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| 1 | mm Wave communications for 5G: implementation challenges and advances显示文摘The requirement of the fifth generation(5 G) wireless communication for high throughput motivates the wireless industry to use the mm Wave(millimeter wave) communications for its wide bandwidth advantage. To compensate the heavy path loss and increase the communications capacity, phased array beamforming and massive multiple-input multiple-output(MIMO) techniques are employed at both the user equipment(UE) and base stations(BS). Considering the commercial requirements, 5 G mm Wave large array systems should be implemented in an energy-and cost-efficient way with a small form factor. To address above issues and realize a reliable communications link, taking into account the particular characteristics of5 G mm Wave systems, this paper firstly examines the design challenges and trade-offs in system implementations, then some of the design strategies are summarized. At last, recent advance in RF front-end circuits and receiver sub-systems is then highlighted. | Lianming LI Dongming WANG Xiaokang NIU Yuan CHAI Linhui CHEN Long HE Xu WU Fuchun ZHENG Tiejun CUI Xiaohu YOU | 2018 | Science China(Information Sciences)2018，61，2： | 19 |
| 2 | Dietary supplementation with Clostridium butyricum improves growth performance of broilers by regulating intestinal microbiota and mucosal epithelial cells显示文摘Clostridium butyricum has been widely considered an antibiotic substitute in recent years.It can promote growth performance,improve the immune response and enhance the intestinal barrier function of the host.In the present study,1-d-old Arbor Acres(AA)broilers were fed C.butyricum(1×109 cfu/kg)for 28 d.The transcriptomic characteristics of epithelial cells of the cecal mucosa were determined by RNA-sequence,and the cecal microbiota composition was explored by 16 S ribosomal RNA gene sequencing.The changes in the intestinal mucosa of broilers were then analyzed by tissue staining.Gene Ontology(GO)annotations identified substance transport and processes and pathways that might participate in intestinal development and cell viability.Kyoto Encyclopedia of Genes and Genomes(KEGG)pathway analysis revealed that the differentially expressed genes are involved in numerous pathways related to amino acid and vitamin metabolism and antioxidant and defensive functions,among others.The relative expression of some genes associated with intestinal barrier function(claudins 2,15,19,and 23,tight junction proteins 1,2,and 3 and mucin 1)was significantly increased in the treatment group(P<0.05 or P<0.01).Moreover,the proportion of Firmicutes was higher in the C.butyricum-treated group,whereas the proportion of Proteobacteria was higher in the control group.At the genus level,the relative abundances of Butyricicoccus and Lactobacillus,among other bacteria,were increased after C.butyricum supplementation.The tissue staining analysis showed that the cecal mucosa of broilers was significantly ameliorated after the addition of C.butyricum(P<0.05 or P<0.01).These results showed that dietary supplementation with C.butyricum can enhance the antioxidant capacity,mucosal barrier function,and stabilize the cecal microbiota,resulting in improving the growth performance. | Laipeng Xu Xiangli Sun Xianhua Wan Keke Li Fuchun Jian Wenting Li Ruirui Jiang Ruili Han Hong Li Xiangtao Kang Yanbin Wang | 2021 | Animal Nutrition2021，，4： | 12 |
| 3 | Phylogenetic and genetic characterization of a 2017 clinical isolate of H7N9 virus in Guangzhou,China during the fifth epidemic wave显示文摘Pathogenic H7N9 influenza viruses continue to pose a public health concern. The H7N9 virus has caused five outbreak waves of human infections in China since 2013. In the present study, a novel H7N9 strain(A/Guangdong/8 H324/2017) was isolated from a female patient with severe respiratory illness during the fifth wave of the 2017 H7N9 epidemic. Phylogenetic analysis showed that the H7N9 viruses collected during the fifth wave belong to two different lineages: the Pearl River Delta lineage and the Yangtze River Delta lineage. The novel isolate is closely related to the Pearl River Delta H7N9 viruses, which were isolated from patients in Guangdong Province. The novel H7N9 isolate has an insertion of three basic amino acids in the cleavage site of hemagglutinin(HA), which may enhance virulence in poultry. The 2017 isolate also possesses an R292 K substitution in the neuraminidase(NA)protein, which confers oseltamivir resistance. This study highlights the pandemic potential of the novel H7N9 virus in mammals;thus, future characterization and surveillance is warranted. | Yongqiang Deng Chunlin Li Jianfeng Han Yingfen Wen Jian Wang Wenxing Hong Xiaofeng Li Zhongyu Liu Qing Ye Jing Li Changshuai Zhou Lei Yu Chengfeng Qin Fuchun Zhang Tao Jiang | 2017 | Science China(Life Sciences)2017，60，12： | 9 |
| 4 | Mineralogy of the otoliths of naked carp Gymnocypris przewalskii (Kessler) from Lake Qinghai and its Sr/Ca potential implications for migratory pattern显示文摘Otoliths are biogenic carbonate minerals whose microstructure and microchemistry have been used for age determination, stock identification, life history and environmental tracing. Using X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy, we have determined the mineral types and crystalline characteristics of three pairs of otoliths from naked carp Gymnocypris przewalskii, the predominant fish in Lake Qinghai. The results indicate that the mineral of both lapillus and sagitta of the naked carp is aragonite, and that of asteriscus is vaterite. The aragonite of lapillus has prefect crystallization. Given the shape of lapillus and the sensitivity of its aragonite to water chemistry, lapillus was used to analyze temporal Sr/Ca ratios along the maximal growth axis by an electron probe microanalyzer (EPMA). Consistent variations of Sr/Ca ratios with a range of 1.0×10 3-5.0×10 3 on the long and short radii indicate that Sr/Ca ratios of lapillus potentially respond to the chemical compositions of the host waters during the period of the naked carp's growth and migration. Discontinuous (dark) zones of lapillus were formed during fall and winter when the naked carp grows slowly in Lake Qinghai, resulting in similar low Sr/Ca ratios to lake water, whereas incremental zones with higher Sr/Ca ratios respond to its migratory river waters during spring and summer. Various Sr/Ca ratios of incremental zones suggest that the migratory pattern of the naked carp may be much more flexible, rather than in a single river. Therefore, high-resolution otolith microchemistry of the naked carp can be used to trace its migratory behavior, which is of significance for determining its migratory pattern and life history of this precious species inhabiting the Tibetan Plateau. | ZHOU Ling JIN ZhangDong LI FuChun | 2012 | Science China Earth Sciences2012，55，6： | 6 |
| 5 | 寨卡病毒引起小鼠睾丸损伤并导致雄性不育显示文摘虽然寨卡病毒与其他黄病毒属成员,如登革热病毒、乙型脑炎病毒和两尼罗病毒都是通过蚊媒传播,但是前人的研究发现寨卡病毒在精液中存在数月之久,暗示其性接触传播的可能性。本研究表明寨卡病毒影响雄性生殖系统,提示了其对男性健康的潜在危害。 | Wenqiang Ma Shihua Li Shuoqian Ma Lina Jia Fuchun Zhang Yong Zhang Jingyuan Zhang Gary Wong Shanshan Zhang Xuancheng Lu Mei Liu Jinghua Yan Wei Li Chuan Qin Daishu Han Chengfeng Qin Na Wang 李向东 高福 | 2017 | 科学新闻2017，19，4： | 5 |
| 6 | Microstructure Control of Non-quenched and Tempered CT80Grade Coiled Tubing Steel显示文摘Complex working condition of coiled tube(CT) steel demands high strength and low ratio of yield strength(YS) to tensile strength(TS). Reasonable microstructure control is a key problem of CT steel. Controlled rolling and controlled cooling experiments were carried out by two kinds of tested steels with different chemical compositions to develop the non-quenched and tempered CT80 steel. Mechanical properties of the tested steels at different processes are all in good agreement with the properties requirement of CT80. Increasing of Mo and Nb contents improves transformation of acicular ferrite and martensite–austenite(M–A) islands. 4 vol% of fine M/A islands increase TS and decreases ratio of YS/TS. Cooling rate increasing also improves acicular ferrite transformation and enhances TS, but has little effect on ratio of YS/TS. To meet the requirement of high strength and low ratio of YS/TS, optimized complex microstructure of the CT80 steel is composed of acicular ferrite, about 30 vol% of bainite and 4 vol% of M–A islands. | Leyu Zhou Bo Jiang Mingyang Li Fuchun Yuan Chaolei Zhang Yazheng Liu | 2014 | Acta Metallurgica Sinica(English Letters)2014，27，3： | 5 |
| 7 | Stratigraphy and otolith microchemistry of the naked carp Gymnocypris przewalskii(Kessler) and their indication for water level of Lake Qinghai during the Ming Dynasty of China显示文摘耳石是在 teleost 鱼的内耳的源於生物的碳酸盐矿物质,其作文能记录周围的水环境的物理、化学的条件,由单个鱼住在。在在鸟岛附近取样的裸体鲤鱼的这研究,鱼骨和耳石,近海金海湖,为矿物学和 microchemical 作文过时、分析。现代耳石把古老的耳石的 microchemical 作文与那些作比较,当湖从高湖水平缩小了时,我们断定古老的裸体鲤鱼住在形成的一个寡妇湖,由与AMS-结合--<啜class=“ a-plus-plus ”> 14 鱼骨和耳石,地层学和样品地点的包围地形学的 C 年龄。AMS---< 啜 class= “ a-plus-plus ” > 14 古老的鱼骨和耳石的 C 标明日期结果证明这些裸体鲤鱼以前从 680 ~ 300 年生活了,即在中国的明王朝期间。X 光检查衍射(XRD ) 模式证明古老的火山砾由纯霰石组成,与现代的相同,显示火山砾 didnt 的矿物质在很长时间埋葬以后变化并且古老的火山砾此后对比较分析合适。Microchemical 结果两个都显示出那 Mg/Ca 的比率((70.12 汵牡爠獥牥潶物 ? 潣汵?敤敶潬 | WANG YuJiao JIN ZhangDong ZHOU Ling LI FuChun ZHANG Fei CHEN LiuMei QIU XinNing QI RuGui | 2014 | Science China Earth Sciences2014，57，10： | 3 |
| 8 | Optimal four-impulse rendezvous between coplanar elliptical orbits显示文摘Rendezvous in circular or near circular orbits has been investigated in great detail,while rendezvous in arbitrary eccentricity elliptical orbits is not sufficiently explored.Among the various optimization methods proposed for fuel optimal orbital rendezvous,Lawden's primer vector theory is favored by many researchers with its clear physical concept and simplicity in solution.Prussing has applied the primer vector optimization theory to minimum-fuel,multiple-impulse,time-fixed orbital rendezvous in a near circular orbit and achieved great success.Extending Prussing's work,this paper will employ the primer vector theory to study trajectory optimization problems of arbitrary eccentricity elliptical orbit rendezvous.Based on linearized equations of relative motion on elliptical reference orbit (referred to as T-H equations),the primer vector theory is used to deal with time-fixed multiple-impulse optimal rendezvous between two coplanar,coaxial elliptical orbits with arbitrary large eccentricity.A parameter adjustment method is developed for the prime vector to satisfy the Lawden's necessary condition for the optimal solution.Finally,the optimal multiple-impulse rendezvous solution including the time,direction and magnitudes of the impulse is obtained by solving the two-point boundary value problem.The rendezvous error of the linearized equation is also analyzed.The simulation results confirmed the analyzed results that the rendezvous error is small for the small eccentricity case and is large for the higher eccentricity.For better rendezvous accuracy of high eccentricity orbits,a combined method of multiplier penalty function with the simplex search method is used for local optimization.The simplex search method is sensitive to the initial values of optimization variables,but the simulation results show that initial values with the primer vector theory,and the local optimization algorithm can improve the rendezvous accuracy effectively with fast convergence,because the optimal results obtained by the primer vector theory are already very close to the actual optimal solution.If the initial values are taken randomly,it is difficult to converge to the optimal solution. | WANG JianXia BAOYIN HeXi LI JunFeng SUN FuChun | 2011 | Science China(Physics,Mechanics & Astronomy)2011，54，4： | 3 |
| 9 | Consensus of Second-Order Multi-Agent Systems with Time-Varying Delays and Antagonistic Interactions显示文摘This study investigates the consensus problem of second-order multi-agent systems subject to timevarying interval-like delays. The notion of consensus is extended to networks containing antagonistic interactions modeled by negative weights on the communication graph. A unified framework is established to address both the stationary and dynamic consensus issues in sampled-data settings. Using the reciprocally convex approach,a sufficient condition for consensus is derived in terms of matrix inequalities. Numerical examples are provided to illustrate the effectiveness of the proposed result. | Bo Hou Fuchun Sun Hongbo Li Guangbin Liu | 2015 | Tsinghua Science and Technology2015，20，2： | 3 |
| 10 | Sm-Nd isotope study and dating on Honguleleng ophiolite in Xinjiang, China显示文摘A study of the Sm-Nd isotope composition of Honguleleng ophiolite in Xinjiang, China, isochron age ((626±25)Ma),εNd(t) = 8.40,and its model age (TNdDM) in the range of 1 180-1 208 Ma, indicates that the ophiolite was formed in the late stage of the Upper Sinian. In combination with its facies association, petrochemistry, REE patterns, trace elements | Zhangdong Jin Jianhua Huang Fuchun Li | 1999 | Chinese Science Bulletin1999，44，20： | 2 |
| 11 | Advancing the incremental fusion of robotic sensory features using online multi-kernel extreme learning machine显示文摘 | Lele CAO Fuchun SUN Hongbo LI Wenbing HUANG | 2017 | Frontiers of Computer Science2017，11，2： | 2 |
| 12 | Attitude Control of Rigid Body with Inertia Uncertainty and Saturation Input显示文摘In this paper, the attitude control problem of rigid body is addressed with considering inertia uncertainty,bounded time-varying disturbances, angular velocity-free measurement, and unknown non-symmetric saturation input. Using a mathematical transformation, the effects of bounded time-varying disturbances, uncertain inertia,and saturation input are combined as total disturbances. A novel finite-time observer is designed to estimate the unknown angular velocity and the total disturbances. For attitude control, an observer-based sliding-mode control protocol is proposed to force the system state convergence to the desired sliding-mode surface; the finite-time stability is guaranteed via Lyapunov theory analysis. Finally, a numerical simulation is presented to illustrate the effective performance of the proposed sliding-mode control protocol. | Xi Ma Fuchun Sun Hongbo Li Bing He | 2017 | Tsinghua Science and Technology2017，22，1： | 2 |
| 13 | Both structure and function of human monoclonal antibodies contribute to enhancement of Zika virus infectivity in vitro显示文摘Dear Editor,Antibody-dependent enhancement(ADE)has long been recognized for dengue virus(DENV)in vitro and in vivo.It is now clear that antibodies to DENV can also enhance Zika virus(ZIKV)infection in vitro,and vice versa(Dejnirattisai et al.,2016;Stettler et al.,2016).The characteristics of enhancing antibodies,however,remain elusive.Some have suggested that non-neutralizing antibodies or antibodies recognizing specific antigenic sites are | Min Li Xin Wang Qihui Wang Lei Yu Lanfeng Wang Jinghua Yan Fuchun Zhang Linqi Zhang George F.Gao Xia Jin | 2017 | Science China(Life Sciences)2017，60，12： | 2 |
| 14 | Active anticorrosion and self-healing coatings:A review with focus on multi-action smart coating strategies显示文摘The development of smart coatings with potential for active anticorrosion and self-healing protection of metals is essential for long-term performance of metallic structures in aggressive chemical environments.Presently,emphasis has been placed on the development of advanced smart coatings for corrosion protection in different applications.Innovative multifunctional coatings with fascinating stimuliresponsive functionalities are considered“smart”.The stimuli-responsive functionalities of these smart coatings when properly harnessed result in a class of coatings with inherent autonomous control of corrosion.Fundamentally,when metals are exposed to aggressive environments,occurrences at the metalsolution interface cause environmental changes.These changes can be controlled when triggers from external environment set off active components of smart coating,thereby enhancing coating’s life and functionality.Common triggers include the availability of moisture,concentration of chloride ion,p H gradient,mechanical damage,impact,fatigue,light,redox activity and temperature.In this review,recent technological trends in active anticorrosion and self-healing coatings as functional routes for metal protection are summarized,stimuli responsiveness and mechanisms of inhibition are discussed,and recent multi-action protective systems are particularly focused on. | Inime Ime Udoh Hongwei Shi Enobong Felix Daniel Jianyang Li Songhua Gu Fuchun Liu En-Hou Han | 2022 | Journal of Materials Science & Technology2022，，21： | 2 |
| 15 | Runoff and nutrient losses in alfalfa(Medicago sativa L)production with tied-ridge-furrow rainwater harvesting on sloping land显示文摘Ridge-furrow rainwater harvesting(RFRH)is known to be effective in controlling water loss and soil erosion,and increasing soil moisture and crop yield in semiarid regions.However,it can cause water-logging,ridge overtopping,and harvest failure if not properly designed.A four consecutive-year field trial was carried out to assess the impacts of various slope gradients and tillage practices on soil moisture,runoff,sediment yield,associated soil nutrient losses,fodder yield,and water use efficiency(WUE)of alfalfa in the Loess Plateau,China.The trial adopted a split-plot design,taking slope gradient(5and 10)as main plot treatment and tillage practice(traditional tillage,open-ridging,and tied-ridging)as split-plot treatment,from 2015 to 2018.There were greater variations in runoff,sediment yield,and associ-ated soil nutrient losses than in fodder yield and WUE.Tied-ridging and open-ridging resulted in decreased runoff and reduced sediment transport and associated soil nutrient losses,and increased soil moisture,fodder yield,and WUE.Runoff,sediment transport,and associated soil nutrient losses inclined with increasing slope;while fodder yield and the WUE declined.For slopes of 5and 10,the average decrease in runoff,sediment yield,total nitrogen,total phosphorus,and organic matter losses for open-ridging were 47.7e56.2%,91.0e92.7%,90.4e93.1%,90.1e92.2%,and 88.9e90.2%,respectively,while these for tied-ridging were 62.4e68.4%,94.5e96.4%,93.6e95.5%,93.9e95.9%,and 93.0e94.9%,over 4 years as compared with traditional tillage.The mean annual runoff,sediment,total nitrogen,total phosphorus,and organic matter losses for slopes of 10were 1.31,1.96,1.87,1.99,and 1.64 times greater than the corresponding values for slopes of 5,respectively.The increase of fodder yield and WUE for open-ridging and tied-ridging was 40.1e45.6%and 16.0e17.5%,and 3.66e5.99 and 1.35e2.50 kg ha^(-1)mm^(-1),respectively,for slopes of 5and 10.The average fodder yield and WUE for slopes of 5were 1.19 and 1.23 times greater than corresponding values for slopes of 10,respectively.The disparities in fodder yield and WUE of alfalfa between slopes of 5and 10were not clear in dry years,but were evident in wet years.Tied-ridging was recommended for water and soil conservation,while open-ridging was recommended for increase of fodder yield and WUE of alfalfa.The implementation of RFRH in crop production should be evaluated by the use of a model in accordance with climatic conditions,soil type,and plant species. | Qi Wang Fuchun Li Xiaole Zhao Wucheng Zhao Dengkui Zhang Xujiao Zhou David JSample Xiaoyun Wang Qinglin Liu Xiaoling Li Guang Li Heling Wang Kai Zhang Jin Chen | 2022 | International Soil and Water Conservation Research2022，10，2： | 2 |
| 16 | Robot discrete adaptive control based on dynamic inversion using dynamical neural networks显示文摘 | Sun Fuchun Li Hanxiong Li Lei | 2002 | Automatica2002，38，11： | 1 |
| 17 | Cryptosporidium spp. in pet birds: Genetic diversity and potential public health significance显示文摘 | Meng Qi Rongjun Wang Changshen Ning Xiaoyu Li Longxian Zhang Fuchun Jian Yanru Sun Lihua Xiao | 2011 | Experimental Parasitology2011，，4： | 1 |
| 18 | Purification and characterization of a novel antifungal protein with antiproliferation and anti-HIV-1 reverse transcriptase activities from Peganum harmala seeds显示文摘新奇抗真菌的蛋白质,指定了为 PHP,从 Peganum harmala 的种子被孤立,由资源 S 列上的 cationic 交换层析和 Sephadex 75 10/300 GL 上的胶化过滤列。PHP 被发现形成大约 16 kDa 的 homodimer。等电位的集中 polyacrylamide 胶化电气泳动分析证明 PHP 的等电位的点是 8.4。PHP 的 N 终端 20-amino 酸顺序, ITCPQVTQSLAPCVPYLISG,在某些植物类似于非特定的类脂化合物转移蛋白质。PHP 展出了类脂化合物绑定活动。而且, PHP 对 Alternaria 替换物,毛丛 degitatum, Rhizopus stuolonifer,和 Magnaporthe grisea 施加了抗真菌的活动,并且它的抗真菌的活动在温度范围是稳定的 460 瑮晩湵慧 ? 牰瑯楥? 楷桴愠瑮灩潲楬敦慲楴湯愠摮愠瑮 ???? 敲敶獲? 牴湡 ' 諛 L 瑰獡 ? 捡楴楶楴獥映潲 ? 敐慧畮 ? 慨浲污 ?敳摥 s 瑮吗?? | Xiaojin Ma Dongliang Liu Haishu Tang Yan Wang Ting Wu Yang Li Jie Yang Jianhua Yang Surong Sun Fuchun Zhang | 2013 | Acta Biochimica et Biophysica Sinica2013，45，2： | 1 |
| 19 | Robot discrete adaptive control based on dynamic inversion using dynamical neural networks显示文摘 | SUN Fuchun LI Hanxiong LI Lei | 2002 | Automatica2002，38，： | 1 |
| 20 | The Motion Planets Detection and Tracking Algorithm Based on Gestalt Principle显示文摘The moving planets have a few of pixels which can lead to lacking enough image characteristics when tracking them. So we propose the motion planets detection and tracking algorithm based on gestalt principle. We structure Gaussian mixture model to detect the motion area from the visual cognition perspective, and use astronomy images graphics characteristics to confirm the planet position. Then we propose space-time fusion model for tracking planet. All the experiments use 1000 16-bitframe images of wide view CCD camera which contain 5684 motion planets in total. The results show that our algorithm reaches an accuracy of 94% and has robustness. | QIU Shi TANG Ying ZHANG Wenbo FENG Jun ZHANG Fuchun LI Chen | 2018 | Chinese Journal of Electronics2018，27，4： | 1 |
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