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Dunyou Wang - One of the best experts on this subject based on the ideXlab platform.

  • Quantum dynamics study of vibrational excitation effects and Energy Requirement on reactivity for the O + CD4/CHD3 → OD/OH + CD3 reactions.
    The Journal of Physical Chemistry A, 2013
    Co-Authors: Wei Yan, Fanbin Meng, Dunyou Wang
    Abstract:

    A quantum reactive dynamics, six-degrees-of-freedom, time-dependent wave packet method is employed to study vibrational enhancement and Energy Requirement on reactivity of the O(3P) + CD4/CHD3 → OD/OH + CD3 reactions. The calculations show, for O + CD4, that all the vibrational excitations of CD4 enhance reactivity, which agrees with quasi-classical trajectory results. However, this finding contradicts the experimental observation where the bending excitation suppresses reactivity. The present study also reveals that translational Energy, in general, is more effective to enhance reactivity than vibrational Energy; however, at higher collision Energy, vibrational Energy is slightly more effective than translational Energy. For O + CHD3, the stretching and bending excitations of CHD3 enhance the reaction, whereas the umbrella motion hinders reactivity. The calculated excitation functions agree well with experiments.

  • quantum dynamics study of vibrational excitation effects and Energy Requirement on reactivity for the o cd4 chd3 od oh cd3 reactions
    Journal of Physical Chemistry A, 2013
    Co-Authors: Wei Yan, Fanbin Meng, Dunyou Wang
    Abstract:

    A quantum reactive dynamics, six-degrees-of-freedom, time-dependent wave packet method is employed to study vibrational enhancement and Energy Requirement on reactivity of the O(3P) + CD4/CHD3 → OD/OH + CD3 reactions. The calculations show, for O + CD4, that all the vibrational excitations of CD4 enhance reactivity, which agrees with quasi-classical trajectory results. However, this finding contradicts the experimental observation where the bending excitation suppresses reactivity. The present study also reveals that translational Energy, in general, is more effective to enhance reactivity than vibrational Energy; however, at higher collision Energy, vibrational Energy is slightly more effective than translational Energy. For O + CHD3, the stretching and bending excitations of CHD3 enhance the reaction, whereas the umbrella motion hinders reactivity. The calculated excitation functions agree well with experiments.

Wei Yan - One of the best experts on this subject based on the ideXlab platform.

  • Quantum dynamics study of vibrational excitation effects and Energy Requirement on reactivity for the O + CD4/CHD3 → OD/OH + CD3 reactions.
    The Journal of Physical Chemistry A, 2013
    Co-Authors: Wei Yan, Fanbin Meng, Dunyou Wang
    Abstract:

    A quantum reactive dynamics, six-degrees-of-freedom, time-dependent wave packet method is employed to study vibrational enhancement and Energy Requirement on reactivity of the O(3P) + CD4/CHD3 → OD/OH + CD3 reactions. The calculations show, for O + CD4, that all the vibrational excitations of CD4 enhance reactivity, which agrees with quasi-classical trajectory results. However, this finding contradicts the experimental observation where the bending excitation suppresses reactivity. The present study also reveals that translational Energy, in general, is more effective to enhance reactivity than vibrational Energy; however, at higher collision Energy, vibrational Energy is slightly more effective than translational Energy. For O + CHD3, the stretching and bending excitations of CHD3 enhance the reaction, whereas the umbrella motion hinders reactivity. The calculated excitation functions agree well with experiments.

  • quantum dynamics study of vibrational excitation effects and Energy Requirement on reactivity for the o cd4 chd3 od oh cd3 reactions
    Journal of Physical Chemistry A, 2013
    Co-Authors: Wei Yan, Fanbin Meng, Dunyou Wang
    Abstract:

    A quantum reactive dynamics, six-degrees-of-freedom, time-dependent wave packet method is employed to study vibrational enhancement and Energy Requirement on reactivity of the O(3P) + CD4/CHD3 → OD/OH + CD3 reactions. The calculations show, for O + CD4, that all the vibrational excitations of CD4 enhance reactivity, which agrees with quasi-classical trajectory results. However, this finding contradicts the experimental observation where the bending excitation suppresses reactivity. The present study also reveals that translational Energy, in general, is more effective to enhance reactivity than vibrational Energy; however, at higher collision Energy, vibrational Energy is slightly more effective than translational Energy. For O + CHD3, the stretching and bending excitations of CHD3 enhance the reaction, whereas the umbrella motion hinders reactivity. The calculated excitation functions agree well with experiments.

Peeyush Sharma - One of the best experts on this subject based on the ideXlab platform.

  • impact of tillage and mulch management on economics Energy Requirement and crop performance in maize wheat rotation in rainfed subhumid inceptisols india
    European Journal of Agronomy, 2011
    Co-Authors: Peeyush Sharma, Vikas Abrol, Rajan Sharma
    Abstract:

    Abstract Different tillage systems (conventional, minimum, raised bed and no tillage) and four mulch levels (control, polythene, straw and soil) were compared in maize (Zea mays) and wheat (Triticum aestivum) production for three years on an experimental field (sandy loam) located at Dry Land Research Sub Station, Dhiansar, Jammu. Each treatment was replicated four times in split plot design. The aim of the research was to determine the influence of tillage and mulch practices on economics, Energy Requirement, soil physical properties and performance of maize and wheat. Tillage methods significantly affected the soil physical properties as change in soil moisture contents and infiltration rate of soil was recorded. The soil moisture contents in minimum tillage (MT) were maximum (12.4%, 16.6%) in surface soil as compared to conventional tillage (CT) in maize and wheat crops, respectively. Comparing to the CT infiltration rate was (1.16times, 1.21times and 1.11times) higher in minimum tillage (MT), no tillage (NT) and raised bed (RB), respectively in kharif season. Similar results were also found in rabi season. The greatest maize yield of 1865 kg ha−1 was achieved with CT system while not significantly lower yield was achieved with MT system (1837 kg ha−1). However, wheat yield was recorded higher in MT as compare to the CT system. Comparing to the Energy Requirement of different operations, MT required 34.3% less, NT 31.1% less and RB 46.0% less than the CT system. MT system saved 2.5 times Energy in tillage operation compared to the CT system. The economic analysis also revealed that the maximum benefits could be obtained from MT (EUR 202.4 ha−1) followed by RB (EUR 164.2 ha−1) and NT (EUR 158.3 ha−1) and lowest in CT (EUR 149.5 ha−1). Benefit-cost ratio was highest in MT (0.71) and lowest in CT (0.44). Results revealed that mulch significantly affected the soil physical properties and growth of maize. The maximum soil moisture content, infiltration rate and grain yield of maize and wheat recorded higher in mulching practices over no mulch treatment. Polythene mulch and straw mulch were almost equally valuable in maize and wheat sequence. Tillage (minimum) and mulch (polythene and straw) have pronounced effect on soil physical properties (improved infiltration rate and conserve soil water), Energy Requirement, economics and growth of maize and wheat.

  • impact of tillage and mulch management on economics Energy Requirement and crop performance in maize wheat rotation in rainfed subhumid inceptisols india
    European Journal of Agronomy, 2011
    Co-Authors: Peeyush Sharma, Vikas Abrol, R K Sharma
    Abstract:

    Abstract Different tillage systems (conventional, minimum, raised bed and no tillage) and four mulch levels (control, polythene, straw and soil) were compared in maize (Zea mays) and wheat (Triticum aestivum) production for three years on an experimental field (sandy loam) located at Dry Land Research Sub Station, Dhiansar, Jammu. Each treatment was replicated four times in split plot design. The aim of the research was to determine the influence of tillage and mulch practices on economics, Energy Requirement, soil physical properties and performance of maize and wheat. Tillage methods significantly affected the soil physical properties as change in soil moisture contents and infiltration rate of soil was recorded. The soil moisture contents in minimum tillage (MT) were maximum (12.4%, 16.6%) in surface soil as compared to conventional tillage (CT) in maize and wheat crops, respectively. Comparing to the CT infiltration rate was (1.16times, 1.21times and 1.11times) higher in minimum tillage (MT), no tillage (NT) and raised bed (RB), respectively in kharif season. Similar results were also found in rabi season. The greatest maize yield of 1865 kg ha−1 was achieved with CT system while not significantly lower yield was achieved with MT system (1837 kg ha−1). However, wheat yield was recorded higher in MT as compare to the CT system. Comparing to the Energy Requirement of different operations, MT required 34.3% less, NT 31.1% less and RB 46.0% less than the CT system. MT system saved 2.5 times Energy in tillage operation compared to the CT system. The economic analysis also revealed that the maximum benefits could be obtained from MT (EUR 202.4 ha−1) followed by RB (EUR 164.2 ha−1) and NT (EUR 158.3 ha−1) and lowest in CT (EUR 149.5 ha−1). Benefit-cost ratio was highest in MT (0.71) and lowest in CT (0.44). Results revealed that mulch significantly affected the soil physical properties and growth of maize. The maximum soil moisture content, infiltration rate and grain yield of maize and wheat recorded higher in mulching practices over no mulch treatment. Polythene mulch and straw mulch were almost equally valuable in maize and wheat sequence. Tillage (minimum) and mulch (polythene and straw) have pronounced effect on soil physical properties (improved infiltration rate and conserve soil water), Energy Requirement, economics and growth of maize and wheat.

Fanbin Meng - One of the best experts on this subject based on the ideXlab platform.

  • Quantum dynamics study of vibrational excitation effects and Energy Requirement on reactivity for the O + CD4/CHD3 → OD/OH + CD3 reactions.
    The Journal of Physical Chemistry A, 2013
    Co-Authors: Wei Yan, Fanbin Meng, Dunyou Wang
    Abstract:

    A quantum reactive dynamics, six-degrees-of-freedom, time-dependent wave packet method is employed to study vibrational enhancement and Energy Requirement on reactivity of the O(3P) + CD4/CHD3 → OD/OH + CD3 reactions. The calculations show, for O + CD4, that all the vibrational excitations of CD4 enhance reactivity, which agrees with quasi-classical trajectory results. However, this finding contradicts the experimental observation where the bending excitation suppresses reactivity. The present study also reveals that translational Energy, in general, is more effective to enhance reactivity than vibrational Energy; however, at higher collision Energy, vibrational Energy is slightly more effective than translational Energy. For O + CHD3, the stretching and bending excitations of CHD3 enhance the reaction, whereas the umbrella motion hinders reactivity. The calculated excitation functions agree well with experiments.

  • quantum dynamics study of vibrational excitation effects and Energy Requirement on reactivity for the o cd4 chd3 od oh cd3 reactions
    Journal of Physical Chemistry A, 2013
    Co-Authors: Wei Yan, Fanbin Meng, Dunyou Wang
    Abstract:

    A quantum reactive dynamics, six-degrees-of-freedom, time-dependent wave packet method is employed to study vibrational enhancement and Energy Requirement on reactivity of the O(3P) + CD4/CHD3 → OD/OH + CD3 reactions. The calculations show, for O + CD4, that all the vibrational excitations of CD4 enhance reactivity, which agrees with quasi-classical trajectory results. However, this finding contradicts the experimental observation where the bending excitation suppresses reactivity. The present study also reveals that translational Energy, in general, is more effective to enhance reactivity than vibrational Energy; however, at higher collision Energy, vibrational Energy is slightly more effective than translational Energy. For O + CHD3, the stretching and bending excitations of CHD3 enhance the reaction, whereas the umbrella motion hinders reactivity. The calculated excitation functions agree well with experiments.

Rajan Sharma - One of the best experts on this subject based on the ideXlab platform.

  • impact of tillage and mulch management on economics Energy Requirement and crop performance in maize wheat rotation in rainfed subhumid inceptisols india
    European Journal of Agronomy, 2011
    Co-Authors: Peeyush Sharma, Vikas Abrol, Rajan Sharma
    Abstract:

    Abstract Different tillage systems (conventional, minimum, raised bed and no tillage) and four mulch levels (control, polythene, straw and soil) were compared in maize (Zea mays) and wheat (Triticum aestivum) production for three years on an experimental field (sandy loam) located at Dry Land Research Sub Station, Dhiansar, Jammu. Each treatment was replicated four times in split plot design. The aim of the research was to determine the influence of tillage and mulch practices on economics, Energy Requirement, soil physical properties and performance of maize and wheat. Tillage methods significantly affected the soil physical properties as change in soil moisture contents and infiltration rate of soil was recorded. The soil moisture contents in minimum tillage (MT) were maximum (12.4%, 16.6%) in surface soil as compared to conventional tillage (CT) in maize and wheat crops, respectively. Comparing to the CT infiltration rate was (1.16times, 1.21times and 1.11times) higher in minimum tillage (MT), no tillage (NT) and raised bed (RB), respectively in kharif season. Similar results were also found in rabi season. The greatest maize yield of 1865 kg ha−1 was achieved with CT system while not significantly lower yield was achieved with MT system (1837 kg ha−1). However, wheat yield was recorded higher in MT as compare to the CT system. Comparing to the Energy Requirement of different operations, MT required 34.3% less, NT 31.1% less and RB 46.0% less than the CT system. MT system saved 2.5 times Energy in tillage operation compared to the CT system. The economic analysis also revealed that the maximum benefits could be obtained from MT (EUR 202.4 ha−1) followed by RB (EUR 164.2 ha−1) and NT (EUR 158.3 ha−1) and lowest in CT (EUR 149.5 ha−1). Benefit-cost ratio was highest in MT (0.71) and lowest in CT (0.44). Results revealed that mulch significantly affected the soil physical properties and growth of maize. The maximum soil moisture content, infiltration rate and grain yield of maize and wheat recorded higher in mulching practices over no mulch treatment. Polythene mulch and straw mulch were almost equally valuable in maize and wheat sequence. Tillage (minimum) and mulch (polythene and straw) have pronounced effect on soil physical properties (improved infiltration rate and conserve soil water), Energy Requirement, economics and growth of maize and wheat.