检索结果-南通市图书馆

遥感学报 2008年第3期12卷 477-482页

作者：王海鹏金亚秋大内和夫渡边学岛田政信复旦大学波散射与遥感信息教育部重点实验室上海200433 日本防卫大学日本宇宙航空研究开发机构

用2002年和2003年日本Pi-SAR全极化数据,研究日本北海道苫小牧森林地区的森林生物量。雷达后向散射系数随森林生物量的增大而增大并迅速达到饱和,L波段雷达数据饱和点约为40 t/hm^2,X波段仅约为20t/hm^2。在SAR数据统计分布中,K分布的... 详细信息

用2002年和2003年日本Pi-SAR全极化数据,研究日本北海道苫小牧森林地区的森林生物量。雷达后向散射系数随森林生物量的增大而增大并迅速达到饱和,L波段雷达数据饱和点约为40 t/hm^2,X波段仅约为20t/hm^2。在SAR数据统计分布中,K分布的指数参数在饱和点以上仍随生物量的增大而增大,并且HV极化方式时相关性最高。根据交叉极化数据K分布的指数参数与森林生物量的关系,本文估算了23个观测点的森林生物量,结果表明平均准确率为85%。因此该算法可以作为一种新的估算森林生物量的手段。

关键词： SAR 森林生物量饱和点 K分布指数

一种改进的子视图交叉相关法检测海面小型移动船舶

在线全文

学校读者我要写书评

暂无评论

遥感信息 2008年第3期30卷 35-38页

作者：王海鹏金亚秋大内和夫复旦大学波散射与遥感信息教育部重点实验室上海200433 日本防卫大学神奈川239-6868

本文基于船舶检测的子视图交叉相关法,提出一种SAR图像检测小型移动船舶的方法,突破了原算法仅适用于检测大型或静止目标的限制。SAR图像数据由ALOS-PALSAR采集,海面实况已知数据包括ALOS经过时的海面船只数量、航速及航向等参数。实验... 详细信息

本文基于船舶检测的子视图交叉相关法,提出一种SAR图像检测小型移动船舶的方法,突破了原算法仅适用于检测大型或静止目标的限制。SAR图像数据由ALOS-PALSAR采集,海面实况已知数据包括ALOS经过时的海面船只数量、航速及航向等参数。实验结果表明本文提出方法优于恒虚警率CFAR与原有的子视图相关法,同时也讨论了用ALOS-PALSAR图像检测船舶时,其尺寸大小对识别船舶的限制。

关键词： SAR 多视处理船舶检测 ALOS-PALSAR

Global Pediatric Pulmonology Alliance recommendation to strengthen prevention of pediatric seasonal influenza under COVID-19 pandemic

在线全文

学校读者我要写书评

暂无评论

World Journal of Pediatrics 2020年第5期16卷 433-437页

作者： Kun-Ling Shen Leyla Namazova-Baranova Yong-Hong Yang Gary Wing Kin Wong Lanny J.Rosenwasser Lance E.Rodewald Anne Eng Neo Goh Eitan Kerem Chris O'Callaghan T.Bernard Kinane Basil Elnazir Rina Triasih Rosemary Horne Anne B Chang Jim Buttery Ruth A.Etzel Kazunobu ouchi Hilary Hoey Varinder Singh Genesis C.Rivera Spencer SLi Yu Guan Ling Cao Yue-Jie Zheng Lu-Zhao Feng Wu Zhong Zheng-De Xie Bao-Ping Xu Rong-Jun Lin Gen Lu Qiang Qin Chun-Mei Zhu Su-Yun Qian Gang Liu Cheng-Song Zhao Zhuang Wei Yu-Hong Zhao Global Pediatric Pulmonology Alliance(GPPA)Expert Panel on Infectious Diseases&COVID-19 China National Clinical Research Center of Respiratory Diseases Department of Respiratory Medicine of Beijing Children's HospitalCapital Medical UniversityNational Center for Children's HealthBeijingChina Pediatrics and Child Health Research Institute Central Clinical HospitalRussian Academy of SciencesMoscowRussian Federation Department of Respiratory Shenzhen Children's HospitalShenzhenChina Chinese University of Hong Kong Hong Kong SARChina UMKC School of Medicine Kansas CityMOUSA National Immunization Program Chinese Center for Disease Control and PreventionBeijingChina K Women's and Children's Hospital SingaporeSingapore Department of Pediatrics Hadassah Hebrew University Medical CenterJerusalemIsrael UCL Great Ormond Street Institute of Child Health and Great Ormond Street Hospital(GOSH)BRC University College LondonLondonUK Massachusetts General Hospital for Children BostonMAUSA Children's Health Ireland and Trinity College Dublin DublinIreland Department of Paediatric Faculty of MedicinePublic Health and NursingUniversitas Gadjah Mada/Dr.Sardjito HospitalYogyakartaIndonesia Monash University MelbourneAustralia Queensland Children's Hospital BrisbaneAustralia Monash Children's Hospital Menzies School of Health ResearchMelbourneAustralia George Washington University WashingtonDCUSA Department of Pediatrics Kawasaki Medical SchoolKurashiki-CityJapan Department of Pediatrics University of Dublin Trinity CollegeDublinIreland Lady Hardinge Medical College and Assoc Kalawati Saran Children's Hospital New DelhiIndia Center for Medical and Allied Health Sciences New Era UniversityQuezon Citythe Philippines Global Pediatric Pulmonology Alliance Hong Kong SARChina Department of Respiratory the Children's Hospital Affiliated to the Capital Institute of PediatricsBeijingChina School of Population Medicine and Public Health Chinese Academy of Medical Sciences/Peking Union Medical CollegeBeijingChina National Engineering Research Center for the Emergency Drug BeijingChina Nati

The World Health Organization(WHO)announced COVID-19 as a global pandemic in March of 2020[1].The COVID-19 pandemic may persist for a long period of *** prevention and control becomes a complex and challenging task,and such efforts should be *** general measures,such as social distancing,face masks,respiratory hygiene and hand sanitization,will bear fruits for decreasing spread of other respiratory illnesses including influenza,the specific prevention through vaccination is a key focus especially in the upcoming winter and spring seasons[2].

关键词： prevention influenza sustained

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

防老剂对橡胶性能的影响及其选用

合成橡胶工业 1988年第4期 329-336页

作者：山本隆造吕世光日本大内新兴化学工业公司山西省化工研究所东京太原

自1924年Winkelmann发现3-羟基丁醛-a-萘胺缩合物可作为防老剂以来,在半个多世纪中,人们研究了数以千计的化合物的防老效果,提出了多种防老化机理,并开发了品种繁多的防老剂商品。按照化学结构和防护功能,可将防老剂分成如下几类。

关键词：防老剂生胶防护功能移性喷霜抗老剂橡胶性能对苯二胺

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

多视SAR图像交叉谱虚部反演海浪信息

遥感信息 2007年第5期29卷 22-25页

作者：王海鹏金亚秋大内和夫原利允复旦大学日本防卫大学日本海上自卫队

提出利用多视处理子视图交叉谱虚部反演海浪信息的方法。子视图中心频率差分别为400Hz,600Hz和800Hz。所用四幅SAR图像均由JERS-1不同时间采集的。地点为东京附近海域,并有对应的测量所得海浪信息,包括波向、波高和周期。反演结果表明,... 详细信息

提出利用多视处理子视图交叉谱虚部反演海浪信息的方法。子视图中心频率差分别为400Hz,600Hz和800Hz。所用四幅SAR图像均由JERS-1不同时间采集的。地点为东京附近海域,并有对应的测量所得海浪信息,包括波向、波高和周期。反演结果表明,中心频率差为400Hz的处理方法所得结果精度最高,对应的波向和周期信息都与实测数据相差无几。

关键词： SAR 多视处理海浪信息

Global Pediatric Pulmonology Alliance(GPPA)proposal for COVID-19 vaccination in children

在线全文

学校读者我要写书评

暂无评论

World Journal of Pediatrics 2021年第5期17卷 458-461页

作者： Lance E.Rodewald Kun-Ling Shen Yong-Hong Yang Gary Wing-Kin Wong Leyla Namazova-Baranova Lanny J.Rosenwasser Adel S.Alharbi Anne B.Chang Jim Buttery Basil Elnazir Ruth A.Etzel Anne Goh Hilary Hoey Rosemary Home Eitan Kerem Antonella Muraro Chris O’Callaghan Kazunobu ouchi Varinder Singh Jiu-Yao Wang Spencer Li Yu Guanon Yue-Jie Zheng Zhengde Xie Gen Lu Yi Jiang Xing-Wang Li Rong-Meng Jiang Xiao-Chuan Wang Ji-Kui Deng Xiao-Xia Lu Bao-Ping Xu Zhuang Wei Lu-Zhao Feng Zheng-Yan Zhao the Global Pediatric Pulmonology Alliance(GPPA)Counci Global Pediatric Pulmonology Alliance(GPPA)Expert Panel on Infectious Diseases and COVID-19 National Immunization Program Chinese Center for Disease Control and Prevention.BeijingChina China National Clinical Research Center of Respiratory Diseases Department of RespiratoryBeijing Children's hospital.Capital Medical UniversityNational Center for Children's HealthBeijingChina Beijing Children's Hospital Capital Medical UniversityNational Center for Children's HealthBeijingChina Chinese University of Hong Kong.Hong Kong SAR China Pediatrics and Child Health Research Institute Central Clinical HospitalRussian Academy of SciencesMoscowRussian Federation University of Missouri-Kansas City School of Medicine Kansas CityMOUSA Prince Sultan Military Medical City(PSMMC) Ministry of DefenseRiyadhSaudi Arabia Queensland Children's Hospital.Brisbane Australia and Menzies School of Health ResearchDarwinAustralia Monash Children's Hospital Monash UniversityMelbourneAustralia Children's Health Ireland and Trinity College Dublin DublinIreland George Washington University WashingtonDCUSA KK Women’s and Children’s Hospital SingaporeSingapore Department of Pediatrics University of Dublin Trinity CollegeDublinIreland Monash University MelbourneAustralia Department of Pediatrics Hadassah Hebrew University Medical CenterJerusalem.Israel Food Allergy Referral Centre Veneto Region Padua University Hospital PaduaItaly UCL Great Ormond Street Institute of Child Health Great Ormond Street Hospital(GOSH)BRCUniversity College LondonLondonUK Department of Pediatrics.Kawasaki Medical School Kurashiki-cityJapan Lady Hardinge Medical College and Assoc Kalawati Saran Children's Hospital Bangla Sahib MargNew DelhiIndia College of Medicine National Cheng Kung UniversityTainan CityTaiwanChina VITUP International Hospital DalianLiaoningChina China Medicine Education Association Pediatric Committee BeijingChina Department of Respiratory Disease Shenzhen Children's Hospital.ShenzhenChina Research Unit of Critical Infection in Children Chinese Academy of Medical Sciences2019RU016National Clinical Rese

Coronavirus disease 2019(COVID-19)remains a global *** of August 18,2021,the number of reported cases has exceeded 207 million globally,with more than 4.3 million ***-19 has brought devastating losses to human *** overall crude mortality rate is 1-3%.Although pediatric deaths from COVID-19 are rare,they do occur,as over 9,000 children have died from COVID-19 globally to date[1].With the gradual and broad application of COVID-19 vaccines around the world,the rising proportion of cases among children and unvaccinated young adults demands *** to World Health Organization surveillance data.

关键词： mortality globally Alliance

帕金森病早期小胶质细胞的激活和多巴胺能神经末梢的缺失

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

世界核心医学期刊文摘（神经病学分册） 2005年第6期1卷 14-14页

作者： ouchi Y. Yoshikawa E. Sekine Y. 王英鹏 Positron Medical Center Hamamatsu Medical Center 5000 Hirakuchi Hamakita 434- 0041 Japan Dr.

Neuroinflammatory glial response may contribute to degenerative processes in Parkinson’ s disease (PD). To investigate changes in microglial activity associated with changes in the presynaptic dopamine transporter density in the PD brain in vivo, we studied 10 early- stage drug- naive PD patients twice using positron emission tomography with a radiotracer for activated microglia [11C](R)- PK11195 and a dopamine transporter marker [11C]CFT. Quantitative levels of binding potentials (BPs) of [11C](R)- PK11195 and [11C]CFT in the nigrostriatal pathway were estimated by compartment analyses. The levels of [11C](R)- PK11195 BP in the midbrain contralateral to the clinically affected side were significantly higher in PD than that in 10 age- matched healthy subjects. The midbrain [11C](R)- PK11195 BP levels significantly correlated inversely with [11C]CFT BP in the putamen and correlated positively with the motor severity assessed by the Unified Parkinson’ s Disease Rating Scale in PD. In healthy subjects, the [11C](R)- PK11195 BP in the thalamus and midbrain showed an age- dependent increase. In vivo demonstration of parallel changes in microglial activation and corresponding dopaminergic terminal loss in the affected nigrostriatal pathway in early PD supports that neuroinflammatory responses by intrinsic microglia contribute significantly to the progressive degeneration process of the disease and suggests the importance of early therapeutic intervention with neuroprotective drugs.

关键词：帕金森病多巴胺能小胶质细胞黑质纹状体通路壳核放射性示踪剂突触前转运蛋白药物治疗健康受试者

PET用于帕金森病纹状体外小神经胶质细胞活化播散的研究

在线全文

学校读者我要写书评

暂无评论

中华核医学与分子影像杂志 2017年第3期37卷 192-192页

作者：李梦婷兰晓莉唐军华中科技大学同济医学院附属协和医院核医学科武汉430022 苏州大学附属第二医院核医学科 215004

目的神经炎性胶质反应有助于推进帕金森病（PD）的退行性变过程。然而，小神经胶质细胞发展的模式仍不清楚。方法[11C]DPA713，是一种选择性小神经胶质细胞激活PET示踪剂。本研究应用[11C]DPA713 PET显像量化评估早期PD患者神经炎性变... 详细信息

目的神经炎性胶质反应有助于推进帕金森病（PD）的退行性变过程。然而，小神经胶质细胞发展的模式仍不清楚。方法[11C]DPA713，是一种选择性小神经胶质细胞激活PET示踪剂。本研究应用[11C]DPA713 PET显像量化评估早期PD患者神经炎性变中小神经胶质细胞的激活。选取11个不伴有痴呆的PD患者（Hoehn和Yahr分期为1-2期）进行2次[11C]DPA713PET扫描．2次显像时间相隔1年。通过简化的参考组织模型估算结合潜能（BPND）。应用智能体素和感兴趣区分析比较组间的BPND。结果[11C]DPA713 BPND在帕金森病患者纹状体外的枕叶、颞叶和顶叶皮质摄取呈明显增加，1年后发现在颞叶和枕叶皮质的大脑区域与显像剂结合程度更高。结论本研究结果表明，纹状体外的小神经胶质细胞活化播散是PD早期阶段病理生理变化之一。

关键词：帕金森病(PD) 小神经胶质细胞 [11C]DPA713 正电子发射断层显像术(PET)