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Han Y.,CAS Chengdu Institute of Organic Chemistry | Han Y.,Second Research Institute of Civil Aviation Administration of China CAAC | Chu Z.,CAS Chengdu Institute of Organic Chemistry | Sun H.,Sinopec | And 3 more authors.
RSC Advances | Year: 2012

In such application fields as oilwell stimulation, tertiary oil recovery and drug release, environmental-friendly wormlike micelles are largely preferred. The present work reports a "green" wormlike micellar system formed by a bio-based anionic surfactant, sodium erucate (NaOEr), and a biodegradable hydrotrope, choline. The micellar solutions were examined by means of rheology and cryo-TEM observation. Besides possessing lower toxicity, choline exhibits a stronger ability to induce micelle growth than tetramethylammonium, which is commonly used to promote the formation of anionic worms, and the choline-NaOEr system is more thermosensitive with increasing counterion concentration. These notable advantages enable the choline-NaOEr wormlike micellar system to find potential applications in biomedical areas and clean fracturing fluids. © 2012 The Royal Society of Chemistry. Source


Li J.,Second Research Institute of Civil Aviation Administration of China CAAC | Wang G.Q.,Second Research Institute of Civil Aviation Administration of China CAAC | Zhu P.,Second Research Institute of Civil Aviation Administration of China CAAC | Lu X.,Guilin Air Traffic Management Station of Civil Aviation of China | Su J.,Guilin Air Traffic Management Station of Civil Aviation of China
MATEC Web of Conferences | Year: 2016

A-SMGCS is a modular system defined in the ICAO (International Civil Aviation Organization) Manual on Advanced Surface Movement Guidance and Control System (A-SMGCS).One of A-SMGCS goals is to provide enhanced safety and protection of the runway. This paper presents a novel runway incursion detection approach for A-SMGCS, in which a multiple protected area is proposed to decrease complexity of pre-Treatment for incursion judgment, and a flight status machine is designed to specify the transitions of one flight from one target status to another. Additionally, an HMI (Human Machine Interface) independently developed by the Second Research Institute of CAAC (Civil Aviation Administration of China) was designed in order to validate the runway incursion detection approach, the result shows that the algorithm has the potential to significantly improve runway safety by early detection and alerting of runway incursions. © Owned by the authors, published by EDP Sciences, 2016. Source


Zhou H.,Second Research Institute of Civil Aviation Administration of China CAAC | Mei Y.,Second Research Institute of Civil Aviation Administration of China CAAC | Wang H.,Second Research Institute of Civil Aviation Administration of China CAAC
Journal of Macromolecular Science, Part B: Physics | Year: 2010

A hydrophobically modified poly(acrylic acid) (HMPA) with twin-tailed hydrophobic pendant side groups was prepared by precipitation polymerization. The rheology behavior of HMPA was examined in mixtures of water and ethylene glycol (EG) of different proportions. It was shown that the solvent had a direct impact on both the steady and dynamic rheology behaviors of the HMPA solutions. The change of hydrophobic interactions in the EG-rich mixtures may be attributed to the observed decrease in polymer coil dimension together with a lower tendency of the hydrophobes to form junctions. As the temperature decreased, the viscosities and numbers of active junctions of HMPA in water-EG mixtures increased. Copyright © 2010 Taylor & Francis Group, LLC. Source


Yongqiang W.,Second Research Institute of Civil Aviation Administration of China CAAC | Yixiu H.,Second Research Institute of Civil Aviation Administration of China CAAC | Hong Z.,Second Research Institute of Civil Aviation Administration of China CAAC | Ke W.,University of Sichuan | And 2 more authors.
Journal of Solution Chemistry | Year: 2015

Abstract The interactions between hydrophobically modified polyacrylic acid (HMPAA) and wormlike micelles (worms) were investigated by a well-designed rheological measurement procedure. For worms formed by sodium oleate and benzyltrimethylammonium bromide, remarkable rheology enhancement was observed once a small amount of HMPAA was introduced. Moduli enhancement and varied shear thickening or hysteresis behaviors were observed with changing HMPAA content of the mixture. Only at low HMPA content and low shear rate was shear-thickening observed. With the support of DPD simulation, it was found that low-rate shear can induce a coil-to-bridge transition of HMPAA conformation at low concentration. The relationship between the network structure and rheological properties are discussed. The transition of aggregation modes and the enrichment of the network should be responsible for the enhancement of the rheology. © 2015 Springer Science+Business Media New York. Source


Hong Z.,Second Research Institute of Civil Aviation Administration of China CAAC | Yongjun M.,Second Research Institute of Civil Aviation Administration of China CAAC | Hang W.,Second Research Institute of Civil Aviation Administration of China CAAC | Lin X.,Second Research Institute of Civil Aviation Administration of China CAAC
Journal of Solution Chemistry | Year: 2010

Hydrophobically modified poly(acrylic acid) (HMPA) with single-tailed pendant side groups was prepared by precipitation polymerization. The effects of polymer concentration, surfactant and co-solvent on the solution properties of HMPA were investigated. HMPA solutions showed good viscosity enhancement and typical shear thinning behavior with increasing concentration. The surfactant TX-10 and co-solvent ethylene glycol gave rise to factors that changed the hydrophobic interactions and in turn the rheology behavior of the solutions. The transient associative network of HMPA in ethylene glycol + water mixed solutions was retained as the temperature was decreased to below 0∈°C. © 2010 Springer Science+Business Media, LLC. Source

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