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Winter wheat mapping using a random forest classifier combined with multi-temporal and multi-sensor data

International Journal of Digital Earth 2018年第8期11卷 783-802页

作者： Jiantao Liu Quanlong Feng Jianhua Gong jieping zhou Jianming Liang Yi Li State Key Laboratory of Remote Sensing Science Institute of Remote Sensing and Digital EarthChinese Academy of SciencesBeijingPeople’s Republic of China University of Chinese Academy of Sciences BeijingPeople’s Republic of China Beijing Piesat Information Technology Co. Ltd.BeijingPeople’s Republic of China Zhejiang-CAS Application Center for Geoinformatics JiashanPeople’s Republic of China School of Life Sciences Arizona State UniversityTempeAZUSA

Wheat is a major staple food crop in *** and cost-effective wheat mapping is exceedingly critical for food production management,food security warnings,and food trade policy-making in *** reduce confusion between wheat and non-wheat crops for accurate growth stage wheat mapping,we present a novel approach that combines a random forest(RF)classifier with multi-sensor and multi-temporal image *** study aims to(1)determine whether an RF combined with multi-sensor and multi-temporal imagery can achieve accurate winter wheat mapping,(2)to find out whether the proposed approach can provide improved performance over the traditional classifiers,and(3)examine the feasibility of deriving reliable estimates of winter wheat-growing areas from medium-resolution remotely sensed *** wheat mapping experiments were conducted in Boxing *** experimental results suggest that the proposed method can achieve good performance,with an overall accuracy of 92.9%and a kappa coefficient(κ)of *** winter wheat acreage was estimated at 33,895.71 ha with a relative error of only 9.3%.The effectiveness and feasibility of the proposed approach has been evaluated through comparison with other image classification *** conclude that the proposed approach can provide accurate delineation of winter wheat areas.

关键词： Winter wheat random forest phenology Landsat-8 GF-1

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适形调强放射治疗联合经动脉化疗栓塞治疗晚期肝细胞癌的预后研究

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中国医学装备 2024年第4期21卷 13-17页

作者：王鸿飞杨柳周解平吴爱东安徽省肿瘤医院放疗科合肥230031 合肥工业大学汽车与交通工程学院合肥230031 中国科学技术大学附属第一医院放疗科合肥230031

目的:探讨适形调强放射治疗(IMRT)联合经动脉化疗栓塞(TACE)治疗晚期肝细胞癌(HCC)的疗效及预后。方法:回顾性分析2015年12月至2021年12月安徽省肿瘤医院收治的114例晚期HCC患者,所有患者均采用IMRT联合TACE治疗,使用单因素及多因素Cox... 详细信息

目的:探讨适形调强放射治疗(IMRT)联合经动脉化疗栓塞(TACE)治疗晚期肝细胞癌(HCC)的疗效及预后。方法:回顾性分析2015年12月至2021年12月安徽省肿瘤医院收治的114例晚期HCC患者,所有患者均采用IMRT联合TACE治疗,使用单因素及多因素Cox生存分析确定影响患者生存期的独立预测影响因素。结果:经IMRT联合TACE治疗后所有患者的总有效率(完全缓解+部分缓解)为60.5%(69/114)。多因素分析发现肿瘤直径较大、高美国东部肿瘤协作组(ECOG)评分、Ⅲ~Ⅳ型门静脉癌栓(PVTT)、肝炎治疗和白细胞计数升高均是影响患者生存期的独立预测影响因素(HR=1.085、2.627、1.891、0.531、1.134,P<0.05)。结论:肿瘤Ⅲ~Ⅳ型PVTT和肿瘤直径较大对患者的生存有很大影响;而患者身体状态、肝炎治疗及全身炎症也是影响患者生存的重要因素。采用IMRT联合TACE治疗晚期HCC具有较好的治疗的效果,但应充分考虑预后生存影响因素。

关键词：肝细胞癌(HCC) 癌栓经动脉化疗栓塞(TACE) 三维适形调强放射治疗(3D-IMRT)

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Effects of a closed-loop system against SARS-CoV-2 at the Beijing 2022 Olympic Winter Games:a descriptive and modeling study

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World Journal of Emergency Medicine 2023年第6期14卷 471-476页

作者： Rong Xiong jieping zhou Wenning Li Jie Liu Jing Lou Sijia Tian Huixin Lian Shengmei Niu Luxi Zhang Wenhang Li Jinjun Zhang Emergence Medical Service Group for Beijing 2022 Winter Olympic Games Beijing Emergency Medical CenterBeijing 100031China Department of Neurology Beijing Fuxing HospitalCapital Medical UniversityBeijing 100038China Aerospace Information Research Institute Chinese Academy of SciencesBeijing 100094China Department of General Surgery Beijing Tongren HospitalCapital Medical UniversityBeijing 100730China Games Services Department Beijing Organizing Committeefor the 2022 Olympic and Paralympic Winter Games

BACKGROUND:To assess the efficacy of the epidemic prevention measures of the“closed-loop”system adopted by the Beijing 2022 Olympic Winter Games(BOWG).METHODS:We retrospectively collected and analyzed information,including age,sex,nationality,vaccination status,date of diagnosis,and date of entry,from 280 SARS-CoV-2-positive individuals identified during the BOWG.A susceptibility-exposed-infectious-remove model was employed to evaluate the effectiveness of epidemic prevention strategies on controlling the spread of SARS-CoV-2 under different scenarios during the ***:Regarding SARS-CoV-2-positive cases,97.9%were imported,and 96.4%were *** median age was 37 years(range:29–47 years),and 73.9%were male,with the majority of cases being broadcasters and European *** vaccination status,93.5%were fully vaccinated,and six cases were considered to have been infected in the closed-loop system during the *** that the BOWG adopted a semi-closed-loop management system,the cumulative number of confirmed cases would be 1,137 for quick quarantine measures(3 d later)implemented and 5,530 for delayed quarantine measures(9 d later)*** modeling revealed that stringent pandemic prevention measures and closed-loop management effectively controlled the spread of SARS-CoV-2 during the ***:Imported cases are considered the main risk factor for SARS-CoV-2 transmission during mass gatherings,but a comprehensive closed-loop system could minimize transmission among attendees and general personnel.

关键词： Olympic Winter Games Emergency medical service SARS-CoV-2 COVID-19 Infectious disease Transmission

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An efficient flood dynamic visualization approach based on 3D printing and augmented reality

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International Journal of Digital Earth 2020年第11期13卷 1302-1320页

作者： Guoyong Zhang Jianhua Gong Yi Li Jun Sun Bingli Xu Dong Zhang jieping zhou Ling Guo Shen Shen Bingxiao Yin National Engineering Research Center for Geoinformatics Aerospace Information Research Institute(AIR)Chinese Academy of SciencesBeijingPeople’s Republic of China University of Chinese Academy of Sciences BeijingPeople’s Republic of China Zhejiang-CAS Application Center for Geoinformatics ZhejiangPeople’s Republic of China Jiaxing Hetu Remote Sensing Technology Co. LtdZhejiangPeople’s Republic of China Management Engineering Department Hebei Vocational College of Rail TransportationHebeiPeople’s Republic of China Academy of Army Armored Forces BeijingPeople’s Republic of China

Flood visualization is an effective and intuitive tool for representing flood information from abstract spatiotemporal *** the growing demand for flood disaster visualizations and mitigation,augmented flood visualizations that support decision makers’perspectives are needed,which can be enhanced by emerging augmented reality(AR)and 3D printing *** paper proposes an innovative flood AR visualization method based on a 3D-printed terrain model and investigates essential techniques,such as the suitable size calculation of the terrain models,the adaptive processing of flood data,and hybridizing virtual flood and terrain models.A prototype experimental system(PES)based on the proposed method and a comparison experimental system(CES)based on a virtual terrain are developed to conduct comparative experiments,which combine the system performance and questionnaire method to evaluate the efficiency and usability of the proposed *** statistical results indicate that the method is useful for assisting participants in understanding the flood hazard and providing a more intuitive and realistic visual experience compared with that of the traditional AR flood visualization *** frame rate is stable at 60 frames per second(FPS),which means that the proposed method is more efficient than the traditional AR flood visualization method.

关键词： Flood visualization augmented reality 3Dprinted terrain virtual geographic environment augmented reality geovisualization

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Landscape of emerging and re-emerging infectious diseases in China： impact of ecology, climate, and behavior

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Frontiers of Medicine 2018年第1期12卷 3-22页

作者： Qiyong Liu Wenbo Xu Shan Lu Jiafu Jiang jieping zhou Zhujun Shao Xiaobo Liu Lei Xu Yanwen Xiong Han Zheng Sun Jin Hai Jiang Wuchun Cao Jianguo Xu State Key Laboratory for Infectious Disease Prevention and Control Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases National Institute for Communicable Disease Control and Prevention Chinese Center for Disease Control and Prevention Beijing 102206 China National Institute for ~ral Disease Control and Prevention China CDC Beijing 102206 China Beijing Institute of Microbiology and Epidemiology State Key Laboratory of Pathogen and Biosecurity Beijing 100071 China The Institute of Remote Sensing and Digital Earth Chinese Academy of Sciences Beijing 100094 China State Key Laboratory of Remote Sensing Science Jointly Sponsored by Institute of Remote Sensing and Digital Earth of Chinese Academy of Sciences and Beijing Normal University Beijing 100094 China

For the past several decades, the infectious disease profile in China has been shifting with rapid developments in social and economic aspects, environment, quality of food, water, housing, and public health infrastructure. Notably, 5 notifiable infectious diseases have been almost eradicated, and the incidence of 18 additional notifiable infectious diseases has been significantly reduced. Unexpectedly, the incidence of over 10 notifiable infectious diseases, including HIV, brucellosis, syphilis, and dengue fever, has been increasing. Nevertheless, frequent infectious disease outbreaks/events have been reported almost every year, and imported infectious diseases have increased since 2015. New pathogens and over 100 new genotypes or serotypes of known pathogens have been identified. Some infectious diseases seem to be exacerbated by various factors, including rapid urbanization, large numbers of migrant workers, changes in climate, ecology, and policies, such as returning farmland to forests. This review summarizes the current experiences and lessons from China in managing emerging and re-emerging infectious diseases, especially the effects of ecology, climate, and behavior, which should have merits in helping other countries to control and prevent infectious diseases.

关键词： infectious disease profile emerging infectious diseases influence factor

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Does ergogenic effect of caffeine supplementation depend on CYP1A2 genotypes? A systematic review with meta-analysis

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Journal of Sport and Health Science 2024年第4期13卷 499-508页

作者： jieping Wang Luthfia Dewi Yundong Peng Chien-Wen Hou Yanmin Song Giancarlo Condello Laboratory of Exercise Biochemistry University of TaipeiTianmu CampusTaipei 11153China Department of Emergency Medicine National Clinical Research Center for Geriatric DisordersXiangya HospitalCentral South UniversityChangsha 410008China Department of Nutrition Universitas Muhammadiyah SemarangSemarang 50273Indonesia School of Sports Medicine and Rehabilitation Beijing Sport UniversityBeijing 10084China Department of Medicine and Surgery University of ParmaParma 43126Italy

Background:The ergogenic effects of caffeine intake on exercise performance are well-established,even if differences exist among individuals in response to caffeine *** genetic variation of a specific gene,human cytochrome P450 enzyme 1A2(CYP1A2)(rs762551),may be one reason for this *** systematic review and meta-analysis aimed to comprehensively evaluate the influence of CYP1A2 gene types on athletes’exercise performance after caffeine ***:A literature search through 4 databases(Web of Science,PubMed,Scopus,and China National Knowledge Infrastructure)was conducted until March *** effect size was expressed as the weighted mean difference(WMD)by calculating fixed effects meta-analysis if heterogeneity was not significant(I^(2)≤50%and p≥0.1).Subgroup analyses were performed based on AA and AC/CC genotype of ***:The final number of studies meeting the inclusion criteria was 12(n=666 participants).The overall analysis showed that the cycling time trial significantly improved after caffeine intake(WMD=-0.48,95%confidence interval(95%CI):-0.83 to-0.13,p=0.007).In subgroup analyses,acute caffeine intake improved cycling time trial only in individuals with the A allele(WMD=-0.90,95%CI:-1.48 to-0.33,p=0.002),but not the C allele(WMD=-0.08,95%CI:-0.32 to 0.17,p=0.53).Caffeine supplementation did not influence the Wingate(WMD=8.07,95%CI:-22.04 to 38.18,p=0.60)or countermovement jump test(CMJ)performance(WMD=1.17,95%CI:-0.02 to 2.36,p=0.05),and these outcomes were not influenced by CYP1A2 ***:Participants with the CYP1A2 genotype with A allele improved their cycling time trials after caffeine ***,compared to placebo,acute caffeine supplementation failed to increase the Wingate or CMJ performance,regardless of CYP1A2 genotype.

关键词： Countermovement jump test Endurance Ergogenic aid Gene polymorphism Wingate

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Trade-offs between the accumulation of cuticular wax and jasmonic acid-mediated herbivory resistance in maize

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Journal of Integrative Plant Biology 2024年第1期66卷 143-159页

作者： Jiong Liu Lu Li Zhilong Xiong Christelle AMRobert Baozhu Li Shan He Wenjie Chen Jiasheng Bi Guanqing Zhai Siyi Guo Hui Zhang jieping Li Shutang zhou Xi Zhang Chun‐Peng Song School of Life Sciences Henan UniversityKaifeng 475004China State Key Laboratory of Crop Stress Adaptation and Improvement Henan UniversityKaifeng 475004China State Key Laboratory of Cotton Bio‐Breeding and Integrated Utilization Henan UniversityKaifeng 475004China Sanya Institute of Henan University Sanya 572025China Institute of Plant Sciences University of BernBern 3013Switzerland

Plants have evolved complex physical and chemical defense systems that allow them to withstand herbivory *** of a complex mixture of very-long-chain fatty acids(VLCFAs)and their derivatives,cuticular wax constitutes the first physical line of defense against ***,we report the function of Glossy 8(ZmGL8),which encodes a 3-ketoacyl reductase belonging to the fatty acid elongase complex,in orchestrating wax production and jasmonic acid(JA)-mediated defenses against herbivores in maize(Zea mays).The mutation of GL8 enhanced chemical defenses by activating the JA-dependent *** observed a trade-off between wax accumulation and JA levels across maize glossy mutants and 24 globally collected maize inbred *** addition,we demonstrated that mutants defective in cuticular wax biosynthesis in Arabidopsis thaliana and maize exhibit enhanced chemical *** transcriptomic and lipidomic analyses indicated that the gl8 mutant confers chemical resistance to herbivores by remodeling VLCFA-related lipid metabolism and subsequent JA biosynthesis and *** results suggest that VLCFA-related lipid metabolism has a critical role in regulating the trade-offs between cuticular wax and JA-mediated chemical defenses.

关键词： cuticular wax fall armyworm herbivore resistance jasmonic acid maize plant-herbivore interactions

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协同虚拟地理教学环境的设计与实现

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武汉大学学报（信息科学版） 2008年第3期33卷 289-292页

作者：李文航龚建华周洁萍中国科学院遥感应用研究所北京市大屯路甲20号100101

探讨了网络技术和虚拟现实技术支持下的协同虚拟地理教学环境,提出了一种协同虚拟地理教学环境的框架模型,并使用Java和Java 3D开发出原型系统。原型系统在以龙卷风为主题的协同虚拟教学中得到实际应用,效果良好。

关键词：协同虚拟地理教学虚拟现实协同虚拟环境 Java Java 3D

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Activation of skeletal carbohydrate-response element binding protein (ChREBP)-mediated de novo lipogenesis increases intramuscular fat content in chickens

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ANIMAL NUTRITION 2024年第3期18卷 107-118页

作者： Wang, Peng Xiao, Haihan Wu, Tian Fu, Qinghua Song, Xudong Zhao, Yameng Li, Yan Huang, jieping Song, Ziyi Guangxi Univ Coll Anim Sci & Technol Guangxi Key Lab Anim Breeding Dis Control & Preven Nanning 530004 Guangxi Peoples R China

The intracellular lipids in muscle cells of farm animals play a crucial role in determining the overall intramuscular fat (IMF) content, which has a positive impact on meat quality. However, the mechanisms underlying the deposition of lipids in muscle cells of farm animals are not yet fully understood. The purpose of this study was to determine the roles of carbohydrate-response element binding protein (ChREBP) and fructose in IMF deposition of chickens. For virus-mediated ChREBP overexpression in tibialis anterior (TA) muscle of chickens, seven 5-d-old male yellow-feather chickens were used. At 10 d after virus injection, the chickens were slaughtered to obtain TA muscles for analysis. For fructose administration trial, sixty 9-wk-old male yellow-feather chickens were randomly divided into 2 groups, with 6 replicates per group and 5 chickens per replicate. The chickens were fed either a basal diet or a basal diet supplemented with 10% fructose (purity >= 99%). At 4 wk later, the chickens were slaughtered, and breast and thigh muscles were collected for analysis. The results showed that the skeletal ChREBP mRNA levels were positively associated with IMF content in multiple species, including the chickens, pigs, and mice (P < 0.05). ChREBP overexpression increased lipid accumulation in both muscle cells in vitro and the TA muscles of mice and chickens in vivo (P < 0.05), by activation of the de novo lipogenesis (DNL) pathway. Moreover, activation of ChREBP by dietary fructose administration also resulted in increased IMF content in mice and notably chickens (P < 0.05). Furthermore, the lipidomics analysis revealed that ChREBP activation altered the lipid composition of chicken IMF and tented to improve the flavor profile of the meat. In conclusion, this study found that ChREBP plays a pivotal role in mediating the deposition of fat in chicken muscles in response to fructose-rich diets, which provides a novel strategy for improving meat quality in the livestock indust

关键词： Chicken Meat quality Intramuscular fat Carbohydrate-response element binding protein Fructose TRANSCRIPTION FACTOR CHREBP GLUCOSE FRUCTOSE SUCROSE LIVER MEAT DIFFERENTIATION IDENTIFICATION EXPRESSION

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睫状神经营养因子对星形胶质细胞细胞周期的影响

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华中科技大学学报（医学版） 2007年第1期36卷 5-9页

作者：吴艳刘仁刚周洁萍华中科技大学同济医学院基础医学院解剖学系

目的探讨睫状神经营养因子(CNTF)在有血清培养和无血清培养的情况下,对星形胶质细胞分化和增殖的影响。方法将纯化的星形胶质细胞分为有血清培养和无血清培养组,根据CNTF剂量不同,每组再分别分为0、2、20、200 ng/ml 4个亚组(共8个亚组... 详细信息

目的探讨睫状神经营养因子(CNTF)在有血清培养和无血清培养的情况下,对星形胶质细胞分化和增殖的影响。方法将纯化的星形胶质细胞分为有血清培养和无血清培养组,根据CNTF剂量不同,每组再分别分为0、2、20、200 ng/ml 4个亚组(共8个亚组)。每个亚组分别在6、12和24 h取材,应用流式细胞术检测星形胶质细胞在各细胞周期时相中的百分比。结果CNTF使无血清培养组的星形胶质细胞处于G0/G1期的细胞百分比上升,而使有血清培养组的星形胶质细胞处于G0/G1期的细胞百分比下降。结论无血清培养时CNTF可以刺激星形胶质细胞分化进入活化状态,但不刺激其增殖;有血清培养时CNTF可以协助血清中的丝裂原引起星形胶质细胞增殖。

关键词：睫状神经营养因子星形胶质细胞细胞周期

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