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| 1 | Directly patterned substrate-free plasmonic “nanograter” structures with unusual Fano resonances显示文摘The application of three-dimensional(3D)plasmonic nanostructures as metamaterials(MMs),nano-antennas,and other devices faces challenges in producing metallic nanostructures with easily definable orientations,sophisticated shapes,and smooth surfaces that are operational in the optical regime and beyond.Here,we demonstrate that complex 3D nanostructures can be readily achieved with focused-ion-beam irradiation-induced folding and examine the optical characteristics of plasmonic“nanograter”structures that are composed of free-standing Au films.These 3D nanostructures exhibit interesting 3D hybridization in current flows and exhibit unusual and well-scalable Fano resonances at wavelengths ranging from 1.6 to 6.4 mm.Upon the introduction of liquids of various refractive indices to the structures,a strong dependence of the Fano resonance is observed,with spectral sensitivities of 1400 nm and 2040 nm per refractive index unit under figures of merit of 35.0 and 12.5,respectively,for low-order and high-order resonance in the near-infrared region.This work indicates the exciting,increasing relevance of similarly constructed 3D free-standing nanostructures in the research and development of photonics and MMs. | Ajuan Cui Zhe Liu Jiafang Li Tiehan H Shen Xiaoxiang Xia Zhiyuan Li Zhijie Gong Hongqiang Li Benli Wang Junjie Li Haifang Yang Wuxia Li Changzhi Gu | 2015 | Light(Science & Applications)2015，4，1： | 8 |
| 2 | Computational fluid dynamics evaluation of the effect of different city designs on the wind environment of a downwind natural heritage site显示文摘Disturbance in wind regime and sand erosion deposition balance may lead to burial and eventual vanishing of a site.This study conducted 3D computational fluid dynamics(CFD)simulations to evaluate the effect of a proposed city design on the wind environment of the Crescent Spring,a downwind natural heritage site located in Dunhuang,Northwestern China.Satellite terrain data from the Advanced Spaceborne Thermal Emission and Reflection Radiometer(ASTER)Digital Elevation Model(DEM)were used to construct the solid surface model.Steady-state Reynolds Averaged Navier-Stokes equations(RANS)with shear stress transport(SST)k-ωturbulence model were then applied to solve the flow field problems.Land-use changes were modeled implicitly by dividing the underlying surface into different areas and by applying corresponding aerodynamic roughness lengths.Simulations were performed by using cases with different city areas and building heights.Results show that the selected model could capture the surface roughness changes and could adjust wind profile over a large area.Wind profiles varied over the greenfield to the north and over the Gobi land to the east of the spring.Therefore,different wind speed reduction effects were observed from various city construction scenarios.The current city design would lead to about 2 m/s of wind speed reduction at the downwind city edge and about 1 m/s of wind speed reduction at the north of the spring at 35-m height.Reducing the city height in the north greenfield area could efficiently eliminate the negative effects of wind spee.By contrast,restricting the city area worked better in the eastern Gobi area compared with other parts of the study area.Wind speed reduction in areas near the spring could be limited to 0.1 m/s by combining these two abatement strategies.The CFD method could be applied to simulate the wind environment affected by other land-use changes over a large terrain. | BenLi LIU JianJun QU QingHe NIU JunZhan WANG KeCun ZHANG | 2014 | Journal of Arid Land2014，6，1： | 4 |
| 3 | ANALYSIS SOLUTION OF BULGING CONVEXITY OF THE HYDRAULIC ELASTIC BULGING ROLL显示文摘ANALYSISSOLUTIONOFBULGINGCONVEXITYOFTHEHYDRAULICELASTICBULGINGROLLANALYSISSOLUTIONOFBULGINGCONVEXITYOFTHEHYDRAULICELASTICBULG... | Li Benli Wang Bingru Liu Zhubai Liu Guohui (Northeast Heavy Machinery institute)Li Yunquan Li Zhongli(Xi’an Heavy Machine Plant) | 1994 | Chinese Journal of Mechanical Engineering1994，7，3： | 2 |
| 4 | Climate change inferred from aeolian sediments in a lake shore environment in the central Tibetan Plateau during recent centuries显示文摘Studies of the past climate variation on the Tibetan Plateau(TP) are currently limited in number and low in density and temporal resolution. We investigated the climate condition from about 400 years before present(B.P.) in the central TP at the shore of Co(means 'lake') Nag using aeolian sediments. A 2.7-m sand profile with 57 sediment samples and six optically stimulated luminescence(OSL) samples were studied through grain-size analysis, geochemical elements and parameters, and depositional rate estimation. A previous assumption was verified that sand deposition at the shore of Lake Co Nag originated from hills to the east. Two significant wet periods between 90–140 and about 380 years B.P. were indicated by the variation of element profiles and sediment depositional rates. Aeolian activity is sensitive to variations from different seasonal changing patterns of climate factors in the study area, and aeolian sediments respond differently to climate conditions during the cold little ice age(LIA) and the warm 20 th century. Present day dry seasons of winter and spring might be much warmer and drier compared to seasons of 400 years ago although summer precipitation has increased, resulting in significantly more aeolian activity and higher depositional rate(about 6 times compared to 380–240 years ago) of sandy sediments. Aeolian problems like blown-sand deposition and desertification may be worse in a projected warming future in the central TP as well as other cold and high altitude regions. Our results suggest an agreement with environmental evolution during the little ice age and the 20 th century in a broader scale on the TP. | BenLi Liu JianJun Qu ShiChang Kang Bing Liu | 2018 | Research in Cold and Arid Regions2018，10，2： | 1 |
| 5 | A new microfiltration membrane with three-dimensional reticular architecture for Nano-pollutants removal from wastewater显示文摘This research provides a new insight into designing next-generation filtration materials for Nano-pollutants removal from wastewater,and potentially for gas/solid or liquid/solid separation in corrosive environment.Considering the high corrosion and oxidation resistance,Ti-40Al-10Nb-10Cr porous alloy was prepared by powder metallurgy and used as a mechanical support with a pore size of around 10 pm.Subsequently,metallic Zn nanoparticles was coated on the Ti-40Al-10Nb-10Cr porous framework by means of chemical vapor deposition,obtaining a novel microfiltration membrane with three-dimensional reticular architecture.Furthermore,the influence of Zn coating on surface morphology,pore feature,and filtration capability of Ti-40AI-10Nb-10Cr porous alloy was investigated.It is of note that the as-prepared microfiltration membrane exhibits an excellent Nanopollutants filtration efficiency of greater than 99.989%from wastewater.Most importantly,such a three-dimensional reticular architecture provides excellent structural stability,allowing the reutilization of the microfiltration membrane for at least 200 filtration cycles of wastewater treatment. | Wanyuan Gui Jingru Liu Xiping Song Hui Zhang Junpin Lin Benli Luan | 2021 | Progress in Natural Science:Materials International2021，31，3： | 1 |
| 6 | Numerical simulation of wind flow over transverse and pyramid dunes显示文摘 | Benli Liu Jianjun Qu Weimin Zhang Guangqiang Qian | 2011 | Journal of Wind Engineering & Industrial Aerodynamics2011，，8： | 1 |
| 7 | Numerical simulation of wind flow over transverse and pyramid dunes显示文摘 | Benli Liu Jianjun Qu Weimin Zhang Guangqiang Qian | 2011 | Journal of Wind Engineering & Industrial Aerodynamics2011，，8： | 1 |
| 8 | Experimental study on combined process of EOW and MBR for treatment of UDMH wastewater显示文摘 | Xia Benli Wang Li Liu Yuan | 2012 | Advanced Materials Research2012，，30： | 1 |
| 9 | Large scale sand saltation over hard surface:a controlled experiment in still air显示文摘Saltation is the major particle movement type in wind erosion process.Saltating sand grains can rebound up to tens of times larger in length and height over hard surface(such as gravel surface)than over loose sand surface.Gravels usually have different faces,causing distinct response of the impacting grains,but the effects of the grain and gravel-surface contact angle on grain rebound are not yet well quantified.We performed full-range controlled experiments of grain saltation using different contact angles,grain sizes and impact speeds in still air,to show that contact angle increases the height of representative saltation path but decreases particle travel length.The results were compared with outputs from the COMprehensive numerical model of SALTation(COMSALT).Large saltation height of 4.8 m and length of 9.0 m were recorded.The maximum and representative saltation height over the gravel surface were found to be about 4.9 times and 12.8 times those over the loose sandy surface,respectively.The maximum saltation length may be reduced by 58%and the representative saltation height may be increased by 77%as contact angle increases from 20°to 40°.We further showed that the collision inertia contributes 60%of the saltation length,and wind contributes to the other 40%.These quantitative findings have important implications for modeling saltation trajectory over gravel surface. | LIU Benli WANG Zhaoyun NIU Baicheng QU Jianjun | 2021 | Journal of Arid Land2021，13，6： | 1 |
| 10 | The daily evaporation characteristics of deeply buried phreatic water in an extremely arid region显示文摘 | LI Hongshou WANG WanFu LIU Benli | 2014 | Journal of Hydrology2014，514，6： | 1 |
| 11 | shRNA-mediated knockdown of Bmi-1 inhibit lung adenocarcinoma cell migration and metastasis显示文摘 | Xiuxiang Meng Yifang Wang Xiangyu Zheng Chunqing Liu Benli Su Huiling Nie Baoxia Zhao Xinyu Zhao Hong Yang | 2012 | Lung Cancer2012，，： | 1 |
| 12 | Luminescence properties of Pr3+ and energy transfer characteristics of Pr3+→Gd3+ in CaSiO3显示文摘 | Chu Benli Liu Xingren Wang Xiaojun | 2002 | Spectroscopy Spectral Analysis2002，22，4： | 1 |
| 13 | Mechanisms of the formation of wind-blown sand hazards and the sand control measures in Gobi areas under extremely strong winds along the Lanzhou-Xinjiang high-speed railway显示文摘The Lanzhou-Xinjiang high-speed railway(HSR)traverses areas of the Gobi Desert where extremely strong winds are frequent.These strong winds cause sand/gravel hazards,an unaddressed issue that often seriously compromises the safe operation of the HSR.This paper studies the mechanisms leading to wind-blown sand hazards and the outcomes of sand control projects in these areas.The main findings are as follows:(1)Cold northern airflows over the Tian Shan mountain range are accelerated by the wind tunnels and downslope effect as they pass over complex terrain comprising passes,gullies,and proluvial fans.Consequently,the wind intensity often increases two-to threefold,creating frequent high-speed winds that lead to severe sand damage along the HSR.(2)In the Gobi areas with extremely strong winds,sand grains can be lifted as high as 9 m from the ground into the air,far higher than in other areas of the desert.The sand transport rate decreases exponentially with increasing height.Both wind speed and particle size determine saltation height.Coarser particles and stronger winds provide the particles with a higher kinetic energy as they collide with the ground.In the wind zones of Baili and Yandun,the analysed study areas,the saltation layer height of wind-blown sand/gravel exceeds 3 and 2 m,respectively.(3)Based on the above findings,recently emerging sand control materials,suitable for the areas of interest,were screened and developed.Furthermore,under the proposed principle of‘supplementing blocking with trapping’,a comprehensive sand control measure was established,featuring sandblocking belts comprised of multiple rows,and high,vertical sand-trapping installations with a large grids size.The installed system showed a high efficacy,reducing sand transport rate by 87.87%and significantly decreasing the deposition of sand along a trial section of the HSR. | Jianjun QU Tao WANG Qinghe NIU Benli LIU Lihai TAN Qingjie HAN Yang GAO Jianhua XIAO | 2023 | Science China Earth Sciences2023，66，2： | 0 |
| 14 | A misleading way to transform the natural desert into farmland显示文摘Yi et al.proposed a concept of“desert soilization”and an idea of“omni-directional integrative(ODI)constraint”in the paper of The Innovation.1 In their practice,a“constraining material”was used to bind the sands in the Ulan Buh Desert.It is claimed that theirmethod can transform the desert into farmland.We havemany doubts about this method and disagree with their viewpoints.We would like to discuss these questions and clarify our stand here.Yi et al.should make it clear that their test is only valid in areas with shallow groundwater levels. | Benli Liu Bo Wu Ziqiang Lei Jinnian Tang Yongchun Zheng | 2022 | The Innovation2022，3，3： | 0 |
| 15 | Estimation of wind erosion from construction of a railway in arid Northwest China显示文摘A state-of-the-art wind erosion simulation model,the Wind Erosion Prediction System and the United States Environmental Protection Agency's AP 42 emission factors formula,were combined together to evaluate wind-blown dust emissions from various construction units from a railway construction project in the dry Gobi land in Northwest China.The influence of the climatic factors:temperature,precipitation,wind speed and direction,soil condition,protective measures,and construction disturbance were taken into account.Driven by daily and sub-daily climate data and using specific detailed management fles,the process-based WEPS model was able to express the beginning,active,and ending phases of construction,as well as the degree of disturbance for the entire scope of a construction project.The Lanzhou-Xinjiang High-speed Railway was selected as a representative study because of the diversities of different cli-mates,soil,and working schedule conditions that could be analyzed.Wind erosion from different working units included the building of roadbeds,bridges,plants,temporary houses,earth spoil and barrow pit areas,and vehicle transportation were calculated.The total wind erosion emissions,7406 t,for the first construction area of section LXS-15 with a 14.877 km length was obtained for quantitative analysis.The method used is applicable for evaluating wind erosion from other complex surface dis-turbance projects. | Benli Liu Larry E.Wagner Duihu Ning Jianjun Qu | 2017 | International Soil and Water Conservation Research2017，5，2： | 0 |
| 16 | Progress on research and mitigation of wind-blown sand risk in Dunhuang Singing Sand Mountain and Crescent Spring Scenic area,China显示文摘The Singing Sand Mountain and Crescent Spring Scenic Spot in Dunhuang,Northwest China is a world-renowned desert attraction that is also an integral component of the Dunhuang UNESCO Global Geopark.This scenic area underwent a 30-year transformation,i.e.,from a severe sand risk with spring water threatened by sand burial due to dune deformation,to restoration of the original sand flow field and mitigation of the sand burial problem.The current paper summarizes the research on the intensive monitoring of the dynamic change of star dunes near the spring,observation of wind and sand flow movement,and then restoring the harmonic vibration of the sand particles(singing sand)that were previously silenced.The existing and prospective impacts of anthropogenic and natural forces on the deformation of the sand dunes are investigated by integrated methods,guiding the implementation of mitigating measures with significant ameliorative effects.Contrast to common sand control practices that aim to reduce wind speed and stop blown sands,our research highlights the importance of maintaining the natural wind flow field in stabilizing surrounding dunes.These mitigation measures consist of removing excessive vegetation and newly constructed buildings to recover the original wind flow field and sand transport activity.Such research and mitigation efforts ensure the scientific protection and restoration of the special desert landform,and contribute to the mutual enhancement of the conservation and exploitation of this desert scenic spot and similar sites. | BenLi Liu KeCun Zhang JianJun Qu HaiJiang Li QingHe Niu ZhiShan An YingJun Pang LiHai Tan GenSheng Yang | 2023 | Research in Cold and Arid Regions2023，15，3： | 0 |
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