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| 1 | On the Probability Density Function of the Real and Imaginary Parts in WFRFT Signals显示文摘Recently a Hybrid Carrier(HC) scheme based on Weighted-type Fractional Fourier Transform(WFRFT) was proposed and developed,which contains Single Carrier(SC) and Multi-Carrier(MC) synergetic transmission.The wide interest is primarily due to its appealing characteristics,such as the robust performances in different types of selective fading channels and a great deal of potential for secure communications.According to the literatures,the HC signal and SC or MC signal probability distributions are different.In particular,some benefits of this HC scheme are brought by the quasi-Gaussian distribution of WFRFT signals.However,until now researchers have only presented statistic properties through computer simulations,and the accurate expressions of signals are not derived yet.In this paper,we derive the accurate and rigorously established closed-form expressions of Probability Density Function(PDF) of WFRFT signal real and imaginary parts with a large number of QPSK subcarriers,and this PDF can describe the behavior of data modulated by WFRFT,avoiding the complex computation for extensive computer simulations.Furthermore,the components of PDF expression are described and analyzed,and it is revealed that the tendency of signal quasi-Gaussian changes with the increasingof the parameter α(α in(0,1]).To validate the analytical results,extensive simulations have been conducted,showing a very good match between the analytical results and the real situations.The contribution of this paper may be useful to deduce the closed form expressions of Bit Error Ratio(BER),the Complementary Cumulative Distribution Function(CCDF) of Peak to Average Power Ratio(PAPR),and other analytical studies which adopt the PDF. | Xiaolu Wang Lin Mei Zhenduo Wang Naitong Zhang | 2016 | China Communications2016，13，9： | 7 |
| 2 | BER analysis of STBC hybrid carrier system based on WFRFT with frequency domain equalization显示文摘The inherent characteristic of hybrid carrier(HC) scheme based on the weighted-type fractional Fourier transform(WFRFT) is revealed. The proposed linear combination of single carrier(SC) and multicarrier's(MC) characteristics is helpful to balance the conflicting requirements and achieve the comparative analysis of SC/MC. As an example, analytical SER/BER expressions of HC system with zero forcing(ZF)and minimum mean square error(MMSE) equalization are derived. In addition, the derived BER expressions are extended to multi-input systems. A unified framework of space time block code(STBC) HC scheme is proposed with two WFRFT modules at the transmitter or receiver, where STBC-SC and STBC-MC systems are the special cases of the novel structure. | Zhenduo WANG Lin MEI Xuejun SHA Naitong ZHANG | 2018 | Science China(Information Sciences)2018，61，8： | 5 |
| 3 | Photo-controlled degradation of PLGA/Ti3C2 hybrid coating on Mg-Sr alloy using near infrared light显示文摘A PLGA/Ti_(3)C_(2) hybrid coating was successfully deposited on the surface of magnesium-strontium(Mg-Sr)alloys.Compared with the corrosion current density(icorr)of the Mg-Sr alloy(7.13×10^−5 A/cm^2),the modified samples(Mg/PLGA/Ti_(3)C_(2))was lower by approximately four orders of magnitude(7.65×10^−9 A/cm^2).After near infrared 808 nm laser irradiation,the icorr of the modified samples increased to 3.48×10^−7 A/cm^2.The mechanism is that the local hyperthermia induced the free volume expansion of PLGA,and the increase in intermolecular gap enhanced the penetration of electrolytes.Meanwhile,the cytotoxicity study showed that the hybrid coating endowed the Mg-Sr alloy with enhanced biocompatibility. | Li Liu Bo Huang Xiangmei Liu Wei Yuan Yufeng Zheng Zhaoyang Li Kelvin Wai Kwok Yeung Shengli Zhu Yanqin Liang Zhenduo Cui Shuilin Wu | 2021 | Bioactive Materials2021，6，2： | 4 |
| 4 | Nano-needle strontium-substituted apatite coating enhances osteoporotic osseointegration through promoting osteogenesis and inhibiting osteoclastogenesis显示文摘Implant loosening remains a major clinical challenge for osteoporotic patients.This is because osteoclastic bone resorption rate is higher than osteoblastic bone formation rate in the case of osteoporosis,which results in poor bone repair.Strontium(Sr)has been widely accepted as an anti-osteoporosis element.In this study,we fabricated a series of apatite and Sr-substituted apatite coatings via electrochemical deposition under different acidic conditions.The results showed that Ca and Sr exhibited different mineralization behaviors.The main mineralization products for Ca were CaHPO4⋅2H2O and Ca3(PO4)2 with the structure changed from porous to spherical as the pH values increased.The main mineralization products for Sr were SrHPO4 and Sr5(PO4)3OH with the structure changed from flake to needle as the pH values increased.The in vitro experiment demonstrated that coatings fabricated at high pH condition with the presence of Sr were favorable to MSCs adhesion,spreading,proliferation,and osteogenic differentiation.In addition,Sr-substituted apatite coatings could evidently inhibit osteoclast differentiation and fusion.Moreover,the in vivo study indicated that nano-needle like Sr-substituted apatite coating could suppress osteoclastic activity,improve new bone formation,and enhance bone-implant integration.This study provided a new theoretical guidance for implant coating design and the fabricated Sr-substituted coating might have potential applications for osteoporotic patients. | Zhen Geng Luli Ji Zhaoyang Li Jing Wang Hongyan He Zhenduo Cui Xianjin Yang Changsheng Liu | 2021 | Bioactive Materials2021，6，4： | 4 |
| 5 | Hierarchical Ni_(3)S_(4)@MoS_(2)nanocomposites as efficient electrocatalysts for hydrogen evolution reaction显示文摘Hydrogen evolution reaction(HER)through water splitting is a promising way to solve the energy shortage.Noble-metal-free HER electrocatalysts with high efficiency is very important for practical applications.Herein,we prepare the Ni_(3)S_(4)@MoS_(2)electrocatalyst on carbon cloth(CC)through a two-step hydrothermal process.The Ni_(3)S_(4)nanorods are uniformly integrated with the MoS_(2)nanosheets,forming a hierarchical structure and heterogeneous interfaces.The fast electron transfer on the interface enhances the kinetics of catalytic reaction.The hierarchical structure provides more exposed active sites.The Ni_(3)S_(4)@MoS_(2)/CC exhibits good catalytic activity and long-term stability for HER.This work provided a practicable strategy to develop efficient electrocatalysts for HER in alkaline media. | Yuxi Ren Shengli Zhu Yanqin Liang Zhaoyang Li Shuilin Wu Chuntao Chang Shuiyuan Luo Zhenduo Cui | 2021 | Journal of Materials Science & Technology2021，，36： | 3 |
| 6 | The enhanced photocatalytic sterilization of MOF-Based nanohybrid for rapid and portable therapy of bacteria-infected open wounds显示文摘Open wounds are prone to infection and difficult to heal,which even threatens the life of patients because bacterial infections can induce other lethal complications without prompt treatment.The commonly used antibiotics treatment for bacterial infections has been reported to cause globally bacterial resistance and even the occurrence of superbacteria.The highly effective and antibiotic-independent therapeutic strategies are urgently needed for treating various kinds of bacteria-infected diseases.In this work,we synthesized an eco-friendly nanohybrid material(ZnDMZ)consisting of a kind of biodegradable metal organic framework(MOF,ZIF-8)combined with Zn-doped MoS_(2)(Zn-MoS_(2))nanosheets,which exhibited great ability to kill bacteria and promote the healing of bacteria-infected wounds under 660 nm light irradiation.The underlying mechanism is that besides the local hyperthermia,the nanohybrid material exhibits enhanced photocatalytic performance than single component in it,i.e.,it can also be excited by 660 nm light to produce more oxygen radical species(ROS)due to the following factors.On one hand,the Zn doping can reduce the work function and the band gap of MoS_(2),which promotes the movement of photoexcited electrons to the surface of the material.On the other hand,the combination between Zn-MoS_(2) and MOF induces the formation of a built-in electric field due to their work function difference,thus accelerating the separation of photoexcited electron-hole pairs.Because of the synergy of photocatalytic effect,photothermal effect and the released Zn ions,the synthesized ZnDMZ possessed a highly effective antibacterial efficacy of 99.9%against Staphylococcus aureus under 660 nm light irradiation for 20 min without cytotoxicity.In vivo tests showed that this nanohybrid material promoted the wound healing due to the released Zn ions.This nanohybrid will be promising for rapid and portable treatment of bacteria-infected open wounds in pathogenic bacteria contaminated environments. | Chaofeng Wang Yue Luo Xiangmei Liu Zhenduo Cui Yufeng Zheng Yanqin Liang Zhaoyang Li Shengli Zhu Jie Lei Xiaobo Feng Shuilin Wu | 2022 | Bioactive Materials2022，7，7： | 3 |
| 7 | Microstructural evolution and enhanced mechanical properties of Mg?Gd?Y?Zn?Zr alloy via centrifugal casting, ring-rolling and aging显示文摘A ring-shaped Mg?8.5 Gd?4 Y?1 Zn?0.4 Zr(wt%) alloy was manufactured via centrifugal casting and ring-rolling process. The effects of accumulative ring-rolling reduction amount on the microstructure, texture, and tensile properties of the alloy were investigated. The results indicate that the microstructure of centrifugal cast alloy consists of equiaxed grains and network-like eutectic structure present at grain boundaries. The ring-rolled alloy exhibits a characteristic bimodal microstructure composed of fine dynamic recrystallized(DRXed) grains with weak basal texture and coarse un-DRXed grains with strong basal texture, along with the presence of LPSO phase. With increasing amount of accumulative ring-rolling reduction, the coarse un-DRXed grains are refined via the formation of increasing amount of fine DRXed grains. Meanwhile, the dynamic precipitation of Mg5 RE phase occurs, generating a dispersion strengthening effect. A superior combination of strength and ductility is achieved in the ring-rolled alloy after an accumulative rolling reduction of 80%. The tensile strength of this ring-rolled alloy after peak aging is further enhanced, reaching 511 MPa, while keeping a reasonable ductility. The salient strengthening mechanisms identified include the grain boundary strengthening of fine DRXed grains, dispersion strengthening of dynamic precipitated Mg;RE phase, short fiber strengthening of LPSO lamellae/rods, and precipitation strengthening of nano-sized prismatic β precipitates and basal γ precipitates. | Zhenduo Ma Guo Li Qiang Peng Xiaodong Peng Daolun Chen HanzhuZhang Yan Yang Guobing Wei Weidong Xie | 2022 | Journal of Magnesium and Alloys2022，10，1： | 3 |
| 8 | Deposition of Bioactive Layer on NiTi Alloy by Chemical Treatment显示文摘A simple chemical method was developed for inducing bioactivity on NiTi alloys (50 at. pct by Ni/Ti). A layer of calcium phosphate was deposited on the surface to improve biocompatibility of the alloy. NiTi alloys were first etched in HNO3 aqueous solution, and then treated with boiling diluted NaOH solution. A rough surface was created and a thin TiO2 layer was formed on the surface. Pre-calcification was then introduced by immersing the treated NiTi alloys in supersaturated Na2HPO4 solution and supersaturated Ca(OH)2 solution in turn before calcification in simulated body fluid (SBF). A dense and uniform bonelike calcium phosphate (Ca-P) bioactive layer was formed on the surfaces of the specimen, which would improve their biocompatibility. Morphology and element analysis on NiTi surfaces during the treatments were investigated in detail by means of environment scanning electron microscopy (ESEM), energy dispersion X-ray spectroscopy (EDXS), and X-ray diffraction (XRD). | Ya LIU, Xianjin YANG, Minfang CHEN, Shengli ZHU and Zhenduo GUISchool of Materials Science and Engineering, Tianjin University, Tianjin 300072, China | 2002 | Journal of Materials Science & Technology2002，18，6： | 3 |
| 9 | A Z-scheme heterojunction of ZnO/CDots/C_(3)N^(4) for strengthened photoresponsive bacteria-killing and acceleration of wound healing显示文摘The abuse of antibiotics is leading to the emergence of resistant bacteria.In this work,a drug-free composite of ZnO/CDots/g-C3N4 with Z-scheme heterojunction was developed,which was employed to kill bacteria effectively within a very short time under the irradiation of visible light due to the enhanced photocatalytic and photothermal effects.In this system,the CDots acted as a bridge between g-C3N4 and ZnO,effectively inhibiting the recombination of photo-generated electrons with holes and consequently enhancing the photocatalytic properties.In addition,CDots endowed the system with excellent photothermal effects.As a result,the antibacterial efficacy of ZnO/CDots/g-C3N4 composite against S.aureus and E.coli reached up to 99.97%and 99.99%respectively,after 15 min of visible light irradiation,due to the synergistic action of photo-inspired radical oxygen species and hyperthermia.The Zn ions released from the composite promoted the growth of fibroblasts,which accelerated the wound healing process. | Yiming Xiang Qilin Zhou Zhaoyang Li Zhenduo Cui Xiangmei Liu Yanqin Liang Shengli Zhu Yufeng Zheng Kelvin Wai Kwok Yeung Shuilin Wu | 2020 | Journal of Materials Science & Technology2020，54，22： | 2 |
| 10 | Simultaneously enhancing the photocatalytic and photothermal effect of NH_(2)-MIL-125-GO-Pt ternary heterojunction for rapid therapy of bacteria-infected wounds显示文摘Infections caused by bacteria threaten human health,so how to effectively kill bacteria is an urgent problem.We therefore synthesized a NH_(2)-MIL-125-GO-Pt ternary composite heterojunction with graphene oxide(GO)and platinum(Pt)nanoparticles co-doped with metal-organic framework(NH_(2)-MIL-125)for use in photocatalytic and photothermal synergistic disinfection under white light irradiation.Due to the good conductivity of GO and the Schottky junction between Pt and MOF,the doping of GO and Pt will effectively separate and transfer the photogenerated electron-hole pairs generated by NH_(2)-MIL-125,thereby effectively improving the photocatalytic efficiency of NH_(2)-MIL-125.Meanwhile,NH_(2)-MIL-125-GO-Pt has good photothermal effect under white light irradiation.Therefore,the NH_(2)-MIL-125-GO-Pt composite can be used for effective sterilization.The antibacterial efficiency of NH_(2)-MIL-125-GO-Pt against Staphylococcus aureus and Escherichia coli were as high as 99.94%and 99.12%,respectively,within 20 min of white light irradiation.In vivo experiments showed that NH_(2)-MIL-125-GO-Pt could effectively kill bacteria and promote wound healing.This work brings new insights into the use of NH_(2)-MIL-125-based photocatalyst materials for rapid disinfection of environments with pathogenic microorganisms. | Yue Luo Bo Li Xiangmei Liu Yufeng Zheng Erjing Wang Zhaoyang Li Zhenduo Cui Yanqin Liang Shengli Zhu Shuilin Wu | 2022 | Bioactive Materials2022，7，12： | 2 |
| 11 | Ag_(3)PO_(4) decorated black urchin-like defective TiO_(2) for rapid and long-term bacteria-killing under visible light显示文摘Both phototherapy via photocatalysts and physical puncture by artificial nanostructures are promising substitutes for antibiotics when treating drug-resistant bacterial infectious diseases.However,the photodynamic therapeutic efficacy of photocatalysts is seriously restricted by the rapid recombination of photogenerated electron-hole pairs.Meanwhile,the nanostructures of physical puncture are limited to two-dimensional(2D)platforms,and they cannot be fully used yet.Thus,this research developed a synergistic system of Ag_(3)PO_(4) nanoparticles(NPs),decorated with black urchin-like defective TiO_(2)(BU-TiO_(2-X)/Ag_(3)PO_(4)).These NPs had a decreased bandgap compared to BU-TiO_(2-X),and BU-TiO_(2)-X/Ag_(3)PO_(4)(3:1)exhibited the lowest bandgap and the highest separation efficiency for photogenerated electron-hole pairs.After combination with BU-TiO_(2-X),the photostability of Ag_(3)PO_(4) improved because the oxygen vacancy of BU-TiO_(2-X) retards the reduction of Ag^(+) in Ag_(3)PO_(4) into Ag^(0),thus reducing its toxicity.In addition,the nanospikes on the surface of BU-TiO_(2-X) can,from all directions,physically puncture bacterial cells,thus assisting the hybrid’s photodynamic therapeutic effects,alongside the small amount of Ag^(+) released from Ag_(3)PO_(4).This achieves synergy,endowing the hybrid with high antibacterial efficacy of 99.76±0.15%and 99.85±0.09%against Escherichia coli and Staphylococcus aureus,respectively,after light irradiation for 20 min followed by darkness for 12 h.It is anticipated that these findings may bring new insight for developing synergistic treatment strategies against bacterial infectious diseases or pathogenic bacterial polluted environments. | Yingde Xu Xiangmei Liu Yufeng Zheng Changyi Li Kelvin Wai Kwok Yeung Zhenduo Cui Yanqin Liang Zhaoyang Li Shengli Zhu Shuilin Wu | 2021 | Bioactive Materials2021，6，6： | 2 |
| 12 | Impro-ving the bioactivity of NiTi shape memory alloy by heat and alkali treatment显示文摘 | Wei Qiang Cui Zhenduo Yang Xianjin | 2008 | Applied Surface Science2008，255，： | 1 |
| 13 | Using tea nanoclusters asβ-lactamase inhibitors to cure multidrug-resistant bacterial pneumonia:A promising therapeutic strategy by Chinese materioherbology显示文摘β-lactamase,a kind of hydrolase in multi-drug resistant pathogens,can hydrolyzeβ-lactam antibiotics and make these kinds of antibiotics invalid.Small-molecular inhibitors about the enzyme and their mechanism are widely investigated but they may result in unavoidable adverse reactions and drug-resistance.Herein,we propose a new therapeutic strategy of Chinese materioherbology,in which herbal medicine or traditional Chinese medicinal herbs can be employed as biological functional materials or refreshed/excited by means of materialogy.Nat-ural tea nanoclusters(TNCs)were extracted from tea to inhibitβ-lactamase.Different from the mechanism of small-molecular inhibitors inhibiting enzymes by binding to the corresponding active sites,the TNCs as a cap cover the protein pocket and create a spatial barrier between the active sites and antibiotics,which was named“capping-pocket”effect.TNCs were combined with amoxicillin sodium(Amo)to treat the methicillin-resistant Staphylococcus aureus(MRSA)pneumonia in mice.This combinatorial therapy remarkably outperforms antibiotic monotherapy in reducing MRSA infections and the associated inflammation in mice.The therapeutic strategy exhibited excellent biosafety,without any side effects,even in piglets.Hence,TNCs have great clinical value in potentiatingβ-lactam antibiotic activity for combatting multi-drug resistant pathogen infections and the'pocket capping'effect can guide the design of new enzyme inhibitors in near future. | Ziao Zhou Jun Li Lei Tan Xiangmei Liu Yufeng Zheng Zhenduo Cui Changyi Li Kelvin Wai Kwok Yeung Zhaoyang Li Yanqin Liang Shengli Zhu Shuilin Wu | 2022 | Fundamental Research2022，2，3： | 1 |
| 14 | Plastic Deformation Mechanism of Dual-phase Steel at Different Strain Rates显示文摘The mechanical properties of dual-phase steel (DP1000) over the strain rate range of 10^-3-10^3 s^-1 were studied using an electronic universal testing machine and a high-speed tensile testing machine.The plastic deformation mechanism was investigated from the perspectives of the strain rate sensitivity index,activation volume and dynamic factors.The results show that the tensile strength and yield strength of DP1000 increase as the strain rate increases.The elongation increases without any change after fracture,and then decreased rapidly when the strain rate reaches 103 s^-1.The true strain curves of DP1000 show three stages:the point of instability decreases in the strain range of 10^-3-10^-1 s^-1;the instability point increases between 100-5×10^2 s^-1;above 5×10^2 s^-1,and the instability strain becomes smaller again.The plastic deformation mechanism of the DP was determined by the competitive contributions of work hardening (strain hardening,strain rate hardening) and softening effects due to the adiabatic temperature rise. | 庞启航 ZHAO Zhenduo 徐梅 徐振 ZHAO Tan | 2020 | Journal of Wuhan University of Technology(Materials Science)2020，35，6： | 1 |
| 15 | Development and Research on Fracturing Technology in Low - Permeability Ultra-deep Wells in China显示文摘 | Zhenduo Wang | 2000 | SPE 644922000，，： | 1 |
| 16 | Understanding the macroscopical flexibility/fragility of nanoporous Ag:Depending on network connectivity and micro-defects显示文摘The effective engineering applications of nanoporous metals(NPMs)in flexible energy storage and wearable healthcare biosensor monitoring require its uniform ligaments network,specifically crack-free and flexible monolithic bodies.However,the macroscopic fragility of NPMs restricts their applications in wearable electronics fields.Here we focus on the synthetization of highly flexible NPMs.The effects of structural factors,e.g.ligament-network connectivity and micro-cracks on the mechanical properties of nanoporous Ag(np Ag)are investigated.The well-interconnected np Ag metal exhibits higher tensile strength,nanohardness and Vickers hardness than those for the ill-interconnected np Ag metal.The quality of the network connectivity dominates the strength and hardness of the np Ag.The flexibility/fragility is determined by the micro-crack in np Ag.The crack-free np Ag exhibits good flexible behavior.When micro-cracks are introduced,the np Ag becomes fragile.The control of soft volume shrinkage rate(Vsr)and slow surface diffusivity(Ds)effectively suppresses the crack initiation and propagation of as-formed np Ag.These results provide useful insights to synthesize more flexible and crack-free NPM materials for effective use in public wearable electronics and diverse flexible engineering applications in the future. | Chaoyang Wang Shengli Zhu Yanqin Liang Zhenduo Cui Shuilin Wu Chunling Qin Shuiyuan Luo Akihisa Inoue | 2020 | Journal of Materials Science & Technology2020，52，18： | 1 |
| 17 | Multiscale structures of Zr-based binary metallic glasses and the correlation with glass forming ability显示文摘Thermal behaviors and structures of three Zr-based binary glass formers, Zr_(50)Cu_(50), Zr_(64)Cu_(36) and Zr_(64)Ni_(36), were investigated and compared using differential scanning calorimetry(DSC), transmission electron microscopy(TEM), high energy X-ray diffraction(XRD) and small angle X-ray scattering(SAXS). The high energy XRD results show that the bulk glass former Zr_(50)Cu_(50) has a denser atomic packing efficiency and reduced mediumrange order than those of marginal glass formers Zr_(64)Cu_(36) and Zr_(64)Ni_(36). Based on TEM observations for the samples after heat treatment at 10 K above their crystallization onset temperatures, the number density of crystals for Zr_(50)Cu_(50) was estimated to be 10^(23)-10^(24) m^(-3), which was four-orders higher than that in Zr_(64)Cu_(36)and Zr_(64)Ni_(36) metallic glasses. SAXS results indicate that Zr_(50)Cu_(50) has higher degree of nanoscale inhomogeneities than those in Zr_(64)Cu_(36) and Zr_(64)Ni_(36) at as-cast state. The observed multiscale structures are discussed in terms of the phase stability and glass-forming ability of Zr-based binary glass formers. | Xuelian Wu Si Lan Zhenduo Wu Xiaoya Wei Yang Ren Ho Yin Tsang Xunli Wang | 2017 | Progress in Natural Science:Materials International2017，27，4： | 1 |
| 18 | A simple and practical choice method on GPS constellation显示文摘 | Zong Zhenduo | 1987 | Navigqtion1987，，1： | 1 |
| 19 | Effect of Pouring Temperature on Semi-solid Slurry of A356 A1 Alloy Prepared by Weak Electromagnetic Stirring显示文摘 | LIU Zheng Mao Weimin Zhao Zhenduo | 2006 | Transactions of Nonferrous Met Is Society of China2006，16，1： | 1 |
| 20 | 显示文摘 | Sang Xiaoming Yang Xianjin Cui Zhenduo | 2004 | Journal of Macromolecular Science2004，43，4： | 1 |
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