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| 1 | Mechanical performances and microstructural characteristics of reactive MgO-carbonated silt subjected to freezing-thawing cycles显示文摘The characteristics of reactive magnesia(MgO)-carbonated silt in respect to long-term stability have not been well understood in severely cold climate despite the usage of reactive MgO in enhancing the engineering performances.Under the binder content of 15%and initial water content of 25%,MgO-admixed silt specimens were carbonized for 3 h and 6 h and then subjected to different numbers of freezingthawing(F-T)cycles.After different F-T cycles,the physico-mechanical properties of MgO-carbonated silt were analyzed in comparison with Portland cement(PC)-stabilized silt through physical and unconfined compression tests.Besides,a series of micro tests on MgO-carbonated specimens was performed including X-ray diffraction(XRD),scanning electron microscopy(SEM)and mercury intrusion porosimetry(MIP)tests.The results demonstrate that both mass change ratio and moisture content of carbonated/stabilized silt decrease,and these values of MgO-carbonated silt are significantly lower while the density is higher compared to PC-stabilized silt.The strengths and moduli of MgO-carbonated silt are still two times higher than those of PC-stabilized specimens and the strength change ratio of keeps above0.8 after F-T cycles.There is no visible transformation between nesquehonite and dypingite/hydromagnesite,although the XRD peaks of nesquehonite decrease and the bonding and filling effects weaken slightly.After 6 and 10 F-T cycles,the pore-size characteristics changed from a unimodal distribution to a three-peak and bimodal distribution,respectively.The total,macro and large pore volumes increase obviously while the medium and small pore volumes decrease except for intra-aggregate pore.The findings show better F-T durability of MgO-carbonated silt,which would be helpful for facilitating the application of MgO carbonation in the soil treatment. | Guanghua Cai Songyu Liu Guangyin Du Zhen Chen Xu Zheng Jiangshan Li | 2021 | Journal of Rock Mechanics and Geotechnical Engineering2021，13，4： | 3 |
| 2 | Simulation-based optimization of control policy on multi-echelon inventory system for fresh agricultural products显示文摘As fresh agricultural products are perishable and vulnerable,reducing inventory cost is a strategic target for supply chain enterprises.How to design a reliable multi-echelon inventory control policy is still a great challenge.Therefore,the inventory cost of a three-level fresh agricultural products inventory system was firstly mathematically analyzed.Then,the simulation-based optimization model of the multi-echelon inventory system for fresh agricultural products was proposed by using the Flexsim simulation software and the improved particle swarm optimization algorithm.Finally,the multi-echelon inventory system is simulated based on a large number of survey data.Simulation results demonstrate that the proposed simulation-based optimization model of multi-echelon inventory system for fresh agricultural products can provide decision-making and technical support for the formulation of inventory control policy,and also it shows that the modeling of system simulation is an effective method to solve the problem of complex system. | Guangyin Xu Jihao Feng Fenglei Chen Heng Wang Zhenfeng Wang | 2019 | International Journal of Agricultural and Biological Engineering2019，12，2： | 2 |
| 3 | Bending-Induced Conductance Increase in Individual Semiconductor Nanowires and Nanobelts显示文摘Reliable ohmic contacts were established in order to study the strain sensitivity of nanowires and nanobelts.Significant conductance increases of up to 113%were observed on bending individual ZnO nanowires or CdS nanobelts.This bending strain-induced conductance enhancement was confirmed by a variety of bending measurements,such as using different manipulating tips(silicon,glass or tungsten)to bend the nanowires or nanobelts,and is explained by bending-induced effective tensile strain based on the principle of the piezoresistance effect. | Xiaobing Han Guangyin Jing Xinzheng Zhang Renmin Ma Xuefeng Song Jun Xu Zhimin Liao NingWang Dapeng Yu | 2009 | Nano Research2009，2，7： | 2 |
| 4 | Temperature Effect in (K_(0.5)Na_(0.5))_(0.2)(Sr_(0.75)Ba_(0.25))_(0.9)Nb_(2)0_(6): Cu Crystal Self-Pumped Phase-Conjugator显示文摘A reflectivity of 45%of the self-pumped phase-conjugate wave in (K_(0.5)Na_(0.5))_(0.2)(Sr_(0.75)Ba_(0.25))_(0.9)Nb_(2)0_(6)-Cn crystal at the environmental temperature T~70℃ has been obtained.The temperature effect in this kind of self-pumped phase-conjugator is studied. | XU Jingjun LIU Simin WU Yuanqing ZHANG Guangyin SUN Daliang SONG Yongyuan CHEN Huanchu | 1992 | Chinese Physics Letters1992，9，7： | 1 |
| 5 | Determination of the Li/Nb Ratio in LiNbO3 Crystals Prepared by Vapor Transport Equilibration Method 显示文摘 | Chen Yunlin Zhang Wanlin Shu Yongchun Lou Cibo Kong Yongfa Huang Ziheng Xu Jingjun and Zhang Guangyin | 2003 | Optical Materials2003，23，12： | 1 |
| 6 | Temperature variation of reaction liquid of ultrafine corn stover in photosynthetic hydrogen production显示文摘The thermo-physical phenomena existing in the process of hydrogen production by photosynthetic bacteria with ultrafine corn stover directly affect the energy consumption of biological hydrogen production system,the activity of hydrogen production,and hydrogen production rate.In order to discover theoretical basis for optimizing process parameters of the photosynthetic bioreactor for ultrafine corn stover,experimental investigation was conducted to identify the effects of the granularity of ultrafine corn stover on the temperature variation using a self-developed photosynthetic bio-hydrogen thermal-effect experimental device.This paper describes experimental research on temperature variation of reaction liquid with ultrafine-ground corn stover in photosynthetic hydrogen production,and on the temperature field and change trend of reaction liquid of corn stover with different granularities in bio-hydrogen production.Experimental results showed that,the greater the granularity of corn stover,the slower the temperature rising speed of the reaction liquid with corn stover in the initial phase of photosynthetic hydrogen production,and the lower the relative average temperature of reaction liquid in photosynthetic hydrogen production.This result is of great significance in research on the photosynthetic hydrogen production technology from biomass,providing a theoretical basis for thermal effect in solar photosynthetic hydrogen production. | Zhang Quanguo Wang Yingkuan Hu Jianjun Guo Jie Zhang Zhiping Jing Yanyan Xu Guangyin Wang Yi | 2014 | International Journal of Agricultural and Biological Engineering2014，7，5： | 1 |
| 7 | Tectonics and Seismicity of the Yarlung Tsangpo Grand Canyon Region显示文摘The Yarlung Tsangpo Grand Canyon region is located in the frontal zone of the eastern Himalayan syntaxis, where neo-tectonics and seismicity are intensive and closely related to each other. In the region, two sets of fault structures have developed, striking NNE-NE and NWW-NW, respectively. Investigation shows that they differ markedly in terms of scope, property, active times and intensity. The NWW-NW trending faults are large in size, and most are thrust and thrust strike-slip faults, formed in earlier times. The NEE-NE-strike faults are relatively small in size individually, with concentrated distribution, constituting the NNE-trending shear extensional fault zone, which is relatively younger with evident late Quaternary activities. Strong earthquakes occur mainly in the areas or zones of intensive differential movement of the Himalayas, e.g. along the deep and large fault zones around the crustal blocks. Most earthquakes of M≥7.0 are closely related to tectonics, where large-scale Holocene active faults are distributed with complicated fault geometry, or the faults of multiple directions intersect. Among them, earthquakes of M≥7.5 have occurred on the NW and NE-trending faults with a greater strike-slip component in the fault tectonic zones. | Shao Cuiru You Huichuan Cao Zhongquan Wang Chunyong Tang Fangtou Zhang Decheng Lou Hai Xu Guangyin Yang Qiyan Mei Tuo Xie Ping Yu Gang | 2009 | Earthquake Research in China2009，23，2： | 1 |
| 8 | Light-amplification competition betweenfanning noise and the signal beam in doped lithium niobate crystals显示文摘 | Guoquan Zhang Nouel Y Kamber Jingjun Xu Simin Liu Qian Sun Guangyin Zhang | 1999 | J Opt Soc Am B1999，16，6： | 1 |
| 9 | Photorefractive Self-Bending and High-Performance KNSBN:Cu Crystal Self-Pumped Phase-Conjugator显示文摘The mechanism for the high-performance KNSBN:Cu crystal self-pumped phase-conjugator is first put forward in this letter as no-loop photorefractive self-bending succesive four-wave mixing interaction.And the photore fractive backscattering amplification was found to play a very important role in it. | ZHANG Guangyin XU Jingjun WU Yuanqing LIU Simin SUN Daliang SONG Yongyuan CHEN Huanchu | 1992 | Chinese Physics Letters1992，9，1： | 1 |
| 10 | F/Cl比与Eu^(2+):BaFCl中F色心的浓度和光激励截面的关系显示文摘研究了Eu(2+):BaFxCl2在紫外线辐照下的光激励发光。通过改变激励方式及激励光的扫描方向,给出了Eu(2+):BaFxCl2-x光激励发光过程中,两种F色心的浓度比值与光激励截面比值的测定方法。利用这种测定方法,进一步研究了两种F色心的浓度比值和光激励截面比值与F/CI比值的关系。 | Wang Yongsheng Xiong Guangnan Xu Xurong Zhang Guangyin(Department of Physics,Nankai University Tianjin 300071)(Institute of Material Physics,Tianjin Institute of Technology,Tianjin 300191) | 1995 | 光学学报1995，15，7： | 1 |
| 11 | Light-amplification Coition between Fanning Noise and the Signal Beam in Doped Lithium Niobate Crystals 显示文摘 | Guoquan Zhang Nouel Kamber Y Jingjun Xu Simin Liu Qian Sun Guangyin Zhang | 1999 | J Opt Soc Am B1999，16，6： | 1 |
| 12 | Effect of Sputtering on Depositing Platinum by Focused Ion Beam显示文摘 | LIAO Zhimin XU Jun JING Guangyin YU Dapeng | 2006 | Chinese Journal of Electronics2006，15，3： | 0 |
| 13 | The strong cross relaxation of Er3+ and Yb3+ ions in the oxvfluoride glass ceramics显示文摘Oxyfluoride glass ceramic is a new up-conversion fluorescent material with the low phonon energy just like fluoride and the good mechanical stability like oxide. In the oxyfluoride glass ceramics co-doped with Er3+ and Yb3+ ions, the red radiation is dominant while it is excited by the violet light. But in the general fluorescent material, the green radiation is dominant because the multi-phonon relaxation occurs step by step. The strong cross relaxation process of Er3+ and Yb3+ ions is mainly responsible for enhancement of the red radiation intensity in the oxyfluoride glass ceramics. The increase of the red radiation intensity of Er3+ ions by the violet light excitation shows that the rare earth ions are doped into fluoride micro-crystals which are planted into oxide host in the oxyfluoride glass ceramics. | ZHANG Guangyin, ZHAO Lijuan, HOU Yanbing, XU Jingjun & SHANG Meiru1. Photonics Center, College of Physical Science, Nankai University, Tianjin 300071, China 2. Institute of Photon-Electron Technology, North Traffic University, Beijing 100044, China | 2000 | Chinese Science Bulletin2000，45，10： | 0 |
| 14 | Restoration and Amplification of Images Through Randomly-Moving Suspension Particles Using Photorefractive Two-Wave Mixing显示文摘Weak images,which pass through two kinds of suspension media with sizes of randomly-moving suspension particles about 0.05-0.1 cm and 0.01-0.001 cm respectively,are deteriorated by light scattering of particles,but restored and amplified effectively by two-wave mixing in photorefractive crystals with different time constants. | ZHANG Guangyin XU Jingjun LIU Simin MEN Liqiu LIU Junxnin | 1994 | Chinese Physics Letters1994，11，2： | 0 |
| 15 | Lens-Like Effect in LiNbO_(3) : Fe Photorefractive Crystal显示文摘The lens-like effects,both photorefractive effect and thermo-optical effect,were studied in the LiNbO_(3):Fe sheet.The threshold light intensity above which the photorefractive effect was overwhelmed b-v the thermal effect was determined and the thermo-optical coefficient dn/dT is evaluated by the Z-scanning method.The limiting characteristics of LiNbO_(3):Fe sheet is examined. | XU Jingjun LIU Junmin ZHANG Guangyin LIU Simin | 1993 | Chinese Physics Letters1993，10，5： | 0 |
| 16 | Seismic Zonation of Central-Southern Hunan Province, China显示文摘Based on basic data used in compiling the Zonation Map of Earthquake Ground Motion Parameters in China, recent research on seismic safety assessment for engineering sites in central-southern Hunan Province, the new attenuation relationships of moderate earthquakes and the background seismicity data obtained by modern instrumental earthquake records since 1970, a new result of seismic zonation of central-southern Hunan Province is provided. The result shows that the area with PGA=0.05g has obviously increased in the new map compared with the previous one and is relatively consistent with the seismic disaster characteristics of moderate earthquakes that took place in the central-southern part of Hunan in recent years. This result will benefit the research and compilation of a new-generation seismic zonation map of earthquake ground motion parameters and the seismic hazard assessment in the moderate earthquake active regions in the central and eastern part of China. | Li Ying Xu Guangyin Chen Kun Gao Mengtan | 2007 | Earthquake Research in China2007，21，4： | 0 |
| 17 | Transient-State and Steady-State Light-Induced Scattering in Photorefractive Crystal LiNbO_(3):Fe显示文摘We found that drift-length of light-excited electrons L0 has influence upon the light-induced scattering in LiNbO_(3):Fe crystal.We proposed that one of the necessary conditions for steady-state light-induced scattering is D>L0(where D is the illumination beam size). | LIU Junmin LIU Simin XU Jingjun ZHANG Guangyin XIONG Guisheng MEN Liqiu GUO Ru | 1994 | Chinese Physics Letters1994，11，5： | 0 |
| 18 | Study on the Activity of the Toupo Fault in Southern Anhui Province显示文摘The Toupo Fault, located in southern Anhui Province, strikes N60°~70°E in a linear route that is clear on satellitic image. It plays an important role in controlling the tectonics, geomorphology and distribution of Mesozoic-Cenozoic basins and strata. Detailed field investigation was carried out along the Toupo Fault to study its activity. Profiles, as well as a trench excavated reveal that the Quaternary super stratum above the fault had not been offset. The stratum was sampled and dated with TL methods to be the Mid-Pleistocene time, implying that the fault had been no longer active since then. Three stages can be divided since the fault was formed. The first stage is in the late Yanshan Movement, when the fault movement was of reversal strike-slipping and the tracks formed then are still clear today. The second stage is in the early Himalayan Movement—the late Cretaceous-early Tertiary, when the fault movement turned to be normal faulting and the southern wall became a tensile basin and received clastic sediment. The third stage is since the late Tertiary, when the tectonic movement was very weak. No late Tertiary sediments were formed and the Quaternary sediment was only as thick as ten meters. The geomorphology also suggested an aging form. Neither vertical nor horizontal displacement was evident along the Toupo Fault during this stage, though fault gouge dating suggested that the Toupo Fault might have been active during the Mid-Pleistocene. | Chen Wenbin Li Xiaojun Song Yisheng Pan Hua Huan Wenlin Xu Guangyin Jiang Hui You Huichuan | 2006 | Earthquake Research in China2006，20，1： | 0 |
| 19 | Highly efficient and aberration-free off-plane grating spectrometer and monochromator for EUV—soft X-ray applications显示文摘We demonstrate a novel flat-field,dual-optic imaging EUV—soft X-ray spectrometer and monochromator that attains an unprecedented throughput efficiency exceeding 60%by design,along with a superb spectral resolution ofλ/Δλ>200 accomplished without employing variable line spacing gratings.Exploiting the benefits of the conical diffraction geometry,the optical system is globally optimized in multidimensional parameter space to guarantee optimal imaging performance over a broad spectral range while maintaining circular and elliptical polarization states at the first,second,and third diffraction orders.Moreover,our analysis indicates minimal temporal dispersion,with pulse broadening confined within 80 fs tail-to-tail and an FWHM value of 29 fs,which enables ultrafast spectroscopic and pump-probe studies with femtosecond accuracy.Furthermore,the spectrometer can be effortlessly transformed into a monochromator spanning the EUV—soft X-ray spectral region using a single grating with an aberration-free spatial profile.Such capability allows coherent diffractive imaging applications to be conducted with highly monochromatic light in a broad spectral range and extended to the soft X-ray region with minimal photon loss,thus facilitating state-of-the-art imaging of intricate nano-and bio-systems,with a significantly enhanced spatiotemporal resolution,down to the nanometer–femtosecond level. | Jie Li Kui Li Xiaoshi Zhang Dimitar Popmintchev Hao Xu Yutong Wang Ruixuan Li Guangyin Zhang Jiyue Tang Jin Niu Yongjun Ma Runyu Meng Changjun Ke Jisi Qiu Yunfeng Ma Tenio Popmintchev Zhongwei Fan | 2024 | Light(Science & Applications)2024，13，1： | 0 |
| 20 | High formability Mg-Zn-Gd wire facilitates ACL reconstruction via its swift degradation to accelerate intra-tunnel endochondral ossification显示文摘After reconstructing the anterior cruciate ligament(ACL),unsatisfactory bone tendon interface healing may often induce tunnel enlargement at the early healing stage.With good biological features and high formability,Magnesium-Zinc-Gadolinium(ZG21)wires are developed to bunch the tendon graft for matching the bone tunnel during transplantation.Microstructure,tensile strength,degradation,and cytotoxicity of ZG21 wire are evaluated.The rabbit model is used for assessing the biological effects of ZG21 wire by Micro-CT,histology,and mechanical test.The SEM/EDS,immunochemistry,and in vitro assessments are performed to investigate the underlying mechanism.Material tests demonstrate the high formability of ZG21 wire as surgical suture.Micro-CT shows ZG21 wire degradation accelerates tunnel bone formation,and histologically with earlier and more fibrocartilage regeneration at the healing interface.The mechanical test shows higher ultimate load in the ZG21 group.The SEM/EDS presents ZG21 wire degradation triggered calcium phosphate(Ca-P)deposition.IHC results demonstrate upregulation of Wnt3a,BMP2,and VEGF at the early phase and TGFβ3 and Type II collagen at the late phase of healing.In vitro tests also confirmed the Ca-P in the metal extract could elevate the expression of Wnt3a,βcatenin,ocn and opn to stimulate osteogenesis.Ex vivo tests of clinical samples indicated suturing with ZG21 wire did not weaken the ultimate loading of human tendon tissue.In conclusion,the ZG21 wire is feasible for tendon graft bunching.Its degradation products accelerated intra-tunnel endochondral ossification at the early healing stage and therefore enhanced bone-tendon interface healing in ACL reconstruction. | Xuan He Ye Li Hongwei Miao Jiankun Xu Michael Tim-yun Ong Chenmin Wang Lizhen Zheng Jiali Wang Le Huang Haiyue Zu Zhi Yao Jie Mi Bingyang Dai Xu Li Patrick Shu-hang Yung Guangyin Yuan Ling Qin | 2024 | Journal of Magnesium and Alloys2024，12，1： | 0 |
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