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| 1 | A review on thermal conductivity of magnesium and its alloys显示文摘This review summarizes recent researching works the thermal conductivity of Mg–Zn,Mg–Al,Mg–Mn and Mg–RE alloys.Solute atoms,heat treatment,deformation and temperature,which have significant influence on the thermal conductivity of magnesium alloys,are highlighted.For an individual solute atom,its effects on thermal conductivity are highly dependent on its chemical valence,radius and extra-nuclear electrons.The thermal conductivity of Mg alloys is decreased by solution treatment,but improved by aging and/or annealing treatments.As for the deformed Mg alloys,the thermal conductivity along transverse or normal direction is superior to that of along extrusion or rolling direction.We expect this review is helpful for those who are working on developing Mg alloys with superior thermal conductivity.©2020 Published by Elsevier B.V.on behalf of Chongqing University. | Shubo Li Xinyu Yang Jiangtao Hou Wenbo Du | 2020 | Journal of Magnesium and Alloys2020，8，1： | 18 |
| 2 | Icosahedral quasicrystalline phase in an as-cast Mg-Zn-Er alloy显示文摘The microstructure of an as-cast Mg-Zn-Er alloy was investigated through scanning electron microscopy (SEM) and transmission electron microscopy (TEM) equipped with energy dispersive spectroscopy (EDS). The results indicate that two different second phases, one with eutectoid-lamellar morphology and the other with granular shape, distribute in the α-Mg matrix. The coexistence of the face-centered icosahedral quasicrystalline phase (I-phase) and W-phase with the face-centered cubic structure is found in the as-cast alloy. The coexistence of I-phase and W-phase in the Mg-Zn-Er alloy is because the W-phase is the primary phase and the I-phase forms by peritectic reaction during solidification. | LI Jianhui DU Wenbo LI Shubo WANG Zhaohui | 2009 | Rare Metals2009，28，3： | 13 |
| 3 | Effect of microstructure evolution on mechanical property of extruded Mg-12Gd-2Er-1Zn-0.6Zr alloys显示文摘The microstructure evolution of as-cast,as-extruded and peak-aged Mg-12Gd-2Er-1Zn-0.6Zr alloys were investigated by Optical Microscope(OM),X-ray Diffraction(XRD),Scanning Electron Microscope(SEM)and Transmission Electron Microscope(TEM).The mechanical performance was also tested by tensile test at room temperature in the present study.The results indicated that the lamellar 14H-LPSO structure formed during the solid solution process at 793 K for 24 h,and also existed after hot extrusion process.The dynamic recrystallization(DRX)occurred during hot extrusion.The DRXed fine grain size was∼5μm.Meanwhile,some un-DRXed grains contained LPSO structure had a roughly orientation along the extrusion direction.The tensile test result showed that the as-extruded alloy had a better elongation of 14%due to fine DRXed grain and fiber-like un-DRXed with LPSO structure attributed to the high elongation.Because of the precipitation of theβ′-phase,the ultimate tensile strength(UTS)and yield tensile strength(YTS)increased up to 415 MPa(UTS)and 374 MPa(YTS),respectively. | Kai Wen Ke Liu Zhaohui Wang Shubo Li Wenbo Du | 2015 | Journal of Magnesium and Alloys2015，3，1： | 7 |
| 4 | Carboniferous Arc Setting in Central Hainan: Geochronological and Geochemical Evidences on the Andesitic and Dacitic Rocks显示文摘Volcanic rocks in the Bangxi-Chenxing tectonic zone provide important carries for better understanding the Late Paleozoic tectonic evolution in Hainan and its temporal-spatial pattern of the eastern Paleotethyan evolution. This paper presents a set of new geochronological and geochemical data on the andesitic and dacitic rocks along the Bangxi-Chenxing tectonic zone in central Hainan. The representative andesitic and dacitic samples yield similar zircon U-Pb ages of 353±3 and 351±7 Ma, respectively, being of Early Carboniferous origin. These volcanic rocks are characterized by low TiO_2 and high Al_2O_3 contents and are enriched in LILEs and LREEs but depletion in HFSEs, along with negative ε_(Nd)(t) values of-1.4–-4.7 and high ^(87)Sr/^(86)Sr(i) ratios of 0.707 2–0.710 1. Geochemical signatures suggest that the andesitic and dacitic samples might originate from a metasomatized wedge modified by the slab-derived component in a continental arc setting. In combination with the available data, it is proposed for the development of a Carboniferous continental arc in response to the eastern Paleotethyan evolution. The Bangxi-Chenxing tectonic zone might westerly link with the Jinshajiang-Ailaoshan-Song Ma suture zone, constituting an assemblage boundary between the South China and Indochina blocks. | Shubo Li Huiying He Xin Qian Yuejun Wang Aimei Zhang | 2018 | Journal of Earth Science2018，29，2： | 6 |
| 5 | Release Connection Fingerprints in Social Networks Using Personalized Differential Privacy显示文摘In social networks, different users may have different privacy preferences and there are many users with public identities. Most work on differentially private social network data publication neglects this fact. We aim to release the number of public users that a private user connects to within n hops, called n-range Connection fingerprints(CFPs), under user-level personalized privacy preferences. We proposed two schemes, Distance-based exponential budget absorption(DEBA) and Distancebased uniformly budget absorption using Ladder function(DUBA-LF), for privacy-preserving publication of the CFPs based on Personalized differential privacy(PDP),and we conducted a theoretical analysis of the privacy guarantees provided within the proposed schemes. The implementation showed that the proposed schemes are superior in publication errors on real datasets. | LI Yongkai LIU Shubo LI Dan WANG Jun | 2018 | Chinese Journal of Electronics2018，27，5： | 5 |
| 6 | Differentially Private Spatial Decompositions for Geospatial Point Data显示文摘Technological advancements in data analysis and data releasing have put forward higher security requirements, such as privacy guarantee and strictly provable security, this new area of research is called differential privacy. As for geospatial point data, the exiting methods use the tree structure to split the data space to enhance the data utility and usually adopt uniform budgeting method. Different from this, we propose a novel non-uniform allocation scheme for privacy budget which is a parameter to specify the degree of privacy guarantee. Firstly, the spatial data is indexed by quadtree, then, different privacy budget is allocated to each layer of quadtree using Fibonacci series features, and we designate this budgeting method as Fibonacci allocation. Experimental results show that Fibonacci allocation is significantly more accurate in data queries than the state-of-the-art methods under the same privacy guarantee level and fits for arbitrary range queries. Furthermore, data utility can be improved by post-processing and threshold determination. | WANG Jun LIU Shubo LI Yongkai CAO Hui LIU Mengjun | 2016 | China Communications2016，13，4： | 5 |
| 7 | 数字减影脑血管造影术对伴发眩晕的后循环缺血患者血管异常病因分析显示文摘目的通过数字减影脑血管造影术(DSA)对伴发眩晕的后循环缺血(PCI)患者的头颈部血管进行检查,分析其血管异常病因,掌握其发病规律。方法对138例伴发眩晕的PCI患者入院后给予详细的影像学检查,包括MRI、DSA,分析患者血管异常与PCI的因果关系。结果 138例患者,诊断为椎基底动脉系统短暂性缺血发作者89例、椎基底动脉系统脑梗死49例,综合所有的影像学检查结果分析,椎基底动脉血管异常者86例,考虑与PCI病因有关,有12例患者明确有心脏病心房颤动,考虑与后循环脑梗死病因有关,其余40例患者病因不明确。结论伴发眩晕的PCI患者的血管异常病因为:①椎基底动脉系统血管变异;②椎基底动脉系统血管狭窄或闭塞导致的后循环出现低灌注状态或脑梗死。 | 胡沛霖 陈树波 王文胜 李喜朋 周建峰 胡岩芳 HU Peilin CHEN Shubo,WANG Wensheng LI Xipeng,ZHOU Jian feng HU Yanfang | 2012 | 临床荟萃2012，27，6： | 4 |
| 8 | Electrochemical oxidation of 1H,1H,2H,2H-perfluorooctane sulfonic acid(6:2 FTS) on DSA electrode:Operating parameters and mechanism显示文摘The 6:2 FTS was the substitute for perfluorooctane sulfonate(PFOS) in the chrome plating industry in Japan. Electrochemical oxidation of 6:2 FTS was investigated in this study. The degradabilities of PFOS and 6:2 FTS were tested on the Ti/SnO2–Sb2O5–Bi2O3anode. The effects of current density,potential,and supporting electrolyte on the degradation of 6:2 FTS were evaluated. Experimental results showed that 6:2 FTS was more easily degraded than PFOS on the Ti/SnO2–Sb2O5–Bi2O3anode. At a low current density of 1.42 mA/cm2,6:2 FTS was not degraded on Ti/SnO2–Sb2O5–Bi2O3,while the degradation ratio increased when the current density ranged from 4.25 to 6.80 mA/cm2. The degradation of 6:2 FTS at current density of 6.80 mA/cm2 followed pseudo first-order kinetics with the rate constant of 0.074 hr-1. The anodic potential played an important role in the degradation of 6:2 FTS,and the pseudo first-order rate constants increased with the potential. The surface of Ti/SnO2–Sb2O5–Bi2O3was contaminated after electrolysis at constant potential of 3 V,while the fouling phenomenon was not observed at 5 V. The fouled anode could be regenerated by incinerating at 600°C. The intermediates detected by ultra-performance liquid chromatography coupled with a triple-stage quadrupole mass spectrometer(UPLC–MS/MS) were shorter chain perfluorocarboxylic acids. The 6:2 FTS was first attacked by hydroxyl radical,and then formed perfluorinated carboxylates,which decarboxylated and removed CF2 units to yield shorter-chain perfluorocarboxylic acids. | Qiongfang Zhuo Xiang Li Feng Yan Bo Yang Shubo Deng Jun Huang Gang Yu | 2014 | Journal of Environmental Sciences2014，26，8： | 4 |
| 9 | Privacy-preserving Distributed Location Proof Generating System显示文摘The rapid development of location-based service(LBS) drives one special kind of LBS, in which the service provider verifies user location before providing services. In distributed location proof generating schemes, preventing users from colluding with each other to create fake location proofs and protecting user's location privacy at the same time, are the main technical challenges to bring this kind of LBS into practical. Existing solutions tackle these challenges with low collusion-detecting efficiency and defected collusion-detecting method. We proposed two novel location proof generating schemes, which inversely utilized a secure secret-sharing scheme and a pseudonym scheme to settle these shortcomings. Our proposed solution resists and detects user collusion attacks in a more efficient and correct way. Meanwhile, we achieve a higher level of location privacy than that of previous work. The correctness and efficiency of our proposed solution is testified by intensive security analysis, performance analysis, as well as experiments and simulation results. | LIU Mengjun LIU Shubo ZHANG Rui Li Yongkai WANG Jun CAO Hui | 2016 | China Communications2016，13，3： | 3 |
| 10 | A cross-linked fluorinated poly (aryl ether oxadiazole) s using a thermal cross-linking for anion exchange membranes显示文摘 | Cunpu Li Shubo Wang Wenpin Wang Xiaofeng Xie Yafei Lv Changsheng Deng | 2013 | International Journal of Hydrogen Energy2013，，： | 3 |
| 11 | Activation of transmembrane receptor tyrosine kinase DDR1-STAT3 cascade by extracellular matrix remodeling promotes liver metastatic colonization in uveal melanoma显示文摘Colonization is believed a rate-limiting step of metastasis cascade.However,its underlying mechanism is not well understood.Uveal melanoma(UM),which is featured with single organ liver metastasis,may provide a simplified model for realizing the complicated colonization process.Because DDR1 was identified to be overexpressed in UM cell lines and specimens,and abundant pathological deposition of extracellular matrix collagen,a type of DDR1 ligand,was noted in the microenvironment of liver in metastatic patients with UM,we postulated the hypothesis that DDR1 and its ligand might ignite the interaction between UM cells and their surrounding niche of liver thereby conferring strengthened survival,proliferation,sternness and eventually promoting metastatic colonization in liver.We tested this hypothesis and found that DDR1 promoted these malignant cellular phenotypes and facilitated metastatic colonization of UM in liver.Mechanistically,UM cells secreted TGF-β1 which induced quiescent hepatic stellate cells(qHSCs)into activated HSCs(aHSCs)which secreted collagen type I.Such a remodeling of extracellular matrix,in turn,activated DDR1,strengthening survival through upregulating STAT3-dependent Mcl-1 expression,enhancing sternness via upregulating STAT3-dependent S0X2,and promoting clonogenicity in cancer cells.Targeting DDR1 by using 7rh,a specific inhibitor,repressed proliferation and survival in vitro and in vivo outgrowth.More importantly,targeting cancer cells by pharmacological inactivation of DDR1 or targeting microenvironmental TGF-β1-collagen I loop exhibited a prominent anti-metastasis effect in mice.In conclusion,targeting DDR1 signaling and TGF-β1 signaling may be a novel approach to diminish hepatic metastasis in UM. | Wei Dai Shenglan Liu Shubo Wang Li Zhao Xiao Yang Jingfeng Zhou Yun Wang Jing Zhang Ping Zhang Ke Ding Yangqiu Li Jingxuan Pan | 2021 | Signal Transduction and Targeted Therapy2021，6，6： | 3 |
| 12 | Catalysis-based specific detection and inhibition of tyrosinase and their application显示文摘Tyrosinase is an important enzyme in controlling the formation of melanin in melanosome,and plays a key role in the pigmentation of hair and skin.The abnormal expression or activation of tyrosinase is associated with several diseases such as albinism,vitiligo,melanoma and Parkinson disease.Excessive deposition of melanin could cause diseases such as freckles and brown spots in the human body,and it is also closely related to browning of fruits and vegetables and insect molting.Detecting and inhibiting the activity of tyrosinase is of extraordinary value in the progress of diagnosis and treatment of these diseases.Therefore,many selective optical detection probes and small molecular inhibitors have been developed,and have made significant contributions to the basic and clinical research on these diseases.In this paper,the detection and inhibition of tyrosinase and their application in whitening products are reviewed,with special emphasis on development of fluorescent probes and inhibitors.Hopefully,this review will help design more efficient and sensitive tyrosinase probes and inhibitors,as well as shed light on novel treatment of diseases such as melanoma. | Yunwei Qu Qing Zhan Shubo Du Yang Ding Bin Fang Wei Du Qiong Wu Haidong Yu Lin Li Wei Huang | 2020 | Journal of Pharmaceutical Analysis2020，10，5： | 2 |
| 13 | Full Length Article Effect of trace addition of al on microstructure,texture and tensile ductility of Mg-6Zn-0.5Er alloy显示文摘The effects of trace addition of Al on the microstructure and mechanical properties of the as-extruded Mg-6Zn-0.5Er alloy were investigated in the present investigation.The results showed that the trace addition of Al affected the mechanical properties significantly.The elongation of the extruded alloy was improved markedly from 17 to 25%with the trace addition of Al.It is suggested that the improvement of ductility was mainly attributed to the modification of basal texture of the as-extruded alloy,resulting from the complete dynamic recrystallization due to the trace addition of Al.In addition,the existence of the complete dynamic recrystallization led to an obvious increase in the number fraction of high angle grain boundaries,the average misorientation angle and Schmid factors for the(0001)1120 slip,which also have contributed to the improvement of ductility. | Xiaobing Zheng Wenbo Du Ke Liu Zhaohui Wang Shubo Li | 2016 | Journal of Magnesium and Alloys2016，4，2： | 2 |
| 14 | Degradation of guanidinium-functionalized anion exchange membrane during alkaline environment显示文摘 | Weiwei Li Shubo Wang Xuefei Zhang Wenping Wang Xiaofeng Xie Pucheng Pei | 2014 | International Journal of Hydrogen Energy2014，，： | 2 |
| 15 | Effects of trace Ca/Sn addition on corrosion behaviors of biodegradable Mg-4Zn-0.2Mn alloy显示文摘The effects of alloying elements of Ca/Sn on corrosion behaviors of the as-cast Mg-4Zn-0.2Mn alloy were investigated by immersion tests and electrochemical methods.The results indicated that the average corrosion rate value of the Mg-4Zn-0.2Mn-Ca alloy was∼0.31 mm/year in Hank’s physiological solution for 40 days,and corrosion resistance increased for the specimens containing Ca element rather than that containing Sn because of the higher breakdown potential value,lower current density and deactivated corrosion rate,which was ascribed to a formation of the uniformly distributed Mg-Zn-Ca ternary phase. | Wenbo Du Ke Liu Ke Ma Zhaohui Wang Shubo Li | 2018 | Journal of Magnesium and Alloys2018，6，1： | 2 |
| 16 | Synthesis and characterization of a fluorinated cross-linked anion exchange membrane显示文摘 | Wenpin Wang Shubo Wang Weiwei Li Xiaofeng Xie Yafei lv | 2013 | International Journal of Hydrogen Energy2013，，： | 2 |
| 17 | Single-atom Sn-Zn pairs in CuO catalyst promote dimethyldichlorosilane synthesis显示文摘Single-atom catalysts are of great interest because they can maximize the atom-utilization efficiency and generate unique catalytic properties;however,much attention has been paid to single-site active components,rarely to catalyst promoters.Promoters can significantly affect the activity and selectivity of a catalyst,even at their low concentrations in catalysts.In this work,we designed and synthesized CuO catalysts with atomically dispersed co-promoters of Sn and Zn.When used as the catalyst in the Rochow reaction for the synthesis of dimethyldichlorosilane,this catalyst exhibited much-enhanced activity,selectivity and stability compared with the conventional CuO catalysts with promoters in the form of nanoparticles.Density functional theory calculations demonstrate that single-atomic Sn substitution in the CuO surface can enrich surface Cu vacancies and promote dispersion of Zn to its atomic levels.Sn and Zn single sites as the co-promoters cooperatively generate electronic interaction with the CuO support,which further facilitates the adsorption of the reactant molecules on the surface,thereby leading to the superior catalytic performance. | Qi Shi Yongjun Ji Wenxin Chen Yongxia Zhu Jing Li Hezhi Liu Zhi Li Shubo Tian Ligen Wang Ziyi Zhong Limin Wang Jianmin Ma Yadong Li Fabing Su | 2020 | National Science Review2020，7，3： | 2 |
| 18 | Experimental and numerical study on improvement performance by wave parallel flow field in a proton exchange membrane fuel cell显示文摘The performance and operation stability of proton exchange membrane fuel cells(PEMFCs)are closely related to the transportation of reactants and water management in the membrane electrode assembly(MEA)and flow field.In this paper,a new three-dimensional wave parallel flow field(WPFF)in cathode was designed and analyzed throughout simulation studies and an experimental method.The experimental results show that the performance of PEMFC with WPFF outperforms that of PEMFC with straight parallel flow field(SPFF).Specifically,the peak power density increased by 13.45%for the PEMFC with WPFF as opposed to PEMFC with SPFF.In addition,the flow field with area of 11.56 cm^(2) was formed by the assembly of transparent end plate used for cathode and the traditional graphite plate used for anode.To understand the mechanism of the novel flow field improving the performance of PEMFC,a model of PEMFC was proposed based on the geometry,operating conditions and MEA parameters.The thickness of gas diffusion layers(GDL),catalytic layers(CL)and proton exchange membrane were measured by scanning electron microscope.The simulation result shows that compared with SPFF,the WPFF based PEMFC promote the oxygen transfer from flow channel to the surface of CL through GDL,and it was beneficial to remove the liquid water in the flow channel and the MEA. | Zijun Li Shubo Wang Sai Yao Xueke Wang Weiwei Li Tong Zhu Xiaofeng Xie | 2022 | Chinese Journal of Chemical Engineering2022，35，5： | 2 |
| 19 | Vegetation Phenology in Permafrost Regions of Northeastern China Based on MODIS and Solar-induced Chlorophyll Fluorescence显示文摘Vegetation phenology is an indicator of vegetation response to natural environmental changes and is of great significance for the study of global climate change and its impact on terrestrial ecosystems.The normalized difference vegetation index(NDVI)and enhanced vegetation index(EVI),extracted from the Moderate Resolution Imaging Spectrometer(MODIS),are widely used to monitor phenology by calculating land surface reflectance.However,the applicability of the vegetation index based on‘greenness'to monitor photosynthetic activity is hindered by poor observation conditions(e.g.,ground shadows,snow,and clouds).Recently,satellite measurements of solar-induced chlorophyll fluorescence(SIF)from OCO-2 sensors have shown great potential for studying vegetation phenology.Here,we tested the feasibility of SIF in extracting phenological metrics in permafrost regions of the northeastern China,exploring the characteristics of SIF in the study of vegetation phenology and the differences between NDVI and EVI.The results show that NDVI has obvious SOS advance and EOS lag,and EVI is closer to SIF.The growing season length based on SIF is often the shortest,while it can represent the true phenology of vegetation because it is closely related to photosynthesis.SIF is more sensitive than the traditional remote sensing indices in monitoring seasonal changes in vegetation phenology and can compensate for the shortcomings of traditional vegetation indices.We also used the time series data of MODIS NDVI and EVI to extract phenological metrics in different permafrost regions.The results show that the length of growing season of vegetation in predominantly continuous permafrost(zone I)is longer than in permafrost with isolated taliks(zone II).Our results have certain significance for understanding the response of ecosystems in cold regions to global climate change. | WEN Lixiang GUO Meng YIN Shuai HUANG Shubo LI Xingli YU Fangbing | 2021 | Chinese Geographical Science2021，31，3： | 1 |
| 20 | Microstructure evolution of SiC _ w/AZ91 magnesium matrix composite during high temperature compression 显示文摘 | Li Shubo Gan Weimin Zheng Mingyi | 2005 | Transactions of Nonferrous Metals Society of China2005，15，2： | 1 |
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