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| 1 | Choice for graphene as conductive additive for cathode of lithium-ion batteries显示文摘Graphene is a promising conductive additive for the lithium-ion batteries(LIBs) and shows great potential especially with its fast development of the large scale fabrication technology. This work has explored the influence of the incorporation of graphenes prepared by three typical methods on the electrochemical performance of the LiCoO_2-based cathode focusing on the choice for the effective graphene as conductive additive for the cathode of LIBs. Through the comparison of the intrinsic characteristics of graphenes and the electrochemical performance of electrodes with graphene, it is found that graphene with low disorder degree and large size is not suitable for LiCoO_2 cathodes as conductive additive. Conversely, the graphene with oxygen functional groups, relatively low surface area and proper size displays much better electrochemical performance when it is used as conductive additive. This work also demonstrates the transmission mechanism for different graphenes as conductive additives in the LiCoO_2 materials, and further reveals that the conductivity of graphene is not the only factor as conductive additives, surface chemistry and sheet size of the graphene are also essential factors which greatly influence the electrochemical performance of electrode. In addition, when combined with Super P, only 1% graphene is enough to construct an efficient conductive network in the electrode. This study also gives a new sight on the practical application of graphene as conductive additive for high performance LIBs. | Ying Shi Lei Wen Songfeng Pei Minjie Wu Feng Li | 2019 | Journal of Energy Chemistry2019，28，3： | 10 |
| 2 | Tribological properties of nanometer cerium oxide as additives in lithium grease显示文摘This paper presents a comparative study of the influence of nanometer-CeO_2(nano-CeO_2) and temperature on tribological and lubricating properties of lithium grease. The morphology and structure of nanocrystals were characterized by means of transmission electron microscopy(TEM) and X-ray diffraction(XRD), respectively. Friction and wear tests were conducted on the friction and wear tester.Results show that the lithium grease with addition of nanometer-CeO_2 has much better friction-reducing and anti-wear performance than that of base grease. When the additive in grease is 0.6 wt%, the friction coefficient(COF) and wear scar diameter(WSD) decrease by 28% and 13% comparing with base grease,respectively. The base grease and grease with 0.6 wt% nanometer-CeO_2 both possess the lowest average COF and wear width at 50 ℃. The worn surface morphology after friction test was analyzed by scanning electron microscopy(SEM) and NANOVEA three-dimensional profilometer. Under the lubrication of the lithium grease containing 0.6 wt% nano-CeO_2. few shallow furrows can be observed on the quite smoothed surface and the WSD decreased. Moreover, It was found that the nano-CeO_2 has been incorporated into the surface protective and lubricious layer by energy dispersive spectrometer(EDS) analysis. | Qiang He Anling Li Yachen Guo Songfeng Liu Yong Zhang Linghao Kong | 2018 | Journal of Rare Earths2018，36，2： | 6 |
| 3 | Carbon emission trading system of China: a linked market vs. separated markets显示文摘中国政府打算升级它在 2015 交换飞行员到一个全国性的计划的当前的省的碳排放。这研究调查二种情形:分开的省的市场和一个连接内部省的市场。分开并且连接的市场的碳消退效果基于一个可计算出来的一般平衡模型用湖北和广东的二个飞行员省被比较称为的 Sino-TERMCo2。模拟结果证明连接市场能与分开的市场相比为国家以及为湖北广东团体改进社会福利和还原剂碳排放紧张。然而,联合系统也更不均匀的散布福利并且因此增加社会不公正。在政策地面上,当前的结果建议与足够的福利转移政策补充的一个构造得好的、全国性的碳市场能被采用代替当前的自顶向下的消退目标崩溃实践。 | Yu LIU Shenghao FENG Songfeng Yaxiong ZHANG Xiang ZHOU Yanbin CHEN Zhanming CHEN | 2013 | Frontiers of Earth Science2013，7，4： | 5 |
| 4 | Speedup in adiabatic evolution based quantum algorithms显示文摘In this context,we study three different strategies to improve the time complexity of the widely used adiabatic evolution algorithms when solving a particular class of quantum search problems where both the initial and final Hamiltonians are one-dimensional projector Hamiltonians on the corresponding ground state.After some simple analysis,we find the time complexity improvement is always accompanied by the increase of some other 'complexities' that should be considered.But this just gives the implication that more feasibilities can be achieved in adiabatic evolution based quantum algorithms over the circuit model,even though the equivalence between the two has been shown.In addition,we also give a rough comparison between these different models for the speedup of the problem. | SUN Jie LU SongFeng LIU Fang | 2012 | Science China(Physics,Mechanics & Astronomy)2012，55，9： | 5 |
| 5 | Assessing IGS GPS/Galileo/BDS-2/BDS-3 phase bias products with PRIDE PPP-AR显示文摘Ambiguity Resolution in Precise Point Positioning (PPP-AR) is important to achieving high-precision positioning in wide areas. The International GNSS (Global Navigation Satellite System) Service (IGS) and some other academic organizations have begun to provide phase bias products to enable PPP-AR, such as the integer-clock like products by Centre National d’Etudes Spatials (CNES), Wuhan University (WUM) and the Center for Orbit Determination in Europe (CODE), as well as the Uncalibrated Phase Delay (UPD) products by School of Geodesy and Geomatics (SGG). To evaluate these disparate products, we carry out Global Positioning System (GPS)/Galileo Navigation Satellite System (Galileo) and BeiDou Navigation Satellite System (BDS-only) PPP-AR using 30 days of data in 2019. In general, over 70% and 80% of GPS and Galileo ambiguity residuals after wide-lane phase bias corrections fall in ± 0.1 cycles, in contrast to less than 50% for BeiDou Navigation Satellite (Regional) System (BDS-2);moreover, around 90% of GPS/Galileo narrow-lane ambiguity residuals are within ± 0.1 cycles, while the percentage drops to about 55% in the case of BDS products. GPS/Galileo daily PPP-AR can usually achieve a positioning precision of 2, 2 and 6 mm for the east, north and up components, respectively, for all phase bias products except those based on German Research Centre for Geosciences (GBM) rapid satellite orbits and clocks. Due to the insufficient number of BDS satellites during 2019, the BDS phase bias products perform worse than the GPS/Galileo products in terms of ambiguity fixing rates and daily positioning precisions. BDS-2 daily positions can only reach a precision of about 10 mm in the horizontal and 20 mm in the vertical components, which can be slightly improved after PPP-AR. However, for the year of 2020, BDS-2/BDS-3 (BDS-3 Navigation Satellite System) PPP-AR achieves about 50% better precisions for all three coordinate components. | Jianghui Geng Songfeng Yang Jiang Guo | 2021 | Satellite Navigation2021，2，1： | 3 |
| 6 | Unraveling the core functional bacteria and their succession throughout three fermentation stages of broad bean paste with chili显示文摘The entire fermentation process of traditional Chinese broad bean paste with chili comprises three individual stages:Tianbanzi,chili pei,and paste fermentation(Tianbanzi-chili pei mixture).Three stages share average 77.53%of all bacteria(89 genera),indicating that the similar environment leads to the similar bacterial communities.One,one,and three genera are exclusive to Tianbanzi,chili pei,and paste stages,respectively,due to the special physical and chemical properties for each stage.Total acidity,pH,and NaCl are important endogenous factors that promote the succession of bacterial communities.According to the dynamics of organic acids,reducing sugars,amino acids,and volatile compounds,60-,210-,and 180-day are considered the best fermentation periods for Tianbanzi,chili pei,and paste,respectively,to balance time cost and product quality.Three(Tetragenococcus,Lactobacillus,and Pseudomonas),four(Tetragenococcus,Lactobacillus,Bacillus,and Pseudomonas),and five(Tetragenococcus,Lactobacillus,Bacillus,Pseudomonas,and Pediococcus)genera are considered the core functional bacteria of Tianbanzi,chili pei,and paste fermentation,respectively. | Songfeng Yu Jia Song Tao Hu Jun Wang Xiaojing Liu Yu Zheng Lei Shi Shoupeng Wan Min Wang | 2022 | Food Science and Human Wellness2022，11，4： | 2 |
| 7 | Proper animal experimental designs for preclinical research of biomaterials for intervertebral disc regeneration显示文摘Low back pain is a vital musculoskeletal disease that impairs life quality,leads to disability and imposes heavy economic burden on the society,while it is greatly attributed to intervertebral disc degeneration(IDD).However,the existing treatments,such as medicines,chiropractic adjustments and surgery,cannot achieve ideal disc regeneration.Therefore,advanced bioactive therapies are implemented,including stem cells delivery,bioreagents administration,and implantation of biomaterials etc.Among these researches,few reported unsatisfying regenerative outcomes.However,these advanced therapies have barely achieved successful clinical translation.The main reason for the inconsistency between satisfying preclinical results and poor clinical translation may largely rely on the animal models that cannot actually simulate the human disc degeneration.The inappropriate animal model also leads to difficulties in comparing the efficacies among biomaterials in different reaches.Therefore,animal models that better simulate the clinical charateristics of human IDD should be acknowledged.In addition,in vivo regenerative outcomes should be carefully evaluated to obtain robust results.Nevertheless,many researches neglect certain critical characteristics,such as adhesive properties for biomaterials blocking annulus fibrosus defects and hyperalgesia that is closely related to the clinical manifestations,e.g,low back pain.Herein,in this review,we summarized the animal models established for IDD,and highlighted the proper models and parameters that may result in acknowledged IDD models.Then,we discussed the existing biomaterials for disc regeneration and the characteristics that should be considered for regenerating different parts of discs.Finally,well-established assays and parameters for in vivo disc regeneration are explored. | Yizhong Peng Xiangcheng Qing Hongyang Shu Shuo Tian Wenbo Yang Songfeng Chen Hui Lin Xiao Lv Lei Zhao Xi Chen Feifei Pu Donghua Huang Xu Cao Zengwu Shao | 2021 | Biomaterials Translational2021，2，2： | 2 |
| 8 | Unsupervised clustering based reduced support vector machines显示文摘 | Zheng Songfeng Lu Xiaofeng Zheng Nanning | 2003 | IEEE Digital Object Identifier2003，2，： | 1 |
| 9 | Degradation mechanism analysis of LiNi_(0.5)Co_(0.2)Mn_(0.3)O_(2) single crystal cathode materials through machine learning显示文摘LiNi_(0.5)Co_(0.2)Mn_(0.3)O_(2)(NCM523)has become one of the most popular cathode materials for current lithium-ion batteries due to its high-energy density and cost performance.However,the rapid capacity fading of NCM severely hinders its development and applications.Here,the single crystal NCM523 materials under different degradation states are characterized using scanning transmission electron microscopy(STEM).Then we developed a neural network model with a two-sequential attention block to recognize the crystal structure and locate defects in STEM images.The number of point defects in NCM523 is observed to experience a trend of increasing first and then decreasing in the degradation process.The space between the transition metal columns shrinks obviously,inducing dramatic capacity decay.This analysis sheds light on the defect evolution and chemical transformation correlated with layered material degradation.It also provides interesting hints for researchers to regenerate the electrochemical capacity and design better battery materials with longer life. | Wuxin Sha Yaqing Guo Danpeng Cheng Qigao Han Ping Lou Minyuan Guan Shun Tang Xinfang Zhang Songfeng Lu Shijie Cheng Yuan-Cheng Cao | 2022 | npj Computational Materials2022，，1： | 1 |
| 10 | Mining Association Rules Using Clustering显示文摘 | Liu Fang Lu Zhengding Lu Songfeng | 2001 | Intelligent Data AnMysis2001，5，4： | 1 |
| 11 | Influence of CYP3A5 gene polymorphisms of donor rather than recipient to tacrolimus individual dose requirement in liver transplantation 显示文摘 | Songfeng Y Lihua W Jing J | 2006 | Transplantation2006，81，1： | 1 |
| 12 | Mining Association Rules using Clustering显示文摘 | Liu Fang Lu Zhengding Lu Songfeng | 2001 | Intelligent Data Analysis2001，5，4： | 1 |
| 13 | Heparin inhibits burn-induced spleen cell apoptosis by suppressing interleukin-1 expression显示文摘 | Zhao Songfeng Zhang Xiao Zhang Xiaojian Shi Xiuqin Yu Zujiang Kan Quancheng | 2014 | Chinese Medical Journal2014，，13： | 1 |
| 14 | Direct re-duction of graphene oxide films into highly conductive andfiexible graphene films by hydrohalic acids 显示文摘 | Pei Songfeng Zhao J inping Du Jinhong | 2010 | Carbon2010，48，15： | 1 |
| 15 | Image denoising with anisotropic bivariate shrinkage 显示文摘 | Yin Songfeng Cao Liangcai Ling Yongshun | 2011 | Signal Processing2011，91，1： | 1 |
| 16 | The research of infrared image segmentation based on mathematical morphology显示文摘 | Wang Yicheng Yin Songfeng Wu Xiaodi | | 0，，： | 1 |
| 17 | Investigation on the thermal conductivity of HDPE/MWCNT composites by laser pulse method显示文摘Thermal conductivity (TC) of high density polyethylene/multiwall carbon nanotube (HDPE/MWCNT) composite films was measured by laser pulse method. It is found that the TC increased quickly with the increase of MWCNT fraction when the volume fraction of MWCNT was below 3.35%. However,as the volume fraction of MWCNT was over 3.35%,the increasing rate became slow. A new percolation model was proposed based on the effect of MWCNT network to simulate the TC of HDPE/MWCNT composite films. The simulation result was in good agreement the experimental data well. In addition,the relationship of TC with the increase of temperature was also discussed. | CHEN XinGui HE GuanHu DU JinHong PEI SongFeng GUO JingDong | 2009 | Science China(Technological Sciences)2009，52，9： | 1 |
| 18 | A maximum flow algorithm for buffer-limited delay tolerant networks显示文摘Deep space networks,satellite networks,ad hoc networks,and the Internet can be modeled as DTNs(Delay Tolerant Networks).As a fundamental problem,the maximum flow problem is of vital importance for routing and service scheduling in networks.However,there exists no permanent end-to-end path since the topology and the characteristics of links are time-variant,resulting in a crucial maximum flow problem in DTNs.In this paper,we focus on the single-source-single-sink maximum flow problem of buffer-limited DTNs,followed by a valid algorithm to solve it.First,the BTAG(Buffer-limited Time Aggregated Graph)is constructed for modeling the buffer-limited DTN.Then,on the basis of BTAG,the two-way cache transfer series and the relevant transfer rules are designed,and thus a BTAG-based maximum flow algorithm is proposed to solve the maximum flow problem in buffer-limited DTNs.Finally,a numerical example is given to demonstrate the effectiveness of the proposed algorithm. | Tao Zhang Songfeng Deng Hongyan Li Ronghui Hou Haichao Zhang | 2017 | Journal of Communications and Information Networks2017，2，3： | 1 |
| 19 | A graphene-pure-sulfur sandwich structure for ultra fast , long-life lithium-sulfur batteries显示文摘 | ZHOU Guangmin PEI Songfeng LI Lu | 2014 | Advanced Materials2014，26，4： | 1 |
| 20 | Decellularized Disc Hydrogels for hBMSCs tissue-specific differentiation and tissue regeneration显示文摘Tissue specificity,a key factor in the decellularized tissue matrix(DTM),has shown bioactive functionalities in tuning cell fate-e.g.,the differentiation of mesenchymal stem cells.Notably,cell fate is also determined by the living microenvironment,including material composition and spatial characteristics.Herein,two neighboring tissues within intervertebral discs,the nucleus pulposus(NP)and annulus fibrosus(AF),were carefully processed into DTM hydrogels(abbreviated DNP-G and DAF-G,respectively)to determine the tissue-specific effects on stem cell fate,such as specific components and different culturing methods,as well as in vivo regeneration.Distinct differences in their protein compositions were identified by proteomic analysis.Interestingly,the fate of human bone marrow mesenchymal stem cells(hBMSCs)also responds to both culturing methods and composition.Generally,hBMSCs cultured with DNP-G(3D)differentiated into NP-like cells,while hBMSCs cultured with DAF-G(2D)underwent AF-like differentiation,indicating a close correlation with the native microenvironments of NP and AF cells,respectively.Furthermore,we found that the integrin-mediated RhoA/LATS/YAP1 signaling pathway was activated in DAF-G(2D)-induced AF-specific differentiation.Additionally,the activation of YAP1 determined the tendency of NP-or AF-specific differentiation and played opposite regulatory effects.Finally,DNP-G and DAF-G specifically promoted tissue regeneration in NP degeneration and AF defect rat models,respectively.In conclusion,DNP-G and DAF-G can specifically determine the fate of stem cells through the integrin-mediated RhoA/LATS/YAP1 signaling pathway,and this tissue specificity is both compositional and spatial,supporting the utilization of tissue-specific DTM in advanced treatments of intervertebral disc degeneration. | Yizhong Peng Xiangcheng Qing Hui Lin Donghua Huang Jinye Li Shuo Tian Sheng Liu Xiao Lv Kaige Ma Rui Li Zilong Rao Ying Bai Songfeng Chen Ming Lei Daping Quan Zengwu Shao | 2021 | Bioactive Materials2021，6，10： | 1 |
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