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Particuology 2023年第4期75卷 217-227页

作者： Jinbo Ouyang Jian Chen Wenqian Chen Limin Zhou Di Cai Cong Ren Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices East China University of TechnologyNanchang330013China Department of Pharmacy National University of Singapore117544Singapore National Energy Research and Development Center for Biorefinery Beijing University of Chemical TechnologyBeijing100029China

Biochars were prepared by the pyrolysis of various H_(3)PO_(4) activated agricultural biomasses at 600℃and subsequently used as adsorbents for the removal of ciprofloxacin(CIP)from aqueous solution.Peanut shell-based biochar(PSBC),corncob-based biochar(CCBC)and cotton-based biochar(CTBC)had high surface areas(571.0-1006.3 m^(2)/g),well-developed pore structures(mesopores with large pore volumes)and available adsorption functional groups(C=C,C-N and C-O-C).The CIP adsorption onto the biochars was investigated by batch experiments(kinetics,isotherms,thermodynamics,pH,etc.).Thermodynamics calculations showed the spontaneous(ΔG^(θ)0)nature of the mechanism.In particular,CCBC exhibited high adsorption capacity(120.6 mg/g)of CIP in real lake water and it also had significant removal efficiency of other common pharmaceutical contaminants from real lake environ-ment,and even in a coexisting quintuple system.Finally,multiple interaction mechanisms of CIP adsorption onto aromatized biochar were explored combining characterization analysis and theoretical calculations.Elucidation of the mechanism of CIP adsorption onto biochar provides new insights into the assessment of the removal of pharmaceuticals from the aqueous environment.

关键词： Biochar Adsorption Pharmaceutical contaminants Ciprofloxacin Water remediation

Scale-adaptive superpixels for medical images

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Quantitative Biology 2022年第3期10卷 264-275页

作者： limin Sun Dongyang Ma Yuanfeng zhou School of Software Shandong UniversityJinan 250100China

Background:Superpixel segmentation is a powerful preprocessing tool to reduce the complexity of image processing.Traditionally,size uniformity is one of the significant features of superpixels.However,in medical images,in which subjects scale varies greatly and background areas are often flat,size uniformity rarely conforms to the varying content.To obtain the fewest superpixels with retaining important details,the size of superpixel should be chosen carefully.Methods:We propose a scale-adaptive superpixel algorithm relaxing the size-uniformity criterion for medical images,especially pathological images.A new path-based distance measure and superpixel region growing schema allow our algorithm to generate superpixels with different scales according to the complexity of image content,that is smaller(larger)superpixels in color-riching areas(flat areas).Results:The proposed superpixel algorithm can generate superpixels with boundary adherence,insensitive to noise,and with extremely big sizes and extremely small sizes on one image.The number of superpixels is much smaller than size-uniformly superpixel algorithms while retaining more details of images.Conclusion:With the proposed algorithm,the choice of superpixel size is automatic,which frees the user from the predicament of setting suitable superpixel size for a given application.The results on the nuclear dataset show that the proposed superpixel algorithm superior to the respective state-of-the-art algorithms on both quantitative and quantitative comparisons.

关键词： superpixels scale adaptive medical images segmentation

Adsorption removal of sulfamethoxazole from water using UiO-66 and UiO-66-BC composites

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Particuology 2022年第3期20卷 71-78页

作者： Jinbo Ouyang Jian Chen Shaoqing Ma Xiaohong Xing Limin Zhou Zhirong Liu Chuntao Zhang Jiangxi Province Key Laboratory of Synthetic Chemistry East China University of TechnologyNanchang 330013China School of Chemistry and Chemical Engineering Wuhan University of Science and TechnologyWuhan 430081China

The adsorption removal of anti-inflammatory drugs from water by diverse materials has drawn great attention.This study investigated the adsorption of sulfamethoxazole(SMX)by two types of materials,UiO-66 and UiO-66-BC composites.Highly porous MOF composites with functional groups were synthesized by combining UiO-66 with corncob-based biochar at different molar ratios.SEM results showed that macroporosity of UiO-66-BC composites was increased by increasing the ratio of biochar.It was found that UiO-66-BC composites displayed highly improved adsorption performance of SMX relative to pristine UiO-66.UiO-66-BC(5%)had the highest SMX adsorption capacity,about 2.4 times those of pristine UiO-66.It was the high surface area of UiO-66 and redundant functional groups of biochar that increased the adsorption performance of composites.Moreover,UiO-66-BC can be reused and displayed the competitive adsorption efficiency after successive adsorption,which made it a potential adsorbent for the removal of SMX from water.

关键词： Adsorption UiO-66 Biochar Sulfamethoxazole

Effects of solvent,supersaturation ratio and silica template on morphology and polymorph evolution of vanillin during swift cooling crystallization

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Particuology 2022年第6期20卷 93-104页

作者： Jinbo Ouyang Xiaohong Xing Jian Chen Limin Zhou Zhirong Liu Jerry Y.Y.Heng Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices East China University of TechnologyNanchang 330013China Department of Chemical Engineering Imperial College LondonSouth Kensington CampusLondon SW72AZUK

Swift cooling crystallization of vanillin was investigated in water,ethanol,isopropanol and ethyl acetate.Morphology and polymorph evolution of vanillin were discussed in terms of solvent,supersaturation ratio and silica template.PXRD,DSC,FTIR and microscope were used to identify polymorphs of vanillin.Results showed that the nucleated polymorphs of vanillin depended largely on the solvent,supersaturation ratio and silica template.Low supersaturation ratios favor the nucleation of stable form I in water,and high supersaturation ratio exceeds 7 generating 100%metastable form II.However,if the supersaturation ratio is too high(S>8),liquid-liquid phase separation will occur,and no crystals could be obtained.In other solvents such as ethanol,isopropanol and ethyl acetate,only form I was obtained.However,it should be noted that the morphology of form I prepared in ethanol,isopropanol and ethyl acetate is distinct from that obtained in water,the former is flake-like and the latter is rod-like.The nucleation of vanillin from different solution was also studied with the presence of SiO_(2),SiO_(2)-NH_(2)and SiO_(2)−COOH templates,which did not change the nucleated polymorph of vanillin,but changed the nucleation and growth rate of stable form I.

关键词： Vanillin Supersaturation ratio Nucleation Polymorph Template

Sulfur-linked carbonyl polymer as a robust organic cathode for rapid and durable aluminum batteries

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Journal of Energy Chemistry 2021年第12期30卷 320-327,I0007页

作者： Liang Fang Limin Zhou Lianmeng Cui Peixin Jiao Qinyou An Kai Zhang Department of Energy and Materials Engineering Dongguk University-SeoulSeoul 04620Republic of Korea Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Engineering Research Center of High-efficiency Energy Storage(Ministry of Education)Renewable Energy Conversion and Storage Center(RECAST)College of ChemistryNankai UniversityTianjin 300071China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Foshan 528200GuangdongChina

Rechargeable aluminum batteries are believed as a promising next-generation energy-storage system due to abundant low-cost Al sources and high volumetric specific capacity.The Al-storage cathodes,however,are plagued by strong electrostatic interaction between host materials and carrier ions,leading to large overpotential and undesired cycling stability as well as sluggish ion diffusion kinetics.Herein,sulfur-linked carbonyl polymer based on perylene-3,4,9,10-tetracarboxylic dianhydride(PTCDA) as the cathode materials for ABs is proposed,which demonstrates a small voltage polarization(135 mV),a reversible capacity of 110 mAh g^(-1) at 100 mA g^(-1) even after 1200 cycles,and rapid Al-storage kinetics.Compared with PTCDA,the sulfide polymer possesses higher working voltage because of its lower LUMO energy level according to theoretical calculation.The ordered carbonyl active sites in sulfide polymer contribute to the maximized material utilization and rapid ion coordination and dissociation,resulting in superior rate capability.Besides,the bridged thioether bonds endow the polysulfide with robust and flexible structure,which inhibits the dissolution of active materials and improves cycling stability.This work implies the importance of ordered arrangement of redox active moieties for organic electrode,which provides the theoretical direction for the structural design of organic materials applied in multivalent-ion batteries.

关键词： Aluminum batteries Organic materials Carbonyl polymer Electrochemical active sites Ordered arrangement

Geology and Geochemistry of K-feldspar Veins in Lamprophyre at the Zhenyuan Gold Deposit,Yunnan,Southwest China:Implications for Gold Mineralization

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Acta Geologica Sinica(English Edition) 2024年第1期98卷 104-116页

作者： ZHANG Huichao CHAI Peng ZHANG Hongrui zhou limin HOU Zengqian Key Laboratory of Submarine Geosciences Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China Institute of Geology Chinese Academy of Geological SciencesBeijing 100037China Key Laboratory of Marine Hazards Forecasting Ministry of Natural ResourcesHohai UniversityNanjing 210024China National Research Center for Geoanalysis Beijing 100037China

Lamprophyres typically appear in hydrothermal gold deposits.The relationship between lamprophyres and gold deposits is investigated widely.Some researchers suggest that the emplacement of lamprophyres triggers gold mineralization,whereas others hypothesize that the formation of lamprophyres increases the fertility of mantle sources and ore-forming fluids.K-feldspar veins,with ages between those of lamprophyres and gold deposits,appear in lamprophyres in Zhenyuan.Therefore,K-feldspar veins are ideal for investigating the relationship between lamprophyres and gold deposits.Phlogopite in K-feldspar veins has lower Mg#,Ni,and Cr contents and higher TiO2,Li,Ba,Sr,Sc,Zr,Nb,and Cs contents than phlogopite in lamprophyres.The in-situ Sr isotopic values of apatites(0.7063–0.7066)in K-feldspar veins are within the range for apatites(0.7064–0.7078)from lamprophyres.High large-ion lithophile element concentrations and low Nb and Ta concentrations in phlogopite from lamprophyres,in addition to high(87Sr/86Sr)i values of apatite(0.7064–0.7078),indicate that the magma parental to these phlogopite and apatite crystals is derived from an enriched mantle.Kfeldspar veins are genetically correlated with lamprophyres,whereas sulfide mineral assemblage and trace element compositions of pyrite in K-feldspar veins suggest that K-feldspar veins in lamprophyres are not directly related to gold mineralization of the Zhenyuan deposit.

关键词： lamprophyre K-feldspar vein apatite Sr isotope gold Zhenyuan deposit Yunnan

Long noncoding RNA PPP1R14B-AS1 imitates microRNA-134-3p to facilitate breast cancer progression by upregulating LIM and SH3 protein 1

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Oncology Research 2021年第4期29卷 251-262页

作者： Limin Zhou LIANBO ZHANG XIN GUAN YI DONG TAO LIU Department of Second Breast Surgery Jilin Cancer HospitalJilin130012China Medical Insurance Guarantee Office Jilin Cancer HospitalJilin130012China Department of Breast Surgery The First Hospital of Jilin UniversityJilin130061China

Long noncoding RNA PPP1R14B antisense RNA 1(PPP1R14B-AS1)has emerged as a critical modulator of liver cancer and lung adenocarcinoma progression.However,the functional importance and biological relevance of PPP1R14B-AS1 in breast cancer remain unclear.Therefore,this study was designed to detect PPP1R14B-AS1 levels in breast cancer cells using qRT–PCR and elucidate the inﬂuence of PPP1R14B-AS1 on aggressive phenotypes.Furthermore,molecular events mediating the action of PPP1R14B-AS1 were characterized in detail.Functional experiments addressed the impacts of PPP1R14B-AS1 knockdown on breast cancer cells.In this study,PPP1R14B-AS1 was found to be overexpressed in breast cancer,exhibiting a close correlation with poor patient prognosis.Results also showed that breast cancer cell proliferation and motility were suppressed when PPP1R14B-AS1 was silenced.Mechanistically,PPP1R14B-AS1 acted as a competing endogenous RNA for microRNA-134-3p(miR-134-3p)in breast cancer cells.PPP1R14B-AS1 also increased LIM and SH3 protein 1(LASP1)levels by imitating miR-134-3p in breast cancer cells.Rescue experiments further corroborated that the knockdown of miR-134-3p or an increase in LASP1 restored the aggressive malignant characteristics of breast cancer cells that were weakened by PPP1R14B-AS1 depletion.In summary,PPP1R14B-AS1 facilitated the oncogenicity of breast cancer cells by controlling the miR-134-3p/LASP1 axis.We believe that ourﬁndings may contribute to the development of precision therapy techniques in theﬁeld of breast cancer treatment.

关键词： Therapeutic target ceRNA theory Precision therapy miRNA sponge

Long noncoding RNA CCDC183-AS1 depletion represses breast cancer cell proliferation, colony formation, and motility by sponging microRNA-3918

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Oncology Research 2021年第3期29卷 189-200页

作者： TAO LIU Limin Zhou LIANBO ZHANG XIN GUAN YI DONG Department of Second Breast Surgery Jilin Cancer HospitalChangchun130012China Medical Insurance Guarantee Office Jilin Cancer HospitalChangchun130012China Department of Breast Surgery The First Hospital of Jilin UniversityChangchun130061China

Many studies have illustrated the significance of long noncoding RNAs in oncogenesis and promotion of breast cancer(BC).However,the biological roles of CCDC183 antisense RNA 1(CCDC183-AS1)in BC have rarely been characterized.Thus,we explored whether CCDC183-AS1 is involved in the malignancy of BC and elucidated the possible underlying mechanisms.Our data confirmed elevated CCDC183-AS1 expression in BC,which was associated with poor clinical outcomes.Functionally,knocking down CCDC183-AS1 hampered cell proliferation,colony formation,migration,and invasion in BC.Additionally,the absence of CCDC183-AS1 restrained tumor growth in vivo.Mechanistically,CCDC183-AS1 executed as a competitive endogenous RNA in BC cells by decoying microRNA-3918(miR-3918)and consequently overexpressing fibroblast growth factor receptor 1(FGFR1).Furthermore,functional rescue experiments confirmed that inactivation of the miR-3918/FGFR1 regulatory axis by inhibiting miR-3918 or increasing FGFR1 expression could abrogate the CCDC183-AS1 ablation-mediated repressive effects in BC cells.In summary,CCDC183-AS1 deteriorates the malignancy of BC cells by controlling miR-3918/FGFR1 regulatory axis.We believe that our study can deepen our understanding of BC etiology and contribute to an improvement in treatment choices.

关键词： Long noncoding RNA CCDC183-AS1 microRNA ceRNA

Dynamics of arsenic in salt marsh sediments from Dongtan wetland of the Yangtze River estuary,China

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Journal of Environmental Sciences 2012年第12期24卷 2113-2121页

作者： Yongjie Wang Limin Zhou Xiangmin Zheng Peng Qian Yonghong Wu Department of Geography College of Resources and Environmental SciencesEast China Normal UniversityShanghai 200062China School of Geography Nantong UniversityNantong 226019China Department of Gography Minfiang UniversityFuzhou 350108China

The mobility and transformation of arsenic （As） in salt marsh sediments were investigated in Dongtan wetland of the Yangtze River estuary, China. As in surface water, pore water and the rhizosphere sediments were quantified. The microcosm incubation experiments were conducted during the flooding of the sediments to examine As dynamics that occurred during changing redox conditions. The concentrations of dissolved As in pore water （0.04--0.95 ixmol/L） were significantly greater than that in surface water （0.03-0.06 lunol/L）. Under anoxic conditions, the reactive As could be initially mobilized by the reductive dissolution of Fe（III）（hydr）oxides. Subsequently, most of the dissolved As was likely to be associated with secondary iron （hydr）oxide phases and remained in solid phases. The seasonal variability of acid volatile sulfide concentrations suggest the anoxic conditions are enhanced during summer by Spartina alterniflora compared to Phragmites australis and Scirpus mariqueter, causing a notable increase in As mobility. Generally, there was a typical variation in redox conditions with season in salt marsh sediments of Dongtan wetland, in which the dynamics of As mobility and transformation possibly were controlled by iron, and all of this could be significantly influenced by the rapid spread of S. alterniflora.

关键词： Arsenic iron （hydr）oxides salt marsh sediment Spartina alterniflora Yangtze River estuary

Besshi-type mineral systems in the Palaeoproterozoic Bryah Rift-Basin, Capricorn Orogen, Western Australia： Implications for tectonic setting and geodynamic evolution

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Geoscience Frontiers 2016年第3期7卷 345-357页

作者： Franco Pirajno Yanjing Chen Nuo Li Chao Li Limin Zhou Centre for Exploration Targeting University of Western Australia 35 Stirling Highway Crawley WA 6009 Australia Key Laboratory of Orogen and Crust Evolution Peking University Beijing 100871 China Xinjiang Research Center for Mineral Resources Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences Urumcli 830011 China National Research Center for Geoanalysis Beijing 100037 China

In this contribution we use VMS mineral systems in the Bryah rift-basin to constrain the tectonic setting of the widespread mafic and ultramafic magmatism that characterises the rift-basin in question.Two distinct,but temporally closely associated,lithostratigraphic sequences,Narracoota and Karalundi Formations,are discussed.The Karalundi Formation is the main host of VMS mineral systems in the region.The Karalundi Formation consists of turbiditic and immature clastic sediments,which are locally intercalated with basaltic hyaloclastites,dolerites and banded jaspilites.We propose that the basaltic hyaloclastites,dolerites and elastics and jaspilites rocks,form a distinct unit of the Karalundi Formation,named Noonyereena Member.The VMS mineral systems occur near the north-east trendingJenkin Fault and comprise the giant and world-class DeCrussa and the Red Bore deposits.The nature of these deposits and their intimate association with terrigenous clastic rocks and dominantly marine mafic volcanic and subvolcanic rocks,as well as the common development of peperitic margins,are considered indicative of a Besshi-type environment,similar to that of present-day Gulf of California.Our Re-Os age data from a primary pyrite yielded a mean model age of 2012 ± 48 Ma,which coincides（within error） with recent published Re-Os data（Hawke et al.,2015） and confirms the timing of the proposed geodynamic evolution.We propose a geodynamic model that attempts to explain the presence of the Narracoota and Karalundi Formations as the result of mantle plume activity,which began with early uplift of continental crust with intraplate volcanism,followed by early stages of rifting with the deposition of the Karalundi Formation（and Noonyereena Member）,which led to the formation of Besshi-type VMS deposits.With on-going mantle plume activity and early stages of continental separation,an oceanic plateau was formed and is now represented by mafic-ultramafic rocks of the Narracoota Formation.

关键词： Bryah rift-basin DeGrussa VMS Narracoota and Karalundi Formations Besshi-type deposit Geodynamic model