检索结果-南通市图书馆

Molecular Plant 2022年第5期15卷 779-782页

作者： Zhiquan Yang Congyuan Liang LuLu Wei Shengbo Wang feifan yin Dongxu Liu Liang Guo Yongming Zhou Qing-Yong Yang National Key Laboratory of Crop Genetic Improvement College of InformaticsHuazhong Agricultural UniversityWuhan 430070China Hubei Key Laboratory of Agricultural Bioinformatics College of InformaticsHuazhong Agricultural UniversityWuhan 430070China

Dear Editor,Genetic variations,which range from single nucleotide polymor-phisms(SNPs)and short insertion/deletions(InDels)to large-scale structural variations(SVs),are the basis of phenotypic diversity.Understanding the effect of genetic variations on traits is critical for uncovering the genetic architecture of various phe-notypes.

关键词： agronomic traits InDel

基于改进DeepLabV3+的遥感图像分割模型

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

北京测绘 2024年第5期38卷 686-691页

作者：俞淑洋杨利亚杨静殷非凡湖州市测绘院浙江湖州313000 中国水利水电第八工程局有限公司湖南长沙410000 湖州市空间规划编制研究中心浙江湖州313000

针对经典语义分割算法对遥感图像分割精度较低、参数量大等问题,提出一种轻量化网络与注意力机制相结合的改进深度实验室库版本3(DeepLabV3)+遥感图像语义分割模型。首先,使用移动网络版本3(MobileNetV3)轻量化模型作为DeepLabV3+的特... 详细信息

针对经典语义分割算法对遥感图像分割精度较低、参数量大等问题,提出一种轻量化网络与注意力机制相结合的改进深度实验室库版本3(DeepLabV3)+遥感图像语义分割模型。首先,使用移动网络版本3(MobileNetV3)轻量化模型作为DeepLabV3+的特征提取网络,可有效降低整个模型的参数量;其次,对DeepLabV3+模型解码阶段添加有效通道注意力机制,增强模型对不同通道的特征拟合能力。实验表明:本文所改进DeepLabV3+模型相较原模型,参数量降低3.6倍,平均交并比提高3.5%。

关键词：遥感图像分割 DeepLabV3+模型轻量化网络注意力机制模块

基于改进DDRNet网络的遥感影像山体滑坡识别

在线全文

学校读者我要写书评

暂无评论

北京测绘 2024年第3期38卷 393-397页

作者：杨利亚俞淑洋杨静殷非凡湖州市测绘院浙江湖州313000 中国水利水电第八工程局有限公司湖南长沙410000

山体滑坡是一种极具毁灭性的自然灾害,滑坡灾害识别和调查是预防灾害工作的重要基础。传统山体滑坡识别方法、识别精度和自动化程度均较低,为此,本文提出一种基于深度学习分割网络的山体滑坡识别算法。首先,使用双分辨率网络模型作为主... 详细信息

山体滑坡是一种极具毁灭性的自然灾害,滑坡灾害识别和调查是预防灾害工作的重要基础。传统山体滑坡识别方法、识别精度和自动化程度均较低,为此,本文提出一种基于深度学习分割网络的山体滑坡识别算法。首先,使用双分辨率网络模型作为主干网络,然后在主干网络中添加卷积注意力机制模块,以增加模型对滑坡特征提取能力,最后在训练阶段添加辅助损失函数,以增加模型对滑坡特征拟合能力。实验表明:与常用的分割模型相比,准确率、召回率、F1得分和平均交并比均有5%左右提升,参数量下降2/3左右;表示所提模型具有较好的滑坡检测能力,可高效精确定位滑坡位置。

关键词：山体滑坡识别双分辨率网络分割模型卷积注意力机制结构辅助损失函数

How geographic accessibility and rural governance mitigate the impact of multiple risks on rural households' well-being: Evidence from the Dabie Mountains in China

在线全文

学校读者我要写书评

暂无评论

Journal of Geographical Sciences 2024年第6期34卷 1195-1227页

作者： WANG feifan WANG ying Department of Land Resources Management School of Public AdministrationChina University of GeosciencesWuhan 430074China Key Laboratory of the MinistryofNatural Resources for Legal Research Wuhan 430074China

Despite previous studies on the interconnectedness of livelihood risks and human well-being, limited emphasis has been placed on the influence of geographic accessibility and rural governance on the well-being of rural households. Furthermore, the interplay between geographic accessibility, rural governance, and livelihood risk remains inadequately explored. Based on 522 household samples collected in the Dabie Mounand ordinary least squares regression, this study examines the influence of multiple risks on the subjective well-being of rural households by investigating the moderating roles played by geographic accessibility and rural governance. The results show that(1) multiple risk factors have a significant negative effect on rural households' well-being(β=-0.219, p<0.01);(2) geographic accessibility has a weak positive effect on rural households' well-being(β=0.064, p<0.1) compared to rural governance, which plays a larger positive role(β=0.228, p<0.01);and(3) geographic accessibility has a significant moderating effect on the relationship between multiple risks and rural households' well-being, decreasing the adverse impact of multiple risks on households' well-being. Our findings suggest that geographic accessibility and rural governance have positive implications for enhancing the well-being of rural households. The findings provide policy insight into mitigating livelihood risks and their negative impacts on household well-being in mountainous regions worldwide.

关键词： multiple risks rural governance livelihood well-being index spatial traps Dabie Mountains China

On the Polygonal Wear Evolution of Heavy-Haul Locomotive Wheels due to Wheel/Rail Flexibility and Its Mitigation Measures

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Mechanical Engineering 2024年第1期37卷 40-61页

作者： Yunfan Yang feifan Chai Pengfei Liu Liang Ling Kaiyun Wang Wanming Zhai State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures Shijiazhuang Tiedao UniversityShijiazhuang 050043China State Key Laboratory of Rail Transit Vehicle System Southwest Jiaotong UniversityChengdu 610031China

Wheel polygonal wear can immensely worsen wheel/rail interactions and vibration performances of the train and track,and ultimately,lead to the shortening of service life of railway components.At present,wheel/rail medium-or high-frequency frictional interactions are perceived as an essential reason of the high-order polygonal wear of railway wheels,which are potentially resulted by the flexible deformations of the train/track system or other external excitations.In this work,the effect of wheel/rail flexibility on polygonal wear evolution of heavy-haul locomotive wheels is explored with aid of the long-term wheel polygonal wear evolution simulations,in which different flexible modeling of the heavy-haul wheel/rail coupled system is implemented.Further,the mitigation measures for the polygonal wear of heavy-haul locomotive wheels are discussed.The results point out that the evolution of polygonal wear of heavy-haul locomotive wheels can be veritably simulated with consideration of the flexible effect of both wheelset and rails.Execution of mixed-line operation of heavy-haul trains and application of multicut wheel re-profiling can effectively reduce the development of wheel polygonal wear.This research can provide a deep-going understanding of polygonal wear evolution mechanism of heavy-haul locomotive wheels and its mitigation measures.

关键词： Heavy-haul locomotive Wheel polygonal wear Wheel/rail flexibility Long-term polygonal wear evolution Mitigation measures

Multiple interface coupling on natural tourmaline enables high-efficiency removal of antibiotic:Superior property and mechanism

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2024年第6期140卷 242-254页

作者： Jingjing Cui Xiangyu Liu feifan Qie Chengzhe Xie Qingdong He Jian Liu Steven L.Suib Wenbo Wang College of Chemistry and Chemical Engineering Inner Mongolia UniversityHohhot 010021China Department of Chemistry University of ConnecticutStorrsCT 06269-3060United States

Reasonably designing highly active,environmentally friendly,and cost-effective catalysts for efficient elimination of pollutants from water is desirable but challenging.Herein,an efficient heterogeneous photo-Fenton catalyst tourmaline(TM)/tungsten oxide(WO_(3-x))(named TW10)containing tungsten/boron/iron(W/B/Fe)synergistic active centers and 90%of cheap natural tourmaline(TM)mineral rich in Fe and B elements.The TW10 catalyst can quickly activate peroxymonosulfate(PMS)to generate massive active free radicals,which may induce the rapid and efficient degradation of tetracycline(TC).The TW10/PMS/Visible light system can effectively degrade up to 98.7%of tetracycline(TC)in actual waters(i.***.seawater,Yellow River,and Yangtze River water),and the catalytic degradation rates reach 1.65,5.569,and 2.38 times higher than those of TM,WO_(3-x),and commercial P25(Degussa,Germany),respectively.In addition,the catalyst can be recycled and reused multiple times.Electron spin resonance spectroscopy(EPR),X-ray photoelectron spectroscopy(XPS),and liquid chromatograph-mass spectrometer(LC-MS)analyses confirm that the synergistic catalytic effect of W/B/Fe sites on the TW10 catalyst accelerates the electron transfer between Fe(Ⅱ)and Fe(Ⅲ),as well as between W(Ⅴ)and W(Ⅵ),and thus promotes the rapid degradation of TC.The catalytic reaction mechanism and degradation pathway of TC were explored.This work provides a feasible route for the design and development of new eco-friendly and efficient catalyst.

关键词： Tourmaline(TM) Fenton-like catalyst Tungsten oxide Peroxymonosulfate Antibiotic

Acculturation and translation:Modern architectural heritage of Zhongshan Park in Xiamen from typological perspective

在线全文

学校读者我要写书评

暂无评论

Frontiers of Architectural Research 2024年第3期13卷 613-624页

作者： Xufang Li Xiangpin Zhou feifan Weng Fanzhuo Ding Zhenxin Yi Department of Landscape Architecture College of Architecture&Urban PlanningTongji UniversityShanghai 200092China Department of Landscape Architecture College of Landscape Architecture&ArtFujian Agriculture and Forestry UniversityFuzhou 350002China Academy of Art&Design Tsinghua UniversityBeijing 100084China Graduate School of Techno Design Kookmin UniversitySeoulRepublic of Korea

The modern architectural heritage is the core carrier of city’s historical inheritance and vitality.Its value is related to the spatial and temporal evolution of the urban landscape,along with the collective memory of society and transformation in public life.The contradiction between high-speed urban construction and architectural heritage preservation has proliferated,and the problems of loss of heritage culture and fading of relics are very significant,but there is a lack of research on modern architectural heritage.This study analysed indepth the artistic archetypes and evolutionary characteristics of the architecture of Zhongshan Park in Xiamen through field research and historical data collation,adopting the theory method of architectural typology.Afterwards,we analysed the architectural typology of Zhongshan Park in Xiamen and the process of acculturation and translation with foreign cultures,explored the motives of its formation and the cultural meanings of the public space embodied in it.Based on this,we proposed a sustainable development heritage approach for the modern architectural heritage of Zhongshan Park in Xiamen.Our results indicate that modern architectural art has inherited classical Chinese historical and cultural traditions and ideological foundations.Its unique characteristics reflect the spirit of the times and result from the gradual development of Western influence.Moreover,it embodies a strong sense of national identity.These findings enrich the academic research on the cultural interaction between Chinese and Western architecture,offering valuable insights for the conservation and living heritage of modern architectural heritage in other regions.

关键词： Modern architectural heritage Acculturation translation Architectural typology Sun Yat-sen culture Xiamen Zhongshan Park

Regulation of interlayer channels of graphene oxide nanosheets in ultra-thin Pebax mixed-matrix membranes for CO_(2) capture

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2024年第3期67卷 257-267页

作者： feifan Yang Yuanhang Jin Jiangying Liu Haipeng Zhu Rong Xu Fenjuan Xiangli Gongping Liu Wanqin Jin State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 211816China Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology School of Petrochemical EngineeringChangzhou UniversityChangzhou 213164China Shandong Production and Research Long Membrane Technology Development Co. Ltd.Yantai Economic Development ZoneYantai 265505China

For the application of carbon capture by membrane process,it is crucial to develop a highly permeable CO_(2)-selective membrane.In this work,we reported an ultra-thin polyether-block-amide(Pebax)mixedmatrix membranes(MMMs)incorporated by graphene oxide(GO),in which the interlayer channels were regulated to optimize the CO_(2)/N_(2) separation performance.Various membrane preparation conditions were systematically investigated on the influence of the membrane structure and separation performance,including the lateral size of GO nanosheets,GO loading,thermal reduction temperature,and time.The results demonstrated that the precisely regulated interlayer channel of GO nanosheets can rapidly provide CO_(2)-selective transport channels due to the synergetic effects of size sieving and preferential adsorption.The GO/Pebax ultra-thin MMMs exhibited CO_(2)/N_(2) selectivity of 72 and CO_(2) permeance of 400 GPU(1 GPU=106 cm^(3)(STP)·cm^(2)·s^(-1)·cmHg^(-1)),providing a promising candidate for CO_(2) capture.

关键词： Mixed-matrix membrane Ultra-thin membrane Pebax Graphene oxide CO_(2) capture

Plant-based dietary patterns and risk of esophageal cancer:A prospective cohort study spanning 17 years

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Cancer Research 2024年第1期36卷 36-45页

作者： Xiaorui Zhang feifan He Jiayue Li Ru Chen Xinqing Li Li Li Fen Liu Shaoming Wang Wenqiang Wei Department of Epidemiology and Health Statistics School of Public HealthBeijing Municipal Key Laboratory of Clinical EpidemiologyCapital Medical UniversityBeijing 100069China National Central Cancer Registry office National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China Department of Cancer Epidemiology National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China

Objective: Plant-based diets have multiple health benefits for cancers;however, little is known about the association between plant-based dietary patterns and esophageal cancer(EC).This study presents an investigation of the prospective associations among three predefined indices of plant-based dietary patterns and the risk of EC.Methods: We performed endoscopic screening for 15,709 participants aged 40-69 years from two high-risk areas of China from January 2005 to December 2009 and followed the cohort until December 31, 2022. The overall plant-based diet index(PDI), healthful plant-based diet index(h PDI), and unhealthful plant-based diet index(u PDI), were calculated using survey responses to assess dietary patterns. We applied Cox proportional hazard regression to estimate the multivariable hazard ratios(HRs) and 95% confidence intervals(95% CIs) of EC across 3plant-based diet indices and further stratified the analysis by subgroups.Results: The final study sample included 15,184 participants in the cohort. During a follow-up of 219,365person-years, 176 patients with EC were identified. When the highest quartile was compared with the lowest quartile, the pooled multivariable-adjusted HR of EC was 0.50(95% CI, 0.32-0.77) for h PDI. In addition, the HR per 10-point increase in the h PDI score was 0.42(95% CI, 0.27-0.66) for ECs. Conversely, u PDI was positively associated with the risk of EC, and the HR was 1.80(95% CI, 1.16-2.82). The HR per 10-point increase in the u PDI score was 1.90(95% CI, 1.26-2.88) for ECs. The associations between these scores and the risk of EC were consistent in most subgroups. These results remained robust in sensitivity analyses.Conclusions: A healthy plant-based dietary pattern was associated with a reduced risk of EC. Emphasizing the healthiness and quality of plant-based diets may be important for preventing the development of EC.

关键词： Esophageal cancer diet dietary pattern epidemiology nutrition prospective cohort study

Identification of candidate genes controlling fiber quality traits in upland cotton through integration of meta-QTL,significant SNP and transcriptomic data

在线全文

学校读者我要写书评

暂无评论

Journal of Cotton Research 2020年第4期3卷 324-335页

作者： XU Shudi PAN Zhenyuan yin feifan YANG Qingyong LIN Zhongxu WEN Tianwang ZHU Longfu ZHANG Dawei NIE Xinhui Key Laboratory of Oasis Ecology Agricultural of Xinjiang Production and Construction Coprs Agricultural CollegeShihezi UniversityShihezi 832000XinjiangChina Hubei Key Laboratory of Agricultural Bioinformatics College of InformaticsHuazhong Agricultural UniversityWuhan 430070HubeiChina National Key Laboratory of Crop Genetic Improvement College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhan 430070HubeiChina Research Institute of Economic Crops Xinjiang Academy of Agricultural SciencesUrumqi 830091China

Background:Meta-analysis of quantitative trait locus(QTL)is a computational technique to identify consensus QTL and refine QTL positions on the consensus map from multiple mapping studies.The combination of meta-QTL intervals,significant SNPs and transcriptome analysis has been widely used to identify candidate genes in various plants.Results:In our study,884 QTLs associated with cotton fiber quality traits from 12 studies were used for meta-QTL analysis based on reference genome TM-1,as a result,74 meta-QTLs were identified,including 19 meta-QTLs for fiber length;18 meta-QTLs for fiber strength;11 meta-QTLs for fiber uniformity;11 meta-QTLs for fiber elongation;and 15 meta-QTLs for micronaire.Combined with 8589 significant single nucleotide polymorphisms associated with fiber quality traits collected from 15 studies,297 candidate genes were identified in the meta-QTL intervals,20 of which showed high expression levels specifically in the developing fibers.According to the function annotations,some of the 20 key candidate genes are associated with the fiber development.Conclusions:This study provides not only stable QTLs used for marker-assisted selection,but also candidate genes to uncover the molecular mechanisms for cotton fiber development.

关键词： Fiber quality traits Meta-QTL Significant SNPs Candidate genes Transcriptomic data