Senk for A&Williams J:有氧健身训练与心理训练对应激反应的调节作用在一些应激反应的独立指标测试中,健身训练与心理训练均显示出良好作用。然而,对有氧健身和心理训练的是分别进行的单独测试。本研究认为,应激反应不是单一反应,...Senk for A&Williams J:有氧健身训练与心理训练对应激反应的调节作用在一些应激反应的独立指标测试中,健身训练与心理训练均显示出良好作用。然而,对有氧健身和心理训练的是分别进行的单独测试。本研究认为,应激反应不是单一反应,健身训练和心理训练是对应激反应的不同组成成份产生作用。仅就心率测试来讲,初始纪录分析与对一定时间变化的趋势评定呈现不同结果。该研究认为。"缓解变化"与"控制变化"的作用有着明确区别。Journal of Sport Behavior(USA),1 995,Vol.18,No.2:1 30—展开更多
采用热重实验对芦苇的热解特性进行了研究,并采用2种动力学模型对不同升温速率(10、20、30℃/min)下芦苇热解过程进行了动力学研究。实验结果表明,芦苇热解主要分为水分析出阶段(30~120℃)、解聚过程阶段(120~237℃)、挥发分脱除阶段(23...采用热重实验对芦苇的热解特性进行了研究,并采用2种动力学模型对不同升温速率(10、20、30℃/min)下芦苇热解过程进行了动力学研究。实验结果表明,芦苇热解主要分为水分析出阶段(30~120℃)、解聚过程阶段(120~237℃)、挥发分脱除阶段(237~369℃)及无机物和残留有机物的分解阶段(369~682℃),并且随着升温速率的增大,热解温度特征点向高温侧偏移。模型计算结果表明,n级单一反应模型在n=1时拟合程度最高,主要遵循一级反应,活化能分别为30.70、34.60、33.01 k J/mol;分布式活化能模型计算得出的活化能处于30~116 k J/mol之间。通过对比2种模型的计算结果,得出分布式活化能模型能更好地反映芦苇的热解过程。展开更多
A single-mode laser noise model driven by quadratic colored pump noise and amplitude modulation signal is proposed. The real and imaginary parts of the pump noise are assumed to be cross-correlation. The effect of cro...A single-mode laser noise model driven by quadratic colored pump noise and amplitude modulation signal is proposed. The real and imaginary parts of the pump noise are assumed to be cross-correlation. The effect of cross- correlation of noise and amplitude modulation of signal on laser statistical properties is studied by using the linearized approximation. The analytic expression of signal-to-noise ratio （SNR） is calculated. It is found that the phenomena of stochastic resonance （SR） respectively exist in the curves of the SNR versus the noise cross-correlation coefficient λ and the SNR versus the pump parameter a, as well as the SNR versus the signal frequency ω in our model. It is shown that there are three different typies of SR in the model： the conventional form of SR, the SR in the broad sense, and the bona fide SR.展开更多
文摘Senk for A&Williams J:有氧健身训练与心理训练对应激反应的调节作用在一些应激反应的独立指标测试中,健身训练与心理训练均显示出良好作用。然而,对有氧健身和心理训练的是分别进行的单独测试。本研究认为,应激反应不是单一反应,健身训练和心理训练是对应激反应的不同组成成份产生作用。仅就心率测试来讲,初始纪录分析与对一定时间变化的趋势评定呈现不同结果。该研究认为。"缓解变化"与"控制变化"的作用有着明确区别。Journal of Sport Behavior(USA),1 995,Vol.18,No.2:1 30—
文摘采用热重实验对芦苇的热解特性进行了研究,并采用2种动力学模型对不同升温速率(10、20、30℃/min)下芦苇热解过程进行了动力学研究。实验结果表明,芦苇热解主要分为水分析出阶段(30~120℃)、解聚过程阶段(120~237℃)、挥发分脱除阶段(237~369℃)及无机物和残留有机物的分解阶段(369~682℃),并且随着升温速率的增大,热解温度特征点向高温侧偏移。模型计算结果表明,n级单一反应模型在n=1时拟合程度最高,主要遵循一级反应,活化能分别为30.70、34.60、33.01 k J/mol;分布式活化能模型计算得出的活化能处于30~116 k J/mol之间。通过对比2种模型的计算结果,得出分布式活化能模型能更好地反映芦苇的热解过程。
基金The project supported by National Natural Science Foundation of China under Grant No.10275025
文摘A single-mode laser noise model driven by quadratic colored pump noise and amplitude modulation signal is proposed. The real and imaginary parts of the pump noise are assumed to be cross-correlation. The effect of cross- correlation of noise and amplitude modulation of signal on laser statistical properties is studied by using the linearized approximation. The analytic expression of signal-to-noise ratio （SNR） is calculated. It is found that the phenomena of stochastic resonance （SR） respectively exist in the curves of the SNR versus the noise cross-correlation coefficient λ and the SNR versus the pump parameter a, as well as the SNR versus the signal frequency ω in our model. It is shown that there are three different typies of SR in the model： the conventional form of SR, the SR in the broad sense, and the bona fide SR.
