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46篇 您的检索式:作者名="Yuchao Yang"
    题名 作者 年代 出处 被引量
1Seasonal variation in body mass and energy budget in Chinese bulbuls (pycnonotus sinensis)显示文摘Background: Seasonal adjustments in body mass and energy budget are important for the survival of small birds in temperate zones. Seasonal changes in body mass, body temperature, gross energy intake(GEI), digestible energy intake(DEI), body fat content, as well as length and mass of the digestive tract, were measured in Chinese Bulbuls(Pycnonotus sinensis) caught in the wild at Wenzhou, China.Methods: Body mass was determined with a Sartorius balance. The caloric contents of the dried food and feces were then determined using a oxygen bomb calorimeter. Total fat was extracted from the dried carcasses by ether extraction in a Soxhlet apparatus. The digestive tract of each bird was measured and weighed, and was then dried to a constant mass.Results: Body mass showed a significant seasonal variation and was higher in spring and winter than in summer and autumn. Body fat was higher in winter than in other seasons. GEI and DEI were significantly higher in winter.The length and mass of the digestive tract were greatest in winter and the magnitude of both these parameters was positively correlated with body mass, GEI and DEI. Small passerines typically have higher daily energy expenditure in winter, necessitating increased food consumption.Conclusions: This general observation is consistent with the observed winter increase in gut volume and body mass in Chinese Bulbuls. These results suggest that Chinese Bulbuls adjust to winter conditions by increasing their body mass, body fat, GEI, DEI and digestive tract size.Mengsi Wu Yuchao Xiao Fang Yang Limeng Zhou Weihong Zheng Jinsong Liu 2014Chinese Birds2014,,1:6
2Virus-induced Phytoene Desaturase(PDS) Gene Silencing Using Tobacco Rattle Virus in Lilium × formolongi显示文摘Gene function analysis is challenging for Lilium due to the lack of an efficient method for stable genetic transformation. Virus-induced gene silencing(VIGS) is an attractive tool for determining gene function in plants. This study reported that Tobacco rattle virus(TRV)-based VIGS of a PHYTOENE DESATURASE(PDS) ortholog(LhPDS) can be achieved in Lilium × formolongi seedlings, with a survival rate of 92%, using the inoculation method of rubbing plus injection. Compared with untreated and mock-treated seedlings, the photobleached leaf phenotype of silenced plants significantly correlates with down-regulation of endogenous LhPDS(P ≤ 0.05). In addition, the silencing phenomenon can be observed in the growing points of plants, indicating that systemic viral infection was achieved using the protocol. The results indicate that TRV-based VIGS can be used to characterize gene function in Lilium × formolongi. This work lays the foundation for gene function analysis and molecular breeding in Lilium spp.Hua Xu Leifeng Xu Panpan Yang Yuwei Cao Yuchao Tang Guoren He Suxia Yuan Jingyi Lei Jun Ming 2019Horticultural Plant Journal2019,5,1:6
3A 2-D Fuzzy Logic Based MRAS Scheme for Sensorless Control of Interior Permanent Magnet Synchronous Motor Drives with Cyclic Fluctuating Loads显示文摘Model reference adaptive system(MRAS)is typically employed for rotor position/speed estimation in sensorless interior permanent magnet motor(IPMSM)drives.The adjustment of control parameters in MRAS is a key issue for IPMSM drive systems with cyclic fluctuating loads.In order to avoid the difficulties involved with manual tuning of the control parameters,a new MRAS scheme based on fuzzy logic is proposed in this paper in which a fuzzy controller replaces the conventional PI regulator.To implement this new MRAS scheme,a two-dimensional(2-D)fuzzy rule is designed.The proposed control scheme is employed in the IPMSM drives with cyclic fluctuating loads such as compressors.In order to lower the motor speed ripple caused by the cyclic fluctuating load,a feed-forward compensation strategy with the load-matching motor output torque pattern is developed.Experimental results demonstrate the feasibility and effectiveness of the proposed fuzzy logic based MRAS scheme with minimal rotor position estimation error.Yang Mei Kai Sun Yuchao Shi 2015Chinese Journal of Electrical Engineering2015,1,1:6
4Electrode design using revolving entity extraction for high-efficiency electric discharge machining of integral shrouded blisk显示文摘The integral shrouded blisk provides better performance with minimum weight,but its semi-open structure presents problems for its production.Manufacturing processes of these components require a removal of about 70%-90%of material from their blanks.Multi-axis electrical discharge machining(EDM)is commonly used for these processes,but its poor efficiency cannot meet the requirements of mass production.Strong flushing assisted high-current discharge is able to improve the machining efficiency.In this paper,this method was applied to manufacture the integral shrouded blisk.An electrode design method was proposed.Taking the largest revolving entity inside the flow channel as the base geometry,this laminated arc-shaped hollow electrode meets the requirements such as high pressure flushing,tool wear compensation,and easy to be made.A 4-axis linkage machining tool path with planetary motion was proposed.Taking an integral guide vane ring as an example,it has been experimentally verified that the time consumption for each channel using this method was reduced to a half of the ordinary EDM method,while the finished surface quality remains same.Yuchao JIA Guanxin CHI Yang SHEN Kun ZHANG Zhenlong WANG Yukui WANG 2021Chinese Journal of Aeronautics2021,34,6:5
5Vertical‐organic‐nanocrystal‐arrays for crossbar memristors with tuning switching dynamics toward neuromorphic computing显示文摘Memristors proposed by Leon Chua provide a new type of memory device for novel neuromorphic computing applications.However,the approaching of distinct multi‐intermediate states for tunable switching dynamics,the con-trolling of conducting filaments(CFs)toward high device repeatability and reproducibility,and the ability for large‐scale preparation devices,remain full of challenges.Here,we show that vertical‐organic‐nanocrystal‐arrays(VONAs)could make a way toward the challenges.The perfect one‐dimensional structure of the VONAs could confine the CFs accurately with fine‐tune resistance states in a broad range of 103 ratios.The availability of large‐area VONAs makes the fabrication of large‐area crossbar memristor arrays facilely,and the analog switching characteristic of the memristors is to effectively imitate different kinds of synaptic plasticity,indicating their great potential in future applications.Fangxu Yang Lingjie Sun Qingxi Duan Huanli Dong Zhaokun Jing Yuchao Yang Rongjin Li Xiaotao Zhang Wenping Hu Leon Chua 2021SmartMat2021,2,1:5
6Multi-focus image fusion based on block matching in 3D transform domain显示文摘Fusion methods based on multi-scale transforms have become the mainstream of the pixel-level image fusion. However,most of these methods cannot fully exploit spatial domain information of source images, which lead to the degradation of image.This paper presents a fusion framework based on block-matching and 3D(BM3D) multi-scale transform. The algorithm first divides the image into different blocks and groups these 2D image blocks into 3D arrays by their similarity. Then it uses a 3D transform which consists of a 2D multi-scale and a 1D transform to transfer the arrays into transform coefficients, and then the obtained low-and high-coefficients are fused by different fusion rules. The final fused image is obtained from a series of fused 3D image block groups after the inverse transform by using an aggregation process. In the experimental part, we comparatively analyze some existing algorithms and the using of different transforms, e.g. non-subsampled Contourlet transform(NSCT), non-subsampled Shearlet transform(NSST), in the 3D transform step. Experimental results show that the proposed fusion framework can not only improve subjective visual effect, but also obtain better objective evaluation criteria than state-of-the-art methods.YANG Dongsheng HU Shaohai LIU Shuaiqi MA Xiaole SUN Yuchao 2018Journal of Systems Engineering and Electronics2018,29,2:5
7Reemergent Cases of COVID-19--Xinjiang Uygur Autonomous Region,China,July 16,2020显示文摘Before the coronavirus disease 2019(COVID-19)outbreak on July 16,2020,no new COVID-19 cases were reported in Urumqi City of Xinjiang for 150 consecutive days.During this outbreak,826 confirmed COVID-19 cases have been reported in Urumqi.The phylogenetic characteristics of COVID-19 virus from clinical specimens of the initial 4 cases in the Urumqi outbreak were sequenced.Cao Chen Hemuti Ma Zhiyuan Jia Xiang Zhao Dayan Wang Jun Zhao Zhenguo Gao Peipei Liu Yang Song Zhixiao Chen Yuchao Wu Yao Meng Guizhen Wu Wenbo Xu Xucheng Fan Yong Zhang 2020China CDC weekly2020,2,39:5
8One-pot synthesis of the highly efficient bifunctional Ni-SAPO-11 catalyst显示文摘Hydro isomerization of linear alkanes to branched isomers is an important petrochemical process for production of gasoline with high octane number.Non-noble metal bifunctional catalysts used in this process always suffer from low metal dispersion and poor metal-acid synergy.Herein,a facile one-pot synthesis method was used to simultaneously regulate metal particle sizes and acidity of the Ni-SAPO-11 hydroisomerization catalyst.The physicochemical properties are investigated using XANES,EXAFS,TEM/STEM,FT-IR,XPS,UV-vis and NH_3-TPD.Apart from the highly dispersed nickel nanoparticles with an average diameter of 8 nm,the framework Ni~(2+)ions are generated via substituting framework Al~(3+)ions of the SAPO-11.The formed NiP-OH structures have lower deprotonation energy(DPE)than the SiAl-OH ones,contributing more and stronger acid sites to the Ni-SAPO-11 catalyst.The great metal-acid synergy including high metal to acid sites ratio(n_(Ni)/n_A)and close intimacy is obtained for the Ni-SAPO-11 catalyst.The Ni-SAPO-11 catalyst outperforms the counterpart prepared by the impregnation method and exhibits comparable activity and isomers selectivity to the Pt/SAPO-11 catalyst in the n-hexane hydroisomerization.Yuchao Lyu Weilong Zhan Zhumo Yu Xinmei Liu Ye Yang Xiaoxing Wang Chunshan Song Zifeng Yan 2021Journal of Materials Science & Technology2021,,17:4
9Nuclear Aurora kinase A switches m^(6)A reader YTHDC1 to enhance an oncogenic RNA splicing of tumor suppressor RBM4显示文摘Aberrant RNA splicing produces alternative isoforms of genes to facilitate tumor progression,yet how this process is regulated by oncogenic signal remains largely unknown.Here,we unveil that non-canonical activation of nuclear AURKA promotes an oncogenic RNA splicing of tumor suppressor RBM4 directed by m^(6)A reader YTHDC1 in lung cancer.Nuclear translocation of AURKA is a prerequisite for RNA aberrant splicing,specifically triggering RBM4 splicing from the full isoform(RBM4-FL)to the short isoform(RBM4-S)in a kinase-independent manner.SiSi Li YangFan Qi JiaChuan Yu YuChao Hao Bin He MengJuan Zhang ZhenWei Dai TongHui Jiang SuYi Li Fang Huang Ning Chen Jing Wang MengYing Yang DaPeng Liang Fan An JinYao Zhao WenJun Fan YuJia Pan ZiQian Deng YuanYuan Luo Tao Guo Fei Peng ZhiJie Hou ChunLi Wang FeiMeng Zheng LingZhi Xu Jie Xu QingPing Wen BiLian Jin Yang Wang Quentin Liu 2022Signal Transduction and Targeted Therapy2022,7,5:4
10In-memory computing with emerging nonvolatile memory devices显示文摘The von Neumann bottleneck and memory wall have posed fundamental limitations in latency and energy consumption of modern computers based on von Neumann architecture. In-memory computing represents a radical shift in the computer architecture that can address such problems by merging computing functions within the memory itself. In this article, we review the emerging nonvolatile memory devices,such as resistance-based and charge-based memory devices, that are explored for in-memory computing applications. We will provide an overview of the materials, mechanisms, and integration of these devices,and discuss the optimizations at the device and array levels that are required to better support in-memory computing. Recent progress in the application of in-memory computing in artificial neural networks, spiking neural networks, digital logic in memory as well as hardware security will also be discussed. Finally, we will discuss the remaining challenges in this field and potential pathways to address them.Caidie CHENG Pek Jun TIW Yimao CAI Xiaoqin YAN Yuchao YANG Ru HUANG 2021Science China(Information Sciences)2021,64,12:3
11Efficient 16 Boolean logic and arithmetic based on bipolar oxide memristors显示文摘The physically separated memory and logic units in traditional von Neumann computers place essential limits on the performance and cause increased energy consumption,and hence in-memory computing is required to overcome this bottleneck.Here,a new bipolar memristor based in-memory logic approach is proposed,which is capable of achieving all 16 possible Boolean logic functions in a single device in less than3 steps.This approach does not require initialization and can facilitate logic cascading,and the calculation taking place in-situ is showcased by 1-bit full adder and 2-bit multiplier with improved efficiency,thus showing a great prospect in future in-memory computing architecture.Rui YUAN Mingyuan MA Liying XU Zhenhua ZHU Qingxi DUAN Teng ZHANG Yu ZHU Yu WANG Ru HUANG Yuchao YANG 2020Science China(Information Sciences)2020,63,10:3
12Dynamic tensile and failure behavior of bi-directional reinforced GFRP materials显示文摘In this paper,a series of static/dynamic tensile tests are performed for glass fiber reinforced plastic(GFRP)composites.Using the combination of high-speed photography and digital image correlation(DIC)technology,true stress-strain curves in different directions and strain rates are obtained.We also obtained the dynamic failure strain of the material in different directions,which are used to accurately describe the dynamic tensile and failure behavior of the material.The experimental results show that there is a stiffness change point N in three directions under different strain rate(10-3 s-1,10 s-1,100 s-1)tensile conditions.The stiffness before and after N point is recorded as Einitial and Echanged respectively.The values of Echanged in weft direction and warp direction are about 30%to 50%of Einitial,while Echanged in tilt direction is only about 10%of Einitial.The fiber has the highest strength in the weft direction and the tilt direction has the lowest strength.With the combination of high-speed photography and DIC technology,the dynamic failure parameters of different directions under the strain rate of 100 s-1 are obtained.The dynamic failure strains in three directions are 0.245,0.373 and 0.341,respectively.The parameters are verified by impact three-point bending test.These works can more accurately describe the dynamic mechanical behavior of glass fiber reinforced plastic(GFRP)composites and provide reference for the design of GFRP structures.Zishang Liu Zhe Yang Yuchao Chen Yangyang Yu Yanpeng Wei Maohui Li Chenguang Huang 2020Acta Mechanica Sinica2020,36,2:2
13Investigation of Nb Ox-based volatile switching device with self-rectifying characteristics显示文摘Dear editor,Resistive random access memory(RRAM),one of the most promising emerging non-volatile memory technologies,has been extensively investigated by researchers from both academia and industry due to its fast speed and excellent scalability for storage class memory(SCM)[1-3].To achieve large-scale integration in an RRAM array,each cell needs to contain a nonlinear device to eliminate the sneak path which may lead to false program and read-margin narrowing[2,3].Usually,transistors or selectors are serially connected to RRAM cells to act as the selective elements.Yichen FANG Zongwei WANG Caidie CHENG Zhizhen YU Teng ZHANG Yuchao YANG Yimao CAI Ru HUANG 2019Science China(Information Sciences)2019,62,12:2
14Insight to the Express Transport Network显示文摘Hua Yang Yuchao Ni 2009Computer Physics Communications2009,,8:1
15An Inertial Alternating Direction Method of Multipliers for Solving a Two-Block Separable Convex Minimization Problem显示文摘The alternating direction method of multipliers(ADMM)is a widely used method for solving many convex minimization models arising in signal and image processing.In this paper,we propose an inertial ADMM for solving a two-block separable convex minimization problem with linear equality constraints.This algorithm is obtained by making use of the inertial Douglas-Rachford splitting algorithm to the corresponding dual of the primal problem.We study the convergence analysis of the proposed algorithm in infinite-dimensional Hilbert spaces.Furthermore,we apply the proposed algorithm on the robust principal component analysis problem and also compare it with other state-of-the-art algorithms.Numerical results demonstrate the advantage of the proposed algorithm.Yang YANG Yuchao TANG 2021Journal of Mathematical Research with Applications2021,41,2:1
16Fulgide Derivative-Based Solid-State Reversible Fluorescent Switches for Advanced Optical Memory显示文摘Solid-state fluorescent switches with reversible luminescence characteristics have attracted considerable attention because of their broad applications in advanced photonics,such as anticounterfeiting inks,optical writing and erasing,and biological imaging.Herein,we have fabricated a solid-state reversible fluorescent switch under alternating UV(365 nm)and visible light treatments based on a fulgide(FUL)-functionalized tetraphenylethylene(TPE)derivative(TPE-FUL)containing a photochromic group FUL and aggregation-induced emission(AIE)luminogen TPE.TPE-FUL exhibited excellent reversible absorption and luminescence owing to the interconversion between open TPE-FUL(O-TPE-FUL)and closed TPE-FUL(C-TPE-FUL).Photophysical and theoretical investigations revealed that the luminescence of O-TPE-FUL is based on the local excited state of the TPE moiety,whereas the fluorescence quenching of C-TPE-FUL originates from the intramolecular charge transfer from the TPE to the FUL moiety.The excellent reversible photoswitching properties of TPE-FUL in the solid state allows for its potential use in advanced optical memory applications,such as anticounterfeiting,optical writing and erasing,and information encryption.Yang Jiao Runqing Yang Yuchao Luo Leijing Liu Bin Xu Wenjing Tian 2022CCS Chemistry2022,4,1:1
17Embracing the era of neuromorphic computing显示文摘In recent years,deep learning has made tremendous achievements in computer vision,natural language processing,man-machine games and so on,where artificial intelligence can reach or go beyond the level of human beings.However,behind so many glories,some serious challenges exist in the bottom hardware,hindering the further development of Artificial Intelligence.Yanghao Wang Yuchao Yang Yue Hao Ru Huang 2021Journal of Semiconductors2021,42,1:1
18Cancer Cell:利用脑瘤对胆固醇的需求或可开发出癌症治疗的新方法显示文摘最近路德维希癌症研究所的研究人员发表了一项研究进展,他们发现了成胶质细胞瘤的一个代谢弱点,并在研究中揭示了如何利用这个弱点开发潜在治疗方法。成胶质细胞瘤是一种侵袭性强并且不可治愈的脑癌类型。研究人员发现成胶质细胞瘤细胞向细胞内转入大量胆固醇以维持细胞存活。可以利用处于临床开发阶段的药物分子特异且有效地削弱这一维持癌细胞存活的机制。相关研究结果发表在国际学术期刊Cancer Cell上。Genaro R. Villa Jonathan J. Hulce Ciro Zanca Junfeng Bi Shiro Ikegami Gabrielle L. Cahill Yuchao Gu Kenneth M. Lum Kenta Masui Huijun Yang Xin Rong Cynthia Hong Kristen M. Turner Feng Liu Gary C. Hon David Jenkins Michael Martini Aaron M. Armando Oswald Quehenberger Timothy F. Cloughesy Frank B. Furnari Webster K. Cavenee Peter Tontonoz Timothy C. Gahman Andrew K. Shiau Benjamin F. Cravatt Paul S. Mischel 2016现代生物医学进展2016,16,35:1
19Fully room-temperature-fabricated nonvolatile resistive memory for ultrafast and high-density memory application显示文摘Yang Yuchao Pan Fang Liu Qi 2009Nano Letters2009,9,4:1
20Extraction characteristics and kinetic studies of oleanolic and ursolic acids from Hedyotis diffusa under ultrasound-assisted extraction conditions显示文摘WEI Mingchi YANG Yuchao 2014Separation and Purification Technology2014,130,:1
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