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| 1 | Morphology and contact mechanics influence adhesive characteristics of Dung Beetle's bristle and Gecko's setae显示文摘Geckos(Gekko gecko)use their hairy setae to adhere on various solid surfaces and dung beetles(Copris ochus Motschulsky)use their hairy bristles to anti-adhere in sticky environments.We study why two hairy systems express a conflict in functions by using SEM,histological approaches and functional experiments.Adhesion models and various parameters were collected and analyzed.Based on the morphological data and functional experimental results carried out by natural and denatured gecko setae and beetle bristles,we first demonstrated that the stiffness along the hair is 1000 to 30000 times that perpendicular to the hair.This stiffness difference is the key factor leading to the two hairy systems' functional differences.Slope of gecko setae reduces contact stiffness,increases contact points and real contact area that results in amazing adhesive abilities.On the other hand,stiff bristles in a beetle have higher contact stiffness,which reduces the real contact area and decreases the adhesion between two contact surfaces.Deformation of gecko setae destroys the hierarchical structure,increases the contact stiffness and results in a decrease of adhesion forces.Similarly,deformation of beetle bristles destroys the erect structure of the hair,interconnects the separated bristles and thus decreases the anti-adhesive functions.These observations inspire us in designing anti-adhesive and adhesive biomimetic | Dai Zhendong Sun Jiurong Yue David Guo Ce Cheng Hong Yu Min Ji Aihong | 2007 | Progress in Natural Science:Materials International2007，17，9： | 8 |
| 2 | Numerical study on dynamic mechanism of brain volume and shear deformation under blast loading显示文摘Blast-induced traumatic brain injury(b-TBI)is a kind of significant injury to soldiers in the current military conflicts.However,the mechanism of b-TBI has not been well understood,and even there are some contradictory conclusions.It is crucial to reveal the dynamic mechanism of brain volume and shear deformations under blast loading for better understanding of b-TBI.In this paper,the numerical simulation method is adopted to carry out comprehensive and in-depth researches on this issue for the first time.Based on the coupled Eulerian-Lagrangian method,the fluid-structure coupling model of the blast wave and human head is developed to simulate two situations,namely the head subjected to the frontal and lateral impacts.The simulation results are analyzed to obtain the underlying dynamic mechanisms of brain deformation.The brain volume deformation is dominated by the local bending vibration of the skull,and the corresponding frequency for the forehead skull under the frontal impact and the lateral skull faced to the lateral impact is as high as 8 kHz and 5 kHz,respectively.This leads to the high-frequency fluctuation of brain pressure and the large pressure gradient along the skull,totally different from the dynamic response of brain under head collisions.While the brain shear deformation mainly depends on the relative tangential displacement between the skull and brain and the anatomical structure of inner skull,being not related to the brain pressure and its gradient.By further comparing the medical statistics,it is inferred that diffuse axonal injury and brain contusion,the two most common types of b-TBI,are mainly attributed to brain shear deformations.And the von Mises stress can be adopted as the indicator for these two brain injuries.This study can provide theoretical guidance for the diagnosis of b-TBI and the development of protective equipment. | Zhijie Li Zhibo Du Xiaochuan You Zhanli Liu Jian Cheng Chengcheng Luo Dongyang Chu Shaowu Ning Yue Kang Ce Yang Zhuo Zhuang | 2019 | Acta Mechanica Sinica2019，35，5： | 3 |
| 3 | Effect of Hydrostatic Pressure on LPSO Kinking and Microstructure Evolution of Mg–11Gd–4Y–2Zn–0.5Zr Alloy显示文摘Two different kinds of hot compressions,namely normal-compression and can-compression,were performed on the Mg–11 Gd–4 Y–2 Zn–0.5 Zr alloy,featured with long period stacking ordered(LPSO)phase.The kinking behavior of LPSO phase and microstructure evolution was investigated to clarify the effect of levels of imposed hydrostatic pressure.The results suggest that the LPSO phases including both the intragranular 14 H-LPSO phase and intergranular 18 R-LPSO phase suffer severe kinking behavior under higher hydrostatic pressure induced by can-compression,which is firstly characterized with more kinking times and smaller relative kinking width.The main reason for such enhanced LPSO kinking during cancompression may be mainly ascribed to the higher dislocation density under a higher level of hydrostatic pressure.Meanwhile,a competitive relationship between the kink behaviors of intergranular 18 R-LPSO phase and intragranular 14 H-LPSO phase was observed.That is,the intergranular 18 R-LPSO phase only kinks obviously on the condition that the surrounded intragranular 14 H-LPSO phase scarcely kinks.In contrast to the distinctive kinking of LPSO phase,the dynamic recrystallization(DRX)mechanism shows less dependence on the hydrostatic pressure.Resultantly,similar DRX fractions and crystallographic texture were attained for two compression processes owing to the similar operation of deformation mode. | Ce Zheng Shuai-Feng Chen Rui-Xue Wang Shi-Hong Zhang Ming Cheng | 2021 | Acta Metallurgica Sinica(English Letters)2021，34，2： | 2 |
| 4 | High and ultra-stable energy storage from all-carbon sodium-ion capacitor with 3D framework carbon as cathode and carbon nanosheet as anode显示文摘Sodium-ion capacitors(SICs)are extremely promising due to the combined merits of high energy-power characteristics and considerable price advantage.However,it is still difficult to achieve high energypower outputs and cycle stability in a typical configuration of the metal-based battery-type anode and activated carbon capacitor-type cathode due to the kinetic mismatching.In this work,a carbon nanosheet(PSCS-600)with large interlayer spacing of 0.41 nm derived from the bio-waste pine cone shell was prepared.Besides,the covalent triazine framework derived carbon(OPDN-CTF-A)was obtained through ionothermal synthesis strategy,exhibiting beneficial hierarchical pores(0.5-6 nm)and high heteroatoms(5.6 at%N,6.6 at%O).On this basis,the all-carbon SICs were fabricated by the integration of PSCS-600 anode and OPDN-CTF-A cathode.The device delivered high energy density 111 Wh kg^(-1),high power output of 14,200 W kg^(-1) and ultra-stable cycling life(~90.7%capacitance retention after 10,000 cycles).This work provides new ideas in fabricating carbon-carbon architectural SICs with high energy storage for practical application. | Fangyuan Hu Siyang Liu Shengming Li Cheng Liu Guipeng Yu Ce Song Wenlong Shao Tianpeng Zhang Xigao Jian | 2021 | Journal of Energy Chemistry2021，30，4： | 2 |
| 5 | Texture modification and mechanical properties of AZ31 magnesium alloy sheet subjected to equal channel angular bending显示文摘Analysis of the recently proposed equal channel angular bending(ECAB)process is provided on thin hotrolled AZ31 magnesium alloy sheets.In particular,effects of deformation temperature and strain path on the texture evolution and mechanical properties are systematically investigated under single pass ECAB at various temperatures and multi-pass ECAB process that involves changes in strain paths.It is found that simultaneous activation of multiple twinning types is successfully introduced during ECAB,which results in obvious tilted component of basal texture.Attributed to the domination of extension twins,weaker basal textures are detected after both single pass ECAB at 150℃and three cross passes ECAB at 200℃.After annealing,the basal texture is further weakened via twin-related recrystallization and the annealed microstructure is featured with mixture of basal and non-basal orientated grains.Additionally,the effect of grain orientation on the mode of plastic deformation and the roles of grain orientation and grain boundary on the local strain accommodation are coherently studied.This study reveals that over 60%increase of uniform elongation with marginal reduction of tensile strength less than 5%can be achieved for single pass ECAB at 150℃and three cross passes ECAB at 200℃,which is the result of larger fraction of grains favored with extension twinning and better local strain accommodation. | Shuai-Feng Chen Hong-Wu Song Ming Cheng Ce Zheng Shi-Hong Zhang Myoung-Gyu Lee | 2021 | Journal of Materials Science & Technology2021，，8： | 2 |
| 6 | Optimizing Heavy-duty Anticorrosive Performances of Coating Films Formed by Acrylate-vinylidene Chloride Copolymer Latexes through Twice-painting Technique显示文摘Twice-painting technique was adopted to prepare heavy-duty anticorrosive coating films formed by aqueous latexes of copolymers of vinylidene chloride(VDC) with an acrylate, namely methyl acrylate(MA), ethyl acrylate(EA), butyl acrylate(BA) or 2-ethylhexyl acrylate(EHA). Harsh salt-spray corrosion tests demonstrated that the optimized twicepainting technique was that the acidic latex solution was adjusted to p H 5-6 for the first painting, while it was utilized directly for the second painting. The test of 600 h of harsh salt-spray corrosion showed that MA-VDC85 coating could protect the steel excellently, whereas the other acrylate-VDC coatings with 75%-90% VDC content could not protect the steel so effectively. Further corrosion test showed that(1) MA-VDC85 coating protected steel from loss of metallic luster for at least 1000 h of salt-spray corrosion;(2) adhesion of MA-VDC85 coating to steel was excellent for at least 800 h of saltspray corrosion, but became very poor after 1000 h. Differential scanning calorimetry, thermogravimetric analysis, X-ray photoelectron spectroscopy and Fourier-transform infrared spectroscopy were used to evaluate the corroded MA-VDC85 film. | Ce Fu Tong-xian Zhang Cheng-qi Ji Fa Cheng Wen-zhu Cui 陈宇 | 2015 | Chinese Journal of Polymer Science2015，33，1： | 2 |
| 7 | Multifractal filtering method for extraction of ocean eddies from remotely sensed imagery显示文摘Traditional methods of extracting the ocean wave eddy information from remotely sensed imagery mainly use the edge detection technology such as Canny and Hough operators. However, due to the complexities of ocean eddies and image itself, it is sometimes difficult to successfully detect ocean eddies using these methods. A multifractal filtering technology is proposed for extraction of ocean eddies and demonstrated using NASA MODIS,SeaWiFS and NOAA satellite data set in the typical area, such as ocean west boundary current. Results showed that the new method has a superior performance over the traditional methods. | GE Yong DU Yunyan CHENG Qiuming LI Ce | 2006 | Acta Oceanologica Sinica2006，25，5： | 2 |
| 8 | Towards efficient deep neural network training by FPGA-based batch-level parallelism显示文摘Training deep neural networks(DNNs)requires a significant amount of time and resources to obtain acceptable results,which severely limits its deployment in resource-limited platforms.This paper proposes DarkFPGA,a novel customizable framework to efficiently accelerate the entire DNN training on a single FPGA platform.First,we explore batch-level parallelism to enable efficient FPGA-based DNN training.Second,we devise a novel hardware architecture optimised by a batch-oriented data pattern and tiling techniques to effectively exploit parallelism.Moreover,an analytical model is developed to determine the optimal design parameters for the DarkFPGA accelerator with respect to a specific network specification and FPGA resource constraints.Our results show that the accelerator is able to perform about 10 times faster than CPU training and about a third of the energy consumption than GPU training using 8-bit integers for training VGG-like networks on the CIFAR dataset for the Maxeler MAX5 platform. | Cheng Luo Man-Kit Sit Hongxiang Fan Shuanglong Liu Wayne Luk Ce Guo | 2020 | Journal of Semiconductors2020，41，2： | 2 |
| 9 | Altera- tions in functional connectivity between the hippocampus and prefrontal cortex as a correlate of depressive symptoms in temporal lobe epilepsy显示文摘 | Kemmotsu N Kucukboyaei NE Cheng CE | 2013 | Epilepsy Behavior2013，29，3： | 1 |
| 10 | Topology optimization of turbine disk considering maximum stress prediction and constraints显示文摘For the stress-constrained topology optimization of a turbine disk under centrifugal loads,the jagged boundaries of the mesh and the gray densities on the solid/void interfaces could make the calculated stress field inconsistent with the actual value.It may result in overestimating the maximum stress and thus affect the effectiveness of stress constraints.This paper proposes a new method for predicting the maximum stress to overcome the difficulty.In the process,a predicted density is newly defined to obtain stable boundaries with thin layers of gray elements,a transition factor is innovatively proposed to evaluate the effects of intermediate-density elements,two different stiffness penalty schemes are flexibly used to calculate the elastic modulus of elements,and a linear stress penalty is further adopted to relax the stress field of the structure.The proposed approach for predicting the maximum stress value is verified by the analysis of a structure with smooth boundaries and the topology optimization of a turbine disk.An updating scheme of the stress constraint in the topology optimization is also developed using the predicted maximum stress.Some key ingredients affecting the optimization results are discussed in detail.The results prove the effectiveness and efficacy of the proposed maximum stress prediction and developed stress constraint methods. | Cheng YAN Ce LIU Han DU Cunfu WANG Zeyong YIN | 2023 | Chinese Journal of Aeronautics2023，36，8： | 1 |
| 11 | Impaired brain white matter and functional networks in healthy individuals with auditory verbal hallucinations显示文摘To the Editor:Auditory verbal hallucinations (AVHs) are experienced concomitantly with various neuropsychiatric diagnoses including schizophrenia,bipolar disorder,major depression disorder,post-traumatic stress disorder,and borderline personality disorder. | Xiao-Dong Lin De-Guo Jiang Lang-Lang Cheng Ce Chen Chong-Guang Lin Chuan-Jun Zhuo | 2019 | Chinese Medical Journal2019，，5： | 1 |
| 12 | Optimizing the sterilization of PLGA scaffolds for use in tissue engineering显示文摘 | Holy CE Cheng C Davies JE | 2001 | Biomaterials2001，22，1： | 1 |
| 13 | Combined oestrogen and progesterone for prevening miscarriage显示文摘 | Lim CE Ho K K Cheng N C | 2013 | Cochrane Datebase Syst Rev2013，25，9： | 1 |
| 14 | Optimizing the sterilization of PLGA scaffolds for use in tissue engineering显示文摘 | Cheng C Davies JE | 2001 | Biomaterials2001，22，1： | 1 |
| 15 | Combined oestrogen and progesterone for preventing miscarriage显示文摘 | Lim CE Ho KK Cheng NC | 2013 | Cochrane Datebase Syst Rev2013，25，9： | 1 |
| 16 | Controlling dynamic recrystallization via modified LPSO phase morphology and distribution in Mg-Gd-Y-Zn-Zr alloy显示文摘Featured initial microstructures of Mg-11Gd-4Y-2Zn-0.5Zr alloy(wt%) were obtained by adjusting temperatures of solid solution and cooling methods, including island intergranular 18R and 14H LPSO phases with low-density stacking faults, differentially spaced lamellar intragranular 14H-LPSO phases, and network intergranular 18R-LPSO phases with high-density intragranular stacking faults. Effects of these featured LPSO phases and stacking faults on dynamic recrystallization(DRX) behavior were investigated via hot compression. Promoted DRX behavior via particle stimulated nucleation(PSN) is introduced by coexisting intergranular island 18R and 14H LPSO phases and intragranular wide spacing lamellar 14H-LPSO phases, contributing the highest DRX fraction of 42.6%. Conversely, it is found that DRX behavior with network intergranular 18R-LPSO phases and dense intragranular stacking fault is considerably inhibited with the lowest fraction of 22.8%. That is, the restricted DRX due to dislocations pinning by stacking faults overwhelms the enhanced DRX behavior via PSN of island intergranular 18R and 14H LPSO phases. Specially, compared with dense intragranular lamellar 14H-LPSO phases, high-density stacking faults exert a larger inhibition effect on DRX behavior. | Ce Zheng Shuaifeng Chen Ming Cheng Shihong Zhang Yingju Li Yuansheng Yang | 2023 | Journal of Magnesium and Alloys2023，11，11： | 1 |
| 17 | Modeling the Dynamic Recrystallization of Mg–11Gd–4Y–2Zn–0.4Zr Alloy Considering Non-uniform Deformation and LPSO Kinking During Hot Compression显示文摘Hot compression tests of Mg–11 Gd–4 Y–2 Zn–0.4 Zr alloy(GWZK114)were conducted at a deformation temperature range of 300–500°C and a strain rate range of 0.01–10.0 s-1.Based on systematic microstructure observation,it is confirmed that long period stacking ordered(LPSO)phase displays essential and evolving roles on the dynamic recrystallization(DRX)behavior.The results indicate that the plastic deformation is mainly coordinated by simultaneous exist of LPSO kinking of lamella 14 H-LPSO phase and DRX at 350–450℃,and DRX at 500℃.Further,it is found that the LPSO kinking induced during 350–450℃can delay the DRX.A phenomenological DRX model of GWZK114 alloy is established to be XDRX=1.exp[-0.5((ε-εc)/ε^*)0.91].Non-uniform distribution of plastic strain during compression was considered via finite element method and it ensures a good prediction of DRX fraction under a large plastic strain.Meanwhile,an enhanced DRX model,taking its formulation as XDRX={1.exp[-0.5((ε-εc)/ε*)0.91]}(T/(226.8)-1)n,n=3.82ε0.083,is proposed for the first time to capture the hindering effect of 14 H-LPSO kinking on DRX behavior.The predicted results of this enhanced DRX model agree well with the experimental cases,where 14 H-LPSO kinking is dominated or partially involved(300–450℃).Besides,a size model of DRX grains is also established and can depict the evolution of DRX grain size for all the investigated compression conditions with accounting for temperature rising at high strain rates(5 s^-1 and 10 s^-1). | Hong-Xuan Zhang Shuai-Feng Chen Ming Cheng Ce Zheng Shi-Hong Zhang | 2019 | Acta Metallurgica Sinica(English Letters)2019，32，9： | 1 |
| 18 | Optimum Detecting Arrays for Independent Interaction Faults显示文摘The use of detecting arrays(DTAs) is motivated by the need to locate and detect interaction faults arising between the factors in a component-based system in software testing.The optimality and construction of DTAs have been investigated in depth for the case in which all the interaction faults are assumed to have the same strength;however,as a practical concern,the strengths of these faults are not always identical.For real world applications,it would be desirable for a DTA to be able to identify and detect faulty interactions of a strength equal to or less than a specified value under the assumption that the faulty interactions are independent from one another.To the best of our knowledge,the optimality and construction of DTAs for independent interaction faults have not been studied systematically before.In this paper,we establish a general lower bound on the size of DTAs for independent interaction faults and explore the combinatorial feature that enable these DTAs to meet the lower bound.Taking advantage of this combinatorial characterization,several classes of optimum DTAs meeting the lower bound are presented. | Ce SHI Cheng Min WANG | 2016 | Acta Mathematica Sinica,English Series2016，32，2： | 1 |
| 19 | Nitric oxide and opioid tolerance显示文摘 | Babey AM Kolesnikov Y Cheng J Inturrisi CE Trifilletti RR Pastemak GW | 1994 | Neuropharmacology1994，33，11： | 1 |
| 20 | Nutritional status of mechanically ventilated critically ill patients:Comparison of different types of nutritional support显示文摘 | Huang YC Yen CE Cheng CH | 2000 | Clin Nutr2000，19，2： | 1 |
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