检索结果-南通市图书馆

MicroRNAs and long non-coding RNAs in liver surgery:Diagnostic and therapeutic merits

Hepatobiliary & Pancreatic Diseases International 2020年第3期19卷 218-228页

作者： Zhi-Qiu Hu Yi Lu Di Cui chen-Yang Ma Su Shao Ping chen Ran Tao jian-Jun Wang Department of Surgery Minhang HospitalFudan UniversityShanghai 201199China Department of Hepatobiliary-Pancreatic&Minimally Invasive Surgery Affiliated Zhejiang Provincial People’s HospitalHangzhou Medical SchoolHangzhou 310014China center for Clinical Medical research Affiliated Zhejiang Provincial People’s HospitalHangzhou Medical SchoolHangzhou 310014China Department of General Surgery Chun’an 1st People’s HospitalHangzhou 311700China Department of Obstetrics and Gynecology Shaoxing 2nd HospitalShaoxing 312000China

Background:Hepatectomy and liver transplantation(LT)are the two most commonly performed surgical procedures for various hepatic *** RNA(mi RNA)and long non-coding RNA(lnc RNA)have been gradually unveiled their roles as either biomarkers for early diagnosis or potentially therapeutic tools to manipulate gene expression in many disease *** review aimed to discuss the effects of mi RNA or lnc RNA in the hepatectomy and LT *** sources:We did a literature search from 1990 through January 2018 to summarize the currently available evidence with respect to the effects of mi RNA and lnc RNA in liver regeneration after partial hepatectomy,as well as their involvement in several key issues related to LT,including ischemia-reperfusion injury,allograft rejection,tolerance,recurrence of original hepatic malignancies,***:Certain mi RNAs and lnc RNAs are actively involved in the regulation of various aspects of liver resection and *** the process of liver regeneration after hepatectomy,the expression of mi RNAs and lnc RNAs shows dynamic ***:It is now clear that mi RNAs and lnc RNAs orchestrate in various aspects of the pathophysiological process of LT and *** understanding of the underlying mechanism and future clinical trials may strengthen their positions as either biomarkers or potential therapeutic targets in the management of complications after liver surgery.

关键词： Hepatectomy Liver transplantation microRNA Long non-coding RNA Ischemia-reperfusion injury Rejection

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Combined effects of physical activity and calcium on bone health in children and adolescents:a systematic review of randomized controlled trials

引用

World Journal of Pediatrics 2020年第4期16卷 356-365页

作者： Xi Yang Yi Zhai jian Zhang Jing-Yi chen Dan Liu Wen-Hua Zhao National Institution for Nutrition and Health Chinese Center for Disease Control and Prevention27 Nanwei RoadWest DistrictBeijingChina Department of Science and Technology management Chinese Center for Disease Control and Prevention155 Changbai RoadChangping DistrictBeijingChina China National Clinical research center for Neurological Diseases Capital Medical UniversityNo.119 South Fourth Ring West RoadFengtai DistrictBeijingChina

Background A better understanding of the role of exercise and nutrition in bone health is significant for preventing *** aim of this review was to assess the combined effects of physical activity and calcium intake on improving bone mineral density in children and *** A search of electronic databases(MedLine,ISI Web of Science,Science Direct)and the literature references were *** controlled trials published between 1997 and 2017,evaluating the effect of both physical activity and calcium intake intervention on bone mineral density or bone mineral content among children aged 3–18 years were *** Improved Jadad Rating Scale was used to assess the methodological quality of the included *** characteristics were summarized in accordance with the review’s PICO *** in bone mineral content were detected at several different bone *** A total of nine studies involving 908 participants were included in this *** combined intervention of physical activity and calcium increased bone mineral in children and adolescents,especially when baseline calcium intake level was low and among participants on the stage of early *** Regular physical activity combined with high level of calcium intake is beneficial for bone health in young *** research is needed to evaluate the dose–response associations and long-term effects of the interaction between physical activity and calcium intake.

关键词： Adolescents Bone health Calcium Children Physical activity

来源：

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

BP neural networks and random forest models to detect damage by Dendrolimus punctatus Walker

引用

Journal of Forestry research 2020年第1期31卷 107-121页

作者： Zhanghua Xu Xuying Huang Lu Lin Qianfeng Wang jian Liu Kunyong Yu Chongcheng chen College of Environment and Resources Fuzhou UniversityFuzhou 350116People’s Republic of China Fujian Provincial Key Laboratory of Resources and Environment Monitoring and Sustainable management and Utilization Sanming 365004People’s Republic of China Key Lab of Spatial Data Mining and Information Sharing Ministry of EducationFuzhou 350116People’s Republic of China

The construction of a pest detection algorithm is an important step to couple"ground-space"characteristics,which is also the basis for rapid and accurate monitoring and detection of pest *** four experimental areas in Sanming City,jiangle County,Sha County and Yanping District in Fujian Province,sample data on pest damage in 182 sets of Dendrolimus punctatus were *** data were randomly divided into a training set and testing set,and five duplicate tests and one eliminating-indicator test were *** on the characterization analysis of the host for *** damage,seven characteristic indicators of ground and remote sensing including leaf area index,standard error of leaf area index(SEL)of pine forest,normalized difference vegetation index(NDVI),wetness from tasseled cap transformation(WET),green band(B2),red band(B3),near-infrared band(B4)of remote sensing image are obtained to construct BP neural networks and random forest models of pest *** detection results of these two algorithms were comprehensively compared from the aspects of detection precision,kappa coefficient,receiver operating characteristic curve,and a paired t *** results showed that the seven indicators all were responsive to pest damage,and NDVI was relatively weak;the average pest damage detection precision of six tests by BP neural networks was 77.29%,the kappa coefficient was 0.6869 and after the RF algorithm,the respective values were 79.30%and 0.7151,showing that the latter is more optimized,but there was no significant difference(p>0.05);the detection precision,kappa coefficient and AUC of the RF algorithm was higher than the BP neural networks for three pest levels(no damage,moderate damage and severe damage).The detection precision and AUC of BP neural networks were a little higher for mild damage,but the difference was not significant(p>0.05)except for the kappa coefficient for the no damage level(p<0.05).An"over-fitting"phenomenon tends to occur in BP neur

关键词： BP neural networks Detection precision Kappa coefficient Pine moth Random forest ROC curve

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Implementation of the parallel mean shift-based imagesegmentation algorithm on a GPU cluster

引用

International Journal of Digital Earth 2019年第3期12卷 328-353页

作者： Fang Huang Yinjie chen Li Li Ji Zhou jian Tao Xicheng Tan Guangsong Fana School of Resources&Environment University of Electronic Science and Technology of ChinaChengduPeople’s Republic of China Institute of Remote Sensing Big Data Big Data Research CenterUniversity of Electronic Science and Technology of ChinaChengduPeople’s Republic of China School of Construction&management Engineering Xihua UniversityChengduPeople’s Republic of China Texas A&M Engineering Experiment Station and High Performance research Computing Texas A&M UniversityCollege StationTXUSA International School of Software Wuhan UniversityWuhanPeople’s Republic of China

The mean shift image segmentation algorithm is very computationintensive. To address the need to deal with a large number of remotesensing (RS) image segmentations in real-world applications, this studyhas investigated the parallelization of the mean shift algorithm on asingle graphics processing unit (GPU) and a task-scheduling methodwith message passing interface (MPI)+OpenCL programming model on aGPU cluster platform. This paper presents the test results of the parallelmean shift image segmentation algorithm on Shelob, a GPU clusterplatform at Louisiana State University, with different datasets andparameters. The experimental results show that the proposed parallelalgorithm can achieve good speedups with different configurations andRS data and can provide an effective solution for RS image processingon a GPU cluster.

关键词： Mean shift algorithm GPU cluster task scheduling MPI OpenCL

来源：

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

区域科技金融发展水平测度与空间分布特征分析——来自河北省的数据

引用

科技创业月刊 2024年第1期37卷 128-133页

作者：王健陈海霞刘子园王魏丁波河北金融学院金融创新与风险管理研究中心河北金融学院大数据科学学院河北金融学院研究生部河北保定071051

为加快推进区域科技金融发展,促进经济转型与动能转化,从科技金融环境、科技金融投入和科技金融产出3个方面出发,提出了一套用于评估区域科技金融发展水平的指标体系。以河北省为例,采用熵权TOPSIS法对2012-2020年河北省11个地区的科技... 详细信息

为加快推进区域科技金融发展,促进经济转型与动能转化,从科技金融环境、科技金融投入和科技金融产出3个方面出发,提出了一套用于评估区域科技金融发展水平的指标体系。以河北省为例,采用熵权TOPSIS法对2012-2020年河北省11个地区的科技金融发展水平进行测度,通过莫兰指数和自然断点法对各地区科技金融发展水平的空间相关性和空间分布格局进行探索分析。结果显示:2012-2020年河北省各地区科技金融发展水平整体呈上升态势,但地区间差异仍然很大;冀中地区领先于其他地区,冀南、冀北地区增速高于中部地区,形成“中部地区领跑、周边地区追赶”的格局;河北省科技金融分布并不均衡,整体呈现出“中部高、南北低、逐渐向东部深化”的空间分布格局。建议河北省加大财政科技投入,合理配置科技金融资源;建立区域合作机制,发挥核心地区溢出作用;完善科技金融人才体系,加快推进科技成果转化。

关键词：科技金融莫兰指数自然断点法空间特征

来源：

维普期刊数据库博看期刊

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

高光谱遥感在草原植物多样性监测中的应用与展望

引用

应用生态学报 2024年第5期35卷 1397-1407页

作者：顾晨梁建刘旭颖孙泊远孙同生俞坚钢孙晨曦万华伟高吉喜南通智能感知研究院江苏南通226010 生态环境部卫星环境应用中心北京100094

草原的生物多样性具有多种生态功能,而草原生物多样性的保护与管理工作需要收集草原的植物多样性信息。高光谱遥感以其独特的大范围覆盖和高光谱分辨率优势,为草原植物多样性的长期监测提供了新的解决方案。本文首先回顾了高光谱遥感技... 详细信息

草原的生物多样性具有多种生态功能,而草原生物多样性的保护与管理工作需要收集草原的植物多样性信息。高光谱遥感以其独特的大范围覆盖和高光谱分辨率优势,为草原植物多样性的长期监测提供了新的解决方案。本文首先回顾了高光谱遥感技术的发展历程,强调了高光谱数据在草原植物多样性监测中的独特优势,并进一步分析了其在草原植物多样性监测中的具体应用。最后,讨论了高光谱遥感技术在当前应用中面临的挑战,如数据处理复杂性、算法精度,以及与地面遥感数据的整合问题,并对未来研究方向提出展望。随着遥感技术的不断进步和多源数据的综合应用,高光谱遥感将在草原生态监测与生物多样性保护方面发挥更加重要的作用,为全球生态保护和可持续发展提供科学依据和技术支持。

关键词：高光谱遥感植物多样性光谱多样性生态系统管理

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

基于Google Earth Engine的洱海流域建成区范围及生态质量变化分析

引用

湖北农业科学 2024年第2期63卷 199-204页

作者：郑舒元陈星宇海燕王建雄云南农业大学昆明650201 云南省高校农业遥感与精准农业工程研究中心昆明650201 西南林业大学经济管理学院昆明650224

以洱海流域为研究区,借助Google Earth Engine云平台,利用Landsat 8 OLI系列影像,合成研究区域的增强的指数型建筑指数(EIBI)并对洱海流域建成区进行提取,再对研究区域遥感生态指数进行合成,通过对建成区范围与流域范围内遥感生态指数... 详细信息

以洱海流域为研究区,借助Google Earth Engine云平台,利用Landsat 8 OLI系列影像,合成研究区域的增强的指数型建筑指数(EIBI)并对洱海流域建成区进行提取,再对研究区域遥感生态指数进行合成,通过对建成区范围与流域范围内遥感生态指数进行空间相关分析,从而对2014—2021年洱海流域及其建成区进行生态评估。结果表明,EIBI可有效增强建筑信息,使用EIBI可有效、准确地提取研究区域建成区,经过EIBI提取,洱海流域2014—2021年建成区扩张面积共14.712 km2;2014—2021年洱海流域生态明显改善,遥感生态指数增加0.008,其上升速率为0.001/年,流域内超过65%的区域生态得到改善;洱海流域建成区与生态未得到改善区域大致匹配,建成区经过生态修复后生态质量未见显著提升,且建成区生态质量呈逐年下降趋势,说明建成区对环境改善具有阻力。

关键词：洱海流域增强的指数型建筑指数遥感生态指数 Google Earth Engine 流域环境

来源：

维普期刊数据库博看期刊

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Wearable wireless real-time cerebral oximeter for measuring regional cerebral oxygen saturation

引用

Science China(Information Sciences) 2021年第1期64卷 123-132页

作者： Juanning SI Xin ZHANG Meng LI jian YU Zhiyong ZHANG Qing HE Shaohua chen Lianqing ZHU Tianzi jianG School of Instrumentation Science and Opto-electronics Engineering Beijing Information Science and Technology University Beijing Key Laboratory for Optoelectronic Measurement Technology Beijing Information Science and Technology University Brainnetome center Institute of AutomationChinese Academy of Sciences National Laboratory of Pattern Recognition Institute of AutomationChinese Academy of Sciences research and Development Department Casibrain Technology Limited Company Key Laboratory for NeuroInformation of the Ministry of Education School of Life Science and TechnologyUniversity of Electronic Science and Technology of China Chinese Academy of Sciences center for Excellence in Brain Science Institute of AutomationChinese Academy of Sciences Queensland Brain Institute University of Queensland

Monitoring regional cerebral oxygen saturation throughout the perioperative clinical process is important for successful patient outcomes. Cerebral oximeters based on near-infrared spectroscopy(NIRS)have already been used for monitoring brain oxygenation and hemodynamics to avoid intraoperative ischemic stroke and reduce postoperative cognitive dysfunction. The current devices are all designed to be used as a bedside monitor, limiting their use to situations that center around a hospital bed. There is a current lack of wearable, miniaturized, wireless equipment that can extend brain oxygenation monitoring to motion tasks or tight spaces. We design a head-mounted wearable wireless oxygen saturation monitoring on head(WORTH)band based on NIRS for monitoring regional cerebral oxygen saturation. The band is embedded with a highly integrated central block, which comprises an optical module, a microprocessor unit, a wireless communication module, and a power management module. The performance of the WORTH band is evaluated by a controlled hypoxia experiment and a squat-to-stand experiment. The results confirm that the WORTH band can record cerebral oxygen saturation with an accuracy comparable to that of a clinical monitor and demonstrate that it is also effective during motion tasks.

关键词： near-infrared spectroscopy cerebral oxygen saturation oximeter rSO2 wearable

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

鲁西泰安地区~2.7Ga变玄武岩成因及其对新太古代花岗-绿岩带构造演化的制约

引用

岩石学报 2024年第11期40卷 3336-3362页

作者：张家辉相振群施建荣初航张健陈春晖丁海洋李怀坤中国地质调查局天津地质调查中心(华北地质科技创新中心) 天津300170 中国地质调查局前寒武纪地质研究中心天津300170 山东钰镪地质资源勘查开发有限责任公司泰安271000 泰山风景名胜区管理委员会泰安271000

鲁西地区保存有华北克拉通最典型的新太古代花岗-绿岩带,且后期地质作用改造较弱,是探讨早期地壳形成演化的关键地区。最近的地质调查工作,在泰安地区识别出一套变玄武岩组合。通过锆石U-Pb定年,获得侵入变玄武岩的奥长花岗岩脉年龄为2... 详细信息

鲁西地区保存有华北克拉通最典型的新太古代花岗-绿岩带,且后期地质作用改造较弱,是探讨早期地壳形成演化的关键地区。最近的地质调查工作,在泰安地区识别出一套变玄武岩组合。通过锆石U-Pb定年,获得侵入变玄武岩的奥长花岗岩脉年龄为2717±10Ma、二长花岗岩脉年龄为2549±15Ma,并在变玄武岩中获得~2729Ma、~2596Ma和2553~2549Ma多期年龄信息,由此确定变质玄武岩形成年龄大于~2.72Ga,遭受新太古代晚期~2.60Ga和~2.55Ga构造热事件影响。泰安地区变玄武岩组合归属于新太古代早期的泰山岩群雁翎关岩组。这些玄武岩遭受了后期(~2.55Ga)花岗质岩浆侵位作用的影响,并在原岩岩浆演化过程中经历了橄榄石和单斜辉石的结晶分离。变玄武岩为拉斑质玄武岩,显示出原始地幔一致的微量元素组成(Nb/Y=0.08~1.14、Nb/Th=1.82~13.4、Zr/Nb=17.9~27.2),表现为近平坦或弱分异的稀土元素配分模式[(La/Yb)N=0.90~2.52]和平坦的重稀土配分模式[(Gd/Yb)N=1.04~1.23];具有低的Sm/Yb比值(0.95~1.25)和正的εNd(t)值(2.48~3.64)。区域上,雁翎关岩组变玄武岩主要伴生科马提岩,成分均一,无伴生陆源沉积物,微量元素组成上与洋底高原玄武岩特征类似,来源于地幔柱头部尖晶石橄榄岩的部分熔融。新太古代早期(~2.7Ga),鲁西地区出现由科马提岩和拉斑玄武岩组成的绿岩带,同期出现新生的TTG陆壳,形成于地幔柱构造体制;新太古代晚期(~2.5Ga)出现钙碱性火山岩、TTG、赞岐岩和富钾花岗岩组合,显示出强烈的壳-幔相互作用和地壳物质再循环,板块构造体制已开始作用。综合地质资料揭示,华北克拉通构造体制在新太古代发生重大转变:由早期地幔柱逐渐转变为晚期的板块构造体制。

关键词：花岗-绿岩带新太古代地球化学泰山岩群鲁西

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

基于迁移学习的陆空通话语义校验方法研究

引用

舰船电子工程 2024年第2期44卷 127-132页

作者：陈宽明蒋培元潘卫军张坚杨仕恺中国民用航空飞行学院空中交通管理学院广汉618307 四川航空股份有限公司运行风险控制中心成都610000

陆空通话语义校验对于飞行安全意义重大,为解决判断飞行员复诵指令是否与管制员下达指令一致的问题,构建了一种陆空通话语义校验模型——Ernie-Gram-BiGRU-Attention。首先利用Ernie-Gram模块对文本对信息进行编码;使用BiGRU模块对编码... 详细信息

陆空通话语义校验对于飞行安全意义重大,为解决判断飞行员复诵指令是否与管制员下达指令一致的问题,构建了一种陆空通话语义校验模型——Ernie-Gram-BiGRU-Attention。首先利用Ernie-Gram模块对文本对信息进行编码;使用BiGRU模块对编码后的文本对信息进行进一步的特征抽取得到压缩后句向量;由于陆空通话中关键词信息至关重要,采用注意力机制来实现对关键词特征的信息抽取,采用全连接层将注意力向量与句向量进行特征融合。最后,将融合后的向量与Ernie-Gram模块输出的分类词向量拼接,送入全连接层实现文本对的语义校验。构建的模型在陆空通话文本对数据集上取得了97.1%的准确率,相较于Ernie-Gram基准模型准确率提升了2%,相较于其他基于Bert改进的模型,在精确率、召回率、F1值以及准确率方面均有提高。

关键词：空中交通安全迁移学习陆空通话 Ernie-Gram 注意力机制

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：