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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 | Experimental and numerical study of failure behavior and mechanism of coal under dynamic compressive loads显示文摘A comprehensive understanding of the failure behavior and mechanism of coal is a prerequisite for dealing with dynamic problems in mining space.In this study,the failure behavior and mechanism of coal under uniaxial dynamic compressive loads were experimentally and numerically investigated.The experiments were conducted using a split Hopkinson pressure bar(SHPB)system.The results indicated that the typical failure of coal is lateral and axial at lower loading rates and totally smashed at higher loading rates.The further fractography analysis of lateral and axial fracture fragments indicated that the coal failure under dynamic compressive load is caused by tensile brittle fracture.In addition,the typical failure modes of coal under dynamic load were numerically reproduced.The numerical results indicated that the axial fracture is caused directly by the incident compressive stress wave and the lateral fracture is caused by the tensile stress wave reflected from the interface between coal specimen and transmitted bar.Potential application was further conducted to interpret dynamic problems in underground coal mine and it manifested that the lateral and axial fractures of coal constitute the parallel cracks in the coal mass under roof fall and blasting in mining space. | Junjun Feng Enyuan Wang Qisong Huang Houcheng Ding Xiangyang Zhang | 2020 | International Journal of Mining Science and Technology2020，30，5： | 13 |
| 3 | Narrow-band radar imaging of spinning targets显示文摘According to the characteristics of narrow-band radar echoes from spinning targets,this paper applies the complex-valued back-projection method to image formation.Since it accumulates the sinusoidal phase of spinning scatterers effectively,this method can obtain high resolution imaging.The resolution and required radar pulse repetition frequency (PRF) of this method are deduced.For imaging of fast spinning targets,however,spurious peaks appear due to azimuth down sampling with a low PRF.Therefore,a signal model of azimuth down-sampled echoes is created according to the compressed sensing (CS) theory.Then an imaging method based on orthogonal matching pursuit (OMP) is proposed according to the sparsity nature of ISAR echoes.Finally,the effectiveness of the proposed methods is demonstrated using simulated data. | BAI XueRu SUN GuangCai WU QiSong XING MengDao BAO Zheng | 2011 | Science China(Information Sciences)2011，54，4： | 9 |
| 4 | Parameter estimation of moving targets in the SAR system with a low PRF sampling rate显示文摘In the synthetic aperture radar(SAR)system with low pulse repetition frequency(PRF)sampling,it is difficult for the motion parameters estimation of the moving targets,because of the Doppler spectrum ambiguity and Doppler centroid frequency ambiguity of the echo signals.Considering that moving targets are sparsely distributed in the observed scene,their positions and velocities can be reconstructed by using the compressed sensing(CS)technique.In this paper,the range-walk correction are implemented by the Keystone transform and the sparse range-walk correction(SRWC),then the CS technique is proposed to reconstruct motion parameters by processing the azimuth signals of the moving targets.Experiments using the simulated and real data are performed,and the results confirm the validity of the proposed method. | LIU Yan WU QiSong SUN GuangCai XING MengDao LIU BaoChang BAO Zheng | 2012 | Science China(Information Sciences)2012，55，2： | 5 |
| 5 | Enhanced Fracture Toughness of Pressureless-sintered SiC Ceramics by Addition of Graphene显示文摘To enhance the fracture toughness of pressureless-sintered Si C ceramic, graphene was introduced as an additive. The effects of graphene contents on the fracture toughness, bending strength, micro-hardness,phase compositions, and microstructure evolutions of the Si C ceramics were investigated in detail by scanning electron microscopy, energy dispersive X-ray spectroscopy, and metallographic microscopy. The fracture toughness, bending strength and micro-hardness increased initially, and then decreased with the graphene content increasing from 0 to 5.0 wt%. The highest fracture toughness of 5.65 MPa m1/2was obtained for sample with 1.0 wt% graphene sintered at 2130 °C for 1 h in Ar, which was about 22.6% higher than that of Si C sample without graphene. In addition, the highest bending strength and microhardness of 434.14 MPa and 29.21 GPa corresponded to the Si C samples with graphene content of 0.5wt% and 2.0 wt%, respectively. | Qisong Li Yujun Zhang Hongyu Gong Haibin Sun Wenjie Li Li Ma Yanshuang Zhang | 2016 | Journal of Materials Science & Technology2016，32，7： | 5 |
| 6 | Gene expression profile in immunologically injured liver cell of mice显示文摘To study the gene expression profiles between immunologically injured liver cell and normal liver cell of mice and to screen on a large scale the differentially expressed genes associated with the formation of liver injury,the experimental mice were randomly divided into the normal group for controlling and the immunologically liver-injured group induced by BCG and LPS.The liver mRNA of the two groups were extracted respectively and reversely-transcribed to cDNA with the incorpora-tion of different fluorescence(Cy3,Cy5) labeled dUTP as the hybridization probes.The mixed probes were hybridized to the cDNA microarray chips.The fluorescent signal results were acquired by scanner ScanArray 4000 and analyzed with software GenePix Pro 3.0.Among the 14112 target genes,293 genes were found to be significantly differentially expressed,in which 188 genes were up-regulated and 105 genes were down-regulated.Based on the analysis of biological functions of those differentially expressed genes,it was indicated that the occurrence and development of mouse liver damage induced by BCG and LPS were highly correlated with the processes of immune reac-tions,cell synthesis,metabolism,apoptosis and transportation in liver cell,which might be quite im-portant for elucidating the regulatory network of gene expression associated with the liver damage,also important for finally discovering the pathogenic mechanisms of immunological liver damage. | HAN Fengmei CHENG Ming XIA Qisong CHEN Yong | 2006 | Science China(Life Sciences)2006，49，5： | 3 |
| 7 | The expressions of Bcl-2 and Bax in gastric carcinoma and precancerous lesions显示文摘Objective: To study the expressions of Bcl-2 and Bax proteins and explore the relationships between them and apoptosis in gastric carcinoma and precancerous lesions. Methods: TUNEL method was used to detect apoptosis and im- munohistochemical staining method was used to detect the expressions of Bcl-2 and Bax proteins in 70 cases of chronic gastritis, 49 cases of intestinal metaplasia, 64 cases of dysplasia and 81 cases of gastric carcinoma. Results: The positive incidences of Bcl-2 and Bax were the highest in severe dysplasia. In intestinal metaplasia and dysplasia, positive incidences of Bcl-2 and Bax were higher than those in chronic gastritis and gastric carcinoma. During the process of evolvement from chronic gastritis to intestinal metaplasia then to dysplasia, apoptosis indexes gradually rise up to mid-high dysplasia, which reached the highest point, then it began to fall down, when it reached the lowest point in gastric carcinoma. There were nega- tive correlations between the expressions of Bcl-2, Bax proteins and apoptosis. Conclusion: The expression of Bcl-2 may be an early behavior in the gastric carcinogenesis. Bax had antagonistic effect to Bcl-2. Detections of Bcl-2 and Bax may be beneficial to the early diagnosis of gastric tumor and precancerous lesions. | Xinhao Yi Qisong Wu Huahui Li Jianmin Wu | 2008 | The Chinese-German Journal of Clinical Oncology2008，7，1： | 3 |
| 8 | Mesoporous carbon-supported cobalt catalyst for selective oxidation of toluene and degradation of water contaminants显示文摘 | Yuan Zhuang Qisong Lin Li Zhang Lianshun Luo Yuyuan Yao Wangyang Lu Wenxing Chen | 2016 | Particuology2016，14，1： | 3 |
| 9 | Effects of AlN on the densification and mechanical properties of pressureless-sintered SiC ceramics显示文摘In the present work, Si C ceramics was fabricated with Al N using B_4 C and C as sintering aids by a solid-state pressureless-sintered method. The effects of Al N contents on the densification, mechanical properties, phase compositions, and microstructure evolutions of as-obtained Si C ceramics were thoroughly investigated. Al N was found to promote further densification of the Si C ceramics due to its evaporation over 1800 °C,transportation, and solidification in the pores resulted from Si C grain coarsening. The highest relative density of 99.65% was achieved for Si C sample with 15.0 wt% Al N by the pressureless-sintered method at 2130 °C for 1 h in Ar atmosphere. Furthermore, the fracture mechanism for Si C ceramics containing Al N tended to transfer from single transgranular fracture mode to both transgranular fracture and intergranular fracture modes when the sample with 30.0 wt% Al N sintered at 1900 °C for 1 h in Ar. Also, Si C ceramics with 30.0 wt% Al N exhibited the highest fracture toughness of 5.23 MPa m^(1/2) when sintered at 1900 °C. | Qisong Li Yujun Zhang Hongyu Gong Haibin Sun Yanxia Zhai Weiya Zhu Jie Jing | 2016 | Progress in Natural Science:Materials International2016，26，1： | 2 |
| 10 | Multi-Robots path planning based on improved artificial potential field method显示文摘 | Hu Yulan Zhang Qisong | 2012 | Advanced Materials Research2012，，： | 1 |
| 11 | Bistatic SAR data focusing using an Omega-K algo- rithm based on method of series reversion 显示文摘 | LIU Baochang WANG Tong WU Qisong | 2009 | IEEE Trans Geosci Remote Sens2009，47，28： | 1 |
| 12 | A high precision CMOS weak current readout circuit显示文摘 | Wu Qisong Yang Haigang Yin Tao | | 0，，07： | 1 |
| 13 | Catalytic hydrothermal liquefaction of microalgae over metal incorporated mesoporous SBA-15 with high hydrothermal stability显示文摘Hydrothermal liquefaction(HTL)is one of the most promising technologies for conversion of microalgae,and catalysts with high hydrothermal stability are required for controllable HTL.In this article,SBA-15 incorporated with transition metals(Ni,Pd,Co and Ru)were synthetized via double-template method for catalytic HTL of microalgae.The results showed that metal incorporated SBA-15 represented high hydrothermal stability at 613 K.The incorporated Ni,Co and Ru was dispersed in SBA-15 enhancing the hydrothermal stability.The catalysts greatly influenced the chemical composition of the obtained bio-oil,which contained a higher percentage of furfural derivatives and a lower content of fatty acids and N-containing compounds,thus bio-oil quality was improved significantly.Higher hydrothermal stability and specific surface areas of Co-SBA-15 contribute to the highest preformation with 78.78%conversion and 24.11 wt%bio-oil yield.Metal incorporated SBA-15 provides a potential application for biomass conversion in high-temperature aqueous phase. | Yu Chen Kejing Wu Qisong Lin Yulong Wu Yin Tang Mingde Yang | 2018 | Carbon Resources Conversion2018，1，3： | 1 |
| 14 | A Simplified Method of Accurate Geometric Correction for NOAA AVHRR Data显示文摘 | Lu Feng Xu Jianmin Zhang Qisong | 2001 | Quarterly Journal of Applied Meteorology2001，12，4： | 1 |
| 15 | The secretory pathway and the actomyosin motility system are required for plasmodesmatal localization of the P7-1 of rice black-streaked dwarf virus显示文摘 | Zongtao Sun Shanglin Zhang Li Xie Qisong Zhu Zilong Tan Jing Bian Liying Sun Jianping Chen | 2013 | Archives of Virology2013，，5： | 1 |
| 16 | A New Look at the Loffeld's Bistatie Formula in Tandem Configuration 显示文摘 | Chen Shiehao Wu Qisong Zhou Peng | 2012 | IEEE Geoseienee and Remote Sensing Letters2012，9，1： | 1 |
| 17 | Reliability-based Robust Optimization Design Based on Specular Reflection Algorithm显示文摘 | Qisong Qi Jun Wang Gening Xu Xiaoning Fan | 2017 | 自动化学报2017，43，8： | 1 |
| 18 | EEMD and bidimensional RLS to suppress physiological interference for heterogeneous distribution in fNIRS study显示文摘Near-infrared spectroscopy(NIRS)can provide the hemodynamics information based on the hemoglobin concentration representing the blood oxygen metabolism of the cerebral cortical,which can be deployed for the cerebral function study.However,NIRS-based cerebral function detection accuracy can be signi¯cantly in°uenced by the physiological activities such as cardic cycle,respiration,spontaneous low-frequency oscillation and ultra-low frequency oscillation.The distribution difference of the capillary,artery and vein leads to the heterogeneity feature of the cerebral tissues.In the case that the heterogeneity is not serious,good detection accuracy and stable performance can be achieved through the regression analysis as the reference signal can well represent the interference in the measurement signal when conducting the multi-distance measurement approach.The direct use of the reference signal to estimate the interference is not able to achieve good performance in the case that the heterogeneity is serious.In this study,the cerebral function activity signal is extracted using recursive least square(RLS)method based on the multi-distance measurement method in which the reference signal is processed by ensemble empirical mode decomposition(EEMD)algorithm.The temporal and dimensional correlation of the neighboring sampling values are applied to estimate the interference in the measurement signal.Monte Carlo simulation based on a heterogeneous model is adopted here to investigate the effectiveness of this methodology.The results show that this methodology can effectively suppress the physiological interference and improve the detection accuracy of cerebral activity signal. | Yan Zhang Dan Liu Qisong Wang Xin Liu Chunling Yang Jinwei Sun Jingyang Lu Peter Rolfe | 2018 | Journal of Innovative Optical Health Sciences2018，，6： | 1 |
| 19 | Seismic collapse simulation of existing masonry buildings with different retrofitting techniques显示文摘Masonry buildings are primarily constructed out of bricks and mortar which become discrete pieces and cannot sustain horizontal forces created by a strong earthquake.The collapse of masonry walls may cause significant human casualties and economic losses.To maintain their integrity,several methods have been developed to retrofit existing masonry buildings,such as the constructional RC frame which has been extensively used in China.In this study,a new method using precast steel reinforced concrete(PSRC)panels is developed.To demonstrate its effectiveness,numerical studies are conducted to investigate and compare the collapse behavior of a structure without retrofitting,retrofitted with a constructional RC frame,and retrofitted with external PSRC walls(PSRCW).Sophisticated finite element models(FEM)were developed and nonlinear time history analyses were carried out.The results show that the existing masonry building is severely damaged under occasional earthquakes,and totally collapsed under rare earthquakes.Both retrofitting techniques improve the seismic performance of existing masonry buildings.However,it is found that several occasional earthquakes caused collapse or partial collapse of the building retrofitted with the constructional RC frame,while the one retrofitted by the proposed PSRC wall system survives even under rare earthquakes.The effectiveness of the proposed retrofitting method on existing masonry buildings is thus fully demonstrated. | Ge Dongdong Du Chunbo Miao Qisong Chen Xi | 2021 | Earthquake Engineering and Engineering Vibration2021，20，1： | 1 |
| 20 | The design and manufacture of copper-clad-aluminum communication eable显示文摘 | Huai Ping Cheng Qisong | 2007 | Wire and Cable2007，2，： | 1 |
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