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In this paper, the combustion process parameters of 330MW coal-fired boiler are taken as the research object. In view of the massive system data of thermal power plant, the multivariable mutual characteristics of the coal-fired boiler and the DCS stores a dynamic, high-dimensional and massive time series data. Time series forecasting method is introduced into NOx forecasting of thermal power plant in this paper. And a NOx emission forecasting model based on long short-time memory neural network is designed by using deep learning method. The research results show that LSTM can deal with NOx emissions of thermal power units very well.

The μ-opioid receptor (μOR) is a G-protein-coupled receptor (GPCR) and the target of most clinically and recreationally used opioids. The induced positive effects of analgesia and euphoria are mediated by μOR signalling through the adenylyl cyclase-inhibiting heterotrimeric G protein Gi. Here we present the 3.5 Å resolution cryo-electron microscopy structure of the μOR bound to the agonist peptide DAMGO and nucleotide-free Gi. DAMGO occupies the morphinan ligand pocket, with its Nterminus interacting with conserved receptor residues and its Cterminus engaging regions important for opioid-ligand selectivity. Comparison of the μOR-Gi complex to previously determined structures of other GPCRs bound to the stimulatory G protein Gs reveals differences in the position of transmembrane receptor helix 6 and in the interactions between the G protein α-subunit and the receptor core. Together, these results shed light on the structural features that contribute to the Gi protein-coupling specificity of the µOR.

In order to meet the requirements of real-time measurement and regulation, a capacitance concentration measurement system for pulverized coal is developed in this paper, which is designed based on differential-capacitive, relaxation oscillator and wireless sensor networks. The experimental results indicate that the linearity and the resolution of the measurement system can respectively reach 7.5% and 0.005% under laboratory conditions. (4 pages)