The blow-up estimates of nonnegative blow-up solutions of the system u_t=Δu+u~(p_1)(x_0(t),t)v~(q_1)(x_0(t),t),v_t=Δv+u~(p_2)(x_0(t),t)v~(q_2)(x_0(t),t),u(x,0)=u_0(x),v(x,0)=v_0(x),where x_0:R~+→R~N is Hlder continuous,are studied. The conditions of simultaneous blow-up,blow-up rates and blow-up set are given.
The analyses of the results in lab - scale and full -scale experiment showed that treatment to the raw materials by explo-sion pulping method could not only keep the strength of the pulp and the products could meet the national standards, but also discharge less pollution load than that of conventional chemical - mechanical pulping processes.
The high and thick concrete wall and "\/" wall of the main structure of Wuhui floodgate were demolished by blasting using the method of upright holes and horizontal holes explosion simultaneously.
Considering the surrounding, location relationship and structure, the directional and vertical collapsing blasting was used to demolish three buildings.
Three simultaneous blow-up rates are established under different dominations of nonlinearities, and simply represented in a characteristic algebraic system introduced for the problem.
A large number of rocky cutting slopes and fill sub gardes are adopted when a railway runs though a Karst mountainous area. Because of cutting slope's construction, it is possible that the Karst cave not exposed on slope is uncovered, the cave roof becomes thinner of the physical and mechanical rocky roof characters of become worse, which may lead to the appearance of Karst collapse. In the paper, the basic law of development of Karst system inside carbonate rocky slope is analyzed and the basic characters...
The high and thick concrete wall and "\/" wall of the main structure of Wuhui floodgate were demolished by blasting using the method of upright holes and horizontal holes explosion simultaneously. The fund uses and copings in different phases were blasted by the methods of sublevel millisecond interval detonation, and the standing poles were exploded by the directional collapse.
Two frame buildings,No.1 and 2,are arranged in a line and separated by 7 meters.Because of limited environmental conditions,sequential collapsing to the west is merely permitted.The staircase located in the western end of the building No.2 is separated from main structure by a construction joint,becoming a separated structure with a large proportion of height to width.In the light of different features of the constructions to be demolished,the...