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12篇 您的检索式:作者名="Wanlin DONG"
    题名 作者 年代 出处 被引量
1Shaking table experimental study of recycled concrete frame-shear wall structures显示文摘In this study, four 1/5 scaled shaking table tests were conducted to investigate the seismic performance of recycled concrete frame-shear wall structures with different recycled aggregates replacement rates and concealed bracing detail. The four tested structures included one normal concrete model, one recycled coarse aggregate concrete model, and two recycled coarse and fi ne aggregate concrete models with or without concealed bracings inside the shear walls. The dynamic characteristics, dynamic response and failure mode of each model were compared and analyzed. Finite element models were also developed and nonlinear time-history response analysis was conducted. The test and analysis results show that the seismic performance of the recycled coarse aggregate concrete frame-shear wall structure is slightly worse than the normal concrete structure. The seismic resistance capacity of the recycled concrete frame-shear wall structure can be greatly improved by setting up concealed bracings inside the walls. With appropriate design, the recycled coarse aggregate concrete frame-shear wall structure and recycled concrete structure with concealed bracings inside the walls can be applied in buildings.Zhang Jianwei Cao Wanlin Meng Shaobin Yu Cheng Dong Hongying 2014Earthquake Engineering and Engineering Vibration2014,13,2:8
2Experimental and analytical study on seismic behavior of steel-concrete multienergy dissipation composite shear walls显示文摘In this paper, a steel-concrete multi-energy dissipation composite shear wall, comprised of steel-reinforced concrete(SRC) columns, steel plate(SP) deep beams, a concrete wall and energy dissipation strips, is proposed. In order to study the multi-energy dissipation behavior and restorability after an earthquake, two stages of low cyclic loading tests were carried out on ten test specimens. In the first stage, test on five specimens with different number of SP deep beams was carried out, and the test lasted until the displacement drift reached 2%. In the second stage, thin SPs were welded to both sides of the five specimens tested in the first stage, and the same test was carried out on the repaired specimens(designated as new specimens). The load-bearing capacity, stiffness, ductility, hysteretic behavior and failure characteristics were analyzed for both stages and the results are discussed herein. Extrapolating from these results, strength calculation models and formulas are proposed herein and simulations using ABAQUS carried out; they show good agreement with the test results. The study demonstrates that SRC columns, SP deep beams, concrete wall and energy dissipation strips cooperate well and play an important role in energy dissipation. In addition, this study shows that the shear wall has good recoverability after an earthquake, and that the welding of thin SP's to repair a deformed wall is a practicable technique.Dong Hongying Cao Wanlin Wu Haipeng Qiao Qiyun Yu Chuanpeng 2015Earthquake Engineering and Engineering Vibration2015,14,1:4
3Research on seismic performance of shear walls with concrete filled steel tube columns and concealed steel trusses显示文摘In order to further improve the seismic performance of RC shear walls, a new composite shear wall with concrete filled steel tube (CFT) columns and concealed steel trusses is proposed. This new shear wall is a double composite shear wall; the first composite being the use of three different force systems, CFT, steel truss and shear wall, and the second the use of two different materials, steel and concrete. Three 1/5 scaled experimental specimens: a traditional RC shear wall, a shear wall with CFT columns, and a shear wall with CFT columns and concealed steel trusses, were tested under cyclic loading and the seismic performance indices of the shear walls were comparatively analyzed. Based on the data from these experiments, a thorough elastic-plastic finite element analysis and parametric analysis of the new shear walls were carried out using ABAQUS software. The finite element results of deformation, stress distribution, and the evolution of cracks in each phase were compared with the experimental results and showed good agreement. A mechanical model was also established for calculating the load-carrying capacity of the new composite shear walls. The results show that this new type of shear wall has improved seismic performance over the other two types of shear walls tested.Cao Wanlin Zhang Jianwei Dong Hongying Wang Min 2011Earthquake Engineering and Engineering Vibration2011,10,4:3
4Asymmetric Ridge–Furrow and Film Cover Improves Plant Morphological Traits and Light Utilization in Rain-Fed Maize显示文摘Light is one of the most important natural resources for plant growth. Light interception(LI) and use efficiency(LUE) are often affected by the structure of canopy caused by growing pattern and agronomy managements. Agronomy practices, such as the ridge–furrow system and plastic film cover, might affect the leaf morphology and then light transmission within the canopy, thus change light extinction coefficient(k), and LI and LUE. The objective of this study is to quantify LI and LUE in rain-fed maize(Zea Mays L.), a major cropping system in Northeast China,under different combinations of ridge–furrow and film covering ratios. The tested ridge–furrow system(DRF:'double ridges and furrows') was asymmetric and alternated with wide ridge(0.70 m in width and 0.15 m in height),narrow furrow(0.10 m), narrow ridge(0.40 m in width and 0.20 m in height), and narrow furrow(0.10 m). Field experiments were conducted in 2013 and 2014 in Jilin Province, Northeast China. Four treatments were tested: no ridges and plastic film cover(control, NRF), ridges without film cover(DRF_0), ridges with 58% film cover(DRF_(58)),and ridges with 100% film cover(DRF_(100)). DRF_0 significantly increased LI by 9% compared with NRF, while film cover showed a marginal improvement. Specific leaf area in DRF experiments with film cover was significantly lower than in NRF, and leaf angle was 16% higher than in NRF, resulting in a 4% reduction in k. LUE of maize was not increased by DRF_0, but was significantly enhanced by covering film in other DRF experiments, especially by22% in DRF_(100). The increase of LUE by film cover was due to a greater biomass production and a lower assimilation portioning to vegetative organs, which caused a higher harvest index. The results could help farmers to optimize maize managements, especially in the region with decreased solar radiation under climate change.Wanlin DONG Hang YU Lizhen ZHANG Ruonan WANG Qi WANG Qingwu XUE Zhihua PAN Zhigang SUN Xuebiao PAN 2018Journal of Meteorological Research2018,32,5:3
5Analysis and seismic tests of composite shear walls with CFST columns and steel plate deep beams显示文摘A composite shear wall concept based on concrete filled steel tube(CFST)columns and steel plate(SP)deep beams is proposed and examined in this study.The new wall is composed of three different energy dissipation elements:CFST columns;SP deep beams;and reinforced concrete(RC)strips.The RC strips are intended to allow the core structural elements-the CFST columns and SP deep beams-to work as a single structure to consume energy.Six specimens of different configurations were tested under cyclic loading.The resulting data are analyzed herein.In addition,numerical simulations of the stress and damage processes for each specimen were carried out,and simulations were completed for a range of location and span-height ratio variations for the SP beams.The simulations show good agreement with the test results.The core structure exhibits a ductile yielding mechanism characteristic of strong column-weak beam structures,hysteretic curves are plump and the composite shear wall exhibits several seismic defense lines.The deformation of the shear wall specimens with encased CFST column and SP deep beam design appears to be closer to that of entire shear walls.Establishing optimal design parameters for the configuration of SP deep beams is pivotal to the best seismic behavior of the wall.The new composite shear wall is therefore suitable for use in the seismic design of building structures.Dong Hongying Cao Wanlin Wu Haipeng Zhang Jianwei Xu Fangfang 2013Earthquake Engineering and Engineering Vibration2013,12,4:1
6Effect of Al 2 O 3 and CaO/SiO 2 on the Viscosity of Calcium-Silicate–Based Slags Containing 10 Mass Pct MgO显示文摘Hyuk Kim Hiroyuki Matsuura Fumitaka Tsukihashi Wanlin Wang Dong Joon Min Il Sohn 2013Metallurgical and Materials Transactions B2013,,1:1
7Identification of damaged corn seeds using air-coupled ultrasound显示文摘Corn,an important staple in many countries around the world,is subject to a very inefficient germination rate due to worm-damaged seeds.However,air-coupled ultrasound is a rapid,safe and widely accepted method for the early detection of such damage.In this study,the current effectiveness and future prospects of this technique for identifying damaged seeds were explored.The presented procedure started with drawing a sample of 810 seed particles,consisting of 400 that were intact,400 manually damaged and 10 damaged by worms.Then the principal component analysis(PCA)method was used to reduce the dimensions of air-coupling ultrasonic information and extract the top ten principal components.Finally,a KNN decision tree by using SIMCA software and a Fisher recognition model by using MATLAB software were constructed.The pattern recognition was established by using KNN,which has the most accurate recognition rate.The correct recognition rate of modeling for the front and back data of the intact particles was 98%and 100%,respectively;and for the manually damaged particles,99%and 97%,respectively.The results show that the model developed by using air-coupled ultrasonic data can classify corn seed particles both with and without holes to provide a basis for the development of a seed selection system,which has a significant role in improving the clarity and the germination rate.Jin Yanyun Gao Wanlin Zhang Han An Dong Guo Sihan Saeed Iftikhar Ahmed Liu Yunling 2016International Journal of Agricultural and Biological Engineering2016,9,1:0
8A multiple coupling approach to produce high-performance SERS substrates显示文摘Creating hotspots with significantly enhanced electromagnetic(EF) field, efficiently placing target molecules in hotspot region, and achieving uniform and reproducible Raman signals are three critical issues for developing high-performance SERS substrates. In this work, large area gold nanoparticle cluster pillar array with a gold mirror at bottom was facilely fabricated by combined use of nanosphere lithography and self-assembly approach. It is both theoretically and experimentally found that through multiple coupling interactions, the electromagnetic fields at interparticle gaps within the gold clusters were significantly enhanced in our three-dimentional(3D) pillar array substrates, which can result in one order of magnitude stronger as compared with random gold clusters on a two-dimentional planar case.Due to the periodic stucture, our substrates also possess the capbility of producing highly uniform and reproducible SERS signals. Attractively, in our case, a photoresponsive polymer was used for the formation of pillar array structure. Its unique photoinduced deformation makes it possible to reversibly open and close the gaps of the closely packed Au NP array, thus enabling efficient placement or entrapment of probe molecules into hotspot sites between adjacent nanoparticles.Xianpeng Yin Hao Dong Shiqiang Wang Yun Liang Ning Gao Wanlin Zhang Li Tian Fuwei Sun Guangtao Li 2019Chinese Chemical Letters2019,30,1:0
9Managing reproductive problems in women with epilepsy of childbearing age显示文摘Girls and women constitute nearly 50%of all epilepsy cases.Apart from the disease symptoms,epilepsy and antiseizure medications(ASMs)may also affect the reproductive function,pregnancy and even the health of their offspring.Therefore,it is very important to identify and summarize the problems and risks for women with epilepsy(WWE)of childbearing age,and offer internationally recognized methods through multidisciplinary collaboration.In this review,we summarize the reproduction-related problems with WWE and propose multidisciplinary management by epileptologists,gynecologists and obstetricians,as well as other experts,from preconception to delivery.Large,multicenter registries are needed to advance our knowledge on new ASMs and their effects on WWE and their offspring.Wanlin Lai Shixu He Dong Zhou Lei Chen 2021Acta Epileptologica2021,3,1:0
10Five-channel frequency-division multiplexing using low-loss epsilon-near-zero metamaterial waveguide显示文摘The rapidly growing global data usage has demanded more efficient ways to utilize the scarce electromagnetic spectrum resource. Recent research has focused on the development of efficient multiplexing techniques in the millimeter-wave band(1-10 mm, or 30-300 GHz) due to the promise of large available bandwidth for future wireless networks. Frequency-division multiplexing is still one of the most commonly-used techniques to maximize the transmission capacity of a wireless network.Based on the frequency-selective tunnelling effect of the low-loss epsilon-near-zero metamaterial waveguide, we numerically and experimentally demonstrate five-channel frequency-division multiplexing and demultiplexing in the millimeter-wave range.We show that this device architecture offers great flexibility to manipulate the filter Q-factors and the transmission spectra of different channels, by changing of the epsilon-near-zero metamaterial waveguide topology and by adding a standard waveguide between two epsilon-near-zero channels. This strategy of frequency-division multiplexing may pave a way for efficiently allocating the spectrum for future communication networks.Binbin Hong Lei Sun Wanlin Wang Yanbing Qiu Naixing Feng Dong Su Nutapong Somjit Ian Robertson Guo Ping Wang 2022Science China(Physics,Mechanics & Astronomy)2022,65,7:0
11A unique hyperdynamic dimer interface permits small molecule perturbation of the melanoma oncoprotein MITF for melanoma therapy显示文摘Microphthalmia transcription factor(MITF)regulates melanocyte development and is the“lineage-specific survival”oncogene of melanoma.MITF is essential for melanoma initiation,progression,and relapse and has been considered an important therapeutic target;however,direct inhibition of MITF through small molecules is considered impossible,due to the absence of a ligand-binding pocket for drug design.Here,our structural analyses show that the structure of MITF is hyperdynamic because of its out-of-register leucine zipper with a 3-residue insertion.The dynamic MITF is highly vulnerable to dimer-disrupting mutations,as we observed that MITF loss-of-function mutations in human Waardenburg syndrome type 2 A are frequently located on the dimer interface and disrupt the dimer forming ability accordingly.These observations suggest a unique opportunity to inhibit MITF with small molecules capable of disrupting the MITF dimer.From a high throughput screening against 654,650 compounds,we discovered compound TT-012,which specifically binds to dynamic MITF and destroys the latter’s dimer formation and DNA-binding ability.Using chromatin immunoprecipitation assay and RNA sequencing,we showed that TT-012 inhibits the transcriptional activity of MITF in B16F10 melanoma cells.In addition,TT-012 inhibits the growth of high-MITF melanoma cells,and inhibits the tumor growth and metastasis with tolerable toxicity to liver and immune cells in animal models.Together,this study demonstrates a unique hyperdynamic dimer interface in melanoma oncoprotein MITF,and reveals a novel approach to therapeutically suppress MITF activity.Zaizhou Liu Kaige Chen Jun Dai Peng Xu Wei Sun Wanlin Liu Zhixin Zhao Steven P.Bennett Peifeng Li Tiancheng Ma Yuqi Lin Akinori Kawakami Jing Yu Fei Wang Chunxi Wang Miao Li Peter Chase Peter Hodder Timothy P.Spicer Louis Scampavia Chunyang Cao Lifeng Pan Jiajia Dong Yong Chen Biao Yu Min Guo Pengfei Fang David E.Fisher Jing Wang 2023Cell Research2023,33,1:0
12Flexoelectricity enhanced water splitting and hydrogen evolution reaction on grain boundaries of monolayer transition metal dichalcogenides显示文摘Our extensive first-principles calculations reveal that the chemical activities of monolayer transition metal dichalcogenides(TMDs)MX_(2)(M=Mo or W,and X=Te,Se,or S)for water splitting and hydrogen evolution are modified and promoted on their grain boundaries(GBs)when in-plane tensile loadings are applied.Compared with monolayer TMDs without GBs,the flexoelectricity induced by nonuniform deformation and strain gradient significantly enhances the charge polarizations of X and M atoms at the GB sites of monolayer TMDs,which facilitates the dissociation of water molecules on the GB sites and reduces the reaction barrier of hydrogen evolution reaction.The energy barriers of splitting water molecules and hydrogen adsorption free energies on the GB sites decrease with increasing the flexoelectric effect.These results highlight an attractive way of utilizing the flexoelectric effect of GB-containing TMDs to improve their surface catalytic capability for hydrogen generation.Mingjie Pu Dong Wang Zhuhua Zhang Yufeng Guo Wanlin Guo 2022Nano Research2022,15,2:0
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