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Analysis of Mechanical Characteristics of Fly Ash Cenospheres Reinforced Epoxy Composites

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Journal of Wuhan University of Technology(Materials Science) 2018年第1期33卷 139-145页

作者：陈平 li jianchao ZHANG Lei School of Mechanical Engineering University of Science and Technology Beijing Department of Mechanical Engineering University of Alaska Fairbanks

Fly ash cenospheres（FACs） as a recycling material of industrial waste has become a competitor for other inorganic particle fillers. Epoxy resin（EP） composites reinforced with different content of FACs as well as different size grading ratio were prepared. The surface modification of FACs particles was conducted before incorporating into EP matrix. The impact and flexural strengths and the flexural modulus were investigated, and the fracture surfaces of the testing samples were analyzed using SEM. Results showed that FACs had an obvious effect on the mechanical characteristics of the FACs/EP composites. With increasing weight fraction of FACs, the impact and flexural strengths and the flexural modulus of EP composite samples increased, and reached the highest values when the weight fraction of FACs reached 15 wt%. The mechanical characteristics of the FACs/EP composites however deteriorated with further increasing of FACs content. For the EP composites reinforced with different size grading ratio of FACs, the larger proportion of small FACs particles, the better mechanical properties of the EP composites. The results were analyzed from the aspect of the plastic deformation, new surface formation and fracture absorption energy. The synergistic effect of the size grading ratio of FACs was not obvious, which would be further investigated.

关键词： fly ash cenospheres epoxy resin mechanical characteristics surface modification

RISK ANALYSIS OF JACKET PLATFORMS DURING INSTALLATION ON SEA

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China Ocean Engineering 1990年第2期5卷 199-207页

作者： li, jianchao Hu, Ruihua China Jilin Int Engineering Designing Inst Changchun China

In this paper, the uncertainty of environmental loads and soil resistance is analyzed, and the wave and current loads acting on a jacket during the unpiled installation phase are converted to its foundation loads. With a probability model of soil resistance, risk applied to the design of temporary seafloor support of a platform and the risk of failure, or probability of horizontal sliding, tilting and ovrturning can be pridicted. Thereby, optimum design and installation procedure may be chosen according to safety and economical factors. A Fortran program based on the model is developed. The application of the program to a jacket in South China Sea is described.

关键词： Economics Foundations Soil Structure Interaction Probability

High-content graphene nanoplatelet reinforced aluminum composites produced by ball milling and hot extrusion

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Science China(Technological Sciences) 2020年第8期63卷 1426-1435页

作者： ZHENG Zhong ZHANG XueXi li jianchao GENG lin School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China

Due to the high specific surface area of graphene,the effective incorporation of high-content graphene in metals is ***,aluminum composites with graphene nanoplatelet(GNP)content up to 5.0 vol%were prepared by spark plasma sintering(SPS)of blended powders with various ball milling regimes and subsequent hot *** effects of GNP distribution state on the properties of GNP/Al composite were investigated.5.0 vol%GNPs were uniformly dispersed in aluminum matrix by high-speed ball milling(HSBM)process,but with damage GNPs due to the too high energy *** contrast,the wellstructured and dispersed GNPs in aluminum powders were obtained via shift-speed ball milling(SSBM).The clear GNP-Al interface in extruded SSBM composite was attributed to well-structured *** a result,the yield strength(YS)and ultimate tensile strength(UTS)of composite produced by SSBM reached 279 and 303 MPa,which are 166%and 116%higher than those of monolithic *** demonstrated that it may be promising to introduce high-content GNPs with tailorable interface in Al alloys via modified ball milling technique and hot extrusion.

关键词： aluminum-matrix composites graphene nanoplatelet ball milling hot extrusion mechanical properties

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14种市售麻椒鸡的品质及风味分析

食品工业科技 2025年第1期46卷 302-316页

作者：刘聪刘欣王鹏徐幸莲王寅李建超南京农业大学肉品质量控制与新资源创制全国重点实验室江苏南京210095 江苏立华食品有限公司江苏常州213200

为明确麻椒鸡产品的品质特性及风味特征,本研究以14种不同品牌的市售麻椒鸡(以A~N字母表示)作为研究对象,测定了其色泽、质构、剪切力、电子鼻、挥发性风味物质和电子舌,并结合感官评价进一步探究感官评价指标与仪器分析指标之间的相关... 详细信息

为明确麻椒鸡产品的品质特性及风味特征,本研究以14种不同品牌的市售麻椒鸡(以A~N字母表示)作为研究对象,测定了其色泽、质构、剪切力、电子鼻、挥发性风味物质和电子舌,并结合感官评价进一步探究感官评价指标与仪器分析指标之间的相关性。结果表明:14种麻椒鸡鸡胸的硬度范围为1742.81~4587.54 g,剪切力范围为14.41~35.07 N;鸡腿的硬度范围为797.09~3389.61 g,剪切力范围为7.70~26.34 N。电子鼻评价结果显示,14种麻椒鸡的主要挥发性气味成分为氮氧化合物、无机硫化物、有机硫化物和短链烷烃。气相色谱-离子迁移谱(GCIMS)显示,麻椒鸡风味的形成是鸡肉本身带有的香气和香辛料赋予香气整体协调的结果,14种麻椒鸡中共鉴定出77种挥发性化合物,结合正交偏最小二乘判别分析(OPLS-DA)发现,丁醛、芳樟醇、α-蒎烯、丙烯酸乙酯、α-松油醇、2-庚酮、1-辛烯-3-醇等26种物质为麻椒鸡产品的特征风味物质。电子舌评价结果显示,鲜味和咸味对麻椒鸡的滋味贡献较突出。相关性分析结果表明,感官评价中的总体喜爱度与丁醛、芳樟醇、α-蒎烯、丙烯酸乙酯、α-松油醇、2-庚酮、1-辛烯-3-醇、W5S、W1W、W2W、W1S、咸味、L^(*)和b^(*)值等指标呈现极显著正相关(P<0.01)。本研究可以为麻椒鸡产品风味品质的研究与调控、原辅料的选择、麻椒鸡产品工业化水平的提升提供参考。

关键词：麻椒鸡风味特征气相色谱-离子迁移谱品质特性相关性

Ultra-high strength GNP/2024Al composite via thermomechanical treatment

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Journal of Materials Science & Technology 2022年第13期108卷 164-172页

作者： Zhong Zheng Xuexi Zhang Mingfang Qian jianchao li Muhammad Imran lin Geng School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China Mechanical Engineering Department University of Engineering&Technology TaxilaTaxila 47050Pakistan

The 5.0 vol.%GNP/2024Al composites were prepared by accumulated shear deformation combined with heat treatment,*** thermomechanical treatment(TMT).The results showed that homogeneous distributed GNPs that aligned along the plastic deformation direction were obtained by six-pass drawing in the solution heat treatment *** introducing of high-density dislocations in Al matrix by multiple drawing resulted in enhanced nucleation of precipitates and subsequent uniform growth during ***,ultra-strength GNP/2024Al composites,with yield and ultimate tensile strength 482 and571 MPa,respectively,were *** high strength was attributed to homogeneous dispersion of undamaged GNPs,fine and dispersed precipitations and work-hardening *** work demonstrated that TMT could act as a feasible strategy for preparing high-performance GNP/Al composites.

关键词： Metal-matrix composites(MMCs) Graphene nano-platelets(GNPs) Interface Ultra-strength composites Thermomechanical treatment(TMT)

Inter-Annual Variabilities of the Body Weights of Two Cephalopod Species in the Yellow Sea Under Different Environmental Conditions

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Journal of Ocean University of China 2022年第2期21卷 409-420页

作者： GUO Jianzhong ZHANG Chi li jianchao TIAN Yongjun YE Zhenjiang li Zhixin GAO Zihui Fisheries College Ocean University of ChinaQingdao 266003China Frontiers Science Center for Deep Ocean Multispheres and Earth System(FDOMES) Ocean University of ChinaQingdao 266100China Laboratory for Marine Fisheries Science and Food Production Processes Qingdao National Laboratory for Marine Science and TechnologyQingdao 266071China Key Laboratory of Mariculture Ministry of EducationOcean University of ChinaQingdao 266003China

As fish stocks have been overexploited and catches have decreased over the last few years,the cephalopod catch has increased globally to the point that they are now among the most important marine resources in the *** change and hu-man activities greatly affect the growth and abundance of *** how the individual growth of key species varies and how they respond to environmental changes is essential for an effective fishery *** beka and Amphioc-topus fangsiao are two dominant species in the cephalopod community of Yellow Sea(YS).Both of them are commercially impor-tant and have great ecological ***,we compared the body weights(BW)of these two species from 2011 to 2018 based on an analysis of biological parameters(i.e.,mantle length and BW)from trawl surveys in the *** temporal variations in the BW of the two species are ***,the BW of *** was the lowest in 2011 and the highest in 2017,and the well growth was noted in *** BW of *** was the lowest in 2013 and the highest in 2016,while well growth was ob-served in ***-effect models indicate that the BW of these species correlates significantly with the sea surface tem-perature(SST)and Southern Oscillation Index(SOI),suggesting the impact of the regional environment associated with strong ENSO events on *** a different response window,growth increases with increased SST and decreases with increased *** consistent patterns of the BW of these cephalopods in response to environmental factors demonstrate they can be employed as indi-cator species for studying environmental change in the *** results improve the understanding of the responses of cephalopods to environmental changes in the YS,as well as the mechanisms that drive their *** information is critical for the effective management and sustainable development of cephalopod fisheries in this region.

关键词： Loliolus beka Amphioctopus fangsiao body weight environmental changes Yellow Sea

Responses of Yellow Sea Cold Water Mass to Typhoon Bolaven

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Journal of Ocean University of China 2019年第1期18卷 31-42页

作者： li jianchao li Guangxue XU Jishang QIAO Lulu MA Yanyan DING Dong liU Shidong Fisheries College Ocean University of China Key Laboratory of Submarine Sciences & Prospecting Techniques MOE Ocean University of China College of Marine Geosciences Ocean University of China

A two-month seabed-mounted observation(YSG1 area) was carried out in the western Yellow Sea Cold Water Mass(YSCWM) using an RDI-300 K acoustic Doppler current profiler(ADCP) placed at a water depth of 38 m in late summer, 2012. On August 2012, Typhoon Bolaven passed east of YSG1 with a maximum wind speed of 20 m s-1. The water depth, bottom temperature, and profile current velocities(including u, v and w components) were measured, and the results showed that the typhoon could induce horizontal current with speed greater than 70 cm s-1 in the water column, which is especially rare at below 20 meters above bottom(mab). The deepening velocity shear layer had an intense shear velocity of around 10 cm s-1 m-1, which indicated the deepening of the upper mixed layer. In the upper water column(above 20 mab), westward de-tide current with velocity greater than 30 cm s-1 was generated with the typhoon's onshore surge, and the direction of current movement shifted to become southward. In the lower water column, a possible pattern of eastward compensation current and delayed typhoon-driven current was demonstrated. During the typhoon, bottom temperature variation was changed into diurnal pattern because of the combined influence of typhoon and tidal current. The passage of Bolaven greatly intensified local sediment resuspension in the bottom layer. In addition, low-density particles constituted the suspended particulate matter(SPM) around 10 mab, which may be transported from the central South Yellow Sea by the typhoon. Overall, the intensive external force of the Typhoon Bolaven did not completely destroy the local thermocline, and most re-suspended sediments during the typhoon were restricted within the YSCWM.

关键词： Yellow Sea Cold Water Mass typhoon typhoon-driven current thermocline suspended particulate matter

Synergistic engineering of cobalt selenide and biomass-derived S,N,P co-doped hierarchical porous carbon for modulation of stable li-S batteries

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Journal of Materials Science & Technology 2023年第3期134卷 11-21页

作者： Yang lin Song He Zhiyong Ouyang jianchao li Jie Zhao Yanhe Xiao Shuijin Lei Baochang Cheng Nanoscale Science and Technology Laboratory Institute for Advanced StudyNanchang UniversityNanchang 330031China School of Physics and Materials Nanchang UniversityNanchang 330031China

Hierarchical porous carbon co-doped with heterogeneous atoms has attracted much attention thanks to sizable internal void space accommodating electrolyte,high-density microporous structure physically con-fining polysulfides(LPS),and heterogeneous atoms serving as active sites to capture ***,solely relying on carbon material defects to capture LPS proves ***,metal compounds must be introduced to chemisorb ***,cobalt ions are in-situ grown on the polydopamine layer coated on the surface of biomass-derived S,N,P co-doped hierarchical porous carbon(SNP-PC).Then a layer of nitrogen-doped porous carbon(MPC)dotted with CoSe nanoparticles is acquired by ***,a strong-polar/weak-polar composite material of SNP-PC studded with CoSe nanoparticles is obtained(SNP-PC@MPC@CoSe).Button cells assembled with SNP-PC@MPC@CoSe-modified separator enable superb long-cycle stability and satisfactory rate *** excellent rate capacity of 796 mAh g^(−1)at a high current rate of 4 C with an ultra-low capacity fading of 0.06%over 700 cycles can be *** impressively,even in a harsh test condition of 5.65 mg cm^(−2)sulfur loading and 4μL mg^(−1)ratio of electrolyte to active materials,the battery can still display a specific capacity of 980 mAh g^(−1)(area capacity of∼5.54 mAh cm^(−2))at 0.1 *** work provides a promising route toward high-performance li-S batteries.

关键词： lithium-sulfur battery Biomass conversion S,N,P-codoped porous carbon CoSe modulation Multifunctional separator Synergism of strong and weak polarity

Early life history affects fish size mainly by indirectly regulating the growth during each stage:a case study in a demersal fish

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Marine life Science & Technology 2023年第1期5卷 75-84页

作者： Rui Wu Qinghuan Zhu Satoshi Katayama Yongjun Tian jianchao li Kunihiro Fujiwara Yoji Narimatsu Frontiers Science Center for Deep Ocean Multispheres and Earth System(FDOMES)and Key Laboratory of Mariculture Ministry of EducationOcean University of China5 Yushan RoadQingdao266003China Graduate School of Agricultural Science Tohoku University1-1 Tsutsumidori AmamiyamachiAobaSendai981-8555Japan Laboratory for Marine Fisheries Science and Food Production Processes Pilot National Laboratory for Marine Science and TechnologyQingdao266237China Niigata Field Station Fisheries Resources InstituteJapan Fisheries Research and Education AgencyYokohama220-6115Japan Hachinohe Field Station Fisheries Resources InstituteJapan Fisheries Research and Education AgencyYokohama220-6115Japan

The complex life histories of demersal fishes are artificially separated into multiple stages along with changes in morphology and *** is worth exploring whether the phenotypes expressed earlier and later during the life cycle are related or *** life stages of first year Pacific cod(Gadus macrocephalus)were tracked over different hatch years and regions to test whether the early life history had a long-lasting effect on subsequent *** further explored the contribution of growth in the early and subsequent life history stages to body size at the end of each *** addition to the accessory growth centre and the first annual ring,the other two checks on the otolith possibly related to settlement and entering deeper waters were identified in 75 Pacific cod *** direct and indirect relationships among the life history stages was interpreted based on path *** results showed that growth prior to the formation of the accessory growth centre had a significant effect on the absolute growth of the fish before and after settlement and migration to deep ***,there was no or moderate evidence that early growth affected the body size at each stage,which was mainly regulated by growth during the *** study supports the lasting effect of early growth and clarifies that it affects size mainly by indirectly regulating staged *** the phenotype relationships and identifying the internal mechanisms form the basis for assessing population dynamics and understanding the processes behind the changes.

关键词： Early life history Gadus macrocephalus Otolith Path analysis Staged growth Body size