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8篇 您的检索式:作者名="ZHAO Hengjun"
    题名 作者 年代 出处 被引量
1China's Energy Consumption Forecasting by GMDH Based Auto-Regressive Model显示文摘It is very significant for us to predict future energy consumption accurately. As for China's energy consumption annual time series, the sample size is relatively small. This paper combines the traditional auto-regressive model with group method of data handling(GMDH) suitable for small sample prediction, and proposes a novel GMDH based auto-regressive(GAR) model. This model can finish the modeling process in self-organized manner, including finding the optimal complexity model, determining the optimal auto-regressive order and estimating model parameters. Further, four different external criteria are proposed and the corresponding four GAR models are constructed. The authors conduct empirical analysis on three energy consumption time series, including the total energy consumption, the total petroleum consumption and the total gas consumption. The results show that AS-GAR model has the best forecasting performance among the four GAR models, and it outperforms ARIMA model, BP neural network model, support vector regression model and GM(1, 1) model.Finally, the authors give the out of sample prediction of China's energy consumption from 2014 to 2020 by AS-GAR model.XIE Ling XIAO Jin HU Yi ZHAO Hengjun XIAO Yi 2017Journal of Systems Science & Complexity2017,30,6:2
2Public-transcriptome-database-assisted selection and validation of reliable reference genes for qRT-PCR in rice显示文摘Accurate quantitative reverse transcription PCR(q RT-PCR)requires reliable reference genes whose expression does not vary in different tissues and developmental stages.However,few reliable reference genes are available for q RT-PCR in rice(Oryza sativa).Here,we established an effective strategy for identifying novel reference genes(NRGs)for reliable normalization of q RT-PCR data in various rice organs and developmental stages.We selected candidate NRGs using the Information Commons for Rice Database and confirmed their expression in Rice Expression Profile Database(Rice XPro)data.Genes with low variation(<2.5 cycle quantification)across tissues and developmental stages,and little fluctuation in expression in heatmaps from Rice XPro data were considered stable NRGs.To validate this strategy,we selected 11 candidate NRGs and calculated their expression stability in different spatio-temporal conditions using five programs,and compared these genes with five established reference genes(ERGs).Only one of the ERGs(UBQ5)was reliable and 10 of the candidate NRGs were more stable than the four remaining ERGs.Therefore,public transcriptomic databases are useful for identifying NRGs.We selected two NRGs,UFC1(Homolog of UFM1-Conjugating Enzyme 1)and Fha B(Homolog of Adhesin Fha B)for q RT-PCR analysis in rice;their homologs might be suitable for other monocot plants.Zhe Zhao Zixu Zhang Zhi Ding Hengjun Meng Rongxin Shen Huiwu Tang Yao-Guang Liu Letian Chen 2020Science China(Life Sciences)2020,63,1:2
3Combination of radiofrequency ablation and sequential cellular immunotherapy improves progression‐free survival for patients with hepatocellular carcinoma显示文摘Jiuwei Cui Nanya Wang Hengjun Zhao Haofan Jin Guanjun Wang Chao Niu Hiroshi Terunuma Hua He Wei Li 2014Int. J. Cancer2014,,:1
4Multi-focus image fusion based on the neighbor distance显示文摘Zhao Hengjun Shang Zhaowei Tang Yuanyan 2013Pattern Recognition2013,46,3:1
5A safe and efficient process for the preparation of difluoromethane in continuous flow显示文摘Difluoromethane is typically produced vialiquid-phase fluorination as performed in a batch reactor.However,this process suffers from some problems,e.g.,severe corrosion of the reactor,high safety risk,and the regeneration of the catalyst.In this paper,a flow process as performed in the tubular reactor was designed.The optimum conditions for continuous synthesis of difluoromethane were obtained as follows:the reaction temperature was 100℃,the molar ratio of dichloromethane to hydrogen fluoride was 1.6:1 and the reaction time was 300 s.The operation of the cyclic process was stable for 24 h with the conversion per pass of hydrogen fluoride up to 16.2%.The unreacted raw materials were easily reused.The deactivation of the common catalyst,antimony pentachloride,was investigated by catalyst concentration curve and XPS analysis.The approach proposed in this work is proven to be safe,efficient and low amount of catalyst.Tao Shen Xin Ge Hengjun Zhao Zhixiong Xu Shaofeng Tong Shaodong Zhou Chao Qian Xinzhi Chen 2020Chinese Journal of Chemical Engineering2020,28,7:1
6DISCOVERING NON-TERMINATING INPUTS FOR MULTI-PATH POLYNOMIAL PROGRAMS显示文摘This paper investigates the termination problems of multi-path polynomial programs(MPPs)with equational loop guards.To establish sufficient conditions for termination and nontermination simultaneously,the authors propose the notion of strong/weak non-termination which under/overapproximates non-termination.Based on polynomial ideal theory,the authors show that the set of all strong non-terminating inputs(SNTI) and weak non-terminating inputs(WNTI) both correspond to the real varieties of certain polynomial ideals.Furthermore,the authors prove that the variety of SNTI is computable,and under some sufficient conditions the variety of WNTI is also computable.Then by checking the computed SNTI and WNTI varieties in parallel,termination properties of a considered MPP can be asserted.As a consequence,the authors establish a new framework for termination analysis of MPPs.LIU Jiang XU Ming ZHAN Naijun ZHAO Hengjun 2014Journal of Systems Science & Complexity2014,27,6:0
7In situ magnetometry study on the origin of anomalously capacity in transition metal sulfides显示文摘Cobalt sulfides are considered as promising candidates for lithium-ion battery(LIB)anode materials with high energy densities.Their energy storage mechanism is widely understood to involve the traditional intercalation and conversion reaction.However,these conventional mechanisms are unable to explain the storage capacities of certain materials which exceed the theoretical limit.Here,utilizing advanced in situ magnetometry to detect the magnetization evolution of Co_(1-x) S LIBs in real time,it is demonstrated that the Co-catalytic lithium storage process and interfacial space charge storage mechanism are strongly related to the additional capacity of cobalt sulfides.During discharge,a Co/Li_(2) S interface is formed,wherein the Co nanoparticles and Li_(2) S could store a large amount of polarized electrons Li^(+),respectively.Subsequently,the electrons stored in Co are transferred to the polymeric film,forming radical anions and contributing extra capacity.These findings reveal the charge storage mechanisms of transition metal sulfides and highlight the critical role of magnetic testing in the investigation of energy storage mechanisms.Yan Liu Yuanyuan Han Shuxuan Liao Fangchao Gu Hengjun Liu Xixiang Xu Zhiqiang Zhao Xiancheng Sang Qinghao Li Weijin Kong Qiang Li 2023ChemPhysMater2023,2,3:0
8Enhanced activation of peroxymonosulfate by Fe/N co-doped ordered mesoporous carbon with dual active sites for efficient removal of m-cresol显示文摘The novel Fe-N co-doped ordered mesoporous carbon with high catalytic activity in m-cresol removal was prepared by urea-assisted impregnation and simple pyrolysis method.During the preparation of the Fe-NC catalyst,the complexation of N elements in urea could anchor Fe,and the formation of C3N4during urea pyrolysis could also prevent migration and aggregation of Fe species,which jointly improve the dispersion and stability of Fe.The FeN4sites and highly dispersed Fe nanoparticles synergistically trigger the dual-site peroxymonosulfate (PMS) activation for highly efficient m-cresol degradation,while the ordered mesoporous structure of the catalyst could improve the mass transfer rate of the catalytic process,which together promote catalytic degradation of m-cresol by PMS activation.Reactive oxygen species (ROS) analytic experiments demonstrate that the system degrades m-cresol by free radical pathway mainly based on SO_(4)^(-)·and·OH,and partially based on·OH as the active components,and a possible PMS activation mechanism by 5Fe-50 for m-cresol degradation was proposed.This study can provide theoretical guidance for the preparation of efficient and stable catalysts for the degradation of organic pollutants by activated PMS.Donghui Li Wenzhe Wu Xue Ren Xixi Zhao Hongbing Song Meng Xiao Quanhong Zhu Hengjun Gai Tingting Huang 2024Chinese Journal of Chemical Engineering2024,65,1:0
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