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| 1 | Activated carbon coated palygorskite as adsorbent by activation and its adsorption for methylene blue显示文摘An activation process for developing the surface and porous structure of palygorskite/carbon(PG/C) nanocomposite using ZnC l2 as activating agent was investigated. The obtained activated PG/C was characterized by X-ray diffraction(XRD), Fourier transform infrared spectroscopy(FTIR), field-emission scanning electron microscopy(SEM), and Brunauer–Emmett–Teller analysis(BET) techniques. The effects of activation conditions were examined,including activation temperature and impregnation ratio. With increased temperature and impregnation ratio, the collapse of the palygorskite crystal structure was found to accelerate and the carbon coated on the surface underwent further carbonization. XRD and SEM data confirmed that the palygorskite structure was destroyed and the carbon structure was developed during activation. The presence of the characteristic absorption peaks of C_C and C–H vibrations in the FTIR spectra suggested the occurrence of aromatization. The BET surface area improved by more than 11-fold(1201 m2/g for activated PG/C vs. 106 m2/g for PG/C) after activation, and the material appeared to be mainly microporous. The maximum adsorption capacity of methylene blue onto the activated PG/C reached 351 mg/g. The activated PG/C demonstrated better compressive strength than activated carbon without palygorskite clay. | Xianlong Zhang Liping Cheng Xueping Wu Yingzhao Tang Yucheng Wu | 2015 | Journal of Environmental Sciences2015，27，7： | 9 |
| 2 | Mapping Spatial Distribution Characteristics of Lineaments Extracted from Remote Sensing Image Using Fractal and Multifractal Models显示文摘Mapping mineral prospectivity in vegetated areas is a challenge. For this reason, we aimed to map spatial distribution characteristics of linear structures detected in remote sensing images using fractal and multifractal models. The selected study area was the Pinghe District of the Fujian Province(China), located in the Shanghang-Yunxiao polymetallic and alunite ore belt(within the Wuyishan polymetallic belt), where mineral resources such as copper, molybdenum, gold, silver, iron, lead, zinc, alunite and pyrophyllite have been discovered. The results of our study showed that:(1) the values of fractal dimension for all lineaments, NW-trending lineaments, and NE-trending lineaments, are 1.36, 1.32, and 1.23, respectively, indicating that these lineaments are statistically self-similar;(2) the fractal dimensions of the spatial distribution of the linear structures in the four selected hydrothermal-type ore deposits of the Pinghe District, named Zhongteng, Panchi, Xiaofanshan and Fanshan, are 1.43, 1.52, 1.37 and 1.37, respectively, which are higher than the mean value in South China;(3) the spatial distribution of the linear structures extracted from the remote sensing image and displayed by the contour map of fractal dimensions, correlates well with the known hydrothermal ore deposits; and(4) the results of the anomaly map decomposed by the spectrum-area(S-A) multifractal model is much better than the original fractal dimension contour map, which showed most of the known hydrothermal-type deposits occur in the high anomalous area. It is suggested that a high step tendency possibly matches with the boundary of the volcanic edifice and the deep fault controlling the development of the rock mass and the volcanic edifice. The complexity of the spatial distribution of mapped lineations(faults) in the Pinghe District, characterized by high values in the anomaly map, may be associated with the hydrothermal polymetallic ore mineralization in the study area. | Cheng Lyu Qiuming Cheng Renguang Zuo Xueping Wang | 2017 | Journal of Earth Science2017，28，3： | 7 |
| 3 | In vitro identification of DNA-binding motif for the new zinc finger protein AtYY1显示文摘系统的分析识别的新奇抄写因素的功能的描述由于不够的数据仍然是主要挑战在表明网络解释他们的特定的角色。这里我们在场一个 DNA 有约束力的顺序发现方法到在 vitro 识别一 G 富有, 11-bp 一篇小说的 DNA 有约束力的主题潜在的抄写因素 AtYY1,在 Arabidopsis 的锌手指蛋白质,由使用在 vitro 帮助反应的聚合酶链选择和表面电浆子回声分析。潜在的主题的保存 G 底的进一步的 mutational 分析证实了明确地绑在这些保存 G 地点的那 AtYY1。另外,染色体宽的目标基因分析表明 AtYY1 涉及多样的细胞的小径,包括葡萄糖新陈代谢,光合作用,向光性,和压力反应。 | Xueping Wu Yongsheng Cheng Tian Li Zhao Wang Jin-Yuan Liu | 2012 | Acta Biochimica et Biophysica Sinica2012，44，6： | 3 |
| 4 | Rolling reduction-dependent deformation mechanisms and tensile properties in aβtitanium alloy显示文摘This work investigated the dependence of deformation mechanisms and mechanical properties on cold rolling reductions of the metastable TB8 titanium alloy.Results shown that the crystal orientation of the matrix changes with the increasing level of reduction,leading to the activation of complex deformation mechanisms in the matrix.When the rolling reduction is 10%,the deformation mechanisms are dominated by dislocations and{332}<113>deformation twins.As the reductions increase to 20%-50%,the secondary deformation twinning(SDT)is triggered in primary deformation twins besides the primary kink band is activated.Meanwhile,the secondary kink bands and{332}<113>twins have be observed in the primary kink bands.When the reduction reaches to 60%,the deformation mechanisms are dominated by dislocations and deformation twins.Furthermore,the matrix refined by crisscrossing among the twins,kink bands and other deformation mechanisms during cold rolling,which shortens the dislocation mean free path and then affects the strength and shape of the alloy.The dynamic Hall-Petch effect and the interaction between multi-scale deformed structures control the work hardening behavior of the alloy. | Zhaoxin Du Qiwei He Ruirun Chen Fei Liu Jingyong Zhang Fei Yang Xueping Zhao Xiaoming Cui Jun Cheng | 2022 | Journal of Materials Science & Technology2022，，9： | 2 |
| 5 | Microstructures, mechanical properties, and grease-lubricated sliding wear behavior of Cu–15Ni–8Sn–0.8Nb alloy with high strength and toughness显示文摘Alloys used as bearings in aircraft landing gear are required to reduce friction and wear as well as improve the load‐carrying capability due to the increased aircraft weights.Cu–15Ni–8Sn–0.8Nb alloy is well known for possessing good mechanical and wear properties that satisfy such requirements.In this study,the microstructure,mechanical properties,and grease‐lubricated sliding wear behavior of Cu–15Ni–8Sn–0.8Nb alloy with 0.8 wt%Nb are investigated.The nanoscale NbNi3 and NbNi2Sn compounds can strengthen the alloy through the Orowan strengthening mechanism.A Stribeck‐like curve is plotted to illustrate the relationship among friction coefficient,normal load,and sliding velocity and to analyze the grease‐lubricated mechanism.The wear rate increases with normal load and decreases with sliding velocity,except at 2.58 m/s.A wear mechanism map has been developed to exhibit the dominant wear mechanisms under various friction conditions.When the normal load is 700 N and the sliding velocity is 2.58 m/s,a chemical reaction between the lubricating grease and friction pairs occurs,resulting in the failure of lubricating grease and an increase in wear. | Jinjuan CHENG Mincong MAO Xueping GAN Qian LEI Zhou LI Kechao ZHOU | 2021 | Friction2021，9，5： | 1 |
| 6 | Heavy metal pollution in sediments of a typical mariculture zone in South China显示文摘 | ZHANG Wenfeng LIU Xueping CHENG Hefa | 2012 | Marine Pollution Bulletin2012，64，4： | 1 |
| 7 | High-energy wave-breaking free pulse from all-fiber mode-locked laser system显示文摘 | Tian Xiaolong Tang Ming Cheng Xueping | 2009 | Opt Ex- press2009，17，： | 1 |
| 8 | Theoretical and experimental investigation of imaging the acoustic fields by Schlieren techniques显示文摘 | JIANG Xueping CHENG Qing QIAN Menglu | 2011 | Technical Acoustics2011，30，5： | 1 |
| 9 | Heavy metal pollution in sediments of a typical mariculture zone in South China显示文摘 | Wenfeng Zhang Xueping Liu and Hefa Cheng | 2012 | Marine Pollution Bulletin2012，64，： | 1 |
| 10 | Mechanistic action of the acute toxicity of Bajitian(Morinda officinalis)in zebrafish embryos显示文摘Objectives:To investigate acute toxicity of Bajitian(Morinda officinalis)in zebrafish embryos.Methods:Zebrafish embryos at 48-h post fertilization(hpf)were exposed to Bajitian ethanol extract for72 h.The causative action of a delay in yolk sac absorption by Bajitian was investigated by RT-PCR analysis of lipid metabolism-related microsomal triglyceride transfer protein(MTP),apolipoprotein CII(ApoC2)and lipogenesis-related liver x receptor(LXR)genes.The effect of Bajitian eliciting an inflammatory response was studied by exposing 72 hpf myeloperoxidase(MPO):GFP transgenic zebrafish embryos to Bajitian extract for 4 h.Assessment was done by TUNEL,caspase-3/7,and RT-PCR analysis of the apoptosis related pathway B-cell lymphoma 2 associated X protein(Bax),Nuclear factor kappa-lightchain-enhancer of activated B cells(NF-k B)genes,neutrophil development-related stem cell leukaemia(SCL)and transcription factor PU.1 genes,to reveal the causative action of Bajitian reducing neutrophils.Results:RT-PCR analysis found that Bajitian extract had no effect on the expression of MTP or ApoC2 genes,but upregulated LXR gene,which might explain the delay in yolk sac absorption.Analysis of the inflammatory response showed that compared with negative controls,Bajitian extract significantly(P<.05)reduced the number of neutrophils in MPO:GFP embryos.TUNEL,caspase-3/7,and RT-PCR analysis of Bax and NF-k B genes found that Bajitian extract did not trigger the cell apoptosis.Further RT-PCR analysis found that Bajitian extract did not affect SCL expression,but did lead to down-regulation of PU.1.The inhibition of neutrophil development/differentiation may explain the decline in the total number of neutrophils following Bajitian treatment,which could be attributed to the anti-inflammatory effects found clinically for this drug.Conclusions:This study demonstrated that Bajitian caused a delay in yolk sac absorption and a decrease neutrophil in zebrafish embryos,which may be related to the inhibition of neutrophil development. | Lirong Tan Min Cheng Gigi Chi Ting Auyeung Oscar Yu Suen Chan Xueping Chen | 2020 | Journal of Traditional Chinese Medical Sciences2020，7，3： | 1 |
| 11 | Construction of a high-density mutant population of Chinese cabbage facilitates the genetic dissection of agronomic traits显示文摘Chinese cabbage(Brassica rapa ssp.pekinensis)is an economically important vegetable crop throughout the world,especially in Asia.High-quality genome sequences are available for Chinese cabbage,but gene functional studies remain challenging.To promote functional genomic studies of Chinese cabbage,we generated an ethyl methane sulfonate(EMS)mutant population of~8000 M_(2) plants using the double haploid inbred line A03 as the parent.The genome of A03 was sequenced and used as a reference for high-throughput functional characterization of gene mutations at the whole-genome level.A total of 300 M_(2) to M_(5) EMS mutants were phenotypically screened and then sequenced,revealing 750629 SNPs and 46272 InDel mutations that cover 98.27%of all predicted genes in the A03 genome.A forward-genetics approach was successfully used to identify two genes with chloroplast-related functions that are responsible for the yellow leaf mutant trait.A reverse-genetics approach was also used to identify associations between mutations in five genes of the glucosinolate biosynthetic pathway and variations in glucosinolate content of the mutant plants.In addition,we built the Chinese cabbage EMS mutation database(CCEMD,www.bioinformaticslab.cn/EMSmutation/home)to increase the usability of this mutant population resource.In summary,we performed large-scale screening of a heading Chinese cabbage EMS mutant collection at the phenotypic and genotypic levels,which will facilitate gene mining of Chinese cabbage and might also be useful for the study of other Brassica crops. | Xiaoxue Sun Xing Li Yin Lu Shan Wang Xiaomeng Zhang Kang Zhang Xiangjie Su Mengyang Liu Daling Feng Shuangxia Luo Aixia Gu Yu Fu Xueping Chen Shuxin Xuan Yanhua Wang Donghui Xu Shumin Chen Wei Ma Shuxing Shen Feng Cheng Jianjun Zhao | 2022 | Molecular Plant2022，15，5： | 1 |
| 12 | Extruded monolith MnO_(x)-CeO_(2)-TiO_(2) catalyst for NH_(3)-SCR of low temperature flue gas from an industry boiler:Deactivation and recovery显示文摘The selective catalytic reduction(SCR) of NO_(x) with NH_(3)(NH_(3)-SCR) technology has been widely applied for reducing NO_(x) emissions from stationary and mobile sources.In this work,the extruded monolith MnO_(x)-CeO_(2)-TiO_(2) catalyst was installed in a cement kiln for NH_(3)-SCR of NO_(x),where the flue gas temperature was 110-140℃.It is found that the monolith catalyst is severely deactivated after operating for about 200 h with almost no NO_(x) conversion at 160℃ under GHSV of 50000 h^(-1),while the fresh monolith catalyst remains 60% NO_(x) conversion.Scanning electron microscopy-energy dispersive spectroscopy(SEM-EDS),X-ray photoelectron spectroscopy(XPS),temperature-programmed desorption of SO_(2)(SO_(2)-TPD) and thermogravimetric-differential thermal analysis(TG-DTG) experiments reveal that both MnO_(x) and CeO_(2) oxides in monolith are severely sulfated to manganese sulfate and cerium sulfate,and the external monolith walls are covered by massive ceria sulfate and little ammonium nitrate.In situ diffuse reflectance infrared Fourier trans form spectroscopy(DRIFTS) analysis demonstrates that the formation of nitrates at low temperatures is inhibited due to the occupation of active sites in MnO_(x)-CeO_(2)-TiO_(2) by sulfates,resulting in the decrease of low temperature activity.After washing with water,the activity of deactivated monolith catalyst can be partially recovered,together with significant loss of manganese and cerium from monolith. | Wei Shi Jingjing Liu Ying Zhu Lin Zhao Yonggang Wang Zhaohuan Cheng Xueping Peng Xiaoyan Shi Yunbo Yu Hong He | 2023 | Journal of Rare Earths2023，41，9： | 0 |
| 13 | ECG Classification Using Deep CNN Improved by Wavelet Transform显示文摘Atrial fibrillation is the most common persistent form of arrhythmia.A method based on wavelet transform combined with deep convolutional neural network is applied for automatic classification of electrocardiograms.Since the ECG signal is easily inferred,the ECG signal is decomposed into 9 kinds of subsignals with different frequency scales by wavelet function,and then wavelet reconstruction is carried out after segmented filtering to eliminate the influence of noise.A 24-layer convolution neural network is used to extract the hierarchical features by convolution kernels of different sizes,and finally the softmax classifier is used to classify them.This paper applies this method of the ECG data set provided by the 2017 PhysioNet/CINC challenge.After cross validation,this method can obtain 87.1%accuracy and the F1 score is 86.46%.Compared with the existing classification method,our proposed algorithm has higher accuracy and generalization ability for ECG signal data classification. | Yunxiang Zhao Jinyong Cheng Ping Zhang Xueping Peng | 2020 | Computers, Materials & Continua2020，，9： | 0 |
| 14 | The exquisite integration of ESIPT, PET and AIE for constructing fluorescent probe for Hg(II) detection and poisoning显示文摘Excessive mercury ions(Hg^(2+)) in the environment can accumulate in human body along with the food chain to cause serious physiological reactions.The fluorescence probes were considered as convenient tool with great potential for Hg^(2+) detection.Most existing probes suffer from aggregation-induced quenching(ACQ) effects and insufficient sensitivity.Herein,a novel type of fluorophore was developed by combining the aggregation-induced emission(AIE) and excited state intramolecular proton transfer(ESIPT) characteristics.Subsequently,a phenyl thioformate group with photoinduced electron transfer(PET)effect was connected to give an efficient 'turn-on' probe(HTM),which exhibited good selectivity toward Hg^(2+),short response time(30 min),coupled with extremely low detection limit(LOD=1.68 nmol/L).In addition,HTM was used successfully in real samples,cells and drug evaluation,underlying the superiority of HTM to detect Hg^(2+) in practical applications. | Xiang Cheng Shuai Huang Qian Lei Fei Chen Fan Zheng Shibo Zhong Xueyan Huang Bin Feng Xueping Feng Wenbin Zeng | 2022 | Chinese Chemical Letters2022，33，4： | 0 |
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