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201篇 您的检索式:作者名="Weiting"
    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 Pattern and Differences of Land Use Changes in the Three Gorges Reservoir Area of China during 1975-2005显示文摘Regional land use changes are an important part of global changes.The research on land use changes in the Three Gorges Reservoir Area of China attracts a lot of attention owing to the Three Gorges Dam building.The Three Gorges Reservoir Area becomes one of the important research areas.This study analyzed the transforming processes and traits of each land use type and the regional differences of land use changes during the past 30 years,summarized the distribution of different land use types in different buffer zones and regresses the equation areas and different buffer distances based on buffer analyses and regression analyses,and then analyzed the transforming rules in different buffer distances,got the optimal influence distances.The research results indicate that,(1) cultivated land lies at the northwest of the reservoir and was decreasing,however,the construction land was increasing,especially the urban construction land,a large number of land was flooded because of the reservoir water level rise;(2) urban area was sprawling quickly in developed and neighboring areas,and a great deal of cultivated land and a considerable amount of grassland were occupied;in the earlier time,rural settlements occupied lots of cultivated land and a sum of forestry land in the later time;(3) the optimum influenced distances for cultivated land and forestry land were 10-35 km,and for urban and rural settlements were in 5-20 km.Overall,this research can reflect the spatial-temporal characteristics of land use changes during the 30 years,and it is helpful for urban planning and land use planning in the reservoir area.CAO Yingui ZHOU Weit WANG Jing YUAN Chun 2011Journal of Mountain Science2011,8,4:9
3Spatial-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
4Construction,Characterization,and Chromosomal Mapping of a Fosmid Library of the White-Cheeked Gibbon (Nomascus leucogenys)显示文摘Gibbons have experienced extensive karyotype rearrangements during evolution and represent an ideal model for studying the underlying molecular mechanism of evolutionary chromosomal rearrangements. It is anticipated that the cloning and sequence characterization of evolutionary chromosomal breakpoints will provide vital insights into the molecular force that has driven such a radical karyotype reshuffle in gibbons. We constructed and characterized a high-quality fosmid li-brary of the white-cheeked gibbon (Nomascus leucogenys) containing 192,000 non-redundant clones with an average insert size of 38 kb and 2.5-fold genome coverage. By end sequencing of 100 randomly selected fosmid clones,we generated 196 se-quence tags for the library. These end-sequenced fosmid clones were then mapped onto the chromosomes of the white-cheeked gibbon by fluorescence in situ hy-bridization,and no spurious chimeric clone was detected. BLAST search against the human genome showed a good correlation between the number of hit clones and the number of chromosomes,an indication of unbiased chromosomal distribu-tion of the fosmid library. The chromosomal distribution of the mapped clones is also consistent with the BLAST search result against human and white-cheeked gibbon genomes. The fosmid library and the mapped clones will serve as a valu-able resource for further studying gibbons' chromosomal rearrangements and the underlying molecular mechanism as well as for comparative genomic study in the lesser apes.Liping Chen Jianping Ye Yan Liu Jinghuan Wang Weiting Su Fengtang Yang Wenhui Nie 2007Genomics, Proteomics & Bioinformatics2007,5,3:5
5A multi-responsive luminescent sensor towards Fe_(3+) and acetone based on a Cd-containing metal–organic framework显示文摘A Cd-containing metal–organic framework(Cd L), formula as {[Cd_3(L)_2(H_2O)_6] 1.5DMF}, has been synthesized under solvothermal condition by the reaction of 4,40,400-(methylsilanetriyl)tribenzoic acid(H_3L) and Cd^(2+)ion. Single-crystal X-ray diffraction reveals that Cd L displays a three-dimensional framework with 2-fold interpenetration and DMF molecules locate in the void space of the channels. A topological analysis of the framework indicates Cd L is a 3,4-connected pto net. The photoluminescence properties of Cd L are systematically studied in detail. Impressively, Cd L shows excellent detection performance towards Fe^(3+)ion and acetone in the sensing experiments, which undoubtedly demonstrates the great potential of Cd Lasa highly selective multi-responsive luminescent sensor for the detection of organic solvents and metal ions.Ting Wang Qing-Hui Liu Ying Gao Xiu-Yun Yang Weiting Yang Song Dang Zhong-Ming Sun 2016Chinese Chemical Letters2016,27,4:5
6Corslet: A shared storage system keeping your data private显示文摘With the exponential growth of digital data, it is becoming more and more popular to store data in shared distributed storage systems inside the same organization. In such shared distributed storage systems, an ordinary user usually does not have the control permission over the whole system, and thus cannot secure data storage or data sharing of his own files. To solve this issue, this paper proposes a new system architecture to secure file storing and sharing efficiently over untrusted shared storage and network environments. Based on this architecture, this paper designs and implements a stackable secure storage system called Corslet. Corslet can run directly on deployed underlying storage systems without modification, while bringing end-to-end confidentiality and integrity as well as efficient access control for user data. For individual users, Corslet is easy to use, and does not require users to maintain or manage any keys on their client machines locally. The Bonnie++ and IOzone benchmark results show that the throughput of Corslet over NFS can achieve more than 90% of native NFS throughput in most tests, proving that Corslet can provide enhanced security for user data while maintaining acceptable performance.XUE Weit SHU JiWu LIU fang & XUE Mao 2011Science China(Information Sciences)2011,54,6:5
7Auto-compensation of velocity-height ratio for Chang’E-2 satellite CCD stereo camera显示文摘The TDI-CCD imaging method using auto-compensation of velocity-height ratio (VHR) was applied to Chang’E-2 satellite CCD stereo camera.Factors that influence the image quality of the camera were discussed,among which the mismatch error in VHR was found to be the main cause.An auto-compensation scheme for VHR was developed.The validity and effectiveness were proved by the on-orbit high quality images.XUE Bin ZHAO BaoChang YANG JianFeng GAO Weit QIAO WeiDong MA XiaoLong ZHANG Bo LIU JiaHang ZHAO Wei JING Juan Juan 2011Science China(Technological Sciences)2011,54,9:4
8Culture of yeast cells immobilized by alginate-chitosan microcapsules in aqueous-organic solvent biphasic system显示文摘Immobilization biocatalysis is a potential technology to improve the activity and stability of biocatalysts in nonaqueous systems for efficient industrial production.Alginate-chitosan(AC)microcapsules were prepared as immobilization carriers by emulsifi cation-internal gelation and complexation reaction,and their contribution on facilitating the growth and metabolism of yeast cells were testifi ed successfully in culture medium-solvent biphasic systems.The cell growth in AC microcapsules is superior to that in alginate beads,and the cells in both immobilization carriers maintain much higher activity than free cells,which demonstrates AC microcapsules can confer yeast cells the ability to resist the adverse effect of solvent.Moreover,the performance of AC microcapsules in biphasic systems could be improved by adjusting the formation of outer polyelectrolyte complex(PEC)membrane to promote the cell growth and metabolic ability under the balance of resisting solvent toxicity and permitting substrate diffusion.Therefore,these findings are quite valuable for applying AC microcapsules as novel immobilization carriers to realize the biotransformation of value-added products in aqueous-solvent biphasic systems.HOU Dandan YU Weiting ZHANG Demeng ZHAO Lili LIU Xiudong MA Xiaojun 2019Journal of Oceanology and Limnology2019,37,3:4
9Simultaneously 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
10Solution-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
11Bosonic quantum error correction codes in superconducting quantum circuits显示文摘Quantum information is vulnerable to environmental noise and experimental imperfections,hindering the reli-ability of practical quantum information processors.Therefore,quantum error correction(QEC)that can pro-tect quantum information against noise is vital for universal and scalable quantum computation.Among many different experimental platforms,superconducting quantum circuits and bosonic encodings in superconducting microwave modes are appealing for their unprecedented potential in QEC.During the last few years,bosonic QEC is demonstrated to reach the break-even point,i.e.the lifetime of a logical qubit is enhanced to exceed that of any individual components composing the experimental system.Beyond that,universal gate sets and fault-tolerant operations on the bosonic codes are also realized,pushing quantum information processing towards the QEC era.In this article,we review the recent progress of the bosonic codes,including the Gottesman-Kitaev-Preskill codes,cat codes,and binomial codes,and discuss the opportunities of bosonic codes in various quantum applications,ranging from fault-tolerant quantum computation to quantum metrology.We also summarize the challenges associated with the bosonic codes and provide an outlook for the potential research directions in the long terms.Weizhou Cai Yuwei Ma Weiting Wang Chang-Ling Zou Luyan Sun 2021Fundamental Research2021,1,1:3
12Dynamic 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
13Preparation of protein-loaded microspheres with size ≤ 10 μm by electrostatic droplet generation technology显示文摘The development of non-injection route for protein drugs, especially oral administration, has been the main focus of controlled release of drugs. To overcome obstacles unsolved such as enzyme degradation and penetration barrier of intestinal epi- thelium, technologies using microspheres as carrier of protein drugs have been proven potential to realize oral administration. It has been demonstrated that microspheres can not only protect proteins, but also facilitate the penetration and absorption through Peyer’s patches when the size is smaller than 10 μm. Therefore, the objective of this paper is to prepare protein-loaded microspheres with size ≤ 10 μm. Electrostatic droplet generation technology was used with insulin and hemoglobin as drug models and so- dium alginate as microsphere material. By decreas- ing the surface tension of feed solution by adding surfactant, and improving electric field distribution by changing the shape of container and electrode for gelation solution, protein-loaded microspheres with mean size less than 10 μm were successfully pro- duced through needle with diameter of 400 μm. The microspheres showed good sphericity and narrow size distribution. The mean standard variance of size distribution was 1.61. The encapsulation efficiency of proteins was over 70%. Moreover, the significance analysis of factors influencing the size of protein loaded microspheres was carried out through or- thogonal experiments, which showed that output voltage (U), needle diameter (D) and the distance between needle tips to the surface of gelation solu- tion (δ ) influenced significantly the size of micro-spheres. Finally, the statistic analysis showed that when confidence level was α=0.05, and α=0.1, con- fidence interval of microsphere size can be (6.2545, 10.1735) and (6.6022, 9.8258) correspondingly, suggesting that there is good repeatability and reli- ability for improving electrostatic droplet generation technology to prepare protein-loaded microspheres with size ≤10 μm.XUE Weiming LIU Xiudong YU Weiting MA Xiaojun 2006Chinese Science Bulletin2006,51,3:3
14First Description of Fossil Naucoridae (Heteroptera:Nepomorpha) from Late Mesozoic of China显示文摘此处对二个新石块类和 Naucoridae 的种类的描述和说明, Exilcrus cameriferus 情报。与 sp。11 月和 Miroculus laticephlus 情报。与 sp。11 月,被提供。两个都,种类从迟了的侏罗记被收集到西方的辽宁的早白垩纪 Yixian 形成,中国。新标本的完全的保藏使我们能决定标本的人物这里报导了。这发现从中国代表石块 Naucoridae 的第一个记录,它包括保存得很好的美女。这些标本的一个食肉的习惯的可能性被讨论。ZHANG Weiting YAO Yunzhi REN Dong ZHAO Yunyun 2011Acta Geologica Sinica(English Edition)2011,85,2:3
15Generation and propagation characteristics of electromagnetic vortices in radio frequency显示文摘Electromagnetic vortices, which describe the orbital angular momentum(OAM) carrying waves with a helical phase front, have recently attracted much interest in a radio frequency domain due to their potential applications in many diverse areas. In an OAM-based scenario, the antenna for OAM mode multiplexing/demultiplexing plays an essential role in controlling the overall system performance. In this paper, we demonstrated theoretically and experimentally an easily realized OAM antenna based on the traveling-wave circular loop structure for efficiently multiplexing/demultiplexing multiple OAM modes; in addition, its general propagation characteristics including the polarization, divergence, and radiation pattern are mathematically analyzed. Schemes for antenna size reduction and various radiation pattern manipulations have also been discussed to realize a more flexible and compact system.Shilie Zheng Weite Zhang Zhuofan Zhang Xiaofeng Jin Hao Chi Xianmin Zhang 2016Photonics Research2016,4,5:2
16An 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
17Microstructure change caused by (Cr,Fe) 23 C 6 carbides in high chromium Fe–Cr–C hardfacing alloys显示文摘Chieh Fan Ming-Che Chen Chia-Ming Chang Weite Wu 2006Surface & Coatings Technology2006,,3:2
18Precipitation and strengthening behavior of massive δ-ferrite in dissimilar stainless steels during massive phase transformation显示文摘Chih-Chun Hsieh Dong-Yih Lin Ming-Che Chen Weite Wu 2007Materials Science & Engineering A2007,,1:2
19Metal-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
20Coupled GIMP and CPDI material point method in modelling blast-induced three-dimensional rock fracture显示文摘Three-dimensional rock fracture induced by blasting is a highly complex problem and has received considerable attention in geotechnical engineering.The material point method is firstly applied to treat this challenging task.Some inherent weaknesses can be overcome by coupling the generalized interpolation material point(GIMP)and the convected particle domain interpolation technique(CPDI).For the media in the borehole,unchanged GIMP-type particles are used to guarantee a homogenous blast pressure.CPDITetrahedron type particles are employed to avoid the fake numerical fracture near the borehole for the rock material.A blasting experiment using three-dimensional single-borehole rock was simulated to examine the applicability of the coupled model under realistic loading and boundary conditions.A good agreement was achieved between the simulation and experimental results.Moreover,the mechanism of three-dimensional rock fracture was analyzed.It was concluded that rock particle size and material parameters play an important role in rock damage.The reflected tensile waves cause severe damage in the lower part of the model.Rayleigh waves occur on the top face of the rock model to induce a hoop failure band.Duanying Wan Meng Wang Zheming Zhu Fei Wang Lei Zhou Ruifeng Liu Weiting Gao Yun Shu Hu Xiao 2022International Journal of Mining Science and Technology2022,32,5:2
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