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| 1 | Enhancing the leaching effect of an ion-absorbed rare earth ore by ameliorating the seepage effect with sodium dodecyl sulfate surfactant显示文摘Ameliorating the problem of low leaching efficiency,long leaching period,and high agent consumption should be studied to efficiently exploit ion-absorbed rare earth ore resources.In this study,the surfactant sodium dodecyl sulfate(SDS) is used to enhance the leaching effect of an ion-absorbed rare earth ore by ameliorating the seepage effect for the first time.The effects of surfactant concentration,leaching agent dosage,solution flow velocity,and solution pH on the leaching rate were explored,and the mechanism of SDS was discussed.Under the optimum conditions,the addition of a small amount of SDS(mass fraction0.04%) can increase the leaching rate by about 5%,shorten the leaching period,and reduce the consumption of the leaching agent.SDS significantly ameliorates the seepage effect of the ore body by reducing the surface tension of the leaching agent and ameliorating the wettability of the mineral surface.This effect is the main factor that improves the leaching efficiency.DFT(density functional theory) calculation results show that SDS can react with rare earth ions,which reduces the adsorption strength on clay mineral surfaces.Hence,rare earth ions are easily exchanged by ammonium ions,and mass transfer is enhanced. | Yongbing Zhang Boyuan Zhang Siqi Yang Zhigang Zhong Hepeng Zhou Xianping Luo | 2021 | International Journal of Mining Science and Technology2021,31,6: | 8 |
| 2 | Pore structure characterization and seepage analysis of ionic rare earth orebodies based on computed tomography images显示文摘Pore network structure of ore body is a diffusion channel of leaching agent solution that exerts a significant influence on seepage.The ore body structure,pore distribution,pore and throat size,and pore network characteristics of topsoil,weathered,and semiweathered layers of ionic rare earth ore in southern Jiangxi Province were explored in this study.The effect of leaching operation on the pore structure was investigated,and main factors affecting the seepage were analyzed.Results showed that the semiweathered layer presents a dense structure and a small number of unconnected pores.Pores of topsoil and weathered layers are mainly long and narrow column openings with some planar fractures.Even pore distribution and large size span were observed.Compared with the weathered layer,the topsoil layer demonstrates larger voids,smaller average pore volume and equivalent radius,and fewer coordination throats;however,the average equivalent radius of the throat in the topsoil layer is larger and largescale channels exist through ore body vertically.Hence,permeability of the topsoil layer is significantly higher than that of the weathered layer.Colloidal clay minerals migrate easily and the occurrence of silting in the small porosity blocks the throat and significantly decreases the permeability of the ore body in the leaching process.The equivalent radius of the throat is the key to the seepage.Reducing the migration of fine particles is an effective measure to protect the throat and shorten the leaching period. | Xianping Luo Yongbing Zhang Hepeng Zhou Kunzhong He Boyuan Zhang Dongming Zhang Weijing Xiao | 2022 | International Journal of Mining Science and Technology2022,32,2: | 5 |
| 3 | Telmisartan promotes proliferation and differentiation of endothelial progenitor cells via activation of Akt显示文摘 | Cao Zheng Yang Yong Hua Xianping Wu Ruixia Wang Junfeng Zhou Ming Zhan Zhongqun Chen Pingying | 2014 | Chinese Medical Journal2014,,1: | 5 |
| 4 | Detection and Initial Response to a Type 2 Vaccine-Derived Poliovirus—Sichuan Province,China,2019显示文摘What is already known about this topic?After the type 2 strain of the live,attenuated poliovirus vaccine was withdrawn globally in 2016,any identification of a type 2 poliovirus is a Public Health Emergency of International Concern.A vaccinederived type 2 poliovirus(VDPV2)was identified in Sichuan,prompting an urgent,comprehensive investigation and response.What is added by this report?Type 2 monovalent,live,attenuated oral poliovirus vaccine(mOPV2)is being used to respond to the numerous VDPV2 outbreaks seen around the world.In contrast,the response in Sichuan used Sabin strain inactivated poliovirus(sIPV)to stop circulation of the VDPV2.In the 6 months following the vaccination response,there have been no VDPV2s detected in Sichuan,despite extensive search.What are the implications for public health practices?Further search for the VDPV2 must continue in order to determine whether transmission has been stopped.The ongoing investigation and response to the Sichuan VDPV2 is providing evidence to the Global Polio Eradication Initiative on managing VDPV2 outbreaks. | Jiushun Zhou Ning Wen Yong Zhang Qi Qi Chunxiang Fan Dongmei Yan Xiaoping Zhu Lixin Hao Shuangli Zhu Yu Liu Xiaozhen Ma Chao Ma Lei Nan Yong Chen Qianli Ma Cheng Wang Kun Deng Lei Cao Ge Shao Xianxiang Ding Hong Yang Zhijie An Lance ERodewald Aiqiang Xu Huaqing Wang Zijian Feng Zundong Yin Xianping Wu Wenbo Xu | 2020 | China CDC weekly2020,2,11: | 3 |
| 5 | Towards a Component Framework for Architecture-Based Self-Adaptive Applications显示文摘Self-adaptive software is an efficient way to cope with highly dynamic nature of the environment where it is situated. In this paper, from the perspective of software architecture, we propose a component framework for supporting the architecture-based design and development of self-adaptive applications. It captures some key elements of the research on software architecture and provides more flexible facilities to decouple interacting components. Based on that, a prototype is implemented to demonstrate its feasibility, and at last a case study is presented to illustrate our framework. | ZHOU Yu MA Xiaoxing TAO Xianping LU Jian | 2006 | Wuhan University Journal of Natural Sciences2006,11,5: | 1 |
| 6 | Insights into the floatability between spodumene and albite from crystal chemistry standpoint显示文摘Spodumene is a silicate mineral rich in lithium.However,the gangue mineral,albite has similar crystal chemical structure and composition to spodumene.In this work,the density functional theory(DFT)calculation was taken to research the floatability from the perspective of crystal chemistry.And contact angle test and reagent adsorption test were used to support the simulation results.In addition,the weighted total density of broken bonds is proposed for the first time to judge the generation probability of cleavage surface.The DFT calculation results display that the Na and Al sites on the albite surface are the adsorption sites of water molecules.While the water molecules only bond with Al atom on the surface of spodumene and each Al site can adsorb only one water molecule.Thus,the wetting effect of water molecules on the albite surface is stronger than that of spodumene.This is consistent with the result of contact angle.In sodium oleate system,the oleic acid anion is adsorbed on the spodumene surface in form of a multicomponent ring while the albite is a single ring.Theoretically,oleic acid anion can be strongly adsorbed on the surface of spodumene and albite under vacuum.The adsorption strength of spodumene is higher than that of albite.However,on hydrated surface,the adsorption strength of oleic acid anion on mineral surface is greatly reduced due to the interaction between water molecules and metal site on mineral surface.Thus,spodumene and albite are hard to float without external activated ions in sodium oleate system. | Hepeng Zhou Fanxin Xie Yongbing Zhang Boyuan Zhang Siqi Yang Xianping Luo | 2022 | International Journal of Mining Science and Technology2022,32,6: | 1 |
| 7 | Optimal stopping investment in a logarithmic utility-based portfolio selection problem显示文摘Background:In this paper,we study the right time for an investor to stop the investment over a given investment horizon so as to obtain as close to the highest possible wealth as possible,according to a Logarithmic utility-maximization objective involving the portfolio in the drift and volatility terms.The problem is formulated as an optimal stopping problem,although it is non-standard in the sense that the maximum wealth involved is not adapted to the information generated over time.Methods:By delicate stochastic analysis,the problem is converted to a standard optimal stopping one involving adapted processes.Results:Numerical examples shed light on the efficiency of the theoretical results.Conclusion:Our investment problem,which includes the portfolio in the drift and volatility terms of the dynamic systems,makes the problem including multi-dimensional financial assets more realistic and meaningful. | Xun Li Xianping Wu Wenxin Zhou | 2017 | Financial Innovation2017,3,1: | 1 |
| 8 | Variation of Color and Ray Pattern in Juvenile Shells in Hatchery‐produced Freshwater Triangle Pearl Mussels, Hyriopsis cumingii , in China显示文摘 | Haibo Wen Ruobo Gu Zheming Cao Xin Zhou Zhijuan Nie Xianping Ge Pao Xu Xin Zhou Zhijuan Nie Xianping Ge Pao Xu Dan Hua | 2013 | J World Aquacult Soc2013,,1: | 1 |
| 9 | siRNA?induced ABCE1 silencing inhibits proliferation and invasion ofbreast cancer cells显示文摘 | Bo Huang Hongli Zhou Xianping Lang Zhiliang Liu | 2014 | Molecular Medicine Reports2014,,: | 1 |
| 10 | Research on emergency rescue technology and equipment for train operation accidents on a heavy-haul railway network显示文摘Bridges,tunnels,cuttings and high subgrade account for a relatively large proportion in China’s heavy-haul railway system,where 10000 t of unit trains and 20000 t of combined trains are in operation.When a train operation accident occurs,it can easily cause vehicle intrusions,slant-span lines,tipping and stacking.Based on the viewpoint of system engineering,rescue methods such as hoisting,lifting,pulling and overturning are integrated,according to the characteristics of heavy-haul transport and the construction practice of train accident rescue system.A scheme of technical research and equipment configuration relating to heavy-haul railway rescue in China is put forward based on the situation—embankment,bridge,tunnel(including cuttings),ramp and curve rescue,and so on—and three-dimensional finite-element modelling and calculation checks on the key components are carried out. | Xianping Zhou Xiang Wei Lin Ma Fuwei Bai Hongwei Huang | 2020 | Transportation Safety and Environment2020,2,4: | 0 |
| 11 | An Empirical Analysis of Regional Disparity of Financial Exclusion Based on Types and Levels of Financial Institution显示文摘We make an empirical analysis of regional characteristics of influence factors of financial exclusion by using the data of types and levels of financial institutions in China from 1998 to 2012. The study shows that the number of financial institutions continues to increase,but with uneven distribution; the density of financial institutions increases steadily and the gap between the eastern regions and the Midwest is huge; the commercial banks of the eastern regions account for the highest proportion but the rate of basic outlets of the commercial bank is low,the rate of basic outlets of the rural institution bank is relatively higher,and the proportion of the Midwest rural banks is high. Even though the financial exclusion eases,large differences still exist in different areas and the situation is rather critical in rural areas,especially the financial exclusion in western rural areas is the worst. The economic development level,area scale,government expenditure,personal savings level,per capita consumption and educational level have different effects on financial exclusion. Accordingly,this paper puts forward the recommendations for coordinating the financial resource from all regions and reducing the regional financial exclusion. | Yongbin LU Xianping ZHOU Min LI Wanpeng ZOU | 2015 | Asian Agricultural Research2015,7,11: | 0 |
| 12 | Clinical Study of the Role of Food Allergen in Patients with Glomerular Nephritis显示文摘 | Chaomin Zhou Zhigang Liu Weiguo Sui Xianping Yi Shulu Zhou Yongqiang Li Guimian Zou Bin Li Kangping Deng Xiaofei Shao Hequn Zou | 2014 | 器官移植内科学杂志2014,9,1: | 0 |
| 13 | Stabilization of MYC G-quadruplex DNA by ruthenium(II)complex overcomes imatinib resistance in chronic myeloid leukemia cells harboring T315I mutation显示文摘The key pathogenesis of chronic myeloid leukemia(CML)is the formation of BCR-ABL fusion gene,encoding a 210 kDa Bcr-Abl tyrosine kinase,which is crucial for the occurrence and development of CML.Imatinib(IM)is the first targeted anticancer drug approved by FDA for the treatment of CML;however,some patients,especially those in accelerated phase and blastic phase,develop primary or secondary drug resistance to IM.Particularly,the most challenging resistance is caused by T315I mutation of Bcr-Abl,which represents approximately 15%–20%of all acquired mutations and renders cell resistant to a variety of tyrosine kinase inhibitors.1,2 Thus,there is an urgent need to develop novel strategies to overcome Bcr-Abl T315I-meidated IM resistance. | Yuening Sun Xin Chen Siyan Liao Aochu Liu Huan Zhou Liling Jiang Wa Ding Wenjie Mei Jinbao Liu Xianping Shi | 2023 | Genes & Diseases2023,10,2: | 0 |
| 14 | Multi-mode interaction middleware for software services显示文摘Due to the independency,variability,and tailorability of software service in the open environment,the research of middleware which supports software services multi-mode interaction is thus of great importance.In this paper,an agent-based multi-mode interaction middleware model and its supporting system for software services were proposed.This model includes an interaction feature decomposition and configuration model to enable interaction programming,an agent-based mid-dleware model,and a programmable coordination media based on reflection technology.The decomposition and configuration model for interaction features can assist programmers in interaction programming by analyzing and synthesizing interaction features.The agent-based middleware model provides a runtime framework for service multi-mode interaction.The programmable coordination media is able to effectively support software service coordination based on multi-mode interaction.To verify feasibility and efficiency of the above method,the de-sign,implementation and performance analysis of Artemis-M3C,a multi-mode in-teraction middleware for software services,were introduced.The result shows that the above method is feasible and that the Artemis-M3C system is practical and ef-fective in multi-mode interaction. | TAO XianPing MA XiaoXing LU Jian YU Ping ZHOU Yu | 2008 | Science in China(Series F)2008,51,8: | 0 |
| 15 | Recombineering enables genome mining of novel siderophores in a non-model Burkholderiales strain显示文摘Iron is essential for bacterial survival,and most bacteria capture iron by producing siderophores.Burkholde-riales bacteria produce various types of bioactive secondary metabolites,such as ornibactin and malleobactin siderophores.In this study,the genome analysis of Burkholderiales genomes showed a putative novel siderophore gene cluster crb,which is highly similar to the ornibactin and malleobactin gene clusters but does not have pvdF,a gene encoding a formyltransferase for N-δ-hydroxy-ornithine formylation.Establishing the bacteriophage recom-binase Redγ-Redδβ7029 mediated genome editing system in a non-model Burkholderiales strain Paraburkholderia caribensis CICC 10960 allowed the rapid identification of the products of crb gene cluster,caribactins A-F(1-6).Caribactins contain a special amino acid residue N-δ-hydroxy-N-δ-acetylornithine(haOrn),which differs from the counterpart N-δ-hydroxy-N-δ-formylornithine(hOrn)in ornibactin and malleobactin,owing to the absence of pvdF.Gene inactivation showed that the acetylation of hOrn is catalyzed by CrbK,whose homologs proba-bly not be involved in the biosynthesis of ornibactin and malleobactin,showing possible evolutionary clues of these siderophore biosynthetic pathways from different genera.Caribactins promote biofilm production and en-hance swarming and swimming abilities,suggesting that they may play crucial roles in biofilm formation.This study also revealed that recombineering has the capability to mine novel secondary metabolites from non-model Burkholderiales species. | Xingyan Wang Haibo Zhou Xiangmei Ren Hanna Chen Lin Zhong Xianping Bai Xiaoying Bian | 2023 | Engineering Microbiology2023,3,3: | 0 |