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127篇 您的检索式:作者名="Yaqian"
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1用于锂金属负极的轻质、高掺氮量碳纳米纤维基三维集流体(英文)显示文摘锂金属是未来二次电池实现高能量密度化的关键负极材料,然而,如何实现锂金属的均匀和无枝晶沉积是目前制约其实际应用的关键问题.本论文采用静电纺丝技术及高温碳化方法制备了一种轻质、高掺氮量(9.5 at%)的三维碳纳米纤维集流体.该集流体较低的密度能提升基于整个电池的能量密度,而且高掺氮量使其具备亲锂的特性,从而有效降低锂离子在其表面的初始形核过电位,得到均匀的金属锂种子层,实现后续金属锂的均匀沉积.这种三维结构有效抑制了锂枝晶的产生,降低了电池的极化,金属锂沉积/脱除测试中其库伦效率在循环250圈后仍可保持在98%以上.将其沉积金属锂后与LiFePO_4组装全电池,电池极化降低,在循环300圈后容量保持率可达82.4%,表现出很好的应用前景.吴浩良 张云博 Yaqian Deng 邓亚茜 黄志佳 张琛 贺艳兵 吕伟 杨全红 2019Science China Materials2019,62,1:15
2Hybrid constructed wetlands for highly polluted river water treatment and comparison of surface-and subsurface-flow cells显示文摘A series of large pilot constructed wetland(CW) systems were constructed near the confluence of an urban stream to a larger river in Xi'an, a northwestern megacity in China, for treating polluted stream water before it entered the receiving water body. Each CW system is a combination of surfaceand subsurface-flow cells with local gravel, sand or slag as substrates and Phragmites australis and Typha orientalis as plants. During a one-year operation with an average surface loading of 0.053 m3/(m2·day), the overall COD, BOD, NH3-N, total nitrogen(TN) and total phosphorus(TP) removals were 72.7% ± 4.5%, 93.4% ± 2.1%, 54.0% ± 6.3%, 53.9% ± 6.0% and 69.4% ± 4.6%, respectively, which brought about an effective improvement of the river water quality. Surface-flow cells showed better NH3-N removal than their TN removal while subsurface-flow cells showed better TN removal than their NH3-N removal. Using local slag as the substrate, the organic and phosphorus removal could be much improved. Seasonal variation was also found in the removal of all the pollutants and autumn seemed to be the best season for pollutant removal due to the moderate water temperature and well grown plants in the CWs.Yucong Zheng Xiaochang Wang Jiaqing Xiong Yongjun Liu Yaqian Zhao 2014Journal of Environmental Sciences2014,26,4:13
3Investigation of benzylisoquinoline alkaloid biosynthetic pathway and its transcriptional regulation in lotus显示文摘Lotus predominantly accumulates benzylisoquinoline alkaloids(BIAs),but their biosynthesis and regulation remain unclear.Here,we investigated structural and regulatory genes involved in BIA accumulation in lotus.Two clustered CYP80 genes were identified to be responsible for the biosynthesis of bis-BIAs and aporphine-type BIAs,respectively,and their tissue-specific expression causes divergence in alkaloid component between leaf and embryo.In contrast with the common(S)-reticuline precursor for most BIAs,aporphine alkaloids in lotus leaf may result from the(S)-N-methylcoclaurine precursor.Structural diversity of BIA alkaloids in the leaf is attributed to enzymatic modifications,including intramolecular C–C phenol coupling on ring A and methylation and demethylation at certain positions.Additionally,most BIA biosynthetic pathway genes show higher levels of expression in the leaf of high-BIA cultivar compared with low-BIA cultivar,suggesting transcriptional regulation of BIA accumulation in lotus.Five transcription factors,including three MYBs,one ethylene-responsive factor,and one basic helix–loop–helix(bHLH),were identified to be candidate regulators of BIA biosynthesis in lotus.Our study reveals a BIA biosynthetic pathway and its transcriptional regulation in lotus,which will enable a deeper understanding of BIA biosynthesis in plants.Xianbao Deng Li Zhao Ting Fang Yaqian Xiong Collins Ogutu Dong Yang Sornkanok Vimolmangkang Yanling Liu Yuepeng Han 2018Horticulture Research2018,5,1:8
4An air-stable and waterproof lithium metal anode enabled by wax composite packaging显示文摘The reviving use of lithium metal anode(LMA)is one of the most promising ways to upgrade the energy density of lithium ion batteries.In the roadmap towards the real use,besides the formation of the dendrite,various adverse reactions due to the high activity of LMA when exposed to air or the electrolyte limit its practical applications.Learning from the packaging technology in electronic industry,we propose a wax-based coating compositing with the ion conducting poly(ethylene oxide)by a simple dip-coating technology and the prepared LMA is featured with an air-stable and waterproof surface.The LMA thus remains stable for 24 h in ambient air even with the relative humidity of 70% while retaining about85% its electrochemical capacity.More importantly,the LMA is accessible to water and when dipping in water,no obvious adverse reactions or capacity decay is observed.With the composite coating,a steady cycling performance for 500 h in symmetrical cells and a low capacity decay rate of 0.075% per cycle after 300 cycles in lithium-sulfur batteries assembled with the packaged anode have been achieved.This work demonstrates a very simple and effective LMA package technology which is easily scalable and is very promising for speeding up the industrialization of lithium-sulfur batteries and shows potentials for the large-scale production of air-sensitive electrode materials not limited to LMAs.Yunbo Zhang Wei Lv Zhijia Huang Guangmin Zhou Yaqian Deng Jun Zhang Chen Zhang Boyu Hao Qi Qi Yan-Bing He Feiyu Kang Quan-Hong Yang 2019Science Bulletin2019,64,13:7
5Mapping the immune microenvironment for mandibular alveolar bone homeostasis at single-cell resolution显示文摘Alveolar bone is the thickened ridge of jaw bone that supports teeth.It is subject to constant occlusal force and pathogens invasion,and is therefore under active bone remodeling and immunomodulation.Alveolar bone holds a distinct niche from long bone considering their different developmental origin and postnatal remodeling pattern.However,a systematic explanation of alveolar bone at single-cell level is still lacking.Here,we construct a single-cell atlas of mouse mandibular alveolar bone through single-cell RNA sequencing(scRNA-seq).A more active immune microenvironment is identified in alveolar bone,with a higher proportion of mature immune cells than in long bone.Among all immune cell populations,the monocyte/macrophage subpopulation most actively interacts with mesenchymal stem cells(MSCs)subpopulation.Alveolar bone monocytes/macrophages express a higher level of Oncostatin M(Osm)compared to long bone,which promotes osteogenic differentiation and inhibits adipogenic differentiation of MSCs.In summary,our study reveals a unique immune microenvironment of alveolar bone,which may provide a more precise immune-modulatory target for therapeutic treatment of oral diseases.Weimin Lin Qiwen Li Danting Zhang Xiaohan Zhang Xingying Qi Qian Wang Yaqian Chen Caojie Liu Hanwen Li Shiwen Zhang Yuan Wang Bin Shao Li Zhang Quan Yuan 2021Bone Research2021,9,1:6
6Robust YAG:Ce single crystal for ultra-high efficiency laser lighting显示文摘At present,solid-state laser-driven lighting fabricated with blue laser diode(LD)and phosphor has been greatly developed in high-power lighting applications.The major obstacle is the luminescence saturation threshold of the fluorescence conversion material(YAG:Ce).In this work,we successfully prepared a series of high-quality and robust YAG:Ce single crystals.With high quantum efficiency(QE=92%),regular crystal structure and high thermal conductivity,the single-crystal has excellent ability to deal with high radiation flux and thermal accumulation generated by high power.Matching the single-crystal with the laser,the luminous efficiency up to 274 lm/W and saturation threshold of 12 W/mm^(2) were obtained.In addition,the influence of Ce doping concentration and sample processing conditions on the indicators in laser-driven white lighting was systematically studied.The results are of great significance and are believed to promote the development of solid-state laser-driven lighting.Yaqian Zhang Jianming Liu Yujie Zhang Haisheng Yang Yanxia Yu Qingyun He Xiaojuan Liang Yongfu Liu Weidong Xiang 2022Journal of Rare Earths2022,40,5:5
7Comments on 2018 CPCS guideline for diagnosis and treatment of syncopein children and adolescents显示文摘Syncope is one kind of transient loss of consciousness,due to transient global cerebral hypoperfusion.It is sometimes misunderstood with other causes of transient loss of consciousness,like epilepsy,metabolic disorders,head trauma,psychological factors,and so on.Syncope in children and adolescents is common and seriously impacts the quality of their lives.However,its pathogenesis,etiologies,diagnosis and management are complex.The studies on syncope attract great interest of pediatricians and great progress has been made in this interesting field.Based on the improvement achieved so far,Chinese Pediatric Cardiology Society(CPCS)successfully developed a guideline for the diagnosis and treatment of syncope in children and adolescents,which would greatly improve the level of clinical management of syncope.Chunyan Tao Xueqin Liu Chunyu Zhang Yonghong Chen? Yaqian Huang? 2019Science Bulletin2019,64,5:5
81000 Wh L^(-1)lithium-ion batteries enabled by crosslink-shrunk tough carbon encapsulated silicon microparticle anodes显示文摘Microparticulate silicon(Si),normally shelled with carbons,features higher tap density and less interfacial side reactions compared to its nanosized counterpart,showing great potential to be applied as high-energy lithium-ion battery anodes.However,localized high stress generated during fabrication and particularly,under operating,could induce cracking of carbon shells and release pulverized nanoparticles,significantly deteriorating its electrochemical performance.Here we design a strong yet ductile carbon cage from an easily processing capillary shrinkage of graphene hydrogel followed by precise tailoring of inner voids.Such a structure,analog to the stable structure of plant cells,presents‘imperfection-tolerance’to volume variation of irregular Si microparticles,maintaining the electrode integrity over 1000 cycles with Coulombic efficiency over 99.5%.This design enables the use of a dense and thick(3 m Ah cm^(-2))microparticulate Si anode with an ultra-high volumetric energy density of 1048 Wh L^(-1)achieved at pouch full-cell level coupled with a Li Ni_(0.8)Co_(0.1)Mn_(0.1)O_(2)cathode.Fanqi Chen Junwei Han Debin Kong Yifei Yuan Jing Xiao Shichao Wu Dai-Ming Tang Yaqian Deng Wei Lv Jun Lu Feiyu Kang Quan-Hong Yang 2021National Science Review2021,8,9:4
9AFF4 regulates osteogenic differentiation of human dental follicle cells显示文摘As a member of the AFF(AF4/FMR2)family,AFF4 is a transcription elongation factor that is a component of the super elongation complex.AFF4 serves as a scaffolding protein that connects transcription factors and promotes gene transcription through elongation and chromatin remodelling.Here,we investigated the effect of AFF4 on human dental follicle cells(DFCs)in osteogenic differentiation.In this study,we found that small interfering RNA-mediated depletion of AFF4 resulted in decreased alkaline phosphatase(ALP)activity and impaired mineralization.In addition,the expression of osteogenic-related genes(DLX5,SP7,RUNX2 and BGLAP)was significantly downregulated.In contrast,lentivirus-mediated overexpression of AFF4 significantly enhanced the osteogenic potential of human DFCs.Mechanistically,we found that both the mRNA and protein levels of ALKBH1,a critical regulator of epigenetics,changed in accordance with AFF4 expression levels.Overexpression of ALKBH1 in AFF4-depleted DFCs partially rescued the impairment of osteogenic differentiation.Our data indicated that AFF4 promoted the osteogenic differentiation of DFCs by upregulating the transcription of ALKBH1.Qingyue Xiao Yuning Zhang Xingying Qi Yaqian Chen Rui Sheng Ruoshi Xu Quan Yuan Chenchen Zhou 2020International Journal of Oral Science2020,12,4:4
10Synthesis of layered double hydroxides/graphene oxide nanocomposite as a novel high-temperature CO_2 adsorbent显示文摘In this contribution, a novel high-temperature CO2 adsorbent consisting of Mg-Al layered double hydroxide(LDH) and graphene oxide(GO)nanosheets was prepared and evaluated. The nanocomposite-type adsorbent was synthesized based on the electrostatically driven self-assembly between positively charged Mg-Al LDH single sheet and negatively charged GO monolayer. The characteristics of this novel adsorbent were investigated using XRD, FE-SEM, HRTEM, FT-IR, BET and TGA. The results showed that both the CO2 adsorption capacity and the multicycle stability of LDH were increased with the addition of GO owing to the enhanced particle dispersion and stabilization. In particular, the absolute CO2 capture capacity of LDH was increased by more than twice by adding 6.54 wt% GO as support. GO appeared to be especially effective for supporting LDH sheets. Moreover, the CO2 capture capacity of the adsorbent could be further increased by doping with 15 wt%K2CO3. This work demonstrated a new approach for the preparation of LDH-based hybrid-type adsorbents for CO2 capture.Junya Wang Xueyi Mei Liang Huang Qianwen Zheng Yaqian Qiao Ketao Zang Shengcheng Mao Ruoyan Yang Zhang Zhang Yanshan Gao Zhanhu Guo Zhanggen Huang Qiang Wang 2015Journal of Energy Chemistry2015,24,2:4
11ADAMTS-7 promotes vascular smooth muscle cells proliferation in vitro and in vivo显示文摘Vascular smooth muscle cell(VSMC) proliferation and migration are pivotal for the pathogenesis of atherosclerosis and post-angioplasty restenosis. We have recently reported that a disintegrin and metalloproteinase with thrombospondin motifs-7(ADAMTS-7), a novel metalloproteinase, contributes directly to neointima formation by mediating VSMC migration. However, whether ADAMTS-7 affects VSMC proliferation remains unclear. In this study, we found that luminal adenoviral delivery of ADAMTS-7 aggravated intimal hyperplasia 7 d after injury, paralleled by an increased percentage of PCNA-positive cells in both intima and media. In contrast, perivascular administration of ADAMTS-7 si RNA, but not scrambled si RNA to injured arteries attenuated intimal thickening at day 7, paralleled with reduced intimal VSMC replication, without alteration of VSMC proliferation in the media. In accordance, [3H]-thymidine incorporation assay in primary cultured rat VSMCs revealed an enhanced replication rate(by 61%) upon ADAMTS-7 overexpression and retarded proliferation(by 23%) upon ADAMTS-7 si RNA administration. Our data demonstrates that ADAMTS-7 promotes VSMC proliferation both in vitro and in vivo. ADAMTS-7 may therefore serve as a novel therapeutic target for atherosclerosis and post-angioplasty restenosis.ZHANG Lu YU Fang WANG Li ZHENG JinGang DU YaoYao HUANG YaQian LIU Bo WANG Xian KONG Wei 2015Science China(Life Sciences)2015,58,7:4
12Catalog of Enhanced Geothermal Systems based on Heat Sources显示文摘It is common sense that a deeper well implies higher temperature in the exploration of deep geothermal resources, especially with hot dry rock(HDR) geothermal resources, which are generally exploited in terms of enhanced geothermal systems(EGS). However, temperature is always different even at the same depth in the upper crust due to different heat sources. This paper summarizes the heat sources and classifies them into two types and five sub-types: crustorigin(partial melting, non-magma-generated tectonic events and radiogenic heat production), and mantle-origin(magma and heat conducted from the mantle). A review of global EGS sites is presented related to the five sub-types of heat sources. According to our new catalog, 71% of EGS sites host mantle-origin heat sources. The temperature logging curves indicate that EGS sites which host mantle-origin magma heat sources have the highest temperature. Therefore, high heat flow(>100 m W/m^(2)) regions with mantle-origin magma heat sources should be highlighted for the future exploration of EGS. The principle to identify the heat source is elucidated by applying geophysical and geochemical methods including noble gas isotope geochemistry and lithospheric thermal structure analysis. This analytical work will be helpful for the future exploration and assessment of HDR geothermal resources.KONG Yanlong PAN Sheng REN Yaqian ZHANG Weizun WANG Ke JIANG Guangzheng CHENG Yuanzhi SUN Wenjie ZHANG Chao HU Shengbiao HE Lijuan 2021Acta Geologica Sinica(English Edition)2021,95,6:3
13Electrochemical behavior and the determination of methyl jasmonate显示文摘In this work,the electrochemical behavior of methyl jasmonate(MeJA)on a glassy carbon electrode was investigated in 0.1 mol/L H2SO4 by voltammetry.MeJA exhibited enhanced oxidation behavior in the presence of sodium dodecyl sulfate(SDS). The electrochemical reaction of MeJA on the electrode was carried out with SDS micelles to improve the solubility of MeJA by hydrophobic interaction.Consequently,the oxidation peak current was sensitively enhanced.The effect of experimental parameters on the oxidative peak current was investigated including the surfactant concentration,supporting electrolyte,accumulation potential and time,and scan rate.LIAO YaQian WANG Fang CHEN ZiLin 2010Chinese Science Bulletin2010,55,21:3
14Vertical Graphenes Grown on a Flexible Graphite Paper as an All-Carbon Current Collector towards Stable Li Deposition显示文摘Lithium(Li)metal has been regarded as one of the most promising anode materials to meet the urgent requirements for the next-generation high-energy density batteries.However,the practical use of lithium metal anode is hindered by the uncontrolled growth of Li dendrites,resulting in poor cycling stability and severe safety issues.Herein,vertical graphene(VG)film grown on graphite paper(GP)as an all-carbon current collector was utilized to regulate the uniform Li nucleation and suppress the growth of dendrites.The high surface area VG grown on GP not only reduces the local current density to the uniform electric field but also allows fast ion transport to homogenize the ion gradients,thus regulating the Li deposition to suppress the dendrite growth.The Li deposition can be further guided with the lithiation reaction between graphite paper and Li metal,which helps to increase lithiophilicity and reduce the Li nucleation barrier as well as the overpotential.As a result,the VG film-based anode demonstrates a stable cycling performance at a current density higher than 5mAcm^(-2)in half cells and a small hysteresis of 50mV at 1mAcm^(-2)in symmetric cells.This work provides an efficient strategy for the rational design of highly stable Li metal anodes.Zhijia Huang Debin Kong Yunbo Zhang Yaqian Deng Guangmin Zhou Chen Zhang Feiyu Kang Wei Lv Quan-Hong Yang 2020Research2020,,1:3
15Peptidome analysis of human intrauterine adhesion tissues and the identification of antifibrotic peptide显示文摘Intrauterine adhesion(IUA)is a common clinical endometrial disease,which can severely damage the fertility and quality of life in women.This study aims to find the differentially expressed endogenous peptides and their possible roles in IUA.Liquid chromatography-mass spectrometry was used to identify the peptidomic profiling of IUA tissues,and the differentially expressed peptides were screened out.Using real-time quantitative PCR,Western blotting,and immunocytochemistry staining,the function of six endogenous peptides was verified in vitro.It was found that peptide 6(T6)(peptide sequence:TFGGAPGFPLGSPLSSVFPR)could inhibit the expression of TGF-β1-induced cell fibrosis in human endometrial stromal cell line and primary human endometrial stromal cell at a concentration of 50μmol/L.This study provides new targets for further clarifying the formation and prevention of IUA.Xiangdong Hua Yan Zhang Juan Xu Lu Xu Yaqian Shi Dazhen Yang Xiaoyan Gu Sumin Wang Xuemei Jia Feng Xu Jie Chen Xiaoyan Ying 2022The Journal of Biomedical Research2022,36,4:3
16Equilibrium Joining Strategies in the M/M/1 Queues with Setup Times under N-Policy显示文摘This paper carries out a game-theoretic analysis of a single-server queueing system with setup times under N-policy by considering both the partially observable and the partially unobservable information scenarios. The server switches off whenever the system becomes empty, and is resumed when the number of customers reaches a certain threshold value. Customers decide whether to join or to balk the system upon arrival based on their available information. The equilibrium joining strategy of customers as well as the systemzs performance measures are derived under different information levels. We find that both Follow-the-Crowd (FTC) and Avoid-the-Crowd (ATC) behaviors exist in our system. Numerical results show that the social welfare is unimodal in the threshold, and is decreasing in the waiting cost.Yaqian Hao Jinting Wang Zhongbin Wang Mingyu Yang 2019Journal of Systems Science and Systems Engineering2019,28,2:3
17A Novel Attribute-Based Encryption Approach with Integrity Verification for CAD Assembly Models显示文摘Cloud manufacturing is one of the three key technologies that enable intelligent manufacturing.This paper presents a novel attribute-based encryption(ABE)approach for computer-aided design(CAD)assembly models to effectively support hierarchical access control,integrity verification,and deformation protection for co-design scenarios in cloud manufacturing.An assembly hierarchy access tree(AHAT)is designed as the hierarchical access structure.Attribute-related ciphertext elements,which are contained in an assembly ciphertext(ACT)file,are adapted for content keys decryption instead of CAD component files.We modify the original Merkle tree(MT)and reconstruct an assembly MT.The proposed ABE framework has the ability to combine the deformation protection method with a content privacy of CAD models.The proposed encryption scheme is demonstrated to be secure under the standard assumption.Experimental simulation on typical CAD assembly models demonstrates that the proposed approach is feasible in applications.Yueting Yang Fazhi He Soonhung Han Yaqian Liang Yuan Cheng 2021Engineering2021,7,6:3
18Hofmeister Effect-Assisted Strong Natural Biopolymer-Based Hydrogels with Multi-Functions显示文摘Natural biopolymer-based hydrogels have been extensively studied in recent years due to their excellent biocompatibility.However,the preparation of multi-functional and tough natural biopolymer-based hydrogels is still a challenging problem.Herein,a natural biopolymer-based hydrogel is prepared using gelatin and carboxymethyl chitosan(CMCS)through a one-step soaking method.The prepared hydrogel without any synthetic polymers and crosslinking agents has a fully physical crosslinking structure.Due to the hydrophobic interaction brought by the Hofmeister effect,the mechanical properties of soaked hydrogels(tensile stress and strain can reach 3.77 MPa and 1082%)are superior to conventional protein hydrogels.In addition,the prepared gelatin/carboxymethyl chitosan(Gel/CMCS)hydrogels exhibit a variety of appealing properties,including good shape memory,fatigue resistance,electrical conductivity,water retention,drug releasing,antibacterial property,and recyclability.This strategy opens up a new horizon to fabricate hydrogels with excellent mechanical properties and multiple functions,which can extend their applications in the biomedicine area and other related fields.Yaqian Cai Jiachuan Shi Fangzhe Liu Haichao Li Xinya Man Shuang Guan 2021Chinese Journal of Chemistry2021,39,11:3
19Controllable Construction of Bifunctional CoxP@N,P-Doped Carbon Electrocatalysts for Rechargeable Zinc–Air Batteries显示文摘The exploration of cheap,efficient,and durable bifunctional electrocatalysts for oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)is highly desired to push forward the commercialization of rechargeable metal–air batteries.Here,bifunctional ORR/OER electrocatalysts based on CoxP(0Qing Shi Qiao Liu Yapeng Zheng Yaqian Dong Lin Wang Hantao Liu Weiyou Yang 2022Energy & Environmental Materials2022,5,2:2
20Advances in geopolymer materials: A comprehensive review显示文摘Geopolymer is a new environment-friendly cementitious material, and the development of geopolymer can reduce the carbon dioxide emission caused by the development of cement industry. Geopolymer materials not only have excellent mechanical properties, but also have a series of excellent properties such as fire resistance and corrosion resistance. Most industrial solid waste and waste incineration bottom ash are piled up at will, which not only occupies land resources, but also has a bad impact on the environment. Recycling them can be used as raw materials for preparing geopolymers. Geopolymer materials can effectively adsorb heavy metals, dyes, and other radioactive pollution, which is very beneficial to society's future development. However, due to the excellent properties of geopolymer materials, its application goes beyond that. Some useful information about geopolymer materials was introduced in this paper. The paper included the geopolymerization, the source of raw materials, the types of activators, the preparation methods, and the different application fields of geopolymer materials. The factors affecting the fresh properties and mechanical properties of geopolymer materials were discussed. In this paper, the shortcomings and application limitations of geopolymer materials were summarized, and their progress was summarized to lay a theoretical foundation for the long-term development of geopolymer materials.Peiliang Cong Yaqian Cheng 2021Journal of Traffic and Transportation Engineering(English Edition)2021,8,3:2
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