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Experimental Research of Concrete with Steel Slag Powder and Zeolite Powder

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Journal of Renewable Materials 2020年第12期8卷 1647-1655页

作者： Yang Ming Ping Chen Yuanhao Wang Ling Li Xuandong Chen pengliang Sun Guangxi Key Laboratory of New Energy and Building Energy Saving Guilin541004China College of Civil and Architecture Engineering Guilin University of TechnologyGuilin541004China Guangxi Beibu Gulf Engineering Research Center for Green Marine Materials Guilin541004China School of Chemical Science and Technology Yunnan UniversityKunming650091China

In order to increase use ratio of steel slag solid waste,the concrete containing steel slag powder and zeolite powder as admixtures was prepared by using the orthogonal test *** effects of water-binder ratio,sand ratio,steel slag powder content and zeolite powder on working properties,mechanical strength and chloride ion permeability of the concrete was *** was found that the early strength of the concrete had a decrease with the mixing of steel slag and zeolite powders,but its later strength approached to pure ***,the physical filling and pozzolanic activity of the admixtures increased the density of the concrete,resulting in the improvement of the durability of the concrete by the migration speed of Cl−*** optimum mix ratio of C40 steel slag powder-zeolite powder concrete is obtained,and which had the slump of 220 mm,the 3 d,7 d and 28 d compressive strengths of 27.8 MPa,37.5 MPa and 48.4 MPa,the 6 h electric flux of 950 C and the diffusion coefficient of 1.65×10−12 m2/s.

关键词： Concrete steel slag powder zeolite powder compressive strength chloride ion permeability

Effects of Clinker Contents of Different C_3A and C_4AF on the Performance of PSC Cement

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Journal of Wuhan University of Technology(Materials Science) 2013年第3期28卷 521-526页

作者：万惠文吴有武 CHEN Chao WEI pengliang GAO Zhifei State Key Laboratory of Silicate Materials for Architectures Wuhan University of Technology

Phosphogypsum-slag-clink （PSC） cement were prepared by original phosphogypsum（PG）, which was grinded after dried at 60 ℃combined with different contents of phosphogypsum （15%, 20%, 30%）, and a small amount of different C3A, C4AF contents of finely ground cement clinker, and ground granulated blast furnace slag （GGBFS）. Physical mechanical and sugaring properties were studied. The results show that compressive strength of PSC cement with 20% phosphogypsum at 3 d ages would be higher than 17 MPa and even 50 MPa at 28 days. Compressive strength at longer curing stage and sugaring properties of PSC with lower content of C3A higher C4AF clinker were improved, pH value of PSC cement system at early stage was relatively low, and pH gradually increased with the addition of clinker, pH increased firstly and then decreased with the hydration stage. SEM analyses showed that the amount of ettringite, which was influenced by pH and content of A1, must be controlled in PSC cement system, which may cause damage to microstructure or even expansive cracks if large amount of ettringite formed in hardened paste.

关键词： phosphogypsurn clinker ettringite surface sugaring

Self-error-rejecting photonic qubit transmission in polarization-spatial modes with linear optical elements

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Science China(Physics,Mechanics & Astronomy) 2017年第12期60卷 12-18页

作者： YuXiao Jiang pengliang Guo ChengYan Gao HaiBo Wang Faris Alzahrani Aatef Hobiny FuGuo Deng Department of Physics Applied Optics Beijing Area Major Laboratory Beijing Normal University NAAM-Research Group Department of Mathematics Faculty of Science King Abdulaziz University

We present an original self-error-rejecting photonic qubit transmission scheme for both the polarization and spatial states of photon systems transmitted over collective noise channels. In our scheme, we use simple linear-optical elements, including half-wave plates, 50:50 beam splitters, and polarization beam splitters, to convert spatial-polarization modes into different time bins. By using postselection in different time bins, the success probability of obtaining the uncorrupted states approaches 1/4 for singlephoton transmission, which is not influenced by the coefficients of noisy channels. Our self-error-rejecting transmission scheme can be generalized to hyperentangled n-photon systems and is useful in practical high-capacity quantum communications with photon systems in two degrees of freedom.

关键词：光子传输光学元件和空间偏振态线性偏振分束器传输方案噪声信道

Experimental and Numerical Study on the Gas Explosion in Urban Regulator Station

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Journal of Beijing Institute of Technology 2020年第2期29卷 195-208页

作者： Zhenyi Liu Yuanyuan Ma Yuan Ren Mingzhi Li pengliang Li Song Wan State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing 100081China QHSE Department Sino-Pipeline International Company Ltd.Beijing 102206China

Regulator station is an important part in the urban gas transmission and distribution *** gas explosion occurs,the real explosion process and consequences of methane gas explosion in the regulator station were not revealed *** this study,a full-scale experiment was carried out to simulate the regulator station explosion process,and some numerical simulations with a commercial CFD software called FLACS were conducted to analyze the effect of ignition and vent conditions on the blast overpressure and flame *** experimental results demonstrated that the peak overpressure increased as the distance from the vent increased within a certain *** the maximum overpressure appeared 3 m away from the door,which was about 36.6 *** was found that the pressure-time rising curves obtained from the simulation are basically the same as the ones from the experiment,however,the time of reaching the peak pressure was much *** numerical simulation results show that the peak overpressures show an increase trend as the ignition height decreased and the vent relief pressure *** indicates that the damage and peak overpressure of gas explosion could be well predicted by FLACS in different styles of regulator *** addition,the results help us to understand the internal mechanism and development process of gas explosion *** also offers technical support for the safety protection of the urban regulator station.

关键词： regulator station gas explosion full-scale experiment numerical simulation overpressure distribution

Coffee Flower Identification Using Binarization Algorithm Based on Convolutional Neural Network for Digital Images

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Plant Phenomics 2020年第1期2卷 299-313页

作者： pengliang Wei Ting Jiang Huaiyue Peng Hongwei Jin Han Sun Dengfeng Chai Jingfeng Huang Institute of Applied Remote Sensing and Information Technology Zhejiang UniversityHangzhou 310058China Jiangsu Radio Scientific Institute Co. Ltd.Wuxi 214073China Innovation Institute of Disaster Prevention and Reduction at Inner Mongolia Huhhot 010051China Institute of Spatial Information Technique Zhejiang UniversityHangzhou 310027China Electrical Engineering and Computer Science University of CaliforniaMercedCA 95343USA

Crop-type identification is one of the most significant applications of agricultural remote sensing,and it is important for yield estimation prediction and field *** present,crop identification using datasets from unmanned aerial vehicle(UAV)and satellite platforms have achieved state-of-the-art ***,accurate monitoring of small plants,such as the coffee flower,cannot be achieved using datasets from these *** the development of time-lapse image acquisition technology based on ground-based remote sensing,a large number of small-scale plantation datasets with high spatial-temporal resolution are being generated,which can provide great opportunities for small target monitoring of a specific *** main contribution of this paper is to combine the binarization algorithm based on OTSU and the convolutional neural network(CNN)model to improve coffee flower identification accuracy using the time-lapse images(i.e.,digital images).A certain number of positive and negative samples are selected from the original digital images for the network model ***,the pretrained network model is initialized using the VGGNet and trained using the constructed training *** on the well-trained CNN model,the coffee flower is initially extracted,and its boundary information can be further optimized by using the extracted coffee flower result of the binarization *** on the digital images with different depression angles and illumination conditions,the performance of the proposed method is investigated by comparison of the performances of support vector machine(SVM)and CNN ***,the experimental results show that the proposed method has the ability to improve coffee flower classification *** results of the image with a 52.5°angle of depression under soft lighting conditions are the highest,and the corresponding Dice(F1)and intersection over union(IoU)have reached 0.80 and 0.67,respectively.

关键词： network image union

A review of some methodological developments on full waveform inversion tackled in the SEISCOPE group

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石油物探 2017年第1期56卷 3-19页

作者： Romain BROSSIER Ludovic METIVIER Jean VIRIEUX YANG pengliang ZHOU Wei Univ.Grenoble Alpes ISTerre Grenoble France Univ. Grenoble Alpes CNRS LJK Grenoble France

Full waveform inversion(FWI)is a data-fitting inverse problem aiming to delineate high-resolution quantitative images of the *** its basic principle has been proposed in the eighties,the approach has been significantly developed and applied to2Dand 3Dproblems at various scales for the last fifteen *** these successes,FWI is still facing some issues for applications in complex geological setups because of some lack of robustness and automatic workflow,while being computationally *** this paper,after a short review of the basic FWI formulation and analysis of the FWI gradient,three recent methodological developments performed in the frame of the SEISCOPE project are ***,an algorithmic development is presented as a low-memory and computationally efficient approach for building the time-domain FWI gradient in 3Dviscous ***,a reformulation of FWI is performed to handle reflections in their tomography regime while still using the diving waves,leading to the joint full waveform inversion(JFWI)***,an optimal transport approach is proposed as an alternative to the classical difference-based misfit for mitigating the cycle-skipping issue.

关键词：全波形反演随机边界异构并行作业池速度反演

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基于阵列天线波束形成的卫星导航信号提纯

北京航空航天大学学报 2022年第10期48卷 1906-1914页

作者：史鹏亮王晓宇薛瑞北京航空航天大学电子信息工程学院北京100083 空军研究院北京100085 中国电子科技集团公司第二十研究所导航专业部西安710072

围绕对卫星导航信号实施转发式欺骗所需的卫星导航信号提纯要求,提出了一种数字波束形成的优化设计方法。通过向阵列天线接收信号的数据协方差矩阵加载由非目标卫星方向信息和阵列布局构造的“虚拟”干扰信号协方差矩阵,增大了协方差矩... 详细信息

围绕对卫星导航信号实施转发式欺骗所需的卫星导航信号提纯要求,提出了一种数字波束形成的优化设计方法。通过向阵列天线接收信号的数据协方差矩阵加载由非目标卫星方向信息和阵列布局构造的“虚拟”干扰信号协方差矩阵,增大了协方差矩阵特征值的差异。用新构造的协方差矩阵计算最小方差无失真响应波束形成的加权向量,使波束指向方向的目标卫星信号无失真通过,并同时零陷其他非目标卫星的信号。通过计算机仿真试验验证了所提方法的正确性和有效性。

关键词：卫星导航阵列天线提纯波束形成空域滤波

Metastatic patterns and surgical methods for lymph nodes No.5 and No.6 in proximal gastric cancer

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Chinese Journal of Cancer Research 2019年第1期31卷 171-177页

作者： Jinou Wang Pei Wu Zhenning Wang Kai Li Baojun Huang pengliang Wang Huimian Xu Zhi Zhu Department of Pathology Shengjing Hospital of China Medical UniversityShenyang 110001China Department of Surgical Oncology the First Hospital of China Medical UniversityShenyang 110001China

Objective: The current surgical treatment guidelines for early proximal gastric cancer(PGC) still lack agreement. Lymphadenectomy of lymph nodes No. 5 and No. 6 is the major difference between total and proximal gastrectomy. We elucidated the appropriate surgical procedure for PGC by investigating the pathological characteristics and prognostic significance of lymph nodes No. 5 and No. ***: In total, 333 PGC patients who underwent total gastrectomy were enrolled in this study. We investigated their clinicopathological characteristics and the metastatic patterns of the lymph nodes. Patients with metastasis in lymph nodes No. 5 and No. 6 were combined into one group and we compared the difference in survival between those with and without metastasis in lymph nodes No. 5, 6(lymph nodes No. 5 and No. 6 in any group of metastasis) for different ***: The metastatic rates for lymph nodes No. 5 and No. 6 in PGC were 9.91% and 16.11%, *** metastatic rate for both lymph nodes No. 5, 6 was 20.42%. Multivariate analysis showed that positive metastasis in lymph node No. 4, depth of invasion, and tumor size were independently correlated with the presence of metastasis in lymph nodes No. 5, ***: When lymph node No. 4 is positive(intraoperative pathology) or tumor size ≥5 cm or T4 stage,lymphadenectomy should be performed for lymph nodes No. 5 and No. 6, and total gastrectomy is recommended.

关键词： Gastrectomy lymph nodes No.5 and No.6 metastasis prognosis proximal gastric cancer

Inhibition of spore germination of Ulva pertusa by the marine bacterium Pseudoalteromonas haloplanktis CI4

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Acta Oceanologica Sinica 2010年第1期29卷 69-78页

作者： MA Yuexin LIU pengliang ZHANG Yongsheng CAO Shanmao LI Dantong CHEN Wei Key Laboratory of Mariculture Ministry of Agriculture Dalian Fisheries University Dalian116023 China

The effect of the bacterial strain C14 on the germination of spores from the green alga Ulva pertusa was assayed and it was found that the bacterial biofilm and cell-free supernatant strongly inhibited spore germination. In attempts to define the chemical nature of she antifouling substance in the supernatant of C14, the culture supernatants were tested for activity after heat treatment, enzymatic treatments, size fractionation, and separation into aqueous and organic fractions. Results suggest that this bacterium produces an extracellular component with specific activity toward algal spores that was heat-sensitive and between 3 and 10 kDa in molecular size. The exposure of the organic phase fraction to spores showed inhibitive effect on spore germination. Pronase and carboxypeptidase y did not significantly affect the activity of inhibitory component, suggesting that the component was not a protein or a peptide. The bacterium C14 was identified as Pseudoalteromonas haloplanktis based on the phenotypic characters and 16S rRNA gene analvsis.

关键词： Pseudoaltcromonas antifouling bacterium Ulva pertusa biofouling anti-algal activity