维普中文期刊产品整合服务
19篇 您的检索式:作者名="Yang Chengkai"
    题名 作者 年代 出处 被引量
1bHLH121 Functions as a Direct Link that Facilitates the Activation of FIT by bHLH IVc Transcription Factors for Maintaining Fe Homeostasis in Arabidopsis显示文摘Iron(Fe)deficiency is prevalent in plants grown in neutral or alkaline soil.Plants have evolved sophisticated mechanisms that regulate Fe homeostasis,ensuring survival.In Arabidopsis,FER-LIKE IRON DEFICIENCY-INDUCED TRANSCRIPTION FACTOR(FIT)is a crucial regulator of Fe-deficiency response.FIT is activated indirectly by basic helix-loop-helix(bHLH)IVc transcription factors(TFs)under Fed eficiency;how ever,it remains unclear which protein(s)act as the linker to mediate the activation of FIT by bHLH IVc TFs.In this study,we characterize the functions of bHLH121 and demonstrate that it directly associates with the FIT promoter.We found that loss-of-function mutations of bHLH121 cause severe Fedeficiency symptoms,reduced Feaccum ulation,and disrupted expression of genes associated with Fehomeostasis.Genetic analysis showed that FIT is epistatic to bHLH121 and FIT overexpression partially rescues the bhlh121 mutant.Further investigations revealed that bHLH IVc TFs interact with and promote nuclear accumulation of bHLH121.We demonstrated that bHLH121 has DNA-binding activity and can bind the prom oters of the FIT and bHLHlb genes,but we did not find that it has either direct transcriptional activation or repression activity tow ard these genes.Meanw hile,we found that bHLH121 functions downstream of and is a direct target of bHLH IVc TFs,and its expression is induced by Fe deficiency in a bHLH IV c-dependent manner.Taken together,these results establish that bHLH121 functions together with bHLH IVc TFs to positively regulate the expression of FIT and thus plays a pivotal role in maintaining Fe homeostasis in Arabidopsis.Rihua Lei Yang Li Yuerong Cai Chenyang Li Mengna Pu Chengkai Lu Yujie Yang Gang Liang 2020Molecular Plant2020,13,4:14
2Microstructure and wear resistance of highchromium cast iron containing niobium显示文摘In the paper, the effect of niobium addition on the microstructure, mechanical properties and wear resistance of high chromium cast iron has been studied. The results show that the microstructure of the heattreated alloys is composed of M7C3 and M23C6 types primary carbide, eutectic carbide, secondary carbide and a matrix of martensite and retained austenite. NbC particles appear both inside and on the edge of the primary carbides. The hardness of the studied alloys maintains around 66 HRC, not significantly affected by the Nb content within the selected range of 0.48%-0.74%. The impact toughness of the alloys increases with increasing niobium content. The wear resistance of the specimens presents little variation in spite of the increase of Nb content under a light load of 40 N. However, when heavier loads of 70 and 100 N are applied, the wear resistance increases with increasing Nb content.Zhang Zhiguo Yang Chengkai Zhang Peng Li Wei 2014China Foundry2014,11,3:4
3ZnCo2O4/ZnO induced lithium deposition in multi-scaled carbon/nickel frameworks for dendrite-free lithium metal anode显示文摘Lithium metal attracts growing attention as an ideal anode candidate for next generation lithium battery systems owing to its high capacity,low density,and low working potential.However,the volume expansion of the bulk and dendrite growth on the surface of lithium anode limits its practical application.Herein,we fabricate a composite lithium host featuring both multiple scaled structure and lithiophilic property to address obstacles at both aspects of bulk and surface simultaneously.In which,the multiple scaled structure provides void space to accommodate lithium volume change while zinc and cobalt oxides sites derived from Zeolitic Imidazolate Frameworks can react with lithium and form a stable solid electrolyte interphase,leading to a stable cycling of lithium symmetrical cell for more than 500 cycles with voltage hysteresis of only 88 mV at 2 mAcm^-2 and 5 mAh cm^-2.Moreover,full cells paired with LiFePO4 cathode can realize 500 cycles with 99.2%capacity retention,showing great potential for practical applications.The excellent electrochemical performance of the composite lithium anode proves the effectiveness of our anode design with multiple scaled structure and lithiophilic feature,which can be also expanded to other metal anodes for batteries.Kai Wu Binglu Zhao Chengkai Yang Qian Wang Wen Liu Henghui Zhou 2020Journal of Energy Chemistry2020,29,4:4
4Oryza sativa FER-LIKE FE DEFICIENCY-INDUCED TRANSCRIPTION FACTOR(OsFIT/OsbHLH156)interacts with OsIRO2 to regulate iron homeostasis显示文摘Iron(Fe)is indispensable for the growth and development of plants.It is well known that FER-LIKE FE DEFICIENCY-INDUCED TRANSCRIPTION FACTOR(FIT)is a key regulator of Fe uptake in Arabidopsis.Here,we identify the Oryza sativa FIT(also known as Osb HLH156)as the interacting partner of IRON-RELATED BHLH TRANSCRIPTION FACTOR 2(OsIRO2)that is critical for regulating Fe uptake.The OsIRO2 protein is localized in the cytoplasm and nucleus,but OsFIT facilitates the accumulation of OsIRO2 in the nucleus.Loss-of-function mutations of OsFIT result in decreased Fe accumulation,severe Fe-deficiency symptoms,and disrupted expression of Feuptake genes.In contrast,OsFIT overexpression promotes Fe accumulation and the expression of Fe-uptake genes.Genetic analyses indicate that OsFIT and OsIRO2 function in the same genetic node.Further analyses suggest that OsFIT and OsIRO2 form a functional transcription activation complex to initiate the expression of Fe-uptake genes.Our findings provide a mechanism understanding of how rice maintains Fe homeostasis.Gang Liang Huimin Zhang Yang Li Mengna Pu Yujie Yang Chenyang Li Chengkai Lu Peng Xu Diqiu Yu 2020Journal of Integrative Plant Biology2020,62,5:4
5Progress of Geological Survey Using Airborne Hyperspectral Remote Sensing Data in the Gansu and Qinghai Regions显示文摘Hyperspectral remote sensing is now a frontier of the remote sensing technology.Airborne hyperspectral remote sensing data have hundreds of narrow bands to obtain complete and continuous ground-object spectra.Therefore,they can be effectively used to identifyZHAO Yingjun QIN Kai SUN Yu LIU Dechang TIAN Feng PEI Chengkai YANG Yanjie YANG Guofang ZHOU Jiajing 2015Acta Geologica Sinica(English Edition)2015,89,5:2
6In situ TEM revealing the effects of dislocations on lithium-ion migration in transition metal dichalcogenides显示文摘The two-dimensional (2D) structure of layered transition metal dichalcogenides (TMDs) provides unusual physical properties [1,2]and chemical reactivity [3,4], which can be influenced by defects such as dislocations [5,6]. For example, dislocations can act as nucleation sites for the onset of deformation when subjected to stress [7].Ruiwen Shao Chengkai Yang Chen Yang Shulin Chen Weikang Dong Bairong Li Xiumei Ma Jing Lu Lixin Dong Peng Gao Dapeng Yu 2021Journal of Energy Chemistry2021,30,7:1
7Interwoven nickel(II)-dimethylglyoxime nanowires in 3D nickel foam for dendrite-free lithium deposition显示文摘Metal skeletons,such as Nickel Foam(NF) has attracted worldwide interests as stable host for lithium metal anode because of its high stability,large specific surface area and high conductivity.However,most metal skeletons have lithophobic surface and uneven current distribution that result in sporadic lithium nucleation and uncontrolled dendrites growth.Herein,we describe a sequential immersing strategy to generate interwoven Nickel(Ⅱ)-dimethylglyoxime(Ni-DMG) nanowires at NF to obtain composite skeleton(NDNF),which can be used as an stable host for Li metal storage.The Ni-DMG has proved effective to realize uniform lithium nucleation and dendrite-free lithium deposition.Combing with the three dimensional(3 D) hierarchical porous structure,the composite host shows a significantly improved coulombic efficiency(CE) than pristine commercial nickel foam.Moreover,the corresponding Li‖Li symmetrical cells can run more than 700 h with low voltage hysteresis 22 mV at 1.0 mA/cm^(2),and Li@NDNF‖LiFePO;full-cell exhibits a high capacity retention of 82.03% at 1.0 C during 630 cycles.These results proved the effectiveness of metal-organic complexes in governing Li metal growth and can be employed as a new strategy for dendrite-free Li metal anode and safe Li metal batteries(LMBs).Tianyi Zhou Yanlu Mu Jianyang Wu Bing Zhong Chengkai Yang Qian Wang Wen Liu Henghui Zhou Peng Jiang 2022Chinese Chemical Letters2022,33,4:1
8Organochlorine pesticide residues in surface water from Sichuan Basin to Aba Prefecture profile, east of the Tibetan Plateau显示文摘从四川盆在河里发现到骆驼毛的织物府侧面的 Organochlorine 杀虫剂( OCP )被分析估计可能的健康风险到成年人,把河用作喝的来源的孩子在表面水里浇 OCP 集中在全世界与另外的出版数据相比在 22.29274.28 ng ·L 1.之间变化了,在这研究的 OCP 层次在所有 OCP , hexachlorobenzene ( HCB )和 hexachlorocyclohexanes ( HCH )之中是中等的更高是占优势的混合物 OCP 的集中近被归因于四川盆的农业领域,当前的 OCP 输入,并且从在侧面的 OCP 的在国外各种各样的空间模式的远程的大气的运输可能被用法和杀虫剂的物理化学的性质影响,除了邻近的地理环境,健康风险评价显示大多数 OCP 几乎没为致癌物根据可接受的风险水平在人的健康上有很少影响( 10 6)然而由 US EPA 推荐了, carcinogenic 效果由 heptachlor 引起了, Aldrin , HCB ,并且 -HCH 可能发生在喝水 OCP 引起的否定影响的风险比为成年人为孩子是高得多的。Hongxia LIU Ying HU Shihua QI Xinli XING Yuan ZHANG Dan YANG Chengkai QU 2015Frontiers of Earth Science2015,9,2:1
9Tapered fiber optical tweezers for microscopic particle trapping:fabrication and application显示文摘Liu Zhihai Guo Chengkai Yang Jun 2006Optics Express2006,14,12:1
10Tapered fiber optical tweezers for microscopic particle trapping: fabrication and application 显示文摘Zhihai Liu Chengkai Guo Jun Yang 2006Optics Express2006,14,12:1
11Leap of Li Metal Anodes from Coin Cells to Pouch Cells:Challenges and Progress显示文摘Li metal anodes have attracted tremendous attention in the last decade because of their high theoretical capacities and low electrochemical potentials.However,until now,there has only been limited success in improving the interfacial and structural stabilities and in realizing the highly controllable and large-scale fabrication of this emerging material;these limitations have posed great obstacles to further performing fundamental and applied studies in Li metal anodes.In this review,we focus on summarizing the existing challenges of Li metal anodes based on the leap from coin cells to pouch cells and on outlining typical methods for designing Li metal anodes on demand;we controllably engineer their surface protection layers and structure sizes by encapsulating structured Li metal inside a variety of synthetic protection layers.We aim to provide a comprehensive understanding and serve as a strategic guide for designing and fabricating practicable Li metal anodes for use in pouch batteries.Challenges and opportunities regarding this burgeoning field are critically evaluated at the end of this review.Qian Wang Tiantian Lu Yuanbin Xiao Jianyang Wu Lixiang Guan Lifeng Hou Huayun Du Huan Wei Xiaoda Liu Chengkai Yang Yinghui Wei Henghui Zhou Yan Yu 2023Electrochemical Energy Reviews2023,6,1:0
12Improving luminescence and thermometric performance of Ba_(2)CaWO_(6):Er^(3+) by tri-doping with Yb^(3+) and Na^(+)显示文摘The Er3+doped double perovskite Ba_(2)CaWO_(6) crystal is a promising ratiometric thermometer based on the fluorescence intensity ratio(FIR) of transitions from ^(2)H_(11/2) and ^(4)S_(3/2) to the lowered ^(4)I_(15/2) level.However,the Ca^(2+) vacancy defect caused by the charge difference between rare-earth ions and the substituted alkaline-earth ions gives rise to the non-radiative probability and limits the thermal sensitivity.Here,the up-conversion luminescence and thermometric performance of Er^(3+),Yb^(3+) dopedBa_(2)CaWO_(6) are tuned by tri-doping with alkaline ions.The Ca^(2+) vacancy defect can be eliminated by the introduction of Na^(+),which occupies the Ca^(2+) site when it is doped into Ba_(2)CaWO_(6) with Er^(3+) and Yb^(3+).On the contrary,the doping of Cs^(+) into Ba_(2)CaWO_(6) with Er^(3+) and Yb^(3+) enhances the defect concentration because it occupies the site of Ba^(2+).Thus,the tri-doping of Na^(+) reduces the non-radiative probability and enhances the quantum efficiency of Er^(3+),leading to the improvement of the thermometric sensitivity of Ba_(2)CaWO_(6).As a result,we get an excellent thermometric Ba_(2)CaWO_(6):8%Yb^(3+),3.5%Er^(3+),6%Na^(+) powder with a luminescence lifetime of 515 μs and maximum thermal sensitivity(S_(r)) of 1.45%/K,which is more than three times higher than that of the BCWO:Er^(3+) powder.Lingyun Li Ziwei Zhou Fazheng Huang Senlin Peng Yantang Huang Guoqiang Wang Xinxu Li Fei-Fei Chen Chengkai Yang Xin-Xiong Li Yan Yu 2023Journal of Rare Earths2023,41,1:0
13A Review of Solid Electrolyte Interphase(SEI)and Dendrite Formation in Lithium Batteries显示文摘Lithium-metal batteries with high energy/power densities have significant applications in electronics,electric vehicles,and stationary power plants.However,the unstable lithium-metal-anode/electrolyte interface has induced insufficient cycle life and safety issues.To improve the cycle life and safety,understanding the formation of the solid electrolyte interphase(SEI)and growth of lithium dendrites near the anode/electrolyte interface,regulating the electrodeposition/electrostripping processes of Li^(+),and developing multiple approaches for protecting the lithium-metal surface and SEI layer are crucial and necessary.This paper comprehensively reviews the research progress in SEI and lithium dendrite growth in terms of their classical electrochemical lithium plating/stripping processes,interface interaction/nucleation processes,anode geometric evolution,fundamental electrolyte reduction mechanisms,and effects on battery performance.Some important aspects,such as charge transfer,the local current distribution,solvation,desolvation,ion diffusion through the interface,inhibition of dendrites by the SEI,additives,models for dendrite formation,heterogeneous nucleation,asymmetric processes during stripping/plating,the host matrix,and in situ nucleation characterization,are also analyzed based on experimental observations and theoretical calculations.Several technical challenges in improving SEI properties and reducing lithium dendrite growth are analyzed.Furthermore,possible future research directions for overcoming the challenges are also proposed to facilitate further research and development toward practical applications.Borong Li Yu Chao Mengchao Li Yuanbin Xiao Rui Li Kang Yang Xiancai Cui Gui Xu Lingyun Li Chengkai Yang Yan Yu David P.Wilkinson Jiujun Zhang 2023Electrochemical Energy Reviews2023,6,1:0
14Generation of microfluidic gradients and their effects on cells behaviours显示文摘Introduction The concept of“gradients”has been widely demonstrated and applicated in biology.For example,concentration gradients and potential gradients in the body can regulate the homeostasis as well as the balance of physiological environment;oxygen gradients play a vital role in cellular gene expression and migration.Qiangqiang Tang Xiran Yang Chengkai Xuan Kai Wu Chen Lai Xuetao Shi 2020Bio-Design and Manufacturing2020,3,4:0
15A biomaterial-based therapy for lower limb ischemia using Sr/Si bioactive hydrogel that inhibits skeletal muscle necrosis and enhances angiogenesis显示文摘Muscle necrosis and angiogenesis are two major challenges in the treatment of lower-limb ischemic diseases.In this study,a triple-functional Sr/Si-containing bioceramic/alginate composite hydrogel with simultaneous bioactivity in enhancing angiogenesis,regulating inflammation,and inhibiting muscle necrosis was designed to treat lower-limb ischemic diseases.In particular,sodium alginate,calcium silicate and strontium carbonate were used to prepare injectable hydrogels,which was gelled within 10 min.More importantly,this composite hydrogel sustainedly releases bioactive Sr^(2+)and SiO_(3)^(2-) ions within 28 days.The biological activity of the bioactive ions released from the hydrogels was verified on HUVECs,SMCs,C2C12 and Raw 264.7 cells in vitro,and the therapeutic effect of the hydrogel was confirmed using C57BL/6 mouse model of femoral artery ligation in vivo.The results showed that the composite hydrogel stimulated angiogenesis,developed new collateral capillaries,and re-established the blood supply.In addition,the bioactive hydrogel directly promoted the expression of muscle-regulating factors(MyoG and MyoD)to protect skeletal muscle from necrosis,inhibited M1 polarization,and promoted M2 polarization of macrophages to reduce inflammation,thereby protecting skeletal muscle cells and indirectly promoting vascularization.Our results indicate that these bioceramic/alginate composite bioactive hydrogels are effective biomaterials for treating hindlimb ischemia and suggest that biomaterial-based approaches may have remarkable potential in treating ischemic diseases.Ye Yuan Zhaowenbin Zhang Fandi Mo Chen Yang Yiren Jiao Enci Wang Yuchong Zhang Peng Lin Chengkai Hu Weiguo Fu Jiang Chang Lixin Wang 2023Bioactive Materials2023,,8:0
16Congener-derived template to construct lithiophilic organic-inorganic layer/interphase for high volumetric capacity dendrite-free Li metal batteries显示文摘The development of lithium-metal batteries(LMBs)is seriously restricted by the out-of-control dendrites growth and infinite volume expansion.Herein,a pervasive organic-inorganic layer construction strategy is reported for the composite lithium metal anode with congener-derived organic-inorganic solid electrolyte interphase(SEI).In this strategy,the organic-inorganic Ag@polydopamine(Ag@PDA)layer is coated on the arbitrary substrates by a simple two-step method.The thin and stable congener-derived SEI is insitu formed with fewer inorganic components and more organic components during charging/discharging.The polydopamine with sufficient adhesion groups and lithiophilic Ag layer realize near-zero nucleation overpotential during lithium deposition.The low interface resistance and stable lithium deposition are achieved.Moreover,the practical areal and volumetric capacities of the composite anode with three-dimensional copper(3DCu)as the substrate are 10 mAh/cm^(2)and 1538 mAh/cm^3(vs.the mass of anode).The symmetrical cell shows very low polarization voltage(10 mV)and more than 2500 h cycles life at 1 mA/cm^(2)(1 mAh/cm^(2)).The LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(NCM811)-based full cells show improved capacity retention(82%)after 100 cycles at 0.5 C.The modified lithiophilic anode with congener-derived interphase provides a promising strategy to realize the next-generation dendrite-free LMBs.Kang Yang Long Li Yuanbin Xiao Qiaoli Zhang Chenpeng Xi Borong Li Yan Yu Chengkai Yang 2024Chinese Chemical Letters2024,35,3:0
17A sandwiched patch toward leakage-free and anti-postoperative tissue adhesion sealing of intestinal injuries显示文摘Ideal repair of intestinal injury requires a combination of leakage-free sealing and postoperative antiadhesion.However,neither conventional hand-sewn closures nor existing bioglues/patches can achieve such a combination.To this end,we develop a sandwiched patch composed of an inner adhesive and an outer antiadhesive layer that are topologically linked together through a reinforced interlayer.The inner adhesive layer tightly and instantly adheres to the wound sites via-NHS chemistry;the outer antiadhesive layer can inhibit cell and protein fouling based on the zwitterion structure;and the interlayer enhances the bulk resilience of the patch under excessive deformation.This complementary trilayer patch(TLP)possesses a unique combination of instant wet adhesion,high mechanical strength,and biological inertness.Both rat and pig models demonstrate that the sandwiched TLP can effectively seal intestinal injuries and inhibit undesired postoperative tissue adhesion.The study provides valuable insight into the design of multifunctional bioadhesives to enhance the treatment efficacy of intestinal injuries.Wei Yang Chengkai Xuan Xuemin Liu Qiang Zhang Kai Wu Liming Bian Xuetao Shi 2023Bioactive Materials2023,,6:0
18One-Pot Synthesis of Supertough,Sustainable Polyester Thermoplastic Elastomers Using Block-Like,Gradient Copolymer as Soft Midblock显示文摘It remains challenging to synthesize supertough thermoplastic elastomers(TPEs)since the stretchability and tensile strength are mutually exclusive.Here,we report a one-pot strategy for the preparation of sustainable,triblock polyester TPEs consisting of poly(L-lactide)(PLLA)hard segments and poly(ɛ-caprolactone)-co-poly(δ-valerolactone)(PCVL)soft segments.The TPEs were synthesized successfully with high stretchability(up to 2100%)and strong tensile strength(up to 71.5 MPa)without requiring specific functionalized groups by simply adjusting the polymer microstructures,which,in turn,exhibited a world’s record toughness of 445 MJ/m^(3).Systematic investigation revealed that the block-like,gradient microstructure of PCVL improved the ductility by providing a flexible elastic network and enhancing the tensile strength through strain-induced crystallization.The practicability of this strategy was well demonstrated by lifting a water tank over 30,000 times heavier than itself and easy scale-up experiments.Wuchao Zhao Chengkai Li Xiao Yang Jianghua He Xuan Pang Yuetao Zhang Yongfeng Men Xuesi Chen 2022CCS Chemistry2022,4,4:0
19High current CO_(2)reduction realized by edge/defect-rich bismuth nanosheets显示文摘CO_(2)electroreduction has been regarded as an appealing strategy for renewable energy storage.Recently,bismuth(Bi)electrocatalysts have attracted much attention due to their excellent formate selectivity.However,many reported Bi electrocatalysts suffer from low current densities,which are insufficient for industrial applications.To reach the goal of high current CO_(2)reduction to formate,we fabricate Bi nanosheets(NS)with high activity through edge/terrace control and defect engineering strategy.Bi NS with preferential exposure sites are obtained by topotactic transformation,and the processes are clearly monitored by in-situ Raman and ex-situ X-ray diffraction(XRD).Bi NS-1 with a high fraction of edge sites and defect sites exhibits excellent performance,and the current density is up to ca.870 mA·cm^(−2)in the flow cell,far above the industrially applicable level(100 mA·cm^(−2)),with a formate Faradaic efficiency greater than 90%.In-situ Fourier transform infrared(FT-IR)spectra detect*OCHO,and theoretical calculations reveal that the formation energy of*OCHO on edges is lower than that on terraces,while the defects on edges further reduce the free energy changes(ΔG).The differential charge density spatial distributions reveal that the presence of defects on edges causes charge enrichment around the C–H bond,benefiting the stabilization of the*OCHO intermediate,thus remarkably lowering theΔG.Jiaqi Xu Siheng Yang Li Ji Jiawei Mao Wei Zhang Xueli Zheng Haiyan Fu Maolin Yuan Chengkai Yang Hua Chen Ruixiang Li 2023Nano Research2023,16,1:0
返回顶部 每页显示:
共1页 首页 上一页 第1页 下一页 末页 /1 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费