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Quantification of Central and Eastern China's atmospheric CH_(4) enhancement changes and its contributions based on machine learning approach

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Journal of Environmental Sciences 2024年第4期138卷 236-248页

作者： Xinyue Ai Cheng Hu yanrong yang Leying Zhang Huili Liu Junqing Zhang Xin Chen Guoqiang Bai Wei Xiao College of Biology and the Environment Joint Center for sustainable Forestry in Southern ChinaNanjing Forestry UniversityNanjing 210037China Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC-FEMD) Nanjing University of Information Science&TechnologyNanjing 210044China Guang’an Vocational&Technical College Guangan 638550China HuaNan Meteorological Administration Huanan 154400China

Methane is the second largest anthropogenic greenhouse gas,and changes in atmospheric methane concentrations can reflect the dynamic balance between its emissions and ***,the monitoring of CH_(4) concentration changes and the assessment of underlying driving factors can provide scientific basis for the government’s policy making and *** is the world’s largest emitter of anthropogenic ***,due to the lack of ground-based observation sites,little work has been done on the spatial-temporal variations for the past decades and influencing factors in China,especially for areas with high anthropogenic emissions as Central and Eastern *** to quantify atmospheric CH_(4) enhancements trends and its driving factors in Central and Eastern China,we combined the most up-to-date TROPOMI satellite-based column CH_(4)(xCH_(4))concentration from 2018 to 2022,anthropogenic and natural emissions,and a random forest-based machine learning approach,to simulate atmospheric xCH_(4) enhancements from 2001 to *** results showed that(1)the random forest model was able to accurately establish the relationship between emission sources and xCH_(4) enhancement with a correlation coefficient(R^(2))of 0.89 and a root mean-square error(RMSE)of 11.98 ppb;(2)The xCH_(4) enhancement only increased from 48.21±2.02 ppb to 49.79±1.87 ppb from the year of 2001 to 2018,with a relative change of 3.27%±0.13%;(3)The simulation results showed that the energy activities and waste treatment were the main contributors to the increase in xCH_(4) enhancement,contributing 68.00% and 31.21%,respectively,and the decrease of animal ruminants contributed-6.70% of its enhancement trend.

关键词： TROPOMI Methane column concentrations Anthropogenic sources Random Forest model

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Comparison of uniform resampling and nonuniform sampling direct-reconstruction methods in k-space for FD-OCT

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Journal of Innovative Optical Health Sciences 2023年第5期16卷 93-106页

作者： yanrong yang Yun Dai Yuehua Zhou Yaliang yang College of Ophthalmology Chengdu University of Traditional Chinese Medicine Chengdu 610075 P.R.China Institute of Optics and Electronics Chinese Academy of Sciences Chengdu 610209P.R.China Key Laboratory of Adaptive Optics Chinese Academy of Sciences Chengdu 610209P.R.China Key Laboratory of Sichuan Province Ophthalmopathy Prevention&Cure and Visual Function Protection with TCM Chengdu 610075 P.R.China Ineye Hospital of Chengdu University of TCM Chengdu 610075 P.R.China

The nonuniform distribution of interference spectrum in wavenumber k-space is a key issue to limit the imaging quality of Fourier-domain optical coherence tomography(FD-OCT).At present,the reconstruction quality at different depths among a variety of processing methods in k-space is still *** simulated and experimental interference spectra at different depths,the effects of common six processing methods including uniform resampling(linear interpolation(LI),cubic spline interpolation(CSI),time-domain interpolation(TDI),and K-B window convolution)and nonuniform sampling direct-reconstruction(Lomb periodogram(LP)and nonuniform discrete Fourier transform(NDFT))on the reconstruction quality of FD-OCT were quantitatively analyzed and compared in this *** results obtained by using simulated and experimental data were *** the experimental results,the averaged peak intensity,axial resolution,and signal-to-noise ratio(SNR)of NDFT at depth from 0.5 to 3.0mm were improved by about 1.9 dB,1.4 times,and 11.8 dB,respectively,compared to the averaged indices of all the uniform resampling methods at all ***,the improvements of the above three indices of LP were 2.0 dB,1.4 times,and 11.7 dB,*** analysis method and the results obtained in this work are helpful to select an appropriate processing method in k-space,so as to improve the imaging quality of FD-OCT.

关键词： Optical coherence tomography signal processing uniform resampling nonuniform sampling direct-reconstruction reconstruction quality.

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Source apportionment of VOCs in a typical medium-sized city in North China Plain and implications on control policy

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Journal of Environmental Sciences 2021年第9期33卷 26-37页

作者： Juanjuan Qin Xiaobo Wang yanrong yang Yuanyuan Qin Shaoxuan Shi Peihua Xu Rongzhi Chen Xueming Zhou Jihua Tan Xinming Wang College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China Faculty of Earth Resources China University of GeosciencesWuhan 430074China Guangzhou Institute of Geochemistry Chinese Academy of SciencesGuangzhou 510640China

Characteristics of atmospheric VOCs(volatile organic compounds) have been extensively studied in megacities in China, however, they are scarcely investigated in medium/smallsized cities in North China Plain(NCP).A comprehensive research on possible sources of VOCs was conducted in a medium-sized city of NCP, from May to September 2019.A total of 143 canister samples of 8 sites in Xuchang city were collected, and 57 VOC species were *** average VOC concentrations were 42.6 ± 31.6 μg/m3, with 53.7 ± 31.0 μg/m3 and 32.1 ± 27.8 μg/m^(3), in the morning and afternoon, *** and aromatics contributed 80% of the total ozone formation potential(OFP).Aromatics accounted for more than 95% of secondary organic aerosol potential(SOAP).VOCs were dominated by the local emission with significant transport from the southeast *** analysis extracted 6 sources, which were combustion(33.1%), LPG usage(19.3%), vehicular exhaust & fuel evaporation(15.8%), solvent usage(15.2%), industrial(9.11%) and biogenic(7.51%), respectively and they contributed 33.4%, 17.6%, 12.9%, 18.6%, 9.28% and 8.22% to the OFP, *** and LPG usage were the dominant VOC sources;and combustion, solvent usage and LPG usage were the main sources of OFP in Xuchang city, which were different to megacities in China with a high contribution from vehicular exhaust, solvent usage and industry,suggesting specific control strategies on VOCs need to be implemented in medium-sized city such as Xuchang city.

关键词： Volatile organic compounds Source apportionment Ozone Positive matrix factorization Medium-sized city

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Emerging phagocytosis checkpoints in cancer immunotherapy

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Signal Transduction and Targeted Therapy 2023年第4期8卷 1461-1502页

作者： Yu’e Liu Yanjin Wang yanrong yang Linjun Weng Qi Wu Jin Zhang Pengcheng Zhao Lan Fang Yufeng Shi Ping Wang Tongji University Cancer Center Shanghai Tenth People’s Hospital of Tongji UniversitySchool of MedicineTongji UniversityShanghai 200092China Department of Nephrology Shanghai East HospitalTongji University School of MedicineShanghaiChina Department of Pharmacology and Toxicology University of Mississippi Medical Center39216 JacksonMSUSA Clinical Center for Brain and Spinal Cord Research Tongji UniversityShanghai 200092China

Cancer immunotherapy,mainly including immune checkpoints-targeted therapy and the adoptive transfer of engineered immune cells,has revolutionized the oncology landscape as it utilizes patients’own immune systems in combating the cancer *** cells escape immune surveillance by hijacking the corresponding inhibitory pathways via overexpressing checkpoint *** checkpoints,such as CD47,CD24,MHC-I,PD-L1,STC-1 and GD2,have emerged as essential checkpoints for cancer immunotherapy by functioning as“don’t eat me”signals or interacting with“eat me”signals to suppress immune *** checkpoints link innate immunity and adaptive immunity in cancer *** ablation of these phagocytosis checkpoints,as well as blockade of their signaling pathways,robustly augments phagocytosis and reduces tumor *** all phagocytosis checkpoints,CD47 is the most thoroughly studied and has emerged as a rising star among targets for cancer ***47-targeting antibodies and inhibitors have been investigated in various preclinical and clinical ***,anemia and thrombocytopenia appear to be formidable challenges since CD47 is ubiquitously expressed on ***,we review the reported phagocytosis checkpoints by discussing their mechanisms and functions in cancer immunotherapy,highlight clinical progress in targeting these checkpoints and discuss challenges and potential solutions to smooth the way for combination immunotherapeutic strategies that involve both innate and adaptive immune responses.

关键词： immunotherapy immunity utilize

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Education Technology Cloud Platform Framework Establishment and Security

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Journal of Computer and Communications 2016年第7期4卷 7-14页

作者： Guoqiang Hu yanrong yang Li Li Network and Education Technology Center Northwest A&F University Yangling China

With more educational business absorbed into information management system at universities, traditional information management platform seems unable to provide efficient service for teaching and research. Some universities then resort to cloud computing platform. In view of the problems existing in the traditional information platform, this study presented an information management framework designed with cloud technology, and introduced the security techniques for its protection.

关键词： Cloud Platform Framework Security

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CmWRKY6-1-CmWRKY15-like transcriptional cascade negatively regulates the resistance to fusarium oxysporum infection in Chrysanthemum morifolium

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Horticulture Research 2023年第7期10卷 87-98页

作者： Weihao Miao Xiangyu Xiao Yuean Wang Lijiao Ge yanrong yang Ye Liu Yuan Liao Zhiyong Guan Sumei Chen Weimin Fang Fadi Chen Shuang Zhao College of Horticulture Nanjing Agricultural UniversityNanjing 210095China Key Laboratory of Landscaping Ministry of Agriculture and Rural AffairsNanjing 210095China Zhongshan Biological Breeding Laboratory No.50 Zhongling StreetNanjingJiangsu 210014China

Chrysanthemum Fusarium wilt is a soil-borne disease that causes serious economic losses to the chrysanthemum ***,the molecular mechanism underlying the response of chrysanthemum WRKY to Fusarium oxysporum infection remains largely *** this study,we isolated CmWRKY6–1 from chrysanthemum‘Jinba’and identified it as a transcriptional repressor localized in the nucleus via subcellular localization and transcriptional activation *** found that CmWRKY6–1 negatively regulated resistance to *** and affected reactive oxygen species(ROS)and salicylic acid(SA)pathways using transgenic experiments and transcriptomic ***,CmWRKY6–1 bound to the W-box element on the CmWRKY15-like promoter and inhibited its ***,we observed that CmWRKY15-like silencing in chrysanthemum reduced its resistance to *** via transgenic *** conclusion,we revealed the mechanism underlying the CmWRKY6–1–CmWRKY15-like cascade response to *** infection in chrysanthemum and demonstrated that CmWRKY6–1 and CmWRKY15-like regulates the immune system.

关键词： oxysporum soil resistance

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基于均方根误差和相关系数评价人眼像差对视网膜像质的影响

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光学学报 2017年第3期37卷 382-388页

作者：杨彦荣戴云中国科学院光电技术研究所四川成都610209 中国科学院大学北京100049 中国科学院自适应光学重点实验室四川成都610209

视网膜成像质量的下降会减弱视力等视觉功能,直接影响人们的日常生活。人眼像差是影响其像质的主要因素,为了提高视网膜像质,常用自适应光学矫正人眼像差,以获得接近衍射极限的分辨力或理想像质。矫正波前像差的过程需要以分辨力或像质... 详细信息

视网膜成像质量的下降会减弱视力等视觉功能,直接影响人们的日常生活。人眼像差是影响其像质的主要因素,为了提高视网膜像质,常用自适应光学矫正人眼像差,以获得接近衍射极限的分辨力或理想像质。矫正波前像差的过程需要以分辨力或像质的评价作为依据。其评价方法大致分为基于瞳孔面和成像面两种,这两种方法主要表征成像系统的分辨力,但不能直观和定量地评价像质。而基于成像面的光学传递函数(OTF)法需要借助曲线面积等才能定量地评价像质,且不同空间频率的像质不同。为此,计算携带人眼像差的OTF,以此模拟人眼成像过程,直观地表征了像质变化。并重新定义均方根误差和相关系数,分析人眼像差对它们的影响,量化地反映各项像差矫正前后的像质变化。

关键词：视觉光学自适应光学人眼像差视网膜像质分辨力

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武夷山自然保护区野生观赏植物资源及园林应用

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安徽农业科学 2007年第6期35卷 1754-1755页

作者：杨艳容湖北襄樊职业技术学院湖北襄樊441021

通过野外调查,列出了武夷山自然保护区部分野生观赏植物资源,依观赏习性将其园林用途分为6大类:乔木类、灌木类、藤本类、地被类、盆景类、切花及切叶类。对其中观赏和利用价值高的植物进行了重点描述。

关键词：武夷山自然保护区野生观赏植物资源园林应用

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人与技术的博弈——数字媒体时代的电影表演

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当代电影 2016年第7期 142-145页

作者：杨扬杨艳荣中国传媒大学艺术学部戏剧影视学院中国传媒大学艺术学部艺术研究院 2015级硕士研究生100024

电影表演作为电影艺术的重要组成部分,自诞生以来,在与电影制作技术相互推动、从不断对抗至走向和谐的过程中确立了其独特的形态。电影表演与技术如同博弈的两位棋手,技术进步一次次将表演统摄在技术表现范围内,表演则一次次使技术从奇... 详细信息

电影表演作为电影艺术的重要组成部分,自诞生以来,在与电影制作技术相互推动、从不断对抗至走向和谐的过程中确立了其独特的形态。电影表演与技术如同博弈的两位棋手,技术进步一次次将表演统摄在技术表现范围内,表演则一次次使技术从奇观展示转化为情感表达的媒介。而今,数字媒体技术的发展与电影制作技术的历次进步相似,电影表演与数字媒体技术两者,仍然是相互推动、从对抗到和谐的博弈关系。在与技术的博弈中,知己知彼方能立于不败,电影表演既要有的放矢地适应技术,也要利用技术增强表现力,充分发挥技术带给表演的无限可能性,同时坚守真实细腻的情感追求。

关键词：电影表演数字媒体技术

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大卫·芬奇电影作品中的黑色元素、元叙事文本与多重话语建构

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电影评介 2021年第21期 65-68页

作者：杨艳蓉山西大同大学外国语学院

大卫·芬奇最初在美国因拍摄音乐MV短片闻名,在执导《异形3》(1992)后进入一线电影导演行列,由于执导了《七宗罪》(1995)、《搏击俱乐部》(1999)、《社交网络》(2010)等大量悬疑与奇幻类型的电影作品,成为当今好莱坞最具有影响力的导演... 详细信息

大卫·芬奇最初在美国因拍摄音乐MV短片闻名,在执导《异形3》(1992)后进入一线电影导演行列,由于执导了《七宗罪》(1995)、《搏击俱乐部》(1999)、《社交网络》(2010)等大量悬疑与奇幻类型的电影作品,成为当今好莱坞最具有影响力的导演之一。大卫·芬奇在业内以对画面与人物的精致乃至苛刻的掌控出名,他擅长利用黑色元素制造出多重效果。

关键词：大卫·芬奇《七宗罪》《搏击俱乐部》黑色元素电影作品《社交网络》话语建构叙事文本

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