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Membrane-based air dehumidification:A comparative review on membrane contactors,separative membranes and adsorptive membranes

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Chinese Journal of Chemical Engineering 2022年第1期35卷 121-144页

作者： Huaixun Lim Kunli Goh miao tian Rong Wang Interdisciplinary Graduate School Nanyang Technological UniversitySingapore 637335Singapore Singapore Membrane Technology Centre Nanyang Environmental and Water Research InstituteNanyang Technology UniversitySingapore 637141Singapore School of Ecology and Environment Northwestern Polytechnical University1 Dongxiang RoadChang’an DistrictXi’an 710129China School of Civil and Environmental Engineering Nanyang Technological UniversitySingapore 639798Singapore

This review compares the different types of membrane processes for air *** main categories of membrane-based dehumidification are identified–membrane contactors using porous membranes with concentrated liquid desiccants,separative membranes using dense membrane morphology with a pressure gradient to drive the separation of moisture from air,and adsorptive membranes using nanofibrous membranes which adsorb and capture moisture to realise *** upon the importance of dehumidification and humidity control for urban sustainability and energy efficacy,this review critically analyses and recognizes the three unique categories of membrane-based air dehumidification ***,the discussion is broken into three sections-one for each category-discriminating in terms of the driving force,membrane structure and properties,and its performance *** will notice that despite having the same objective to dehumidify air,the polymers used amongst each category differs to suit the operating requirements and optimize dehumidification *** the end of each section,a performance table or summary of dehumidifying membranes in its class is *** final section concludes with a comparative review of the three categories on membrane-based air dehumidification technologies and draw inspiration from parallel research to rationalise the potential and innovative use of promising materials in membrane fabrication for air dehumidification.

关键词： Membrane dehumidification Membrane contactor H2O/N2 selectivity Permeability Adsorption

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Current Researches and Future Development Trend of Intelligent Robot: A Review

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International Journal of Automation and computing 2018年第5期15卷 525-546页

作者： tian-miao Wang Yong Tao Hui Liu School of Mechanical Engineering and Automation Beihang University Beijing Advanced Innovation Center for Biomedical Engineering Beihang University

With the advancing of industrialization and the advent of the information age, intelligent robots play an increasingly important role in intelligent manufacturing, intelligent transportation system, the Internet of things, medical health and intelligent services. Based on working experiences in and reviews on intelligent robot studies both in China and abroad, the authors summarized researches on key and leading technologies related to human-robot collaboration, driverless technology, emotion recognition, brain-computer interface, bionic software robot and cloud platform, big data network, etc. The development trend of intelligent robot was discussed, and reflections on and suggestions to intelligent robot development in China were proposed. The review is not only meant to overview leading technologies of intelligent robot all over the world, but also provide related theories, methods and technical guidance to the technological and industrial development of intelligent robot in China.

关键词： Intelligent robot human-robot collaboration driverless technology emotion recognition brain-computer interface bigdata network.

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The Early Stage of the Professionalization and Institutionalization of Mathematics in Late Nineteenth-Century China

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Chinese Annals of History of Science and Technology 2018年第1期2卷 1-33页

作者： tian miao Institute for the History of Natural Sciences Chinese Academy of SciencesBeijing 100190China

In the late nineteenth century,stimulated by the demand for modern military technology,mathematics research and education in China developed rapidly,resulting in the emergence of the first generation of professional *** marks the starting point for the professionalization of mathematics in China,a process which this paper sets out to *** author first provides a brief survey of the status of Chinese mathematicians prior to ***,the paper analyzes the social and political context of mathematics,focusing on the improvement of the civil service examination ***,the paper studies the development of mathematics education in the late nineteenth century,leading to the conclusion that mathematics and Chinese mathematicians were professionalized in three major ways:(1)some mathematicians could earn a stable livelihood from their mathematical competence;(2)the social position of mathematicians improved;and(3)the social status of the specialty of mathematics was enhanced.

关键词： professionalization of mathematician mathematics education late nineteenth century

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Self-dual Vortices in Schrdinger-Chern-Simons Model

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Communications in Theoretical Physics 2008年第9期50卷 757-762页

作者： DUAN Yi-Shi tian miao ZHANG Xin-Hui Institute of Theoretical Physics Lanzhou University Lanzhou 730000 China School of Mathematics Physics and Software Engineering Lanzhou Jiaotong University Lanzhou 730070 China

By making use of the U（1） gauge potential decomposition theory and the Ф-mapping topological current theory, we investigate the Schroedinger-Chern-Simons model in the thin-film superconductor system and obtain an exact Bogomolny self-dual equation with a topological term. It is revealed that there exist self-dual vortices in the system. We study the inner topological structure of the self-dual vortices and show that their topological charges are topologically quantized and labeled by Hopf indices and Brouwer degrees. Furthermore, the vortices are found generating or annihilating at the limit points and encountering, splitting or merging at the bifurcation points of the vector field Ф.

关键词： self-dual vortices thin-film superconductors

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Numerical Simulation and Optimization of Staged Combustion and NO_x Release Characteristics in Precalciner

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Journal of Thermal Science 2019年第5期28卷 1024-1034页

作者： WANG Weishu LIAO Yihan LIU Jun HUANG Zhihao tian miao Thermal Engineering Research Centre North China University of Water Resources and Electric Power

In order to study the combustion characteristics in a precalciner, the temperature and composition field in a typical Trinal-sprayed calciner were numerically analysed. The results obtained by simulation were compared to actual measurements and the simulated results were in good agreement with the measured ones. The results indicated that the aerodynamic flow field in the precalciner is satisfactory, and a symmetrical reflux occurs in the shrinkage zone of the precalciner because of air staging, which can increase the residence time of the solid particles. The temperature distribution in the furnace is uniform, and the average temperature is greater than 1200 K, which can satisfy the conditions for the pulverised coal combustion and raw material decomposition. The mass fraction distribution of oxygen, carbon monoxide, and carbon dioxide in the precalciner is closely related to the temperature distribution. The concentration of nitrogen oxides(NO_x) exhibits a trend of increasing, decreasing and then increasing, and finally tending to a stable level. Within a certain velocity range, the average temperature in the precalciner and the decomposition efficiency of the raw material increase as the flue gas velocity increases. When the flue gas velocity is 24 m/s, the overall performance of the precalciner is optimal.

关键词： TTF precalciner staged combustion NOx emission characteristics optimization

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A Review of Point Feature Based Medical Image Registration

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Chinese Journal of Mechanical Engineering 2018年第4期31卷 21-36页

作者： Shao-Ya Guan tian-miao Wang Cai Meng Jun-Chen Wang School of Mechanical Engineering and Automation Beihang University Beijing Advanced Innovation Center for Biomedical Engineering Beihang University School of Astronautics Beihang University

Point features, as the basis of lines, surfaces, and bodies, are commonly used in medical image registration. To obtain an elegant spatial transformation of extracted feature points, many point set matching algorithms(PMs) have been developed to match two point sets by optimizing multifarious distance functions. There are ample reviews related to medical image registration and PMs which summarize their basic principles and main algorithms separately. However,to data, detailed summary of PMs used in medical image registration in different clinical environments has not been published. In this paper, we provide a comprehensive review of the existing key techniques of the PMs applied to medical image registration according to the basic principles and clinical applications. As the core technique of the PMs, geometric transformation models are elaborated in this paper, demonstrating the mechanism of point set registration. We also focus on the clinical applications of the PMs and propose a practical classification method according to their applications in different clinical surgeries. The aim of this paper is to provide a summary of pointfeaturebased methods used in medical image registration and to guide doctors or researchers interested in this field to choose appropriate techniques in their research.

关键词： Medical image registration Point set matching Optimization Assessment Application

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Design of nanofibre interlayer supported forward osmosis composite membranes and its evaluation in fouling study with cleaning

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Frontiers of Environmental Science & Engineering 2022年第9期16卷 77-88页

作者： Tao Ma Haiqing Hui Xiaofei You Zhiqiang Pei miao tian Bing Wu School of Ecology and Environment Northwestern Polytechnical UniversityXi’an 710072China Singapore Membrane Technology Centre Nanyang Environment and Water Research InstituteNanyang Technological UniversitySingapore 637141Singapore Beijing Origin Water Membrane Technology Co. Ltd.Beijing 101407China Faculty of Civil and Environmental Engineering University of IcelandReykjavik IS-107Iceland

Nanofibre-supported forward osmosis(FO)membranes have gained popularity owing to their low structural parameters and high water ***,the nanofibrous membranes are less stable in long-term use,and their fouling behaviours with foulants in both feed solution(FS)and draw solution(DS)is less *** study developed a nanofibrous thin-film composite(TFC)FO membrane by designing a tiered dual-layer nanofibrous substrate to enhance membrane stability during long-term usage and *** characterisation methods were used to study the effect of the electrospun nanofibre interlayer and drying time,which is the interval after removing the M-phenylenediamine(MPD)solution and before reacting with trimesoyl chloride(TMC)solution,on the intrinsic separation FO *** separation performance of the dual-layer nanofibrous FO membranes was examined using model foulants(sodium alginate and bovine serum albumin)in both the FS and *** dual-layer nanofibrous substrate was superior to the single-layer nanofibrous substrate and showed a flux of 30.2 L/m^(2)/h(LMH)when using 1.5 mol/L NaCl against deionised(DI)water in the active layer facing draw solution(AL-DS)*** the fouling test,the water flux was effectively improved without sacrificing the water/solute selectivity under the condition that foulants existed in both the FS and *** addition,the dual-layer nanofibrous TFC FO membrane was more robust during the fouling test and cleaning.

关键词： Forward osmosis Electro-spinning Interfacial polymerisation Fouling Polyvinylidene fluoride

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Relationship between copper content of slag and matte in the SKS copper smelting process

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International Journal of Minerals,Metallurgy and Materials 2019年第3期26卷 301-308页

作者： Qin-meng Wang Song-song Wang miao tian Ding-xuan Tang Qing-hua tian Xue-yi Guo School of Metallurgy and Environment Central South University Hunan Key Laboratory of Nonferrous Metal Resources Recycling School of Mineral Processing and Bioengineering Central South University

In the newly developed oxygen-enriched bottom-blowing copper smelting process(also known as the SKS copper smelting process), Cu loss in slag is one of the most concerning issues. This paper presents our research results concerning the relationship between the Cu content of the matte and slag in the SKS process; the results are based on actual industrial production in the Dongying Fangyuan copper smelter. The results show that the matte grade strongly influences Cu losses in slag. The dissolved and entrained losses account for 10%–20% and 80%–90% of the total SKS industrial Cu losses in slag, respectively. With increasing matte grade, the dissolved and entrained Cu losses in the SKS slag both increase continuously. When the matte grade is greater than 68%, the content of Cu in the smelting slag increases much more dramatically. To obtain a high direct recovery of copper, the matte grade should be less than 75% in industrial SKS copper production.

关键词： copper smelting oxygen-enriched bottom-blowing matte grade Cu loss SKS process

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An InR/mir 9a/NIUbx regulatory cascade regulates wing diphenism in brown planthoppers

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Insect Science 2021年第5期28卷 1300-1313页

作者： Xiang Li Mu-Hua Zhao miao-miao tian Jing Zhao Wan-Lun Cai Hong-Xia Hua Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina

Wing polymorphism significantly contributes to the ecological success of some insect *** example,the brown planthopper(BPH)Nilaparvata lugens,which is one of the most destructive rice pests in Asia,can develop into either highly mobile long-winged or highly fecund short-winged adult morphs.A recent study reported a highly provocative result that the Hox gene UIltrabithorax(Ubx)is expressed in BPH forewings and showed that this wing development gene is differentially expressed in nymphs that develop into long-winged versus short-winged ***,we found that Ubx may be a mir-9a target,and used dual luciferase reporter assays and injected micro RNA(miRNA)mimics and inhibitors to confirm the interactions between mir-9a and *** measured the mir-9a and NIUbx expression profiles in nymphs and found that the expression of these two biomolecules was negatively *** rearing BPH nymphs on host rice plants with different nutritional status,we were able to characterize a regulatory cascade between insulin receptor genes,mir-9a,and NIUbx that regulate wing length in *** host quality was low,NIInRI expression in the nymph terga increased and NIInR2 expression decreased;this led to a higher mir-9a level,which in turn reduced the NIUbx transcript level and ultimately resulted in longer wing *** extending our understanding of the interplay between host plant status and genetic events that modulate polymorphism,we demonstrated both the upstream signal and miRNA-based regulatory mechanism that control Ubx expression in BPH forewings.

关键词： mir-9a Nilaparvata lugens UIltrabithorax wing polymorphism

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Insecticidal activities and chemical components of alcohol extract from leaves of Rhodendron dauricum L.

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Journal of Forestry Research 2011年第1期22卷 133-135页

作者： SUN Mo-long WANG tian-miao College of Science Northeast Forestry University Harbin 150040 P. R.China School of Chemistry and Molecular Engineering East China Universityof Science and Technology Shanghai 200237 P. R. China

The extract from leaves of Rhododendron dauricum L. was extracted with 95% alcohol by common method for studying its insecticidal activities. The chemical components of the alcohol extract and relative contents were analyzed by GC-MS. The insecticidal activities of the alcohol extract were tested on the 2nd？3rd instar larvae of Lymantria dispar L. for five days. Five concentrations of the extract samples were designed as 50, 10, 5, 1, and 0.5 g？L？1. The results show that the alcohol extracts from leaves of R. dauricum exhibited insecticidal activities against larvae of L. dispar. The corrected mortality of larvae of L. dispar for was over 50% for both contact toxicity and stomach toxicity at the extract concentration of ≥ 5 g·L？1 after five days of application. The insecticidal activity in contact toxicity is more effect than stomach toxicity for the alcohol extract. Twenty compounds, with total GC relative contents of 93.81% in the alcohol extract from leaves of R. dauricum were identified. The main chemical components in the extract are：（1） 4,5-Dihydro-5-oxo-3-（p-tolyl） isoxazole, with a relative content of 40.03%; （2） 1,3-Benzenediol, 5-methyl-2-（3,7,11-trimethyl-2,6,10- dodecatrienyl）-, （E,E）-, the relative content 18.27%; （3） 3,6-Diphenyl- 1,2,3,4,5,6,7,8-octahydro-1,8-acridinedione, the relative content 3.89%; （4） 6H-[1,2,4]Triazolo[1,5-a]indole, 4a,5,7,8,8a,9-hexahydro-9- methylene-, the relative content 2.99%; （5） 7-Amino-4-methyl-1,8- naphthyridin-2-ol, the relative content 2.64%; （6） 4-Methyl-2,6- dihydroxyquinoline, the relative content 2.63%; （7） 2,4,6- Triaminoquinazoline, the relative content 2.27%; （8） 2（1H）-Quinolinone, 4-hydroxy-1-methyl-, the relative content 2.02%.

关键词： Rhodendron dauricum L. insecticidal activities component

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