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| 1 | Towards 6G wireless communication networks:vision,enabling technologies,and new paradigm shifts显示文摘The fifth generation(5G)wireless communication networks are being deployed worldwide from 2020 and more capabilities are in the process of being standardized,such as mass connectivity,ultra-reliability,and guaranteed low latency.However,5G will not meet all requirements of the future in 2030 and beyond,and sixth generation(6G)wireless communication networks are expected to provide global coverage,enhanced spectral/energy/cost efficiency,better intelligence level and security,etc.To meet these requirements,6G networks will rely on new enabling technologies,i.e.,air interface and transmission technologies and novel network architecture,such as waveform design,multiple access,channel coding schemes,multi-antenna technologies,network slicing,cell-free architecture,and cloud/fog/edge computing.Our vision on 6G is that it will have four new paradigm shifts.First,to satisfy the requirement of global coverage,6G will not be limited to terrestrial communication networks,which will need to be complemented with non-terrestrial networks such as satellite and unmanned aerial vehicle(UAV)communication networks,thus achieving a space-airground-sea integrated communication network.Second,all spectra will be fully explored to further increase data rates and connection density,including the sub-6GHz,millimeter wave(mmWave),terahertz(THz),and optical frequency bands.Third,facing the big datasets generated by the use of extremely heterogeneous networks,diverse communication scenarios,large numbers of antennas,wide bandwidths,and new service requirements,6G networks will enable a new range of smart applications with the aid of artificial intelligence(AI)and big data technologies.Fourth,network security will have to be strengthened when developing 6G networks.This article provides a comprehensive survey of recent advances and future trends in these four aspects.Clearly,6G with additional technical requirements beyond those of 5G will enable faster and further communications to the extent that the boundary between physical and cyber worlds disappears. | Xiaohu YOU Cheng-Xiang WANG Jie HUANG Xiqi GAO Zaichen ZHANG Mao WANG Yongming HUANG Chuan ZHANG Yanxiang JIANG Jiaheng WANG Min ZHU Bin SHENG Dongming WANG Zhiwen PAN Pengcheng ZHU Yang YANG Zening LIU Ping ZHANG Xiaofeng TAO Shaoqian LI Zhi CHEN Xinying MA Chih-Lin I Shuangfeng HAN Ke LI Chengkang PAN Zhimin ZHENG Lajos HANZO Xuemin(Sherman)SHEN Yingjie Jay GUO Zhiguo DING Harald HAAS Wen TONG Peiying ZHU Ganghua YANG Jun WANG Erik GLARSSON Hien Quoc NGO Wei HONG Haiming WANG Debin HOU Jixin CHEN Zhe CHEN Zhangcheng HAO Geoffrey Ye LI Rahim TAFAZOLLI Yue GAO HVincent POOR Gerhard P.FETTWEIS Ying-Chang LIANG | 2021 | Science China(Information Sciences)2021，64，1： | 122 |
| 2 | Pattern Recognition of Thermal Analysis Cooling Curves and Quality Evaluation of Melt Cast Alloys显示文摘The development of thermal analysis techniques for evaluation of cast alloy melt quality and its current applications in the foundry were reviewed. The characteristics of the current thermal analysis techniques were analyzed. A new comprehensive method for cooling curve recognition has been proposed. The evaluation of cast alloy melt quality was realized. | Yanxiang LI Xiao HU Xuerong XU | 2001 | Journal of Materials Science & Technology2001，17，1： | 11 |
| 3 | Effect of tempering temperature on microstructure and mechanical properties of high boron white cast iron显示文摘The effect of different tempering temperatures on the microstructure and mechanical properties of airquenched high boron white cast iron was studied.The results indicate that the high boron white cast iron comprises dendritic matrix and inter-dendritic M 2 B boride;and the matrix comprises martensite and pearlite.After quenching in the air,the matrix is changed into lath martensite;but only 1-μm-size second phase exists in the matrix.After tempering,another second phase of several tens of nanometers is found in the matrix,and the size and quantity increase with an increase in tempering temperature.The two kinds of second precipitation phase with different sizes in the matrix have the same chemical formula,but their forming stages are different.The precipitation phase with larger size forms during the austenitizing process,while the precipitation phase with smaller size forms during the tempering process.When tempered at different temperatures after quenching,the hardness decreases with an increase in the tempering temperature,but it increases a little at 450 ℃ due to the precipitation strengthening effect of the second phase,and it decreases greatly due to the martensite decomposition above 450 ℃.The impact toughness increases a little when tempered below 300 ℃,but it then decreases continuously owing to the increase in size and quantity of the secondary precipitate above 300 ℃.Considered comprehensively,the optimum tempering temperature is suggested at 300 ℃ to obtain a good combination of hardness and toughness. | Liu Zhongli Li Yanxiang Chen Xiang | 2012 | China Foundry2012，9，4： | 10 |
| 4 | A disintegrin and metalloproteinase with thrombospondin motif 1(ADAMTS1) expression increases in acute aortic dissection显示文摘Acute aortic dissection(AAD) is a life-threatening cardiovascular disease caused by progressive medial degeneration of the aortic wall. A disintegrin and metalloproteinase with thrombospondin motifs 1(ADAMTS1) is a recently identified extracellular metalloproteinase participating in the development of vascular disease, such as atherosclerosis. In the present study, we found that ADAMTS1 was significantly elevated in blood samples from AAD patients compared with patients with acute myocardial infarction and healthy volunteers. Based on these findings, we established an AAD model by infusing angiotensin II in older mice. AAD was successfully developed in aorta tissues, with an incidence of 42% after 14 days in the angiotensin II group. Macrophage and neutrophil infiltration was observed in the media of the aorta, and ADAMTS1 overexpression was found in the aorta by Western blot and immunohistochemistry. Double immunofluorescence staining showed the expression of ADAMTS1 in macrophages and neutrophils. Consistent with the upregulation of ADAMTS1 in aortic dissection tissues, versican(a proteoglycan substrate of ADAMTS1) was degraded significantly more in these tissues than in control aortic tissues. These data suggest that the increased expression of ADAMTS1 protein in macrophages and neutrophils that infiltrated aortic tissues may promote the progression of AAD by degrading versican. | Yanxiang Gao Wenjing Wu Changan Yu Fangming Zhong Geng Li Wei Kong Jingang Zheng | 2016 | Science China(Life Sciences)2016，59，1： | 8 |
| 5 | Host–guest materials with room temperature phosphorescence:Tunable emission color and thermal printing patterns显示文摘The research of purely organic materials with long afterglow has drawn more and more attention,especially for those with stimulus‐response characteristic.So far,this kind of material is really very scarce and their performance is not good enough.In this study,we successfully developed an efficient heatingresponsive room‐temperature phosphorescence material with phosphorescence efficiency and lifetime up to 13.4%and 2.08 s through the simple host–guest doping strategy.Further on,by introducing the additional energy acceptor of fluorescein with concentration‐dependent emission to construct ternary doping systems,the afterglow color was extended from blue to yellow.Accordingly,the multicolor thermal printings have been easily realized,showing the great practical application prospects. | Yunsheng Wang Jie Yang Yanxiang Gong Manman Fang Zhen Li Ben Zhong Tang | 2020 | SmartMat2020，1，1： | 8 |
| 6 | Microstructure and mechanical properties of a new type of austempered boron alloyed high silicon cast steel显示文摘In the present paper, a new type of austempered boron alloyed high silicon cast steel has been developed, and its microstructures and mechanical properties at different temperatures were investigated. The experimental results indicate that the boron alloyed high silicon cast steel comprises a dendritic matrix and interdendritic eutectic borides in as-cast condition. The dendritic matrix is made up of pearlite, ferrite, and the interdendritic eutectic boride is with a chemical formula of M2B (M represents Fe, Cr, Mn or Mo) which is much like that of carbide in high chromium white cast iron. Pure ausferrite structure that consists of bainitic ferrite and retained austenite can be obtained in the matrix by austempering treatment to the cast steel. No carbides precipitate in the ausferrite structure and the morphology of borides remains almost unchanged after austempering treatments. Secondary boride particles precipitate during the course of austenitizing. The hardness and tensile strength of the austempered cast steel decrease with the increase of the austempering temperature, from 250 oC to 400 oC. The impact toughness is 4-11 J?cm-2 at room temperature and the impact | Chen Xiang Li Yanxiang | 2013 | China Foundry2013，10，3： | 7 |
| 7 | Study on Thermal Simulation of Solidification in Heavy Section Ductile Iron显示文摘Using an artificial intelligent instrument and a computer feedback control method, a new thermal simulation systemis studied. Based on numerical simulation of casting solidification, a sample in the new system successfully simulatedthe solidification of heavy section ductile iron. The results show that the new thermal simulation system is accurateand reliable. Not only cooling curve but also graphite in the center of the thermal sample and the heavy sectionductile iron is identical. Realization of accurate thermal simulation of solidification in heavy section ductile iron willbe helpful for studying formation mechanism and controlling graphite degeneration in heavy section ductile iron. | Zhenhua LI Yanxiang LI Huiyuan GENG Jianjun CHEN Chunyan ZHOU Junfa CHEN | 2003 | Journal of Materials Science & Technology2003，19，z1： | 5 |
| 8 | Fabrication,properties,and applications of open-cell aluminum foams:A review显示文摘Open-cell metallic foams or porous metals have a distinctive combination of excellent structural performance and superior functional characteristics,such as their light weight,energy absorption,sound absorption,heat dissipation,and electromagnetic shielding.As a primary representative of metallic foams,aluminum foam has developed into a new engineering material with many unique applications in the fields of aerospace,automotive industry,petrochemical industry,building materials,and etc.This paper summarizes the fabrication methods,properties,and applications of open-cell aluminum foams.The current status and development trends are also introduced. | Tan Wan Yuan Liu Canxu Zhou Xiang Chen Yanxiang Li | 2021 | Journal of Materials Science & Technology2021，，3： | 5 |
| 9 | Synthesis and biological evaluation of 8-substituted berberine derivatives as novel anti-mycobacterial agents显示文摘Tuberculosis(TB)is a disease which kills two million people every year and infects over one-third of the world's population.Eighteen new 8-substituted berberine derivatives were synthesized and evaluated for their anti-mycobacterial activities against M ycobacterium tuberculosis(M.tuberculosis)strain H_(37)Rv.Among these compounds,compound 6i was the most effective antitubercular agent with an MIC of 1.0μg/mL.Most importantly,compound 6i also exhibited a potent effect against clinically isolated rifampicin-and isoniazid-resistant M.tuberculosis strains,suggesting a different mode of action from the current drugs.Therefore,it shows potential for the development of new anti-TB agents. | Yanxiang Wang Haigen Fu Yinghong Li Jiandong Jiang Danqing Song | 2012 | Acta Pharmaceutica Sinica B2012，2，6： | 4 |
| 10 | Evolution of Pore Size Distribution and Mean Pore Size in Lotus-type Porous Magnesium Fabricated with Gasar Process显示文摘吝啬的毛孔上的压力缩放的气体的效果,孔和毛孔缩放莲花类型的分发与 Gasar 过程制作的多孔的镁被调查。理论分析和试验性的结果都显示那在那里存在到为与更狭窄的毛孔尺寸分发和更小的毛孔尺寸生产 lotus-typestructures 的氩 p_(Ar ) 的氢 p_(H_2 ) 的部分压力的最佳的比率。毛孔尺寸分发和毛孔尺寸上的团结模式的效果也被讨论。 | Yuan LIU Yanxiang LI Huawei ZHANG Jiang WAN | 2006 | Journal of Materials Science & Technology2006，22，3： | 3 |
| 11 | Coalescence separation of oil water emulsion on amphiphobic fluorocarbon polymer and silica nanoparticles coated fiber-bed coalescer显示文摘Discharging untreated oily wastewater into the environment disrupts the ecological balance,which is a global problem that requires urgent solutions.Superhydrophilic and superoleophilic fibrous medium(FM)effectively separated oil–water emulsion as it was hydrophobic underwater.But its separation efficiencies(SEs)first increased to 98.9%,then dropped to 97.6%in 10 min because of oil-fouling.To tackle this problem,FM deposited with 0%–10%silica nanoparticle(NPsFMs),then coated by fluorocarbon polymer(X-[CH_(2)CH_(2)O]nCH_(2)CH_(2)O-Y-NH-COOCH_(2)C4F9)(FCNPs FMs),was used to enhance its roughness and regulate its initial wettability to improve the anti-fouling property.FCFM and FCNPs FMs were hydrophobic and oleophobic in air and oleophobic underwater.Their water contact angles,oil contact angles and oil contact angles were 115.3°–121.1°,128.8°–136.5°,and 131.6°–136.7°,respectively,meeting the requirement of 90°–140°for coalescence separation.FCNPs FM-5 had the best separation performance with a constant value of 99.8%in 10 min,while that of FCNPs FM-10 slightly decreased to 99.5%.Theoretical released droplet(TRD)diameter,calculated by the square root of the product of pore radius and fiber diameter,was used for the evaluation of coalescence performance.Analyzed by two ideal models,TRD diameter and fiber diameter showed a parabola type relationship,proving that the separation efficiency was a collaborative work of wettability,pore size and fiber diameter.Also,it explained the SEs reduction from FCNPs FM-5 to FCNPs FM-10 was revelent to the three parameters.Moreover,FCNPsFMs effectively separated emulsions stabilized by cationic surfactant CTAB(SEs:97.3%–98.4%)and anionic surfactant SDBS(SEs:91.3%–93.4%).But they had an adverse effect on nonionic surfactant Tween-80 emulsion separation(SEs:94.0%–71.76%).Emulsions made by diverse oils can be effectively separated:octane(SEs:99.4%–100%),rapeseed oil(SEs:97.3%–98.8%),and diesel(SEs:95.2%–97.0%).These findings provide new insights for designing novel materials for oil–water separation by coalescence mechanism. | Qian Zhang Lei Li Lixia Cao Yanxiang Li Wangliang Li | 2021 | Chinese Journal of Chemical Engineering2021，34，8： | 3 |
| 12 | Synthesis and biological evaluation of new 13-n-nonylprotoberberine derivatives as antitubercular agents显示文摘Tuberculosis is a serious threat to public health throughout the world.A series of new l3-n-nonylprotoberberine derivatives was designed,synthesized and evaluated for anti-mycobacterial activity against Mycobacterium tuberculosis strain H_(37)Rv.Several compounds(2,11a-c,11g,13d,15c)exhibited excellent anti-tubercular activity with an MIC below 1.0μg/mL.Notably,compound 13d showed potential antibacterial effect against both drug-susceptible and multidrug-resistant(MDR)M.tuberculosis with MIC ranges of 0.0625-1.0μg/mL.These results suggest a mode of action different from that of the current anti-mycobacterial drugs rifampicin and isoniazid.Hence,compound 13d is an attractive lead compound for the development of new antitubercular agents. | Yinghong Li Yanxin Liu Yanxiang Wang Sheng Tang Danqing Song | 2013 | Acta Pharmaceutica Sinica B2013，3，1： | 3 |
| 13 | Full-spectrum cell-free RAN for 6G systems:system design and experimental results显示文摘With distributed transceivers and scalable cooperative transmission,cell-free massive multipleinput multiple-output(CF-mMIMO)technology eliminates the“cells”of traditional mobile communications,thereby significantly improving the performance of wireless networks.CF-mMIMO is considered as a major technical tool for achieving the key performance indicators of sixth generation(6G)mobile communication systems.In this paper,a scalable implementation architecture for CF-mMIMO is proposed,based on which potential key technologies such as channel information acquisition,transceiver design,dynamic user and access point association,and novel duplexing are introduced.Finally,based on low-cost commercial access points,a CF-mMIMO testbed with 64 transmit and receive antennas is developed,and the performance of the distributed receiver design is evaluated. | Dongming WANG Xiaohu YOU Yongming HUANG Wei XU Jiamin LI Pengcheng ZHU Yanxiang JIANG Yang CAO Xinjiang XIA Ziyang ZHANG Qingji JIANG Pan WANG Dongjie LIU Kang ZHENG Mengting LOU Jing JIN Qixing WANG Jiangzhou WANG | 2023 | Science China(Information Sciences)2023，66，3： | 3 |
| 14 | Anomalous temperature dependence of the electrical resistivity of molten Sb显示文摘Using the d.c. four-probe method, the electrical resistivity of high-purity liquid Sb has been accurately measured as functions of temperature. It is observed that the resistivity of liquid Sb changes abnormally with increasing temperature, which is very different from that of simple liquid metals. Based on the reported structure factor at several temperatures, the results obtained in this work have been discussed and interpreted qualitatively according to Ziman theory. The analysis suggests that the existence of short-range order structure near the melting point can account for the abnormal phenomenon observed in the resistivity of liquid Sb, in which semimetal-metal transaction takes place in the melting process. At the same time, the progress of the structure change of liquid Sb with temperature has also been pointed | WANG Qiang LU Kunquan LI Yanxiang | 2001 | Chinese Science Bulletin2001，46，17： | 3 |
| 15 | Synthesis and biological evaluation of novel tricyclic matrinic derivatives as potential anti-filovirus agents显示文摘Twenty-six novel tricyclic sophoridinic and matrinic derivatives containing a common chlorinated benzene fragment were designed, synthesized and evaluated for their anti-ebolavirus(EBOV)activities. Structure–activity relationship analysis indicated:(i) 12 N-dichlorobenzyl motif was beneficial for the activity;(ii) the chiral configuration at C5 atom might not affect the activity much. Among the target compounds, compound 7d exhibited the most potent potency against EBOV with an IC_(50) value of 5.29 μmol/L and an SI value of over 37.8. Further in vivo anti-EBOV assay of 7d identified its high effectiveness, and in vivo anti-MARV assay of 7d suggested its inspiring broad-spectrum anti-filovirus activity. The results provided powerful information on further strategic optimization and development of this kind of compounds against filoviruses. | Xin Zhang Qiang Liu Qianqian Li Yinghong Li Zhandong Liu Hongbin Deng Sheng Tang Yanxiang Wang Youchun Wang Danqing Song | 2018 | Acta Pharmaceutica Sinica B2018，8，4： | 2 |
| 16 | A Study on Tribological Properties of Polypropylene Nanocomposites Reinforced with Pretreated HNTs显示文摘The polypropylene(PP) nanocomposites filled with pretreated halloysite nanotubes(HNTs) were prepared by the melt-blending method. Before filling, the as-received HNTs powder was at first purified and then modified. The characterization tests showed that the purified HNTs had less impurity and more uniform pore size distribution and the surface hydrophobicity of the modified HNTs was obviously improved. The mechanical and tribological properties of the PP/HNTs nanocomposites were extensively investigated. The results showed that the tensile, bending and notched impact strength of the PP/HNTs nanocomposites was somewhat improved, but the wear resistance of the PP/HNTs nanocomposites was obviously enhanced. | Liu Zan Li Yanxiang Ma Lu Qin Dunzhong Cheng Zhilin | 2017 | China Petroleum Processing & Petrochemical Technology2017，19，3： | 2 |
| 17 | Metal-gas eutectic growth during unidirectional solidification显示文摘 | Yuan Liu Yanxiang Li Jiang Wan Huawei Zhang | 2006 | Metallurgical and Materials Transactions A2006，，9： | 2 |
| 18 | Directional solidification of metal-gas eutectic and fabrication of regular porous metals显示文摘Directional solidification of metal-gas eutectic (Gasar) is a novel process for making regular porous metals.This process is based on a solid-gas eutectic reaction involving a gaseous medium and a metal or a ceramic phase, andallows an easy control of the porosity, such as its pore size, pore orientation and morphology in a wide range by properlyadjusting its melting and solidification conditions. The latest progress and our research work in this field are reviewed inthis paper. | Yuan LIU Huawei ZHANG Xiang CHEN Yanxiang LI | 2005 | China Foundry2005，2，3： | 2 |
| 19 | Discovery and identification of EIF2AK2 as a direct key target of berberine for anti-inflammatory effects显示文摘Using chemoproteomic techniques,we first identified EIF2AK2,eEF1A1,PRDX3 and VPS4B as direct targets of berberine(BBR)for its synergistically anti-inflammatory effects.Of them,BBR has the strongest affinity with EIF2AK2 via two ionic bonds,and regulates several key inflammatory pathways through EIF2AK2,indicating the dominant role of EIF2AK2.Also,BBR could subtly inhibit the dimerization of EIF2AK2,rather than its enzyme activity,to selectively modulate its downstream pathways including JNK,NF-κB,AKT and NLRP3,with an advantage of good safety profile.In EIF2AK2 gene knockdown mice,the inhibitory IL-1β,IL-6,IL-18 and TNF-a secretion of BBR was obviously attenuated,confirming an EIF2AK2-dependent anti-inflammatory efficacy.The results highlight the BBR's network mechanism on anti-inflammatory effects in which EIF2AK2 is a key target,and inhibition of EIF2AK2 dimerization has a potential to be a therapeutic strategy against inflammationrelated disorders. | Wei Wei Qingxuan Zeng Yan Wang Xixi Guo Tianyun Fan Yinghong Li Hongbin Deng Liping Zhao Xintong Zhang Yonghua Liu Yulong Shi Jingyang Zhu Xican Ma Yanxiang Wang Jiandong Jiang Danqing Song | 2023 | Acta Pharmaceutica Sinica B2023，13，5： | 2 |
| 20 | Effect of copper on magnetostriction and mechanical properties of TbDyFe alloys显示文摘The intrinsic brittleness of the TbDyFe alloy significantly decreases its mach inability and applications.This paper aims to improve the toughness of TbDyFe alloy by adding Cu. Various alloys of the type(Tb_(0.3)Dy_(0.7))_(0.37)Fe_(0.63-χ)Cu_χ(χ=0, 0,01.0.03, 0.05, 0.08, 0.1) were fabricated by an arc melting furnace under a high purity argon atmosphere. The microstructure, magnetostrictive properties and mechanical performance were studied systematically. The results show that the (Tb,Dy)Cu phase forms in these alloys upon the addition of Cu. Correspondingly, their toughness improves, attributed to the formation of a (Tb,Dy)Cu phase. Compared to the Cu-free alloy, the fracture toughness (Kic) increases 2-3 times with increasing Cu content. However, the magnetostriction performance of these alloys declines with Cu addition, due to the low-magnetic performance of the (Tb,Dy)Cu phase at room temperature. Compared with other alloys, the alloy with the addition of 1at%Cu shows the best compromise between the saturation magnetostriction and fracture toughness. | Naijuan Wang Yuan Liu Huawei Zhang Xiang Chen Yanxiang Li | 2019 | Journal of Rare Earths2019，37，1： | 2 |
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