Due to the ferro-philic and rock-philic geochemical properties, dispersion of resources as well as itscomplicated composition, the properties of scandium are si
RE(NO<sub>3</sub>)<sub>3</sub>-HNO<sub>3</sub>-P507-kerosene extraction system(RE=La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb,Lu,Y)was studied by the response surface te
This paper describes the excitation spectra nearby 220hm of CaS:Ce<sup>3+</sup>,Na<sup>+</sup> and CaS:Ce<sup>3+</sup>,X<sup>-</sup>(X=F,Clor Br).It is considered
The phosphors of ABF<sub>4</sub>:Eu<sup>2+</sup>and A<sub>2</sub>SiF<sub>6</sub>:Eu<sup>2+</sup>(A=Na,K,Rb,Cs)have been synthesized,and thecrystallographic data o
The magnetic properties of Nd<sub>16</sub>Fe<sub>77</sub>B<sub>7</sub> and Nd<sub>16</sub>Fe<sub>(61-x)</sub>Co<sub>16</sub>Ga<sub>x</sub>B<sub>7</sub>(x=0,1,2
The electrode process of Y<sup>3+</sup>ion on molybdenum and nickel electrodes has been studied by cyclicvoltammetry and chronopotentiometry in the YCl<sub>3</s