|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | A Facile Synthesis of Monodisperse Au Nanoparticles and Their Catalysis of CO Oxidation显示文摘Monodisperse Au nanoparticles(NPs)have been synthesized at room temperature via a burst nucleation of Au upon injection of the reducing agent t-butylamine-borane complex into a 1,2,3,4-tetrahydronaphthalene solution of HAuCl4·3H2O in the presence of oleylamine.The as-synthesized Au NPs show size-dependent surface plasmonic properties between 520 and 530 nm.They adopt an icosahedral shape and are polycrystalline with multiple-twinned structures.When deposited on a graphitized porous carbon support,the NPs are highly active for CO oxidation,showing 100%CO conversion at-45°C. | Sheng Peng Youngmin Lee Chao Wang Hongfeng Yin Sheng Dai Shouheng Sun | 2008 | Nano Research2008，1，3： | 11 |
| 2 | Structures and catalytic performances of Me/SAPO-34(Me=Mn,Ni,Co)catalysts for low-tem perature SCR of NO_x by ammonia显示文摘Me/SAPO-34(Me=Mn,Ni,Co)series of catalysts were prepared by a wetness impregnation method and investigated for the selective catalytic reduction of nitrogen oxides with ammonia(NH 3-SCR).Among them,Mn/SAPO-34 catalyst was found as the most promising candidate based on its superior low-temperature activity.The catalysts were characterized by X-ray diffraction(XRD),transmission electron microscopy images(TEM),nuclear magnetic resonance(NMR),X-ray photoelectron spectroscopy(XPS),temperature programmed reduction and desorption(TPR and TPD),and diffuse reflectance infrared Fourier transformed spectroscopy(DRIFTS)of NH_(3)/NO_(x)adsorption.Mn/SAPO-34 is obviously different from Ni/SAPO-34 and Co/SAPO-34 in the active species state and distribution.Surface MnO_(x)species which play an essential role in NO oxidation and NO_(2)adsorption,act as better active sites than nickel and cobalt mostly in the form of the aluminates and silicates. | Xuesong Liu Zhiming Sui Hongfeng Chen Yong Chen Haigang Liu Peng Jiang Zhongyun Shen Wensheng Linghu Xiaodong Wu | 2021 | Journal of Environmental Sciences2021，33，6： | 8 |
| 3 | Hardness, quench sensitivity, and electrical conductivity of 7xxx Al alloys with high Zn concentrations显示文摘In this study,7 xxx(Al-Zn-Mg-Cu)alloys with high Zn concentrations were fabricated by increasing the Zn contents of 7085 Al alloys.The hardness,quench sensitivity,and electrical conductivity of the alloys and a 7085 Al alloy under peak-aged state were studied.The high Zn concentration alloys had higherη′phase densities and lower quantities of Mg solid atoms than the 7085 Al alloy and thus exhibited higher hardness and electrical conductivity.The high Zn concentration alloys also exhibited slightly higher quench sensitivity than 7085 Al alloy,and the depth of the quenching layer of the alloy with 11.27 wt%Zn content reached 100 mm.This work confirmed that the novel 7 xxx alloy with high Zn concentration showed balanced performance,exhibiting enhanced hardness and conductivity and reasonable quench sensitivity compared with the 7085 commercial Al alloy. | PENG YingHao LIU ChongYu MA ZongYi JIANG HongJie HUANG HongFeng | 2020 | Science China(Technological Sciences)2020，63，6： | 3 |
| 4 | Study on the Ground Cover Plant in Tibetan Herb Garden显示文摘This paper conducts a comprehensive survey of the ground cover plant in Tibetan herb garden for the first time using ' five-point sampling method'. Survey results show that:(i) A total of 46 families,95 genera,119 species of ground cover plants in herb garden are applied in Tibet,and Asteraceae,Gramineae,Leguminosae,Labiatae,Iridaceae and Liliaceae are used most,with the species number of 22,15,8,7,6 and 5,respectively,accounting for 18. 49%,12. 61%,6. 72%,5. 88%,5. 04% and 4. 20% of the plants surveyed,respectively.(ii) In terms of importance value for the herbaceous layer,the top three plants are Poa pratensis L.,Festuca arundinace and Lolium multiflorum L.,with the importance value of 45. 950,34. 610 and 29. 880,respectively; in terms of importance value for the non-turf ground cover herb plants,the top three plants are Trifolium L.,Cosmos bipinnata Cav. and Althaea rosea(Linn.) Cavan.,with the importance value of4. 372,3. 437 and 2. 062,respectively.(iii) The overall level of greening is low and uneven in the region,with large regional differences. In terms of ground cover plant abundance,Nyingchi > Lhasa > Shannan > Changdu > Xigaze > Ali > Nagqu. | Zhineng LIU Hongfeng ZHANG Gang PAN Wei WANG Jin XU Peng ZHOU | 2016 | Asian Agricultural Research2016，8，11： | 2 |
| 5 | Intra-individual variability of high-sensitivity C-reactive protein in Chinese general population显示文摘 | Shouling Wu Yun Li Cheng Jin Peng Yang Dongqing Li Hongfeng Li Chong Shen | 2010 | International Journal of Cardiology2010，，1： | 1 |
| 6 | Research on torque calculation method of permanent - magnet spherical motor based on the finite - element method 显示文摘 | Xia Changliang Song Peng Li Hongfeng | 2009 | IEEE Trans- actions on Magnetics2009，45，4： | 1 |
| 7 | Investigation of Garden Nurseries in Linzhi City of Tibet显示文摘Garden nurseries in Linzhi City, Tibet were comprehensively investigated, 132 garden plant species were covered. The investigation showed that garden nurseries in the local area remained in the initial development stage, and the scale of most nurseries was small, and there was blank in many aspects of the landscape architecture industry. Most seedlings were introduced from the interior regions of China, self-bred seedlings in local nurseries accounted for only 32.68%. On the basis of the investigation results, garden nurseries in Linzhi City were analyzed specifi cally to fi gure out advantages and defi ciencies of local garden nurseries. | LIU Zhineng PAN Gang ZHANG Hongfeng FANG Jiangping ZHOU Peng XU Jin | 2016 | Journal of Landscape Research2016，8，3： | 1 |
| 8 | End-effect of the permanent-magnet spherical motor and its influence on back-EMF characteristics显示文摘The permanent-magnet(PM) spherical motor has special configuration and complicated distribution of electromagnetic field.The spatial distribution of the effective flux density produced by permanent magnets is obtained,and the end-effect of the permanent magnets is analyzed.In the 3-dimensional(3-D) finite element(FE) analysis,the calculation of Back-EMF charac-teristics of the PM spherical motor needs to be conducted by steps,which leads to large computational burden.A novel ana-lyzing method to quantize the end-effect of the PM spherical motor is proposed,that is,the end-effect coefficient of the PM spherical motor is calculated to revise the back-EMF waveform obtained from the 2-D FE model.Under different outer radii of the stator coil and different pole arc coefficients of the PM spherical motor,the revised 2-D results are validated by the results obtained from the 3-D FE model and the experimental results.With this method,the special structural feature of the PM spherical motor is fully considered;the pure 3-D calculation of electromagnetic field is conducted only once;higher precision and less computational burden can be achieved.The method provides a new approach to investigating the back-EMF charac-teristic of the PM spherical motor. | SHI TingNa SONG Peng LI HongFeng XIA ChangLiang | 2012 | Science China(Technological Sciences)2012，55，1： | 1 |
| 9 | Constant Color-leaved Species in Tibet and Their Application in Landscaping显示文摘To analyze the basic conditions of constant colored-leaved tree species in Tibet, this study applied the 'biological five-point method' to investigate the plant communities layer by layer, investigated landscape plant species and their landscaping application in Tibet. The results showed that(a) there are 40 constant color-leaved species(including varieties) in Tibet, belonging to 35 genera, 22 families, including 26 tree species and 16 shrub species. In terms of color, 22 species are yellow, 9 purple, 7 red and 2 others, occupying 55.00%, 22.50%, 17.50% and 5.00% of the total constant color-leaved species, respectively.(b) In the tree layer, the species ranking the top 2 of the importance value list are Prunus cerasifera Ehrhar f. atropurpurea Rehd. and Photiniax serrulata ‘Rubens' with an importance value of 26.063 and 9.035; in the shrub layer, the species ranking the top 3 of the importance value list are Ligustrum × vicaryi Hort, Berberis thunbergi var. atropurpurea Chenault, Platycladus orientalis cv. Aurea Nana with an importance value of 22.577, 18.987 and 10.529.(c) The most-applied species belong to the Rosaceae(9), Leguminosae(5), and Oleaceae(3), accounting for 22.50%, 12.50% and 7.50% of the total investigated constant color-leaved species, respectively.(d) Most of the investigated species grow well, but some of them including Berberis thunbergii var. atropurpurea Chenault grow moderately, Loropetalum chinense var. rubrum, Aucuba chinensis var. iegata grow poorly, and the causes of poor growth should be explored further or application of these species should be controlled. In addition, pertinent suggestions were put forward in view of major problems in the application of constant color-leaved species in Tibet. | LIU Zhineng ZHANG Hongfeng PAN Gang XU Jin HAO Wenyuan WANG Wei ZHOU Peng | 2017 | Journal of Landscape Research2017，9，3： | 1 |
| 10 | Photoluminescence and energy transfer of terbium doped titania film显示文摘 | Changwen Jia Erqing Xie Aihua Peng Ran Jiang Fan Ye Hongfeng Lin Tao Xu | 2005 | Thin Solid Films2005，，2： | 1 |
| 11 | Research on torque calculation method of permanent- magnet spherical motor based on the finite-element method显示文摘 | Xia Changliang Song Peng Li Hongfeng | 2009 | IEEE Transactions on Magnetics2009，45，4： | 1 |
| 12 | Photoluminescence properties of TiO 2 : Eu 3+ thin films deposited on different substrates显示文摘 | Aihua Peng Erqing Xie Changwen Jia Ran Jiang Hongfeng Lin | 2005 | Materials Letters2005，，： | 1 |
| 13 | Research on torque calculation method of permanent-magnet spherical motor based on the finite-element method显示文摘 | Xia Changliang Song Peng Li Hongfeng | 2009 | IEEE Transactions on Magnetics2009，45，4： | 1 |
| 14 | Effects of Chronic Mild Stress on the Development of Atherosclerosis and Expression of Toll-Like Receptor 4 Signaling Pathway in Adolescent Apolipoprotein E Knockout Mice显示文摘 | Hongfeng Gu Chaoke Tang Kuang Peng Hui Sun Yongzong Yang Terry Delovitch | 2009 | Journal of Biomedicine and Biotechnology2009，，： | 1 |
| 15 | Pain or Gain?Chinese Experience of Capital Account Liberalization显示文摘The neoclassical growth model predicts that capital account liberalization could potentially enhance economic performance;however, there is no consistent empirical evidence to support this positive association. Using a novel dataset of Chinese capital account openness, this paper demonstrates a positive relationship between capital account liberalization and aggregate economic performance. The difference-indifferences method is used to capture the causal effect of capital account liberalization on economic performance by taking advantage of variations in both external financial dependence and the progress of capital account openness. We investigate three channels that could strengthen this positive relationship using a firm-level dataset. We find that capital account liberalization could:(i) alleviate the degree of resource misallocation, and this effect is more significant in industries relying heavily on external finance and in regions with more favorable business environments;(ii) enhance firms' total factor productivity;and (iii) promote innovation. Our findings suggest that a strategy of gradual openness will leave some leeway not only for improvement in domestic markets but also to mitigate exposure to unfavorable global shocks. | Hongfeng Peng Jingwen Yu | 2019 | China & World Economy2019，27，5： | 1 |
| 16 | Research on torque calculation method of permanent-magnet spherical motor based on the finite-element method显示文摘 | Xia Changliang Song Peng Li Hongfeng | 2009 | IEEE Transactions on Magnetics2009，45，4： | 1 |
| 17 | Outcomes of allograft from donor kidney microthrombi and secondary recipient thrombotic microangiopathy: should we consider loosening the belt?显示文摘There is currently a huge worldwide demand for donor kidneys for organ transplantation.Consequently,numerous marginal donor kidneys,such as kidneys with microthrombi,are used to save patients'lives.While some studies have shown an association between the presence of microthrombi in donor kidneys and an increased risk for delayed graft function(DGF)(McCall et al.,2003;Gao et al.,2019),other studies have demonstrated that microthrombi negatively impact the rate of DGF(Batra et al.,2016;Hansen et al.,2018),but not graft survival rate(McCall et al.,2003;Batra et al.,2016;Gao et al.,2019).In contrast,Hansen et al.(2018)concluded that fibrin thrombi were not only associated with reduced graft function six months posttransplantation but also with increased graft loss within the first year of transplantation.On the other hand,Batra et al.(2016)found no significant differences in the DGF rate or one-year graft function between recipients in diffuse and focal microthrombi groups.To date,however,the overall influence of donor kidney microthrombi and the degree of influence on prognosis remain controversial,necessitating further research. | Yamei CHENG Luying GUO Xue REN Zhenzhen YANG Junhao LV Huiping WANG Wenhan PENG Hongfeng HUANG Jianyong WU Jianghua CHEN Rending WANG | 2023 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2023，24，6： | 0 |
| 18 | Direction and Potential of Exploration for Natural Gas in Qaidam Basin显示文摘Qaidam 盆是大中央新生代内部盆,它是包围的 byQilianshan 山, Altun 山,和 Kunlun 山,并且与它的地理区域,沉积岩石的区域,和最大的沉积厚度是 25 万 km^2, 12.1 万 km^2, and17.2 千米分别地。天然气资源足够地充满盆。全部的油和煤气的资源目前是 46.5 亿吨,这被估计,哪个天然气资源是 25000 亿 m^3。 | Tan Yanhu Peng Dehua Pan Hongfeng Zhang Bingqing Zhang Xiaofeng Zhang Jihong | 2007 | China Oil & Gas2007，14，2： | 0 |
| 19 | Regulating Electronic Status of Platinum Nanoparticles by Metal-Organic Frameworks for Selective Catalysis显示文摘Selective hydrogenation of alkynes to alkenes remains challenging in the field of catalysis due to the ease of over-hydrogenated of alkynes to alkanes.Favorably,the incorporation of metal nanoparticles(MNPs)into metal-organic frameworks(MOFs)provides an opportunity to adjust the surface electronic properties of MNPs for selective hydrogenation of alkynes.Herein,we used differentmetal-O clusters of MOFs to regulate the electronic status of platinum nanoparticles(Pt NPs)toward overhydrogenation,semihydrogenation,and unhydrogenation of phenylacetylene.Specifically,Pt/Fe-O cluster-based MOFs are found to reduce the electronic density on Pt NPs and inhibit the overhydrogenation of styrene,leading to an 80%increase in selectivity toward a semihydrogenation product(styrene).Meanwhile,Cu-O cluster-based MOFs generate high oxidation states of Pt NPs and release Cu^(2+)ions,which worked together to deactivate Pt NPs in the hydrogenation reaction entirely.Thus,our studies illustrate the critical role of metal-O clusters in governing chemical environments within MOFs for the precise control of selective hydrogenation of alkynes,thereby,offering appealing opportunities for designing MNPs/MOFs catalysts to prompt a variety of reactions. | Yu Shen Ting Pan Peng Wu Jiawei Huang Hongfeng Li Islam EKhalil Sheng Li Bing Zheng Jiansheng Wu Qiang Wang Weina Zhang Wei David Wei Fengwei Huo | 2021 | CCS Chemistry2021，3，5： | 0 |
| 20 | Investigation and Application of Colored-leaf Plants in Tibet显示文摘For the quantitative analysis of colored-leaf plants in Tibet,the five-point sampling method is used for stratified investigation of garden plant communities in Tibet.(i)There are a total of 46 families,76 genera and 110 species of garden colored-leaf plants in Tibet,including 56 kinds of trees,40 kinds of bushes,9 kinds of herbs,4 kinds of vines and 1 kind of bamboo.There are too few colored-leaf herbs and bamboos,and there is a serious imbalance between evergreen and deciduous trees,between coniferous and broad leaved forests.(ii)The most widely applied families include Rosaceae(26),Salicaceae(12),Fabaceae(6),Aceraceae(5),Oleaceae(4)and Elaeagnaceae(4),accounting for 23.64%,10.91%,5.46%,4.55%,3.64% and 3.64% of the investigated colored-leaf plants,respectively.(iii)In terms of color,there are 55 kinds of red plants,43 kinds of yellow plants and 12 kinds of plants with other colors,accounting for 50.00%,39.09%and 10.91% of colored-leaf plants,respectively.There are 9 kinds of spring color leaf plants,63 kinds of autumn color leaf plants,29 kinds of constant color leaf plants,7 kinds of double color leaf plants and 2 kinds of spot color leaf plants,accounting for 8.18%,57.27%,26.36%,6.36% and 1.82% of colored-leaf plants,respectively,indicating that it is dominated by autumn color leaf and constant color leaf plants.(iv)In terms of importance value of trees,the top two are Salix alba(37.623)and Prunus cerasifera f.atropurpurea(26.063); in terms of importance value of bushes,the top three are Ligustrum × vicaryi Hort(22.577),Berberis thunbergii‘atropurpurea Nana'(18.987)and Platycladus orientalis Franco cv.Sieboldii(10.529); in terms of importance value of herbs,the top two are Taraxacum sherriffii(0.915)and Oxalis triangu laris cv.purpurea(0.326).(v)In terms of species abundance of colored-leaf plants,it is in the order of Nyingchi(94)> Lhasa(47)> Qamdo(43)> Shannan(34)> Xigaze(21)> Ali(7)> Nagqu(5).There are great differences between regions: it is highest in Nyingchi while it is lowest in Nagqu.Based on the main problems in the application of colored-leaf plants in Tibet,this paper makes the corresponding recommendations. | Peng ZHOU Hongfeng ZHANG Gang PAN Zhineng LIU | 2017 | Asian Agricultural Research2017，9，2： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员