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Experimental Investigation on Solution Regeneration Performance and Coefficients in Full-Open System for Heat and Water Recovery of Flue Gas

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Journal of Thermal Science 2024年第3期33卷 1094-1108页

作者： WEI Hongyang HUANG Shifang ma yuxin CHEN Bo SUN Li zhang Xiaosong School of Energy and Environment Southeast UniversityNanjing210096China MOE Engineering Research Center for Building Energy Equipment&Environment Southeast UniversityNanjing210096China Jiangsu Frontier Electric Technology Co. LtdNanjing211106China

The recovery of heat and water from low-grade flue gas is of considerable importance for energy conservation and environmental *** the full-open absorption heat pump shows promise as a means of achieving heat and water recovery,the lack of research on heat and mass transfer performance of open-type solution evaporation regeneration represents a significant impediment to its design and *** paper experimentally investigates the regeneration performance of an open-type spaying tower equipped with ceramic structured *** different regeneration modes are proposed,namely ambient air receiver mode and flue gas receiver mode,to utilize air or low-grade flue gas as a driving *** impact of different input parameters on the regeneration characteristics,including heat transfer capacity,water removal rate,thermal efficiency,and humidity effectiveness,are *** findings indicate that the enhancement of regeneration can be achieved through the increase of solution flow rate,solution temperature,and flue gas flow rate in both regeneration ***,high solution concentration and flue gas humidity ratio can weaken water removal rates and reduce thermal *** the regeneration of CaCl_(2)-H_(2)O with a concentration of55%,flue gas around 200℃with a humidity ratio below 44 g/kg can successfully drive the solution regeneration *** the solution concentration or flue gas humidity ratio continues to rise,additional energy is necessary for ***,the coupled heat and mass transfer coefficients are fitted,which can contribute to the design and optimization of the open-type regenerator.

关键词： heat and water recovery solution regeneration flue gas regeneration performance coefficient

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Global Research Progress on Municipal Waste and Future Prospect Based on the Cross-national Comparisons

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Chinese Geographical Science 2024年第2期34卷 250-264页

作者： zhang yuxin LIU Xiaoqian YAN Xiaoxia ma Sike maO Weiyun College of Applied Arts and Science of Beijing Union University Beijing 100191China

Due to the acceleration of urbanization,the municipal waste(MW)problem has transformed into a global challenge for urb-an *** elucidate historical trends,current focal points,and future directions in MW research,we conducted a bibliometric analysis and employed knowledge graph visualization to scrutinize a total of 34212 articles,which were published between 1991 and 2021 in the Web of Science(WoS)core *** results indicated that current major research themes encompass waste classifica-tion and recycling,waste management and public behavior,waste disposal methods and technologies,as well as environmental impact and *** has been a shift in the research focus from the environmental impacts of waste incineration to sustainable manage-ment related issues.A comparison of research from six typical countries revealed the differences in research priorities and techniques *** from the USA and Britain initiated MW research earlier than other countries and investigated management issues in depth,such as public behavior and willingness to ***,Japanese,German,and Swedish scholars conducted extensive studies on advanced waste treatment technologies,such as disposal and recycling,risk assessment,and waste-to-energy *** scholars placed particular emphasis on end-of-pipe treatments and their associated environmental *** and poten-tial future frontiers were identified by burst detection *** with high value of burst index(BI)worldwide are food waste and circular *** scholars have put great efforts on waste environmental impact and its recycling technologies,while we’re expecting to further investigating vulnerable ***,this study contributes to bridging the regional gap of scientific research among different countries and fostering international collaboration.

关键词： bibliometrics municipal waste(MW) CiteSpace hotspot prediction burst index(BI) sustainability cross-national comparison Web of Science(WoS)

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Antisense expression of Gossypium barbadense UGD6 in Arabidopsis thaliana significantly alters cell wall composition

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Science China(Life Sciences) 2016年第2期59卷 213-218页

作者： Jie Han yuxin Pan Xingfen Wang Yan zhang Zhiying ma North China Key Laboratory for Germplasm Resources of Education Ministry Key Laboratory of Crop Germplasm Resources of Hebei Agricultural University of Hebei Baoding 071001 China North China University Science and Technology Tangshan 063009 China

Uridine diphosphate-glucose dehydrogenase （UGD, EC1.1.1 glucuronate）, a critical precursor of cell wall polysaccharides 22 oxidizes UDP-Glc （UDP-D-glucose） to UDP-GlcA （UDP-D- GbUGD6 from Gossypium barbadense is more highly expressed late in the elongation of cotton fibers （15 d post-anthesis （DPA）） and during the stage of secondary cell wall thickening （30 DPA）. Subcellular localization analysis in onion epidermis revealed that fluorescently labeled GbUGD6 protein was distribut- ed throughout the cell membrane, as well as the nucleus and vacuoles. Examination of UGD function in Arabidopsis revealed that the antisense GbUGD6 lines had shorter roots, deferred blossoming, compared to wild-type plants. Activities of associated enzymes were also affected by UGD reduction, and biochemical analysis of cell wall samples showed an increase in cellulose levels and a decrease in UGP-GlcA contents. The results of the present study as well as previous studies on UGD support the conclusion that UGD plays a major role in synthesizing polysaccharides synthesis in the cell wall.

关键词： UDP-glucose dehydrogenase UDP-GIcA Gossypium fiber

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A survey of network anomaly visualization

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Science China(Information Sciences) 2017年第12期60卷 126-142页

作者： Tianye zhang Xumeng WANG Zongzhuang LI Fangzhou GUO yuxin ma Wei CHEN State Key Laboratory of CAD & CG Zhejiang University

Network anomaly analysis is an emerging subtopic of network security. Network anomaly refers to the unusual behavior of network devices or suspicious network status. A number of intelligent visual tools are developed to enhance the ability of network security analysts in understanding the original data, ultimately solving network security problems. This paper surveys current progress and trends in network anomaly visualization. By providing an overview of network anomaly data, visualization tasks, and applications, we further elaborate on existing methods to depict various data features of network alerts, anomalous traffic, and attack patterns data. Directions for future studies are outlined at the end of this paper.

关键词： network anomaly network anomaly visualization visual analysis network security visualization

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Multi?targeted Antisense Oligonucleotide Delivery by a Framework Nucleic Acid for Inhibiting Biofilm Formation and Virulence

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Nano-Micro Letters 2020年第6期12卷 113-125页

作者： yuxin zhang Xueping Xie Wenjuan ma Yuxi Zhan Chenchen mao Xiaoru Shao Yunfeng Lin State Key Laboratory of Oral Diseases National Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengdu 610041People’s Republic of China

Biofilm formation is responsible for numerous chronic infections and represents a serious health *** and the extracellular polysaccharides(EPS)cause biofilms to become adherent,toxic,resistant to antibiotics,and ultimately difficult to *** of EPS synthesis can prevent the formation of bacterial biofilms,reduce their robustness,and promote ***,we have developed a framework nucleic acid delivery system with a tetrahedral *** can easily access bacterial cells and functions by delivering antisense oligonucleotides that target specific *** designed antisense oligonucleotide sequences with multiple targets based on conserved regions of the VicK protein-binding *** delivered to bacterial cells,they significantly decreased EPS synthesis and biofilm *** to existing approaches,this system is highly efficacious because it simultaneously reduces the expression of all targeted genes(gtfBCD,gbpB,ftf).We demonstrate a novel nucleic acid-based nanomaterial with multi-targeted inhibition that has great potential for the treatment of chronic infections caused by biofilms.

关键词： Biofilm Framework nucleic acid Multi-targeting Antisense oligonucleotide Delivery system

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On Klein tunneling of low-frequency elastic waves in hexagonal topological plates

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Applied mathematics and Mechanics(English Edition) 2024年第7期45卷 1139-1154页

作者： yuxin YAO Yuansheng ma Fang HONG Kai zhang Tingting WANG Haijun PENG Zichen DENG School of Mechanics Civil Engineering and ArchitectureNorthwestern Polytechnical UniversityXi’an710072China MIIT Key Laboratory of Dynamics and Control of Complex Systems Northwestern Polytechnical UniversityXi’an710072China State Key Laboratory of Structural Analysis for Industrial Equipment Dalian University of TechnologyDalian116024Liaoning ProvinceChina

Incident particles in the Klein tunnel phenomenon in quantum mechanics can pass a very high potential *** the concept of tunneling into the analysis of phononic crystals can broaden the application *** this study,the structure of the unit cell is designed,and the low frequency(mation processing and vibration control,and potential applications in other directions are also worth exploring.

关键词： topological metamaterial elastic wave Klein tunneling valley-locked waveguide

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The biological applications of DNA nanomaterials:current challenges and future directions

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Signal Transduction and Targeted Therapy 2021年第11期6卷 3202-3229页

作者： Wenjuan ma Yuxi Zhan yuxin zhang Chenchen mao Xueping Xie Yunfeng Lin State Key Laboratory of Oral Diseases National Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengduPeople’s Republic of China College of Biomedical Engineering Sichuan UniversityChengduPeople’s Republic of China

DNA,a genetic material,has been employed in different scientific directions for various biological applications as driven by DNA nanotechnology in the past decades,including tissue regeneration,disease prevention,inflammation inhibition,bioimaging,biosensing,diagnosis,antitumor drug delivery,and *** the rapid progress in DNA nanotechnology,multitudinous DNA nanomaterials have been designed with different shape and size based on the classic Watson–Crick base-pairing for molecular *** DNA materials could functionally change cell biological behaviors,such as cell migration,cell proliferation,cell differentiation,autophagy,and anti-inflammatory *** single-stranded DNAs(ssDNAs)or RNAs with secondary structures via self-pairing,named aptamer,possess the ability of targeting,which are selected by systematic evolution of ligands by exponential enrichment(SELEX)and applied for tumor targeted diagnosis and *** DNA nanomaterials with three-dimensional(3D)nanostructures and stable structures are investigated as drug carrier systems to delivery multiple antitumor medicine or gene therapeutic *** the functional DNA nanostructures have promoted the development of the DNA nanotechnology with innovative designs and preparation strategies,and also proved with great potential in the biological and medical use,there is still a long way to go for the eventual application of DNA materials in real *** in this review,we conducted a comprehensive survey of the structural development history of various DNA nanomaterials,introduced the principles of different DNA nanomaterials,summarized their biological applications in different fields,and discussed the current challenges and further directions that could help to achieve their applications in the future.

关键词： diagnosis prevention pairing

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cDNA-AFLP profiling for the fiber development stage of secondary cell wall synthesis and transcriptome mapping in cotton

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Chinese Science Bulletin 2007年第17期52卷 2358-2364页

作者： PAN yuxin ma Jun zhang GuiYin HAN GaiYing WANG XingFent ma ZhiYingt Key Laboratory of Crop Germplasm Resources of Hebei Province Agricultural University of Hebei Baoding 071001 China

Cotton fiber strength is mainly determined during the secondary cell wall deposition stage when cel- lulose is synthesized. We obtained cDNA of 20―25 d post anthesis (DPA) fiber from 109 F2 progeny and developed a cotton fiber transcriptome profiling via cDNA-AFLP technology using 37 different primer combinations. The F2 population originated from an interspecific cross between Gossypium hirsutum and Gossypium barbadense. One hundred and thirty-eight absence/presence polymorphic transcript- derived fragments (TDFs), with sizes ranging from 100 bp to 722 bp, were screened. Of these, 75 (53.62%) were polymorphic between the parents of the F2 population. Sequencing the 75 transcripts revealed that 37 of them had been reported to be cotton fiber ESTs. Nine of 75 transcript sequences were homologous to 7 cloned cotton fiber genes, encoding cysteine proteinase, vacuolar H+-pyro- phosphatase, vacuolar H+-ATPase, catalytic subunit, arabinogalactan protein, putative receptor protein kinase PERK1, GIA/RGA-like gibberellin response modulator and cellulose synthase. Some other transcripts may represent new gene fragments in cotton fiber development. Surprisingly, 46 of the 75 transcripts were mapped to a single linkage group. The transcriptome groups and the sequenced TDFs could serve as important resources in the functional genomic research of cotton fiber development.

关键词：棉花 cDNA-AFLP 基因转录纤维生长细胞壁

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Contrasting elevational diversity patterns for soil bacteria between two ecosystems divided by the treeline

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Science China(Life Sciences) 2016年第11期59卷 1177-1186页

作者： Guixiang Li Guorui Xu Congcong Shen Yong Tang yuxin zhang Keming ma State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of Sciences Beijing 100085China University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMengla 666303China

Above- and below-ground organisms are closely linked, but how elevational distribution pattern of soil microbes shifting across the treeline still remains unknown. Sampling of 140 plots with transect, we herein investigated soil bacterial distribution pattern from a temperate forest up to a subalpine meadow along an elevational gradient using Illumina sequencing. Our results revealed distinct elevational patterns of bacterial diversity above and below the treeline in responding to changes in soil condi- tions： a hollow elevational pattern in the forest （correlated with soil temperature, pH, and C：N ratio） and a significantly de- creasing pattem in the meadow （correlated with soil pH, and available phosphorus）. The bacterial community structure was also distinct between the forest and meadow, relating to soil pH in the forest and soil temperature in the meadow. Soil bacteria did not follow the distribution pattern of herb diversity, but bacterial community structure could be predicted by herb community composition. These results suggest that plant communities have an important influence on soil characteristics, and thus change the elevational distribution of soil bacteria. Our findings are useful for future assessments of climate change impacts on microbial community.

关键词： elevational gradient treeline soil bacteria IHumina MiSeq diversity pattern community structure

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Recent progress and trends in predictive visual analytics

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Frontiers of Computer Science 2017年第2期11卷 192-207页

作者： Junhua LU Wei CHEN yuxin ma Junming KE Zongzhuang LI Fan zhang Ross maCIEJEWSKI State Key Lab of Computer Aided Design and Computer Graphics Zhejiang University Hangzhou 310058 China College of Science Zhejiang University of Technology Hangzhou 310023 China College of Computer Science and Technology Zhejiang University of Technology Hangzhou 310023 China School of Computing Informatics and Decision Systems Engineering Arizona State University Tempe AZ 85287-8809 USA

A wide variety of predictive analytics techniques have been developed in statistics, machine learning and data mining; however, many of these algorithms take a black-box approach in which data is input and future predictions are output with no insight into what goes on during the process. Unfortunately, such a closed system approach often leaves little room for injecting domain expertise and can result in frustration from analysts when results seem snurious or confusing. In order to allow for more human-centric approaches, the visualization community has begun developing methods to enable users to incorporate expert knowledge into the pre- diction process at all stages, including data cleaning, feature selection, model building and model validation. This paper surveys current progress and trends in predictive visual ana- lytics, identifies the common framework in which predictive visual analytics systems operate, and develops a summariza- tion of the predictive analytics workfiow.

关键词： predictive visual analytics visualization visual analytics data mining predictive analysis

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