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In-situ construction of grass-like hybrid architecture responsible for extraordinary corrosion performance: Experimental and theoretical approach

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nano Materials Science 2024年第1期6卷 44-59页

作者： t.Suhartono F.Hazmatulhaq y.Sheng A.Chaouiki M.P.Kamil y.G.Ko Materials Electrochemistry Group School of Materials Science and EngineeringYeungnam UniversityGyeongsan38541Republic of Korea Research Center for Advanced Materials National Research and Innovation Agency(BRIN)South TangerangBanten15314Indonesia

Despite the engineering potential by the co-existence of inorganic and organic substances to protect vulnerable metallic materials from corrosive environments,both their interaction and in-situ formation mechanism to induce the nature-inspired composite remained less *** present work used three distinctive mercaptobenzazole(MB)compounds working as corrosion inhibitors,such as 2-mercaptobenzoxazole(MBo),2-mercaptobenzothiazole(MBt),and 2-mercaptobenzimidazole(MBI)in a bid to understand how the geometrical structure arising from o,S,and n atoms affected the interaction toward inorganic *** compounds that were used here to control the corrosion kinetics would be interacted readily with the pre-existing Mgo layer fabricated by plasma *** phenomenon triggered the nucleation of the root network since MB compounds were seen to be adsorbed actively on the defective surface through the active sites in MB ***,the molecule with twin donor atoms adjacent to the mercapto-sites affected the facile growth of the grass-like structures with‘uniform’distribution via molecular self-assembly,which showed better corrosion performance than those with having dissimilar donor atoms with the inhibition efficiency(η)of 97%*** formation mechanism underlying nucleation and growth behavior of MB molecule was discussed concerning the theoretical calculation of density functional theory.

关键词： nature-inspired composite organic-inorganic interaction Corrosion inhibitor Density functional theory Electrochemistry

Localization for mixed near-field and far-field sources under impulsive noise

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Journal of Systems Engineering and Electronics 2024年第2期35卷 302-315页

作者： GAo Hongyuan ZHAnG yuze DU ya’nan CHEnG Jianhua CHEn Menghan College of Information and Communication Engineering Harbin Engineering UniversityHarbin 150001China College of Intelligent Systems Science and Engineering Harbin Engineering UniversityHarbin 150001China

In order to solve the problem that the performance of traditional localization methods for mixed near-field sources(nFSs)and far-field sources(FFSs)degrades under impulsive noise,a robust and novel localization method is *** eliminating the impacts of impulsive noise by the weighted out-lier filter,the direction of arrivals(DoAs)of FFSs can be estimated by multiple signal classification(MUSIC)spectral peaks *** on the DoAs information of FFSs,the separation of mixed sources can be ***,the estimation of localizing parameters of nFSs can avoid two-dimension spectral peaks search by decomposing steering *** Cramer-Rao bounds(CRB)for the unbiased estimations of DoA and range under impulsive noise have been *** experiments verify that the proposed method has advantages in probability of successful estimation(PSE)and root mean square error(RMSE)compared with existing localization *** can be concluded that the proposed method is effective and reliable in the environment with low generalized signal to noise ratio(GSnR),few snapshots,and strong impulse.

关键词： source localization far-field source(nFS) near-field source(FFS) impulsive noise Cramer-Rao bound(CRB)

Current State of Energy Production in Cameroon and Projection for 2035

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Journal of Power and Energy Engineering 2024年第8期12卷 47-69页

作者： martial Camille ngono Benoit ndzana national Advanced School of Engineering University of Yaounde I Yaounde Cameroon

the low electricity supply rate is a major cause of underdevelopment in Cameroon. to address this issue, Cameroon outlined a strategy in 2003 aiming for a production capacity of 3000 MW by 2020. However, by 2020, production had only reached 1040 MW, leading Cameroon to devise a new national energy sector development strategy targeting 5000 MW by 2035. this paper provides an overview of the current state of energy production and projects future output by 2035. Scientific articles and investigative reports on energy production in Cameroon have enabled an assessment of the current electrical energy production. the 2035 production estimate is based on the Energy Sector Development Projects (PDSEn) report in Cameroon. the current production is estimated at around 1600 MW. Considering the ongoing construction of power plants, future projects, and financing delays, achieving the 5000 MW goal by 2035 appears challenging. nonetheless, diversifying energy production sources could bring Cameroon closer to this target.

关键词： Energy Production Cameroon Water Resources Hydro Power Electricity Supply Energy Capacity

Effect of Cr_(2)o_(3) on properties of Cao-Sio_(2)-Fe_(t)o-Mgo system and dissolution behavior of lime

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Journal of Iron and Steel Research International 2024年第4期31卷 870-881页

作者： Shan-nan Li Jian-li Li yue yu Hang-yu Zhu the State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan 430081HubeiChina Hubei Provincial Key Laboratory for new Processes of Ironmaking and Steelmaking Wuhan University of Science and TechnologyWuhan 430081HubeiChina Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and TechnologyWuhan 430081HubeiChina

the productivity of the chrome-containing semi-steel converter smelting process is directly affected by the slag-forming speed during the converter preliminary *** effects of Cr_(2)o_(3) content on the physicochemical properties of the Cao-Sio_(2)-Fe_(t)o-Mgo system,such as melting temperature,solidification behavior,mineral composition,and lime dissolution rate,were *** results showed that the slag was an amorphous phase at 1500℃.When Cr_(2)o_(3) was added,Ca(Fe,Mg)Si_(2)o_(6) and spinel were formed in the *** the increase in Cr_(2)o_(3) content,the amount of spinel precipitation increased,and the dendritic Fego_(4) crystal gradually changed into the granular(Fe,Mg)(Fe,Cr)2o_(4) *** the Cr_(2)o_(3) content increased from o to 2.91 wt.%,the melting temperature of the slag rose,and the melting range of the slag expanded slightly,but the lime dissolution rate did not *** the Cr_(2)o_(3) content further increased to 9.09 wt.%,the melting temperature continued to rise,the melting range rapidly expanded,and the lime dissolution rate decreased.

关键词： Cr_(2)o_(3) Vanadium-titanium magnetite Converter Slag Lime dissolution

Insight-HXMt Research Progress Since 2023

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空间科学学报 2024年第4期44卷 643-667页

作者： ZHAnG Shu ZHAnG Shuang-nan Key Laboratory for Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049

Since the launch in June 2017,Insight-HXMt has been in service smoothly in orbit and particularly productive in 2023 and *** a total number of 238 papers published so far based on Insight-HXMt data,63 were published in 2023,and 32 in the early 2024(till 2024 April),accounting for 40%of the *** studies cover a variety of scientific subjects including the basic properties of black holes and neutron stars,the outburst of accreting black hole and neutron star X-ray binaries,thermal nuclear burst probes,isolated pulsars,quasi periodical oscillations,cyclotron resonant scattering features,fast radio bursts and gamma-ray bursts,*** paper introduces the overall progress with focus on some potential breakthroughs.

关键词： Insight-HXMt Black hole neutron star outburst

A multiscale adaptive framework based on convolutional neural network: Application to fluid catalytic cracking product yield prediction

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Petroleum Science 2024年第4期21卷 2849-2869页

作者： nan Liu Chun-Meng Zhu Meng-Xuan Zhang Xing-ying Lan State Key Laboratory of Heavy oil Processing China University of Petroleum (Beijing) College of Artificial Intelligence China University of Petroleum (Beijing)

Since chemical processes are highly non-linear and multiscale, it is vital to deeply mine the multiscale coupling relationships embedded in the massive process data for the prediction and anomaly tracing of crucial process parameters and production indicators. While the integrated method of adaptive signal decomposition combined with time series models could effectively predict process variables, it does have limitations in capturing the high-frequency detail of the operation state when applied to complex chemical processes. In light of this, a novel Multiscale Multi-radius Multi-step Convolutional neural network(Msrt net) is proposed for mining spatiotemporal multiscale information. First, the industrial data from the Fluid Catalytic Cracking(FCC) process decomposition using Complete Ensemble Empirical Mode Decomposition with Adaptive noise(CEEMDAn) extract the multi-energy scale information of the feature subset. then, convolution kernels with varying stride and padding structures are established to decouple the long-period operation process information encapsulated within the multi-energy scale data. Finally, a reconciliation network is trained to reconstruct the multiscale prediction results and obtain the final output. Msrt net is initially assessed for its capability to untangle the spatiotemporal multiscale relationships among variables in the tennessee Eastman Process(tEP). Subsequently, the performance of Msrt net is evaluated in predicting product yield for a 2.80 × 10～6 t/a FCC unit, taking diesel and gasoline yield as examples. In conclusion, Msrt net can decouple and effectively extract spatiotemporal multiscale information from chemical process data and achieve a approximately reduction of 30% in prediction error compared to other time-series models. Furthermore, its robustness and transferability underscore its promising potential for broader applications.

关键词： Fluid catalytic cracking Product yield Data-driven modeling Multiscale prediction Data decomposition Convolution neural network

Lipid metabolism-related long noncoding RnAs:A potential prognostic biomarker for hepatocellular carcinoma

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World Journal of Gastroenterology 2024年第33期30卷 3799-3802页

作者： Rui-nan Zhang Jian-Gao Fan Department of Gastroenterology Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai 200092China

the incidence rates of hepatocellular carcinoma(HCC)have increased in recent *** advancements in therapy and early diagnosis improving shortterm prognosis,long-term outcomes remain *** noncoding RnAs(lncRnAs)and lipid metabolism play crucial roles in the development and progression of *** lipid synthesis promotes HCC progression,and lncRnAs can reprogram the expression of lipogenic ***,lipid metabolism-related(LMR)-lncRnAs regulate lipid anabolism,accelerating the onset and progression of *** suggests that LMR-lncRnAs could serve as novel prognostic biomarkers and therapeutic targets.

关键词： Long noncoding RnAs Lipid metabolism Hepatocellular carcinoma Prognosis Biomarker

Artificial intelligence is transforming the research paradigm of environmental science and engineering

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Environmental Science and Ecotechnology 2024年第3期19卷 1-3页

作者： Xu Wang Guangtao Fu nan-Qi Ren State Key Laboratory of Urban Water Resource and Environment School of Civil and Environmental EngineeringHarbin Institute of TechnologyShenzhenShenzhen518055China Centre for Water Systems College of EngineeringMathematics and Physical SciencesUniversity of ExeterExeterEX44QFUnited Kingdom

Artificial intelligence(AI),particularly through its datacrunching powerhouse,machine learning(ML),is revolutionizing the way we approach high-throughput data to obtain underlying mechanisms,characterizing,forecasting,and making evidencebased decisions in many fundamental science ***,a pressing question has emerged in the scientific community in recent years:How can we effectively interpret AI algorithms and gauge their contributions to fundamental research?

关键词： has gauge forecasting

Potential therapeutic role of spermine via Rac1 in osteoporosis:Insights from zebrafish and mice

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Zoological Research 2024年第2期45卷 367-380页

作者： Rui-Xue Jiang nan Hu yu-Wei Deng Long-Wei Hu Hao Gu nan Luo Jin Wen Xin-Quan Jiang Department of Prosthodontics Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai 200011China College of Stomatology Shanghai Jiao Tong UniversityNational Center for StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyShanghai Research Institute of StomatologyShanghai Engineering Research Center of Advanced Dental Technology and MaterialsShanghai 200125China Department of Endodontics Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai Jiao Tong UniversityShanghai 200011China Department of oral and Maxillofacial-Head and neck oncology Shanghai Ninth People’s HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200011China Department of Preventive Dentistry Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai Jiao Tong UniversityShanghai 200011China

osteoporosis(oP)is a prevalent metabolic bone *** drug therapy is essential to prevent bone loss in osteoporotic patients,current treatments are limited by side effects and high costs,necessitating the development of more effective and safer targeted *** a zebrafish(Danio rerio)larval model of osteoporosis,we explored the influence of the metabolite spermine on bone *** showed that spermine exhibited dual activity in osteoporotic zebrafish larvae by increasing bone formation and decreasing bone *** not only demonstrated excellent biosafety but also mitigated prednisolone-induced embryonic neurotoxicity and ***,spermine showcased protective attributes in the nervous systems of both zebrafish embryos and *** the molecular level,Rac1 was identified as playing a pivotal role in mediating the antiosteoporotic effects of spermine,with P53 potentially acting downstream of *** findings were confirmed using mouse(Mus musculus)models,in which spermine not only ameliorated osteoporosis but also promoted bone formation and mineralization under healthy conditions,suggesting strong potential as a bonestrengthening *** study underscores the beneficial role of spermine in osteoporotic bone homeostasis and skeletal system development,highlighting pivotal molecular *** their efficacy and safety,human endogenous metabolites like spermine are promising candidates for new anti-osteoporotic drug development and daily bone-fortifying agents.

关键词： osteoporosis Spermine Rac1 Zebrafish Mice