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| 1 | A closed-loop process for recycling LiNi_xCo_yMn_((1-x-y))O_2 from mixed cathode materials of lithium-ion batteries显示文摘With the rapid development of consumer electronics and electric vehicles(EV), a large number of spent lithium-ion batteries(LIBs) have been generated worldwide. Thus, effective recycling technologies to recapture a significant amount of valuable metals contained in spent LIBs are highly desirable to prevent the environmental pollution and resource depletion. In this work, a novel recycling technology to regenerate a LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2 cathode material from spent LIBs with different cathode chemistries has been developed. By dismantling, crushing,leaching and impurity removing, the LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2(selected as an example of LiNi_xCo_yMn_(1-x-y)O_2) powder can be directly prepared from the purified leaching solution via co-precipitation followed by solid-state synthesis. For comparison purposes, a fresh-synthesized sample with the same composition has also been prepared using the commercial raw materials via the same method. X-ray diffraction(XRD), scanning electron microscopy(SEM) and electrochemical measurements have been carried out to characterize these samples. The electrochemical test result suggests that the re-synthesized sample delivers cycle performance and low rate capability which are comparable to those of the freshsynthesized sample. This novel recycling technique can be of great value to the regeneration of a pure and marketable LiNi_xCo_yMn_(1-x-y)O_2 cathode material with low secondary pollution. | Rujuan Zheng Wenhui Wang Yunkun Dai Quanxin Ma Yuanlong Liu Deying Mu Ruhong Li Jie Rena Changsong Dai | 2017 | Green Energy & Environment2017，2，1： | 11 |
| 2 | Wide-steering-angle high-resolution optical phased array显示文摘Optical phased array(OPA)technology is considered a promising solution for solid-state beam steering to supersede the traditional mechanical beam steering.As a key component of the LIDAR system for long-range detection,OPAs featuring a wide steering angle and high resolution without beam aliasing are highly desired.However,a wide steering range requires a waveguide pitch less than half of the wavelength,which is easily subjected to cross talk.Besides,high resolution requires a large aperture,and it is normally achieved by a high count number of waveguides,which complicates the control system.To solve the mentioned issues,we design two high-performance 128-channel OPAs fabricated on a multilayered SiN-on-SOI platform.Attributed to the nonuniform antenna pitch,only 128 waveguides are used to achieve a 4 mm wide aperture.Besides,by virtue of innovative dual-level silicon nitride(Si_(3)N_(4))waveguide grating antennas,the fishbone antenna OPA achieves a 100°×19.4°field of view(FOV)with divergence of 0.021°×0.029°,and the chain antenna OPA realizes a 140°×19.23°FOV with divergence of 0.021°×0.1°.To our best knowledge,140°is the widest lateral steering range in two-dimensional OPA,and 0.029°is the smallest longitudinal divergence.Finally,we embed the OPA into a frequency-modulated continuous-wave system to achieve 100 m distance measurement.The reflected signal from 100 m distance is well detected with 26 dBm input transmitter power,which proves that OPA serves as a promising candidate for transceiving optical signal in a LIDAR system. | YINGZHI LI BAISONG CHEN QUANXIN NA QIJIE XIE MIN TAO LANXUAN ZHANG ZIHAO ZHI YUXUAN LI XIAOBIN LIU XIANSHU LUO GUOQIANG LO FENGLI GAO XUEYAN LI JUNFENG SONG | 2021 | Photonics Research2021，9，12： | 7 |
| 3 | A Self-certified Cross-Cluster Asymmetric Group Key Agreement for Wireless Sensor Networks显示文摘Wireless sensor networks have some obvious characteristics, such as communication range is limited, computing power is limited and energy is limited. Group key agreement in this environment requires a cross-cluster, computation and communication overhead are lightweight and highly safe group key agreement protocol. Aiming at these demands, the paper proposes a Self-certified cross-cluster Asymmetric group key agreement(SC-AGKA). To establish a lightweight and efficient group communication channel among sensor nodes. According to the cluster head as the bridge node to realize the sensor nodes in different cluster have the same group key information, and negotiate a pair of asymmetric group keys to realize the cross cluster secure communication. The group communication adopts asymmetric encryption mechanism. It realizes the group security communication mechanism of message sender unconstraint. The asymmetric group key agreement has the key self-certified, which does not need additional rounds to verify the correctness of group key. Proven and analysis show that the proposed protocol has the advantages of in security and energy consumption. | ZHANG Qikun LI Yongjiao ZHANG Quanxin YUAN Junling WANG Ruifang GAN Yong TAN Yu'an | 2019 | Chinese Journal of Electronics2019，28，2： | 5 |
| 4 | Enhancement of Bio-based para-Xylene Selectivity in Catalytic Fast Pyrolysis of Cellulose Using a Surface-modified Mg/P/HZSM-5 Catalyst显示文摘With the growing consumption of oil, the production of /?-xylene(PX) from renewable biomass has gained significant attention recently. This work demonstrated that cellulose, a main component in lignocellulosic biomass, was directly converted into PX over the Mg/P surface-modified zeolites. The catalysts modified by the incorporation of P2O5 and MgO into HZSM-5(HZ) promoted the isomerization of zw-/o-xylenes to p-xylene. The PX selectivity was greatly enhanced using the modified zeolites due to the deactivation of external surface and the adjustment of pore entrance. In addition, the addition of methanol to cellulose was beneficial to increase the selectivity of xylenes due to the alkylation reactions and the Diels-Alder reactions between cellulose-derived furans and methanol-derived olefins. The highest PX yield of 10.7%(molar fraction) with a high PX selectivity in xylenes(97.1%) was obtained over the 10%Mg/5%P/HZ catalyst. The reaction pathway for the formation ofp-xylene was addressed according to the study of the key reactions and the characterization of catalysts. | WANG Yulan FAN Minghui ZHU Lijuan WANG Shengfei HE Yuting LI Quanxin | 2019 | Chemical Research in Chinese Universities2019，35，3： | 4 |
| 5 | A Hybrid Compression Framework for Large Scale Trajectory Data in Road Networks显示文摘A Hybrid compression framework of trajectory data(HCFT) is proposed for effective compression of tra jectory data with road network limited. It's different from the present researches which mainly focus on compression of single tra jectory, and further takes data redundancy raised by the similarity of movement pattern of moving objects into consideration. HCFT divides the redundancy of tra jectory data into Single tra jectory redundancy(STR) and Multiple tra jectories redundancy(MTR) and compresses them in a hybrid way(i.e. synchronous compression for STR at first and then asynchronous compression for MTR). We propose an asynchronous extraction algorithm for MTR based on frequent Road track subsequence(RTS), which replaces similar movement route by RTS, with the complexity of calculation significantly reduced. HCFT can not only gain higher compression ratio,but also ensure effectiveness of compressed tra jectory. We also verify effectiveness and superiority of the new method according to the experiments of real tra jectory dataset. | WU Peili TAN Yu'an ZHENG Jun ZHANG Quanxin LI Yuanzhang CHENG Zijing | 2015 | Chinese Journal of Electronics2015，24，4： | 4 |
| 6 | A Specific-Targeting Asymmetric Group Key Agreement for Cloud Computing显示文摘When the information is exchanged and transmitted among the group members in mobile cloud environment, the group members may distribute different security domains. The information exchanged among group members may have different secret levels in this environment. When a person has some secret information, he only wants to share these information with some people who have the appropriate level of security permissions, other than all the members in the group. Aiming at these needs,we propose a flexible Asymmetric group key agreement(AGKA) protocol that information exchange and transmission are specific-targeting. The paper adopts bilinear mapping and two-way anonymous authentication technology to hide personal identity authentication information, and uses storage and computing migration technology to reduce the resource consumption of mobile terminal, and also proposes the secret key factor oriented extraction and combinations technology to achieve multi-level three-dimensional complex space security information exchange requirements and meet the lightweight computing. The analysis proves that the protocol has good safety performance and low resource consumption. | TAN Yu'an ZHENG Jiamin ZHANG Qikun ZHANG Xiaosong LI Yuanzhang ZHANG Quanxin | 2018 | Chinese Journal of Electronics2018，27，4： | 2 |
| 7 | Synthesis and characteristics of the C12A7-O ? nanoparticles by citric acid sol–gel combustion method显示文摘 | Lu Gong Zhou Lin Shen Ning Jianqiu Sun Jing Shen Youshifumi Torimoto Quanxin Li | 2010 | Materials Letters2010，，11： | 2 |
| 8 | Characterization of magnetic field waveforms from triggered lightning attached on transmission line at 18 m,130 m and 1.55 km显示文摘The authors present a statistical analysis of characteristics of magnetic fields at different distances from triggered lightning experiments on Transmission Line at Guangdong Comprehensive Observation Experiment on Lightning Discharge during the summer of 2019.The histograms and parameters of statistical distributions for the following 22 waveform characteristics are presented,including current peak,10%-90%risetime,half-peak width and steepness,leader magnetic field peak,return-stroke magnetic field peak,magnetic field peak,10%-90%risetime,half-peak width and steepness at 15 m,130 m and 1.55 km.The arithmetic mean of 48 return stroke current peaks is 18.3 kA and the geometric mean is 17.0 kA.The arithmetic and geometric means of the current 10%-90%risetime are 0.6 and 0.6μs,respectively.The leader magnetic field,return-stroke magnetic field and magnetic field peak at 18 m,130 m and 1.55 km are shown linear relationship with current peak values.With increasing the distance(r),the magnetic field peak value decrease,combining the magnetic field characteristics reported by previous studies,the analysis of all magnetic field peaks in different distances suggest linear relationship with r0.90.The magnetic field 10%-90%risetime shows linear relationship with ln(r)and half-peak width did not show significant correlation with distance. | Li Cai Jin Li Jianguo Wang Mi Zhou Quanxin Li Yadong Fan | 2021 | High Voltage2021，6，2： | 1 |
| 9 | Oscillation criteria for second-order half-linear delay dynamic equations with damping on time scales 显示文摘 | Zhang Quanxin Gao Li | 2010 | Sci Sin Math2010，40，7： | 1 |
| 10 | Selective conversion of bio-oil to light olefins: Controlling catalytic cracking for maximum olefins显示文摘 | Feiyan Gong Zhi Yang Chenggui Hong Weiwei Huang Shen Ning Zhaoxia Zhang Yong Xu Quanxin Li | 2011 | Bioresource Technology2011，，19： | 1 |
| 11 | Lie symmetry a-nalysis and exact explicit solutions for general Burgers′equation显示文摘 | Liu Hanze Li Jibin Zhang Quanxin | | 0，，1： | 1 |
| 12 | On-chip generation of Bessel–Gaussian beam via concentrically distributed grating arrays for long-range sensing显示文摘Bessel beam featured with self-healing is essential to the optical sensing applications in the obstacle scattering environment.Integrated on-chip generation of the Bessel beam outperforms the conventional structure by small size,robustness,and alignment-free scheme.However,the maximum propagation distance(Z_(max))provided by the existing approaches cannot support long-range sensing,and thus,it restricts its potential applications.In this work,we propose an integrated silicon photonic chip with unique structures featured with concentrically distributed grating arrays to generate the Bessel-Gaussian beam with a long propagation distance.The spot with the Bessel function profile is measured at 10.24m without optical lenses,and the photonic chip’s operation wavelength can be continuously performed from 1500 to 1630 nm.To demonstrate the functionality of the generated Bessel-Gaussian beam,we also experimentally measure the rotation speeds of a spinning object via the rotational Doppler Effect and the distance through the phase laser ranging principle.The maximum error of the rotation speed in this experiment is measured to be 0.05%,indicating the minimum error in the current reports.By the compact size,low cost,and mass production potential of the integrated process,our approach is promising to readily enable the Bessel-Gaussian beam in widespread optical communication and micro-manipulation applications. | Zihao Zhi Quanxin Na Qijie Xie Baisong Chen Yingzhi Li Xiaobin Liu Xuetong Li Lijun Wang Guoqiang Lo Junfeng Song | 2023 | Light(Science & Applications)2023，12，5： | 1 |
| 13 | Backdoor Attacks on Image Classification Models in Deep Neural Networks显示文摘Deep neural network(DNN)is applied widely in many applications and achieves state-of-the-art performance.However,DNN lacks transparency and interpretability for users in structure.Attackers can use this feature to embed trojan horses in the DNN structure,such as inserting a backdoor into the DNN,so that DNN can learn both the normal main task and additional malicious tasks at the same time.Besides,DNN relies on data set for training.Attackers can tamper with training data to interfere with DNN training process,such as attaching a trigger on input data.Because of defects in DNN structure and data,the backdoor attack can be a serious threat to the security of DNN.The DNN attacked by backdoor performs well on benign inputs while it outputs an attacker-specified label on trigger attached inputs.Backdoor attack can be conducted in almost every stage of the machine learning pipeline.Although there are a few researches in the backdoor attack on image classification,a systematic review is still rare in this field.This paper is a comprehensive review of backdoor attacks.According to whether attackers have access to the training data,we divide various backdoor attacks into two types:poisoning-based attacks and non-poisoning-based attacks.We go through the details of each work in the timeline,discussing its contribution and deficiencies.We propose a detailed mathematical backdoor model to summary all kinds of backdoor attacks.In the end,we provide some insights about future studies. | ZHANG Quanxin MA Wencong WANG Yajie ZHANG Yaoyuan SHI Zhiwei LI Yuanzhang | 2022 | Chinese Journal of Electronics2022，31，2： | 1 |
| 14 | A study of the NO x storage catalyst of Ba–Fe–O complex oxide显示文摘 | Xingang Li Jiafu Chen Peiyan Lin Ming Meng Yilu Fu Jing Tu Quanxin Li | 2003 | Catalysis Communications2003，，1： | 1 |
| 15 | A laser flash photolysis study of amino acids and dipeptides using 4-nitroquinoline 1-oxide as a photosensitizer: The pH dependence显示文摘 | Zhenyu Sheng Qinhua Song Fan Gao Xiaoguo Zhou Jiang Li Jinghua Dai Haihong Sun Quanxin Li Shuqin Yu Xingxiao MA | 2000 | Research on Chemical Intermediates2000，，7： | 1 |
| 16 | Synthesis and characteristics of the C12A7-O ? nanoparticles by citric acid sol–gel combustion method显示文摘 | Lu Gong Zhou Lin Shen Ning Jianqiu Sun Jing Shen Youshifumi Torimoto Quanxin Li | 2010 | Materials Letters2010，，11： | 1 |
| 17 | Ribosome biogenesis gene DEF/UTP25 is essential for liver homeostasis and regeneration显示文摘Hepatocytes are responsible for diverse metabolic activities in a liver. Proper ribosome biogenesis is essential to sustain the function of hepatocytes. There are approximately 200 factors involved in ribosome biogenesis;however, few studies have focused on the role of these factors in maintaining liver homeostasis. The digestive organ expansion factor(def) gene encodes a nucleolar protein Def that participates in ribosome biogenesis. In addition, Def forms a complex with cysteine protease Calpain3(Capn3) and recruits Capn3 to the nucleolus to cleave protein targets. However, the function of Def has not been characterized in the mammalian digestive organs. In this report, we show that conditional knockout of the mouse def gene in hepatocytes causes cell morphology abnormality and constant infiltration of inflammatory cells in the liver. As age increases, the def conditional knockout liver displays multiple tissue damage foci and biliary hyperplasia. Moreover, partial hepatectomy leads to sudden acute death to the def conditional knockout mice and this phenotype is rescued by intragastric injection of the anti-inflammation drug dexamethasone one day before hepatectomy. Our results demonstrate that Def is essential for maintaining the liver homeostasis and liver regeneration capacity in mammals. | Weidong Huang Feng Chen Quanxin Ma Jiaojiao Xin Jiaqi Li Jun Chen Bin Zhou Minli Chen Jun Li Jinrong Peng | 2020 | Science China(Life Sciences)2020，63，11： | 1 |
| 18 | Oscillation Cri-teria for Even - Order Half - Linear Functional Differ-ential Equation with damping显示文摘 | Zhang Quanxin Liu Shouhua Gao Li | 2011 | Applied Mathemat-ics Letters2011，，24： | 1 |
| 19 | Telbivudine Prevents Vertical Transmission of Hepatitis B Virus from Women High Viral Loads: A Prospective Long-term Study显示文摘 | Quanxin Wu Hongfei Huang Xiaowen Sun Meiming Pan Yun He Shun Tan Yi Zeng Li Li Guohong Deng Zehui Yan Dengming He Junnan Li Yuming Wang | 2014 | Clinical Gastroenterology and Hepatology2014，，： | 1 |
| 20 | Oscillation behavior of even-order nonlinear neutral differential equations with variable coefficients显示文摘 | Zhang Quanxin Yan Jurang Gao Li | 2010 | Computers and Mathematics with Applications2010，59，： | 1 |
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