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Characteristics of intracellular polyphosphate granules and phosphorus-absorption of a marine polyphosphateaccumulating bacterium, Halomonas sp. YSR-3

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Journal of Oceanology and Limnology 2020年第1期38卷 195-203页

作者： REN Shiying LI Xiangqian yin xiulian LUO Chuping LIU Fei Jiangsu Provincial Key Construction Laboratory of Probiotics Preparation Huaiyin Institute of TechnologyHuai’an 223003China Jiangsu Provincial Engineering Laboratory for Advanced Materials of Salt Chemical Industry Huaiyin Institute of TechnologyHuai’an 223003China School of Life Science and Food Engineering Huaiyin Institute of TechnologyHuai’an 223003China

Halomonas ***-3 was isolated from the Yellow Sea and identified as a polyphosphate-accumulating bacterium and the characteristics of its intracellular polyphosphate(polyP)granules and phosphorus absorption were *** YSR-3 cells stored one or two polyP granules in regular appearance and *** diameter of the granules was about 400 nm measuring by a transmission electron microscope(TEM).After stained with 4,6-diamidino-2-phenylindole(DAPI)and visualized by a fluorescence microscope,the cells turned blue and the granules were bright *** composition of granules includes P(major ingredient),Mg,S,K,and Ca as detected by an energy dispersive X-ray spectrometer(EDS).When inorganic phosphorus(po34-)and ferric ion(Fe3+)were added into media,the biomass increased and the cells formed intracellular polyP granules owing to the phosphorus assimilation from *** YSR-3 obtained higher biomass by adding 0.02 g/L FePO4 than 0.005 g/L and 0.01 g/L FePO4;however,the phosphorus absorption was higher with 0.01 g/L FePO4 than 0.005 g/L and 0.02 g/L *** optical density at wavelength 480 nm(OD480nm)was 0.79 and 100%cells could form intracellular polyP *** results show that strain YSR-3 is able to acquire higher biomass and absorb more inorganic phosphorus when 0.01 g/L FePO4 is *** characteristics of absorbing and storing phosphorus as intracellular inorganic polyP granules have a potential for application in high-efficiency phosphorus removal in wastewater treatment.

关键词： polyphosphate-accumulating bacterium polyphosphate granule Halomonas enhanced biological phosphorus removal

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SAPO-34 facilitates the formation of benzene,toluene and xylenes in direct syngas conversion over MnCrO_(x)-SAPO-34-ZSM-5

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Science China Chemistry 2024年第2期67卷 732-740页

作者： Shuchi Zhang Dengyun Miao Yi Ding Mengyuan Li Shujing Guo Yujuan Zhang xiulian Pan Xinhe Bao State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian116023China University of Chinese Academy of Sciences Beijing100049China Shaanxi Yanchang Petroleum(Group)Co. Ltd.&Dalian Institute of Chemical Physics Xi’an Clean Energy(Chemical Industry)Research InstituteXi’an710000China

Direct conversion of syngas to aromatics over metal oxide and zeolite(OXZEO) composite catalysts is ***,the selectivity of more valuable products such as benzene,toluene and xylenes(BTX) is limited due to undesired secondary methylation of ***,we report that the introduction of SAPO-34 into MnCrO_(x)-ZSM-5 catalyst enhances significantly the formation of BTX without sacrificing the aromatics *** optimized conditions,the fraction of BTX in aromatics reaches 64.7% versus 28.9% over the catalyst without SAPO-34.A number of model reaction tests and characterizations reveal that SAPO-34 consumes partially the intermediates such as ketene,by converting them to light ***,the methylation of BTX by ketene to heavy aromatics is inhibited over the external acid sites of ZSM-5,leading to an enhanced BTX selectivity in the *** hybrid catalyst provides an efficient method for highly selective synthesis of BTX from syngas.

关键词： selective syngas conversion OXZEO aromatics BTX multi-functional catalysts

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生姜蛋白酶的分离纯化及其酶学性质初步研究

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中国酿造 2010年第4期29卷 98-100页

作者：游庆红尹秀莲淮阴工学院生命科学与化学工程学院江苏淮安223001

以新鲜生姜为原料,以生姜蛋白酶酶活为考察指标,对生姜蛋白酶的提取及纯化工艺进行研究。结果表明:以pH6.0的磷酸氢二钠-磷酸二氢钠缓冲液为提取溶剂所得酶活力较高,最佳工艺为:以pH6.0磷酸氢二钠-磷酸二氢钠缓冲液25℃提取2次,料液比1... 详细信息

以新鲜生姜为原料,以生姜蛋白酶酶活为考察指标,对生姜蛋白酶的提取及纯化工艺进行研究。结果表明:以pH6.0的磷酸氢二钠-磷酸二氢钠缓冲液为提取溶剂所得酶活力较高,最佳工艺为:以pH6.0磷酸氢二钠-磷酸二氢钠缓冲液25℃提取2次,料液比1∶1;应用硫酸铵盐析及透析袋透析对粗酶液进行纯化,粗酶液再以60%硫酸铵盐析24h,透析袋(14000)低温透析12h,冻干;酶学性质研究表明:生姜蛋白酶以酪蛋白为底物其最适pH值为6.0,30℃保温30min,酶活稳定。

关键词：生姜蛋白酶提取正交试验盐析透析

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Trends and Spatial Pattern Analysis of Typhoid and Paratyphoid Fever Incidence — Yunnan Province, China, 1989–2022

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China CDC weekly 2024年第41期6卷 1049-1053,I0001,I0002页

作者： xiulian Shen Liqiong Zhang Lining Guo Jibo He Weijun Yu Epidemic Surveillance/Public Health Emergency Response Center Yunnan Provincial Center for Disease Control and PreventionKunming CityYunnan ProvinceChina Department of Intervention Research Yunnan Institute for Drug AbuseKunming CityYunnan ProvinceChina Hunnan District Center for Disease Control and Prevention Shenyang CityLiaoning ProvinceChina Institute for Prevention and Control of Infection and Infectious Diseases Liaoning Provincial Center for Disease Control and PreventionShenyang CityLiaoning ProvinceChina.

Introduction:This study explored the incidence trends and spatial clustering of typhoid and paratyphoid fever(TPF)in Yunnan Province to provide scientific evidence for developing and improving prevention and control ***:Temporal trends were investigated by calculating the annual percent change(APC)and average annual percent change(AAPC),along with their 95%confidence intervals(CIs).The spatial clustering of TPF across Yunnan Province was examined using global Moran’s I and local indicators of spatial association(LISA)***:A total of 206,066 TPF cases were reported in Yunnan Province from 1989 to 2022,with an average annual incidence of 13.98 per 100,000 population and a case fatality rate of 2.5 per 1,*** greatest number of cases was reported during July and *** 25–34-year age group had the highest incidence,and farmers were prominently *** incidence in Yunnan Province showed a significant decrease and spatial *** 2005 to 2022,13 county-level cities/counties/municipal districts in 5 prefectures(cities)in Yunnan Province were identified as statistically significant H-H spatial clusters of TPF incidence.A total of 24 TPF outbreaks were reported in Yunnan Province from 2005 to ***:The incidence of TPF in Yunnan Province showed a significant decrease and spatial *** strategies should focus on highincidence areas,seasons,and populations to reduce the incidence of TPF.

关键词： Spatial prevention district

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响应面法优化桑黄多糖提取工艺研究

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中国酿造 2010年第5期29卷 67-69页

作者：游庆红尹秀莲淮阴工学院生命科学与化学工程学院江苏淮安223001

根据Box-Benhnken的中心组合试验设计原理,在单因素试验的基础上,选取提取温度、提取时间和液固比为影响因子,应用响应面法进行3因素3水平的试验设计,以桑黄多糖得率作为响应值,对其提取条件进行进一步优化。结果表明,热水浸提法提取桑... 详细信息

根据Box-Benhnken的中心组合试验设计原理,在单因素试验的基础上,选取提取温度、提取时间和液固比为影响因子,应用响应面法进行3因素3水平的试验设计,以桑黄多糖得率作为响应值,对其提取条件进行进一步优化。结果表明,热水浸提法提取桑黄多糖的最佳条件为固定液固比20.8(mL/g),99℃提取7.05h,多糖提取率可达1.133%。

关键词：单因素试验响应面法:桑黄多糖

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氧化葡萄糖酸杆菌培养及转化1,2-丙二醇生产D-乳酸研究

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中国酿造 2010年第3期29卷 64-66页

作者：尹秀莲游庆红淮阴工学院生命科学与化学工程学院江苏淮安223001 南京工业大学食品与轻工学院江苏南京210009

对氧化葡萄糖酸杆菌培养及转化1,2-丙二醇生产D-乳酸进行研究。采用单因素实验优化了氧化葡萄糖酸杆菌的生长培养基,然后通过不同转化条件对该菌转化1,2-丙二醇生成D-乳酸的工艺进行了初步探讨。氧化葡萄糖酸杆菌生长的最佳碳源为6%山... 详细信息

对氧化葡萄糖酸杆菌培养及转化1,2-丙二醇生产D-乳酸进行研究。采用单因素实验优化了氧化葡萄糖酸杆菌的生长培养基,然后通过不同转化条件对该菌转化1,2-丙二醇生成D-乳酸的工艺进行了初步探讨。氧化葡萄糖酸杆菌生长的最佳碳源为6%山梨醇、最佳氮源为3%酵母粉;转化1,2-丙二醇的最优工艺为:10%静息细胞、20%(R,S)1,2-丙二醇维持pH6.0,250mL摇瓶装液30mL,28℃、220r/min培养30h。

关键词：氧化葡萄糖酸杆菌 1,2-丙二醇 D-乳酸单因素实验

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中心组合设计优化保加利亚乳杆菌产亚油酸异构酶发酵培养基

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中国酿造 2011年第4期30卷 90-93页

作者：游庆红尹秀莲淮阴工学院生命科学与化学工程学院江苏淮安223001 南京工业大学食品与轻工学院江苏南京210009

首先应用部分析因设计法试验得出影响保加利亚乳杆菌产亚油酸异构酶的主要因素为亚油酸、蛋白胨和葡萄糖添加量,在此基础上根据中心组合设计原理,选取亚油酸添加量、蛋白胨和葡萄糖为影响因子,采用响应面法进行3因素5水平的试验设计,以... 详细信息

首先应用部分析因设计法试验得出影响保加利亚乳杆菌产亚油酸异构酶的主要因素为亚油酸、蛋白胨和葡萄糖添加量,在此基础上根据中心组合设计原理,选取亚油酸添加量、蛋白胨和葡萄糖为影响因子,采用响应面法进行3因素5水平的试验设计,以亚油酸异构酶酶活作为响应值,对其产酶培养基进行进一步优化。结果表明,保加利亚乳杆菌产亚油酸异构酶的最佳培养基组成为蛋白胨13.6g/L、LA添加量为1.99‰和葡萄糖25.4g/L、其余条件不变时,亚油酸异构酶酶活可达33.55U/mL。

关键词：部分析因设计法响应面法亚油酸异构酶酶活

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Stable alkali halide vapor assisted chemical vapor deposition of 2D HfSe2 templates and controllable oxidation of its heterostructures

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Frontiers of physics 2024年第3期19卷 29-38页

作者： Wenlong Chu Xilong Zhou Ze Wang xiulian Fan Xuehao Guo Cheng Li Jianling Yue Fangping Ouyang Jiong Zhao Yu Zhou School of Physics Hunan Key Laboratory of Nanophotonics and DevicesCentral South UniversityChangsha 410083China State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing100190China Department of Applied Physics The Hong Kong Polytechnic UniversityKowloonHong KongChina

Two-dimensional hafnium-based semiconductors and their heterostructures with native oxides have been shown unique physical properties and potential electronic and optoelectronic ***,the scalable synthesis methods for ultrathin layered hafnium-based semiconductor laterally epitaxy growth and its heterostructure are still restricted,also for the understanding of its formation ***,we report the stable sublimation of alkali halide vapor assisted synthesis strategy for high-quality 2D HfSe_(2) nanosheets via chemical vapor ***-crystalline ultrathin 2D HfSe_(2) nanosheets were systematically grown by tuning the growth parameters,reaching the lateral size of 6‒40μm and the thickness down to 4.5 *** scalable amorphous HfO_(2)and HfSe_(2)heterostructures were achieved by the controllable oxidation,which benefited from the approximate zero Gibbs free energy of unstable 2D HfSe_(2) *** crystal structure,elemental,and time dependent Raman characterization were carried out to understand surface precipitated Se atoms and the formation of amorphous Hf−O bonds,confirming the slow surface oxidation and lattice incorporation of oxygen *** relatively smooth surface roughness and electrical potential change of HfO_(2)−HfSe_(2) heterostructures indicate the excellent interface quality,which helps obtain the high performance memristor with high on/off ratio of 105 and long retention period over 9000 *** work introduces a new vapor catalysts strategy for the synthesis of lateral 2D HfSe_(2) nanosheets,also providing the scalable oxidation of the Hf-based heterostructures for 2D electronic devices.

关键词： chemical vapor deposition HfSe_(2)−HfO_(2) nanoelectronics

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Phosphatidic acid-enabled MKL1 contributes to liver regeneration:Translational implication in liver failure

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Acta Pharmaceutica Sinica B 2024年第1期14卷 256-272页

作者： Jiawen Zhou Xinyue Sun Xuelian Chen Huimin Liu xiulian Miao Yan Guo Zhiwen Fan Jie Li Yong Xu Zilong Li State Key Laboratory of Natural Medicines Department of PharmacologyChina Pharmaceutical UniversityNanjing 211198China Institute of Biomedical Research Liaocheng UniversityLiaocheng 252200China Department of Pathology Affiliated Nanjing Drum Tower Hospital of Nanjing University Medical SchoolNanjing 210008China Department of Infectious Diseases Nanjing Drum Tower Hospital Affiliated with Nanjing University Medical SchoolNanjing 210008China Institute of Viruses and Infectious Diseases Nanjing UniversityNanjing 210008China

Liver regeneration following injury aids the restoration of liver mass and the recovery of liver *** the present study we investigated the contribution of megakaryocytic leukemia 1(MKL1),a transcriptional modulator,to liver *** report that both MKL1 expression and its nuclear translocation correlated with hepatocyte proliferation in cell and animal models of liver regeneration and in liver failure *** with MKL1 deletion exhibited defective regenerative response in the *** analysis revealed that MKL1 interacted with E2F1 to program pro-regenerative ***2 mediated phosphorylation primed MKL1 for its interaction with *** interest,phospholipase d2 promoted MKL1 nuclear accumulation and liver regeneration by catalyzing production of phosphatidic acid(PA).PA administration stimulated hepatocyte proliferation and enhanced survival in a MKL1-dependent manner in a pre-clinical model of liver ***,PA levels was detected to be positively correlated with expression of pro-regenerative genes and inversely correlated with liver injury in liver failure *** conclusion,our data reveal a novel mechanism whereby MKL1 contributes to liver *** for small-molecule compounds boosting MKL1 activity may be considered as a reasonable approach to treat acute liver failure.

关键词： Liver failure Liver regeneration Transcription regulation Transcription factor Hepatocytes Phosphatidic acid Phospholipase d2 Translational medicine

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Progress in the preparation and physical properties of two-dimensional Cr-based chalcogenide materials and heterojunctions

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Frontiers of physics 2024年第2期19卷 105-130页

作者： xiulian Fan Ruifeng Xin Li Li Bo Zhang Cheng Li Xilong Zhou Huanzhi Chen Hongyan Zhang Fangping OuYang Yu Zhou School of Physics and Electronics Hunan Key Laboratory of Nanophotonics and DevicesCentral South UniversityChangsha 410083China Jincheng Research Institute of Opto-mechatronics Industry Jincheng 048000China Shanxi Key Laboratory of Advanced Semiconductor Optoelectronic Devices and Integrated Systems Jincheng 048000China School of Physical Science and Technology Xinjiang UniversityUrumqi 830046China State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China

Two-dimensional transition metal dichalcogenides(TMDs)exhibit promising application prospects in the domains of electronic devices,optoelectronic devices and spintronic devices due to their distinctive energy band structures and spin−orbit coupling ***-based chalcogenides with narrow or even zero bandgap,covering from semiconductors to metallic materials,have considerable potential for wide-band photodetection and two-dimensional ***,the preparation of 2D CrX_(n)(X=S,Se,Te)nanosheets primarily relies on chemical vapor deposition(CVD)and molecule beam epitaxy(MBE),which enable the production of high-quality large-area *** review article focuses on recent progress of 2D Cr-based chalcogenides,including unique crystal structure of the CrX_(n)system,phase-controlled synthesis,and heterojunction ***,a detailed introduction of room-temperature ferromagnetism and electrical/optoelectronic properties of 2D CrXn is ***,this paper summarizes the challenges associated with utilizing 2D Cr-based chalcogenides in preparation strategies,optoelectronics devices,and spintronic devices while providing further insights.

关键词： physical properties two-dimensional materials Cr-based chalcogenide controlled synthesis heterojunction eletronic and optoelectronic devices

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