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PM的相关文献在1981年到2023年内共计4000篇,主要集中在能源与动力工程、自动化技术、计算机技术、环境污染及其防治 等领域,其中期刊论文477篇、会议论文1篇、专利文献3522篇;相关期刊356种,包括城市建设理论研究(电子版)、医疗装备、车用发动机等; 相关会议1种,包括中国工程热物理学会燃烧学学术会议等;PM的相关文献由7887位作者贡献,包括杨林军、杜峰、不公告发明人等。

PM—发文量

期刊论文>

论文:477 占比:11.92%

会议论文>

论文:1 占比:0.02%

专利文献>

论文:3522 占比:88.05%

总计:4000篇

PM—发文趋势图

PM

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  • 杨林军
  • 杜峰
  • 不公告发明人
  • 刘含笑
  • 姚宇平
  • 孙剑峰
  • 朱超
  • 郦建国
  • 陈建民
  • 何德源
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    • 丁俊菘; 邓宇洋; 马良
    • 摘要: 文章基于2015—2018年黄河流域71个市域单元的PM_(2.5)面板数据,考察了黄河流域雾霾污染的时空特征及其影响因素。结果表明:时间维度上,黄河流域年均 PM_(2.5)浓度呈下降趋势,季度 PM_(2.5)呈现单峰谷特征,月度PM_(2.5)浓度呈“U”型分布;空间维度上,黄河流域雾霾分布存在明显空间正自相关性,中下游城市表现出高-高集聚模式,上游城市表现出低-低集聚模式;影响因素方面,经济增长与雾霾污染的关系呈“倒U”型,符合环境库兹涅茨曲线假定,另外人口密度、技术进步也是影响黄河流域雾霾污染的主要因素。
    • 肖建军
    • 摘要: 项目名称:PM;与O;在线监测量值溯源传递关键技术研发与业务化应用项目编号:HJJS-2021-1-08获奖等级:一等奖完成单位:中国环境监测总站、中国计量科学研究院完成人:肖建军、吕怡兵、张文阁、师耀龙、宋小平、周泽义、毕哲、付强、陈善荣、吴季友、刘廷良、米方卓、吴晓凤、王强、汪太明.
    • Hafizullah Rasouli
    • 摘要: This Climate Change Impacts on Water Resources and Air Pollution,research is carried out to analysis Hydro-meteorological and groundwater data in Kabul Sub-basins,Afghanistan.The main objective of this research is to find out natural causes of climate change effects on surface and to,groundwater resources and air pollutions,these data are collected from diferent Hydrometeoroiogical stations and observations in Kabul Sub-basins for different years(1957 to 2017).For completion this research they used two categories of data analysis;one is hydro meteorological analysis,and the other is groundwater level analysis.In hydro meteorological analysis air temperature,rainfall and discharge have been recovered by this research in Kabul Sub-basins,a number of air temperature,rainfall,discharge of surface water and groundwater are changes due to climate changes from 1957 to 2017.For climate changes effects this article used air pollution data of national,international development bank of Asia,WHO standards and parameters;PM_(2.5),PM_(10),TSP,NO_(2),SO_(2),O_(3),CO and Pb.From comparing PM_(10) are very higher in the air of Afghanistan.The discharge of Panjsher river due to glacier melting and climate changes increasing.The challenges during this research are lack of equipment.
    • 王梓霖; 王金兴; 常红; 孙琦岳; 滕腾
    • 摘要: 通过车内颗粒物,尤其是空气动力学直径≤1.0μm的可吸入颗粒物的测试方法及车载净化器在乘用车上的净化效果测试,研究车载净化器对车内细微颗粒物净化效果的影响。研究结果显示,车载净化器可有效缩短车内细微颗粒物的净化时间,且净化效果受净化器安装位置和净化器风道设计与空调风向匹配的影响。
    • 张姣
    • 摘要: 冬季常见的雾霾天气严重影响人们的健康;室内装修大量使用装饰材料和复合木质家具,导致室内甲醛等有害物质的散发严重超标,造成室内空气污染,对人们身体危害较大。为了解决上述问题,文中介绍一种基于ATmega16L的智能新风机控制系统的设计方案。首先进行硬件电路设计,分别对温湿度检测模块、CO;浓度检测模块、PM;浓度检测模块、触摸屏按键模块、无线收发模块RF905SE、AT24C02外部存储器模块、电机控制电路、电源模块等进行详细介绍;其次在系统软件设计方面,给出主程序流程图及子程序设计方案。通过检测空气中CO;浓度值、温湿度值和PM;浓度值,可实现对室内空气质量的高精度控制,并能够实时监测系统运行总时长,到达预定时间时提醒用户更新过滤网,确保室内空气质量良好。文中系统的设计方案和工作流程可为同类新风机控制系统的设计提供借鉴和参考。
    • 陈河堆; 闫宗帅
    • 摘要: 近年来新型存储硬件技术快速发展,出现了一种介于DRAM与磁盘之间的颠覆性存储介质,称为非易失性内存(Non-Volatile Memory,NVM),具有字节可寻址、非易失性等特征,也叫持久内存(Persistent Memory,PM)。它弥补了内存和磁盘之间的性能鸿沟,对传统DBMS软件设计提出新的挑战。本文针对数据库存储引擎的3个关键技术点,包括B+tree索引、缓存页、微事务日志,探讨在PM新型存储介质下的实现机制优化方法。实验结果表明,本文所采用的优化方法及其实现机制可充分挖掘新硬件潜力,有效提升数据库处理性能。
    • 蒋旭东; 莫志远; 王远书; 李炜; 沈继成
    • 摘要: DPF技术已经成为改善在用非道路车辆尾气排放的重要手段之一,本文介绍了电加热DPF的工作原理以及电加热DPF工作的使用条件等内容,为低排气温度柴油机械排放的柴油颗粒物PM净化提供了一种行之有效的手段和方法。
    • 谢小轶; 鲍清明; 龚世丹; 王雨青; 齐伟梅; 张红梅
    • 摘要: 目的探究大气PM_(2.5)对变应性鼻炎(allergic rhinitis,AR)大鼠核转录因子-κB(nuclear factor kappa B,NF-κB)信号通路的影响。方法将40只SPF级雄性Wistar大鼠分为对照组、AR组、AR+PM_(2.5)组和四氢化吡咯二硫代甲酸铵(pyrrolidin-edithiocarbamate ammonium,PDTC)组。采用卵清蛋白(ovalbumin,OVA)致敏法构建大鼠AR模型。AR+PM_(2.5)组和PDTC组进行PM_(2.5)吸入暴露和PDTC组同时给予腹腔注射PDTC处理,其余各组分别以等量生理盐水代替。采用AR行为学指标进行评分;PAS染色观察大鼠鼻黏膜杯状细胞增生情况;扫描电镜观察大鼠鼻黏膜超微结构;ELISA法检测大鼠鼻黏膜组织白细胞介素-4(IL-4)、白细胞介素-5(IL-5)、白细胞介素-6(IL-6)含量;q RT-PCR检测黏蛋白5AC(mucin 5AC,MUC5AC)、鼠钙激活氯通道3(mouse calcium-activated chloride channel3,mCLCA3)mRNA表达水平;Western Blot检测大鼠鼻黏膜NF-κB p65、免疫球蛋白E(IgE)蛋白的表达。结果与对照组相比,AR组和AR+PM_(2.5)组AR评分、IL-4、IL-5、IL-6含量、MUC5AC、mCLCA3 mRNA、NF-κB p65、IgE蛋白表达水平明显升高(P<0.05),黏膜杯状细胞增生及纤毛破坏更严重,且各指标AR+PM_(2.5)组高于AR组。经过PDTC干预后,PDTC组较AR+PM_(2.5)组上述指标均有所缓解(P<0.05)。结论PM_(2.5)通过激活NF-κB信号通路,增加下游炎症相关因子IL-4、IL-5、IL-6和IgE的表达,促进鼻黏膜杯状细胞增生,增加鼻黏液相关基因MUC5AC、mCLCA3的表达,从而加重鼻黏膜病理学变化和AR症状。
    • Carmen De Marco; Antonella Boselli; Andrea D’Anna; Alessia Sannino; Gaetano Sasso; Mariano Sirignano; Nicola Spinelli; Xuan Wang
    • 摘要: To obtain a real-time image of atmospheric particulate matter (PM) in highly polluted areas and to understand how the anthropogenic component linked to urban activities (industrial activities, domestic heating, road traffic, waste disposal) can locally affect near-surface measurement of PM, several measurement campaigns were achieved in the Campania region (Southern Italy) using both Lidar and in-situ instruments. A comparison between the obtained results highlights a good correlation between the data and the potential of remote sensing instruments for air quality monitoring. Data analysis was performed in terms of particle backscattering coefficient profile at 355 nm, PM mass concentration, and size distribution. Wind profiles, which covered a range of altitudes from 40 m to 290 m, were also used to study sources and physical processes involved. Measurement carried out in a rural area with a landfill site highlighted the presence of a homogeneous particulate layer throughout the sounded area due to winds driving aerosol from the landfill to the surrounding areas. The size distribution in mass concentration, highlighted a modal diameter moving towards 0.9 and 2 μm with a larger mass concentration of particles in the morning, before noon and in the afternoon when a large number of trucks delivered solid wastes. Moreover, large concentrations of particulate matter were measured in a small urban town with few industrial activities which peak (211 ± 33 μg·m-3) was measured in the direction of the most urbanized area, probably due to the lighting of the domestic heating systems. Bimodal size distribution in number concentration was measured, indicative of two types of atmospheric particles sources: gas and liquid combustion (particles with sizes below 80 nm), including vehicular traffic and domestic gas-heating, and biomass combustion (particles with sizes of the order of 200 - 500 nm). Finally, data collected in a highly populated and industrialized area highlights the presence of particles having a high level of spherical geometry (aerosol depolarization below 5%) pointing towards the industrial area. Conversely, the measurements performed pointing toward other directions highlighted a diffused source of aspherical particles (depolarization values of about 3%) spreading throughout all city territory. The work showed as the co-location of remote sensing and near surface instruments is a promising approach to studying aerosol properties in the atmospheric layers and has more accurate information on atmospheric dynamics. Moreover, the correlation between the obtained results highlighted the potential of remote sensing instruments for air quality monitoring.
    • Zhicong Yin; Huijun Wang; Hong Liao; Ke Fan; Botao Zhou
    • 摘要: 复合型大气污染对中国环境,健康和经济存在巨大的不利影响.2013年以来的减排措施有效改善了空气质量.目前,我国已进入大气污染与气候变化协同治理的关键阶段.在季节-年际尺度上,对大气污染(霾,臭氧和沙尘暴)的准确预测可以为有关部门的减排措施提供有效的科技技撑.近年来,全球科学家在理解中国气候变化,大气污染变率及相关物理机制方面取得了很大进展,为开展大气污染气候预测提供了科学基础.本文回顾了大气污染气候预测的相关进展,并对大气污染气候预测的一些发展方向提出了观点和判断.
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