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| 1 | Bone biomaterials and interactions with stem cells显示文摘Bone biomaterials play a vital role in bone repair by providing the necessary substrate for cell adhesion,proliferation, and differentiation and by modulating cell activity and function. In past decades, extensive efforts have been devoted to developing bone biomaterials with a focus on the following issues:(1)developing ideal biomaterials with a combination of suitable biological and mechanical properties;(2)constructing a cell microenvironment with pores ranging in size from nanoscale to submicro-and microscale;and(3) inducing the oriented differentiation of stem cells for artificial-to-biological transformation. Here we present a comprehensive review of the state of the art of bone biomaterials and their interactions with stem cells. Typical bone biomaterials that have been developed, including bioactive ceramics, biodegradable polymers, and biodegradable metals, are reviewed, with an emphasis on their characteristics and applications. The necessary porous structure of bone biomaterials for the cell microenvironment is discussed,along with the corresponding fabrication methods. Additionally, the promising seed stem cells for bone repair are summarized, and their interaction mechanisms with bone biomaterials are discussed in detail.Special attention has been paid to the signaling pathways involved in the focal adhesion and osteogenic differentiation of stem cells on bone biomaterials. Finally, achievements regarding bone biomaterials are summarized, and future research directions are proposed. | Chengde Gao Shuping Peng Pei Feng Cijun Shuai | 2017 | Bone Research2017，5，4： | 17 |
| 2 | Microstructure, biodegradation, antibacterial and mechanical properties of ZK60-Cu alloys prepared by selective laser melting technique显示文摘Magnesium(Mg) alloys are receiving increasing attention for body implants owing to their good biocompatibility and biodegradability. However, they often suffer from bacterial infections on account of their insufficient antibacterial ability. In this study, ZK60-x Cu(x = 0, 0.2, 0.4, 0.6 and 0.8 wt%) alloys were prepared by selective laser melting(SLM) with alloying copper(Cu) to enhance their antibacterial ability.Results showed that ZK60-Cu alloys exhibited strong antibacterial ability due to combination of release of Cu ions and alkaline environment which could kill bacteria by destroying cellular membrane structure,denaturing enzymes and inhibiting deoxyribonucleic acid(DNA) replication. In addition, their compressive strength increased due to grain refinement and uniformly dispersing of short-bar shaped MgZnCu phases. Moreover, ZK60-Cu alloys also exhibited good cytocompatibility. In summary, ZK60-Cu alloys with antibacterial ability may be promising implants for biomedical applications. | Cijun Shuai Long Liu Mingchun Zhao Pei Feng Youwen Yang Wang Guo Chengde Gao Fulai Yuan | 2018 | Journal of Materials Science & Technology2018，34，10： | 12 |
| 3 | Distribution and transportation of mercury from glacier to lake in the Qiangyong Glacier Basin, southern Tibetan Plateau, China显示文摘The Tibetan Plateau is home to the largest aggregate of glaciers outside the Polar Regions and is a source of fresh water to 1.4 billion people. Yet little is known about the transportation and cycling of Hg in high-elevation glacier basins on Tibetan Plateau. In this study, surface snow,glacier melting stream water and lake water samples were collected from the Qiangyong Glacier Basin. The spatiotemporal distribution and transportation of Hg from glacier to lake were investigated. Significant diurnal variations of dissolved Hg(DHg) concentrations were observed in the river water, with low concentrations in the morning(8:00 am–14:00 pm) and high concentrations in the afternoon(16:00 pm–20:00 pm). The DHg concentrations were exponentially correlated with runoff, which indicated that runoff was the dominant factor affecting DHg concentrations in the river water. Moreover, significant decreases of Hg were observed during transportation from glacier to lake. DHg adsorption onto particulates followed by the sedimentation of particulate-bound Hg(PHg) could be possible as an important Hg removal mechanism during the transportation process. Significant decreases in Hg concentrations were observed downstream of Xiao Qiangyong Lake, which indicated that the high-elevation lake system could significantly affect the distribution and transportation of Hg in the Qiangyong Glacier Basin. | Shiwei Sun | 2016 | Journal of Environmental Sciences2016，28，6： | 10 |
| 4 | Jiang Tang Fang Long Jiao Nang in Treating Non-Insulin Dependent Diabetes Mellitus with Hearing Loss显示文摘Objective To study the efficacy and safety of the Jiang Tang Fang Long Jiao Nang (Hypoglycemic Anti-Deafness Capsule) in treating non-insulin dependent diabetes mellitus with hearing loss. Methods Two hundred ninety six patients with non-insulin dependent diabetes mellitus and hearing loss were randomly assigned to a treatment group(n=164, 208 ears) and a control group(n=132, 184 ears). Patients in the treatment group were treated with the Jiang Tang Fang Long Jiao Nang and supplement herbal preparations as indicated by traditional Chinese medicine dialectical assessment, while control patients received glibenclamide and conventional treatments for deafness. Hearing, fasting blood glucose(FBG), post-prandial blood glucose(PBG), 24 hour urine sugar, platelet function indices, blood superoxide dismutase(SOD) and lipid peroxides(LPO) levels, and symptom improvement were compared between the two groups. Results The rate of hearing improvement was 56.7% for the treatment group and 26.6% for the control. FBG, PBG and 24 hour urine sugar improved in both groups, but the last two were superior in the treatment group compared to the control. Symptoms improvement was also superior in the treatment group compared to the control. In patients receiving Jiang Tang Fang Long Jiao Nang treatment, platelet function indices, SOD and LPO were all improved, while only LOP improvement was noticed in control patients. No acute or long-term toxicity was demonstrated for the Jiang Tang Fang Long Jiao Nang in animal tests. The Jiang Tang Fang Long Jiao Nang lowered blood glucose and serum triglycerides in a rat model of alloxan-induced diabetes. Conclusion The Jiang Tang Fang Long Jiao Nang is effective in improving hearing and diabetic indices in diabetic patients with deafness, without significant side effects. | LI Rui-yu1, LI Meng2, WANG Rui3, LI Bin4, GUO Ya-jing5 1 Xingtai Medical College, Hebei, Xingtai, 054000 2 Chengde Medical college Hebei, Chengde, 067000 3 College of Traditional Chinese Medicine, Hebei Medical University, Shijiazhuang, 050091 4 Department of Biochemistry, Hebei Medicine University 050017 5 Guangzong Hospital of TCM, Hebei, 054600 | 2008 | Journal of Otology2008，3，1： | 7 |
| 5 | ^(14)C measurement of forest soils in Dinghushan Biosphere Reserve显示文摘Organic carbon in forest soils of Qingyunsi and Wukesong profiles can be divided into fast and slow components. Δ14C values of these profiles decrease with increasing of depth. The Δ14C values in 30—40 cm depth interval of Wukesong profile are decreasing sharply until a very low value,showing that a strong geological environment change occurred about 1 560 years ago. The 14C apparent ages of Wukesong profile show that the coniferous and broad-leaf mixed forests around Wukesong profile have been developing since 425 a BP, which is consistent with historical documents. The penetrating depths of 'bomb 14C' in Qingyunsi and Wukesong profiles are 10 and 20 cm, respectively. | SHEN Chengde , LIU Dongsheng (LIU Tungsheng) , PENG Shaolin, SUN Yanmin , JIANG Mantao , Yl Weixi , XING Changping , GAO Quanzhou , LI Zhi’an and ZHOU Guoyi Guangzhou Institute of Geochemisry, Chinese Academy of Sciences, Guangzhou 510640, China Institute of Geology, Chinese Academy of Sciences , Beijing 100029, China South China Institute of Botany, Chinese Academy of Sciences, Guangzhou 510650, China | 1999 | Chinese Science Bulletin1999，44，3： | 7 |
| 6 | Vegetation evolution on the central Chinese Loess Plateau since late Quaternary evidenced by elemental carbon isotopic composition显示文摘There are many controversial issues in loess studies such as natural vegetation types on the Chinese Loess Plateau during the historical periods and the spatial and temporal evolution of C3/C4 plants. Elemental carbon isotopic composition (δ13Cec) in the loess section may offer new evidence for these problems. Elemental carbon (EC) is produced by incomplete combustion of vegetation, and its carbon isotopic composition has a very small difference from that of the formal vegetation, then δ13Cec can be used as a record to recover the changes of vegetation. Elemental carbon was extracted by applying the oxidation method from the loess-paleosol sequence in the central Chinese Loess Plateau, and its carbon isotope composition was analyzed by the isotope mass spectrometer. The results showed that the vegetation in this region was a mixed type of C3 and C4 plants, dominated with C3 plants in most of the time. Since late Quaternary, C3/C4 plants may not follow a simple glacial-interglacial cycle mode on the Chinese Loess Plateau, but showing fluctuations. C3 plants increased gradually in L4 period, and more C3 plants occurred during S3 period, and C4 plants increased again during L3―L2 periods, after that, C3 plants dominated again during S1―S0 periods. During periods of paleosol development, C3 plants were abundant in S3 and S1, and there were more C4 plants in S2 and S0. During periods of loess sedimen- tation, there were more C3 plants in L4 and L1, and there were more C4 plants in L3 and L2. On the or- bital timescale, the vegetation variations revealed by δ13Cec record are consistent with the results of pollen data and also similar to the results obtained by organic carbon isotopic composition since the last glacial period. | ZHOU Bin SHEN ChengDe ZHENG HongBo ZHAO MeiXun SUN YanMin | 2009 | Chinese Science Bulletin2009，54，12： | 6 |
| 7 | The elemental carbon record in Weinan loess section since the last 21 ka显示文摘We studied the records of elemental carbon (EC) of the last 21 ka in the Weinan loess section, Shanxi Province. The variations of EC abundance and δ13CEC value along with depth (or age) were presented. There are four large peaks of EC abundance around the following years: 20.16 ka, 17.76 ka, 11.97 ka and 4.49 ka. Climatic situation was changed rapidly during these periods. The peaks around 11.97 ka and 20.16 ka are particularly sharp, occurring over intervals of tens to hundreds of years, which could represent short-duration intense events. δ13CEc values in the upper 4 m of the Weinan loess section vary between -11.71‰ and -21.34‰, which suggests that the vegetation pattern of the last 21 ka on the Loess Plateau is G4-dominated grasses. | YANG Ying SHEN Chengde YI Weixi SUN Yanmin LIU Dongsheng | 2001 | Chinese Science Bulletin2001，46，18： | 5 |
| 8 | ^(10)Be/~7Be implies the contribution of stratosphere-troposphere transport to the winter-spring surface O_3 variation observed on the Tibetan Plateau显示文摘10Be/7Be is a stratospheric sensitive tracer.In this paper,measurements of 10Be/7Be and surface O3 from October 2005 to May 2006 at Mt.Waliguan (hereafter WLG,100.898°E,39.287°N,3810 m,a.s.l.),China global atmospheric watch (GAW) observatory,are introduced and used to investigate the stratosphere-troposphere transport (STT) and its impact on surface O3 on the Tibetan Plateau.The results show that the magnitude of STT is weak in winter,followed by strengthening from the end of winter to the middle of spring (from mid February to mid April) with large increases in 10Be,7Be,10Be/7Be and surface O3.At the end of spring (from the end of April to mid May in this paper),the STT weakened,and the continuous increase of surface O3 at WLG is produced by tropospheric photochemistry reactions. | ZHENG XiangDong SHEN ChengDe WAN GuoJiang LIU KeXin TANG Jie XU XiaoBin | 2011 | Chinese Science Bulletin2011，56，1： | 5 |
| 9 | Influence of graphene oxide(GO)on microstructure and biodegradation of ZK30-xGO composites prepared by selective laser melting显示文摘Different graphene oxide(GO)contents were chosen as the addition to prepare ZK30-xGO composites by selective laser melting(SLM).The microstructure and biodegradation of the SLMed ZK30-xGO composites were investigated.The results indicated that(i)SLM effectively produced a small grain size,(ii)the incorporation of GO into ZK30 caused a further decrease in grain size,and(iii)GO has a strong effect on the formation of the MgZn2 precipitates.The SLMed ZK30-0.6GO had the lowest biodegradation rate,which is attributed to the fact that the effect of the increased grain refinement and decreased amount of the MgZn?precipitates counteracted the effect of the increased GO content on the biodegradation rate.Furthermore,the SLMed ZK30-xGO composites had good cytocompatibility.This work provided a novel approach to the composition design and fabrication of novel biodegradable GO reinforced Mg-based biomedical implants. | Jun-Xi Tao Ming-Chun Zhao Ying-Chao Zhao Deng-Feng Yin Long Liu Chengde Gao Cijun Shuai Andrej Atrens | 2020 | Journal of Magnesium and Alloys2020，8，3： | 4 |
| 10 | Carbon isotopic composition and its implications on paleoclimate of the underground ancient forest ecosystem in Sihui,Guangdong显示文摘We present the carbon isotopic composition of the total organic carbon(TOC) and fine roots in the sedimentary profile from the underground ancient forest in Sihui to study the climatic and environmental changes from 4.5 ka BP to 0.6 ka BP.Results show that C3 plant was the main vegetation from 4.5 ka BP to 0.6 ka BP in this region.The ancient forest began to develop in the wetland at around 4 ka BP and disappeared together with the wetland at about 3.0 ka BP,implying that the climate had changed greatly at around 3.0 ka BP.As indicated by the simulation results,the content of atmospheric CO2 increased slightly during 3.5 ka BP and 3.0 ka BP,implying climate warming during that period.The interval of radiocarbon age between 3.0 ka BP and 1.2 ka BP was possibly caused by the strong erosion when the block was lifted in the neotectonic movement.From 1.2 ka BP to 0.6 ka BP,the region remained in terrestrial sedimentary environment,and the surface plant biomass declined gradually.Drought caused by the climate change was the likely cause for the disappearance of the ancient forest.South transition of Intertropical Convergence Zone(ITCZ) was probably the main mechanism for the climate change. | Ping Ding ChengDe Shen Ning Wang WeiXi Yi KeXin Liu XingFang Ding DongPo Fu | 2009 | Science China Earth Sciences2009，52，5： | 4 |
| 11 | Numerical studies of static aeroelastic effects on grid fin aerodynamic performances显示文摘The grid fin is an unconventional control surface used on missiles and rockets. Although aerodynamics of grid fin has been studied by many researchers, few considers the aeroelastic effects.In this paper, the static aeroelastic simulations are performed by the coupled viscous computational fluid dynamics with structural flexibility method in transonic and supersonic regimes. The developed coupling strategy including fluid–structure interpolation and volume mesh motion schemes is based on radial basis functions. Results are presented for a vertical and a horizontal grid fin mounted on a body. Horizontal fin results show that the deformed fin is swept backward and the axial force is increased. The deformations also induce the movement of center of pressure, causing the reduction and reversal in hinge moment for the transonic flow and the supersonic flow,respectively. For the vertical fin, the local effective incidences are increased due to the deformations so that the deformed normal force is greater than the original one. At high angles of attack, both the deformed and original normal forces experience a sudden reduction due to the interference of leeward separated vortices on the fin. Additionally, the increment in axial force is shown to correlate strongly with the increment in the square of normal force. | Chengde HUANG Wen LIU Guowei YANG | 2017 | Chinese Journal of Aeronautics2017，30，4： | 4 |
| 12 | Carbon isotopic composition,turnover and origins of soil CO_2 in a monsoon evergreen broadleaf forest in the Dinghushan Biosphere Reservoir,South China显示文摘Carbon isotopic compositions of soil CO2 in rainy season (July) from two natural soil profiles (DHLS & DHS) in the monsoon evergreen broadleaf forest in the Dinghushan Biosphere Reservoir (DBR),South China,are presented.Turnover and origins of soil CO2 are preliminarily discussed in this paper.Results show that the content of soil CO2 varies between 6120 and 18718 ppmv,and increases with increasing depth until 75 cm,and then it declines.In DHLS,soil CO2 δ 13C ranges from -24.71‰ to -24.03‰,showing a significant inverse correlation (R2=0.91) with the soil CO2 content in the same layer.According to a model related to soil CO2 δ 13C,the soil CO2 is mainly derived from the root respiration (>80%) in DHLS.While in DHS,where soil CO2 δ 13C ranges from -25.19‰ to -22.82‰,soil CO2 is primarily originated from the decomposition of organic matter (51%–94%),excluding the surface layer (20 cm,90%).Radiocarbon data suggest that the carbon in soil CO2 is modern carbon in both DHLS and DHS.Differences in 14C ages between the 'oldest' and 'youngest' soil CO2 in DHLS and DHS are 8 months and 14 months,respectively,indicating that soil CO2 in DHLS has a faster turnover rate than that in DHS.The Δ14C values of soil CO2,which range between 100.0‰ and 107.2‰ and between 102.5‰ and 112.1‰ in DHLS and DHS,respectively,are obviously higher than those of current atmospheric CO2 and SOC in the same layer,suggesting that soil CO2 is likely an important reservoir for Bomb-14C in the atmosphere. | DING Ping SHEN ChengDe WANG Ning YI WeiXi DING XingFang FU DongPo LIU KeXin ZHAO Ping | 2010 | Chinese Science Bulletin2010，55，23： | 4 |
| 13 | Nano-SiC reinforced Zn biocomposites prepared via laser melting:Microstructure,mechanical properties and biodegradability显示文摘Zn has been regarded as new kind of potential implant biomaterials due to the desirable biodegradability and good biocompatibility,but the low strength and ductility limit its application in bone repairs.In the present study,nano-SiC was incorporated into Zn matrix via laser melting,aiming to improve the mechanical performance.The microstructure analysis showed that nano-SiC distributed along Zn grain boundaries.During the laser rapid solidification,nano-SiC particles acted as the sites for heterogeneous nucleation,which resulted in the reduction of Zn grain size from 250μm to 15μm with 2 wt%SiC(Zn-2 SiC).Meanwhile,nano-SiC acted as a reinforcer by virtue of Orowan strengthening and dispersion strengthening.As a consequence,the nanocomposites showed maximal compressive yield strength(121.8±5.3 MPa)and high microhardness(72.24±3.01 HV),which were increased by 441%and 78%,respectively,compared with pure Zn.Moreover,fracture analysis indicated a more ductile fracture of the nanocomposites after the incorporation of nano-SiC In addition,the nanocomposites presented favorable biocompatibility and accelerated degradation caused by intergranular corrosion.These findings suggested that the nano-SiC reinforced Zn biocomposites may be the potential candidates for orthopedic implants. | Chengde Gao Meng Yao Cijun Shuai Shuping Peng Youwen Deng | 2019 | Journal of Materials Science & Technology2019，35，11： | 4 |
| 14 | Copy number variants of ABCF1, IL17REL, and FCGR3A are associated with the risk of gout显示文摘 | Dong, Zheng Li, Yuan Zhou, Jingru Jiang, Shuai Wang, Yi Chen, Yulin Zhao, Dongbao Yang, Chengde Qian, Qiaoxia Ma, Yanyun He, Hongjun Ji, Hengdong Yang, Yajun Wang, Xiaofeng Xu, Xia Pang, Yafei Zou, Hejian Jin, Li Zhang, Feng Wang, Jiucun | 2017 | Protein & Cell2017，8，6： | 3 |
| 15 | Al Preparation from Solid Al_2O_3 by Direct Electrochemical Deoxidation in Molten CaCl_2-NaCl at 550℃显示文摘Al was prepared by a new method in molten salt at low temperature.Sintered alumina pellets were used as cathode;graphite rod was employed as anode;and the molten CaCl2-NaCl was the electrolyte.A constant 3.2 V voltage was applied in this experiment,and oxygen in solid alumina cathode was reduced by direct electrochemical deoxidation at 550℃.In this process,the current gradually decreased with increasing time and the alumina pellets became grey and porous.The metallic particles were obtained and characterized by XRD(X-ray diffraction) and SEM(scanning electron microscopy). | Hongwei Xie He Zhang Yuchun Zhai Jinxia Wanga Chengde Li | 2009 | Journal of Materials Science & Technology2009，25，4： | 3 |
| 16 | Physical stimulations and their osteogenesis-inducing mechanisms显示文摘Physical stimulations such as magnetic,electric and mechanical stimulation could enhance cell activity and promote bone formation in bone repair process via activating signal pathways,modulating ion channels,regulating bonerelated gene expressions,etc.In this paper,bioeffects of physical stimulations on cell activity,tissue growth and bone healing were systematically summarized,which especially focused on their osteogenesis-inducing mechanisms.Detailedly,magnetic stimulation could produce Hall effect which improved the permeability of cell membrane and promoted the migration of ions,especially accelerating the extracellular calcium ions to pass through cell membrane.Electric stimulation could induce inverse piezoelectric effect which generated electric signals,accordingly up-regulating intracellular calcium levels and growth factor synthesis.And mechanical stimulation could produce mechanical signals which were converted into corresponding biochemical signals,thus activating various signaling pathways on cell membrane and inducing a series of gene expressions.Besides,bioeffects of physical stimulations combined with bone scaffolds which fabricated using 3D printing technology on bone cells were discussed.The equipments of physical stimulation system were described.The opportunities and challenges of physical stimulations were also presented from the perspective of bone repair. | Cijun Shuai Wenjing Yang Shuping Peng Chengde Gao Wang Guo Yuxiao Lai Pei Feng | 2018 | International Journal of Bioprinting2018，4，2： | 3 |
| 17 | Dual alloying improves the corrosion resistance of biodegradable Mg alloys prepared by selective laser melting显示文摘Mg alloys have been regarded as revolutionary metallic biomaterials for biodegradable bone implants,but their applications are mainly blocked by the too rapid degradation in physiological environment.This study explores the dual alloying effects of Mn and/or Sn on the performance of Mg alloys prepared by selective laser melting.The observed microstructure indicated remarkable refinement of both the grains and intermetallic phases in the Mn-and/or Sn-containing alloys during the rapid solidification process.Moreover,approximately a half decrease in corrosion rate was observed for AZ61-0.4Mn-0.8Sn alloy with respect to AZ61 alloy.The improved corrosion behavior was primarily due to the enhanced protective effects of surface layers,in which Mn-and/or Sn-rich phases acted as a helpful barrier against medium penetration and thereby alleviated the current exchange with the matrix.In addition,the solute Mn and/or Sn positively shifted the corrosion potential,which also brought about a better corrosion resistance.Furthermore,the strength and hardness of the alloys were also effectively improved and comparable to those of cortical bone.This could be ascribed to the dissolved Mn and/or Sn atoms and the finely dispersed intermetallic phases,which might cause lattice distortion and precipitation hardening.Besides,the Mn-and/or Sn-containing alloys showed good cytocompatibility as indicated by the normal morphology and increased viability of MG-63 cells.These findings suggest that the developed AZ61-Mn-Sn alloy is a promising candidate for biodegradable bone implants. | Chengde Gao Sheng Li Long Liu Shizhen Bin Youwen Yang Shuping Peng Cijun Shuai | 2021 | Journal of Magnesium and Alloys2021，9，1： | 3 |
| 18 | Achieving higher performances without an external curing agent in natural magnolol-based epoxy resin显示文摘Bio-based epoxy thermoset prepared from renewable biomass raw materials can alleviate fossil energy crisis and reduce environmental pollution,which satisfies the needs of sustainable social development.In this study,a bio-based epoxy thermoset precursor(MGOL-EP) was synthesized from a naturally occurring magnolol through a facile and efficient one-step process.And the fully bio-based epoxy thermoset(MGOL-EP-SC) was obtained by self-curing without adding any other hardener.MGOL-EP-SC revealed an extremely high glass-transition temperature(T_(g)) of 265℃ and char yield of 53.2%(in N;),which were at the highest level among the fully bio-based epoxy thermosets reported so far.In addition,when the MGOL-EP was cured with 4,4’-methylenedianiline(DDM),T_(g)of the MGOL-EP/DDM was decreased by 61℃ and the other comprehensive performance had also been decreased,which was due to a reduction in biphenyl structure content and cross-linking density by adding the external curing agents.Moreover,the MGOL-EP-SC presented certain killing rate(48.4%) to Staphylococcus aureus.These findings provide a new design strategy for engineering high-performance and functional epoxy thermoset with high biomass content. | Qi Cao Zhihuan Weng Yu Qi Jiahui Li Wentao Liu Chengde Liu Shouhai Zhang Zhiyong Wei Yousi Chen Xigao Jian | 2022 | Chinese Chemical Letters2022，33，4： | 2 |
| 19 | A biomass burning record from the Lingtai Loess Section during the last 370 ka and implication for climate and environment显示文摘The history of natural fire and its rela- tionship with climate and vegetation are revealed from the content of elemental carbon and associated pollen data and paleoclimatic substitutive indicators for the loess of Lingtai Section in the last 370 ka BP. The study indicates that intense episodes of vegeta- tion fires occurred during the interim especially when the climate was changing from wet to drought. The average content of elemental carbon in the intergla- ciers is higher than that in the glaciers, which coin- cides with the biomass change locally (or globally). The content of elemental carbon increases in the stage around 130 ka BP, indicating that the vegeta- tion and climate pattern have changed, which may contribute to the variation of CO2. As a whole, the content of elemental carbon increasing with the time reflects the increasing aridity trend to some degree. In addition, the occurrence of the maximum peak and the highest average content of elemental carbon in the Holocene reflects the occurrence of a rapid cli- mate event in 5900 a BP and more frequent fires caused by anthropic activities. | ZHOU Bin SHEN Chengde SUN Yanmin YANG Ying YI Weixi | 2006 | Chinese Science Bulletin2006，51，17： | 2 |
| 20 | Research on System Control and Energy Management Strategy of Flux-Modulated Compound-Structure Permanent Magnet Synchronous Machine显示文摘The flux-modulated compound-structure permanent magnet synchronous machine (CS-PMSM), composed of a brushless double rotor machine (DRM) and a conventional permanent magnet synchronous machine (PMSM), is a power split device for plug-in hybrid electric vehicles. In this paper, its operating principle and mathematical model are introduced. A modified current controller with decoupled state feedback is proposed and verified. The system control strategy is simulated in Matlab, and the feasibility of the control system is proven. To improve fuel economy, an energy management strategy based on fuzzy logic controller is proposed and evaluated by the Urban Dynamometer Driving Schedule (UDDS) drive cycle. The results show that the total energy consumption is similar to that of Prius 2012. | Jiaqi Liu Chengde Tong Zengfeng Jin Guangyuan Qiao Ping Zheng | 2017 | CES Transactions on Electrical Machines and Systems2017，1，2： | 2 |
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