The Lin-Reissner-Tsien equation describes unsteady transonic flows under the transonic approximation. In the present paper, the equation is reduced to an ordinary differential equation via a similarity transformation....The Lin-Reissner-Tsien equation describes unsteady transonic flows under the transonic approximation. In the present paper, the equation is reduced to an ordinary differential equation via a similarity transformation. The resulting equation is then solved analytically and even exactly in some cases. Numerical simulations are provided for the cases in which there is no exact solution. Travelling wave solutions are also obtained.展开更多
以华北驼绒藜(Ceratoides arborescens(Losinsk.)Tsien et C.G.Ma)为研究材料,探讨添加剂处理对其青贮品质和体外消化率的影响。试验设置了对照、乳酸菌和纤维素酶共10个处理组,调制青贮饲料,45 d后开封并取样分析。结果表明:0.01%Lalsi...以华北驼绒藜(Ceratoides arborescens(Losinsk.)Tsien et C.G.Ma)为研究材料,探讨添加剂处理对其青贮品质和体外消化率的影响。试验设置了对照、乳酸菌和纤维素酶共10个处理组,调制青贮饲料,45 d后开封并取样分析。结果表明:0.01%Lalsil Dry可以明显提高ADF体外消化率(P<0.05)。纤维素酶处理的乳酸含量明显高于对照(P<0.05),其中0.03%的添加量还明显降低了pH值、氨态氮和NDF含量(P<0.05)。混合添加处理的乳酸含量均明显高于对照,NPN明显低于对照(P<0.05),且LM3+CF3显著降低了华北驼绒藜青贮饲料的pH值和NDF的含量(P<0.05),明显提高了ADF的体外消化率。展开更多
文摘The Lin-Reissner-Tsien equation describes unsteady transonic flows under the transonic approximation. In the present paper, the equation is reduced to an ordinary differential equation via a similarity transformation. The resulting equation is then solved analytically and even exactly in some cases. Numerical simulations are provided for the cases in which there is no exact solution. Travelling wave solutions are also obtained.
