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Synthesis, characterization and fluorescence quenching of conjugated polymer containing triphenylamine

LIU Feng, XIAO Jianhua, REN Weihua, HU Jun, LIU Honglai

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 4,   Pages 428-433 doi: 10.1007/s11705-008-0083-3

Abstract: Poly(triphenylamine--phenylenevinylene)s with two different end-groups were obtained through a WittigUltraviolet and visible spectroscopy (UV-Vis) and photoluminescence (PL) spectra show the end-cappedpolymer emits intensive green light in both solution and film state.nitro compounds were investigated, and the results show high fluorescence quenching sensitivity of the end-cappedpolymer towards -nitrotoluene (-NT).

Keywords： detection     different     fluorescence     UV-Vis     end-capped polymer    

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Topology-independent end-to-end learning model for improving the voltage profile in microgrids-integrated

Frontiers in Energy 2023, Volume 17, Issue 2,   Pages 211-227 doi: 10.1007/s11708-022-0847-3

Abstract: studies that realize topology identification and decision-making optimization in sequence, the proposed end-to-endIn particular, the generator in SCAN is trained by the core modules in sequence so as to form an end-to-end

Keywords： end-to-end learning     microgrids     voltage profile improvement     generative adversarial network    

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Cube-octameric silsesquioxane (POSS)-capped magnetic iron oxide nanoparticles for the efficient removal

Ali Akbari, Nasser Arsalani, Bagher Eftekhari-Sis, Mojtaba Amini, Gholamreza Gohari, Esmaiel Jabbari

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 3,   Pages 563-573 doi: 10.1007/s11705-018-1784-x

Abstract: Octavinyl polyhedral oligomeric silsesquioxane (POSS) was polymerized on the surface of Fe O nanoparticles (NPs) and then the NPs were functionalized with carboxylic acid groups using thiol-ene click reactions with thioglycolic acid. The as-prepared Fe O @POSS-COOH magnetic hybrid NPs had mesoporous structures with an average particle diameter of 15 nm and a relatively high specific surface area of 447 m ∙g . Experimental results showed that 4 mg of Fe O @POSS-COOH NPs efficiently adsorbed and removed methylene blue from water at 5 min. This is due to the presence of both carboxylic acid and pendant vinyl groups on the Fe O @POSS-COOH NPs. These NPs could be easily withdrawn from water within a few seconds under moderate magnetic field and showed high stability in acid and alkaline aqueous mediums.

Keywords： nanomagnetic POSS     surface polymerization     thiol-ene reaction     adsorbent     water treatment    

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Efficient decoding self-attention for end-to-end speech synthesis Research Article

Wei ZHAO, Li XU

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 7,   Pages 1127-1138 doi: 10.1631/FITEE.2100501

Abstract: has been innovatively applied to text-to-speech (TTS) because of its parallel structure and superior strength in modeling sequential data. However, when used in with an autoregressive decoding scheme, its inference speed becomes relatively low due to the quadratic complexity in sequence length. This problem becomes particularly severe on devices without graphics processing units (GPUs). To alleviate the dilemma, we propose an (EDSA) module as an alternative. Combined with a dynamic programming decoding procedure, TTS model inference can be effectively accelerated to have a linear computation complexity. We conduct studies on Mandarin and English datasets and find that our proposed model with EDSA can achieve 720% and 50% higher inference speed on the central processing unit (CPU) and GPU respectively, with almost the same performance. Thus, this method may make the deployment of such models easier when there are limited GPU resources. In addition, our model may perform better than the baseline Transformer TTS on out-of-domain utterances.

Keywords： Efficient decoding     End-to-end     Self-attention     Speech synthesis    

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Organic conjugated polymers and polymer dots as photocatalysts for hydrogen production

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 667-677 doi: 10.1007/s11708-021-0767-7

Abstract: Among them, organic polymer dots process large breadth of potential synthetic diversity are the representativeIn this mini-review, first, the organic polymer photocatalysts were introduced.Then, recent reports on polymer dots which showed a superior photocatalytic activity and a robust stabilityFinally, challenges and outlook on using organic polymer dots-based photocatalysts from hydrogen production

Keywords： polymer dots (Pdots)     photocatalysis     hydrogen production    

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Comparison on End-of-Life strategies of WEEE in China based on LCA

Bin Lu, Xiaolong Song, Jianxin Yang, Dong Yang

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 5, doi: 10.1007/s11783-017-0994-7

Abstract: It becomes an urgent issue to develop and adopt an effective End-of-Life (EoL) strategy for EEE in order

Keywords： End-of-Life     Waste electrical and electronic equipment     Life cycle assessment     Reuse    

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Development and application of high-end aerospace MEMS

Weizheng YUAN

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 4,   Pages 567-573 doi: 10.1007/s11465-017-0424-3

Abstract:

This paper introduces the design and manufacturing technology of aerospace microelectromechanical systems (MEMS) characterized by high performance, multi-variety, and small batch. Moreover, several kinds of special MEMS devices with high precision, high reliability, and environmental adaptability, as well as their typical applications in the fields of aeronautics and aerospace, are presented.

Keywords： MEMS     design and manufacture technology     aeronautic and aerospace    

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End-to-end delay analysis for networked systems

Jie SHEN,Wen-bo HE,Xue LIU,Zhi-bo WANG,Zhi WANG,Jian-guo YAO

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 9,   Pages 732-743 doi: 10.1631/FITEE.1400414

Abstract: End-to-end delay measurement has been an essential element in the deployment of real-time services inWe propose a novel theoretical framework to analyze the end-to-end delay distributions of networked systemsWe use a signal flow graph to model the delay distribution of a networked system and prove that the end-to-endBy analyzing the time responses of the transfer function, we obtain the end-to-end delay distribution

Keywords： Networked system     End-to-end     Delay distribution    

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Experimental study on pile-end post-grouting piles for super-large bridge pile foundations

Weiming GONG, Guoliang DAI, Haowen ZHANG

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 2,   Pages 228-233 doi: 10.1007/s11709-009-0019-0

Abstract: The application of pile-end post-grouting piles for super-large bridge pile foundations in some important

Keywords： self-balanced testing technique     pile-end post-grouting     bearing capacity     grouting technology    

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Requirement Analysis of High-End Manufacturing Equipment with a Focus on the High-End Equipment Manufacturing

Zhang Jun and Lu Bingheng

Strategic Study of CAE 2017, Volume 19, Issue 3,   Pages 136-141 doi: 10.15302/J-SSCAE-2017.03.019

Abstract:

The continual development of high-end manufacturing equipment is essentialfor the development of the high-end equipment manufacturing industry.during the 13th Five-Year Plan, these authors analyze the new demands and future priorities of high-endenterprises in China, this paper puts forward suggestions to promote the sound development of the high-end

Keywords： high-end equipment manufacturing industry     high-end manufacturing equipment     machine tool     basic manufacturing    

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Engineering management for high-end equipment intelligent manufacturing

Shanlin YANG, Jianmin WANG, Leyuan SHI, Yuejin TAN, Fei QIAO

Frontiers of Engineering Management 2018, Volume 5, Issue 4,   Pages 420-450 doi: 10.15302/J-FEM-2018050

Abstract:

The high-end equipment intelligent manufacturing (HEIM) industry is of strategic importance to national

Keywords： high-end equipment     intelligent manufacturing     engineering management     information technology    

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Construction of interfacial dynamic bonds for high performance lignin/polymer biocomposites

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1372-1388 doi: 10.1007/s11705-023-2302-3

Abstract: The development of lignin/polymer biocomposites can promote the high value utilization of lignin andHowever, the weak interfacial interaction between industrial lignin and polymer induces poor compatibilityand serious agglomeration in polymer owing to the strong intermolecular force of lignin.As such, it is extremely difficult to prepare high performance lignin/polymer biocomposites.The lignin-modified polymer composites achieved simultaneously enhanced strength and toughness.

Keywords： lignin     polymer     interfacial dynamic bonds    

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An end-to-end 3d seismic simulation of underground structures due to point dislocation source by using

Zhenning BA; Jisai FU; Zhihui ZHU; Hao ZHONG

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 12,   Pages 1515-1529 doi: 10.1007/s11709-022-0887-0

Abstract: Based on the domain reduction idea and artificial boundary substructure method, this paper proposes an FK-FEM hybrid approach by integrating the advantages of FK and FEM (i.e., FK can efficiently generate high-frequency three translational motion, while FEM has rich elements types and constitutive models). An advantage of this approach is that it realizes the entire process simulation from point dislocation source to underground structure. Compared with the plane wave field input method, the FK-FEM hybrid approach can reflect the spatial variability of seismic motion and the influence of source and propagation path. This approach can provide an effective solution for seismic analysis of underground structures under scenario of earthquake in regions where strong earthquakes may occur but are not recorded, especially when active faults, crustal, and soil parameters are available. Taking Daikai subway station as an example, the seismic response of the underground structure is simulated after verifying the correctness of the approach and the effects of crustal velocity structure and source parameters on the seismic response of Daikai station are discussed. In this example, the influence of velocity structure on the maximum interlayer displacement angle of underground structure is 96.5% and the change of source parameters can lead to the change of structural failure direction.

Keywords： source-to-structure simulation     FK-FEM hybrid approach     underground structures     point dislocation source    

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Effect of polymer structures on electro-optical properties of polymer stabilized liquid crystal films

WANG Shoulian, HE Jie, ZENG Yu, YAN Bin, WANG Yinghan

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 3,   Pages 265-268 doi: 10.1007/s11705-008-0054-8

Abstract: The polymer stabilized liquid crystal (PSLC) film is a relatively novel electro-optical material, whichthose from the single functional monomer exhibited a deformed electro-optical curve due to the unsteady polymer
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Optimization of cold-end system of thermal power plants based on entropy generation minimization

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 956-972 doi: 10.1007/s11708-021-0785-5

Abstract: Cold-end systems are heat sinks of thermal power cycles, which have an essential effect on the overallHowever, little attention has been paid to the optimization of the cold-end system with multi-pressureThe results show that the entropy generation rate of the multi-pressure cold-end system is less thanthat of the single-pressure cold-end system when the total condenser area is constant.quadruple-pressure cold-end systems are 575 and 580 k$/a, respectively.

Keywords： cold-end system     entropy generation minimization     optimization     economic analysis     genetic algorithm    

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Title Author Date Type Operation

Synthesis, characterization and fluorescence quenching of conjugated polymer containing triphenylamine

LIU Feng, XIAO Jianhua, REN Weihua, HU Jun, LIU Honglai

Journal Article

Topology-independent end-to-end learning model for improving the voltage profile in microgrids-integrated

Journal Article

Cube-octameric silsesquioxane (POSS)-capped magnetic iron oxide nanoparticles for the efficient removal

Ali Akbari, Nasser Arsalani, Bagher Eftekhari-Sis, Mojtaba Amini, Gholamreza Gohari, Esmaiel Jabbari

Journal Article

Efficient decoding self-attention for end-to-end speech synthesis

Wei ZHAO, Li XU

Journal Article

Organic conjugated polymers and polymer dots as photocatalysts for hydrogen production

Journal Article

Comparison on End-of-Life strategies of WEEE in China based on LCA

Bin Lu, Xiaolong Song, Jianxin Yang, Dong Yang

Journal Article

Development and application of high-end aerospace MEMS

Weizheng YUAN

Journal Article

End-to-end delay analysis for networked systems

Jie SHEN,Wen-bo HE,Xue LIU,Zhi-bo WANG,Zhi WANG,Jian-guo YAO

Journal Article

Experimental study on pile-end post-grouting piles for super-large bridge pile foundations

Weiming GONG, Guoliang DAI, Haowen ZHANG

Journal Article

Requirement Analysis of High-End Manufacturing Equipment with a Focus on the High-End Equipment Manufacturing

Zhang Jun and Lu Bingheng

Journal Article

Engineering management for high-end equipment intelligent manufacturing

Shanlin YANG, Jianmin WANG, Leyuan SHI, Yuejin TAN, Fei QIAO

Journal Article

Construction of interfacial dynamic bonds for high performance lignin/polymer biocomposites

Journal Article

An end-to-end 3d seismic simulation of underground structures due to point dislocation source by using

Zhenning BA; Jisai FU; Zhihui ZHU; Hao ZHONG

Journal Article

Effect of polymer structures on electro-optical properties of polymer stabilized liquid crystal films

WANG Shoulian, HE Jie, ZENG Yu, YAN Bin, WANG Yinghan

Journal Article

Optimization of cold-end system of thermal power plants based on entropy generation minimization

Journal Article