nanogram

determination of nucleic acid at nanogram level by resonance light scattering of ferric nanoparticle

铁纳米粒子共振光散射测定纳克级核酸

delivery of nanogram payloads using magnetic porous silicon microcarriers

利用磁性多孔硅微载体对级的有效负载进行递送

the first test they did was with a virus dose of one nanogram.

他们做先将1纳克剂量的病毒做为实验的第一步。

after magnetite incorporation, the porous microparticle is still empty enough to accommodate nanogram quantities of a molecular payload;

结合有磁铁矿的多孔微粒仍然具有足够的空间负载纳克量的分子；

determination of nanogram samarium isotopic ratio by mass spectrometer

超微量钐同位素丰度比的质谱测定

The measurement method of the isotopic abundance ratios for the nanogram samarium was performed by Finnigan MAT 262-RPQ thermal ionization mass sepctrometer.

本文简介了使用Finnigan MAT262热电离质谱仪对超微量钐天然同位素丰度比的精密测定。