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20篇 您的检索式:作者名="G.P. Zhang"
    题名 作者 年代 出处 被引量
1Effect of scanning strategy on grain structure and crystallographic texture of Inconel 718 processed by selective laser melting显示文摘Two types of scanning strategies were adopted to study the effect of scanning strategy on grain structure and crystallographic texture of selective laser melted(SLM) Inconel 718. The results show that bidirectional scanning without and with a 90?-rotation for every layer produced the bimodal grain structure and the directional columnar grain structure, respectively. Controlling the heat flux direction between the successive layers via scanning strategy enabled the formation of such different grain structures. Furthermore, when the 90?-rotation was applied, the competitive grain growth mechanism became more pronounced and the strong cube texture developed.H.Y. Wan Z.J. Zhou C.P. Li G.F. Chen G.P. Zhang 2018Journal of Materials Science & Technology2018,34,10:22
2Microstructures and Mechanical Properties of Al/Mg Alloy Multilayered Composites Produced by Accumulative Roll Bonding显示文摘Al/Mg alloy multilayered composites were produced successfully at the lower temperature(280 C) by accumulative roll bonding(ARB) processing technique.The microstructures of Al and Mg alloy layers were characterized by scanning electron microscopy and transmission electron microscopy.Vickers hardness and three-point bending tests were conducted to investigate mechanical properties of the composites.It is found that Vickers hardness,bending strength and stiffness modulus of the Al/Mg alloy multilayered composite increase with increasing the ARB pass.Delamination and crack propagation along the interface are the two main failure modes of the multilayered composite subjected to bending load.Strengthening and fracture mechanisms of the composite are analyzed.H.S. Liu B. Zhang G.P. Zhang 2011Journal of Materials Science & Technology2011,27,1:21
3Biogenic carbonate formation and sedimentation in the Xisha Islands: evidences from living Halimeda显示文摘A recent island survey reveals that the Xuande Atoll and the Yongle Atoll in the Xisha Islands can be classified into one of two systems: the depleted atoll system and growth atoll system; the survey also indicates that the decreased area of several shoals is an unbearable burden for the Xisha Islands, of which the largest island area is 2.13 km2 and the minimum elevation is 1.4 m. According to a survey on the ecological characteristics of Halimeda in the Laolongtou breaker zone of Shidao Island in the Xisha Islands, the green and white living Halimeda are collected,the isotopic ages of 14 C contained in the Halimeda are shown to be 27 years and 55 years, respectively, and carbonate mainly occurs in five types, i.e., luster, segment, sand, sand grain, and marl in the formation. The Halimeda segments mainly provide the carbonate sediments of long-term biogenic deposits in the reef environment and the annual productivity per area is 60–100 g/m2; the characteristics of the microstructure of the Halimeda are analyzed, the aragonite raphide carbonate is deposited and enriched in the cortexes, medullas and cysts, and the Halimeda generally contain major elements such as C, O, Ca, Cl, Mg, K, Na, S and Al, and are rich in trace elements such as tellurium(Te), rhodium(Rh) and strontium. It is believed that the Halimeda grow slowly,including the biotic community of reef corals in the reef areas, thus they possess an environmental remediation capacity, but it takes much time to remedy the environment, and it is necessary to make the law to protect the diversity and vulnerability of the Xisha marine ecology, the ecology of the reef community and the island environment in a scientific way. As indicated in the survey, under the background of global warming and sea-level rise, the discovery of large amounts of Halimeda in the Laolongtou sea area is significant for the natural increase of the depleted atoll system of the Xuande Atoll, while the Halimeda segments represent the primary form of the fossil Halimeda, of which the species can be identified and preserved in great numbers under geological conditions. The Miocene was discovered in large amounts in the Xichen-1 well, therefore the study on the characteristics and mechanism of Halimeda carbonate sediments plays a pivotal role in the formation and construction of organic reefs in the South China Sea as well as oil and gas exploration.XU Hong ZHAO Xinwei EBERLI G.P. LIU Xinyu ZHU Yurui CAI Ying LUO Wei YAN Guijing ZHANG Bolin WEI Kai SHI Jian 2015Acta Oceanologica Sinica2015,34,4:4
4Effects of Interface and Grain Boundary on the Electrical Resistivity of Cu/Ta Multilayers显示文摘The electrical resistivity of Cu/Ta multilayers deposited by radio-frequency magnetron sputtering on a polyimide substrate was investigated as a function of monolayer thickness.It is found that the resistivity of the multilayer increases with decreasing monolayer thickness from 500 nm to 10 nm.Two significant effects of layer interface scattering and grain boundary scattering were identified to dominate electronic transportation behavior in the Cu/Ta multilayers at different length scales.The electrical resistivity of the multilayer with monolayer thickness ranging from nanometer to submicron scales can be well described by a newly-proposed Fuchs-Sandheimair (F-S)and Mayadas-Shatzkes(M-S)combined model.M. Wang B. Zhang G.P. Zhang Q.Y. Yu C.S. Liu 2009Journal of Materials Science & Technology2009,25,5:3
5Development of an immunochromatographic lateral flow test strip for detection of β-adrenergic agonist Clenbuterol residues显示文摘G.P. Zhang X.N. Wang J.F. Yang Y.Y. Yang G.X. Xing Q.M. Li D. Zhao S.J. Chai J.Q. Guo 2006Journal of Immunological Methods2006,,1:2
6Characteristics of porosity and permeability layer of fossil Halimeda reef mineral rock of Miocene in the Xisha Islands and its genetic model显示文摘Halimeda is one of the major reef-building algas in the middle Miocene of Xisha, and one of the significant reefbuilding algas in the algal reef oil and gas field of the South China Sea. However, there have been few reports regarding the characteristics of mineral rocks, reservoir porosity and permeability layers, and sedimentationdiagenetic-evolution of fossil Halimeda systems. The present paper briefly introduces the relevant studies on chlorophyta Halimeda and the research status of oil and gas exploration. Through the 1 043 m core of the Xichen-1 well, we studied the characteristics of the mineral rocks and porosity and permeability of the middle Miocene Halimeda of the Yongle Atoll, identified and described the segments of fossil Halimeda, and pointed out that most of the segment slides are vertical sections in ovular, irregular or long strips. The overwhelming majority of these fossil Halimeda found and studied are vertical sections instead of cross sections. In this paper, knowledge regarding the cross sections of fossil Halimeda is reported and proven to be similar with the microscopic characteristics of modern living Halimeda; fossil Halimeda are buried in superposition; it is shown that there are different structures present, including typical bio-segment structure, and due to its feature of coexisting with red alga, tying structure, twining structure and encrusting structure are all present; and finally, it is suggested to classify the fossil Halimeda into segment algal reef dolomites. In addition, all of the studied intervals are moderately dolomitized. Secondary microcrystalline-dolosparite dominates the original aragonite raphide zones,and aphanitic-micrite dolomite plays the leading role in the cortexes and medullas; in the aragonite raphide zones between medulla and cysts, secondary dissolved pores and intercrystalline pores are formed inside the segments, and algal frame holes are formed between segments; therefore, a pore space network system(dissolved pores + intragranular dissolved pores—intercrystalline pores + algal frame holes) is established. Segment Halimeda dolomite has a porosity of 16.2%–46.1%, a permeability of 0.203×10–3–2 641×10–3 μm2, and a throatradius of 23.42–90.43 μm, therefore it is shown to be a good oil and gas reservoir. For the reasons mentioned above, we suggest building the neogene organic reef-modern reef sedimentation-diagenetic-evolution models for the Xisha Islands.XU Hong ZHU Yurui EBERLI G.P. LUO Wei ZHAO Xinwei CAI Ying LIU Xinyu YAN Guijing ZHANG Bolin WEI Kai CUI Ruyong 2015Acta Oceanologica Sinica2015,34,4:1
7Predicting dynamic behaviours of a whole machine tool structure based on computer-aided engineering显示文摘G.P. Zhang Y.M. Huang W.H. Shi W.P. Fu 2003International Journal of Machine Tools and Manufacture2003,,7:1
8Swift heavy ions induced irradiation effects in monolayer graphene and highly oriented pyrolytic graphite显示文摘J. Zeng H.J. Yao S.X. Zhang P.F. Zhai J.L. Duan Y.M. Sun G.P. Li J. Liu 2014Nuclear Inst. and Methods in Physics Research, B2014,,:1
9Nucleos(t)ide Analogues Only Induce Temporary Hepatitis B e Antigen Seroconversion in Most Patients With Chronic Hepatitis B显示文摘Jurri?n G.P. Reijnders Moniek J. Perquin Ningping Zhang Bettina E. Hansen Harry L.A. Janssen 2010Gastroenterology2010,,2:1
10Genotypic and spike positional difference in grain phytase activity, phytate, inorganic phosphorus, iron, and zinc contents in wheat ( Triticum aestivum L.)显示文摘Z.H. Liu H.Y. Wang X.E. Wang G.P. Zhang P.D. Chen D.J. Liu 2006Journal of Cereal Science2006,,2:1
11Phytase activity, phytate, iron, and zinc contents in wheat pearling fractions and their variation across production locations显示文摘Z.H. Liu H.Y. Wang X.E. Wang G.P. Zhang P.D. Chen D.J. Liu 2006Journal of Cereal Science2006,,3:1
12On size effects on fatigue properties of metal foils at micrometer scales显示文摘C.Y. Dai B. Zhang J. Xu G.P. Zhang 2013Materials Science & Engineering A2013,,:1
13Efficient down- and up-conversion of Pr 3+ –Yb 3+ co-doped transparent oxyfluoride glass ceramics显示文摘Q.J. Chen W.J. Zhang X.Y. Huang G.P. Dong M.Y. Peng Q.Y. Zhang 2011Journal of Alloys and Compounds2011,,:1
14Nucleos(t)ide Analogues Only Induce Temporary Hepatitis B e Antigen Seroconversion in Most Patients With Chronic Hepatitis B显示文摘Jurri?n G.P. Reijnders Moniek J. Perquin Ningping Zhang Bettina E. Hansen Harry L.A. Janssen 2010Gastroenterology2010,,2:1
15Predicting dynamic behaviours of a whole machine tool structure based on computer-aided engineering显示文摘G.P. Zhang Y.M. Huang W.H. Shi W.P. Fu 2003International Journal of Machine Tools and Manufacture2003,,7:1
16Data-driven evaluation of fatigue performance of additive manufactured parts using miniature specimens显示文摘This overview firstly introduces the state-of-the-art research progress in length scale-related fatigue performance of conventionally-fabricated metals evaluated by miniature specimens. Some key factors for size effects sensitive to microstructures including the specimen thickness, grain size and a ratio between them are highlighted to summarize some general rules for size effects. Then, ongoing research progress and new challenges in evaluating the fatigue performance of additive manufactured parts controlled by location-specific defects, microstructure heterogeneities as well as mechanical anisotropy using miniature specimen testing technique are discussed and addressed. Finally, a potential roadmap to establish a data-driven evaluation platform based on a large number of miniature specimen-based experiment data,theoretical computations and the ’big data’ analysis with machine learning is proposed. It is expected that this overview would provide a novel strategy for the realistic evaluation and fast qualification of fatigue properties of additive manufactured parts we have been facing to.H.Y. Wan G.F. Chen C.P. Li X.B. Qi G.P. Zhang 2019Journal of Materials Science & Technology2019,35,6:1
17Adding pegylated interferon to entecavir for hepatitis B e antigen–positive chronic hepatitis B: A multicenter randomized trial (ARES study)显示文摘Willem Pieter Brouwer Qing Xie Milan J. Sonneveld Ningping Zhang Qin Zhang Fehmi Tabak Adrian Streinu‐Cercel Ji‐Yao Wang Ramazan Idilman Hendrik W. Reesink Mircea Diculescu Krzysztof Simon Mihai Voiculescu Meral Akdogan Wlodzimierz Mazur Jurrien G.P. Reij 2015Hepatology2015,,:1
18Genotypic and spike positional difference in grain phytase activity, phytate, inorganic phosphorus, iron, and zinc contents in wheat ( Triticum aestivum L.)显示文摘Z.H. Liu H.Y. Wang X.E. Wang G.P. Zhang P.D. Chen D.J. Liu 2006Journal of Cereal Science2006,,2:1
19On interface strengthening ability in metallic multilayers显示文摘Y.P. Li G.P. Zhang W. Wang J. Tan S.J. Zhu 2007Scripta Materialia2007,,2:1
20多年冻土区基于水力冲填的工业和民用建筑:问题与前景(英文)显示文摘从施工角度描述了冻土区水力冲填的经验,分析了施工方法选择的主要方面(包括多年冻土施工方法-原理一和冻土活动的施工方法-原理二)。水力冲填厚度的变化对建成区冻土环境的影响已经呈现。基础工程的功能已被广泛认可。提出了全面的水文地质监测,以检测地基的土热和机械状态,对雅库茨克新发展区域的冻土产生了广泛而深远的影响。Shesternev D.M. Zhang R.V. Kuzmin G.P. Shepelev V.V. Pavlova N.A. Popenko F.E. 2014黑龙江大学工程学报2014,5,3:0
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