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Comprehensive review on the composition， influence， and inhibition of asphalt fumes

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Journal of Traffic and Transportation Engineering(English Edition) 2024年

作者： Ke Shi Feng Ma Augusto Cannone Falchetto zhen Fu Dongdong Yuan Ruimeng Song Jiasheng dai Haopeng Wang School of Highway， Chang'an University Department of Civil Engineering， Aalto University School of Materials Science and Engineering， Chang'an University School of Engineering， University of Liverpool

Asphalt mixtures generate substantial amounts of harmful fumes and particulate matter (PM) during various construction processes， including factory mixing， vehicle transportation， and field paving. Road workers exposed to asphalt fumes face potential health hazards， while the emissions also adversely affect the atmospheric environment. Investigation into the determination of asphalt fume components， the impact of exposure， and inhibition strategies have gained significant attention. This paper conducted an analysis based on the publications from 1998 to 2024 on asphalt fumes， elucidating the knowledge landscape of asphalt fume research. The cooperative features， literature classification， and journal sources in the field are systematically examined. Current research focuses on topics such as composition and emission characterization of asphalt fumes， collection and detection of asphalt fumes， exposure to asphalt fumes and their health effects， and sustainable asphalt technologies and emissions control. Additionally， this paper proposes trends in the asphalt fume research field; it outlines future research directions， offering theoretical guidance for studying the impact and inhibition of asphalt fumes.

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多波束低轨卫星用户分组与资源分配算法

北京航空航天大学学报 2024年第8期50卷 2575-2584页

作者：代添雄徐桢北京航空航天大学电子信息工程学院北京100191

与地面网络设施相比,卫星的机载资源十分有限,面对用户地理位置及流量需求分布的不均匀,传统的固定分组和固定资源分配方式缺乏灵活性,限制了系统容量。基于地理位置的用户分组,利用相控阵天线产生的具有灵活方向和波束宽度的动态波束... 详细信息

与地面网络设施相比,卫星的机载资源十分有限,面对用户地理位置及流量需求分布的不均匀,传统的固定分组和固定资源分配方式缺乏灵活性,限制了系统容量。基于地理位置的用户分组,利用相控阵天线产生的具有灵活方向和波束宽度的动态波束和跳波的时间分片技术,可以实现对卫星资源的合理分配和高效利用。在低轨多波束卫星场景下,利用P中心问题模拟用户分组问题算法对卫星用户进行分组,实现用户平均信息速率的最大化。基于分组结果提出一套适用于用户分组方案的灵活资源分配算法,并在最后加入一个组间资源调配的过程,以避免空闲资源的浪费。经过实验数据模拟和性能评估,所提算法比传统的用户分组和资源分配算法更能够有效提升系统吞吐量,降低用户平均排队时延。

关键词：多波束卫星跳波束用户分组时隙分配功率分配

IbNIEL-mediated degradation of IbNAC087 regulates jasmonic acid-dependent salt and drought tolerance in sweet potato

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Journal of Integrative Plant Biology 2024年第2期66卷 176-195页

作者： Xu Li zhen Wang Sifan Sun Zhuoru dai Jun Zhang Wenbin Wang Kui Peng Wenhao Geng Shuanghong Xia Qingchang Liu Hong Zhai Shaopei Gao Ning Zhao Feng Tian Huan Zhang Shaozhen He Key Laboratory of Sweet Potato Biology and Biotechnology Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis&Utilization and Joint Laboratory for International Cooperation in Crop Molecular BreedingMinistry of EducationCollege of Agronomy&BiotechnologyChina Agricultural UniversityBeijing 100193China Sanya Institute of China Agricultural University Sanya 572025China State Key Laboratory of Plant Physiology and Biochemistry National Maize Improvement CenterKey Laboratory of Biology and Genetic Improvement of MaizeBeijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing 100193China

Sweet potato(Ipomoea batatas[L.]Lam.)is a crucial staple and bioenergy *** abiotic stress tolerance holds significant importance in fully utilizing marginal *** processes regulate abiotic stress responses,yet the molecular regulatory mechanisms in sweet potato remain *** this study,a NAC(NAM,ATAF1/2,and CUC2)transcription factor,IbNAC087,was identified,which is commonly upregulated in salt-and drought-tolerant *** of IbNAC087 increased salt and drought tolerance by increasing jasmonic acid(JA)accumulation and activating reactive oxygen species(ROS)scavenging,whereas silencing this gene resulted in opposite ***-rich IbNAC087-OE(overexpression)plants exhibited more stomatal closure than wild-type(WT)and IbNAC087-Ri plants under NaCl,polyethylene glycol,and methyl jasmonate ***087 functions as a nuclear transcriptional activator and directly activates the expression of the key JA biosynthesisrelated genes lipoxygenase(IbLOX)and allene oxide synthase(IbAOS).Moreover,IbNAC087 physically interacted with a RING-type E3 ubiquitin ligase NAC087-INTERACTING E3 LIGASE(IbNIEL),negatively regulating salt and drought tolerance in sweet *** ubiquitinated IbNAC087 to promote 26S proteasome degradation,which weakened its activation on IbLOX and *** findings provide insights into the mechanism underlying the IbNIEL-IbNAC087 module regulation of JA-dependent salt and drought response in sweet potato and provide candidate genes for improving abiotic stress tolerance in crops.

关键词： abiotic tolerance IbNAC087 IbNIEL JA sweet potato

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多级结构超疏水表面的制备与性能分析

材料导报 2024年第9期38卷 256-260页

作者：位振戴飞何强中国民用航空飞行学院民航安全工程学院四川广汉618307 甘肃农业大学机电工程学院兰州730000

随着橡胶产品应用的广泛拓展,具备超疏水性能的橡胶产品越来越受关注。然而如何便捷、大规模地制备超疏水表面对橡胶的疏水应用具有重要的意义。本工作通过在未硫化的氟硅橡胶表面喷涂一层二氧化硅粒子,构造第一层级微观结构,然后通过... 详细信息

随着橡胶产品应用的广泛拓展,具备超疏水性能的橡胶产品越来越受关注。然而如何便捷、大规模地制备超疏水表面对橡胶的疏水应用具有重要的意义。本工作通过在未硫化的氟硅橡胶表面喷涂一层二氧化硅粒子,构造第一层级微观结构,然后通过模板法在氟硅橡胶表面成功地复制了不锈钢编织网的结构,构造了第二层级结构,并分析了构造的氟硅橡胶表面的官能团存在情况、微观结构、疏水性能以及液滴弹跳和自清洁性能。结果表明:通过模板法和喷涂技术在氟硅橡胶表面制备的多级微观结构为液滴提供了支持力和排斥作用,其静态接触角为(156.7±0.97)°,滚动角为1°。并且构建的多级结构表面具有优异的液滴弹跳性能和良好的自清洁性能。在氟硅橡胶表面构建多级结构可以极大地提升表面的疏水性能,为制备超疏水表面提供一种新的思路。

关键词：多级结构喷涂法模板法氟硅橡胶超疏水

Explosion of research on psychopathology and social media use after COVID-19:A scientometric study

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World Journal of Psychiatry 2024年第5期14卷 742-759页

作者： Meng-Di Zhang Rong-Quan He Jia-Yuan Luo Wan-Ying Huang Jing-Yu Wei Jian dai Hong Huang zhen Yang Jin-Liang Kong Gang Chen Department of Pathology The First Affiliated Hospital of Guangxi Medical UniversityNanning 530021Guangxi Zhuang Autonomous RegionChina Department of Medical Oncology The First Affiliated Hospital of Guangxi Medical UniversityNanning 530021Guangxi Zhuang Autonomous RegionChina Department of Clinical Psychology Jiangbin Hospital of Guangxi Zhuang Autonomous RegionNanning 530021Guangxi Zhuang Autonomous RegionChina Division of Pulmonary and Critical Care Medicine The First Affiliated Hospital of Guangxi Medical UniversityNanning 530021Guangxi Zhuang Autonomous RegionChina

BACKGROUND Despite advances in research on psychopathology and social media use,no comprehensive review has examined published papers on this type of research and considered how it was affected by the coronavirus disease 2019(COVID-19)*** To explore the status of research on psychopathology and social media use before and after the COVID-19 *** We used Bibliometrix(an R software package)to conduct a scientometric analysis of 4588 relevant studies drawn from the Web of Science Core Collection,PubMed,and Scopus *** Such research output was scarce before COVID-19,but exploded after the pandemic with the publication of a number of high-impact *** authors and institutions,located primarily in developed countries,maintained their core positions,largely uninfluenced by COVID-19;however,research production and collaboration in developing countries increased significantly after *** the analysis of keywords,we identified commonly used methods in this field,together with specific populations,psychopathological conditions,and clinical *** have devoted increasing attention to gender differences in psychopathological states and linked COVID-19 strongly to depression,with depression detection becoming a new *** in research on psychopathology and social media use are unbalanced and uncoordinated across countries/regions,and more indepth clinical studies should be conducted in the *** After COVID-19,there was an increased level of concern about mental health issues and a changing emphasis on social media use and the impact of public health emergencies.

关键词： Psychopathology Social media Bibliometrics Web of Science PubMed Scopus

Integrated and holistic knowledge map of phase change materials for pavement: A scientometric analysis and bibliometric review

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Journal of Traffic and Transportation Engineering(English Edition) 2024年

作者： Jiasheng dai Feng Ma zhen Fu Chen Li Yingjie Hou Yalu Wen Yanzhe Zou Dongdong Yuan Wenhao Dong Ke Shi Key Laboratory for Special Area Highway Engineering of Ministry of Education， Chang'an University School of Material and Science Engineering， Chang'an University

Elevated pavement temperatures contribute to the urban heat island effect and pose a risk of thermal damage to pavement. Thus， regulating pavement temperature is paramount to ensure its longevity， enhance traffic safety， and preserve the environment. Phase change materials (PCMs) with the latent heat characteristic can store and release thermal energy via phase transitions. PCMs can effectively control pavement structure temperatures within a relatively narrow range， mitigating thermal stress on asphalt pavements. This research aims to explore the current status and emerging trends in PCM Integrated Pavement Engineering (PCMIPE) using the CiteSpace visual analysis tool. Relevant publications were systematically curated from the Web of Science core database， spanning 2011 to 2023. Subsequently， the co-authorships network maps (country， institution， author)， co-cited network maps (co-cited journals， authors， and references)， and keyword co-occurrence network maps were constructed to analyze the principal contributions in the PCMIPE field comprehensively. This analysis provides an understanding of the field's strengths， research domains， and knowledge structure and identifies current research focal points and emerging frontiers. The findings reveal that research within the PCMIPE field is still in its early stages， with a predominant emphasis on material design and performance assessment. Additionally， future research is anticipated to expand into economic analyses and exploration of environmental effects when integrating PCMs into pavement engineering. Furthermore， there is an emerging interest in investigating the synergy of PCMs with other functional pavement technologies. These results underscore the potential of the PCMIPE field and emphasize the importance of future research endeavors.

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Advances in microbubble-assisted ultrasound-guided gene therapy:Mechanisms and applications

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Science China Materials 2024年第9期67卷 2749-2766页

作者： zhen Tie Shuhao Zhang Yunfeng Qu Mengxuan Wang Renfa Liu Desheng Sun Zhifei dai Department of Biomedical Engineering College of Future TechnologyNational Biomedical Imaging CenterState Key Laboratory of Vascular Homeostasis and RemodelingPeking UniversityBeijing 100871China Department of Ultrasonic Imaging Peking University Shenzhen HospitalShenzhen 518035China

Gene therapy,as one of the popular therapies nowadays,has been applied with great success in various ***,there are also concerns about the safety,therapeutic efficacy,and applicability of gene ***crobubble-assisted ultrasound-guided gene therapy offers the following incomparable advantages over conventional meth***,this strategy enables the therapeutic nucleic acids to effectively cross the barriers like cell membrane,blood-brain barrier,and blood-retinal barrier that exist in the body and reach regions that cannot be accessed by conventional methods,which extends the scope of applications of gene ***,it is possible to restrict the zone of gene transfection to the lesion area by controlling the irradiation coverage of ultrasound,hence effectively controlling the risk of ***,with the support of various imaging techniques like ultrasound imaging and magnetic resonance imaging,the procedure of gene therapy can be under image guidance,which will dramatically improve the safety of gene *** review will highlight on the advances in ultrasound-enhanced gene delivery strategy,attention to the relevant mechanisms of the strategy,the derived technologies and the related cutting-edge ***,we will also have a discussion on the limitations and future prospects associated with this gene delivery strategy.

关键词： gene therapy microbubble ultrasound cavitation image-guided gene therapy

基于CNN-XGBoost模型的多类型棉花叶片病害识别

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江苏农业科学 2024年第13期52卷 205-213页

作者：戴臻费洪晓湖南科技职业学院软件学院湖南长沙4100042 中南大学计算机学院湖南长沙410012

为提高棉花生产和质量,需要对棉花叶片病害进行及时和准确的识别。然而,现有研究方法往往只能处理少数几种常见的病害类型,而无法覆盖更多的病害种类。本研究提出一种基于CNN-XGBoost模型的多类型棉花叶片病害识别方法,该方法能够识别... 详细信息

为提高棉花生产和质量,需要对棉花叶片病害进行及时和准确的识别。然而,现有研究方法往往只能处理少数几种常见的病害类型,而无法覆盖更多的病害种类。本研究提出一种基于CNN-XGBoost模型的多类型棉花叶片病害识别方法,该方法能够识别出21种不同的病害类型,涵盖了细菌、真菌、病毒、营养缺乏等多种因素导致的病害。首先,收集约1.2万张棉花叶片病害图像样本,构建一个包含多种类型病害的数据集,对数据集进行预处理和增强操作,增加数据的多样性和难度;其次,设计一个CNN模型,利用卷积层和池化层提取棉花叶片图像的特征向量,将CNN模型的输出作为XGBoost模型的输入,使用XGBoost模型对特征向量进行分类;最后,采用加权交叉熵损失函数作为优化目标,通过反向传播算法更新CNN模型和XGBoost模型的参数。结果表明,本研究提出的CNN-XGBoost模型在21种类型棉花叶片病害上都能达到高精度的识别,平均准确率达到0.98,远高于其他对比方法,为棉花生产者提供了一个实用和高效的植物病害诊断工具,有助于及时发现和处理棉花叶片病害,从而提高棉花产量。

关键词： CNN-XGBoost 棉花叶片病害多类型病害加权交叉熵损失函数

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Yinhuang granule alleviates carbon tetrachloride-induced liver fibrosis in mice and its mechanism

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World Journal of Hepatology 2024年第2期16卷 264-278页

作者： Hao Ouyang Hui Miao zhen Li Duan Wu Si-Cheng Gao Yao-Yao dai Xiao-Di Gao Hai-Sheng Chai Wei-Ye Hu Jun-Feng Zhu Department of Liver Yueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghai 201203China State Key Laboratory of Bioreactor Engineering East China University of Science and TechnologyShanghai 201203China

BACKGROUND Liver fibrosis is a formidable global medical challenge,with no effective clinical treatment currently *** granule(YHG)is a proprietary Chinese medicine comprising Scutellariae Radix and Lonicerae Japonicae *** is frequently used for upper respiratory tract infections,pharyngitis,as well as acute and chronic *** To investigate the potential of YHG in alleviating carbon tetrachloride(CCl4)-induced liver fibrosis in *** To induce a hepatic fibrosis model in mice,this study involved intraperitoneal injections of 2 mL/kg of CCl4 twice a week for 4 ***,liver fibrosis mice in the low dose of YHG(0.4 g/kg)and high dose of YHG(0.8 g/kg)groups were orally administered YHG once a day for 4 *** alanine/aspartate aminotransferase(ALT/AST)activity and liver hydroxyproline content were *** red and Masson's trichrome staining assay were *** polymerase chain reaction,western-blot and enzyme-linked immunosorbent assay were *** glutathione content,superoxide dismutase activity level,reactive oxygen species and protein carbonylation amount were *** The administration of YHG ameliorated hepatocellular injury in CCl4-treated mice,as reflected by decreased serum ALT/AST activity and improved liver histological *** also attenuated liver fibrosis,evident through reduced liver hydroxyproline content,improvements in Sirius red and Masson's trichrome staining,and lowered serum hyaluronic acid ***,YHG hindered the activation of hepatic stellate cells(HSCs)and ameliorated oxidative stress injury and inflammation in liver from CCl4-treated *** prompted the nuclear accumulation of nuclear factor erythroid 2-related factor 2(Nrf2)and upregulated the expression of Nrf2-dependent downstream antioxidant *** addition,YHG promoted mitochondrial biogenesis in liver from CCl4-treated mice,as demonstrated by increased liver adenosine triphosphate content,

关键词： Yinhuang granule Liver fibrosis Hepatic stellate cells Oxidative injury Nuclear factor erythroid 2-related factor 2 Inflammation