the N＋ND→N2＋D reaction is dominated in the N＋ND reaction. In addition, we obtained the rate constants for the N＋ND→N2＋D reaction which demand further experimental investigations.
基金Project supported by the National Natural Science Foundation of China(Grant Nos.11674198 and 11504206)the Natural Science Foundation of Shandong Province,China(Grant No.ZR2016AP14)the Taishan Scholar Project of Shandong Province,China
文摘The quantum state-to-state calculations of the D + ND→N + D_2 reaction are performed on a potential energy surface of 4 A'' state. The state-resolved integral and differential cross sections and product state distributions are calculated and discussed. It is found that the rotational distribution, rather than the vibrational distribution, of the product has an obvious inversion. Due to the fact that it is a small-impact-parameter collision, its product D_2 is mainly dominated by rebound mechanism, which can lead to backward scattering at low collision energy. As the collision energy increases, the forward scattering and sideward scattering begin to appear. In addition, the backward collision is also found to happen at high collision energy, through which we can know that both the rebound mechanism and stripping mechanism exist at high collision energy.
文摘<div style="text-align:justify;"> Polymerase Chain Reaction (PCR) is an accurate, simple and fast analytical method. This technique is widely used in the identification of meat adulteration and meat-based processed food products. Three Mitochondrial DNA (mt-DNA) primers NADH Dehydrogenase sub unit 5 (<em>ND5</em>), <em>D-Loop</em>, and Cytochrome b (<em>Cyt-b</em>) were tested for their specificity in detecting of pig (<em>Sus scrofa</em>) DNA fragments. DNA genome from 6 meat samples (pork, beef, goat, lamb, and chicken) was amplified by PCR technique using three pairs of primers (<em>ND5, D-Loop</em><em>, </em>and <em>Cyt-b</em>) and sequenced. The results of amplification using the three primers produced specific DNA bands with the lengths of 232 bp, 951 bp, and 404 bp, respectively. Comparison results with<em> ND5, D-Loop,</em> and <em>Cyt-b</em> gene sequences resulted in similarity values of 100%, 97%, and 99%, respectively. These showed that the mt-DNA primers of <em>ND5, D-Loop</em>, and<em> Cyt-b </em>genes can be recommended as specific primers in detecting pig (<em>Sus scrofa</em>) DNA fragments. </div>
文摘A one-dimensional （1D） top-hat, diode-end-pumped, electro-optically Q-switched Nd：YVO4 slab laser is demonstrated. Under the pump power of 175.5 W, 26.3-W output power is obtained with the repetition rate of 5 kHz and the pulse width of 4.3 ns. The output beam has a good top-hat beam profile in both the near field and the far field.
