pr3

Crystal analysis of spectrum for the pr3 + : yag

钇铝石榴石中三价镨离子谱的晶场分析

The results show that when high content Pr3 + is introduced in the glass , the glass features high linear and nonlinear refractive index .

结果表明：高浓度的Pr3+引入到碲铌铅玻璃系统后，仍能够形成均匀透明的玻璃，该玻璃具有高的折射率和非线性折射率。

The thesis emphasizes on the irradiation resistance of lead-free glasses and luminescence properties of Pr3 + doped glasses .

本论文研究了无铅铋基玻璃的抗辐照性能和Pr3+掺杂磷酸盐玻璃的发光性能。

The optical spectroscopic properties of Pr3 + doped tellurite glasses were investigated according to the absorption spectra around 980 nm and the emission spectra .

根据掺Pr3+碲酸盐玻璃在980nm附近的吸收谱及1.31μm和可见光区间内的荧光发射谱，硎究了玻璃样品光谱特性随稀土离子浓度变化的规律及其上转换发光。

Vacuum ultraviolet ( VUV ) excitation and emission spectra of YAG : Pr3 + at different temperatures are measured using synchrotron radiation as an excitation source .

在不同温度下用同步辐射的真空紫外光（UV）为激发光源测量了其发射和激发光谱。

Experimental evidences of energy transfer from Pr3 + to Yb3 + were presented by the excitation spectra , emission spectra as well as decay curves at room temperature .

常温下的激发谱，发射谱以及衰减曲线给出了Pr3+-yb3+之间存在能量传递的证据。

Seventeen of the 145 patients were cytoplasmic ANCA ( c ANCA ) positive and all recognized the proteinase 3 ( PR3 ) .

胞浆型ANCA（cANCA）阳性17例，均识别蛋白酶3（PR3）；

Results Of the 426 patients , 70 were cytoplasmic ANCA ( cANCA ) positive , all of them recognized proteinase 3 ( PR3 );

结果426例患者中，70例胞浆型ANCA（cANCA）阳性，均识别蛋白酶3（PR3）；

Theoretical analysis reveals that the dominant mechanism of energy transfer from Dy3 + ion to Pr3 + ion is quadrupole-quadrupole interactions with the estimated transfer efficiency up to 52.9 % .

详细的理论分析表明，本实验中从Dy3+到pr3+的主要能量传递过程机理是四极-四极作用，估算最大能量传递效率为52.9%。

The result demonstrated lattice volumes have some contraction when the Pr doping increase , which is because the radius of Pr3 + is smaller than La3 + .

由XRD结果计算得出随着Pr掺杂量的增加，材料晶胞体积发生收缩，这是主要是由于Pr3+的半径小于La3+的原因。

After calcination at 500 ℃ for 2h . 0.5 % ( in mole per cent ) Pr3 + - TiO2 powders show that the nanocrystalline TiO2 with anatase phase .

采用X光衍射仪对粉体的物相进行了表征.样品经500℃焙烧2h后，0.5%（摩尔分数）Pr3+-TiO2纳米粉末为单一的锐钛型结构。

Under the excitation at 447 nm , the ratios of intensities of blue , green and red light to that of yellow light can be controlled by adjusting the concentration of Pr3 + ion .

在447nm激发光下，通过改变pr3+浓度可以调节发出的蓝光、绿光和红光相对黄光的强度比率。

In addition , Sm3 + , Dy3 + and Pr3 + were doped into the mesoporous TiO2 in order to increase the catalysts activity and realize visible-light responsive of mesoporous TiO2 .

在此基础上，为提高介孔TiO2的光催化活性，实现其可见光响应，尝试了将稀土离子钐、镝和镨掺杂到介孔TiO2中。

Experiments show that the adsorbents adsorption equilibrium to Pr3 + and Nd3 + is affected by temperature and pH value . In the range of 293 K ~ 323 K , the adsorption capacity of the novel adsorbents to Pr3 + and Nd3 + increases with increasing of temperature .

结果表明：温度在293K~323K的范围内，Pr3+，Nd3+的吸附平衡量随温度的升高略有增加。