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44篇 您的检索式:作者名="ZHOU HongPing"
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1Interaction of polyhydroxy fullerenes with ferrihydrite:adsorption and aggregation显示文摘The rapid development of nanoscience and nanotechnology, with thousands types of nanomaterials being produced, will lead to various environmental impacts. Thus,understanding the behaviors and fate of these nanomaterials is essential. This study focused on the interaction between polyhydroxy fullerenes(PHF) and ferrihydrite(Fh), a widespread iron(oxyhydr)oxide nanomineral and geosorbent. Our results showed that PHF were effectively adsorbed by Fh. The adsorption isotherm fitted the D-R model well, with an adsorption capacity of 67.1 mg/g. The adsorption mean free energy of 10.72 k J/mol suggested that PHF were chemisorbed on Fh. An increase in the solution p H and a decrease of the Fh surface zeta potential were observed after the adsorption of PHF on Fh; moreover, increasing initial solution p H led to a reduction of adsorption. The Fourier transform infrared spectra detected a red shift of C–O stretching from 1075 to 1062 cm-1 and a decrease of Fe–O bending, implying the interaction between PHF oxygenic functional groups and Fh surface hydroxyls. On the other hand, PHF affected the aggregation and reactivity of Fh by changing its surface physicochemical properties. Aggregation of PHF and Fh with individual particle sizes increasing from 2 nm to larger than 5 nm was measured by atomic force microscopy. The uniform distribution of C and Fe suggested that the aggregates of Fh were possibly bridged by PHF. Our results indicated that the interaction between PHF and Fh could evidently influence the migration of PHF, as well as the aggregation and reactivity of Fh.Jing Liu Runliang Zhu Tianyuan Xu Mingwang Laipan Yanping Zhu Qing Zhou Jianxi Zhu Hongping He 2018Journal of Environmental Sciences2018,30,2:5
2System-Level EMC Assessment for Military Vehicular Communication Systems Based on a Modified Four-Level Assessment Model显示文摘With the development of EMC technology, EMC assessment has become increasingly important in EMC design. Although numerous EMC assessment models are available today, few of them can provide a tradeoff between efficiency and accuracy for the specific case of military vehicular communication systems. Face to this situation, a modified four-level assessment model is proposed in the paper. First, the development of EMC assessment technology is briefly reviewed, and the theoretical mechanism of EMI environment is introduced. Then, the architecture of the proposed model is outlined, and the assessment methods are explored. To demonstrate the application of it, an example involving a communication system in a military vehicle is presented. From the physical layer to the signal layer, a hierarchical assessment on the entire system is successfully performed based on the proposed model, and we can make a qualitative EMC assessment on the EMC performance of the system. Based on a comparison with the traditional model, we conclude that the proposed model is more accurate, more efficient and less time-consuming, which is suitable for the EMC assessment on militaryvehicular communication systems. We hope that the proposed model will serve as a useful reference for system-level EMC assessments for other systems.Ping Zhou Yinghua Lv Zhihong Chen Hongping Xu 2018China Communications2018,15,8:5
3TiO_2/Schwertmannite nanocomposites as superior co-catalysts in heterogeneous photo-Fenton process显示文摘The heterogeneous photo-Fenton reaction is an effective technique in combating organic contaminants for both soil and water remediation,and extensive studies have focused on enhancing its efficiency and reducing its costs.In this work,we developed novel photoFenton catalysts by simply milling commercially available TiO_2(P25)with Schwertmannite(Sh),a natural iron-oxyhydroxysulfate nanomineral.We expect that the photo-generated electrons from TiO_2could continuously migrate to Sh,which then could enhance the separation of electron-hole pairs on TiO_2and accelerate the reduction of Fe(III)to Fe(II)on Sh,leading to high degradation efficiency of the target organic contaminants.SEM and TEM results showed the distribution of TiO_2on Sh surface for the nanocomposites(TiO_2/Sh).Under simulated sunlight irradiation,the much higher content of Fe(II)was determined on TiO_2/Sh than on Sh via a common method in the iron ore,and the consumption of H_2O_2and the production of·OH were more significant in the TiO_2/Sh system than those in the TiO_2and Sh systems.These results well support our hypothesis that the photo-generated electrons could migrate from TiO_2to Sh on the composites,and can also explain the much higher degradation efficiency of Rhodamine B(RhB)in the TiO_2/Sh system.Besides,TiO_2/Sh had lower Fe dissolution as compared with Sh,and retained high catalytic stability after four repeated cycles.Above merits of the TiO_2/Sh composites,in combining with their simple synthesis method and low-cost property,indicated that they should have promising applications as heterogeneous photo-Fenton catalysts.Yanping Zhu Chun Zeng Runliang Zhu Yin Xu Xingyan Wang Huijun Zhou Jianxi Zhu Hongping He 2019Journal of Environmental Sciences2019,31,6:5
4Investigating the Effectiveness of Road-related Mitigation Measures under Semi-controlled Conditions:A Case Study on Asian Amphibians显示文摘Road traffic is the main factor causing the decline in amphibian populations worldwide. The proper design of an amphibian tunnel is one of the most efficient measures to mitigate the negative impacts of road traffic on amphibians. However, no study has investigated the effectiveness of amphibian tunnels under semi-controlled conditions in Asian amphibians. Here, we selected two representative amphibian species, the Chinese brown frog, Rana chensinensis, and the Asiatic toad, Bufo gargarizans, which suffer the most severe road mortality along the roads in Northeast China. We placed experimental arrays of culverts of various sizes(diameters of 1.5, 1, and 0.5 m for circular culverts; side lengths of 1.5, 1, and 0.5 m for box culverts), and substrate type(soil, concrete, and metal) to examine the preferences of both species during the migratory season between May and September in 2016 and 2017. The results revealed that the Chinese brown frog preferred mid-and large-sized culverts as well as soil culverts. We concluded that culverts with a side length ≥ 1 m, lined with soil, and accompanied by a ≥ 0.4 m high guide drift fence and ≤ 45° gradient on the roadside ditch wall would best facilitate road crossings for both species and likely for other amphibian species in Northeast China.Yun WANG Jiayu LAN Hongping ZHOU Lei GUAN Yudi WANG Yongshun HAN Jiapeng QU Syed Asifullah SHAH Yaping KONG 2019Asian Herpetological Research2019,10,1:4
5Thermochemical Sulfate Reduction in the Tazhong District,Tarim Basin,Northeast China:Evidence from Formation Water and Natural Gas Geochemistry显示文摘形成水和天然气地球化学在的系统的分析中央在迟了的阶段的煤气的侵略被天然气的 H2S 和 CO2 的内容的增加伴随的 Tarim 盆( CUTB )表演高举,由形成高全部的溶解固体形成流水,由 HCO 的内容的增加? 3 ,相对 Cl ?,由第二家庭离子的增加(Ca2+,Mg2+,Sr2+和Ba2+)并且由 SO2 的内容的减少? 4 ,相对 Cl ?。上述现象能仅仅由 thermochemical 硫酸盐减小(TSR ) 的方法被解释。TSR 经常发生在油和水的转变地区并且经常在下列反应公式被描述:CH+CaSO4+H-2OH2S+CO2+CaCO3。(1 ) 溶解了 SO2 ? 当 H2S 和 CO2 被产生时, 4 在上述反应在形成水里被消费,导致 SO2 的减少 ? 4 在形成水和在天然气的 H2S 和 CO2 的增加里。如果形成水存在,产生 CO2 将继续与碳酸盐反应形成酸式碳酸盐,它能在形成水里被溶解,因此导致 Ca2+ 和 HCO 的丰富 ? 3。上述反应能被下列方程描述:CO2+H2O+CaCO3Ca2++2HCO ? 3。在 CUTB 的寒武纪、更低的奥陶纪的 stratigraphic 温度超过了 120 整瑣湯捩栠獩潴祲漠?桚橥慩杮?畆楪湡?湡?楊湡硧?牰癯湩散?景猠畯桴?楨慮椠?浩潰瑲湡?潦?湵敤獲慴摮湩?桴?整瑣湯捩攠潶畬楴湯漠?潓瑵?桃湩?畢?瑩?慭浧瑡捩愠瑣癩瑩?瀠瑥潲敧敮楳?猠牴瑡杩慲桰捩猠煥敵据?景琠敨?浡慩獮慨?片畯?獩猠楴汬猠牴湯汧?潣瑮潲敶獲慩??牥?敷瀠敲敳瑮渠睥猠湥楳楴敶栠杩?敲潳畬楴湯椠湯洠捩潲瀭潲敢???偍??A稠物潣?敧'覡睖珱K杯捩污搠瑡?潦?桴?慍業湡桳湡?潲灵愠摮瀠瑥潲牧灡楨慣?慤慴琠?潣獮牴楡?桴?...桴?XIANG Caifu PANG Xiongqi WANG Jianzhong LI Qiming WANG Hongping ZHOU Changqian YANG Haijun 2010Acta Geologica Sinica(English Edition)2010,84,2:4
6Simulation analysis on co-site interference of vehicular digital communication system based on IM prediction method by BER显示文摘The co-site interference exists in kinds of communication systems, especially in digital communication systems, also is one of the biggest threats in electromagnetic compatibility(EMC) designation of the systems. Analyzing the co-site interference is an important process in achieving EMC performance of the system. Under the situation, the co-site interference simulation analysis of a vehicular digital communication system based on interference margin(IM) prediction method by bit error ratio(BER) was proposed in the paper. In the simulation analysis, some physical models of the vehicular communication system were established on SIMULINK environment, the upper limit of BER level for audio signals was defined as the IM, three different types of co-site interference was analyzed respectively, and the simulation results were obtained in the form of system interference bandwidth. From these results, the EMC performance evaluation of the vehicular communication system was predicted based on the IM prediction method. By comparing with the actual test results, the correctness of the simulation results was validated and the simulation analysis method can be used for reference by other communication systems was indicated.Zhou Ping Lu Yinghua Tao Yong Xu Hongping 2016The Journal of China Universities of Posts and Telecommunications2016,23,1:4
7Simple synthesis of sandwich-like SnSe2/rGO as high initial coulombic efficiency and high stability anode for sodium-ion batteries显示文摘Metal selenides owing to their high theoretical capacity and good conductivity are considered as one of the potential candidates for the anode materials of sodium-ion batteries(SIBs).However,their practical applications are greatly restricted by the poor cycling performances and complicated synthesis methods.In this work,a sandwich-like Sn Se2/reduced graphene oxide(r GO)composite with a small amount of r GO(7.3%)is synthesized by a simple one-pot solvothermal technique.The as-synthesized Sn Se2/r GO shows improved initial coulombic efficiency(ICE)of 73.7%,high capacity of 402.0 m Ah g-1 after 150 cycles at 0.1 A g-1 with a retention of 86.2%and outstanding rate performances.The abundant Sn-O-C bonds of synthesized material not only accelerate the charge transfer at the interface but also enhance the mechanical strength to accommodate volume variation and prevent active material loss during cycling.Moreover,the compact structure leads to thin solid electrolyte interface(SEI)so that high initial coulombic efficiency was obtained.Furthermore,full cells are assembled to test its potential application.This work offers a simple method to synthesize Sn Se2/r GO as a candidate anode for SIBs.Tingting Wang Kaiwei Yang Juan Shi Shangrui Zhou Liwei Mi Hongping Li Weihua Chen 2020Journal of Energy Chemistry2020,29,7:4
8Synthesis,photophysical properties and TD-DFT calculation of four two-photon absorbing triphenylamine derivatives显示文摘In this study,linear absorption,single-photon excited fluorescence,fluorescence quantum yields,fluorescence lifetime and two-photon excited fluorescence of a series of triphenylamine derivatives (L1,L2,L3 and L4) have been measured.L1 and L3 are D--A type dyes,while L2 and L4 are D--D--A type dyes (D=donor,A=acceptor).The investigated compounds consist of triphenylamine-bearing donor-substituted and/or systematically extended-conjugated length,which are designed to gain insight into the effect of the ethoxyl unit and-linkage length on the linear and nonlinear optical properties.The influence of solvent polarity on the photophysical properties was investigated.Employing time-dependent density functional theory (TD-DFT) calculations,the structure-property relationships are discussed.KONG Lin YANG JiaXiang ZHOU HongPing LI ShengLi HAO FuYing ZHANG Qiong TU YuLong WU JieYing XUE ZhaoMing TIAN YuPeng 2013Science China Chemistry2013,56,1:3
9Identification and Characterization of Drought Stress-Responsive Novel microRNAs in Dongxiang Wild Rice显示文摘MicroRNAs(miRNAs) are non-coding small RNAs, which play important regulatory roles in response to biotic and abiotic stresses. Dongxiang wild rice(Oryza rufipogon, DXWR) can survive in extreme drought environment, but its molecular mechanism of drought resistance is still largely unknown. To further explore miRNA regulatory mechanisms involved in drought resistance, we identified 138 novel miRNAs in DXWR using small RNA sequencing and bioinformatics approaches, and found that the expression levels of 67 novel miRNAs were significantly affected by drought stress. In total, 200 candidate target genes were predicted and annotated for the drought stress-responsive novel miRNAs. Gene Ontology(GO) analysis and Kyoto Encyclopedia of Genes and Genomes(KEGG) pathways suggested that most of the target genes were related to metabolism. Stem-loop quantitative real-time PCR(qRT-PCR) results exhibited high concordance with sequencing data, which confirmed that miRNA expression patterns based on small RNA sequencing in the present study were reliable. Meanwhile, qRT-PCR validated the inverse expression patterns between several miRNAs and their target genes. These results will enhance our understanding of miRNA regulatory mechanisms in response to drought stress in DXWR, and can serve as an important reference for the protection and utilization of this valuable genetic resource.ZHANG Fantao LUO Yuan ZHANG Meng ZHOU Yi CHEN Hongping HU Biaolin XIE Jiankun 2018Rice science2018,25,4:3
10Reliable and Efficient Agrobacterium tumefaciens-Mediated Genetic Transformation of Dianthus spiculifolius显示文摘Dianthus spiculifolius is a perennial herbaceous flower with strong environmental adaptability and is an important ornamental ground cover plant.In this study,seeds of D.spiculifolius were used as explants for callus induction,adventitious bud differentiation,and rooting by adding different concentrations of 2,4-dichlorophenoxyacetic acid(2,4-D),6-benzyl aminopurine(6-BA),and naphthaleneacetic acid(NAA)to Murashige and Skoog medium.The calli generated were co-cultured with Agrobacterium tumefaciens EHA105 containing pBI121-GUS or pBI121-GFP plasmids for 30 min,and transgenic regenerated plants were obtained by kanamycin(30mg·L^−1)screening.RT-PCR confirmed the stable expression of the exogenous GUS and GFP genes in the D.spiculifolius.Theβ-glucuronidase(GUS)histochemical staining confirmed GUS gene expression in transgenic calli,adventitious buds,and regenerated plants of D.spiculifolius.The green fluorescent protein(GFP)visual analysis showed GFP gene expression in transgenic calli.Furthermore,subcellular localization analysis showed that the three organelle marker proteins were not only successfully expressed but also accurately localized to their corresponding organelles in D.spiculifolius callus cells.These results indicated a successful establishment of a reliable and efficient A.tumefaciens-mediated genetic transformation system,which will contribute to functional gene research and genetic improvement of D.spiculifolius.Jingang Wang Shiyue Liu Hongping Ma Ye Tao Shuang Feng Shufang Gong Jinzhu Zhang Aimin Zhou 2020Horticultural Plant Journal2020,6,3:2
11Two novel terpyridine-based chromophores with donor-acceptor structural model containing modified triphenylamine moiety: Synthesis, crystal structures and two-photon absorption properties显示文摘Two novel terpyridine-based chromophores with D-A (D = donor, A = acceptor) structural model containing modified triphenylamine moiety (L1 and L2 ) have been conveniently synthesized via formylation and reduction in satisfactory yields, and fully characterized. The single crystals of them were obtained and determined by X-ray diffraction analysis. The relationships between structure and photophysical properties of the two chromophores were investigated both experimentally and theoretically. The measured maximum TPA cross-sections per molecular weight (δmax /MW) of the chromophores are 0.63 GM/(g mol) (L1) and 0.72 GM/(g mol) (L2), respectively, in DMF as a high polar solvent. The results indicate that the value of δmax/MW could be well tuned by the intramolecular charge transfer (ICT), which could be realized by introducing additional elecron-donor/acceptor groups.LIU Jie ZHANG Qiong DING HongJuan ZHANG Jun TAN JingYun WANG ChuanKui WU JieYing LI ShengLi ZHOU HongPing YANG JiaXiang TIAN YuPeng 2013Science China Chemistry2013,56,9:2
121D chain Cd( Ⅱ ) and Co( Ⅱ ) coordination polymers: synthesis, crystal structures and luminescence properties 显示文摘Sun Mei Wang Peng Zhou Hongping 2008J Mol Struct2008,873,123:1
13Existence of Positive Solutions of the Fourth Order Three-Point Boundary Value Problem 显示文摘ZHOU Shaolin WU Hongping HAN Xiaoling 2014Journal of Sichuan University (Natural Science Edition)2014,51,1:1
14EXISTENCE OF POSITIVE SOLUTIONS TO A SINGULAR THIRD-ORDER THREE-POINT BOUNDARY VALUE PROBLEM显示文摘In this paper, we study a singular third-order three-point boundary value problem. By using a fixed-point theorem of cone expansion-compression type,we establish results on the existence of at least one, at least two, and n positive solutions to the boundary value problem. Finally we give an example.Hongping Wu Shaolin Zhou 2017Annals of Applied Mathematics2017,33,2:1
15Numerical simulation and experiment validation on lightning-induced effects of a special vehicle显示文摘In recent years, with the development of the system integration technology, the outside integrative special vehicles, such as big oil tank, trucks loading with dangerous goods and so on, are becoming more and more important. When the vehicle is under way, it will inevitably encounter the nature environment, including lightning. If the lightning strikes directly or very close to the vehicle, the lightning-induced effects will be very destructive. Therefore, for a better understanding of the lightning-induced effects produced on the special vehicle by the lightning strike, the research on lightning-induced effects of a special vehicle for aerospace system transportation was proposed. In the paper, a numerical simulation model for the special vehicle is established, the lightning-induced effects are analyzed successfully by using tramsmission-line matrix(TLM) algorithm, and the experiment validation example is also implemented. By comparing the numerical simulation with the actual experiment results, the correctness trend of the numerical simulation is validated and a mass of invaluable research data is obtained, which has a deep significance on the lightning research in our country.Zhou Ping Lv Yinghua Tao Yong Xu Hongping 2016The Journal of China Universities of Posts and Telecommunications2016,23,3:1
16Synthesis,structure and nonlinear optical properties of two novel two-photon absorption chromophores显示文摘Two triphenylamine-based derivatives that can be used as two-photon absorption chromophore,tris{4-[4-(3-trifluoromethyl-3-oxopanoyl)]phenyl}amine (1) and tris{4-[4-(3-phenyl-3-oxopanoyl)] phenyl} amine (2) were successfully synthesized and fully characterized by elemental analysis,IR,1H NMR and MS. The single crystal X-ray diffraction analysis showed that the molecules possess D-(π-A)3 structures. One-and two-photon absorption and fluorescence in various solvents were experimentally investigated. A data recording experiment proved the potential application of these chromophores.CHENG LeHua LI Lin SUN PingPing ZHOU HongPing TIAN YuPeng TANG HuoHong 2009Science China Chemistry2009,52,4:1
17Finite Element Analysis for Eccentric-block of the Forest-fruit Vi- bration Harvest Machine 显示文摘Changqin Wang Linyun Xu Hongping Zhou 2011Forestry & Agriculture Ercgir- ceerircg arcd Computer Science2011,,2:1
18Investigation of structure and thermal stability of surfactant-modified Al-pillared montmorillonite显示文摘Lingya Ma Qing Zhou Tian Li Qi Tao Jianxi Zhu Peng Yuan Runliang Zhu Hongping He 2014Journal of Thermal Analysis and Calorimetry2014,,1:1
19An EAR-motif- containing ERF transcription factor affects herbivore-induced signaling, defense and resistance in rice 显示文摘Lu Jing Ju Hongping Zhou Guoxin 2011The Plant Jour- nal2011,68,4:1
20Synthesis, crystal structures and electrochemical properties of two new metal-centered ferrocene complexes显示文摘Two new metal-centered ferrocene complexes Ni(SCN)2(L)4 (1) and Cu(OAc)2(L)2 (2) (L = 1-[1-ferro- cenylmethyl]imidazole) have been synthesized and characterized by elemental analysis, single crystal X-ray diffraction analysis, spectroscopic and cyclic voltammetric measurements. The geometry of Ni(Ⅱ) in 1 is octahedral, with four ligands in the equatorial plan and two thiocyanate anions at the axial site, while that of Cu(Ⅱ) in 2 is a distorted octahedron formed by two chealted OAc- and two ligands. Single crystal X-ray diffraction studies reveal that there is partial electron delocalization from ferrocene to imidazole in the two complexes. Electrochemical measurements exhibit that complexes 1 and 2 un-dergo similar reversible one electron redox processes, suggesting that the ferrocene moieties are equivalent and there are no interactions among them.WANG XuChun WU JieYing ZHOU HongPing TIAN YuPeng LI Lin YANG JiaXiang JIN BaoKang ZHANG ShengYi 2009Science China Chemistry2009,52,7:1
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