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Carbon dioxide adsorption behaviors of aluminum-pillared montmorillonite-supported alkaline earth metals

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Journal of Environmental Sciences 2020年第12期32卷 109-117页

作者： Kai wu Qing ye Runping wu Sha Chen Hongxing Dai Key Laboratory of Beijing on Regional Air Pollution Control Department of Environmental ScienceCollege of Environmental and Energy EngineeringBeijing University of TechnologyBeijing 100124China Beijing Key Laboratory for Green Catalysis and Separation Key Laboratory of Beijing on Regional Air Pollution ControlKey Laboratory of Advanced Functional MaterialsEducation Ministry of Chinaand Laboratory of Catalysis Chemistry and NanoscienceDepartment of Chemistry and Chemical EngineeringCollege of Environmental and Energy EngineeringBeijing University of TechnologyBeijing 100124China

The Al-pillared montmorillonite-supported alkaline earth metal 5M/Al-PILC(PILC = pillared clay, M = Mg, Ca, Sr, and Ba) and x Mg/Al-PILC( x = 1, 3, 5, and 7 wt.%) samples were prepared using an impregnation method. Physical properties of the materials were determined by means of X-ray diffraction(XRD) and N2 adsorption-desorption, and their CO2 adsorption behaviors were investigated using the thermogravimetric analyzer(TG), CO2 temperatureprogrammed desorption(CO2-TPD), and in situ diffuse reflectance infrared transform spectroscopy(in situ-DRIFTS) techniques. It is shown that 5 Mg/Al-PILC possessed the highest CO2 adsorption capacity(2.559 mmol/g). The characterization results indicate that Alpillaring increased the specific surface area of montmorillonite, which was beneficial for the adsorption of CO2. The CO2 adsorption process on the sample was mainly chemical adsorption, and alkalinity was the main factor influencing its adsorption capacity. The alkalinity of the sample was enhanced by loading an appropriate amount of alkaline earth metal, and the adsorbed CO2 was present in the form of bicarbonate and carbonate. In addition, the 5Mg/Al-PILC sample exhibited an excellent regeneration efficiency. We believe that the outcome of this research would provide a good option for developing highly effective CO2 adsorption materials.

关键词： Montmorillonite Al-pillaring Adsorbent CO2 adsorption Alkaline earth metal

Liquid-metals-induced formation of MXene/polyacrylamide composite organohydrogels for wearable flexible electronics

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Nano Research 2024年第3期17卷 1913-1922页

作者： Minying wu Bin Chen Xueliang Fan Tong ye Yuanyuan Fang Qian Zhang Fangzhou Zhou Yajun Wang yi Tang Department of Chemistry Fudan UniversityShanghai 200433China College of Chemistry&Materials Engineering Wenzhou UniversityWenzhou 325027China

Organohydrogels have demonstrated superior environmental adaptability and frost resistance compared to conventional hydrogels,thereby prompting considerable interests in the development and design of innovative ***,we report an effective one-pot method for fabricating MXene/polyacrylamide(MXene/PAM)composite organohydrogel(MAOH)by employing Ga liquid metals(Ga LMs)as a highly reactive component in the induced free radical polymerization reaction,without the need for additional heating or cross-linking *** synthetic protocol addresses the time-consuming and organic solvent waste concerns associated with traditional solvent displacement methods for organohydrogel *** incorporation of MXene not only highly enhances the conductivity but also confers improved mechanical properties of *** MAOH exhibits excellent environmental adaptability(>7 d),sustained moisture retention,remarkable self-healing capabilities,and outstanding mechanical properties under low temperatures(-20℃).It demonstrates exceptional performance in micro-motion monitoring,rapid response time(125 ms),superior stretchability,and a broad range of strains(0.3%–600%).Therefore,the designed MAOH has great potential for applications in diverse fields such as prosthetics,electronic skin,human–machine interaction,and smart terminals.

关键词： organohydrogels MXene conductivity mechanical properties environmental adaptability

Enhanced AC Fault Ride-through Control for MMC-integrated System Based on Active PCC Voltage Drop

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Journal of Modern Power Systems and Clean Energy 2023年第4期11卷 1316-1330页

作者： Haihan ye wu Chen Heng wu wu Cao Guoqing He Guanghui Li Center for Advanced Power Conversion Technology and Equipment School of Electrical EngineeringSoutheast UniversityNanjing 210096China Department of Energy Technology Aalborg University9220 AalborgDenmark China Electric Power Research Institute Beijing 100192China

When a renewable energy station(RES)connects to the rectifier station(RS)of a modular multilevel converterbased high-voltage direct current(MMC-HVDC)system,the voltage at the point of common coupling(PCC)is determined by RS control *** example,RS control may become saturated under fault,and causes the RS to change from an equivalent voltage source to an equivalent current source,making fault analysis more *** addition,the grid code of the fault ride-through(FRT)requires the RES to output current according to its terminal *** changes the fault point voltage and leads to RES voltage regulation and current redistribution,resulting in fault response *** address these issues,this study describes how an MMC-integrated system has five operation modes and three common characteristics under the duration of the *** study also reveals several instances of RS performance degradation such as AC voltage loop saturation,and shows that RS power reversal can be significantly *** enhanced AC FRT control method is proposed to achieve controllable PCC voltage and continuous power transmission by actively reducing the PCC voltage *** robustness of the method is theoretically proven under parameter variation and operation mode ***,the feasibility of the proposed method is verified through MATLAB/Simulink results.

关键词： Modular multilevel converter-based high-voltage direct current(MMC-HVDC)system fault ride-through(FRT) voltage loop saturation continuous power transmission point of common coupling(PCC) active voltage drop control

Assessment of the forensic application of 50 Y-STR markers in a large pedigree

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Forensic Sciences Research 2022年第2期7卷 207-210页

作者： yi ye Yuran An yiwen Yang Hao wu Yuzi Zheng Linchuan Liao West China School of Basic Medical Sciences&Forensic Medicine Sichuan UniversityChengduChina Criminal Technology Department Liupanshui Public Security BureauGuizhouChina

Short tandem repeats on the Y chromosome(Y-STRs),characterized by paternal inheritance,are valuable in forensic ***,the potential application of Y-STRs in pedigrees should be drawn upon,especially in China’s surname-concentrated natural *** study focused on 50 Y-STRs,including 13 rapidly mutating(RM)Y-STRs that largely constitute the current Y-STR commercial kits,and determined the differences in these Y-STRs between branches in a large pedigree and the discriminatory power of these haplotypes in different units for male *** indicated in the results,14 inconsistencies were observed at 9 Y-STRs between 10 father-son *** addition,these 50 Y-STR haplotypes discriminated 10 out of 47 father-son pairs,106 of 148 cousin pairs,70 of 119 uncle-nephew pairs,17 of 39 brother pairs,and 14 out of 33 grandfather-grandson pairs in a large *** RM Y-STR set is able to differentiate close male relatives in a large pedigree.

关键词： Forensic sciences forensic genetics Y-STR haplotype rapid mutation pedigree

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食品4D打印技术在食品工业中的应用进展

食品工业科技 2025年第1期46卷 424-430页

作者：童强肖帅磊毕野吴豪董秀萍大连工业大学机械工程与自动化学院辽宁大连116034 海洋食品加工与安全控制全国重点实验室国家海洋食品工程技术研究中心辽宁省海产品精深加工产业共性技术创新平台大连市中式预制食品技术创新中心辽宁大连116034 大连工业大学食品交叉科学研究院辽宁大连116034

4D打印技术作为在3D打印的基础上增加了“时间”这个维度的新兴打印技术,不仅可以在三维空间内构建复杂结构,还能通过材料的预设形变来实现打印物体的自我组装和形态变化。4D打印技术作为新一代的增材制造技术,因演变过程完全可预测、... 详细信息

4D打印技术作为在3D打印的基础上增加了“时间”这个维度的新兴打印技术,不仅可以在三维空间内构建复杂结构,还能通过材料的预设形变来实现打印物体的自我组装和形态变化。4D打印技术作为新一代的增材制造技术,因演变过程完全可预测、可设计和可控制的特点,其潜力和影响力正在不断扩大。近年来,4D打印技术在现代食品加工领域也得到了广泛的研究和应用,通过4D打印实现食品结构、营养成分、口感等特性的精准控制。本文综述了食品4D打印技术原理、要素及优势,分析了食品4D打印在现代食品加工领域中的应用进展,包括4D打印材料特性、外界刺激等方面,并重点探讨了4D打印智能食品的微观结构控制与口感之间的关系,最后展望了食品4D打印技术发展趋势和挑战,旨在为现代食品加工领域提供参考借鉴。

关键词： 4D打印增材制造食品加工外界刺激微结构控制

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Bimodal Coupling Haptic Perceptron for Accurate Contactless Gesture Perception and Material Identification

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Advanced Fiber Materials 2024年第6期6卷 1874-1886页

作者： Guomin ye Qiang wu yi Chen Xueke Wang Zhimin Xiang Jingyan Duan Yanfen Wan Peng Yang National Centre for International Research on Photoelectric and Energy Materials Yunnan Key Laboratory for Micro/Nano Materials and TechnologyYunnan Key Laboratory of Electromagnetic Materials and DevicesSchool of Materials and EnergyYunnan UniversityKunming 650091People’s Republic of China

A bimodal coupled multifunctional tactile perceptron for contactless gesture recognition and material identification is pro-posed to address the challenges posed by limited functionality,signal interference from multimodal collaborative work,and the high power consumption of traditional tactile *** perceptron integrates a capacitive sensor and a triboelectric sensor symmetrically,employing an energy complementarity strategy to reduce power consumption and implementing symmetrical distribution of two sensors for physical isolation to prevent signal *** capacitive sensor detects external pressure,providing information on material properties such as hardness,softness,and deformation,with a wide linear response range of 0-745.3 *** triboelectric sensor captures the electron affinity of measured ***,by utilising machine learning algorithms,a system for contactless gesture recognition and material identification is *** system demonstrates a remarkable accuracy rate of 98.5%when recognising 5 gestures,and achieves a perfect identi-fication(100%)of 10 different materials aided by incorporating capacitive and triboelectric *** results greatly advance the progress of tactile perceptrons with high integration,low power consumption,and multifunctionality,enhancing their effectiveness and reliability in smart device applications.

关键词： Haptic perceptron Capacitive and triboelectric mechanism Contactless gesture perception Material recognition

Effect of Heat Treatment on the Microstructure of Multiphase NiAl-based Alloy

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Journal of Materials Science & Technology 2008年第2期24卷 245-250页

作者： yi XIE Lanzhang ZHOU Jianting GUO Hengqiang ye Superalloys Division Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China

The alloy Ni-Al26.6-Cr13.4-Co8.1-Ti4.3-W1.3-Mo0.9 （at. pct） was fabricated from superalloy K44 and Al element using vacuum induction and casting technique. Investigations to this alloy reveal that a new phase Cr3Ni2 possessing low melting point and poor ductility is formed, which is distributed as a network along NiAI matrix grain boundaries. Subsequent different solution and aging treatments are carried out and lead to microstructural changes to various extents. Rapid cooling after solution at 1250℃ for 20 h gives rise to macrocracks in the specimen while slow cooling after the same treatment results in the formation of spheric α-Cr solid solution and needle-like Ni3Al phase, which are embedded in NiAl matrix. It is comfirmed that aging treatments initiate lath-shaped Ni3Al phase and pearl-shaped α-Cr phase to precipitate from the NiAl matrix, which own orientation relationships with these precipitates.

关键词： NiAl Intermetallics Microstructure Solution and aging treatments

Comprehensive profiling of lysine acetylome in Staphylococcus aureus

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Science China Chemistry 2014年第5期57卷 732-738页

作者： ZHANG yi wu ZhiXiang WAN XueLian LIU Ping ZHANG JiBao ye Yang ZHAO yingMing TAN MinJia Chemical Proteomics Center & State Key Laboratory of Drug Research Shanghai Institute of Materia MedicaChinese Academy of Sciences Natural Products Chemistry Department & State Key Laboratory of Drug Research Shanghai Instituteof Materia Medica Chinese Academy of Sciences Ben May Department for Cancer Research University of Chicago

The Gram-positive bacterium Staphylococcus aureus(***)is a wide spread common opportunistic pathogen that causes a wide variety of infectious diseases,from benign skin infections to life-threatening diseases such as the methicillin-resistant Staphylococcus aureus(MRSA)*** emerging evidence suggests that lysine acetylation may play critical roles in bacterial physiology,the atlas of acetylome in *** has not been *** comprehensively profile protein lysine acetylation in ***,we used an integrated approach that combined immune affinity peptide enrichment using anti-lysine acetylation antibody,high-pH HPLC fractionation,and HPLC/mass spectrometry *** study led to the identification of 1361 non-redundant acetylation sites on 412 proteins found in a search of *** protein database extracted from the Swiss-Prot *** further performed bioinformatic analysis to characterize this modification,including gene ontology annotation,protein-protein interaction,and domain analysis of the acetylation *** found that the acetylated proteins were enriched in multiple biological pathways,such as ribosomal function and energy *** data provides a rich source for functional studies of lysine acetylation in ***.

关键词： proteomics post-translational modification acetylation Staphylococcus aureus

Soil Respiration in a Subtropical Mangrove Wetland in the Jiulong River Estuary, China

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Pedosphere 2013年第5期23卷 678-685页

作者： JIN Liang LU Chang-yi ye Yong ye Gong-Fu College of the Environment & Ecology Xiamen University Xiamen University Tan Kah Kee College Fujian Institute of Forestry Science

The diurnal and seasonal variations of soil respiration （SR） were studied at a subtropical mangrove wetland in the Jiulong River Estuary from May 2010 to April 2011. SR rates were measured continuously from 08：00 to 06：00 local time （24-h time system） on July 8-9 and October 3-4, 2010; and January 15-16 and April 11-12, 2011. Similar patterns in the diurnal variation of SR were observed on October 2-3 and April 11-12, with the maximum values at 14：00 and the minimum at 00：00. However, the diurnal dynamics of SR on July 8-9, 2010 and January 15-16, 2011 showed different patterns, with the maximum values at 08：00-10：00 on above sampling dates and the minimum at 22：00 on July 8 and at 04：00 on January 16. The daily mean values of SR approximated to the values measured at 08：00. SR fluctuated with distinct seasonal patterns. The seasonal variation was characterized by a mono-peak pattern, with the highest rate （6.18 ~mol CO2 m-2 s-1） in July and the lowest rate （0.36 ~tmol CO2 m-2 s-1） in December. The results showed that the variation of SR in mangrove wetland was mainly controlled by soil temperature, and there was no significant correlation between SR and soil water content. It also implied that the model of SR in mangrove wetland should not only consider the effect of soil temperature, but also incorporate other factors, such as water level, precipitation, microbial activity and photosynthesis, which also could affect SR.

关键词： controlling factors Kandelia candel microbial activity neap tide soil temperature