Zhang Yujin

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Feedback Type Electronic Load is a load to simulate the characteristics of the new power electronic devices, which can be used as test equipment. The energy can be feedback to the utility power system with little loss and high power factor. This paper introduce a practical system. System consists of the control circuits, main circuits and detection(More)
In recent years, environmental and energy problem has become one of the world's hot spot problems. Today, the road cars not only consume a lot of oil resource, but also cause serious pollution to human survival environment. Therefore, to save energy and protect environment, a green environmental friendly electric car instead of fuel car will be needed for(More)
The changes of platelet fibrinogen in patients with obscure cutaneous mucosal bleeding and their relation with disease were evaluated. By using flow cytometry and Western blot, the platelet binding site of fibrinogen and the expression of platelet fibrinogen in 8 cases of obscure bleeding were detected. The results showed that platelet surface binding sites(More)
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