检索结果-南通市图书馆

专业综合评估背景下物流类专业人才创新实践能力培养体系研究

在线全文

学校读者我要写书评

暂无评论

物流科技 2024年第5期47卷 33-34,43页

作者：刘新全周艳桃徐静雨南宁师范大学物流管理与工程学院广西南宁530100

文章基于普通高校专业评估标准,分析了目前物流类专业人才培养存在的问题,根据专业综合评估中定位与目标、师资队伍、教学资源、培养过程、学生发展、专业优势与特色六个内涵要求,构建了以创新实践能力为目标的培养体系,以提高物流类专... 详细信息

文章基于普通高校专业评估标准,分析了目前物流类专业人才培养存在的问题,根据专业综合评估中定位与目标、师资队伍、教学资源、培养过程、学生发展、专业优势与特色六个内涵要求,构建了以创新实践能力为目标的培养体系,以提高物流类专业人才的创新实践能力。

关键词：物流类专业创新实践能力培养体系专业综合评估

2023年全国主要林业有害生物发生情况及2024年趋势预测

在线全文

学校读者我要写书评

暂无评论

中国森林病虫 2024年第1期43卷 41-45页

作者：刘冰闫佳钰王朵王越周艳涛陈怡帆国家林业和草原局生物灾害防控中心林草有害生物监测预警国家林业和草原局重点实验室辽宁沈阳110034

总结分析2023年全国主要林业有害生物发生情况,研判2024年发生趋势。2023年全国主要林业有害生物持续高发态势趋缓,但仍属偏重发生、局部成灾,全年发生面积1092.30万hm^(2),同比下降7.98%;松材线虫Bursaphelenchus xylophilus等重大外... 详细信息

总结分析2023年全国主要林业有害生物发生情况,研判2024年发生趋势。2023年全国主要林业有害生物持续高发态势趋缓,但仍属偏重发生、局部成灾,全年发生面积1092.30万hm^(2),同比下降7.98%;松材线虫Bursaphelenchus xylophilus等重大外来有害生物扩散势头减缓,但危害程度依然严重;林业鼠(兔)害、钻蛀类害虫、松树病害等在“三北”、华南、西南等多地危害严重;食叶害虫、经济林病虫等其他本土常发性林业有害生物整体平稳发生、局部偏重。预测2024年全国主要林业有害生物整体仍偏重发生、局地成灾,全年发生面积1150万hm^(2);松材线虫病疫情扩散势头进一步减缓,但仍呈点状散发态势,控增量、消存量压力大;美国白蛾Hyphantria cunea疫情扩散势头减缓,整体轻度发生,黄淮下游流域局部地区可能偏重危害;林业鼠(兔)害、杨树蛀干害虫和松树病害在“三北”防护林和天然林部分区域有偏重成灾风险;松树钻蛀类害虫在东北、华南、西南常发区多地将延续危害偏重态势;其他本土常发性林业有害生物在全国大部分发生区整体将轻度发生,局部地区可能偏重发生。针对当前形势,提出全国林业有害生物防控对策建议。

关键词：林业有害生物发生情况趋势预测对策建议

Evaluation of trap effi ciency for the Asian longhorned beetle,Anoplophora glabripennis

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

Journal of Forestry Research 2023年第4期34卷 1133-1144页

作者： Junxin Yan yantao zhou Dun Jiang Yaru Lü Yingsheng Liu Mengmeng Yu Aijun Zhang Shanchun Yan College of Landscape Architecture Northeast Forestry UniversityHarbin 150040Heilongjiang ProvincePeople’s Republic of China Engineering Consulting and Design Institute Company Limited Northeast Forestry UniversityHarbin 150040Heilongjiang ProvincePeople’s Republic of China College of Forestry Northeast Forestry UniversityHarbin 150040Heilongjiang ProvincePeople’s Republic of China Key Laboratory of National Forestry and Grassland Administration on Forest and Grassland Pest Monitoring and Warning Center for Biological Disaster Prevention and ControlNational Forestry and Grassland AdministrationShenyang 110034Liaoning ProvincePeople’s Republic of China Forestry Bureau of Hengshui City Hengshui 053000Hebei ProvincePeople’s Republic of China College of Food Science and Nutritional Engineering China Agriculture UniversityBeijing 100083People’s Republic of China Invasive Insect Biocontrol and Behavior Laboratory BARC-WestUSDA-ARSBeltsvilleMD 20705USA

The Asian longhorned beetle(ALB),Anoplophora glabripennis,is a well-known stem borer with high polyphagous properties causing frequent outbreaks in northeast *** attractant-based trap is needed to improve the sensitivity,reliability,and effi ciency for detection of the *** this study,the eff ects of attractants,trap types and color synergy of a trapping system were *** blends comprised of the male-produced,two-component pheromone plus plant volatiles were used in the fi eld in Hengshui *** volatiles(e.g.,1-pentanol,and 2-pentanol)in combination with male pheromones increased the mean number of trapped ALB compared to the pheromone *** responded better than females to traps baited with plant volatiles alone,whereas traps emitting plant volatiles plus pheromone,regardless of trap type,captured more females than *** ALB-trapping effi ciency of a modifi ed fl ight intercept panel trap was more than ten times as high as a woodborer panel trap and 1.2 times a fl ight intercept panel *** 1-pentanol and 2-pentanol attractants alone or in combination with male-produced pheromone were more eff ective for monitoring ALB than common *** laboratory Y-tube olfactometer experiments,the color brown was better at increasing attraction of both males and females to 1-pentanol,2-pentanol,1-pentanol+pheromone,and 2-pentanol+pheromone compared to the clear-glass control *** fi ndings provide a reliable and eff ective trap system to monitor ALB infestations.

关键词： Asian longhorned beetle Trap design Visual cue Male-produced pheromone Plant volatiles Integrated pest management

Establishment of human cerebral organoid systems to model early neural development and assess the central neurotoxicity of environmental toxins

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第1期20卷 242-252页

作者： Daiyu Hu Yuanqing Cao Chenglin Cai Guangming Wang Min zhou Luying Peng yantao Fan Qiong Lai Zhengliang Gao Fundamental Research Center Shanghai Yangzhi Rehabilitation Hospital(Shanghai Sunshine Rehabilitation Center)School of MedicineTongji UniversityShanghaiChina Institute of Geriatrics(Shanghai University) Affiliated Nantong Hospital of Shanghai University(The Sixth People’s Hospital of Nantong)Shanghai University School of MedicineNantongJiangsu ProvinceChina Shanghai Engineering Research Center of Organ Repair Shanghai University School of MedicineShanghaiChina Key Laboratory of Arrhythmias Ministry of EducationShanghai East HospitalSchool of MedicineTongji UniversityShanghaiChina

Human brain development is a complex process,and animal models often have significant *** address this,researchers have developed pluripotent stem cell-derived three-dimensional structures,known as brain-like organoids,to more accurately model early human brain development and *** enable more consistent and intuitive reproduction of early brain development,in this study,we incorporated forebrain organoid culture technology into the traditional unguided method of brain organoid *** involved embedding organoids in matrigel for only 7 days during the rapid expansion phase of the neural epithelium and then removing them from the matrigel for further cultivation,resulting in a new type of human brain organoid *** cerebral organoid system replicated the temporospatial characteristics of early human brain development,including neuroepithelium derivation,neural progenitor cell production and maintenance,neuron differentiation and migration,and cortical layer patterning and formation,providing more consistent and reproducible organoids for developmental modeling and toxicology *** a proof of concept,we applied the heavy metal cadmium to this newly improved organoid system to test whether it could be used to evaluate the neurotoxicity of environmental *** organoids exposed to cadmium for 7 or 14 days manifested severe damage and abnormalities in their neurodevelopmental patterns,including bursts of cortical cell death and premature *** exposure caused progressive depletion of neural progenitor cells and loss of organoid integrity,accompanied by compensatory cell proliferation at ectopic *** convenience,flexibility,and controllability of this newly developed organoid platform make it a powerful and affordable alternative to animal models for use in neurodevelopmental,neurological,and neurotoxicological studies.

关键词： cadmium cell death cell proliferation cortical development environmental toxins neural progenitor cells neurogenesis neurotoxicology organoids stem cells

在线全文

学校读者我要写书评

暂无评论

超临界水稠油改质反应动力学研究

工程热物理学报 2023年第7期44卷 1841-1847页

作者：董宇赵秋阳周衍涛刘明汪庐山郭烈锦西安交通大学动力工程多相流国家重点实验室西安710049 中国石化胜利油田分公司石油工程技术研究院东营257000 佛山市南海区鑫锦伟华洁净能源研究院佛山528216

超临界水稠油改质具有速度快,抑制结焦等优势,本文考察了反应温度380~440℃和反应时长0~500min对超临界水稠油改质反应的影响,实验结果表明超临界水稠油改质反应呈现三个阶段:诱导期、裂解期、生气期,诱导期内胶质的裂解十分显著,并且... 详细信息

超临界水稠油改质具有速度快,抑制结焦等优势,本文考察了反应温度380~440℃和反应时长0~500min对超临界水稠油改质反应的影响,实验结果表明超临界水稠油改质反应呈现三个阶段:诱导期、裂解期、生气期,诱导期内胶质的裂解十分显著,并且无结焦产生,裂解期内重质组分裂解加深,产生大量轻质组分,生气期内饱和烃二次裂解持续产生气体。同时超临界水稠油改质反应的进程随温度提高而加快。基于相分离的方法建立了6集总反应动力学模型,沥青质溶解度系数随着温度升高而下降,高温下软沥青对沥青质的分散作用减弱。反应动力学的方法有助于解释超临界水稠油改质的反应路径和反应机理。

关键词：超临界水稠油改质反应动力学

A GRID-BASED CLUSTERING ALGORITHM WITH REFERENTIAL VALUE OF PARAMETERS

在线全文

学校读者我要写书评

暂无评论

A GRID-BASED CLUSTERING ALGORITHM WITH REFERENTIAL VALUE OF ...

2007中国宁波国际计算机科学与技术学术大会

作者： zhou yantao Yi Xingdong Wu Zhengguo School of Computer & Communication Hunan University Information & Electrical Engineering College Naval Engineering University

By means of calculating density threshold data,some effective referential values of parameters were worked out and provided for users,and a new kind of clustering algorithm called GRPC was *** the help of these referential values of parameters,we can not only cluster general data but also segregate high-density clusters from low-density *** problem of lower quality of clusters in traditional grid clustering algorithm which usually ignored the distribution of data when meshing was *** results indicated that this new algorithm can differentiate between outliers or noises and clusters effectively and treat clusters of arbitrary *** new algorithm also displayed a good clustering quality.

关键词： Grid Density threshold Clustering algorithm Data mining

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

《肩水金关汉简(贰)》释文补正四则

敦煌研究 2015年第2期 119-124页

作者：周艳涛西南大学汉语言文献研究所重庆400715

《肩水金关汉简(贰)》的出版使得对汉代西北地区政治、军事系统及社会生活等的研究多了一份新的材料,但其中的释文仍有值得商榷之处。这里结合简牍材料本身的行文习惯,通过汉简材料的内部对比及与碑刻等其他材料的对比,从文字在简文版... 详细信息

《肩水金关汉简(贰)》的出版使得对汉代西北地区政治、军事系统及社会生活等的研究多了一份新的材料,但其中的释文仍有值得商榷之处。这里结合简牍材料本身的行文习惯,通过汉简材料的内部对比及与碑刻等其他材料的对比,从文字在简文版式中的位置、其本身构件的布局、笔画的走势等方面,对原释文的一处误释字予以了纠正,三处未释字进行了补释。

关键词：肩水金关汉简释文补释

利用套算法和强饲法评定籽粒苋茎叶粉肉鸡表观代谢能

在线全文

学校读者我要写书评

暂无评论

动物营养学报 2024年第3期36卷 2022-2030页

作者：李延涛周世龙王琰张晨任莹武汉轻工大学动物营养与饲料科学湖北省重点实验室武汉430023

本试验旨在利用套算法和强饲法评定籽粒苋茎叶粉肉鸡表观代谢能(AME)。套算法试验选用1日龄健康的罗斯308白羽肉鸡144只,随机分为3组,每组6个重复,每个重复8只鸡。代谢试验分为2个阶段:19~21日龄和40~42日龄。代谢试验期间,对照组100%... 详细信息

本试验旨在利用套算法和强饲法评定籽粒苋茎叶粉肉鸡表观代谢能(AME)。套算法试验选用1日龄健康的罗斯308白羽肉鸡144只,随机分为3组,每组6个重复,每个重复8只鸡。代谢试验分为2个阶段:19~21日龄和40~42日龄。代谢试验期间,对照组100%饲喂基础饲粮,30%替代组饲喂70%基础饲粮+30%籽粒苋茎叶粉,50%替代组饲喂50%基础饲粮+50%籽粒苋茎叶粉。分别用全收粪法和指示剂法测定籽粒苋茎叶粉AME。强饲法试验选用42日龄健康的罗斯308白羽肉鸡10只,随机分为5个重复,每个重复2只鸡。试验鸡强饲籽粒苋茎叶粉,按照48 h排空-强饲-48 h收集排泄物的程序进行。结果表明:1)对比不同方法测定的籽粒苋茎叶粉AME发现,强饲法测定的籽粒苋茎叶粉AME显著低于套算法(P0.05)。2)套算法中30%替代比例与50%替代比例测定的籽粒苋茎叶粉AME无显著差异(P>0.05),但30%替代比例测定的籽粒苋茎叶粉AME高于50%替代比例。由此可知,本试验条件下,建议使用套算法中的指示剂法测定籽粒苋茎叶粉肉鸡AME,适宜替代比例为30%,在此条件下测得19~21日龄肉鸡籽粒苋茎叶粉AME为3.65 MJ/kg,40~42日龄肉鸡籽粒苋茎叶粉AME为3.77 MJ/kg。

关键词：籽粒苋茎叶粉表观代谢能套算法强饲法肉鸡

同方期刊数据库

在线全文

学校读者我要写书评

暂无评论

一种最大团问题的Tile自组装高效模型

计算机研究与发展 2014年第6期51卷 1253-1262页

作者：周旭周炎涛欧阳艾嘉李肯立湖南大学信息科学与工程学院长沙410082 嘉兴学院数理与信息工程学院浙江嘉兴314001 湖南大学电气与信息工程学院长沙410082

Tile自组装模型凭借其纳米属性、自组装、可编程等特点,引起了科学界的广泛关注.然而随着Tile自组装模型的深入研究,可扩展性问题已成为其进一步发展的巨大障碍.为此,首先提出了一种最大团问题Tile自组装高效模型.该模型主要由TileDual... 详细信息

Tile自组装模型凭借其纳米属性、自组装、可编程等特点,引起了科学界的广泛关注.然而随着Tile自组装模型的深入研究,可扩展性问题已成为其进一步发展的巨大障碍.为此,首先提出了一种最大团问题Tile自组装高效模型.该模型主要由TileDual子系统、初始配置子系统及检测子系统三大部分构成.其中TileDual子系统的设计中引入了启发式算法的设计思想,提出了TileDual分子对的概念.通过与已有基于穷举策略的研究成果对比发现:模型不仅具有Tile自组装模型的优点,而且将求解图G0最大团问题所需的解空间规模由2n0减少至1.712n^2n,求解成功率由0.5n0增加至0.5n^0.57n,其中n0为图G0中的顶点数,n为预处理后得到的图G的顶点数,且n0≤n.因此,所提出的模型在减少解空间规模的同时还可以提高生物并行计算解的精确性.

关键词： DNA计算 Tile自组装模型最大团问题 NP完全问题并行计算