In the pathological changes of psoriasis vulgaris,excessive proliferation of keratinocytes,proliferation of microvessels,infiltration of a large number of inflammatory cells,and great shortening of epidermal replaceme...In the pathological changes of psoriasis vulgaris,excessive proliferation of keratinocytes,proliferation of microvessels,infiltration of a large number of inflammatory cells,and great shortening of epidermal replacement time,are the manifestations of Qi and Yin depletion,and they all correspond with pathological changes of nutrient Qi and blood deficiency caused by excessive loss.The treatment of psoriasis should focus on cold straight fire,convergence and fixation.Therefore,it is feasible to treat psoriasis with hoop in theory,and it is found that"cold hoop confining medicine"may be more suitable for the treatment of psoriasis vulgaris in the gradual progress of the experiment.The research could provide theoretical basis for the application of cold hoop confining medicine represented by brusatol in psoriasis vulgaris and related diseases.展开更多
The dynamical behavior of a rolling hoop with an unbalanced point mass under the influence of gravity is discussed.The whole process from rolling to hopping of the hoop is analyzed qualitatively.The conditions of slip...The dynamical behavior of a rolling hoop with an unbalanced point mass under the influence of gravity is discussed.The whole process from rolling to hopping of the hoop is analyzed qualitatively.The conditions of slipping,hopping and touching down of the hoop are obtained.It is shown that the hoop cannot maintain a pure rolling before hopping up,and the slippage is unavoid- able.The hoop has neither vertical velocity nor vertical acceleration at the moment when the normal constraint force vanishes.The hopping motion of the hoop can occur only when the derivative of the vertical acceleration with respect to time is positive.It requires that the angular velocity of the hoop should be larger than a critical value,and the mass point should be located in the fourth quadrant of the hoop circle at the moment of hopping.The whole process of the pure rolling,rolling with slipping, hopping and falling motions of the hoop is shown in the phase plane,and the physical explanation of the hopping motion is given.展开更多
基金Supported by National Science Foundation for Young Scholars(81704090)Key Projects of Chongqing Municipal Science and Technology Commission(cstc2017jcyjbx0044).
文摘In the pathological changes of psoriasis vulgaris,excessive proliferation of keratinocytes,proliferation of microvessels,infiltration of a large number of inflammatory cells,and great shortening of epidermal replacement time,are the manifestations of Qi and Yin depletion,and they all correspond with pathological changes of nutrient Qi and blood deficiency caused by excessive loss.The treatment of psoriasis should focus on cold straight fire,convergence and fixation.Therefore,it is feasible to treat psoriasis with hoop in theory,and it is found that"cold hoop confining medicine"may be more suitable for the treatment of psoriasis vulgaris in the gradual progress of the experiment.The research could provide theoretical basis for the application of cold hoop confining medicine represented by brusatol in psoriasis vulgaris and related diseases.
文摘The dynamical behavior of a rolling hoop with an unbalanced point mass under the influence of gravity is discussed.The whole process from rolling to hopping of the hoop is analyzed qualitatively.The conditions of slipping,hopping and touching down of the hoop are obtained.It is shown that the hoop cannot maintain a pure rolling before hopping up,and the slippage is unavoid- able.The hoop has neither vertical velocity nor vertical acceleration at the moment when the normal constraint force vanishes.The hopping motion of the hoop can occur only when the derivative of the vertical acceleration with respect to time is positive.It requires that the angular velocity of the hoop should be larger than a critical value,and the mass point should be located in the fourth quadrant of the hoop circle at the moment of hopping.The whole process of the pure rolling,rolling with slipping, hopping and falling motions of the hoop is shown in the phase plane,and the physical explanation of the hopping motion is given.
