党的十一届三中全会以后,无锡市三麦生产曾创两项历史记录:一项是1982年单产达到269kg;另一项是1984年总产突破5亿kg大关,达5.06亿kg。但从1985至1991年,连续7年单产均未达
We consider the equation ut=Tr[B(x,t,Du,φu)D2u]+F(x,t,u,Du,φu,ψu) whereφ and ψ are vector-valued mappings. We obtain the existence and uniqueness of classi
棉花具有无限生长习性,在适宜的条件下,生长时间越长,越易于夺高产。近年来,大面积推广营养钵育苗,就是在早春低温的情况下,采用保护栽培育苗,延长棉花生育期,从而达到早发
In this paper the nonexistence for weak solutions of some degenerate evolution inequalities on groups of Heisenberg type is studied.
Structure of least-energy solutions to singularly perturbed semilinear smooth domain, is precisely studied as ε→ 0+, for 0 ＜α＜ 1 and a superlinear,subcritical
In this paper,we study the limit behavior of self-similar solutions for the Complex Ginzburg-Landau (CGL) equation in the nonstandard function space Es,p.We pro
本试验在净作和套作两种种植模式下,以本地大豆品种B4(贡选1号)和B5(南豆12)为对照,研究了具有特殊结瘤能力的引进大豆品种(系)B1(nts1007)、B2(nod139)及其亲本B3(bragg)在净套作下的农艺性状、光合特性、糖氮代谢以及产量和品质,主要研究结果如下:1.套作条件下大豆主茎高增加,茎粗减小,分枝数和根瘤数降低,引进大豆品种的变幅均明显高于本地品种。净作条件下,引进大豆品种B
In this article we discuss the relation between Heisenberg’s inequality and logarithmic Heisenberg’s (entropy) inequality for ambiguity function. After buildi
This paper is a continuation of the previous paper in the Joual of Partial Differential Equations [1]. We derive in this paper the renormalized energy to furthe
In this paper we study the initial boundary value problem of GBBM equations on unbounded domain ut - △ut = divf(u)u(x, 0) = u0(x)and corresponding Cauchy probl