Performance evaluation of two fundus oculi angiographic imaging system: Optos 200Tx and Heidelberg Spectralis.

The present study aimed to compare the imaging performance of two ultra-wide-field fluorescein angiography imaging systems, namely the OptosOptomap 200Tx (Optos 200Tx) and the Heidelberg Spectralis (Spectralis). A total of 18 patients (36 eyes) underwent angiography using the two systems at the Department of Ophthalmology, Beijing Friendship Hospital (Beijing, China) between January and June 2017. The images were obtained as a single shot centered on the macula.

The mechanism of controllable dehydrogenation: CPMD study of M(BH4)x(NH3)y (M = Li, Mg) decomposition.

Amine metallic borohydrides were synthesized as a new series of hydrogen-storage materials. Their dehydrogenation can be controlled if appropriate metal centres are chosen. A typical example is LiBH4NH3 (ALB) and Mg(BH4)2(NH3)2 (AMgB) adopt the same symmetries but show totally different appearances when decomposed.