检索结果-南通市图书馆

General Psychiatry 2023年第6期36卷 552-556页

作者： longtao Yang Lijie zhang Wenhan Yang Fei Tang Yanyao Du Jun Liu Department of Radiology The Second Xiangya HospitalCentral South UniversityChangshaHunanChina Clinical Research Center for Medical Imaging in Hunan Province ChangshaHunanChina Department of Radiology Quality Control Center in Hunan Province ChangshaHunanChina

INTRODUCTION,Drug addiction is a chronic and recurrent encephalopathy characterised by impulsive behaviour,spiritual cravings,psychological distortion and physical damage!'According to the role of molecular biology mechanisms on the central nervous system,addictive substances can be classified as inhibitors(eg,opioids,etc),stimulants(eg,methamphetamine(MA),nicotine,cocaine,etc)and hallucinogens(eg,cannabis,etc).As published by the World Drug Report 2022,over284million individualsaged 15-64 worldwide have reportedly abused drugs in the past 12 months,emphasising the international challenge of effective detox treatment.

关键词： behaviour distortion potential

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

HEMT器件质子辐射效应仿真

太赫兹科学与电子信息学报 2022年第9期20卷 922-926,933页

作者：马毛旦曹艳荣吕航航王志恒任晨张龙涛吕玲郑雪峰马晓华西安电子科技大学机电工程学院陕西西安710071 西安电子科技大学宽禁带半导体技术国家重点实验室陕西西安710071

GaN基高电子迁移率晶体管(HEMT)器件具有抗高频、耐高温、大功率、抗辐射等特性,在核反应堆、宇宙探测等辐射环境中具有广阔的应用前景。借助SRIM软件仿真1.8 MeV质子辐射对不同AlGaN势垒层纵向尺寸下的常规耗尽型器件内部产生空位密度... 详细信息

GaN基高电子迁移率晶体管(HEMT)器件具有抗高频、耐高温、大功率、抗辐射等特性,在核反应堆、宇宙探测等辐射环境中具有广阔的应用前景。借助SRIM软件仿真1.8 MeV质子辐射对不同AlGaN势垒层纵向尺寸下的常规耗尽型器件内部产生空位密度的影响,并观察空位密度随深度的变化规律。在最优AlGaN势垒层厚度条件下,通过仿真对比5种不同栅氧层材料的MIS-HEMT器件,发现氮化铝(AlN)栅氧层材料具有相对较好的抗辐射效果。

关键词： GaN材料 HEMT器件 MIS-HEMT器件质子辐射仿真

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

氮化镓HEMT器件辐射效应综述

太赫兹科学与电子信息学报 2022年第6期20卷 535-542,564页

作者：吕航航曹艳荣马毛旦张龙涛任晨王志恒吕玲郑雪峰马晓华西安电子科技大学机电工程学院陕西西安710071 西安电子科技大学宽带隙半导体技术国家重点学科实验室陕西西安710071

在高频、大功率、高温、高压等领域,氮化镓高电子迁移率晶体管(HEMT)器件因其优异的耐辐射性能而被广泛地应用于卫星、太空探测、核反应堆等领域。尽管从理论和一些试验研究中可以得知,氮化镓材料具有良好的耐辐射特性,但在实际应用中,... 详细信息

在高频、大功率、高温、高压等领域,氮化镓高电子迁移率晶体管(HEMT)器件因其优异的耐辐射性能而被广泛地应用于卫星、太空探测、核反应堆等领域。尽管从理论和一些试验研究中可以得知,氮化镓材料具有良好的耐辐射特性,但在实际应用中,因其制作工艺及结构等因素的影响,氮化镓HEMT器件的耐辐射特性受到了很大的影响和挑战。本文介绍了氮化镓HEMT器件几种辐射效应,并对氮化镓HEMT器件辐射的研究进行了综述。

关键词：氮化镓HEMT器件 γ射线辐射质子辐射中子辐射电子辐射

Upconversion nanoparticles regulated drug&gas dual-effective nanoplatform for the targeting cooperated therapy of thrombus and anticoagulation

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Bioactive Materials 2022年第12期7卷 91-103页

作者： Shichen Liu Yao Sun Teng zhang longtao Cao Zhiwei Zhong Haoxin Cheng Qingqing Wang Zhuang Qiu Weimin Zhou Xiaolei Wang Department of Vascular Surgery The Second Affiliated Hospital of Nanchang UniversityNanchang UniversityNanchangJiangxi330006PR China The National Engineering Research Center for Bioengineering Drugs and the Technologies Institute of Translational MedicineNanchang UniversityNanchangJiangxi330088PR China College of Chemistry Nanchang UniversityNanchangJiangxi330088PR China School of Public Health&Jiangxi Provincial Key Laboratory of Preventive Medicine NanchangJiangxi330088PR China

Thromboembolism is the leading cause of cardiovascular ***,for the lack of targeting,short half-life,low bioavailability and high bleeding risk of the classical thrombolytic drugs,pharmacological thrombolysis is usually a slow process based on *** addition,frequently monitoring and regulating coagulation functions are also required during(and after)the process of *** address these issues,a targeted thrombolytic and anticoagulation nanoplatform(UCATS-UK)is developed based on upconversion nanoparticles(UCNPs)that can convert 808 or 980 nm near-infrared(NIR)light into UV/blue *** nanoplatform can target and enrich in the thrombus *** thrombolysis and anticoagulation therapy thus could be realized through the controlled release of urokinase(UK)and nitric oxide(NO).Both in vitro and in vivo experiments have confirmed the excellent thrombolytic and anticoagulative capabilities of this multifunctional *** with the unique fluorescent imaging capability of UCNPs,this work is expected to contribute to the development of clinical thrombolysis therapy towards an integrated system of imaging,diagnosis and treatment.

关键词： Targeted drug delivery Upconversion nanoparticles Controlled release Thrombus Anticoagulation

Digital intelligence and synergy of pollution reduction and carbon reduction:“Dividend”or“gap”?

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Population,Resources and Environment 2024年第4期22卷 389-398页

作者： Jiajia Li Xianfeng Han Tonglei zhang Jian Xiao longtao Chen School of Management and Economics Kunming University of Science and TechnologyKunming 650500China School of Economics Xinjiang University of Finance and EconomicsUrumqi 830012China

At the intersection of the“dual carbon”goal and the era of digital intelligence(DI),exploring the synergy between pollution and carbon reduction(SPCR)within the context of DI is important for promoting a comprehensive green transformation of economic and social *** study,based on urban panel data from 281 prefecture-level cities in China's Mainland from 2010 to 2020,developed a DI indicator system for these cities and employed a double machine learning algorithm for the first time to investigate the intrinsic mechanisms and incentivizing effects of DI on *** results showed that:①DI significantly promotes SPCR.②Mechanism tests demonstrated that DI can indirectly enhance SPCR by optimizing resource allocation and reinforcing government interventions.③Further analysis showed that the impact of DI on SPCR was more substantial in regions with lower levels of economic and environmental ***,the SPCR driven by DI exhibited heterogeneity,characterized by stronger effects in“resource-based cities>non resource-based cities”and“non-capital economic zones>capital economic zones”.The conclusions of this study hold significant implications for fully harnessing the synergy between digitization and intelligence to empower *** addition,the findings are valuable for the government’s integrated promotion of the“dual carbon”goal and the“digital China”strategy.

关键词： Digital intelligence Synergy of pollution reduction and carbon reduction Double machine learning “Dual carbon”goal

Paleogeomorphic Influence on Facies Characteristics of Braided Delta and Reservoir Prediction—An Example from L oilfield in Bohai Bay Basin

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Geoscience and Environment Protection 2019年第8期7卷 195-205页

作者： longtao Cui Xinwu Liao Liye Zhou Cheng Guo Lan zhang Tianjin Branch of CNOOC Ltd. Tianjin China

Five wells of L oilfield in Bohai bay basin have drilled 10 - 15 meters thick oil layer in the Paleogene delta. Due to the deep-buried reservoir and the poor seismic performance, it is difficult to identify the reservoir genesis, and predict reservoir distribution. By analyzing core, well logging and seismic data, a stable mudstone section is selected as the correlation marker to establish a stratigraphic framework. The paleogeomorphology is reconstructed after decompaction correction and paleobathymetric analysis. Based on the differences of paleotopography and sedimentary facies, the study area mainly develops two delta systems: low gradient coarse-grain delta system and steep gradient delta-turbidite system. The favorable reservoir of low gradient coarse-grain delta, which is thick and has good lateral connectivity, mainly locates in the delta front. The favorable reservoir of steep gradient delta-turbidite system locates in the delta front and turbidite facies, and the delta front deposits are thin and have poor lateral connectivity. The boundary of delta front is first depicted on the basis of paleotopography. In combination with reservoir architecture and forward modeling analysis, the seismic attribute is then optimized to predict the distribution of favorable reservoir. Using this method, several sets of oil-bearing sandbodies have been drilled in L oilfield, and the prediction accuracy of reservoir distribution is proved to be high. This study demonstrates that the paleogeomorphology plays an important role in controlling the genesis and distribution of the delta reservoir and provides reference for the reservoir prediction in similar oilfields.

关键词： Slope Zone Braided Delta Reservoir Prediction Forward Modeling

Paleogeomorphic Influence on Facies Characteristics and Reservoir Prediction in Lacustrine Basin—By Taking Cretaceous Reservoirs in the Western Slope of SL Basin,China as an Example

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Yangtze Oil and Gas 2019年第2期4卷 113-124页

作者： longtao Cui Qianping zhang Xue Liu Ming Yang Jianmin Zhu Tianjin Branch of CNOOC Co.Ltd. TianjinChina

The West Slope of SL Basin,China,mainly targets on lithologic reservoirs for oil and *** paleogeomorphology and provenance direction analysis has great significance for predicting the type and distribution of sand *** to the analysis of well logging,core and seismic data,braided delta and gravity sediment mainly develop in the study area.A backs tripping method is used to reconstruct the topography of Qingshankou to Yaojia Formation,*** West Slope is mainly controlled by two slope belts in Qingshankou Formation,with the width of upper slope 12-18 km and the gradient 0.7-0.8 degrees,the width of lower slope 13-15 km and the gradient 1.0 *** West Slope is controlled by a single slope belt in Yaojia Formation,with the lower slope width of 13-16 km and the gradient 0.4 *** relationship between the slope belt,provenance direction and sand body distribution is analyzed,and result shows that the combination of upper and lower slope controls the distribution of reservoir types,and the provenance supply rate controls the scale of sand *** gravity flow develops when the provenance direction is parallel to slope direction,and the slope becomes transporting channel in vertical to provenance *** paleogeomorphology,lake level and provenance direction are the main control factors of sand body in West Slope.

关键词： SL Basin Paleogeomorphology Slope Belt Sedimentary Type

基于模型参考自适应系统的模块化磁通切换永磁直线电机无位置传感器控制

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

电工技术学报 2016年第17期31卷 132-139页

作者：孔龙涛程明张邦富东南大学电气工程学院南京210096

磁路互补型模块化磁通切换永磁直线电机(简称MLFSPM电机)的永磁体和电枢绕组都置于初级短动子,而次级长定子仅由导磁铁心组成,定位力小,应用在长定子场合可大大降低成本。基于MLFSPM电机d-q轴数学模型,建立了MLFSPM电机基于模型参考自... 详细信息

磁路互补型模块化磁通切换永磁直线电机(简称MLFSPM电机)的永磁体和电枢绕组都置于初级短动子,而次级长定子仅由导磁铁心组成,定位力小,应用在长定子场合可大大降低成本。基于MLFSPM电机d-q轴数学模型,建立了MLFSPM电机基于模型参考自适应法(MRAS)的无位置传感器控制系统,分析了该无位置传感器控制系统的速度估算误差,证明了系统的可行性。同时,分别对该系统在速度突变、低速运行、负载突变以及带载工况下的动静态性能进行了仿真与实验研究,结果表明该系统速度波动小,速度估算准确,电机运行平稳,系统鲁棒性好,具有良好的动静态特性。

关键词：磁通切换永磁直线电机模型参考自适应系统无位置传感器控制

亚微米级Al_2O_(3P)/2024Al复合材料的时效行为

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

稀有金属材料与工程 2006年第12期35卷 1869-1873页

作者：姜龙涛赵敏武高辉张强哈尔滨工业大学黑龙江哈尔滨150001

选用0.3μm的Al2O3颗粒,制备了体积分数为30%的Al2O3P/2024Al复合材料。利用硬度测试,DSC测试,透射电镜等手段研究了亚微米Al2O3P/2024Al复合材料在160℃,175℃和190℃3种温度下的时效硬化行为。结果表明:亚微米Al2O3颗粒的加入使复合... 详细信息

选用0.3μm的Al2O3颗粒,制备了体积分数为30%的Al2O3P/2024Al复合材料。利用硬度测试,DSC测试,透射电镜等手段研究了亚微米Al2O3P/2024Al复合材料在160℃,175℃和190℃3种温度下的时效硬化行为。结果表明:亚微米Al2O3颗粒的加入使复合材料的硬度显著提高,但时效前后复合材料硬度提高的幅度较基体合金低得多。利用DSC和TEM对时效过程的综合分析表明,亚微米Al2O3颗粒的加入抑制了GP区的形成,提高了S’相的热扩散激活能,使S’相析出困难。表现为复合材料析出相的数量较少、尺寸较小。

关键词：铝基复合材料亚微米级Al2O3颗粒铝合金时效行为

Whole transcriptome sequencing-based construction and integrated analysis of differentially expressed LINC01426 mediated ceRNA network in non-small cell lung cancer

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

Whole transcriptome sequencing-based construction and integr...