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协同处理废液的多喷嘴粉煤气化炉内反应流动研究

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化工学报 2023年第8期74卷 3266-3278页

作者：韩晨司徒友珉朱斌许建良郭晓镭刘海峰华东理工大学上海煤气化工程技术研究中心上海200237 宁夏宝丰能源集团股份有限公司宁夏银川750000

利用气化技术处理有机废液是废弃物资源化利用的新途径。以工业多喷嘴对置式粉煤气化炉为研究对象,采用数值模拟的方法研究了协同处理废液的气化炉内反应和流动过程。研究结果表明,废液的输入降低了出口合成气中CO的含量,增加了H_(2)、H... 详细信息

利用气化技术处理有机废液是废弃物资源化利用的新途径。以工业多喷嘴对置式粉煤气化炉为研究对象,采用数值模拟的方法研究了协同处理废液的气化炉内反应和流动过程。研究结果表明,废液的输入降低了出口合成气中CO的含量,增加了H_(2)、H_(2)O和CO_(2)的含量;废液输入使出口合成气温度降低,碳转化率降低,有效气收率增加。废液流阻挡了炉内上升折射流对顶部的冲击,降低了顶部空间的温度。气化炉顶部壁面的灰渣沉积速率随着废液增加呈现先增大后减小的趋势,其他部位壁面受影响较小。协同处理废液能够增加气化炉的有效气产量,延长顶部开工烧嘴的使用寿命,是良好的废弃物资源化利用途径。综合考虑,建议的废液输入量为12~14 t·h^(-1)。

关键词：煤气化多喷嘴耐火材料废物处理数值模拟

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Quantum Rings with Two Deeply Bound Electrons under a Magnetic Field

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Communications in Theoretical Physics 2007年第4期47卷 733-736页

作者： situ Shu-Ping Department of Physics Sun Yat-Sen University Guangzhou 510275 China

A model is proposed to study the quantum rings with two deeply bound electrons under a variable magnetic field. The emphasis is placed to clarify the effect of the size （diameter） and the width of the ring on the fractional Aharonov-Bohm oscillation. It was found that the reduction of size will lead to a very strong oscillation in the ground state energy and in the persistent current. The electronic correlation has also been demonstrated by showing the nodal structures of wave functions.

关键词： quantum ring fractional Aharonov-Bohm oscillation persistent current

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Photonics and AI——a symphony of light and intelligence

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Advanced Photonics 2024年第5期6卷 5-6页

作者： Guohai situ Yeshaiahu Fainman Chinese Academy of Sciences Shanghai Institute of Optics and Fine Mechanics Shanghai Institute of Laser Technology University of California San Diego Jacobs School of Engineering California

Artificial intelligence (AI),characterized by its capability in learning,comprehension,and problem solving,has emerged as a driving force in numerous fields,including *** recent Nobel Prizes in physics and chemistry serve as a testament to AI's transformative capabilities,showcasing its ability to solve intricate problems and make significant *** the realm of photonics,AI has opened doors to unprecedented advancements,from the design of novel materials and devices to the optimization of imaging systems and the enhancement of sensing capabilities.

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Deep holography

Light(Advanced Manufacturing) 2022年第2期3卷 100-122页

作者： Guohai situ Shanghai Institute of Optics and Fine Mechanics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China

With the explosive growth of mathematical optimization and computing hardware,deep neural networks(DNN)have become tremendously powerful tools to solve many challenging problems in various fields,ranging from decision making to computational imaging and *** this manuscript,I focus on the prosperous interactions between DNN and *** the one hand,DNN has been demonstrated to be in particular proficient for holographic reconstruction and computer-generated holography almost in every *** the other hand,holography is an enabling tool for the optical implementation of DNN the other way around owing to the capability of interconnection and light speed processing in *** purpose of this article is to give a comprehensive literature review on the recent progress of deep holography,an emerging interdisciplinary research field that is mutually inspired by holography and DNN.I first give a brief overview of the basic theory and architectures of DNN,and then discuss some of the most important progresses of deep holography.I hope that the present unified exposition will stimulate further development in this promising and exciting field of research.

关键词： Deep learning deep neural networks digital holography computer-generated hologram optical neural networks

Teleoperation with automatic posture regulation and broad learning control for assembly tasks

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Science China(Information Sciences) 2024年第11期67卷 359-360页

作者： Liwen situ Zhenyu LU Chenguang YANG School of Automation Science and Engineering South China University of Technology Bristol Robotics Laboratory University of the West of England

In recent years, robot teleoperation systems have been widely used in assembly tasks due to their ability to combine human control with robotic execution, addressing limitations in precision, perception, and intelligence faced by fully automated robots. However, robot teleoperation for assembly tasks still encounters several challenges. In complex and unstructured environments, telerobots must regulate the posture of their manipulators to avoid obstacles and singularities, ensuring the safety of human operators [1].

关键词： Remote control

Quantum speedup of twin support vector machines

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Science China(Information Sciences) 2020年第8期63卷 272-274页

作者： Zekun YE Lvzhou LI Haozhen situ Yuyi WANG School of Data and Computer Science Sun Yat-Sen University Ministry of Education Key Laboratory of Machine Intelligence and Advanced Computing (Sun Yat-Sen University) College of Mathematics and Informatics South China Agricultural University

Dear editor,Machine learning enables agents or computers to learn from data and improves the performance of specific tasks without requiring explicit programming. As the amount of available data continues to grow, existing machine learning algorithms cannot satisfy the efficiency requirements of various practical applications, and several methods have been

关键词： quantum computing quantum machine learning quantum algorithms twin support vector machines exponential speedup

Image encryption using spatial nonlinear optics

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eLight 2022年第1期2卷 32-41页

作者： Junfeng Hou Guohai situ Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences201800 ShanghaiChina Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences310024 HangzhouChina

Optical technologies have been widely used in information security owing to its parallel and high-speed processing ***,the most critical problem with current optical encryption techniques is that the cyphertext is linearly related with the plaintext,leading to the possibility that one can crack the system by solving a set of linear equations with only two cyphertext from the same encryption *** efforts have been taken in the last decade to resolve the linearity issue,but none of these offers a true nonlinear *** by the recent advance in spatial nonlinear optics,here we demonstrate a true nonlinear optical encryption *** show that,owing to the self-phase modulation effect of the photorefractive crystal,the proposed nonlinear optical image encryption technique is robust against the known plaintext attack based on phase *** opens up a new avenue for optical encryption in the spatial nonlinear domain.

关键词： Optical encryption Spatial nonlinear optics Self-defocusing

A cumulative damage model for predicting and assessing raveling in asphalt pavement using an energy dissipation approach

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Frontiers of Structural and Civil Engineering 2024年第6期18卷 949-962页

作者： Kailing DENG Duanyi WANG Cheng TANG Jianwen situ Luobin CHEN School of Civil Engineering and Transportation South China University of TechnologyGuangzhou 510640China

Raveling is a common distress of asphalt pavements,defined as the removal of stones from the pavement *** predict and assess raveling quantitatively,a cumulative damage model based on an energy dissipation approach has been developed at the meso *** construct the model,a new test method,the pendulum impact test,was employed to determine the fracture energy of the stone-mastic-stone meso-unit,while digital image analysis and dynamic shear rheometer test were used to acquire the strain rate of specimens and the rheology property of mastic,*** of the model reveals that when the material properties remain constant,the cumulative damage is directly correlated with loading time,loading amplitude,and loading ***,damage increases with superimposed linear and cosine variations over time.A higher stress amplitude results in a more rapidly increasing rate of damage,while a lower load frequency leads to more severe damage within the same loading ***,an example of the application of the model has been presented,showing that the model can be utilized to estimate failure life due to *** model is able to offer a theoretical foundation for the design and maintenance of anti-raveling asphalt pavements.

关键词： asphalt pavement raveling cumulative damage dissipation energy theory

Bidirectional Information Flow Quantum State Tomography

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Chinese Physics Letters 2021年第4期38卷 12-16页

作者： Huikang Huang Haozhen situ Shenggen Zheng College of Mathematics and Informatics South China Agricultural UniversityGuangzhou 510642China Circuits and Systems Research Center Peng Cheng LaboratoryShenzhen 518055China

The exact reconstruction of many-body quantum systems is one of the major challenges in modern physics,because it is impractical to overcome the exponential complexity problem brought by high-dimensional quantum manybody ***,machine learning techniques are well used to promote quantum information research and quantum state tomography has also been developed by neural network generative *** propose a quantum state tomography method,which is based on a bidirectional gated recurrent unit neural network,to learn and reconstruct both easy quantum states and hard quantum states in this *** are able to use fewer measurement samples in our method to reconstruct these quantum states and to obtain high fidelity.

关键词： quantum overcome exponential

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