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基于多源信息融合的核电施工扬尘预测控制算法

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上海电力大学学报 2024年第3期40卷 259-264页

作者：郭仕然王树昂李超王硕上海电力大学上海200090 中国核工业第五建设有限公司上海201512

为解决在核电施工中雾炮机工作时间过长导致水电资源浪费的问题,以一体化物联网网关为基础,通过多源信息的采集与融合,提出了一种扬尘预测控制算法。该算法根据施工现场和环境情况,从扬尘产生和降尘措施两方面进行量化研究,建立了扬尘... 详细信息

为解决在核电施工中雾炮机工作时间过长导致水电资源浪费的问题,以一体化物联网网关为基础,通过多源信息的采集与融合,提出了一种扬尘预测控制算法。该算法根据施工现场和环境情况,从扬尘产生和降尘措施两方面进行量化研究,建立了扬尘预测模型,对扬尘扩散进行预测,并根据预测结果控制雾炮机工作时长,以达到提前降尘和节能的目的。在核电现场进行了对比实验,结果表明,该算法在保障降尘效果基本不变的前提下,节约了60%左右的水电资源。

关键词：核电建筑工地多源数据物联网网关扬尘预测控制算法

基于融合注意力机制的并列GRU应用层协议识别方法

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上海电力大学学报 2024年第4期40卷 377-382页

作者：王硕杨昱黄琼李超郭仕然上海电力大学上海200090 中国核工业第五建设有限公司上海201512

针对并列门控循环神经网络(GRU)算法在处理序列信息时无法直接交流和共享信息,导致模块之间信息流动受限,从而影响准确率的问题,提出了一种基于融合注意力机制的并列GRU应用层协议识别方法。该方法利用注意力机制获得并列GRU算法中不同... 详细信息

针对并列门控循环神经网络(GRU)算法在处理序列信息时无法直接交流和共享信息,导致模块之间信息流动受限,从而影响准确率的问题,提出了一种基于融合注意力机制的并列GRU应用层协议识别方法。该方法利用注意力机制获得并列GRU算法中不同时间点输出之间的重要关系,使得模型能更好地捕获序列数据的特征信息,从而提高算法的准确率。在UNSW-NB15数据集上进行实验,结果表明:与并列GRU算法相比,所提算法的识别准确率提升了9.3%,且与其他代表性算法相比,准确率均有所提高。

关键词：门控循环神经网络注意力机制协议识别

Molecular identification of Nosema species in provinces of Fars,Chaharmahal and Bakhtiari and Isfahan(Southwestern Iran)

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Asian Pacific Journal of Tropical Biomedicine 2017年第1期7卷 10-13页

作者： Fatemeh Aroee Hamidreza Azizi Behrouz shiran Khodadad Pirali Kheirabadi Department of Pathobiology Faculty of Veterinary MedicineShahrekord UniversityShahrekordIran Department of Plant Breeding and Biotechnology Faculty of AgricultureShahrekord UniversityShahrekordIran

Objective: To molecularly identify Nosema species in provinces of Isfahan, Fars,Chaharmahal and ***: One hundred and eighty adult honey bees suspected with nosemosis from provinces of Fars(different counties), Isfahan, and Chaharmahal and Bakhtiari were tested. In order to determine the species of Nosema, previously developed PCR and primers based on 16 S r RNA gene were used. PCR products were puri fi ed and sent to the Korean company of Macrogen for ***: Only Nosema ceranae was determined in all samples based on their molecular profile. Sequences of the 16 S r RNA gene were sent to Gen Bank/NCBI(samples accession numbers KP318660–KP318663).Conclusions: This species currently exists in European honeybee apiaries of Apis mellifera in the studied provinces.

关键词： Microsporidia Nosema apis Nosema ceranae PCR

Effects of heat treatment on the intermetallic compounds and mechanical properties of the stainless steel 321–aluminum 1230 explosive-welding interface

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International Journal of Minerals,Metallurgy and Materials 2017年第11期24卷 1267-1277页

作者： Mohammadreza Khanzadeh Gharah shiran Gholamreza Khalaj Hesam Pouraliakbar Mohamma dreza Jandaghi Hamid Bakhtiari Masoud Shirazi Center for Advanced Engineering Research Majlesi Branch Islamic Azad University Isfahan *** Iran Young Researchers and Elite Club Saveh Branch Islamic Azad University Saveh *** Iran Young Researchers and Elite Club Science and Research Branch Islamic Azad University Tehran *** Iran Advanced Materials Research Center Faculty of Materials Engineering Najafabad Branch Islamic Azad University Najafabad *** Iran

The effects of heat treatment on the microstructure and mechanical properties of intermetallic compounds in the interface of stainless steel 321 explosively bonded to aluminum 1230 were investigated in this study. Experimental investigations were performed by optical microscopy, scanning electron microscopy, and microhardness and shear tensile strength testing. Prior to heat treatment, increasing the stand-off distance between samples from 1 to 2.5 mm caused their interface to become wavy and the thickness of intermetallic layers to increase from 3.5 to 102.3 μm. The microhardness increased from HV 766 in the sample prepared at a stand-off distance of 1 mm to HV 927 in the sample prepared at a stand-off distance of 2.5 mm; in addition, the sample strength increased from 103.2 to 214.5 MPa. Heat treatment at 450°C for 6 h increased the thickness of intermetallic compound layers to 4.4 and 118.5 μm in the samples prepared at stand-off distances of 1 and 2.5 mm, respectively. These results indicated that increasing the duration and temperature of heat treatment decreased the microhardness and strength of the interface of explosively welded stainless steel 321-Al 1230 and increased the thickness of the intermetallic region.

关键词： intermetallic compounds explosive welding heat treatment stand-off distance mechanical properties

Biocatalytic Synthesis of Fluorescent Conjugated Polyserotonin

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Journal of Renewable Materials 2019年第2期7卷 205-214页

作者： Weeradech Kiratitanavit Ferdinando F.Bruno Zhiyu Xia shiran Yu Jayant Kumar Ramaswamy Nagarajan Department of Plastics Engineering University of Massachusetts LowellLowell01854USA Soldier Protection and Survivability Directorate US Army Combat Capabilities Development Command Soldier CenterNatick01760USA Center for Advanced Materials University of Massachusetts LowellLowell01854USA.4Department of Physics&Applied PhysicsUniversity of Massachusetts LowellLowell01854USA Department of Physics&Applied Physics University of Massachusetts LowellLowell01854USA

Polyserotonin was enzymatically synthesized using Horseradish peroxidase(HRP)as the *** novel conjugated polymer exhibited good fluorescent properties with significantly higher Stokes shift than its *** enzymatic polymerization eliminated the need for extensive purification of the product(typically necessary for the removal of residual metal catalyst)allowing the product to be naturally fluorescent as *** reaction was monitored using UV-Vis spectrophotometry and the polymers were characterized using Fluorescence,Fourier Transform Infrared Spectroscopy(FTIR)and *** possibility of using polyserotonin for the detection of nitro-aromatic compounds,including 2,4-dinitrotoluene(DNT)and trinitrotoluene(TNT),through fluorescence quenching at parts per million levels in solution has also been demonstrated.

关键词： Polyserotonin enzymatic polymerization fluorescence sensing

Evolution of surface of Pd-Rh bimetallic nanocubes and its correlation with CO oxidation

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Science China Materials 2019年第1期62卷 103-114页

作者： Wei Zhu Junjun Shan Luan Nguyen shiran Zhang Franklin Feng Tao Ya-Wen Zhang Beijing National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and Applications PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry College of Chemistry and Molecular Engineering Peking University Department of Chemical and Petroleum Engineering and Department of Chemistry University of Kansas

Typically, varying pretreatment conditions probably results in the different catalytic performances for the bimetallic catalysts, and this originates from the surface evolution of catalysts during catalytic process. Hence, it is crucial to correlate surface chemistry(e.g., composition, chemical valence, etc.) of bimetallic nanocatalysts with their corresponding performances upon different pretreatments for the fundamental understanding of catalysis. Herein, compositionvaried(100) facet terminated Pd-Rh nanocubes(NCs) with the similar shape and sizes were prepared by a facile one-pot hydrothermal method to exclude the possible size and shape effect. Surface composition and valence state of these Pd0.8 Rh0.2, Pd0.6 Rh0.4, and Pd0.2 Rh0.8 NCs were tracked under different reaction conditions and during catalysis using a homebuilt ambient pressure X-ray photoelectron spectrometer(APXPS). The correlation of active surface of Pd-Rh NCs and their corresponding catalytic performance was established.

关键词： controUable synthesis bimetallic nanocubes ambient-pressure XPS CO oxidation surface chemistry

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基于激光测振的海上风电齿轮箱在线监测系统

机电设备 2024年第5期41卷 25-29页

作者：张天保陈力高华云刘乐李诗然中国船舶集团有限公司第七一三研究所

海上风力发电机组的运维受潮汐、台风和团雾等海况影响，维护难度大，作业时间短。风电齿轮箱是海上风力发电机组重要的传动机构，其可靠平稳运行对海上风力发电的安全性和经济性起着至关重要的作用。基于激光测振技术，搭建海上风电齿... 详细信息

海上风力发电机组的运维受潮汐、台风和团雾等海况影响，维护难度大，作业时间短。风电齿轮箱是海上风力发电机组重要的传动机构，其可靠平稳运行对海上风力发电的安全性和经济性起着至关重要的作用。基于激光测振技术，搭建海上风电齿轮箱在线监测系统，结合齿轮箱的结构组成和故障特征研究现场测点分布，阐述振动信号分析方法，为海上风电齿轮箱的运行状态的判断和潜在故障的预警提供了技术支撑。

关键词：海上风电齿轮箱在线监测激光测振

Ultrasensitive electrolyte-assisted temperature sensor

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npj Flexible Electronics 2020年第1期4卷 203-209页

作者： Mina shiran Chaharsoughi Jesper Edberg Peter Andersson Ersman Xavier Crispin Dan Zhao Magnus P.Jonsson Laboratory of Organic Electronics Department of Science and TechnologyLinköping UniversitySE-60174NorrköpingSweden RISE Research Institutes of Sweden Bio-and Organic ElectronicsBredgatan 3360221NorrköpingSweden

Heat sensors form an important class of devices that are used across multiple fields and *** applications such as electronic skin and health monitoring,it is particularly advantageous if the output electronic signals are not only high,stable,and reproducible,but also self-generated to minimize power ***,we present an ultrasensitive heat sensing concept that fulfills these criteria while also being compatible with scalable low-cost manufacturing on flexible *** concept resembles a traditional thermocouple,but with separated electrodes bridged by a gel-like electrolyte and with orders of magnitudes higher signals(around 11 mV K^(−1)).The sensor pixels provide stable and reproducible signals upon heating,which,for example,could be used for heat *** modification to plasmonic nanohole metasurface electrodes made the sensors capable of also detecting light-induced ***,we present devices on flexible substrates and show that they can be used to detect human touch.

关键词： electrolyte sensor heating

光沉积Pt复合石墨相氮化碳实现高效光催化产氢

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复合材料学报 2024年第1期41卷 219-226页

作者：牛凤延何齐升武世然郭晨曦雷伟岩沈毅华北理工大学材料科学与工程学院唐山063210 华北理工大学矿业与工程学院唐山063210

贵金属作为助催化剂,可以提高石墨相氮化碳(g-C_(3)N_(4))光催化产氢的性能,引起了人们的广泛关注。但是,由于贵金属的不可再生性和高价格,“更少的贵金属,更好的性能”始终是目标。为了实现这一目标,通过光沉积还原法成功制备了一系列... 详细信息

贵金属作为助催化剂,可以提高石墨相氮化碳(g-C_(3)N_(4))光催化产氢的性能,引起了人们的广泛关注。但是,由于贵金属的不可再生性和高价格,“更少的贵金属,更好的性能”始终是目标。为了实现这一目标,通过光沉积还原法成功制备了一系列不同铂负载量氮化碳复合材料(Pt/CN),并用于光催化产H_(2)。结果表明:不同Pt负载量的Pt/CN复合材料都表现出优异的光催化产氢性能。并发现当Pt的负载量为0.5wt%时,Pt/CN复合材料具有最优异的光催化产氢活性,产氢量为409.2μmol/g,是纯CN(17.8μmol/g)的23倍,同时证实了Pt和CN二者之间形成了肖特基势垒,使导带的电子快速迁移到Pt上,降低了CN的电子-空穴复合速率。并且Pt作为光催化分解水的活性位点,促进水中的绝大部分氢质子快速吸附到Pt位点,得到电子被还原为H_(2),实现了高效光催化产氢。

关键词：石墨相氮化碳光催化产氢铂光沉积复合比