|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Estimation of wind erosion rates by using ^(137)Cs tracing technique:A case study in Tariat-Xilin Gol transect, Mongolian Plateau显示文摘Wind erosion is one of the major environmental problems in semi-arid and arid regions. Here we es- tablished the Tariat-Xilin Gol transect from northwest to southeast across the Mongolian Plateau, and selected seven sampling sites along the transect. We then estimated the soil wind erosion rates by using the ^(137)Cs tracing technique and examined their spatial dynamics. Our results showed that the ^(137)Cs inventories of sampling sites ranged from 265.63±44.91 to 1279.54±166.53 Bq·m^(-2), and the wind erosion rates varied from 64.58 to 419.63 t·km^(-2)·a^(-1) accordingly. In the Mongolia section of the transect (from Tariat to Sainshand), the wind erosion rate increased gradually with vegetation type and climatic regimes; the wind erosion process was controlled by physical factors such as annual precipitation and vegetation coverage, etc., and the impact of human activities was negligible. While in the China section of the transect (Inner Mongolia), the wind erosion rates of Xilin Hot and Zhengxiangbai Banner were thrice as much as those of Bayannur of Mongolia, although these three sites were all dominated by typical steppe. Besides the physical factors, higher population density and livestock carrying level should be responsible for the higher wind erosion rates in these two regions of Inner Mongolia. | LIU JiYuan SHI HuaDing QI YongQing ZHUANG DaFang HU YunFeng | 2008 | Chinese Science Bulletin2008，53，5： | 16 |
| 2 | Anti-inflammatory activity of curcumin-loaded tetrahedral framework nucleic acids on acute gouty arthritis显示文摘Gouty arthritis is a very familiar inflammatory arthritis.Controlling inflammation is the key to preventing gouty arthritis.However,colchicine,the most highly represented drug used in clinical practice,has strict contraindications owing to some severe side effects.Curcumin(Cur),a natural anti-inflammatory drug,has demonstrated good safety and efficacy.However,the rapid degradation,poor aqueous solubility,and low bioavailability of Cur limit its therapeutic effect.To strengthen the effectiveness and bioavailability of Cur.Cur loaded tetrahedral framework nucleic acids(Cur-TFNAs)were synthesized to deliver Cur.Compared with free Cur,Cur-TFNAs exhibit a preferable drug stability,good biocompatibility(CCK-8 assay),ease of uptake(immunofluorescence),and higher tissue utilization(in vivo biodistribution).Most importantly,Cur-TFNAs present better anti-inflammatory effect than free Cur both in vivo and in vitro experiments through the determination of inflammation-related cytokines expression.Therefore,we believe that Cur-TFNAs have great prospects for the prevention of gout and similar inflammatory diseases. | Mei Zhang Xiaolin Zhang Taoran Tian Qi Zhang Yuting Wen Junyao Zhu Dexuan Xiao Weitong Cui Yunfeng Lin | 2022 | Bioactive Materials2022，7，2： | 10 |
| 3 | Using ^(137)Cs tracing technique to estimate wind erosion rates in the typical steppe region, northern Mongolian Plateau显示文摘Wind erosion is one of the major factors of land degradation in the typical steppe region, northern Mongolian Plateau. Using 137Cs tracing technique, we estimated the wind erosion rates of different pastures and abandoned farmland at Bayannur and Karakorum in Mongolia. The pastures and cutting grassland at Bayannur were slightly eroded by wind, with the rates of 64.58-169.07 t·km?2·a?1. The abandoned farmland in Karakorum, however, was strongly eroded by wind, with annual surface soil loss of 4.05 mm·a?1, and wind erosion rates up to 6723.06 t·km?2·a?1. The total loss of surface soil due to wind erosion has been 17.4 cm since the cultivation of the steppe land in the 1960s. The wind ero- sion rate at the abandoned farmland was much higher than that at the typical steppe sites, showing that the cultivation led to serious wind erosion in the typical steppe region, northern Mongolian Plateau. By contrast, traditional livestock grazing resulted in less disturbance to the surface soil, and did not in- duce to devastating wind erosion, which plays an important role in maintaining the stability of the steppe ecosystem in the northern Mongolian Plateau. | QI YongQing LIU JiYuan SHI HuaDing HU YunFeng ZHUANG DaFang | 2008 | Chinese Science Bulletin2008，53，9： | 8 |
| 4 | Endothelial METRNL determines circulating METRNL level and maintains endothelial function against atherosclerosis显示文摘METRNL is a recently identified secreted protein with emerging functions.This study is to find major cellular source of circulating METRNL and to determine METRNL novel function.Here,we show METRNL is abundant in human and mouse vascular endothelium and released by endothelial cells using endoplasmic reticulum-Golgi apparatus pathway.By creating endothelial cell-specific Metrnl knockout mice,combined with bone marrow transplantation to produce bone marrow-specific deletion of Metrnl,we demonstrate that most of circulating METRNL(approximately 75%)originates from the endothelial cells.Both endothelial and circulating METRNL decrease in atherosclerosis mice and patients.By generating endothelial cell-specific Metrnl knockout in apolipoprotein E-deficient mice,combined with bone marrow-specific deletion of Metrnl in apolipoprotein E-deficient mice,we further demonstrate that endothelial METRNL deficiency accelerates atherosclerosis.Mechanically,endothelial METRNL deficiency causes vascular endothelial dysfunction including vasodilation impairment via reducing eNOS phosphorylation at Ser1177 and inflammation activation via enhancing NFκB pathway,which promotes the susceptibility of atherosclerosis.Exogenous METRNL rescues METRNL deficiency induced endothelial dysfunction.These findings reveal that METRNL is a new endothelial substance not only determining the circulating METRNL level but also regulating endothelial function for vascular health and disease.METRNL is a therapeutic target against endothelial dysfunction and atherosclerosis. | Sili Zheng Zhiyong Li Jie Song Pin Wang Jian Xu Wenjun Hu Yi Shi Qi Qi Zhuwei Miao Yunfeng Guan Chaoyu Miao | 2023 | Acta Pharmaceutica Sinica B2023，13，4： | 2 |
| 5 | FEM Simulation of the Hydrogen Diffusion in X80 Pipeline Steel During Stacking for Slow Cooling显示文摘The influence of temperature on the hydrogen diffusion behavior in X80 pipeline steel during stacking for slow cooling was studied using electrochemical penetration method, the temperature field and the hydrogen diffusion in this pipeline steel during stacking for slow cooling were simulated by ABAQUS finite element method(FEM) software. The results show that in this process there is a reciprocal relationship between the natural logarithm of hydrogen diffusion coefficient and temperature. The cooling rate decreases gradually with the increase of steel plate thickness. The hydrogen content is higher at high temperature(500–400 °C) than that in low temperature region(300–100 °C). The FEM simulation results are consistent with the experimental ones, and the model can be used to predict the hydrogen diffusion behavior in industrial production of X80 pipeline steel. | Zhenyi Huang Qi Shi Fuqiang Chen Yunfeng Shi | 2014 | Acta Metallurgica Sinica(English Letters)2014，27，3： | 1 |
| 6 | Modelling carbon fluxes of different forests by coupling a remote-sensing model with an ecosystem process model显示文摘 | Junbang Wang Jiyuan Liu Mingkui Cao Yunfeng Liu Guirui Yu Guicai Li Shuhua Qi Kerang Li | 2011 | International Journal of Remote Sensing2011，，21： | 1 |
| 7 | Reliability analysis of the diamond saw blades based on ANSYS显示文摘 | Zhang Yunfeng Qi Zhennan Lang Xiying | 2012 | Applied Mechanics and Materials2012，，： | 1 |
| 8 | All-fiber, high power single- frequency linearly polarized ytterbium-doped fiber amplifier 显示文摘 | LIU Chi QI Yunfeng DING Yaqian | 2011 | Chinese Optics Letters2011，9，31： | 1 |
| 9 | All-fiber, high power single- frequency linearly polarized ytterbium-doped fiber amplifier 显示文摘 | LIU Chi QI Yunfeng DING Yaqian | 2011 | Chinese Optics Letters2011，9，31： | 1 |
| 10 | Calculation aided miscibility manipulation enables highly efficient polythiophene:nonfullerene photovoltaic cells显示文摘Polythiophenes,with merits of low cost and high scalability of synthesis,have received growing interest in organic solar cells.To date,the best-performing polythiophene:nonfullerene solar cells exhibit typical power conversion efficiencies (PCEs) of 10%–12%,which is much lower than those employing PM6-and D18-type polymers.This inferior performance is mostly limited by the improper miscibility between polythiophene and acceptors.Efforts on engineering the molecular structure to systematically tune the miscibility are required.With the aid of group contribution calculations,the miscibility of polythiophene:nonfullerene blend system was finely tuned by varying the ratios of siloxane-terminated chains and alkyl chains in ester-substituted polythiophenes through random copolymerization.Based on a series of the polythiophene and nonfullerene acceptors,the detailed analysis of blend miscibility and performance reveals a surprising anticorrelation between the Flory-Huggins interaction parameter (χ_(aa)) and the optimal time of solvent vapor annealing for device performance across these systems.Primarily due to the slightly higher χ_(aa),the blend of PDCBT-Cl-Si5 and ITIC-Th1 results in a record-high PCE of 12.85%in polythiophene:nonfullerene solar cells.The results not only provide a calculation-guided approach for molecular design but also prove that precise control of the miscibility is an effective way to design high-performance polythiophene:nonfullerene blends and beyond. | Qi Wang Miaomiao Li Zhongxiang Peng Nigel Kirby Yunfeng Deng Long Ye Yanhou Geng | 2021 | Science China Chemistry2021，64，3： | 1 |
| 11 | A bivariate rational interpolation and the properties 显示文摘 | Duan Qi Zhang Yunfeng Twizell E H | 2006 | Applied Mathematics and Computation2006，179，： | 1 |
| 12 | Error estimation of a kind of rational spline 显示文摘 | Duan Qi Zhang Huanling Zhang Yunfeng | 2007 | Journal of Computational and Applied Mathematics2007，200，： | 1 |
| 13 | Fabrication of porous scaffolds with protein nanogels显示文摘A novel type of porous scaffold was fabricated from single protein nanogels. The nanogels with single protein as core and crosslinked polymer network as shell were prepared through a two-step procedure including surface acryloylation and in situ radical polymerization. The formation of single protein nanogels was verified by matrix assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometer, transmission electron microscopy (TEM) and dynamic light scattering (DLS) analyses. Subsequently, the porous scaffolds were fabricated through a solvent evaporating process of aqueous nanogel solutions. The porous scaffolds were characterized by Fourier transform infrared (FTIR), scanning electronic microscopy (SEM), atomic force microscopy (AFM), and fluorescence microscopy. Interestingly, the obtained porous nanogel scaffolds presented multi-level porous morphologies with macro and nano scale pores, providing better spaces and microenvironments than normal macro porous scaffolds. Cell proliferation assay of nanogels showed low cytotoxicity. Considering that both the protein species and polymer constitutes can be pre-designed and adjusted, these multi-level porous nanogel scaffolds are promising candidates for tissue culture applications. | ZHU Qi YAN Ming HE Lin ZHU XinYuan LU YunFeng YAN DeYue | 2011 | Science China Chemistry2011，54，6： | 1 |
| 14 | The epidemic status and genetic diversity of 14 highly pathogenic porcine reproductive and respiratory syndrome virus (HP-PRRSV) isolates from China in 2009显示文摘 | Zhi Zhou Jianqiang Ni Zhen Cao Xue Han Yingju Xia Zhanchao Zi Kun Ning Qi Liu Lin Cai Peng Qiu Xiaoyu Deng Dongmei Hu Qian Zhang Yunfeng Fan Jiajun Wu Lilin Wang Miaojie Zhang Xiuling Yu Xinyan Zhai Kegong Tian | 2011 | Veterinary Microbiology2011，，3： | 1 |
| 15 | Error estimation of a kind of rational spline显示文摘 | DUAN QI ZHANG HUANLING ZHANG YUNFENG | | 0，，20： | 1 |
| 16 | Bounded property and point control of a bivariate rational interpolating surface 显示文摘 | Duan Qi Zhang Huanling Zhang Yunfeng | 2006 | Computers and Mathematics with Applications2006，52，： | 1 |
| 17 | A bivariate rational interpolation and the properties 显示文摘 | Duan Qi Zhang Yunfeng Twizell E H | 2006 | Applied Mathematics and Computation2006，179，： | 1 |
| 18 | Convexity control of a bivariate rational interpolating spline surfaces 显示文摘 | Zhang Yunfeng Duan Qi Twizell E H | 2007 | Computers and Graphics2007，31，5： | 1 |
| 19 | Shape control of a bivariate interpolating spline surface 显示文摘 | Duan Qi Bao Fangxun Zhang Yunfeng | 2008 | International Journal of Computer Mathematics2008，85，5： | 1 |
| 20 | Error estimation of a kind of rational spline 显示文摘 | Duan Qi Zhang Huanling Zhang Yunfeng | 2007 | Journal of Computational and Applied Mathematics2007，200，： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员