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Protection of steel hooks embedded in glass-fiber-reinforced concrete against macrocell corrosion

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Petroleum research 2024年第2期9卷 317-326页

作者： Husnu Gerengi Muhammed Maraşlı Marziya rizvi Beni Kohen Ismail Taşkıran Corrosion research Laboratory Department of Mechanical EngineeringDuzce University81620DuzceTurkey department of Engineering and Applied Sciences University of BergamoBGItaly Fibrobeton Company r&d center DuzceTurkey department of Chemistry Babasaheb Bhimrao Ambedkar UniversityLucknow226003U.PIndia

This study evaluated the corrosion behavior of steel hooks embedded in GFrC,which were protected by a zinc-rich(96%Zn)galvanizing *** coating provided the hooks with active cathodic protection and a passive physical *** corrosion may form when the anode is smaller than the total steel ***,the steel hooks at the embedment juncture were additionally sealed against water ingress and air exchange using a construction *** study was conducted in three phases in a salt-spray ***,the electrogalvanized steel hooks embedded in GFrC were allowed to freely corrode for 7 *** the second phase,the electrogalvanized steel hooks were painted with the zinc-rich coating and observed over 7 *** the third phase,the steel hooks were protected by the zinc-rich coating together with a primer and construction sealant,and observed over 7 *** evaluate the electrogalvanized hooks and the corrosion products formed,the thickness of the material was *** on the metal surface was inferred by studying the surface morphology of the hooks at various points of contact and after different periods of time.

关键词： Steel rebars Concrete corrosion GFrC Galvanization Sealant

Application and prospects of proteomic technology in inflammation:a review

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Food Science and Human Wellness 2024年第5期13卷 2373-2385页

作者： Senye Wang Yanhai Chu Jiajia Yuan Yiqi Li Zhenhua Liu Xiaoyu Chen Wenyi Kang National r&d center for Edible Fungus Processing Technology Henan UniversityKaifeng 475004China Functional Food Engineering Technology research center Kaifeng 475004China Joint International research Laboratory of Food&Medicine resource Function Kaifeng 475004China College of Agriculture Henan UniversityKaifeng 475004China

Proteomics is a new technology that has been widely applied in the field of life and health *** effectively addresses issues related to the impact of dietary structure on organs,tissues,and cells,as well as the changes in proteins in various organs,tissues,and cells under disease *** differential proteins identified through proteomics can serve as disease biomarkers and target proteins affecting health and can be used for disease diagnosis and health *** this paper,the application of proteomics in the field of infl ammation in recent years was summarized,especially in the therapeutic target and mechanism of action,which opens up a new way for more effective prevention,diagnosis,and treatment of inflammation,and provides medical protection for human life and health.

关键词： Proteomics technology Inflammation Biomarkers Potential target Signaling pathway

A vision system based on CNN-LSTM for robotic citrus sorting Author links open overlay panel

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Information Processing in Agriculture 2024年第1期11卷 14-25页

作者： Yonghua Yu Xiaosong An Jiahao Lin Shanjun Li Yaohui Chen College of Engineering Huazhong Agricultural UniversityWuhan 430070China Key Laboratory of Agricultural Equipment in Mid-Lower Yangtze river Ministry of Agriculture and Rural AffairsWuhan 430070China National r&d center for Citrus Preservation Wuhan 430070China Citrus Mechanization research Base Ministry of Agriculture and Rural AffairsWuhan 430070China

Compared with manual sorting of citrus fruit,vision-based sorting solutions can help achieve higher accuracy and *** this study,we present a vision system based on CNN-LSTM,which can cooperate with robotic grippers for real-time sorting and is readily applicable to various citrus processing plants.A CNN-based detector was adopted to detect the defective oranges in view and temporarily classify them into corresponding types,and an LSTM-based predictor was used to predict the position of the oranges in a future frame based on image sequential *** fusion of CNN and LSTM networks enabled the system to track defective ones during rotation and identify their true types,and their future path was also predicted which is vital for predictive control of visually guided robotic *** detection accuracy of 94.1%was obtained based on experimental results,and the error for path prediction was within 4.33 pixels 40 frames *** average time to process a frame was between 28 and 62 frames per second,which also satisfied real-time *** results proved the potential of the proposed system for automated citrus sorting with good precision and efficiency,and it can be readily extended to other fruit crops featuring high versatility.

关键词： deep learning Long short-term memory Vision system Online citrus sorting Path prediction

mtdNA-triggered pH response signal-amplified fluorescent probe for multiple cell discrimination

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Chinese Chemical Letters 2024年第3期35卷 363-368页

作者： Tianping Xia Yanxian Hou Zhuoran Xia Gengwen Chen Peichen Tang Jiangli Fan Xiaojun Peng State Key Laboratory of Fine Chemicals Frontiers Science Center for Smart Materials Oriented Chemical EngineeringDalian University of TechnologyDalian 116024China Hematology reagent r&d department Mindray Bio-medical Electronics Co.Ltd.Shenzhen 518132China research Institute of dalian University of Technology in Shenzhen Shenzhen 518057China

developing fluorescence probes with multiple responses has vital significance but remains ***,for the first time,we present a mitochondrial dNA(mtdNA)-triggered pH response signalamplified fluorescent probe(QCY-dBT)for multiple cell *** probe exhibited a large stokes shift(229 nm),excellent dNA selectivity over rNA,and ultrasensitivity of detection limit(dL;74.0 ng/mL).Thus,QCY-dBT was successfully applied to analyze multiple human peripheral blood cells and visualize mtdNA in healthy and apoptotic *** the tumor acidic environment(pH 6.0–7.0),the absorbance of QCY-dBT at 436 nm increased,and the fluorescence signal(665 nm)was amplified by mtdNA,which enabled the direct observation of tumor *** study provides help in designing smart probes with multiple responses for efficient abnormal cell detection.

关键词： Fluorescence probe Mitochondrial dNA pH response Peripheral blood cells Multiple cell detection

Study on dynamic Characteristics of Superconducting Electrodynamic Maglev Train

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Journal of Harbin Institute of Technology(New series) 2024年

作者： Xiaonong Wang Jingyu Huang Yue Fei Cheng Zhen National Maglev Transportation Engineering r&d center， Tongji University Chengdu Hangli (Group) Industrial Co.， Ltd

This study considers a superconducting electrodynamic maglev train of MLX01 type as the research object. The characteristics of the electromagnetic spring coefficient of a single bogie under different magnetomotive force of the superconducting coil (MF) and standard air gap (Sag) were explored. In view of the small electromagnetic damping， a passive damping control strategy and an active damping control strategy were designed to increase the electromagnetic damping force between the superconducting coil and ground coil. Combined with the coupling numerical model of a single bogie， the vibration characteristics of the bogie in different directions with different damping control strategies were studied when the Sag and MF were fixed. The results can provide important theoretical support for stable operation control of maglev trains.

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Comparative assessment of the frying efficiency of standard and low linolenic rapeseed oils: Principal Component Analysis (PCA)

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Food and Health 2024年第4期6卷 1-9页

作者： Ming-Ming Hu Chuan-Qi Zhang Xin-Yu Wu National r&d center for Freshwater Fish Processing College of Life ScienceJiangxi Normal UniversityNanchang 330022China

In this research,the performance of regular rapeseed oil(rSO)and modified low-linolenic rapeseed oil(LLrO)during frying was assessed using a frying procedure that commonly found in fast-food *** physicochemical attributes of these oils were *** and LLrO differed for initial linolenic acid(12.21%vs.2.59%),linoleic acid(19.15%vs.24.73%).After 6 successive days frying period of French fries,the ratio of linoleic acid to palmitic acid dropped by 54.49%in rSO,higher than that in LLrO(51.54%).The increment in total oxidation value for LLrO(40.46 unit)was observed to be significantly lower than those of rSO(42.58 unit).The changes in carbonyl group value and iodine value throughout the frying trial were also lower in LLrO compared to *** formation rate in total polar compounds for LLrO was 1.08%per frying day,lower than that of rSO(1.31%).In addition,the formation in color component and degradation in tocopherols were proportional to the frying time for two frying ***,a longer induction period was also observed in LLrO(8.87 h)compared to rSO(7.68 h)after frying ***,LLrO exhibited the better frying stability,which was confirmed by principal component analysis(PCA).

关键词： frying rapeseed oil frying oil frying stability principal component analysis

Field stabilization of pulse duration in a hundredfemtosecond level

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CHINESE OPTICS LETTErS 2024年第8期22卷 081406-081406页

作者： Liu, runmin Wu, Yong Pu, Guoqing Cheng, Jiayang Mu, Huan Liu, Bowen Yi, Lilin Hu, Minglie Tianjin Univ Sch Precis Instruments & Optoelect Engn Key Lab Optoelect Informat Sci & Technol Minist EducUltrafast Laser Lab Tianjin 300072 Peoples R China Shanghai Jiao Tong Univ Sch Elect Informat & Elect Engn State Key Lab Adv Commun Syst & Networks Shanghai 200240 Peoples R China AIOPTICS Co Ltd R&D Ctr Shanghai 200240 Peoples R China

Pulse duration is considered as one of the most important characteristics of high-power femtosecond lasers. However, pulses output from the laser system are susceptible to ambient changes and manifest the instability of pulse durations in an open environment. In this paper, incorporating the algorithmic framework of the improved stochastic hill-climbing search and incremental proportional-integral controller, temperature-induced fluctuations of pulse duration can be effectively compensated by an automatic feedback control in an all-fiber chirped-pulse amplification system. In the experiment, sub-hundred femtosecond fluctuation of pulse duration is introduced to verify the performance robustness of the proposed pulse-duration feedback control (PdFC). The stability of pulse duration is obviously higher than the case without the feedback control, and the peak-to-peak fluctuation of pulse duration is reduced to 6.5%. Furthermore, the robust switching between different pulse durations proves the versatility of the PdFC. We expect that the proposed feedback control method could provide a novel insight into high-power femtosecond lasers widely applied in fundamental researches and industrial fields.

关键词： fiber amplifier femtosecond laser pulse-duration feedback control LASEr AMPLIFICATION

Co-aromatization of methane and hexane over Pt encapsulated in ZSM-5 zeolite and the electronic effect of K promoters

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Science China Chemistry 2024年第3期67卷 1017-1027页

作者： Bei Liu Fan Wang Xiaomeng dou Pengfei Li Hongwei Xiang Yong Yang Peng He State Key Laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001China department of Chemistry Tsinghua UniversityBeijing 100084China National Energy r&d center for Coal to Liquid Fuels Synfuels China Technology Co.Ltd.Beijing 101407China University of Chinese Academy of Sciences Beijing 101408China Leibniz-Institut für Katalyse e.V.an der Universitat rostock Rostock 18059Germany

The co-aromatization of methane with higher hydrocarbons represents a promising route to valorize methane, an abundant but underexploited carbon resource. In this study, we elucidate a novel approach to enhance the catalytic co-aromatization of hexane and methane by confining Pt within zeolite catalysts and modulating its electron density. Our findings show that encapsulating Pt within MFI structure is pivotal for activating the feedstock and fostering the formation of aromatic products. Interaction between K atoms and the silanol nest forms siloxy groups which are critical for the stabilization of Pt species. Tuning the K content in PtSn@MFI catalysts adeptly alters the electronic configuration of Pt clusters. This modification is corroborated by infrared and X-ray photoelectron spectroscopy analysis, and density functional theory calculations. remarkably, the catalyst with 0.8 wt% K exhibits an optimal Pt electron density, driving its superior efficacy in the co-aromatization reaction, converting 0.78 mol of methane for each mole of hexane processed. By employing ~(13)C isotopic labeling and solid-state NMr studies, we demonstrate the participation of methane in the adsorbed species inside the zeolite channel and its incorporation to the benzyl site of the substitute group and phenyl rings in aromatic compounds, underscoring the importance of Pt encapsulation.

关键词： Pt encapsulation MFI zeolite methane activation co-aromatization ^(13)C solid-state NMr

Modified electronic structure and enhanced hydroxyl adsorption make quaternary Pt-based nanosheets efficient anode electrocatalysts for formic acid-/alcohol-air fuel cells

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Journal of Energy Chemistry 2024年第5期92卷 142-150页

作者： Fengling Zhao Qiang Yuan Siyang Nie Liang Wu Xun Wang State-Local Joint Laboratory for Comprehensive Utilization of Biomass Center for R&D of Fine ChemicalsCollege of Chemistry and Chemical EngineeringGuizhou UniversityGuiyang 550025GuizhouChina Key Lab of Organic Optoelectronics&Molecular Engineering Tsinghua UniversityBeijing 100084China School of Chemistry and Chemical Engineering Shanghai Jiao Tong UniversityShanghai 200240China

Surface/interface engineering of a multimetallic nanostructure with diverse electrocatalytic properties for direct liquid fuel cells is desirable yet ***,using visible light,a class of quaternary Pt_(1)Ag_(0.1)Bi_(0.16)Te_(0.29)ultrathin nanosheets is fabricated and used as high-performance anode electrocatalysts for formic acid-/alcohol-air fuel *** modified electronic structure of Pt,enhanced hydroxyl adsorption,and abundant exterior defects afford Pt_(1)Ag_(0.1)Bi_(0.16)Te_(0.29)/C high intrinsic anodic electrocatalytic activity to boost the power densities of direct formic acid-/methanol-/ethanol-/ethylene glycol-/glycerol-air fuel cells,and the corresponding peak power density of Pt_(1)Ag_(0.1)Bi_(0.16)Te_(0.29)/C is respectively 129.7,142.3,105.4,124.3,and 128.0 mW cm^(-2),considerably outperforming Pt/*** in situ Fourier transform infrared reflection spectroscopy reveals that formic acid oxidation on Pt_(1)Ag_(0.1)Bi_(0.16)Te_(0.29)/C occurs via a CO_(2)-free direct *** functional theory calculations show that the presence of Ag,Bi,and Te in Pt_(1)Ag_(0.1)Bi_(0.16)Te_(0.29)suppresses CO^(*)formation while optimizing dehydrogenation steps and synergistic effect and modified Pt effectively enhance H_(2)O dissociation to improve electrocatalytic *** synthesis strategy can be extended to 43 other types of ultrathin multimetallic nanosheets(from ternary to octonary nanosheets),and efficiently capture precious metals(i.e.,Pd,Pt,rh,ru,Au,and Ag)from different water sources.

关键词： Pt-based nanosheets Modifiedelectronic structure Enhanced hydroxyl adsorption Formicacidand alcohol oxidation direct liquid fuel cells