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Enhancing leaching efficiency of ion adsorption rare earths by ameliorating mass transfer effect of rare earth ions by applying an electric field

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Journal of Rare Earths 2024年第1期42卷 172-180,I0006页

作者： Lingbo Zhou Jie Yang Shijie Kang Xiaojun Wang Hongdong Yu Yinhua Wan Rare Earth institute University of Science and Technology of ChinaHefei230000China Ganjiang Innovation Academy Chinese Academy of SciencesGanzhou341000China jiangxi institute of Rare Earths Chinese Academy of SciencesGanzhou341000China School of Resources and Environment Engineering Jiangxi University of Science and TechnologyGanzhou341000China

Improving the seepage of leaching solution in the ore body and strengthening the mass transfer process of rare earth ions during in-situ leaching are two critical methods to improve the leaching efficiency of rare *** this study,2 wt%MgSO_(4)solution was used for the indoor simulated column leaching experiment on rare earth samples and an electric field was applied at both ends of the *** the effects of different intensities,initial application time and duration of the electric field on the rare earth leaching system and its mechanism were *** results show that compared with the single MgSO_(4)solution leaching,applying an electric field with a strength of 6 V/cm can save the leaching time of 30 min and increase the flow velocity of the rare earth leachate by 26.98%.Under the optimal conditions of applying an electric field with a strength of 6 V/cm for 20 min to the leaching system after10 min of the rare earth leachate flowing out,the leaching efficiency of sample increases from 81.20% to 86.05% with the increase of 4.85%.The mechanism analysis shows that when a direct current electric field is applied to the rare earth leaching system,rare earth ions rapidly change from disorderly movement with the seepage into faster and directional *** addition,the seepage of the leaching solution is also improved due to the increase of the cross-sectional area of the seepage channel,the polarized water molecules migrate directionally by force from the negative pole,and the movement of the hydrogen is generated by the electrolytic *** impo rtantly,based on the principle of in-situ leaching process,the layout of injection holes and deflector holes in this process provides a natural site for the electrode layout of the electric *** the simple equipme nt and the ope ration,the rare earth leaching process with the applied electric field has high feasibility in industrial application.

关键词： Ion adsorption rare earths Leaching system Electric field Mass transfer process Seepage

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Clathrin heavy chain is involved in infection of Candidatus Liberibacter asiaticus in the host vector Diaphorina citri

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Insect Science 2024年第4期31卷 1326-1332页

作者： Lianjie Xie Xiangdong Zeng Muhammad Bilal Amir Xiaojin Zou Jingfu Yuan Haizhong Yu Zhanjun Lu Wei Chen National Navel Orange Engineering Research Center School of Life SciencesGannan Normal UniversityGanzhouJiangxi ProvinceChina South China Botanical Garden Chinese Academy of SciencesGuangzhouChina Agriculture and Rural Affairs Office of Datangbu Town GanzhouJiangxi ProvinceChina

DearEditor,Citrus huanglongbing(HLB)has emerged as a global issue,with confirmed cases in 51 out of 140 countries known for citrus production(Wang,2019).The primary pathogen believed to cause HLB is Candidatus Liberib... 详细信息

关键词： fir Candidatus citrus

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Wetting front migration model of ion-adsorption rare earth during the multi-hole unsaturated liquid injection

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第2期16卷 483-496页

作者： Yu Wang Xiaojun Wang Yuchen Qiu Hao Wang Gang Li Kaijian Hu Wen Zhong Zhongqun Guo Bing Li Chunlei Zhang Guangxiang Ye jiangxi Key Laboratory of Mining Engineering Jiangxi University of Science and TechnologyGanzhou341000China School of Resources and Environment Engineering Jiangxi University of Science and TechnologyGanzhou341000China School of Civil Engineering and Surveying&Mapping Engineering Jiangxi University of Science and TechnologyGanzhou341000China ganzhou Nonferrous Metallurgy Research institute Ganzhou341000China

In the process of ion-adsorption rare earth ore leaching,the migration characteristics of the wetting front in multi-hole injection holes and the influence of wetting front intersection effect on the migration distance of wetting fronts are still ***,wetting front migration distance and leaching time are usually required to optimize the leaching *** this study,wetting front migration tests of ionadsorption rare earth ores during the multi-hole fluid injection(the spacing between injection holes was 10 cm,12 cm and 14 cm)and single-hole fluid injection were completed under the constant water head *** the pre-intersection stage,the wetting front migration laws of ion-adsorption rare earth ores during the multi-hole fluid injection and single-hole fluid injection were *** the postintersection stage,the intersection accelerated the wetting front *** using the Darcy’s law,the intersection effect of wetting fronts during the multi-hole liquid injection was transformed into the water head height directly above the ***,based on the Green-Ampt model,a wetting front migration model of ion-adsorption rare earth ores during the multi-hole unsaturated liquid injection was *** analysis results showed that the proposed model can accurately simulate the infiltration process under experimental *** research results enrich the infiltration law and theory of ion-adsorption rare earth ores during the multi-hole liquid injection,and this study provides a scientific basis for optimizing the liquid injection well pattern parameters of ion-adsorption rare earth in situ leaching in the future.

关键词： Ion-adsorption rare earth ore Multi-hole unsaturated liquid injection In situ leaching Intersection effect Calculation model

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Balancing electron transfer and intermediate adsorption ability of metallic Ni-Fe-RE-P bifunctional catalysts via 4f-2p-3d electron interaction for enhanced water splitting

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Journal of Energy Chemistry 2024年第7期94卷 458-465页

作者： Hong-Rui Zhao Cheng-Zong Yuan Chenliang Zhou Wenkai Zhao Lunliang Zhang Cong-Hui Li Lei Xin Fuling Wu Shufeng Ye Xiaomeng Zhang Yunfa Chen School of Rare Earths University of Science and Technology of ChinaHefei 230026AnhuiChina jiangxi province Research institute of Rare Earths Ganjiang Innovation AcademyChinese Academy of SciencesGanzhou 341119JiangxiChina State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China

Balancing electron transfer and intermediate adsorption ability of bifunctional catalysts via tailoring electronic structures is crucial for green hydrogen production,while it still remains challenging due to lacking efficient ***,one efficient and universal strategy is developed to greatly regulate electronic structures of the metallic Ni-Fe-P catalysts via in-situ introducing the rare earth(RE)atoms(Ni-Fe-RE-P,RE=La,Ce,Pr,and Nd).Accordingly,the as-prepared optimal Ni-Fe-Ce-P/CC self-supported bifunctional electrodes exhibited superior electrocatalytic activity and excellent stability with the low overpotentials of 247 and 331 mV at 100 mA cm^(-2) for HER and OER,*** the assembled electrolyzer,the Ni-Fe-Ce-P/CC as bifunctional electrodes displayed low operation potential of 1.49 V to achieve a current density of 10 mA cm^(-2),and the catalytic performance can be maintained for 100 *** results combined with density functional theory(DFT)calculation reveal that Ce doping leads to electron decentralization and crystal structure distortion,which can tailor the band structures and d-band center of Ni-Fe-P,further increasing conductivity and optimizing intermediate adsorption *** work not only proposes a valuable strategy to regulate the electron transfer and intermediate adsorption of electrocatalysts via RE atoms doping,but also provides a deep under-standing of regulation mechanism of metallic electrocatalysts for enhanced water splitting.

关键词： RE atoms Electron transfer Adsorption energy Oxygen evolution Hydrogen evolution

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Auxiliary ball milling to prepare WS_(2)/graphene nanosheets composite for lithium-ion battery anode materials

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Tungsten 2024年第1期6卷 124-133页

作者： Yong-Lin Wu Jia-Bin Hong Wei-Xu Zhong Chun-Xiang Wang Zhi-Feng Li Sydorov Dmytro jiangxi Provincial Key Laboratory of Power Batteries and Materials Jiangxi University of Science and TechnologyGanzhou 341000China Faculty of Materials Metallurgy and Chemistry Jiangxi University of Science and TechnologyGanzhou 341000China institute of Bioorganic Chemistry and Petrochemistry National Academy of Sciences of UkraineKiev 02160Ukraine

A novel nano-WS_(2)/graphene nanosheets(GNSs)composite is obtained by ball milling with xylitol as auxiliary agent and hightemperature *** improves the shear force during ball milling and well overcomes the van der Waals interactions between the interlayer of graphite and WS_(2).Through high-temperature calcination,GNSs and WS_(2) nanosheets can form tight interface *** produced WS_(2)/GNSs composites can be used as anode materials for lithium-ion batteries,while maintaining a high reversible specific capacity of 705 mAh·g^(-1)with the capacity retention of 95%at a current density of 250 mA·g^(-1)after 200 cycles,mainly because WS_(2)/GNSs composites have a higher Li^(+)diffusion coefficient of 2.2×10^(-9)cm^(2)·s^(-1)and a higher specific surface area of 70.10 m^(2)·g^(-1).As a result,the xylitol-assisted ball milling method designed in this work is suitable for extended preparation of peeling of two-dimensional layer materials into nanosheets.

关键词： Lithium-ion battery Anode material WS_(2) Graphene nanosheets Auxiliary ball milling

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Recovering rare earths,lithium and fluorine from rare earth molten salt electrolytic slag using sub-molten salt method

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Journal of Rare Earths 2024年第9期42卷 1774-1781,I0005页

作者： Delong Yang Mingming Yu Yusufujiang Mubula Weiquan Yuan Zheyu Huang Bo Lin Guangjun Mei Tingsheng Qiu School of Resources and Environmental Engineering Jiangxi University of Science and TechnologyGanzhou341000China jiangxi Key Laboratory of Mining Engineering Jiangxi University of Science and TechnologyGanzhou341000China School of Resources and Environmental Engineering Wuhan University of TechnologyWuhan430070China Gannan institute of Science and Technology Ganzhou341000China

Viewing the problem of high ene rgy consumption in the process of recovering rare earths from rare earth molten salt electrolysis slag,an environmentally friendly and low carbon process by sub-molten salt decomposition was *** thermodynamic analysis of sub-molten salt reaction indicates that the recovery of rare earths from the slag using sub-molten salt medium is thermodynamically *** this process,the rare earth fluoride and lithium in the slag are almost transformed into rare earth hydroxide,sodium fluoride and lithium hydroxide,fluorine and lithium are transferred into the washing solution,and the rare earths in the residues can be leached into solution by acid *** the optimum reaction conditions of reaction temperature 200℃,reaction time 3 h,NaOH initial concentration 80%,NaOH-Slag mass ratio 3:1,the leaching efficiency of rare earths,fluorine and lithium can reach to 99.05%,98.23% and 99.22%.After evaporation,the fluorine and lithium in the washing solution can be obtained in the forms of sodium fluoride and lithium fluoride,the recovery efficiency reach 95.5%and 92.8%,*** RE oxides(99.53%) can be obtained from the leaching solution after precipitation and roasting.

关键词： Rare earth electrolysis slag Sub-molten salt Green extraction Fluorine Lithium Recovery

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Delineation of urban growth boundary based on FLUS model under the perspective of land use evaluation in hilly mountainous areas

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Journal of Mountain Science 2024年第5期21卷 1647-1662页

作者： ZHANG Yunping LIN Jianping HUANG Yimin CHEN Zebin ZHU Chenhui YUAN Hao School of Geography and Environmental Engineering Gannan Normal UniversityGanzhou 341000China Key Laboratory of Low Carbon Recycling Technology for Municipal Solid Waste in jiangxi province Ganzhou 341000China

With rapid economic development,the size of urban land in China is expanding *** Urban Growth Boundary(UGB)is an expandable spatial boundary for urban construction in a certain period in order to control the urban *** delineation of UGB can inhibit the disorderly spread of urban space and guide the normal development of the *** is of practical significance for the construction of green urban *** study utilizes GIS technology to establish a land construction suitability evaluation system for Nankang city,which is experiencing rapid urban expansion,and outlines the preliminary UGB under the future land use simulation(FLUS)*** the same time,considering the coupled coordination of"Production-Living-Ecological Space",and based on the suitability evaluation,we revised the preliminary UGB by combining the advantages of the patch-generating land use simulation(PLUS)model and the convex hull model to delineate the final *** results show that:1)the comprehensive score of the evaluation of the suitability of the construction of land from high to low shows the distribution of the center of the city to the surrounding circle type spread,the center of the city has the highest suitability *** results of convex hull model show that the urban expansion type of Nankang is *** the future,the urban expansion will mainly occur in the northern part of the *** PLUS model predicts an increase of 3359.97 hm^(2)of construction land in Nankang by 2035,of which 2022.97 hm^(2)is urban construction land.2)The FLUS model has a prediction accuracy of 86.3%and delineates a preliminary UGB area of 9215.07 hm^(2).3)We used the results of the construction suitability evaluation,PLUS model simulation results,and convex hull model predictions to revise the originally delineated *** final delineated UGB area is 8895.67 hm^(2)and it is capable of meeting the future development of the study *** results of the delineation can promote

关键词： Urban sprawl FLUS model Spatial correction Urban growth boundary Sustainable development

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Potentials of ribosomopathy gene as pharmaceutical targets for cancer treatment

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Journal of Pharmaceutical Analysis 2024年第3期14卷 308-320页

作者： Mengxin Wang Stephen Vulcano Changlu Xu Renjian Xie Weijie Peng Jie Wang Qiaojun Liu Lee Jia Zhi Li Yumei Li Key Laboratory of Biomaterials and Biofabrication in Tissue Engineering of jiangxi province Gannan Medical UniversityGanzhouJiangxi341000China School of Rehabilitation Medicine Gannan Medical UniversityGanzhouJiangxi341000China Autoimmunity and Inflammation Program HSS Research InstituteHospital for Special Surgery New YorkNew YorkNY10021USA Division of Oral and Systemic Health sciences School of DentistryUniversity of CaliforniaLos AngelesCA90095USA School of Medical Information Engineering Gannan Medical UniversityGanzhouJiangxi341000China Inflammation and Immune Mediated Diseases Laboratory of Anhui province Anhui Institute of Innovative DrugsInstitute for Liver Diseases of Anhui Medical UniversitySchool of PharmacyAnhui Medical UniversityHefei230032China School of Basic Medicine Gannan Medical UniversityGanzhouJiangxi341000China institute of Oceanography Minjiang UniversityFuzhou350108China

Ribosomopathies encompass a spectrum of disorders arising from impaired ribosome biogenesis and reduced *** or dysexpression of the genes that disturb any finely regulated steps of ribosome biogenesis can result in different types of ribosomopathies in clinic,collectively known as ribosomopathy *** data suggest that ribosomopathy patients exhibit a significantly heightened susceptibility to *** ribosome biogenesis and dysregulation of some ribosomopathy genes have also been found to be intimately associated with cancer *** correlation between ribosome biogenesis or ribosomopathy and the development of malignancies has been well *** work aims to review the recent advances in the research of ribosomopathy genes among human cancers and meanwhile,to excavate the potential role of these genes,which have not or rarely been reported in cancer,in the disease development across *** plan to establish a theoretical framework between the ribosomopathy gene and cancer development,to further facilitate the potential of these genes as diagnostic biomarker as well as pharmaceutical targets for cancer treatment.

关键词： Ribosome biogenesis Ribosomopathy gene Cancer treatment target Pharmaceutical target

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Selective recovery of Th(Ⅳ) from radioactive rare earth waste residue by utilizing MoS_(2)-modified ion-absorbed type rare earth tailings

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Journal of Rare Earths 2024年第9期42卷 1782-1791,I0005页

作者： Xirong Chen Xinyu Fu Yun Gao Zhiyuan Zeng Bin Huang Xiaoqi Sun Faculty of Materials Metallurgy and Chemistry Jiangxi University of Science and TechnologyGanzhou341000China CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou350002China Fujian Research Center for Rare Earth Engineering Technology Xiamen Institute of Rare Earth MaterialsHaixi InstituteChinese Academy of SciencesXiamen361021China Fujian College University of Chinese Academy of SciencesFuzhou350002China jiangxi province Key Laboratory of Cleaner Production of Rare Earths Ganjiang Innovation AcademyChinese Academy of SciencesGanzhouJiangxi341000China

In the process of extracting ion-absorbed rare earth ore(IREO),the production of radioactive waste is a major environmental *** address this issue,MoS_(2) was used to modify ion-absorbed rare earth tailings(RET) to synthesize a novel MoS_(2)@RET composite material for the effective handling of radioactive waste generated in IREO separation *** composite material was thoroughly characterized using various analytical techniques,including X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),thermogravimetry(TG),Fourier-transform infrared(FTIR),scanning electron microscopy(SEM),Brunaue r-Emmett-Teller(BET) and energy dispersive spectroscopy(EDS).By optimizing the operating parameters,the optimal experimental conditions were determined to be pH=3,contact time=60 min,liquid-solid ratio=6 g/L,and initial concentration=150 mg/*** adsorption data fitted well with the pseudo second-order rate *** thermodynamic parameters concerning the adsorption of Th(Ⅳ) were analyzed and *** isotherm model is a more fitting choice for the adsorption process compared to the Freundlich isotherm ***_(2)@RET was used in the acid leachate of IREO waste residue,achieving the separation of Th and rare earth *** mechanism of Th(Ⅳ) adsorption by MoS_(2)@RET was investigated,revealing that the adsorption process involves electrostatic interactions,chemical bonding,and redox *** above research results indicate that MoS_(2)@RET composite materials have application potential in the sustainable treatment of IREO radioactive waste.

关键词： Rare earths Thorium Radioactive waste residue Adsorption Separation

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Prognostic significance and relationship of SMAD3 phosphoisoforms and VEGFR-1 in gastric cancer:A clinicopathological study

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World Journal of Gastrointestinal Oncology 2024年第1期16卷 118-132页

作者： Shi-Lin Lv Pei Guo Jun-Rong Zou Ren-Sheng Chen Ling-Yu Luo De-Qiang Huang Hospital of Gastroenterology Institute of Digestive DiseasesThe First Affiliated Hospital of Nanchang UniversityNanchang 330006Jiangxi ProvinceChina Department of Pathology Shenzhen Hospital of Southern Medical UniversityShenzhen 518000Guangdong ProvinceChina institute of Urology The First Affiliated Hospital of Gannan Medical UniversityGanzhou 341000Jiangxi ProvinceChina Department of Pathology The First Affiliated Hospital of Nanchang UniversityNanchang 330006Jiangxi ProvinceChina

BACKGROUND The TGF-β/SMAD3 and VEGFR-1 signaling pathways play important roles in gastric cancer ***3 phosphorylation is a crucial prognostic marker in gastric *** To determine the prognostic value and relationship of SMAD3 phospho-isoforms and VEGFR-1 in gastric *** This was a single-center observational study which enrolled 98 gastric cancer patients and 82 adjacent normal gastric tissues from patients aged 32-84 years(median age 65)between July 2006 and April *** were followed up until death or the study ended(median follow-up duration of 28.5 mo).The samples were used to generate tissue microarrays(TMAs)for immunohistochemical(IHC)*** expressions of TGF-β1,pSMAD3C(S423/425),pSMAD3L(S204),and VEGFR-1 in gastric cancer(GC)tumor tissue and normal tissue were measured by IHC staining using TMAs obtained from 98 GC *** and survival information of the patients was recorded by Outdo Biotech from May 2007 to July *** relationship between TGF-β1,pSMAD3C(S423/425),pSMAD3L(S204),and VEGFR-1 protein expression levels was analyzed using Pearson's correlation *** relationship between protein expression levels and clinicopathological parameters was analyzed using the Chi-squared test.A survival curve was generated using the Kaplan-Meier survival *** TGFβ-1 and VEGFR-1 expression was significantly upregulated in gastric cancer tissue compared to adjacent noncancerous *** positive expression of phosphorylated isoforms of Smad3 varied depending on the phosphorylation site[pSMAD3C(S423/425):51.0%and pSMAD3L(S204):31.6%].High expression of pSMAD-3L(S204)was significantly correlated with larger tumors(P=0.038)and later N stages(P=0.035).Additionally,high expression of VEGFR-1 was closely correlated with tumor size(P=0.015)and pathological grading(P=0.013).High expression of both pSMAD3L(S204)and VEGFR-1 was associated with unfavorable outcomes in terms of overall survival(OS).Multiva

关键词： Gastric cancer pSMAD3L(S204) pSMAD3C(S423/425) Survival Transforming growth factor-β1 VEGFR-1

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