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| 1 | A putative 6-transmembrane nitrate transporter OsNRT1.1b plays a key role in rice under low nitrogen显示文摘OsNRT1.1a is a low-affinity nitrate(NO_3^-) transporter gene. In this study, another mRNA splicing product, OsNRT1.1b,putatively encoding a protein with six transmembrane domains, was identified based on the rice genomic database and bioinformatics analysis. OsNRT1.1a/OsNRT1.1b expression in Xenopus oocytes showed OsNRT1.1a-expressing oocytes accumulated ^(15)N levels to about half as compared to OsNRT1.1bexpressing oocytes. The electrophysiological recording of OsNRT1.1b-expressing oocytes treated with 0.25 mM NO_3^- confirmed ^(15)N accumulation data. More functional assays were performed to examine the function of OsNRT1.1b in rice. The expression of both OsNRT1.1a and OsNRT1.1b was abundant in roots and downregulated by nitrogen(N) deficiency. The shoot biomass of transgenic rice plants with OsNRT1.1a or OsNRT1.1b overexpression increased under various N supplies under hydroponic conditions compared to wild-type(WT). The OsNRT1.1a overexpression lines showed increased plant N accumulation compared to the WT in 1.25 mM NH_4NO_3 and 2.5 mM NO_3^- or NH_4^+ treatments, but not in 0.125 mM NH_4NO_3.However, OsNRT1.1b overexpression lines increased total N accumulation in all N treatments, including 0.125 m M NH_4NO_3,suggesting that under low N condition, OsNRT1.1b would accumulate more N in plants and improve rice growth, but also that OsNRT1.1a had no such function in rice plants. | Xiaorong Fan Huimin Feng Yawen Tan Yanling Xu Qisong Miao Guohua Xu | 2016 | Journal of Integrative Plant Biology2016，58，6： | 21 |
| 2 | Endothelial Nitric Oxide Synthase Gene Intron 4, 27 bp Repeat Polymorphism and Essential Hypertension in the Kazakh Chinese Population显示文摘为了调查在 27 bp 之间的关系,在内含子 4in 重复多型性 endothelial 在 KazakhChinese 人口的氮的氧化物合酶( eNOS4 )基因和必要高血压,有必要高血压和 138 个健康的人的 151 个病人在 Xinjiang uygur 从 Shawan 区域的 Boertonggu 农村被选择中国 in2006 的自治区域。在二个组的 eNOS 的多型性与聚合酶链反应试金被检测,在每个组的遗传型频率是计算的跟随 Hardy-Weinberg 法律。Fourand 27 bp 重复的五辆双人脚踏车是被指明一 and “ b' 分别地。b/b, b/a 和 eNOS4 基因的 a/a 遗传型的频率在控制组是 84.06% , 15.22% 和 0.72% ,这被发现,并且 81.46% , 15.89% 和 2.65% 分别地在高血压组织。基因的频率一 and “ b' 在控制组是 91.67% 和 8.33% , 89.40% 和 10.60% 分别地在高血压组织。血浆 eNOS 活动没与 eNOS 基因的遗传型和等位基因被联系,这被发现。在高血压组的血浆 eNOS 活动显著地与控制组(P<0.01 ) 相比被减少。结果建议 eNOS4 基因多型性是不大可能的是为在 Xinjiang 哈萨克人口的必要高血压的主要基因危险性因素。然而,在血浆 eNOS 活动之间的一个积极协会和必要高血压被揭示了。 | Fengmei DENG Qinghua HU Bin TANG Fang HE Shuxia GUO Jiang CHEN Feng LI Xuehua WU Jun ZHANG Huimin ZHANG Juan ZHAO Hua ZHONG Ling HE Jun LI Le ZHANG Shuren WANG | 2007 | Acta Biochimica et Biophysica Sinica2007，39，5： | 18 |
| 3 | Analysis of sedimentary-geomorphologic variation and the living environment of hominids at the Shuidonggou Paleolithic site显示文摘Shuidonggou is one of the most important Upper Paleolithic sites in North China. Due to the presence of rich human remains,animal fossils,abundant sporopollen and unique geological sequence,it is the type site for Late Pleistocene to Holocene human occupation and environmental change in the Ningxia-Inner Mongolia region. Many scholars suggest that the site should be named the 'Shuidong-gou Formation' of Late Pleistocene in North China. Dating results indicate that ancient human activities at the site took place 30―24 ka (Marine Isotope Stage MIS 3). The climate at that time was warmer and moister than present day,and adequate precipitation led to the formation of water pack depressions where broad-leaf trees and sparse forest vegetations,as well as herbivorous animals flourished,mak-ing the area suitable for early human hunting,gathering and survival. The Neolithic human occupation happened 9―5 ka at the site,while similar environmental conditions with MIS3 occurred. The absence of human activity record in the region during the Last Glacial Maximum (MIS2) suggests that the envi-ronment was too harsh for humans to live there. | GAO Xing YUAN BaoYin PEI ShuWen WANG HuiMin CHEN FuYou FENG XingWu | 2008 | Chinese Science Bulletin2008，53，13： | 12 |
| 4 | Non‑noble Metal Electrocatalysts for the Hydrogen Evolution Reaction in Water Electrolysis显示文摘Water electrolysis is a sustainable approach for hydrogen production by using electricity from clean energy sources.However,both the hydrogen evolution reaction(HER)and the oxygen evolution reaction(OER)associated with water electrolysis are kinetically sluggish,leading to low efficiency in corresponding electrolysis devices.In addition,current electrocatalysts that can catalyze both HER and OER to practical rates require noble metals such as platinum that are low in abundance and high in price,severely limiting commercialization.As a result,the development of high-performance and cost-effective non-noble metal electrocatalysts to replace noble ones has intensified.Based on this,this review will comprehensively present recent research in the design,synthesis,characterization and performance validation/optimization of non-noble metal HER electrocatalysts and analyze corresponding catalytic mechanisms.Moreover,several important types of non-noble metal electrocatalysts including zero-dimensional,one-dimensional,two-dimensional and three-dimensional materials are presented with an emphasis on morphology/structure,synergetic interaction between metal and support,catalytic property and HER activity/stability.Furthermore,existing technical challenges are summarized and corresponding research directions are proposed toward practical application. | Huimin Wu Chuanqi Feng Lei Zhang Jiujun Zhang David P.Wilkinson | 2021 | Electrochemical Energy Reviews2021，4，3： | 7 |
| 5 | INTERVENTIONAI DIAGNOSIS AND TREATMENT OF VASCULOGENEIC PULSATILE TINNITUS显示文摘Objective To retrospectively study clinical features and diagnostic imaging of vasculogeneic pulsatile tinnitus, and the feasibility and efficacy of transvascular interventional treatment for this condition. Methods Data from 82 cases of arterial or venous pulsatile tinnitus were reviewed. DSA characteristics and possible pathophysiological mechanisms of pulsatile tinnitus in these cases were studied. Diagnoses in this group included intracranial arterovenous fistula(AVF)(n=3), spontaneous skull base dural AVF(n=16), traumatic carotid-cavernous sinus fistula(n=5), subclavian artery stenosis(n=2), internal carotid artery stenosis(n=3), intracranial arterial stenosis(n=1), kinked and/or elongated vertebrobasilar artery(n=2), venous sinus diverticulum(n=2), venous sinus stenosis on the dominant drainage side(n=46) and occipital sinus stenosis(n=2).Treatments included embolization and stenting using coils, NBCA glue, Balt balloons, self-expansion stents and intracranial micro-stents via either the femoral artery or femoral vein. Results Procedures were successful in all cases with no surgery-related complications. Tinnitus disappeared within 2 days after the procedure in all cases. Follow up duration was 5-36 months. Recurrence occurred in 4 cases of arterial tinnitus within 3 months following the initial procedure, which improved after revision embolization or symptom management. There was no recurrence in venous tinnitus cases following stent plastic or stent-coiling embolization treatments. Conclusions Endovascular intervention provides a new approach to the diagnosis and treatment of intractable pulsatile tinnitus. It is also effective in differentiating and studying other types of tinnitus. | LI Baomin CAO Xiangyu LIU Xinfeng LI Sheng WANG Jun LIANG Yongping GE Aili ZHANG Alan FENG Huimin | 2014 | Journal of Otology2014，9，1： | 6 |
| 6 | Theoretical Investigation on Mechanical and Thermal Properties of a Promising Thermal Barrier Material:Yb_3Al_5O_(12)显示文摘An investigation on the mechanical and thermal properties of Yb_3AI_5O_(12) is conducted by a combination of firstprinciples calculations and chemical bond theory calculation.Density functional theory(DFT) computations were performed for the structural,mechanical,and thermal properties,and the results are confirmed by chemical bond theory.Based on the calculated equilibrium crystal structure,heterogeneous bonding nature is revealed.The full set of elastic constants and mechanical properties of Yb_3AI_5O_(12) are presented for the first time.The thermal expansion coefficient of Yb_3AI_5O_(12) is calculated to be 7.5×10^(-6) K^(-1) by chemical bond theory.In addition,the minimum thermal conductivity of Yb_3AI_5O_(12) is estimated to be 1.22 W m^(-1)K^(-1),and the origin of such low thermal conductivity is discussed.Our theoretical results highlight the potential of Yb3AI5012 as a prospective thermal barrier coating material. | Yanchun Zhou Huimin Xiang Zhihai Feng | 2014 | Journal of Materials Science & Technology2014，30，7： | 5 |
| 7 | Cancer metabolism and tumor microenvironment:fostering each other?显示文摘The changes associated with malignancy are not only in cancer cells but also in environment in which cancer cells live.Metabolic reprogramming supports tumor cells’high demand of biogenesis for their rapid proliferation,and helps tumor cells to survive under certain genetic or environmental stresses.Emerging evidence suggests that metabolic alteration is ultimately and tightly associated with genetic changes,in particular the dysregulation of key oncogenic and tumor suppressive signaling pathways.Cancer cells activate HIF signaling even in the presence of oxygen and in the absence of growth factor stimulation.This cancer metabolic phenotype,described firstly by German physiologist Otto Warburg,ensures enhanced glycolytic metabolism for the biosynthesis of macromolecules.The conception of metabolite signaling,i.e.,metabolites are regulators of cell signaling,provides novel insights into how reactive oxygen species(ROS)and other metabolites deregulation may regulate redox homeostasis,epigenetics,and proliferation of cancer cells.Moreover,the unveiling of noncanonical functions of metabolic enzymes,such as the moonlighting functions of phosphoglycerate kinase 1(PGK1),reassures the importance of metabolism in cancer development.The metabolic,microRNAs,and ncRNAs alterations in cancer cells can be sorted and delivered either to intercellular matrix or to cancer adjacent cells to shape cancer microenvironment via media such as exosome.Among them,cancer microenvironmental cells are immune cells which exert profound effects on cancer cells.Understanding of all these processes is a prerequisite for the development of a more effective strategy to contain cancers. | Yiyuan Yuan Huimin Li Wang Pu Leilei Chen Dong Guo Hongfei Jiang Bo He Siyuan Qin Kui Wang Na Li Jingwei Feng Jing Wen Shipeng Cheng Yaguang Zhang Weiwei Yang Dan Ye Zhimin Lu Canhua Huang Jun Mei Hua-Feng Zhang Ping Gao Peng Jiang Shicheng Su Bing Sun Shi-Min Zhao | 2022 | Science China(Life Sciences)2022，65，2： | 5 |
| 8 | Preparation,mechanical,and thermal properties of a promising thermal barrier material:Y_(4)Al_(2)O_(9)显示文摘In our previous work,anisotropic chemical bonding,low shear deformation resistance,damage tolerance ability,low thermal conductivity,and moderate thermal expansion coefficient of Y_(4)Al_(2)O_(9)(YAM)were predicted.In this work,phase-pure YAM powders were synthesized by solid-state reaction between Y2O3 and Al_(2)O_(3)and bulk YAM ceramics were prepared by hot-pressing method.Lattice parameters and a new set of X-ray powder diffraction data were obtained by Rietveld refinement.The mechanical and thermal properties of dense YAM ceramics were investigated.The measured elastic moduli are close to the theoretical predicted values and the stiffness can be maintained up to 1400℃.The flexural strength and fracture toughness are 252.1±7.3 MPa and 3.36±0.20 MPa·m^(1/2),respectively.Damage tolerance of YAM was also experimentally proved.The measured average linear thermal expansion coefficient(TEC)of YAM is 7.37×10^(-6)K^(-1),which is very close to the theoretical predicted value.Using high-temperature X-ray diffraction(XRD)analysis,volumetric TEC is determined(23.37±1.61)×10^(-6)K^(-1)and the anisotropic TEC areaa=7.34×10^(-6)K^(-1),ab=7.54×10^(-6)K^(-1),andac=7.61×10^(-6)K^(-1). | Yanchun ZHOU Xinpo LU Huimin XIANG Zhihai FENG | 2015 | Journal of Advanced Ceramics2015，4，2： | 4 |
| 9 | Genomic insights into the ESBL and MCR-l-producing ST648 Escherichia coli with multi-drug resistance显示文摘多粘菌素由 multidrug 抵抗的克否定的病原体对严重感染充当避难处的一根最终的线。这个常规想法被活动 colistin 抵抗基因(mcr-1 ) 的最近的发现戏剧性地质问在食物动物和世界范围的人是流行的。更重要地, mcr-1 基因被发现与另外的抗菌素抵抗基因 co 局部性,提起可能性与平底锅药抵抗超级臭虫正在出现。然而,很少在 mcr-1-positive 的染色体上被报导细菌的主人水库。这里,我们报导三个人定序的染色体 mcr-1-positive Escherichia coli (E15004, E15015 和 E15017 ) 孤立并且通过细菌的比较 genomics 的分析定义一般特征。和顺序打字的进一步的 genomic 采矿允许我们阐明 MCR-1-carrying E。coli E15017 属于顺序类型 ST648 和 coproduces 扩大光谱的 -lactamase (ESBL ) 。给 ST648 与任何一个新德里 metallo 为伙伴所知的事实 -- lactamase 1 或 ESBL,我们的结果与 multidrug 电阻作为流行克隆加亮 ST648 的可能性。 | Huimin Zhang Christopher H. Seward Zuowei Wu Huiyan Ye Youjun Feng | 2016 | Science Bulletin2016，61，11： | 4 |
| 10 | Low-overpotential selective reduction of CO2 to ethanol on electrodeposited CuxAuy nanowire arrays显示文摘Direct electrochemical reduction of CO2 to multicarbon products is highly desirable, yet challenging. Here, we present a potentiostatic pulse-electrodeposition of high-aspect-ratio CuxAuy nanowire arrays (NWAs) as high-performance electrocatalysts for the CO2 reduction reaction (CO2RR). The surface electronic structure related to the Cu:Au ratio in the CuxAuy NWAs could be facilely modulated by controlling the electrodeposition potential and the as-fabricated CuxAuy NWAs could be directly used as the catalytic electrode for the CO2RR. The morphology of the high-aspect-ratio nanowire array significantly lowers the onset potential of the alcohol formation due to the diffusion-induced enhancement of the local pH and CO concentration near the nanowire surface. Besides, the properly adjusted surface electronic structure of the CuxAuy NWA enables the adsorption of CO and facilitates the subsequent CO reduction to ethanol via the C-C coupling pathway. Owing to the synergistic effect of morphology and electronic structure, the optimized CuxAuy NWA selectively reduces CO2 to ethanol at low potentials of -0.5——0.7 V vs. RHE with a highest Faradaic efficiency of 48%. This work demonstrates the feasibility to optimize the activity and selectivity of the Cu-based electrocatalysts toward multicarbon alcohols for the CO2RR via simultaneous adjustment of the electronic structure and morphology of the catalysts. | Weiwei Zhu Kuangmin Zhao Suqin Liu Min Liu Feng Peng Pengda An Binhao Qin Huimin Zhou Hongmei Li Zhen He | 2019 | Journal of Energy Chemistry2019，28，10： | 4 |
| 11 | Zircon U-Pb Ages and Hf Isotopes of Neoproterozoic Meta-Igneous Rocks in the Liansandao Area,Northern Sulu Orogen,Eastern China,and the Tectonic Implications显示文摘The Sulu Orogen preserves the Neoproterozoic tectonic-magmatic events,corresponding to the breaking up of the Rodinia supercontinent.The ages and petrogenesis of meta-igneous rocks in the Liansandao area in the northern Sulu Orogen are not well-constrained.This study reports zircon U-Pb ages and Hf isotopes of these rocks from the Liansandao area.Three meta-igneous rock samples give similar weighted mean 206 Pb/238 U ages of 744±11,767±12,and 762±15 Ma,respectively,indicating the Neoproterozoic crystallization ages.These rocks formed coevally with the Wulian and Yangkou intrusions that located along the Yantai-Qingdao-Wulian fault zone.The Neoproterozoic ages indicate that the meta-igneous rocks from the Liansandao area have affinity to the Yangtze Block.The three samples haveεHf(t)values of-7.2–-10.5,-6.0–-17.5,and-6.8–-12.0,respectively.These negativeεHf(t)values indicate a primarily crustal source.However,the widely variousεHf(t)values that are higher than the continental crust,suggesting magma mixing between mantle-derived materials and the continental crust or source heterogeneity.Combined with the Hf model ages and geochemical characteristics,the monzodiorite(sample LSD-2)is most likely to be mantle-derived magma then interacted with ancient continental crust,and the granitic protolith(samples LSD-1 and LSD-3)in the Liansandao area might derive from the re-melting of a Paleoproterozoic continental crust at^750 Ma,resulting from the upwelling and underplating of mantle-derived magma formed in an extensional setting due to the break-up of the Rodinia supercontinent. | Zhaojun Song Huimin Liu Fanxue Meng Xingyu Yuan Qiao Feng Dingwu Zhou Juan Ramon Vidal Romani Hongbo Yan | 2019 | Journal of Earth Science2019，30，6： | 4 |
| 12 | Synthesis,structure and optical properties of novel thermally robust Dy^(3+)-doped Ca_(9)Sc(PO_(4))_(7) phosphors for NUV-excited white LEDs显示文摘The powder samples of Ca_(9)Sc(PO_(4))_(7):xDy^(^(3+))white emitting phosphors were prepared via a solid state reaction technique.The Ca_(9)Sc(PO_(4))_(7):Dy^(3+)samples were researched by using the GSAS Rietveld refinement and X-ray diffraction(XRD) methods,and SEM images and elemental maps were recorded.Under 350 nm excitatio n,the emission spectra of Ca_(9)Sc(PO_(4))_(7):xDy^(3+)samples have two obvious peaks and one weak peak at 484,572 and660 nm,corresponding to the characteristic electron transitions of(^(4)F_(9/2)→ ^(6)H_(15/2),blue),(^(4)F_(9/2)→ ^(6)H_(13/2),yellow) and(^(4)F_(9/2)→ 6 H11/2,red),respectively.The concentration quenching effect,decay lifetime and thermal quenching of the as-synthesized Ca_(9)Sc(PO_(4))_(7):Dy^(3+)samples were researched systematically.The Ca_(9)Sc(PO_(4))_(7):0.02 Dy^(3+)phosphor possesses a good thermal stability,of which the emission intensity at 423 K can maintain 79% of the initial value(273 K).In addition,through the study of the chro maticity coordinates of the Ca_(9)Sc(PO_(4))_(7):0.02 Dy^(3+)phosphor,it is found that it is located in the white region,and the Commission Internationalede L’Eclairage(CIE) chromaticity coordinates are(0.339,0.389),The above results show that Ca_(9)Sc(PO_(4))_(7):xDy^(3+)phosphors can be excellent candidate material for applications in NUV-excited white LEDs. | Haiyan Wu Huimin Li Lihong Jiang Ran Pang Su Zhang Da Li Guanyu Liu Chengyu Li Jing Feng Hongjie Zhang | 2021 | Journal of Rare Earths2021，39，3： | 4 |
| 13 | Preparation and luminescence properties of orange-red Ba3Y4O9:Sm3+phosphors显示文摘A novel orange-red emitting Ba_3 Y_4 O_9:Sm^(3+) phosphors were prepared by a high temperature solidstate reaction in air. X-ray diffraction(XRD), photoluminescence spectra, fluorescence decay and temperature-dependent emission spectra were utilized to characterize the structure and luminescence properties. The results show that the excitation spectrum includes a series of linear peaks at350, 367, 382, 410, 424, 445, 470 and 495 nm, respectively. Under 410 nm excitation, the emission peaks were located at 574 nm(~4 G_(5/2)-~6 H_(5/2)), 608 nm(~4 G_(5/2)-~6 H_(7/2)),659 nm(~4 G_(5/2)-~6 H_(9/2)) and722 nm(~4 G_(5/2)-~6 H_(11/2)), respectively. The concentration quenching occurs when x equals 0.08 for Ba_3 Y_(4-x)O_9:xSm^(3+) phosphor and its mechanism is ascribed to the dipole-dipole interaction. The chromaticity coordinates of Ba_3 Y_(3.92)O_9:0.08 Sm^(3+) phosphor are in the orange-red region. The temperature-dependent study shows that this phosphor has excellent luminescence thermal-stability.And the luminescence intensity of Ba_3 Y_(3.92)O_9:0.08 Sm^(3+) phosphor at 473 K only declines by about25.75% of its initial intensity. The experimental data indicate that Ba_3 Y_4 O_9:Sm^(3+) phosphor may be promising as an orange-red emitting phosphor for white light emitting diodes. | Jiayu Li Ran Pang Zhan Yu Liyan Liu Haiyan Wu Huimin Li Lihong Jiang Su Zhang Jing Feng Chengyu Li | 2018 | Journal of Rare Earths2018，36，7： | 3 |
| 14 | Proliferation and differentiation into endothelial cells of human bone marrow mesenchymal stem cells (MSCs) on poly DL-lactic-co-glycolic acid (PLGA) films显示文摘The functional realization is the most important problem in vascular tissue engineering. The small-caliber blood vessel substitutes are prone to thrombi, which results in functional loss of blood vessels. However, this is probably due to the imper- fection of endothelial layer in the substitutes. In this study, MSCs were seeded on a series of porous PLGA films with various porosity and pore size made by sodium chloride (NaCl) particulate leaching, and cell proliferation on each film was inspected. The film made of the 75% (w/w) particulate proportion and 30―50 μm pore size maximized the proliferation rate and was chosen as the scaffolds for the differentia- tion of MSCs into endothelial cells. The induced cells expressed endothelial cells specific Flk-1, Ⅷ factor and CD34, possessed endothelial cells specific Weible-palade (W-P) body, and had the abilities of ingesting low density lipoprotein and secreting prostacyclin (PGI2). The results show that MSCs not only have the ideal biological compatibility with the porous PLGA films, but also have the potency of dif- ferentiating into functional endothelial cells, whichshould facilitate the endothelialization in vascular tissue engineering. | YUE Huimin ZHANG Lei WANG Yunfang LIANG Feng GUAN Lidong Li Shaoqing YAN Fang NAN Xue BAI Cixian LIN Feng YAN Yongnian PEI Xuetao | 2006 | Chinese Science Bulletin2006，51，11： | 3 |
| 15 | Theoretical prediction on mechanical and thermal properties of a promising thermal barrier material:Y_(4)Al_(2)O_(9)显示文摘The mechanical and thermal properties of Y_(4)Al_(2)O_(9)were predicted using a combination of first-principles and chemical bond theory(CBT)calculations.Density functional theory(DFT)computations were performed for the structural,mechanical,and thermal properties,and the results were confirmed by chemical bond theory.Based on the calculated equilibrium crystal structure,heterogeneous bonding nature has been revealed,i.e.,Al-O bonds are stronger than Y-O bonds.Low second-order elastic constants c44,c55,and c66 demonstrate the low shear deformation resistance.Low G/B ratio suggests that Y_(4)Al_(2)O_(9)is a damage tolerant ceramic.Y_(4)Al_(2)O_(9)shows anisotropy in elastic behavior based on the discussion of direction dependence of Young’s modulus.The hardness is predicted to be 10.2 GPa from calculated elastic moduli.The thermal expansion coefficient(TEC)calculated by chemical bond theory is 7.51×10^(-6)K^(-1).In addition,the minimum thermal conductivity of Y_(4)Al_(2)O_(9)is estimated to be 1.13 W·m^(-1)·K^(-1),and the thermal conductivity decreases with temperature as 1305.6/T. | Yanchun ZHOU Huimin XIANG Xinpo LU Zhihai FENG Zhongping LI | 2015 | Journal of Advanced Ceramics2015，4，2： | 3 |
| 16 | Characteristics of SARS-CoV-2 Delta variant-infected individuals with intermittently positive retest viral RNA after discharge显示文摘SARS-CoV-2-infected patients will be discharged when viral ribonucleic acid(RNA)is consecutively negative at least twice over a 24-h interval.However,we have demonstrated that positive retest viral RNA,a particular clinical phenomenon initially observed in discharged SARS-CoV-2-infected patients in early 2020[1,2],is the occasional reoccurrence of Polymerase Chain Reaction(PCR)-detectable viral RNA but not reinfection[3]. | Lu Li Jingyan Tang Zhiwei Xie Qingxin Gan Guofang Tang Zhongwei Hu Huimin Zeng Jingrong Shi Jiaojiao Li Yan Li Changwen Ke Min Kang Dan Liang Huan Lu Yuwei Tong Xilong Deng Jinxin Liu Hongzhou Lu Fuxiang Wang Fengyu Hu Feng Li Nanshan Zhong Xiaoping Tang | 2022 | National Science Review2022，9，10： | 3 |
| 17 | General Trends in Electronic Structure, Stability, Chemical Bonding and Mechanical Properties of Ultrahigh Temperature Ceramics TMB_2(TM=transition metal)显示文摘The electronic structure, stability, chemical bonding and mechanical properties of 3d, 4d and 5d transition metal diboride TMB2 were investigated using first-principles calculations based on density functional theory. All the primary chemical bonds, i.e., metallic, ionic and covalent have contributions to the bonding of TMB2. The number of valence electrons of transition metals or the valence electron concentration(VEC) of TMB2 has strong effects on the lattice parameters, stability and mechanical properties of TMB2. Both lattice constants a and c decrease with VEC, but c decreases faster than a, which is attributed to the enhanced TM de B p(sp2) bonding. Bulk modulus B of TMB2 increases continuously with VEC due to the enhanced TM de B p(sp2) and TM dd bonding. Shear modulus G increases with VEC,reaching a maximum at VEC=3.33, and then decreases with further increase of VEC. YB2 and Mn B2 have low Young's modulus and are predicted to have good thermal shock resistance. According to Pugh's criterion(G/B < 0.571), Mn B2, Mo B2 and WB2are predicted as ductile or damage tolerant ultrahigh temperature ceramics(UHTCs). | Yanchun Zhou Huimin Xiang Zhihai Feng Zhongping Li | 2015 | Journal of Materials Science & Technology2015，31，3： | 3 |
| 18 | An Efficient Multidimensional Fusion Algorithm for IoT Data Based on Partitioning显示文摘The Internet of Things (IoT) implies a worldwide network of interconnected objects uniquely addressable, via standard communication protocols. The prevalence of IoT is bound to generate large amounts of multisource, heterogeneous, dynamic, and sparse data. However, IoT offers inconsequential practical benefits without the ability to integrate, fuse, and glean useful information from such massive amounts of data. Accordingly, preparing us for the imminent invasion of things, a tool called data fusion can be used to manipulate and manage such data in order to improve process efficiency and provide advanced intelligence. In order to determine an acceptable quality of intelligence, diverse and voluminous data have to be combined and fused. Therefore, it is imperative to improve the computational efficiency for fusing and mining multidimensional data. In this paper, we propose an efficient multidimensional fusion algorithm for IoT data based on partitioning. The basic concept involves the partitioning of dimensions (attributes), i.e., a big data set with higher dimensions can be transformed into certain number of relatively smaller data subsets that can be easily processed. Then, based on the partitioning of dimensions, the discernible matrixes of all data subsets in rough set theory are computed to obtain their core attribute sets. Furthermore, a global core attribute set can be determined. Finally, the attribute reduction and rule extraction methods are used to obtain the fusion results. By means of proving a few theorems and simulation, the correctness and effectiveness of this algorithm is illustrated. | Jin Zhou Liang Hu Feng Wang Huimin Lu Kuo Zhao | 2013 | Tsinghua Science and Technology2013，18，4： | 3 |
| 19 | Bionic SERS chip with super-hydrophobic and plasmonic micro/nano dual structure显示文摘Natural surface-enhanced Raman spectroscopy(SERS) chips based on plants or insects have gained increased attention due to their facile characteristics and low costs. However, such chips remain a major challenge for practical application because of poor reproducibility and stability as well as unavoidable damage to the surface structure during coating metal and uncontrolled dehydration. By using a simple wrinkling method, we develop a new route to fabricate a low-cost bionic SERS chip for practical detection. Inspired by the taro leaf, we fabricate a SERS chip with a super-hydrophobic and plasmonic micro/nano dual structure, and its structure parameters can be optimized. Compared with the natural taro-leaf SERS chip, our artificial chip exhibits Raman signals with an order of magnitude higher sensitivity(~10^(-9)M) and enhancement factor(~10~7) under the illumination of weak laser radiation, demonstrating that our SERS chip has great potential in biological detection. The excellent performances of our bionic SERS chip are attributed to a synergy of optimized micro-wrinkle and nano-nest, which is verified by experiment and simulation. We believe our bionic chip could be a promising candidate in practical application due to its merits such as simple fabricating process, optimizable structure, low cost, excellent homogeneity, high sensitivity, and stability. | FENGYOU YANG HAORAN ZHANG HUIMIN FENG JIANJIE DONG CHUANG WANG QIAN LIU | 2018 | Photonics Research2018，6，2： | 3 |
| 20 | Timing of the terrestrial Permian-Triassic boundary biotic crisis:Implications from U-Pb dating of authigenic zircons显示文摘The Late Permian to Early Triassic transition represents one of the most important Phanerozoic mass extinction episodes. The cause of this event is still in debate between catastrophic and gradual mechanisms. This study uses the U-Pb method on zircons from the uppermost Permian/lowermost Triassic clay deposits at Chahe (Guizhou Province, SW China) to examine time constraints for this event. The results of both this and previous studies show that the ages of Bed 68a and 68c (the upper clay bed of the terrestrial Permian-Triassic boundary (PTB)) respectively are 252.6±2.8 and 247.5±2.8 Ma. This age (within the margin of error) almost accords with the upper clay bed (Bed 28) age of Meishan and the eruption age of Tunguss Basalt, and is so far the most accurate age obtained from terrestrial PTB. The claystone of Bed 68 was formed in the earliest Triassic. The biotic crisis occurred at nearly the same time in terrestrial and marine environments during Permian-Triassic interval; however the extinction patterns and processes are different. The extinction pattern of the terrestrial plants shows a major decline at the PTB after long-term evolution, followed by a retarded extinction of the relicts in the earliest Triassic. | YU JianXin LI HuiMin ZHANG SuXin YANG FengQing FENG QingLai | 2008 | Science China Earth Sciences2008，51，11： | 2 |
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