Description of three new species of Gomphomastacinae (Orthoptera: Eumastacoidea) from the east of Qinghai-Tibet plateau, China.

The grasshopper Subfamily Gomphomastacinae (Orthoptera: Acridoidea: Eumastacidae) is widely distributed in the Qinghai-Tibetan Plateau and Central Asia. This paper describes three new species: Ptygomastax nihilsulcus Ge, sp. nov.

[The design and implementation of video processing system for medical electronic endoscopy].

This paper presents a medical electronic endoscopy real-time image acquisition and control system which consists of video codec chip, flash memory and FPGA. The hardware scheme and circuit design of the system is figured out, and the principle of ping-pong operation and the implementation of FPGA program is introduced. Experimental tests show that the designed system performs steadily, is easy to maintain, and reduces the cost greatly.

[Study on spectroscopy of alpha, alpha'-dioxoketene cyclic s, s-acetals].

The rule of infrared spectroscopic characteristics of the five alpha, alpha'-dioxoketene cyclic s, s-acetals was studied, and the influence of the molecular structure on the IR was indicated. All 1H and 13C NMR chemical shifts of the five compounds were assigned, and the effects of structures on the chemical shifts of 1H and 13C NMR were discussed. The rule of change is the same as that of IR.

Binary competitive adsorption of naphthalene compounds onto an aminated hypercrosslinked macroporous polymeric adsorbent.

An aminated hypercrosslinked macroporous polymeric adsorbent was synthesized and characterized. Adsorption isotherms for 1-amino-2-naphthol-4-sulfonic acid (1,2,4-acid) and 2-naphthol obtained from various binary adsorption environments can be well fitted by Freundlich equation, which indicated a favorable adsorption process in the studied range. Adsorption for 1,2,4-acid was an endothermic process in comparison with that for 2-naphthol of an exothermic process.