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Nano Research 2022年第1期15卷 627-636页

作者： guosheng li Zhuofeng Hu School of Environment Science and Engineering Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation TechnologySun Yat-sen UniversityGuangzhou 510275China College of Environmental and Chemical Engineering Zhaoqing UniversityZhaoqing 526061China State Key Laboratory of Photocatalysis on Energy and Environment College of ChemistryFuzhou UniversityFuzhou 350116China

Coupling two-dimention carbon materials like graphene on photodelectrode can achieve high-efficiency photoelectrochemical ***-up synthesis of carbon-based two-dimensional materials in green media from simple molecules is very attractive but remains a *** is an ideal precursor for the synthesis but previous report requires pyrolysis at high temperature(>700℃).Herein,starting with glucose,we develop a low temperature(210℃)synthesis of carbonaceous nanosheets in aqueous solution of *** the aid of ethylenediamine and Fe3+/Fe27Co27Ni2+ions,the nanosheets can grow on hematite nanorod array with very close ***,a metallic region is formed at the interface due to atom distribution distortion,which can promote the charge *** activity can be greatly enhanced by about 500%due to fast charge *** is much better than that prepared by physically or chemically mixing graphene and hematite(lifetime of charge carrier also increases,as confirmed by ultrafast transient absorption *** method provides more opportunity for simple,mild and cost-effective fabrication of carbon-based two-dimensional by bottom-up method.

关键词： photocatalytic water oxidation hematite two-dimensional carbon bottom-up

Adhesion forces for water/oil droplet and bubble on coking coal surfaces with different roughness

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International Journal of Mining Science and Technology 2021年第4期31卷 681-687页

作者： Chunyun Zhu guosheng li Yaowen Xing Xiahui Gui Chinese National Engineering Research Center of Coal Preparation and Purification China University of Mining and TechnologyXuzhou 221116China School of Chemical Engineering and Technology China University of Mining and TechnologyXuzhou 221116China School of Chemical Engineering and Technology Zhengzhou UniversityZhengzhou 450052China

Surface roughness plays a significant role in floatability of *** the present paper,coking coal surface was polished by three different sandpapers and the surface properties were characterized by contact angle and roughness *** effect of surface roughness on floatability was investigated by adhesion force measurement system for measuring interaction forces between droplets/bubbles and coking coal surfaces with different *** results showed that the contact angle decreased with increasing roughness yet the adhesion force between the water droplet and coal surface increased owing to the increased contact line and the appearance of line *** adhesion forces between water and surfaces were 111.70,125.48,and 136.42μN when the roughness was 0.23,0.98,and 2.79 μm,*** contrast,under a liquid environment,the adhesion forces between air bubble/oil droplet and coal surfaces were decreased with increasing roughness because of the restriction by *** adhesion forces of increasing roughness were 97.14,42.76,and 17.86 μN measured at interfaces between air bubble and coal surfaces and 169.48,145.84,and 121.02 lN between oil droplet and surfaces,*** roughness could be beneficial to the spreading of oil droplets and the adhesion of bubbles which is conducive to flotation separation.

关键词： Adhesion force Water/oil droplet Air bubble Roughness Floatability

Pedotransfer Functions for Estimating Soil Bulk Density:A Case Study in the Three-River Headwater Region of Qinghai Province,China

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Pedosphere 2016年第3期26卷 362-373页

作者： YI Xiangsheng li guosheng YIN Yanyu Agriculture Resource Monitoring Station Chinese Academy of Agricultural Engineering Key Laboratory of Land Surface Pattern and Simulation Institute of Geographical Sciences and Natural Resources ResearchChinese Academy of Sciences Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences

Bulk density(BD) is an important soil physical property and has significant effect on soil water conservation function. Indirect methods, which are called pedotransfer functions(PTFs), have replaced direct measurement and can acquire the missing data of BD during routine soil surveys. In this study, multiple linear regression(MLR) and artificial neuron network(ANN) methods were used to develop PTFs for predicting BD from soil organic carbon(OC), texture and depth in the Three-River Headwater region of Qinghai Province, China. The performances of the developed PTFs were compared with 14 published PTFs using four indexes, the mean error(ME), standard deviation error(SDE), root mean squared error(RMSE) and coefficient of determination(R^2). Results showed that the performances of published PTFs developed using exponential regression were better than those developed using linear regression from OC. Alexander(1980)-B, Alexander(1980)-A and Manrique and Jones(1991)-B PTFs, which had good predictions, could be applied for the soils in the study area. The PTFs developed using MLR(MLR-PTFs) and ANN(ANN-PTFs) had better soil BD predictions than most of published PTFs. The ANN-PTFs had better performances than the MLR-PTFs and their performances could be improved when soil texture and depth were added as predictor variables. The idea of developing PTFs for predicting soil BD in the study area could provide reference for other areas and the results could lay foundation for the estimation of soil water retention and carbon pool.

关键词： alpine soil artificial neural network multiple linear regression organic carbon soil depth soil texture

Advances in the regulation and crosstalks of phytohormones

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Chinese Science Bulletin 2009年第22期54卷 4069-4082页

作者： XIONG guosheng li JiaYang WANG YongHong State Key Laboratory of Plant Genomics and National Center for Plant Gene Research (Beijing) Institute of Genetics and Deve-lopmental Biology Chinese Academy of Sciences Beijing 100101 China

Various mutants defective in phytohormone biosynthesis and signaling pathways have been identified and characterized recently. Functional analysis of corresponding genes has greatly enriched our knowledge of phytohormone biosynthesis, transport, and signal transduction. Moreover, identification of phytohormone receptors and dissection of cross-talks among phytohormones allow us to elucidate the molecular basis of actions of phytohormones. The recent comprehensive work on the regulation of the biosynthesis, transport and signaling of phytohormones will help us to understand phytohormone actions in plant growth and development and their potential application in crop improvement. In this review, we summarize the latest work about phytohormones actions and highlight some common issues in this field.

关键词：激素调节植物激素串扰激素合成信号途径信号转导分子基础生物合成

Experimental study on the dispersion behavior of a microemulsion collector and its mechanism for enhancing low-rank coal flotation

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International Journal of Mining Science and Technology 2023年第7期33卷 893-901页

作者： Fan lian guosheng li Yijun Cao Baoxun Zhao Guangli Zhu Kai Fan School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China School of Material Science and Engineering Zhengzhou UniversityZhengzhou 450001China

As the poor dispersion of oily collectors and the inferior hydrophobicity of the mineral surface, the lowrank coal has an unsatisfactory flotation performance when using traditional collectors. In this paper, an ionic liquid microemulsion was used as a collector to enhance its floatability. Flotation test results demonstrated the microemulsion collector exhibited a superior collecting ability. A satisfactory separation performance of 78.66% combustible material recovery was obtained with the microemulsion collector consumption of 6 kg/t, which was equivalent to the flotation performance of diesel at a dosage of25 kg/t. The dispersion behavior of the microemulsion collector was investigated using the CryogenicTransmission Electron Microscopy. The interaction mechanism of the microemulsion collector on enhancing the low-rank coal flotation was elucidated through the Zeta potential and contact angle measurements, the Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy *** microemulsion collector exhibited superior dispersibility, which was dispersed into positively charged oil droplets with an average size of 160.21 nm in the pulp. Furthermore, the nano-oil droplets could be more efficiently adsorbed on the low-rank coal surface through electrostatic attraction, resulting in the improvement of its hydrophobicity. Thus, the microemulsion collector shows great application potential in improving the flotation performance of low-rank coal.

关键词： Microemulsion Dispersion Nano-oil droplets Flotation Interaction mechanisms

AC-DC Fuzzy linear Active Disturbance Rejection Control Strategy of Front Stage of Bidirectional Converter Based on V2G

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Energy Engineering 2023年第4期120卷 1045-1065页

作者： guosheng li Qingquan Lv Zhenzhen Zhang Haiying Dong School of New Energy and Power Engineering Lanzhou Jiaotong UniversityLanzhou730070China State Grid Gansu Electric Power Research Institute Lanzhou730070China

Aiming at the problems of output voltage fluctuation and current total harmonic distortion(THD)in the front stage totem-pole bridgeless PFC of two-stage V2G(Vehicle to Grid)vehicle-mounted bi-directional converter,a fuzzy linear active disturbance rejection control strategy for V2G front-stage AC-DC power conversion system is ***,the topologicalworkingmode of the totem-pole bridgeless PFC is analyzed,and themathematical model is *** with the system model and the linear active disturbance rejection theory,a double closed-loop controller is designed with the second-order linear active disturbance rejection control as the voltage outer loop and PI control as the current inner *** controller can realize self-adaptive tuning of the proportional gain coefficient of the active disturbance rejection controller through fuzzy reasoning and realize self-adaptive *** and experimental results show that this method can better solve the problems of slow system response and high total harmonic distortion rate of input current and effectively improve the system’s robustness.

关键词： V2G totem-pole bridgeless PFC fuzzy linear auto disturbance rejection robustness

Effect of a cyclonic flotation column on the separation of magnesium from phosphate ore

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Mining Science and Technology 2011年第5期21卷 647-650页

作者： li guosheng liu Jiongtian Cao Yijun Wang Dapeng School of Chemical Engineering and Technology China University of Mining ＆ Technology Xuzhou 221008 China

This study was performed to investigate the effects of the cyclonic separation mechanism on the removal of magnesium from phosphate ore. An analysis of the particle-bubble collision mechanism in a cyclonic force field was used to design two different pulp circulation systems for a cyclonic-static micro-bubble flotation column （FCSMC）. Experiments comparing the two conditions were then conducted. Size analysis of the feed and separated products was conducted with a BXF cyclone size analyzer. The results show that about 34.60% of the total MgO content in the feed exists in the -10 μm fraction. This demonstrates that magnesium removal from phosphate ore has the characteristics of a micro-fine particle flotation problem. Under conditions of cyclonic circulation the MgO level of the concentrate is 1.74g, which is lower than that obtained from the column operated in direct-flow circulation by 0.34%, These results indicate that the cyclonic circulation mechanism of the FCSMC can promote removal of micro-fine particles containing magnesium. This is attributed to the function of surface flotation and to the reduction of the lower separation limit under conditions of cyclonic circulation.

关键词： Flotation columnCyclonic separationPhosphate oreRemoval of magnesium

Genetic transformation of calli from maize and regeneration of herbicide-resistant plantlets

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Chinese Science Bulletin 2001年第7期46卷 563-565页

作者： li guosheng YANG Aifang ZHANG Juren BI Yuping SHAN Lei School of life Science Shandong UniversityJinan 250100China Biotechnique Research Center Shandong Agriculture Science InstituteJinan 250100China

The herbicide-resistant gene als of Arabidopsis thaliana has been transferred into embryonic calli of maize by microprojectile bombardment. We have obtained chlor-sulfuron-resistant calli and regenerated plantlets through selection by herbicide chlorsulfuron. The results of PCR analysis and Southern blotting indicate that gene als has been transferred into some plantlets. The test of spraying chlorsulfuron indicated that the transgenic plantlets had favorable herbicide-resistant trait. The purpose of the research was to obtain chiorsulfuron-resistant transgenic maize and hope that this kind of high efficient herbicide could be widely used in rotation soil of wheat and maize. In addition, through spraying herbicide, we could eliminate the hybrid plants and thereby increase the purity of F1 seeds.

关键词： maize genetic transformation als chlorsulfuron.

Characteristics of Upper Mantle Activity in the South China Sea Region and the Indochina Mantle Plume

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Acta Geologica Sinica(English Edition) 1999年第4期73卷 464-476页

作者： WU Nengyou ZENG Weijun li Zhenwu CHEN Yizhong WEN Xiwen DU Deli li guosheng Guangzhou Marine Geological Survey MGMR PO Box 1180 Guangzhou 510760

Abstract According to computed results of the mantle traction field beneath the lithosphere based on satellite-modelled gravity anomalies of different degrees, it has been revealed that the three types of mantle convection on different scales existing in the South China Sea region is the key factor controlling the geodynamics. The mantle convection models on large and middle scales have been proved by natural seismic S-wave tomographic data and interpreted by using the present mantle plume concept. In consideration of other relevant geological and geophysical data, the authors put emphasis on discussing the expression form, origin and age of the Indochina mantle plume and its important effect on the conversion of organic matter and hydrocarbon accumulation in Cenozoic basins.

关键词： mantle traction field South China Sea region Indochina mantle plume conversion of organic matter hydrocarbon accumulation

Study of attenuation depths for MODIS bands in the Bohai Sea in China

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Acta Oceanologica Sinica 2009年第5期28卷 39-48页

作者： liU Ying li guosheng Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Science Beijing 100101 China Xinjiang Institute of Ecology and Geogrphy Chinese Academy of Science Urumqi 830011 China

An attenuation depth is defined for remote sensing purposes as a depth above which 90% of the arising light leaving the water surface is originated. The deeper the attenuation depth, the more information of water is detectable by remote sensing, then the more precise information of water is extracted. Meanwhile, the attenuation depth is helpful to know water layer （by its thickness） from which remote sensing will be able to extract information. A number of investigators are using the moderate resolution imaging spectroradiometer （or MODIS） for remote sensing of ocean color. It is necessary to have a rough idea of the effective attenuation depth of imagery in each of the spectral bands employed by the MODIS. The attenuation depth is directly determined from MODIS data. Though analyzing the spectral distribution of the attenuation depth on 7 August 2003 and the seasonal variation of the attenuation depth （551 nm） in the Bohai Sea indicated that： the spectral distribution of the attenuation depth for the spectral range between 400 to 700 nm is single-peak curve, and it’s similar and difference in different regions is consistent with other scholars’ results of zoning, moreover, it supports the Bohai Sea is Case 2 water; the maximum attenuation depth shifts toward longer wavelengths, liking the red shift, with increase of turbidity of water, just like the maximum attenuation depth in the outside of the northwest coast of the Bohai Sea and the Bohai Strait is at 531nm, in the central of the Bohai Sea is at 551nm, in the region controlled by the Huanghe （Yellow） River, the region impacted by the old Huanghe River, the western side of the liaodong Bay and the eastern side of the liaodong Bay is at 555 nm; the seasonal change of the attenuation depth is the largest in the summer, followed by the fall, and the ranking of winter and spring in different regions is distinct. The attenuation depth in different regions is dissimilar： the order of the attenuation depth in different

关键词： attenuation depth MODIS Bohai Sea