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| 1 | Using Hourly Measurements to Explore the Role of Secondary Inorganic Aerosol in PM_(2.5)during Haze and Fog in Hangzhou, China显示文摘This paper explores the role of the secondary inorganic aerosol(SIA) species ammonium, NH+4, nitrate, NO-3, and sulfate,SO2-4, during haze and fog events using hourly mass concentrations of PM2.5measured at a suburban site in Hangzhou,China. A total of 546 samples were collected between 1 April and 8 May 2012. The samples were analyzed and classified as clear, haze or fog depending on visibility and relative humidity(RH). The contribution of SIA species to PM2.5mass increased to ~50% during haze and fog. The mass contribution of nitrate to PM2.5increased from 11% during clear to 20%during haze episodes. Nitrate mass exceeded sulfate mass during haze, while near equal concentrations were observed during fog episodes. The role of RH on the correlation between concentrations of SIA and visibility was examined, with optimal correlation at 60%–70% RH. The total acidity during clear, haze and fog periods was 42.38, 48.38 and 45.51 nmol m-3,respectively, indicating that sulfate, nitrate and chloride were not neutralized by ammonium during any period. The nitrate to sulfate molar ratio, as a function of the ammonium to sulfate molar ratio, indicated that nitrate formation during fog started at a higher ammonium to sulfate molar ratio compared to clear and haze periods. During haze and fog, the nitrate oxidation ratio increased by a factor of 1.6–1.7, while the sulfur oxidation ratio increased by a factor of 1.2–1.5, indicating that both gaseous NO2 and SO2were involved in the reduced visibility. | Roeland Cornelis JANSEN SHI Yang CHEN Jianmin HU YunJie XU Chang HONG Shengmao LI Jiao ZHANG Min | 2014 | Advances in Atmospheric Sciences2014，31，6： | 15 |
| 2 | Variation of PM_(2.5) concentration in Hangzhou,China显示文摘这观察研究在不同天气系统和污染类型下面对 PM10 集中调查 PM2.5 集中和它的比率的变化。学习用在在一样的时期在在 2006 和 2008 之间并且用天气信息的大城市的区域附近监视车站的七周围的空气质量收集的数据在华东的长江三角洲上在 Hangzhou 被进行。影响城市的九个占优势的天气系统通过天气从 1996 ~ 2006 制定的 11 年的表面和上面的空气的小心的分析被分类。各观察的白天然后被分到九个天气系统之一。PM2.5 集中为不同天气系统极大地变化了,这被发现,与与在 0.091 mg/m3 的 post-cold-frontal 系统联系的最高的 PM2.5 集中和有在 0.038 mg/m3 的 easterlies 系统的最低 PM2.5 集中,尽管 PM2.5/PM10 比率为所有系统超过 0.5 一致地留下了。当 easterlies 系统夏天是更多时, post-cold-frontal 系统典型地发生在秋天和冬季现象。在污染的所有类型之中, 0.117 mg/m3 的最高的 PM2.5 集中与大规模连续污染事件与一致,建议这类污染对第二等的微粒事的形成更导致。PM2.5/PM10 的比率在非污染天和所有污染类型内超过 0.5,但是当比率减少了到 0.3 或少些时,在灰尘的影响下面的下暴雨。这研究的结果能被用来基于天气系统和污染类型开发 PM2.5 集中的一个基本预兆的模型。 | Shengmao Hong Li Jiao Wanli Ma | 2013 | Particuology2013，11，1： | 6 |
| 3 | Synthesis of water-soluble Cu nanoparticles and evaluation of their tribological properties and thermal conductivity as a water-based additive显示文摘Efficient and sustainable use of water-based lubricants is essential for energy efficiency.Therefore,the use of water-lubricated mechanical systems instead of conventional oil lubricants is extremely attractive from the viewpoint of resource conservation.In this study,water-soluble Cu nanoparticles of size approximately 3 nm were prepared at room temperature(around 25 °C) via in-situ surface modification.The tribological behavior of the as-synthesized Cu nanoparticles as an additive in distilled water was evaluated using a universal micro-tribotester.The results show that the as-synthesized Cu nanoparticles,as a water-based lubricant additive,can significantly improve the tribological properties of distilled water.In particular,the lowest friction coefficient of 0.06 was obtained via lubrication with a concentration of 0.6 wt% of Cu nanoparticles in distilled water,which is a reduction of 80.6% compared with that obtained via lubrication with distilled water alone.It is considered that some Cu nanoparticles entered the contact area of the friction pairs to form a complex lubricating film and prevent direct contact of the friction pairs.Furthermore,some Cu nanoparticles in the solution accelerate the heat transfer process,which also results in good tribological properties. | Junhua ZHAO Guangbin YANG Chunli ZHANG Yujuan ZHANG Shengmao ZHANG Pingyu ZHANG | 2019 | Friction2019，7，3： | 6 |
| 4 | Association between glucose transporter 1 rs841853 polymorphism and type 2 diabetes mellitus risk may be population specific (葡萄糖转移酶1的rs841853基因多态性与2型糖尿发生风险的关系可能具有人群特异性)显示文摘 | Bing Du Shengmao Liu Chengji Cui Songyan Wang Wenpeng Cui | 2013 | Journal of Diabetes2013，，3： | 6 |
| 5 | Optimal design of near-Earth asteroid sample-return trajectories in the Sun–Earth–Moon system显示文摘In the 6th edition of the Chinese Space Trajectory Design Competition held in 2014, a near-Earth asteroid sample-return trajectory design problem was released, in which the motion of the spacecraft is modeled in multi-body dynamics, considering the gravitational forces of the Sun,Earth, and Moon. It is proposed that an electric-propulsion spacecraft initially parking in a circular 200-km-altitude low Earth orbit is expected to rendezvous with an asteroid and carry as much sample as possible back to the Earth in a10-year time frame. The team from the Technology and Engineering Center for Space Utilization, Chinese Academy of Sciences has reported a solution with an asteroid sample mass of 328 tons, which is ranked first in the competition.In this article, we will present our design and optimization methods, primarily including overall analysis, target selection, escape from and capture by the Earth–Moon system,and optimization of impulsive and low-thrust trajectories that are modeled in multi-body dynamics. The orbital resonance concept and lunar gravity assists are considered key techniques employed for trajectory design. The reported solution, preliminarily revealing the feasibility of returning a hundreds-of-tons asteroid or asteroid sample, envisions future space missions relating to near-Earth asteroid exploration. | Shengmao He Zhengfan Zhu Chao Peng Jian Ma Xiaolong Zhu Yang Gao | 2016 | Acta Mechanica Sinica2016，32，4： | 5 |
| 6 | The Combined Effect of Plastic Particles Size and Concentration on Rotifers’ (Brachionus plicatilis) Performance显示文摘The presence of microplastics in aquatic ecosystems is of increasing global concern.Nano-sized plastics,in particular,can penetrate the cell membrane and cause biological death.Our study evaluated the combined impacts of several polystyrene mi-crospheres’sizes and nominal concentrations on the overall performance changes of Brachionus plicatilis.Experimental animals were exposed to three microplastic sizes(0.08,0.5 and 6μm)and five nominal concentrations(0,0.5,2,8,32μg mL−1)for 20 d.Our results showed that the toxicological effect of particle size on rotifers did not significantly depend on the nominal concentration.The interaction between the nominal concentration and size occurred only for body length and lorica width.Specifically,high nominal concentrations of microplastics that were close to nanometer size significantly impaired the overall vitality of rotifers,embodied in shortage of body type,delay in the arrival of maturity,reduction in the cumulative number of neonates,and the advance of the death process.In comparison,fair-sized size(0.5 and 6μm)displayed non-significant damage except for individual groups.Most notably,the net reproductive yield was only a third of what it was in the original environment,implying that there was not much fertility left.Besides,with the development of rotifers,the adverse effects of polystyrene microsphere drive had become more and more serious. | SUI Yanming WANG Senyang MOHSEN Mohamed ZHANG Longsheng SHEN Mengyan LIU Zhiquan NGUYEN Haidang ZHANG Shengmao LI Kaixing LV Linlan DONG Xuexing | 2022 | Journal of Ocean University of China2022，21，2： | 3 |
| 7 | Effects of magnetic ionic liquid as a lubricant on the friction and wear behavior of a steel-steel sliding contact under elevated temperatures显示文摘A magnetic ionic liquid(abridged as MIL)[C_(6)mim]_(5)[Dy(SCN)_(8)]was prepared and used as the magnetic lubricant of a steel-steel sliding pair.The tribological properties of the as-prepared MIL were evaluated with a commercially obtained magnetic fluid lubricant(abridged as MF;the mixture of dioctyl sebacate and Fe_(3)O_(4),denoted as DIOS-Fe_3O_4)as a control.The lubrication mechanisms of the two types of magnetic lubricants were discussed in relation to worn surface analyses by SEM-EDS,XPS,and profilometry,as well as measurement of the electric contact resistance of the rubbed steel surfaces.The results revealed that the MIL exhibits better friction-reducing and antiwear performances than the as-received MF under varying test temperatures and loads.This is because the MIL participates in tribochemical reactions during the sliding process,and forms a boundary lubrication film composed of Dy_(2)O_(3),FeS,FeSO_(4),nitrogen-containing organics,and thioether on the rubbed disk surface,thereby reducing the friction and wear of the frictional pair.However,the MF is unable to form a lubricating film on the surface of the rubbed steel at 25°C,though it can form a boundary film consisting of Fe_(3)O_(4) and a small amount of organics under high temperature.Furthermore,the excessive Fe_(3)O_(4) particulates that accumulate in the sliding zone may lead to enhanced abrasive wear of the sliding pair. | Jiajia JIA Guangbin YANG Chunli ZHANG Shengmao ZHANG Yujuan ZHANG Pingyu ZHANG | 2021 | Friction2021，9，1： | 2 |
| 8 | Numerical simulation of icing effects on static flow field around blade airfoil for vertical axis wind turbine显示文摘Icing on blade surface of the straight-bladed vertical axis wind turbine(SB-VAWT)set in cold regions is a serious problem.To study the performance effects of icing on SB-VAWT,numerical simulations were carried out on the ice accretion on NACA 0015 airfoil which was always used for blade airfoil of SB-VAWT by CFD methods based on 2D steady incompressible N-S Equation.The morphology and procedure of icing on blade airfoil were obtained under different wind speeds,attack angles of blade and water flow flux in wind.The static flow fields,especially the static pressure fields around blade airfoil with or without icing on it were computed.The aerodynamic characteristics including the lift and drag force coefficients of blade airfoil were also calculated.The results indicated that icing caused the static pressure field changed greatly and led to the increasing of drag force and reducing the aerodynamic performance. | Li Yan Chi Yuan Han Yongjun Li Shengmao Tagawa Kotaro | 2011 | International Journal of Agricultural and Biological Engineering2011，4，3： | 2 |
| 9 | Hygroscopicity of ambient submicron particles in urban Hangzhou,China显示文摘In this study,hygroscopicity of size-segregated ambient submicron particles in urban Hangzhou was studied from 28th December 2009 to 18th January 2010,using a hygroscopicity-tandem differential mobility analyzer(H-TDMA).The submicron particles in Hangzhou showed a minor hygroscopic growth at 73%relative humidity(RH),and then grew significantly between 77%and 82%RH.Monomodal distribution accounted for 90%for 30 nm particles,17%for 50 nm particles,and less than 7%for particles larger than 50 nm at 82%RH.Deconvolution of the bimodal distribution indicated a less hygroscopic group and a more hygroscopic group,with the fraction of the more hygroscopic group increasing with the initial dry particle size and then remaining almost constant for accumulation mode particles.Our results imply that submicron particles in urban Hangzhou were almost entirely externally mixed,and the hygroscopic properties of ambient particles in urban Hangzhou were mainly a function of their size and chemical composition. | Jiachen ZHANG Lin WANG Jianmin CHEN Shengmao FENG Jiandong SHEN Li JIAO | 2011 | Frontiers of Environmental Science & Engineering2011，5，3： | 2 |
| 10 | Stability in a cubic predator-prey diffusive system显示文摘 | Cao Huaihuo Fu Shengmao | 2008 | Journal of Lanzhou university(Natural sciences)2008，44，4： | 1 |
| 11 | On global solutions of competitor-competitor-mutualist model with cross-diffusion显示文摘 | Fu Shengmao Gao Haiyan Cui Shangbin | 2008 | Aeta Mathematiea Siniea Chinese Series2008，51，1： | 1 |
| 12 | Torque Characteris- tics Simulation on Small Scale Combined Type Vertical Axis Wind Tur- bine 显示文摘 | Feng Fang Li Shengmao Li Yan | 2012 | Physics Procedia2012，24，： | 1 |
| 13 | Hodge integrals with one λ-class显示文摘Hodge integrals over moduli space of stable curves play an important roles in understanding the topological properties of moduli space.ELSV formula connects the Hodge integrals with Hurwitz numbers,and the generating function of Hurwitz numbers satisfies the cut-and-join equation.Therefore,it is natural to consider how to use the cut-and-join equation for Hurwitz numbers to compute Hodge integrals which appear in ELSV formula.In this paper,at first,we will review the method introduced in Goulden et al.'s paper to get the λ g conjecture for Hodge integral.Through some variables transformation,the generating function of Hurwitz number becomes a symmetric polynomial which satisfies a symmetrized cut-and-join equation.By comparing the coefficients of the lowest degree term of both sides in this equation,we can get the λ g conjecture.Then,in a similar way,we obtain our main result in this paper:a recursive formula for Hodge integral of type contains only one λ g 1-class.We also point out that our results are closely related to the degree 0 Virasoro conjecture for a curve. | ZHU ShengMao | 2012 | Science China Mathematics2012，55，1： | 1 |
| 14 | Long-term fertilization effects on crop yield and nitrate nitrogen accumulation in soil in northwestern China显示文摘 | Yang Shengmao Li Fengmin Malhi S S | 2004 | Agronomy Journal2004，96，4： | 1 |
| 15 | Estimation of the main factors influencing haze,based on a long-term monitoring campaign in Hangzhou,China显示文摘 | Xiao Zhimei Zhang Yufen Hong Shengmao | 2011 | Aerosol and Air Quality Resarch2011，11，7： | 1 |
| 16 | Synthesis and characterization of highly stable dispersions of copper nanoparticles by a novel one-pot method 显示文摘 | Yang Guangbin Zhang Zhanming Zhang Shengmao | 2013 | Materials Research Bulletin2013，48，4： | 1 |
| 17 | Preparation and Evaluation of Tribological Properties of Cu Nanoparticles Surface Modified by Tetradecyl Hydroxamic Acid显示文摘 | Xiujuan Xiong Yingke Kang Guangbin Yang Shengmao Zhang Laigui Yu Pingyu Zhang | 2012 | Tribology Letters2012，，3： | 1 |
| 18 | The method of lower and upper solutions for fourth-order boundary value problem显示文摘 | MA Ruyun ZHANG Zhijun FU Shengmao | 1997 | J Math Anal Appl1997，215，： | 1 |
| 19 | The method of lower and upper solutions for fourth-order two-point boundary value problems显示文摘 | Ma Ruyun Zhang Jinhui Fu Shengmao | 1997 | Journal of mathematiea Analysis and Applieaions1997，，215： | 1 |
| 20 | Discrete variable structure control design and its application to a ship autopilot servo system显示文摘 | Song Lizhong Yao Qionghui Yan Shengmao | 2005 | Electrical Machines and Systems2005，，： | 1 |
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