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Luo F.,East China Institute of Technology | Batten S.R.,Monash University
Dalton Transactions | Year: 2010

A distinct method, lanthanide(iii)-doped pathway is for the first time utilized to replace lanthanide(iii) MOFs for the access of MOF-based luminescent sensing of metal ions. The research results revealed that this strategy is highly effective and displays several outstanding features. © 2010 The Royal Society of Chemistry.

Liu Y.,East China Institute of Technology
RSC Advances | Year: 2014

Composites of titanium dioxide-reduced graphene oxide (TiO2-RGO) have been prepared via an efficient and facile hydrothermal reaction of graphene oxide and Ti(OH)4 in a ethanol-water solvent. The structure and composition of the composites have been characterized by X-ray diffraction, Scanning electron microscopy, Brunauer-Emmett-Teller specific area analysis, X-ray photoelectron spectroscopy and ultraviolet-visible diffuse reflectance spectroscopy. The results showed that the TiO2-RGO composites exhibited a layered structure with well-dispersed anatase TiO2 on the surface of the reduced graphene oxide. Compared with the pure TiO2 nanoparticles, the composites had larger surface area, and extended the photoresponse range to the visible light region. The photocatalytic activity of the composites was much higher than that of TiO2 in the photodegradation of methyl orange (MO) under visible light irradiation. This journal is © the Partner Organisations 2014.

Jiang S.,East China Institute of Technology | Song S.,East China Institute of Technology
Applied Catalysis B: Environmental | Year: 2013

The catalytic performance of the supported Co3O4 on CNTs (Co3O4/CNTs) in the catalytic combustion of toluene was improved by tuning the surface structures of CNTs. The study results showed that the surface defect structures of CNTs could not only enhance the ability of Co3O4 to develop reduction/oxidation cycles, but also increase the proportion of the adsorbed oxygen species to the surface lattice oxygen ones. Thus, the defects of CNTs could improve the catalytic activity of Co3O4/CNTs and lower the complete conversion temperature of toluene. Moreover, the CO2 selectivity increased along with increasing the COOH amount of the CNTs. Therefore, by tuning the defect density and COOH amount, the conversion of toluene was completed at 257°C and the selectivity to CO2 achieved to ~100% on Co3O4/CNTs-120 catalyst, which is much better than Co3O4/Beta, Co3O4/ZSM-5 or Co3O4/SBA-15. Furthermore, compared with Pd/Beta and Pd/SBA-15 catalysts, Co3O4/CNTs showed a similar or even better catalytic performance, indicating the great potential application of Co3O4/CNT catalysts for the catalytic combustion of toluene. © 2013.

Sun X.,East China Institute of Technology
Applied Mechanics and Materials | Year: 2013

To the problem of visualization expression, under the ArcGIS space environment, I use the ArcObjects components to do the symbols allocation and visualization expression for spatial data and point, line and polygon target. Result shows that it has finished the visualization effect of spatial data and symbols in the geographical information system. © (2013) Trans Tech Publications, Switzerland.

Yin Y.,East China Institute of Technology | Cheng S.-R.,Cheng Shiu University | Wu C.-C.,Feng Chia University
Information Sciences | Year: 2012

We consider a scheduling environment with two agents and a linear non-increasing deterioration. By the linear non-increasing deterioration we mean that the actual processing time of a job belonging to the two agents is defined as a non-increasing linear function of its starting time. Two agents compete to perform their respective jobs on a common single machine and each agent has his own criterion to be optimized. The goal is to schedule the jobs such that the combined schedule performs well with respect to the measures of both agents. Three different objective functions are considered for one agent, including the maximum earliness cost, total earliness cost and total weighted earliness cost, while keeping the maximum earliness cost of the other agent below or at a fixed level U. We propose the optimal (nondominated) properties and present the complexity results for the problems addressed here. © 2011 Elsevier Inc. All rights reserved.

Yin Y.,East China Institute of Technology | Xu D.,East China Institute of Technology
Computers and Mathematics with Applications | Year: 2011

Learning and job deterioration co-exist in many realistic scheduling situations. This paper introduces a general scheduling model with the effects of learning and deterioration simultaneously which is a significant generalization of some existing models in the literature. By the effects of learning and deterioration, we mean that job processing times are defined by functions of their start times and positions in the sequence. This paper shows that the single-machine scheduling problems to minimize the makespan, sum of the kth power of completion times, total lateness and sum of earliness penalties (with a common due date) are polynomially solvable under the proposed model. It further shows that the problems to minimize the total weighted completion time, discounted total weighted completion time, maximum lateness, maximum tardiness, total tardiness and total weighted earliness penalties (with a common due date) are polynomially solvable under certain conditions. © 2010 Elsevier Ltd. All rights reserved.

Tagawa H.,Nagoya University | Gao J.,East China Institute of Technology
Journal of Constructional Steel Research | Year: 2012

This paper presents a new vibration control system for protection of steel structures from earthquakes. The proposed system, which uses a quasi-linear motion mechanism, achieves dissipation of seismic energy into the structure through yielding of U-shaped steel dampers. Based on the linear motion mechanism characteristics, the bracing members are subjected only to tensile force. This feature can eliminate the brace-buckling problem for braces, making rod members applicable to bracing members. This paper presents an outline of the vibration control system with subsequent evaluation of the lateral stiffness and strength of the frames with the proposed device. Six cyclic loading tests are conducted using the frame models with the proposed system. The accuracy of the evaluation is discussed by comparing the cyclic loading test results. © 2011 Elsevier Ltd. All rights reserved.

Qian Y.,East China Institute of Technology | Wang C.,East China Institute of Technology | Gao F.,Xuzhou Medical College
Biosensors and Bioelectronics | Year: 2015

A new strategy to combine Zn2+ assistant DNA recycling followed with hybridization chain reaction dual amplification was designed for highly sensitive electrochemical detection of target DNA. A gold electrode was used to immobilize molecular beacon (MB) as the recognition probe and perform the amplification procedure. In the presence of the target DNA, the hairpin probe 1 was opened, and the DNAzyme was liberated from the caged structure. The activated DNAzyme hybridized with the MB and catalyzed its cleavage in the presence of Zn2+ cofactor and resulting in a free DNAzyme strand. Finally, each target-induced activated DNAzyme underwent many cycles triggering the cleavage of MB, thus forming numerous MB fragments. The MB fragments triggered the HCR and formed a long double-helix DNA structure. Because both H1 and H2 were labeled by biotin, a lot of SA-ALP was captured on the electrode surface, thus catalyzing a silver deposition process for electrochemical stripping analysis. This novel cascade signal amplification strategy can detect target DNA down to the attomolar level with a dynamic range spanning 6 orders of magnitude. This highly sensitive and specific assay has a great potential to become a promising DNA quantification method in biomedical research and clinical diagnosis. © 2014 Elsevier B.V.

Song S.,East China Institute of Technology | Jiang S.,East China Institute of Technology
Applied Catalysis B: Environmental | Year: 2012

CuO/CNTs were prepared as catalysts for the selective catalytic oxidation of ammonia and demonstrated high catalytic activity and N 2 selectivity. The study results showed that the surface defects of carbon nanotubes (CNTs) could not only activate CuO, but also promote the electron transfer in the catalysis. Thus, along with increasing the defect density of the CNTs, the temperature for the complete ammonia oxidation could be decreased from 235°C to 189°C and the corresponding N 2 selectivity increased from 93.8% to 98.7%. Moreover, there was no apparent decrease in the catalytic activity at prolonged reaction time, indicating CuO/CNT catalysts are promising for the selective catalytic oxidation of ammonia. © 2012 Elsevier B.V.

Liu Y.,East China Institute of Technology
Iranian Polymer Journal (English Edition) | Year: 2015

An intumescent flame retardant (IFR), a Schiff-base polyphosphate ester (PAB)-functionalized montmorillonite (PAB-MMT) was combined with PAB to adopt into ethylene–vinyl acetate copolymer (EVA) by melting intercalation. The synergistic effect between PAB-MMT and PAB was evaluated by thermogravimetric analysis (TGA), transmission electron microscopy (TEM), limiting oxygen index (LOI), vertical burning test (UL-94), microscale combustion colorimeter (MCC) and scanning electron microscopy (SEM). The results showed that when 5.0 wt% PAB-MMT replaced the same amounts of Na-MMT in the composite, the flame retardancy of EVA/PAB composite was improved. For this composite, the LOI value was increased and the ignition time in UL-94 rating was shortened compared to pure EVA or composites containing PAB or Na-MMT/PAB. The MCC results indicated that the peak heat release rate (PHRR) and total heat release (THR) were significantly reduced in comparison with other EVA nanocomposites. Meanwhile, the TGA data showed that the EVA/PAB/PAB-MMT nanocomposite had higher char residue than the EVA/PAB and EVA/PAB/Na-MMT nanocomposites. The TEM and dispersibility measurement results showed that PAB-MMT had better dispersion than Na-MMT. The SEM results demonstrated that the minimal loading levels of PAB-MMT in EVA/PAB/PAB-MMT composite had a well-structured and strong char which had better ability to endure heat erosion. A good synergistic effect between PAB-MMT and PAB was constructed. © 2015, Iran Polymer and Petrochemical Institute.

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