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38篇 您的检索式:作者名="Zhiming Zhong"
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1Review-material degradation assessed by digital image processing:Fundamentals,progresses,and challenges显示文摘Material degradation is accompanied by the changes in surface structure,morphology,and composition.These changes can be recorded by a variety of image acquisition devices that export digital images in grayscale or true color to a detector.Information regarding corrosion type and extent can be extracted with image processing methods.This paper provides a comprehensive review of material degradation assessed by digital image processing.Digital image processing systems used to assess material degradation are briefly reviewed,and the algorithms developed to process metallic materials degradation images are described.Physical and electrochemical methods that can be used to support digital image processing results are summarized,and future work that will augment the present methods of evaluating material degradation are discussed.Da-Hai Xia Shizhe Song Lei Tao Zhenbo Qin Zhong Wu Zhiming Gao Jihui Wang Wenbin Hu Yashar Behnamian Jing-Li Luo 2020Journal of Materials Science & Technology2020,52,18:8
2Electronic effect on the optical properties and sensing ability of AIEgens with ESIPT process based on salicylaldehyde azine显示文摘Two novel AIE-active salicylaldehyde azine(SAA) derivatives with a typical excited-state intramolecular proton transfer(ESIPT) process are prepared by introducing electron-withdrawing and donating groups at para-position of phenolic hydroxyl group(CN-SAA and TPA-SAA). The effect of the proton activity in SAA framework on their optical behaviors is investigated spectroscopically. The results from NMR and solvation measurements show that the proton of phenolic hydroxyl group has higher activity when there are electron-withdrawing groups, and the absorption and fluorescence spectra in buffers with different pH also provide the same results. After inviting F. as a nucleophilic probe, this proton activity difference in CN-SAA and TPA-SAA becomes more obvious. The potential application of both molecules is investigated. TPA-SAA exhibits good quantitative sensing ability towards F. with a fluorescence 'turn-on' mode, whereas the aggregates of TPA-SAA can selectively and sensitively detect Cu2+ in aqueous solution. From these results, a structure-property relationship is established: the occurrence of ESIPT process will become much easier when linking electron-withdrawing groups at the para-position of phenolic hydroxyl group(e.g., CN-SAA),and it is better to introduce electron-donating groups to enhance the sensing ability towards ions(e.g., TPA-SAA). This work will provide guidance for further design and preparation of AIE-active luminogens with ESIPT process for sensing applications.Zhiming Wang Fan Zhou Jing Wang Zujin Zhao Anjun Qin Zhenqiang Yu Ben Zhong Tang 2018Science China Chemistry2018,61,1:3
3Comparative WGBS identifies genes that influence non-ripe phenotype in tomato epimutant Colourless non-ripening显示文摘Whole-genome bisulfite sequencing(WGBS)allows single-base resolution and genome-wide profiling of DNA methylation in plants and animals.This technology provides a powerful tool to identify genes that are potentially controlled by dynamic changes of DNA methylation and demethylation.However,naturally occurring epimutants are rare and genes under epigenetic regulation as well as their biological relevances are often difficult to define.In tomato,fruit development and ripening are a complex process that involves epigenetic control.We have taken the advantage of the tomato epimutant Colourless non-ripening(Cnr)and performed comparative mining of the WGBS datasets for the Cnr and Sl CMT3-silenced Cnr fruits.We compared DNA methylation profiles for the promoter sequences of approximately 5,000 bp immediately upstream of the coding region of a list of20 genes.Differentially methylated regions were found for some of these genes.Virus-induced gene silencing(VIGS)of differentially methylated gene Sl DET1 or Sl PDS resulted in unusual brown pigmentation in Cnr fruits.These results suggest that comparative WGBS coupled with VIGS can be used to identify genes that may contribute to the colourless unripe phenotype of fruit in the Cnr epimutant.Weiwei Chen Zhiming Yu Junhua Kong Hui Wang Yichen Li Mei Zhao Xiaohong Wang Qianqian Zheng Nongnong Shi Pengcheng Zhang Silin Zhong Paul Hunter Mahmut Tor Yiguo Hong 2018Science China(Life Sciences)2018,61,2:3
4Current status of bacteriological parameters and DOC/POC in Xiamen coastal waters显示文摘The surface and bottom waters samples were collected from six locations in Xiamen west-em sea. The quantified estimation of bacterial production (3H-thymidine method) and observation ofbacterial heterotrophic activity (14C-glucose method) have been made in order to have a better under-standing of the role of marine bacteria and their activities. The results showed that the mean value ofbacterial heterotrophic activity was 9 × 108 cells/(L. h) in the surface waters and 2.6 × 108 cells/( L. h)in the bottom waters. The mean value of bacterial production was 38 × 108 cells/( L. h) in the surfacewaters and 7.1 × 108 cells/(L.h) in the bottom waters. The relationship between bacterial production,heterotrophic activity, POC and DOC measured during this survey were discussed. The good under-standing of the relationship between bacteria activity and total coliform was addressed.Khalid Maskaoui, Tianling Zheng , Huasheng Hong Zhiming Yu, Zhong Hu, Yun Tian, Lizhe Cai School of Life Sciences, Xiamen University, Xiamen 361005, ChinaKey Laboratory of Marine Environmental Science of SED, Xiamen 361005, ChinaKey Laboratory of Marine Ecology & Environmental Science, Chinese Academy of Sciences, Qingdao 266071, China + Corresponding author:86-592-2183217,Fax:86-592-2181510. E-mail: wshwzh @ jingxian. xmu. edu. cn 2003Acta Oceanologica Sinica2003,22,3:2
5Activation of the cold-sensing TRPM8 channel triggers UCP1-dependent thermogenesis and prevents obesity显示文摘Brown adipose tissue(BAT)is an energy-expending organ that produces heat.Expansion or activation of BAT prevents obesity and diabetes.Chronic cold exposure enhances thermogenesis in BAT through uncoupling protein 1(UCP1)activation triggered via a b-adrenergic pathway.Here,we report that the cold-sensing transient receptor potential melastatin 8(TRPM8)is functionally present in mouse BAT.Challenging brown adipocytes with menthol,a TRPM8 agonist,up-regulates UCP1 expression and requires protein kinase A activation.Upon mimicking long-term cold exposure with chronic dietary menthol application,menthol significantly increased the core temperatures and locomotor activity in wild-type mice;these effects were absent in both TRPM82/2 and UCP12/2 mice.Dietary obesity and glucose abnormalities were also prevented by menthol treatment.Our results reveal a previously unrecognized role for TRPM8,suggesting that stimulation of this channel mediates BAT thermogenesis,which could constitute a promising way to treat obesity.Shuangtao Ma Hao Yu Zhigang Zhao Zhidan Luo Jing Chen Yinxing Ni Rongbing Jin Liqun Ma Peijian Wang Zhenyu Zhu Li Li Jian Zhong Daoyan Liu Bernd Nilius Zhiming Zhu 2012Journal of Molecular Cell Biology2012,4,2:2
6Understanding the Percolation Effect in Triboelectric Nanogenerator with Conductive Intermediate Layer显示文摘Introducing the conductive intermediate layer into a triboelectric nanogenerator(TENG)has been proved as an efficient way to enhance the surface charge density that is attributed to the enhancement of the dielectric permittivity.However,far too little attention has been paid to the companion percolation,another key element to affect the output.Here,the TENG with MXeneembedded polyvinylidene fluoride(PVDF)composite film is fabricated,and the dependence of the output capability on the MXene loading is investigated experimentally and theoretically.Specifically,the surface charge density mainly depends on the dielectric permittivity at lower MXene loadings,and in contrast,the percolation becomes the degrading factor with the further increase of the conductive loadings.At the balance between the dielectric and percolation properties,the surface charge density of the MXene-modified TENG obtained 350%enhancement compared to that with the pure PVDF.This work shed new light on understanding the dielectric and percolation effect in TENG,which renders a universal strategy for the high-performance triboelectronics.Binbin Zhang Guo Tian Da Xiong Tao Yang Fengjun Chun Shen Zhong Zhiming Lin Wen Li Weiqing Yang 2021Research2021,,1:2
7Large-scale multiferroic complex oxide epitaxy with magnetically switched polarization enabled by solution processing显示文摘Complex oxides with tunable structures have many fascinating properties,though high-quality complex oxide epitaxy with precisely controlled composition is still out of reach.Here we have successfully developed solution-based single-crystalline epitaxy for multiferroic(1-x)BiTi(1-y)/2FeyMg(1-y)/2O3–(x)CaTiO3(BTFM–CTO)solid solution in large area,confirming its ferroelectricity at the atomic scale with strong spontaneous polarization.Careful compositional tuning leads to a bulk magnetization of 0.07±0.035μB/Fe at room temperature,enabling magnetically induced polarization switching exhibiting a large magnetoelectric coefficient of 2.7–3.0×10^-7 s/m.This work demonstrates the great potential of solution processing in large-scale complex oxide epitaxy and establishes novel room-temperature magnetoelectric coupling in epitaxial BTFM–CTO film,making it possible to explore a much wider space of composition,phase,and structure that can be easily scaled up for industrial applications.Cong Liu Feng An Paria S.M.Gharavi Qinwen Lu Junkun Zha Chao Chen Liming Wang Xiaozhi Zhan Zedong Xu Yuan Zhang Ke Qu Junxiang Yao Yun Ou Zhiming Zhao Xiangli Zhong Dongwen Zhang Nagarajan Valanoor Lang Chen Tao Zhu Deyang Chen Xiaofang Zhai Peng Gao Tingting Jia Shuhong Xie Gaokuo Zhong Jiangyu Li 2020National Science Review2020,7,1:2
8Lamellar hafnium ditelluride as an ultrasensitive surface-enhanced Raman scattering platform for label-free detection of uric acid显示文摘The development of two-dimensional(2D)transition metal dichalcogenides has been in a rapid growth phase for the utilization in surface-enhanced Raman scattering(SERS)analysis.Here,we report a promising 2D transition metal tellurides(TMTs)material,hafnium ditelluride(HfTe2),as an ultrasensitive platform for Raman identification of trace molecules,which demonstrates extraordinary SERS activity in sensitivity,uniformity,and reproducibility.The highest Raman enhancement factor of 2.32×10^(6)is attained for a rhodamine 6G molecule through the highly efficient charge transfer process at the interface between the HfTe2 layered structure and the adsorbed molecules.At the same time,we provide an effective route for large-scale preparation of SERS substrates in practical applications via a facile stripping strategy.Further application of the nanosheets for reliable,rapid,and label-free SERS fingerprint analysis of uric acid molecules,one of the biomarkers associated with gout disease,is performed,which indicates arresting SERS signals with the limits of detection as low as 0.1 mmol/L.The study based on this type of 2D SERS substrate not only reveals the feasibility of applying TMTs to SERS analysis,but also paves the way for nanodiagnostics,especially early marker detection.YANG LI HAOLIN CHEN YANXIAN GUO KANGKANG WANG YUE ZHANG PEILIN LAN JINHAO GUO WEN ZHANG HUIQING ZHONG ZHOUYI GUO ZHENGFEI ZHUANG ZHIMING LIU 2021Photonics Research2021,9,6:2
9Multiplexed imaging detection of live cell intracellular changes in early apoptosis with aggregation-induced emission fluorogens显示文摘Apoptosis is an important process for maintaining tissue homeostasis and eliminating abnormal cells in multicellular organisms.Abnormality in apoptosis often leads to severe diseases such as cancers. Better understanding of its mechanisms and processes is therefore important. Accompanying molecular biology events of apoptosis is a series of cellular morphology changes: nucleus condensation, cell shrinkage and rounding, cell surface blebbing, dynamic blebbing, apoptotic membrane protrusions and nucleus fragmentations and finally, the formation and release of apoptotic bodies. It is difficult to detect cellular changes in the early phase of apoptosis due to the subtle changes at this phase. In the current study, we induced apoptosis in He La cells with H2 O2 and used nuclear dye Hoechst 33258, mitochondria, lysosome and cytoplasmic protein specific aggregation-induced emission fluorogens(AIEgens), TPE-Ph-In, 2 M-DABS and BSPOTPE to successfully perform live cell multiplexed imaging to investigate early apoptosis cellular events. We showed the gradual dissipation of mitochondria membrane potential until it is nondetectable by TPE-Ph-In. Increased mitophagy detected by TPE-Ph-In and 2 M-DABS, condensed nucleus detected by Hoechst33258, increased permeability and/or reduced integrity of nuclear membrane, and increased intracellular vesicles detected by2 M-DABS are some of the early events of apoptosis.Yabin Zhou Haixiang Liu Na Zhao Zhiming Wang Michael Z.Michael Ni Xie Ben Zhong Tang Youhong Tang 2018Science China Chemistry2018,61,8:2
10Apparent quantum yield of photosynthesis of winter wheat and its response to temperature and intercellular CO_2 concentration under low atmospheric pressure on Tibetan Plateau显示文摘The Tibetan Plateau is characterized by lower atmospheric pressure, lower air temperature and high daily and seasonal variation due to high elevation. The photosynthesis of plants is significantly influenced by these alpine environmental factors. Apparent quantum yield (αA) is one of the basic parameters of photosynthesis and mass production. Its accuracy determination is of significance to model photosynthesis of C3 plants and global change on the plateau. In the Lhasa Plateau Ecological Station with 65.4 kPa of atmospheric pressure at an elevation of 3688 m, Li-Cor 6400 portable photosynthesis system was used to measure light response curves of winter wheat in different temperatures and intercellular CO2 concentration (Ci).The slope of light response curve in weak light area of PFD from 0 to 150 μmol m-2 S-1 was used to evaluate the value of αA. The dependence of αA on temperature and intercellular concentration was analyzed. In 30℃, the average value of αAWaS 0.0476 ± 0.0038. It is not quite different from the values in low elevation areas. αA is influenced both by temperature and by the ratio of CO2and O2 partial pressure ([CO2]/[O2]). The measured values in the previous study were much lower.This might be due to systematic errors from instrument and data processing methods. The values of αA decreased linearly with temperature. It decreased 0.0007 in every 1℃ increase of temperature. The decrease slope is similar to those of C3 plants in the previous researches. While [O2] is constant, αA increases with Ciwith a hyperbolic relationship. In comparison with low elevation areas, the αA on the Tibetan Plateau is more sensitive to increase of CO2.SHI Peili ZHANG Xianzhou ZHONG Zhiming 2005Science China Earth Sciences2005,48,z1:2
11Transient receptor potential vanilloid I activation by dietary capsaicin promotes urinary sodium excretion by inhibiting epithelial sodium channel α subunit-mediated sodium reabsorption显示文摘Li Li Wang FeiiWei Xing Liang Yi Cui Yuanting Gao Feng Zhong Jian Pu Yunfei Zhao Yu Yan Zhencheng Arendshorst William J Nilius Bemd Chen Jing'Liu Daoyan Zhu Zhiming 2014Hypertension2014,642,:1
12Uncommon Intramolecular Charge Transfer Effect and Its Potential Application in OLED Emitters显示文摘Planarized intramolecular charge transfer(PLICT)state can facilitate the fluorescence process thanks to the relative excellent planarity.Recently,we have discovered that the excited state quinone-conformation induced planarization(ESQIP)occurring on tetraphenylpyrazine(TPP)based derivatives could furnish them with PLICT feature.Unlike to the well-known intramolecular charge transfer,strengthening the electron-donating nature on the donor(D)moiety did not impair the PLICT.The calculation results showed that planarization of the TPP based compounds scarcely accompanied with energy wastage while amount of energy was required for the torsion on geometries.In the polar solvents,the energy consumption for planarization could further decrease,but that for twisting structure would increase.To take advantage of the transformation of the frontier orbitals'distribution,the PLICT type materials would perform a potential application on organic light-emitting diodes(OLEDs).WU Haozhong LUO Juanjuan XU Zeng WANG Zhiming MA Dongge QIN Anjun TANG Ben Zhong 2020Chemical Research in Chinese Universities2020,36,1:1
13A new design on switched capacitor DC-DC converters for pocket computer systems显示文摘Liu Jian Chen Zhiming Du Zhong 1998IEEE Trans on Industry Electronics1998,45,2:1
14Spintronics in Two-Dimensional Materials显示文摘Spintronics,exploiting the spin degree of electrons as the information vector,is an attractive field for implementing the beyond Complemetary metal-oxide-semiconductor(CMOS)devices.Recently,two-dimensional(2D)materials have been drawing tremendous attention in spintronics owing to their distinctive spin-dependent properties,such as the ultralong spin relaxation time of graphene and the spin-valley locking of transition metal dichalcogenides.Moreover,the related heterostructures provide an unprecedented probability of combining the di erent characteristics via proximity e ect,which could remedy the limitation of individual 2D materials.Hence,the proximity engineering has been growing extremely fast and has made significant achievements in the spin injection and manipulation.Nevertheless,there are still challenges toward practical application;for example,the mechanism of spin relaxation in 2D materials is unclear,and the high-effciency spin gating is not yet achieved.In this review,we focus on 2D materials and related heterostructures to systematically summarize the progress of the spin injection,transport,manipulation,and application for information storage and processing.We also highlight the current challenges and future perspectives on the studies of spintronic devices based on 2D materials.Yanping Liu Cheng Zeng Jiahong Zhong Junnan Ding Zhiming MWang Zongwen Liu 2020Nano-Micro Letters2020,12,7:1
15Sulfonated poly(ether ether ketone)/aminopropyltriethoxysilane/phosphotungstic acid hybrid membranes with non-covalent bond: Characterization, thermal stability, and proton conductivity显示文摘Tiezhu Fu Jing Wang Jing Ni Zhiming Cui Shuangling Zhong Chengji Zhao Hui Na Wei Xing 2008Solid State Ionics2008,,39:1
16Silencing of phosphoethanolamine N-Methyltransferase results in temperature-sensitive male sterility and salt hypersensitivity in Arabidopsis显示文摘ZHONG Linmou WANG Xiaoqun FU Zhiming 2002The Plant Cell2002,14,4:1
17Association of angiotensin-converting enzyme 2 gene A/G polymorphism and elevated blood pressure in Chinese patients with metabolic syndrome显示文摘Jian Zhong Zhengchen Yan Daoyan Liu Yinxing Ni Zhigang Zhao Shanjun Zhu Martin Tepel Zhiming Zhu 2006The Journal of Laboratory and Clinical Medicine2006,,2:1
18Strategy evaluation and optimization with an artificial society toward a Pareto optimum显示文摘Strategy evaluation and optimization in response to troubling urban issues has become a challenging issue due to increasing social uncertainty,unreliable predictions,and poor decision-making.To address this problem,we propose a universal computational experiment framework with a fine-grained artificial society that is integrated with data-based models.The purpose of the framework is to evaluate the consequences of various combinations of strategies geared towards reaching a Pareto optimum with regards to efficacy versus costs.As an example,by modeling coronavirus disease 2019 mitigation,we show that Pareto frontier nations could achieve better economic growth and more effective epidemic control through the analysis of real-world data.Our work suggests that a nation’s intervention strategy could be optimized based on the measures adopted by Pareto frontier nations through large-scale computational experiments.Our solution has been validated for epidemic control,and it can be generalized to other urban issues as well.Zhengqiu Zhu Bin Chen Hailiang Chen Sihang Qiu Changjun Fan Yong Zhao Runkang Guo Chuan Ai Zhong Liu Zhiming Zhao Liqun Fang Xin Lu 2022The Innovation2022,3,5:1
19Experimental Analysis of the Influence of Exhaust Thermal Management on Engine NO_(x) Emission显示文摘Exhaust thermal management is essential to allow engines to meet the Euro VI emissions standards and reducing nitrogen oxide emissions is one of the most important targets being pursued nowadays.Along these lines,in the present study,engine’s thermal performances have been evaluated on the basis of a WHTC test,namely a transient engine dynamometer schedule defined by the global technical regulation(GTR)developed by the UN ECE GRPE group(the GTR is covering a world-wide harmonized heavy-duty certification(WHDC)procedure for engine exhaust emissions).The influence of thermal management on fuel consumption,intake,and tailpipe NO_(x) have been quantitatively analyzed for the overrun state.The results have shown that there can be a strong influence on the after-treatment temperatures and tailpipe NO_(x).In particular,the average temperature upstream of the diesel oxidation catalyst(DOC)has been found to increase from 245°C to 254°C,the average temperature of the selective catalytic reduction(SCR)to increase from 248°C to 253°C,the SCR’s minimum temperature to increase from 196°C to 204°C,and the peak value of the NO_(x) emissions in the low-temperature region to decrease from 73 to 51 mg/s.However,the influence of the overrun state’s thermal management strategy on the fuel consumption,the air intake,the ammonia storage,the NO_(2)/NO_(x) ratio,and the urea consumption has been observed to be relatively limited.Jinliang Zhu Xiulei Wang Guihua Wang Xianglin Zhong Zhenguo Li Zhiming Wang Ke Sun Shuzhan Bai 2022Fluid Dynamics & Materials Processing2022,18,3:1
20Diurnal and seasonal variability of soil CO2 efflux in a cropland ecosystem on the Tibetan Plateau显示文摘Peili Shi Xianzhou Zhang Zhiming Zhong 2005Agricultural and Forest Meteorology2005,,:1
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