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SSRN 2024年

作者： Liu, Shuyu Wu, Zitong Min, Xin Nian, Nijuan Liu, Hong Zhang, Pei School of Environment and Chemical Engineering Shanghai University Shanghai201800 China Shanghai Zhixi Technology Co. Ltd Shanghai201815 China Shaanxi Key Laboratory of Environmental Monitoring and Forewarning of Trace Pollutants ShaanXi Xi'An710054 China

A nano-detection method was developed to qualitatively detect heavy metal Pb and MC-LR in algal cell-water environments. The study utilized aptamer-modified gold nanorods as sensitive materials in high-concentration sodium chloride solution. The binding groups of aptamers and MC-LR-Pb2+ were found to conflict with the binding groups of MC-LR and Pb2+. Copper ions showed enhanced signals within 72 hours, forming intracellular complexes. After 72 hours, the complexes migrated to the aqueous environment, leading to enhanced signals of extracellular complexes. The optimized modified gold nanorod system successfully detected intracellular MC-LR and its complexes during the early and middle stages of exposure. At higher concentrations, MC-LR and its complexes were found outside the cells during the later stage of exposure, accelerating the migration of MC-LR from algae cells to the water environment. © 2024, The Authors. All rights reserved.

关键词： Lead compounds

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Effect of Adding Microwave Absorber on Structures and Properties of Hypercoal-Based Activated Carbons

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Journal of Wuhan University of technology(Materials Science) 2020年第3期35卷 488-494页

作者： XU Lijun FAN Lihua HOU Caixia LIU Junke SUN Zhang College of Chemical Engineering North China University of Science and TechnologyTangshan 063210China Hebei Province Key Laboratory of Photocatalytic and Electrocatalytic Materials for Environment Tangshan 063210China

Using lignite-based hypercoal as raw material, KOH as activator and CuO as microwave absorber, we prepared hypercoal-based activated carbons by microwave-assisted activation. The pore structure and the electrochemical performance of the activated carbons were tested, and the effects of adding CuO in the activation reaction process were also investigated. The activated carbons prepared were characterized by nitrogen adsorption-desorption, X-ray diffraction (XRD) and scanning electron microscopy (SEM). The specific surface area and mesoporous ratio of the hypercoal-based activated carbon are 1257 m2/g and 55.4%, respectively. When the activated carbons are used as the electrode materials, the specific capacitance reaches 309 F/g in 3 M KOH electrolyte. In comparison with those prepared without CuO absorber, the specific capacitance increases by 11.6%. It was proved that the addition of microwave absorber in microwave-assisted activation was a low-cost method for rapidly preparing activated carbon, and it could effectively promote the development of the pore structure and improve its electrochemical performance.

关键词： hypercoal activated carbon microwave absorber pore structure electrochemical performance

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SAW Pressure Sensor Based on Diaphragm-Pirani Composite Sensing Mechanism: For Cross-Scale Measurement Range Extension

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IEEE Sensors Journal 2025年

作者： Chen, Aobei Li, Dapeng Gao, Ge Na, Rui Zheng, Dezhi Beihang University School of Instrumentation and Optoelectronic Engineering Beijing100191 China Beijing Institute of Technology State Key Laboratory of Environment Characteristics and Effects for Near-space School of Optics and Photonics Beijing100081 China Beijing Institute of Technology Advanced Research Institute of Multidisciplinary Sciences Beijing100081 China

Surface Acoustic Wave (SAW) pressure sensors are widely applied for their strong environmental adaptability, ease of wireless integration, and low cost. With the extension of atmospheric observation into near-space environments, there is a growing demand for cross-scale pressure measurements ranging from Pa to hundreds of kPa. However, conventional SAW pressure sensors based on a single sensing mechanism face limitations in meeting this demand. Integrating diaphragm-type and Pirani-type sensing mechanisms offers a promising approach, yet balancing their sensitivities across pressure ranges remains challenging due to conflicting temperature coefficient of frequency (TCF) requirements. To address this issue, this study proposes a SAW pressure sensor based on a composite Diaphragm- Pirani sensing mechanism, incorporating a differential decoupling structure and suspended packaging to enable high sensitivity across the pressure scales. Based on the established composite sensing model, the sensor was designed, fabricated, and evaluated using a pressure–temperature integrated test system. Experimental results demonstrate that the sensor achieves sensitivities of 21.03 ppm/Pa (10–100 Pa), 1.01 ppm/Pa (100 Pa–1 kPa), and 3.17 ppm/kPa (1–200 kPa), effectively addressing the limitations of existing technologies in cross-scale pressure sensing. Furthermore, an adaptive range-switching strategy was implemented to enable smooth transition between different measurement modes. © 2001-2012 IEEE.

关键词： composite sensitive mechanism cross-scale pressure sensor range extension surface acoustic wave (SAW)

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Satellite precipitation product:Applicability and accuracy evaluation in diverse region

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Science China(Technological Sciences) 2020年第5期63卷 819-828页

作者： MUHAMMAD Ehtsham MUHAMMAD Waseem AHMAD Ijaz MUHAMMAD KHAN Noor CHEN Si Centre of Excellence in Water Resources Engineering University of Engineering and TechnologyLahore 54890Pakistan Department of Civil Engineering University of Engineering and TechnologyLahore 54890Pakistan School of Resources and Environment Hubei UniversityWuhan 430062China Hubei Key Laboratory of Regional Development and Environmental Response Wuhan 430062China

Satellite precipitation products,e.g.,Tropical Rainfall Measuring Mission version-07(hereafter TRMM)and its successor Integrated Multi-Satellite Retrievals for Global Precipitation Measurement(hereafter IMERG)are being used at a global scale for rainfall ***,SM2RAIN-ASCAT(hereafter SM2RAIN)is a novel addition to satellite-based precipitation products which gives the rainfall estimates from the knowledge of soil moisture state and is based on‘bottom to top’approach.A comparative assessment of any newly developed product or a new version of the product is quite vital for algorithm developers and ***,this research work was carried out to evaluate the accuracy and applicability of SM2RAIN,in comparison to in-situ data,TRMM,and IMERG in diverse regions of *** comparative analysis was performed on a temporal scale(daily and monthly)and seasonal scale(spring,autumn,summer,and winter)using five performance metrics namely,root mean square error(RMSE),correlation coefficient(CC),false alarm ratio(FAR),the probability of detection(POD),and critical success index(CSI).The results showed that:(1)SM2RAIN is a better rainfall estimation product in the dry region(having ***>0.35),however,less effective in hilly and mountainous terrain having high rainfall intensity;(2)SM2RAIN provides more satisfactory estimates in winter and autumn seasons,while relative poor in the summer season;(3)SM2RAIN performs better in terms of rainfall detection with an average POD of 0.61;(4)the overall performance of SM2RAIN is very convincing and it was concluded that SM2RAIN can be a feasible satellite product for most of the areas of *** is noteworthy here to mention that this could be the preliminary assessment of SM2RAIN in diverse climatic zones of Pakistan.

关键词： SM2RAIN satellite product TRMM,IMERG Pakistan

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AcMYB266,a key regulator of the red coloration in pineapple peel:a case of subfunctionalization in tandem duplicated genes

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园艺研究（英文） 2024年第6期11卷 245-255页

作者： Wei Zhang Jing Wu Junhu He Chaoyang Liu Wen Yi Jingyao Xie Ya Wu Tao Xie Jun Ma Ziqin Zhong Mingzhe Yang Chengjie Chen Aiping Luan Yehua He Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crop in South China Ministry of Agriculture and Rural AreasCollege of HorticultureSouth China Agricultural UniversityNo.483Wushan RoadWushan StreetTianhe DistrictGuangzhouGuangdong510642China Tropical Crops Genetic Resources Institute Chinese Academy of Tropical Agricultural Sciences/National Key Laboratory for Tropical Crop BreedingYazhouwan Technology CitySanyaHainan572024China/Laboratory of Crop Gene Resources and Germplasm Enhancement in Southern ChinaMinistry of Agriculture and Rual Affairs/Key Laboratory of Tropical Crops Germplasm Resources Genetic Improvement and Innovation of Hainan ProvinceNo.4Xueyuan RoadLonghua DistrictHaikouHainan571101China School of Landscape Architecture Guangdong Eco-Engineering PolytechnicNo.297Guangshan 1st RoadTianhe DistrictGuangzhouGuangdong510520China Environment and plant protection institute Chinese Academy of Tropical Agricultural SciencesNo.4Xueyuan RoadLonghua DistrictHaikouHainan571101China Department of Horticulture Foshan UniversityNo.18Jiangwan 1st RoadChancheng DistrictFoshanGuangdong528231China College of Landscape Architecture Sichuan Agricultural UniversityNo.211Huimin RoadWenjiang DistrictChengduSichuan610000China

Red fruit peel is an attractive target for pineapple *** pineapple accessions with distinct red coloration patterns exist;however,the precise molecular mechanism accounting for these differences remains unknown,which hinders the pineapple breeding process from combining high fruit quality with red *** this study,we characterized a transcription factor,AcMYB266,which is preferentially expressed in pineapple peel and positively regulates anthocyanin *** pineapple,Arabidopsis,and tobacco plants overexpressing AcMYB266 exhibited significant anthocyanin ***,transient silencing of this gene led to decreased anthocyanin accumulation in pineapple red ***-depth analysis indicated that variations of AcMYB266 sequences in the promoter instead of the protein-coding region seem to contribute to different red coloration patterns in peels of three representative pineapple *** addition,we found that AcMYB266 was located in a cluster of four MYB genes exclusive to and conserved in Ananas *** this cluster,each was proved to regulate anthocyanin synthesis in different pineapple tissues,illustrating an interesting case of gene subfunctionalization after tandem *** summary,we have characterized AcMYB266as a key regulator of pineapple red fruit peel and identified an MYB cluster whose members were subfunctionalized to specifically regulate the red coloration of different pineapple *** present study will assist in establishing a theoretical mechanism for pineapple breeding for red fruit peel and provide an interesting case for the investigation of gene subfunctionalization in plants.

关键词： tandem case genes acmyb266 coloration duplicated functional peel pineapple regulator

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Unexpected Trade-Offs of Fossil Fuel Reduction on PM2.5and O3Pollution Regulation Can Be Offset by Synergistic Control of VOCs Source

ACS ES&T Air

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ACS ES&T Air 2024年第7期1卷 660-669页

作者： Guoliang Shi Haofei Yu Jie Li Zhang Zhang Feng Wang Junbo Huang Yue Li Yulong Yan Yinchang Feng Armistead G. Russell State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control Tianjin Key Laboratory of Urban Transport Emission Research College of Environmental Science and Engineering Nankai University Tianjin 300350 People’s Republic of China China Meteorological Administration-Nankai University (CMA-NKU) Cooperative Laboratory for Atmospheric Environment-Health Research College of Environmental Science and Engineering Nankai University Tianjin 300350 China Department of Civil Environmental and Construction Engineering University of Central Florida Orlando Florida 32816 United States School of Environmental Science and Safety Engineering Tianjin University of Technology Tianjin 300384 China College of Computer Science Nankai University Tianjin 300350 China School of Environment Beijing Jiaotong University Beijing 100044 China School of Civil and Environmental Engineering Georgia Institute of Technology Atlanta Georgia 30332-0512 United States

Particulate matter (PM2.5) and ozone (O3) are typical air pollutants that require effective simultaneous control. Current PM2.5and O3co-mitigation strategies are primarily focused on the emission optimization of nitrogen oxides (NOx) and volatile organic compounds (VOCs); however, fundamental mechanisms underlying these co-mitigation efforts remain largely unanswered. Here, utilizing an atmospheric chemistry model combined with machine learning technique, we extend the scope of coordinated control efforts beyond just precursors by identifying and controlling common sources of PM2.5and O3, which are fossil fuel combustion sources including coal combustion, industrial emission, and vehicle exhausts. We conducted further sensitivity simulations and found that reducing fossil fuel combustion emissions significantly lowers PM2.5levels but has trade-off effects on O3control, which is attributable to the suppressed aerosol sink of hydroperoxyl radicals and the enhanced atmospheric oxidizing capacity. Furthermore, this unexpected enhancement of O3can be offset by synergistically controlling certain other specific VOCs sources. For example, during days with high levels of both PM2.5and O3pollution, a 40% reduction of VOCs sources at the corresponding level of coal combustion reduction is predicted to lead to an ∼13 ppb (∼14%) reduction in O3concentration. Our results provide the scientific evidence and theoretical framework for mitigating PM2.5and O3pollution through joint control of fossil fuel combustion sources and specific VOCs sources.

关键词： environmental pollution Fossil fuels Particulate matter Redox reactions Volatile organic compounds

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Multi-omics analyses of 398 foxtail millet accessions reveal genomic regions associated with domestication,metabolite traits,and antiinflammatory effects

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Molecular Plant 2022年第8期15卷 1367-1383页

作者： Xukai Li Jianhua Gao Jingyi Song Kai Guo Siyu Hou Xingchun Wang Qiang He Yanyan Zhang Yakun Zhang Yulu Yang Jiaoyan Tang Hailang Wang Staffan Persson Mingquan Huang Lishuai Xu Linlin Zhong Dongqin Li Yongming Liu Hua Wu Xianmin Diao Peng Chen Xiaowen Wang Yuanhuai Han Shanxi Key Laboratory of Minor Crop Germplasm Innovation and Molecular Breeding College of Life SciencesShanxi Agricultural UniversityTaiguChina Key Laboratory of Brewing Molecular Engineering of China Light Industry Beijing Technology and Business UniversityBeijingChina Department of Neurology University of MichiganAnn ArborMIUSA Shanxi Key Laboratory of Minor Crop Germplasm Innovation and Molecular Breeding College of AgricultureShanxi Agricultural UniversityTaiguChina Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijingChina Colllege of Plant Science and Technology Huazhong Agricultural UniversityWuhanChina Copenhagen Plant Science Centre Department of Plant&Environmental SciencesUniversity of CopenhagenFrederiksberg CDenmark Joint International Research Laboratory of Metabolic and Developmental Sciences School of Life Sciences and BiotechnologyShanghai Jiao Tong UniversityMinhangShanghai 200240China College of Resources and Environment Shanxi Agricultural UniversityTaiguChina College of Horticulture and Forestry Sciences Huazhong Agricultural UniversityWuhanChina National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural UniversityWuhanChina Grandomics Biosciences Company Limited BeijingChina College of Food Science and Engineering Shanxi Agricultural UniversityTaiguChina

Foxtail millet(Setaria italica),which was domesticatedfromthewild speciesgreenfoxtail(Setaria viridis),isa richsource of phytonutrientsfor *** evaluate how breeding changed themetabolome offoxtail millet grains,we generated and analyzed the datasets encompassing the genomes,transcriptomes,metabolomes,and anti-inflammatory indices from 398 foxtail millet *** identified hundreds of common variants that influence numerous secondary *** observed tremendous differences in natural variations of the metabolites and their underlying genetic architectures between distinct sub-groups of foxtail ***,we found that the selection of the gene alleles associated with yellow grains led to altered profiles of metabolites such as carotenoids and endogenous *** CRiSPR-mediated genome editing wevalidated the function of PHYTOENE SYNTHASE1(PSY1)gene in affecting milletgrain colorand ***,our in vitro cell inflammation assays showed that 83 metabolites in millet grains have anti-inflammatory *** together,ourmulti-omics study illustrates how the breeding history of foxtail millet has shaped its metabolite *** datasets we generated in this study also provide important resources for further understanding how millet grain quality is affected by different metabolites,laying the foundations for future millet genetic research and metabolome-assisted improvement.

关键词： foxtail millet multi-omics,genetic association metabolome transcriptome anti-inflammatory effects

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Selective Capture of Palladium by Protonation-Armed Pyridine Nitrogen in Extreme Water environments

SSRN

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SSRN 2023年

作者： Li, Dewei Shao, Penghui Li, Min Liu, Wenjin Yao, Ziwei Zhang, Li Meng, Zhu Yang, Liming Shi, Hui Tang, Huan Luo, Xubiao Luo, Shenglian National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization Nanchang Hangkong University Nanchang330063 China Key Laboratory of Northwest Water Resource Environment and Ecology MOE and Shaanxi Key Laboratory of Environmental Engineering Xi’an University of Architecture and Technology Xi’an710055 China Department of Chemical Engineering Chongqing University of Science and Technology Chongqing401331 China

Due to the hostile environment in which it is recovered, selective separation of palladium from the leachate of spent catalysts containing palladium is of considerable utility but faces substantial obstacles. This work designed and synthesized a bipyridine-based porous organic polymer (POP-BPy). Meanwhile, its adsorption characteristics and the mechanism of adsorption were examined. In hostile conditions, the resultant POP-BPy display exceptional mechanical stability and environmental resistance. Impressively, POP-BPy has an excellent adsorption capacity of Pd(II) (248 mg/g) in harsh environments (AR"1+1"), and had superior selectivity and rapid kinetics. The selectivity of POP-BPy for Pd(II) was verified in combination with relevant experiments (βPd(II)/Pt(II)=36.19, βPd(II)/Pt(II)=23.90). Furthermore, combining density functional theory and molecular dynamics simulations, the mechanism of selectivity of POP-BPy for Pd(II) was revealed from static adsorption sites to dynamic adsorption processes, which attributed to the strong attraction of protonated pyridine nitrogen to PdCl42- and site suitability. Furthermore, the application of POP-BPy to spent catalyst recovery resulted in up to 100% removal of Pd(II) from the actual leaching solution, and fixed bed column experiments can effectively treat 2688 bed volumes of feed streams. Overall, this work has opened up new avenues for the selective recycling of valuable metals in harsh environments. © 2023, The Authors. All rights reserved.

关键词： Mechanical stability

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Efficient Region-Aware Neural Radiance Fields for High-Fidelity Talking Portrait Synthesis

Efficient Region-Aware Neural Radiance Fields for High-Fidel...

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International Conference on Computer Vision (ICCV)

作者： Jiahe Li Jiawei Zhang Xiao Bai Jun Zhou Lin Gu School of Computer Science and Engineering State Key Laboratory of Software Development Environment Jiangxi Research Institute Beihang University School of Information and Communication Technology Griffith University RIKEN AIP The University of Tokyo

This paper presents ER-NeRF, a novel conditional Neural Radiance Fields (NeRF) based architecture for talking portrait synthesis that can concurrently achieve fast convergence, real-time rendering, and state-of-the-art performance with small model size. Our idea is to explicitly exploit the unequal contribution of spatial regions to guide talking portrait modeling. Specifically, to improve the accuracy of dynamic head reconstruction, a compact and expressive NeRF-based Tri-Plane Hash Representation is introduced by pruning empty spatial regions with three planar hash encoders. For speech audio, we propose a Region Attention Module to generate region-aware condition feature via an attention mechanism. Different from existing methods that utilize an MLP-based encoder to learn the cross-modal relation implicitly, the attention mechanism builds an explicit connection between audio features and spatial regions to capture the priors of local motions. Moreover, a direct and fast Adaptive Pose Encoding is introduced to optimize the head-torso separation problem by mapping the complex transformation of the head pose into spatial coordinates. Extensive experiments demonstrate that our method renders better high-fidelity and audio-lips synchronized talking portrait videos, with realistic details and high efficiency compared to previous methods. Code is available at https://***/Fictionarry/ER-NeRF.

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Multiple effects of nitrate amendment on the transport, transformation and bioavailability of antimony in a paddy soil-rice plant system

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Journal of environmental Sciences 2021年第2期33卷 90-98页

作者： Xiaofeng Zhang Tongxu Liu Fangbai Li Xiaomin Li Yanhong Du Huanyun Yu Xiangqin Wang Chuanpin Liu MiFeng Bing Liao Guangzhou Institute of Geochemistry Chinese Academy of SciencesGuangzhou 510640China Guangdong Key Laboratory of Ilntegrated Agro-environmental Pollution Control and Management GuangdongInstitute of Eco-environmental Science&TechnologyGuangzhou 510650China National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China Guangzhou 510650China University of Chinese Academy of Sciences Beijing 100049China SCNU Enuironmental Research Institute Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety&MOE Key Laboratory of Theoretical Chemistry of EnvironmentSouth China NormalUniversityGuangzhou 510006China

Nitrate(NO3^(-))is known to be actively involved in the processes of mineralization and heavy metal transformation;however,it is unclear whether and how it affects the bioavailability of antimony(Sb)in paddy soils and subsequent Sb accumulation in ***,the effects of NO3^(-)on Sb transformation in soil-rice system were investigated with pot experiments over the entire growth *** demonstrated that NO3^(-)reduced Sb accumulation in brown rice by 15.6%compared to that in the *** amendment with NO3^(-),the Sb content in rice plants increased initially and then gradually decreased(in roots by 46.1%).During the first 15 days,the soil p H increased,the oxidation of Sb(Ⅲ)and sulfides was promoted,but the reduction of iron oxide minerals was inhibited,resulting in the release of adsorbed and organic-bound Sb from *** microbial arsenite-oxidizing marker gene aox B played an important role in Sb(Ⅲ)*** days 15 to 45,after NO3^(-)was partially consumed,the soil p H decreased,and the reductive dissolution of Fe(Ⅲ)-bearing minerals was enhanced;consequently,iron oxide-bound Sb was transformed into adsorbed and dissolved Sb *** day 45,NO3^(-)was completely reduced,Sb(V)was evidently reduced to Sb(Ⅲ),and green rust was generated ***,the available Sb decreased due to its enhanced affinity for iron ***,NO3^(-)inhibited the reductive dissolution of iron minerals,which ultimately caused low Sb ***,NO3^(-)can chemically and biologically reduce the Sb availability in paddy soils and alleviate Sb accumulation *** study provides a potential strategy for decreasing Sb accumulation in rice in the Sb-contaminated sites.

关键词： Antimony Nitrate Microbial Sb(Ⅲ)oxidation Rice Paddy soil

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