“Elemental carbon” (EC) is a C-rich,O-H-S-N-depleted substance that is necessarily produced in the process of combustion. Due to the long-term use of fire by
Two phases of sinistral strike-slip ductile shear belts occur on the eastern margin of the Dabie orogenic belt. A muscovite ^40Ar/^39Ar plateau age of 128 Ma wa
Results of Mossbauer spectroscopy and ICP-AES measurement revealed a special distribution pattern of iron species in four crossing profiles of the Tertiary Form
(f(x), m)-interleaved sequences over Fq have been proposed and studied. Roughly speaking, an (f(x), m)-interleaved sequence is a sequence which is made of (or s
Fibronectin, a major extracellular matrix, plays an important role in embryo implantation by mediating embryo adhesion and outgrowth. In this work, mouse blasto
热传导的半导体设备的数学模型被四个方程的一个系统描述了。在 L2 标准的最佳的顺序估计在 approximates 答案为错误被导出，提出一种典型有限差别部分步方法。
The concepts of neural network and tree structure are introduced to rare earth separations. The recursive relations and analytical expression for calculating th
In the medium of H2O, C2H5OH and HAC, the reaction of Gd(NO3)3-6H2O with C6H5COONa and C12H8N2 produced a novel binuclear Gd(Ⅲ) complex in formula [Gd2(C12H8N2
A brown planthopper (BPH) resistance line, B5, derived its resistance genes from the wild rice Oryza offici-nalis Wall exwatt, was hybridized with Taichung Nati
本文意在揭示梯形与其他常见平面图形及其面积公式之间的联系,期望对读者有所启迪. 原题如图1,在梯形ABCD中,AB∥CD,设AB=a,CD=b,高为h,面积为S,则S=1/2(a+b)h.联想之一在图