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多生物相菌胶团生物滤床应用总结

中国环保产业 2024年第2期 32-34页

作者：管刚梁柏英袁权民江西百舸环保科技有限公司江西宜春336000 厦门路桥景观艺术有限公司福建厦门361006 江西奇能环保科技有限公司江西宜春336000

文章总结了多生物相菌胶团生物滤床在农村生活污水分户式处理模式中的运行效果,其既可省去修建长距离污水收集管网工程的费用,又可将后续运维责任分摊到户,解决运维难题,还可提高村民生态环境保护意识,促进农村生活污水治理的可持续性。

关键词：农村生活污水多生物相菌胶团分户式处理模式生物滤床原位处理

Multielectron reaction of AlCl_(n) in borophene for rechargeable aluminum batteries

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Energy Material Advances 2022年第1期2022卷 33-44页

作者： Lumin Zheng Haoyi Yang ying bai Chuan Wu Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science&EngineeringBeijing Institute of TechnologyBeijing 100081PR China Yangtze Delta Region Academy of Beijing Institute of Technology Jiaxing 314019PR China

As a new 2-dimensional material,borophene is expected to be used in energy storage devices because of its unique electronic ***,its utilization in rechargeable aluminum batteries(RABs)is limited by high valence of Al(3s^(2)3p^(1)).Namely,the Al adsorption borophene is too weak to carry on a multielectron ***,we investigate the origin of unfavorable Al adsorption on borophene that lies at the repulsion of lone pair electrons of 3s orbital with electron-gaining *** of the existing AlCl_(n) compounds during the charging and discharging,we introduce AlCl_(4)^(-),AlCl^(2+),and AlCl^(2+)ions as possible redox carrier in RABs for the first *** sharp contrast,multielectron(over 2 electrons per Al)reaction and high capacity(841 mAh/g for[AlCl]_(0.33)B)can be achieved as a result of Cl *** addition,the diffusion barrier of AlCl^(2+)compound is only 0.08 ***,the binding of Al and Cl in the form of coordinations liberates the electrons in stable states of 3s orbital,breaking the limit of electron transfer on borophene as cathode materials,thus promoting the adsorption of AlCl_(n) *** addition,the energy barrier of the reaction between Al 3s electrons and borophene is decreased in the degenerated *** of the effect of Cl coordination,borophene is suitable for AlCl_(n) storage,not Al3+.These results offer a new insight of the interplay of AlCl_(n) carrier and multielectron reactions in RABs.

关键词： reaction adsorption

一种谷氨酸棒杆菌4-异丙基苯甲酸诱导型启动子的设计与应用

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生物技术通报 2024年第7期40卷 108-116页

作者：毋舒宁苏永平李冬雪柏映国刘波张志伟山西农业大学林学院太谷030801 中国农业科学院生物技术研究所北京100081 中国农业科学院北京畜牧兽医研究所北京100193

【目的】谷氨酸棒杆菌是一种重要的工业微生物,挖掘可调控性元件可有效拓展谷氨酸棒杆菌研究和应用的广度和深度。【方法】在谷氨酸棒杆菌组成型强启动子P_(H10)上嵌入阻遏蛋白CymR结合的操纵序列CuO,构建了4-异丙基苯甲酸(Cumate)为诱... 详细信息

【目的】谷氨酸棒杆菌是一种重要的工业微生物,挖掘可调控性元件可有效拓展谷氨酸棒杆菌研究和应用的广度和深度。【方法】在谷氨酸棒杆菌组成型强启动子P_(H10)上嵌入阻遏蛋白CymR结合的操纵序列CuO,构建了4-异丙基苯甲酸(Cumate)为诱导剂的启动子P_(H10-CuO)。【结果】绿色荧光蛋白作为报告基因的实验结果显示,无诱导剂时,谷氨酸棒杆菌工程菌相对荧光强度较低;以25μg/mL 4-异丙基苯甲酸诱导12 h时,谷氨酸棒杆菌工程菌荧光强度达62000,证明P_(H10-CuO)具有很好的严谨性和诱导表达强度。构建了以启动子P_(H10-CuO)调控recET和Cas12a表达的谷氨酸棒杆菌基因编辑质粒,实现谷氨酸棒杆菌染色体上靶标基因的精准编辑和外源基因插入。【结论】诱导型启动子P_(H10-CuO)具有表达强度高且渗漏表达低的特点,可用于谷氨酸棒杆菌中被其调控基因的时序性表达。

关键词：谷氨酸棒杆菌诱导型启动子阻遏蛋白CymR 4-异丙基苯甲酸

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Fluid evolution and hydrocarbon accumulation model of ultra-deep gas reservoirs in Permian Qixia Formation of northwest Sichuan Basin,SW China

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Petroleum Exploration and Development 2022年第4期49卷 719-730页

作者： LI Jianzhong bai Bin bai ying LU Xuesong ZHANG Benjian QIN Shengfei SONG Jinmin JIANG Qingchun HUANG Shipeng Research Institute of Petroleum Exploration&Development PetroChinaBeijing 100083China Research Institute of Petroleum Exploration&Development of PetroChina Southwest Oil&Gas Field Company Chengdu 610051China College of Energy Resources Chengdu University of TechnologyChengdu 610059China

The fluid evolution and reservoir formation model of the ultra-deep gas reservoirs in the Permian Qixia Formation of the northwestern Sichuan Basin are investigated by using thin section,cathodoluminescence,inclusion temperature and U-Pb isotopic dating,combined with gas source identification plates and reservoir formation evolution profiles established based on burial history,thermal history,reservoir formation history and diagenetic evolution *** fluid evolution of the marine ultra-deep gas reservoirs in the Qixia Formation has undergone two stages of dolomitization and one phase of hydrothermal action,two stages of oil and gas charging and two stages of associated burial *** diagenetic fluids include ancient seawater,atmospheric freshwater,deep hydrothermal fluid and hydrocarbon *** two stages of hydrocarbon charging happened in the Late Triassic and Late Jurassic–Early Cretaceous respectively,and the Middle to Late Cretaceous is the period when the crude oil cracked massively into *** gas reservoirs in deep marine Permian strata of northwest Sichuan feature multiple source rocks,composite transportation,differential accumulation and late *** natural gas in the Permian is mainly cracked gas from Permian marine mixed hydrocarbon source rocks,with cracked gas from crude oil in the deeper Sinian strata in local *** scale development of paleo-hydrocarbon reservoirs and the stable and good preservation conditions are the keys to the forming large-scale gas reservoirs.

关键词： Sichuan Basin northwest Sichuan Basin Permian Qixia Formation accumulation evolution fluid sources hydrocarbon charging gas accumulation

房水Sema3A、Klotho、SDF-1与增生型糖尿病视网膜病变患者术后新生血管性青光眼的关系研究

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现代生物医学进展 2024年第12期24卷 2356-2360页

作者：曾春梅邓斌白莹李颖媛梁光丽成都市第六人民医院眼科四川成都610051

目的:探讨房水信号素3A(Sema3A)、克洛索(Klotho)、基质细胞衍生因子-1(SDF-1)与增生型糖尿病视网膜病变(PDR)患者术后新生血管性青光眼(NVG)的关系。方法:选取2021年1月~2022年1月成都市第六人民医院收治的145例接受玻璃体切割术PDR患... 详细信息

目的:探讨房水信号素3A(Sema3A)、克洛索(Klotho)、基质细胞衍生因子-1(SDF-1)与增生型糖尿病视网膜病变(PDR)患者术后新生血管性青光眼(NVG)的关系。方法:选取2021年1月~2022年1月成都市第六人民医院收治的145例接受玻璃体切割术PDR患者,根据术后1年是否发生NVG分为NVG组和非NVG组。酶联免疫吸附法检测房水Sema3A、Klotho、SDF-1水平。采用多因素Logistic回归分析影响PDR患者术后NVG的因素,受试者工作特征(ROC)曲线分析房水Sema3A、Klotho、SDF-1对PDR患者术后NVG的预测价值。结果:PDR患者随访1年,术后NVG发生率为17.24%。与非NVG组比较,NVG组房水Sema3A、SDF-1水平升高,Klotho水平降低(P<0.05)。多因素Logistic回归分析显示,术前虹膜新生血管和Sema3A、SDF-1升高为影响PDR患者术后NVG的独立危险因素,Klotho升高为独立保护因素(P<0.05)。ROC曲线分析显示,房水Sema3A、Klotho、SDF-1联合预测PDR患者术后NVG的曲线下面积(AUC)为0.913,大于房水Sema3A、Klotho、SDF-1单独预测的0.796、0.794、0.800。结论:房水Sema3A、SDF-1升高和Klotho降低与PDR患者术后NVG发生密切相关,房水Sema3A、Klotho、SDF-1联合检测对PDR患者术后NVG具有较高的预测价值。

关键词：增生型糖尿病视网膜病变 Sema3A Klotho SDF-1 新生血管性青光眼

Surface engineering based on in situ electro-polymerization to boost the initial Coulombic efficiency of hard carbon anode for sodium-ion battery

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Rare Metals 2022年第5期41卷 1616-1625页

作者： Cheng-Xin Yu Yu Li Zhao-Hua Wang Xin-Ran Wang ying bai Chuan Wu Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science&EngineeringBeijing Institute of TechnologyBeijing 100081China Yangtze Delta Region Academy of Beijing Institute of Technology Jiaxing 314019China

Hard carbon(HC) is considered as a commercial candidate for anode materials of sodium-ion batteries due to its low cost and excellent capacity. However, the problem of low initial Coulombic efficiency is still urgently needed to be solved to promote the industrialization of *** this paper, 2,2-dimethylvinyl boric acid(DEBA) is used to modify the surface of HC to prepare HC-DEBA materials. During the cycling, the C = C bonds of DEBA molecules will be in situ electro-polymerized to form a polymer network, which can act as the passive protecting layer to inhibit irreversible decomposition of electrolyte,and induce a thinner solid electrolyte interface with lower interface impedance. Therefore, HC-DEBA has higher initial Coulombic efficiency and better cycling stability. In ester-based electrolyte, the initial Coulombic efficiency of the optimized HC-DEBA-3% increases from 65.2% to77.2%. After 2000 cycles at 1 A·g^(-1), the capacity retention rate is 90.92%. Moreover, it can provide a high reversible capacity of 294.7 m Ah·g^(-1) at 50 mA·g^(-1). This simple surface modification method is ingenious and versatile,which can be extended to other energy storage materials.

关键词： Sodium-ion battery Hard carbon Initial Coulombic efficiency Solid electrolyte interface Surface modification Ester electrolyte

State Accurate Representation and Performance Prediction Algorithm Optimization for Industrial Equipment Based on Digital Twin

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Intelligent Automation & Soft Computing 2023年第9期37卷 2999-3018页

作者： ying bai Xiaoti Ren Hong Li School of Artificial Intelligence and Big Data Hefei UniversityHefei230601China Anhui Imagine Industrial Technology Co. Ltd.Hefei230088China

The combination of the Industrial Internet of Things(IIoT)and digital twin(DT)technology makes it possible for the DT model to realize the dynamic perception of equipment status and ***,conventional digital modeling is weak in the fusion and adjustment ability between virtual and real *** performance prediction based on experience greatly reduces the inclusiveness and accuracy of the *** this paper,a DT-IIoT optimization model is proposed to improve the real-time representation and prediction ability of the key equipment ***,a global real-time feedback and the dynamic adjustment mechanism is established by combining DT-IIoT with algorithm ***,a strong screening dual-model optimization(SSDO)prediction method based on Stacking integration and fusion is proposed in the dynamic regulation *** screening and multi-round optimization are used to improve the prediction accuracy of the evolution ***,tak-ing the boiler performance of a power plant in Shanxi as an example,the accurate representation and evolution prediction of boiler steam quantity is *** results show that the real-time state representation and life cycle performance prediction of large key equipment is optimized through these *** self-lifting ability of the Stacking integration and fusion-based SSDO prediction method is 15.85%on average,and the optimal self-lifting ability is 18.16%.The optimization model reduces the MSE loss from the initial 0.318 to the optimal 0.1074,and increases R2 from the initial 0.731 to the optimal *** adaptability and reliability of the model are comprehensively improved,and better prediction and analysis results are *** ensures the stable operation of core equipment,and is of great significance to comprehensively understanding the equipment status and performance.

关键词： Digital twin(DT) digital representation transfer learning dual model optimization information fusion

Regulating Uniform Zn Deposition via Hybrid Artificial Layer for Stable Aqueous Zn-Ion Batteries

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Energy Material Advances 2022年第1期2022卷 85-100页

作者： Jingjing Yang Ran Zhao Yahui Wang ying bai Chuan Wu Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science&EngineeringBeijing Institute of TechnologyBeijing 100081China Yangtze Delta Region Academy of Beijing Institute of Technology Jiaxing 314019China

Aqueous Zn-ion batteries(ZIBs)have great potential as promising candidates for next-generation energy conversion and storage devices,benefiting from competitive theoretical capacity,low cost,and high ***,further applications of ZIBs are impeded by dendrite generation and side ***,considering that Zn dendrites are caused by nonuniform metal deposition,involving uneven electric field and Zn^(2+)ion flux,a dual-functional carbon-coated NaTi_(2)(PO_(4))_(3)(NTP-C)artificial protective layer with large surface area is constructed onto the surface of metallic Zn to stabilize Zn anode and regulate uniform Zn *** from a synergistic strategy,NTP-C coating not only takes advantages of carbon to provide abundant Zn deposition sites to homogenize nucleation,adjust electric field distribution,and reduce local current density but also utilizes the ionic channel in NTP structure to modulate the distribution of Zn^(2+)flux at the same ***,the NTP-C@Zn symmetrical cell exhibits a stable cycling for more than 600 h with a low polarization(18.6 mV)at 1mAcm^(−2)/1 mAh cm^(−2).Especially,the NTP-C@Zn symmetrical cell even enables a steady plating/stripping process at a harsh condition(100mAcm^(−2))without short circuit,indicating a potential application of high-load electrodes or ***,the NTP-C@Zn//α-MnO_(2)full cell also displays enhanced electrochemical performance for 1200 cycles with a capacity retention of 76.6%under 5C(~1.5A g^(−1)).This work provides a synergistic strategy combining two protective mechanisms and delivers new inspirations for the improvement of stable Zn anode in aqueous ZIBs.

关键词： cycling coating protective

复杂热冲压模具型面的激光熔覆强化及摩擦磨损控制技术

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锻压技术 2024年第3期49卷 186-193页

作者：陈炜王逸凡刘杰曹一枢白瑛陈春刚张小计江苏大学机械工程学院江苏镇江212013 无锡曙光精密工业有限公司江苏无锡214145

由于服役条件恶劣,热冲压模具的工作型面容易产生磨损与裂纹,而传统强化方式在减小模具磨损的同时存在诸多限制。为了实现复杂模具型面的熔覆,通过机械手和变位机变姿实现了激光熔覆路径优化,并采用差温往复式摩擦磨损实验装置模拟了热... 详细信息

由于服役条件恶劣,热冲压模具的工作型面容易产生磨损与裂纹,而传统强化方式在减小模具磨损的同时存在诸多限制。为了实现复杂模具型面的熔覆,通过机械手和变位机变姿实现了激光熔覆路径优化,并采用差温往复式摩擦磨损实验装置模拟了热冲压工况,分析了激光熔覆层的摩擦磨损性能。研究结果表明,铁基粉末与钴基粉末两种熔覆层均能有效减小摩擦因数与模面磨损量,其中Stellite 12钴基粉末的激光熔覆层的摩擦因数与磨损量最小。扫描电子显微镜观测发现,Fe901铁基粉末与Stellite 12钴基粉末的激光熔覆层表面出现的氧化层与化合物起到了润滑减磨作用,实现了模面磨损控制。

关键词：激光熔覆摩擦磨损热冲压模具铁基粉末钴基粉末