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| 1 | Sedimentary architecture models of deepwater turbidite channel systems in the Niger Delta continental slope,West Africa显示文摘This paper studied an architecture model of turbidite channel systems based on the shallow- layer high resolution 3D seismic information in the deepwater area in the Niger Delta continental slope, West Africa as a prototype model. Different types of channel systems were identified and the corresponding architecture models were established. The controlling factors, evaluation criteria and spatial distribution of different channel systems were analyzed. This study shows that turbidite channel systems of West Africa could be classified into three types; confined, semi-confined and unconfined, according to the condition of canyon and the levees on both sides. On one hand, along the transport direction, channel system evolves from confined to unconfined. Within channel systems, channel complexes, including two types of incised and enveloped, are the most important reservoir bodies. On the other hand, there is a channel complex evolution from incised to enveloped vertically. The geological factors exert impacts of different levels on the architecture of the turbidite channels in different sedimentary systems or even within the same system. | Liu Li Zhang Tingshan Zhao Xiaoming Wu Shenghe Hu Jialiang Wang Xing Zhang Yikai | 2013 | Petroleum Science2013，10，2： | 16 |
| 2 | Research Progress on Heat Stress of Rice at Flowering Stage显示文摘Global warming has caused frequent occurrence of heat stress at the flowering stage of single-season rice in the Yangtze River region of China, which results in declines of spikelet fertility and yield in rice. Rice flowering stage is the most sensitive period to high temperatures, and therefore, the key for heat stress happening is the flowering stage coinciding with high temperature, which causes spikelet fertility decreasing in heat-sensitive varieties, and is the major factor for heat injury differences among various rice planting regions. With the development of rice breeding, temperature indexes for heat stress has been converted from daily maximum temperature of 35 oC to 38 oC with the stress duration of more than 3 d. During the flowering stage, anther dehiscence inhibition and low pollen shedding onto the stigma are two main reasons for spikelet fertility reduction under high temperatures. At panicle initiation stage, high temperatures aggravate spikelet degeneration, and destroy floral organ development. Various types of rice varieties coexist in production, and indica-japonica hybrid rice demonstrates the highest heat resistance in general, followed by indica and japonica rice varieties. In production, avoiding high temperature is the main strategy of preventing heat stress, and planting suitable cultivars and adjustment of sowing date are the most effective measures. Irrigation is an effective real-time cultivation measure to decline the canopy temperature during the rice flowering stage. We suggested that further study should be focused on exploring heat injury differences among different rice variety types, and innovating rice-planting methods according to planting system changes in rice planting regions with extreme heat stress. Meanwhile, high temperature monitor and warning systems should be improved to achieve optimal heat stress management efficiencies. | WANG Yaliang WANG Lei ZHOU Jianxia HU Shengbo CHEN Huizhe XIANG Jing ZHANG Yikai ZENG Yongjun SHI Qinghua ZHU Defeng ZHANG Yuping | 2019 | Rice science2019，26，1： | 13 |
| 3 | The role of maize root size in phosphorus uptake and productivity of maize/faba bean and maize/wheat intercropping systems显示文摘Interspecific root/rhizosphere interactions affect phosphorus (P) uptake and the productivity of maize/faba bean and maize/wheat intercropping systems. The aim of these experiments was to determine whether manipulation of maize root growth could improve the productivity of the two intercropping systems. Two near isogenic maize hybrids (the larger-rooted T149 and smaller-rooted T222) were intercropped with faba bean and wheat, under conditions of high- and low-P availability. The larger-rooted T149 showed greater competitive ability than the smaller-rooted T222 in both maize/faba bean and maize/wheat intercropping systems. The higher competitive ability of T149 improved the productivity of the maize/faba bean intercropping system in P-sufficient conditions. In maize/wheat intercropping systems, root growth, shoot biomass, and P uptake of maize were inhibited by wheat, regardless of the P-supply. Compared with T222, the larger-rooted T149 suffered less in the intercropping systems. The total biomass of the maize/wheat intercropping system was higher for wheat/T149 than for wheat/T222 under low-P conditions. These data suggested that genetic improvement of maize root size could enhance maize growth and its ability to compete for P resources in maize/faba bean and maize/wheat intercropping systems. In addition, depending on the P availability, larger maize roots could increase the productivity of intercropping systems. | ZHANG YiKai CHEN FanJun LI Long CHEN YanHua LIU BingRan ZHOU YuLing YUAN LiXing ZHANG FuSuo MI GuoHua | 2012 | Science China(Life Sciences)2012，55，11： | 13 |
| 4 | Higher PD-1 expression concurrent with exhausted CD8+ T cells in patients with de novo acute myeloid leukemia显示文摘Objective: To investigate the association between the T cell inhibitory receptor programmed death 1(PD-1)and T cell exhaustion status in T cells from patients with de novo acute myeloid leukemia(AML) and AML in complete remission(CR).Methods:Surface expression of PD-1 and the exhaustion and immunosenescence markers CD244 and CD57 on CD3+,CD4+ and CD8+ T cells from peripheral blood samples from 20 newly diagnosed,untreated AML patients and 10 cases with AML in CR was analyzed by flow cytometry.Twenty-three healthy individuals served as control.Results:A significantly higher percentage of PD-1+ cells were found for CD3+ T cells in the de novo AML group compared with healthy controls.In addition,an increased level of PD-1+ CD8+ T cells,but not PD-1+ CD4+,was found for CD3+ T cells in the de novo AML and AML-CR samples.A higher percentage of CD244+ CD4+,CD244+ CD8+,CD57+ CD4+ and CD57+ CD8+ T cells was found in CD3+ T cells in samples from those with de novo AML compared with those from healthy controls.Strong increased PD-1+ CD244+ and PD-1+ CD57+ coexpression was found for CD4+ and CD8+ T cells in the de novo AML group compared with healthy controls.Conclusions:We characterized the major T cell defects,including co-expression of PD-1 and CD244,CD57-exhausted T cells in patients with de novo AML,and found a particular influence on CD8+ T cells,suggesting a poor anti-leukemia immune response in these patients. | Jiaxiong Tan Shaohua Chen Yuhong Lu Danlin Yao Ling Xu Yikai Zhang Lijian Yang Jie Chen Jing Lai Zhi Yu Kanger Zhu Yangqiu Li | 2017 | Chinese Journal of Cancer Research2017，29，5： | 10 |
| 5 | Effect of driving conditions and suspension parameters on dynamic load-sharing of longitudinal-connected air suspensions显示文摘The objective of this research was to investigate the effects of driving conditions and suspension parameters on dynamic load-sharing of longitudinal-connected air suspensions of a tri-axle semi-trailer.A novel nonlinear model of a multi-axle semi-trailer with longitudinal-connected air suspension was formulated based on fluid mechanics and thermodynamics and was validated through test results.The effects of driving conditions and suspension parameters on dynamic load-sharing and road-friendliness of the semi-trailer were analyzed.Simulation results indicate that the road-friendliness metric-DLC(dynamic load coefficient) is not always in accordance with the load-sharing metric-DLSC(dynamic load-sharing coefficient).The effect of employing larger air lines and connectors on the DLSC optimization ratio gives varying results as road roughness increases and as driving speed increases.When the vehicle load reduces,or the static pressure increases,the DLSC optimization ratio declines monotonically.The results also indicate that if the air line diameter is always assumed to be larger than the connector diameter,the influence of air line diameter on load-sharing is more significant than that of the connector. | CHEN YiKai HE Jie KING Mark CHEN WuWei ZHANG WeiHua | 2013 | Chinese Science Bulletin2013，58，7： | 10 |
| 6 | Compact, submilliwatt, 2 × 2 silicon thermo-optic switch based on photonic crystal nanobeam cavities显示文摘We propose and experimentally demonstrate a 2×2 thermo-optic(TO) crossbar switch implemented by dual photonic crystal nanobeam(PCN)cavities within a silicon-on-insulator(SOI)platform.By thermally tuning the refractive index of silicon,the resonance wavelength of the PCN cavities can be red-shifted.With the help of the ultrasmall mode volumes of the PCN cavities,only~0.16 mW power is needed to change the switching state.With a spectral passband of 0.09 nm at the 1583.75 nm operation wavelength,the insertion loss(IL)and crosstalk(CT)performances were measured as IL(bar)=-0.2 dB,CT(bar)=-15 dB,IL(cross)=-1.5 dB,and CT(cross)=-15 dB.Furthermore,the thermal tuning efficiency of the fabricated device is as high as1.23 nm/mW. | HUANYING ZHOU CIYUAN QIU XINHONG JIANG QINGMING ZHU YU HE YONG ZHANG YIKAI SU RICHARD SOREF | 2017 | Photonics Research2017，5，2： | 8 |
| 7 | Root morphology in response to nitrogen supply in mid-season indica rice cultivars released in different decades显示文摘Dear Editor,Roots,as a major organ of plants,are involved in nutrient and water acquisition,and might play a vital role in yield increase and efficient N absorption with genetic improvement.Because of the great differences in growth period and pattern between the old and new rice cultivars,it is difficult to clarify how genetic improvements contribute to root growth in rice.For example,for a solution culture system,Wu et al.suggested that total root length increased with increasing year of release for maize hybrids,while shoot dry weight, | Yikai Zhang Huizhe Chen Yuping Zhang Jing Xiang Guangmei Ji Defeng Zhu | 2017 | Science China(Life Sciences)2017，60，4： | 7 |
| 8 | On-chip silicon photonic 2 × 2 mode-and polarization-selective switch with low inter-modal crosstalk显示文摘Mode-and polarization-division multiplexing offer new dimensions to increase the transmission capacity of optical communications. Selective switches are key components in reconfigurable optical network nodes. An on-chip silicon 2 × 2 mode-and polarization-selective switch that can route four data channels on two modes and two polarizations simultaneously is proposed and experimentally demonstrated for the first time, to the best of our knowledge. The overall insertion losses are lower than 8.6 d B. To reduce the inter-modal crosstalk, polarization beam splitters are added to filter the undesired polarizations or modes. The measured inter-modal andintra-modal crosstalk values are below-23.2 and-22.8 d B for all the channels, respectively. | YONG ZHANG YU HE QINGMING ZHU CIYUAN QIU YIKAI SU | 2017 | Photonics Research2017，5，5： | 7 |
| 9 | Decrement of Sugar Consumption in Rice Young Panicle Under High Temperature Aggravates Spikelet Number Reduction显示文摘Two rice genotypes Huanghuazhan(HHZ, heat-resistant) and IR36(heat-susceptible) were subjected to high-temperature(HT, 40℃) and normal-temperature(NT, 32℃) treatments at the spikelet differentiation stage. HT treatment inhibited spikelet differentiation, aggravated spikelet degeneration, reduced spikelet size, and disordered carbohydrate allocation. Meanwhile, HT treatment increased nonstructural carbohydrate content in leaves, but decreased that in stems and young panicles, and the same tendencies of sucrose and starch contents were observed in leaves and stem. However, HT treatment significantly increased the sucrose content and sharply decreased the glucose and fructose contents in young panicles. Lower activity levels of soluble acid invertase(EC3.2.1.26) and sucrose synthase(EC2.4.1.13) were observed under HT treatment. Moreover, HT treatment reduced the activities of key enzymes associated with glycolysis and the tricarboxylic acid cycle, which indicated sucrose consumption was inhibited in young panicles under HT treatment. Exogenous glucose and fructose applied under HT treatment increased the spikelet number more than exogenous sucrose. In conclusion, the results demonstrated that the reduction of spikelet number under high temperature was more affected by the decrease in sugar consumption than the blocking of sucrose transport. The impairment of sucrose hydrolysis was the main reason for the inhibition of sugar utilization. | WANG Yaliang ZHANG Yikai SHI Qinghua CHEN Huizhe XIANG Jing HU Guohui CHEN Yanhua WANG Xiaodan WANG Junke YI Zihao ZHU Defeng ZHANG Yuping | 2020 | Rice science2020，27，1： | 6 |
| 10 | A flexible multi-16QAM transmitter based on cascaded dual-parallel Mach-Zehnder modulator and phase modulator显示文摘In this paper,we propose a novel and flexible 16-quadrature amplitude modulation(16QAM) transmitter based on cascaded dual-parallel Mach-Zehnder modulator(DPMZM) and phase modulator(PM).The proposed transmitter is able to generate three types of 16QAM signals:square 16QAM,star 16QAM and four-amplitude-four-phase-16-QAM(FAFP-16QAM).The feasibility of the transmitter is verified through experiment,20-Gb/s eye diagrams of the 16QAM signals are obtained.In order to evaluate the performances of the 16QAM signals,simulations are also conducted using VPI Transmission Maker,clear constellations of 40-Gb/s 16QAM signals are achieved by coherent detection. | ZHANG Liang HU XiaoFeng CAO Pan ZHUANG ZhiMing JIANG XinHong SU YiKai | 2013 | Chinese Science Bulletin2013，58，7： | 3 |
| 11 | A trilogy antimicrobial strategy for multiple infections of orthopedic implants throughout their life cycle显示文摘Bacteria-associated infection represents one of the major threats for orthopedic implants failure during their life cycles.However,ordinary antimicrobial treatments usually failed to combat multiple waves of infections during arthroplasty and prosthesis revisions etc.As these incidents could easily introduce new microbial pathogens in/onto the implants.Herein,we demonstrate that an antimicrobial trilogy strategy incorporating a sophisticated multilayered coating system leveraging multiple ion exchange mechanisms and fine nanotopography tuning,could effectively eradicate bacterial infection at various stages of implantation.Early stage bacteriostatic effect was realized via nano-topological structure of top mineral coating.Antibacterial effect at intermediate stage was mediated by sustained release of zinc ions from doped CaP coating.Strong antibacterial potency was validated at 4 weeks post implantation via an implanted model in vivo.Finally,the underlying zinc titanate fiber network enabled a long-term contact and release effect of residual zinc,which maintained a strong antibacterial ability against both Staphylococcus aureus and Escherichia coli even after the removal of top layer coating.Moreover,sustained release of Sr2+and Zn2+during CaP coating degradation substantially promoted implant osseointegration even under an infectious environment by showing more peri-implant new bone formation and substantially improved bone-implant bonding strength. | Yikai Wang Wangsiyuan Teng Zengjie Zhang Xingzhi Zhou Yuxiao Ye Peng Lin An Liu Yan Wu Binghao Li Chongda Zhang Xianyan Yang Weixu Li Xiaohua Yu Zhongru Gou Zhaoming Ye | 2021 | Bioactive Materials2021，6，7： | 3 |
| 12 | BSA-seq-based identification of a major additive plant height QTL with an effect equivalent to that of Semi-dwarf 1 in a large rice F_(2) population显示文摘Bulked-segregant analysis is a time-and cost-saving strategy for identifying major quantitative trait loci(QTL) in a mapping population. Bulked-segregant analysis combined with whole-genome sequencing(BSA-seq) was performed to rapidly identify QTL for heading date, plant height, and panicle length in a large F_(2) population derived from two landraces: Chuan 7(C7) and Haoboka(HBK). Twenty plants with extremely low or high phenotypic values for the target traits were selected from an F_(2) population of 940 plants to construct low-and high-value bulks. Three pairs of bulks for the three traits were constructed, resulting in six DNA pools. BSA-seq revealed nine QTL: four for heading date, three for plant height, and two for panicle length. These QTL were validated in a random F_(2) population or BC_(4)F_(2) populations. The major novel plant height QTL, qPH8, acting additively with an effect equivalent to that of semi-dwarf 1(sd1), is potentially valuable for hybrid rice breeding. qPH8 controls mainly the elongation of basal internodes. The C7 allele of qPH8 reduces plant height and increases lodging resistance without yield penalty, suggesting a potential role for qPH8 in improving rice plant architecture. | Bo Zhang Feixiang Qi Gang Hu Yikai Yang Li Zhang Jianghu Meng Zhongmin Han Xiangchun Zhou Haiyang Liu Mohammed Ayaad Yongzhong Xing | 2021 | The Crop Journal2021，9，6： | 3 |
| 13 | Multi-channel 28-GHz millimeter-wave signal generation on a silicon photonic chip with automated polarization control显示文摘We propose and experimentally demonstrate an integrated silicon photonic scheme to generate multi-channel millimeter-wave(MMW) signals for 5 G multi-user applications. The fabricated silicon photonic chip has a footprint of 1.1 × 2.1 mm^2 and integrates 7 independent channels each having on-chip polarization control and heterodyne mixing functions. 7 channels of4-Gb/s QPSK baseband signals are delivered via a 2-km multi-core fiber(MCF) and coupled into the chip with a local oscillator(LO) light. The polarization state of each signal light is automatically adjusted and aligned with that of the LO light, and then 7 channels of 28-GHz MMW carrying 4-Gb/s QPSK signals are generated by optical heterodyne beating. Automated polarizationcontrol function of each channel is also demonstrated with ~7-ms tuning time and ~27-dB extinction ratio. | Ruiyuan Cao Yu He Qingming Zhu Jingchi Li Shaohua An Yong Zhang Yikai Su | 2019 | Journal of Semiconductors2019，40，5： | 2 |
| 14 | Genome-wide prediction for hybrids between parents with distinguished difference on exotic introgressions in Brassica napus显示文摘Extensive exotic introgression could significantly enlarge the genetic distance of hybrid parental populations to promote strong heterosis.The goal of this study was to investigate whether genome-wide prediction can support pre-breeding in populations with exotic introgressions.We evaluated seed yield,seed yield related traits and seed quality traits of 363 hybrids of Brassica napus (AACC) derived from two parental populations divergent on massive exotic introgression of related species in three environments.The hybrids presented strong heterosis on seed yield,which was much higher than other investigated traits.Five genomic best linear unbiased prediction models considering the exotic introgression and different marker effects (additive,dominance,and epistatic effects) were constructed to test the prediction ability for different traits of the hybrids.The analysis showed that the trait complexity,exotic introgression,genetic relationship between the training set and testing set,training set size,and environments affected the prediction ability.The models with best prediction ability for different traits varied.However,relatively high prediction ability (e.g.,0.728 for seed yield) was also observed when the simplest models were used,excluding the effects of the special exotic introgression and epistasis effect by5-fold cross validation,which would simplify the prediction for the trait with complex architecture for hybrids with exotic introgression.The results provide novel insights and strategies for genome-wide prediction of hybrids between genetically distinct parent groups with exotic introgressions. | Dandan Hu Yusheng Zhao Jinxiong Shen Xiangxiang He Yikai Zhang Yong Jiang Rod Snowdon Jinling Meng Jochen C.Reif Jun Zou | 2021 | The Crop Journal2021，9，5： | 2 |
| 15 | Non-blocking 2×2 switching unit based on nested silicon microring resonators with high extinction ratios and low crosstalks显示文摘In this paper,we propose and demonstrate a2 9 2 optical Benes switching unit based on two nested silicon microring resonators(MRRs)monolithically integrated on a silicon-on-insulator(SOI)wafer.High extinction ratios(ERs)of about 44.7/38.0 dB and low crosstalk values of about-37.5/-45.2 dB at cross/bar states are obtained with the fabricated device.The operation principle is theoretically studied and the switching function is verified by system demonstration experiments with 10 and12.5 Gb/s non-return-to-zero(NRZ)signals.The switching speed on the order of gigahertz based on free carrier effect in silicon is also experimentally demonstrated. | Jiayang Wu Xinhong Jiang Ting Pan Pan Cao Liang Zhang Xiaofeng Hu Yikai Su | 2014 | Chinese Science Bulletin2014，59，22： | 2 |
| 16 | All-optical silicon microring spiking neuron显示文摘With the rapid development of artificial intelligence and machine learning, brain-inspired neuromorphic photonics has emerged as an extremely attractive computing paradigm, promising orders-of-magnitude higher computing speed and energy efficiency compared to its electronic counterparts. Tremendous efforts have been devoted to photonic hardware implementations of mimicking the nonlinear neuron-like spiking response and the linear synapse-like weighting functionality. Here, we systematically characterize the spiking dynamics of a passive silicon microring neuron. The research of self-pulsation and excitability reveals that the silicon microring can function as an all-optical class Ⅱ resonate-and-fire neuron. The typical refractory period has been successfully suppressed by configuring the pump power above the perturbation power, hence allowing the microring neuron to operate with a speed up to roughly sub-gigahertz. Additionally, temporal integration and controllable inhibition regimes are experimentally demonstrated for the first time, to the best of our knowledge. Our experimental verification is obtained with a commercial CMOS platform, hence offering great potential for large-scale neuromorphic photonics integration. | Jinlong Xiang Yujia Zhang Yaotian Zhao Xuhan Guo Yikai Su | 2022 | Photonics Research2022，10，4： | 2 |
| 17 | In vitro antibacterial and osteogenic properties of plasma sprayed silver-containing hydroxyapatite coating显示文摘The objective of the present investigation was to characterize the antibacterial and osteogenic properties of plasma sprayed silver-containing hydroxyapatite (HA/Ag) coating in vitro. HA/Ag coating was deposited via vacuum plasma spraying. The concentration of silver ions released from HA/Ag coating, the efficacy of the HA/Ag coating against bacterial biofilm development, the effect of the HA/Ag coating on early adhesion and ossification of osteoblast cells in vitro was measured. The silver ion concentration released from the HA/Ag coating was between the minimum inhibitory concentration to bacteria and the cytotoxic concentration. Bacterial biofilm inhibition studies indicated an antibacterial activity on the HA/Ag coating surface when compared with hydroxyapatite (HA) coating alone. Moreover, it was demonstrated that osteoblast cell adhesion and mineralization occurred on the HA/Ag coating surface during the testing period. We conclude that the vacuum plasma sprayed HA/Ag coating possesses good antibacterial capability and osteogenic properties in vitro and represents a promising candidate for coating orthopedic implants. | RUAN HongJiang FAN CunYi ZHENG XueBin ZHANG Yan CHEN YiKai | 2009 | Chinese Science Bulletin2009，54，23： | 2 |
| 18 | High-efficiency and broadband four-wave mixing in a silicon-graphene strip waveguide with a windowed silica top layer显示文摘We experimentally demonstrate high-efficiency and broadband four-wave mixing in a silicon-graphene strip waveguide. A four-wave mixing conversion efficiency of -38.7 d B and a 3-dB conversion bandwidth of 35 nm are achieved in the silicon-graphene strip waveguide with an optimized light-graphene interaction length of 60 μm. The interaction length is controlled by a windowed area of silica layer on the silicon waveguide.Numerical simulations and experimental studies are carried out and show a nonlinear parameter γGOSas large as 10~4 W^(-1)· m^(-1). | YUXING YANG ZHENZHEN XU XINHONG JIANG YU HE XUHAN GUO YONG ZHANG CIYUAN QIU YIKAI SU | 2018 | Photonics Research2018，6，10： | 2 |
| 19 | Genetic architecture of maize yield traits dissected by QTL mapping and GWAS in maize显示文摘The study of yield traits can reveal the genetic architecture of grain yield for improving maize production.In this study, an association panel comprising 362 inbred lines and a recombinant inbred line population derived from X178 × 9782 were used to identify candidate genes for nine yield traits. High-priority overlap(HPO) genes, which are genes prioritized in a genome-wide association study(GWAS), were investigated using coexpression networks. The GWAS identified 51 environmentally stable SNPs in two environments and 36 pleiotropic SNPs, including three SNPs with both attributes. Seven hotspots containing 41 trait-associated SNPs were identified on six chromosomes by permutation. Pyramiding of superior alleles showed a highly positive effect on all traits, and the phenotypic values of ear diameter and ear weight consistently corresponded with the number of superior alleles in tropical and temperate germplasm. A total of 61 HPO genes were detected after trait-associated SNPs were combined with the coexpression networks. Linkage mapping identified 16 environmentally stable and 16 pleiotropic QTL.Seven SNPs that were located in QTL intervals were assigned as consensus SNPs for the yield traits.Among the candidate genes predicted by our study, some genes were confirmed to function in seed development. The gene Zm00001 d016656 encoding a serine/threonine protein kinase was associated with five different traits across multiple environments. Some genes were uniquely expressed in specific tissues and at certain stages of seed development. These findings will provide genetic information and resources for molecular breeding of maize grain yield. | Xiao Zhang Zhiyong Ren Bowen Luo Haixu Zhong Peng Ma Hongkai Zhang Hongmei Hu Yikai Wang Haiying Zhang Dan Liu Ling Wu Zhi Nie Yonghui Zhu Wenzhu He Suzhi Zhang Shunzong Su Yaou Shen Shibin Gao | 2022 | The Crop Journal2022，10，2： | 2 |
| 20 | Identification of differentially expressed genes in potato associated with tuber dormancy release显示文摘 | Bailin Liu Ning Zhang Yikai Wen Huaijun Si Di Wang | 2012 | Molecular Biology Reports2012，，12： | 1 |
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