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Oxygen Evolution Efficiency and Chlorine Evolution Efficiency for Electrocatalytic Properties of MnO_2-based Electrodes in Seawater

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Journal of Wuhan University of Technology(Materials Science) 2019年第1期34卷 69-74页

作者： YAN Zhenwei song lijun TANG Mingqi FENG Zaiqiang School of Mechanical Engineering North China University of Water Resources and Electric Power Environmental Protection and Chemistry Center Suzhou Nuclear Power Research Institute School of Materials Science and Engineering North China University of Water Resources and Electric Power

To improve both oxygen evolution efficiency and stability at high temperatures, Mn, Mn+Mo, Mn+Mo+V, and Mn+Fe+V oxide electrodes were prepared on a Ti substrate, with an intermediate layer of IrO_2, by an anodic deposition method. The crystal structure, surface morphology, pore size distribution, specific surface area, and voltammetric charge were then characterized for each electrode. The results demonstrated that for Mn-O electrodes, the preferential orientation of the(100) crystal plane and the mesopore structure played negative roles in the oxygen evolution reaction. On the basis of the electrocatalytic properties of MnO2-based electrodes in seawater, the outer surface voltammetric charge at a scan rate of 500 mV·s-1 was shown to effectively indicate whether oxygen evolution reactions were preferred over chlorine evolution reactions. The Mn-O electrode exhibited oxygen evolution efficiency of only 47.27%, whereas the Mn+Mo, Mn+Mo+V and Mn+Fe+V oxide electrodes displayed oxygen evolution efficiency of nearly 100%. This means that adding Mo, V, and Fe elements to the electrode can improve its crystal structure and morphology as well as further enhancing its oxygen evolution efficiency.

关键词： electrodeposition MnO2-based electrodes oxygen evolution reaction seawater electrolysis

Effects of HMW-GS Dx2 absence on the protein aggregation characteristics and thermal stability of wheat flour during maturation

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Food Quality and Safety 2023年第2期7卷 338-347页

作者： Liye Zhao lijun song Liqun Li Xuejun Li StateKey Laboratory of Crop Stress Biology in Arid Areas and College of Agronomy Northwest A&F UniversityYanglingChina Biotechnology Branch Xinjiang Agricultural Vocational Technical CollegeChangjiChina College of Horticulture State Key Laboratory of North China Crop Improvement and RegulationHebei Agricultural UniversityBaodingChina

Background:Wheat flour maturation affects the aggregation and structural stability of *** number of high-molecular-weight glutenin subunits(HMW-GSs)differs in various wheat *** effects of Dx2 absence on the protein aggregation characteristics and thermal sta-bility of flour were investigated during 120 d of maturation using near-isogenic lines(NILs).Results:The absence of Dx2 delayed and decreased the protein aggregation of flours during maturation,*** maturation-induced increases were later and smaller for glutenin,glutenin macropolymer(GMP),glutenin/gliadin ratio,β-sheets,andβ-sheet/a-helix ratio in HMW-D1a without Dx2 than in HMW-D1p with Dx2;these differences were ascribed to the weaker interactions between the sulfhydryl(-SH)groups,disulfide bonds(-S-S-),and hydrophobicity in the flours without *** maturation caused the dough microstructures to be more compact and denser,thereby increasing the flour thermal stability as observed by a higher denaturation peak temperature(Tp),enthalpy of thermal transition(△H),and degradation temperature(Td),These changes led to better dough properties such as dough development time,dough stability time,and protein weakening,but the optimal stage in HMW-D1a without Dx2was reached ***:These findings deepen the understanding of how HMW-GS Dx2 modifies protein structures during flour maturation.

关键词： Dx2 absence disulfide bond glutenin macropolymer secondary and micro structures thermal stability wheat flour maturation

Distribution of Helium Resources in Weihe Basin,Central China:Insight from 3D Magnetic Inversion

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Journal of Earth Science 2022年第4期33卷 977-992页

作者： Xuliang Feng Bingqiang Yuan Yuhong Li Chunguan Zhang lijun song School of Earth Sciences and Engineering Xi'an Shiyou UniversityXi'an 710065China Shaanxi Key Laboratory of Petroleum Accumulation Geology Xi'an Shiyou UniversityXi'an 710065China Xi'an Center China Geological SurveyXi'an 710054China

There is promising indication of helium-rich natural gas in Weihe ***,the lack of a detailed investigation on the origin and the spatial distribution of helium source rocks(mainly Yanshanian granites)limits the helium potentiality evaluation in Weihe Basin(WB).We performed three-dimensional(3 D)inversions of magnetic data in Weihe Basin and its adjacent areas to figure out the crustal thermal structure and the temporal-spatial distribution of deep granite in the *** on this,we have proposed a geological model of helium accumulation and predicted the potential area of helium *** results of 3 D magnetic inversion indicate that the granites in the deep Weihe Basin are mostly located at the central and southern parts of the basin,which are connected spatially with the granites in the North Qinling Orogenic *** granites were all derived from largescale intra-continental orogeny in the Qinling area during the mid-Mesozoic,providing a good material basis for crust-derived helium in the *** local uplift of the Curie surface makes the thermal fluid more actively,which contributes to helium *** faults developed in the WB are the migration pathway of crust-derived helium and the upward migration of the mantle-derived *** wells with high percentage helium are mostly located near the Weihe fault and the areas on the south of *** Wugong-Xi’an-Lantian area in the central and the Lintong-Weinan-Tongguan area in the eastern Weihe Basin are the most promising helium distribution ***,the region from the north of Taibai Mountain to Baoji City in the western Weihe Basin may also be another potential area of Helium resource.

关键词： Weihe Basin helium accumulation magnetic anomaly three-dimensional inversion Curie point depth

Nano-Cs_(x)WO_(3):Ultra-broadband nonlinear optical modulator for near-infrared and mid-infrared ultrafast fiber lasers generation

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Nano Research 2022年第5期15卷 4403-4410页

作者： Nan Li Heng Jia Ming Guo Wenying Zhang Ji Wang lijun song Institute for Interdisciplinary Quantum Information Technology Jilin Engineering Normal UniversityChangchun 130052China State Key Laboratory on Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012China Peng Cheng Laboratory No.2Xingke 1st StreetShenzhen 518000China

Saturable absorbers(SAs)covering wavelengths from near-infrared(NIR)to mid-infrared(MIR)band are required for mode-locking and Q-switching lasers in muti-band ***,broadband nonlinear optical property was discovered in Cs_(x)WO_(3) nanorods(NRs),which as a novel non-stoichiometric SA for realizing ultrafast fiber lasers is first *** Cs_(x)WO_(3) NRs based SA exhibited good mode-locking ability in three key wavelengths from NIR to MIR region,which is a key advantage over the most reported broadband *** given Cs_(x)WO_(3) NRs showed a broadband optical absorption from 800 to 3,200 nm,and excellent SA properties at 1-μm,1.5-μm,and 2-μm optical *** such SA,the ultrashort pulse lasers with a pulse duration/repetition rate of 530 fs/37.42 MHz at 1,567 nm and 5.6 ps/41.50 MHz at 1,965 nm from Er-and Tm-doped fiber lasers(TDFL)were realized *** addition,a stable mode locked operation at 1,030 nm with a repetition rate of 48.80 MHz was also achieved from Yb-doped fiber laser(YDFL).This work not only offers a new and reliable broadband mode locker for ultrafast laser generation,but also broadens the application of Cs_(x)WO_(3) materials in the field of nonlinear fiber optics.

关键词： Cs_(x)WO_(3)nanorods(NRs) nonlinear optical modulator broadband saturable absorber ultrafast fiber laser

Measuring^(222)Rn in aquatic environment via Pulsed Ionization Chamber Radon Detector

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Acta Oceanologica Sinica 2023年第8期42卷 185-189,I0001-I0006页

作者： lijun song Wen Liu Shibin Zhao Chunqian Li Jinjia Guo Natasha Dimova Bochao Xu Frontiers Science Center for Deep Ocean Multispheres and Earth System/Key Laboratory of Marine Chemistry Theory and Technology of Ministry of Education Ocean University of ChinaQingdao 266100China Laboratory for Marine Ecology and Environmental Science Qingdao National Laboratory for Marine Science and TechnologyQingdao 266071China College of Chemistry and Chemical Engineering Ocean University of ChinaQingdao 266100China College of Information Science and Engineering Ocean University of ChinaQingdao 266100China R&D Center for Marine Instruments and Apparatuses Qingdao Marine Science and Technology CenterQingdao 266200China Department of Geological Sciences College of Arts and SciencesUniversity of AlabamaTuscaloosa 35487USA

Radon(Rn)is a naturally occurring radioactive inert gas in nature,and^(222)Rn has been routinely used as a powerful tracer in various aquatic environmental research on timescales of hours to days,such as submarine groundwater *** we developed a new approach to measure^(222)Rn in discrete water samples with a wide range of^(222)Rn concentrations using a Pulsed Ionization Chamber(PIC)Radon *** sensitivity of the new PIC system is evaluated at 6.06 counts per minute for 1 Bq/L when a 500 mL water sample volume is used.A robust logarithmic correlation between sample volumes,ranging from 250 mL to 5000 mL,and system sensitivity obtained in this study strongly suggests that this approach is suitable for measuring radon concentration levels in various natural *** to the currently available methods for measuring radon in grab samples,the PIC system is cheaper,easier to operate and does not require extra accessories(e.g.,drying tubes etc.)to maintain stable measurements throughout the counting procedure.

关键词： ^(222)Rn radon measurement Pulsed Ionization Chamber Radon Detector radon in discrete water samples submarine groundwater discharge

HSP70L1-mediated intracellular priming of dendritic cell vaccination induces more potent CTL response against cancer

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Cellular & Molecular Immunology 2018年第2期15卷 135-145页

作者： Shuxun Liu Lin Yi Ma Ling Jinxia Jiang lijun song Juan Liu Xuetao Cao National Key Laboratory of Medical Immunology Institute of ImmunologySecond Military Medical UniversityShanghai200433China Department of Immunology National Key Laboratory of Medical Molecular BiologyChinese Academy of Medical SciencesBeijing100730China

Heat-shock protein(HSP)-based immunotherapy is established on its adjuvant effects when applied via an extracellular approach to pulse and activate dendritic cells(DCs).Our previous studies indicate that DCs pulsed with recombinant fusion proteins of antigenic fragment and HSP70-like protein 1(HSP70L1)are potent in stimulating antigen-specific Th1 *** herein evaluated the cytotoxic T cell(CTL)response by an intracellular approach of priming DCs with transfection of recombinant adenovirus-expressing the fusion gene of the 576–699 fragment of carcinoembryonic antigen(CEA)and *** compared with DCs pulsed with extracellular fusion protein,the DCs transfected with recombinant adenovirus expressing the fusion gene displayed equivalent mature phenotypes but less inflammatory ***,the transfected DCs were superior to the pulsed DCs in inducing CEA-specific ***,immunization of HLA-A2.1/H-2Kb transgene mice with the transfected DCs could induce more quantities of HLA-A2.1-restricted CEA-specific CTLs,protecting nude mice more significantly from human CEA-expressing colon tumor challenge when adoptively *** investigation indicated that intracellular expression of the fusion protein empowered the transfected DCs by activation of STAT1 possibly via inducing IFN-βand ERK ***,the more potent ability to induce anti-CEA CTL responses enables the DCs,which transfected with recombinant adenovirus expressing the fusion gene of antigenic CEA fragment and Th1 adjuvant,as an alternative promising approach for the immunotherapy of CEA-positive tumors.

关键词： CTL dendritic cell HSP70L1 immunotherapy

Exogenous melatonin improves the chilling tolerance and preharvest fruit shelf life in eggplant by affecting ROS-and senescence-related processes

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Horticultural Plant Journal 2023年第3期9卷 523-540页

作者： lijun song Zhuo Tan Weiwei Zhang Qiang Li Zhaoxiang Jiang Shuxing Shen Shuangxia Luo Xueping Chen State Key Laboratory of North China Crop Improvement and Regulation Key Laboratory of Vegetable Germplasm Innovation and Utilization of HebeiCollaborative Innovation Center of Vegetable Industry in HebeiCollege of HorticultureHebei Agricultural UniversityBaodingHebei 071000China College of Life Sciences Hebei Agricultural UniversityBaodingHebei 071000China

Low temperature is the most common abiotic stress factors during the eggplant cultivation in solar *** plays important roles in plant resistance to low ***,the role of melatonin in regulating chilling tolerance and extending the preharvest shelf life of eggplant fruits is still *** this study,we investigated the effects of exogenous melatonin on eggplant plants and fruits in response to low *** simulated low-temperature conditions,exogenous melatonin significantly relieved the chilling symptoms of seedlings by reducing reactive oxygen species (ROS) and malondialdehyde (MDA) levels and relative leakage *** reductions were caused by higher superoxide dismutase (SOD) and catalase (CAT) activities and increased endogenous polyamine and melatonin levels compared with those in untreated ***,the expression levels of SOD,CAT1/2,and polyamine synthesis genes (ADC and ODC) were also increased by 100μmol·L~(-1)melatonin,as well as those of genes involved in melatonin synthesis (TDC,T5H,SNAT,ASMT,and COMT) and cold regulation (COR1,CBFa/b,and ZAT2/6/12).To further investigate the effects of melatonin on eggplant leaves and fruits under natural low temperature conditions,100μmol·L~(-1)melatonin was sprayed on the functional leaves at three days before commodity *** significantly alleviated chilling injury in the leaves and pericarp and extended the preharvest shelf life of the fruit by increasing the expression of COR1,CBF,ZAT2/6/12,and API5 and decreasing the expression of senescence-related genes (NCED1/2 and SAG12).Therefore,100μmol·L~(-1)melatonin improved chilling tolerance and fruit shelf life by upregulating ZAT2/6/12 to affect ROS-and senescence-related processes,which provides a reference for alleviating cold stress and extending the preharvest fruit shelf life in eggplant.

关键词： Eggplant Melatonin Chilling tolerance Cold regulation Reactive oxygen species Preharvest fruit shelf life

Porous graphene decorated silica as a new stationary phase for separation of sulfanilamide compounds in hydrophilic interaction chromatography

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Chinese Chemical Letters 2019年第4期30卷 863-866页

作者： lijun song Haijuan Zhang Tianpei Cai Jia Chen Zhan Li Ming Guan Hongdeng Qiu Laboratory on Pollution Monitoring and Control College of Chemistry and Chemical Engineering Xinjiang Normal University CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province Lanzhou Institute of Chemical Physics Chinese Academy of Sciences

Porous graphene(PG) has potential applications in numerous fields because of the existence of nanopores in the plane. In this study, porous graphene decorated silica microspheres(Sil-PG) were successfully fabricated by assembling PG onto the silica particles surface in deep eutectic solvents(DESs).Experimental results demonstrate that this new stationary phase can facilitate the separation of six sulfonamides compounds in hydrophilic chromatographic conditions. The successful synthesis of the SilPG stationary phase provides a basis for the application of porous graphene-modified materials as the stationary phase for liquid chromatography, and offers the possibility to broaden the application of PG in the field of chromatography.

关键词： Porous graphene Hydrophilic interaction chromatography Stationary phase Sulfonamides Human serum samples

Correction: HSP70L1-mediated intracellular priming of dendritic cell vaccination induces more potent CTL response against cancer

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Cellular & Molecular Immunology 2020年第1期17卷 108-109页

作者： Shuxun Liu Lin Yi Ling Ma Jinxia Jiang lijun song Juan Liu Xuetao Cao National Key Laboratory of Medical Immunology Institute of Immunology Second Military Medical University Shanghai 200433 China National Key Laboratory of Medical Molecular Biology Department of Immunology Chinese Academy of Medical Sciences Beijing 100730 China

In the published version of Fig.3D,the data of the CH and AdCtrl groups in the CFSE-Lovo/Medium panel were mistakenly presented with incorrected *** 3D has now been *** corrected version of Figure 3 is shown *** we regret our mistake during figure assembly and would like to apologize for any inconvenience it may have caused,we did not manipulate our data in any *** unintentional error also has no bearing on the workʼs scientific conclusions.

关键词： HSP70 Figure vaccination