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| 1 | Seasonal vertical crustal mo-tions in China detected by GPS显示文摘By analyzing daily continuous data of Chinese Global Positioning System (GPS) fiducial network with 25 sites from 1999 to 2001, seasonal altitude variations with amplitude of 3-10 mm are detected. Most part of the variations can be explained by the seasonal vertical crustal movements caused by atmospheric pressure variation and mass loading redistribution of non-tidal ocean loading, snow, and soil moisture. Nevertheless, there exists a systematic discrepancy between GPS deduced result and the counterpart predicted by combining various geophysical sources. Much longer time series of GPS site coordinates and further studies are still needed to give out a reasonable interpretation for this discrepancy. | ZHANG Feipeng DONG Danan CHENG Zongyi CHENG Mingkang HUANG Cheng | 2002 | Chinese Science Bulletin2002,47,21: | 11 |
| 2 | On higher-dimensional contrast structure of singularly perturbed Dirichlet problem显示文摘In this paper,we address the existence and asymptotic analysis of higher-dimensional contrast structure of singularly perturbed Dirichlet problem.Based on the existence,an asymptotical analysis of a steplike contrast structure (i.e.,an internal transition layer solution) is studied by the boundary function method via a proposed smooth connection.In the framework of this paper,we propose a first integral condition,under which the existence of a heteroclinic orbit connecting two equilibrium points is ensured in a higher-dimensional fast phase space.Then,the step-like contrast structure is constructed,and the internal transition time is determined.Meanwhile,the uniformly valid asymptotical expansion of such an available step-like contrast structure is obtained.Finally,an example is presented to illustrate the result. | NI MingKang WANG ZhiMing | 2012 | Science China Mathematics2012,55,3: | 4 |
| 3 | 3D fully-enclosed triboelectric nanogenerator with bionic fish-like structure for harvesting hydrokinetic energy显示文摘The hydrokinetic energy of river current,as one of the essential and widespread renewable energies,is difficult to be harvested in low flow velocity and shallow water areas.In this work,a three-dimensional(3D)fully-enclosed triboelectric nanogenerator(FETENG)with bionic fish-like structure for harvesting hydrokinetic energy is reported,which is comprised of the triboelectric powergeneration unit,bionic fish-like structure and connection unit.Through the bionic structure,the FE-TENG realizes zero head power generation in shallow water with low flow velocity.What’s more,the effect of external excitations and bionic structures on the electrical performance are systematically studied in this work.The FE-TENG can generate peak power density of 7 and 0.36 W/m^(3)respectively under the simulated swing state with frequency of 1.25 Hz and simulated river current with flow velocity of 0.81 m/s.In practical applications,due to the 3D fully-enclosed design,the FE-TENG immersed in water for 35 days demonstrates excellent immersion durability with undiminished electrical performance.Therefore,the work proposes an efficient method realizing zero head power generation,and provides a good candidate for long-term service in the river current. | Zhaoxu Jing Jiacheng Zhang Jianlong Wang Mingkang Zhu Xinxian Wang Tinghai Cheng Jianyang Zhu Zhong Lin Wang | 2022 | Nano Research2022,15,6: | 3 |
| 4 | Digital fixed-frequency hysteresis current control of a BLDC motor applied for aerospace electrically powered actuators显示文摘In the conventional cascade control structure of aerospace electrically powered actuators, the current(or electromagnetic torque) loop plays a critical role in realizing a rapid response for a digitally controlled Brush Less Direct Current(BLDC) motor. Hysteresis Current Control(HCC) is an effective method in improving the performance of current control for a BLDC motor.Nevertheless, the varying modulating frequency in the traditional HCC causes severe problems on the safety of power devices and the electromagnetic compatibility design. A triangular carrier-based fixed-frequency HCC strategy is expanded by relaxing the constraints on the rising and descending rates of the winding current to advance the capability of HCC to realize fixed-frequency modulation in the steady state. Based on that, a new flexible-bound-size quasi-fixed-frequency HCC is proposed, and the range feasible to realize fixed-frequency modulation control can cover the entire running process in the steady state. Meanwhile, a corresponding digital control strategy is designed,and four digitalization rules are proposed to extend the capacity to achieve fixed-frequency modulation control to the unsteady working state, that is, a novel fixed-frequency modulation is realized.Simulation and experimental results prove the effectiveness of this improved fixed-frequency HCC strategy. | Jian FU Yongling FU Liming YU Jianwen GUO Rongrong YANG Mingkang WANG | 2018 | Chinese Journal of Aeronautics2018,31,6: | 3 |
| 5 | STEP-LIKE CONTRAST STRUCTURE OF SINGULARLY PERTURBED OPTIMAL CONTROL PROBLEM*显示文摘为不可思议地使不安的最佳的控制问题的一个类的像步的对比结构的存在被对比结构理论介绍。借助于边界函数方法的直接计划,我们为不可思议地使不安的最佳的控制问题构造一致地有效的 asymptotic 解决方案。作为应用,一个例子被给在这篇论文说明主要结果。 | Mingkang Ni Limeng Wu | 2012 | Journal of Computational Mathematics2012,30,1: | 2 |
| 6 | Core clock component MtLUX controls shoot architecture through repression of MtTB1/MtTCP1A in Medicago truncatula显示文摘Plants are capable of regulating their shoot architecture in response to diverse internal and external environments.The circadian clock is an adaptive mechanism that integrates information from internal and ambient conditions to help plants cope with recurring environmental fluctuations.Despite the current understanding of plant circadian clock and genetic framework underlying plant shoot architecture,the intricate connection between these two adaptive mechanisms remains largely unclear.In this study,we elucidated how the core clock gene LUX ARRHYTHMO(LUX)regulates shoot architecture in the model legume plant Medicago truncatula.We show that mtlux mutant displays increased main stem height,reduced lateral shoot length,and decreased the number of lateral branches and biomass yield.Gene expression analysis revealed that Mt LUX regulated shoot architecture by repressing the expression of strigolactone receptor MtD14 and MtTB1/MtTCP1A,a TCP gene that functions centrally in modulating shoot architecture.In vivo and in vitro experiments showed that Mt LUX directly binds to a cis-element in the promoter of MtTB1/MtTCP1A,suggesting that Mt LUX regulates branching by rhythmically suppressing MtTB1/MtTCP1A.This work demonstrates the regulatory effect of the circadian clock on shoot architecture,offering a new understanding underlying the genetic basis towards the flexibility of plant shoot architecture. | Liping Wang Anqi Zhou Lulu Wang Jing Li Mingkang Yang Tingting Duan Jian Jin Liang Chen Liangfa Ge Wei Huang | 2023 | The Crop Journal2023,11,3: | 2 |
| 7 | Circadian rhythms driving a fast-paced root clock implicate species-specific regulation in Medicago truncatula显示文摘Plants have a hierarchical circadian structure comprising multiple tissue-specific oscillators that operate at different speeds and regulate the expression of distinct sets of genes in different organs.However,the identity of the genes differentially regulated by the circadian clock in different organs,such as roots,and how their oscillations create functional specialization remain unclear.Here,we profiled the diurnal and circadian landscapes of the shoots and roots of Medicago truncatula and identified the conserved regulatory sequences contributing to transcriptome oscillations in each organ.We found that the light-dark cycles strongly affect the global transcriptome oscillation in roots,and many clock genes oscillate only in shoots.Moreover,many key genes involved in nitrogen fixation are regulated by circadian rhythms.Surprisingly,the root clock runs faster than the shoot clock,which is contrary to the hierarchical circadian structure showing a slow-paced root clock in both detached and intact Arabidopsis thaliana(L.)Heynh.roots.Our result provides important clues about the species-specific circadian regulatory mechanism,which is often overlooked,and possibly coordinates the timing between shoots and roots independent of the current prevailing model. | Liping Wang Anqi Zhou Jing Li Mingkang Yang Fan Bu Liangfa Ge Liang Chen Wei Huang | 2021 | Journal of Integrative Plant Biology2021,63,8: | 2 |
| 8 | Innovative Design and Additive Manufacturing of Regenerative Cooling Thermal Protection System Based on the Triply Periodic Minimal Surface Porous Structure显示文摘The new regenerative cooling thermal protection system exhibits the multifunctional characteristics of load-carrying and heat exchange cooling,which are fundamental for the lightweight design and thermal protection of hypersonic vehicles.Triply periodic minimal surface(TPMS)is especially suitable for the structural design of the internal cavity of regenerative cooling structures owing to its excellent structural characteristics.In this study,test pieces were manufactured using Ti6Al4V lightweight material.We designed three types of porous test pieces,and the interior was filled with a TPMS lattice(Gyroid,Primitive,I-WP)with a porosity of 30%.All porous test pieces were manufactured via selective laser melting technology.A combination of experiments and finite element simulations were performed to study the selection of the internal cavity structure of the regenerative cooling thermal protection system.Hence,the relationship between the geometry and mechanical properties of a unit cell is established,and the deformation mechanism of the porous unit cell is clarified.Among the three types of porous test pieces,the weight of the test piece filled with the Gyroid unit cell was reduced by 8.21%,the average tensile strength was reduced by 17.7%compared to the solid test piece,while the average tensile strength of the Primitive and I-WP porous test pieces were decreased by 30.5%and 33.3%,respectively.Compared with the other two types of unit cells,Gyroid exhibited better mechanical conductivity characteristics.Its deformation process was characterised by stretching,shearing,and twisting,while the Primitive and I-WP unit cells underwent tensile deformation and tensile and shear deformation,respectively.The finite element predictions in the study agree well with the experimental results.The results can provide a basis for the design of regenerative cooling thermal protection system. | Xinglong Wang Cheng Wang Xin Zhou Mingkang Zhang Peiyu Zhang Lei Wang | 2020 | Computer Modeling in Engineering & Sciences2020,,5: | 2 |
| 9 | Testing the role of genetic factors across multiple independent invasions of the shrub Scotch broom (Cytisus scoparius)显示文摘 | MINGKANG YVONNE M.BUCKLEY ANDREW J.LOWE | 2007 | Molecular Ecology2007,,22: | 1 |
| 10 | Research on ge- ometry relationship of pinrack gearing显示文摘 | Feng Zhanhui Gou Mingkang Wu Shao | 2011 | Applied Me- chanics and Materials2011,,86: | 1 |
| 11 | Hermundstad, Time-domain simulation of wave-induced nonlinear motions and loads and its applications in ship design显示文摘 | MingKang Wu Ole A | 2002 | Marine Structures2002,15,6: | 1 |
| 12 | Progress and challenges of prelithiation technology for lithium-ion battery显示文摘Prelithiation technology is widely considered a feasible route to raise the energy density and elongate the cycle life of lithium-ion batteries.The principle of prelithiation is to introduce extra active Li ions in the battery so that the lithium loss during the first charge and long-term cycling can be compensated.Such an effect does not need to change the major electrode material or battery structure and is compatible with the majority of current lithium-ion battery production lines.At this stage,various prelithiation methods have been reported,some of which are already in the pilot-scale production stage.But there is still no definitive development roadmap for prelithiation.In this review,we first introduce the influence of prelithiation on electrochemical performance from a theoretical point of view and then compare the pros and cons of different prelithiation methods in different battery manufacturing stages.Finally,we discuss the challenges and future development trends of prelithiation.We aim to build up a bridge between academic research and industrial application.Some engineering problems in the promotion of prelithiation technique are extensively discussed,including not only the implementation of prelithiation but also some collateral issues on battery designing and management. | Zhenyu Huang Zhe Deng Yun Zhong Mingkang Xu Sida Li Xueting Liu Yu Zhou Kai Huang Yue Shen Yunhui Huang | 2022 | Carbon Energy2022,4,6: | 1 |
| 13 | Development of a trans-admittance mammography (TAM) using 60 × 60 electrode array 显示文摘 | Zhao Mingkang Liu Qin Oh T I | 2010 | Journal of Physics: Confer- ence Series2010,224,01: | 1 |
| 14 | Studies on nanofiltration membrane formed by diisocyanate cross- linking of quaternized chitosan on poly(acrylonitrile) (PAN) support 显示文摘 | Huang Ruihua Chen Guohua Sun Mingkang | 2006 | Journal of Membrane Science2006,286,12: | 1 |
| 15 | Time-domain simulation of wave-induced nonlinear motions and loads and its applications in ship design显示文摘 | HERMUNDSTAD O A | 2002 | Marine Structures2002,15,6: | 1 |
| 16 | Reinforced concrete beams strengthened with carbon fiber reinforced polymer by friction hybrid bond technique: Experimental investigation 显示文摘 | ZHOU Yinzhi GOU Mingkang ZHANG Fengyu | 2013 | Material and Design2013,50,: | 1 |
| 17 | Classification of protein domains based on their three-dimensional shapes (CPD3DS)显示文摘Protein design has become a powerful method to expand the number of natural proteins and design customized proteins according to demands.Domain-based protein design spares the need to create novel elements from scratch,which makes it a more efficient strategy than scratch-based protein design in designing multi-domain proteins,protein complexes and biomaterials.As the surface shape plays a central role in domain-domain and protein-protein interactions,a global map of the surface shapes of all domains should be very beneficial for domain-based protein design.Therefore,in this study,we characterized the surface shapes of protein domains,collected from CATH and SCOP databases,with their 3D-Zernike descriptors(3DZDs).Then similarities of domain shape features were identified,and all domains were classified accordingly.The preferences of the combinations of domains between different clusters were analyzed in natural proteins from the Protein Data Bank.A user-friendly website,termed CPD3DS,was also developed for storage,retrieval,analyses and visualization of our results.This work not only provides an overall view of protein domain shapes by showing their variety and similarities,but also opens up a new avenue to understand the properties of protein structural domains,and design principles of protein architectures. | Zhaochang Yang Mingkang Liu Bin Wang Beibei Wang | 2021 | Synthetic and Systems Biotechnology2021,6,3: | 1 |
| 18 | Overcoming thermo-optical dynamics in broadband nanophotonic sensing显示文摘Advances in integrated photonics open up exciting opportunities for batch-fabricated optical sensors using high-quality-factor nanophotonic cavities to achieve ultrahigh sensitivities and bandwidths.The sensitivity improves with increasing optical power;however,localized absorption and heating within a micrometer-scale mode volume prominently distorts the cavity resonances and strongly couples the sensor response to thermal dynamics,limiting the sensitivity and hindering the measurement of broadband time-dependent signals.Here,we derive a frequency-dependent photonic sensor transfer function that accounts for thermo-optical dynamics and quantitatively describes the measured broadband optomechanical signal from an integrated photonic atomic force microscopy nanomechanical probe.Using this transfer function,the probe can be operated in the high optical power,strongly thermo-optically nonlinear regime,accurately measuring low-and intermediate-frequency components of a dynamic signal while reaching a sensitivity of 0.7fm/Hz^(1/2) at high frequencies,an improvement of=10x relative to the best performance in the linear regime.Counterintuitively,we discover that a higher transduction gain and sensitivity are achieved with lower quality-factor optical modes for low signal frequencies.Not limited to optomechanical transducers,the derived transfer function is generally valid for describing the small-signal dynamic responses of a broad range of technologically important photonic sensors subject to the thermo-optical effect. | Mingkang Wang Diego J.Perez-Morelo Vladimir Aksyuk | 2021 | Microsystems & Nanoengineering2021,7,4: | 1 |
| 19 | Numerical prediction of wave-induced long-term extreme load effects in a flexible high-speed pentamaran显示文摘 | Wu MingKang Moan T | 2006 | Journal of Marine Science and Technology2006,11,: | 1 |
| 20 | A growing captive population erodes the wild Red-crowned Cranes(Grus japonensis) in China显示文摘Background: The Red-crowned Crane(Grus japonensis) is an endangered bird species and while the wild population continues to decrease in China, the captive population has dramatically increased over the last two decades. We hypothesized that some of the captive Red-crowned Cranes originated from the wild and that a growing captive population is eroding the wild population in China.Methods: We surveyed the size of the population and determined the average annual growth rate, reproductive success rate and mortality rate of captive Red-crowned Cranes in 2013 in China. We assessed this erosion effect through mathematical models, in which the size of the captive Red-crowned Crane population was determined from the annual growth rate, the reproductive success rate and the rate of mortality.Results: We found there were a total of 1520 captive Red-crowned Cranes in 2013 in China, with an average annual gro-wth rate of 7.46%, a reproductive success rate of 9.17% and a mortality rate of 3.6%. We found that approximately 1027 supplementary Red-crowned Cranes per year and a total of 244, over the 14 year period from 1999 to 2013, were needed to account for the growing captive population in China.Conclusion: We conclude that the 244 birds probably came from the wild by taking eggs and capturing juveniles or adults and hence accepted the hypothesis. Perhaps more surprisingly, our annual estimate of the number of supplementary Red-crowned Cranes in captive populations is very conservative, with the erosion effect substantially underestimated, because the total number of captive Red-crowned Cranes in 2013 was underestimated, with the annual reproductive success rate in zoos overestimated. The existence of an erosion effect provides a new perspective for the interpretation of why the Red-crowned Crane population in the wild continues to decrease. In our opinion, it is important to understand the consequences of this erosion effect on the management and conservation of this endangered bird species in China. | Daqing Zhou Xin Xia Wanggu Xu Haonan Zhang Zhedong Qian Jun Gao Zhi Wang Mingkang Jiang | 2016 | Chinese Birds2016,,4: | 1 |