Epidemic of cotton leaf curl virus disease(CLCD)was the compelling factor to devise newstrategies in cotton breeding programs ofPakistan.The evaluation of cotton genotypesagainst the CLCD resistance is difficult,expen...Epidemic of cotton leaf curl virus disease(CLCD)was the compelling factor to devise newstrategies in cotton breeding programs ofPakistan.The evaluation of cotton genotypesagainst the CLCD resistance is difficult,expensive and time consuming in field andespecially in greenhouse due to unevendistribution of the disease.A展开更多
In the experiment to determine the plasma electron temperature, a modifiedmultichannel PIN diodes assembly is used as detectors to record the X-ray pulses from a low-energyMather-type plasma focus device energized by ...In the experiment to determine the plasma electron temperature, a modifiedmultichannel PIN diodes assembly is used as detectors to record the X-ray pulses from a low-energyMather-type plasma focus device energized by a 32μF, 15 kV (3.6kJ) single capacitor, with deuteriumas a filling gas. The ratio of the integrated bremsstrahlung emission transmitting through foils tothe total incident flux as a function of foil thickness at various temperatures is obtained forfoil absorbers of material. Using 3 μm, 6 μm, 9 μm,12 μm,15 μm and 18 μm thick aluminiumabsorbers, the transmitted X-ray flux is detected. By comparing the experimental and theoreticalcurves through a computer program, the plasma electron temperature is determined. Results show thatthe deuterium focus plasma electron temperature is about 800 eV.展开更多
The particle diffusion coefficient and the convection velocity were studied based on the density modulation using D2 gas puffing on the HT-7 tokamak. The density was measured by a five-channel FIR interferometer. The ...The particle diffusion coefficient and the convection velocity were studied based on the density modulation using D2 gas puffing on the HT-7 tokamak. The density was measured by a five-channel FIR interferometer. The density modulation amplitude was 10% of the central chord averaged background density and the modulation frequency was 10 Hz in the experiments. The particle diffusion coefficient （D） and the convection velocity （V） were obtained for different background plasmas with the central chord averaged density 〈ne〉 = 1.5×10^19m^-3 and 3.0×10^19 m^-3 respectively. It was observed that the influence of density modulation on the main plasma parameters was very weak. This technology is expected to be useful for the analysis of LHW and IBW heated plasmas on HT-7 tokamak in the near future.展开更多
The current study deals with exact soliton solutions for Schrödinger-Hirota(SH)equation via two modi-fied integration methods.Those methods are known as the improved(G/G)-expansion method and the Kudryashov metho...The current study deals with exact soliton solutions for Schrödinger-Hirota(SH)equation via two modi-fied integration methods.Those methods are known as the improved(G/G)-expansion method and the Kudryashov method.This model is a generalized version of the nonlinear Schrödinger(NLS)equation with higher order dispersion and cubic nonlinearity.It can be considered as a more accurate approximation than the NLS equation in explaining wave propagation in the ocean and optical fibers.A novel deriva-tive operator named as the conformable truncated M-fractional is used to study the above mentioned model.The obtained results can be used in describing the Schrödinger-Hirota equation in some better way.Moreover the obtained results are verified through symbolic computational software.Also,the ob-tained results show that the suggested approaches have broaden capacity to secure some new soliton type solutions for the fractional differential equations in an effective way.In the end,the results are also explained through their graphical representations.展开更多
文摘Epidemic of cotton leaf curl virus disease(CLCD)was the compelling factor to devise newstrategies in cotton breeding programs ofPakistan.The evaluation of cotton genotypesagainst the CLCD resistance is difficult,expensive and time consuming in field andespecially in greenhouse due to unevendistribution of the disease.A
基金This work was partially supported by Quaid-i-Azam University research Grant Pakistan Science Foundation Project Pakistan Atomic Energy Commission Project for Plasma Physics
文摘In the experiment to determine the plasma electron temperature, a modifiedmultichannel PIN diodes assembly is used as detectors to record the X-ray pulses from a low-energyMather-type plasma focus device energized by a 32μF, 15 kV (3.6kJ) single capacitor, with deuteriumas a filling gas. The ratio of the integrated bremsstrahlung emission transmitting through foils tothe total incident flux as a function of foil thickness at various temperatures is obtained forfoil absorbers of material. Using 3 μm, 6 μm, 9 μm,12 μm,15 μm and 18 μm thick aluminiumabsorbers, the transmitted X-ray flux is detected. By comparing the experimental and theoreticalcurves through a computer program, the plasma electron temperature is determined. Results show thatthe deuterium focus plasma electron temperature is about 800 eV.
基金supported partly by Japanese Society of Promotion of Science and Chinese Academy of Sciences Core-University Program on Plasma and Nuclear Fusion in 2004
文摘The particle diffusion coefficient and the convection velocity were studied based on the density modulation using D2 gas puffing on the HT-7 tokamak. The density was measured by a five-channel FIR interferometer. The density modulation amplitude was 10% of the central chord averaged background density and the modulation frequency was 10 Hz in the experiments. The particle diffusion coefficient （D） and the convection velocity （V） were obtained for different background plasmas with the central chord averaged density 〈ne〉 = 1.5×10^19m^-3 and 3.0×10^19 m^-3 respectively. It was observed that the influence of density modulation on the main plasma parameters was very weak. This technology is expected to be useful for the analysis of LHW and IBW heated plasmas on HT-7 tokamak in the near future.
文摘The current study deals with exact soliton solutions for Schrödinger-Hirota(SH)equation via two modi-fied integration methods.Those methods are known as the improved(G/G)-expansion method and the Kudryashov method.This model is a generalized version of the nonlinear Schrödinger(NLS)equation with higher order dispersion and cubic nonlinearity.It can be considered as a more accurate approximation than the NLS equation in explaining wave propagation in the ocean and optical fibers.A novel deriva-tive operator named as the conformable truncated M-fractional is used to study the above mentioned model.The obtained results can be used in describing the Schrödinger-Hirota equation in some better way.Moreover the obtained results are verified through symbolic computational software.Also,the ob-tained results show that the suggested approaches have broaden capacity to secure some new soliton type solutions for the fractional differential equations in an effective way.In the end,the results are also explained through their graphical representations.
