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1Effect of coating modification of cordierite carrier on catalytic performance of supported NiMnO_3 catalysts for VOCs combustion显示文摘NiMnO_3 perovskite catalysts supported on cordierite modified by Ce_xZr_(1-x)O_2 coatings were prepared using impregnation and sol-gel methods for catalytic combustion of single/double component VOCs at different concentrations and GHSV of 15,000 h^(-1), which were characterized by BET, XRD, SEM, FT-IR, H_2-TPR and O_2-TPD. After coating modification, the specific surface area of catalysts is improved obviously.Among the catalysts, the Ce_(0.75)Zr_(0.25)O_2 coating modified NiMnO_3 catalyst exhibits the best catalytic activity for VOCs combustion with 95.6% conversion at 275 ℃ and has stable activity when catalyst is embalmed at 800 ℃. In addition, the catalyst also presents the excellent water-resistant and conversion stability over time-on-stream condition. The reason is that Ce_(0.75)Zr_(0.25)O_2 coating can promote more lattice distortion and defects and smaller crystal size, which improve oxygen transfer capability and dispersion of active component.Lei Deng Chao Huang Jiawei Kan Bing Li Yingwen Chen Shemin Zhu Shubao Shen 2018Journal of Rare Earths2018,36,3:10
2Highly efficient Zr doped-TiO_2/glass fiber photocatalyst and its performance in formaldehyde removal under visible light显示文摘Zr-doped-TiO_2 loaded glass fiber(ZT/GF) composite photocatalysts with different Zr/Ti ratios were prepared with a sol–gel process. Zr4+can replace Ti4+in the TiO_2 lattice, which is conducive to forming the anatase phase and reducing the calcination temperature. The glass fiber carrier was responsible for better dispersion and loading of Zr-doped-TiO_2 particles, improving the applicability of the Zr-doped-TiO_2. The ZT/GF photocatalysts were characterized by X-ray diffraction(XRD), scanning electron microscope(SEM), Fourier transform infrared spectroscopy(FT-IR), ultraviolet–visible spectroscopy(UV–vis) and Barrett–Joyner–Halenda(BJH). The performance of photocatalysts with different loading was evaluated in formaldehyde degradation under visible light at room temperature. ZT/GF0.2exhibited the highest activity, with a formaldehyde removal rate as high as 95.14% being observed, which is better than that of the photocatalyst particles alone. The stability of the catalyst was also tested, and ZT/GF exhibited excellent catalytic performance with 94.38%removal efficiency, even after seven uses.Chao Huang Yaping Ding Yingwen Chen Peiwen Li Shemin Zhu Shubao Shen 2017Journal of Environmental Sciences2017,29,10:6
3Tool Wear in Turning of Titanium Alloy after Thermohydrogen Treatment显示文摘The influence of hydrogen contents on the tool wear has been mainly focused on the flank wear of the common tool,and the influence of hydrogen contents on the rake crater wear(main wear type) of the tool,particularly for the fine granular material tool,has been less investigated comprehensively.In this paper,for the purpose of researching the influence of hydrogen contents on tool wear,the titanium alloy Ti-6Al-4V is hydrogenated at 800 ℃ by thermohydrogen treatment technology and the turning experiments are carried out by applying uncoated WC-Co cemented carbide tool.The three-dimensional video microscope is used to take photos and measure tool wear.The results show that both of crater wear depth(KT) and average flank wear width(VB) firstly decreases and then increases with the increasing of hydrogen content.The maximum reducing amplitude of KT and VB is about 50% and 55%,respectively.Under the given conditions,the optimum hydrogen content is 0.26%.It is considered that the reduction of cutting temperature is an important factor for improving tool wear after the Ti-6Al-4V alloy is properly hydrogenated.Furthermore,the reasons of hydrogen effect on the tool wear are chiefly attributed to comprehensive effect of hydrogen contents on microstructure,physical properties and dynamic mechanical properties of the Ti-6Al-4V alloy.The proposed research provides the basic data for evaluating the machinability of hydrogenation Ti-6Al-4V alloy,and promotes practical application of thermohydrogen treatment technology in titanium alloys.WEI Weihua XU Jiuhua FU Yucan YANG Shubao 2012Chinese Journal of Mechanical Engineering2012,25,4:5
4Acid modified carrier on catalytic oxidation of dichloromethane over CeO_(2)/HZSM-5 catalysts显示文摘In this study,a series of Hydrogen-Zeolite Socony Mobil-5-X(HZSM-5-X) catalysts were prepared by acid modification,then Ce/HZSM-5-X(X=0,0.2,0.4,1.0,2.0) catalysts were prepared by impregnation method.The catalytic performance of the catalysts on dichloromethane(DCM) oxidation was investigated.Through different characterizations,HZSM-5-X exhibit high specific surface area,good redox ability,rich acidity and much suitable acidic site distribution after acid treatment.Among them,Ce/HZSM-5-0.4 shows better catalytic activity with the lowest by-product and the best CO_(2) yield.Its T_(90) is 302℃ and the CO_(2) yield of T_(90) is more than 80 wt%,which demonstrates that the acid modification of carrier plays the positive effect on the catalytic capacity for DCM oxidation.Mengxiang Li Jing Mo Xuanyu Gu Yue Zhou Mengjie Fan Shubao Shen Yingwen Chen 2022Journal of Rare Earths2022,40,10:2
5Prognostic significance of subclassification of pT2 gastric cancer: A retrospective study of 847 patients显示文摘Yang Lu Caigang Liu Ruishan Zhang Hua Li Ping Lu Feng Jin Huimian Xu Shubao Wang Junqing Chen 2008Surgical Oncology2008,,4:1
6Enhanced catalytic oxidation of dichloromethane by a surfactant-modified CeO_(2)@TiO_(2) core-shell nanostructured catalyst显示文摘Surfactant-modified CeO_(2)@TiO_(2) core-shell nanostructure catalysts were prepared by coprecipitation with the addition of sodium dodecyl sulfonate(SDS),and their catalytic oxidation of dichloromethane(DCM) was studied.A 90% DCM conversion efficiency is obtained at 300℃ with the CeO_(2)@TiO_(2)SDS catalyst,and its catalytic stability in the 55 h test period is better than that of Ce/TiO_(2) and CeO_(2)@TiO_(2).Based on the characterization of CeO_(2)@TiO_(2)SDS,the dispersion of active components is promoted due to the inhibition of crystal growth with the introduction of SDS.The improvement of surface acidity and redox capacity is beneficial to the enhancement of catalytic activity.The higher adsorbed oxygen content on the surface of the CeO_(2)@TiO_(2)SDS catalyst is responsible for the better catalytic stability.Generally,a novel method was developed to design catalytic oxidation catalysts for the treatment of chlorinated volatile organic compounds in future applications.Mengjie Fan Qingping Zou Jining Liu Yingwen Chen Jianliang Zhu Shubao Shen 2023Journal of Rare Earths2023,41,7:1
7A quasi-classical trajectory study of the Cl+H2(D2) reaction on a new BW3 potential energy surface显示文摘DONG Shubao FENG Eryin HUANG Wuying CUI Zhifen 2005Czechoslovak J Phys2005,55,:1
8Clinicopathological Characteristics as Predictive Factrs for Lymph Node Metastasis in Submucosal Gastric Cancer显示文摘OBJECTIVE To identify clinicopathological characteristics as predictive factors for lymph node metastasis in submucosal gastric cancer, and in addi- tion to establish objective criteria as indications for endoscopic submucosal dissection (ESD). METHODS Data from 130 patients with submucosal gastric cancer were collected, and the relationship between their clinicopathological characteris- tics and the presence of lymph node metastasis was retrospectively analyzed by multivariate analysis. RESULTS In the multivariate logistic regression model, a tumor size of 2 cm or more and an undifferentiated histologic type were found to be inde- pendent risk clinicopathological characteristics for lymph node metastasis. Among 130 patients with submucosal carcinoma, no lymph node metastases were observed in 17 patients who showed neither of the two risk clinicopath- ological characteristics. Lymph node metastasis occurred in 61.1% (22/36) of the patients who had both risk clinicopathological characteristics. CONCLUSION A tumor size of 2 cm or more and an undifferentiated histologic type were significantly and independently related to lymph node metastasis in submucosal gastric cancer. It is rational for the paitients with neither of these two independent risk clinicopathological characteristics to undergo an ESD.Caigang Liu Ping Lu Yang Lu Lua Li Ruishan Zhang Huimian Xu Shubao Wang Junqing Chen 2007Chinese Journal of Clinical Oncology2007,4,4:1
9An efficient and economical culture approach for the enrichment of purified oligodendrocyte progenitor cells显示文摘Jianqin Niu Lingyun Wang Shubao Liu Chengren Li Jiming Kong Hai-Ying Shen Lan Xiao 2012Journal of Neuroscience Methods2012,,1:1
10Predictive factors of lymph node metastasis in undifferentiated early gastric cancers and application of endoscopic mucosal resection显示文摘Hua Li Ping Lu Yang Lu Caigang Liu Huimian Xu Shubao Wang Junqing Chen 2010Surgical Oncology2010,,4:1
11Clinicopathological Analysis as Predictive Factors for Recurrence in Early Gastric Cancer显示文摘OBJECTIVE To identify clinicopathological characteristics as predictive factors for recurrence in early gastric cancer(EGC),and to determine which lesions should be removed by gastrectomy by means other than endoscopic mucosal resection(EMR). METHODS Data from 249 patients with EGC were collected and the relationship between their clinicopathological characteristics and postoperative recurrence was retrospectively analyzed by univariate analysis. RESULTS Of the 249 patients a er gastrectomy,19 cases(7.6%) experienced a recurrence.The postoperative recurrence rate was 18.9%(7/37)in patients with lymph node metastasis,and 5.7% (12/212)in those without.Lymph node metastases were found to be significantly related to recurrence in EGC(P=0.005). CONCLUSION Lymph node metastases were the only predictive factor for recurrence in EGC.However,this was not the determining factor for performing gastrectomy rather than EMR.Although after gastrectomy with lymphadenectomy of EGC,patients with lymph node metastasis should be considered as candidates for adjuvant treatment.For lymph-node metastatic EGCs,adjuvant therapy is recommended following gastrectomy with lymphadenectomy.Hua Li Ping Lu Caigang Liu Huimian Xu Shubao Wang Junqing Chen 2008Chinese Journal of Clinical Oncology2008,5,2:1
12Blind adaptive multiuser detection using a recurrent neural network 显示文摘LIU Shubao WANG Jun 2004IEEE Trans Commun2004,7,4:1
13Some problems in surgical treatment of gastric cancer显示文摘Chen Junqing Zhang Wenfan Wan Shubao 1991Chin J Cancer Res1991,3,:1
14Blind adaptive multiuser detection using a recurrent neural network显示文摘Liu Shubao Wang Jun 2004IEEE Trans Commun2004,7,4:1
15Blind Adaptive Multiuser Detection Using a Recurrent Neural Network 显示文摘Shubao Liu Jun Wang 2004IEEE Trans Commun2004,7,4:1
16Study on Condition of Third Phase Formation during Extraction of Zirconium by 30%TBP/n-dodecane显示文摘High concentration of plutonium is needed for the plutonium purification cycle in the reprocessing process.The formation of third phase brings a lot of problems.It not only limits the concentration of plutonium in the plutonium purification cycle which restricts the ability to process plutonium,but also reduces the efficiency of processing.Therefore,a study on the formation conditions and laws of the formation of third phase by high concentration plutonium is necessary.Because of the specialty of plutonium,Zr4+(which is similar to plutonium)is used to simulate plutonium to study the influence factors and laws of the third phase formation.CAO Zhi XIE Shubao SU Zhe YUAN Jieqiong 2018中国原子能科学研究院年报2018,,1:0
17回顾性分析162例T4期胃癌术后结果(英文)显示文摘Objective: There is controversy about the best therapeutic surgical approach for treatment of patients with T4 gastric cancer. We evaluated the survival benefit of resection in this group of patients. Methods: We retrospectively reviewed the hospital records of 288 patients with T4 gastric carcinoma to compare the clinicopathological results in patients with curative resection (n = 49) with patients with non-curative resection (n = 113) from 1980 to 2000. Results: Curative resection was performed in 49 (30.2%) patients, with the pancreas being the most frequently resected organ. The 5-year survival rate was 9.3% and the median survival time was 12 months for all 162 registered patients. The 5-year survival rates in patients after curative and non-curative resection were 14.3% vs 7.1% respectively. These values differed considerably between the two groups (P = 0.033). Operative type and curability were independent statistically significant prognostic parameters. Conclusion: Curability was an independent prognostic factor among all registered patients. Patients with T4 gastric carcinoma might be benefited from curative resection.Dapeng Lin Ping Lu Caigang Liu Hongbing Wang Altbad Wu Chong Zhao Huimian Xu Shubao Wang 2009The Chinese-German Journal of Clinical Oncology2009,8,10:0
18Evolution of economic linkage network of the cities and counties on the northern slope of the Tianshan Mountains,China显示文摘The exchanges between cities and counties in the northern slope economic belt of Tianshan Mountains(NSEBTM)are increasingly frequent and the economic linkages are increasingly close,but the spatial distribution of economic development and linkages among the cities and counties within NSEBTM is uneven.Therefore,it is of great significance to study the evolution of spatial-temporal pattern of the economic linkage network of cities and counties on NSEBTM to promote the coordinated and integrated development of the regional economy on NSEBTM.In this study,we used the modified gravity model and social network analysis method to analyze the spatio-temporal evolution characteristics of the economic linkage network structure of cities and counties on NSEBTM in 2000,2010,and 2020.The results showed that the comprehensive development quality level of cities and counties on NSEBTM increased from 2000 to 2020,its growth rate also increased,and its gap between cities and counties continued expanding.Both the spatial distribution patterns of the comprehensive development quality level of cities and counties on NSEBTM in 2000 and 2010 were presented as“high in the middle and low at both ends”,while the spatial distribution pattern of 2020 was exhibited as“high value and low value staggered”.The total amount of external economic linkages of cities and counties on NSEBTM showed an obvious upward trend,and its gap between cities and counties continued expanding,presenting a pattern of“a strong middle section and weak ends”.The direction of economic linkages of NSEBTM existed obvious central orientation and geographical proximity.The density of economic linkage network of NSEBTM increased from 2000 to 2020,and the structure of economic linkage network changed from single-core structure centered with Urumqi City to multicore structure centered with Urumqi City,Karamay City,Shihezi City,and Changji City,shifting from unbalanced development to balanced development.In the future,we should accelerate the construction of urban agglomeration on NSEBTM,cultivate a modern Urumqi metropolitan area,improve comprehensive development quality of the cities and counties at the eastern and western ends,strengthen the intensity of economic linkages between cities and counties,optimize the economic linkage network,and promote the coordinated and integrated development of regional economy.YANG Zeyu ZHANG Shubao LEI Jun ZHANG Xiaolei TONG Yanjun DUAN Zuliang FAN Liqin 2023Regional Sustainability2023,4,2:0
19Real-Time Optimization Model for Continuous Reforming Regenerator显示文摘An approach for the simulation and optimization of continuous catalyst-regenerative process of reforming is proposed in this paper.Compared to traditional method such as finite difference method,the orthogonal collocation method is less time-consuming and more accurate,which can meet the requirement of real-time optimization(RTO).In this paper,the equation-oriented method combined with the orthogonal collocation method and the finite difference method is adopted to build the RTO model for catalytic reforming regenerator.The orthogonal collocation method was adopted to discretize the differential equations and sequential quadratic programming(SQP)algorithm was used to solve the algebraic equations.The rate constants,active energy and reaction order were estimated,with the sum of relative errors between actual value and simulated value serving as optimization objective function.The model can quickly predict the fields of component concentration,temperature and pressure inside the regenerator under different conditions,as well as the real-time optimized conditions for industrial reforming regenerator.Jiang Shubao Jiang Hongbo Li Zhenming Tian Jianhui 2021China Petroleum Processing & Petrochemical Technology2021,23,3:0
20Temporal and spatial responses of ecological resilience to climate change and human activities in the economic belt on the northern slope of the Tianshan Mountains, China显示文摘In the Anthropocene era,human activities have become increasingly complex and diversified.The natural ecosystems need higher ecological resilience to ensure regional sustainable development due to rapid urbanization and industrialization as well as other intensified human activities,especially in arid and semi-arid areas.In the study,we chose the economic belt on the northern slope of the Tianshan Mountains(EBNSTM)in Xinjiang Uygur Autonomous Region of China as a case study.By collecting geographic data and statistical data from 2010 and 2020,we constructed an ecological resilience assessment model based on the ecosystem habitat quality(EHQ),ecosystem landscape stability(ELS),and ecosystem service value(ESV).Further,we analyzed the temporal and spatial variation characteristics of ecological resilience in the EBNSTM from 2010 to 2020 by spatial autocorrelation analysis,and explored its responses to climate change and human activities using the geographically weighted regression(GWR)model.The results showed that the ecological resilience of the EBNSTM was at a low level and increased from 0.2732 to 0.2773 during 2010–2020.The spatial autocorrelation analysis of ecological resilience exhibited a spatial heterogeneity characteristic of'high in the western region and low in the eastern region',and the spatial clustering trend was enhanced during the study period.Desert,Gobi and rapidly urbanized areas showed low level of ecological resilience,and oasis and mountain areas exhibited high level of ecological resilience.Climate factors had an important impact on ecological resilience.Specifically,average annual temperature and annual precipitation were the key climate factors that improved ecological resilience,while average annual evapotranspiration was the main factor that blocked ecological resilience.Among the human activity factors,the distance from the main road showed a negative correlation with ecological resilience.Both night light index and PM2.5 concentration were negatively correlated with ecological resilience in the areas with better ecological conditions,whereas in the areas with poorer ecological conditions,the correlations were positive.The research findings could provide a scientific reference for protecting the ecological environment and promoting the harmony and stability of the human-land relationship in arid and semi-arid areas.ZHANG Shubao LEI Jun TONG Yanjun ZHANG Xiaolei LU Danni FAN Liqin DUAN Zuliang 2023Journal of Arid Land2023,15,10:0
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