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| 1 | Vegetation cover change and the driving factors over northwest China显示文摘In this paper the spatio-temporal variation of vegetation cover in northwest China during the period of 1982-2006 and its driving factors were analyzed using GIMMS/NDVI data. The annual average NDVI was increased with a rate of 0.0005/a in northwest China and there was an obvious difference between regions. The trend line slopes of NDVI were higher than 0.0005 in the Tianshan Moutains and Altay Mountains of Xinjiang,the Qilian Mountains of Gansu and the eastern part of Qinghai,which indicated the vegetation cover was significantly increased in these areas. The trend line slopes of NDVI were lower than 0.0005 in the southern region of Qinghai,the border regions of Shaanxi and Ningxia,the parts of Gansu and Tarim Basin,Turpan and Tuoli in Xinjiang,which indicated the vegetation cover was declined in these areas. The NDVI of woodland,grassland and cultivated land had an ascending tendency during the study period. The study shows that the vegetation cover change was caused by both natural factors and human activities in northwest China. The natural vegetation change,such as forests was influenced by climate change,while human activities were the main reason to the change of planting vegetation. The changes of vegetation covers for different elevations,slopes and slope aspects were quite different. When the elevation is exceeded to 4,000 m,the NDVI increasing trend was very low;the NDVI at the slope of less than 25° was increased by the ecological construction;the variation of NDVI on sunny slope was stronger than that on shady slope. The temperature rose significantly in recent 25 years in northwest China by an average rate of 0.67oC/10a,and precipitation increased by an average rate of 8.15 mm/10a after 1986. There was positive correlation between vegetation cover and temperature and annual precipitation changes. Rising temperature increased the evaporation and drought of soils,which is not conducive to plant growth,and the irrigation in agricultural areas reduced the correlation between agricultural vegetation NDVI and precipitation. The improvement of agricultural production level and the projects of ecological construction are very important causes for the NDVI increase in northwest China,and the ecological effect of large-scale ecological construction projects has appeared. | ShengPei DAI Bo ZHANG HaiJun WANG YaMin WANG LingXia GUO XingMei WANG Dan LI | 2011 | Journal of Arid Land2011，3，1： | 22 |
| 2 | Multi-step formation, evolution, and functionalization of new cytoplasmic male sterility genes in the plant mitochondrial genomes显示文摘新基因起源是授与 phenotypic 变化和生物差异的 genomic 革新的主要来源。在植物的新 mitochondrial 基因的产生可以引起细胞质的男绝育(厘米) ,它能支持 outcrossing 和增加健康。然而, mitochondrial 基因怎么在结构和功能发源并且演变,仍然保持不清楚。米饭厘米的野未成功的类型被 mitochondrial 基因 WA352c (以前命名的 WA352 ) 授与并且广泛地在混合米饭繁殖被利用了。这里,我们重建由 11 mitochondrial genomic recombinant 的鉴定和分析的 WA352c 的进化轨道在野、栽培的米饭与 WA352c 有关组织。我们推断这些结构在野米饭 Oryza rufipogon,结合的 substoichiometric 变和顺序变化的 mitochondrial 染色体在保存 mitochondrial 序列之中通过多重重新整理产生了。我们鉴别二表示了,但是在这些结构之中的 nonfunctional protogenes,和他们能发展进功能的厘米基因经由的表演定序能减轻蛋白质的自我禁止的潜力的变化。这些顺序变化将资助蛋白质与编码原子核的 mitochondrial 蛋白质 COX11 交往的能力,在花药 tapetum 和男绝育导致早熟的规划房间死亡。而且,我们证明把 COX11 相互作用领域编码为这些 WA352c 相关的基因的序列经历了在进化期间净化选择。我们经由在结构,顺序,拷贝数字,和功能包含渐渐的变化的 multi-recombination/protogene formation/functionalization 机制为新厘米基因的形成和进化建议一个模型。 | Huiwu Tang Xingmei Zheng Chuliang Li Xianrong Xie Yuanling Chen Letian Chen Xiucai Zhao Huiqi Zheng Jiajian Zhou Shan Ye Jingxin Guo Yao-Guang Liu | 2017 | Cell Research2017，27，1： | 11 |
| 3 | High N-doped hierarchical porous carbon networks with expanded interlayers for efficient sodium storage显示文摘Sodium-ion batteries (SIBs) have been attracting considerable attention as a promising candidate for large-scale energy storage because of the abundance and low-cost of sodium resources. However, lack of appropriate anode materials impedes further applications. Herein, a novel self-template strategy is designed to synthesize uniform flowerlike N-doped hierarchical porous carbon networks (NHPCN) with high content of N (15.31 at.%) assembled by ultrathin nanosheets via a self-synthesized single precursor and subsequent thermal annealing. Relying on the synergetic coordination of benzimidazole and 2-methylimidazole with metal ions to produce a flowerlike network, a self-formed single precursor can be harvested. Due to the structural and compositional advantages, including the high N doping, the expanded interlayer spacing, the ultrathin two-dimensional nano-sized subunits, and the three-dimensional porous network structure, these unique NHPCN flowers deliver ultrahigh reversible capacities of 453.7 mAh·g^−1 at 0.1 A·g^−1 and 242.5 mAh·g^−1 at 1 A·g^−1 for 2,500 cycles with exceptional rate capability of 5 A·g^−1 with reversible capacities of 201.2 mAh·g^−1. The greatly improved sodium storage performance of NHPCN confirms the importance of reasonable engineering and synthesis of hierarchical carbon with unique structures. | Dongqin Su Man Huang Junhao Zhang Xingmei Guo Jiale Chen Yanchun Xue Aihua Yuan Qinghong Kong | 2020 | Nano Research2020，13，10： | 5 |
| 4 | Zephyranthes-like Co2NiSe4 arrays grown on 3D porous carbon frame-work as electrodes for advanced supercapacitors and sodium-ion batteries显示文摘Developing suitable electrode materials for electrochemical energy storage devices by biomorph assisted design has become a fascinating topic due to the fantastic properties derived from bio-architectures.Herein,zephyranthes-like Co_(2)NiSe_(4)arrays grown on butterfly wings derived three-dimensional(3D)carbon framework(Z-Co_(2)NiSe_(4)/BWC)is fabricated via hydrothermal assembly and further conversion method.Benefiting from its unique structure and multi-components,the obtained Z-Co_(2)NiSe_(4)/BWC electrode for supercapacitor delivers an excellent specific capacitance of 2,280 F·g^(-1)at 1 A·g^(-1).Impressively,the constructed asymmetric supercapacitor using Co_(2)NiSe_(4)/BWC as positive electrode and activated butterfly wings carbon as negative electrode acquires a high energy density of 42.9 Wh·kg^(-1)at a power density of 800 W·kg^(-1)with robust stability of 94.6%capacitance retention at 10 A·g^(-1)after 5,000 cycles.Moreover,the Z-Co_(2)NiSe_(4)/BWC as anode for sodium-ion batteries exhibits a high specific capacity of 568 mAh·g^(-1)at 0.1 A·g^(-1)and high cycling stability(maintaining 80.1%of the second cycle after 100 cycles).The outstanding electrochemical performances are ascribed to that the synergistic effect of bimetallic selenides and N-doped carbon improves electrochemical activities and conductivity.One-dimensional(1D)nanoneedles grown on 3D porous framework increase the exposure of redox-active sites,endow adequate transmission channels of electrons/ions,and guarantee stability of the electrode during charge/discharge processes.This study will shed light on the avenue towards extending such nanohybrids to excellent energy storage applications. | Yanchun Xue Xingmei Guo Mengrong Wu Jiale Chen Mengting Duan Jing Shi Junhao Zhang Fu Cao Yuanjun Liu Qinghong Kong | 2021 | Nano Research2021，14，10： | 3 |
| 5 | AN EXTENDED MODEL FOR PROJECT PORTFOLIO SELECTION WITH PROJECT DIVISIBILITY AND INTERDEPENDENCY显示文摘在这份报纸,我们与多重时间时期在一根计划地平线上为工程公事包选择问题开发一个扩大模型。模型为真实应用程序同时合并工程可分性和互相依赖的因素。工程可分性作为在文学被看作策略,不是一个不幸的事件,在选择为工程,和在充分执行的工程之中的工程互相依赖的古典概念的最好的实行时间表然后被扩大到执行工程的部分。再投资考虑的另外的限制,安装费用,集的势限制,领先关系并且安排也在模型被包括。为有效计算,等价物混合了整数建议模型的线性编程表示被导出。在四种情形下面的数字例子被举加亮建议模型的特征。特别地,工程可分性的积极效果第一次被显示出。 | Xingmei Li Shu-Cherng Fang Xiaoling Guo Zhibin Deng Jianxun Qi | 2016 | Journal of Systems Science and Systems Engineering2016，25，1： | 3 |
| 6 | KOH-assisted aqueous synthesis of bimetallic metal-organic frameworks and their derived selenide composites for efficient lithium storage显示文摘To solve low efficiency,environmental pollution,and toxicity for synthesizing zeolitic imidazolate frameworks(ZIFs)in organic solvents,a KOH-assisted aqueous strategy is proposed to synthesize bimetallic ZIFs polyhedrons,which are used as precursors to prepare bimetallic selenide and N-doped carbon(NC)composites.Among them,Fe–Co–Se/NC retains the three-dimensional(3D)polyhedrons with mesoporous structure,and Fe–Co–Se nanoparticles are uniform in size and evenly distributed.When assessed as anode material for lithium-ion batteries,Fe–Co–Se/NC achieves an excellent initial specific capacity of 1165.9 m Ah·g^(-1)at 1.0 A·g^(-1),and the reversible capacity of Fe–Co–Se/NC anode is 1247.4 m Ah·g^(-1)after 550 cycles.It is attributed to that the uniform composite of bimetallic selenides and N-doped carbon can effectively tune redox active sites,the stable 3D structure of Fe–Co–Se/NCs guarantees the structural stability and wettability of the electrolyte,and the uniform distribution of Fe–Co–S nanoparticles in size esuppresses the volume expansion and accelerates the electrochemical reaction kinetics. | Shuya Zhang Yanchun Xue Yutang Zhang Chengxing Zhu Xingmei Guo Fu Cao Xiangjun Zheng Qinghong Kong Junhao Zhang Tongxiang Fan | 2023 | International Journal of Minerals,Metallurgy and Materials2023，30，4： | 2 |
| 7 | A channel-confined strategy for synthesizing CoN-CoO_(x)/C as efficient oxygen reduction electrocatalyst for advanced zinc-air batteries显示文摘Designing hybrid transition metal compounds with optimized electronic structure and firmly dispersing them on a matrix to avoid aggregation and shedding is of great significance for achieving high electrocatalytic performances.Herein,an adsorption-complexation-calcination strategy based on channel confining effect is explored to obtain CoN-CoO_(x)hybrid nanoparticles uniformly dispersed in mesoporous carbon.The CoN-CoO_(x)/C composite exhibits excellent electrocatalytic behavior for oxygen reduction reaction(ORR).The half-wave potential and durability are comparable or superior to those of Pt/C.When applying as cathode catalyst for a primary zinc-air battery,the open-circuit voltage and peak power density reach up to 1.394 V and 109.8 mW·cm^(−2),respectively.A high gravimetric energy density of 950.3 Wh·kgZn^(−1) is delivered at 10 mA·cm^(−2) with good rate capability and stability.Density functional theory(DFT)calculation demonstrates the favorable ORR intermediate adsorbability and metallic characteristics of CoN grains with oxide hybridization to optimize the electronic structure.This work provides a facile adjustable approach for obtaining highly dispersed nanoparticles with controllable hybrid composition on a substrate,which is important for future design and optimization of high-performance electrocatalysts. | Xingmei Guo Wei Zhang Jing Shi Mengting Duan Shanjing Liu Junhao Zhang Yuanjun Liu Shenglin Xiong Qinghong Kong | 2022 | Nano Research2022，15，3： | 1 |
| 8 | Ultralong nitrogen/sulfur Co-doped carbon nano-hollowsphere chains with encapsulated cobalt nanoparticles for highly efficient oxygen electrocatalysis显示文摘The development of simple and effective strategies to prepare electrocatalysts,which possess unique and stable structures comprised of metal/nonmetallic atoms for oxygen reduction reaction(ORR)and oxygen evolution reaction(OER),is currently an urgent issue.Herein,an efficient bifunctional electrocatalyst featured by ultralong N,S-doped carbon nano-hollow-sphere chains about 1300 nm with encapsulated Co nanoparticles(Co-CNHSCs)is developed.The multifunctional catalytic properties of Co together with the heteroatom-induced charge redistribution(i.e.,modulating the electronic structure of the active site)result in superior catalytic activities toward OER and ORR in alkaline media.The optimized catalyst Co-CNHSC-3 displays an outstanding electrocatalytic ability for ORR and OER,a high specific capacity of 1023.6 mAh gZn^(-1),and excellent reversibility after 80 h at 10mA cm^(-2)in a Zn-air battery system.This work presents a new strategy for the design and synthesis of efficient multifunctional carbon-based catalysts for energy storage and conversion devices. | Wei Zhang Xingmei Guo Cong Li Jiang-Yan Xue Wan-Ying Xu Zheng Niu Hongwei Gu Carl Redshaw Jian-Ping Lang | 2023 | Carbon Energy2023，5，8： | 1 |
| 9 | The Role of miRNAs in the Differentiation of Adipose-Derived Stem Cells显示文摘 | Jing Chen Shuwen Deng Shu Zhang Zhaozhao Chen Songtao Wu Xiaoxiao Cai Xingmei Yang Bin Guo Qiang Peng | 2014 | Current Stem Cell Research & Therapy2014，，3： | 1 |
| 10 | Theoreti- cal and experimental studies on silica-coated carbon spheres eomposites显示文摘 | Guo Xingmei Liu Haixing Shen Yinghua | 2013 | Appl Surf Sci2013，283，： | 1 |
| 11 | Preparation and lithium storage performances of g-C_(3)N_(4)/Si nanocomposites as anode materials for lithium-ion battery显示文摘As the anode material of lithium-ion battery,silicon-based materials have a high theoretical capacity,but their volume changes greatly in the charging and discharging process.To ameliorate the volume expansion issue of silicobased anode materials,g-C_(3)N_(4)/Si nanocomposites are prepared by using the magnesium thermal reduction technique.It is well known that g-C_(3)N_(4)/Si nanocomposites can not only improve the electronic transmission ability,but also ameliorate the physical properties of the material for adapting the stress and strain caused by the volume expansion of silicon in the lithiation and delithiation process.When g-C_(3)N_(4)/Si electrode is evaluated,the initial discharge capacity of g-C_(3)N_(4)/Si nanocomposites is as high as 1033.3 mAh/g at 0.1 A/g,and its reversible capacity is maintained at 548 mAh/g after 400 cycles.Meanwhile,the improved rate capability is achieved with a relatively high reversible specific capacity of 218 mAh/g at 2.0 A/g.The superior lithium storage performances benefit from the unique g-C_(3)N_(4)/Si nanostructure,which improves electroconductivity,reduces volume expansion,and accelerates lithiumion transmission compared to pure silicon. | Zhengxu BIAN Zehua TANG Jinfeng XIE Junhao ZHANG Xingmei GUO Yuanjun LIU Aihua YUAN Feng ZHANG Qinghong KONG | 2020 | Frontiers in Energy2020，14，4： | 1 |
| 12 | Cobalt-based multicomponent nanoparticles supported on N-doped graphene as advanced cathodic catalyst for zinc-air batteries显示文摘To improve the efficiency of cathodic oxygen reduction reaction(ORR)in zinc-air batteries(ZABs),an adsorption-complexation-calcination method was proposed to generate cobalt-based multicomponent nanoparticles comprising Co,Co_(3)O_(4)and CoN,as well as numerous N heteroatoms,on graphene nanosheets(Co/Co_(3)O_(4)/CoN/NG).The Co/Co_(3)O_(4)/CoN nanoparticles with the size of less than 50 nm are homogeneously dispersed on N-doped graphene(NG)substrate,which greatly improve the catalytic behaviors for ORR.The results show that the half-wave potential is as high as 0.80 V vs.RHE and the limiting current density is 4.60 mA·cm^(−2),which are close to those of commercially available platinum/carbon(Pt/C)catalysts.Applying as cathodic catalyst for ZABs,the battery shows large specific capacity and open circuit voltage of 843.0 mAh∙g^(−1) and 1.41 V,respectively.The excellent performance is attributed to the efficient two-dimensional structure with high accessible surface area and the numerous multiple active sites provided by highly scattered Co/Co_(3)O_(4)/CoN particles and doped nitrogen on the carbon matrix. | Shanjing Liu Xiaohan Wan Yue Sun Shiqi Li Xingmei Guo Ming Li Rui Yin Qinghong Kong Jing Kong Junhao Zhang | 2022 | International Journal of Minerals,Metallurgy and Materials2022，29，12： | 0 |
| 13 | KOH-assisted aqueous synthesis of ZIF-67 with high-yield and its derived cobalt selenide/carbon composites for high-performance Li-ion batteries显示文摘To solve the environmental pollution and low yield during the sythesis of zeolitic imidazolate frameworks(ZIFs)and their derived materials,a KOH-assisted aqueous strategy is proposed to synthesize cobalt zeolitic imidazolate framework(ZIF-67)polyhedrons,which are used as precursors to prepare cobalt selenide/carbon composites with different crystal phases(Co_(0.85)Se,CoSe_2).When evaluated as anode material for lithium ion batteries,Co_(0.85)Se/C composites deliver a reversible capacity of 758.7 m A·h·g^(-1)with a capacity retention rate of 90.5%at 1.0 A·g^(-1)after 500 cycles,and the superior rate capability is 620 m A·h·g^(-1)at 2.0 A·g^(-1).The addition of KOH accelerates the production of ZIF-67 crystals by boosting deprotonation of dimethylimidazole,resulting in rapid growth and structures transition from two-dimensional to three-dimensional of ZIF-67 in aqueous solution,which greatly promotes the application of MOFs in the field of energy storage and conversion. | Kai Xue Yanchun Xue Jing Wang Shuya Zhang Xingmei Guo Xiangjun Zheng Fu Cao Qinghong Kong Junhao Zhang Zhong Jin | 2023 | Chinese Journal of Chemical Engineering2023，57，5： | 0 |
| 14 | Polydopamine functionalized mesoporous silica as ROS-sensitive drug delivery vehicles for periodontitis treatment by modulating macrophage polarization显示文摘Periodontitis is recognized as the major cause of tooth loss in adults, posing an adverse impact on systemic health. In periodontitis, excessive production of reactive oxygen species (ROS) at the inflamed site culminates in periodontal destruction. In this study, a novel ROS-responsive drug delivery system based on polydopamine (PDA) functionalized mesoporous silica nanoparticles was developed for delivering minocycline hydrochloride (MH) to treat periodontitis. The outer PDA layer and the inner MH of the nanoparticles acted as ROS scavengers and anti-inflammatory agents, respectively. Under the synergistic action of PDA and MH, macrophages were polarized from the pro-inflammatory M1 to the anti-inflammatory M2 phenotype. The in vitro experiments provided convincing evidence that PDA could scavenge ROS effectively, and the expression of pro-inflammatory cytokines was attenuated and the secretion of anti-inflammatory cytokines was enhanced through M1 to M2 polarization of macrophages with the cooperation of MH. In addition, the results obtained from the periodontitis rat models demonstrated that the synergetic effect of PDA and MH prevented alveolar bone loss without causing any adverse effect. Taken together, the results from the present investigation provide a new strategy to remodel the inflammatory microenvironment by inducing the polarization of macrophages from M1 toward M2 state for the treatment of periodontitis. | Bingbing Bai Chaoyu Gu Xiaohui Lu Xingyu Ge Junling Yang Chenfei Wang Yongchun Gu Aidong Deng Yuehua Guo Xingmei Feng Zhifeng Gu | 2021 | Nano Research2021，14，12： | 0 |
| 15 | Orange-derived extracellular vesicles nanodrugs for efficient treatment of ovarian cancer assisted by transcytosis effect显示文摘Extracellular vesicles(EVs)have recently received much attention about the application of drug carriers due to their desirable properties such as nano-size,biocompatibility,and high stability.Herein,we demonstrate orange-derived extracellular vesicles(OEV)nanodrugs(DN@OEV)by modifying cRGD-targeted doxorubicin(DOX)nanoparticles(DN)onto the surface of OEV,enabling significantly enhancing tumor accumulation and penetration,thereby efficiently inhibiting the growth of ovarian cancer.The obtained DN@OEV enabled to inducement of greater transcytosis capability in ovarian cancer cells,which presented the average above 10-fold transcytosis effect compared with individual DN.It was found that DN@OEV could trigger receptor-mediated endocytosis to promote early endosome/recycling endosomes pathway for exocytosis and simultaneously reduce degradation in the early endosomes-late endosomes-lysosome pathway,thereby inducing the enhanced transcytosis.In particular,the zombie mouse model bearing orthotopic ovarian cancer further validated DN@OEV presented high accumulation and penetration in tumor tissue by the transcytosis process.Our study indicated the strategy in enhancing transcytosis has significant implications for improving the therapeutic efficacy of thedrugdelivery system. | Feng Long Yao Pan Jinheng Li Suinan Sha Xiubo Shi Haoyan Guo Chuanqing Huang Qian Xiao Chao Fan Xingmei Zhang Jun-Bing Fan Ying Wang | 2023 | Acta Pharmaceutica Sinica B2023，13，12： | 0 |
| 16 | Fabricating titanium dioxide/N-doped carbon nanofibers as advanced interlayer for improving cycling reversibility of lithium-sulfur batteries显示文摘'Shuttle effect' is detrimental for maintaining the high capacity and cycling reversibility of lithium-sulfur batteries(LSBs).To inhibit polysulfide migration,N-doped carbon nanofibers(N-CNFs) membrane comprising TiO_(2)nanoparticles(TiO_(2)/N-CNFs) is fabricated using an electrospinning-calcination method and further applied as interlayer in LSBs.The TiO_(2)/N-CNFs interlayer helps the battery to deliver a high specific capacity of 1155.2 mA·h·g^(-1)at 0.2 C with high Coulombic efficiency,good rate capability and stability.When cycling at 0.5 C,a capacity retention rate of 62.4% is achieved over 300 cycles,which is higher than that of CNFs and TiO_(2)/CNFs counterparts.The excellent performance should mainly be attributed to the alleviated 'shuttle effect' deriving from high polysulfide trapping ability of TiO_(2)nanoparticles and N heteroatoms in interwoven CNFs. | Xingmei Guo Jinfeng Xie Jing Wang Shangqing Sun Feng Zhang Fu Cao Yuanjun Liu Xiangjun Zheng Junhao Zhang Qinghong Kong | 2022 | Chinese Journal of Chemical Engineering2022，，12： | 0 |
| 17 | Discussion on Development of Silk Weaving Trademark Process in Shang Dynasty of China显示文摘 | Xingmei Guo Yiping Qiu | 2013 | 材料科学研究(中英文版)2013，2，3： | 0 |
| 18 | Recent progress on preparation and applications of layered double hydroxides显示文摘The properties of layered double hydroxides(LDHs),including the adjustability of cations in host layers,exchangeability of anions between layers,and tunability of the crystal structure,render them unique characteristics in preparation and applications.Relating to the structural characteristics of LDHs,this work analyzes the research status,advantages and disadvantages of the synthetic methods for LDHs,including hydrothermal,electrodeposition,co-precipitation and anion exchange methods.In addition,the application status and prospects are reviewed,such as photo/electrocatalysis,electrochemical energy storage,magnetic materials,pollutant adsorption,and other fields.Lastly,the critical issues and solutions in the developing process of LDHs are analyzed and proposed. | Mengting Duan Shanjing Liu Qiming Jiang Xingmei Guo Junhao Zhang Shenglin Xiong | 2022 | Chinese Chemical Letters2022，33，10： | 0 |
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