|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Effect of Pouring Process on the Microstructures of Semi-Solid AlSi_7Mg Alloy显示文摘The effect of different pouring temperatures and different pouring heights, the distance between the mouth of the pouring ladle and the top of the mold, on the microstructure of AlSi7Mg alloy have been researched in the paper. When the pouring temperature is close to the liquidus temperature, the primary α-Al in the billets of AlSi7Mg alloy solidified into spherical and nodular fine grains distributed homogeneously. The optimum pouring temperature for semi-solid AlSi7Mg billet with spherical or nodular primary α-Al is 615℃. At the same pouring temperature, the higher the pouring ladle, the more easily the spherical and nodular primary α-Al obtained in the semi-solid AlSi7Mg billet. When the pouring temperature is close to the liquidus temperature and the pouring ladle is relatively high, it is the great cooling rate, the flow of the molten alloy caused by pouring and the large simultaneous solidification region induced by the near liquidus temperature, that promote the formation of spherical or nodular primary α-Al. | Weimin MAO, Chenglin CUT, Aimin ZHAO, Jilian YANG and Xueyou ZHONG Foundry Institute, University of Science and Technology Beijing, Beijing 100083, China | 2001 | Journal of Materials Science & Technology2001，17，6： | 17 |
| 2 | Deep Reinforcement Learning Based Joint Edge Resource Management in Maritime Network显示文摘Due to the rapid development of the maritime networks, there has been a growing demand for computation-intensive applications which have various energy consumption, transmission bandwidth and computing latency requirements. Mobile edge computing(MEC) can efficiently minimize computational latency by offloading computation tasks by the terrestrial access network. In this work, we introduce a space-air-ground-sea integrated network architecture with edge and cloud computing components to provide flexible hybrid computing service for maritime service. In the integrated network, satellites and unmanned aerial vehicles(UAVs) provide the users with edge computing services and network access. Based on the architecture, the joint communication and computation resource allocation problem is modelled as a complex decision process, and a deep reinforcement learning based solution is designed to solve the complex optimization problem. Finally, numerical results verify that the proposed approach can improve the communication and computing efficiency greatly. | Fangmin Xu Fan Yang Chenglin Zhao Sheng Wu | 2020 | China Communications2020，17，5： | 11 |
| 3 | Distribution of chlorpyrifos in rice paddy environment and its potential dietary risk显示文摘Chlorpyrifos is one of the most extensively used insecticides in China. The distribution and residues of chlorpyrifos in a paddy environment were characterized under field and laboratory conditions. The half-lives of chlorpyrifos in the two conditions were 0.9–3.8 days(field) and 2.8–10.3 days(laboratory), respectively. The initial distribution of chlorpyrifos followed the increasing order of water < straw < soil, and soil was characterized as the major absorber. The ultimate residues in rice grain were below the maximum residue limit(MRL) with a harvest interval of 14 days. The chronic exposure for chlorpyrifos was rather low compared to the acceptable daily intake(ADI = 0.01 mg/kg bw) due to rice consumption. The chronic exposure risk from chlorpyrifos in rice grain was 5.90% and 1.30% ADI from field and laboratory results respectively. Concerning the acute dietary exposure,intake estimated for the highest chlorpyrifos level did not exceed the acute reference dose(ARf D = 0.1 mg/kg bw). The estimated short-term intakes(ESTIs) were 0.78% and 0.25% of the ARf D for chlorpyrifos. The results showed that the use of chlorpyrifos in rice paddies was fairly safe for consumption of rice grain by consumers. | Yan Fu Feifei Liu Chenglin Zhao Ying Zhao Yihua Liu Guonian Zhu | 2015 | Journal of Environmental Sciences2015，27，9： | 5 |
| 4 | Technological Parameters and Design of Bionic Integrated Honeycomb Plates显示文摘 | Chenglong Gu Jianxun Liu Jinxiang Chen Chenglin He Yun Lu Yong Zhao | 2014 | Journal of Bionic Engineering2014，11，1： | 4 |
| 5 | Unexpected intercalation-dominated potassium storage in WS2 as a I potassium-ion battery anode显示文摘Unexpected intercalation-dominated process is observed duri ng K^+insertion in WS2 in a voltage range of 0.01-3.0 V.This is different fromthe previously reported two-dimensional(2D)transition metal dichalcogenides that undergo a conversion reaction in a low voltage rangewhen used as anodes in potassium-ion batteries.Charge/discharge processes in the K and Na cells are studied in parallel to demonstrate thedifferention storage mechanisms.The Na^+storage proceeds through intercalation and conversion reactions while the K^+storage is governedby an intercalation reaction.Owing to the reversible K^+intercalation in the van der Waals gaps,the WS2 anode exhibits a low decay rate of 0.07%per cycle,delivering a capacity of 103 mAh·g^-1 after 100 cycles at 100 mA·g^-1.It maintains 57%capacity at 800 mA·g^-1 and shows stablecyclability up to 400 cycles at 500 mA·g^-1.Kinetics study proves the facilitation of K^+transport is derived from the intercalation-dominatedmecha nism.Furthermore,the mechanismis verified by the density functional theory(DFT)calculations,showing that the progressive expansion of the interlayer space can account for the observed results. | Vuhan Wu Yang Xu Yueliang Li Pengbo Lyu Jin Wen Chenglin Zhang Min Zhou Yaoguo Fang Huaping Zhao Ute Kaiser Yong Lei | 2019 | Nano Research2019，12，12： | 3 |
| 6 | Data-aided synchronization algorithm dispensing with searching procedures for UWB communications显示文摘Rapid and accurate synchronization constitutes a major challenge in deploying Ultra-Wideband impulse radio (UWB-IR) for indoor wireless communications.This paper develops a data-aided (DA) synchro-nization algorithm dispensing with searching procedures for UWB-IR communications.By adopting a stream of alternating orthogonal pulses,frame-level synchronization can be achieved without channel information.With-out utilizing any searching procedure,the timing offset estimator is obtained in a closed form.Because exhaustive search can be avoided,both computational complexity and synchronization time are reduced.Simulations and comparisons are provided to illustrate the advantages of our design over the alternatives. | REN ZhiYuan JIANG Ting ZHONG Yi ZHAO ChengLin | 2012 | Science China(Information Sciences)2012，55，4： | 3 |
| 7 | Temperature Field and Microstructural Formation of Semi-Solid AlSi_7Mg Alloy显示文摘The microstructural formation of the semi-solid AlSi7Mg alloy stirred by electromagnetic field is investigated together withthe tempeatre field of the stirred melt at continuously cooling. A impoat kinetic factor for primny a-Al nucleation is proposed. It isfound that a low temperatUre gradient exists in the electromagnetic stirred melt. This is why the first dendritic arms and secondary de-ndritic arms are refmed. Experimefltal results also show that the root remelting of secontw dendritic arms is an twortat mechanismfor the primary α-Al refmement. Strong electromagnetic stirring greatly reduces the composition supercooling in the melt and eliminatesprefedrig growth of the first dendritic arms. Therefore, many rosettes or spherical Primary α-Al phase particles form finally. | Weimin Mao Aimin Zhao Yan jun Li Chenglin Cui Feng Sun Xuryou Zhong(Material Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China) | 2000 | International Journal of Minerals,Metallurgy and Materials2000，14，2： | 2 |
| 8 | Software defined industrial network architecture for edge computing offloading显示文摘The integration of the Internet and the traditional manufacturing industry makes the industrial Internet of things(IIoT) as a popular research topic. However, traditional industrial networks continue to face challenges of resource management and limited raw data storage and computation capacity. A novel software defined industrial network(SDIN) architecture was proposed to address the existing drawbacks in IIoT such as resource utilization, data processing and storage, and system compatibility. The architecture is developed based on the software defined network(SDN) architecture, combining hierarchical cloud and fog computing and content-aware caching technologies. Based on the SDIN architecture, two types of edge computing strategies in industrial applications are discussed. Different scenarios and service requirements are considered. The simulation results confirm that the SDIN architecture is feasible and effective in the application of edge computing offloading. | Xu Fangmin Ye Huanyu Cui Shaohua Zhao Chenglin Yao Haipeng | 2019 | The Journal of China Universities of Posts and Telecommunications2019，26，1： | 2 |
| 9 | The effect of pore size and porosity of Ti6Al4V scaffolds on MC3T3-E1 cells and tissue in rabbits显示文摘Electron beam melting(EBM) allows the fabrication of specific porous titanium implants, whereas their in vitro and in vivo biological performance should be further investigated. In this study, we examined the porous Ti6 Al4 V scaffolds(low, 334.1 μm pore size with 55.4% porosity;middle, 383.2 μm pore size with 65.2% porosity;and high, 401.6 μm pore size with 78.1%porosity) fabricated through EBM. The structural characterization and mechanical properties of porous Ti6 Al4 V scaffolds were measured through micro-computed tomography(micro-CT), scanning electron microscopy, and a material testing system.MC3 T3-E1 cells were used to assess the proliferation and differentiation of the cells on different scaffolds at day 7 and day 14 based on the expression levels of genes, including alkaline phosphatase, bone morphogenetic protein-2, osteopontin and runtrelated transcription factor-2. Rabbits with distal femoral defects were utilized to evaluate bone ingrowth in the porous titanium.All of the samples were subjected to micro-CT and histological analysis after 12 weeks. Results showed that compressive Young’s modulus of 0.3–1.1 GPa was similar to the trabecular bone. The three types of porous Ti6 Al4 V scaffolds were inclined to promote cell proliferation, whereas cell differentiation and bone ingrowth into the porous scaffolds were biased to the porous titanium with relatively large pores and porosity(middle and high). This study implied that the present porous implant design,which had the combined advantages of different pore sizes and porosity, might be meaningful and promising for trabecular bone defect restoration. | LUAN HuiQin WANG LiTing REN WeiYan CHU Zhao Wei HUANG YunFei LU ChengLin FAN YuBo | 2019 | Science China(Technological Sciences)2019，62，7： | 2 |
| 10 | Oroxylin A inhibits matrix metalloproteinase-2/9 expression and activation by up-regulating tissue inhibitor of metalloproteinase-2 and suppressing the ERK1/2 signaling pathway显示文摘 | Zhijian Lu Na Lu Chenglin Li Fanni Li Kai Zhao Biqi Lin Qinglong Guo | 2012 | Toxicology Letters2012，，3： | 2 |
| 11 | RESEARCH ON PERFECT DYADIC BINARY SEQUENCE PAIR显示文摘In this paper, the perfect dyadic binary sequence pair with one-value dyadic correlation functions is presented. That is, the perfect dyadic binary sequence pair is a perfect discrete signal, for its dyadic relative function is δ-function. The transformation features and some existing admissibility conditions of perfect dyadic binary sequence pair are discussed, and the properties for this kind of code in Walsh transformation spectrum and weight spectrum are also analyzed. From above, It is found that the perfect dyadic binary sequence pair can easily differentiate from its dyadic shifting. So these good signals can used in engineering as synchronization code, multi-user code and so on. | Mao Fei Jiang Ting Zhao Chenglin Zhou Zheng | 2006 | Journal of Electronics(China)2006，23，3： | 2 |
| 12 | Tailoring Microstructure and Microsegregation in a Directionally Solidified Ni-Based SX Superalloy by a Weak Transverse Static Magnetic Field显示文摘A weak transverse static magnetic field(WTSMF,0–0.5 T)is applied to the directional solidification process of a DD3 Ni-based SX superalloy,aiming to tailor the microstructure and microsegregation of alloys.The mechanisms of microstructural refinement and microsegregation distribution caused by a WTSMF during directional solidification are discussed.It is shown that the primary dendrite arm spacing is rapidly reduced from 181 to 143μm,and the average size ofγ′phase is significantly refined from 0.85 to 0.25μm as the magnetic field increases from 0 to 0.5 T.At the same time,the volumefractions ofγ/γ′eutectic and the segregation coefficient are also gradually decreased.The 3D numerical simulations of the multiscale convection in liquid phase show that the modifications of the microstructure and microsegregation in DD3 are mainly attributed to the enhanced liquid flow caused by thermoelectric magnetic convection(TEMC)at dendrite/sample scale under the WTSMF.The maximum of the TEMC increases with increasing the magnetic field intensity.This work paves a simple way to optimize the microstructure and microsegregation in directionally solidified Ni-based SX superalloys without changing the processing parameters and composition. | Yong Zhao Haijun Su Guangrao Fan Chenglin Liu Taiwen Huang Wenchao Yang Jun Zhang Lin Liu Hengzhi Fu | 2022 | Acta Metallurgica Sinica(English Letters)2022，35，7： | 1 |
| 13 | Influence of photo-cross-linking on emulsifying performance of the self-assemblies of poly(7-(4-vinylbenzyloxyl)-4-methylcoumarin-co-acrylic acid)显示文摘 | YI Chenglin SUN Jianhua ZHAO Donghua | 2014 | Langmuir2014，30，23： | 1 |
| 14 | Fault diagnosis of sensor by chaos particle swarm optimization algorithm and support vector machine显示文摘 | ZHAO Chenglin SUN Vuebin SUN Songlin | 2011 | Expert Systems with Applications2011，38，： | 1 |
| 15 | Evaporation Stage of Paleo-saline Lake in the Sichuan Basin, China: Insight from Fluid inclusions in Halite显示文摘Sichuan Basin is one of the most important marine–salt forming basins in China. The Simian and Triassic have a large number of evaporites. The Triassic strata have found a large amount of polyhalite and potassium-rich brine. However, no soluble potassium salt deposit were found. In this study, the halite in well Changping 3 which is located at the eastern part of the Sichuan basin was studied using the characteristics, hydrogen and oxygen isotopes of the fluid inclusion in halite to reconstruct the paleoenvironment. The salt rocks in well Changping 3 can be divided into two types: grey salt rock and orange salt rock. The result shows that the isotopic composition of the halite fluid inclusion is distinct from the global precipitation line reflecting that the salt formation process is under strong evaporation conditions and the climate is extremely dry. At the same time, compared with the hydrogen and oxygen isotopes of brine in the Sichuan Basin and the hydrous isotope composition of the inclusions in the salt inclusions of other areas in China, it is shown that the evaporation depth of the ancient seawater in the Sichuan Basin was high and reached the precipitation of potassium and magnesium stage. | DING Ting LIU Chenglin GUO Fusheng ZHAO Yanjun WANG Mingquan CHEN Liuqin | 2020 | Acta Geologica Sinica(English Edition)2020，94，3： | 1 |
| 16 | Prediction of decline in shale gas well production using stable carbon isotope technique显示文摘Prediction of shale gas production is a challenging task because of the complex fracture-pore networks and gas flow mechanisms in shale reservoirs.Empirical methods,which are used in the industry to forecast the future production of shale gas,have not been assessed sufficiently to warrant high confidence in their results.Methane carbon isotopic signals have been used for producing gas wells,and are controlled by physical properties and physics-controlling production;they serve as a unique indicator of the gas production status.Here,a workable process,which is combined with a gas isotope interpretation tool(also known as a numerical simulator),has been implemented in Longrnaxi shale gas wells to predict the production decline curves.The numerical simulator,which takes into account a convection-diffu-sion-adsorption model for the matrix and a convection model for fractures in^(13)CH_(4) and ^(12)CH_(4) isotopologues,was used to stabilize the carbon isotope variation in the produced gas to elucidate gas recovery.Combined with the production rates of the four developing wells,the total reserves ranged from 1.72×10^(8) to 2.02×10^(8) m^(3),which were used to constrain the trend of two-segment produc-tion decline curves that exhibited a transition from a hyperbolic equation to an exponential one within 0.82-0.89 year.Two-segment production decline curves were used to forecast future production and estimate ultimate recovery. | Shengxian ZHAO Shujuan KANG Majia ZHENG Shuangfang LU Yunfeng YANG Huanxu ZHANG Yongyang LIU Ziqiang XIA Chenglin ZHANG Haoran HU Di ZHU | 2021 | Frontiers of Earth Science2021，15，4： | 1 |
| 17 | Fault diag- nosis of sensor by chaos particle swarm optimization algorithm and support vector machine 显示文摘 | Zhao Chenglin Sun Xuebin Sun Songlin | 2011 | Expert Systems with Appli- cations2011，38，8： | 1 |
| 18 | Fault diagnosis of sensor by chaos particle swarm optimization algorithm and support vector machine显示文摘 | Zhao Chenglin Sun Xuebin Sun Songlin | 2011 | Expert Systems with Applications2011，38，8： | 1 |
| 19 | Cycle-Sequences,Carbon Isotope Features and Glacio-Eustasy of the Triticites Zone in Southern Guizhou显示文摘In light of the principle of sequence stratigraphy, detailed analysis of depositionalsequences and systematical carbon isotope measurements were done for the Triticites zone ofthe typical Late Carboniferous section in the Dushan area of southern Guizhou. Two sequencesand seventeen parasequences, which can be correlated with the two sequences and seventeensubsequences in the North American Midcontinent, are distinguished in the Gzhelian, whichprovides convincing evidence of the global synchroneity of the depositional records. The inter-nal relations between carbon isotope evolution and eustasy were studied and the evolutionarycharacteristics of carbon isotopes in depositional sequences have been summarized. | Li Rufeng Liu Benpei and Zhao Chenglin University of Petroleum, Beijing China University of Geosciences, Beijing University of Petroleum, Beijing | 1997 | Acta Geologica Sinica(English Edition)1997，71，2： | 1 |
| 20 | The First Halite Age Revealed by MC-ICP-MS U-series Dating in Lop Nur, Northwestern China显示文摘Objective Quaternary saline lakes are significant for paleoclimatic reconstruction due to the high sensitivity of salt minerals to environmental changes.However,salts in these areas with great thickness such as halite or potash representing extreme environments have severely blocked the application of traditional chronological methods.This is typified by Lop Nur,since accurate age to constrain | LU Fenglin LIU Chenglin JIAO Pengcheng ZHAO Jianxin ZHANG Hua | 2018 | Acta Geologica Sinica(English Edition)2018，92，2： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员