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33篇 您的检索式:作者名="Yangming Zhang"
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1Adsorption behavior of phosphate on Lanthanum(Ⅲ) doped mesoporous silicates material显示文摘A series of lanthanum doped meosoporous MCM-41(LaxM41,x is Si/La molar ratio) was prepared by sol-gel method.The surface structure of the materials was investigated with X-ray diffraction and N2 adsorption/desorption technique.The content of La in the materials was determined by ICP.It was found that the La content of La25M41,La50M41 and La100M41 was 7.53%,3.89% and 2.32%,respectively.The phosphate adsorption capacities increased with increasing amount of La incorporation.With 0.40 g La25M41 99.7% phosphate could be removed.The effects of Si/La molar ratio,LaxM41 dose,pH,initial concentration of phosphate solution,co-ions on phosphate adsorption were also evaluated.The phosphate adsorption kinetics of LaxM41 could be well-described by the pseudo second-order model,and Langmuir isotherm fit equilibrium data much better than the Freundlich isotherm.Jianda Zhang Zhemin Shen Wenpo Shan Ziyan Chen Zhijian Mei Yangming Lei Wenhua Wang 2010Journal of Environmental Sciences2010,22,4:18
2Source Rocks for the Giant Puguang Gas Field,Sichuan Basin:Implication for Petroleum Exploration in Marine Sequences in South China显示文摘摘要:详细地球化学研究被进行在巨大的 Puguang 煤气的领域里调查稳固的沥青和烃气体的起源。稳固的沥青的二种类型被认出:低硫在在 Xujiahe 形成和高硫的沙岩水库的沥青满足的满意的、低反射(LSLR ) 固体,高反射(HSHR ) 固体在在更低的三叠纪的 Feixianguan 和上面的二叠的 Changxing 形成的碳酸盐水库的沥青。在上面的三叠纪的 Xujiahe 形成的稳固的沥青与摘录相关很好从上面对在同位素的作文的侏罗记 nonmarine 来源岩石三叠纪浸透并且芳香的部分和 biomarker 分发。在 Feixianguan 和 Changxing 形成的稳固的沥青与摘录从显然不同寒武纪并且志留纪岩石但是在同位素的作文两个都从上面的二叠的来源岩石与摘录显示合理关联浸透并且芳香的部分并且在 biomarker 分发,建议二叠特别上面的二叠的 Longtan 形成是在在在 th 的 Feixianguan 和 Changxing 形成的碳酸盐水库的稳固的沥青的主要来源天然气的化学、同位素的作文显示烃气体的多数从生存于富有腐殖质的有机物发源并且是积累的油的热裂开的产品。这研究显示生存于富有腐殖质的有机物统治的那来源岩石存在在上面二叠并且做了主要贡献到巨大的 Puguang 煤气的地,它在华南在海洋的序列为石油探索有重要牵连。ZOU Huayao HAO Fang ZHU Yangming GUO Tonglou CAI Xunyu LI Pingping ZHANG Xuefeng 2008Acta Geologica Sinica(English Edition)2008,82,3:11
3Long-term joint effect of nutrients and temperature increase on algal growth in Lake Taihu,China显示文摘To study how global warming and eutrophication affect water ecosystems,a multiplicative growth Monod model,modified by incorporating the Arrhenius equation,was applied to Lake Taihu to quantitatively study the relationships between algal biomass and both nutrients and temperature using long-term data.To qualitatively assess which factor was a limitation of the improved model,temperature variables were calculated using annual mean air temperature (AT),water temperature (WT),and their average temperature (ST),while substrate variables were calculated using annual mean total nitrogen (TN),total phosphorus (TP),and their weighted aggregate (R),respectively.The nine fitted curves showed that TN and AT were two important factors influencing algal growth;AT limited growth as algal photosynthesis is mainly carried out near the water surface;N leakage of phytoplankton and internal phosphorus load from sediment explains why TN was the best predictor of peak biomass using the Monod model.The fitted results suggest that annual mean algal biomass increased by 0.145 times when annual mean AT increased by 1.0°C.Results also showed that the more eutrophic the lake,the greater the effect AT had on algal growth.Subsequently,the long-term joint effect of annual temperature increase and eutrophication to water ecosystems can be quantitatively assessed and predicted.Chun Ye Zhemin Shen Tao Zhang Maohong Fan Yangming Lei Jianda Zhang 2011Journal of Environmental Sciences2011,23,2:9
4Secret Key Generation Based on Two-Way Randomness for TDD-SISO System显示文摘A novel secret key generation(SKG)method based on two-way randomness is proposed for TDD-SISO system.The legitimate transceivers mutually transmit their own random signal via reciprocal wireless channel,then the multiplication of transmitted and received signal is used as common randomness to generate secret keys.In quasi-static channel,the theoretical SKG rates(SKGRs)of the three SKG methods,namely wireless channel based,one-way randomness and two-way randomness,are derived and compared.Further,two practical SKG schemes based on twoway randomness,Scheme-1bit and Scheme-3bit,are completely designed and simulated.Generally,Scheme-1bit applies to low signal to noise ratio(SNR)scenarios and achieves 0.13~0.86bit/T_s SKGR and 10^(-2)~10^(-5) level secret key outage probability(SKOP),while Scheme-3bit fits high SNR situation and obtains 0.93~1.35bit/T_s SKGR and 10^(-3)~10^(-4) level SKOP.At last,the national institute of standards and technology(NIST)test is conducted to evaluate the secret key randomness(SKRD)and the test results show that both of the proposed schemes have passed the test.Shengjun Zhang Liang Jin Yangming Lou Zhou Zhong 2018China Communications2018,15,7:8
5New innovations in pavement materials and engineering:A review on pavement engineering research 2021显示文摘Sustainable and resilient pavement infrastructure is critical for current economic and environmental challenges.In the past 10 years,the pavement infrastructure strongly supports the rapid development of the global social economy.New theories,new methods,new technologies and new materials related to pavement engineering are emerging.Deterioration of pavement infrastructure is a typical multi-physics problem.Because of actual coupled behaviors of traffic and environmental conditions,predictions of pavement service life become more and more complicated and require a deep knowledge of pavement material analysis.In order to summarize the current and determine the future research of pavement engineering,Journal of Traffic and Transportation Engineering(English Edition)has launched a review paper on the topic of'New innovations in pavement materials and engineering:A review on pavement engineering research 2021'.Based on the joint-effort of 43 scholars from 24 well-known universities in highway engineering,this review paper systematically analyzes the research status and future development direction of 5 major fields of pavement engineering in the world.The content includes asphalt binder performance and modeling,mixture performance and modeling of pavement materials,multi-scale mechanics,green and sustainable pavement,and intelligent pavement.Overall,this review paper is able to provide references and insights for researchers and engineers in the field of pavement engineering.JTTE Editorial Office Jiaqi Chen Hancheng Dan Yongjie Ding Yangming Gao Meng Guo Shuaicheng Guo Bingye Han Bin Hong Yue Hou Chichun Hu Jing Hu Ju Huyan Jiwang Jiang Wei Jiang Cheng Li Pengfei Liu Yu Liu Zhuangzhuang Liu Guoyang Lu Jian Ouyang Xin Qu Dongya Ren Chao Wang Chaohui Wang Dawei Wang Di Wang Hainian Wang Haopeng Wang Yue Xiao Chao Xing Huining Xu Yu Yan Xu Yang Lingyun You Zhanping You Bin Yu Huayang Yu Huanan Yu Henglong Zhang Jizhe Zhang Changhong Zhou Changjun Zhou Xingyi Zhu 2021Journal of Traffic and Transportation Engineering(English Edition)2021,8,6:7
6Genetic-algorithm-based deep neural networks for highly efficient photonic device design显示文摘While deep learning has demonstrated tremendous potential for photonic device design,it often demands a large amount of labeled data to train these deep neural network models.Preparing these data requires high-resolution numerical simulations or experimental measurements and cost significant,if not prohibitive,time and resources.In this work,we present a highly efficient inverse design method that combines deep neural networks with a genetic algorithm to optimize the geometry of photonic devices in the polar coordinate system.The method requires significantly less training data compared with previous inverse design methods.We implement this method to design several ultra-compact silicon photonics devices with challenging properties including power splitters with uncommon splitting ratios,a TE mode converter,and a broadband power splitter.These devices are free of the features beyond the capability of photolithography and generally in compliance with silicon photonics fabrication design rules.YANGMING REN LINGXUAN ZHANG WEIQIANG WANG XINYU WANG YUFANG LEI YULONG XUE XIAOCHEN SUN WENFU ZHANG 2021Photonics Research2021,9,6:6
7Disruption of adipocyte HIF-1α improves atherosclerosis through the inhibition of ceramide generation显示文摘Atherosclerosis is a chronic multifactorial cardiovascular disease.Western diets have been reported to affect atherosclerosis through regulating adipose function.In high cholesterol diet-fed ApoE^(−/−)mice,adipocyte HIF-1αdeficiency or direct inhibition of HIF-1αby the selective pharmacological HIF-1αinhibitor PX-478 alleviates high cholesterol diet-induced atherosclerosis by reducing adipose ceramide generation,which lowers cholesterol levels and reduces inflammatory responses,resulting in improved dyslipidemia and atherogenesis.Smpd3,the gene encoding neutral sphingomyelinase,is identified as a new target gene directly regulated by HIF-1αthat is involved in ceramide generation.Injection of lentivirus-SMPD3 in epididymal adipose tissue reverses the decrease in ceramides in adipocytes and eliminates the improvements on atherosclerosis in the adipocyte HIF-1α-deficient mice.Therefore,HIF-1αinhibition may constitute a novel approach to slow atherosclerotic progression.Pengcheng Wang Guangyi Zeng Yu Yan Song-yang Zhang Yongqiang Dong Yangming Zhang Xingzhong Zhang Huiying Liu Zhipeng Zhang Changtao Jiang Yanli Pang 2022Acta Pharmaceutica Sinica B2022,12,4:6
8Origin and Accumulation of Natural Gases in the Upper Paleozoic Strata of the Ordos Basin in Central China显示文摘在 Ordos 盆的上面的古生代的阶层的天然气被气体的链烷的相对重的 C 同位素与δ 13 C 1和δ 13 C 2价值主要从 35 ‰ 到 30 ‰ 和 27 ‰ 到 22 ‰,分别地高δ 13在在有超过 0.95 的大多数 C 1/(C1-C5)比率的烃气体的乙烷和甲烷和占优势的甲烷之间的 C 旅行(回合 10 ),建议导出煤的气体的起源。气体展出为天然气的有那些的 C 1-C4 链烷的同位素的侧面发现了在的不同的碳更低这盆古生代,并且相信了从含碳二叠的煤措施被发源。地区性弥漫的煤气的累积的出现在中央盆的轻轻地向南方蘸的 Shanbei 斜坡是不同的。在各种各样的煤气的水库的气体的分子、同位素的作文变化与煤气的来源岩石的热成熟被联系,这被注意。丰富和 δ 13 甲烷的 C 价值通常向北并且从盆中心衰退到它的边缘,并且组合修正上的烃移植的效果似乎不足道。然而,在水库的垂直、侧面的节的单性生植方解石的 C 同位素显示出一个常规变化,并且总体上向上并且向盆边缘被弄空。有煤气的成熟坡度的联合,分析能被认为是为煤气的移植的一个有用工具。ZHU Yangming WANG Jibao LIU Xinse ZHANG Wenzheng 2009Acta Geologica Sinica(English Edition)2009,83,1:5
9Gauge field theory of quantum and the mass empirical formulas of lepton and quarks显示文摘In this paper,we discuss the mathematical relation determined by the basic physical constant between three types of quarks and the masses of leptons with charges in detail.First,by further theoretical analysis,we wonderfully see that the result got from the mass empirical formula of quark and charged lepton is identical with the data received by theoretical estimating from the gauge field theory.Second,we also gladly see that the result got from quark and lepton(with charges)mass empirical formula is completely accordant with experiment data.These mass formulas reveal the essential relation between me,mμ,mτ and mq.At the same time,the empirical formula may also derive the mass formula of neu-trinos.As to the mass of neutrinos,at present we only know the square difference of its mass,and so this is meaningful to theoretically estimating the mass.YOU YangMing ZHANG XueLong WANG BingZhang SHI HuiPing 2008Chinese Science Bulletin2008,53,3:5
10Accumulation Mechanisms and Evolution History of the Giant Puguang Gas Field,Sichuan Basin,China显示文摘稳固的沥青在 Puguang 煤气的地里在整个碳酸盐水库被发现,最大的煤气的地到目前为止在中国在海洋的碳酸盐发现了,证实 Puguang 煤气的地从一座 paleo 油水库演变。液体水管系统在这域里的集中的油累积的时候被重建,并且石油移植小径用一个 3-D 模型被建模并且由 geochemical 参数跟踪了。向前建模并且倒置跟踪与对方一起与一致,两个显示油在 Puguang-Dongyuezhai 结构积累了从一个生产厨房发源到 Puguang 气体地的西北。生存于富有腐殖质的有机物在东北四川盆,是垂直地近来源的岩石和旁边地在生产附近的厨房的液体水管系统的发展,并且集中油统治的器官富人的上面的二叠的来源岩石的免职从生产厨房的一个大区域发源,是为巨大的 Puguang 煤气的地从演变的巨大的paleo油水库的形成的三个要求。Puguang 煤气的地经历了三阶段的进化。累积以后的进程,特别在 hydrocarbon-water-rock 系统的器官无机的相互作用,深刻地不仅改变了石油液体的作文和特征,而且显然在水库改变了物理化学的条件并且导致了碳酸盐矿物质的复杂降水和答案。HAO Fang GUO Tonglou DU Chunguo ZOU Huayao CAI Xunyu ZHU Yangming LI Pingping WANG Chunwu ZHANG Yuanchun 2009Acta Geologica Sinica(English Edition)2009,83,1:4
11Pluripotency-associated miR-290/302 family of microRNAs promote the dismantling of naive pluripotency显示文摘Kai-Li Gu Qiang Zhang Ying Yan Ting-Ting Li Fei-Fei Duan Jing Hao Xi-Wen Wang Ming Shi Da-Ren Wu Wen-Ting Guo Yangming Wang 2016Cell Research2016,26,3:3
12Urban-rural disparities in mild cognitive impairment and its functional subtypes among community- dwelling older residents in central China显示文摘background Substantial variations in the prevalence of mild cognitive impairment(MCI)and its subtypes have been reported,although mostly in geographically defined developed countries and regions.Less is known about MCI and its subtypes in rural areas of less developed central China.Aims The study aimed to compare the prevalence of MCI and its subtypes in residents aged 65 years or older in urban and rural areas of Hubei Province,China.Methods Participants aged 65 years or older were recruited between 2018 and 2019.Inperson structured interviews and clinical and neuropsychological assessments were performed at city health community centres and township hospitals.results Among 2644 participants without dementia,735 had MCI,resulting in a prevalence of 27.8%for total MCI,20.9%for amnestic MCI(aMCI)and 6.9%for non-amnestic MCI(naMCI).The prevalence of MCI in urban and rural areas was 20.2%and 44.1%,respectively.After adjusting for demographic factors,the prevalence of total MCI,aMCI and naMCI differed significantly between rural and urban areas(adjusted odds ratio(OR)2.10,1.44 and 3.76,respectively).Subgroup analysis revealed an association between rural socioeconomic and lifestyle disadvantage and MCI and its subtypes.Conclusions Our findings suggest that the prevalence of MCI among urban residents in central China is consistent with that in other metropolis areas,such as Shanghai,but the prevalence in rural areas is twice that in urban areas.Prospective studies and dementia prevention in China should focus on rural areas.Dan Liu Lin Li Lina An Guirong Cheng Cong Chen Mingjun Zou Bo Zhang Xuguang Gan Lang Xu Yangming Ou Qingming Wu Ru Wang Yan Zeng 2021General Psychiatry2021,34,5:3
13The HDAC inhibitor GCJ-490A suppresses c-Met expression through IKKα and overcomes gefitinib resistance in non-small cell lung cancer显示文摘Objective:The novel compound GCJ-490A has been discovered as a pan-histone deacetylase(HDAC)inhibitor that exerts potent inhibitory activity against HDAC1,HDAC3,and HDAC6.Because of the important roles of HDACs in lung cancer development and the high distribution of GCJ-490A in lung tissue,we explored the anti-tumor potency of GCJ-490A against non-small cell lung cancer(NSCLC)in vitro and in vivo in this study.Methods:The in vitro effects of GCJ-490A alone or combined with the EGFR inhibitor gefitinib against NSCLC were measured with proliferation,apoptosis,and colony formation assays.NSCLC xenograft models were used to investigate the efficacy of GCJ-490A combined with gefitinib for the treatment of NSCLC in vivo.Western blot assays,luciferase reporter assays,chromatin immunoprecipitation assays,quantitative real time-PCR,immunohistochemistry,and transcription factor activity assays were used to elucidate possible mechanisms.Results:GCJ-490A effectively inhibited NSCLC cell proliferation and induced apoptosis in vitro and in vivo.Interestingly,inhibition of HDAC1 and HDAC6 by GCJ-490A increased histone acetylation at the IKKαpromoter and enhanced IKKαtranscription,thus decreasing c-Met.Moreover,this c-Met downregulation was found to be essential for the synergistic anti-tumor activity of GCJ-490A and gefitinib.Conclusions:These findings highlight the promising potential of HDAC inhibitors in NSCLC treatment and provide a rational basis for the application of HDAC inhibitors in combination with EGFR inhibitors in clinical trials.Ting He Yinglei Gao Yanfen Fang Yangming Zhang Shuwei Zhang Fajun Nan Jian Ding Yi Chen 2022Cancer Biology & Medicine2022,19,8:3
14KLF17 promotes human naive pluripotency through repressing MAPK3 and ZIC2显示文摘The pluripotent state of embryonic stem cells(ESCs)is regulated by a sophisticated network of transcription factors.High expression of KLF17 has recently been identified as a hallmark of naive state of human ESCs(h ESCs).However,the functional role of KLF17 in naive state is not clear.Here,by employing various gain and loss-of-function approaches,we demonstrate that KLF17 is essential for the maintenance of naive state and promotes the primed to naive state transition in h ESCs.Mechanistically,we identify MAPK3 and ZIC2 as two direct targets repressed by KLF17.Overexpression of MAPK3 or ZIC2 partially blocks KLF17 from promoting the naive pluripotency.Furthermore,we find that human and mouse homologs of KLF17 retain conserved functions in promoting naive pluripotency of both species.Finally,we show that Klf17 may be essential for early embryo development in mouse.These findings demonstrate the important and conserved function of KLF17 in promoting naive pluripotency and reveal two essential transcriptional targets of KLF17 that underlie its function.Shao-Hua Wang Jing Hao Chao Zhang Fei-Fei Duan Ya-Tzu Chiu Ming Shi Xin Huang Jihong Yang Huiqing Cao Yangming Wang 2022Science China(Life Sciences)2022,65,10:2
15Development of the novel ACLY inhibitor 326E as a promising treatment for hypercholesterolemia显示文摘Hepatic cholesterol accumulation is an important contributor to hypercholesterolemia,which results in atherosclerosis and cardiovascular disease(CVD).ATP-citrate lyase(ACLY)is a key lipogenic enzyme that converts cytosolic citrate derived from tricarboxylic acid cycle(TCA cycle)to acetyl-CoA in the cytoplasm.Therefore,ACLY represents a link between mitochondria oxidative phosphorylation and cytosolic de novo lipogenesis.In this study,we developed the small molecule 326E with an enedioic acid structural moiety as a novel ACLY inhibitor,and its CoA-conjugated form 326E-CoA inhibited ACLY activity with an IC_(50)=5.31±1.2μmol/L in vitro.326E treatment reduced de novo lipogenesis,and increased cholesterol efflux in vitro and in vivo.326E was rapidly absorbed after oral administration,exhibited a higher blood exposure than that of the approved ACLY inhibitor bempedoic acid(BA)used for hypercholesterolemia.Chronic 326E treatment in hamsters and rhesus monkeys resulted in remarkable improvement of hyperlipidemia.Once daily oral administration of 326E for 24 weeks prevented the occurrence of atherosclerosis in ApoE^(-/-)mice to a greater extent than that of BA treatment.Taken together,our data suggest that inhibition of ACLY by 326E represents a promising strategy for the treatment of hypercholesterolemia.Zhifu Xie Mei Zhang Qian Song Long Cheng Xinwen Zhang Gaolei Song Xinyu Sun Min Gu Chendong Zhou Yangming Zhang Kexin Zhu Jianpeng Yin Xiaoyan Chen Jingya Li Fajun Nan 2023Acta Pharmaceutica Sinica B2023,13,2:1
16The fate of CO 2 derived from thermochemical sulfate reduction (TSR) and effect of TSR on carbonate porosity and permeability, Sichuan Basin, China显示文摘Fang Hao Xuefeng Zhang Cunwu Wang Pingping Li Tonglou Guo Huayao Zou Yangming Zhu Jianzhang Liu Zhongxian Cai 2014Earth-Science Reviews2014,,:1
17Clinical applications of neurolinguistics in neurosurgery显示文摘The protection of language function is one of the major challenges of brain surgery.Over the past century,neurosurgeons have attempted to seek the optimal strategy for the preoperative and intraoperative identification of language-related brain regions.Neurosurgeons have investigated the neural mechanism of language,developed neurolinguistics theory,and provided unique evidence to further understand the neural basis of language functions by using intraoperative cortical and subcortical electrical stimulation.With the emergence of modern neuroscience techniques and dramatic advances in language models over the last 25 years,novel language mapping methods have been applied in the neurosurgical practice to help neurosurgeons protect the brain and reduce morbidity.The rapid advancements in brain-computer interface have provided the perfect platform for the combination of neurosurgery and neurolinguistics.In this review,the history of neurolinguistics models,advancements in modern technology,role of neurosurgery in language mapping,and modern language mapping methods(including noninvasive neuroimaging techniques and invasive cortical electroencephalogram)are presented.Peng Wang Zehao Zhao Linghao Bu Nijiati Kudulaiti Qiao Shan Yuyao Zhou N.U.Farrukh Hameed Yangming Zhu Lei Jin Jie Zhang Junfeng Lu Jinsong Wu 2021Frontiers of Medicine2021,15,4:1
18End End-to to-End Chinese Entity Recognition Based on BERT BERT-BiLSTM BiLSTM-ATT ATT-CRF显示文摘Traditional named entity recognition methods need professional domain knowl-edge and a large amount of human participation to extract features,as well as the Chinese named entity recognition method based on a neural network model,which brings the prob-lem that vector representation is too singular in the process of character vector representa-tion.To solve the above problem,we propose a Chinese named entity recognition method based on the BERT-BiLSTM-ATT-CRF model.Firstly,we use the bidirectional encoder representations from transformers(BERT)pre-training language model to obtain the se-mantic vector of the word according to the context information of the word;Secondly,the word vectors trained by BERT are input into the bidirectional long-term and short-term memory network embedded with attention mechanism(BiLSTM-ATT)to capture the most important semantic information in the sentence;Finally,the conditional random field(CRF)is used to learn the dependence between adjacent tags to obtain the global optimal sentence level tag sequence.The experimental results show that the proposed model achieves state-of-the-art performance on both Microsoft Research Asia(MSRA)corpus and people’s daily corpus,with F1 values of 94.77% and 95.97% respectively.LI Daiyi TU Yaofeng ZHOU Xiangsheng ZHANG Yangming MA Zongmin 2022ZTE Communications2022,20,S01:1
19Scission of C–O and C–C linkages in lignin over RuRe alloy catalyst显示文摘The performance of lignin depolymerization is basically determined by the interunit C–O and C–C bonds.Numerous C–O bond cleavage strategies have been developed, while the cleavage of C–C bond between the primary aromatic units remains a challenging task due to the high dissociation energy of C–C bond.Herein, a multifunctional Ru Re alloy catalyst was designed, which exhibited exceptional catalytic activity for the cleavage of both C–O and C–C linkages in a broad range of lignin model compounds(β-1, a-5, 5–5,β-O-4, 4-O-5) and two stubborn lignins(kraft lignin and alkaline lignin), affording 97.5% overall yield of monocyclic compounds from model compounds and up to 129% of the maximum theoretical yield of monocyclic products based on C–O bonds cleavage from realistic lignin. Scanning transmission electron microscopy(STEM) characterization showed that Ru Re(1:1) alloy particles with hexagonal close-packed structure were homogeneously dispersed on the support. Quasi-in situ X-ray photoelectron spectroscopy(XPS), and X-ray absorption spectroscopy(XAS) indicate that Ru species were predominantly metallic state, whereas Re species were partially oxidized;meanwhile, there was a strong interaction between Ru and Re, where the electron transfer from Re to Ru was occurred, resulting in great improvement on the capability of C–O and C–C bonds cleavage in lignin conversion.Xinxin Li Yangming Ding Xiaoli Pan Yanan Xing Bo Zhang Xiaoyan Liu Yuanlong Tan Hua Wang Changzhi Li 2022Journal of Energy Chemistry2022,31,4:1
20Review of ultraviolet ageing mechanisms and anti-ageing methods for asphalt binders显示文摘Asphalt binder is inevitably aged by ultraviolet(UV)light during its service period.UV ageing can significantly decrease the technical properties of asphalt binder.The sensitivity of asphalt to UV ageing and thermal-oxidative ageing differs,such that the UV ageing performance cannot be determined based on the thermal-oxidative ageing performance.Previous researches mainly focused on the chemical composite and technical performance changes of asphalt binder during UV ageing,and the UV light parameters effect on the ageing rate of asphalt binder.However,the theory for characterizing and explaining the development of UV ageing depth does not get too much attentions,and the UV ageing mechanism of asphalt binder is not very clear.Therefore,it cannot guide to develop or select the good methods or anti-UV ageing additives for asphalt binders.This paper focuses on the latest researches of the mechanisms and anti-ageing methods of asphalt binders.With the increase of UV ageing time,the UV ageing of asphalt binder develops gradually from the surface to inner part.There are various methods,such as low-penetration grade asphalt,less air void ratio,UV stabilizers and UV light absorbers,that can improve the UV ageing resistance of asphalt binders.A new theory of sensitive wavelengths of asphalt UV ageing is proposed,which can enrich the basic theory of asphalt UV ageing.Depending on this theory,different wavelengths of UV light have different ageing effects on asphalt binder.The composite anti-UV ageing additives with barrier and specific absorption effects on UV light is proposed,and may have better improvement effect on the anti-UV ageing performance of asphalt binder.Yuanyuan Li Jianlin Feng Shaopeng Wu Anqi Chen Dongliang Kuang Tao Bai Yangming Gao Jizhe Zhang Linglin Li Liyao Wan Quantao Liu Zongwu Chen Dengjun Gu 2022Journal of Road Engineering2022,2,2:1
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