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| 1 | Pathological evidence for residual SARS-CoV-2 in pulmonary tissues of a ready-for-discharge patient显示文摘Dear Editor,SARS-CoV-2,a novel coronavirus and causing COVID-19,has given rise to a worldwide pandemic.1,2 So far,tens of thousands of COVID-19 patients have been clinically cured and discharged,but multiple COVID-19 cases showed SARS-CoV-2 positive again in discharged patients,3 which raises an attention for the discharged patients.Also,there is an urgent need to understand the pathogenesis of SARS-CoV-2 infection.Here,we conducted postmortem pathologic study in a ready-fordischarge COVID-19 patient who succumbed to sudden cardiovascular accident.Pathological examination revealed SARSCoV-2-viruses remaining in pneumocytes and virus-caused pathological changes in the lungs.Our study provided new insights into SARS-CoV-2 pathogenesis and might facilitate the improvement of clinical guideline for virus containment and disease management. | Xiao-Hong Yao Zhi-Cheng He Ting-Yuan Li Hua-Rong Zhang Yan Wang Huaming Mou Qiaonan Guo Shi-Cang Yu Yanqing Ding Xindong Liu Yi-Fang Ping Xiu-Wu Bian | 2020 | Cell Research2020，30，6： | 35 |
| 2 | Metallogenetic Mechanism and Timing of Late Superimposing Fluid Mineralization in the Dongguashan Diplogenetic Stratified Copper Deposit,Anhui Province显示文摘An important diplogenetic mineralization event superimposed on pre-existing exhalation sediments in the Tongling area, Anhui province, was triggered by widespread granitic magmatism along the northeastern margin of the Yangtze Block during 140–135 Ma under extensional tectonic circumstances following the collision between the North China and Yangtze blocks. The main orebodies of the Dongguashan copper deposit, a typical diplogenetic stratified deposit among many polymetallic ore deposits in China, are hosted by strata between Upper Devonian sandstone and Carboniferous limestone, and its mineralization was genetically related to the Qingshanjiao intrusive. The Rb-Sr isotopic isochron of the Qingshanjiao intrusive yields an age of about 136.5±1.4 Ma. The ore-forming fluid reflected by the inclusion fluid in quartz veins is characterized by high temperature and high salinity, and its age was also determined by Rb -Sr isotope dating as 134±11 Ma. Oxygen and hydrogen isotope composition data suggest that the ore-forming fluid was derived mainly from magmatism. By integrating these isotopic dating data, characteristics of fluid inclusions and the geology of the deposit, the mineralization of the Dongguashan copper deposit is divided into two stages. First, a stratiform sedimentary deposit or protore layer formed in the Late Devonian to the Early Carboniferous, while in the second stage the pre-existing protore was superimposed by hydrothermal fluid that was derived from the Yanshanian magmatic activities occurring around 135 Ma ago. This two-stage mineralization formed the Dongguashan statiform copper deposit. Associated “porphyry” mineralization found in the bottom of and in surrounding intrusive rocks of the orebodies might have occurred in the same period as a second-stage mineralization of this deposit. | XUZhaowen LUXiancai LINGHongfei LUJianjun JIANGShoyong NIEGuiping HUANGShunsheng HUAMing | 2005 | Acta Geologica Sinica(English Edition)2005，79，3： | 21 |
| 3 | Microstructure and mechanical properties of hybrid fabricated 1Cr12Ni2WMoVNb steel by laser melting deposition显示文摘Laser melting deposition was carried out to deposit a 1Cr12Ni2WMoVNb steel bar on a wrought bar of same material. Room-temperature tensile properties of the hybrid fabricated 1Cr12Ni2WMoVNb steel sample were evaluated, and microstructure, fracture surface morphology, and hardness profile were analyzed by an optical microscope (OM), a scanning electron microscope (SEM), and a hardness tester. Results show that the hybrid fabricated 1Cr12Ni2WMoVNb steel sample consists of laser deposited zone, wrought substrate zone, and heat affected zone (HAZ) of the wrought substrate. The laser deposited zone has coarse columnar prior austenite grains and fine well-aligned dendritic structure, while the HAZ of the wrought substrate has equiaxed prior austenite grains which are notably finer than those in the wrought substrate zone. Besides, austenitic transformation mechanism of the HAZ of the wrought substrate is different from that of the laser deposited zone during the reheating period of the laser deposition, which determines the different prior austenite grain morphologies of the two zones. Microhardness values of both the laser deposited zone and the HAZ of the wrought substrate are higher than that of the wrought substrate zone. Tensile properties of the hybrid fabricated 1Cr12Ni2WMoVNb steel sample are comparable to those of the wrought bar, and fracture occurs in the wrought substrate zone during the tensile test. | Wang Yudai Tang Haibo Fang Yanli Wang Huaming | 2013 | Chinese Journal of Aeronautics2013，26，2： | 15 |
| 4 | Characterization of Amino Acid Composition in Fruits of Three Rosa roxburghii Genotypes显示文摘Rosa roxburghii Tratt., is an important commercial horticultural crop in China due to its nutritional and medicinal value. To date, the economic production of a single predominant cultivar of R. roxburghii(‘Guinong 5') consumes 30 000 hm^2 in China. Here, we characterize the amino acid composition of ‘Guinong 5' and two novel genotypes(AL11, GP6) that prove valuable and deserve wide application. Here, 17 amino acids(acid hydrolysis of proteins) were detected in ‘Guinong 5', AL11 and GP6 fruits, with Glutamine and Asparagine being abundant, and L-cystine being absent. The essential amino acids and total amino acids were the highest in AL11, while Asparagine was most abundant in GP6. For the free amino acid, 18 amino acids and 9 metabolites were detected in ‘Guinong 5', AL11 and GP6 fruits. γ-aminobutyric acid, L-arginine and ornithine were the most abundant in ‘Guinong 5', while phosphoserine and taurine were the highest in AL11. In comparison, GP6 had the highest levels of L-asparagine, an essential amino acid, and the highest total N containing compounds. | LU Min AN Huaming WANG Daoping | 2017 | Horticultural Plant Journal2017，3，6： | 11 |
| 5 | Performance Investigation of Cone Dielectric Elastomer Actuator Using Taguchi Method显示文摘Dielectric elastomer actuator (DEA) show promise for mechatronic applications due to the advantages of dielectric elastomer, such as lightweight, flexible, low cost, high strain, etc, and many configurations of DEAs have been demonstrated. As a kind of linear actuator, cone DEAs are studied in some laboratory prototypes due to easy manufacturing, however, their performance have not been exploited fully. Based on the working principle of DEA, a four-bar linkage mechanism is designed to provide negative stiffness preload, which can increase displacement output of actuator (outer diameter 100 mm) to 17 mm. Three cone actuating units are assembled in parallel to enhance the maximum force output to 5.07 N. Loading experiments of actuator in forward and backward strokes are performed, the experimental results show that backward stroke has stronger actuating capability than forward stroke, accordingly application of actuator is recommended. Four factors rather than applied voltage, i.e., number of actuating units, pre-stretch ratio, inner diameter, and outer diameter, are determined as influencing factors for Taguchi method. Then the performance objectives of actuator, i.e., displacement output, maximum force output, and maximum work in backward stroke, are investigated based on L9(34) Taguchi orthogonal design. The mean signal-to-noise (S/N) ratio based on the larger-the-better criterion is calculated according to the acquired displacement and force output. Analytical results show that outer diameter has the most significant influence on displacement output, and maximum force out and work output are influenced most by number of actuating units. Inner diameter also has an important effect on the performance objectives of actuator, while pre-stretch ratio has the least influence. The proposed performance investigation is helpful for the design and application of cone actuator in mechatronic system. | WANG Huaming ZHU Yinglong ZHAO Dongbiao LUAN Yunguang | 2011 | Chinese Journal of Mechanical Engineering2011，24，4： | 11 |
| 6 | Microstructures and tensile properties of laser cladded AerMet100 steel coating on 300M steel显示文摘A layer of AerMet100 steel was coated on the surface of forged 300M steel using laser cladding technique.The chemical compositions, microstructures, hardness and tensile properties of this AerMet100/300M material were systematically investigated. Results show that the composition of the AerMet100 clad layer is macroscopically homogeneous, and a compositional transition zone with width of 150m is observed between the clad layer and heat affected zone. Microstructures in transition zone transform from the fine needle-like bainite in 300M steel to the lath tempered martensite in AerMet100 clad layer.Microstructures in heat affected zone also gradually change from the thick plate bainite and blocky retained austenite(unstable heat affected zone) to fine needle-like bainite and film-like austenite(stable heat affected zone) due to different thermal cycle processes. Thick plate bainite together with blocky retained austenite in unstable heat affected zone reduce the strength and ductility of AerMet100/300M material. However, the tensile specimens, consisting of clad layer and stable heat affected zone, show slightly inferior mechanical properties to 300M steel. Ductile fracture exists in AerMet100 clad layer while quasi-cleavage fracture occurs in the stable heat affected zone. | Jian Liu Jia Li Xu Cheng Huaming Wang | 2018 | Journal of Materials Science & Technology2018，34，4： | 11 |
| 7 | Adaptive robust cubature Kalman filtering for satellite attitude estimation显示文摘This paper is concerned with the adaptive robust cubature Kalman filtering problem for the case that the dynamics model error and the measurement model error exist simultaneously in the satellite attitude estimation system. By using Hubel-based robust filtering methodology to correct the measurement covariance formulation of cubature Kalman filter, the proposed filtering algorithm could effectively suppress the measurement model error. To further enhance this effect and reduce the impact of the dynamics model error, two different adaptively robust filtering algorithms,one with the optimal adaptive factor based on the estimated covariance matrix of the predicted residuals and the other with multiple fading factors based on strong tracking algorithm, are developed and applied for the satellite attitude estimation. The quaternion is employed to represent the global attitude parameter, and three-dimensional generalized Rodrigues parameters are introduced to define the local attitude error. A multiplicative quaternion error is derived from the local attitude error to maintain quaternion normalization constraint in the filter. Simulation results indicate that the proposed novel algorithm could exhibit higher accuracy and faster convergence compared with the multiplicative extended Kalman filter, the unscented quaternion estimator, and the adaptive robust unscented Kalman filter. | Zhenbing QIU Huaming QIAN Guoqing WANG | 2018 | Chinese Journal of Aeronautics2018，31，4： | 9 |
| 8 | Water demand for ecosystem protection in rivers with hyper-concentrated sediment-laden flow显示文摘Sediment transport is one of the main concerns in a river system with hyper-concentrated flows. Therefore, the water use for sediment transport must be considered in study on the water demand for river ecosystem. The conventional methods for calculating the Minimum Water Demand for River Ecosystem (MWDRE) are not appropriate for rivers with high sediment concentration. This paper studied the MWDRE in wet season, dry season and the whole year under different water-and-sediment conditions in the Lower Yellow River, which is regarded as a typical river with sediment-laden flows. The characteristics of MWDRE in the river are analyzed. Firstly, the water demand for sediment transport (WDST) is much larger than the demands for other riverine functions, the WDST accounts for the absolute majority of the MWDRE. Secondly, in wet season when the WDST is satisfied, not only most of the annual incoming sediment can be transported downstream, but also the water demands for other river functions can be satisfied automatically, so that the MWDRE in wet season is identical to the WDST. Thirdly, in dry season, when the WDST is satisfied, the water demands for other river functions can also be satisfied, but the low sediment transport efficiency results in significant waste of water resources. According to these characteristics and aiming at decreasing sediment deposition in the riverbed and improving the utilization efficiency of water resources, hydrological engineering works can be used to regulate or control flow and sediment so that the sediment incoming in dry season can be accumulated and be transported downstream intensively and thus efficiently in wet season. | LUO Huaming, LI Tianhong, NI Jinren & WANG Yudong Department of Environmental Engineering, Peking University, Beijing 100871, China The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China | 2004 | Science China(Technological Sciences)2004，47，z1： | 8 |
| 9 | Structural Characteristics and Formation Mechanism in the Micangshan Foreland,South China显示文摘躺在 Dabashan, Longmenshan 和 Qinling 山的连接, Micangshan Orogenic 带结合了盆是双结构和背戳有很少水平排水量,小戳差错和连续沉积盖子的三角形的带。根据 3D 地震数据,并且通过沉积、结构的研究, Micangshan 低岬能被划分成五条潜水艇带,它从北方到向南:地下室推进的、正面的戳,低岬 depression-back-thrust 三角,低岬褶层带或背斜带,和 Tongjiang 消沉。沿着到东方的从西方的罢工的方向, Micangshan 的弓形的结构的带能被划分成西方,中间和东方片断。在在 Qinling 和 Yangtze 盘子之间的碰撞期间, Micangshan Orogenic 带受到三个僵硬岩层的相互作用:Bikou, Foping,和 Fenghuangshan (又名 Ziyang ) 岩层。僵硬岩层的碰撞进程控制了 Micangshan 低岬的结构的开发,它是:(a) 在形成结构的更早的基础的 Micangshan-Hannan 和 Bikou 岩层之间的以前的碰撞;并且(b) 形成结构的带的主要身体的以后的碰撞。Micangshan Orogenic 带的形成过程能被划分成四个阶段:(1 ) 在 Indosinian 运动的早阶段, Micangshan-Hannan 僵硬岩层被连接到 Qinling 板由顺时针方向向 Qinling 板的 Yangtze 板的 subduction;(2 ) 自从晚三叠纪, Tongnanba 和 Jiulongshan 背斜的更早的基础和相应向斜被压缩从 Bikou, Foping 和 Micangshan-Hannan 的不同方向形成岩层;(3 ) 在喜玛拉雅的运动的早阶段, Micangshan-Hannan 岩层形成了 Micangshan 越过水坝落下的水岩山病房低岬盆和压缩压力主要沿着两它的胁腹被集中,而 Micangshan-Hannan 岩层挤了进 Qinling Orogenic,与力量系上带子;(4 ) 在喜玛拉雅的运动的迟了的阶段, Qinling 板的主要碰撞做了岩层的旧地下室岩石快速高举,形成 Micangshan Orogenic 带。Micangshan 低岬弓形的结构由于岩层的非同质被形成运动。 | XU Huaming LIU Shu QU Guosheng LI Yanfeng SUN Gang LIU Kang | 2009 | Acta Geologica Sinica(English Edition)2009，83，1： | 8 |
| 10 | Hexagonal boron nitride adsorbent: Synthesis, performance tailoring and applications显示文摘Hexagonal boron nitride(h-BN),with unique structural and properties,has shown enormous potentitoward variety of possible applications.By virtue of partially-ionic character of BN chemical bonds anusually large specific surface area,h-BN-related nanostructures exhibit appealing adsorption propertiewhich can be widely applied for separation and purification towards energy and environment treatmenIn this review,recent progress in designing h-BN micro,nano-structure,controlled synthesis,performancoptimizing as well as energy and environment-related adsorption applications are summarized.Strategieto tailor the h-BN can be classified as morphology control,element doping,defect control and surfacmodification,focusing on how to optimize the adsorption performance.In order to insight the intrinsimechanism of tuning strategies for property optimization,the significant adsorption applications of h-Btowards hydrogen storage,CO2 capture,pollutants removal from water and adsorption desulfurization arpresented. | Jun Xiong Jun Di Wenshuai Zhu Huaming Li | 2020 | Journal of Energy Chemistry2020，29，1： | 7 |
| 11 | Research on fiber optic gyro signal de-noising based on wavelet packet soft-threshold显示文摘Gyro's drift is not only the main drift error which influences gyro's precision but also the primary factor that affects gyro's reliability.Reducing zero drift and random drift is a key problem to the output of a gyro signal.A three-layer de-nosing threshold algorithm is proposed based on the wavelet decomposition to dispose the signal which is collected from a running fiber optic gyro(FOG).The coefficients are obtained from the three-layer wavelet packet decomposition.By setting the high frequency part which is greater than wavelet packet threshold as zero,then reconstructing the nodes which have been filtered out noise and interruption,the soft threshold function is constructed by the coefficients of the third nodes.Compared wavelet packet de-noise with forced de-noising method, the proposed method is more effective.Simulation results show that the random drift compensation is enhanced by 13.1%,and reduces zero drift by 0.052 6°/h. | Qian Huaming & Ma Jichen Coll.of Automation,Harbin Engineering Univ.,Harbin 150001,P.R.China | 2009 | Journal of Systems Engineering and Electronics2009，20，3： | 7 |
| 12 | Effects of microstructure on fatigue crack propagation behavior in a bi-modal TC11 titanium alloy fabricated via laser additive manufacturing显示文摘In this study, the crack propagation behaviors in the equiaxed and equiaxed-columnar grain regions of a heat-treated laser additive manufacturing(LAM) TC11 alloy with a special bi-modal microstructure are investigated. The results indicate that the alloy presents a special bi-modal microstructure that comprises a fork-like primary α(αp) phase surrounded by a secondary α colony(αs) in the α phase matrix after the heat treatment is completed. The samples demonstrate a fast crack growth rate with larger da/d N values through the equiaxed grain sample versus across the equiaxed-columnar grain sample at low K values(<13.8). The differences that are observed between the crack propagation behaviors(in the crack initiation stage) of the samples can be mostly attributed to the different size and morphology of the αp lamellae and αscolony within the grains in the equiaxed and columnar grain regions rather than the grain boundaries. The cracks prefer to grow along the α/β boundary with a smooth propagation route and a fast propagation rate in the equiaxed grain region, where the αpand α clusters have a large size.However, in the columnar grain region, small and randomly distributed αplamellae generate a zigzagshaped propagation path with a reduction in the da/d N value. Additionally, the change in the size of the αp lamellae in the equiaxed grains(heat affected bands, HAB) is also observed to influence the propagation behavior of the crack during the crack initiation stage. | Yafei Wang Rui Chen Xu Cheng Yanyan Zhu Jikui Zhang Huaming Wang | 2019 | Journal of Materials Science & Technology2019，35，2： | 6 |
| 13 | Habitat use and diel activity pattern of the Tibetan Snowcock(Tetraogallus tibetanus):a case study using camera traps for surveying high-elevation bird species显示文摘Background:Global climate change has had significant effects on animal distribution and population dynamics in mid-latitude alpine areas,but we know little about the basic ecology of high-altitude species due to the difficulties of conducting field research in the harsh climate and habitat present at high elevations.The Tibetan Snowcock(Tetraogallus tibetanus) is a little-known phasianid distributing in alpine areas at extremely high elevations in the mountains surrounding the Tibetan Plateau.Estimating the species occupancy rate and discussing the factors affecting its distribution based on infrared-triggered camera techniques would provide both a baseline to measure the influence of global warming and valuable information on its conservation and ecology.Methods:We used infrared-triggered cameras to investigate the Tibetan Snowcock on the western slope of Mt.Gongga from June to November 2016.We used the R package 'overlap' to visualize its activity pattern,and used an occupancy model to both examine its habitat use as well as to determine the most influential variables affecting its habitat use.Results:Using 103 camera traps over 9213 camera-days,we recorded 428 instances of Tibetan Snowcock.The diel activity peaks of Tibetan Snowcock occurred during the periods of 8:00-10:00 am and 18:00-20:00 pm.The model estimate of occupancy for Tibetan Snowcock(0.830) was slightly higher than the na?ve site occupancy based on camera detections(0.663),indicating a wider use of habitat than the camera traps recorded.Elevation,slope,settlement density,road density,and EVI(enhanced vegetation index) were the most influential variables for its habitat use.Conclusions:The Tibetan Snowcock is confirmed to be diurnal.This species prefers an environment with a high elevation,gentle slope,and low EVI,apparently facing a trade-off between predator risk,foraging efficiency,and food availability.When human impact was low,there was a positive correlation between the habitat use of the Tibetan Snowcock and both its road and settlement densities.Infrared cameras and proper survey design are valuable for investigating extreme alpine phasianids. | Gai Luo Chuangming Yang Huaming Zhou Michael Seitz Yongjie Wu Jianghong Ran | 2019 | Avian Research2019，10，1： | 6 |
| 14 | Hierarchical MoS2 intercalated clay hybrid nanosheets with enhanced catalytic activity显示文摘新兴的层次瞬间 2/pillared-montmorillonite (瞬间 2/PMMT) 混血儿 nanosheets 成功地在 cetyltrimethylammonium 溴化物 PMMT 的夹层以内通过瞬间 2 的灵巧的在原处热水的合成被准备,并且他们的催化表演被 4-nitrophenol (4-NP ) 的减小反应作为 reductant 用 NaBH 4 评估。微观结构和形态学描述显示瞬间 2/PMMT 与 1.29 nm,和瞬间 2 nanosheets 的夹层间距展出了叠混血儿的分层的结构在 montmorillonite (MMT ) 以内被设置层,与大多数暴露于外面的边。瞬间 2/PMMT 的催化活动和稳定性被 MMT 两个都提高。与是的瞬间 2/PMMT 催化剂, 4-NP 减小的明显的反应率常数是 0.723 min 1 并且在 ~ 被维持在五反应以后的 0.679 min 1 骑车。为 4-NP 的减小反应的瞬间 2/PMMT 和可能的催化作用机制的结构的进化被调查。同样准备的瞬间 2/PMMT 混血儿 nanosheets 在水处理和生物医学的域为催化申请正在答应候选人。在这研究开发的策略能为设计混合 nanosheets 与提供卓见多样异构二维(2D ) nanomaterials。 | Kang Peng Liangjie Fu Huaming Yang Jing Ouyang Aidong Tang | 2017 | Nano Research2017，10，2： | 6 |
| 15 | Catalytic oxidative desulfurization of fuels in acidic deep eutectic solvents with [(C_6H_(13))_3P(C_(14)H_(29))]_3PMo_(12)O_(40) as a catalyst显示文摘Deep eutectic solvents(DESs) are a new class of green solvents analogous to ionic liquids due to their biodegradable capacity and low cost. However, the direct extractive desulfurization of diesel oil by DESs cannot meet the government's standard. In this work, amphiphilic polyoxometalates were synthesized and characterized by FT-IR and mass spectrometry.The oxidative desulfurization results showed that benzothiophene(BT) could be completely removed by employing a [(C_6H_(13))_3P(C_(14)H_(29))]_3PMo_(12)O_(40), DES(ChCl/2 Ac) and H_2O_2 system. It was also found that the organic cation of catalysts played a positive role in oxidative desulfurization. The reaction conditions, such as reaction temperature and time, the amount of catalyst and DES and H_2O_2/S(O/S) molar ratio, were optimized. Different sulfides were tested to determine the desulfurization selectivity of the optimal reaction system, and it was found that 97.2% of dibenzothiophene(DBT) could be removed followed by 80.7% of 4-MDBT and 76.0% of 4,6-DMDBT. After reaction, the IR spectra showed that the catalyst [(C_6H_(13))_3P(C_(14)H_(29))]_3PMo_(12)O_(40) was stable during the reaction process and the oxidative product was dibenzothiophene sulfone(DBTO_2). Furthermore, the catalyst can be regenerated and recycled for four runs with little loss of activity. | Wei Jiang Hao Jia Zhanglong Zheng Linhua Zhu Lei Dong Wei Liu Wenshuai Zhu Huaming Li | 2018 | Petroleum Science2018，15，4： | 6 |
| 16 | Chloroplast DNA-based genetic variation of Rosa roxburghii in Southwest China:Phylogeography and conservation implications显示文摘Rosa roxburghii Tratt.is a well-known commercial horticultural crop in China with nutritional and medicinal value.Wild germplasms of this species are mainly distributed in Southwest China but the population is decreasing due to continuous exploitation,habitat destruction,and fragmentation.Therefore,assessing the genetic diversity and phylogeography is essential for efficient conservation.Herein,two chloroplast intergenic spacers(trnL-trnF and accD-psaI)were investigated in 255 individuals from 29 R.roxburghii populations and 18 haplotypes(H1–H18)were identified.High levels of haplotype diversity(Hd=0.829)and nucleotide diversity(π=1.3×10^(−3))were detected in these populations.Also,the genetic variation representing 86.4%of the total variation was detected by an analysis of molecular variance.A significant correlation was established between genetic divergence and geographic distance by the Mantel test(r=0.204,P=0.04,9999 permutations),suggesting the isolation-by-distance model.A significantly higher Nst than Gst(Nst=0.257,Gst=0.136,P<0.05)indicated the phylogeographic structure of R.roxburghii.Further phylogeographic analysis revealed rapid range expansion in the population,probably between 647073 and 217848 years ago.The primary processes shaping the genetic patterns of the R.roxburghii populations included restricted gene flow with isolation distance within clades 1-8,2-3,and overall,contiguous expansion within clades 1-3 and 3-2,past fragmentation,and/or long-distance colonization within clades 1-9 and 2-2.Conservation priority should be given to the core populations GZ,FQ,DF,DS,xy,AL,LC,PB,and XY in the Yunnan-Guizhou Plateau,NZ and MX in the Qingling-Bashan mountains,and MN in the Hengduan mountains,where an in situ preservation and management strategy should be applied. | Min Lu Huaishan Zhang Huaming An | 2021 | Horticultural Plant Journal2021，7，4： | 5 |
| 17 | Polyoxometalate-based silica-supported ionic liquids for heterogeneous oxidative desulfurization in fuels显示文摘With the aim of deep desulfurization, silica-supported polyoxometalate-based ionic liquids were successfully prepared by a one-pot hydrothermal process and employed in heterogeneous oxidative desulfurization of various sulfur compounds. The compositions and structures of the hybrid samples were characterized by various methods such as FT-IR, XPS, Raman,UV–Vis, wide-angle XRD and N_2 adsorption–desorption. The experimental results indicated that the hybrid materials presented a high dispersion of tungsten species and excellent catalytic activity for the removal of 4,6-dimethyldibenzothiophene without any organic solvent as extractant, and the sulfur removal could reach 100.0% under mild conditions.The catalytic performance on various substrates was also investigated in detail. After cycling seven cycles, the sulfur removal of the heterogeneous system still reached 93.0%. The GC-MS analysis results demonstrated that the sulfur compound was first adsorbed by the catalyst and subsequently oxidized to its corresponding sulfone. | Ming Zhang Miao Wang Jiapeng Yang Hongping Li Jiaqi Liu Xiao Chen Wenshuai Zhu Huaming Li | 2018 | Petroleum Science2018，15，4： | 5 |
| 18 | A research on the contact stress of roller bearing based on crowning analysis显示文摘According to elastic contact theory,contact model between roller and race is established.Compared with the Hertz results,the results are proved,based on which contact stress distribution of different crowning and initial contact length is given,then the appropriate value is derived.On the basis,inertia force and different radial force is given into consideration.Via analysis,it concludes that under balanced pure radial load condition the largest contact stress between roller and race increases along with crowning value increasing.With the same crowning value,the largest contact stress between roller and race decreases in the first and increases at the end along with initial contact length increasing.Contact stress between roller and outer race increases along with revolution speed increasing. | XU Juan NIU Qingbo QI Huaming ZHANG Li GUAN Meng | 2012 | Computer Aided Drafting,Design and Manufacturing2012，22，2： | 5 |
| 19 | Optimization of environmental variables in habitat suitability modeling for mantis shrimp Oratosquilla oratoria in the Haizhou Bay and adjacent waters显示文摘Habitat suitability index(HSI)models have been widely used to analyze the relationship between species abundance and environmental factors,and ultimately inform management of marine species.The response of species abundance to each environmental variable is different and habitat requirements may change over life history stages and seasons.Therefore,it is necessary to determine the optimal combination of environmental variables in HSI modelling.In this study,generalized additive models(GAMs)were used to determine which environmental variables to be included in the HSI models.Significant variables were retained and weighted in the HSI model according to their relative contribution(%)to the total deviation explained by the boosted regression tree(BRT).The HSI models were applied to evaluate the habitat suitability of mantis shrimp Oratosquilla oratoria in the Haizhou Bay and adjacent areas in 2011 and 2013–2017.Ontogenetic and seasonal variations in HSI models of mantis shrimp were also examined.Among the four models(non-optimized model,BRT informed HSI model,GAM informed HSI model,and both BRT and GAM informed HSI model),both BRT and GAM informed HSI model showed the best performance.Four environmental variables(bottom temperature,depth,distance offshore and sediment type)were selected in the HSI models for four groups(spring-juvenile,spring-adult,falljuvenile and fall-adult)of mantis shrimp.The distribution of habitat suitability showed similar patterns between juveniles and adults,but obvious seasonal variations were observed.This study suggests that the process of optimizing environmental variables in HSI models improves the performance of HSI models,and this optimization strategy could be extended to other marine organisms to enhance the understanding of the habitat suitability of target species. | Yunlei Zhang Huaming Yu Haiqing Yu Binduo Xu Chongliang Zhang Yiping Ren Ying Xue Lili Xu | 2020 | Acta Oceanologica Sinica2020，39，6： | 5 |
| 20 | A novel high resolution model without open boundary conditions applied to the China Seas: first investigation on tides显示文摘We developed a Global Ocean Circulation and Tide Model (GOCTM) with coarse grids in the open deep ocean degrading ‘smoothly’ into the highly resolved China Seas (CS) of refined grids to study the tides and circulation there.GOCTM is based on the framework of the Finite Volume approach for better mass conservation through improved transports across the discrete individual control volume.It also takes a full advantage of the geometric flexibility of unstructured mesh using a realistic global topography including the Arctic Ocean.The CS are given a special focus by refining the unstructured grids,but they are embedded into global domain naturally.Furthermore,GOCTM not only successfully avoids the treatment of the open boundaries,but also optimizes the trade-off between computational cost and model accuracy.Meanwhile,GOCTM is driven by the astronomical tide-generating potential and the secondary tide-generating potential directly,together with the wind stress and heat flux.GOCTM succeeds in reproducing the global eight principal tidal harmonic constants.Particularly,the simulated tidal results in the CS are improved compared to some other regional models with the discrepancy of 3.9 cm for M 2 tide.This idea of GOCTM can also be referred for other regional ocean study. | YU Huaming CHEN Xueen BAO Xianwen Thomas Pohlmann WU Dexing | 2010 | Acta Oceanologica Sinica2010，29，6： | 5 |
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