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Application of ARIMA-RTS optimal smoothing algorithm in gas well production prediction

Petroleum 2022年第2期8卷 270-277页

作者： Yonggang Duan Huan Wang Mingqiang Wei linjiang tan Tao Yue School of Petroleum and Natural Gas Engineering Southwest Petroleum UniversityChengdu610500China School of Mechanical and Electrical Engineering Southwest Petroleum UniversityChengdu610500China

Gas field production forecast is an important basis for decision-making in the gas *** to accurately predict the dynamic production during gas field development is an important content of reservoir engineering *** numerical simulation is the most common method for predicting oil and gas ***,it requires a lot of data to build an accurate geological model which is tedious and *** present,many scholars have used machine learning and data mining methods to predict oil and gas production,but they have not considered whether the use of increasing production measures will affect the predicted ***,ARIMA-RTS optimal smooth algorithm is the first applied to establish the prediction model of gas well *** to the historical production data,the model is processed,the production differential autoregressive integral moving average(ARIMA)model in time series is established,then ARIMA model is combined with RTS(Rauch Tung Striebel)smoothing,and the production prediction model is *** smoothing algorithm is an enhanced version of Kalman *** measurements are firstly processed by the forward filter,and then,a separate backward smoothing pass is used for obtaining the smoothing *** correctness of ARIMA-RTS model was verified with the actual production *** results show that the prediction based on ARIMA-RTS model can accurately reflect the production performance of gas *** method can effectively reduce the error caused by stimulation when *** using the ARIMA-RTS model and the ARIMA-Kalman model to predict the production of the same gas well,the prediction accuracy of ARIMA-RTS model is higher than that of ARIMA-Kalman model in production wells with *** with that of the ARIMA-Kalman model,the mean relative error fitted by the ARIMA-RTS model is reduced by 46.3%,and the relative mean square error is reduced by 56.48%.ARIMA-RTS optimal smooth algor

关键词： Production forecasting ARIMA RTS Kalman filter

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Ytterbium modified birnessite MnO_(2) for improving deep oxidation of toluene

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Journal of Rare Earths 2024年第4期42卷 668-675页

作者： linjiang Sun Yan Cheng Yujie Liu Can Yi Faculty of Geosciences and Environmental Engineering Southwest Jiaotong UniversityChengdu611756China

A series of rare earth metals modified birnessite manganese dioxides(RE-Mn)was synthesized by hydrothermal method and their catalytic degradation of toluene was ***-Mn shows the best toluene oxidation activity with the conversion of T50%and T99%at 196 and 226℃,*** physiochemical characterizations identified that the high catalytic performance and excellent stability of Yb-Mn are mainly associated with its higher molar ratios of Mn^(4+)/Mn^(3+),more lattice oxygen(Olatt),and better mobility of surface adsorbed oxygen(O_(ads)).Moreover,it is confirmed that introduction of Yb into birnessite MnO_(2) facilitates the production of acetic acid at lower *** results can aid the design of high-efficiency manganese oxide catalysts for the catalytic combustion of VOCs.

关键词： Manganese oxide Rare earth metal doping Toluene Catalytic combustion

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Genes & Diseases 2024年第1期11卷 367-381页

作者： Yunchao Zhang Jiayu tang Cheng Wang Qinxiu Zhang Anqi Zeng linjiang Song School of Medical and Life Sciences Chengdu University of Traditional Chinese MedicineChengduSichuan 611137China Institute of Translational Pharmacology and Clinical Application Sichuan Academy of Chinese Medical ScienceChengduSichuan 610041China School of Pharmacy Chengdu University of Traditional Chinese MedicineChengduSichuan 611137China

The incidence and mortality rates of cancer are increasing every year worldwide but the survival rate of cancer patients is still ***,it is necessary to further elucidate the molecular mechanisms involved in tumor development and drug resis-tance to improve cancer cure or survival *** recent years,autophagy has become a hot topic in the field of oncology research,which plays a double-edged role in tumorigenesis,pro-gression,and drug ***,long non-coding RNA(lncRNA)has also been shown to regulate autophagy,and the two-sided nature of autophagy determines the dual regulatory role of autophagy-related IncRNAs(ARlncRNAs).Therefore,ARlncRNAs can be effective ther-apeutic targets for various ***,the high abundance and stability of ARlncR-NAs in tumor tissues make them promising *** this review,we summarized the roles and mechanisms of ARlncRNAs in tumor cell proliferation,apoptosis,migration,invasion,drug resistance,angiogenesis,radiation resistance,and immune *** addition,we described the clinical significance of these ARlncRNAs,including as biomarkers/therapeutic targets and their association with clinical drugs.

关键词： Apoptosis Autophagy Biomarker Cancer Drug resistance LncRNA

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Population genetic insights into the conservation of common walnut(Juglans regia)in Central Asia

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Plant Diversity 2024年第5期46卷 600-610页

作者： linjiang Ye Robabeh Shahi Shavvon Hailing Qi Hongyu Wu Pengzhen Fan Mohammad Nasir Shalizi Safiullah Khurram Mamadzhanov Davletbek Yerlan Turuspekov Jie Liu CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201YunnanChina Key Laboratory of Plant Resources and Biodiversity of Jiangxi Province Jingdezhen UniversityJingdezhen 333400JiangxiChina Germplasm Bank of Wild Species&Yunnan Key Laboratory of Crop Wild Relatives Omics Kunming Institute of BotanyChinese Academy of SciencesKunming 650201YunnanChina Department of Biology Faculty of ScienceYasouj UniversityYasouj 75918-74934Iran University of Chinese Academy of Sciences Beijing 100049China Department of Forestry and Environmental Resources North Carolina State UniversityRaleighNC 27695United States Department of Forestry and Natural Resources Faculty of AgricultureKabul UniversityKabul D-1006Afghanistan National Academy of Science of the Kyrgyz Republic Jalal-Abad Scientific CenterJalal-Abad 715600Kyrgyzstan Laboratory of Molecular Genetics Institute of Plant Biology and BiotechnologyAlmaty 050040Kazakhstan

The common walnut(Juglans regia)is one of the most economically important nut trees cultivated *** its importance,no comprehensive evaluation of walnut tree population genetics has been undertaken across the range where it originated,Central *** this study,we investigated the genetic diversity and population structure of 1082 individuals from 46 populations across Central *** found moderate genetic diversity of *** across Central Asia,with 46 populations clustered into three groups with a weak relationship between genetic and geographic *** findings reveal that the western Himalaya might be the core region of common walnut genetic diversity in Central Asia and that,except for two populations in Gongliu Wild Walnut Valley,humans might have introduced walnut populations to Xinjiang,*** observed distribution of the genetic landscape has probably been affected by historical climate fluctuation,breeding system,and prolonged anthropogenic *** propose the conservation of the core genetic diversity resources in the western Himalaya and pay special attention to populations from Gongliu in *** findings enhance our understanding of the genetic variation throughout the distribution range of *** in Central Asia,which will provide a key prerequisite for evidence-based conservation and management.

关键词： Central Asia Genetic diversity Germplasm management Gongliu wild walnut valley Juglans regia Western Himalaya

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Synchronization of Drive-Response Networks With Delays on Time Scales

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IEEE/CAA Journal of Automatica Sinica 2024年第4期11卷 1063-1065页

作者： Yanxia tan Zhenkun Huang the School of Science Jimei UniversityXiamen 361021China

Dear Editor,This letter deals with the synchronization in drive-response networks with discrete and distributed delays on time *** on the theory of calculus on time scales,Lyapunov functional method and inequality technique,we obtain new sufficient conditions to ensure synchronization criteria which are dependent on boundedness of grainness but independent of the types of *** simulations are given to illustrate the effectiveness of our new results.

关键词： inequality letter boundedness

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Influence of ambient temperature on the CO_(2)emitted of light-duty vehicle

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Journal of Environmental Sciences 2024年第6期140卷 59-68页

作者： Dan tan Yachao Wang Jianwei tan Jiachen Li Changyu Wang Yunshan Ge School of Mechanical Engineering Beijing Institute of TechnologyBeijing 100081China

Because of global warming,people have paid more attention to greenhouse gas emitted by *** quantify the impact of temperature on vehicle CO_(2)emissions,this study was conducted using the world light vehicle test cycle on two light-duty E10 gasoline vehicles a ambient temperatures of-10,0,23,and 40℃,and found that CO_(2)emission factors of Vehicle1 in the low-speed phase were 22.07%and 20.22%higher than those of Vehicle 2 at cold star and hot start under-10℃.The reason was vehicle 1 had a larger displacement and more friction pairs than vehicle *** was the highest CO_(2)emission at the low-speed phase due to low average speed,frequent acceleration,and *** CO_(2)temperature factor and the ambient temperature had a strong linear correlation(R2=0.99).According to CO_(2)temperature factors and their relationships,CO_(2)emission factors of other ambien temperatures could be calculated when the CO_(2)emission factor of 23℃was obtained,and the method also could be used to obtain the CO_(2)temperature factors of different *** separate the effect of load setting and temperature variation on CO_(2)emission quantitatively a method was *** results showed that the load setting was dominant for the CO_(2)emission *** with 23℃,the CO_(2)emission for vehicle 1 caused by load setting variation were 62.83 and 47.42 g/km,respectively at-10 and 0℃,while those fo vehicle 2 were 45.01 and 35.63 g/km,respectively.

关键词： CO_(2)emission Ambient temperature E10 gasoline Light-duty vehicle WLTC

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Exploring the functional roles of small-molecule metabolites in disease research:Recent advancements in metabolomics

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Chinese Chemical Letters 2024年第8期35卷 93-100页

作者： Aolei tan Xiaoxiao Ma Department of Precision Instrument Tsinghua UniversityBeijing 100084China

Metabolism encompasses a series of intricate biochemical processes that are vital for the sustenance of life in ***,an essential scientific discipline,is a field of study within the broader domain of systems biology that focuses on the comprehensive analysis of small molecules,known as metabolites including lipids,coenzymes,etc.,which are synthesized during *** the contin-uous development of metabolomics,the multiple biological functions of metabolites are constantly being discovered,encompassing signal transduction and enzyme stimulation,while concurrently exhibiting as-sociations with afflictions like cancer and *** comprehension of metabolite functionalities and their intricate interplay with disease conditions assumes paramount importance in both disease-focused research endeavors and the development of diagnostic *** scholarly exposition undertakes an ex-tensive review of recent advancements in the investigation of functional roles assumed by metabolites,with specific emphasis on metabolites in lipid synthesis,glucose metabolism and exogenous metabolites.

关键词： Metabolites Small molecules Biological functions Physiological processes Diseases

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Best Paper Award 2022

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Building Simulation 2024年第1期17卷 1-2页

作者： Gang tan College of Civil Engineering and Architecture Zhejiang University HangzhouZhejiang 310058China

I am pleased to announce that the following paper has been awarded the Best Review Paper 2022,which stands out from the 24 review papers published by Building Simulation from 2018(Volume 11)to 2022(Volume 15):Yuejing Zhao&Bin Zhao."Emissions of air pollutants from Chinese cooking:A literature review."Building Simulation,2018,11(5):977-995.

关键词： cooking stands award

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Preface to the Special Issue:AI Applications in Atmospheric and Oceanic Science:Pioneering the Future(Part I)

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Advances in Atmospheric Sciences 2024年第7期41卷 1279-1280页

作者： Zhemin tan Key Laboratory of Mesoscale Severe Weather Ministry of Educationand School of Atmospheric SciencesNanjing UniversityNanjing 210023China

As AI continues to establish itself as a cornerstone technology across various industries and scientific disciplines,its profound impact on atmospheric and oceanic science is becoming increasingly *** advantages of AI in surmounting obstacles within our field are undeniable,as evidenced by breakthroughs in weather forecasting(e.g.,Bi et al.,2023),climate prediction(e.g.,Ham et al.,2019),AI-based parameterization schemes(e.g.,Rasp et al.,2018;Wang and tan,2023),and *** the transformative potential of AI in atmospheric and oceanic science,this special issue endeavors to explore the extensive applications of AI in our domain.

关键词： weather forecasting prediction

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Amorphous hybrid tungsten oxide–nickel hydroxide nanosheets used as a highly efficient electrocatalyst for hydrogen evolution reaction

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Nano Research 2024年第4期17卷 2499-2508页

作者： Chao Lyu Chenghai Dai Yiwei tan State Key Laboratory of Materials-Oriented Chemical Engineering School of Chemistry and Chemical EngineeringNanjing Tech UniversityNanjing 211816China

There are more challenges for alkaline hydrogen evolution reaction(HER)via simultaneously expediting the electron-coupled water dissociation process(Volmer step)and the following electrochemical H_(2) desorption(Heyrovsky step).Hybrid amorphous electrocatalysts are highly desirable for efficient hydrogen evolution from water-alkali electrolyzers due to the bifunctionality for the different elementary steps of HER and optimal interactions with water molecules and the reactive hydrogen intermediates(Had).Herein,the synthesis of amorphous hybrid ultrathin(tungsten oxide/nickel hydroxide)hydrate(a-[WO_(3)/Ni(OH)_(2)]·0.2H_(2)O)nanosheets on nickel foam(NF)for efficient alkaline HER is *** structural and composition features of a-[WO_(3)/Ni(OH)_(2)]·0.2H_(2)O are characterized in *** resulting a-[WO_(3)/Ni(OH)_(2)]·0.2H_(2)O/NF electrocatalyst with the synergistic effect of both hybrid components for the HER elementary steps shows greatly improved the activity and durability for the HER with a low overpotential of-41 and-163 mV at-10 and-500 mA·cm^(-2),respectively,a Tafel slope as low as-72.9 mV·dec^(-1),and long-term stability of continuous electrolysis for at least 150 h accompanying by inappreciable overpotential change in 1 M *** the hybrid a-[WO_(3)/Ni(OH)_(2)]·0.2H_(2)O,Ni(OH)_(2) and WO_(3) moieties are separately responsible for accelerating dissociative adsorption of water and weakening Had adsorption strength,which is beneficial to the improvement of the alkaline HER activity.

关键词： amorphous nanomaterial bimetallic electrocatalyst tungsten oxide ultrathin nanosheet hydrogen evolution reaction

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