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| 1 | Prediction on grinding force during grinding powder metallurgy nickel-based superalloy FGH96 with electroplated CBN abrasive wheel显示文摘In this article,a grinding force model,which is on the basis of cutting process of single abrasive grains combined with the method of theoretical derivation and empirical formula by analyzing the formation mechanism of grinding force,was established.Three key factors have been taken into accounts in this model,such as the contact friction force between abrasive grains and materials,the plastic deformation of material in the process of abrasive plowing,and the shear strain effect of material during the process of cutting chips formation.The model was finally validated by the orthogonal grinding experiment of powder metallurgy nickel-based superalloy FGH96 by using the electroplated CBN abrasive wheel.Grinding force values of prediction and experiment were in good consistency.The errors of tangential grinding force and normal grinding force were 9.8%and 13.6%,respectively.The contributions of sliding force,plowing force and chip formation force were also analyzed.In addition,the tangential forces of sliding,plowing and chip formation are 14%,19%and 11%of the normal forces on average,respectively.The pro-posed grinding forcemodel is not only in favor of optimizing the grinding parameters and improving grinding efficiency,but also contributes to study some other grinding subjects(e.g.abrasive wheel wear,grinding heat,residual stress). | Benkai LI Chenwei DAI Wenfeng DING Changyong YANG Changhe LI Olga KULIK Vyacheslav SHUMYACHER | 2021 | Chinese Journal of Aeronautics2021，34，8： | 10 |
| 2 | VO2·0.2H2O nanocuboids anchored onto graphene sheets as the cathode material for ultrahigh capacity aqueous zinc ion batteries显示文摘Aqueous Zinc-ion batteries(ZIBs),using zinc negative electrode and aqueous electrolyte,have attracted great attention in energy storage field due to the reliable safety and low-cost.A composite material comprised of VO2·0.2H2O nanocuboids anchored on graphene sheets(VOG)is synthesized through a facile and efficient microwave-assisted solvothermal strategy and is used as aqueous ZIBs cathode material.Owing to the synergistic effects between the high conductivity of graphene sheets and the desirable structural features of VO2·0.2H2O nanocuboids,the VOG electrode has excellent electronic and ionic transport ability,resulting in superior Zn ions storage performance.The Zn/VOG system delivers ultrahigh specific capacity of 423 mAh·g^−1 at 0.25 A·g^−1 and exhibits good cycling stability of up to 1,000 cycles at 8 A·g^−1 with 87%capacity retention.Systematical structural and elemental characterizations confirm that the interlayer space of VO2·0.2H2O nanocuboids can adapt to the reversible Zn ions insertion/extraction.The as-prepared VOG composite is a promising cathode material with remarkable electrochemical performance for low-cost and safe aqueous rechargeable ZIBs. | Dedong Jia Kun Zheng Ming Song Hua Tan Aitang Zhang Lihua Wang Lijun Yue Da Li Chenwei Li Jingquan Liu | 2020 | Nano Research2020，13，1： | 6 |
| 3 | Comparative study of carbonic anhydrase activity in waters among different geological eco-environments of Yangtze River basin and its ecological significance显示文摘This study provides the presence of carbonic anhydrase(CA) activity in waters of the Yangtze River basin, China, as well as the correlation of CA activity with HCO-3 concentration and CO_2 sink flux. Different degrees of CA activity could be detected in almost all of the water samples from different geological eco-environments in all four seasons. The CA activity of water samples from karst areas was significantly higher than from non-karst areas(PP3-concentration(r = 0.672, P2 sink flux(r = 0.602, P = 0.076) in karst areas. This suggests that CA in waters might have a promoting effect on carbon sinks for atmospheric CO_2 in karst river basins. In conditions of similar geological type, higher CA activity was generally detected in water samples taken from areas that exhibited better eco-environments, implying that the CA activity index of waters could be used as an indicator for monitoring ecological environments and protection of river basins. These findings suggest that the role of CA in waters in the karst carbon sink potential of river basins is worthy of further in-depth studies. | Sila Onesmus Nzung'a Weizhi Pan Taiming Shen Wei Li Xiaoqun Qin Chenwei Wang Liankai Zhang Longjiang Yu | 2018 | Journal of Environmental Sciences2018，30，4： | 3 |
| 4 | c-Met Is a Marker of Pancreatic Cancer Stem Cells and Therapeutic Target显示文摘 | Chenwei Li Jing–Jiang Wu Mark Hynes Joseph Dosch Bedabrata Sarkar Theodore H. Welling Marina Pasca di Magliano Diane M. Simeone | 2011 | Gastroenterology2011，，6： | 3 |
| 5 | Simulation of Moon-based Earth observation optical image processing methods for global change study显示文摘Global change affected by multiple factors,the consequences of which continue to be far-reaching,has the characteristics of large spatial scale and long-time scale.The demand for Earth observation technology has been increasing for large-scale simultaneoiis observations and stable global observation over the long-term.A Moon-based observation platform,which uses sensors on the nearside lunar surface,is considered a reasonable solution.However,owing to a lack of appropriate processing methods for optical sensor data,global change study using this platform is not sufficient.This paper proposes two optical sensor imaging processing methods for the Moon-based platform:area imaging processing method(AIPM)and global imaging processing method(GIPM),primarily considering global change characteristics,optical sensor performance,and motion law of the Moon-based platform.First,the study proposes a simulation theory which includes the construction of a Moon-Sun elevation angle model and a global image mosaicking method.Then,coverage images of both image processing methods are simulated,and their features are quantitatively analyzed.Finally,potential applications are discussed.Results show that AEPM,whose coverage is mainly affected by lunar revolution,is approximately between 0%and 50%with a period of 29.5 days,which can help the study of large-scale instant change phenomena.GIPM,whose coverage is affected by Earth revolution,is conducive to the study of long term global-scale phenomena because of its sustained stable observation from 67°N-67°S on the Earth.AIPM and GIPM have great advantages in Earth observation of tripolar regions.The existence of top of the atmosphere(TOA)albedo balance line is verified from the GIPM perspective.These two imaging methods play a significant role in linking observations acquired from the Moon-based platform to Earth large-scale geoscience phenomena,and thus lay a foundation for using this platform to capture global environmental changes and new discoveries. | Tong LI Huadong GUO Li ZHANG Chenwei NIE Jingjuan LIAO Guang LIU | 2020 | Frontiers of Earth Science2020，14，1： | 2 |
| 6 | Bio-inspired Superhydrophobic Coating with Low Hydrate Adhesion for Hydrate Mitigation显示文摘In this paper,we fabricate a biomimetic superhydrophobic coating on an X90 pipeline steel substrate by electrodeposition of copper,hydrothermal treatment to form a copper oxide layer,and subsequent surface modification with Stearic Acid(SA).The coating exhibits static contact angles of water of 160°±-3.1°in the air and 170.7°±2.5°in cyclopentane,indicating the strongly water-repelling nature of the coating.The morphologies of the cyclopentane hydrate formed on steel substrates with and without the superhydrophobic coating are investigated.The results show that the hydrate particle on the coating exhibits spherical morphology and herein the interfacial contact area and adhesion force to the solid surface can be essentially reduced.The adhesion force reduction may be resulted by the decrease in the contact area between the hydrate and the solid surface. | Sanbao Dong Mingzhong Li Chenwei Liu Jie Zhang Gang Chen | 2020 | Journal of Bionic Engineering2020，17，5： | 2 |
| 7 | Identification of Pancreatic Cancer Stem Cells 显示文摘 | Chenwei Li David G Heidt | 2007 | Cancer Res2007，67，3： | 1 |
| 8 | New cyclopiane diterpenes with anti-inflammatory activity from the sea sediment-derived fungus Penicillium sp.TJ403-2显示文摘Three new rare cyclopiane diterpenes(1-3),together with thirteen known compounds(4-16),were isolated and identified from a sea sediment-derived fungus Penicillium sp.TJ403-2.The planar and relative structures of compounds 1-3 were elucidated by HRESIMS,one-and two-dimensional NMR analyses,and their absolute configurations were further established by X-ray crystallography experiment.Compounds 1-3 were evaluated for the anti-inflammatory activity against LPS-induced NO production,and compound 1 showed notable inhibitory potency with an IC50 value of2.19±0.25μmol/L,which was three fold lower than the positive control indomethacin(IC50=8.76±0.92μmol/L).Further Western blot and immunofluorescence experiments demonstrated its mechanism of action to be that 1 inhibited the NF-κB-activated pathway,highlighting it as a promising starting point for the development of new anti-inflammatory agents. | Fengli Li Weiguang Sun Sitian Zhang Weixi Gao Shuang Lin Beiye Yang Chenwei Chai Huaqiang Li Jianping Wang Zhengxi Hu Yonghui Zhang | 2020 | Chinese Chemical Letters2020，31，1： | 1 |
| 9 | Surface nanobubbles on the hydrophobic surface and their implication to flotation显示文摘Nanobubbles play a potential role in the application of the flotation of fine particles.In this work,the identification of nanoentities was performed with a contact mode atomic force microscope(AFM).Moreover,the influences of setpoint ratio and amplitude of the cantilever and the responses of the formed surface nanobubbles to the fluctuation of pH,salt concentration,and surfactant concentration in the slurry were respectively studied.Nanobubbles were reported on the highly oriented pyrolytic graphite(HOPG)surface as the HOPG was immersed in de-ionized water under ambient temperature.The coalescence of nanobubbles occurred under contact mode,which provides strong evidence of the gaseous nature of these nanostructures on HOPG.The measuring height of the surface nanobubbles decreased with the setpoint ratio.The changes in the pH and concentration of methyl isobutyl carbinol(MIBC)show a negligible influence on the lateral size and height of the preex-isting surface nanobubbles.The addition of LiCl results in a negligible change of the lateral size;however,an obvious change is noticed in the height of surface nanobubbles.The results are expected to provide a valuable reference in understanding the properties of surface nanobubbles and in the design of nanobubble-assisted flotation processes. | Chenwei Li Danlong Li Xin Li Ming Xu Haijun Zhang | 2022 | International Journal of Minerals,Metallurgy and Materials2022，29，8： | 1 |
| 10 | Human Pancreatic Cancer Stem Cells: Implications for How We Treat Pancreatic Cancer显示文摘 | Cheong J. Lee Chenwei Li Diane M. Simeone | 2008 | Translational Oncology2008，，： | 1 |
| 11 | Preparation and Characterization of Nanocrystalline Cellulose/Poly(lactic acid) Composite Membranes显示文摘Nanocrystalline cellulose(NCC)/poly(lactic acid)(PLLA) composite membranes were prepared by the solution casting method.Physical and chemical modifications were performed to improve the compatibility of NCC and PLLA.The results indicated that the NCC dispersibility of the composite membranes with chemical modification were superior to that of the composite membranes with physical modification.Moreover,the chemical modification NCC not only had a large effect on the nucleation and growth of the crystals,but also affected the crystal forms of PLLA.This was because chemical reactions took place between the silicone of silane coupling agent(KH-570) and the hydroxyl groups of NCC during blending.The chemical modification NCC could be dispersed stably in the PLLA matrix,and it played the role of a nucleating agent. | MeiChun Ding ChenWei Li FuShan Chen | 2017 | Paper And Biomaterials2017，2，3： | 1 |
| 12 | Adversarial Attacks on License Plate Recognition Systems显示文摘The license plate recognition system(LPRS)has been widely adopted in daily life due to its efficiency and high accuracy.Deep neural networks are commonly used in the LPRS to improve the recognition accuracy.However,researchers have found that deep neural networks have their own security problems that may lead to unexpected results.Specifically,they can be easily attacked by the adversarial examples that are generated by adding small perturbations to the original images,resulting in incorrect license plate recognition.There are some classic methods to generate adversarial examples,but they cannot be adopted on LPRS directly.In this paper,we modify some classic methods to generate adversarial examples that could mislead the LPRS.We conduct extensive evaluations on the HyperLPR system and the results show that the system could be easily attacked by such adversarial examples.In addition,we show that the generated images could also attack the black-box systems;we show some examples that the Baidu LPR system also makes incorrect recognitions.We hope this paper could help improve the LPRS by realizing the existence of such adversarial attacks. | Zhaoquan Gu Yu Su Chenwei Liu Yinyu Lyu Yunxiang Jian Hao Li Zhen Cao Le Wang | 2020 | Computers, Materials & Continua2020，，11： | 1 |
| 13 | High-level production of a thermoacidophilic β -glucosidase from Penicillium citrinum YS40-5 by solid-state fermentation with rice bran显示文摘 | NG I S LI Chenwei CHAN Shuangpi | 2010 | Bioresource Technology2010，101，4： | 1 |
| 14 | Characteristics of Liver Functions in Patients With COVID-19 and Construction of a Prognostic Evaluation Decision Model Based on Liver Functions显示文摘A number of studies have suggested that coronavirus disease 2019(COVID-19)can cause liver damage.However,clinical features and outcome of COVID-19 in patients with liver injury remain to be further investigated.In this study,the clinical data of 265 COVID-19 patients admitted to seven tertiary hospitals were collected.Based on a threshold for transaminase or total bilirubin levels at two times the normal upper limit,patients were divided into mild or moderate/severe liver injury groups.Among the 265 patients,183 patients showed liver injury within 48 hours of admission.Aspartate aminotransferase levels were predominantly elevated in the liver injury group,but albumin levels were reduced.Moreover,fibrinogen and D-dimer were significantly increased.Furthermore,68%of the patients with moderate/severe liver injury had one or more underlying diseases.Almost half of these patients developed acute respiratory distress syndrome(44%)and secondary infections(46%).These patients showed increased interleukin-6 and interleukin-10 levels and a decrease in PaO2 and the oxygenation index.In addition,levels of alanine aminotransferase,aspartate aminotransferase,and albumin were correlated with the oxygenation index,D-dimer and lymphocyte counts.Furthermore,a novel prognostic assessment model based on liver function was established,which accuracy reached 88%and was able to accurately assess the prognosis of COVID-19 patients. | Tongtong Pan Dazhi Chen Chenwei Pan Yi Kang Junping Liu Feifei Su Liang Hong Huili Li Hui Zhao Zhuo Lin Xiaodong Wang Hongwei Lin Qianjing Du Chao Cai Yongping Chen | 2020 | Infectious Microbes & Diseases2020，2，4： | 1 |
| 15 | Drug adulteration analysis based on complexation with cyclodextrin and metal ions using ion mobility spectrometry显示文摘Drug adulteration and contamination are serious threats to human health therefore,their accurate monitoring is very important.Allopurinol(Alp)and theophylline(Thp)are commonly used drugs for the treatment of gout and bronchitis,while their isomers hypoxanthine(Hyt)and theobromine(Thm)have no effect and affect the efficacy of the drug.In this work,the drug isomers of Alp/Hyt and Thp/Thm are simply mixed withα-,β-,γ-cyclodextrin(CD)and metal ions and separated using trapped ion mobility spectrometry-mass spectrometry(TIMS-MS).TIMS-MS results showed that Alp/Hyt and Thp/Thm isomers could interact with CD and metal ions and form corresponding binary or ternary complexes to achieve their TIMS separation.Different metal ions and CDs showed different separation effect for the isomers,among which Alp and Hyt could be successfully distinguished from the complexes of[Alp/Hyt+γ-CD+Cu–H]^(+)with separation resolution(RP–P)of 1.51;whereas Thp and Thm could be baseline separated by[Thp/Thm+γ-CD+Ca–H]^(+)with RP–P of 1.96.Besides,chemical calculations revealed that the complexes were in the inclusion forms,and microscopic interactions were somewhat different,making their mobility separation.Moreover,relative and absolute quantification was investigated with an internal standard to determine the precise isomers content,and good linearity(R^(2)>0.99)was obtained.Finally,the method was applied for the adulteration detection where different drugs and urine were analyzed.In addition,due to the advantages of fast speed,simple operation,high sensitivity,and no chromatographic separation required,the proposed method provides an effective strategy for the drug adulteration detection of isomers. | Zhigang Liang Huanhuan Wang Fangling Wu Longfei Wang Chenwei Li Chuan-Fan Ding | 2023 | Journal of Pharmaceutical Analysis2023，13，3： | 0 |
| 16 | Newly Discovered Ca. 163 Ma OIB-Type Diabase Dike from the Shiquanhe Ophiolites, Western Tibet显示文摘Objective The Shiquanhe ophiolite is an important tectonic belt in western Tibet.It has been debated whether the Shiquanhe ophiolite represents an allochthonous nappe derived from the Bangong-Nujiang suture zone to the north or the autochthonous remnants of a different oceanic crust (e.g.,Wu Zhenhan et al.,2016).Geochemical and geochronological studies of ophiolitic components are critical to understand evolutionary history of the Shiquanhe ophiolite and to resolve the controversy.This paper reports,for the first time,the late Middle Jurassic oceanic island basalt-type (OIB-type)diabase dike in the Shiquanhe ophiolite.The diabase is an important supplement to the knowledge of the petrologic assemblage of the Shiquanhe ophiolite and provides constraints on its evolutionary history. | LI Chenwei LI Zhijun CAO Hui ZENG Min | 2018 | Acta Geologica Sinica(English Edition)2018，92，6： | 0 |
| 17 | Visualizing the role of applied voltage in non-metal electrocatalysts显示文摘Understanding how applied voltage drives the electrocatalytic reaction at the nanoscale is a fundamental scientific problem,particularly in non-metallic electrocatalysts,due to their low intrinsic carrier concentration.Herein,using monolayer molybdenum disulfide(MoS_(2))as a model system of non-metallic catalyst,the potential drops across the basal plane of MoS_(2)(△V_(sem))and the electric double layer(△V_(edl))are decoupled quantitatively as a function of applied voltage through in-situ surface potential microscopy.We visualize the evolution of the band structure under liquid conditions and clarify the process of EF keeping moving deep into Ec,revealing the formation process of the electrolyte gating effect.Additionally,electron transfer(ET)imaging reveals that the basal plane exhibits high ET activity,consistent with the results of surface potential measurements.The potential-dependent behavior of kf and ns in the ET reaction are further decoupled based on the measurements of△V_(sem)and△V_(edl).Comparing the ET and hydrogen evolution reaction imaging results suggests that the low electrocatalytic activity of the basal plane is mainly due to the absence of active sites,rather than its electron transfer ability.This study fills an experimental gap in exploring driving forces for electrocatalysis at the nanoscale and addresses the long-standing issue of the inability to decouple charge transfer from catalytic processes. | Ziyuan Wang Jun Chen Chenwei Ni Wei Nie Dongfeng Li Na Ta Deyun Zhang Yimeng Sun Fusai Sun Qian Li Yuran Li Ruotian Chen Tiankai Bu Fengtao Fan Can Li | 2023 | National Science Review2023，10，9： | 0 |
| 18 | Wuhan assists Xian显示文摘The Zall Foundation raised more than RMB 500,000 worth of epidemic prevention and daily supplies,which arrived in Xi an on Dec.25,2021.Guide Infrared also donated 60,000 medical masks and 1,500 bottles of disinfectant gel to three Xi'an universities,namely Xi'an Jiaotong University,Northwestermn Polytechnical University and Xidian University. | Wen Tao Liu Chenwei Li Yuying Hao Tianjiao | 2022 | Changjiang Weekly2022，，1： | 0 |
| 19 | A novel temperature-compensation method based on correlation analysis for multi-FOG INS显示文摘Aimed at improving the bias stability of Fiber-Optic Gyroscope(FOG)-based inertial navigation systems in environments of various ambient temperatures,a novel temperaturecompensation method based on a correlation analysis of the same batch of FOGs is proposed.The empirical mode decomposition method was employed to filter the high-frequency noises of the FOGs.Then,the correlation information of the multiple FOGs was used to analyze the feasibility of the method.Eventually,the same residual error of the FOGs was compensated via the simple piecewise linear models.The experimental results indicate that excellent compensation effects for both high-and low-accuracy FOGs are achieved using the proposed method.Specifically,the accuracies of high-accuracy FOGs are improved by approximately 33.9%,20%,and 31.2%,while those of low-accuracy FOGs are improved by approximately 39.1%,20.8%,and 26.1%.The method exhibits the merits of simplicity,validity,and stability,and thus is expected to be widely used in engineering applications. | Longjie TIAN Yanxiong NIU Chenwei HUANG Haoyang LI Yang PANG Yanqiang YANG | 2023 | Chinese Journal of Aeronautics2023，36，6： | 0 |
| 20 | Reactive ball-milling synthesis of Co-Fe bimetallic catalyst for efficient hydrogenation of carbon dioxide to value-added hydrocarbons显示文摘Catalytic hydrogenation of CO_(2) using renewable hydrogen not only reduces greenhouse gas emissions,but also provides industrial chemicals.Herein,a Co-Fe bimetallic catalyst was developed by a facile reactive ball-milling method for highly active and selective hydrogenation of CO_(2) to value-added hydrocarbons.When reacted at 320℃,1.0 MPa and 9600 mL h^(-1) g_(cat)^(-1),the selectivity to light olefin(C_(2)^(=)-C_(4)^(=)) and C_(5)+ species achieves 57.3% and 22.3%,respectively,at a CO_(2) co nversion of 31.4%,which is superior to previous Fe-based catalysts.The CO_(2) activation can be promoted by the CoFe phase formed by reactive ball milling of the Fe-Co_(3)O_(4) mixture,and the in-situ Co_(2)C and Fe_(5)C_(2) formed during hydrogenation are beneficial for the C-C coupling reaction.The initial C-C coupling is related to the combination of CO species with the surface carbon of Fe/Co carbides,and the sustained C-C coupling is maintained by self-recovery of defective carbides.This new strategy contributes to the development of efficient catalysts for the hydrogenation of CO_(2) to value-added hydrocarbons. | Haipeng Chen Chenwei Wang Mengyang Zheng Chenlei Liu Wenqiang Li Qingfeng Yang Shixue Zhou Xun Feng | 2023 | Journal of Energy Chemistry2023，，9： | 0 |
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