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γ‐Aromatic butenolides (γ‐AB) are an important type of structures found in many bioactive microbial secondary metabolites (SMs). γ‐AB refer to a group of natural products (NPs) containing five‐membered (unsaturated) lactones with 3‐phenyl and 4‐benzyl substituents. Their wide‐range biological activities have inspired pharmaceutical chemists to explore its biosynthesis mechanisms and design strategies...
This paper is the first to address the causal relationship between an abrupt change in the availability of public nutrition assistance and low‐income households' private nutrition assistance utilization. In particular, we examined the way in which loss of Women Infants and Children (WIC) benefits impacted a household's utilization of private food assistance. Using a regression discontinuity analysis...
R&D networks increase tremendously in recent decades. It is significant to better understand R&D networks and their effects to firms' performance. In this paper, by reviewing numbers of relevant literatures, we discuss the intension and extension of “R&D network” definitions, the evolution of R&D networks and their effects to firm's innovation performance.
Along with the online shopping experience of Chinese customers getting mature, the quality of online shopping service becomes the vital factor influencing customer loyalty. Only when providing superior service quality that perceived by customers, the online store will increase competitive advantage. Thus, to establish an applicable instrument to evaluate the service quality of Chinese online shopping...
Based on the experimental research on a pilot units of the chemical-biological flocculation process, the multi-input multi-output (MIMO) model and the multi-input single-output (MISO) model have been built followed by the back-propagation (BP) artificial networks. Trained by the data (water temperatures, flocculant dosages, recycle ratio, CODCr, TP, SS, etc.) from the six different operating modes...
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