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| 1 | Effects of high pressure on the microstructure and hardness of a Cu-Zn alloy显示文摘The microstructure of a Cu-Zn alloy treated under different high pressures was investigated by means of metallographic, scanning electron microscope (SEM), energy dispersive spectrometer (EDS), and X-ray diffraction (XRD), and the hardness of the Cu-Zn alloy was also measured. The results show that the α phase with a smaller grain size, different shapes, and random distribution appears in the Cu-Zn alloy during the solid-state phase transformation generation in the temperature range of 25-750°C and the pressure range of 0-6 GPa. The amount of residual α phase in the microstructure decreases and then increases with increasing pressure. Under a high pressure of 3 GPa, the least volume fraction of residual α phase was obtained, and under a high pressure of 6 GPa, the changes of the microstructure of the Cu-Zn alloy were not obvious. In addition, high pressure can increase the hardness of the Cu-Zn alloy, but it cannot generate any new phase. | ZHAO Juna LIU Lin YANG Jingru PENG Guirong LIU Jianhua ZHANG Ruijuna XING Guangzhong | 2008 | Rare Metals2008，27，5： | 18 |
| 2 | Gene cloning and expression of cadherin in midgut of Helicoverpa armigera and its Cry1A binding region显示文摘Cadherins belong to one of the families of animal glycoproteins responsible for cal-cium-dependent cell-cell adhesion. Recent literatures showed that the cadherin-like in midgut of several insects served as the receptor of Bt toxin Cry1A and the variation of cadherin-like is re-lated to insect’s resistance to Cry1A. The full-length cDNA encoding cadherin-like of Helicoverpa armigera is cloned by degenerate PCR and RACE techniques and the gene was designated as BtR-harm, which is 5581 bp in full-length, encoding 1730 amino acid residues (BtR-harm was deposited in GenBank and the accession number is AF519180). Its predicted molecular weight and isoelectric point were 195.39 kDa and 4.23, respectively. The inferred amino acid sequence includes a signal sequence, 11 cadherin repeats, a membrane-proximal region, a transmem-brane region and a cytoplasmic region. Sequence analysis indicated that the deduced protein sequence was most similar to the cadherin-like from Heliothis virescens with 84.2% identity and highly similar to three other lepidopteran cadherin from Bombyx mori, Manduca sexta and Pectinophora gossypiella, with the sequence identities of 60.3.6%, 57.5% and 51.0%, respec-tively. The cDNA encoding cadherin gene was expressed successfully in E. coli and the recom-binant proteins can bind with Cry1Ac. Truncation analysis and binding experiment of BtR-harm revealed that the Cry1A binding region was a contiguous 244-amino acid sequence, which lo-cated between amino acid 1217 and 1461. Semi-quantitative RT-PCR analysis showed that BtR-harm was highly expressed in midgut of H. armigera, very low expressed in foregut and hindgut and was not expressed in other tissues. After H. armigera producing resistance to Cry1Ac, the expression quantity of BtR-harm significantly decreased in midgut of H. armigera. It is the first confirmation that BtR-harm can function as receptor of Cry1Ac in H. armigera and the binding region was located on a contiguous 244 amino acid sequence, suggesting that the de-crease of expression quantity of BtR-harm is one of the main reasons for H. armigera resistance to Cry1Ac. | WANG Guirong WU Kongming LIANG Gemei GUO Yuyuan | 2005 | Science China(Life Sciences)2005，48，4： | 17 |
| 3 | 'Climate effect' of the northeast cold vortex and its influences on Meiyu显示文摘The Northeast Cold Vortex (NECV) is an important weather system in the middle and high latitudes in East Asia. Its time scale is synoptic, yet the frequent activities of NECV have significant 'climate effect' which influences not only the monthly temperature in the lower troposphere in Northeast China but also the Meiyu rainfall in East Asia. On the basis of ERA-40 reanalysis data provided by ECMWF, the 'climate effect' of NECV and its relationship with Meiyu in East Asia are studied. It is shown that there is significant correlation between NECV during the Meiyu period and rainfall amount: strong NECV corresponds to more Meiyu rainfall and weak NECV corresponds to less rainfall. In strong NECV years, the dry and cold air from the north is led to the south by NECV, converges with the lower-level warm and wet southwesterly on the north verge of Meiyu region, thus forms an unstable stratification of 'upper dryness and lower wetness' . Triggered by ascending motion, the Meiyu rainfall amount is more than usual. It is on the contrary in weak NECV years. The anomalous SST in north Pacific in the previ-ous year may be a factor that results in the anomalous NECV at Meiyu period. The land-sea thermal contrast in summer facilitates NECV, while that in winter inhibits NECV. All of the above provide a meaningful result for the short-term climate prediction of NECV and Meiyu. | HE JinHai WU ZhiWei JIANG ZhiHong MIAO ChunSheng HAN GuiRong | 2007 | Chinese Science Bulletin2007，52，5： | 12 |
| 4 | Wideband electromagnetic characteristics modeling and analysis of missile targets in ballistic midcourse显示文摘The wideband electromagnetic characteristics of missile targets in midcourse are the foundation of midcourse attack-defense confrontation.This paper proposes a novel electromagnetic scattering modeling method for midcourse targets based on a precise scattering center model,in which the nonideal scattering phenomenon,shielding effect and micro-motion are taken into consideration for the first time.Firstly,a precise scattering center model incorporating both the sliding scattering and anisotropic scattering is established.Then the change rule of the target attitude is generalized,and a checking method of the scattering center shielding effect is proposed for rotationally symmetric targets.Afterwards,a novel dynamic electromagnetic scattering model is presented,where the scattering center model updates along with the variation of the target attitude and can characterize the change of the electromagnetic characteristics of midcourse targets exactly.Finally,in light of the established model,the dynamic electromagnetic characteristics within different attitude angle bounds are analyzed by stages,and some useful conclusions are obtained.Experiment results from the measured data in anechoic chamber verify the validity of the proposed modeling method and relevant analysis. | XU ShaoKun LIU JiHong WEI XiZhang LI Xiang GUO GuiRong | 2012 | Science China(Technological Sciences)2012，55，6： | 11 |
| 5 | Risk analysis system of geo-hazard based on GIS technique显示文摘The socio-economic attribute of geo-hazard made us distinguish it fiom the traditional engineering geology study. It will get more social benefit from the analysis of the geo-hazard in the socio-economic attribute. The hazard and the vulnerability of the element controls the risk level of the regional geo-hazard. The risk analysis supported by GIS in geo-hazard study is one of the most important directions. Based on the author′s studies in recent years, a risk analysis system of regional geo-hazard (RiskAnly) has been developed on the basis of software MAPGIS. The paper introduces the train of system design, the structure and the workflow of RiskAnly. As a case study, the paper also deals with the risk zonation of the regional landslide hazard of China. | ZHU Liangfeng, ZHANG Guirong, YIN Kunlong, ZHANG Liang (1. Faculty of Engineering, China University of Geosciences, Wuhan 430074, China 2. China Research Institute of Land Resources and Economy, Beijing 101149, China) | 2002 | Journal of Geographical Sciences2002，12，3： | 11 |
| 6 | Parameter Estimation and Performance Analysis of Coherent Polarization Attributed Scattering Center Model显示文摘 | XU Shaokun WEI Xizhang LI Xiang GUO Guirong | 2013 | Chinese Journal of Electronics2013，22，1： | 9 |
| 7 | In-situ fabrication of particulate reinforced aluminum matrix composites under high-frequency pulsed electromagnetic field显示文摘Pulsed magnetic field is generated when imposing pulse signal on high-frequency magnetic field. Distribution of the inner magnetic intensity in induction coils tends to be uniform. Furthermore oscillation and disturbance phenomena appear in the melt. In-situ Al2O3 and Al3Zr particulate reinforced aluminum matrix composites have been synthesized by direct melt reaction using Al-Zr(CO3)2 components under a foreign field. The size of reinforced particulates is 2-3 μm. They are well distributed in the matrix. Thermodynamic and kinetic analysis show that high-frequency pulsed magnetic field accelerates heat and mass transfer processes and improves the kinetic condition of in-situ fabrication. | Guirong Li Yutao Zhao Qixun Dai Hongjie Zhang Hongming Wang | 2007 | Journal of University of Science and Technology Beijing2007，14，5： | 8 |
| 8 | High-efficiency and multiplex adenine base editing in plants using new TadA variants显示文摘Recently reported adenine base editors(ABEs)exhibit powerful potential for targeted gene correction as well as developing gain-of-function mutants and novel germplasms for both gene function studies and crop breeding.However,editing efficiency varies significantly among different target sites.Here,we investigated the activities of three evolved E.coli adenosine deaminase TadA variants(TadA8e,TadA8.17,and TadA8.20)side-by-side in transgenic rice.We found that TadA8e outperforms TadA8.17 and TadA8.20,and induces efficient A-to-G conversion at all tested sites in the rice genome,including those that were un-editable by ABE7.10 in our previous experiments.Furthermore,V82S/Q154R mutations were incorporated into TadA8e,resulting in a new variant that we named TadA9.Our data show that TadA9 is broadly compatible with CRISPR/SpCas9,CRISPR/SpCas9-NG,and CRISPR/SpRY,as well as CRISPR/ScCas9 nickase systems,achieving comparable or enhanced editing in a larger editing window at diverse PAM sites as compared with TadA8e.Finally,TadA9 was used to simultaneously install novel SNPs in four endogenous herbicide target genes in the commercial rice cultivar Nangeng 46 for potential field application in.weed control.Collectively,we successfully generated a series of novel ABEs that can efficiently edit adenosines in the rice genome.Our findings suggest that TadA9 and TadA8e have great potentials in the development of plant base editors and crop molecular breeding. | Daqi Yan Bin Ren Lang Liu Fang Yan Shaofang Li Guirong Wang Wenxian Sun Xueping Zhou Huanbin Zhou | 2021 | Molecular Plant2021，14，5： | 8 |
| 9 | Relationship with spatial memory in diabetic rats and protein kinase Cγ,caveolin-1 in the hippocampus and neuroprotective effect of catalpol显示文摘 | Zhou Haicheng Liu Jing Ren Liyuan Liu Wei Xing Qian Men Lili Song Guirong Du Jianling | 2014 | Chinese Medical Journal2014，，5： | 7 |
| 10 | Using acupoint-to-acupoint penetrative needling to treat poststroke spastic paralysis:a clinical progress review显示文摘OBJECTIVE: To determine the characteristics and advantages of acupoint-to-acupoint penetrative needling(AAPN) treatment for post-stroke spastic paralysis(PSSP) to improve the clinical outcomes of this disease in the future.METHODS: Randomized, controlled trials of PSSP patients receiving AAPN treatment were searched from MEDLINE, EMBASE, and China National Knowledge Infrastructure Database between January 2006 and June 2013. Key words included: clinic or clinical, acupuncture, needling, acupoint-to-acupoint, penetrative or penetration or penetrating,stroke or apoplexy or cerebral infarction or cerebral hemorrhage, spastic paralysis or spasticity or palsy,and hypermyotonia. Language was limited to English and Chinese. Case series reports, review articles, and animal studies were excluded.RESULTS: AAPN showed better clinical results on PSSP than other acupuncture treatments, especially when combined with adjunct therapies such as electroacupuncture, bloodletting, and rehabilitation. The greatest benefit was achieved with rehabilitation combined with penetration from Yang-channel acupoints to Yin-channel acupoints in the upper limbs, and from Yin-channel acupoints to Yang-channel acupoints in the lower limbs with a reinforcing maneuver.CONCLUSION: AAPN is an effective treatment for PSSP, and it can accelerate and enhance functional repair of PSSP patients. | Xiafei Liu Chunling Bao Guirong Dong | 2014 | Journal of Traditional Chinese Medicine2014，34，5： | 7 |
| 11 | A nonlinear POD reduced order model for limit cycle oscillation prediction显示文摘As the amplitude of the unsteady flow oscillation is large or large changes occur in the mean background flow such as limit cycle oscillation,the traditional proper orthogonal decomposition reduced order model based on linearized time or frequency domain small disturbance solvers can not capture the main nonlinear features.A new nonlinear reduced order model based on the dynamically nonlinear flow equation was investigated.The nonlinear second order snapshot equation in the time domain for proper orthogonal decomposition basis construction was obtained from the Taylor series expansion of the flow solver.The NLR 7301 airfoil configuration and Goland+ wing/store aeroelastic model were used to validate the capability and efficiency of the new nonlinear reduced order model.The simulation results indicate that the proposed new reduced order model can capture the limit cycle oscillation of aeroelastic system very well,while the traditional proper orthogonal decomposition reduced order model will lose effectiveness. | CHEN Gang *,LI YueMing & YAN GuiRong MOE Key Laboratory for Strength & Vibration,College of Aerospace,Xi’an Jiaotong University,Xi’an 710049,China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，7： | 7 |
| 12 | Effects of 4 GPa Pressure Heat Treatment on Thermal Physical Properties of the Cu-AI Alloy显示文摘 | Xiaoping Guan Mengmeng Cheng Guirong Peng Jianhua Liu Ruijun Zhang | 2011 | 材料科学与工程(中英文版)2011，5，4： | 6 |
| 13 | Climatological analysis and modeling of the ionospheric global electron content显示文摘In this paper, we calculate the ionospheric global electron content (GEC) from the GPS TEC data along the geographic longitude 120°E during the period of 1996-2004, and investigate the relationship be- tween GEC and 10.7 cm solar radio flux F10.7 and its seasonal dependence with partial correlation analysis. Our results show that GEC is closely correlated with solar activity index F10.7 and is also re- lated with annual and semiannual variations. An empirical GEC model driven by those factors is then to examine the influences of different solar activity proxies for the model input. The results suggest that GEC mainly depends on solar activity and the seasonal variations; the latter is also modulated by solar activity. Furthermore, the magnitude of semiannual variation is a little greater than that of annual varia- tion. Our empirical GEC model is proved to be better than the model proposed by Afraimovich et al. | SHE ChengLi WAN WeiXing XU GuiRong | 2008 | Chinese Science Bulletin2008，53，2： | 6 |
| 14 | Big data-enabled multiscale serviceability analysis for aging bridges显示文摘 | Yu Liang Dalei Wu Guirong Liu Yaohang Li Cuilan Gao Zhongguo John Ma Weidong Wu | 2016 | Digital Communications and Networks2016，2，3： | 5 |
| 15 | Additive manufacturing technologies of porous metal implants显示文摘Biomedical metal materials with good corrosion resistance and mechanical properties are widely used in orthopedic surgery and dental implant materials,but they can easily cause stress shielding due to the significant difference in elastic modulus between the implant and human bones.The elastic modulus of porous metals is lower than that of dense metals.Therefore,it is possible to adjust the pore parameters to make the elastic modulus of porous metals match or be comparable with that of the bone tissue.At the same time,the open porous metals with pores connected to each other could provide the structural condition for bone ingrowth,which is helpful in strengthening the biological combination of bone tissue with the implants.Therefore,the preparation technologies of porous metal implants and related research have been drawing more and more attention due to the excellent features of porous metals.Selective laser melting(SLM)and electron beam melting technology(EBM)are important research fields of additive manufacturing.They have the advantages of directly forming arbitrarily complex shaped metal parts which are suitable for the preparation of porous metal implants with complex shape and fine structure.As new manufacturing technologies,the applications of SLM and EBM for porous metal implants have just begun.This paper aims to understand the technology status of SLM and EBM,the research progress of porous metal implants preparation by using SLM and EBM,and the biological compatibility of the materials,individual design and manufacturing requirements.The existing problems and future research directions for porous metal implants prepared by SLM and EBM methods are discussed in the last paragraph. | Zhou Linxi Yang Quanzhan Zhang Guirong Zhao Fangxin Shen Gang Yu Bo | 2014 | China Foundry2014，11，4： | 5 |
| 16 | Detecting Primary Precursors of January Surface Air Temperature Anomalies in China显示文摘This study aims to detect the primary precursors and impact mechanisms for January surface temperature anomaly(JSTA) events in China against the background of global warming, by comparing the causes of two extreme JSTA events occurring in 2008 and 2011 with the common mechanisms inferred from all typical episodes during 1979–2008. The results show that these two extreme events exhibit atmospheric circulation patterns in the mid–high latitudes of Eurasia, with a positive anomaly center over the Ural Mountains and a negative one to the south of Lake Baikal(UMLB), which is a pattern quite similar to that for all the typical events. However, the Eurasian teleconnection patterns in the 2011 event, which are accompanied by a negative phase of the North Atlantic Oscillation, are different to those of the typical events and the 2008 event. We further find that a common anomalous signal appearing in early summer over the tropical Indian Ocean may be responsible for the following late-winter Eurasian teleconnections and the associated JSTA events in China. We show that sea surface temperature anomalies(SSTAs) in the preceding summer over the western Indian Ocean(WIO) are intimately related to the UMLB-like circulation pattern in the following January. Positive WIOSSTAs in early summer tend to induce strong UMLB-like circulation anomalies in January, which may result in anomalously or extremely cold events in China, which can also be successfully reproduced in model experiments. Our results suggest that the WIOSSTAs may be a useful precursor for predicting JSTA events in China. | Guirong TAN Hong-Li REN Haishan CHEN Qinglong YOU | 2017 | Journal of Meteorological Research2017，31，6： | 4 |
| 17 | Meta-Analysis:Prevalence of Food Allergy and Food Allergens—China, 2000−2021显示文摘What is already known about this topic?In recent decades,the prevalence of food allergy has increased worldwide;however,a comprehensive estimate of the prevalence of food allergy and allergens in China is not yet available.What is added by this report?By searching the English databases PubMed,Embase,Cochrane Library,and Chinese databases CNKI,Wanfang Data,and VIP Chinese epidemiological studies on food allergy,the probability of food allergy in China and related influencing factors were determined.What are the implications for public health practice?The findings of this study provide up-to-date estimates of the prevalence of food allergy rates in China in terms of age,gender,and the eight major food allergens. | Jiangzuo Luo Qiuyu Zhang Yanjun Gu Junjuan Wang Guirong Liu Tao He Huilian Che | 2022 | China CDC weekly2022，4，34： | 4 |
| 18 | Zero-Thermal Expansion and Heat Capacity of Zirconium Pyrovanadate Doped with Zirconia and Vanadium (V) Oxide显示文摘The dominant phase ZrV2O7 material, doped with zirconia and vanadium (V) oxide, was synthesized by solid state reaction and sol-gel methods. X-ray power diffraction patterns show that it is cubic structure. Thermal mechanic analysis measurements exhibit a zero-thermal expansion of this material above 150℃. Meanwhile, the heat capacity dependent on temperature, determined by differential scanning calorimetry, keeps in constant almost in the same temperature range. The relationship between unusual thermal expansion and abnormal heat capacity is discussed with Gruneisen parameter. | Xianran Xing, Zhenqi Zhu, Xinping Qiu, Guirong Liu (Dept. of Physical Chemistry University of Science and Technology Beijing, Beijing 100083, China Dept. of Chemistry, Tsinghua University, Beijing 100084, China) | 2001 | Rare Metals2001，20，1： | 4 |
| 19 | Molecular breeding of water lily: engineering cold stress tolerance into tropical water lily显示文摘Water lilies(order Nymphaeales)are rich in both economic and cultural values.They grow into aquatic herbs,and are divided into two ecological types:tropical and hardy.Although tropical water lilies have more ornamental and medicinal values compared to the hardy water lily,the study and utilization of tropical water lilies in both landscaping and pharmaceutical use is greatly hindered due to their limited planting area.Tropical water lilies cannot survive the winter in areas beyond 24.3°N latitude.Here,the transgenic pipeline through the pollen-tube pathway was generated for water lily for the first time.To improve cold stress tolerance of tropical water lilies,a gene encoding choline oxidase(CodA)driven by a cold stress-inducible promoter was transformed into a tropical water lily through the pollen-tube transformation.Six independent transgenic lines were tested for survival rate during two winter seasons from 2015 to 2017 in Hangzhou(30.3°N latitude).PCR and southern blot detection revealed that the CodA gene had been integrated into the genome.Reverse transcription PCR showed that CodA gene was induced after cold stress treatment,and further quantitative real-time PCR revealed different expressions among six 4 lines and line 3 had the highest expression.Multiple physiological experiments showed that after cold stress treatment,both the conductivity and malondialdehyde(MDA)levels from transgenic plants were significantly lower than those of non-transgenic plants,whereas the content of betaine and the activity of superoxide dismutase,catalase,and peroxidase were higher than those from non-transgenic plants.These results suggest that expression of exogenous CodA gene significantly improved the cold stress tolerance of tropical water lilies through a wide range of physiological alterations.Our results currently expanded a six-latitude cultivating area of the tropical water lilies.These results not only illuminate the bright future for water lily breeding but will also facilitate the functional genomic studies. | Cuiwei Yu Guirong Qiao Wenmin Qiu Dongbei Yu Shirong Zhou Yan Shen Guanchun Yu Jing Jiang Xiaojiao Han Mingying Liu Liangsheng Zhang Fei Chen Yuchu Chen Renying Zhuo | 2018 | Horticulture Research2018，5，1： | 4 |
| 20 | Nonuniform stretch processing for the range profile of a target with micro-motion显示文摘Complex motions such as micro-motions induce complex range-Doppler coupling effect in radar imaging. Hence, it is a challenge to reconstruct a clear range profile of a target with micro-motion. Stretch processing with fine motion compensation cannot perform well while it ties to eliminate the distortion of range profile caused by Doppler effect, because it is difficult to accurately estimate each scattering center velocity during coherent processing interval. Based on nonuniform stretch processing (NSP), a new technology is proposed to decouple range, time and Doppler and then achieve range profile of target with micro-motion. The new technology uses a new synthetic wide-band waveform and has an innovative mathematic interpretation. Statistical properties of the new approach are primarily examined. Typical models of target with micro-motion for high resolution radar are presented. Monte Carlo simulations demonstrate the performance of the new technology and the simulation results confirm our expectations. | CHEN Hangyong JIANG Weidong LIU Yongxiang LI Xiang GUO Guirong | 2006 | Progress in Natural Science:Materials International2006，16，11： | 4 |
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