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Photosynthetically active radiation retrieval based on HJ-1A/B satellite data

Science china Earth Sciences 2010年第S1期53卷 81-91页

作者： LI Li1,XIN XiaoZhou1,SU GaoLi1,2 & LIU QinHuo1 1 State Key Laboratory of Remote Sensing Science,Institute of Remote Sensing Applications,Chinese Academy of Sciences,Beijing 100101,china 2 Zhejiang Climate center,Hangzhou 3.0017,china 1. State Key Laboratory of Remote Sensing Science Institute of Remote Sensing Applications Chinese Academy of Sciences Beijing 100101 China2. Zhejiang Climate Center Hangzhou 310017 China

Photosynthetically active radiation(PAR) is essential for plant photosynthesis and carbon cycle,and is also important for meteorological and environmental *** advance china's disaster and environmental monitoring capabilities,the HJ-1A/B satellites have been placed in Earth *** of their environmental monitoring objectives is the study of *** simulated direct solar,scattered and environment radiation between 400 and 700 nm under different atmospheric parameters(solar zenith angle,atmospheric water vapor,atmospheric ozone,aerosol optical thickness,surface elevation and surface albedo),and then established a look-up table between these input parameters and *** on the look-up table,we used HJ-1A/B aerosol and surface albedo outputs to derive the corresponding *** of inversed instantaneous and observed PAR values using HJ-1 Heihe experimental data had a root mean square error of 25.2 W m-2,with a relative error of 5.9%.The root mean square error for accumulated daily PAR and observed values was 0.49 MJ m-2,with a relative error of 3.5%.Our approach improved significantly the computational efficiency,compared with using directly radiation transfer *** also studied the sensitivity of various input parameters to photosynthetically active radiation,and found that solar zenith angle and atmospheric aerosols were sensitive PAR *** albedo had some effect on PAR,but water vapor and ozone had minimal impact on PAR.

关键词： Photosynthetically active radiation 6S HJ-1A/B satellites

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Comments on scaling effect of reciprocity in BRDF study

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Progress in Natural Science:Materials International 2004年第3期 95-96页

作者： ZHAO Hongrui* and WANG Jindi(Research center for Remote Sensing and GIS, Department of Geography, Beijing Normal University, Beijing Key Laboratory for Remote Sensing of Environment and Digital Cities, Beijing 100875, china) ResearchcenterforRemoteSensingandGIS DepartmentofGeographyBeijingNormalUniversityBeijingKeyLaboratoryforRemoteSensingofEnvironmentandDigitalCitiesBeijing100875China

Reciprocity principle is a common theory in electromagnetics and optics. It is also one of the general principles of the radiation transformation theory. However, in many remote sensing studies, this principle cannot be always supported by experimental data, especially when the scaling effect of the remote sensing image pixel is considered. The debate over the issue of whether the reciprocity principle can be used as a fundamental standard in evaluating the effectiveness of remote sensing observations has lasted for years. Using geometrical optics model, Li and Wan proved the existence of the scaling effect in applying the reciprocity principle to a remote sensing image pixel in 1998. In 2002, Snyder challenged Li’s proof, and attempted to prove that reciprocity principle is universally valid without any scale limitation. In this paper, we will argue with Snyder’s theory and point out that Snyder’s theory had neglected an important condition used in Li’s proof and, as a result, drawn the wrong conclusion. Here we will restate Li’s condition in his demonstration and offer a further proof to verify that reciprocity principle cannot be applied unconditionally to the study of bi directional reflectance distribution function (BRDF) of land surfaces in field or satellite remote sensing observation scale.

关键词： BRDF reciprocity scaling effect.

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Improving radiotherapy for gliomas:Experience from Guangzhou SunYat-sen University Cancer center

Improving radiotherapy for gliomas:Experience from Guangzhou...

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中国抗癌协会神经肿瘤专业委员会第八届学术会议

作者： XIA Yunfei Department of radiation Oncology,Cancer center,SunYat-sen University of Medical Sciences

＜正＞External radiotherapy has an important role as an adjuvant treatment to surgery in cerebral glioma patients. Before 1990s,the treatment policy for patients with cerebral Grade I glioma is surgery *** patients wi...

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The Re-evaluation of 84Rb Decay Data

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中国核科技报告 1996年第S3期 83-90页

作者： Huang Xiaolong Zhou Chunmei (china Nuclear Data center, CIAE )

The decay data forRb were re-evaluated. The comprehensive analysis and theoretical calculations were done. The energies and intensities of γ rays and their internal conversion coefficients, energies and intensities of Auger electrons, conversion electrons and x-rays, were recommended. The decay scheme was also given. Finally the balance of radiation rays intensities and energies was checked.

关键词： The Re-evaluation of Rb Decay Data Re

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Variation in transboundary flow of Nujiang River and its correlation with summer monsoon under the effect of the Longitudinal Range-Gorge

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Science Bulletin 2007年第S2期 148-155页

作者： YOU WeiHong~(1+) GUO ZhiRong~(1,2) HE DaMing~3.1 Department of Atmospheric Sciences,School of Resource Environment and Earth Science,Yunnan University,Kunming 650091,china 2 Department of Atmospheric Sciences,Nanjing Information Engineering University,Nanjing 210044,china 3.Asia International Rivers center,Yunnan University,Kunming 650091,china

The relationship between the variations of the Nujiang River transboundary flow and the summer mon- soon activity under the topographical effect of the Longitudinal Range-Gorge（LRG）is *** study is based on statistical analysis of the observed river flow data,and their correlation with the reanalyzed U/V wind fields of the National centers for Environment Prediction（NCEP）and the National center for Atmospheric Research（NCAR）,and the data of the Outgoing Longwave radiation（OLR）of the National Oceanic and Atmospheric Administration（NOAA）.It is concluded that the transboundary river flow is predominantly concentrated in the wet or rainy season（from May to October）,particularly in the summer or flood season（from June to August）.There is a clear tendency for the transboundary river flow to increase with time since 1970s,particularly apparent since *** to the topographical"east-west barrier and north-south corridor"effects of the LRG,the summer river flow variations are largely correlated with winds of the southerly and northerly at both high and low *** contrast, the river flow variations are apparently correlated wIth winds of the easterly and westerly only at the high altitudes,not at the low *** correlation between the OLR and the river flow varla- tions is also *** relationships are quantitatively described using two summer monsoon indices proposed in this *** index MI2includes both dynamical and thermodynamical effects and givee a generally good representation of the transboundary river flow variations in the LRG region of the Nujiang River *** MI2represents stronger summer monsoon activity and higher transboundary river flow,while smaller MI2suggests weaker monsoon circulation and lower water flow.

关键词： Longitudinal Range-Gorge(LRG) Nujiang River transboundary river flow summer monsoon monsoon index

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A BRIEF DESCRIPTION OF THE SECOND VERSION OF CHINESE EVALUATED NUCLEAR DATA LIBRARY CENDL—2

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中国核科技报告 1991年第S2期 7-9页

作者： Chinese Nuclear Data center ( china INSTITUTE OF ATOMIC ENERGY )

The Chinese Nuclear Data center and Nuclear Data Committee of chinastarted evaluation and compilation work for CENDL-2 at the beginning *** main purpose for making CENDL-2 is to develop and improve theCENDL-1,such as to extend the incident neutron energy to thermal energy re-gion,supplement the data type of evaluations,improve and update the earlierevaluations,and add some newly evaluations to the ***-2 wasfinally completed in July 1991,it contains data for main engineering,construc-tion and fuel materials in nuclear reactors,radiation shielding materials and soon.

关键词： data ENDF A BRIEF DESCRIPTION OF THE SECOND VERSION OF CHINESE EVALUATED NUCLEAR DATA LIBRARY CENDL

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低能轻离子输运的单参数描述

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物理学报 1994年第3期43卷 505-515页

作者：罗正明侯氢四川大学原子核科学技术研究所辐射物理中心

低能离子输运的一个重要特点是它有可能被一个简单的参数所确定，我们发现离子的标度输运截面即是具有这种重要性质的参数。这种单值对应关系反映了不同能量的不同靶一离子的组合在输运上的内在相似性。本文给出了标度输运截面的定义，... 详细信息

低能离子输运的一个重要特点是它有可能被一个简单的参数所确定，我们发现离子的标度输运截面即是具有这种重要性质的参数。这种单值对应关系反映了不同能量的不同靶一离子的组合在输运上的内在相似性。本文给出了标度输运截面的定义，讨论了此标度参数标定离子输运行为的理论依据。同时通过应用离子输运双群模型所作的大量计算检验了单参数标定离子输运行为这一结论。最后给出以标度输运截面为自变量的离子反射系数和平均投影射程的经验公式。

关键词：轻离子低能输运标度输运截面

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Effects of 4DVAR with multifold observed data on the typhoon track forecast

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Chinese Science Bulletin 2003年第S2期48卷 93-98页

作者： WANG Yunfeng, WANG Bin, MA GANG & WANG Yushun 1. LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences. Beijing 100029, china: 2. National Satellite Meteorological center, Beijing 100081. china Chinese Acad Sci Inst Atmospher Phys LASG Beijing 100029 Peoples R China Natl Satellite Meteorol Ctr Beijing 100081 Peoples R China

Effects of 4-dimension variational data assimi-lation (4DVAR) with multifold observed data on the typhoontrack forecast are studied, by using the MM5V3.model, theRTTOVS-5 model and their adjoint models. The data usedfor assimilation include large-scale background fields data,bogus data, cloud-derived wind data, satellite inverse data,and high resolution infrared radiation sounder data (HIRS).There are 5 typhoon cases are used to perform the numericalexperiments and assimilation experiments. The numericalresults show that with 4DVAR the initial fields can be greatlyimproved and the initial typhoon structure can be clearlydescribed.

关键词： multifold observed data 4DVAR typhoon track. DOI: 10.13.0/03.d0456

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Pigment Epithelium-Derived Factor Enhances Tumor Response to radiation by Normalizing Vasculature in Xenografted Model of Lung Cancer

Pigment Epithelium-Derived Factor Enhances Tumor Response to...

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中国抗癌协会肿瘤放射治疗专业委员会学术大会中美放射肿瘤协会（SANTRO）第三届学术会议2012济南国际放射肿瘤学论坛

作者： Zumin Xu~(*1,2,3.,Fang Peng~(*1,2),Yufang Zuo~3.Yuanyuan Chen~1,Xiao Hu~1,Qichao Zhou~1,Honglian Ma~1, Yong Bao~1,Ming Chen~(1,2) 1 Department of radiation Oncology,Sun Yat-Sen University Cancer center,651 East Dongfeng Road, Guangzhou 510060,Guangdong Province,china 2 State Key Laboratory of Oncology in South china,Guangzhou 510060,Guangdong Province,china 3.Cancer center,Affiliated Hospital of Guangdong Medical College,Zhanjiang 524000,Guangdong Province,china

The purpose of the present study is to explore the effects of PEDF on tumor vascular normalization and the therapeutical potential of PEDF in combination with radiation and the underlying mechanism on lung *** observed that blood vessels in PEDF-treated xenografts were less irregular,less tortuous,more uniform in caliber in contrary to these of control group in Lewis lung cancer ***,the thickness of basement membrane were remarkably reduced and pericyte coverage were significantly increased by PEDF,which is considered to be a key property of vascular *** also found that tumor hypoxic fraction decreased on the 3.7 day after PEDF treatment as measured by pimonidazole staining,which indicated that intratumoral hypoxia were improved during the 3.7 day after PEDF *** results together show that PEDF can create a vascular normalization window from the 3.to the 7 day after treatment in Lewis lung cacner ***,a significant tumor growth delay effect was shown when radiaiton delivered during the "normalization vasculature window" created by *** also found that PEDF might enhance the tumor growth delay effect of radiation by induction of cancer cell ***,our data provide the basis for the scheduling of PEDF in combination with radiation to improve anti-tumor efficacy on lung cancer,which is of translational *** addition,these findings imply the potential role of PEDF as an adjuvant agent for lung cancer treatment.

关键词： Pigment epithelium-derived factor Vascular normalization radiation Anti-angiogenesis Lung cancer

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肺癌在线自适应放射治疗中国专家共识

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中国肿瘤 2024年第4期33卷 255-261页

作者：陈明王绿化傅小龙尹勇黄晓延毕楠朱正飞孙建国薛建新陈大卫张莉华南恶性肿瘤防治全国重点实验室广东省鼻咽癌诊治研究重点实验室广东省恶性肿瘤临床医学研究中心中山大学肿瘤防治中心中山大学-国科离子放射治疗前沿技术联合实验室中华医学会放射肿瘤治疗学分会中国临床肿瘤学会肿瘤放射治疗专家委员会中山大学肿瘤防治中心广东广州510060 中国医学科学院肿瘤医院北京100021 上海交通大学附属胸科医院上海200030 山东省肿瘤医院山东济南250117 复旦大学附属肿瘤医院上海200032 重庆市新桥医院重庆400030 四川大学华西医院四川成都610041 华中科技大学附属同济医院湖北武汉430030 不详

肺癌是我国发病率和死亡率最高的恶性肿瘤。精准放疗显著提高了肿瘤控制率、降低了不良反应,其中在图像引导放疗基础上发展起来的在线自适应放射治疗可以根据实时影像反馈动态调整放疗区域和剂量,已逐步应用于肺癌治疗。为规范临床应用... 详细信息

肺癌是我国发病率和死亡率最高的恶性肿瘤。精准放疗显著提高了肿瘤控制率、降低了不良反应,其中在图像引导放疗基础上发展起来的在线自适应放射治疗可以根据实时影像反馈动态调整放疗区域和剂量,已逐步应用于肺癌治疗。为规范临床应用、推动技术发展与临床协作,特制定本专家共识。该共识结合理论与实践,阐述肺癌在线自适应放射治疗的物理技术要求、临床实施规范和常见临床问题,以期更好地为放疗同道了解和开展该技术提供参考,使更多肺癌患者能从放射治疗中获益。

关键词：肺癌放射治疗在线自适应放射治疗专家共识

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