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Liquid metal-based plant electronic tattoos for in-situ monitoring of plant physiology

Science China(Technological Sciences) 2023年第6期66卷 1617-1628页

作者： QU ChunChun CAO LingXiao LI MaoLin wang xiqing HE ZhiZhu College of Engineering China Agricultural UniversityBeijing 100083China Center for Crop Functional Genomics and Molecular Breeding China Agricultural UniversityBeijing 100083China Sanya Institute of China Agricultural University China Agricultural UniversitySanya 572000China

Flexible plant sensors,as a noninvasive and real-time monitoring method for plant physiology,are becoming crucial for precision ***,integrating flexible devices with plants are challenging due to their fragility and complex *** this study,we introduce a liquid metal-based plant electronic tattoo(LM-PET)that can harmlessly and continuously monitor the loss of water content and plant electrical signals,which are critical parameters for analyzing plant physiological *** LM-PET achieves double-sided conductivity through soluble electrostatic spinning films and transferring technology,effectively addressing the issue of mismatch between the rigid interface of electronic devices and the surface of delicate *** fabricated tattoo electrode can adhere tightly to the leaf surface for a long time and can significantly broaden the scope of moisture monitoring,even in cases of severe wrinkling caused by water *** the optimum operating frequency of 100 kHz,the sensitivity of LM-PET can reach 25.4 kΩ%^(-1).Thus,LM-PETs can record the electrical signals generated when abiotic stresses threaten *** are also significant in providing a deeper understanding of the drought adaptation mechanisms of plants and developing drought-resistant *** offer data-driven crop management and decision-making guidance,which is imperative for advancing precision ***,our findings provide valuable insights into the performance of agricultural inputs and facilitate real-time monitoring of plant growth and development.

关键词： plant flexible electrodes liquid metal impedance plant electrical signal plant phenotype

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Sulfonic acid-functionalized core-shell Fe_(3)O_(4)@carbon microspheres as magnetically recyclable solid acid catalysts

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Chinese Chemical Letters 2021年第6期32卷 2079-2085页

作者： Chenyi Yuan xiqing wang Xuanyu Yang Abdulaziz AAlghamdi Fahad AAlharthi Xiaowei Cheng Yonghui Deng Department of Chemistry State Key Laboratory of Molecular Engineering of PolymersShanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsFudan UniversityShanghai 200433China State Key Lab of Transducer Technology Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China Department of Chemistry College of ScienceKing Saud UniversityPO Box 2455Riyadh 11451Saudi Arabia

Green and recyclable solid acid catalysts are in urgent demand as a substitute for conventional liquid mineral *** this work,a series of novel sulfonic acid-functionalized core-shell Fe_(3)O_(4)@carbon microspheres(Fe_(3)O_(4)@C-SO_(3)H)have been designed and synthesized as an efficient and recyclable heterogeneous acid *** the synthesis,core-shell Fe_(3)O_(4)@RF(resorcinol-formaldehyde)microspheres with tunable shell thickness were achieved by interfacial polymerization on magnetic Fe_(3)O_(4)*** high-temperature carbonization,the microspheres were eventually treated by surface sulfonation,re sulting in Fe_(3)O_(4)@C-x-SO_(3)H(x stands for carbonization temperature)microspheres with abundant surface SO_(3)H *** obtained microspheres possess uniform core-shell structure,partially-graphitized carbon skeletons,superparamagnetic property,high magnetization saturation value of 10.6 emu/g,and rich SO_(3)H *** surface acid amounts can be adju sted in the range of 0.59-1.04 mmol/g via sulfonation treatment of carbon shells with different graphitization *** magnetic Fe_(3)O_(4)@C-x-SO_(3)H microspheres were utilized as a solid acid catalyst for the acetalization reaction between benzaldehyde and ethylene glycol,demonstrating high selectivity(97%)to benzaldehyde ethylene glycol *** importantly,by applying an external magnetic field,the catalysts can be easily separated from the heterogeneous reaction solutions,which later show well preserved catalytic activity even after 9 cycles,revealing good recyclability and high stability.

关键词： Core-shell Fe_(3)O_(4)@carbon Interfacial polymerization Magnetic microspheres Recyclability Solid acid catalyst Sulfonic acid-functionalization

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Ca^(2+)-independent ZmCPK2 is inhibited by Ca^(2+)-dependent ZmCPK17 during drought response in maize

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Journal of Integrative Plant Biology 2024年第7期66卷 1313-1333页

作者： Xiaoying Hu Jinkui Cheng Minmin Lu Tingting Fang Yujuan Zhu Zhen Li xiqing wang Yu wang Yan Guo Shuhua Yang Zhizhong Gong State Key Laboratory of Plant Environmental Resilience Frontiers Science Center for Molecular Design BreedingCenter for Crop Functional Genomics and Molecular BreedingCollege of Biological SciencesChina Agricultural UniversityBeijing 100193China College of Life Sciences Institute of Life Science and Green DevelopmentHebei UniversityBaoding 071002China

Calcium oscillations are induced by different ***-dependent protein kinases(CDPKs/CPKs)are one major group of the plant calcium decoders that are involved in various processes including drought *** CPKs are ***,we identified ZmCPK2 as a negative regulator of drought resistance by screening an overexpression transgenic maize *** found that ZmCPK2 does not bind calcium,and its activity is mainly inhibited during short term abscisic acid(ABA)treatment,and dynamically changed in prolonged ***,ZmCPK2 interacts with and is inhibited by calcium-dependent ZmCPK17,a positive regulator of drought resistance,which is activated by ***17 could prevent the nuclear localization of ZmCPK2 through phosphorylation of ***2 interacts with and phosphorylates and activates ZmYAB15,a negative transcriptional factor for drought *** results suggest that drought stress-induced Ca^(2+)can be decoded directly by ZmCPK17 that inhibits ZmCPK2,thereby promoting plant adaptation to water deficit.

关键词： CDPK drought response phosphorylation stomatal movement transcriptional regulation

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Gas diffusion in catalyst layer of flow cell for CO_(2) electroreduction toward C_(2+) products

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Nano Research 2024年第3期17卷 1101-1106页

作者： xiqing wang Qin Chen Yajiao Zhou Yao Tan Ye wang Hongmei Li Yu Chen Mahmoud Sayed Ramadan A.Geioushy Nageh K.Allam Junwei Fu Yifei Sun Min Liu Hunan Joint International Research Center for Carbon Dioxide Resource Utilization School of Physics and ElectronicsCentral South UniversityChangsha 410083China School of Energy and Power Engineering Beihang UniversityBeijing 100191China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450002China Central Metallurgical Research and Development Institute(CMRDI) P.O.Box 87Helwan 11421CairoEgypt Energy Materials Laboratory School of Sciences and EngineeringThe American University in CairoNew Cairo 11835Egypt Research Center for Advanced Energy and Carbon Neutrality Beihang UniversityBeijing 100191China

The use of gas diffusion electrode(GDE)based flow cell can realize industrial-scale CO_(2) reduction reactions(CO_(2)RRs).Controlling local CO_(2) and CO intermediate diffusion plays a key role in CO_(2)RR toward multi-carbon(C_(2+))*** this work,local CO_(2) and CO intermediate diffusion through the catalyst layer(CL)was investigated for improving CO_(2)RR toward C_(2+)*** gas permeability tests and finite element simulation results indicated CL can balance the CO_(2) gas diffusion and residence time of the CO intermediate,leading to a sufficient CO concentration with a suitable CO_(2)/H_(2)O supply for high C_(2+)*** a result,an excellent selectivity of C_(2+)products~79%at a high current density of 400 mA·cm^(-2) could be obtained on the optimal 500 nm Cu CL(Cu500).This work provides a new insight into the optimization of CO_(2)/H_(2)O supply and local CO concentration by controlling CL for C_(2+)products in CO_(2)RR flow cell.

关键词： gas diffusion electrode CO_(2)reduction Cu mass transfer C_(2)product

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CORRELATION OF ION-CLUSTER STRUCTURE WITH BULK VISCOSITY AND DENSITY OF TiO_2-BEARING MOLTEN SLAG

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Acta Metallurgica Sinica(English Letters) 1992年第11期5卷 334-339页

作者： DIAO Risheng wang xiqing wang Huaiyong ZHANG Rong Iron and Steel Research Institute,Panzhihua Iron and Steel Company,Sichuan,ChinaDU Hegui Northeast University of Technology,Shenyang,China Panzhihua Iron and Steel Co Panzhihua China

An approach was made to correlate the proposed model of ion-cluster structure and structural parameter of TiO_2-bearing pentan system of molten slag with ***- sults showed that an increase of ions with 4-coordination number in molten slag makes the increase of bulk viscosity and the decrease of density,while ions with 6-coordination number are the *** structural parameter proposed is so fairly interrelated to the properties of slag,that it may be available for the prediction about *** comparison with ions of 4-coordination *** is more effective than Al and Si.

关键词： TiO_2 molten slag ion-cluster bulk viscosity density

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Maize yield component analysis with FCN and random forest

Maize yield component analysis with FCN and random forest

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2017全国植物表型组学研讨会

作者： xiqing wang China Agricultural University

Functional genomics and plant breeding programs depend on high quality yield component ***,acquiring high quality yield component data is labor intensive and dependent on the quality of the sample *** yield component analysis is usually ignored or limited to sampling minimal traits only at the time of *** image analysis methods and/or manual method to acquire yield components often lack the precision and accuracy required for robust genetic *** we report a new application of Artificial Intelligence(Al)methodology to yield component analysis in ***,Fully Convolutional Network(FCN) method is used to segment the maize cob region as bareness area,aborted area,disease area,and normal *** the random forest method is used to identify the likelihood of a viable maize kernel and thus accurately and precisely calculate kernel number,kernel row number,and other maize yield *** have compared our Al method with the manual method;95%accuracy and high precision has been reached for most of ear traits including kernel number per ear,ear length,and ear *** optimizing this algorithm the measuring procedure is shortened to 2 second/*** also will report our progress in field phenotyping by drone technology.

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INFRARED DIVERGENT RESPONSE IN ULTRASONIC ABSORPTION IN GeO2 AND B2O3 GLASSES

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声学学报(英文版) 1988年第4期7卷 289-294页

作者：王国梁范希庆 Department of Physics Zhengzhou University Zhengzhou University

In this paper,basing on the theory of the infrared divergent response in ultrasonic absorption inglasses,the condition of existence of the second weaker peak of ultrasonic absorption and the weakerpeak‘s response to... 详细信息

关键词： relaxation ultrasonic glasses divergent tunneling elementary latter fitted besides explain

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厄米-余弦-高斯光束通过像散透镜的焦开关

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中国激光 2008年第10期35卷 1510-1515页

作者：黎淼王莉王喜庆西南交通大学理学院四川成都610031

应用惠更斯-菲涅耳衍射积分公式.研究了厄米-余弦-高斯光束通过像散透镜后的焦开关现象。数值计算结果表明,厄米-余弦-高斯光束通过有像散透镜的光学系统,在像散参数和光束菲涅耳数一定时,改变光学系统几何参数δ(即光束入射面到透镜的... 详细信息

应用惠更斯-菲涅耳衍射积分公式.研究了厄米-余弦-高斯光束通过像散透镜后的焦开关现象。数值计算结果表明,厄米-余弦-高斯光束通过有像散透镜的光学系统,在像散参数和光束菲涅耳数一定时,改变光学系统几何参数δ(即光束入射面到透镜的距离与透镜焦距之比),不仅在δ=1.0时发生通常所说的焦开关现象,而且在δ≠1.0时的其他位置也可以产生焦开关现象,即焦开关现象不仅可以在几何焦点处产生,也可以在几何焦点右侧或左侧产生。讨论了光束参数对焦开关的产生及其位置的影响;分析研究了在给定光束参数和光束菲涅耳数条件下,光学系统几何参数δ取不同值时,厄米-余弦-高斯光束通过像散透镜后的相对焦移随像散参数的变化规律。结果表明,可以通过改变光束参数和像散参数来控制焦开关发生的位置和产生焦开关的次数。

关键词：几何光学焦开关光束传输理论像散厄米余弦高斯光束

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Genetic variation in a heat shock transcription factor modulates cold tolerance in maize

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Molecular Plant 2024年第9期17卷 1423-1438页

作者： Lei Gao Lingling Pan Yiting Shi Rong Zeng Minze Li Zhuoyang Li Xuan Zhang Xiaoming Zhao Xinru Gong Wei Huang Xiaohong Yang Jinsheng Lai Jianru Zuo Zhizhong Gong xiqing wang Weiwei Jin Zhaobin Dong Shuhua Yang State Key Laboratory of Plant Environmental Resilience Frontiers Science Center for Molecular Design BreedingCollege of Biological SciencesCenter for Crop Functional Genomics and Molecular BreedingChina Agricultural UniversityBeijing 100193China State Key Laboratory of Maize Bio-breeding National Maize Improvement CenterFrontiers Science Center for Molecular Design BreedingDepartment of Plant Geneticsand BreedingChinaAgricultural UniversityBeijingChina State Key Laboratory of Plant Genomics and National Plant Gene Research Center Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China

Understanding how maize(Zea mays)responds to cold stress is crucial for facilitating breeding programs of cold-tolerant *** extensive utilization of the genome-wide association study(GWAs)approach for exploring favorable natural alleles associated with maize cold tolerance,few studies have successfully identified candidate genes that contribute to maize cold *** this study,we used a diverse panel of inbred maize lines collected from different germplasm sources to perform a GWAS on var-iations in the relative injured area of maize true leaves during cold stress-a trait very closely correlated with maize cold *** identified HsF21,which encodes a B-class heat shock transcription factor(HSF)that positively regulates cold tolerance at both the seedling and germination *** varia-tions in the promoter of the cold-tolerant HSF21Hap1 allele led to increased HSF21 expression under cold stress by inhibiting binding of the basic leucine zipper bziP68 transcription factor,a negative regulator of cold *** integrating transcriptome deep sequencing,DNA affinity purification sequencing,and targeted lipidomic analysis,we revealed the function of HsF21 in regulating lipid metabolism homeo-stasis to modulate cold tolerance in *** addition,we found that HsF21 confers maize cold tolerance without incurring yield ***,this study establishes HsF21 as a key regulator that en-hances cold tolerance in maize,providing valuable genetic resources for breeding of cold-tolerant maize varieties.

关键词： heat shock factor HSF21 cold tolerance natural variation bZiP68 lipid metabolism maize

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纯氧曝气(UNOX)系统在造纸废水处理中的应用

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给水排水 2010年第11期36卷 68-70页

作者：顾雪锋王锡清上海市政工程设计研究总院上海200092

纯氧曝气(UNOX)系统在日本、韩国等地区的造纸废水处理中应用较为广泛。针对造纸废水常出现污泥膨胀、曝气管堵塞等问题,UNOX系统具有氧利用效率高、容积负荷高、剩余污泥产量低等优势。在江苏王子造纸有限公司生产废水处理中,选用UNOX... 详细信息

纯氧曝气(UNOX)系统在日本、韩国等地区的造纸废水处理中应用较为广泛。针对造纸废水常出现污泥膨胀、曝气管堵塞等问题,UNOX系统具有氧利用效率高、容积负荷高、剩余污泥产量低等优势。在江苏王子造纸有限公司生产废水处理中,选用UNOX系统作为废水处理的核心工艺,介绍了UNOX系统的控制方式、工艺特点及处理效果。

关键词：造纸废水 UNOX系统纯氧曝气

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