检索结果-内蒙古大学图书馆

What have we known so far for fluorescence staining and quantification of microplastics:A tutorial review

Frontiers of Environmental science & engineering 2022年第1期16卷 37-50页

作者： Shengdong Liu Enxiang Shang Jingnan Liu Yining Wang Nanthi Bolan MBKirkham Yang Li Key Laboratory of Water and Sediment Sciences of Ministry of Education State Key Laboratory of Water Environment SimulationSchool of EnvironmentBeijing Normal UniversityBeijing 100875China College of Science and Technology Hebei Agricultural UniversityHuanghua 061100China School of Agriculture and Environment The University of Western AustraliaPerthWA 6001Australia The UWA Institute of Agriculture The University of Western AustraliaPerthWA 6001Australia Global Innovative Centre for Advanced Nanomaterials College of EngineeringScience and EnvironmentUniversity of NewcastleCallaghanNSW 2308Australia Department of Agronomy Throckmorton Plant Sciences CenterKansas State UniversityManhattanKS 66506USA

Understanding the fate and toxicity of microplastics(MPs,<5 mm plastic particles)is limited by quantification *** paper summarizes the methods in use and presents new ***,sampling and pretreatment processes ofMPs,including sample collection,digestion,density separation,and quality control are *** the promising and convenient staining procedures and quantification methods for MPs using fluorescence dyes are *** factors that influence the staining of MPs,including their physicochemical properties,are summarized to provide an optimal operation *** general,the digestion step is crucial to eliminate natural organic matter(NOM)to avoid interference in *** was reported to be the most appropriate solvent,and 10–20μg/mL are recommended as optimal dye *** addition,a heating and cooling procedure is recommended to maintain the fluorescence intensity of MPs for two *** staining,a fluorescence microscope is usually used to characterize the morphology,mass,or number of MPs,but compositional analysis cannot be determined with *** fluorescence staining methods have been implemented to study MP abundance,transport,and toxicity and have been combined with other chemical characterization techniques,such as Fourier transform infrared spectroscopy and Raman *** studies are needed to focus on the synthesis of novel dyes to avoid NOM’s *** need to be combined with other spectroscopic techniques to characterize plastic composition and to develop image-analysis *** stability of stained MPs needs to be improved.

关键词： Plastic particles Fluorescence dyes Identification Concentration quantification

来源：评论

学校读者我要写书评

暂无评论

Cooperative jamming resource allocation based on integer-encoded directed mutation artificial bee colony algorithm 4

Cooperative jamming resource allocation based on integer-enc...

引用

4th IEEE International Conference on Electronic Information and Communication Technology, ICEICT 2021

作者： Xia, Jiechen Ma, Jing Li, Yibing Song, Mingzhao Harbin Engineering University Harbin150001 China Key Laboratory of Advanced Marine Communication and Information Technology Ministry of Industry and Information Technology Science and Technology on Special System Simulation Laboratory Beijing100854 China

ISBN: (纸本)9781665432030

Electromagnetic countermeasure (ECM) is of extreme importance in modern warfare. In order to confront the threat of radar-net, cooperative jamming platform with multiple jammers is the main approach. A proper allocation of jamming resource is required before and during the process of interference. This paper proposes an artificial bee colony (ABC) based jamming resource allocation (JRA) algorithm with few parameter adjustments. The allocation strategy is encoded in integer to better handle the constraints of JRA problem. Furthermore, a genetic algorithm (GA) inspired solution update method is introduced in stages of algorithm to accelerate the convergence rate. simulation result shows that the proposed algorithm has a better performance in both rate and precision of convergence compared with tabu search artificial bee colony algorithm (TSABC) and ant colony optimization algorithm (ACO), which were adopted in previous related studies. ©2021 IEEE

关键词： Tabu search

来源：评论

学校读者我要写书评

暂无评论

A mathematical reaction–diffusion model describing the connection between smokers and tuberculosis patients

引用

Partial Differential Equations in Applied Mathematics 2025年 14卷

作者： Khaloufi, Issam Karim, Marouane Rhila, Soukaina Ben Rachik, Mostafa Laboratory of Analysis Modelling and Simulation Department of Mathematics and Computer Science Faculty of Sciences Ben M'Sik Hassan II University Casablanca Casablanca Sidi Othman BP 7955 Morocco Multidisciplinary Research and Innovation Laboratory (LPRI) Moroccan School of Engineering Sciences (EMSI) Casablanca Morocco

In this paper, we introduce a new mathematical model that incorporates both temporal and spatial factors to characterize the relationship between the smoking population and tuberculosis (TB) cases. We validate the model's relevance by demonstrating the existence and positivity of the solutions. Furthermore, we propose three control measures aimed at reducing TB and smoking transmission, focusing on limiting contact between smokers and non-smokers, improving awareness of the health risks associated with smoking, and ensuring timely and effective medical treatment for TB patients. Mathematical analysis is employed to demonstrate the existence and characteristics of optimal controls for these strategies. The theoretical results are verified using numerical simulations, which also confirm the effectiveness of the suggested control strategies. Our results underline the importance of considering spatiotemporal dynamics in disease modeling and control, and they offer crucial insights for public health initiatives aimed at reducing the prevalence of smoking and TB. © 2025 The Authors

关键词： Mathematical model Optimal control Smoking Spatiotemporal dynamics Tuberculosis

来源：评论

学校读者我要写书评

暂无评论

Surface Uptake of Exogenous Volatile Organic Compounds Enhances the NO2-to-HONO Conversion on Soot

ACS ES&T Air

引用

ACS ES&T Air 2025年第6期2卷 1107-1114页

作者： Xinyuan Zhao Qiang Wang Peng Zhang Yonghong Wang Shuying Li Zhanyu Su Jun Liu Biwu Chu Qingxin Ma Yujing Mu Hong He College of Environmental Science and Engineering Beijing Forestry University Beijing 100083 China；State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China College of Environmental Science and Engineering Beijing Forestry University Beijing 100083 China State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China；Institute of Urban Environment Chinese Academy of Sciences Xiamen 361021 China；State Key Laboratory of Advanced Environmental Technology Institute of Urban Environment Xiamen 361021 China

Heterogeneous reduction of nitrogen dioxides (NO2) on soot has been suggested to be a source of nitrous oxide (HONO) in the atmosphere. However, conventional wisdom says that the contribution of NO2reduction on soot to HONO formation is limited due to the rapid deactivation of surface reductive sites in the atmosphere. On the contrary, we show that adsorbed anthropogenic and biogenic volatile organic compounds (VOCs), collectively called exogenous VOCs (EVOCs), can persistently promote the heterogeneous conversion of NO2to HONO on soot. The surface uptake of NO2driven by H2O, coupled with the hydrogen reduction of NO2supported by EVOCs on elemental carbon (EC), is proposed to be the key pathway causing the persistent production of HONO. Furthermore, field observation conducted during biomass burning seasons in the North China Plain also showed that the presence of EVOCs promotes HONO production significantly. Our results imply that the continuous adsorption and conversion of EVOCs on soot surfaces may have a remarkable enhancing impact on the persistent conversion of NO2to HONO in the atmosphere.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Compensation method of GPS signal delay based on factor graph 4

Compensation method of GPS signal delay based on factor grap...

引用

4th IEEE International Conference on Electronic Information and Communication Technology, ICEICT 2021

作者： Chen, Hangyu Ma, Jing Ye, Fang Harbin Engineering University Harbin150001 China Key Laboratory of Advanced Marine Communication and Information Technology Ministry of Industry and Information Technology Science and Technology on Special System Simulation Laboratory Beijing100854 China

ISBN: (纸本)9781665432030

In recent years, unmanned ground vehicles (UGVs) have been widely used in urban environments. The satellite positioning system plays an irreplaceable role in UGVs. However, the tall buildings in cities may cause interference to the transmission of satellite signals, which results in positioning delays, thus reducing the positioning accuracy of UGVs. To address this issue, a compensation method for information delay based on factor graph model is proposed in this paper. In the factor graph model utilized, the corresponding GPS factor node will not be generated when the GPS signal delay occurs at the current fusion time. The subsequent factor graph model is directly generated by the combined navigation system of visual odometry (VO) and inertial measurement unit (IMU). When the delayed GPS signal arrives, the measurement data of VO and IMU are used to compensate the delayed GPS positioning information. The compensated GPS positioning information is used to generate an additional factor node at the moment when the GPS signal actually arrives. This additional factor node is connected into the factor graph model for data fusion so that the delayed GPS positioning information can still be used to correct the positioning error. The method proposed in this paper effectively reduces the positioning error while taking into account the real-time performance. Experimental simulations show that the proposed method can reduce the positioning error while GPS signal delay occurs. ©2021 IEEE

关键词： Global positioning system

来源：评论

学校读者我要写书评

暂无评论

The impact of the atmospheric turbulence-development tendency on new particle formation: a common finding on three continents

引用

National science Review 2021年第3期8卷 140-150页

作者： Hao Wu Zhanqing Li Hanqing Li Kun Luo Yuying Wang Peng Yan Fei Hu Fang Zhang Yele Sun Dongjie Shang Chunsheng Liang Dongmei Zhang Jing Wei Tong Wu Xiaoai Jin Xinxin Fan Maureen Cribb Marc L.Fischer Markku Kulmala Tuukka Pet?j? State Key Laboratory of Remote Sensing Science College of Global Change and Earth System ScienceBeijing Normal University ESSIC and Department of Atmospheric Science University of MarylandCollege Park State Key Laboratory of Clean Energy Utilization Zhejiang University School of Atmospheric Physics Nanjing University of Information Science and Technology Meteorological Observation Center China Meteorological Administration State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric Physics Chinese Academy of Sciences State Key Joint Laboratory of Environmental Simulation and Pollution Control College of Environmental Sciences and Engineering Peking University State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Lawrence Berkeley National Laboratory Institute for Atmospheric and Earth System Research/Physics Faculty of ScienceUniversity of Helsinki Aerosol and Haze Laboratory Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical Technology Joint International Research Laboratory of Atmospheric and Earth System Sciences School of Atmospheric Sciences Nanjing University

A new mechanism of new particle formation(NPF) is investigated using comprehensive measurements of aerosol physicochemical quantities and meteorological variables made in three continents,including Beijing,China;the Southern Great Plains site in the USA;and SMEAR Ⅱ Station in Hyytiala,Finland.D espite the considerably different emissions of chemical species among the sites,a common relationship was found between the characteristics of NPF and the stability *** stability parameter(ζ=Z/L,where Z is the height above ground and L is the Monin-Obukhov length) is found to play an important role;it drops significantly before NPF as the atmosphere becomes more unstable,which may serve as an indicator of nucleation *** the atmosphere becomes unstable,the NPF duration is closely related to the tendency for turbulence development,which influences the evolution of the condensation ***,the unstable atmosphere may dilute pre-existing particles,effectively reducing the condensation sink,especially at coarse mode to foster *** new mechanism is confirmed by model simulations using a molecular dynamic model that mimics the impact of turbulence development on nucleation by inducing and intensifying homogeneous nucleation events.

关键词： new particle formation turbulence development molecular dynamic

来源：评论

学校读者我要写书评

暂无评论

Summer School on Circular Economy for Sustainable Manufacturing: A Case Study and Lessons Learned

引用

Procedia CIRP 2024年 122卷 952-957页

作者： Helmi Ben Rejeb Eñaut Muxika Pezhman Ghadimi Univ. Grenoble Alpes CNRS Grenoble INP G-SCOP Grenoble France Mondragon University Electronics & Computer Science Department - Signal Theory & Communications Arrasate Spain Laboratory for Advanced Manufacturing Simulation and Robotics School of Mechanical & Materials Engineering University College Dublin Belfield Dublin Ireland

The Circular Economy Action Plan is the main building block of the European Green Deal, Europe's new agenda for sustainable growth. Businesses need new technologies, new methods and new industrial organization either to create new businesses or to transform their products, processes and business models. They also need new talents to innovate, create businesses and new jobs, and transform society into a more sustainable one. Circular economy has grown significantly in recent years as a topic taught in engineering curricula. The purpose of this paper is to present the design, implementation and evaluation of a summer school program dedicated to the development, transformation and implementation of circular economy systems and new business models in manufacturing. The program was designed in collaboration with three university partners during a European project and relied on contributions from industrial companies, including start-ups and innovative companies. At the end, some lessons are drawn in order to show the main added value based on the evaluation of this summer school and to identify recommendations for the design and implementation of similar summer schools.

关键词： Circular economy summer school education sustainable manufacturing

来源：评论

学校读者我要写书评

暂无评论

Using AI libraries for Incompressible Computational Fluid Dynamics

arXiv

引用

arXiv 2024年

作者： Chen, Boyang Heaney, Claire E. Pain, Christopher C. Applied Modelling and Computation Group Department of Earth Science and Engineering Imperial College London SW7 2AZ United Kingdom Centre for AI-Physics Modelling Imperial-X Imperial College London W12 7SL United Kingdom Novel Reservoir Modelling and Simulation Group Department of Earth Science and Engineering Imperial College London London United Kingdom Data Assimilation Laboratory Data Science Institute Imperial College London SW7 2AZ United Kingdom

Recently, there has been a huge effort focused on developing highly efficient open source libraries to perform Artificial Intelligence (AI) related computations on different computer architectures (for example, CPUs, GPUs and new AI processors). This has not only made the algorithms based on these libraries highly efficient and portable between different architectures, but also has substantially simplified the entry barrier to develop methods using AI. Here, we present a novel methodology to bring the power of both AI software and hardware into the field of numerical modelling by repurposing AI methods, such as Convolutional Neural Networks (CNNs), for the standard operations required in the field of the numerical solution of Partial Differential Equations (PDEs). The aim of this work is to bring the high performance, architecture agnosticism and ease of use into the field of the numerical solution of PDEs. We use the proposed methodology to solve the advection-diffusion equation, the non-linear Burgers equation and incompressible flow past a bluff body. For the latter, a convolutional neural network is used as a multigrid solver in order to enforce the incompressibility constraint. We show that the presented methodology can solve all these problems using repurposed AI libraries in an efficient way, and presents a new avenue to explore in the development of methods to solve PDEs and Computational Fluid Dynamics problems with implicit methods. © 2024, CC BY.

关键词： Computational fluid dynamics

来源：评论

学校读者我要写书评

暂无评论

Method for constructing multi-dimensional feature map of malicious code 5

Method for constructing multi-dimensional feature map of mal...

引用

2020 5th International Seminar on Computer Technology, Mechanical and Electrical engineering, ISCME 2020

作者： Ma, Haocong Zhang, Ji Zhou, Junhua Zhai, Xiang Xue, Junjie Ji, Hang State Key Laboratory of Intelligent Manufacturing System Technology Beijing Institute of Electronic System Engineering Beijing100854 China School of Computer Science and Technology Beijing Institute of Technology Beijing100081 China Beijing Complex Product Advanced Manufacturing Engineering Research Center Beijing Simulation Center Beijing100854 China Science and Technology on Space System Simulation Laboratory Beijing Simulation Center Beijing100854 China

Malicious code is characterized by a large number of types, rapid increase in number, continuous update of transmission routes, and continuous enhancement of back analysis and back detection methods. Therefore, how to effectively detect and analyze malicious code has been a problem of great concern. This paper studies the features of binary file and disassembly file of malicious code, introduces the concept of information gain, and proposes a method to construct the multi-dimensional characteristic graph of malicious code. Finally, the convolutional neural network is used to classify the multi-dimensional feature graph of malicious code, which provides a new idea for the feature extraction of malicious code. © Published under licence by IOP Publishing Ltd.

关键词： Malware

来源：评论

学校读者我要写书评

暂无评论

How does the X(3872) show up in e+e− collisions: Dip versus peak

引用

Physical Review D 2024年第11期109卷 L111501-L111501页

作者： Vadim Baru Feng-Kun Guo Christoph Hanhart Alexey Nefediev Institut für Theoretische Physik II CAS Key Laboratory of Theoretical Physics School of Physical Sciences Peng Huanwu Collaborative Center for Research and Education Southern Center for Nuclear-Science Theory (SCNT) Institute of Modern Physics Institute for Advanced Simulation Jamova 39 1000 Ljubljana Slovenia CeFEMA Center of Physics and Engineering of Advanced Materials

We demonstrate that the dip observed near the total energy of 3872 MeV in the recent cross section data from the BESIII Collaboration for e+e−→J/ψπ+π− admits a natural explanation as a coupled-channel effect: it is a consequence of unitarity and a strong S-wave DD¯* attraction that generates the state X(3872). We anticipate the appearance of a similar dip in the e+e−→J/ψπ+π−π0 final state near the D*D¯* threshold driven by the same general mechanism, then to be interpreted as a signature of the predicted spin-2 partner of the X(3872).

关键词： Hadron production Exotic mesons Quarkonia

来源：评论

学校读者我要写书评

暂无评论

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

请选择保存的检索档案：

请选择收藏分类：

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

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

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：