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17篇 您的检索式:作者名="ZHENG Huifeng"
    题名 作者 年代 出处 被引量
1Gastrodin prevents steroid-induced osteonecrosis of the femoral head in rats by anti-apoptosis显示文摘Zheng Huifeng Yang Erping Peng Hao Li Jianping Chen Sen Zhou Jianlin Fang Hongsong Qiu Bo Wang Zhe 2014Chinese Medical Journal2014,,22:17
2Preferential Surface Decoration of Supported Co Catalysts with Pt for Aromatic Saturation显示文摘To explore the ideal architecture of Pt-Co bimetallic catalyst for aromatics saturation, various Pt-Co bimetallic catalysts were synthesized via the galvanic replacement, the co-impregnation, and the sequential impregnation methods, and were characterized by CO chemisorption, transmission electron microscopy(TEM), H_2-temperature-programmed reduction(H_2-TPR), H_2-temperature-programmed desorption(H_2-TPD), X-ray fluorescence(XRF) spectrometry, and inductively coupled plasma atomic emission spectroscopy(ICP-AES), while the catalysts were evaluated by the flow reactor study of toluene hydrogenation. These characterization results suggest that the surface decoration of Pt has little influence on the number of active sites located on the surfaces of the reduced Co-based catalysts, but can greatly suppress the oxidation of Co at room temperature and provide the activated hydrogen at a relatively low temperature. It is demonstrated that their chemical properties and catalytic performance are largely dependent on the location of Pt atoms in the bimetallic catalysts. The architecture of Pt-Co bimetallic catalyst consisting of Co/SiO_2 decorated with 0.3% of Pt, with the most of Pt atoms being situated on the surfaces of Co nanoparticles, is the active structure for aromatic saturation and has the maximum utilization of Pt.Zheng Renyang Zheng Peng Dong Xiao Zheng Aiguo Li Huifeng Li Mingfeng 2018China Petroleum Processing & Petrochemical Technology2018,20,1:2
3Ultralong cycle life enabled by in situ growth of CoMo_(1-x)P/Mo heterostructure for lithium-sulfur batteries显示文摘Lithium-sulfur batteries(Li-S batteries) are considered as promising new-generation electrochemical energy storage devices due to their extremely high theoretical energy density(2600 Wh kg-1) and theoretical specific capacity(1675 m Ah g^(-1)). However, numerous problems such as poor conductivity and the shuttle effect during discharge-charge process limit the practical application of lithium-sulfur batteries. In this work, porous tubular Co Mo_(1-x)P/Mo constructed by in situ growth of metal Mo was designed as the sulfur host for lithium-sulfur batteries. The introduction of Mo modulated the electronic structure of Co Mo P to improve the conductivity of cathode and facilitate the redox kinetics, as well as the Co Mo_(1-x)P/Mo heterostructure was beneficial to inhibit the shuttle effect through the interaction with lithium polysulfides, which improved cycling stability. As a result, Co Mo_(1-x)P/Mo/S cathode had a low-capacity decay rate of only 0.029% per cycle after 2000 cycles at 0.5 C. This work provided a new perspective for the further design of high-performance lithium-sulfur battery cathode materials.Donghua Guo Mengwei Yuan Xingzi Zheng Miaomiao Li Caiyun Nan Genban Sun Xianqiang Huang Huifeng Li 2022Journal of Energy Chemistry2022,31,10:2
4The structure, density and settle ability of anammox granular sludge in high-rate reactors 显示文摘Lu Huifeng Zheng Ping Ji Qixing 2012Bioresource Technology2012,123,:1
5Enzyme-conjugated hybridization chain reaction for magneto-controlled immunoassay of squamous cell carcinoma antigen with pH meter显示文摘A nanoparticle-based potentiometric immunoassay was designed for the sensitive detection of squamous cell carcinoma antigen(SCCA;cervical carcinoma marker) on a portable pH meter coupling enzyme-labeled hybridization chain reaction(HCR) with two alternating hairpin DNA probes for the signal amplification. Initially, a sandwich-type immunoreaction was carried out between anti-SCCA capture antibody-conjugated magnetic bead and detection antibody/initiator strand-coated gold nanoparticle(AuNP). Then, the HCR reaction was readily executed between two glucose oxidase(GOx)-labeled hairpins through the initiator strand to form numerous GOx concatamers on the AuNP via the long nicked double-helix. The concatenated GOx oxidized glucose into gluconic acid and hydrogen peroxide, thus resulting in the pH change of the detection solution on a handheld pH meter. Several labeling protocols including GOx-antibody, GOx-AuNP-antibody and GOx-HCR-AuNP-antibody were investigated for detection of target SCCA, and improved analytical features were obtained with the immune-HCR assay. Under optimum conditions, the immune-HCR assay exhibited good pH responses for the determination of SCCA at a concentration as low as 5.7 pg/mL. Additionally, the immune-HCR assay had good precision and reproducibility, high specificity, and acceptable accuracy for analyzing human serum specimens.Jiancui Chen Huifeng Xue Qiaoyun Chen Yao Lin Dianping Tang Jinwen Zheng 2019Chinese Chemical Letters2019,30,9:1
6Bifurcation analysis in delayed feedback Jerk systems and application of chaotic control显示文摘Zheng Baodong Zheng Huifeng 2009Chaos Solitons & Fractals2009,40,3:1
7Ultrasonic Pulse Signal Resonance Features in Layered CFRP Within Voids显示文摘The ultrasonic pulse signal resonance features in layered carbon fiber reinforced plastic(CFRP) within voids were researched. The frequency domain model of acoustic wave propagation in multilayered medium was established. Then the reflection coefficient of multilayered CFRP within voids was numerically calculated. The results are as follows. When the CFRP laminate is tested by ultrasonic whose center frequency is close to the CFRP inherent resonant frequency, the ultrasonic may generate resonance phenomenon in CFRP. If CFRP contains evenly distributed voids, the frequency of resonant signal and its amplitude all decrease with the increase of porosity. For the thick section CFRP within local concentrated voids, the local concentrated voids near testing surface will cause signal frequency reduction and the decrease of its amplitude. But the voids which exist in layers far away from testing surface almost have no influence on signal resonance. The ultrasonic pulse echo testing was conducted for thick section CFRP specimen. The analysis results of testing signals were in accordance with the results of the numerical calculation, showing that the reflection coefficient frequency response model can effectively explain the ultrasonic resonance phenomenon in layered CFRP within voids.杨辰龙 陈越超 WANG Zhe ZHENG Huifeng 2017Journal of Wuhan University of Technology(Materials Science)2017,32,3:1
8The struc- ture, density and settlability of anammox granular sludge in high-rate reactors显示文摘Lu Huifeng Zheng Ping Ji Qixing 2012Bioresouree Technolo- gy2012,,:1
9Development of VME system in RPC electronics for reactor neutrino experiment at Daya Bay Nuclear Power Plant显示文摘VME system of the Resistive Plate Chamber (RPC) electronics for the Daya Bay Reactor Neutrino Experiment is described in this paper. A 9U VME RPC trigger module (RTM) is designed to process coincidence signals coming from front end cards (FECs), to generate local triggers and send them to FECs to select the hit data from RPC detector, to report trigger information to a master trigger system and receive cross triggers from the master trigger system. Another 9U VME readout module is designed to collect data from all FECs, to send out configurations to FECs, and to transmit collected hit data to the data acquisition system via VME bus. Test results prove that the VME system is capable of treating a maximum data rate (2.2 MB·s-1 ), without data loss.HAO Huifeng LIANG Hao ZHENG Lei DOU Fei XI Jianbo ZHOU Yongzhao 2013Nuclear Science and Techniques2013,24,1:1
10Bifurcation analysis in delayed feedback Jerk systems and application of chaotic control显示文摘ZHENG Baodong ZHENG Huifeng 2009Chaos Solitons and Fractals2009,40,3:1
11Spectral Absorption Gas Sensor Based on Anti-Resonant Reflecting Optical Waveguide显示文摘空气硅石微观结构光纤维基于反反响的思考光波导(箭头) ,原则被用来发展一光谱吸收气体传感器。箭头纤维有一个空气核心和空气 cladding 层。有一段 725 公里的箭头纤维被用来构造一个察觉到的系统检测乙炔气体。气体从纤维的一结束被注入纤维。传播系列用一个光光谱分析器被收集。结果显示系统能检测不同集中的气体并且有好系统线性。系统的反应时间是大约 200 s。Haihu YU Yu ZHENG Huiyong GUO Beibei CAO Huifeng WEI 2014Photonic Sensors2014,4,2:1
12In situ decoration of CoP/Ti_(3)C_(2)Tx composite as efficient electrocatalyst for Li-oxygen battery显示文摘Application of Li-oxygen(Li-O_(2)) battery is in urgent need of bifunctional ORR/OER electrocatalyst. A surface-functionalization CoP/Ti_(3)C_(2)Txcomposite was fabricated theoretically, with the optimized electronic structure and more active electron, which is beneficial to the electrochemical reaction. The accordion shaped Ti_(3)C_(2)Txis featured with large specific surface area and outstanding electronic conductivity, which is beneficial for the adequate exposure of active sites and the deposition of Li2O2. Transition metal phosphides provide more electrocatalytic active sites and present good electrocatalytic effect. The CoP/Ti_(3)C_(2)Txcomposite served as the electrocatalyst of Li-O_(2)battery reaches a high specific discharge capacity of 17,413 m Ah/g at 100 m A/g and the lower overpotential of 1.25 V, superior to those of the CoP and Ti_(3)C_(2)Txindividually. The composite of transition metal phosphides and MXene are applied in Li-O_(2)battery, not only demonstrating higher cycling stability of the prepared CoP/Ti_(3)C_(2)Txcomposite, but pointing out the direction for their electrochemical performance improvement.Xingzi Zheng Mengwei Yuan Xianqiang Huang Huifeng Li Genban Sun 2023Chinese Chemical Letters2023,34,1:1
13Microstmcmm and fatigue properties of plasma transferred arc alloying TiC-W-Cr on gray cast iron 显示文摘Shi Kaiyuan Hu Shubing Zheng Huifeng 2011Surface and Coatings Technology2011,206,6:1
14Nucleotide Recognition by a Guanidinocalixarene Receptor in Aqueous Solution显示文摘Nucleotides participate in various physiological processes through their supramolecular interactions with biomolecules.Therefore,the molecular recognition of nucleotides became an important topic in supramolecular chemistry and exhibited many biomedical applications.Guanidinocalixarenes showed very strong binding affinities towards nucleotides,even reaching the nanomolar level.In this work,we systematically determined the binding constants between a typical guanidinocalixarene(guanidinium-modified calix[5]arene,GC5A)and various nucleotides and revealed the driving forces behind the molecular recognition using theoretical calculations.The electrostatic interactions and hydrogen bonding provided by the phosphate groups of the nucleotides dominated the binding between the nucleotides and GC5A.The lower rim alkyl chains and the skeleton of GC5A provide preorganized cavity and upper guanidinium groups.The difference in the type of nucleobase is also attributed to the different binding affinities.This work provides insight into the molecular recognition of nucleotides and facilitates the development of new supramolecular hosts for nucleotides and related biological applications.GENG Wenchao ZHENG Zhe JIANG Huifeng GUO Dongsheng 2023Chemical Research in Chinese Universities2023,39,1:0
15A restraining multipath effect method for the measurement of insertion loss of underwater acoustic materials显示文摘A method suppressing multipath effect when measuring the underwater acoustic materials in a reverberant field is proposed, which is called 'virtual end-fire array method'.To weaken the coherence of the same-frequency reflection interference of each path, signal of different phases at different positions was transmitted by a single transducer in the simulation design, and a sharp directionality in the direction of the array length was formed. All signals at the above positions were superimposed to eliminate the clutters. The insertion loss(IL) of the material was finally calculated by extracting the desired waveforms. In the measured frequency range of 3–20 k Hz, the aluminum plate with size of 1.1 m × 1.0 m × 8 mm and the round aluminum plate with 0.5 m in diameter and 8 mm in thickness were measured in a reverberant tank with size of 5.5 m × 3.5 m × 3.5 m. Results showed the measured lowest effective frequency limit can be reduced by the virtual end-fire array technique compared with the conventional method.In the measurement of round aluminum plate and rectangular aluminum plate, errors in the effective measurement band was less than 0.5 d B and the interference of the acoustic multipath propagation effects was reduced effectively. The ability of the transducer in reverberant tank to measure acoustic materials has been improved after implementing this method.SUN Min WANG Yuebing ZHENG Huifeng ZHAO Peng WU Lizhuo 2020Chinese Journal of Acoustics2020,39,2:0
16Expert Consensus on Nutritional Support for Children with Congenital Heart Disease(2023 Edition)显示文摘The second edition of the expert consensus on pediatric nutrition was formed based on a global update of pedia-tric nutrition guidelines or consensus worldwide,the management of congenital heart disease,and the results of multi-center clinical nutrition research for congenital heart disease following thefirst Chinese consensus edition of 2016.The consensus was also shaped by the results of three discussion sessions and two questionnaires con-ducted by the 13-member collaboration group.This process was informed by both clinical guidelines and expert consensus.The quality of literature,both in English and Chinese,and the level of recommendations were evaluated using the Grading of Recommendations Assessment,Development,and Evaluations(GRADE)system.Xuming Mo Wei Cai Jirong Qi Zhuoming Xu Ying Wang Weihui Yan Shoujun Li Nianguo Dong Xinxin Chen Jinfen Liu Qiang Shu Jimei Chen Haibo Zhang Hao Zhang Quansheng Xing Qi An Xiaofeng Li Xu Wang Yan He Junwu Su Taibing Fan Teng Ming Weibing Tang Li Hong Jinghao Zheng Ming Ye Guocheng Sun Yiqun Ding Liang Tao Yifeng Yang Zhongshi Wu Hua Cao Qiang Wang Keming Yang Libing Zhang Ping Wen Yanqin Cui Bo Zhai Yong Zou Qingya Tang Rui Chen Chun Wu Zhiyu Feng Caixia Liu Yaping Mi Rufang Zhang Ke Lin Xin Li Mingan Pi Xiangming Fan Shanshan Shi Peng Huang Zhengxia Pan Jiafeng Qi Renwei Chen Shuguang Tao Yaqin Shu Huifeng Zhang Lan Jiang Min Da Nishant Patel Liang Hu Cardiac Surgery Group of Pediatric Surgery Society of Chinese Medical Association and Parenteral Enteral Nutrition Society of Chinese Medical Association 2023Congenital Heart Disease2023,18,6:0
17CFRP Voids 3D Identification and Location Method Based on the Process of Backscattered Signal显示文摘The porosity of carbon fiber reinforced polymer(CFRP) workpiece is tested by ultrasonic in pulse-echo mode.When the ultrasonic frequency is close to the resonant frequency of the workpiece,the resonance will occur along the thickness direction.If the CFRP workpiece contains voids,the resonant frequency will decrease.The result of ultrasonic testing experiment clearly draws the conclusion that the center frequency of the backscattered signal spectrum declines with increasing porosity.Based on the above theory and conclusion,the three-dimensional(3D) voids identification and location method is established.Firstly,the ultrasonic signals are collected and the center frequencies of the backscattered signal spectra are calculated.Then the C-scan of center frequency is generated to identify the voids.At last the B-scan of center frequency for the region containing voids is generated to determine the depth of the voids.The experimental results show that,by using this method,the voids in the CFRP workpiece can be identified and pinpointed.陈越超 杨辰龙 ZHOU Xiaojun LI Zhao ZHENG Huifeng 2016Journal of Wuhan University of Technology(Materials Science)2016,31,1:0
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