The support materials of ruthenium-based catalysts for ammonia synthesis were prepared using mixed solutions composed of magnesium nitrate, aluminum nitrate and
For the holonomic nonconservative system, by using the Noether symmetry, a non-Noether conserved quantity is obtained directly under general infinitesimal trans
The probability of 5He particle emission has been affirmed theoretically [J.S. Zhang, Science in China G47 (2004) 137]. In order to describe the 5He emission, t
A series of "hairy-rod" polyimides, BBPA(n), with multiple alkyl side chains was prepared from 3,3′,4,4′biphenyltetracarboxylic dianhydride (BPDA) and 4,4′-b
New exact solutions in terms of the Jacobi elliptic functions are obtained to the (2+1)-dimensional breakingsoliton equation by means of the modified mapping me
The Cu-Mo/ZSM-5 catalysts with different Cu/Mo ratios were prepared by wet impregnation method, and their catalytic performance for selective catalytic reductio
In order to build a rapid ocean ambient noise model adapted for a stratified shallow water, a hybrid model of normal mode method (for far field) and ray method
1,6-Dihydro-3-hydrozinocarbonyl-6-pyridazinone(compound 2) were prepared from α-ketoglutaric acid and hydrazine hydrate. A series of N-aryl-2-(1' ,6'-dihydro-6
The crystal structure of the title compound (C17H19Cl2N2O3P, Mr= 401.21) has been determined by single-crystal X-ray diffraction. The crystal is of monoclinic,
A series of 3. 0Mo/(Hβ+γ-Al2O3) samples with γ-Al2O3 contents in the range of 0-100% (mass fraction) was studied by means of XRD, NH3-TPD, TPR and BET determ