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基于波段组合优化光谱指数的冬小麦LAI估算

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江苏农业科学 2022年第13期50卷 207-218页

作者：吾木提·艾山江尼加提·卡斯木买买提·沙吾提伊犁师范大学资源与生态研究所新疆伊宁835000 伊犁师范大学生物与地理科学学院新疆伊宁835000 新疆大学地理与遥感科学学院新疆乌鲁木齐830046

叶面积指数(LAI)是表示植被利用光能状况和冠层结构的一个综合指数,与作物产量密切相关。高光谱遥感数据具有连续、高光谱分辨率等特点,为估算农作物生理生化参数和冠层结构参数提供了重要手段。为挖掘高光谱数据估算LAI的最优波段组合... 详细信息

叶面积指数(LAI)是表示植被利用光能状况和冠层结构的一个综合指数,与作物产量密切相关。高光谱遥感数据具有连续、高光谱分辨率等特点,为估算农作物生理生化参数和冠层结构参数提供了重要手段。为挖掘高光谱数据估算LAI的最优波段组合以及提高估算精度,以冬小麦作为研究对象,野外实测不同生长阶段(起身、拔节、开花阶段)的冠层高光谱数据,并对其进行不同数学变换处理,包括原始光谱、一阶导数光谱和连续统去除。利用3种不同预处理的冠层高光谱数据构建30种常用植被指数和4种优化光谱指数,比较常用植被指数与优化光谱指数对冬小麦LAI的响应,建立估算冬小麦LAI的单变量和多变量回归模型,对其进行精度验证,并筛选出最优估算模型。结果表明,随着生育期的推进,可见光波段范围内,冬小麦冠层光谱反射率较低、吸收较强,LAI对连续统去除光谱的影响较大,呈负相关;近红外波段范围内不同生育期间的差异较大,随着LAI的增大,冠层光谱的红边位置出现了“红移”现象;基于一阶导数的优化植被指数(NDSI和RSI)与LAI相关系数达到0.8;从估算模型来看,基于一阶导数的RSI(627 nm,774 nm)单变量二次多项式模型表现较佳,R^(2)为0.809,RMSE为0.401,基于NDSI_(or(724 nm,987 nm))、RSI_(fod(627 nm,774 nm))、CI_(cr(686 nm,744 nm))建立的PLSR模型拟合效果最佳,模型精度为R 2=0.817、RMSE=0.428和RPD=2.250,说明本研究所构建的优化光谱指数能够有效进行冬小麦LAI的估算,可以为精准农业提供方法上的参考。

关键词：叶面积指数光谱植被指数冬小麦拔节期

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Baseline neutrophil-lymphocyte ratio and platelet-lymphocyte ratio appear predictive of immune treatment related toxicity in hepatocellular carcinoma

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World Journal of Gastrointestinal Oncology 2023年第11期15卷 1900-1912页

作者： Sirish Dharmapuri umutÖzbek Hiren Jethra Tomi Jun Thomas U Marron Anwaar Saeed Yi-Hsiang Huang Mahvish Muzaffar Matthias Pinter Lorenz Balcar Claudia Fulgenzi Suneetha Amara Arndt Weinmann Nicola Personeni Bernhard Scheiner Tiziana Pressiani Musharraf Navaid Bertram Bengsch Sonal Paul Uqba Khan Dominik Bettinger Naoshi Nishida Yehia Ibrahim Mohamed Arndt Vogel Anuhya Gampa James Korolewicz Antonella Cammarota Ahmed Kaseb Peter R Galle Anjana Pillai Ying-Hong Wan Alessio Cortellini Masatoshi Kudo Antonio D’Alessio Lorenza Rimassa David James Pinato Celina Ang Tisch Cancer Institute Icahn School of Medicine at Mount SinaiNew YorkNY 10029United States Department of Population Health Science and Policy Icahn School of Medicine at Mount SinaiNew YorkNY 10029United States Department of Data Analytics Harrisburg Harrisburg University of Science and TechnologyHarrisburdPA 17101United States SEMA4 StamfordCT 06902United States Division of Medical Oncology Kansas University of Kansas Cancer CenterKansasMO 66160United States Division of Gastroenterology and Hepatology Taipei Veterans General HospitalTaipei 11217Taiwan Department of Internal Medicine Brody School of MedicineEast Carolina UniversityGreenvilleNC 27858United States Department of Internal Medicine III Division of Gastroenterology and HepatologyMedical University of ViennaVienna 1090Austria Department of Surgery and Cancer Imperial College LondonHammersmith Hospital LondonLondon W120HSUnited Kingdom Department of Hepatology Johannes Gutenberg-University Medical CentreNiedersachsen 30625Germany Medical Oncology Unit ASST GardaVia Lungomella ValsecchiBresciaManerbio 25025Italy Medical Oncology and Hematology Unit Humanitas Cancer CenterIRCCS Humanitas Research HospitalMilanRozzano 20089Italy Department of Medicine II Univ Med Ctr FreiburgHugstetter Str 55University Hospital FreiburgFreiburg D-79106Germany Department of Oncology Baltimore LifeBridge HealthBaltimoreMD 21215United States Division of Hematology and Oncology Weill Cornell Medical CollegeNY 10065United States Department of Gastroenterology and Hepatology Kindai University Faculty of MedicineOsaka 577-8502Japan Department of Gastrointestinal Medical Oncology The University of Texas MD Anderson Cancer CenterHoustonTX 77030United States Department of Gastroenterology Hepatology and Endocrinology HannoverArndt VogelMedical School HannoverCarl-Neubergstr.Hannover 30659Germany Department of Hepatology Rush University Medical Group 1725 W Harrison St Ste 158ChicagoIL 60612United States Department of Biomedica

BACKGROUND A well-recognized class effect of immune checkpoint inhibitors(ICI)is immune-related adverse events(IrAEs)ranging from low grade toxicities to life-threatening end organ damage requiring permanent discontinuation of *** are reported in300 was significantly associated with a lower incidence of grade≥2 IrAEs(OR=0.40;P=0.044).Similarly,a trend was observed between NLR>5 and lower incidence of grade≥2 IrAEs(OR=0.58;P=0.097).Multivariate analyses confirmed PLR>300 as an independent predictive marker of grade≥2 IrAEs(OR=0.26;P=0.011),in addition to treatment with programmed cell death ligand 1(PD-1)/cytotoxic T lymphocyte-associated protein-4(OR=2.57;P=0.037)and PD-1/tyrosine kinase inhibitor(OR=3.39;P=0.01)*** use was not associated with IrAE incidence(OR=1.02;P=0.954).Patients treated with steroids had a>2-fold higher incidence of gr

关键词： Neutrophil-lymphocyte ratio Platelet-lymphocyte ratio Inflammatory biomarkers Immunotherapy Immune toxicity

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吐尔根杏花沟新疆野杏对不同坡向的适应性

东北林业大学学报 2023年第8期51卷 35-39页

作者：陈晨闫俊杰崔东吾木提·艾山江牛克昌伊犁师范大学伊宁835000

以吐尔根杏花沟实地路线调查信息、WorldView-3卫星遥感影像和SRTM DEM数字高程模型为数据材料,采用遥感面向对象提取与数字地形分析方法,统计新疆野杏(Prunus armeniaca)面积和覆盖率,研究野杏对不同坡向的适应性。结果表明:(1)野杏面... 详细信息

以吐尔根杏花沟实地路线调查信息、WorldView-3卫星遥感影像和SRTM DEM数字高程模型为数据材料,采用遥感面向对象提取与数字地形分析方法,统计新疆野杏(Prunus armeniaca)面积和覆盖率,研究野杏对不同坡向的适应性。结果表明:(1)野杏面积阳坡多于阴坡,而野杏覆盖率阴坡高于阳坡。(2)野杏覆盖率在不同坡向上都有随海拔上升先递增、后递减的垂直地带性。(3)野杏覆盖率在不同坡向上都随坡度增陡而升高。沟谷西南部、野杏面积占优的阳坡和覆盖率占优的阴坡、中山带下部中段约1100~1500 m的海拔梯度、部分较陡坡面等适应野杏生存的区域,可因地制宜地开展封育更新、恢复重建、引种栽培等实验与措施。

关键词：新疆野杏坡向遥感地理信息技术吐尔根杏花沟

Impact of adjuvant treatment modalities on survival outcomes in curatively resected pancreatic and periampullary adenocarcinoma

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Chinese Journal of Cancer Research 2015年第4期27卷 408-416页

作者： Nedim Turan Mustafa Benekli Olcun Umit Unal ?lkay Tugba Unek Didem Tastekin Faysal Dane Efnan Alg?n Sukran Ulger Tulay Eren Turkan Ozturk Topcu Esma Turkmen Nalan Akgül Babacan Gulnihal Tufan Zuhat Urakci Basak Oven Ustaalioglu Ozlem Sonmez Uysal Ozlem Balvan Ercelep Burcu Yapar Taskoylu Asude Aksoy Mustafa Canhoroz umut Demirci Erkan Dogan Veli Berk Ozan Balakan Ahmet ?iyar Ekinci Mukremin Uysal ?brahim Petekkaya Sel?uk Cemil Ozturk ?nder Tonyal? Bülent ?etin Mehmet Naci Aldemir Kaan Helvac? Nuriye Ozdemir ?lhan Oztop Ugur Coskun Aytug Uner Ahmet Ozet Suleyman Buyukberber Department of Medical Oncology Faculty of Medicine Cumhuriyet University Department of Medical Oncology Faculty of Medicine Gazi University Department of Medical Oncology Faculty of Medicine Dokuz Eylul University Department of Medical Oncology Faculty of Medicine Necmettin Erbakan University Department of Medical Oncology Faculty of Medicine Marmara University Department of Radiation Oncology Faculty of Medicine Gazi University Department of Medical Oncology Numune Education and Research Hospital Department of Medical Oncology Faculty of Medicine Karadeniz Technical University Department of Medical Oncology Faculty of Medicine Trakya University Department of Medical Oncology Rize Education and Research Hospital Department of Medical Oncology Faculty of Medicine Dicle University Department of Medical Oncology Dr.Lutfi Kirdar Kartal Education and Research Hospital Department of Medical Oncology Sakarya Education and Research Hospital Department of Medical Oncology Faculty of Medicine Pamukkale University Department of Medical Oncology Faculty of Medicine Inonu University Department of Medical Oncology Faculty of Medicine Firat University Department of Medical Oncology Dr.Abdurrahman Yurtaslan Education and Research Hospital Department of Medical Oncology Faculty of Medicine Yuzuncu Yil University Department of Medical Oncology Faculty of Medicine Erciyes University Department of Medical Oncology Faculty of Medicine Sutcu Imam University Department of Medical Oncology Diyarbakir Education and Research Hospital Department of Medical Oncology Faculty of Medicine Kocatepe University Department of Medical Oncology Dr.Ersin Arslan State Hospital Department of Medical Oncology Education and Research Hospital Ad?yaman University Department of Medical Oncology Faculty of Medicine Mustafa Kemal University Department of Medical Oncology Faculty of Medicine Ataturk University

Background： We examined the impact of adjuvant modalities on resected pancreatic and periampullary adenocarcinoma（PAC）.Methods： A total of 563 patients who were curatively resected for PAC were retrospectively analyzed between 2003 and ***： Of 563 patients, 472 received adjuvant chemotherapy（CT） alone, chemoradiotherapy（CRT） alone, and chemoradiotherapy plus chemotherapy（CRT-CT） were analyzed. Of the 472 patients, 231 were given CRT-CT, 26 were given CRT, and 215 were given CT. The median recurrence-free survival（RFS） and overall survival（OS） were 12 and 19 months, respectively. When CT and CRT-CT groups were compared, there was no significant difference with respect to both RFS and OS, and also there was no difference in RFS and OS among CRT-CT, CT and CRT groups. To further investigate the impact of radiation on subgroups, patients were stratified according to lymph node status and resection margins. In node-positive patients, both RFS and OS were significantly longer in CRT-CT than CT. In contrast, there was no significant differencebetween groups when patients with node-negative disease or patients with or without positive surgical margins were ***： Addition of radiation to CT has a survival benefit in patients with node-positive disease following pancreatic resection.

关键词： Pancreatic adenocarcinoma adjuvant chemotherapy(adjuvant CT) adjuvant radiotherapy

气象因素对乌鲁木齐市PM_(2.5)浓度影响分析

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环境工程 2018年第11期36卷 64-69页

作者：盛永财玉米提.哈力克阿不都拉.阿不力孜新疆大学资源与环境科学学院乌鲁木齐830046 新疆大学旅游学院乌鲁木齐830046

基于乌鲁木齐市大气污染物数据,对乌鲁木齐市2016年空气质量变化做趋势分析。利用乌鲁木齐市2016年同期气象要素,通过相关分析和主成分分析方法探讨了气象要素对PM_(2.5)浓度的影响。结果表明:1)PM_(2.5)、PM_(10)、SO_2、NO_2、CO的浓... 详细信息

基于乌鲁木齐市大气污染物数据,对乌鲁木齐市2016年空气质量变化做趋势分析。利用乌鲁木齐市2016年同期气象要素,通过相关分析和主成分分析方法探讨了气象要素对PM_(2.5)浓度的影响。结果表明:1)PM_(2.5)、PM_(10)、SO_2、NO_2、CO的浓度全年变化趋势与空气质量指数(AQI)的变化趋势基本一致,O_3的浓度变化趋势与AQI变化趋势完全相反;2)PM_(2.5)浓度与CO、气压和相对湿度呈显著正相关,降水量、风速、气温和水气压与PM_(2.5)浓度呈显著负相关。

关键词：气象因素 PM2.5浓度相关分析主成分分析乌鲁木齐市

Mitoquinone attenuates blood-brain barrier disruption through Nrf2/PHB2/OPA1 pathway after subarachnoid hemorrhage in rats

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Mitoquinone attenuates blood-brain barrier disruption throug...

第十四届中国医师协会神经外科医师年会

作者： Tongyu Zhang Pei Wu Keren Zhou Lingyun Wu Zhiyi Xie Weilin Xu Xu Luo Peng Li umut Ocak Pinar Eser Ocak Zachary D.Travis Jiping Tang Huaizhang Shi John H.Zhang Department of Neurosurgery The First Affiliated Hospital of Harbin Medical University Department of Physiology and Pharmacology Loma Linda University Department of Earth and Biological Sciences Loma Linda University

Background and Purpose— Mitochondrial dysfunction is involved in the mechanism of early brain injury（EBI） following subarachnoid hemorrhage（SAH）. Blood-brain barrier disruption is a devastating outcome in the early stage of SAH. In this study, we aimed to investigate the role of a mitochondria-related drug Mitoquinone（MitoQ） in blood-brain barrier disruption after SAH in rats. Methods— A total of 181 male Sprague–Dawley SAH rats with the endovascular perforation model were utilized. Intraperitoneal MitoQ was given 1 hour（h） post-SAH. Cerebroventricular ML385, an inhibitor of NF-E2-related factor 2（Nrf2） and Small interfering ribonucleic acid（siRNA） for Prohibitin 2（PHB2） were injected respectively 24 h and 48 h before SAH. Neurological function evaluation was performed before sacrifice. SAH grade was measured during the sacrifice of each animal. Brain water content was performed at 24 h. Coimmunoprecipitation was used to demonstrate the relationship of proteins Nrf2 and PHB2. Mitochondrial and cytoplasmic fractions were gathered using mitochondria isolation kits. Pathway related proteins were investigated with Western blot and immunofluorescence staining. Transmission electron microscopy was performed for mitochondrial morphology. Results— Expression of Nrf2 levels peaked at the 3 h time point following SAH and then decreased to normal levels at 24 h, while PHB2 and Optic Atrophy 1（OPA1） decreased at 24 h and 72 h after SAH compared with the Sham group. MitoQ treatment attenuated neurological deficits and brain edema, thereby resulting in a decreased expression of Albumin, while an increase of Nrf2, PHB2, OPA1 and Claudin-5 proteins compared with SAH+vehicle group. With co-immunoprecipitation, Nrf2 and PHB2 were further demonstrated to show their interaction. And MitoQ administration lead to more binding of the two proteins. ML385 abolished the effects of MitoQ on neurobehavior and protein levels post-SAH. Similarly, PHB2 siRNA reversed the neuroprotection of MitoQ

关键词： Mitoquinone NF-E2-related factor 2 Prohibitin 2 Optic Atrophy 1 Blood-brain barrier disruption Subarachnoid hemorrhage

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塔里木河下游胡杨林胸径结构及林木分布特征

植物学通报 2008年第6期25卷 728-733页

作者：王金山哈力克.玉米提 Bernd Cyffka 吾斯曼.库尔班彭树宏新疆大学资源与环境科学学院乌鲁木齐830046 新疆绿洲生态重点实验室乌鲁木齐830046 新疆塔里木河流域管理局库尔勒841000 德国埃希施塔特-因戈尔施塔特大学地理系埃希施塔特85071

采用"面"上宏观调查与"点"上典型研究相结合,集中对塔里木河下游阿拉干断面100hm2的胡杨(Populus euphratica)林木分布与胸径结构进行了调查。结果发现,在距河道0-20m的范围内,胸径为0-4cm的幼龄胡杨占最多,达到13.24%。以后随着离河道... 详细信息

采用"面"上宏观调查与"点"上典型研究相结合,集中对塔里木河下游阿拉干断面100hm2的胡杨(Populus euphratica)林木分布与胸径结构进行了调查。结果发现,在距河道0-20m的范围内,胸径为0-4cm的幼龄胡杨占最多,达到13.24%。以后随着离河道距离的增加,幼龄胡杨所占比例逐渐减小。胸径分布范围简单,胸径为16-36cm的林木株数在胡杨林中所占的比例最多。另外,随着离河道距离的增加,胸径在48cm以上的过熟林和衰老林的比例逐渐增多。距河道0-200m的范围内,胡杨分布占整个胡杨林的80%以上。其中以疏失度为0-50%的长势较好的胡杨为主。在200-400m的范围内,疏失度为50%-75%的长势较差的过熟林和衰老林的比例开始增多。距河道400m以上,胡杨密度开始急剧下降,胡杨株数所占的比例几乎下降到5%以下。

关键词：胸径结构胡杨塔里木河林木分布

塔里木河下游阿拉干断面胡杨枝下高对应急输水的响应

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生态环境学报 2009年第1期18卷 286-291页

作者：汪飞玉米提.哈力克 B.Conradie B.Kleinschmit J.Kuechler 新疆大学资源与环境科学学院新疆乌鲁木齐830046 新疆绿洲生态重点实验室新疆乌鲁木齐830046 德国柏林理工大学景观设计与环境规划研究所德国柏林10623

根据近5a来对塔里木河下游阿拉干断面胡杨林(Populus euphratica Oliv.)的监测数据和不同离河距离的地下水位监测信息,结合"面"上宏观调查与"点"上典型研究,集中对100hm2长期监测样方内的4499棵胡杨树进行了详细的调查,将胡杨个体实测... 详细信息

根据近5a来对塔里木河下游阿拉干断面胡杨林(Populus euphratica Oliv.)的监测数据和不同离河距离的地下水位监测信息,结合"面"上宏观调查与"点"上典型研究,集中对100hm2长期监测样方内的4499棵胡杨树进行了详细的调查,将胡杨个体实测数据和卫星影像信息进行对比,分析了塔里木河下游胡杨枝下高对应急生态输水的响应。结果显示,塔里木河下游的胡杨具有伴河生长的特性,不同等级枝下高的胡杨都主要分布在距离河道200m的范围,且其分布都与离河道距离呈显著负相关关系;应急输水后,不同离河距离的胡杨枝下高都有不同程度的下降,河道附近100m的范围内下降幅度最大,达到了0.36m,枝下高的下降主要是由于胡杨茎部和基部萌生新枝所引起的,说明应急输水对于胡杨的自然更新产生了积极的影响。

关键词：塔里木河应急输水胡杨枝下高

塔里木河下游生态输水过程中荒漠河岸林活力恢复监测

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生态环境学报 2009年第5期18卷 1898-1902页

作者：沙代提.木沙玉米提.哈力克托乎提.艾合买提 Bernd Cyffka 柴政新疆大学资源与环境科学学院新疆乌鲁木齐830046 新疆绿洲生态教育部重点实验室新疆乌鲁木齐830046 新疆塔里木河流域管理局新疆库尔勒841000 德国埃希施塔特-因戈尔施塔特大学地理系德国埃希施塔特85071

根据近5年来对塔里木河下游荒漠河岸林植被的监测数据,分析了生态输水后植物活力的恢复状况。结果显示:应急生态输水增加了塔里木河下游的生物多样性,使原本面临死亡的荒漠河岸植被重新复活,而且不同程度上促进了胡杨群落的自然更新;在... 详细信息

根据近5年来对塔里木河下游荒漠河岸林植被的监测数据,分析了生态输水后植物活力的恢复状况。结果显示:应急生态输水增加了塔里木河下游的生物多样性,使原本面临死亡的荒漠河岸植被重新复活,而且不同程度上促进了胡杨群落的自然更新;在近河道50m的范围内均出现了少量的胡杨、柽柳实生苗,并且在离河道150m的范围内已经有相当数量的胡杨次生苗,在离河道400m范围内大约有25%的胡杨均有不同程度的基部新枝萌蘖。通过生态输水后地下水位的逐步抬升,河道两岸的低阶地发育着一定面积的草甸植被,形成了由胡杨、柽柳和草本植物所组成的干旱区非地带性河岸稀疏植被群落,说明应急生态输水对于胡杨为建群种的荒漠河岸林植被的恢复和自然更新产生了积极的影响。

关键词：塔里木河下游生态输水胡杨植物活力监测