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Attosecond ionization time delays in strong-field physics
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作者 马永哲 倪宏程 吴健 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第1期102-121,共20页
Electronic processes within atoms and molecules reside on the timescale of attoseconds. Recent advances in the laserbased pump-probe interrogation techniques have made possible the temporal resolution of ultrafast ele... Electronic processes within atoms and molecules reside on the timescale of attoseconds. Recent advances in the laserbased pump-probe interrogation techniques have made possible the temporal resolution of ultrafast electronic processes on the attosecond timescale, including photoionization and tunneling ionization. These interrogation techniques include the attosecond streak camera, the reconstruction of attosecond beating by interference of two-photon transitions, and the attoclock. While the former two are usually employed to study photoionization processes, the latter is typically used to investigate tunneling ionization. In this review, we briefly overview these timing techniques towards an attosecond temporal resolution of ionization processes in atoms and molecules under intense laser fields. In particular, we review the backpropagation method, which is a novel hybrid quantum-classical approach towards the full characterization of tunneling ionization dynamics. Continued advances in the interrogation techniques promise to pave the pathway towards the exploration of ever faster dynamical processes on an ever shorter timescale. 展开更多
关键词 strong-field ionization ATTOSECOND time delay photoionization time delay tunneling time delay attosecond streak camera reconstruction of attosecond beating by interference of two-photon transitions(RABBITT) attoclock backpropagation
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Adaptive predictor-based control for a helicopter system with input delays:Design and experiments
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作者 Siri Marte Schlanbusch Jing Zhou 《Journal of Automation and Intelligence》 2024年第1期50-56,共7页
In this paper,we consider a 2-degrees-of-freedom(DOF)helicopter system subject to long input delays and uncertain system parameters.To address the challenges including unknown system parameters and input delays in con... In this paper,we consider a 2-degrees-of-freedom(DOF)helicopter system subject to long input delays and uncertain system parameters.To address the challenges including unknown system parameters and input delays in control design,we develop an adaptive predictor-feedback control law to achieve trajectory tracking.Stability of the closed-loop system is further established,where the tracking errors are shown to converge towards zero.Through simulation and experiments on the helicopter system,we illustrate that tracking of a desired trajectory is achieved with the proposed control scheme. 展开更多
关键词 Adaptive control BACKSTEPPING Helicopter system Time delays
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Addressing diagnostic delays in inflammatory bowel diseases in Germany
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作者 Shi-Yan Zhang Yin Lin 《World Journal of Gastroenterology》 SCIE CAS 2024年第41期4484-4489,共6页
Inflammatory bowel diseases(IBDs),including Crohn's disease(CD)and ulcerative colitis,are chronic inflammatory conditions of the gastrointestinal tract that necessitate timely diagnosis to prevent complications an... Inflammatory bowel diseases(IBDs),including Crohn's disease(CD)and ulcerative colitis,are chronic inflammatory conditions of the gastrointestinal tract that necessitate timely diagnosis to prevent complications and improve patient outcomes.Despite advancements in medical knowledge and diagnostic techniques,significant diagnostic delays persist,particularly in CD.The study by Blüthner et al,published in the World Journal of Gastroenterology,elucidates the diagnostic delays experienced by German patients with IBD and identifies key risk factors contributing to these delays. 展开更多
关键词 Inflammatory bowel disease Crohn's disease Ulcerative colitis Diagnostic delay Physician diagnostic time Risk factors Early diagnosis Patient outcomes
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Lyapunov-Based Output Containment Control of Heterogeneous Multi-Agent Systems With Markovian Switching Topologies and Distributed Delays 被引量:1
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作者 Haihua Guo Min Meng Gang Feng 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2023年第6期1421-1433,共13页
This paper considers the mean square output containment control problem for heterogeneous multi-agent systems(MASs)with randomly switching topologies and nonuniform distributed delays.By modeling the switching topolog... This paper considers the mean square output containment control problem for heterogeneous multi-agent systems(MASs)with randomly switching topologies and nonuniform distributed delays.By modeling the switching topologies as a continuous-time Markov process and taking the distributed delays into consideration,a novel distributed containment observer is proposed to estimate the convex hull spanned by the leaders'states.A novel distributed output feedback containment controller is then designed without using the prior knowledge of distributed delays.By constructing a novel switching Lyapunov functional,the output containment control problem is then solved in the sense of mean square under an easily-verifiable sufficient condition.Finally,two numerical examples are given to show the effectiveness of the proposed controller. 展开更多
关键词 Heterogeneous multi-agent systems Lyapunov method Markovian switching topologies output containment control time delays
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Sliding Mode Control for Recurrent Neural Networks With Time-Varying Delays and Impulsive Effects
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作者 Lanfeng Hua Kaibo Shi +2 位作者 Zheng-Guang Wu Soohee Han Shouming Zhong 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2023年第5期1319-1321,共3页
Dear Editor,This letter studies the problem of sliding mode control(SMC)design for recurrent neural networks(RNNs)with impulsive disturbances and time-varying transmission delays.To this end,an appropriate integral sl... Dear Editor,This letter studies the problem of sliding mode control(SMC)design for recurrent neural networks(RNNs)with impulsive disturbances and time-varying transmission delays.To this end,an appropriate integral sliding surface function and SMC law are adopted for use under impulsive disturbances and time-varying delays. 展开更多
关键词 IMPULSIVE LETTER delays
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Position Measurement Based Slave Torque Feedback Control for Teleoperation Systems With Time-Varying Communication Delays
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作者 Xian Yang Jing Yan +1 位作者 Changchun Hua Xinping Guan 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2023年第2期388-402,共15页
Bilateral teleoperation system is referred to as a promising technology to extend human actions and intelligence to manipulating objects remotely.For the tracking control of teleoperation systems,velocity measurements... Bilateral teleoperation system is referred to as a promising technology to extend human actions and intelligence to manipulating objects remotely.For the tracking control of teleoperation systems,velocity measurements are necessary to provide feedback information.However,due to hardware technology and cost constraints,the velocity measurements are not always available.In addition,the time-varying communication delay makes it challenging to achieve tracking task.This paper provides a solution to the issue of real-time tracking for teleoperation systems,subjected to unavailable velocity signals and time-varying communication delays.In order to estimate the velocity information,immersion and invariance(I&I)technique is employed to develop an exponential stability velocity observer.For the proposed velocity observer,a linear relationship between position and observation state is constructed,through which the need of solving partial differential and certain integral equations can be avoided.Meanwhile,the mean value theorem is exploited to separate the observation error terms,and hence,all functions in our observer can be analytically expressed.With the estimated velocity information,a slave-torque feedback control law is presented.A novel Lyapunov-Krasovskii functional is constructed to establish asymptotic tracking conditions.In particular,the relationship between the controller design parameters and the allowable maximum delay values is provided.Finally,simulation and experimental results reveal that the proposed velocity observer and controller can guarantee that the observation errors and tracking error converge to zero. 展开更多
关键词 Asymptotic stability bilateral teleoperation time-varying delay velocity observer
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Hopf bifurcation and phase synchronization in memristor-coupled Hindmarsh–Rose and FitzHugh–Nagumo neurons with two time delays
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作者 郭展宏 李志军 +1 位作者 王梦蛟 马铭磷 《Chinese Physics B》 SCIE EI CAS CSCD 2023年第3期594-607,共14页
A memristor-coupled heterogenous neural network consisting of two-dimensional(2D)FitzHugh–Nagumo(FHN)and Hindmarsh–Rose(HR)neurons with two time delays is established.Taking the time delays as the control parameters... A memristor-coupled heterogenous neural network consisting of two-dimensional(2D)FitzHugh–Nagumo(FHN)and Hindmarsh–Rose(HR)neurons with two time delays is established.Taking the time delays as the control parameters,the existence of Hopf bifurcation near the stable equilibrium point in four cases is derived theoretically,and the validity of the Hopf bifurcation condition is verified by numerical analysis.The results show that the two time delays can make the stable equilibrium point unstable,thus leading to periodic oscillations induced by Hopf bifurcation.Furthermore,the time delays in FHN and HR neurons have different effects on the firing activity of neural network.Complex firing patterns,such as quiescent state,chaotic spiking,and periodic spiking can be induced by the time delay in FHN neuron,while the neural network only exhibits quiescent state and periodic spiking with the change of the time delay in HR neuron.Especially,phase synchronization between the heterogeneous neurons is explored,and the results show that the time delay in HR neurons has a greater effect on blocking the synchronization than the time delay in FHN neuron.Finally,the theoretical analysis is verified by circuit simulations. 展开更多
关键词 MEMRISTOR time delay heterogeneous neurons hopf bifurcation phase synchronization
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Cyclic-Pursuit-Based Circular Formation Control of Mobile Agents with Limited Communication Ranges and Communication Delays
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作者 Boyin Zheng Cheng Song Lu Liu 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2023年第9期1860-1870,共11页
This article addresses the circular formation control problem of a multi-agent system moving on a circle in the presence of limited communication ranges and communication delays.To minimize the number of communication... This article addresses the circular formation control problem of a multi-agent system moving on a circle in the presence of limited communication ranges and communication delays.To minimize the number of communication links,a novel distributed controller based on a cyclic pursuit strategy is developed in which each agent needs only its leading neighbour’s information.In contrast to existing works,we propose a set of new potential functions to deal with heterogeneous communication ranges and communication delays simultaneously.A new framework based on the admissible upper bound of the formation error is established so that both connectivity maintenance and order preservation can be achieved at the same time.It is shown that the multi-agent system can be driven to the desired circular formation as time goes to infinity under the proposed controller.Finally,the effectiveness of the proposed method is illustrated by some simulation examples. 展开更多
关键词 Circular formation control communication delays cyclic pursuit heterogeneous communication ranges
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Cascading Delays for the High-Speed Rail Network Under Different Emergencies:A Double Layer Network Approach
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作者 Xingtang Wu Mingkun Yang +3 位作者 Wenbo Lian Min Zhou Hongwei Wang Hairong Dong 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2023年第10期2014-2025,共12页
High-speed rail(HSR) has formed a networked operational scale in China. Any internal or external disturbance may deviate trains’ operation from the planned schedules, resulting in primary delays or even cascading del... High-speed rail(HSR) has formed a networked operational scale in China. Any internal or external disturbance may deviate trains’ operation from the planned schedules, resulting in primary delays or even cascading delays on a network scale. Studying the delay propagation mechanism could help to improve the timetable resilience in the planning stage and realize cooperative rescheduling for dispatchers. To quickly and effectively predict the spatial-temporal range of cascading delays, this paper proposes a max-plus algebra based delay propagation model considering trains’ operation strategy and the systems’ constraints. A double-layer network based breadth-first search algorithm based on the constraint network and the timetable network is further proposed to solve the delay propagation process for different kinds of emergencies. The proposed model could deal with the delay propagation problem when emergencies occur in sections or stations and is suitable for static emergencies and dynamic emergencies. Case studies show that the proposed algorithm can significantly improve the computational efficiency of the large-scale HSR network. Moreover, the real operational data of China HSR is adopted to verify the proposed model, and the results show that the cascading delays can be timely and accurately inferred, and the delay propagation characteristics under three kinds of emergencies are unfolded. 展开更多
关键词 Delay propagation double layer network high speed rail network max-plus algebra
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中国西南地区电解锰渣特性分析及影响因素研究 被引量:2
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作者 高红 何莉莉 +3 位作者 岳波 孟棒棒 闫敏婕 梁宇廷 《安全与环境学报》 CAS CSCD 北大核心 2024年第1期280-289,共10页
电解锰行业发展面临的困境之一是锰渣的处理处置方法。为探索绿色低碳的锰渣无害化处理技术,选取中国5家典型电解锰企业新、旧电解锰渣,通过其理化特性及浸出毒性分析,研究堆存条件、时间及工艺参数等因素对不同企业锰渣特性的影响。结... 电解锰行业发展面临的困境之一是锰渣的处理处置方法。为探索绿色低碳的锰渣无害化处理技术,选取中国5家典型电解锰企业新、旧电解锰渣,通过其理化特性及浸出毒性分析,研究堆存条件、时间及工艺参数等因素对不同企业锰渣特性的影响。结果显示:不同企业的新、旧锰渣平均质量含水率相差最大时均达19%以上,浸出液pH值最高分别相差0.95、1.45,不同企业新鲜锰渣的SiO_(2)和Al_(2)O_(3)平均质量分数最大相差分别为43.18%、146.25%,且可溶性盐质量分数均超过10%,未达到填埋入场标准。锰渣中石膏和石英的质量分数随堆存条件和时间发生不同的变化。企业C在堆存过程中石膏和石英的质量分数在增加,而企业E锰渣中烧石膏质量分数在增加,石英质量分数在减少。历史锰渣浸出液中Mn^(2+)和氨氮(NH_(4)^(+)N)的质量浓度较高,分别超过GB/T 8978—1996一级排放标准限值的65.92~935.00倍和2.56~63.80倍,表明长期堆存的锰渣仍存在较大的环境污染风险。不同地区企业的锰渣应通过无害化处理与资源化利用来降低其环境污染风险,须根据化学成分、理化性质不同选择合适的资源化方式。 展开更多
关键词 环境工程学 电解锰渣 无害化处理 资源化利用 理化性质 浸出毒性
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Investigation on maternal mortality in Southeast Asia,Europe and Africa using three delays model
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作者 Humna Baig Usama Javed Dua Noor Baig 《Nursing Communications》 2023年第20期1-5,共5页
Background:Maternal mortality is a prevalent issue in healthcare provision worldwide.It is particularly common in developing and underdeveloped countries,where maternal deaths during childbirth or pregnancy occur freq... Background:Maternal mortality is a prevalent issue in healthcare provision worldwide.It is particularly common in developing and underdeveloped countries,where maternal deaths during childbirth or pregnancy occur frequently.Various internal and external factors contribute to the high maternal mortality rate in specific regions.One model,known as the three delays model approach,examines three distinct causes that contribute to this problem.The first delay is the lack of awareness in seeking timely healthcare,the second delay involves obstacles in reaching healthcare facilities on time,and the third delay relates to poor or inadequate healthcare provision in tertiary care facilities.These delays are responsible for the elevated maternal mortality rates,with the prevalence of each delay varying across regions.Objective:The objective of this literature review is to examine and critically evaluate existing literature on perceptions and investigations regarding maternal mortality in Southeast Asia,Europe and Africa,utilizing the three delays model approach as a categorization framework.Method:This literature review followed BEME guide No.3.A total of 18 articles were included in the sample after conducting a thorough search of various databases and search engines.A Prisma flowchart was created,and the articles were critically appraised.Results:A total of 18 articles focusing on different regions were analyzed.The findings revealed that in countries of Southeast Asia,the primary cause of maternal mortality is the first delay,which refers to the lack of awareness in seeking medical care.On the other hand,in Africa and other European countries,the second and third delays are more prominently associated with maternal mortality.Conclusion:Inadequate care is one of the major causes of maternal mortality in majority of regions acrossthe globe.Multiple factors can hinder access to appropriate healthcare.The three delays model plays a significant role in the higher maternal mortality rate.By raising awareness among women and their families about the importance of seeking healthcare,the risk of fatality can be reduced.Similarly,in developing regions,it is crucial to ensure that healthcare facilities are easily accessible and provide high-quality emergency obstetric care to meet the needs of pregnant women in critical situations. 展开更多
关键词 maternal mortality three delays model CHILDBIRTH developing countries
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Hopf Bifurcation of Nonresident Computer Virus Model with Age Structure and Two Delays Effects
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作者 Yaoyu Dang Hongwu Tan Hui Cao 《Journal of Applied Mathematics and Physics》 2023年第8期2318-2342,共25页
This paper constructed and studied a nonresident computer virus model with age structure and two delays effects. The non-negativity and boundedness of the solution of the model have been discussed, and then gave the b... This paper constructed and studied a nonresident computer virus model with age structure and two delays effects. The non-negativity and boundedness of the solution of the model have been discussed, and then gave the basic regeneration number, and obtained the conditions for the existence and the stability of the virus-free equilibrium and the computer virus equilibrium. Theoretical analysis shows the conditions under which the model undergoes Hopf bifurcation in three different cases. The numerical examples are provided to demonstrate the theoretical results. 展开更多
关键词 The Computer Virus Model AGE-STRUCTURE Two delays Stability Hopf Bifurcation
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Perception-Based Assessment of the Factors Causing Delays in Construction Projects
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作者 Om Prakash Giri 《Engineering(科研)》 2023年第7期431-445,共15页
Construction delay is a widespread issue in the construction industry of developing countries, and Nepal is no exception. These delays extend project durations and lead to cost overruns and disputes among stakeholders... Construction delay is a widespread issue in the construction industry of developing countries, and Nepal is no exception. These delays extend project durations and lead to cost overruns and disputes among stakeholders. To address this problem, this study aimed to identify and analyze the significant factors that contribute to construction project delays in Nepal. To gather data, a well-structured questionnaire was developed and administered to a sample of 100 participants, including contractors, consultants, and civil engineers. Various statistical tests were conducted to ensure the data’s integrity and consistency, such as reliability assessments and factor analyses. The findings of the study highlighted multiple factors contributing to delays in construction projects such as inadequate design, poor communication, and coordination among stakeholders, insufficient experience and planning by contractors, delays in material delivery and testing, labor-related problems including shortages and low qualifications, and external factors like regulatory changes and unforeseen circumstances. By identifying these major causes of construction project delays, this study presented insightful information that can contribute to the analysis and evaluation of project performance. 展开更多
关键词 Construction Projects Construction Industry Delay Causes Construction De-lays Project Performance
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A Study of Radiation-Induced Instability for the Gene Locus Associated with Intellectual Disorders or Developmental Delays
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作者 Alan Chant Ahmad Chaudary Christina M. Kraemer-Chant 《Advances in Biological Chemistry》 2023年第4期128-142,共15页
Multiplex Ligation-Dependent Probe Amplification (MLPA) was used to study the integrity of the chromosomes for two WIL2-derived lymphoblastoid cell lines (TK6 and WTK1) in the presence and absence of ionizing radiatio... Multiplex Ligation-Dependent Probe Amplification (MLPA) was used to study the integrity of the chromosomes for two WIL2-derived lymphoblastoid cell lines (TK6 and WTK1) in the presence and absence of ionizing radiation. WTK1 cells contain a p53 mutation, whereas the TK6 cell line has the native p53 tumor-suppressor gene. Each cell line was isolated pre- and post-irradiation (2 and 3 Gy) and analyzed by MLPA. Using probes that target specific regions on chromosomes associated with a distinct subset of microdeletions and microduplications either established or thought to be responsible for intellectual disability or developmental delay, we have demonstrated that WTK1 and TK6 are not impacted in the same way by irradiation. Instead, each cell line presents its own unique MLPA profile. The most notable differences are the appearance of nine unique probe signals only seen in WTK1 cells. These results are important in the study of how different cell lines can be affected in significantly different ways depending on the presence or absence of wild type p53. 展开更多
关键词 Ionizing Radiation Multiplex Ligation-Dependent Probe Amplification (MLPA) Intellectual Disability (ID) Developmental Delay (DD) p53 Tumor Suppressor
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二次铝灰无害化处理和资源化利用研究进展 被引量:1
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作者 李亮星 董学舒 +2 位作者 程一 吴家航 王劲松 《轻金属》 2024年第4期5-12,共8页
二次铝灰是铝熔渣经提取金属铝后得到的固体废弃物,含有氮化铝以及盐类精炼剂,二次铝灰具有污染和资源的双重属性,长期堆存会对环境构成威胁,而夹杂其中的铝化合物可用于二次回收利用,缓解环境危机。目前,二次铝灰的回收利用方法主要包... 二次铝灰是铝熔渣经提取金属铝后得到的固体废弃物,含有氮化铝以及盐类精炼剂,二次铝灰具有污染和资源的双重属性,长期堆存会对环境构成威胁,而夹杂其中的铝化合物可用于二次回收利用,缓解环境危机。目前,二次铝灰的回收利用方法主要包括湿法冶金和火法冶金,湿法冶金主要是将二次铝灰进行溶解,提取里面的铝元素制备氧化铝、聚合氯化铝等;火法冶金主要是在高温条件下煅烧,制备微晶玻璃、耐火材料等。本文总结了二次铝灰的危害,概述了二次铝灰的无害化处理和资源化利用的现状,以期提高二次铝灰的资源化利用效率,降低二次铝灰对环境的污染。 展开更多
关键词 二次铝灰 危险废物 无害化处理 资源化利用
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碱烧结法回收二次铝灰中氧化铝
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作者 伍永福 鲍高战 +3 位作者 王日昕 刘中兴 练以诚 刘玉宝 《中国有色冶金》 CAS 北大核心 2024年第4期105-112,共8页
二次铝灰中蕴含大量的氧化铝、铝和氮化铝等,还有部分氟化物和氯化物盐类,属于危险废弃物。目前常用的铝回收技术有酸浸法和碱浸法,均存在工艺条件苛刻、回收率低、能耗高、物耗大和产品附加值较低等问题。本研究采用碱烧结法从二次铝... 二次铝灰中蕴含大量的氧化铝、铝和氮化铝等,还有部分氟化物和氯化物盐类,属于危险废弃物。目前常用的铝回收技术有酸浸法和碱浸法,均存在工艺条件苛刻、回收率低、能耗高、物耗大和产品附加值较低等问题。本研究采用碱烧结法从二次铝灰中回收氧化铝,考察烧结温度对氮化铝转化率的影响,碱铝比、烧结时间和成型方式对氧化铝回收率的影响,得到以下主要结论:在烧结温度1423 K、烧结时间40 min、碱铝比1.1、干压成型的试验条件下,氧化铝溶出率最大为94.23%;通过对二次铝灰铝酸钠熟料浸出渣成分以及物相进行分析,得到二次铝灰经过碱烧结法焙烧后熟料主要成分为Al_(2)O_(3)和Na_(2)O,分别占到49.70%和28.06%,熟料标准浸出后残渣主要成分为CaO、Al_(2)O_(3)和MgO,含量分别为25.46%、20.27%和15.80%;二次铝灰中AlN分解率较高,可达到95%以上,最终浸出渣中氟离子浸出毒性在30 mg/L以下。综上所述,本文采用碱烧结法资源化利用二次铝灰,实现了二次铝灰脱氮固氟的无害化处置,具有环境友好、资源利用率高的优势,为后续大规模工业化推广奠定了理论基础。 展开更多
关键词 二次铝灰 脱氮 固氟 铝回收 碱烧结法 无害化处置 浸出毒性 资源化利用
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我国黑水虻研究现状与展望——基于CiteSpace的可视化分析
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作者 温培华 《饲料工业》 CAS 北大核心 2024年第8期15-23,共9页
文章检索中文文献和国内机构中黑水虻的相关文献,运用CiteSpace可视化分析软件对2000—2023年已发表的黑水虻相关中、英文文献共670篇进行可视化分析。根据对文献的发文量、发表时间、作者、研究机构、关键词的分析,结果显示:黑水虻相... 文章检索中文文献和国内机构中黑水虻的相关文献,运用CiteSpace可视化分析软件对2000—2023年已发表的黑水虻相关中、英文文献共670篇进行可视化分析。根据对文献的发文量、发表时间、作者、研究机构、关键词的分析,结果显示:黑水虻相关文献发文时间集中在2016—2022年期间;国内的机构合作的群体较多,基本集中在西北地区;黑水虻的关键词分析主要集中在抗菌肽、资源化利用、血清生化指标、黑水虻幼虫、亮斑扁角水虻、幼虫、波长、产业化养殖这8个方面。综合以上分析结果,未来黑水虻的研究方向集中在黑水虻抗菌肽的推广应用、黑水虻资源产业化的运用、黑水虻养殖技术的升级应用、黑水虻幼虫饲料的开发应用这三个方面。 展开更多
关键词 黑水虻 可视化分析 CITESPACE 垃圾分类 无害化处理
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有机硅高沸物催化裂解技术进展
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作者 刘周恩 颜昌锐 +3 位作者 陈锦溢 王文金 华超 甘周清 《辽宁化工》 CAS 2024年第6期829-832,836,共5页
催化裂解技术可高效低能耗地资源化处理利用有机硅高沸物,有机硅高沸物催化裂解技术根据所用催化剂不同可分为氯化铝基催化裂解技术、有机胺基催化裂解技术、钯磷配位化合物基催化裂解技术、磷酸盐基催化裂解技术、过渡金属及其化合物... 催化裂解技术可高效低能耗地资源化处理利用有机硅高沸物,有机硅高沸物催化裂解技术根据所用催化剂不同可分为氯化铝基催化裂解技术、有机胺基催化裂解技术、钯磷配位化合物基催化裂解技术、磷酸盐基催化裂解技术、过渡金属及其化合物基催化裂解技术、分子筛和活性炭基催化裂解技术等。对这些技术的特点、发展现状和趋势进行了研究,为有效利用这些技术对有机硅高沸物通过催化裂解实现资源化处理利用提供技术支持。研究表明,有机胺基催化裂解技术相对其他技术具有其他技术无可比拟的技术优势,是未来有机硅高沸物催化裂解技术发展的一个趋势和热点。 展开更多
关键词 有机硅高沸物 催化裂解 无害化 资源化 处理技术
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2013—2022年中国各地区生活垃圾产生及处理特征分析
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作者 杨涛 谢斌 +2 位作者 李文卓 蔡家略 孙然 《生物化工》 CAS 2024年第4期78-82,共5页
随着我国经济的持续快速发展,物质生活发生了巨大变化,同时生活垃圾产生量呈现逐年快速增长趋势。为了解我国生活垃圾产生及处理特征,对2013—2022年我国各省(直辖市、自治区)数据进行统计,从生活垃圾产生量与人口、GDP的关系以及生活... 随着我国经济的持续快速发展,物质生活发生了巨大变化,同时生活垃圾产生量呈现逐年快速增长趋势。为了解我国生活垃圾产生及处理特征,对2013—2022年我国各省(直辖市、自治区)数据进行统计,从生活垃圾产生量与人口、GDP的关系以及生活垃圾处理方式与地区发展水平的关系两方面进行分析。研究表明,生活垃圾产生量受GDP影响大于人口数量影响。经济发展相对发达地区,生活垃圾无害化处理过程中卫生填埋法的比重通常较低,焚烧法与其他新型生活垃圾处理方法的占比较高。本研究可为我国生活垃圾资源化处理领域提供一定数据参考。 展开更多
关键词 生活垃圾 无害化处理 卫生填埋 焚烧
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无垫料病死畜禽无害化处理设备设计思路
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作者 陈金瑞 廖希彦 《福建农机》 2024年第2期31-33,45,共4页
简要介绍了福建省病死畜禽无害化处理主要方式,提出无垫料病死畜禽无害化处理的工艺流程,介绍了无害化处理设备结构设计思路和样机试验验证情况。
关键词 病死畜禽 无害化处理 无垫料 设备 设计
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