|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Elastic Scattering of 7Be on Pb Target显示文摘 | Yang Yanyun Wang Jiansong Wang Qi Huang Meirong Ma Junbing Ma Peng Cao Xiguang Han Jianlong Bai Zhen Jin Shilong Hu Qiang Jin Lei Chen Jiangbo Zhang Xueying Chen Ruofu Hu Zhengguo Xu Shiwei Zhen Chuan Xu Zhiguo Xu Hushan Duan Liming Sun Zhiyu Chen Zhiqiang He Jianjun Li Songlin Lei Xiangguo Fu Fen Zhang Xueheng Yuan Xiaohua Du Chengming Yan Xinshuang Hu Jun Tang Shuwen Ye Ruiping Yang Kun Shi Fudong Zhang Wei Chen Ze Li Long Xu Xing Liu Longxiang Zhang Liyong Lin Qingyun Gou Boxing Xu Ge Zhou Xionghong Zhang Yuhu Xiao Guoqing | 2011 | IMP & HIRFL Annual Report2011，，1： | 4 |
| 2 | Syntactic Characteristics and a Smart Construction Mechanism for Thematic Map Symbols显示文摘The construction of thematic map symbols is a very complex and intellectually demanding process,but thematic symbols can be automatically generated and easily shared on the web using the syntactic structure of semantic symbols.In this paper,the symbol types,inner structure,and design pattern are discussed.A syntactic construction theory based on letter (thematic maps primitive)-word (single thematic symbol)-sentence (combined symbols or complex symbols) structure model is proposed to automate the construction of thematic map symbols.As a result of this research,symbols can be defined using cartographic primitives which are arranged according to syntactic principles.A semiotic model and word-centered construction theory can be integrated into interactive cartography as represented by the technology of Internet.Finally,the concepts and schema of this theory are discussed,and some examples are presented based a web thematic cartographic system to verify its utility. | Fei ZHAO Qingyun DU Fu REN Guizhi WANG | 2019 | Journal of Geodesy and Geoinformation Science2019，2，1： | 2 |
| 3 | Spatial analysis of the home ad- dresses of hospital patients with hepatitis B infection or hepatoma in Shenzhen, China from 2010 to 2012 显示文摘 | Hu Tao Du Qingyun Ren Fu | 2014 | International Journal of Envil'onmental Research and Public Health2014，11，3： | 1 |
| 4 | Spatial Analysis of the Home Addresses of Hospital Patients with Hepatitis B Infection or Hepatoma in Shenzhen, China from 2010 to 2012显示文摘 | Hu Tao Du Qingyun Ren Fu Liang Shi Lin Denan Li Jiajia Chen Yan | 2014 | International Journal of Environmental Research and Public Health2014，，3： | 1 |
| 5 | An intermediate poly-dopamine layer for alginate coating on high-purity magnesium to achieve corrosion mitigation显示文摘Although magnesium(Mg)and its alloys are proposed as the next generation orthopedics transplanted materials,their clinical applications are limited by the fast degradation.To reduce the degradation rate,a strong adhesion poly-dopamine(PDA)layer was introduced as an intermediate layer for the subsequent alginate(ALG)spin-coating on high-purity Mg.The surface morphology and chemical composition were detected by scanning electron microscope,energy disperse spectroscopy,and Fourier transform infrared spectroscopy.The corrosion resistances of all samples were evaluated by electrochemical and 10-day immersion tests in Hanks’balanced salt solution.Our results suggest that the thickness of the fabricated PDA/ALG composite coating is 8.58±0.65μm,and the intermediate PDA layer evidently enhances the adhesion between the substrate and ALG coating.The corrosion current density of Mg coated with the PDA/ALG composite coating decreases more than 10 times compared to that of the Mg substrate,and the charge transfer resistance is 12 times bigger than that of the bare Mg,which indicates the improved corrosion resistance.Moreover,the mechanism of corrosion protection of the composite coating is also discussed. | Qingyun Fu Weihong Jin Mingcheng Feng Jingyao Li Jian Li Wei Li Zhentao Yu | 2023 | Journal of Magnesium and Alloys2023，11，6： | 0 |
| 6 | A two-step three dimensional marine magnetotelluric inversion method with considering rugged seafloor topography:Synthetic studies显示文摘Inversion of magnetotelluric(MT) responses has been used to explore the electrical conductivity distribution of the Earth’s interior. In three-dimensional(3-D) inversions, it is significant to use a good initial model, because final model obtained by most 3-D inversion methods is influenced by the initial model. Although uniform initial models are widely used in 3-D inversions, one-dimensional(1-D) initial models are alternatives, which could more appropriately represent the actual conductivity variations in the Earth’s interior. This study presents a two-step 3-D inversion method, especially for marine cases. This inversion method first concentrates on obtaining a 1-D initial model and then inverts for 3-D conductivity structures with it, in both of which the 3-D topography is carefully taken into consideration. This method was tested by synthetic models of different topography variations(depression-shaped, smoothly varying, channel-shaped and square-shaped plateau topography) and of heterogeneous layers with different checkerboard-type anomalies(sharp or smooth lateral conductivity variations) embedded in1-D model of depth-dependent conductivity. The comparisons were done about obtaining an initial model by the proposed method and that inverted from the corrected responses. The results of 3-D inversions by using the method of this study were also compared to that with different uniform initial models. Results of synthetic tests and comparisons were discussed by using directional information of newly introduced model-vector parameters. The performance and validity of this method was verified.It also revealed that some of the newly introduced model-vector parameters could be used to show the convergence of inversions and help to select inverse model. | Pengfei LIANG Qingyun DI Changmin FU Ruo WANG Qihui ZHEN Zhe YUN Jiagang ZHANG | 2023 | Science China Earth Sciences2023，66，4： | 0 |
| 7 | Summary of technology for a comprehensive geophysical exploration of gold mine in North China Craton显示文摘The North China Craton is the oldest continental block,and has suffered from large-scale lithospheric thinning and destruction,which in turn led to gold deposits in northern China.The decratonic gold deposits in the North China Craton became the most important gold deposits in China,and geophysical methods are key means to detect and discover gold deposits there.In this paper,based on the geological and petrophysical characteristics of the North China Craton,the geological model of the decratonic gold deposits is transformed into a geophysical model.At present,two methods of geophysical exploration of decratonic gold deposits are in use:rapid and efficient exploration on the scale of the ore concentration area,and large depth exploration on the scale of the deposit area.In detail,the airborne electromagnetic,magnetic and gravity methods are used to detect the shallow(1,500 m)anomaly area on the scale of the ore concentration area.Through the ground-controlled source electromagnetic and ground magnetotelluric methods,explorations for targets at significant depth(5,000 m)are carried out in the mining area.Then,taking the Liaodong ore concentration area as an example,geophysical methods are used to discover two prospecting areas around the Jianshanzi Fault in the Qingchengzi ore concentration area,Baiyun-Xiaotongjiapuzi deep prospecting area,and Qingchengzi deep prospecting area.Next,three prospecting areas are delineated around the Jixingou Fault in the Wulong mining area,Wulong deep prospecting area,Weishagou deep prospecting area,and Chang’an deep prospecting area.The anomalies in the ore concentration area and mining area are revealed by means of three-dimensional exploration methods,thereby providing technical support for the exploration of metal minerals such as decratonic gold deposits. | Qingyun DI Guoqiang XUE Da LEI Qingdong ZENG Changmin FU Zhiguo AN | 2021 | Science China Earth Sciences2021，64，9： | 0 |
| 8 | Research perspective and prospective of additive manufacturing of biodegradable magnesium-based materials显示文摘Biodegradable metals such as magnesium(Mg)and its alloys have attracted extensive attention in biomedical research due to their excellent mechanical properties and biodegradability.However,traditional casting,extrusion,and commercial processing have limitations in manufacturing components with a complex shape/structure,and these processes may produce defects such as cavities and gas pores which can degrade the properties and usefulness of the products.Compared to conventional techniques,additive manufacturing(AM)can be used to precisely control the geometry of workpieces made of different Mg-based materials with multiple geometric scales and produce desirable medical products for orthopedics,dentistry,and other fields.However,a detailed and thorough understanding of the raw materials,manufacturing processes,properties,and applications is required to foster the production of commercial Mg-based biomedical components by AM.This review summarizes recent advances and important issues pertaining to AM of Mg-based biomedical products and discusses future development and application trends. | Qingyun Fu Wenqi Liang Jiaxin Huang Weihong Jin Baisong Guo Ping Li Shulan Xu Paul K.Chu Zhentao Yu | 2023 | Journal of Magnesium and Alloys2023，11，5： | 0 |
| 9 | Adaptive rate control on wireless transcoder显示文摘To guarantee the real-time transmission of a video stream,based on the stochastic optimal control method,a frame layer adaptive rate control algorithm for the wireless transcoder is proposed,which is capable of dynamically determining the transcoder's objective bit rate,according to the bandwidth variation of the wireless channel and the buffer occupancy.Then the transient performance,steady performance,and computational com- plexity of the algorithm are analyzed.Finally,the experiment results demonstrate that the algorithm can improve the synthetic performance of rate control through the compromise between the end-to-end delay and the playout quality. | Chen Xudong Zhu Qingxin Liao Yong Fu Qingyun Xiong Guangze | 2007 | Journal of Systems Engineering and Electronics2007，18，3： | 0 |
| 10 | Guide Rules for Electronic Atlas Project in China显示文摘Electronic atlas project (E-atlas project) plays a n important role in the procedure of popularizing maps and is diversifying its a pplication widely in China. Practice for E-atlas projects is a basic approach f or achieving public accessibility to national spatial data infrastructure (N SDI) and meets people’s inherent needs of updated maps. This paper provides a d escription and assessment of an integration of E-atlas projects, analyzes curre nt progress and characters of E-atlas project, summarizes basic guide rules, an d provides solution and interpretation. It depicts a conceptual framework of an authoring toolkit that is driven by application of E-atlas on the basis of succ essful instances. The toolkit which improves interactive interface, decreases op erational difficulties is developed in Visual C++ and used widely in China. | REN Fu DU Qingyun | 2006 | Geo-Spatial Information Science2006，9，1： | 0 |
| 11 | Insight into skywave theory and breakthrough applications in resource exploration显示文摘Skywave refers to the electromagnetic wave reflected or refracted from the ionosphere and propagated in the form of a guided wave between the ionosphere and the Earth’s surface.Since the skywave can propagate over large distances,it has been widely used in long-distance communication.This paper explores and demonstrates the feasibility of skywave for deep resource and energy exploration at depths of up to 10 km.Theoretical and technical advancements were accomplished in furthering skywave applications.A new solution method based on Green’s function has been developed to study skywave propagation in a fully coupled lithosphere-air-ionosphere full space model.For the first time,the model allows one to study skywave distribution characteristics in the lithosphere containing inhomogeneity such as ore deposits or oil and gas reservoirs.This model also lays a foundation for skywave data processing and interpretation.On a parallel line,we have developed a multi-channel,broadband,low-noise,portable data acquisition system suitable for receiving skywave signals.Using the skywave field excited by a high-power fixed source located in central China,actual field surveys have been carried out in some areas in China including the Biyang depression of Henan Province.The initial results appear encouraging—the interpreted resistivity models prove to be consistent with those of seismic exploration and known geological information,and the exploration cost is only~1/4 to 1/10 that of seismic surveys.These initial successful applications of the skywave theory lay a solid foundation for further verification of the new method. | Qingyun Di Changmin Fu Guoqiang Xue Miaoyue Wang Zhiguo An Ruo Wang Zhongxing Wang Da Lei Xianjun Zhuo | 2021 | National Science Review2021，8，12： | 0 |
| 12 | Whether the digital economy will successfully encourage the integration of urban and rural development: A case study in China显示文摘The digital economy has become an important driver for stimulating economic growth.The digital economy has now widely penetrated the fields of economy and society,providing new opportunities for the develop‐ment of urban-rural integration.Based on panel data for 30 provinces in China from 2011 to 2020,this study constructed an index system for the integration of the digital economy and the development of urban-rural areas and conducted a systematic measurement analysis.Additionally,we used a two-step system of GMM estimation to analyze the impact of the digital economy on the development of urban-rural integra‐tion.The findings demonstrate the significant imbalance paradox of China’s digital economy development,which is shown in a gradient where the eastern region is higher than the center and the central region is higher than the west.Urban-rural integration levels in China fluctuate and display geographical variance,typically displaying high levels in the east and low levels in the west.Urban-rural integration is significantly encouraged by the digital economy,yet it varies in variability between different areas and dimensions.Addi‐tionally,rural human capital moderates the favorable effects of the digital economy on urban-rural integra‐tion.As a result,in order to achieve the integrated development of urban and rural areas,it is imperative to fully exploit the active role of the digital economy,better support the development of rural revitalization,bridge the“digital divide”between urban and rural development,and build a strong foundation for the for‐mation of a digital urban-rural integrated development pattern with urban and rural areas and common con‐struction and sharing. | Yafei Wang Qingyun Peng Chao Jin Jin Ren Yuanyuan Fu Xiaofeng Yue | 2023 | Chinese Journal of Population,Resources and Environment2023，21，1： | 0 |
| 13 | A viscosity model of waxy-hydrate slurry显示文摘With the exploration and development of oil and gas fileds going towards into deep-water fields,high waxy reservoir has much more flow assurance issues of encourage complex solids depositions in the transportation system,especially hydrates and wax.Applying risk management such as hydrate slurry technology to control hydrate blockage,has much more economic and technical advantages,comparing to the traditional methods.It is significant to understand the viscosity of the waxy-hydrate slurry using hydrate slurry technology in high wax content reservoir.In this work,based on a simplification idea by coupling the wax content effect into the viscosity,volume and density of the water-in-waxy oil emulsion,a new viscosity model of waxy-hydrate slurry is established according to the Einstein effective medium theory,based on the experiments carried out in a high-pressure rheology system with different wax contents ranging from 0.5 wt%~2.0 wt%.The effect of the complex aggregate coupling wax-hydrate-water is considered by function the non-Newtonian coefficient by four dimensionless parameters.Well-fitting results within an improved deviation of±15%indicate the feasibility of this method is feasibility.This work can provide a valuable reference for the application of hydrate slurry technology in deep-water fields with high wax content reservoir. | Hongju Chen Shunkang Fu Shuai Chai Qingyun Liao Bohui Shi Jing Gong | 2021 | Petroleum2021，7，4： | 0 |
| 14 | Change of Geographic Information Service Model in Mobile Context显示文摘A research on that how the topic of mobility, which is completely different but tightly relevant to space, provides new approaches and methods so as to promote the further development of geographic information services, will accumulate basic experience for different types of relative information systems in the wide fields of location based services. This paper analyzes the meaning of mobility and the change for geographic information service model, it describes the differences and correlation between M GIS and traditional GIS. It sets a technical framework of geographic information services according to mobile context and provides a case study. | REN Fu DU Qingyun | 2005 | Geo-Spatial Information Science2005，8，4： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员