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1Gold nanorods core/AgPt alloy nanodots shell: A novel potent antibacterial nanostructure显示文摘根据银 nanoparticles (Ag NP ) 的当前的问题以抗菌剂性能,我们与取向附生地作为一个潜在的抗菌剂代理人在金 nanorods (Au@PtAg NR ) 上种的 AgPt 合金 nanodots 设计了新奇 trimetallic 核心 / 壳 nanostructure。两 Escherichia coli (E。coli ) 并且葡萄球菌 aureus (S。aureus ) 被学习。抗菌剂活动展出明显的作文依赖。在在合金壳增加 Ag 部分直到 80% 以后,抗菌剂活动逐渐地增加,表明一个灵活方法调节这项活动。在 80% Ag,抗菌剂活动比纯 Ag 壳的好。改进抗菌剂能力主要由于点形态学在壳表面上源于银的高暴露。当为基于 Ag 的 nanomaterials 保留高化学的稳定性时,我们因此证明形成合金是改进抗菌剂活动的一个有效方法。而且,由于悦耳的局部性的表面 plasmonic 反应在在红外线附近(NIR ) 光谱区域,对把 lightsuch 用作杀死的 photothermal 和 phototriggered 银离子 releaseis 的抗菌剂活动的另外的控制期望。作为示范,高度提高了抗菌剂活动被利用 nanostructures 的 NIR photothermal 效果显示出。我们的结果显示如此的定制的 nanostructures 将在对细菌的未来战斗发现一个角色,包括 multidrug 抵抗的增加的严厉的挑战。Xiaona Hu Yuyun Zhao Zhijian Hu Aditya Saran Shuai Hou Tao Wen Wenqi Liu Yinglu Ji Xingyu Jiang Xiaochun Wu 2013Nano Research2013,6,11:9
2Effects of rotational speed and fill level on particle mixing in a stirred tank with different impellers显示文摘The particle mixing was studied in a cylindrical stirred tank with elliptical dished bottom by experiments and simulations.The impeller types used were double helical ribbon(HR) + bottom HR,pitched blade ribbon + bottom HR,inner and outer HR + bottom HR,and pitched blade ribbon + Pfaudler + bottom HR labeled as impellers Ⅰ to Ⅳ,respectively.The quantitative correlations among the rotational speed,fill level and power consumption for impeller Ⅰ and impeller Ⅱ were obtained by experiments to validate the discrete element method(DEM) simulations.The particle mixing at different operating conditions was simulated via DEM simulations to calculate the mixing index using the Lacey method,which is a statistical method to provide a mathematical understanding of the mixing state in a binary mixture.The simulation results reveal that as the rotational speed increases,the final mixing index increases,and as the fill level increases,the final mixing index decreases.At the same operating conditions,impeller Ⅲ is the optimal combination,which provides the highest mixing index at the same revolutions.Yuyun Bao Yu Lu Ziqi Cai Zhengming Gao 2018Chinese Journal of Chemical Engineering2018,26,6:7
3Discrete element method study of effects of the impeller configuration and operating conditions on particle mixing in a cylindrical mixer显示文摘We employed the discrete element method to study the effects of the impeller configuration(i.e.,blade diameter,inclination angle,and blade number),rotational speed,and fill level on the flow and mixing of particles in a cylindrical mixer equipped with flat and inclined blades.The coefficient of rolling friction,coefficient of static friction,and coefficient of restitution were experimentally determined before the simulation,and simulation results of the torque and surface particle distribution were validated in experiments,particularly when using a true Young's modulus in the discrete element method.The performance of the mixer was assessed using the Lacey mixing index.The input work per unit volume was used to represent the mixing efficiency.The circumferential velocity and axial diffusion coefficient of the particles were quantitatively analyzed to reveal the effect of particle flow on the mixing.It was found that the mixing performance and efficiency of a three-blade mixer are better than those of two-and four-blade mixers.For pitched blades,a three-fiat-blade mixer has better mixing performance than a three-45°-blade own-pumping or a three-45°-blade up-pumping mixer,but the mixing efficiency of the three-45°-blade up-pumping mixer is the best among these three mixers.As the rotational speed increases,the mixing performance improves but the mixing efficiency hardly changes.When the fill level is 0.4 times the cylinder diameter,the 160D two-flat-blade mixer has good mixing performance with high mixing efficiency.The circumferential velocity has the greatest effect on mixing performance for side-by-side initial loading.Yuyun Bao Tianchi Li Dengfei Wang Ziqi Cai Zhengming Gao 2020Particuology2020,18,2:6
4Hydrodynamic Behavior of a Single Bubble Rising in Viscous Liquids显示文摘The rising behavior of single bubbles has been investigated in six systems with different viscosity and Morton number(Mo) from 3.21×10-11 to 163. Bubbles with maximum equivalent diameter of up to 16 mm were investigated. The bubble Reynolds number(Re) ranged from 0.02 to 1200 covering 3 regimes in which two func-tions are obtained relating the drag coefficient,CD,with Re and Mo. It has been found that in the high Reynolds number regime the drag coefficient increases until the Reynolds number of about 1200. The classic expression of Jamialahmadi(1994) is improved and extended to high viscosity liquids. A new relationship for the aspect ratio of deformed bubbles in terms of Re,the Etvs number and Mo,applicable to a wide range of system properties,espe-cially in high viscosity liquids,is also suggested.CAI Ziqi BAO Yuyun GAO Zhengming 2010Chinese Journal of Chemical Engineering2010,18,6:6
5Mass transfer in gas–liquid stirred reactor with various triple-impeller combinations显示文摘The gassed power demand and volumetric mass transfer coefficient(kLa) were investigated in a fully baffled,dished-base stirred vessel with a diameter of 0.30 m agitated by five triple-impeller combinations. Six types of impellers(six-half-elliptical-blade disk turbine(HEDT), four-wide-blade hydrofoil impeller(WH) pumping down(D) and pumping up(U), parabolic-blade disk turbine(PDT), and CBY narrow blade(N) and wide blade(W)) were used to form five combinations identified by PDT + 2CBYN, PDT + 2CBYW, PDT + 2WHD,HEDT + 2WHDand HEDT + 2WHU, respectively. The results show that the relative power demand of HEDT + 2WHUis higher than that of other four impeller combinations under all operating conditions. At low superficial gas velocity(uG), kLa differences among impeller combinations are not obvious. However,when uG is high, PDT + 2WHDshows the best mass transfer performance and HEDT + 2WHUshows the worst mass transfer performance under all operating conditions. At high uGand a given power input, the impeller combinations with high agitation speed and big projection cross-sectional area lead to relatively high values of kLa. Based on the experimental data, the regressed correlations of gassed power number with Froude number and gas flow number, and kLa with power consumption and superficial gas velocity are obtained for five different impeller combinations, which could be used as guidance for industrial design.Jinjin Zhang Zhengming Gao Yating Cai Ziqi Cai Jie Yang Yuyun Bao 2016Chinese Journal of Chemical Engineering2016,24,6:5
6Facile Synthesis of Mo2C Nanocrystals Embedded in Nanopo- rous Carbon Network for Efficient Hydrogen Evolution显示文摘为综合探索灵巧、容易可伸缩的方法地球丰富、划算、有效的氢进化反应(她的) electrocatalysts 作为一个干净、持续的精力搬运人为氢的大量生产是必要的。我们这里报导简单策略生产瞬间 2 在碳网络嵌入的 C nanocrystals (瞬间 2 C@C ) 由铵 molybdate 和 polyvinylpyrrolidone (PVP ) 的直接热分解。PVP 能有效地被用作单身的来源形成碳化物和碳网络,这被发现。有 PVP 的转变金属的长聚合物链和协调能力使形成连接的多孔的碳网络和分散得好的瞬间 2 在几纳米的 C nanocrystals。PVP 的碳化不仅在原处有效地阻止瞬间 2 C nanocrystals 在他们的形成期间,而且提供传导性的多孔的矩阵。作为结果,瞬间 2 C@C 合成展览为她的优异 electrocatalytic 性能,能从很多的小瞬间 2Yuyun Chen Yun Zhang Yuling Ma Tang Tang Zhihui Dai Jinsong Hu Lijun Wan 2017Chinese Journal of Chemistry2017,35,6:4
7Corrosion engineering boosting bulk Fe_(50)Mn_(30)Co_(10)Cr_(10)high-entropy alloy as high-efficient alkaline oxygen evolution reaction electrocatalyst显示文摘Oxygen evolution reaction(OER)is a critical process in electrocatalytic water splitting.However,the development of low-cost,highly efficient OER electrocatalysts by a simple method that can be used for industrial application on a large scale is still a huge challenge.Recently,high entropy alloy(HEA)has acquired extensive attention,which may provide answers to the current dilemma.Here,we report bulk Fe_(50)Mn_(30)Co_(10)Cr_(10),which is prepared by 3D printing on a large scale,as electrocatalyst for OER with high catalytic performance.Especially,an easy approach,corrosion engineering,is adopted for the first time to build an active layer of honeycomb nanostructures on its surface,leading to ultrahigh OER performance with an overpotential of 247 mV to achieve a current density of 10 mA cm^(-2),a low Tafel slope of 63 mV dec^(-1),and excellent stability up to 60 h at 100 mA cm^(-2)in 1 M KOH.The excellent catalytic activity mainly originates from:(1)the binder-free self-supported honeycomb nanostructures and multi-component hydroxides,which improve intrinsic catalytic activity,provide rich active sites,and reduce interfacial resistance;and(2)the diverse valence states for multiple active sites to enhance the OER kinetics.Our findings show that corrosion engineering is a novel strategy to improve the bulk HEA catalytic performance.We expect that this work would open up a new avenue to fabricate large-scale HEA electrocatalysts by 3D printing and corrosion engineering for industrial applications.Pengfei Zhou Dong Liu Yuyun Chen Mingpeng Chen Yunxiao Liu Shi Chen Chi Tat Kwok Yuxin Tang Shuangpeng Wang Hui Pan 2022Journal of Materials Science & Technology2022,,14:3
8Effect of interleukin-33 on Th1/Th2 cytokine ratio in peripheral lymphocytes in asthmatic mice显示文摘He Xinliang Wu Wei Lu Yan Guo Yali Hu Chaoliang Huang Yuyun Xu Yuzu Xie Jungang Zhao Jianping 2014Chinese Medical Journal2014,,8:2
9Effects of different amino acid levels and a carvacrol-thymol blend on growth performance and intestinal health of weaned pigs显示文摘Background:Over the past years,antibiotic growth promoter had been restricted in animal husbandry production in many countries because of antimicrobial resistance and foodborne antibiotic residues.However,the problems of poor intestinal health and low growth efficiency of piglets have not been solved completely in an antibiotic-free diet,and it is urgent to explore alternatives to antimicrobial growth promoters.Methods:Here,a total of 532 weaned pigs were assigned to one of 4 treatments,the low amino acid(AA)level diet(d 1 to d 14 is 1.35%,d 15 to d 42 is 1.25%)(Low AA),the low AA level diet supplementation with a carvacrol-thymol blend(50 mg carvacrol and 50 mg thymol/kg of diet)(CB)(Low AA+CB),the high AA level diet(d 1 to d 14 is 1.50%,d 15 to d 42 is 1.40%)(High AA),and the high AA level diet supplementation with a CB(High AA+CB),respectively.Then we measured growth performance and intestinal health indicators of weaned pigs.Results:Results showed that high AA level significantly reduced plasma urea nitrogen,plasma Interleukin-6(IL-6)and fecal lipocalin-2 contents(P<0.05),significantly increased the relative abundance of fecal Lactobacillus and Enterococcus,and had a trend to increase the fecal secretory immunoglobulin A(sIgA)and mucin 2(MUC 2)contents(P<0.05)in piglets,thereby alleviating the diarrhea of piglets and reducing the feed conversion ratio(FCR)of piglets during d 1~14 after weaning.Dietary supplementation with CB significantly increased the activity of plasma antioxidant enzymes T-SOD and GSH-px(P<0.05),while significantly reduced plasma malondialdehyde(MDA),plasma interleukin-1β(IL-1β),plasma endotoxin and D-lactic acid contents(P<0.05).Meanwhile,CB significantly decreased fecal lipocalin-2 contents and the abundance of fecal Escherichia coli(P<0.05).Thus,we hypothesis that dietary supplementation with CB significantly increased the average daily gain(ADG)of piglets(P<0.05)during d 1~14 after weaning through promoting intestinal health.Conclusion:These results suggest that high AA level and dietary supplementation with CB improved the growth performance of weaned pigs in an antibiotic-free diet by improving AA metabolism and intestinal antioxidant capacity.Yanan Wang Zhipeng Yang Yuanfei Zhou Jiajian Tan Haiqing Sun Defa Sun Yuyun Mu Jian Peng Hongkui Wei 2022Journal of Animal Science and Biotechnology2022,13,5:2
10Defect passivation by nontoxic biomaterial yields 21% efficiency perovskite solar cells显示文摘Defect passivation is one of the most important strategies to boost both the efficiency and stability of perovskite solar cells(PSCs).Here,nontoxic and sustainable forest-based biomaterial,betulin,is first introduced into perovskites.The experiments and calculations reveal that betulin can effectively passivate the uncoordinated lead ions in perovskites via sharing the lone pair electrons of hydroxyl group,promoting charge transport.As a result,the power conversion efficiencies of the p-i-n planar PSCs remarkably increase from 19.14%to 21.15%,with the improvement of other parameters.The hydrogen bonds of betulin lock methylamine and halogen ions along the grain boundaries and on the film surface and thus suppress ion migration,further stabilizing perovskite crystal structures.These positive effects enable the PSCs to maintain 90%of the initial efficiency after 30 days in ambient air with 60%±5%relative humidity,75%after 300 h aging at 85℃,and 55%after 250 h light soaking,respectively.This work opens a new pathway for using nontoxic and low-cost biomaterials from forest to make highly efficient and stable PSCs.Shaobing Xiong Tianyu Hao Yuyun Sun Jianming Yang Ruru Ma Jiulong Wang Shijing Gong Xianjie Liu Liming Ding Mats Fahlman Qinye Bao 2021Journal of Energy Chemistry2021,30,4:2
11Ultrasmall AU10 clusters anchored on pyramid-capped rectangular TiO2 for olefin oxidation显示文摘Ultrasmall Au 10 簇作为一座充电水库有唯一的电子结构和罐头行为捐赠电子或接受费用。这为催化作用是特别地重要的,自从它越过在金种类和氧化物底层之间的接口导致灵巧的费用转移。在催化氧化上决定 Au 10 的电子、结构的效果,一个 TiO 2 费用搬运人为石蜡氧化被选择为底层到锚 Au 10 。在 TiO 2-RP 上支持的 Au 10(RP = 盖住金字塔的圆柱的结构) 展出优异催化活动到 Au 10/TiO2 nanotubes 和 Au 10/P25。另外,支持的 Au 10 簇比支持的 Au 20, Au 144 簇,和 5 nm Au 产生了更高的活动 nanocrystals。Au 10/TiO2-RP 的优异催化能力从 Au 10/TiO2-RP 接口的控告 / 解除效果产生,它有效地在 Au 10, 的终端位置在充满电子的金原子上改进活跃的氧种类的形成并且在 Au 10 的电子缺乏的金原子上支持石蜡 C=C 契约的激活。Lixiong Li Shuangshuang Huang Jianjun Song Nating Yang Jingwei Liu Yuyun Chen Yuhan Sun Rongchao Jin Yan Zhu 2016Nano Research2016,9,4:2
12Monitoring dioxins and PCBs in eggs as sensitive indicators for environmental pollution and global contaminated sites and recommendations for reducing and controlling releases and exposure显示文摘This review compiles information on PCDD/F-and PCB-contaminated eggs from 20 years of global egg monitoring around emission sources in four continents conducted by the International Pollutants Elimination Network(IPEN)and Arnika as well as a compilation of data from scientific literature.IPEN monitored 127 pooled egg samples including samples from 113 chicken flocks at potential PCDD/F-and PCB-contaminated sites around priority sources listed in the Stockholm Convention(e.g.waste incinerators,metal industries,cement plants,and open burning).99(88%)of pooled egg samples were above the EU maximum limits for PCDD/Fs(2.5 pg PCDD/F-TEQ/g fat)or the sum of PCDD/Fs and dioxinlike PCBs(5 pg PCDD/F-PCB-TEQ/g fat).Children consuming such eggs exceed the tolerable weekly intake(TWI).This demonstrates that close to 90%of these areas were not safe for the production of free-range eggs.Sixteen out of the 113 egg samples(14%)were contaminated above 50 pg TEQ/g fat and exceeded the EU maximum limit more than 10 times.From the 26 pooled egg samples around incinerators 24(92%)exceeded the limit with a mean of 43.1 pg TEQ/g fat(2.6e234 pg TEQ/g).All 21 egg samples around metal industries(4.4e112.6 pg TEQ/g fat)were above limits with mean concentration of 26.0 pg TEQ/g fat.Also all 7 egg samples measured at e-waste recycling sites were above limits(mean 308 pg TEQ/g fat).In 58(51%)pooled egg samples the PCB-TEQ was above 5 pg TEQ/g fat exceeding the EU maximum limit with dioxin-like PCBs alone.This highlights the role of commercial PCBs for global contamination with dioxin-like compounds.It was discovered that around metal industries,shredder plants,open burning sites of e-waste and dump sites,a high share of contamination was caused by dl-PCBs.This clearly shows severe PCB release from the end-of-life management of PCB-containing equipment in developing countries.Also highly contaminated eggs were found at many sites where plastic was incinerated.The highest contaminated egg sample ever measured came from an e-waste site in Ghana and had 856 pg TEQ/g fat plus 300 pg TEQ from brominated dioxins(PBDD/Fs).Other extreme PCDD/F contaminations of eggs were found at a chlor-alkali site(514 pg TEQ/g fat),Agent Orange contaminated areas in Vietnam(490,249 and 246 pg TEQ/g fat)and e-waste sites(568 and 520 pg TEQ/g fat).Where DR CALUX®bioassay revealed higher TEQ compared to measured PCDD/F-PCB-TEQ in IPEN studies,polybrominated PBDD/F were also measured and detected up to 300 pg TEQ/g fat at e-waste sites.One positive outcome from the IPEN studies is that all 10 pooled supermarket eggs in developing countries were below regulatory limit.Policy recommendations are made including:a systematic assessment of areas around PCDD/Fs and PCBs sources;measures for reduction of exposures of populations;urgent control of emission sources including PCB equipment,the open burning of plastic,and the use of plastic as fuel in boilers/incinerators in developing countries without air pollution control.Furthermore,soil limits need to be re-assessed and lowered for free-range poultry.Jindrich Petrlik Lee Bell Joe DiGangi Serge Molly Allo'o Allo'o Gilbert Kuepouo Griffins Ochieng Ochola Valeriya Grechko Nikola Jelinek Jitka Strakova Martin Skalsky Yuyun Ismawati Drwiega Jonathan N.Hogarh Eric Akortia Sam Adu-Kumi Akarapon Teebthaisong Maria Carcamo Bjorn Beeler Peter Behnisch Claudia Baitinger Christine Herold Roland Weber 2022Emerging Contaminants2022,8,1:2
13Restoration processes of pollution zones in Hanjiang River显示文摘RestorationprocessesofpollutionzonesinHanjiangRiver¥ShenYunfen;TanYuyun;FengWeisong;GuManru(InstituteofHydrobiology,ChineseAc...Shen Yunfen Tan Yuyun Feng Weisong Gu Manru (Institute of Hydrobiology, Chinese Academy of Sciences, Wuchang 430072, China) He Chengying (Environmental Protection Station of Xiantao City ,China) Li Aiguo (Environmental Protection Station of Xiangfan Ci 1996Journal of Environmental Sciences1996,8,2:2
14显示文摘Zhao Yuyun Tian Yue Cui Yan 2010J Am Chem Soc2010,132,12:1
15Microalbuminuria independently predicts all-cause and cardiovascular mortality in a British population: The European Prospective Investigation into Cancer in Norfolk (EPIC-Norfolk) population study 显示文摘Yuyun MF Khaw KT Luben R 2004lnt J Epidemiol2004,33,1:1
16Microalbuminuria independently predicts all-cause and cardiovascular mortality in a British population:the european prospective investigation into cancer in norfolk (EPIC-Norfolk) population study显示文摘Yuyun MF Khaw KF Luben R 2004Int J Epidemiol2004,33,1:1
17Microalbuminuria independently predicts all-cause and cardiovascular mortality in a British population:the European Prospective Investigation into Cancer in Norfolk (EPIC-Norfolk) population study显示文摘Yuyun MF Khaw KT Luben R 2004Int J Epidemiol2004,33,1:1
18Nanopolyphenol rejuvenates microglial surveillance of multiple misfolded proteins through metabolic reprogramming显示文摘Microglial surveillance plays an essential role in clearing misfolded proteins such as amyloid-beta,tau,andα-synuclein aggregates in neurodegenerative diseases.However,due to the complex structure and ambiguous pathogenic species of the misfolded proteins,a universal approach to remove the misfolded proteins remains unavailable.Here,we found that a polyphenol,α-mangostin,reprogrammed metabolism in the disease-associated microglia through shifting glycolysis to oxidative phosphorylation,which holistically rejuvenated microglial surveillance capacity to enhance microglial phagocytosis and autophagy-mediated degradation of multiple misfolded proteins.Nanoformulation ofα-mangostin efficiently deliveredα-mangostin to microglia,relieved the reactive status and rejuvenated the misfolded-proteins clearance capacity of microglia,which thus impressively relieved the neuropathological changes in both Alzheimer’s disease and Parkinson’s disease model mice.These findings provide direct evidences for the concept of rejuvenating microglial surveillance of multiple misfolded proteins through metabolic reprogramming,and demonstrate nanoformulatedα-mangostin as a potential and universal therapy against neurodegenerative diseases.Dayuan Wang Xiao Gu Xinyi Ma Jun Chen Qizhi Zhang Zhihua Yu Juan Li Meng Hu Xiaofang Tan Yuyun Tang Jianrong Xu Minjun Xu Qingxiang Song Huahua Song Gan Jiang Zaiming Tang Xiaoling Gao Hongzhuan Chen 2023Acta Pharmaceutica Sinica B2023,13,2:1
19Plasma cortisol and prognosis of patients with acute myocardial infarction显示文摘Jufla SK Yuyun MF Quinn PA 2014J Cardiovasc Med2014,15,1:1
20The Weakening Relationship between ENSO and the South China Sea Summer Monsoon Onset in Recent Decades显示文摘The El Ni?o-Southern Oscillation(ENSO) is traditionally regarded as the most important factor modulating the interannual variation of the South China Sea summer monsoon(SCSSM) onset. A preceding El Ni?o(La Ni?a) usually tends to be followed by a delayed(an advanced) monsoon onset. However, the close relationship between ENSO and SCSSM onset breaks down after the early-2000 s, making seasonal prediction very difficult in recent years. Three possible perspectives have been proposed to explain the weakening linkage between ENSO and SCSSM onset, including interdecadal change of the ENSO teleconnection(i.e., the Walker circulation), interferences of other interannual variability(i.e., the Victoria mode), and disturbances on intraseasonal time scales(i.e., the quasi-biweekly oscillation). By comparing the epochs of 1979–2001 and 2002–19, it is found that the anomalous tropical Walker circulation generated by ENSO is much weaker in the latter epoch and thus cannot deliver the ENSO signal to the SCSSM onset. Besides, in recent years, the SCSSM onset is more closely linked to extratropical factors like the Victoria mode, and thus its linkage with ENSO becomes weaker. In addition to these interannual variabilities, the intraseasonal oscillations like the quasi-biweekly oscillation can disrupt the slow-varying seasonal march modulated by ENSO. Thus, the amplified quasi-biweekly oscillation may also contribute to the weakening relationship after the early-2000 s. Given the broken relationship between ENSO and SCSSM onset, the extratropical factors should be considered in order to make skillful seasonal predictions of SCSSM onset, and more attention should be paid to the extended-range forecast based on intraseasonal oscillations.Peng HU Wen CHEN Shangfeng CHEN Lin WANG Yuyun LIU 2022Advances in Atmospheric Sciences2022,39,3:1
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