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Design,Synthesis and Structure-Activity Relationships of N-Phenylarylformamide Derivatives（PAFAs） as Non-nucleoside HIV Reverse Transcriptase Inhibitors

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Design,Synthesis and Structure-Activity Relationships of N-P...

Acoustics Based Monitoring and Diagnostics for the Progressive Deterioration of Helical Gearboxes

2011年全国药物化学学术会议——药物的源头创新

作者： xiao-Dong Ma~a,Qiu-Qin He~a,Xuan Zhang~(b,c),Shi-Qiong Yang~a,Liu-Meng Yang~b,shuang-xi gu~a, Yong-Tang Zheng~b,Fen-Er Chen~(a,d,*) a Department of Chemistry,Fudan University,Shanghai 200433,PR China b Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences & Yunnan Province,Kunming Institute of Zoology,Chinese Academy of Sciences,Kunming 650223,PR China c Graduate School of the Chinese Academy of Sciences,Beijing 100039,PR China d Institute of Biomedical Science,Fudan University,Shanghai 200031,PR China

＜正＞A series of N-phenylarylformamide derivatives（PAFAs） with anti-wild-type HIV-1 EC50 values ranging from 0.3 nM to 5.1 nM and selectivity index values ranging from 10616 to 271000 were identified as novel non-nucleoside reverse transcriptase *** them,compound 13g （EC50 = 0.30 nM,SI = 184578）,131（EC50 = 0.37 nM,SI = 212819）,13m(EC50 = 0.32 nM,SI =

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Chinese Journal of Mechanical Engineering 2021年第4期34卷 98-109页

作者： Kaibo Lu James xi gu Hongwei Fan xiuquan Sun Bing Li Fengshou gu College of Mechanical and Vehicle Engineering Taiyuan University of TechnologyTaiyuan 030024China School of Engineering University of BoltonBolton BL35ABUK College of Mechanical Engineering Xi’an University of Science and TechnologyXi’an 710054China Centre for Efficiency and Performance Engineering University of HuddersfieldHuddersfield HD13DHUK. School of Industrial Automation Beijing Institute of TechnologyZhuhai 519088China

Gearbox condition monitoring(CM)plays a significant role in ensuring the operational reliability and efficiency of a wide range of critical industrial systems such as wind turbines and *** and timely diagnosis of gear faults will improve the maintenance of gearboxes operating under sub-optimal conditions,avoid excessive energy consumption and prevent avoidable damages to *** study focuses on developing CM for a multi-stage helical gearbox using airborne *** on signal phase alignments,Modulation Signal Bispectrum(MSB)analysis allows random noise and interrupting events in sound signals to be suppressed greatly and obtains nonlinear modulation features in association with gear *** coherence is evaluated for selecting the reliable bi-spectral peaks for indication of gear deterioration.A run-to-failure test of two industrial gearboxes was tested under various loading *** omnidirectional microphones were fixed near the gearboxes to sense acoustic information during *** has been shown that compared against vibration based CM,acoustics can perceive the responses of vibration in a larger areas and contains more comprehensive and stable information related to gear dynamics variation due to ***,the MSB magnitude peaks at the first three harmonic components of gear mesh and rotation components are demonstrated to be sufficient in characterizing the gradual deterioration of gear ***,the combining of MSB peaks with baseline normalization yields more accurate monitoring trends and diagnostics,allowing the gradual deterioration process and gear wear location to be represented more consistently.

关键词： Acoustics Modulation Signal Bispectrum Helical gearbox Gear wear

Interface engineering and heterometal doping Mo-NiS/Ni(OH)_(2)for overall water splitting

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Nano Research 2021年第10期14卷 3466-3473页

作者： Hua Zhang Baojuan xi Yu gu Weihua Chen Shenglin xiong Key Laboratory of Colloid and Interface Chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringState Key Laboratory of Crystal MaterialsShandong UniversityJinan 250100China Key Laboratory of Material Processing and Mold of Ministry of Education Zhengzhou UniversityZhengzhou 450001China

Developing cost-effective,efficient and bifunctional electrocatalysts is vital for both hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)*** catalytic activity of electrocatalysts could be optimized by reasonable electronic structure regulation and increasing active ***,we report the design and fabrication of Mo-doped nickel sulfide/hydroxide heterostructures(Mo-NiS/Ni(OH)_(2))as a multisite water splitting catalyst via straightforward solvothermal and in-situ growth *** on foreign metal doping and interface interaction,the electronic conductivity of heterostructures is improved and the charge transfer kinetics across the interface is promoted,which are demonstrated by the theoretical ***-NiS/Ni(OH)_(2)electrocatalyst is endowed with high electrocatalytic performance for water splitting and remarkable durability in alkaline *** exhibits the low overpotential of 186 and 74 mV at 10 mA·cm^(-2)for OER and HER,***,after continuously working for 50 h,the current densities of HER and OER both show negligible ***,the resulting Mo-NiS/Ni(OH)_(2)better catalyzes water splitting,yielding a current density of 10 mA·cm^(-2)at a cell voltage of 1.5 V and outperforming Pt/C-IrO2 couple(1.53 V).This result demonstrates that transition metal doping and heterogeneous interface engineering are useful means for conventional catalyst design.

关键词： heterostructure doping bifunctional catalyst overall water splitting

Highly Thermally Conductive Polydimethylsiloxane Composites with Controllable 3D GO@f-CNTs Networks via Self-sacrificing Template Method

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Chinese Journal of Polymer Science 2024年第7期42卷 897-906,I0005页

作者： shuang-shuang Wang Dian-Ying Feng Zhi-Ming Zhang xia Liu Kun-Peng Ruan Yong-Qiang guo Jun-Wei gu Shaanxi Key Laboratory of Macromolecular Science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an710072China Shandong Institute of Nonmetallic Materials Jinan250031China Queen Mary University of London Engineering School Northwestern Polytechnical UniversityXi’an710072China

Constructing controllable thermal conduction networks is the key to efficiently improve thermal conductivities of polymer *** this work,graphite oxide(GO)and functionalized carbon nanotubes(f-CNTs)are combined to prepare“Line-Plane”-like hetero-structured thermally conductive GO@f-CNTs fillers,which are then performed to construct controllable 3D GO@f-CNTs thermal conduction networks via selfsacrificing template method based on oxalic ***,thermally conductive GO@f-CNTs/polydimethylsiloxane(PDMS)composites are fabricated via casting *** the size of oxalic acid is 0.24 mm and the volume fraction of GO@f-CNTs is 60 vol%,GO@f-CNTs/PDMS composites present the optimal thermal conductivity coefficient(λ,4.00 W·m^(-1)·K^(-1)),about 20 times that of theλof neat PDMS(0.20 W·m^(-1)·K^(-1)),also much higher than theλ(2.44 W·m^(-1)·K^(-1))of GO/f-CNTs/PDMS composites with the same amount of randomly dispersed ***,the obtained GO@f-CNTs/PDMS composites have excellent thermal stability,whoseλdeviation is only about 3%after 500 thermal cycles(20-200℃).

关键词： Polydimethylsiloxane Hetero-structured thermally conductive fillers Self-sacrificing template Thermal conduction networks

Changes of tear film and tear secretion after phacoemulsification in diabetic patients

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2008年第4期9卷 324-328页

作者： xi LIU Yang-shun gu Ye-sheng XU Ophthalmology Center the First Affiliated Hospital School of Medicine Zhejiang University Hangzhou 310003 China

Objective: To evaluate tear film stability and tear secretion in patients with diabetes after phacoemulsification. Methods: Twenty-five diabetic cataract patients and 20 age-matched non-diabetic cataract patients as control underwent pha- coemulsification. Tear film break-up time (TFBUT), Schirmer I test (SIT), corneal fluorescein staining, and dry eye symptoms were measured pre- and postoperatively. Results: Diabetics had a decreased preoperative TFBUT and SIT. TFBUT was reduced on Day 1 and recovered on Day 180 postoperatively in both groups. SIT was increased after phacoemulsification, but returned to preoperative levels by Day 180 in non-diabetics, whereas it was lower than preoperative level in diabetics. Positive corneal fluo- rescein staining was elevated in both groups, and returned to preoperative levels only in controls. Dry eye symptoms were similar to fluorescein staining in both groups. Conclusion: Tear secretion was reduced in diabetic cataract patients after phacoe- mulsification, which worsened dry eye symptoms and predisposed those patients to ocular damage.

关键词： Phacoemulsification Diabetes Cataract Tear

Electromagnetic properties of BaZn_2Fe_(16)O_(27)/antimony-doped tin oxide composite absorbing materials by co-precipitation method

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Rare Metals 2014年第6期33卷 697-702页

作者： Jing Zhang Li-xi Wang xiao-gu Huang Qi-Tu Zhang College of Materials Science and Engineering Nanjing University of Technology

W-type barium ferrite（Ba Zn2Fe16O27）/antimony-doped tin oxide（ATO） composite absorbing materials were synthesized by co-precipitation method, using Ba Zn2Fe16O27 prepared by traditional solid method and SnCl4·5H2O, SbCl3 as main raw materials. The structure and morphology of the composites were characterized using X-ray diffraction（XRD）, scanning electron microscopy（SEM）. The result shows that Ba Zn2Fe16O27/ATO composites were obtained by co-precipitation method, and ATO nano-particles were coated on the surface of Ba Zn2Fe16O27 ferrite. The complex permittivity and complex permeability of Ba Zn2Fe16O27/ATO composite absorbing materials at the frequency range from 2 to 18 GHz were analyzed by vector network analyzer. It is indicated that ATO has strong dielectric property and ferrite shows superior magnetic performance. The result shows that the complex permittivity and dielectric loss of the Ba Zn2Fe16O27/ATO composite absorbing materials are higher than the pure ferrite, and the complex permeability and magnetic loss are higher than the pure ferrite and the pure ATO. When the mole ratio of Ba Zn2Fe16O27/ATO is 1：2, the minimum reflection loss is about-31.14 d B at 12.4 GHz, moreover, the absorption bandwidth reaches 9.6 GHz when RL is-10 d B in the measured frequency range of Ku-band.

关键词： Ferrite ATO Composite Electromagnetic properties

Corrosion Behavior of Selective Laser Melted AISi10Mg Alloy in NaCl Solution and Its Dependence on Heat Treatment

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Acta Metallurgica Sinica(English Letters) 2020年第3期33卷 327-337页

作者： xin-Hui gu Jun-xi Zhang xiao-Lei Fan Lai-Chang Zhang Shanghai Key Laboratory of Material Protection and Advanced Material in Electric Power Shanghai University of Electric PowerShanghai 200090China School of Engineering Edith Cowan University270 Joondalup DriveJoondalupPerthWA 6027Australia

This work investigates the corrosion behavior of AlSilOMg alloy produced by selective laser melting(SLM) and the counterparts heat-treated at 450-550℃in 3.5 wt% NaCl *** measurements and weight loss tests together with microstructural characterizations were *** SLM-produced alloy displays a microstructure with a continuous network of Si particles,exhibiting superior corrosion *** heat treatment,the Si particles are coarsened and isolated and A1 matrix dissolves into their surrounding area,thereby degrading the corrosion resistance ***,the corrosion resistance of AlSilOMg alloy degrades with increasing the heat treatment temperature.

关键词： Aluminum Selective laser melting XRD Electrochemistry Pitting corrosion

Flexible and Robust Functionalized Boron Nitride/Poly(p‑Phenylene Benzobisoxazole)Nanocomposite Paper with High Thermal Conductivity and Outstanding Electrical Insulation

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Nano-Micro Letters 2024年第2期16卷 423-437页

作者： Lin Tang Kunpeng Ruan xi Liu Yusheng Tang Yali Zhang Junwei gu Chongqing Key Laboratory of Green Synthesis and Applications College of ChemistryChongqing Normal UniversityChongqing 401331People’s Republic of China Shaanxi Key Laboratory of Macromolecular Science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China

With the rapid development of 5G information technology,thermal conductivity/dissipation problems of highly integrated electronic devices and electrical equipment are becoming *** this work,“high-temperature solid-phase&diazonium salt decomposition”method is carried out to prepare benzidine-functionalized boron nitride(m-BN).Subsequently,m-BN/poly(pphenylene benzobisoxazole)nanofiber(PNF)nanocomposite paper with nacremimetic layered structures is prepared via sol–gel film transformation *** obtained m-BN/PNF nanocomposite paper with 50 wt%m-BN presents excellent thermal conductivity,incredible electrical insulation,outstanding mechanical properties and thermal stability,due to the construction of extensive hydrogen bonds andπ–πinteractions between m-BN and PNF,and stable nacre-mimetic layered ***λ∥andλ_(⊥)are 9.68 and 0.84 W m^(-1)K^(-1),and the volume resistivity and breakdown strength are as high as 2.3×10^(15)Ωcm and 324.2 kV mm^(-1),***,it also presents extremely high tensile strength of 193.6 MPa and thermal decomposition temperature of 640°C,showing a broad application prospect in high-end thermal management fields such as electronic devices and electrical equipment.

关键词： Poly(p-phenylene-2,6-benzobisoxazole)nanofiber Boron nitride Thermal conductivity Electrical insulation

Inverted decoupling and LMI-based controller design for a turboprop engine with actuator dynamics

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Chinese Journal of Aeronautics 2020年第6期33卷 1774-1787页

作者： Huairong CHEN xi WANG Haonan WANG Nannan gu Meiyin ZHU Shubo YANG School of Energy and Pow er Engineering Beihang UniversityBeijing 100083China Collaborative Innovation Center for Advanced Aero-Engine Beijing 100083China

The main objective of the turboprop engine control system is to ensure propeller absorbed power at a constant propeller speed by controlling fuel flow and blade angle. Since each input variable affects the selected output variables, there exist strong interactions between different control loops of a Two-Spool Turbo Prop Engine(TSTPE). Inverted decoupling is used to decouple the interactions and decompose the TSTPE into two independent single-input single-output systems. The multi-variable PI controller and two single-variable PI controllers are designed for the TSTPE with actuator dynamics based on Linear Matrix Inequality(LMI), respectively, which is derived from static output feedback and pole placement condition. The step responses show that due to the difference in the response times of the selected output variables, it is difficult to design an appropriate multi-variable PI controller. The designed single-variable PI controllers are tested on the TSTPE integrated model to illustrate the effectiveness of the proposed method, that is,the interactions are first decoupled and then the controllers are designed, and the resulting simulated responses show that compared with the controller designed without actuator dynamics, the gas-generator shaft speed and power turbine shaft speed can better track their respective commands under the action of the controller designed with actuator dynamics.

关键词： Actuator dynamics Inverted decoupling Linear Matrix Inequality(LMI) Static output feedback Turboprop engines