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A review of the development of asphalt foaming technology

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Journal of Road Engineering 2024年第3期4卷 334-347页

作者： Qiang Li Shijie Song Jiaqing Wang Ning Wang Shuai Zhang college of Civil Engineering Nanjing Forestry UniversityNanjing 210037China Jiangsu Zhongxing Maintainance co. Ltd.Nantong 226015China

To comprehensively assess the current state-of-art in asphalt foaming technology, the following four key aspectshave been reviewed systematically: foaming principles, test methods, evaluation indicators, and influencing *** findings reveal that asphalt foaming was primarily driven by the vaporization of water, with deteriorationprocesses including bubble collapse and liquid film drainage. However, the current understanding of asphaltfoaming principles remains limited, primarily due to difficulties in capturing and precisely measuring its microscopic behaviors during asphalt foaming process. Volume changes provided an intuitive means to evaluate theexpansion capacity of asphalt and its foaming stability. Bubble evolution characteristics of foamed asphalt offeredpromising insights into its foaming performance. Traditional ruler and stopwatch-based assessments were beingsuperseded by automated techniques like laser and ultrasonic ranging. Nevertheless, the current measuringequipment still lacks the capability to comprehensively evaluate the foaming effect of asphalt across various dimensions. Asphalt temperature and foaming water consumption significantly affected asphalt foaming performance, and the inclusion of foaming agents typically led to a notable increase in the half life of foamed ***, the interaction between foaming agents and asphalt, as well as the underlying mechanisms affecting thefoaming effect, are still unclear and require further exploration. Future research should primarily focus on thecorrelation between asphalt foaming effect and mixture performance, aiming to guide the practical engineeringapplication of foamed asphalt mixtures and enlarge the advantages of such low-emission and sustainable mixtures.

关键词： Foamed asphalt Foaming mechanism Test methods Evaluation indicators Influencing factors

Tau truncation in the pathogenesis of Alzheimer's disease: a narrative review

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Neural Regeneration Research 2024年第6期19卷 1221-1232页

作者： Dandan Chu Xingyue Yang Jing Wang Yan Zhou Jin-Hua Gu Jin Miao Feng Wu Fei Liu Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products Coinnovation Center of Neuroregeneration Nantong University 2. Department of Pharmacology School of Pharmacy Nantong University 3. Department of Biochemistry and Molecular Biology School of Medicine Nantong University 4. Department of Clinical Pharmacy Affiliated Maternity and Child Health Care Hospital of Nantong University Nantong University 5. Laboratory of Animal Center Nantong University Department of Neurochemistry Inge Grundke-Iqbal Research Floor New York State Institute for Basic Research in Developmental Disabilities

Alzheimer’s disease is characterized by two major neuropathological hallmarks—the extracellular β-amyloid plaques and intracellular neurofibrillary tangles consisting of aggregated and hyperphosphorylated Tau protein. Recent studies suggest that dysregulation of the microtubuleassociated protein Tau, especially specific proteolysis, could be a driving force for Alzheimer’s disease neurodegeneration. Tau physiologically promotes the assembly and stabilization of microtubules, whereas specific truncated fragments are sufficient to induce abnormal hyperphosphorylation and aggregate into toxic oligomers, resulting in them gaining prion-like characteristics. In addition, Tau truncations cause extensive impairments to neural and glial cell functions and animal cognition and behavior in a fragment-dependent manner. This review summarizes over 60 proteolytic cleavage sites and their corresponding truncated fragments, investigates the role of specific truncations in physiological and pathological states of Alzheimer’s disease, and summarizes the latest applications of strategies targeting Tau fragments in the diagnosis and treatment of Alzheimer’s disease.

关键词： Alzheimer's disease cleavage site diagnosis marker neurofibrillary tangles phosphorylation Tau Tau aggregation therapy truncation

Proliferating cell nuclear antigen of Ulva prolifera is involved in the response to temperature stress

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Journal of Oceanology and Limnology 2024年第4期42卷 1227-1241页

作者： Hongyan HE Juanjuan YANG Yuan HE Xiuwen YANG Caiwei FU Dongren ZHANG Jingwei DONG Aurang ZEB Jing QU Songdong SHEN School of Biology&Basic Medical Sciences Soochow UniversitySuzhou 215101China Department of Pathology Affiliated Hospital and Medical School of Nantong UniversityNantong 226001China

Ulva prolifera is the most common specie causative to green tide,and its growth is sensitive to temperature ***,the mechanisms of *** response to temperature stress remain *** this study,high temperature(36℃)stimulus promoted the death of unformed cell wall protoplasts and delayed the division of formed cell wall protoplasts,while low-temperature(4℃)stimulus did not,suggesting that the mechanisms of the response of *** to high and low temperature stresses are *** results show that proliferation-related genes were differentially expressed under high and low-temperature stresses,especially the proliferating cell nuclear antigen(PCNA)and cyclins(CYCs).Subsequently,the interaction between PCNA and Cyclin A was confirmed by co-immunoprecipitation,yeast two-hybrid,and so ***,high-and low temperature stresses induced the expression of PCNA and Cyclin A in varying of degrees,and activated extracellular signal-regulated kinase(ERK)signal *** results suggest,PCNA,Cyclin A,and ERK signal pathway played important roles in the resistance of *** to temperature ***,high-temperature stress induced an increase of miR-2916 in abundance,and exhibiting reverse expression of PCNA;and PCNA was target gene of miR-2916,suggesting that miR-2916 protected *** from high-temperature stress via post-transcriptionally regulation of *** study laid a foundation for understanding the function of PCNA and Cyclin A,moreover,it has a guiding significance to explore the mechanisms of the response to temperature stress from proliferation-related genes regulatory networks in ***.

关键词： UIva prolifera proliferating cell nuclear antigen Cyclin A extracellular signal-regulated kinase microRNA temperature stress

Investigation and improvement of tiny spot defects on hot-dip galvanized automotive steel sheets

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baosteel Technical Research 2024年第2期18卷 32-38页

作者： GE Zhiyong YANG Bo YANG Jiwu baosteel Zhanjiang Iron&Steel co. Ltd.Zhanjiang 524072GuandongChina

The causes of tiny spot defects on the surface of hot-dip galvanized automotive steel sheets were studied using scanning electron microscopy(SEM)and energy dispersive spectrometer(EDS),and effective control measures were *** results show that rubbing against the top roller after galvanizing is easy due to the local thickness of tiny spot defect location coating;therefore,the surface morphology is different from the normal *** kinds of defects,namely zinc slag,small slivers,and pitting,are likely to cause local thickening of the coating after galvanizing,leading to the formation of tiny ***,resolving the three types of defects can effectively control the generation of tiny spot *** them,due to the hereditary nature of the small sliver defect,focusing on its control and supervision is necessary.

关键词： hot-dip galvanizing tiny spot zinc slag pitting small sliver

Effect of fatigue load on the bending tribo-corrosion-fatigue behaviors between the main cable wires

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Friction 2024年第7期12卷 1512-1531页

作者： Bo WANG Dagang WANG Jihong YE Liang TANG Hailang CHONG Wei XU Xinxin ZHANG Jianhao CHEN Haiyan DENG Jie ZHANG Guowen YAO Magd Abdel WAHAB School of Mechatronic Engineering China University of Mining and TechnologyXuzhou 221116China Xuzhou Key Laboratory for Fire Safety of Engineering Structures China University of Mining and TechnologyXuzhou 221116China National Wire Rope Quality Inspection Center Nantong Product Quality Supervision and Inspection InstituteNantong 226011China Jiangsu Langshan Wire Rope co. Ltd.Nantong 226003China School of Mechatronic Engineering Southwest Petroleum UniversityChengdu 610500China School of Civil Engineering Chongqing Jiaotong UniversityChongqing 400074China Soete Laboratory Faculty of Engineering and ArchitectureGhent UniversityZwijnaarde B-9052Belgium

The main cable bent around the saddle of the suspension bridge is subjected to the wind,the vehicle,the bridge’s own weight and the corrosive *** coupling of the three loads and the environments causes the friction,the corrosion,and the fatigue(tribo-corrosion-fatigue)among the wires inside the main *** this paper,a wire bending tribo-corrosion-fatigue test rig was designed and *** effect of fatigue load on the bending friction behaviors between the cable wires in ultrapure water and 3.5%NaCl solution was *** tribological properties and electrochemical corrosion behaviors under different fatigue loading ranges were *** tribo-corrosion-fatigue interaction between the cable wires was quantitatively characterized,and the mechanism of the interaction was *** results demonstrate that the increasing fatigue load exacerbates the coupling damage of the cable wires attributed to the enhanced *** findings carry theoretical importance when assessing the main cable’s deterioration and the load-bearing safety of a suspension bridge.

关键词： bending tribo-corrosion-fatigue interaction parallel steel wires fatigue load

Microstructure and Mechanical Property of the Large Cross-Sectioned Mg-Gd-Y-Zn-Zr Alloy Produced by Small Extrusion Ratio

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Acta Metallurgica Sinica(English Letters) 2024年第6期37卷 999-1006页

作者： Sen Wang Hucheng Pan Caixia Jiang Zhihao Zeng Zhen Pan Weineng Tang Chubin Yang Yuping Ren Gaowu Qin Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education) College of Materials Science and EngineeringNortheastern UniversityShenyang110819China Mg and Mg Alloy Institute Technology CenterBaosteel Metal Co.LtdChina Baowu Steel GroupShanghai200940China Jiangxi Provincial Engineering Research Center for Magnesium Alloy Gannan Normal UniversityGanzhou341000China

In this work,the microstructure and mechanical properties of large cross-sectioned Mg-9Gd-3Y-1.2Zn-0.5Zr(VWZ931)samples produced by the small extrusion ratio has been *** as-extruded VWZ931 sample with diameter of~30 mm can exhibit the high yield strength(YS)of 339 MPa,ultimate tensile strength(UTS)of 387 MPa and elongation of 8.2%,*** peak-aged,the YS and UTS of the Mg samples were significantly increased to 435 MPa and 467 *** small extrusion ratio leads to the low fraction of dynamic recrystallized(DRX)grains in VWZ931 sample,and the texture hardening effect can be fully utilized to achieve high *** combined effect of precipitation strengthening due to the long-period stacking ordered phases and theβ′phase,grain boundary strengthening due to the fine DRX grains,heterogeneous deformation-induced strengthening caused by bimodal microstructure,can together contribute to the high strength of present Mg *** findings can shed light on designing other large-sized Mg wrought alloys with high mechanical performance.

关键词： Mg-RE alloy Mechanical property Bimodal grains Texture hardening

Effect of cooling method on TiN precipitation behavior of high-titanium high-strength steel during solidification

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Journal of Iron and Steel Research International 2024年第7期31卷 1692-1703页

作者： Xue-jian Zhang Guang-wei Yang Yong Wan Yong-hong Wen Chuan-sheng Tang Ming-qi Liu Li-je Tian Key Laboratory of Metallurgical Emission Reduction and Resources Recycling Anhui University of TechnologyMa'anshan 243002AnhuiChina School of Metallurgical Engineering Anhui University of TechnologyMa'anshan 243002AnhuiChina baosteel Central Research Institute Baoshan Iron and Steel Co.Ltd.Shanghai 201999China

Metallographic microscopy,scanning electron microscopy and TiN growth thermodynamic and kinetic equations were used to investigate the morphology,quantity,and size of TiN in the center of high-titanium high-strength steels under different solidification cooling *** results showed that TiN in the center of the experimental steels mainly existed in three forms:single,composite(Al2O3-TiN),and multi-particle *** began precipitating at around 1497℃(solidification fraction of 0.74).From the end of melting to solidification for 180 s,the cooling rates in the center of the experimental steels for furnace cooling,air cooling,refractory mold cooling,and cast iron mold cooling tended to stabilize at 0.17,0.93,1.65,and 2.15℃/s,*** size of TiN in the center of the experimental steel cooled using furnace cooling was mainly concentrated in the 5-15 pm *** contrast,the size of TiN in the center of the experimental steels cooled using air cooling,refractory mold cooling,and cast iron mold cooling were mainly concentrated in the 1-5 pm *** addition,their density of TiN in the center of the experimental steels is signif-icantly higher than that of the furnace-cooled experimental *** and kinetic precipitation models of TiN established predicted the growth size of TiN in a high-titanium high-strength steel when the solidification cooling rates are not below 0.93℃/s.

关键词： High-titanium steel cooling method TiN Thermodynamics Kinetics

Synthesis and microwave absorption performance of heat-treated RF/SiO_(2)aerogels

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Defence Technology（防务技术） 2024年第4期34卷 177-186页

作者： Xinli Ye Hao Yu Kai Zheng Shan Li Xiaomin Ma Bangxiao Mao Junxiong Zhang School of Civil Aviation Northwestern Polytechnical UniversityXi’an 710072PR China Research&Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518057PR China Yangtze River Delta Research Institute of Northwestern Polytechnical University Suzhou 215400PR China National Equipment New Material&Technology(Jiangsu)co. LtdSuzhou 215400PR China Beijing Xinfeng Aerospace Equipment co. LtdBeijing 100854PR China School of Textile and Clothing Nantong UniversityNantong 226019PR China

The well-designed composite with satisfactory electromagnetic microwave absorption at high temperatures remains a serious ***,we fabricated a resorcinol-formaldehyde/silica dioxide composite aerogel(RF/SiO_(2))with a three-dimensional network structure using sol-gel,atmospheric pressure drying technique as well as heat-treated processes to achieve enhanced microwave absorption capabilities in the low frequency *** pristine RF/SiO_(2)aerogel presented a typical micropores structure with a surface area,porous volume,and density of 146.82 m^(2)/g,62.40%,and 0.28 cm^(3)/g,***,the RF/SiO_(2)aerogel showed an effective absorption bandwidth of 3.56 GHz and a minimum reflection loss value of-46.10 d B at 2.25 mm after being heat-treated at 1500°C,while the maximum effective absorption bandwidth was 3.60 GHz at 2.30 *** intricate three-dimensional networks possessed remarkable impedance matching,multiple attenuation mechanisms,interfacial polarization,and dielectric loss,which were attributed to the exceptional ability to absorb electromagnetic *** offered a fresh approach to creating adaptable and effective microwave absorption materials in military defense.

关键词： RF/SiO_(2) Aerogel Heat-treated Microwave absorption

Design and Application of Intelligent control System for Molten Iron Transportation Based on 5G Technology

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Frontiers of Metallurgical Industry

Frontiers of Metallurgical Industry 2024年第2期2卷 21-24页

作者： Borui Wang Logistics branch of baosteel group Xinjiang Bayi Iron&Steel co. Ltd.

Molten transport is an important link in the iron and steel enterprise production,involves many complex factors,artificial management is ***,puts forward a kind of molten iron transport wisdom control system based on 5G technology,which mainly contains the intelligent identification tracking system,equipment status collection information acquisition system,locomotive vehicle terminal system,*** with the analysis of the actual application situation,the system could integrate all the processes and elements of molten iron produc-tion and transportation,realize the integration of operation and management,and also promote the improvement of the turnover efficiency of molten iron tank,reduce the demand for personnel,and reduce the labor cost.

关键词： 5G technology molten iron transportation intelligent control system