Search results

1

Survey of the Excited State Dissociation οf Gas-Phase Bromine Monochloride in the Visible-Near UV Wavelength Region

100%

Zhang D.

Acta Physica Polonica A

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2010

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vol. 117

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issue 3

457-465

EN

The spectroscopic transitions and photoabsorption/dissociation processes of bromine monochloride (BrCl) via several low-lying covalently bound electronic states and repulsive states have been investigated by performing electronic structure calculations and wave packet simulations of nuclear motion. The absorption spectra for 52-electron singlet systems are obtained by employing time-dependent propagation methods or the real-time propagation of the time-dependent Schrödinger equations in the adiabatically exact approximation. Based on the elastic scattering calculations, the results of angular distributions of the products of photodissociation of BrCl molecules are examined on two aspects: (1) the nature of the state that is prepared by excitation from a bound level into a continuum, and (2) under avoided crossing cases, the influences of nonadiabatic coupling processes on the fragmentation process are evaluated by virtue of a semiclassical Landau-Zener model, which treats an avoided crossing between two states of a given nature and evaluates a nonadiabatic effect relevant to the molecule during photodissociation. The model qualitatively reproduces the key aspects of the full processes related to the transfer of dissociating flux between states of 0+ symmetry, indicating that the proposed coupling scheme is generally correct.

2

Characteristics of Magnetic Core in Magnetic Pulse Compression System

39%

Zhang D., Yan P., Sun Y., Wang J., Zhou Y., Pan R.

Acta Physica Polonica A

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2009

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vol. 115

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issue 6

1001-1003

EN

In order to obtain the characteristics of magnetic core under ≈0.5-5 μs saturation time, a one-stage magnetic pulse compression circuit without external demagnetization circuits which are commonly used in magnetic compressors is designed. The current through the core is calculated by voltage across the resistive load, and the loop voltage is picked up with a single wire loop and integrated by software. B-H curves are derived from the measured voltage and current wave forms. B-H curves show that the core loss is in inverse proportion to the time to saturation, whereas the percentile core loss decreases as the charging energy increases. While the eddy current loss and dissipated energy are in direct proportion to dB/dt. The low inductance of magnetic switch indicates that the core is saturated and behaves as an air core. By applying custom characteristics to each stage in Pspice simulation, more practical energy transfer in magnetic pulse compression and the effects of leakage current are presented.

3

A New Potential Superhard Phase of OsN_2

39%

Fan Q., Wei Q., Yan H., Zhang M., Zhang D., Zhang J.

Acta Physica Polonica A

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2014

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vol. 126

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issue 3

740-747

EN

A new phase of C2/m OsN_2 is proposed in this paper. The crystal structure, elasticity and electronic properties of C2/m OsN_2 were studied by first-principles calculations. The elastic constants, the elastic moduli (B, G, and E) and Poisson's ratio v of OsN_2 have been investigated. From the first-principles calculations, we find that C2/m OsN_2 is metallic and mechanically stable. The quasi-harmonic Debye model, using a set of total energy versus molar volume obtained from the first-principles calculations, is applied to the study of the thermal and vibrational effects. The dependence of structural parameters, thermal expansions, heat capacities, Grüneisen parameters and Debye temperatures on the temperature and pressure are obtained in the whole pressure range from 0 to 80 GPa and temperature range from 0 to 800 K as well as compared with available data.

4

Synchronization Study and Introductory Experiment οf Laser-Triggered Surface Flashover in Voltage Pulse

39%

Pan R., Wang J., Sun Y., Sun G., Yan P., Zhang D.

Acta Physica Polonica A

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2009

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vol. 115

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issue 6

1167-1169

EN

With the aim of studying the characteristics of laser-triggered surface flashover in voltage pulse, synchronization problem of laser pulse and voltage pulse should be solved. A single/double harmonic, with wavelength λ of 1064/532 nm, Q-switched Nd:YAG laser is used to trigger the surface flashover. The synchronization problem is solved using a self-made digital delay/pulse generator. The delay time and jitter of Marx's trigger input and output, Marx's trigger output and Marx's output, laser input and output are respectively measured. Based on the result of the delay time and the timing sequence of the laser triggering system, the synchronization of laser pulse and voltage pulse is obtained through adjusting the channel delay time of digital delay/pulse generator. In addition, introductory experiment of laser-triggered surface flashover is carried out using the flat electrodes and columned insulators.

5

Establishment of 5-Fluorouracil-resistant canine mammary tumor cell line

39%

Zhang D., Zhang H., Zhou B., Pei S. M., Du H. C., Jin Y. P., Lin D. G.

Polish Journal of Veterinary Sciences

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2017

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issue 1

6

SYBR Green-based real-time polymerase chain reaction assay for detection of porcine parvovirus 6 in pigs

37%

Sun P., Bai C. X., Zhang D., Wang J., Yang K. K., Cheng B. Z., Li Y. D., Wang Y., Sun P., Bai C. X., Zhang D., Wang J., Yang K. K., Cheng B. Z., Li Y. D., Wang Y.

Polish Journal of Veterinary Sciences

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2020

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vol. 23

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issue 2

7

Development of a SYBR Green I real-time PCR assay for detection of novel porcine parvovirus 7

33%

Li Y. D., Yu Z. D., Bai C. X., Zhang D., Sun P., L P. M., Liu H., Wang J., Wang Y., Li Y. D., Yu Z. D., Bai C. X., Zhang D., Sun P., L P. M., Liu H., Wang J., Wang Y.

Polish Journal of Veterinary Sciences

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2021

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vol. 24

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issue 1

8

Biological characteristics of a new antibacterial peptide and its antibacterial mechanisms against Gram-negative bacteria

27%

Pei Z., Ying X., Tang Y., Liu L., Zhang H., Liu S., Zhang D., Wang K., Kong L., Gao Y., Ma H.

Polish Journal of Veterinary Sciences

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2018

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vol. 21

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issue 3

Refine search results

Survey of the Excited State Dissociation οf Gas-Phase Bromine Monochloride in the Visible-Near UV Wavelength Region

Characteristics of Magnetic Core in Magnetic Pulse Compression System

A New Potential Superhard Phase of OsN_2

Synchronization Study and Introductory Experiment οf Laser-Triggered Surface Flashover in Voltage Pulse

Establishment of 5-Fluorouracil-resistant canine mammary tumor cell line

SYBR Green-based real-time polymerase chain reaction assay for detection of porcine parvovirus 6 in pigs

Development of a SYBR Green I real-time PCR assay for detection of novel porcine parvovirus 7

Biological characteristics of a new antibacterial peptide and its antibacterial mechanisms against Gram-negative bacteria