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49篇 您的检索式:作者名="Guoliang Yuan"
    题名 作者 年代 出处 被引量
1A review of flexible perovskite oxide ferroelectric films and their application显示文摘Many perovskite oxide ferroelectrics(e.g.PbZr_(1-x)Ti_(x)O_(3),BaTiO_(3),LiNbO_(3))are born with multitudinous robust performances and have been widely used in sensors,actuators,surface acoustic wave devices,and memories et al.However,their hardness,brittleness and harsh synthesis conditions(i.e.high temperature and oxygen ambience)restrain their application into flexible electronic devices which are significant components among the three pillars of modern society development,i.e.energy,information and materials.Here we review the preparation of flexible devices based on these oxide ferroelectrics,including transferring these freestanding films to flexible substrates after separating ferroelectric oxide films from the hard substrates,such as Si and SrTiO_(3) crystals,and also direct fabrication methods without transferring process.Subsequently,we summarize three kinds of representative flexible devices,i.e.flexible ferroelectric memories,sensors and generators.These inorganic electronics not only show excellent electric properties competitive with those corresponding electronics on hard substrates but also exhibit good flexibility similar to many organic flexible electronics.Wenxiu Gao Yi Zhu Yaojin Wang Guoliang Yuan Jun-Ming Liu 2020Journal of Materiomics2020,6,1:9
2声波激励的超小型纳机电系统磁电天线显示文摘当前的小型天线依赖于电磁波的谐振,因此天线的尺寸与电磁波波长相关。典型的天线尺寸大于波长的1/10,而进一步缩小天线尺寸在近十年来都是一个公开的挑战。介绍一种通过悬浮铁氧/压电薄膜异质结构的声波激励纳机械磁电天线。这种磁电天线通过其在声波谐振频率处的磁电效应接收和发射电磁波。磁电天线中的体声波激发铁磁薄膜的磁化振荡,产生电磁波的辐射;反之,天线感应电磁波的磁场,得到压电电压输出。这种磁电天线(尺寸仅为波长的千分之一)比现有小型天线的尺寸小1到2个数量级,但性能却没有降低,在便携式无线通信系统中具有很大的应用潜力。Tianxiang Nan Hwaider Lin Yuan Gao Alexei Matyushov Guoliang Yu Huaihao Chen Neville Sun Shengjun Wei Zhiguang Wang Menghui Li Xinjun Wang Amine Belkessam Rongdi Guo Brian Chen James Zhou Zhenyun Qian Yu Hui Matteo Rinaldi Michael E.McConney BrANDon M.Howe Zhongqiang Hu John G.Jones Gail J.Brown Nian Xiang Sun 张建强(翻译) 陈鼎鼎(审校) 2017通信对抗2017,36,4:8
3Toward artificial intelligent self-cooling electronic skins:Large electrocaloric effect in all-inorganic flexible thin films at room temperature显示文摘Intelligent robots have assisted mankind in achieving and operating thousands of functions,especially with the arrival of the artificial intelligent.However,heat dissipation and thermal management in the intelligent robots remain big challenges,which limit their miniaturization and performance.Electrocaloric(EC)materials,which exhibit temperature change in response to the application or withdrawal of an electric field,open a new strategy for cooling technology and have gained a flurry of research interest in recent years.Toward artificial intelligent self-cooling electronic skins,large-scale flexible materials with high EC effect near room temperature are in demand.Here,we report a large room temperature EC effect in flexible Pb_(0.82)Ba_(0.08)La_(0.1)Zr0.9Ti_(0.1)O_(3)(PBLZT)inorganic thin films via a transfer-free cost-effective sol-gel process,assisted by unique two-dimensional mica substrates.The maximum adiabatic temperature change and isothermal entropy change of the flexible PBLZT thin films reach to 22.5 K and 25.9 J K^(-1) kg^(-1) at room temperature.In particular,the flexible PBLZT thin films exhibit a stable EC effect both under bending state and after bending for 20000 times.Our flexible EC materials offer an alternative strategy to the development of cooling technologies for both artificial intelligent robots and personal wearable cooling devices.Ding Wang Xin Chen Guoliang Yuan Yanmin Jia Yiping Wang Arif Mumtaz Yaojin Wang Jun-Ming Liu 2019Journal of Materiomics2019,5,1:7
4Flexible memristors as electronic synapses for neuro- inspired computation based on scotch tape-exfoliated mica substrates显示文摘灵活 memristor 设备在便携计算机和集成电路由于他们的应用基于塑料底层吸引了可观的注意。然而,很塑料底层的 memristors 不能工作或在高温度的环境成年。在这研究, scotch-tape-exfoliated 云母被用作灵活 memristor 底层以便解决这些高温度的问题。我们的 TiN/ZHO/IGZO memristor,它被构造用一薄(10 m ) 云母底层,有优异灵活性和 thermostability。在把它弄弯 103 次以后,设备继续展出非凡的电的特征。它能也为在高、低的抵抗状态之间的转变被实现,甚至在多达 300Xiaobing Yan Zhenyu Zhou Jianhui Zhao Qi Liu Hong Wang Guoliang Yuan Jingsheng Chen 2018Nano Research2018,11,3:5
5Genome-wide prediction in a hybrid maize population adapted to Northwest China显示文摘Genome-wide prediction is a promising approach to boost selection gain in hybrid breeding.Our main objective was to evaluate the potential and limits of genome-wide prediction to identify superior hybrid combinations adapted to Northwest China.A total of 490 hybrids derived from crosses among 119 inbred lines from the Shaan A and Shaan B heterotic pattern were used for genome-wide prediction of ten agronomic traits.We tested eight different statistical prediction models considering additive(A)effects and in addition evaluated the impact of dominance(D)and epistasis(E)on the prediction ability.Employing five-fold cross validation,we show that the average prediction ability ranged from 0.386 to 0.794 across traits and models.Six parametric methods,i.e.ridge regression,LASSO,Elastic Net,Bayes B,Bayes C and reproducing kernel Hilbert space(RKHS)approach,displayed a very similar prediction ability for each trait and two non-parametric methods(random forest and support vector machine)had a higher prediction performance for the trait rind penetrometer resistance of the third internode above ground(RPR_TIAG).The models of A+D RKHS and A+D+E RKHS were slightly better for predicting traits with a relatively high non-additive variance.Integrating trait-specific markers into the A+D RKHS model improved the prediction ability of grain yield by 3%,from 0.528 to 0.558.Of all 6328 potential hybrids,selection of the top 44 hybrids would lead to a 6%increase in grain yield compared with Zhengdan 958,a commercially successful hybrid variety.In conclusion,our results substantiate the value of genome-wide prediction for hybrid breeding and suggest dozens of promising single crosses for developing high-yielding hybrids for Northwest China.Guoliang Li Yuan Dong Yusheng Zhao Xiaokang Tian Tobias Würschum Jiquan Xue Shaojiang Chen Jochen C.Reif Shutu Xu Wenxin Liu 2020The Crop Journal2020,8,5:4
6Comparison of the oncological,perioperative and functional outcomes of partial nephrectomy versus radical nephrectomy for clinical T1b renal cell carcinoma:A systematic review and metaanalysis of retrospective studies显示文摘Objective:To conduct a meta-analysis assessing the perioperative,functional and oncological outcomes of partial nephrectomy(PN)and radical nephrectomy(RN)for T1b tumours.The primary endpoints were the oncological outcomes.The secondary endpoints were the perioperative and functional outcomes.Methods:A systematic literature review was performed by searching multiple databases through February 2019 to identify eligible comparative studies according to the Preferred Reporting Items for Systematic Review and Meta-analysis statement.Identified reports were assessed according to the Newcastle-Ottawa Scale for nonrandomized controlled trials.Results:Overall,13 retrospective cohort studies were included in the analysis.Patients undergoing PN were younger(weighted mean difference[WMD]3.49 years,95%confidence interval[CI]5.16 to1.82;p<0.0001)and had smaller masses(WMD0.45 cm,95%CI0.59 to0.31;p<0.0001).There were no differences in the oncological outcome,which was demonstrated by progression-free survival(hazard ratio[HR]0.70;pZ0.22),cancerspecific mortality(HR 0.91;pZ0.57)and all-cause mortality(HR 1.01;pZ0.96).The two procedures were similar in estimated blood loss(WMD16.47 mL;pZ0.53)and postoperative complications(risk ratio[RR]1.32;pZ0.10),and PN provided better renal function preservation and was related to a lower likelihood of chronic kidney disease onset(RR 0.38;pZ0.006).Conclusion:PN is an effective treatment for T1b tumours because it offers similar surgical morbidity,equivalent cancer control,and better renal preservation compared to RN.Yucong Zhang Gongwei Long Haojie Shang Beichen Ding Guoliang Sun Wei Ouyang Man Liu Yuan Chen Heng Li Hua Xu Zhangqun Ye 2021Asian Journal of Urology2021,8,1:4
7Chinese expert consensus on conversion therapy for hepatocellular carcinoma(2021 edition)显示文摘Recent advances in systemic and locoregional treatments for patients with unresectable or advanced hepatocellular carcinoma(HCC)have resulted in improved response rates.This has provided an opportunity for selected patients with initially unresectable HCC to achieve adequate tumor downstaging to undergo surgical resection,a‘conversion therapy’strategy.However,conversion therapy is a new approach to the treatment of HCC and its practice and treatment protocols are still being developed.Review the evidence for conversion therapy in HCC and develop consensus statements to guide clinical practice.Evidence review:Many research centers in China have accumulated significant experience implementing HCC conversion therapy.Preliminary findings and data have shown that conversion therapy represents an important strategy to maximize the survival of selected patients with intermediate stage to advanced HCC;however,there are still many urgent clinical and scientific challenges for this therapeutic strategy and its related fields.In order to summarize and learn from past experience and review current challenges,the Chinese Expert Consensus on Conversion Therapy for Hepatocellular Carcinoma(2021 Edition)was developed based on a review of preliminary experience and clinical data from Chinese and non-Chinese studies in this field and combined with recommendations for clinical practice.Sixteen consensus statements on the implementation of conversion therapy for HCC were developed.The statements generated in this review are based on a review of clinical evidence and real clinical experience and will help guide future progress in conversion therapy for patients with HCC.Hui-Chuan Sun Jian Zhou Zheng Wang Xiufeng Liu Qing Xie Weidong Jia Ming Zhao Xinyu Bi Gong Li Xueli Bai Yuan Ji Li Xu Xiao-Dong Zhu Dousheng Bai Yajin Chen Yongjun Chen Chaoliu Dai Rongping Guo Wenzhi Guo Chunyi Hao Tao Huang Zhiyong Huang Deyu Li Gang Li Tao Li Xiangcheng Li Guangming Li Xiao Liang Jingfeng Liu Fubao Liu Shichun Lu Zheng Lu Weifu Lv Yilei Mao Guoliang Shao Yinghong Shi Tianqiang Song Guang Tan Yunqiang Tang Kaishan Tao Chidan Wan Guangyi Wang Lu Wang Shunxiang Wang Tianfu Wen Baocai Xing Bangde Xiang Sheng Yan Dinghua Yang Guowen Yin Tao Yin Zhenyu Yin Zhengping Yu Bixiang Zhang Jialin Zhang Shuijun Zhang Ti Zhang Yamin Zhang Yubao Zhang Aibin Zhang Haitao Zhao Ledu Zhou Wu Zhang Zhenyu Zhu Shukui Qin Feng Shen Xiujun Cai Gaojun Teng Jianqiang Cai Minshan Chen Qiang Li Lianxin Liu Weilin Wang Tingbo Liang Jiahong Dong Xiaoping Chen Xuehao Wang Shusen Zheng Jia Fan 2022Hepatobiliary Surgery and Nutrition2022,11,2:4
8Nutrient Composition of Different Foxtail Millet Seeds显示文摘Ten millet cultivars from China and abroad were analyzed for their crude fat,amylose and amylopectin,crude protein and amino acid content. A wide variation was observed in amylopectin contain,ranging from 54. 47% to 69. 26%,while amylose content ranged from 11. 26% to 23. 22%. The average crude fat in all cultivates was 3. 46%,and most cultivates ranged from 3. 1% to 3. 7%. Protein contents ranged from 8. 61% to 15. 54% with a mean value of 11. 94%. For amino acid composition,the ten cultivates were particularly rich in leucine,and the mean was 34. 57 mg/g. The millet cultivars were also high in glycine,glutamic acid and cysteine. Millet was known to be limiting in the essential amino lysine,and the mean was 5. 18 mg/g. Other amino acids,tyrosine,histidine and arginine were also very low in the ten cultivars. In general,significant nutrient composition differences were observed between the different millet cultivars,and A2( a kind of mother line of the hybrid millet) and hybrid millet registered a higher level of protein and amino acid composition which would be useful in millet breeding.Guangyu FAN Jincheng YUAN Lina ZHANG Xiaojie LIU Xiaoming WANG Feng WANG Xiaolei FENG Guoliang SONG Haiying ZHANG Qian WANG Zhihai ZHAO Yinghui LIU 2018Agricultural Biotechnology2018,7,5:4
9Tribological behavior of black phosphorus nanosheets as water-based lubrication additives显示文摘Black phosphorus(BP)with a layered structure has been used gradually as a lubrication additive in the tribological area.In this study,BP powders are produced via an easy method of high-energy ball milling using red phosphorus as a raw material.Subsequently,BP nanosheets are prepared via liquid exfoliation in N-methyl pyrolidone solvent.The tribological behavior of BP nanosheets as water-based lubrication additives(BP-WL)is evaluated under Ti6Al4V(TC4)/GCr15 contact.The results suggest that the 70 mg/L BP-WL sample exhibits excellent lubrication performance,whose coefficient of friction(COF)and ball wear rate reduced by 32.4%and 61.1%,respectively,compared with those of pure water.However,as the load increased,the tribological properties of BP-WL reduced gradually because of the agglomeration of BP nanosheets.Based on tribological experiments and worn surface analysis,boundary lubrication mechanisms are proposed.The friction reduced,which is primarily attributed to the low interlaminar shear and adsorption of BP nanosheets.In addition,a tribochemical reaction film comprising TiO_(2),Al_(2)O_(3),and Fe_(2)O_(3)effectively protects the surface of titanium alloy/steel from wear.This new water-based lubrication additive can be used to process titanium alloys.Qingjuan WANG Tingli HOU Wei WANG Guoliang ZHANG Yuan GAO Kuaishe WANG 2022Friction2022,10,3:3
10The genome of the recretohalophyte Limonium bicolor provides insights into salt gland development and salinity adaptation during terrestrial evolution显示文摘Halophytes have evolved specialized strategies to cope with high salinity.The extreme halophyte sea lavender(Limonium bicolor)lacks trichomes but possesses salt glands on its epidermis that can excrete harmful ions,such as sodium,to avoid salt damage.Here,we report a high-quality,2.92-Gb,chromosome-scale L.bicolor genome assembly based on a combination of Illumina short reads,single-molecule,real-time long reads,chromosome conformation capture(Hi-C)data,and Bionano genome maps,greatly enriching the genomic information on recretohalophytes with multicellular salt glands.Although the L.bicolor genome contains genes that show similarity to trichome fate genes from Arabidopsis thaliana,it lacks homologs of the decision fate genes GLABRA3,ENHANCER OF GLABRA3,GLABRA2,TRANSPARENT TESTA GLABRA2,and SIAMESE,providing a molecular explanation for the absence of trichomes in this species.We identified key genes(LbHLH and LbTTG1)controlling salt gland development among classical trichome homologous genes and confirmed their roles by showing that their mutations markedly disrupted salt gland initiation,salt secretion,and salt tolerance,thus offering genetic support for the long-standing hypothesis that salt glands and trichomes may share a common origin.In addition,a whole-genome duplication event occurred in the L.bicolor genome after its divergence from Tartary buckwheat and may have contributed to its adaptation to high salinity.The L.bicolor genome resource and genetic evidence reported in this study provide profound insights into plant salt tolerance mechanisms that may facilitate the engineering of salt-tolerant crops.Fang Yuan Xi Wang Boqing Zhao Xiaojing Xu Miao Shi Bingying Leng Xinxiu Dong Chaoxia Lu Zhongtao Feng Jianrong Guo Guoliang Han Haikuan Zhang Jianwei Huang Min Chen Bao-Shan Wang 2022Molecular Plant2022,15,6:3
11Convolutional Neural Network Based on Spatial Pyramid for Image Classification显示文摘A novel convolutional neural network based on spatial pyramid for image classification is proposed.The network exploits image features with spatial pyramid representation.First,it extracts global features from an original image,and then different layers of grids are utilized to extract feature maps from different convolutional layers.Inspired by the spatial pyramid,the new network contains two parts,one of which is just like a standard convolutional neural network,composing of alternating convolutions and subsampling layers.But those convolution layers would be averagely pooled by the grid way to obtain feature maps,and then concatenated into a feature vector individually.Finally,those vectors are sequentially concatenated into a total feature vector as the last feature to the fully connection layer.This generated feature vector derives benefits from the classic and previous convolution layer,while the size of the grid adjusting the weight of the feature maps improves the recognition efficiency of the network.Experimental results demonstrate that this model improves the accuracy and applicability compared with the traditional model.Gaihua Wang Meng Lu Tao Li Guoliang Yuan Wenzhou Liu 2018Journal of Beijing Institute of Technology2018,27,4:2
12Bio-inspired flexible vibration visualization sensor based on piezo-electrochromic effect显示文摘Monitoring structural vibration can provide quantitative information for both structural health evaluations and early-warning maintenance.The most classic vibration-based structural health monitoring is equipped with piezoelectric accelerometers,which is expensive and inconvenient due to cumbersome and time-consuming sensor installation and high power-consumptive data acquisition systems.One other main challenge with these systems is the inherent limitations for multi-point monitoring in critical elements with curvature due to their non-conformability.Here,inspired by the chameleon,we report a cost-effective,flexible and conformal,self-powered vibration sensor based on elasto-electro-chemical synergistic effect of piezoelectricity and electrochromism.The sensor can provide not only in-situ visualization,but also ex-situ recording of structural vibration due to the non-volatile color memory effect of electrochromism.The passive sensor system is composed of two distinct electronic components d ternary Pb(In1/2Nb1/2)O_(3)ePb(Mg1/3Nb2/3)O_(3)ePbTiO_(3)piezoelectric single crystal ribbon sensors and a solid-state tungsten trioxide electrochromic indicator driven by vibration-induced voltage generated by the piezoelectric ribbons.The proposed piezo-electrochromic based passive non-volatile visualization sensor may find diverse applications in structural health monitoring,smart wallpapers,and medical injury rehabilitation.Xuan Chen Laihui Luo Zhou Zeng Jie Jiao Mudassar Shehzad Guoliang Yuan Haosu Luo Yaojin Wang 2020Journal of Materiomics2020,6,4:2
13The corrosion behaviors of Mg-7Gd-5Y-1Nd-0.5Zr alloy under(NH4)_(2)SO_(4),NaCl and Ca(NO_(3))_(2)salts spray condition显示文摘The corrosion behaviors of Mg–7Gd–5Y–1Nd–0.5Zr alloys after T5 treatment under(NH4)_(2)SO_(4),NaCl and Ca(NO_(3))_(2)salt spray condition were investigated by weight loss rates,residual mechanical properties,scanning electron microscope(SEM),X-ray Diffraction(XRD)and potentiodynamic polarization tests.The corrosion degree of Mg–7Gd–5Y–1Nd–0.5Zr alloys in Ca(NO_(3))_(2)salt spray was very shallow by corrosion morphology and the corrosion route was extended along the surface in texture-like shape,while the alloy in NaCl and(NH4)_(2)SO_(4)salt spray were major local corrosion and there were serious corrosion pits on the surface.The weight loss rates in(NH4)_(2)SO_(4),NaCl and Ca(NO_(3))_(2)salt spray was respectively 0.4147,0.1618 and 0.0725 mg/(cm2 d−1).The results of residual mechanical properties indicated that the corrosion order in salts spray of Mg–7Gd–5Y–1Nd–0.5Zr alloys is NH4SO4>NaCl>Ca(NO_(3))_(2),which was consistent with the results of potentiodynamic polarization tests.The type of the salts will play a vital role in the initiation of the corrosion of EW75 alloy when they are used in the atmosphere environments.Inorganic salts with the smaller PH value after dissolution will have a stronger impact on the corrosion of EW75 magnesium alloys.Quantong Jiang Kui Zhang Xinggang Li Yongjun Li Minglong Ma Guoliang Shi Jiawei Yuan 2013Journal of Magnesium and Alloys2013,1,3:2
14Strontium isotope analysis of archaeological fauna at the Erlitou site显示文摘The Erlitou site is located at Yanshi City,Henan Province.This site is a large settlement site of Erlitou culture,and it is dated to 3800-3500 a BP.Five kinds of domestic animals,i.e.,dogs,pigs,sheep,goats,and cattle were found from the site.In this paper,two problems have emerged in studies involving the estimation of local isotope levels and the distinction of migrants from locals.Tooth enamel samples from 17 domestic animals individuals were analyzed for strontium isotope ratio(87Sr/86Sr),by the thermal ionization mass spectrometry,including 10 pigs,5 sheep and 2 cattle.The results show that the mean 87Sr/86Sr ratios of 10 pigs enamel samples were 0.712078,Based on the local strontium isotopes ratio range determined by the mean 87Sr/86Sr ratios ±2 of 10 pig enamel samples(0.712256-0.711900),we found that five sheep and one cattle from the Erlitou site fell well outside the local strontium isotopes ratio range and were considered to be non-local.ZHAO ChunYan YANG Jie YUAN Jing LI ZhiPeng XU Hong ZHAO HaiTao CHEN GuoLiang 2012Science China Earth Sciences2012,55,8:2
15External stimuli controlled multiferroic charge-transfer crystals显示文摘Multiferroic 费用转移晶体拉了重要兴趣由于他们的同时偶极并且订的纺纱。众多的理论、试验性的研究证明了在施主和领受人建筑群之间的分子的叠在调节费用转移起一个重要作用启用的 multifunctionality。此处,我们证明费用转移相互作用能被分离的栈控制,由 polythiophene 施主组成 -- 并且 fullerene 基于领受人的结合所有的块共聚物。房间温度磁场效果,铁电性,和各向异性的磁力在费用转移晶体被观察,它能被 photoexcitation 并且充电做进一步控制。而且,费用转移分离了栈晶体证明外部刺激控制了极化和磁化,它为所有器官的 multiferroics 开创他们的多功能的应用程序。Wei Qin Xiaomin Chen Jessica Lohrman Maogang Gong Guoliang Yuan Manfred Wuttig Shenqiang Ren 2016Nano Research2016,9,4:2
16Microstructure evolution,mechanical properties and creep mechanisms of Mg-12Gd-1MM-0.6Zr(wt%)magnesium alloy显示文摘In this research,the microstructure evolution,mechanical properties,and creep mechanisms of Mg-12 Gd-1 MM-0.6 Zr(wt%)alloy under different conditions were systematically studied using scanning electron microscopy(SEM),transmission electron microscopy(TEM),X-ray diffraction(XRD),and tensile creep tests.Regarding the microstructure of the as-cast sample,the average grain size is about 42μm,and the eutectic compounds were determined to be Mg_(5)(Gd_(0.8)MM_(0.2)).During homogenization,these eutectic compounds gradually dissolve,and Mg_(12)MM particles are precipitated.During hot extrusion,complete dynamic recrystallization(DRX)occurs,resulting in equiaxial grains with an average grain size of about 12μm and the formation of streamlines consisting of Mg_(12)MM particles along the extrusion direction(ED).After T5 treatment(225℃for 7 h),a large number ofβ'(Mg_(7)Gd)phases are precipitated on the{11-20}αhabit plane and are interconnected,forming an interlaced network structure.The ultimate tensile strength(R_(m)=405 MPa)and yield strength(R_(P0.2)=288 MPa)of the T5 sample are significantly higher than those of the as-extruded sample(R_(m)=289 MPa,R_(P0.2)=185 MPa),but the elongation(A=4%)was remarkably lower than that of the as-extruded sample(A=18%).When crept at225℃under 100 MPa,the steady-state creep rates of the as-cast,as-extruded,and T5 samples are1.59×10^(-8),1.08×10^(-8),and 1.40×10^(-8)s^(-1),respectively,and their total strains within 100 h are respectively breaking,0.81%,and 0.92%,indicating that the as-extruded alloy exhibits the best creep resistance.TEM analysis reveals that,during the creep process of the T5 sample,theβ'particles coarsen and the precipitate-free zones(PFZs)widen,which increase the steady-state creep rate and the total strain within 100 h as compared with the as-extruded sample.Bibo Li Kui Zhang Guoliang Shi Kaikun Wang Yongjun Li Xinggang Li Minglong Ma Jiawei Yuan 2021Journal of Rare Earths2021,39,5:2
17Wall pressure beneath a transitional hypersonic boundary layer over an inclined straight circular cone显示文摘Properties of wall pressure beneath a transitional hypersonic boundary layer over a 7°half-angle blunt cone at angle of attack 6°are studied by Direct Numerical Simulation.The wall pressure has two distinct frequency peaks.The low-frequency peak with f≈10−50 kHz is very likely the unsteady crossflow mode based on its convection direction,i.e.along the axial direction and towards the windward symmetry ray.Highfrequency peaks are roughly proportional to the local boundary layer thickness.Along the trajectories of stationary crossflow vortices,the location of intense high-frequency wall pressure moves from the bottom of trough where the boundary layer is thin to the bottom of shoulder where the boundary layer is thick.By comparing the pressure field with that inside a high-speed transitional swept-wing boundary layer dominated by the z-type secondary crossflow mode,we found that the high-frequency signal originates from the Mack mode and evolves into the secondary crossflow instability.Siwei Dong Jianqiang Chen Xianxu Yuan Xi Chen Guoliang Xu 2020Advances in Aerodynamics2020,2,1:2
18Characteristics of surface and atmospheric heating fields over Qinghai Xizang Plateau during the winter in 1982显示文摘Ji Guoliang Yao Lanchang Yuan Fumao 1986Scientia Sinica (Series B)1986,29,8:1
19Numerical analysis on the performance of solar chimney power plant system 显示文摘Xu Guoliang Ming Tingzhen Pan Yuan 2011Energy Conversion and Management2011,52,2:1
20The development of Bi Fe O_3-based ceramics显示文摘The multiferroic properties of Bi Fe O3-based ceramics were improved through optimizing their sintering method and doping with certain rare earth elements in pure Bi Fe O3. Some methods, especially liquid-phase sintering method has largely decreased the densities of oxygen vacancies and Fe2in Bi Fe O3-based ceramics, and thus their resistivity became high enough to measure the saturated polarization and the large piezoelectric d33 coefficient under the high electric field of [150 k V/cm. Besides,multiferroic properties were improved through the rare earth elements' doping in pure Bi Fe O3. Magnetization commonly increases with the proportional increase of Nd,La, Sm and Dy contents up to *30 %, while ferroelectric phase can transform to paraelectric phase at a certain proportion. An improved magnetoelectric coupling was often observed at ferroelectric phase with a relatively large proportion. Besides, an enhanced piezoelectric coefficient is expected in Bi Fe O3-based ceramics with morphotropic phase boundaries as they are already observed in thin epitaxial Bi Fe O3 films.Ahmad Hussain Xijun Xu Guoliang Yuan Yiping Wang Ying Yang Jiang Yin Junming Liu Zhiguo Liu 2014Chinese Science Bulletin2014,59,36:1
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