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| 1 | Recent progress towards mild-condition ammonia synthesis显示文摘Ammonia is essential for food and energy.Industrial ammonia synthesis via Haber–Bosch process is energy-intensive and releases large amount of CO2.Increasing research efforts are devoted to 'green'ammonia synthesis.The present article reviews the recent progress in the fields of thermocatalytic, electrocatalytic, photocatalytic and chemical looping processes for dinitrogen reduction towards ammonia formation and discusses the challenges borne for mild-condition synthesis. | Qianru Wang Jianping Guo Ping Chen | 2019 | Journal of Energy Chemistry2019，28，9： | 13 |
| 2 | C:N:P stoichiometry of perennial herbs’ organs in the alpine steppe of the northern Tibetan Plateau显示文摘The patterns of C:N:P stoichiometry across ecosystems are important in understanding biogeochemical processes. The stoichiometry of nutrients at the leaf and root level have been reported previously, but relationships of other plant organs, such as stems and the reproductive organs, remain unclear. We collected 228 samples of leaves, roots, stems and reproductive organs from 11 common plant species at 25 sites on the Tibetan Plateau to explore the relationships of C:N:P stoichiometry both within and across plant organs. The average C concentrations in the roots, leaves, stems and reproductive organs were 427.32, 410.51, 421.11 and 416.72 mg g-1, respectively. The shoot tissues(leaves, stems and reproductive organs) had significantly higher N and P concentrations than the roots. The N and P concentrations had a significant positive correlation within the same organ. The nutrient concentrations(N and P) and nutrient ratios(C:N, C:P and N:P) were significantly correlated across all pairwise organ combinations. Our data suggest that alpine perennial herbs share similar evolutionary histories and have constrained patterns of covariation for C concentrations, with differential patterns for N and P stoichiometry across organs. Our data also indicate that covarying sets of nutrient traits are consistent across environments and biogeographical regions and demonstrate convergent evolution in plant nutritional characteristics in extreme alpine environments. | MA Xing-xing HONG Jiang-tao WANG Xiao-dan | 2019 | Journal of Mountain Science2019，16，9： | 8 |
| 3 | CFD–DEM–CVD multi-physical field coupling model for simulating particle coating process in spout bed显示文摘Particle coating is a very important step in many industrial production processes as the particle coating layers may fix surfaces with unique advantages. Given the limitation and disadvantages of the existing simulation methods, a coupled CFD–DEM–CVD multi-physical field model for particle-coating simulations has been established taking into account the velocity field, temperature field, concentration field, and deposition model. In this model, gas behavior and chemical reactions are simulated in the CFD frame based on the conservation laws of mass, momentum, and energy. The particle behavior is simulated in the DEM frame based on the gas–solid interphase force model and contact force model. The deposition behavior is simulated in the CVD frame based on the particle movement–adhesion–deposition model. The coupled model can be implemented in Fluent-EDEM software with their user definition function and application programming interface. The particle coating process involving the pyrolysis of acetylene was investigated, and the effect of bed temperature and inlet gas velocity on deposition rate and coating efficiency were investigated based on the proposed model with adjustable deposition coefficients. Both the average deposition layer mass and the average deposition layer thickness were found to be proportional to the elapsed time and increased at the rate of about 1.05 × 10^-2 mg/s and 3.45 × 10^-4 mm/s, respectively, setting the inlet gas velocity to 11 m/s and bed temperature to 1680 K. A higher temperature and larger inlet gas velocity lead to a larger deposition rate, but the coating efficiency decreases because of limits imposed by the chemical reaction. At a bed temperature of 1280 K, the average deposition rate is 7.40 × 10?3 mg/s when the inlet gas velocity is set to 11 m/s, which is about double the deposition rate when the inlet gas velocity is set as 5 m/s. The proposed model can provide some guidance for the operating conditions and parameters design of the spouted bed in actual coating settings and can also be further developed as a basic model of mechanisms to integrate detailed information across multiple scales. | Malin Liu Meng Chen Tianjin Li Yaping Tang Rongzheng Liu Youlin Shao Bing Liu Jiaxing Chang | 2019 | Particuology2019，17，1： | 6 |
| 4 | Petro-chemical wastewater treatment by biological process显示文摘Inthecourseofoilrefining,organicwastewaterwithhighconcentrationofemulsifiedoilandphenolisproduced,sofar,themethodsofphysicoche?.. | Guan, Wei-Sheng Lei, Zi-Xue Zhu, Jun-Huang | 2000 | Journal of Environmental Sciences2000，12，2： | 6 |
| 5 | A fast method to diagnose phase transition from amorphous to microcrystalline silicon显示文摘A series of hydrogenated silicon thin films were prepared by the radio frequency plasma enhanced chemical vapor deposition method (RF-PECVD) with various si-lane concentrations. The influence of silane concentration on structural and elec-trical characteristics of these films was investigated to study the phase transition region from amorphous to microcrystalline phase. At the same time,optical emis-sion spectra (OES) from the plasma during the deposition process were monitored to get information about the plasma properties,Raman spectra were measured to study the structural characteristics of the deposited films. The combinatorial analysis of OES and Raman spectra results demonstrated that the OES can be used as a fast method to diagnose phase transition from amorphous to microcrystalline silicon. At last the physical mechanism,why both OES and Raman can be used to diagnose the phase transition,was analyzed theoretically. | HOU GuoFu1,2,3,XUE JunMing1,2,3,YUAN YuJie1,2,3,SUN Jian1,2,3,ZHAO Ying1,2,3 & GENG XinHua1,2,3 1 Institute of Photoelectronics,Nankai University,Tianjin 300071,China 2 Tianjin Key Laboratory of Photoelectronic Thin Film Devices and Technique,Tianjin 300071,China 3 Key Laboratory of Optoelectronic Information Science and Technology of Ministry of Education of China,Tianjin 300071,China | 2007 | Science China(Physics,Mechanics & Astronomy)2007，50，6： | 4 |
| 6 | 基于局部近邻相似度分析的多模态过程故障检测(英文)显示文摘Traditional data driven fault detection methods assume unimodal distribution of process data so that they often perform not well in chemical process with multiple operating modes. In order to monitor the multimode chemical process effectively, this paper presents a novel fault detection method based on local neighborhood similarity analysis(LNSA). In the proposed method, prior process knowledge is not required and only the multimode normal operation data are used to construct a reference dataset. For online monitoring of process state, LNSA applies moving window technique to obtain a current snapshot data window. Then neighborhood searching technique is used to acquire the corresponding local neighborhood data window from the reference dataset. Similarity analysis between snapshot and neighborhood data windows is performed, which includes the calculation of principal component analysis(PCA) similarity factor and distance similarity factor. The PCA similarity factor is to capture the change of data direction while the distance similarity factor is used for monitoring the shift of data center position. Based on these similarity factors, two monitoring statistics are built for multimode process fault detection. Finally a simulated continuous stirred tank system is used to demonstrate the effectiveness of the proposed method. The simulation results show that LNSA can detect multimode process changes effectively and performs better than traditional fault detection methods. | 邓晓刚 田学民 | 2014 | Chinese Journal of Chemical Engineering2014，22，Z1： | 3 |
| 7 | The multi-scale attribute of transport and reaction systems | 郭慕孙 李静海 | 2001 | Progress in Natural Science:Materials International2001，11，2： | 2 |
| 8 | A Numerical Study of Densification Behavior of Silicon Carbide Matrix Composites in Isothermal Chemical Vapor Infiltration显示文摘We studied the characteristics of two-scale pore structure of preform in the deposition process and the mass transfer of reactant gas in dual-scale pores, and observed the physiochemical phenomenon associated with the reaction. Thereby, we established mathematical models on two scales, respectively, preform and reactor. These models were used for the numerical simulation of the process of ceramic matrix composites densified by isothermal chemical vapor infiltration(ICVI). The models were used to carry out a systematic study on the influence of process conditions and the preform structure on the densification behaviors. The most important findings of our study are that the processing time could be reduced by about 50% without compromising the quality of the material, if the processing temperature is 950-1 000 ℃ for the first 70 hours and then raised to 1 100 ℃. | 关康 WU Jianqing CHENG Laifei | 2018 | Journal of Wuhan University of Technology(Materials Science)2018，33，6： | 2 |
| 9 | Advances in Research of Acanthopanax trifoliatus( L. ) Merr显示文摘Acanthopanax trifoliatus( L.) Merr is a common traditional Chinese herbal medicine in central and southern regions of China. It has high medicinal and edible value and mainly contains flavonoids,polysaccharides,saponins and volatile components. Its active extracts have antioxidant,anti-inflammatory,anti-fatigue,and analgesic effects. From the biological characteristics,effective chemical components,extraction methods,cultivation techniques,pharmacological effects,toxicological activities,and product development status,this paper reviewed in detail the research status of A. trifoliatus in China and abroad,to provide a scientific basis for in-depth research and development,and utilization of A. trifoliatus. | Linxiao GAO Meng GUO Zaibo YANG Jun LIU | 2018 | Medicinal Plant2018，9，5： | 1 |
| 10 | DEVELOPMENT OF THE 2-D COUPLED STRATOSPHERICTROPOSPHERIC DYNAMICAL-RADIATIVE-CHEMICAL MODEL—PART Ⅱ:THE RESULTS AND DISCUSSION OF SENSITIVITY EXPERIMENTS显示文摘By using the 2-D stratospheric-tropospheric dynamic-radiative-chemical coupled model,somesensitivity experiments have been done,which are interactions among ozone,radiation andtemperature,vapor effects,as well as effects of source and sink.The result of temperatureexperiment shows that feedback interaction among ozone,radiation and temperature,mainlyoccurs in the upper and middle stratosphere,the maximum of ozone concentration decrease is 1ppm,the maximum of temperature change is 6 K,and the maximum of total ozone change is 20DU.From the experiment of water vapor,we can see that the area of the middle and high latitudesof the Northern Hemisphere is sensitive to vapor change.When the maximum difference betweenboth surface sources is in the Antarctic,the maximum of ozone change is also there.Because thecharacter of surface varies with latitude,dry deposition is different in different latitudes.Thechange of dry deposition makes ozone in boundary layer quite obvious,especially in both poles.The maximum change of total volume ozone in experiments of vapor,source and sink is more than12 DU. | 刘煜 李维亮 周秀骥 | 1998 | Acta meteorologica Sinica1998，12，3： | 1 |
| 11 | Effects of Chemical Composition and Cooling Process on Structures and Properties of Direct-Quenched Steels显示文摘The microstructures and mechanical properties of a series of direct-quenched steels containing,in weight percent,from 0.05 to 0.20 carbon,0.20 to 0.40 silicon,1.10 to 1.70 manganese and at least one microalloying element of vanadium,niobium,titanium and boron have been investigated.After controlled rolling,these steels were cooled in spray water to 400,300 and 200℃,respectively and then cooled in still air.Comparison of the Charpy V-notch impact toughness of direct-quenched steels without subsequent tempering was made with that of direct-quenched steels tempered at 600℃.It is found that an attractive combination of strength and toughness is achived by means of direct-quenching.There exists two types of microstructures in accordance with carbon equivalent.Lath martensitic microstructure is obtained for C_(eq)>0.4%,granular bainitic microstructures for C_(eq).< 0.35%and mixtures of martensite and bainite for C_(eq),.in the range of 0.35— 0.40%.The effect of interrupted quenching temperature on microstructure is not significant for low C_(eq).steel,but interrupted quenching temperature has a strong effect on microstructure for high C_(eq),.steel. | DONG Han￣① LI Gui Fen￣① GAO Wei￣② and DU Jin Kai￣② | 1995 | Journal of Iron and Steel Research(International)1995，2，1： | 1 |
| 12 | Study on pure silica core optical fibers显示文摘An optimal refractive index profile of pure silica core optical fiber (PSCF) was de- signed, in combination with the characters of the modified chemical vapor deposi- tion (MCVD) process. Techniques of preform fabrication by a new furnace round heating MCVD process and fiber drawing process were reviewed. Difficulties in doping fluorine in silica, widening the depressed-index cladding and maintaining the index of fiber core were discussed. Methods used to overcome these difficulties were given at the same time. Additionally, the optimal refractive index profiles of PSCF were presented. | LI Jian ZHENG Kai CHANG DeYuan WEI Huai NING TiGang FU YongJun MAO XiangQiao YAN FengPing JIAN Wei JIAN ShuiSheng | 2008 | Science China(Technological Sciences)2008，51，1： | 1 |
| 13 | Lagrangian simulation of multi-step and rate-limited chemical reactions in multi-dimensional porous media显示文摘Management of groundwater resources and remediation of groundwater pollution require reliable quantification of contaminant dynamics in natural aquifers, which can involve complex chemical dynamics and challenge traditional modeling approaches. The kinetics of chemical reactions in groundwater are well known to be controlled by medium heterogeneity and reactant mixing, motivating the development of particle-based Lagrangian approaches. Previous Lagrangian solvers have been limited to fundamental bimolecular reactions in typically one-dimensional porous media. In contrast to other existing studies, this study developed a fully Lagrangian framework, which was used to simulate diffusion-controlled, multi-step reactions in one-, two-, and three-dimensional porous media. The interaction radius of a reactant molecule, which controls the probability of reaction, was derived by the agent-based approach for both irreversible and reversible reactions. A flexible particle tracking scheme was then developed to build trajectories for particles undergoing mixing-limited, multi-step reactions. The simulated particle dynamics were checked against the kinetics for diffusion-controlled reactions and thermodynamic wellmixed reactions in one-and two-dimensional domains. Applicability of the novel simulator was further tested by(1) simulating precipitation of calcium carbonate minerals in a two-dimensional medium, and(2) quantifying multi-step chemical reactions observed in the laboratory. The flexibility of the Lagrangian simulator allows further refinement to capture complex transport affecting chemical mixing and hence reactions. | Bing-qing Lu Yong Zhang Hong-guang Sun Chun-miao Zheng | 2018 | Water Science and Engineering2018，11，2： | 0 |
| 14 | Localized molecular vibration induced by coherent lasers显示文摘Bond-selected chemical reaction has been one of the subjects in laser chemistry formany years. Local mode vibration mediated reactiont and laser coherent control of reac-tion channels represent the two active aspects in this field. The former has been experi-mentally investigated via photodissociation and bimolecular reaction of HOD molecules. | 詹明生 黄青 周士康 马兴孝 | 1995 | Chinese Science Bulletin1995，40，8： | 0 |
| 15 | The Application of Air-flow to the Technological Process of Chemical Fiber显示文摘The air-flow’s states and ways acted on the technological process of chemical fiber are summed up, which includes chip drying, spinning quenching as well as airjet texturing (air texturing, tangling texturing and bulked continuous filament (BCF)),and the effect of air-flow on the process and quality of chemical fiber is studied,and the action of mechanics and heat on the bulked continuous filament are calculated. | 崔启亮 陈明 | 1999 | Journal of China Textile University(English Edition)1999，16，3： | 0 |
| 16 | The State of Knowledge on Sustainable Chemical Process Systems显示文摘Sustainable engineering becomes a fast growing field of research and education.It aims at designing and operating systems of various scales such that they can use energy and resources in a sustainablemanner.Needless to say,this is one of the most challenging engineering problem types that needs scientists,researchers,engineers,and practitioners to collaboratively work for solutions. | Yinlun Huang Yu Qian | 2019 | Chinese Journal of Chemical Engineering2019，27，7： | 0 |
| 17 | Distributed Control of Chemical Process Networks显示文摘In this paper,we present a review of the current literature on distributed(or partially decentralized) control of chemical process networks.In particular,we focus on recent developments in distributed model predictive control,in the context of the specific challenges faced in the control of chemical process networks.The paper is concluded with some open problems and some possible future research directions in the area. | Michael J.Tippett Jie Bao | 2015 | International Journal of Automation and computing2015，12，4： | 0 |
| 18 | Special issue on “Green chemical process and intensification”显示文摘In order to better unite and lead young chemical engineering scholars,the Chemical Industry and Engineering Society of China will establish Youth Working Committee.At the time of the establishment of Youth Working Committee,we were invited as guest editors to organize the special issue of Frontiers of Chemical Science and Engineering on green chemical process and intensification,aiming to inspire the innovative ideas and build an energetic and academic communication platform for young scholars. | You Han Xiang Ma Lin-Bing Sun Jianhong Xu | 2022 | Frontiers of Chemical Science and Engineering2022，16，11： | 0 |
| 19 | Key nanomaterials for industrial chemical process显示文摘Growing concerns about the increasing global energy consumption and CO_(2)emission have greatly accelerated the development of new nanotechnologies in industrial chemical processes.However,this poses huge scientific and technological challenges,and normally requires novel materials and also novel synthesis strategies for traditional nanomaterials.This topical collection includes some of the latest studies on nanoscience and nanotechnology in chemical processes,such as separation,energy storage,and catalytic reactions(e.g.,hydrogenation,dehydrogenation,hydrogen evolution,selective oxidation,C–C coupling,and C–O bond formation).It includes 4 topics:(i)nanoscience and nanotechnology towards industrial process;(ii)nanomaterials for novel green chemical processes;(iii)novel nanomaterials for traditional processes;and(iv)novel synthesis strategy for nanomaterials. | Xiang Feng Han Hu De Chen | 2023 | Nano Research2023，16，5： | 0 |
| 20 | Multiscale process systems engineering—analysis and design of chemical and energy systems from molecular design up to process optimization显示文摘As indicated by Grossmann and Westerberg[1],a process system can be generally decomposed into hierarchical levels or scales at which different physical and/or chemical phenomena take place(see Fig.1).The first step of multiscale process modeling is to connect the molecular level with the phase level,where the main task is to model and predict the properties of fluid mixtures based on the atomic-or molecular-level information.Typically,quantum chemical(QC)computation,molecular simulation,and equations of state are used to provide such predictions.Recently,due to the ever-increasing number of available data and fast development of cheminformatics and machine learning tools,data-driven descriptor models have been developed and widely used for property predictions[2]. | Teng Zhou Kai Sundmacher | 2022 | Frontiers of Chemical Science and Engineering2022，16，2： | 0 |
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