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24篇 您的检索式:作者名="Weiting Li"
    题名 作者 年代 出处 被引量
1Fracture development in shale and its relationship to gas accumulation显示文摘有高石英,长石和碳酸盐的页岩,将有低泊松比率,高幼仔模量和高易碎物。作为结果,页岩是导致的在外部力量下面生产自然、导致的破裂。一般来说,在在页岩和在场的易碎的矿物质的体积的破裂开发之间有好关联。有高 TOC 或反常地高的压力的页岩开发得好破裂。页岩破裂开发也与全部的煤气的累积和免费煤气的体积显示出积极关联,即,页岩破裂越更好被开发,越 greater 煤气的累积并且因此越多更高煤气的生产。破裂为天然气和形成水提供迁居水管和累积空格,它为免费天然气的容量的增加是有利的。在页岩的更宽的破裂导致煤气的损失。在北美洲,从在页岩的高角度的破裂地区有页岩气体探索和高煤气的生产的高成功比率。在在四川盆的更低的古生代的海洋的器官的充满事的岩石中的好天然气表演或低收益制片人是仔细与在易碎的页岩的破裂开发的度有关。Wenlong Ding Chao Li Chunyan Li Changchun Xu Kai Jiu Weite Zeng Liming Wu 2012Geoscience Frontiers2012,3,1:32
2Spatial-temporal patterns of vegetation dynamics and their relationships to climate variations in Qinghai Lake Basin using MODIS time-series data显示文摘全球温暖在最近的年里导致了重要植被变化。为环境适应的更好的理解在植被变化上调查气候的变化(温度和降水) 的效果到气候的变化是必要的。在这份报纸,我们在 GIS 集中了于多方法和空间分析技术的集成和申请学习植被动力学的时间空间的变化并且探索植被变化机制。在在不同时间规模的 EVI 和气候因素之间的关联在从 2001 ~ 2012 的一年的金海·莱克盆分别地为包括每月、季节、年度的规模的每个象素是计算的。这研究的主要目的是揭示什么时候,植被变化在哪儿并且为什么练习以便为明智的地区性的生态系统管理支持对全球变化以及有用信息和技术的陆上的反应的更好的理解。主要结论如下:(1 ) 在这个区域的全面植被 EVI 增加了 6% 在期间最近 12 年。在种季节的 EVI 价值(即春天和夏天) 展出了很重要的改善趋势,分别地占了 12.8% 和 9.3% 。EVI 的空间模式看明显的空间异质哪个与热水的状况一致。一般来说,自从将近 78% 象素整个盆显示出增加的趋势,植被范围在区域的大多数部分改善了,当仅仅在区域的小部分稍微降级了时。(2 ) EVI 变化断然与平均温度和降水被相关。一般来说在金海·莱克盆,降水是为植被生长的主导的开车因素;然而,在不同时间规模,它到植被的重量有差别。(3 ) 基于 geo 统计的分析,秋天降水在整个区域与下一春天 EVI 价值有强壮的关联。这调查结果探索秋天降水是重要指示物,然后,限制下个弹簧的植物生长。GUO Weit NI Xiangnan JING Duanyang LI Shuheng 2014Journal of Geographical Sciences2014,24,6:6
3Simultaneously optimizing pore morphology and enhancing mechanical properties of Al-Si alloy composite foams by graphene nanosheets显示文摘The integrity and regularity of pore morphology play an important role in determining the mechanical properties of the metallic foam materials.The conventional methods on refining pore morphology are mainly focused on the optimization of fabrication techniques,however,they are usually inconvenient and complicated.Recently,incorporating nano reinforcement is considered to be a suitable way to fabricate metallic composite foams accompanied by optimized pore morphology and enhanced mechanical properties.In this work,through a facile and rapid powder metallurgy foaming method,the aluminum-silicon(Al-Si)alloy composite foams reinforced by graphene nanosheets(GNSs)are successfully fabricated.The microstructure analyses reveal that,for the Al-Si alloy foams incorporating the GNSs(GNSs/Al-Si composite foams),the pore size is transformed to be smaller,the pore size distributions become more homogeneous and the pore shape is also refined to a regular and roundish state.Meanwhile,the shape of Si precipitates is found transforming from an irregular long strip(length of~20μm,width of~5μm)to a fine particle state(diameter of~5μm).Moreover,the compressive testing results show that,the 0.4wt%GNSs/Al-Si composite foams own the optimal compression stress of 11.7±0.5 MPa,plateau stress of 10.0±1.0 MPa and energy absorption capacity of 6.8±0.7 MJ/m^(3),which have improvement of 58.1%,53.8%and 51.1%in comparison with the Al-Si alloy foams counterpart,respectively.The present findings may pave a new way for developing new generation of metallic composite foams that with stable microstructure and excellent mechanical performance.Weiting Li Xudong Yang Kunming Yang Chunnian He Junwei Sha Chunsheng Shi Yunhui Mei Jiajun Li Naiqin Zhao 2022Journal of Materials Science & Technology2022,,6:3
4Solution-processed lead-free bulk 0D Cs3Cu2I5 single crystal for indirect gamma-ray spectroscopy application显示文摘Bulk scintillators that are with high density,low cost,and fine pulse-height energy spectral resolution,and are nonhygroscopic and user friendly,are desired for high-energy gamma-ray spectroscopy application.Recently,low-cost solution-processed perovskite nanoscintillators have been demonstrated with outstanding performances for indirect low-energy X-ray detection;however,the stability and thickness are not suitable for high-energy gamma-ray detection.Here,we report scintillation performances of a low-cost solution-processed bulk 0D Cs3Cu2I5 single crystal.The self-trapped exciton emission results in a large Stokes shift (109 nm) that is reabsorption free.A broad X-ray excited emission matches well with the sensitivity of a silicon photodiode.The unique Cs+ surrounded isolated [Cu2I5]3-cluster scintillator provides ultra-stability in air and strong radiation hardness under high-dose gammaray exposure from a 60Co source.This solution-processed Cs3Cu2I5 scintillator is expected with low-cost and has detection performances comparable to commercial alkali-halide scintillator products.Qiang Xu Juan Wang Qindong Zhang Xiao Ouyang Maheng Ye Weiting Xie Xuewen Yan Deyuan Li Xiaoping Ouyang Xiaobing Tang Xiaodong Zhang 2021Photonics Research2021,9,3:3
5Dynamic Analysis of Supply and Demand Coupling of Ecosystem Services in Loess Hilly Region:A Case Study of Lanzhou,China显示文摘The relationship between the supply and demand for ecosystem services(ESs)is a key issue for the rational allocation of natural resources and optimisation of sustainable development capacity.This paper investigateed the dynamic evolution features of supply and demand of four ESs in Lanzhou of China,namely,water supply,food supply,carbon fixation and soil retention services.The crosssectional data of 2005 and 2017 were used for calculating ESs value and its supply and demand through ArcGIS software,InVEST model,elastic coefficient model and coupling coordination model.Results showed that:1)from 2005 to 2017,the supply of water supply services increased,the demand of soil retention services decreased,and the supply and demand of food supply and carbon fixation services increased.The high-value areas of service supply were mainly distributed in the rocky mountain areas in the southeast and northwest with high vegetation coverage,while the high-value areas of demand were mainly distributed in the urban areas and surrounding areas with high population density.2)There were five different types of coupling relations.Water supply service was dominated by a negative coupling type D,which means that the decrease in demand for ESs has had a positive response on the supply of ESs.Negative coupling type C was the main type of food supply and carbon fixation services,which means that the increase in demand for ESs has had a negative response on the supply of ESs.All three services were supplemented by a positive coupling type A,which means that the increase in demand for ESs has had a positive response on the supply of ESs.Soil retention service generally exhibits a positive coupling type B,which means that the decrease in demand for ESs has had a negative response on the supply of ESs.3)Over the past 12 yr,the coordination degree of supply and demand of water supply,food supply and soil retention services decreased,and the coordination degree of carbon fixation service increased.Various types of ES had a low degree of coupling and coordination,showing different characteristics of temporal and spatial evolution.The areas with imbalanced ESs supply and demand were mainly distributed in urban areas dominated by construction land.The research results are valuable to the optimisation of urban and rural ecological environments and the sustainable development of territory space under the framework of ecological civilisation,including similar ecologically vulnerable areas in other developing countries.LI Pengjie LIU Chunfang LIU Licheng WANG Weiting 2021Chinese Geographical Science2021,31,2:3
6An overview of polymeric nanomicelles in clinical trials and on the market显示文摘Polymeric nanomedicine is a promising and rapidly evolving field.Among the different polymeric carriers,polymeric micelle(PM) with nanoscale size exhibit potent physical and biological advantages including excellent solubility and pharmacokinetics,enhanced efficacy and lower toxicity.PM has garnered increasing intere st in research and in the clinic.This review will highlight the clinical outcomes of several PM-based formulations,and further summarized their preparation methods,strengths and challenges.Xue Zheng Jizhen Xie Xing Zhang Weiting Sun Heyang Zhao Yantuan Li Cheng Wang 2021Chinese Chemical Letters2021,32,1:2
7Metal-Organic Framework-based Wood Aerogel for Effective Removal of Micro/Nano Plastics显示文摘The large amount of microplastic pollution in the aquatic environment has been regarded as a major challenge facing the world. Although some traditional water treatment processes can effectively remove microplastics in the millimeter range, research is still needed to solve the problem of removing smaller microplastics. Here, we made a durable zinc metal-organic framework-based composite material ZIF-8@Aerogel by in situ growing ZIF-8 on wood aerogel fibers, which can successfully remove microplastics in simulated water and seawater. The removal efficiencies on micro/nano plastics including poly(1,1-difluoroethylene)(60-110 nm) and polystyrene(90-140 nm) reached 91.4% and 85.8%, respectively. This work is expected to provide a new and efficient way to remove small-sized microplastic particles in the environment.YOU Dongyu ZHAO Yujuan YANG Weiting PAN Qinhe LI Jiyang 2022Chemical Research in Chinese Universities2022,38,1:2
8Plasmon-mediated photodecomposition of NH3 via intramolecular charge transfer显示文摘As an excellent clean medium for hydrogen storage and fuel cell applications,the photolysis of ammonia via localized surface plasmon could be invoked as a promising route towards significantly reducing the temperature for conventional thermolysis.Here,we explore the underlying microscopic mechanism of ultrafast carrier dynamics in plasmon-mediated NH3 photodecomposition at the single-molecular level using real-time time-dependent density functional theory.The NH_(3)molecule adsorbed on the tip of archetypal magic metal clusters represented by tetrahedral Ag_(2)0 and icosahedral Ag147,splits within a hundred femtoseconds upon laser pulse illumination.We found that the splitting of the first N-H bond is dominated by the intramolecular charge transfer driven by localized surface plasmon.Surprisingly,the phase of laser pulse could modulate the dynamics of charge transfer and thus affect the plasmon-induced bond breaking.These findings offer a new avenue for NH3 decomposition and provide in-depth insights in designing highly efficient plasmon-mediated photocatalysts.Yimin Zhang Weite Meng Daqiang Chen Lili Zhang Shunfang Li Sheng Meng 2022Nano Research2022,15,5:2
9Coil parameter analysis of meander-line coil electromagnetic acoustic trans- ducer-based Rayleigh waves 显示文摘Li Zhichao Zhai Weiting Su Riliang 2014Transactions of the Institu- te of Measurement and Control2014,,3:1
10Vapor phase growth of two-dimensional PdSe2 nanosheets for high-photoresponsivity near-infrared photodetectors显示文摘Palladium diselenide(PdSe2),a stable layered material with pentagonal structure,has attracted extensive interest due to its excellent electrical and optoelectronic performance.Here,we report a reliable process to synthesize PdSe2 via chemical vapor deposition(CVD)method.Through systematic regulation of temperature in the growth process,we can tune the thickness,size,nucleation density and morphology of PdSe2 nanosheets.Field-effect transistors based on PdSe2 nanosheets exhibit n-type behavior and present a high electron mobility of 105 cm^2·V^−1·s^−1.The electrical property of the devices after 6 months keeping in the air show little change,implying outstanding air-stability of PdSe2.In addition,PdSe2 near-infrared photodetector shows a photoresponsivity of 660 A·W^−1 under 914 nm laser.These performances are better than those of most CVD-grown 2D materials,making ultrathin PdSe2 a highly qualified candidate material for next-generation optoelectronic applications.Weiting Xu Jiayang Jiang Huifang Ma Zhengwei Zhang Jia Li Bei Zhao Ruixia Wu Xiangdong Yang Hongmei Zhang Bailing Li Weining Shu Zucheng Zhang Bo Li Yuan Liu Lei Liao Xidong Duan 2020Nano Research2020,13,8:1
11Genipin-crosslinked gelatin scaffolds for articular cartilage tissue engineering with a novel crosslinking method 显示文摘LIEN Siomei LI Weite HUANG Tajen 2008Materials Science and Engineering C2008,28,:1
12Preparation of silver nanoparticles of en- hanced antibacterial effect with Benzalko- nium Bromide 显示文摘Yang Weite Li Hui Chen Wuyong ct al 2011Journal of Optoelec- tronics and Advanced Materials2011,13,6:1
13Toughening Effects through Optimizing Cell Structure and Deformation Behaviors of Al–Mg Foams显示文摘As widely used protective materials,the application of Al foams is still limited by their low intrinsic mechanical properties caused by the brittleness of struts.The introduction of Mg is recently demonstrated effective to improve the mechanical performance of Al foams;however,the mechanism of Mg modification is still not clear.In this work,Al-Mg foams are developed through a powder metallurgy process with excellent compression performance and high energy absorption capacity.The effects of Mg modification on the cell structure,toughness,and deformation behavior are investigated systematically.As a result,the small cell size of~1.8 mm and the high sphericity of 0.92 are achieved with 5% of Mg addition,delivering high compression stress of 8.5±0.43 MPa and energy absorption capacity of 6.9±0.36 MJ/m^(3),simultaneously.The synergistic mechanism for the improved mechanical performance is also demonstrated to be the combination of stress transfer and plastic deformation behavior of cells.The results provide a new strategy to develop high-performance foam materials by improving toughness and further promote the practical application.Hao Yu Xudong Yang Weiting Li Xudong Rong Siyuan Guo Lishi Ma Lizhuang Yang Junwei Sha Naiqin Zhao 2022Acta Metallurgica Sinica(English Letters)2022,35,12:1
14Kinetic Adsorption of Cd onto Nanometer Al_2O_3/Carbon Fibre显示文摘A new nanometer material, nano-Al2O3 with carbon fibre as the carrier, was employed for the removal of Cd with low concentrations from polluted water. The characterization of the material was carried out by means of SEM and TEM. Batch adsorption and elution experiments were carried out to determine the adsorption properties of Cd on the new adsorbent. The classical Thomas model was applied to estimating the equilibrium coefficients of Cd adsorption and the saturated adsorption ability. The results show that the Thomas model is fit for describing the kinetic adsorption process, and the maximum adsorption capacity of the nanometer Al2O3/carbon is 69.29 mg/g. The resulting information also indicates that the desorption of Cd eluted with de-ionized water at a rate of 9.8 mL/min can be neglected. With the advantage of a high adsorption capacity for removing low concentration Cd, the Al2O3/carbon fibre possesses the potentiality to be an effective adsorbent for the removal of Cd from polluted water.LI Yu WANG Yue HAN Weit LI Su-wen ZHAO Hui ZHU Chang-yun WANG Heng 2005Chemical Research in Chinese Universities2005,21,5:1
15Pan-cancer analyses demonstrate that ANKRD6 is associated with a poor prognosis and correlates with M2 macrophage infiltration in colon cancer显示文摘Objective:Ankyrin repeat domain-containing protein 6(ANKRD6)is an ankyrin repeat-containing protein which is structurally related to vertebrate inversin and Drosophila Diego.However,the correlations between ANKRD6 and tumor-infiltrating immune cells in cancers is not clear.Methods:ANKRD6 expression was analyzed by Oncomine,Tumor Immune Estimation Resource(TIMER)and Gene Expression Profiling Interactive Analysis(GEPIA).PrognoScan and GEPIA were used to evaluate the influence of ANKRD6 on clinical prognosis.TIMER and CIBERSORT were used to analyze correlations between ANKRD6 expression levels and tumor immune cell infiltrates.Immunohistochemical analysis of the relationship between ANKRD6 expression and overall survival,as well as the relationship between ANKRD6 expression and M2 macrophage infiltration,was performed.Results:High level of ANKRD6 expression was associated with poor prognosis of colon cancer.ANKRD6 expression level was positively correlated with infiltrating levels of CD8+T cells,CD4+T cells,macrophages,neutrophils and dendritic cells in colon cancer by using TIMER.Using CIBERSORT,we found that in plasma cells,CD8+T cells,CD4+memory resting T cells,follicular helper T cells and activated natural killer cells were significantly lower in the ANKRD6-high group than in the ANKRD6-low group.M0 and M2 macrophages were significantly higher in the ANKRD6-high group than in the ANKRD6-low group.Immunohistochemistry confirmed that M2 macrophage infiltration in the ANKRD6-high group significantly increased.Conclusions:The high ANKRD6 expression is associated with poor prognosis of colon cancer.ANKRD6 expression is positively correlated with M2 macrophage infiltration in colon cancer.Rui Bai Dehao Wu Zhong Shi Wangxiong Hu Juan Li Yuanyuan Chen Weiting Ge Ying Yuan Shu Zheng 2021Chinese Journal of Cancer Research2021,33,1:1
16Layered and three-dimensional uranyl–organic assemblies with 4,4′-oxidiphthalic acid显示文摘Hydrothermal reactions of uranyl nitrate and 4,4'-oxidiphthalic acid(H_4L) resulted in the formation of three new uranyl-organic framework materials,namely(NH_4)_2[(UO_2)_3(L)_2]·5H_2O(1),(NEt_4)[(UO_2)_3(H_2O)(L)(HL)](2) and(UO_2)_7(H_2O)_2(phen)_4(L)_2(HL)_2(3)(NEt_4 = tetraethylammonium,phen = 1,10-phenanthroline).These three structures all comprise common uranyl pentagonal bipyramids.In 1,UO_7polyhedra are linked by hexadentate ligands to form a 3D framework with 1D channels,in which are located NH_4^+ ions and water molecules.While in 2,the organic ligands adopt pentadentate and hexadentate coordination modes,ligating UO_7 units to create a layered structure with channels filled by NEt_4^+ ions.For 3,uranyl square bipyramids are also accommodated together with pentagonal bipyramids,which are linked by tetradentate carboxylate ligands to produce the layered assembly.Phen molecules also coordinate to the uranyl centers to build up the structure.Luminescent studies indicate that 2 and 3 exhibit the characteristic uranyl emission.Dai Wu Ying Gao Wan-Guo Tian Yun-Hui Li Weiting Yang Zhong-Ming Sun 2016Chinese Chemical Letters2016,27,3:1
17Personal glucose meters coupled with signal amplification technologies for quantitative detection of non-glucose targets:Recent progress and challenges in food safety hazards analysis显示文摘Ensuring food safety is paramount worldwide.Developing effective detection methods to ensure food safety can be challenging owing to trace hazards,long detection time,and resource-poor sites,in addition to the matrix effects of food.Personal glucose meter(PGM),a classic point-of-care testing device,possesses unique application advantages,demonstrating promise in food safety.Currently,many studies have used PGM-based biosensors and signal amplification technologies to achieve sensitive and specific detection of food hazards.Signal amplification technologies have the potential to greatly improve the analytical performance and integration of PGMs with biosensors,which is crucial for solving the challenges associated with the use of PGMs for food safety analysis.This review introduces the basic detection principle of a PGM-based sensing strategy,which consists of three key factors:target recognition,signal transduction,and signal output.Representative studies of existing PGM-based sensing strategies combined with various signal amplification technologies(nanomaterial-loaded multienzyme labeling,nucleic acid reaction,DNAzyme catalysis,responsive nanomaterial encapsulation,and others)in the field of food safety detection are reviewed.Future perspectives and potential opportunities and challenges associated with PGMs in the field of food safety are discussed.Despite the need for complex sample preparation and the lack of standardization in the field,using PGMs in combination with signal amplification technology shows promise as a rapid and cost-effective method for food safety hazard analysis.Feng He Haijie Wang Pengfei Du Tengfei Li Weiting Wang Tianyu Tan Yaobo Liu Yanli Ma Yuanshang Wang A.M.Abd El-Aty 2023Journal of Pharmaceutical Analysis2023,13,3:0
18The Fusion of Chinese and American Wedding Culture显示文摘In the new century,China’s status in the international community has continued to improve.Chinese wedding ceremonies and the pleasant atmosphere of Chinese wedding.The fusion of Chinese and Western wedding customs reflects the fusion of Chinese and Western cultures.We can better understand Western cultures,so as to better carry out cross-cultural communication.Zhu Weiting Li Qiong 2019校园英语2019,,51:0
19Comparative transcriptome analysis of the climacteric of apple fruit uncovers the involvement of transcription factors affecting ethylene biosynthesis显示文摘Apple(Malus domestica)fruit generally undergoes a climacteric.During its ripening process,there is a peak in ethylene release and its firmness simultaneously decreases.Although more in-depth research into the mechanism of climacteric-type fruit ripening is being carried out,some aspects remain unclear.In this study,we compared the transcriptomes of 0-Pre and 15-Post(pre-and post-climacteric fruit),and 15-Post and 15-MCP[fruit treated with 1-MCP(1-methylcyclopropene)].Various transcription factors,such as MADS-box,ERF,NAC,Dof and SHF were identified among the DEGs(differential gene expressions).Furthermore,these transcription factors were selected for further validation analysis by qRT-PCR.Moreover,yeast one hybrid(Y1H),β-glucuronidase(GUS)transactivation assay and dual-luciferase reporter assay showed that MdAGL30,MdAGL104,MdERF008,MdNAC71,MdDof1.2,MdHSFB2a and MdHSFB3 bound to MdACS1 promoter and directly regulated its transcription,thereby regulating ethylene biosynthesis in apple fruit.Our results provide useful information and new insights for research on apple fruit ripening.Tong Li Xiao Zhang Yun Wei Yaxiu Xu Weiting Liu Hongjian Li Guangxin Yang Aide Wang Xiaoxue Wang 2023Horticultural Plant Journal2023,9,4:0
20Hydraulic role in differential stomatal behaviors at two contrasting elevations in three dominant tree species of a mixed coniferous and broad-leaved forest in low subtropical China显示文摘Quantifying the variation in stomatal behavior and functional traits of trees with elevation can provide a better understanding of the adaptative strategies to a changing climate. In this study, six water-and carbon-related functional traits were examined for three dominant tree species, Schima superba, Pinus massoniana and Castanopsis chinensis, in a mixed coniferous and broad-leaved forest at two elevations(70 and 360 m above sea level,respectively) in low subtropical China. We hypothesized that trees at higher elevations would develop more efficient strategies of stomatal regulations and greater water transport capacity to cope with more variable hydrothermal conditions than those at lower elevations. Results show that the hydraulic conductivity did not differ between trees at the two elevations, contrary to our expectation. The C. chinensis trees had greater values of leaf mass per unit area(LMA), and the S. superba and C. chinensis trees had greater values of wood density(WD),relative stem water content(RWC), and ratio of sapwood area to leaf area(Hv) at the 360-m elevation than at 70-m elevation. The mean canopy stomatal conductance was greater and more sensitive to vapor deficit pressure at360 m than at 70 m for both S. superba and C. chinensis, while stomatal sensitivity did not differ between the two contrasting elevations for P. massoniana. The midday leaf water potential(ψL) in P. massoniana was significantly more negative at 360 m than at 70 m, but did not vary with increasing elevation in both S. superba and C. chinensis.Variations in Hvcan be related to the differential stomatal behaviors between the two elevations. The variations of stomatal behavior and ψLwith elevation suggested the isohydric strategy for the two broad-leaved species and the anisohydric strategy for the conifer species. The species-specific differences in LMA, WD, RWC, and Hvbetween the two elevations may reflect conservative resource use strategies at the higher elevation. Our findings revealed a close relationship between hydraulic and stomatal behavior and may help better understand the functional responses of forests to changing environmental conditions.Liwei Zhu Tianyu Fu Jie Du Weiting Hu Yanqiong Li Xiuhua Zhao Ping Zhao 2023Forest Ecosystems2023,10,1:0
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