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| 1 | An advanced partitioning process for key elements separation from high level liquid waste显示文摘To separate MA(Am,Cm) and some fission product elements(FPs) such as Tc,Pd,Cs and Sr from high level liquid waste(HLLW) systematically,we have been studying an advanced aqueous partitioning process,which uses selective adsorption as the separation method.For this process,we prepared several novel adsorbents which were immobilized in a porous silica/polymer composite support(SiO 2-P).Adsorption and separation behavior of various elements was studied experimentally in detail.Small scale separation tests using simulated HLLW solutions were carried out.Pd(II) was strongly adsorbed by the AR-01 anion exchanger and effectively eluted off by using thiourea.Successful separation of Pd(II) from simulated HLLW was achieved.Tc(VII) also exhibited strong adsorption on AR-01 and could be eluted off by using U(IV) as a reductive eluent.Am(III) presented significantly high adsorbability and selectivity onto R-BTP/SiO 2-P adsorbents over various FPs including Ln(III).The R-BTP adsorbents were fairly stable in 3 M HNO 3,but instable against-irradiation-3M HNO 3.An advanced partitioning process consisting of three separation columns for the target elements separation from HLLW was proposed and the obtained experiment results indicated that the proposed process is essentially feasible. | WEI YueZhou WANG XinPeng LIU RuiQin WU Yan USUDA Shigekazu ARAI Tsuyoshi | 2012 | Science China Chemistry2012，55，9： | 9 |
| 2 | Realizing high low-electric-field energy storage performance in AgNbO_(3) ceramics by introducing relaxor behaviour显示文摘Both sustainable development in environment and safety of high-power systems require to develop a novel lead-free dielectric capacitor with high energy density(Wrec)at low applied electric field.In this work,a remarkably high Wrec of 2.9 J/cm^(3) accompanying with energy storage efficiency of 56% was achieved in Ag_(0.9)Sr_(0.05)NbO_(3) ceramic at a low applied electric field of 190 kV/cm,by improving antiferroelectricity and introducing relaxor behaviour.The improved anti-ferroelectric stability was attributed to the decreased tolerance factor and average electronegativity difference,while the relaxor behaviour was associated with the increased disordered local structure by Sr-doping.Moreover,the Ag_(0.9)Sr_(0.05)NbO_(3) ceramics also exhibited outstanding temperature stability in energy density with small variation less than 5% over 20-140℃.The results indicate that the Ag_(0.9)Sr_(0.05)NbO_(3) ceramic is a promising candidate for low-electric-field driving capacitors. | Kai Han Nengneng Luo Shuaifei Mao Fangping Zhuo Xiyong Chen Laijun Liu Changzheng Hu Huanfu Zhou Xinpeng Wang Yuezhou Wei | 2019 | Journal of Materiomics2019，5，4： | 5 |
| 3 | Purification of scandium from concentrate generated from titanium pigments production waste显示文摘Nowadays 80%of scandium in China is obtained from titanium pigments production waste through a complex purification process.The study mainly focused on the purification of Sc from its concentrate generated from titanium pigments production waste by solvent extraction.Several extractants have been tried and 10%D_(2)EHPA-5%TBP-85%sulfonated kerosene exhibited the best extraction performance towards Sc in 7 mol/L H_(2)SO_(4)solution,so it was selected as the oil phase.0.5%of H_(2)O_(2)was added into the concentrated solution which can effectively inhibit the extraction of Ti.Both the extraction and back extraction parameters are optimized.The preferred extraction conditions were obtained,i.e.,acidity:7 mol/L H_(2)SO_(4),the phase ratio A/O:10,room temperature,mixed contact time:30 min,Sc concentrate:10 g/L,that the extraction rate of Sc in the above conditions was nearly 100%.NaOH was used for back extraction with the stripping rate 99%on the following conditions:5 mol/L NaOH stripping for 30 min at a phase ratio A/O:1 at 90℃.Finally,H_(2)C_(2)O_(4)was used to further purify the back extraction product and Sc_(2)(C_(2)O_(4))_(3)precipitant fo rmed.The final product Sc_(2)O_(3)with a purity over 99.5%was obtained by calcining Sc_(2)(C_(2)O_(4))_(3)at 1000℃for 2 h.A conceptual process for Sc purification was put forward and proved.The total recovery yield of Sc in the whole process is 95%. | Jie Zhou Shunyan Ning Jiejie Meng Shichang Zhang Wei Zhang Siyi Wang Yedan Chen Xinpeng Wang Yuezhou Wei | 2021 | Journal of Rare Earths2021，39，2： | 4 |
| 4 | Mechanism for nucleation and growth of electrochemical deposition of palladium(II) on a platinum electrode in hydrochloric acid solution显示文摘Palladium(II)and chloride ions tend to form complexes in aqueous solution.Both theoretical and experimental(by UV spectrum)results indicate that there are four complexes formed in aqueous solution containing 3 mol/L hydrochloric acid and 20mmol/L PdCl2.This work evaluates the kinetics of electrochemical deposition of palladium on a Platinum electrode.For this purpose,palladium electrodeposition was investigated by means of cyclic voltammetry(CV),potentiostatic current-time transients(CTTs)and Tafel curve.By CTTs curves,the regions corresponding to the charge transfer control,mixed control and diffusion control were identified.In the diffusion control region,palladium electrodeposition mechanism was characterized as progressive nucleation with three-dimensional(3D)growth under diffusion control;as for the mixed control region,an adsorption(IAds),ion transfer(IIT),and nucleation and growth(ING)model were proposed to analyze the current-time transients quantitatively,which could separate the IAds,IIT and ING perfectly. | GU Shuai WANG XinPeng WEI YueZhou FANG BaiZeng | 2014 | Science China Chemistry2014，57，5： | 2 |
| 5 | Effect of TS-1 Treatment by Mixed Alkaline on Propylene Epoxidation显示文摘Titanium silicate-1(TS-1) was treated with a mixed alkaline of tetrapropyl ammonium hydroxide(TPAOH) and NaOH. It was characterized by XRD, nitrogen physical adsorption, SEM, FT-IR, UV-Vis and ICPOES, and studied in propylene epoxidation. The mixed alkaline treatment with TPAOH/NaOH solution did not destroy the MFI structure of TS-1. With increasing NaOH concentrations, the relative crystallinity and the framework titanium decreased to some extent while the mesopore volume, mesopore diameter, and extra-framework titanium increased appreciably. When NaOH concentration was 0.0333 mol L^(-1), the best catalytic performance was obtained. | Yaquan Wang Haoyang Li Wei Liu Yongjie Lin Xinpeng Han Zhao Wang | 2018 | Transactions of Tianjin University2018，24，1： | 2 |
| 6 | Fertilizer recommendation for maize in China based on yield response and agronomic efficiency显示文摘 | Xinpeng Xu Ping He Mirasol F. Pampolino Adrian M. Johnston Shaojun Qiu Shicheng Zhao Limin Chuan Wei Zhou | 2014 | Field Crops Research2014，，： | 1 |
| 7 | Stability of isoHex-BTP/SiO_2-P adsorbent against acidic hydrolysis and γ-irradiation显示文摘Separation of trivalent minor actinides(MA(ⅡI): Am(ⅡI), Cm(ⅡI)) from fission products(FP) in high-level liquid waste(HLLW) is an important task in advanced nuclear-fuel reprocessing systems. For this purpose, an advanced aqueous partitioning process based on extraction chromatography method was studied. Because R-BTP extractants(R-BTP: 2,6-bis(5,6-dialkyl-1,2,4-triazin-3-yl)pyridine, R = alkyl group) exhibit high selectivity for MA(ⅡI) over trivalent rare-earth elements(RE(ⅡI)), a novel adsorbent isoHex-BTP/SiO2-P was prepared by impregnating isoHex-BTP extractant into the macroporous SiO2-P support with a mean diameter of 60 μm. The stability of isoHex-BTP/SiO2-P against nitric acid and γ-irradiation was investigated. It was found that isoHex-BTP/SiO2-P adsorbent shows good adsorption affinity to Dy(ⅡI). The hydrolytic and radiolytic stability of isoHex-BTP/SiO2-P adsorbent in 0.01 mol/L HNO3 was fairly promising. However, the adsorption amount Q of Dy(ⅡI) decreased dramatically in 3 mol/L HNO3 with the increase of the absorbed dose and became nearly zero at the absorbed dose over 46 kGy. These results suggest that with the synergetic effect of radiation and acidic hydrolysis, the adsorbent instantly loses its efficacy. | WANG XinPeng NING ShunYan LIU RuiQin WEI YueZhou | 2014 | Science China Chemistry2014，57，11： | 1 |
| 8 | ISAR imaging of high-speed moving targets in short-range using impulse radar显示文摘In order to improve the measurement accuracy of weapons, ultra-wideband(UWB) inverse synthetic aperture radar(ISAR) imaging of high-speed moving targets in short-range is studied. In the scheme, because the positions of scatters vary with the radar line-of-sight(LOS) angle when the high-speed target is passing through the closest point of the approach, the concept of equivalent scattering point(ESP) is proposed. The Hough transform is employed to implement ESP motion parameter estimation,while the target translational motion is compensated by using the ESP time delay, and the angle spanned by the target is estimated by utilizing geometric relationship of ESP motion. Finally, the twodimensional image of the target is restructured by using the near field time-domain back-projection algorithm. Simulation results confirm that the proposed method is efficient. | Xinpeng Zhou Guohua Wei Dawei Wang Xu Wang Siliang Wu | 2015 | Journal of Systems Science & Complexity2015，28，5： | 1 |
| 9 | Nutrient requirements for maize in China based on QUEFTS analysis显示文摘 | Xinpeng Xu Ping He Mirasol F. Pampolino Limin Chuan Adrian M. Johnston Shaojun Qiu Shicheng Zhao Wei Zhou | 2013 | Field Crops Research2013，，： | 1 |
| 10 | Estimating nutrient uptake requirements for wheat in China显示文摘 | Limin Chuan Ping He Jiyun Jin Shutian Li Cynthia Grant Xinpeng Xu Shaojun Qiu Shicheng Zhao Wei Zhou | 2013 | Field Crops Research2013，，： | 1 |
| 11 | Hologram-based watermarking capable of surviving print-scan process显示文摘 | WANG Shuozhong HUANG Sujuan ZHANG Xinpeng WU Wei | 2010 | Applied Optics2010，49，7： | 1 |
| 12 | Estimation of Image Rotation Angle Using In-terpolation Related Spectral Signatures with Application to Blind Detection of Image Forgery显示文摘 | WEI Weimin WANG Shuozhong ZHANG Xinpeng | 2010 | IEEE Transactions on Information Forensics and Security2010，5，3： | 1 |
| 13 | Semi-fragile watermarking for image authentication based on compressive sensing显示文摘Dear editor,With the aid of sophisticated photoediting software,multimedia content security is becoming increasingly prominent[1,2].The problems of verifying the integrity and recovering the alterations have been a major research topic for information security and multimedia[3–6].Semi-fragile watermarking techniques are more powerful in dealing with such cases,which are fragile to malicious modifications meanwhile robust to | Ling DU Xiaochun CAO Wei ZHANG Xinpeng ZHANG Na LIU Jianguo WEI | 2016 | Science China(Information Sciences)2016，59，5： | 1 |
| 14 | Non-destructive detection of tea stalk and insect foreign bodies based on THz-TDS combination of electromagnetic vibration feeder显示文摘Background and objectives:Current technology of X-ray imaging can recognize hard foreign materials(FMs)such as metal and high-density plastic.However,low-density foreign bodies are still a challenge for food quality and safety assessment.Materials and methods:An electromagnetic vibration feeder aided by terahertz time-domain spectroscopy(THz-TDS)and imaging was inves-tigated for non-destructively detecting tea stalk and insect FMs mixed with tea leaves.Results:THz time-domain signals were employed directly to develop the K-nearest neighbor model with a precision of 100%,accuracy of 95.6%and recall of 98.7%in predicting the unknown samples.High contrast THz-TDS images were obtained by the separation method for the samples using electromagnetic vibration feeder.The characteristic parameters of the ratio of maximum length(L)to maximum width(W)and hue extracted from THz-TDS images indicated significant difference between tea leaves and FMs.Conclusions:The results suggested that electromagnetic vibration feeder combination with THz-TDS was feasible for detecting FMs in fin-ishingteaproducts. | Xudong Sun Chao Xu Chagen Luo Dongfu Xie Wei Fu Zhiyuan Gong Xinpeng Wang | 2023 | Food Quality and Safety2023，7，2： | 1 |
| 15 | Nutrient requirements for maize in China based on QUEFTS analysis显示文摘 | Xinpeng Xu Ping He Mirasol F. Pampolino Limin Chuan Adrian M. Johnston Shaojun Qiu Shicheng Zhao Wei Zhou | 2013 | Field Crops Research2013，，： | 1 |
| 16 | Estimating nutrient uptake requirements for wheat in China显示文摘 | Limin Chuan Ping He Jiyun Jin Shutian Li Cynthia Grant Xinpeng Xu Shaojun Qiu Shicheng Zhao Wei Zhou | 2013 | Field Crops Research2013，，： | 1 |
| 17 | Estimation of image rotation angle using interpolation-relat- ed spectral signatures with application to blind detection of image forgery显示文摘 | Wei Weimin Wang Shuozhong Zhang Xinpeng | 2010 | IEEE Transactions on Information Foren- sics and Security2010，5，3： | 1 |
| 18 | Estimation of im- age rotation angle using interpolation-related spectral signatures with application to blind detection of image forgery 显示文摘 | WeI Weimin Wang Shuozhong Zhang Xinpeng | 2010 | IEEE Trans on Information Forensics and Security2010，5，3： | 1 |
| 19 | Effect of sugar-free Qishan granules on glucose and lipid metabolism and insulin resistance in a rat model of prediabetes显示文摘OBJECTIVE: To investigate the effects of the Traditional Chinese Medicine Qishan granules(TCM Qishan) on glucose and lipid metabolism, plasma adiponectin, and insulin resistance(IR) in a rat model of prediabetes.METHODS: A prediabetic rat model was established by high-fat diet-feeding. Sugar-free Qishan granules, rosiglitazone, or no treatment were then administered for 10 weeks, after which body mass,fasting blood glucose(FBG), 2-h postprandial blood glucose(2 hPG), hemoglobin A1c(HbA1c),fasting insulin(FINS), 2-h postprandial insulin(2hINS), plasma adiponectin(APN), plasma lipids,and free fatty acids(FFA), and liver pathology, were assessed.RESULTS: The mean mass of the rats treated with various doses of TCM Qishan was significantly lower(P < 0.01) than that of the prediabetic control rats, and that of the rats treated with a high dose of TCM Qishan was significantly lower(P < 0.01) than that of those treated with rosiglitazone. Metabolic indexes and IR were similarly improved by TCM Qishan and rosiglitazone treatment, with FBG, 2hPG,HbA1c, FINS, 2hINS, plasma triglyceride(TG), and FFA levels being significantly lower(P < 0.01), and APN concentration being significantly higher, in both of these treatment groups, than those of the prediabetic control group. The plasma total cholesterol and low-density lipoprotein-cholesterol concentrations of the treatment groups were also significantly lower(P < 0.05 and P < 0.01, respectively)than those of the prediabetic control group, but there were no significant differences in high-density lipoprotein-cholesterol concentrations. A high dose of TCM Qishan was slightly more effective than rosiglitazone at reducing TG concentration.The prediabetic control rats demonstrated severe hepatic steatosis, and the high dose of TCM Qishan significantly ameliorated this.CONCLUSION: TCM Qishan significantly reduces weight gain, ameliorates defects in glucose and lipid metabolism, and increases insulin sensitivity and plasma APN concentration in prediabetic rats. The effect of TCM Qishan on body mass was superior to that of rosiglitazone, and its other effects were of similar magnitude. | Wei Yan Hong Yuizhi Hou Pengchao Xu Xinpeng | 2019 | Journal of Traditional Chinese Medicine2019，39，4： | 1 |
| 20 | Detail description of Lithophyllum okamurae(Lithophylloideae,Corallinales), a widely distributed crustose coralline alga in marine ecosystems显示文摘Lithophyllum okamurae is one of the important encrusting coralline algae,which plays important roles as primary producer,carbonate sediment builder,and habitat provider in the marine ecosystems.In this study,L.okamurae was collected from tropical coast of Sanya,and firstly described based on both detailed morph-anatomical characteristics and molecular studies of typic DNA sequences.The structure of the thalli of L.okamurae was pseudoparenchymatous construction with radially organized dimerous organizations in the crustose portion.The pseudoparenchymatous construction were composed of three parts,including 1 to 3 layers of epithelia cells which had flatten to round outermost walls,one layer of square or rectangular cells of the hypothallia and multiple layers of square or elongated rectangular peripheral cells.Palisade cells were observed,and the cells of the contiguous vegetative filaments were connected by secondary pit-connections with cell fusions absent.The carposporangial conceptacles,the spermatangial conceptacles,the bisporangial conceptacles and the tetrasporangial conceptacles were observed,and all these four kinds of conceptacles were uniporate.The spermatangial conceptacles were slightly convex and buried at shallow depths in the thalli tissues,and the carposporangial conceptacles and asexual conceptacles were protruding and conical.Phylogenetic studies based on DNA barcoding markers of 18 S rDNA,COI,rbc L and psb A revealed that L.okamurae clustered with the closest relation of L.atlanticum,and formed a distinct branch.Based on the comparative anatomical features and the molecular data,the detailed description of the valid species of L.okamurae was firstly given in this study to provide theoretical basis for algae resources utilization and conservation in marine ecosystems. | Qunju Hu Fangfang Yang Zhangliang Wei Jiahao Mo Chao Long Xinpeng Tian Lijuan Long | 2020 | Acta Oceanologica Sinica2020，39，6： | 0 |
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