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| 1 | Microstructure and mechanical properties of forged Al-7.1Zn-1.1Mg-1.6Cu-0.14Zr alloy after two-step ageing treatment at 120 and 170℃显示文摘The tensile properties,electrical conductivity,and microstructure of the forged Al-7.1Zn-1.1Mg-1.6Cu-0.14Zr alloy were investigated after a two-step ageing treatment at 120 and 170℃.The results indicate that the strength of the alloy reaches the peak value at 170℃ for 1 h during the second step ageing and then decreases sharply.However,the electrical conductivity value increases continuously with the second ageing time increasing.The fracture mechanism of the alloy is intergranular fracture for 1 h and then changes to dimple transgranular fracture later,and the toughness of the alloy is improved significantly.The phases of η' and η are major precipitates in the alloy under the two-step ageing condition.Discontinuous grain boundary precipitates and precipitate-free zones along the grain boundary are clearly observed. | WANG Shaohua ZHANG Xingguo YANG Shoujie FANG Canfeng HAO Hai DAI Shenglong | 2010 | Rare Metals2010，29，4： | 12 |
| 2 | Reliability analysis of marine risers with narrow and long corrosion defects under combined loads显示文摘A marine riser, one of the most important components of offshore oil/gas transportation, needs to be designed to eliminate the risks caused by complex ocean environments, platform displacement and internal corrosion, etc. In this study, a new analytical-numerical assessment approach is proposed in order to quantitatively investigate the reliability of internally corroded risers under combined loads including axial tension and internal pressure. First, an analytical solution of the limit state function of intact risers under combined loads is obtained, which is further modified by the non-dimensional corrosion depth(d/ t) for the risers with a narrow and long corrosion defect. The relationship between d/t and limited internal pressure is obtained by finite element analysis and nonlinear regression. Through an advanced first-order reliability method(HL-RF) algorithm, reliability analysis is performed to obtain the failure probability, the reliability index and the sensitivity. These results are further verified by Monte-Carlo importance sampling. The proposed approach of reliability analysis provides an accurate and effective way to estimate the reliability of marine risers with narrow and long corrosion defects under combined loads. | Hu Xianwei Zhou Canfeng Duan Menglan An Chen | 2014 | Petroleum Science2014，11，1： | 10 |
| 3 | Effects of High Magnetic Field on Solidification and Corrosion Behaviors of Magnesium Alloy显示文摘在一个高磁场下面的 AZ61 镁合金的团结行为被学习。AZ61 合金的腐蚀性质被测量电气化学的极化在 3.5 mol/L NaCl 的一个答案调查。结果证明高磁场能精制微观结构和利益铝转移。alpha-Mg 的水晶与他们的 c 轴平行被导致到东方到磁场。腐蚀研究显示镁的不同水晶飞机有不同腐蚀性质。使钝化的电影在上一 -- 并且 b 飞机比在 c-plane.Aligned 上,结构影响 AZ61 的腐蚀性质有更高的腐蚀抵抗镁合金。 | Canfeng FANG Xingguo ZHANG Hai HAO Shouhua JI Junze JIN | 2007 | Journal of Materials Science & Technology2007，23，6： | 5 |
| 4 | Seam Tracking Technology for Hyperbaric Underwater Welding显示文摘Automatic weld seam tracking technology to be used in hyperbaric underwater damaged pipeline repair welding is much more important, because of poor bevel preparation and severe working condition. A weld seam tracking system based on digital signal processing(DSP) passive light weld image processing technology has been established. A convenient charge coupled device(CCD) camera system was used in the high pressure environment with the help of an aperture and focus altering mechanism to guarantee overall image visibility in the scope of pressure below 0.7 MPa. The system can be used in the hyperbaric environment to pick up the real welding image of both the welding arc and the welding pool. The newly developed DSP technology was adopted to achieve the goal of system real time characteristics. An effective weld groove edge recognition technique including narrow interesting window opening, middle value wave filtering, Sobel operator weld edge detecting and edge searching in a defined narrow area was proposed to remove the guide error and system accuracy was ensured. The results of tracking simulation and real tracking application with arc striking have proved the validity and the accuracy of the mentioned system and the image processing method. | JIAO Xiangdong YANG Yongyong ZHOU Canfeng | 2009 | Chinese Journal of Mechanical Engineering2009，22，2： | 4 |
| 5 | Effects of trace Zr on the microstructure and properties of 2E12 alloy显示文摘Al-4.0Cu-1.4Mg-0.6Mn (2E12) and Al-4.0Cu-1.4Mg-0.6Mn-0.3Zr aluminum billets were manufactured by soft-contact electromagnetic continuous casting (EMC). Subsequent forging and heat treatment were conducted and the effects of Zr on the microstructure and properties of the Al-4.0Cu-1.4Mg-0.6Mn alloy were studied. The results show that the addition of 0.3% Zr can reduce the dendrite and refine grains. During forging and solution treatment, fine and dispersive Al3Zr particles precipitated from the supersaturated α (Al) solid solution in the heating process of the billet can effectively pin dislocations and subgrain boundaries. Because of the addition of Zr, the mechanical properties are improved with the tensile strength, yield strength, elongation, and contraction of the area increasing by 5.4%, 11.3%, 9.7%, and 12.6%, respectively. Moreover, under the condition of R = 0.1, the fatigue crack growth rate (da/dN) of the Al-4.0Cu-1.4Mg-0.6Mn-0.3Zr alloy is lower than that of the Al-4.0Cu-1.4Mg-0.6Mn alloy. | WANG Jianzhao FANG Canfeng HAO Hai WANG Shaohua YANG Shoujie DAI Shenglong ZHANG Xingguo | 2009 | Rare Metals2009，28，5： | 2 |
| 6 | Synthesis and Characterization of Thermooxidatively Stable Poly(Dimethylsilyleneethynylenephenyleneethynylene) with o -Carborane Units显示文摘 | Wang Canfeng Zhou Yan Huang Farong | 2011 | Reac Funct Polym2011，71，8： | 1 |
| 7 | A pa- rameter estimation method for FH signal based on SPWVD 显示文摘 | ZHANG Hongxin CHEN Canfeng WANG Haiqing | 2011 | The Journal of China Universities of Posts and Telecom- munications2011，，18： | 1 |
| 8 | Spatiotemporal Characteristics and Future Scenario Simulation of the Trade-offs and Synergies of Mountain Ecosystem Services: A Case Study of the Dabie Mountains Area, China显示文摘Mountain ecosystems play an essential role in supporting regional sustainable development and improving local ecological environments. However, economic development in mountainous areas has long been lagging, and multiple conflicts related to resource assurance, ecological protection, and economic development have emerged. An accurate grasp of the current status and evolutionary trends of mountain ecosystems is essential to enhance the overall benefits of ecosystem services and maintain regional ecological security. Based on the In VEST(Integrated Valuation of Ecosystem Services and Trade-offs) model, this study analyzed the spatiotemporal evolution patterns and the trade-offs and synergies among ecosystem services(ES) in the Dabie Mountains Area(DMA) of eastern China. The Markov-PLUS(Patch-generating Land Use Simulation) model was used to conduct a multi-scenario simulation of the area's future development. Water yield(WY) and soil conservation(SC) had overall increasing trends during 2000-2020, carbon storage(CS)decreased overall but slowed with time, and habitat quality(HQ) increased and then decreased. The ecological protection scenario is the best scenario for improving ES in the DMA by 2030;compared to 2020, the total WY would decrease by 3.77 × 10^(8) m^(3), SC would increase by 0.65 × 10^(6) t, CS would increase by 1.33 × 10^(6) t, and HQ would increase by 0.06%. The comprehensive development scenario is the second-most effective scenario for ecological improvement, while the natural development scenario did not have a significant effect. However, as the comprehensive development scenario considers both environmental protection and economic development, which are both vital for the sustainable development of the mountainous areas, this scenario is considered the most suitable path for future development. There are trade-offs between WY, CS, and HQ, while there are synergies between SC, CS, and HQ. Spatially, the DMA's central core district is the main strong synergistic area, the marginal zone is the weak synergistic area, and trade-offs are mainly distributed in the transition zone. | FANG Lin LIU Yanxiao LI Canfeng CAI Jun | 2023 | Chinese Geographical Science2023，33，1： | 1 |
| 9 | Effect of Hot Extrusion on Microstructures and Properties of TiB 2 Effect of Hot Extrusion on Microstructures and Properties of TiB 2 /AZ31 Magnesium Based Composites/AZ31 Magnesium Based Composites显示文摘 | Qi Guohong Fang Canfeng Bai Yun Hao Hai Zhang Xingguo | 2011 | Rare Metal Materials and Engineering2011，，8： | 1 |
| 10 | Effects of chronic dexamethasone administration on hyperglycemia and insulin release in goats显示文摘Background: Dexamethasone(Dex), a synthetic glucocorticoid, is among the most commonly used drugs worldwide in animals and humans as an anti-inflammatory and immunosuppressive agent. GC has profound effects on plasma glucose level and other metabolic conditions. However, the effect of prolonged use of Dex on glucose metabolism in ruminants is still unclear.Results: Ten goats were randomly assigned to two groups: the control goats were injected with saline, and the Dex-treated goats were intramuscularly injected daily for 21 d with 0.2 mg/kg Dex. The results showed that plasma glucose and insulin concentrations were significantly increased after Dex administration(P < 0.05). Additionally, the content of hepatic glycogen was also markedly increased in Dex-treated goats(P < 0.01), while the content of glycogen in dorsal longissimus was unchanged by Dex(P > 0.05). The expression of several key genes, involved in blood glucose regulation, was detected by real-time PCR in the small intestine, skeletal muscle and liver. The expression of glucose transporter type 2(GLUT2), sodium-glucose transporter 1(SGLT1) and sodium-potassium ATPase(Na-K/ATPase) in the small intestine were generally increased by Dex, and GLUT2 m RNA expression was significantly up-regulated(P < 0.05). In liver, the expression of genes involved in gluconeogenesis including glucose-6-phosphatase catalytic subunit(G6 PC), cytosolic form of phosphoenolpyruvate carboxykinase(PCK1) and pyruvate carboxylase(PC), were significantly down-regulated by Dex. However, the protein expression levels of PCK1 & PCK2 were significantly increased by Dex, suggesting a post-transcriptional regulation. In dorsal longissimus, the m RNA expression of genes associated with gluconeogenesis and the insulin signaling pathway were generally upregulated by Dex, but the m RNA expression of two markers of muscle atrophy, namely F-box protein 32(FBXO32/Atrogin1) and muscle RING-finger protein 1(Mu RF1), was not altered by Dex.Conclusions: Taken together, these results indicate that chronic administration of a low dosage of Dex induces hyperglycemia mainly through gluconeogenesis activation in the goat liver. | Liqiong Niu Qu Chen Canfeng Hua Yali Geng Liuping Cai Shiyu Tao Yingdong Ni Ruqian Zhao | 2018 | Journal of Animal Science and Biotechnology2018，9，3： | 1 |
| 11 | Negative effects of long-term feeding of high-grain diets to lactating goats on milk fat production and composition by regulating gene expression and DNA methylation in the mammary gland显示文摘Background: It is well known that feeding a high concentrate(HC) diet to lactating ruminants likely induces subacute ruminal acidosis(SARA) and leads to a decrease in milk fat production. However, the effects of feeding a HC diet for long periods on milk fatty acids composition and the mechanism behind the decline of milk fat still remains poorly understood. The aim of this study was to investigate the impact of feeding a HC diet to lactating dairy goats on milk fat yield and fatty acids composition with an emphasis on the mechanisms underlying the milk fat depression. Seventeen mid-lactating dairy goats were randomly allocated to three groups. The control treatment was fed a low-concentrate diet(35% concentrate, n = 5, LC) and there were two high-concentrate treatments(65% concentrate, HC), one fed a high concentrate diet for a long period(19 wks, n = 7, HL); one fed a high concentrate diet for a short period of time(4 wk, n = 5, HS). Milk fat production and fatty acids profiles were measured. In order to investigate the mechanisms underlying the changes in milk fat production and composition,the gene expression involved in lipid metabolism and DNA methylation in the mammary gland were also analyzed.Results: Milk production was increased by feeding the HC diet in the HS and HL groups compared with the LC diet(P < 0.01), while the percentage of milk fat was lower in the HL(P < 0.05) but not in the HS group. The total amount of saturated fatty acids(SFA) in the milk was not changed by feeding the HC diet, whereas the levels of unsaturated fatty acids(UFA) and monounsaturated fatty acids(MUFA) were markedly decreased in the HL group compared with the LC group(P < 0.05). Among these fatty acids, the concentrations of C15:0(P < 0.01), C17:0(P < 0.01), C17:1(P < 0.01), C18:1 n-9 c(P < 0.05), C18:3 n-3 r(P < 0.01) and C20:0(P < 0.01) were markedly lower in the HL group, and the concentrations of C20:0(P < 0.05) and C18:3 n-3 r(P < 0.01) were lower in the HS group compared with the LC group. However, the concentrations of C18:2 n-6 c(P < 0.05) and C20:4 n-6(P < 0.05) in the milk fat were higher in the HS group. Real-time PCR results showed that the m RNA expression of the genes involved in milk fat production in the mammary gland was generally decreased in the HL and HS groups compared with the LC group. Among these genes, ACSL1, ACSS1 & 2, ACACA, FAS, SCD, FADS2, and SREBP1 were downregulated in the mammary gland of the HL group(P < 0.05), and the expressions of ACSS2, ACACA, and FADS2 m RNA were markedly decreased in the HS goats compared with the LC group(P < 0.05). In contrast to the gene expression, the level of DNA methylation in the promoter regions of the ACACA and SCD genes was increased in the HL group compared with the LC group(P < 0.05). The levels of ACSL1 protein expression and FAS enzyme activity were also decreased in the mammary gland of the HL compared with the LC group(P < 0.05).Conclusions: Long-term feeding of a HC diet to lactating goats induced milk fat depression and FAs profile shift with lower MUFAs but higher SFAs. A general down-regulation of the gene expression involved in the milk fat production and a higher DNA methylation in the mammary gland may contribute to the decrease in milk fat production in goats fed a HC diet for long time periods. | Ping Tian Yanwen Luo Xian Li Jing Tian Shiyu Tao Canfeng Hua Yali Geng Yingdong Ni Ruqian Zhao | 2018 | Journal of Animal Science and Biotechnology2018，9，1： | 1 |
| 12 | Hydraulic drive test platform ofautomatie underwater welding显示文摘 | Jialei Zhu Xiangdong Jiao Canfeng Zhou | 2011 | Engineering2011，，15： | 1 |
| 13 | Hydraulic drive test platform of automatic underwater welding 显示文摘 | Zhu Jialei Jiao Xiangdong Zhou Canfeng | 2011 | Engineering2011，，15： | 1 |
| 14 | Face recognition using holistic Fourier invariant features 显示文摘 | LAI J H PONG C Yuen GUO Canfeng | 2001 | Pattern Recognition2001，34，1： | 1 |
| 15 | Preparation and properties of aluminum phosphate/organosilicon resin organic-inorganic hybrid materials and fiber reinforced composites显示文摘 | Deng Shifeng Wang Canfeng Zhou Yan | 2008 | Mater SCi Eng A2008，447，： | 1 |
| 16 | mWSN for Large Scale Mobile Sensing 显示文摘 | MA Jian CHEN Canfeng SALOMAA J | 2007 | Journal of Signal Processing Sys- tems2007，12，51： | 1 |
| 17 | Effects of Spiral Magnetic Field on Structures Transformation and Macrosegregation of Sn-Pb Alloy显示文摘The effect of spiral magnetic field (SMF) on the solidification process of Sn-20 wt.%Pb hypoeutectic alloy was studied in this work. The temperature distribution and the macrosegregation together with the eutectic lamellar spacing during solidification were measured under different magnetic fields. The results indicate that the compositions in the top and bottom portions of the sample are nearly the same and the segregation phenomenon is basically eliminated by SMF at an exciting current of 125 A. The morphology of the primary phase transforms from coarse dendrite to rosette or ellipsoidal equiaxed crystal and the spacing of the eutectic lamellar increases from 1.6 to 3.9 μm when the exciting current increases from 0 to 125 A. Moreover, if the exciting current is high enough, the forced fluid flow caused by SMF will enhance the process of transition from lamellar eutectic structure to anomalous rod-like one. | Xingguo ZHANG Qian ZHAO Jianshe GUO Qingyuan XING Liang DENG Xiaoguang HOU Canfeng FANG | 2013 | Acta Metallurgica Sinica(English Letters)2013，26，3： | 1 |
| 18 | Preparation and properties of aluminum phosphate / organosilicon resin organic- inorganic hybrid materials and fiber reinforced composites显示文摘 | Deng Shifeng Wang Canfeng Zhou Yan | 2008 | Materials Science and Engineering A2008，447，： | 1 |
| 19 | Simulation Study of Cluster Based Data Dissemination for Wireless Sensor Networks with Mobile Sinks显示文摘 | Chen Canfeng Ma Jian Salomaa | 2008 | IEEE2008，1，1720： | 1 |
| 20 | One-step synthesis of carbon-coated monocrystal molybdenum oxides nanocomposite as high-capacity anode materials for lithiumion batteries显示文摘Benefitting from higher specific capacities,acceptable cost,nontoxicity and unique crystal structures,the molybdenum oxides have been studied as the anode materials for lithium ion batteries(LIBs).Herein,a direct current(DC)arc-discharge plasma technique has been developed to in-situ synthesize carboncoated monocrystal molybdenum oxides((MoO3NRs/MoO2NPs)@C)nanocomposites,using coarse MoO_(3) bulk as the raw material and methane(CH4)gas as the carbon source.It is indicated that crystallographic traits of MoO_(3) and MoO2 nuclei give rise to an anisotropic growth of monocrystal MoO3 nanorods(NRs)along<100>direction and an isotropic growth of monocrystal MoO_(2) nanoparticles(NPs).The carbon shells on MoO3/MoO2 nanostructures are generated from the absorption of carbon atoms in surrounding atmosphere or the release of supersaturated carbon atoms in MoeOeC solid solution.Unique constitution and pseudo-capacitive behavior of(MoO3NRs/MoO2NPs)@C bring merits to excellent cycling performance and rate capability,i.e.a remarkable specific capacity of 840 mAh·g^(-1) after 100 cycles at a current density of 0.1 Ag^(-1) and a retained capacity of 210 mAh·g^(-1) at 6.4 A g^(-1).This work has offered a simple and efficient approach to fabricate the carbon-coated molybdenum oxides nanostructures for promising anode materials of LIBs。 | Zhiguo Rong Canfeng Fang Zhongyuan Zhang Wenfang Miao Xiyang Li Jingshuang Liang Wenfei Yang Yinong Wang Xiane Guo Youngguan Jung Xinglong Dong | 2021 | Journal of Materiomics2021，7，3： | 1 |
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