Suchergebnisse

The perceived self-regulation of Chinese world-class athletes were examined in this study. Qualitative data from 14 athletes were analyzed by a grounded theory method. The feelings of Chinese elite athletes who achieved either successful or unsuccessful self-regulation were noted. Results
showed that successful self-regulation involved a calm mental state, smooth rhythm in performance, concentration, and flow, whereas rhythmic disorder, stress, mental fatigue, and loss of flow were cited by athletes during unsuccessful self-regulation. Our analysis indicated that a calm mind,
rhythmic preparation, and lack of pressure were the major factors contributing to the maintenance of control. Preparation that was not well-planned and regular, the influence of stress, and mental fatigue did not support successful performance.

The importance of urban energy system for buildings -- Integration of urban energy systems with renewable envelope solutions at building cluster level -- Urban solar mobility: from solar to buildings, vehicles, and storage -- Data centers as prosumers in urban energy systems -- Characteristics of urban energy system in positive energy districts -- Economic interactions between autonomous photovoltaic owners in a local energy market -- Electric vehicle smart charging characteristics on the power regulation abilities.

AbstractIn this work, a new cationic flocculant, CMCTS‐g‐CPAM was synthesized by acrylamide (AM), methacryloyloxyethyltrimethylammonium chloride (DMC) and carboxymethyl chitosan (CMCTS) through UV initiated graft polymerization techniques. The structure of CMCTS‐g‐CPAM was analysed by infrared spectroscopy (IR), nuclear magnetic resonance spectroscopy (1H NMR) and X‐ray diffraction (XRD) techniques which indicates that AM and DMC are grafted successfully onto CMCTS to obtain CMCTS‐g‐CPAM. The potential of CMCTS‐g‐CPAM for the sludge dewatering was investigated. The effects of cationic degree, intrinsic viscosity, dosage and pH on the sludge dewatering performance were studied. The results indicate that the optimal dewatering performance with minimum supernatant turbidity of 5.40 NTU, the moisture content of the filter cake of 79.28% and the specific resistance of the sludge of 1.96 × 1013 m/kg was obtained at 30 mg/L CMCTS‐g‐CPAM at pH 9–10. Finally, from the microscopic and electron micrographs investigation, it was confirmed that the particle size of the CMCTS‐g‐CPAM treated sludge was significantly large to enhance hydrophobicity and improve dewatering performance.