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| 1 | Influence of polymers on the stability of Gudao crude oil emulsions显示文摘The influence of different types and concentrations of polymers on the stability of Gudao crude oil emulsion was investigated by measuring the volume of water separated from the emulsions and the interfacial shear viscosity of the oil/water interfacial film.Experimental results indicate that the simulated water-in-oil emulsion with 40 mg/L of partially hydrolyzed polyacrylamide(HPAM)3530S could be easily broken by adding demulsifier C and was readily separated into two layers.However, HPAM AX-74H and hydrophobically associating water-soluble polymer(HAP)could stabilize the crude oil emulsion.With increasing concentration of AX-74H and HAP,crude oil emulsions became more stable.Water droplets were loosely packed in the water-in model oil emulsion containing HPAM 3530S, but water droplets were smaller and more closely packed in the emulsion containing AX-74H or HAP.The polymers could be adsorbed on the oil/water interface,thereby increasing the strength of the interfacial film and enhancing the emulsion stability. | Lin Meiqin Zhang Chunling Zong Hua Li Mingyuan Fang Hongbo Guo Jixiang | 2008 | Petroleum Science2008，5，2： | 6 |
| 2 | Monolayer MoS_(2)-based transistors with low contact resistance by inserting ultrathin Al_(2)O_(3)interfacial layer显示文摘Transition metal dichalcogenides(TMDCs)are promising high performance electronic materials due to their interesting semiconductor properties.However,it is acknowledged that the effective electrical contact between TMDCs-layered materials and metals remains one of the major challenges.In this work,the homogeneous monolayer MoS_(2)films with high crystalline quality were prepared by chemical vapor deposition method on SiO2/Si substrates.The back-gate field-effect transistors(FETs)were fabricated by inserting an ultrathin Al_(2)O_(3)interlayer between the metal electrodes and MoS_(2)nanosheets.With the addition of an ultrathin 0.8 nm Al_(2)O_(3)interlayer,the contact resistance decreased dramatically from 59.9 to 1.3 kΩμm and the Schottky barrier height(SBH)dropped from 102 to 27 meV compared with devices without the Al_(2)O_(3)interlayer.At the same time,the switching ratio increased from~106to~108,and both the on-current and field-effect mobility were greatly improved.We find that the ultrathin Al_(2)O_(3)interlayer can not only reduce the SBH to alleviate the Fermi level pinning phenomenon at the interface,but also protect the channel materials from the influence of air and moisture as a covering layer.In addition,the lattice and band structures of Al_(2)O_(3)/MoS_(2)film were calculated and analyzed by first-principles calculation.It is found that the total density of states of the Al_(2)O_(3)/MoS_(2)film exhibits interfacial polarized metals property,which proves the higher carrier transport characteristics.FETs with Al_(2)O_(3)interlayers have excellent stability and repeatability,which can provide effective references for future low power and high performance electronic devices. | CHEN Gang LIN Xin LIU Yuan WANG Fang HU Kai SHAN Xin WU ZeYu ZHANG YuPeng NIE WeiCan ZHONG JiXiang REN TianLing ZHANG KaiLiang | 2023 | Science China(Technological Sciences)2023，66，6： | 2 |
| 3 | Effect of Planting Condition and Time on Survival Rate and Growth of Phragmites australis显示文摘The field trial was established to investigate the effects of planting condition(soil water content,soil buried depth,rhizome length)and time on the survival rate and growth of Phragmites australis rhizomes.The results indicated that survival rate and growth of Phragmites australis were affected by soil water content and rhizome length significantly,but not by soil buried depth.The survival rate of Phragmites australis in moist condition was higher than those in natural and flooding conditions.Rhizomes length did not affect survival rate,height and shoot number,but influenced biomass and buds number,which were higher with 15 cm length than those with 30 cm length.Based on the suitable soil water content(moisture)and rhizome length(15 cm),the survival rate of Phragmites australis was the highest when they were planted in May(91%)comparing to June and July.The number of shoots and buds were the highest in June,which had more suitable temperature and light for Phragmites australis to grow.Therefore,the optimizing transplanting condition of Phragmites australis was that rhizomes of 15 cm with some buds were planted in May with moisture(soil water content). | LI Xiaoyu LIN Jixiang YANG Qun MU Chunsheng | 2015 | 湿地科学2015，13，1： | 2 |
| 4 | The feasibility of using soil seed bank for natural regeneration of degraded sandy grasslands显示文摘Desertification in degraded grasslands is manifested through the development of bare sandy patches,which eventually lead to habitat fragmentation.The ability of these bare sandy patches to regenerate naturally through in-situ soil seed banks is not well understood.To fill this knowledge gap,we randomly selected 24 bare sandy patches with areas ranging from 19 to 898 m^(2) in a desertified grassland of the Horqin sandy land,Northern China to determine whether soil seed bank can be used for natural regeneration of bare sandy patches.Species composition and density of soil seed bank as well as aboveground vegetation composition,abundance and coverage were investigated.We then determined their relationships with in-situ habitat characteristics.Our observations showed that the studied area had low soil seed bank density and species richness,as well as depauperate soil seed bank communities.Consequently,local soil seed bank was not able to provide sufficient seed source for natural regeneration.This was indicated by the relationships between aboveground vegetation,soil seed bank and the in-situ habitat characteristics.For bare patches with an area between 300 m^(2) and 900 m^(2),increase the soil seed bank density and species richness should be the main restoration measures.For bare patches with a small area of less than 50 m^(2),restoration of vegetation density should be the main measure.Our data highlighted that different extents of desertification,indicated by different bare patches,are requiring distinct restoration measures. | Yongcui Wang Lei Chu Zhimin Liu MuSa Ala Jixiang Lin Jianqiang Qian Quanlai Zhou Lixin Wang | 2022 | International Soil and Water Conservation Research2022，10，3： | 1 |
| 5 | Growth and Physiological Response of Organs of Phragmites australis to Different Water Compensation in Degraded Wetlands显示文摘To study the effect of different water compensation on growth and physiology of reed in degraded wetlands,three water treatments in the field were conducted to test the height and photosynthesis of reed,the ions and soluble sugar contents of different organs.In the controls(without extra water compensation for 10 years),the height of reed was only 50 cm,the net photosynthetic rate,stomatal conductance,the intercellular CO2 concentration and transpiration rate were very low.The contents of Na + and Clin rhizome were higher than those in other organs.Discontinuous water compensation(continuous for 8 years,then stopped for 2 years)increased the height(2.1-fold),the net photosynthetic rate(41.8%),stomatal conductance(1.8-fold),transpiration rate(1.3-fold)of reed(Phragmites australis),and decreased the content of Na + (62.3%)and Cl- (71.1%)of rhizome significantly.Continuous water compensation(continuous for 10 years)increased the height(3.2-fold),the net photosynthetic rate(104%),stomatal conductance(2.4-fold),transpiration rate(1.5-fold)of reed,and decreased Na + (82.5%)and Cl - (64.7%)contents in rhizome, then accumulated the K+ ,H2PO4-,SO42- and soluble sugar contents significantly in rhizome.Interrupting water compensation led to the decrease of height(25.3%),the net photosynthetic rate(30.7%),stomatal conductance(17.3%) and increase of Na + (1.16-fold)in rhizome when comparing to the continuous water compensation.These results showed that recovering the degraded reed wetlands needed continuous water compensation yearly to promote reed growth.The organs of reed had corresponding physiological response characteristic to the different water compensation condition.Under long-time dry and waterlogging condition,the rhizomes both helped reed to adapt located environment,by enriching the ions such as Na+ ,Cl- ,and K+ ,H2PO4-,SO42- ,respectively. | LI Xiaoyu LIU Xingtu LI Xiujun LIN Jixiang WEN Bolong | 2012 | 湿地科学2012，10，1： | 1 |
| 6 | Studies on properties of interfacial active fractions from crude and their effect on stability of crude emulsions显示文摘 | Li Mingyuan Guo Jixiang Lin Meiqin | 2006 | J Disp Sci Technol2006，27，5： | 1 |
| 7 | Organic frameworks confined Cu single atoms and nanoclusters for tandem electrocatalytic CO_(2) reduction to methane显示文摘The electrochemical reduction reaction of carbon dioxide(CO_(2)RR)is considered to be an effective way to realize carbon neutrality.As a type of intensively studied materials,covalent organic frameworks(COFs)with a tunable pore structure and various functional groups are promising catalysts for CO_(2)RR.Herein,COF synthesized by 2,6‐diaminoanthraquinone and 2,4,6‐triformylphloroglucinol is employed to assist the synthesis of electrocatalysts from Cu single atoms(SAs)to nanoclusters by controlling the electrodeposition.A tandem catalyst for CO_(2)‐to‐CH4 conversion is thus achieved by the Cu nanoclusters dispersed among the isolated Cu SAs in the COF network.It is proposed that CO_(2) is first reduced to CO over the atomically isolated Cu SAs,followed by diffusion onto the neighboring Cu nanoclusters for further reduction into CH4.In addition,mechanistic analysis suggests that the coordinated K^(+)ions on the COF network promote the activation of CO_(2) and the adsorption of reaction intermediates,thus realizing the suppressed hydrogen evolution reaction and selective production of CH4.This study presents a new insight of COFs for the confined synthesis of a tunable SA to nanocluster electrocatalysts,disclosing the great potential of COFs in electrocatalysis. | Qinglan Zhao Yian Wang Meng Li Shangqian Zhu Tiehuai Li Jixiang Yang Ting Lin Ernest PDelmo Yinuo Wang Juhee Jang Meng Gu Minhua Shao | 2022 | SmartMat2022，3，1： | 1 |
| 8 | Studies on properties of interfacial active fractions from crude and their effect on stability of crude emulsions 显示文摘 | LI MINGYUAN GUO JIXIANG LIN MEIQIN | 2006 | Journal of Dispersion Science and Technology2006，27，： | 1 |
| 9 | Studies on Properties of Interracial Active Fractions from Crude and Their Effect on Stability of Crude Emulsions 显示文摘 | Li Mingyuan Guo Jixiang Lin Meiqin | 2006 | J Dispersion Sci Technol2006，27，3： | 1 |
| 10 | Carbon-coated Ni-Co alloy catalysts:preparation and performance for in-situ aqueous phase hydrodeoxygenation of methyl palmitate to hydrocarbons using methanol as the hydrogen donor显示文摘Carbon-coated Ni,Co and Ni-Co alloy catalysts were prepared by the carbonization of the metal doped resorcinol-formaldehyde resins synthesized by the one-pot extended Stöber method.It was found that the introduction of Co remarkably reduced the carbon microsphere size.The metallic Ni,Co,and Ni-Co alloy particles(mainly 10-12 nm)were uniformly distributed in carbon microspheres.A charge transfer from Ni to Co appeared in the Ni-Co alloy.Compared with those of metallic Ni and Co,the d-band center of the Ni-Co alloy shifted away from and toward the Fermi level,respectively.In the in-situ aqueous phase hydrodeoxygenation of methyl palmitate with methanol as the hydrogen donor at 330℃,the decarbonylation/decarboxylation pathway dominated on all catalysts.The Ni-Co@C catalysts gave higher activity than the Ni@C and Co@C catalysts,and the yields of n-pentadecane and n-C6-n-C16 reached 71.6%and 92.6%,respectively.The excellent performance of Ni-Co@C is attributed to the electronic interactions between Ni and Co and the small carbon microspheres.Due to the confinement effect of carbon,the metal particles showed high resistance to sintering under harsh hydrothermal conditions.Catalyst deactivation is due to the carbonaceous deposition,and the regeneration with CO_(2) recovered the catalyst reactivity. | Yinteng Shi Lin Ai Haonan Shi Xiaoyu Gu Yujun Han Jixiang Chen | 2022 | Frontiers of Chemical Science and Engineering2022，16，4： | 0 |
| 11 | FLUORESCENCE STUDIES ON MORPHOLOGICAL CHANGE OF ST/DVB CROSSLINKED GELS DURING CHLOROMETHYLATION显示文摘The morphological change of St/DVB crosslinked gels during chloromethylation wasstudied by fluorescence spectroscopy using St/DVB crosslinked and hypercrosslinked gels as controlsamples. It has been found that with increase of chlorine content, the excimer emission band (~325nm)approaches to vanish, while the intensity of multi-ring aggregate emission band (~420nm) quicklyreaches a maximum, and then decreases sharply accompanied by appearance ofa new broad bandcentred at ca 488nm which roughly coincides with the typical emission band of hypercrossllinkedSt/DVB gels. Mearwhile, the result of IR measurement suggests that methylene bridge between phenylrings forms and increases with chloromethylation process. These results are explained in terms ofaside reaction of post-crosslinking, which densifies the loosely crosslinked networks and undoes thedensely entangled microgel nuclei. As a result, the morphology of the crosslinked gels becom es morehomogeneous with chloromethylation. | ZHANG Jixiang LI Hexian** WANG Guochang WANG Lin WANG Ying HE Binglin State Key Laboratory of Functional Polymer Materials For Adsorption and Separation and Institute of Polymer Chemistry, Nankai University, Tianjin 300071, China | 2002 | Chinese Journal of Reactive Polymers2002，11，2： | 0 |
| 12 | Green Hydrothermal Synthesis and Applications of Sorbus pohuashanensis/Aronia melanocarpa Extracts Functionalized-Au/Ag/AuAg Nanoparticles显示文摘Nanoparticles(NPs)have already been widely used in catalysis,antibacterial and coating fields.Compared with the traditional toxic and harmful reducing reagents,green synthesis of NPs by using plant extracts is not only environmental-friendly and cost-effective but also conducive to the multi-level and efficient utilization of wild plant resources.In this study,the aqueous extracts from Sorbus pohuashanensis(SP)and Aronia melanocarpa(AM)fruits were used as the reducing and protective reagents for synthesizing Au/AgNPs,with the characteristics of originality operation and high repeatability.The SP/AM fruit extracts functionalized Au/AgNPs were characterized by UV-vis spectroscopy(UV-vis),transmission electron microscopy(TEM),energy dispersive spectroscopy(EDS),scanning electron microscope(SEM),X-ray diffraction(XRD)and Fourier transform infrared spectroscopy(FTIR).UV-vis spectrums showed the NPs peaks verified by the presence between 400–550 nm;TEM and SEM demonstrated NPs displayed approximately spherical structures;EDS confirmed the existence of Au/Ag elements;XRD measurements confirmed that the obtained NPs showed highly crystalline structures;FTIR demonstrated the fruits extracts were adsorbed on the surface of NPs.Primary experiments indicated that SP/AM fruit extracts functionalized-NPs could be used as the reagents for removing the organic dyes efficiently;Zone of inhibition tests(ZOI)explained that NPs have slow-release antibacterial activity. | Jin Huang Jixiang Sun Kai Shao Yamei Lin Zhiguo Liu Yujie Fu Liqiang Mu | 2023 | Journal of Renewable Materials2023，11，4： | 0 |
| 13 | Effect of Alkali on Daqing Crude Oil/Water Interfacial Properties显示文摘Alkaline-surfactant-polymer(ASP)flooding using sodium hydroxide as the alkali component to enhance oil recovery in Daqing Oilfield,northeast China has been successful,but there are new problems in the treatment of produced crude.The alkali added forms stable water-in-crude oil emulsion,hence de-emulsification process is necessary to separate oil and water.The problems in enhanced oil recovery with ASP flooding were investigated in laboratory by using fractions of Daqing crude oil.The oil was separated into aliphatics,aromatics,resin and asphaltene fractions.These fractions were then mixed with an additive-free jet fuel to form model oils.The interfacial properties,such as interfacial tension and interfacial pressure of the systems were also measured,which together with the molecular parameters of the fractions were all used to investigate the problems in the enhanced oil recovery. In our work,it was found that sodium hydroxide solution reacts with the acidic hydrogen in the fractions of crude oil and forms soap-like interfacially active components,which accumulate at the crude oil-water interface. | Guo Jixiang Li Mingyuan Lin Meiqin Wu Zhaoliang | 2007 | Petroleum Science2007，4，1： | 0 |
| 14 | iBP-seq:An efficient and low-cost multiplex targeted genotyping and epigenotyping system显示文摘Inter-and intra-specific variations in phenotype are common and can be associated with genomic mutations as well as epigenomic variation.Profiling both genomic and epigenomic variants is at the core of dissecting phenotypic variation.However,an efficient targeted genotyping and epigenotyping system is lacking.We describe a new multiplex targeted genotyping and epigenotyping system called improved bulked-PCR sequencing(iBP-seq).We employed iBP-seq for the detection of genotypes and methylation levels of dozens of target regions in mixed DNA samples.iBP-seq can be adapted for the construction of linkage maps,fine mapping of quantitative-trait loci,and detection of genome editing mutations at a cost as low as$0.016 per site per sample.We developed an automated bioinformatics pipeline,including primer design,a series of bioinformatic analyses for genotyping and epigenotyping,and visualization of results.iBP-seq and its bioinformatics pipeline,available at http://gffzzd7ca967c75304241h0bf0qco6qw6u6vqc.ffgz.tsg.suse.edu.cn/tools/ibp/,can be adapted to a wide variety of species. | Juan Li Rui Han Ruonan Li Qiang Xu Mingzhu Li Yue Tang Jixiang Li Xi Wang Zhao Li Qing Li Zaiwen Feng Lin Li | 2023 | The Crop Journal2023，11，5： | 0 |
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