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Due to not consider the impact of feeder impedance, conventional droop control may result in instability and errors in proportional load sharing when implemented in medium micro-grid. In this paper, inherent limitations of conventional droop control are analyzed, then an improved droop control based on complex virtual impedance is proposed to achieve accurate proportional load sharing, in which complex...
Cytokines are of central importance in the regulation of hematopoiesis, immunity, inflammation, tissue remodeling, and embryonic development. Cytokine research is expected to provide the key to pharmacological manipulation of the immune response and commands the attention of a massive and highly focused biotechnology industry. Based upon the hypothetical secondary and tertiary structures, a superfamily...
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