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Spatiotemporal Variations and Controls on Anthropogenic Heat Fluxes in 12 Selected Cities in the Eastern China

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Chinese Geographical Science 2021年第3期31卷 444-458页

作者： CAO Zheng wen Ya SONG Song HUNG Chak Ho SUN Hui School of Geographical Sciences Guangzhou UniversityGuangzhou 510006China Guangdong Province Engineering Technology Research Center for Geographical Conditions Monitoring and Comprehensive Analysis Guangzhou 510006China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China College of Resources and Environment South China Agricultural UniversityGuangzhou 510642China S.Department of Urban Planning and Design The University of Hong KongHong Kong 999077China

Spatiotemporal variations of anthropogenic heat flux(AHF)is reported to be associated with global ***,confined to the low spatial resolution of energy consumption statistical data,details of AHF was not well *** obtain high spatial resolution data of AHF,Defense Meteorological Satellite Program/Operational Linescan System(DMSP/OLS)nighttime light time-series product and Moderate Resolution Imaging Spectroradiometer(MODIS)satellite monthly normalized difference vegetation index(NDVI)product were applied to construct the human settlement *** on the spatial regression relationship between human settlement index and energy consumption data.A 1-km resolution dataset of AHF of 12 selected cities in the eastern China was *** least-squares(OLS)model was applied to detect the mechanism of spatial patterns of *** showed that industrial emission in selected cities of the eastern China was accountable for 63%of the total *** emission in megacities,such as Tianjin,Jinan,Qingdao,and Hangzhou,was most *** increasing speed in most areas in the chosen cities was quite *** growth or extremely high growth of AHF were located in central downtown *** Beijing,Shanghai,Guangzhou,Jinan,Hangzhou,Changzhou,Zhaoqing,and Jiangmen,a single kernel of AHF was *** influencing factors showed that precipitation,temperature,elevation,normalized different vegetation index,gross domestic product,and urbanization level were positive with ***,this investigation implied that urbanization level and economic development level might dominate the increasing of AHF and the spatial heterogeneousness of *** urbanization level or economic development level resulted in high increasing speeds of *** findings provide a novel way to reconstruct of AHF and scientific supports for energy management strategy development.

关键词： anthropogenic heat flux(AHF) Defense Meteorological Program/Operational Linescan System(DMSP/OLS)data spatiotemporal variations influencing factors eastern China

CORRELATION OF SiOx LAYER THICKNESS AND PROPERTIES OF BOPP/SiOx COMPOSITE FILMS WITH SPIN COATING PROCESS PARAMETERS

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Chinese Journal of Polymer Science 2013年第2期31卷 333-345页

作者： Xiao-li Yao 马育红 Chang-wen Zhao 杨万泰 Key Laboratory of Carbon Fiber and Functional Polymers Ministry of EducationBeijing University of Chemical Technology State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology

The effects of the spin coating process parameters on the thickness of the SiOx layer of the BOPP/SiOx composite film were investigated. When the concentration of tetraethoxysilane （TEOS） increased from 12.5 vol% to 55% vol%, the SiOx thickness increased from about 80 nm to 470 nm. In the sol time range of 1.5 h to 5 h the SiOx layer thickness reached a maximum at about 4 h and the change of the thickness roughly matched the change of the silica colloidal sphere sizes in sol. When the spin-coating speed of the dispensing stage increased from 450 r/min to 500 r/min, the SiOx layer thickness drastically decreased from about 1.67 gm to 400 nm. While the spin-coating speed of the thinning and drying stage went up to 1200 r/min, the SiOx layer thickness was in the range of 330 nm to 390 nm. It was also found that the SiOx layer thickness was almost increased linearly from about 500 nm to 1.02 gm with the ratio of the commercial silica colloidal to the TEOS from 0.2 to 1.0. The water contact angles decreased to about 23.0° for the BOPP/Si-Sol composite film with 1.67 μm SiOx layer and about 4.0° for the BOPP/mixing Si-Sol composite film with 1.02 μm SiOx layer. Compared to BOPP, the light transparency of the BOPP/Si-Sol composite films decreased by about 5.5% with the SiOx layer from about 80 nm to 1.67 μm and by 7.0% for the BOPP/mixing Si-Sol composite film with the SiOx layer from about 350 nm to 1.02 μm respectively.

关键词： Composites Polypropylene Silicas Spin-coating Hydrophilicity.

Fuzzy super-twisting sliding mode control for municipal wastewater nitrification process

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Science China(Technological Sciences) 2022年第10期65卷 2420-2428页

作者： HAN HongGui WANG Tong SUN HaoYuan WU XiaoLong LI wen QIAO JunFei Faculty of Information Technology Beijing University of TechnologyBeijing 100124China School of Mechanical and Materials Engineering North China University of TechnologyBeijing 100041China

A fuzzy super-twisting algorithm sliding mode controller is developed for the dissolved oxygen concentration in municipal wastewater nitrification process. First, a fuzzy neural network(FNN) model is designed to approach the oxygen dynamics with unmeasurable disturbances, then the established model consists of the nominal system model and the modelling error. Second,based on the FNN model, a super-twisting sliding mode controller is employed to stabilize the nominal system and to suppress the modelling error. Moreover, the stability of the system is investigated and an adaption law is applied to ensure the robustness of the closed-loop system. Finally, the comparison experiments on benchmark simulation model no. 2(BSM2) of wastewater treatment show the advantages of the proposed method in multiple-units oxygen concentration control.

关键词： fuzzy neural network super-twisting sliding mode control robust multivariable control municipal wastewater nitrification process

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Applications of single-cell RNA sequencing in spermatogenesis and molecular evolution

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Zoological Research 2024年第3期45卷 575-585页

作者： wen-Bo Chen Meng-Fei Zhang Fan Yang Jin-Lian Hua College of Veterinary Medicine Shaanxi Centre of Stem Cells Engineering&TechnologyNorthwest A&F UniversityYanglingShaanxi 712100China Key Laboratory of Livestock Biology Northwest A&F UniversityYanglingShaanxi 712100China

Spermatogenic cell heterogeneity is determined by the complex process of spermatogenesis ***,effectively revealing the regulatory mechanisms underlying mammalian spermatogenic cell development and differentiation via traditional methods is *** in technology have led to the emergence of many single-cell transcriptome sequencing protocols,which have partially addressed these *** this review,we detail the principles of 10x Genomics technology and summarize the methods for downstream analysis of single-cell transcriptome sequencing ***,we explore the role of single-cell transcriptome sequencing in revealing the heterogeneity of testicular ecological niche cells,delineating the establishment and disruption of testicular immune homeostasis during human spermatogenesis,investigating abnormal spermatogenesis in humans,and,ultimately,elucidating the molecular evolution of mammalian spermatogenesis.

关键词： Single-cell RNA sequencing(scRNA-seq) Spermatogenesis Molecular evolution Sertoli cell

Decorin Induces Cardiac Hypertrophy by Regulating the CaMKⅡ/MEF-2 Signaling Pathway In Vivo

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Current Medical Science 2021年第5期41卷 857-862页

作者： Yan YANG Wei-wei YU wen YAN Qin XIA Department of Geriatrics Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China

Objective:Cardiac hypertrophy is an adaptive reaction of the heart against cardiac overloading,but continuous cardiac hypertrophy can lead to cardiac remodeling and heart *** hypertrophy is mostly considered reversible,and recent studies have indicated that decorin not only prevents cardiac fibrosis associated with hypertension,but also achieves therapeutic effects by blocking fibrosis-related signaling ***,the mechanism of action of decorin remains unknown and ***:We determined the degree of myocardial hypertrophy by measuring the ratios of the heart weight/body weight and left ventricular weight/body weight,histological analysis and *** blotting was performed to detect the expression levels of CaMKⅡ,p-CaMKⅡ and MEF-2 in the ***:Our results confirmed that decorin can regulate the CaMKⅡ/MEF-2 signaling pathway,with inhibition thereof being similar to that of decorin in reducing cardiac ***:Taken together,the results of the present study showed that decorin induced cardiac hypertrophy by regulating the CaMKⅡ/MEF-2 signaling pathway in vivo,revealing a new therapeutic approach for the prevention of cardiac hypertrophy.

关键词： decorin cardiac hypertrophy calcium/calmodulin-dependent protein kinaseⅡ myocyte enhancer factor 2 atrial natriuretic peptide

THE TWO-LEVEL STABILIZED FINITE ELEMENT METHOD BASED ON MULTISCALE ENRICHMENT FOR THE STOKES EIGENVALUE PROBLEM

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Acta Mathematica Scientia 2021年第2期41卷 381-396页

作者： Juan wen Pengzhan HUANG Ya-Ling HE Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education School of Energy and Power EngineeringXi'an Jiaotong UniversityXi'an 710049China School of Sciences Xi'an University of TechnologyXi'an 710048China College of Mathematics and System Sciences Xinjiang UniversityUrumqi 830046China

In this paper,we first propose a new stabilized finite element method for the Stokes eigenvalue *** new method is based on multiscale enrichment,and is derived from the Stokes eigenvalue problem *** convergence of this new stabilized method is proved and the optimal priori error estimates for the eigenfunctions and eigenvalues are also ***,we combine this new stabilized finite element method with the two-level method to give a new two-level stabilized finite element method for the Stokes eigenvalue ***,we have proved a priori error estimates for this new two-level stabilized ***,numerical examples confirm our theoretical analysis and validate the high effectiveness of the new methods.

关键词： Two-level multiscale finite element method P_(1)/P_(1)elements the Stokes eigenvalue problem

Effects of water regime, crop residues, and application rates on control of Fusarium oxysporum ***

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Journal of Environmental Sciences 2015年第5期27卷 30-37页

作者： Teng wen Xinqi Huang Jinbo Zhang Tongbin Zhu Lei Meng Zucong Cai School of Geography Sciences Nanjing Normal University Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences College of Agriculture Hainan University

Biological soil disinfestation is an effective method to control soil-borne disease by flooding and incorporating with organic amendments, but field conditions and resources sometimes limited its practical application. A laboratory experiment was conducted to develop practice guidelines on controlling Fusarium wilt, a widespread banana disease caused by Fusarium oxysporum f. sp. cubense（FOC）. FOC infested soil incorporated with rice or maize straw at rates of 1.5 tons/ha and 3.0 tons/ha was incubated under flooded or water-saturated（100% water holding capacity） conditions at 30℃ for 30 days. Results showed that FOC populations in the soils incorporated with either rice or maize straw rapidly reduced more than 90% in the first 15 days and then fluctuated till the end of incubation, while flooding alone without organic amendment reduced FOC populations slightly. The rapid and dramatic decrease of redox potential（down to- 350 m V） in straw-amended treatments implied that both anaerobic condition and strongly reductive soil condition would contribute to pathogen inactivation. Water-saturation combined with straw amendments had the comparable effects on reduction of FOC, indicating that flooding was not indispensable for inactivating FOC. There was no significant difference in the reduction of FOC observed in the straw amendments at between 1.5 and 3 tons/ha. Therefore,incorporating soil with straw（rice or maize straw） at a rate of 3.0 tons/ha under 100%water holding capacity or 1.5 tons/ha under flooding, would effectively alleviate banana Fusarium wilt caused by FOC after 15-day treating under 30℃.

关键词： Biological soil disinfestation Banana Fusarium wilt Organic amendments Water regime treatment duration Treatment duration

Multicomponent Reactions for Diverse Synthesis of N-Substituted and NH 1,4-Dihydropyridines

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Chinese Journal of Chemistry 2014年第3期32卷 219-226页

作者： Jieping Wan Youyi Zhou Yunyun Liu Zheng Fang Chengping wen Key Laboratory of Functional Small Organic Molecule Ministry of Educationand College of Chemistry and Chemical EngineeringJiangxi Normal UniversityNanchangJiangxi 330022China College of Basic Medical Sciences Zhejiang Chinese Medical UniversityHangzhouZhejiang 310053China

The multicomponent reactions of aldehydes,electron deficient alkynes and amines have been successfully per-formed to yield a number of symmetrical 2,6-unsubstituted 1,4-dihydropyridines(1,4-DHPs).This method has been found generally applicable for the synthesis of both N-substituted and N-unsubstituted 1,4-DHPs by employing secondary amine to activate the alkyne component via enaminoester *** present method runs through an enamine type activation,which is different from the known approach employing AcOH as solvent.

关键词： multicomponent reactions enamine activation enaminoester 1,4-dihydropyridine diversity

Fluorescent probes for recognition of ATP

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Chinese Chemical Letters 2017年第10期28卷 1916-1924页

作者： Ying Wu Jia wen Hongjuan Li Shiguo Sun Yongqian Xu Shaanxi Key Laboratory of Natural Products & Chemical Biology College of Chemistry & Pharmacy Northwest A&F University Yangling 712100 China

Adenosine 5＇-triphosphate（ATP） not only participates in various physiological activities as the universal energy currency but also implicates in various pathological processes in living cells. Consequently,sensitive and selective detection ATP in live cells, tissues, as well as environmental samples, are urgently demanded. Due to the simple and convenient operation, economy cost, high selectivity for analyte, well biocompatibility and low cytotoxicity, fluorescent sensors for monitoring ATP have aroused great attention of researchers. In recent years, a large number of fluorescent sensors for detecting ATP have developed. This manuscript summarized most of these sensors and the interaction-mechanism between ATP and sensors, mainly including electrostatic interaction, p-p interaction, covalent bonding or hydrogen bond, or combinations of them, and the advantages of each strategy were also ***, a viewpoint of classification was shown where the sensors were divided into five typed ones according to the structure of probes used.

关键词： Fluorescent probes Adenosine 5'-triphosphate(ATP) Cell imaging Sensitive detection Multi-interactions Recognition mechanism