Search results for: Zhenyu Gu

Items from 1 to 20 out of 36 results

article

Photocatalytic [3+2] Cycloaddition of Alkyl/aryl Iodides and Internal Alkynes by Merging Halogen and Hydrogen Atom Transfer

Zhenyu Gu, Rong Jia, Tianqing Zeng, Hanliang Zheng, more

Chinese Journal of Chemistry > 42 > 19 > 2329 - 2334

A visible light photocatalytic [3+2] cycloaddition of alkynes with readily accessible organic iodides as the C3 synthon is developed herein. By merging halogen atom transfer (XAT) and hydrogen atom transfer (HAT), alkyl/aryl iodides serve as a formal diradical precursor and add across C‐C triple bonds to deliver a number of functionalized cyclopentanes in moderate to high yields with exceptional regio‐...

article

Dityrosine Aggravates Hepatic Insulin Resistance in Obese Mice by Altering Gut Microbiota and the LPS/TLR4/NF‐κB Inflammatory Pathway

Yin‐Yi Ding, Jinchi Lan, Yumeng Fang, Yuxiang Pan, more

Molecular Nutrition & Food Research > 67 > 22 > n/a - n/a

Scope Dityrosine is the main product of protein oxidation, which has been proved to be a threat to human health. This study aims to investigate whether dityrosine exacerbates insulin resistance by inducing gut flora disturbance and associated inflammatory responses. Methods and results Mice fed with normal diet or high‐fat diet (HFD) received daily gavage of dityrosine (320 µg kg⁻¹ BW) or saline...

article

Construction of Difluoroalkylated Cyclopentenones through Photocatalytic Difluoroalkylative 5‐endo Cyclization Cascades of Ynones

Jingwen Su, Jinming Xu, Zhenyu Gu, Yulu Zhou, more

European Journal of Organic Chemistry > 26 > 29 > n/a - n/a

Difluoroalkyl groups and cyclopentenones are both important units in synthetic and medicinal chemistry. The difuoroalkylation coupled with a cyclopentenone formation still remains a challenge. Herein, we report a visible‐light‐induced cascade difluoroalkylative 5‐endo cyclization of ynones with difluoroalkyl bromides to access difluoroalkylated cyclopentenones, which may find wide applications for...

article

Catalyst‐ and Additive‐Free Chemoselective Transfer Hydrogenation of α‐Keto Amides to α‐Hydroxy Amides by Sodium Formate

Feiyue Hao, Zhenyu Gu, Guyue Liu, Wubing Yao, more

European Journal of Organic Chemistry > 2019 > 34 > 5985 - 5991

A catalyst‐ and additive‐free chemoselective transfer hydrogenation of α‐keto amides to α‐hydroxy amides is easily achieved by using sodium formate as a hydrogen source. The utility of this method is demonstrated by gram‐scale synthesis and transformation of the resultant α‐hydroxy amides into polysubstituted acetamides and 2‐arylindole derivatives. Control experiments suggest that the NH group of...

article

Constructing hyperchaotic attractors of conditional symmetry

Zhenyu Gu, Chunbiao Li, Herbert H. C. Iu, Fuhong Min, more

The European Physical Journal B > 2019 > 92 > 10 > 1-9

By applying the symmetry property of nonlinear function for obtaining new polarity balance, hyperchaotic systems of conditional symmetry are constructed, and coexisting hyperchaotic attractors of conditional symmetry originated from 1-D and 2-D offset boosting are captured accordingly. More interestingly, a symmetric hyperchaotic system is proven to host conditional symmetry, and consequently output...

article

Data driven webpage color design

Zhenyu Gu, Jian Lou

Computer-Aided Design > 2016 > 77 > C > 46-59

This paper presents a design framework for automatic webpage coloring regarding several fundamental design objectives: proper visual contrasts, multi-color compatibility and semantic associations. The objective functions are formulated with data-driven probabilistic models: the Color Contrast model concerning visual saliencies is trained on 52,000 basic components parsed from 500 popular webpages...

chapter

A new rotating machine diagnosis method based on Complex Signal Bilateral Spectrum and SVM

Zhenyu Gu, Diwen Jin, Jiajia Zheng, Kun Yang, more

2016 35th Chinese Control Conference (CCC) > 6593 - 6598

2016 35th Chinese Control Conference (CCC)

Aimed at solving the shortage of fault sample and enhancing the reliability of diagnosis results, this paper proposes a new diagnosis method based on the combination of Complex Signal Bilateral Spectrum (CSBS) and Support Vector Machine (SVM). SVM is a classical and effective method for fault classification of small sample, while it has difficulties in recognizing fault types, and its classification...

article

Further studies on impulsive consensus of multi-agent nonlinear systems with control gain error

Tiedong Ma, Liuyang Zhang, Zhenyu Gu

Neurocomputing > 2016 > 190 > C > 140-146

In this paper, the impulsive consensus of multi-agent nonlinear systems with control gain error is further studied. The paper indicates that the condition in Theorem 1 of the original paper (Ma et al., 2015) [1] is not correct. To correct the mistake, the new version is given, which deletes one unnecessary coefficient in the inequality condition in the paper Ma et al. (2015) [1]. Moreover, two modified...

chapter

Adaptive impulsive consensus of multi-agent systems with unknown parameters

Peng Xiao, Tiedong Ma, Fangzheng Xue, Zhenyu Gu, more

2016 Chinese Control and Decision Conference (CCDC) > 1741 - 1746

2016 Chinese Control and Decision Conference (CCDC)

The consensus problem of multi-agent nonlinear systems with or without uncertain parameters is studied in this paper. Based on the theory of impulsive differential equations, Lyapunov stability theory and algebraic graph theory, some impulsive consensus conditions are given to realize the consensus of a class of multi-agent nonlinear systems. Compared with the existing investigations of impulsive...

chapter

Large Equipment Condition Monitoring Based on Reference Power Curve Fitting by Multi-sensors Fusion

Zhenyu Gu, Jiajia Zheng, Yan He, Jun Liu

Lecture Notes in Electrical Engineering > Advances in Electrical Engineering and Electrical Machines > 85-90

For large equipment, not only itself, the workpieces are also usually large and expensive. Therefore, online monitoring plays an important role in reducing equipment downtime costs, improving reliability and protecting the production operation. In this paper, a novel condition monitoring method for large equipment based on reference power curve fitting by multi-sensors fusion is proposed. This condition...

article

Impulsive consensus of multi-agent nonlinear systems with control gain error

Tiedong Ma, Liuyang Zhang, Feiya Zhao, Zhenyu Gu, more

Neurocomputing > 2016 > 171 > C > 293-298

In this paper, the consensus problem of multi-agent nonlinear systems with control gain error is studied. Based on the theory of impulsive differential equations, Lyapunov stability theory and algebraic graph theory, some impulsive consensus conditions are given to realize the consensus of a class of multi-agent nonlinear systems. Compared with the existing investigations of impulsive consensus of...

chapter

Building Blackboard Innovation Practice Platform Based on Multimedia Literacy

Zhenyu Gu

2014 International Conference on Management of e-Commerce and e-Government > 202 - 205

2014 International Conference on Management of e-Commerce and e-Government (ICMeCG)

Considering some deficiency of college students' innovative project construction and general lack of innovation incubation platform, this paper puts forward a framework of Blackboard-based multimedia innovation practice platform. Logically, the platform contains three correlated layers: the multimedia literacy layer (foundation), incubation layer (core) and innovation practice layer (goal). From the...

article

Aqueous phase synthesis of biostabilizer capped CdS nanocrystals with bright emission

Lei Zou, Zheng Fang, Zhenyu Gu, Xinhua Zhong

Journal of Luminescence > 2009 > 129 > 5 > 536-540

In this manuscript, we present a facile approach for the synthesis of highly luminescent CdS nanocrystals (maximum quantum yield of 36%) by the reaction of Cd ²⁺ and thiourea in the presence of glutathione (GSH) as capping reagent. The influence of various experimental variables, including pH value, S-to-Cd ratio, as well as Cd-to-ligand ratio, on the growth rate and optical properties of...

chapter

A Color Harmony Measure Model with Shape Information

Quan Zhang, Chenglei Zhao, Zhenyu Gu, Xinguo Ming

2009 International Joint Conference on Computational Sciences and Optimization > 1 > 627 - 630

2009 International Joint Conference on Computational Sciences and Optimization, CSO

In the physical world a visible object has color and shape features synchronously. Numerous color harmony principles and measure models were presented on the basis of psychological experiments, typical color solids, Birkhoff's aesthetic measure, or information theory. However, none of them integrally took account of shape information in measuring color harmony. Based on Lewin's psychological field...

chapter

Customized product design scheme selection model with a focus on integration of environmental attributes

Zhenyu Gu, Fei Liu, Huajun Cao

2008 7th World Congress on Intelligent Control and Automation > 4925 - 4928

2008 7th World Congress on Intelligent Control and Automation

Green Manufacturing (GM) is an inevitable trend of the sustainable development of manufacturing enterprise. In order to reduce environmental damage and save resources Green Design (GD) is a key. Customized product design scheme selection taking into account the environmental considerations is a practical approach for reducing the resource consumption and negative environmental impacts in customized...

article

Application-Specific MPSoC Reliability Optimization

Zhenyu Gu, Changyun Zhu, Li Shang, R.P. Dick

IEEE Transactions on Very Large Scale Integration (VLSI) Systems > 2008 > 16 > 5 > 603 - 608

This paper presents modeling and estimation techniques permitting the temperature-aware optimization of application-specific multiprocessor system-on-chip (MPSoC) reliability. Technology scaling and increasing power densities make MPSoC lifetime reliability problems more severe. MPSoC reliability strongly depends on system-level MPSoC architecture, redundancy, and thermal profile during operation...

article

Three-Dimensional Chip-Multiprocessor Run-Time Thermal Management

Changyun Zhu, Zhenyu Gu, Li Shang, R.P. Dick, more

IEEE Transactions on Computer-Aided Design of Integrated Circuits and... > 2008 > 27 > 8 > 1479 - 1492

Three-dimensional integration has the potential to improve the communication latency and integration density of chip-level multiprocessors (CMPs). However, the stacked high-power density layers of 3D CMPs increase the importance and difficulty of thermal management. In this paper, we investigate the 3D CMP run-time thermal management problem and describe efficient management techniques. This paper...

article

Adsorption behavior and mechanism of D113 resin for lanthanum

Zengnian SHU, Chunhua XIONG, Qiuxian SHEN, Caiping YAO, more

Rare Metals > 2007 > 26 > 6 > 601-606

The sorption properties of macroporous weak acid resin (D113) for La ³⁺ ion were studied by chemical analysis and IR spectra. Experimental results indicate that the D113 resin has a good adsorption ability for La ³⁺ at pH = 6.0 in the HAc-NaAc medium. The statically saturated adsorption capacity is 273.3 mg/g. Separation coefficients of β _La ³⁺ /Ce ³⁺ , β _La...

article

Structural Analysis of Kinetic Folding Intermediates for a TIM Barrel Protein, Indole-3-glycerol Phosphate Synthase, by Hydrogen Exchange Mass Spectrometry and Gō Model Simulation

Zhenyu Gu, Maithreyi K. Rao, William R. Forsyth, John M. Finke, more

Journal of Molecular Biology > 2007 > 374 > 2 > 528-546

The structures of partially folded states appearing during the folding of a (βα) ₈ TIM barrel protein, the indole-3-glycerol phosphate synthase from Sulfolobus solfataricus (sIGPS), was assessed by hydrogen exchange mass spectrometry (HX-MS) and Gō model simulations. HX-MS analysis of the peptic peptides derived from the pulse-labeled product of the sub-millisecond folding reaction from the...

article

Topology and Sequence in the Folding of a TIM Barrel Protein: Global Analysis Highlights Partitioning between Transient Off-pathway and Stable On-pathway Folding Intermediates in the Complex Folding Mechanism of a (βα)8 Barrel of Unknown Function from B. subtilis

William R. Forsyth, Osman Bilsel, Zhenyu Gu, C. Robert Matthews

Journal of Molecular Biology > 2007 > 372 > 1 > 236-253

The relative contributions of chain topology and amino acid sequence in directing the folding of a (βα) ₈ TIM barrel protein of unknown function encoded by the Bacillus subtilis iolI gene (IOLI) were assessed by reversible urea denaturation and a combination of circular dichroism, fluorescence and time-resolved fluorescence anisotropy spectroscopy. The equilibrium reaction for IOLI involves,...

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INTEGRATED CIRCUIT SYNTHESIS (4)
THERMAL ANALYSIS (4)
IMPULSIVE CONTROL (3)
INTEGRATED CIRCUIT DESIGN (3)
INTEGRATED CIRCUIT RELIABILITY (3)
MULTI-AGENT SYSTEMS (3)
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CONTROL GAIN ERROR (2)
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INTEGRATED CIRCUIT PACKAGING (2)
INTEGRATED CIRCUIT POWER DENSITIES (2)
LOGIC DESIGN (2)
LYSOZYME (2)
MATHEMATICAL MODEL (2)
PHOTOCATALYSIS (2)
PROTEIN FOLDING (2)
REDUNDANCY (2)
REFOLDING (2)
RELIABILITY (2)
RUNTIME (2)
SOFTWARE PACKAGE (2)
SYSTEM-ON-CHIP (2)
TEMPERATURE (2)
THERMAL MANAGEMENT (PACKAGING) (2)
TOPOLOGY (2)
3-D INTEGRATION (1)
3D CHIP-PACKAGE (1)
3D CHIP-PACKAGE HEAT FLOW ANALYSIS (1)
5-ENDO CYCLIZATION (1)
ACADEMIC SYNTHESIS TEST CASES (1)
ADAPTIVE CONTROL (1)
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AESTHETIC MEASURE (1)
ALGORITHM DESIGN AND ANALYSIS (1)
AMYLOID (1)
APPLICATION-SPECIFIC MPSOC RELIABILITY (1)
AQUEOUS SYNTHESIS (1)
ARCHITECTURAL DESIGN (1)
ARTIFICIAL NEURAL NETWORKS (1)
BATTERY-POWERED EMBEDDED SYSTEM DESIGN (1)
BEHAVIORAL SYNTHESIS (1)
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DIFLUOROALKYLATION (1)
DIRECTED ACYCLIC PERIODIC GRAPH (1)
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DITYROSINE (1)
DYNAMIC THERMAL ANALYSIS (1)
ECONOMICAL COOLING (1)
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FAULT DIAGNOSIS (1)
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INFONA - science communication portal

Search results for: Zhenyu Gu

Photocatalytic [3+2] Cycloaddition of Alkyl/aryl Iodides and Internal Alkynes by Merging Halogen and Hydrogen Atom Transfer

Dityrosine Aggravates Hepatic Insulin Resistance in Obese Mice by Altering Gut Microbiota and the LPS/TLR4/NF‐κB Inflammatory Pathway

Construction of Difluoroalkylated Cyclopentenones through Photocatalytic Difluoroalkylative 5‐endo Cyclization Cascades of Ynones

Catalyst‐ and Additive‐Free Chemoselective Transfer Hydrogenation of α‐Keto Amides to α‐Hydroxy Amides by Sodium Formate

Constructing hyperchaotic attractors of conditional symmetry

Data driven webpage color design

A new rotating machine diagnosis method based on Complex Signal Bilateral Spectrum and SVM

Further studies on impulsive consensus of multi-agent nonlinear systems with control gain error

Adaptive impulsive consensus of multi-agent systems with unknown parameters

Large Equipment Condition Monitoring Based on Reference Power Curve Fitting by Multi-sensors Fusion

Impulsive consensus of multi-agent nonlinear systems with control gain error

Building Blackboard Innovation Practice Platform Based on Multimedia Literacy

Aqueous phase synthesis of biostabilizer capped CdS nanocrystals with bright emission

A Color Harmony Measure Model with Shape Information

Customized product design scheme selection model with a focus on integration of environmental attributes

Application-Specific MPSoC Reliability Optimization

Three-Dimensional Chip-Multiprocessor Run-Time Thermal Management

Adsorption behavior and mechanism of D113 resin for lanthanum

Structural Analysis of Kinetic Folding Intermediates for a TIM Barrel Protein, Indole-3-glycerol Phosphate Synthase, by Hydrogen Exchange Mass Spectrometry and Gō Model Simulation

Topology and Sequence in the Folding of a TIM Barrel Protein: Global Analysis Highlights Partitioning between Transient Off-pathway and Stable On-pathway Folding Intermediates in the Complex Folding Mechanism of a (βα)8 Barrel of Unknown Function from B. subtilis

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