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In situ sulfur-doped mesoporous tungsten oxides for gas sensing toward benzene series

Chinese Chemical Letters 2024年第7期35卷 502-507页

作者： Yu Deng Yan Liu Yonghui Deng Jinsheng Cheng Yidong Zou Wei luo state Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China Department of Chemistry State Key Laboratory of Molecular Engineering of PolymersShanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsiChEMFudan UniversityShanghai 200433China Department of Polymeric Materials School of Materials Science and EngineeringTongji UniversityShanghai 201804China Henry-Fork school of Food sciences Shaoguan UniversityShaoguan 512005China state Key Lab of Transducer Technology Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China

Benzene series as highly toxic gases have inevitably entered human life and produce great threat to human health and ecological environment,and thus it is distinctly meaningful to monitor benzene series with quickly,real-time and efficient ***,novel sulfur-doped mesoporous WO_(3)materials were synthesized via classical in-situ solvent evaporation induced co-assembly strategy combined with doping engineering,which possessed highly crystallized frameworks,high specific surface area(40.9–63.8 m^(2)/g)and uniform pore size(~18 nm).Benefitting from abundant oxygen vacancy and defects via s-doping,the tailored mesoporous s/m WO_(3)exhibited excellent benzene sensing performance,including high sensitivity(50 ppm vs.48),low detection limit(ca.500 ppb),outstanding selectivity and favorable *** addition,the reduction of band gap resulted from s-doping promotes the carrier migration in the sensing materials and the reaction at the gas–solid sensing *** provides brand-new approach to design sensitive materials with multiple reaction sites.

关键词： Mesoporous materials Benzene series Tungsten oxides sulfur doping Gas sensor

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Trend of storm surge Induced by Typical Landfall super Typhoons During 1975–2021 in the Eastern China sea

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Journal of Ocean University of China 2024年第2期23卷 277-286页

作者： luo Feng WAnG Yi TAO Aifeng sHI Jian WAnG Yongzhi ZHAnG Chi College of Harbour Coastal and Offshore EngineeringHohai UniversityNanjing 210098China nantong Ocean and Coastal Engineering Research Institute Hohai UniversityNantong 226000China Key Laboratory of Ministry of Education for Coastal Disaster and Protection Hohai UniversityNanjing 210098China College of Meteorology and Oceanography National University of Defense TechnologyChangsha 410073China The First Institute of Oceanography MNRQingdao 266061China

Climate change affects the activity of global and regional tropical cyclones(TCs).Among all TCs,typical super typhoons(sTYs)are particularly devastating because they maintain their intensity when landing on the coast and thus cause casualties,economic losses,and environmental *** a 3D tidal model,we reconstructed the typhoon(TY)wind field to simulate the storm surge induced by typical *** TY activity was then analyzed using historical *** showed a downtrend of varying degrees in the annual frequency of sTYs and TCs in the Western north Pacific(WnP)Basin,with a significant trend change observed for TCs from 1949 to 2021.A large difference in the interannual change in frequency was found between sTYs and TCs in the WnP and Eastern China sea(ECs).Along the coast of EC,the frequency of landfall TCs showed a weak downtrend,and the typical sTYs showed reverse micro growth with peak activity in ***,Fujian,and Taiwan were highly vulnerable to the frontal hits of typical *** by climate change,the average lifetime maximum intensity(LMI)locations and landfall locations of typical sTYs in the ECs basin showed a significant poleward migration *** addition,the annual average LMI and accumulated cyclone energy showed an uptrend,indicating the increasing severity of the disaster *** by the typical sTY activity in the ECs,the maximum storm surge area also showed poleward migration,and the coast of north China faced potential growth in high storm surge risks.

关键词： storm surge super typhoons tropical cyclones eastern China sea poleward migration

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Mechanical properties and interfacial characteristics of 6061 Al alloy plates fabricated by hot-roll bonding

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International Journal of Minerals,Metallurgy and Materials 2024年第8期31卷 1890-1899页

作者： Zongan luo Xin Zhang Zhaosong Liu Hongyu Zhou Mingkun Wang Guangming Xie state Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819China

This work aims to investigate the mechanical properties and interfacial characteristics of 6061 Al alloy plates fabricated by hotroll bonding(HRB)based on friction stir *** results showed that ultimate tensile strength and total elongation of the hot-rolled and aged joints increased with the packaging vacuum,and the tensile specimens fractured at the matrix after exceeding 1 ***-equilibrium grain boundaries were formed at the hot-rolled interface,and a large amount of Mg_(2)si particles were linearly precipitated along the interfacial grain boundaries(IGBs).During subsequent heat treatment,Mg_(2)si particles dissolved back into the matrix,and Al_(2)O_(3) film remaining at the interface eventually evolved into *** addition,the local IGBs underwent staged elimination during HRB,which facilitated the interface healing due to the fusion of grains at the *** process was achieved by the dissociation,emission,and annihilation of dislocations on the IGBs.

关键词： 6061 Al alloy hot-roll bonding vacuum mechanical properties interfacial grain boundaries

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A technical survey on mechanism and influence factors for asphalt pavement skid-resistance

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Friction 2024年第5期12卷 845-868页

作者： Xiyin LIU Haoyuan luo Can CHEn Leyi ZHU siyu CHEn Tao MA Xiaoming HUAnG school of Transportation Southeast UniversityNanjing211189China

To explore the research status on mechanism of the skid-resistance for asphalt pavement, the related achievements of the rubber friction, the tire–road contact, and the influence factors were reviewed. The rubber friction was reviewed from the mechanism and rubber friction model. The tire-road contact was studied from the modeling methods, the evaluation methods, and the skid-resistance mechanisms at different conditions. The influence factors of skid-resistance were summarized from different designing processes. This review showed that the appropriate contact or evaluation model should be selected according to the required parameters. Although the finite element method is widely used, the accuracy of the model, the boundary conditions, and the load cases need to be further improved. The optimized aggregates and asphalt binders, reasonable gradation, reasonable geometric design, and strict construction quality control are necessary for good initial skid-resistance. Pavement texture as an important factor affecting skid-resistance should be considered in pavement gradation design, especially for wearing layer technology.

关键词： asphalt pavement rubber friction tire-road contact skid-resistance

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Experimental study on temperature fluctuations on plate surface induced by coaxial-jet flow

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nuclear science and Techniques 2024年第5期35卷 139-153页

作者： Xue-Yao Xiong Zun-Quan Liu Guo-Yan Zhou Xing luo shan-Tung Tu Key Laboratory of Pressure systems and safety(MOE) East China University of Science and TechnologyShanghai 200237China Institute of Thermodynamics Gottfried Wilhelm Leibniz University Hannover30823 GarbsenGermany

In nuclear reactors,temperature fluctuations of fluids may cause fatigue damage to adjacent structures;this is referred to as thermal *** on thermal striping in the upper plenum has mainly focused on fluid *** experimental studies have been reported on solid structures in a fluid field with a coaxial *** study entailed an experimental study of the temperature fluctuations in the fluid and on a plate surface caused by a coaxial *** temperature fluctuations of the fluid and plate surfaces located at different heights were *** cause of the temperature fluctuation was analyzed using a transient temperature *** results show that the mixing of the hot and cold fluids gradually becomes uniform in the positive axial *** average surface temperatures tended to be *** the jet reaches the plate surface,the swing of the jet center,contraction and expansion of the cold jet,and changes in the jet shape result in temperature *** intensity of the temperature fluctuation was affected by the *** attention should be paid when the plate is located at a lower height,and between the hot and cold-fluid nozzles.

关键词： Temperature fluctuation Thermal striping Coaxial jet Thermal mixing The upper plenum of nuclear reactor

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Microstructure,mechanical and fracture properties of friction stir welded 2195 Al-Li alloy joints

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Chinese Journal of Aeronautics 2024年第1期37卷 345-361页

作者： Guangda sUn Weizhao sUn Li ZHOU sanfeng luo Zili ZHAnG Debo LIU Huiqiang WU state Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001China shandong Provincial Key Laboratory of special Welding Technology Harbin Institute of Technology(Weihai)Weihai 264209China Beijing Institute of Astronautical systems Engineering Beijing 100076China

The 8 mm-thick 2195 Al-Li alloy joints were achieved by Friction stir Welding(FsW).The microstructural evolution,temperature-dependent mechanical properties,and fracture properties were *** T1,δ’/β’and θ’precipitates were observed in the Base Metal(BM)and the Heat Affected Zone(HAZ).Most of the precipitates,except for re-precipitated δ’/β’phases,were dissolved in the nugget Zone(nZ).The tensile specimens that failed at cryogenic temperatures(-196℃)had the maximum Ultimate Tensile strength(UTs),and the fracture surface showed the inter-granular fracture *** to those at room temperature(25℃),the decreasing tensile properties at high temperature(180℃)were related to microstructure and strain hardening *** nZ presented the optimal fracture toughness,and the Crack Tip Opening Displacement(CTOD)was mutually dominated by microhardness and grain *** on Fatigue Crack Growth(FCG)rates indicates that the Thermal-Mechanically Affected Zone(TMAZ)exhibited the most superior fatigue resistance performance at stress intensity range below17 MPa.m1/2due to compressive residual stress and the crack closure *** fatigue fracture surfaces reveal that the crack propagation zone was characterized by the striations and secondary ***,inter-granular fracture behavior was responsible for the fastest FCG rates in the nZ.

关键词： Aluminum alloys Friction stir welding Microstructural evolution Mechanical properties Fracture mechanism

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Advances in radiation-induced heart disease diagnosis and treatment

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Radiation Medicine and Protection 2024年第2期5卷 83-89页

作者： Kaixuan Wang Cong Ye Lan luo Chen Yan Department of Laboratory Medicine Affiliated Hospital of Xuzhou Medical UniversityXuzhou 221004China school of Medical Technology Xuzhou Key Laboratory of Laboratory DiagnosticsXuzhou Medical UniversityXuzhou 221004China Department of Rheumatology The Second Affiliated HospitalJiangxi Medical CollegeNanchang UniversityNanchang 330006China

Over the past decades,the survival rates of patients with cancer have significantly increased owing to advancements in cancer treatment *** has become an indispensable treatment modality for thoracic *** it offers benefits in treating or even potentially curing cancer,thoracic radiotherapy exposes neighboring heart tissues to ionizing radiation,elevating the risk of radiation-induced heart disease(RIHD).Despite improvements in radiotherapy techniques that have reduced the incidence of RIHD,complete avoidance of heart radiation exposure remains a *** studies involving atomic bomb survivors and individuals with occupational radiation exposure,even at relatively low doses,have reported a significant increase in RIHD *** pathological mechanisms underlying RIHD have been extensively *** present,imaging techniques and traditional cardiac biomarkers are the primary methods to diagnose RIHD,with ongoing efforts to explore additional promising markers for predicting and monitoring ***,traditional and novel therapeutic strategies are being actively explored to prevent or alleviate *** gained from therapeutic advancements in other organ systems or heart diseases caused by different factors can provide valuable ideas for RIHD *** review discusses the recent advancements in the diagnosis and treatment of RIHD.

关键词： Radiation-induced heart disease Diagnosis Imaging techniques Biomarkers Therapies

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Lipid metabolism analysis in esophageal cancer and associated drug discovery

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Journal of Pharmaceutical Analysis 2024年第1期14卷 1-15页

作者： Ruidi Jiao Wei Jiang Kunpeng Xu Qian luo Luhua Wang Chao Zhao Bionic sensing and Intelligence Center Institute of Biomedical and Health EngineeringShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong518000China Department of Radiation Oncology National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital&Shenzhen HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeShenzhenGuangdong518116China school of Medicine Southern University of Science and TechnologyShenzhenGuangdong518000China University of Chinese Academy of sciences Beijing100049China shenzhen Key Laboratory of Precision Diagnosis and Treatment of Depression Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong518000China

Esophageal cancer is an upper gastrointestinal malignancy with a bleak *** is still being explored in depth due to its complex molecular mechanisms of occurrence and *** play a crucial role in cells by participating in energy supply,biofilm formation,and signal transduction processes,and lipid metabolic reprogramming also constitutes a significant characteristic of malignant *** and more studies have found esophageal cancer has obvious lipid metabolism abnormalities throughout its beginning,progress,and treatment *** inhibition of tumor growth and the enhancement of antitumor therapy efficacy can be achieved through the regulation of lipid ***,we reviewed and analyzed the research results and latest findings for lipid metabolism and associated analysis techniques in esophageal cancer,and comprehensively proved the value of lipid metabolic reprogramming in the evolution and treatment resistance of esophageal cancer,as well as its significance in exploring potential therapeutic targets and biomarkers.

关键词： Lipid metabolism Esophageal cancer Progression Treatment resistance new therapeutic targets

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Construction of MTX-Cs-TMP-nPs nano-drug Delivery system and its Observation on Telomerase Activity of Cervical Cancer Hela Cells

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Chinese Journal of Biomedical Engineering(English Edition) 2024年第1期33卷 27-32,39页

作者： YAn Xiao-shuai luo Chao YAnG Fang The Fifth Hospital of Xianmen Xiamen Fujian 361101China

Objective:To construct methotrexate(MTX)-chitosan(Cs)-chuanxiongmuizine(TMP)nano-delivery system MTX-Cs-TMP-nPs,and to investigate its effect on the telomerase activity of cervical cancer Hela ***:MTX-Cs and MTX-Cs-TMP-nPs were prepared by amide reaction and ionic gel method,and the encapsulation rate and drug loading rate were *** method and TRAP method were used to detect Hela cells and telomerase activity,and to compare the difference of telomerase activity of MTX,MTX-Cs,and MTX-Cs-TMP-nPs on cervical cancer Hela ***:In this study,the total amount of TMP was 150μg,of which the amount of free TMP was(26.46±1.72)μg,the encapsulation rate of TMP was(82.36±0.01)%,and the drug loading was(17.62±0.23)*** activity of Hela cells increased with the extension of time,and the OD value of Hela cell activity(1.24±0.05)was lower than that of the other three groups at 72 h of treatment,and the difference was statistically significant(Pse activity of He La cells in the MTX-Cs-TMP-nPs solution treatment group was(0.23±0.12)%lower than that of the other three groups,with statistically significant difference(Pnclusion:MTX-Cs-TMP-nPs may effectively reduce the activity and telomerase activity of cervical cancer Hela cells,showing its potential anti-cervical cancer effect.

关键词： cervical cancer(CC) Docetaxel MTX telomerase nano-drug delivery system cell cycle

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Lightweight steganography Detection Method Based on Multiple Residual structures and Transformer

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Chinese Journal of Electronics 2024年第4期33卷 965-978页

作者： Hao LI Yi ZHAnG Jinwei WAnG Weiming ZHAnG Xiangyang luo Key Laboratory of Cyberspace situation Awareness of Henan Province nanjing University of Information science & Technology University of science and Technology of China

Existing deep learning-based steganography detection methods utilize convolution to automatically capture and learn steganographic features, yielding higher detection efficiency compared to manually designed steganography detection methods. Detection methods based on convolutional neural network frameworks can extract global features by increasing the network's depth and width. These frameworks are not highly sensitive to global features and can lead to significant resource consumption. This manuscript proposes a lightweight steganography detection method based on multiple residual structures and Transformer(Res Former). A multi-residuals block based on channel rearrangement is designed in the preprocessing layer. Multiple residuals are used to enrich the residual features and channel shuffle is used to enhance the feature representation capability. A lightweight convolutional and Transformer feature extraction backbone is constructed, which reduces the computational and parameter complexity of the network by employing depth-wise separable convolutions. This backbone integrates local and global image features through the fusion of convolutional layers and Transformer, enhancing the network's ability to learn global features and effectively enriching feature diversity. An effective weighted loss function is introduced for learning both local and global features, Bias Loss loss function is used to give full play to the role of feature diversity in classification, and cross-entropy loss function and contrast loss function are organically combined to enhance the expression ability of features. Based on Boss Base-1.01, BOWs2 and ALAsKA#2, extensive experiments are conducted on the stego images generated by spatial and JPEG domain adaptive steganographic algorithms, employing both classical and state-of-theart steganalysis techniques. The experimental results demonstrate that compared to the sRM, sRnet, sia steg net,CsAnet, LWEnet, and sia IRnet methods, the proposed Res

关键词： Q-factor steganography Accuracy Convolution Computational modeling Transform coding Transformers

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