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Electricity-driven ammonia oxidation and acetate production in microbial electrosynthesis systems

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Frontiers of Environmental Science & Engineering 2022年第4期16卷 27-36页

作者： qinjun liang Yu Gao Zhigang Li Jiayi Cai Na Chu Wen Hao Yong Jiang Raymond Jianxiong Zeng Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation College of Resources and EnvironmentFujian Agriculture and Forestry UniversityFuzhou 350002China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China

Microbial electrosynthesis(MES)is an emerging technology for producing chemicals,and coupling MES to anodic waste oxidation can simultaneously increase the competitiveness and allow additional functions to be *** this study,MES was used for the simultaneous removal of ammonia from synthetic urine and production of acetate from CO_(2).Using graphite anode,83.2%±5.3%ammonia removal and 28.4%±9.9%total nitrogen removal was achieved,with an energy consumption of 1.32 kWh/g N for total nitrogen removal,0.45 kWh/g N for ammonia nitrogen removal,and 0.044 kWh/g for acetate *** boron-doped diamond(BDD)anode,70.9%±12.1%ammonia removal and 51.5%±11.8%total nitrogen removal was obtained,with an energy consumption of 0.84 kWh/g N for total nitrogen removal,0.61 kWh/g N for ammonia nitrogen removal,and 0.043 kWh/g for acetate production.A difference in nitrate accumulation explained the difference of total nitrogen removal *** of ammonia and acetate across the membrane deteriorated the performance of *** results are important for the development of novel elcctricity-driven technologies for chemical production and pollution removal.

关键词： Biocathode Carbon dioxide Electrochemical oxidation Graphite anode Boron-doped diamond

Deep Learning and Network Analysis:Classifying and Visualizing Geologic Hazard Reports

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Journal of Earth Science 2024年第4期35卷 1289-1303页

作者： Wenjia Li liang Wu Xinde Xu Zhong Xie qinjun Qiu Hao Liu Zhen Huang Jianguo Chen School of Geography and Information Engineering China University of GeosciencesWuhan430078China Key Laboratory of Geological Survey and Evaluation of Ministry of Education China University of GeosciencesWuhan430078China School of Computer Science China University of GeosciencesWuhan430078China Key Laboratory of Urban Land Resources Monitoring and Simulation Ministry of Natural ResourcesShenzhen518034China Hubei Key Laboratory of Intelligent Vision Based Monitoring for Hydroelectric Engineering China Three Gorges UniversityYichang443002China Wuhan Geomatics Institute Wuhan430074China Faculty of Earth Resources China University of GeosciencesWuhan430074China

If progress is to be made toward improving geohazard management and emergency decision-making,then lessons need to be learned from past geohazard information.A geologic hazard report provides a useful and reliable source of information about the occurrence of an event,along with detailed information about the condition or factors of the *** such reports,however,can be a challenging process because these texts are often presented in unstructured long text formats,and contain rich specialized and detailed *** text classification is commonly used to mine disaster text data in open domains(e.g.,news and microblogs).But it has limitations to performing contextual long-distance dependencies and is insensitive to discourse *** deficiencies are most obviously exposed in long text ***,this paper uses the bidirectional encoder representations from Transformers(BERT),to model long ***,utilizing a softmax layer to automatically extract text features and classify geohazards without manual *** latent Dirichlet allocation(LDA)model is used to examine the interdependencies that exist between causal variables to visualize *** proposed method is useful in enabling the machine-assisted interpretation of text-based ***,it can help users visualize causes,processes,and other geohazards and assist decision-makers in emergency responses.

关键词： geologic hazard network analysis latent dirichlet allocation text classification deep learning

流动电极微生物电合成提高产物生成速率及降低能量消耗

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Engineering 2023年第6期25卷 157-167,M0007页

作者：褚娜王东麟王厚锋梁勤军常佳丽高瑜蒋永曾建雄 Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation College of Resources and EnvironmentFujian Agriculture and Forestry UniversityFuzhou 350002China CAS Key Laboratory of Environmental and Applied Microbiology Environmental Microbiology Key Laboratory of Sichuan ProvinceChengdu Institute of BiologyChinese Academy of SciencesChengdu 610041China State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Division of Environmental Engineering School of ChemistryResources and EnvironmentLeshan Normal UniversityLeshan 614000China

微生物电合成(microbial electrosynthesis,MES)利用可再生电力驱动微生物固定CO_(2)合成化学品,在推进碳循环经济中具有一定潜力,受到广泛关注。但是,很少有研究通过高效反应器设计来促进产乙酸并降低能耗。本研究中,新型流动电极MES... 详细信息

微生物电合成(microbial electrosynthesis,MES)利用可再生电力驱动微生物固定CO_(2)合成化学品,在推进碳循环经济中具有一定潜力,受到广泛关注。但是,很少有研究通过高效反应器设计来促进产乙酸并降低能耗。本研究中,新型流动电极MES反应器的总产乙酸速率[(16±1)g·m^(-2)·d^(-1)]比无粉末活性炭(powder activated carbon,PAC)对照[(8±3)g·m^(-2)·d^(-1)]高两倍。流动电极MES反应器的库伦效率为43.5%±3.1%,能量消耗为(0.020±0.005)k Wh·g^(-1),产乙酸的能量效率为18.7%±1.3%。基于PAC的流动电极能够降低水跨膜通量、传质阻力,但是对装置电压、流变行为、乙酸吸附的影响较小。流动电极MES反应器中,能量代谢相关基因高表达,Acetobacterium的丰度增加。MES反应器中同时存在用于碳固定的还原性乙酰辅酶A途径(Wood–Ljungdahl pathway,WLP)与还原性三羧酸循环途径(reductive citric acid cycle,r TCA)。堆叠型流动电极MES中的乙酸浓度达7.0 g·L^(-1)。本研究提供一种构建可扩展MES反应器的新方法,促进CO_(2)利用以及产物生成。

关键词：微生物电合成乙酸浓度能量消耗三羧酸循环传质阻力生成速率能量效率粉末活性炭

基于MODFLOW的贺江岩溶流域地下水资源评价

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桂林理工大学学报 2024年第2期44卷 217-224页

作者：康志强张勤军刘玲贝为昶袁金福梁爽黄春阳广西壮族自治区地质矿产勘查开发局南宁530023 广西壮族自治区地质调查院南宁530023 自然资源部国土(耕地)生态监测与修复工程技术创新中心江苏省地质调查研究院南京210018

运用地下水模拟软件MODFLOW构建了贺江上游岩溶流域的数值模型,在地下河发育部位,采用Drain模块刻画查明的地下河岩溶管道,利用区域地下水监测数据和枯水期地下河实测流量进行模型校正。该模型能较好地反映区域地下水位动态变化及不同... 详细信息

运用地下水模拟软件MODFLOW构建了贺江上游岩溶流域的数值模型,在地下河发育部位,采用Drain模块刻画查明的地下河岩溶管道,利用区域地下水监测数据和枯水期地下河实测流量进行模型校正。该模型能较好地反映区域地下水位动态变化及不同类型含水层间水资源的补排关系,以及地下河枯季流量。模拟结果显示,降水量偏少时段,区内地下水处于亏损状态,丰水期获得大气降水补给后逐渐盈余。模拟期内,降水对地下水的补给量为3.54×108 m3,地下水排泄量为3.41×108 m3。区内岩溶含水层的主要补给来源为大气降水,年均贡献率66.0%;其次为花岗岩裂隙水,年均贡献量14.3%;碎屑岩裂隙水对岩溶水的补给贡献量仅为7.9%。花岗岩风化裂隙含水层具有良好的调蓄能力,其在枯水期对岩溶含水层的补给贡献大于大气降水。

关键词：岩溶流域 MODFLOW 地下水资源评价贺江

The importance of proleptic branch traits in biomass production of poplar in high-density plantations

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Journal of Forestry Research 2022年第2期33卷 463-473页

作者： Changjun Ding Ningning Wang qinjun Huang Weixi Zhang Juan Huang Suli Yan Boyi Chen Dejun liang Yufeng Dong Yingbai Shen Xiaohua Su State Key Laboratory of Tree Genetics and Breeding Research Institute of ForestryChinese Academy of ForestryBeijingPeople’s Republic of China Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration Research Institute of ForestryChinese Academy of ForestryBeijingPeople’s Republic of China College of Biological Sciences and Technology Beijing Forestry UniversityBeijing 100083People’s Republic of China National Engineering Laboratory for Tree Breeding Beijing Forestry UniversityBeijing 100083People’s Republic of China Liaoning Provincial Poplar Institute Gaizhou 115200LiaoningPeople’s Republic of China Shandong Provincial Key Laboratory of Forest Tree Genetic Improvement Shandong Academy of ForestryJinan 250014ShandongPeople’s Republic of China

Branch phenotypic traits determine tree crown architecture,which in turn governs leaf display,light interception,and biomass *** and proleptic branches are the obviously different branch phenotypes in the poplar *** studies have focused on the influence of sylleptic branch numbers(SBN)on biomass production,but the research on the influence of proleptic branch phenotypes was only a *** explore the relationship between proleptic branch traits and biomass generation production in a high-density poplar plantation,we investigated the branch phenotypic traits of three poplar genotypes,all of which have high survival rates in forests(>95%)and significantly different crown architecture and biomass performance in the high-density plantations(1667 stems ha−1).The plantation site was established in 2007.A terrestrial laser scanner was used to measure branch characteristics such as length,angle of origin and termination,and azi-muth angle.A hierarchical cluster analysis performed on branch characteristics showed that SBN,crown depth,and proleptic branch curvature(PBC)were clustered with bio-mass production and leaf area index(LAI).Among all of the monitored traits,PBC played the second most important role in biomass production after SBN and was significantly correlated with SBN,LAI,and biomass *** positive correlation between PBC and SBN indicated that a larger PBC was associated with more sylleptic branches within the monitored genotypes planted in the high-density plantation,providing greater leaf area and biomass *** results of this study will improve the identification of high-production poplar varieties for cultivation in high-density plantations for biofuel production.

关键词： Populous Crown architecture Sylleptic branch Proleptic branch Biomass production Terrestrial laser scanner

GLUT1-mediated effective anti-miRNA21 pompon for cancer therapy

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Acta Pharmaceutica Sinica B 2019年第4期9卷 832-842页

作者： Qin Guo Chao Li Wenxi Zhou Xinli Chen Yu Zhang Yifei Lu Yujie Zhang qinjun Chen Donghui liang Tao Sun Chen Jiang Key Laboratory of Smart Drug Delivery Ministry of Education State Key Laboratory of Medical Neurobiology Department of Pharmaceutics School of Pharmacy Fudan University

Oncogenic microRNAs are essential components in regulating the gene expression of cancer cells. Especially miR21, which is a major player involved of tumor initiation, progression, invasion and metastasis in several cancers. The delivery of anti-miR21 sequences has significant potential for cancer treatment. Nevertheless, since anti-miR21 sequences are extremely unstable and they need to obtain certain concentration to function, it is intensely difficult to build an effective delivery system for *** purpose of this work is to construct a self-assembled glutathione(GSH)-responsive system with tumor accumulation capacity for effective anti-miR21 delivery and cancer therapy. A novel drug delivery nanosphere carrying millions of anti-miR21 sequences was developed through the rolling circle transcription(RCT) method. GSH-responsive cationic polymer polyethyleneimine(pOEI) was synthesized to protect the nanosphere from degradation by Dicer or other RNase in normal cells and optimize the pompon-like nanoparticle to suitable size. Dehydroascorbic acid(DHA), a targeting molecule, which is a substrate of glucose transporter 1(GLUT 1) and highly expressed on malignant tumor cells, was connected to pOEI through PEG, and then the polymer was used for contracting a RNA nanospheres into nanopompons. The anti-miR21 nanopompons showed its potential for effective cancer therapy.

关键词： MiRNA21 Dehydroascorbic acid Rolling circle transcription Self-assembly RNAi nanoparticle Tumor-targeting Nanomedicine Cancer treatment

Absence of BCS–BEC crossover in FeSe0.45Te0.55 superconductor

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Chinese Physics B 2024年第7期33卷 89-96页

作者：贾俊杰谷亚东殷超辉束英杰陈逸雯史聚民张杏陈浩苗泰民任晓琳梁波朱文培蔡能张丰丰张申金杨峰王志敏彭钦军许祖彦毛寒青刘国东任治安赵林周兴江 National Laboratory for Superconductivity Beijing National Laboratory for Condensed Matter PhysicsInstitute of Physics Chinese Academy of Sciences University of Chinese Academy of Sciences Technical Institute of Physics and Chemistry Chinese Academy of Sciences Songshan Lake Materials Laboratory

In iron-based superconductor Fe（Se,Te）, a flat band-like feature near the Fermi level was observed around the Brillouin zone center in the superconducting state. It is under debate whether this is the evidence on the presence of the BCS–BEC[Bardeen–Cooper–Schrieffer（BCS）, Bose–Einstein condensation（BEC）] crossover in the superconductor. High-resolution laser-based angle-resolved photoemission measurements are carried out on high quality single crystals of FeSe0.45Te0.55superconductor to address the issue. By employing different polarization geometries, we have resolved and isolated the dyz band and the topological surface band, making it possible to study their superconducting behaviors separately. The dyz band alone does not form a flat band-like feature in the superconducting state and the measured dispersion can be well described by the BCS picture. We find that the flat band-like feature is formed from the combination of the dyz band and the topological surface state band in the superconducting state. These results reveal the origin of the flat band-like feature and rule out the presence of BCS-BEC crossover in Fe（Se,Te） superconductor.

关键词： FeSe_(0.45)Te_(0.55) ARPES electronic structure superconducting gap BCS-BEC crossover

面向灾害应急响应的地质灾害链知识图谱构建方法

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地球科学 2023年第5期48卷 1875-1891页

作者：邱芹军吴亮马凯谢忠陶留锋中国地质大学计算机学院湖北武汉430078 三峡大学计算机与信息学院湖北宜昌443002 湖北省水电工程智能视觉监测重点实验室湖北宜昌443002 湖北省农田环境监测工程技术研究中心湖北宜昌443002

知识图谱是形式化描述实体及其相互关系的知识系统,其在应急救灾、时空预测决策等方面发挥着重要的作用.灾害应急领域面临数据骤增而应急关键知识匮乏问题,由此从灾害链角度分析地质灾害发展过程中关联的诸多要素,提出了一种自顶向下和... 详细信息

知识图谱是形式化描述实体及其相互关系的知识系统,其在应急救灾、时空预测决策等方面发挥着重要的作用.灾害应急领域面临数据骤增而应急关键知识匮乏问题,由此从灾害链角度分析地质灾害发展过程中关联的诸多要素,提出了一种自顶向下和自底向上结合的地质灾害链知识图谱构建方法.首先,基于灾害链角度对地质灾害间复杂形成机理及成链规律进行分析,在已有地质灾害知识基础上,基于自顶向下方法建立了统一的用于信息抽取的地质灾害链本体语义表达框架,包括描述地质灾害知识体系的地质灾害事件本体、承载地质灾害发生的地质环境本体、受地质灾害作用下的地理对象本体及地质灾害在灾前、灾中和灾后时空过程中对应的应急处置方法本体;其次,结合自底向上方法构建数据层,通过知识融合、知识存储对概念、实例与属性等要素及其关联关系进行识别;最后以汶川地震为例并对知识图谱进行可视化表达.结果表明,本方法能有效地对四类要素及其关系进行识别,实现了数据‒信息‒知识的转换,为地质灾害领域的知识图谱构建提供技术参考.

关键词：地质灾害链知识图谱领域本体自然语言处理应急响应灾害地质.

Temperature-induced Lifshitz transition in topological insulator candidate HfTe_5

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Science Bulletin 2017年第13期62卷 950-956页

作者： Yan Zhang Chenlu Wang Guodong Liu Aiji liang Lingxiao Zhao Jianwei Huang Qiang Gao Bing Shen Jing Liu Cheng Hu Wenjuan Zhao Genfu Chen Xiaowen Jia Li Yu Lin Zhao Shaolong He Fengfeng Zhang Shenjin Zhang Feng Yang Zhimin Wang qinjun Peng Zuyan Xu Chuangtian Chen Xingjiang Zhou Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of Sciences University of Chinese Academy of Sciences Collaborative Innovation Center of Quantum Matter Military Transportation University Technical Institute of Physics and Chemistry Chinese Academy of Sciences

The ongoing discoveries and studies of novel topological quantum materials have become an emergent and important field of condensed matter physics. Recently, Hfres ignited renewed interest as a candidate of a novel topological material. The single-layer Hffes is predicted to be a tWOldimensional large band gap topological insulator and can be stacked into a bulk that may host a temperatureldriven topological phase transition. Historically, Hfres attracted considerable interest for its anomalous transport properties characterized by a peculiar resistivity peak accompanied by a sign reversal carrier type. The origin of the transport anomaly remains under a hot debate. Here we report the first high-resolution laserlbased anglelresolved photoemission measurements on the temperature-dependent electronic structure in Hffes. Our results indicated that a temperature-induced Lifshitz transition occurs in Hffes, which provides a natural understanding on the origin of the transport anomaly in Hffe~. In addition, our observa- tions suggest that Hffes is a weak topological insulator that is located at the phase boundary between weak and strong topological insulators at very low temperature.

关键词： HtTe5 ZrTe5 Lifshitz transition Topological insulators Angle-resolved photoemission spectroscopy(ARPES)