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Fluidized roasting reduction kinetics of low-grade pyrolusite coupling with pretreatment of stone coal

International Journal of Minerals,Metallurgy and Materials 2013年第3期20卷 221-227页

作者： Ya-li Feng Zhen-lei Cai Hao-ran Li Zhu-wei Du Xin-wei Liu School of Civil and Environmental Engineering University of Science and Technology Beijing State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences

Based on the fluidized roasting reduction technology of low-grade pyrolusite coupling with pretreatment of stone coal, the manganese reduction efficiency was investigated and technical conditions were optimized. It is found that the optimum manganese reduction efficiency can be up to 98.97% under the conditions that the mass ratio of stone coal to pyrolusite is 3：1, the roasting temperature of stone coal is 1000℃, the roasting temperature of pyrolusite is 800℃, and the roasting time is 2 h. Other low-grade pyrolusite ores in China from Guangxi, Hunan, and Guizhou Provinces were tested and all these minerals responded well, giving -99% manganese reduction efficiency. Meanwhile, the reduction kinetic model has been established. It is confirmed that the reduction process is controlled by the interface chemical reaction. The apparent activation energy is 36.397 kJ/mol.

关键词： pyrolusite ore roasting ore reduction fluidized beds kinetics stone coal

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Composite Nonlinear Trajectory Tracking Control of Co-Driving Vehicles Using Self-Triggered Adaptive Dynamic Programming

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IEEE Transactions on Consumer Electronics 2025年

作者： Hu, Chuan Ge, Sicheng Shi, Yingkui Gao, Weinan Guo, Wenfeng Zhang, Xi Shanghai Jiao Tong University Intelligent Vehicle Institute School of Mechanical Engineering Shanghai200240 China Shanghai Jiao Tong University School of Mechanical Engineering Shanghai200240 China Northeastern University State Key Laboratory of Synthetical Automation for Process Industries Shenyang110819 China Tsinghua University School of Vehicle and Mobility Beijing100190 China

This article presents a composite nonlinear feedback (CNF) control method using self-triggered (ST) adaptive dynamic programming (ADP) algorithm in a human-machine shared steering framework. For the overall system dynamics, a two-degrees-of-freedom (2-DOF) vehicle model is established and a two-point preview driver model is adopted. A dynamic authority allocation strategy based on cooperation level is proposed to combine the steering input of the human driver and the automatic controller. To make further improvements in the controller design, three main contributions are put forward. Firstly, the CNF controller is designed for trajectory tracking control with refined transient performance. Besides, the self-triggered rule is applied such that the system will update in discrete times to save computing resources and increase efficiency. Moreover, by introducing the data-based ADP algorithm, the optimal control problem can be solved through iteration using system input and output information, reducing the need for accurate knowledge of system dynamics. The effectiveness of the proposed control method is validated through Carsim-Simulink co-simulations in diverse driving scenarios. © 2025 IEEE. All rights reserved.

关键词： Steering

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Microbial dynamics and CO consumption enhancement via co-digestion with carbohydrate-rich synthetic wastewater

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Science of the Total Environment 2025年 968卷 178887页

作者： Li, Chunxing Bao, Ruihan Sun, Yan Quan, Jiawei Angelidaki, Irini Yuan, Zengwei State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing210023 China Lishui Institute of Ecology and Environment Nanjing University Nanjing211200 China Department of Chemical and Biochemical Engineering Technical University of Denmark Kgs. LyngbyDK-2800 Denmark

Due to the toxicity and low mass transfer of CO, its efficient conversion is crucial for syngas biomethanation. In the present study, anaerobic co-digestion of CO and carbohydrate-rich synthetic wastewater was conducted to facilitate the CO conversion performance, followed by microbial analysis with and without methanogenic activity inhibition (namely, digestion and acidification systems). The results indicated that glucose addition in co-digestion system dramatically enhanced CO consumption. The maximum consumption rate (μ-max) of CO increased by about 65 % with adding glucose. However, CO presented partial inhibition on methanogenic activity without declining methane yield. Microbial analysis showed that microbial diversity increased in co-digestion systems. Hydrogenotrophic methanogens from Methanobrevibacter became dominant in all individual and co-digested systems. Methanogenic activity inhibited community proved the bacteria mainly mediated CO conversion, and glucose addition promoted the growth of acetogenic bacteria from Firmicutes, relating to the enhancement in CO consumption. Species from Synergistota worked as the main syntrophic oxidizers, along with Defluviitoga, Syntrophomonas, and Syntrophaceticus, assisting methane production by hydrogenotrophic methanogens. The outcomes in the present study supply an efficient strategy for synergetic treatment of syngas (CO-rich gas) and organic waste/wastewater for energy recovery. © 2025 Elsevier B.V.

关键词： Carbohydrate-rich synthetic wastewater Carbon monoxide Carboxydotroph Co-digestion Microbial analysis Syngas biomethanation

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Preparation and surface modification of magnetic poly(methyl methacrylate) microspheres

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Science China Chemistry 2004年第4期47卷 349-354页

作者： YANG Chengli GUAN Yueping XING Jianmin LIU Junguo AN Zhentao LIU Huizhou Laboratory of Separation Science and Engineering State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of Sciences Beijing 100080 China

A novel method for preparation of magnetic polymer microspheres by spraying suspension polymerization (SSP) was developed. Relatively uniform magnetic poly(methyl methacrylate) microspheres were prepared by the spraying suspension polymerization (SSP) using methyl methacrylate (MMA) as monomer, divinylbenzene (DVB) as cross-linking agent, benzoyl peroxide (BPO) as initiator and polyvinyl alcohol (PVA) as stabilizer in the presence of hydrophobic Fe3O4 magnetic fluid. The microspheres prepared were modified by surface chemical reaction. The magnetic properties and morphology of the microspheres were examined by SEM and VSM respectively. The active functional groups of microspheres were examined by infrared spectra. The results showed that microspheres with saturation magnetization of 16.8 emu/g showed distinct superparamagnetic characteristics and the magnetic microspheres with a size of 10 μm were relatively uniform.

关键词： methylmethacrylate superparamagnetic spraying suspension polymerization surface modification preparation characterization

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Cu2O nanoparticles with controlled surface roughness for CO2 electroreduction towards C2+ products

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Chemical engineering Journal 2025年 515卷

作者： Fang, Qi Zhang, Zining Yang, Xue Cheng, Tao Ma, Xinyan Tang, Jing State Key Laboratory of Petroleum Molecular & Process Engineering Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University Shanghai200062 China Sinopec Research Institute of Petroleum Processing Co. LTD. Beijing100083 China Institute of Eco-Chongming Shanghai202162 China

Electrocatalytic CO2 reduction to produce multi-carbon (C2+) products represents a promising avenue for carbon recycling and CO2 conversion industrialization. However, improving C2+ selectivity remains challenging due to uncontrollable reaction pathways. Adjusting the surface properties of the catalyst can effectively influence the nature of the active sites and the branching of the reaction pathways. Herein, we successfully synthesized of Cu2O catalysts with different roughness by adjusting the amount of surfactant, a structure-directing agent. The optimal catalyst indicated a remarkable FEC2+ of 84.2 % at −1.4 V vs. RHE, with an ethylene selectivity of 56.3 % and C2+ partial current density of 416.4 mA/cm2 in a flow cell. In-situ spectroscopy characterization and COMSOL simulations revealed that *CO intermediates tend to desorb from the rough surface, which accelerates the reduction of active sites Cu+ and leads to CO formation. In contrast, flat catalyst surfaces facilitate the carbon intermediate adsorption, thereby stabilizing Cu+ and promoting C-C coupling, ultimately enhancing C2+ production. This work not only refines the structure–activity relationship between catalyst surface roughness and products selectivity, but also offers strategies for designing efficient catalysts from the perspective of surface properties. © 2025

关键词： Surface roughness

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Developing deep learning-based large-scale organic reaction classification model via sigma-profiles

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Green Chemical engineering 2025年第2期 181-192页

作者： Wenlong Wang Chenyang Xu Jian Du Lei Zhang State Key Laboratory of Fine Chemical Frontiers Science Center for Smart Materials Oriented Chemical EngineeringInstitute of Chemical Process Systems EngineeringSchool of Chemical EngineeringDalian University of Technology Department of Chemical and Biomolecular Engineering National University of Singapore

Advanced technologies like deep learning have accelerated the discovery of novel chemical reactions, especially in the field of organic synthesis. With hundreds of thousands of reactions available for reference, one way to effectively leverage them is by classifying chemical reactions into different clusters based on their specific characteristics, which makes target-guided navigation in the vast chemical space possible. Although previous attempts that apply deep learning to reaction classification tasks have made substantial progress, developing a model with good interpretability as well as high accuracy for large-scale reaction classification tasks remains an open question. In this work, a deep learning-based model for a large-scale reaction classification task is first constructed by utilizing pre-trained BERT and autoencoder. Then, the model is trained under the open-source dataset USPTO＿TPL which contains recorded reactions of up to 1000 different types. The multi-classification accuracy of the model on the testing dataset is 99.382%, showing its great potential for practical use. Besides,a reaction similarity map is presented to correlate the reactions in the USPTO＿TPL dataset based on their sigmaprofile-based statistical features. Finally, representative reactions from the testing dataset are provided to illustrate the model's effectiveness on the reaction classification task.

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Photobiomodulation Ameliorates Neuronal Damage in an Amyloid-Beta Induced Rat Model

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IEEE Journal of Selected Topics in Quantum Electronics 2025年第4期31卷

作者： Li, Na Liu, Na Ye, Yutong Shi, Haoxin Shi, Jia Luo, Guoshuai Guo, Jun Liu, Yi Chen, Hongli Chinese Academy of Medical Sciences State Key Laboratory of Advanced Medical Materials and Devices Peking Union Medical College Tianjin Key Laboratory of Neuromodulation and Neurorepair Integrative Regeneration Laboratory Institute of Biomedical Engineering Tianjin300192 China Tiangong University School of Life Sciences Tianjin300387 China Cangzhou Institute of Tiangong University Cangzhou061000 China Tiangong University State Key Laboratory of Separation Membrane and Membrane Process Tianjin Key Laboratory of Optoelectronic Detection Technology and Systems Tianjin300387 China Mental Health Center of Tianjin Medical University Institute of Mental Health Tianjin Anding Hospital Tianjin300222 China

Photobiomodulation (PBM), as a novel noninvasive therapy, has been extensively employed in neurodegenerative disorder research. However, its mechanism of action in Alzheimer's disease (AD) management remains unclear. In this study, a rat model of AD was constructed by administering amyloid-beta (Aβ) intracerebrally, and the influence of 808 nm phototherapy-mediated PBM on AD was explored. The findings indicated that PBM performed a neuroprotective function by reducing neuronal damage in AD and ameliorating cognitive function, mediated by the suppression of Aβ induced neuroinflammation and neuronal apoptosis. This investigation underscores the critical role of PBM in ameliorating Aβ-induced neuronal damage. It provides a theoretical basis for the advancement of near-infrared light application in neurodegenerative disorders. © 1995-2012 IEEE.

关键词： Neurodegenerative diseases

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Enhancing mixing of particles by baffles in a rotating drum mixer

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颗粒学报（英文版） 2011年第3期9卷 270-278页

作者： Maoqiang Jiang Yongzhi Zhao Gesi Liu Jinyang Zheng State Key Laboratory of Chemical Engineering Institute of Chemical Process Equipment Department of Chemical and Biochemical Engineering Zhejiang University Hangzhou 310027China

Baffles with shape of “-” (single baffle), “+” (cross-baffles with four arms) and (baffles with 6 arms)are used to enhance the mixing of particles in a rotating drum mixer. A micro-dynamics study of mixing and segregation of a bi-disperse system of two particle sizes in the rotating drum with these three kinds of baffles is carried out using the discrete element method (DEM). The effect of the baffles on mixing, and the mechanisms of mixing enhancement by the baffles are discussed and analyzed. Simulation results show that in an unbaffled drum mixer, particle convection, particle diffusion, and size segregation of bidisperse particles, all play important roles in the mixing process; whereas size segregation will be largely restrained when the drum mixer has a baffle, regardless of its shape, and the degree of mixing is higher than that in an unbaffled drum mixer. The different mixing characteristics for “-” shaped baffle, “+” baffle,and baffle are revealed by the simulation results. For “+” or “*” style baffles, there is an optimal size of baffles for the mixing of particles, and the optimal mixing efficiency is higher than that for “-” baffle.

关键词： Particle mixing Size segregation Baffle Drum mixer Discrete element method (DEM)

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Helicobacter pylori-Induced Angiopoietin-Like 4 Promotes Gastric Bacterial Colonization and Gastritis

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Research 2025年第1期2024卷 718-738页

作者： Rui Xie Nan You Wan-Yan Chen Peng Zhu Pan Wang Yi-Pin Lv Geng-Yu Yue Xiao-Lin Xu Jiang-Bo Wu Jing-Yu Xu Si-Xu Liu Mu-Han Lü Sheng-Qian Yang Ping Cheng Fang-Yuan Mao Yong-Sheng Teng Liu-Sheng Peng Jin-Yu Zhang Ya-Ling Liao Shi-Ming Yang Yong-Liang Zhao Weisan Chen Quan-Ming Zou Yuan Zhuang Department ofEndoscopy and Digestive System Guizhou Provincial People's HospitalGuiyangChina Department of Hepatobiliary Surgery XinQiao HospitalThird Military Medical UniversityChongqingChina National Engineering Research Center of Immunological Products Department of Microbiology and Biochemical PharmacyCollege of Pharmacy and Laboratory MedicineThird Military Medical UniversityChongqingChina Department of Gastroenterology Suining First People's HospitalSuiningSichuanChina Department of Infection The General Hospital of Western Theater CommandChengduSichuanChina Department of Gastroenterology Affiliated Hospital of Southwest Medical UniversityLuzhouSichuanChina Chongqing Engineering Research Center for Pharmacodynamics Evaluation Department of PharmaceuticsCollege of Pharmacy and Laboratory MedicineThird Military Medical UniversityChongqingChina Department of Gastroenterology XinQiao HospitalThird Military Medical UniversityChongqingChina Department of General Surgery and Center of Minimal Invasive Gastrointestinal Surgery Southwest HospitalThird Military Medical UniversityChongqingChina La Trobe Institute of Molecular Science La Trobe UniversityBundooraVictoria 3085Australia State Key Laboratory of Trauma and Chemical Poisoning ChongqingChina

Helicobacter pylori infection is characterized as progressive processes of bacterial persistence and chronic gastritis with features of infiltration of mononuclear cells more than granulocytes in gastric ***-like 4(ANGPTL4)is considered a double-edged sword in inflammation-associated diseases,but its function and clinical relevance in ***-associated pathology are ***,we demonstrate both pro-colonization and pro-inflammation roles of ANGPTL4 in *** *** ANGPTL4 in the infected gastric mucosa was produced from gastric epithelial cells(GECs)synergistically induced by *** and IL-17A in a cagA-dependent *** gastric ANGPTL4 correlated with *** colonization and the severity of gastritis,and mouse ANGPTL4 from non-bone marrow-derived cells promoted bacteria colonization and ***,*** colonization and inflammation were attenuated in Il17a-/-,Angptl4-/-,and Il17a-/-Angptl4-/-***,ANGPTL4 bound to integrinαV(ITGAV)on GECs to suppress CXCL1 production by inhibiting ERK,leading to decreased gastric influx of neutrophils,thereby promoting *** colonization;ANGPTL4 also bound to ITGAV on monocytes to promote CCL5 production by activating PI3K-AKT-NF-κB,resulting in increased gastric influx of regulatory CD4+T cells(Tregs)via CCL5-CCR4-dependent *** turn,ANGPTL4 induced Treg proliferation by binding to ITGAV to activate PI3K-AKT-NF-κB,promoting ***-associated ***,we propose a model in which ANGPTL4 collectively ensures *** persistence and promotes *** to inhibit ANGPTL4-associated pathway may prove valuable strategies in treating *** infection.

关键词： gastric mucosaangiopoietin helicobacter pylori angiopoietin infiltration mononuclear cells more colonization bacterial persistence chronic gastritis helicobacter pylori infection

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Desulfurization metabolite of Rhodococcus erythropolis LSSE8-1 and its related desulfurizational gene fragments

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Chinese Science Bulletin 2003年第24期48卷 2703-2709页

作者： GOU Zhongxuan, LUO Mingfang, LI Xin, XING Jianmin & LIU Huizhou laboratory of Separation Science and engineering, state key laboratory of biochemical engineering, institute of process engineering, Chinese Academy of Sciences, Beijing 100080, China Correspondence should be addressed to Liu Huizhou (e-mail: hzliu@ ***) Laboratory of Separation Science and Engineering State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing

Rhodococcus erythropolis LSSE8-1 is a newly isolated biodesulfurizaion strain from the soil of Chishui gas field, Guizhou Province, China. The analysis of its metabo-lism product shows that the strain is a kind of biocatalyst able to oxidize dibenzothiophene (DBT) to 2-hydroxydi- phenyl (HBP), and therefore the sulfur in DBT is selectively removed. By using DBTO2 (dibenzothiophene 5,5-dioxide) as substrate, both DBT and HBP are found in the culture, which shows that the reaction from DBT to DBTO2 is re-versible in the cell. While using 0.5 mmol/L DBT as control, 0.01—0.4 mmol/L DBTO2 shows poisonous effect to the cell, which will explain why there is no DBTO2 accumulation in the process of biodesulfurization. After treatment by lysozme, the plasmid DNA of the strain is isolated by alkaline method to be used as the template of PCR reaction. Three dsz gene fragments of 1.3, 1.0 and 1.2 kb respectively were amplified. Each fragment is ligate with PGEM-T vector, and cloned into E. coli. DH5. The clone DNA is sequenced and the result shows that dsz related genes are highly conservative. The identities of dszA and dszB with respect to IGTS8 are 100%, and the identity of dszC with that of IGTS8 is 99%.

关键词：天然气田贵州二苯并噻吩 DBT 硫 DNA 大气污染污染治理

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