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Thin Film Composite Reverse Osmosis Membranes with Metal-Organic Coordination Complexes Stabilized Cnts Interlayer for Enhanced Removal of Trace Organic Contaminants

SSRN

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SSRN 2023年

作者： Liu, Lin Mei, Ying Lin, Xiaocheng Li, Weiyi Liu, Xin Fan, Fuqiang Yang, Yi Research and Development Center for Watershed Environmental Eco-Engineering Advanced Institute of Natural Sciences Beijing Normal University Zhuhai Campus Zhuhai519087 China State Key Laboratory of Water Environment Simulation School of Environment Beijing Normal University Beijing100875 China College of Chemical Engineering Fuzhou University Fujian Fuzhou350116 China School of Environmental Science and Engineering Southern University of Science and Technology Shenzhen518005 China Center for Water Research Advanced Institute of Natural Sciences Beijing Normal University Zhuhai519087 China College of Education for the Future Faculty of Arts and Sciences Beijing Normal University Zhuhai519087 China

Reverse osmosis (RO) has been recognized as a reliable technique for wastewater reclamation. To enhance its rejection of trace organic contaminants (TrOCs), a novel strategy was proposed to improve reverse osmosis (RO) membranes by fabricating thin-film nanocomposite membrane (TFNi) with a TA-Fe3+/CNTs interlayer. The TFNi-30 membrane was obtained by optimizing the loading capacity. This optimized membrane gave rise to an enhanced water permeance of 3.2 ± 0.2 L m-2 h-1 bar-1, which was two times higher than that of the control membrane (1.1 ± 0.2 L m-2 h-1 bar-1), while achieving a considerably higher rejection of inorganic salts and trace organic contaminants (TrOCs) thanks to the formation of a denser polyamide rejection layer. In addition, the specific roles of the interlayer structure in determining the separation performance of RO membranes were investigated by tailoring the support-free RO membranes and comparing them with the conventional membranes. This study would provide a peer reference for designing high performance RO membranes for wastewater reclamation via the TFNi strategy. © 2023, The Authors. All rights reserved.

关键词： Reverse osmosis

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High-performance descriptor for magnetic materials: Accurate discrimination of magnetic structure

arXiv

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arXiv 2023年

作者： Suzuki, Michi-To Nomoto, Takuya Morooka, Eiaki V. Yanagi, Yuki Kusunose, Hiroaki Center for Computational Materials Science Institute for Materials Research Tohoku University Miyagi Sendai980-8577 Japan Center for Spintronics Research Network Graduate School of Engineering Science Osaka University Toyonaka Osaka560-8531 Japan Research Center for Advanced Science and Technology University of Tokyo Komaba Meguro-ku Tokyo153-8904 Japan Department of Applied Physics Aalto University P.O. Box 11100 Aalto Espoo00076 Finland Liberal Arts and Sciences Toyama Prefectural University Toyama Imizu939-0398 Japan Department of Physics Meiji University Kawasaki214-8571 Japan

The magnetic structure is crucial in determining the physical properties inherent in magnetic compounds. We present an adequate descriptor for magnetic structure with proper magnetic symmetry and high discrimination performance, which does not depend on artificial choices for coordinate origin, axis, and magnetic unit cell in crystal. We extend the formalism called "smooth overlap of atomic positions" (SOAP), providing a numerical representation of atomic configurations to that of magnetic moment configurations. We introduce the descriptor in terms of the vector spherical harmonics to describe a magnetic moment configuration and partial spectra from the expansion coefficients. We discuss that the lowest-order partial spectrum is insufficient to discriminate the magnetic structures with different magnetic anisotropy, and a higher-order partial spectrum is required in general to differentiate detailed magnetic structures on the same atomic configuration. We then introduce the fourth-order partial spectrum and evaluate the discrimination performance for different magnetic structures, mainly focusing on the difference in magnetic symmetry. The modified partial spectra that are defined not to reflect the difference of magnetic anisotropy are also useful in evaluating magnetic structures obtained from the first-principles calculations performed without spin-orbit coupling. We apply the present method to the symmetry-classified magnetic structures for the crystals of Mn3Ir and Mn3Sn, which are known to exhibit anomalous transport under the antiferromagnetic order, and examine the discrimination performance of the descriptor for different magnetic structures on the same crystal. Copyright © 2023, The Authors. All rights reserved.

关键词： Manganese alloys

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A dulcimer keys positioning method based on improved Roberts operator

A dulcimer keys positioning method based on improved Roberts...

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2021 China Automation Congress, CAC 2021

作者： Tang, De Zhang, Ziying Chen, Xin Xiao, Zhe Qin, Mengxi School of Automation China University of Geosciences Wuhan430074 China Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems China University of Geosciences Wuhan430074 China Engineering Research Center of Intelligent Technology for Geo-Exploration Ministry of Education China University of Geosciences Wuhan430074 China School of Arts and Communication China University of Geosciences Wuhan430074 China

ISBN: (纸本)9781665426473

It is important for the dulcimer robot to obtain the spatial coordinates of the dulcimer phonemes. However, the traditional manual positioning method is both inefficient and does not meet the intelligence requirements of modern robot. A visual positioning method based on improved Roberts operator is proposed in this paper on account of solving these problems, which can obtain the 3D coordinates of the dulcimer keys in a short time. First, an improved Roberts edge detection operator is designed, which fully detects the edge information of the target by transforming the scale. Further, this paper proposes a dulcimer keys positioning method by fusing RGB and depth image information. This method has a better positioning effect for dulcimer keys with complex background and small size. The experimental results show that the visual positioning method proposed in this paper can effectively identify and locate the dulcimer keys, and it has better robustness to the lighting environment. © 2021 IEEE

关键词： Binocular vision

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Equation of State and Electrical Transport Properties of Li2MnO3 at High Pressure

SSRN

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SSRN 2022年

作者： Xiong, Lun Liu, Dujin Li, Bin Wang, Yiyan Chen, Guangping Dong, Hongliang Zhang, Ziyou School of Intelligent Manufacturing Sichuan University of Arts and Science Dazhou635000 China Dazhou Basalt Fiber Industrial Research Institute Dazhou635000 China Industrial Technology Institute of School Intelligent Manufacturing Sichuan University of Arts and Science Dazhou635000 China Center for High Pressure Science and Technology Advanced Research Pudong Shanghai201203 China State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai201899 China

At room temperature, the equation of state (EOS) of Li2MnO3 has been studied by synchrotron radiation X-ray diffraction (XRD) in a diamond anvil cell (DAC). The results showed that the hexagonal structure is stable to the maximum pressure of 28 GPa. The bulk modulus derived from XRD data is K0=106.2(4.2) GPa with K0'=16.92(1.28). In addition, we have studied the high-pressure electrical conductivity of Li2MnO3 in a DAC to 20.6 GPa. It is found that the resistance decreases with the increase of pressure and changes continuously with a exponential function. © 2022, The Authors. All rights reserved.

关键词： Lithium compounds

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Mental Health Literacy of University Students in Vietnam and Cambodia

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International Journal of Mental Health Promotion 2022年第3期24卷 439-456页

作者： Anja Dessauvagie Hoang-Minh Dang Tuyet Truong Thu Nguyen Bich Hong Nguyen Huong Cao Socheata Kim Gunter Groen Hamburg University of Applied Sciences Department of Social WorkHamburgGermany VNU University of Education Center for ResearchInformation and Service in Psychology(CRISP)HanoiVietnam Thai Nguyen University of Agriculture and Forestry Advanced Education Programs OfficeThai Nguyen CityVietnam VNU-HCM University of Social Sciences and Humanities Faculty of EducationHo Chi Minh CityVietnam Thai Nguyen University of Economics and Business Administration Faculty of EconomicsThai Nguyen CityVietnam Vinh University of Technology Education Department of Scientific Management and International PartnershipsVinh CityVietnam Paragon International University Department of Business AdministrationPhnom PenhCambodia

Mental health literacy(MHL)refers to knowledge and attitudes that shape the recognition,management,and prevention of mental *** the topic has been exhaustively researched in Western countries,research from Southeast Asia still is *** studies in this field showed a moderate recognition of mental disorders,a high prevalence of stigmatizing attitudes and a low willingness to seek professional help among Southeastern-Asian *** study explored the level of MHL among university students from different parts of Vietnam and *** with influencing factors(gender,age,study year,educational attainment of the parents,urban/rural origin,ethnicity,personal experiences with mental disorders)were also *** online survey,using a 30-item Vietnamese version of the Mental Health Literacy Scale(MHLS),was conducted at six university sites in Vietnam and *** of 1032 students from different study branches were *** MHL of Vietnamese and Cambodian university students was lower,compared to samples from Australia or the *** and students with a personal experience of mental disorders(self or family)showed a significantly higher *** differences in MHL were found between students from different socioeconomic backgrounds(professional attainment of parents,urban/rural origin).Findings on the influence of ethnicity were *** needs to be improved among the university students of Vietnam and *** health promotion should specifically target male students,students from STEM branches,and international students.

关键词： Help-seeking mental disorders mental health literacy Southeastern Asia stigma university students

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An effective biodegradable curcumin loaded magnetic microsphere: Applications for drug delivery and cancer treatment

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Pharmacological research - Modern Chinese Medicine 2023年 6卷

作者： Esthar, Selvaraj Rajesh, Jegathalaprathaban Prakash, Natarajan Ayyanaar, Srinivasan Bhaskar, R. Thanigaivel, Sundaram Webster, Thomas J. Rajagopal, Gurusamy PG and Research Department of Chemistry Chikkanna Government Arts College Tamilnadu Tirupur 641602 India Department of Chemistry Saveetha School of Engineering Institute of Medical and Technical Science Saveetha University Tamilnadu Chennai 602105 India Department of Chemistry Syed Ammal Arts and Science College Tamilnadu Ramanathapuram 623513 India Department of Chemistry School of Advanced Sciences Vellore Institute of Technology Tamil Nadu Vellore 632014 India Department of Biotechnology Faculty of Science & Humanities SRM Institute of Science and Technology Tamil Nadu Kattankulathur 603203 India UFPI -Universidade Federal do Piauí Brazil and Hebei University of Technology Tianjin China

Introduction: The non-specific delivery of drugs to tissues is one of the major problems in traditional chemotherapy that creates problems, importantly cytotoxicity to healthy cells. A drug carrier can be designed and synthesized using a variety of techniques that allow the drug to be delivered to a specific target site with sustained release. Here, we designed novel polymer-encapsulated magnetic microspheres as drug carriers that enable site-specific and controlled drug delivery to improve therapeutic outcomes. In our study, we developed a novel emulsion-based technique to produce curcumin-loaded polymer-encapsulated magnetic microspheres. Methods: The method involves the preparation of a binary emulsion system (water-in-oil-in-water (W1-O-W2) followed by evaporation of the continuous aqueous phase to produce magnetic polylactic acid (PLA) microspheres containing curcumin (CUR) and ferrite magnetic nanoparticles (FA-MMS). The construction of the prepared Ferrite@FA-CUR-PLA-MMS drug carrier was characterized using various spectroscopic and microscopic techniques. Results: The prepared Ferrite@FA-CUR-PLA-MMS drug displayed a unique and constant pH-dependent curcumin release from the drug carriers. The cytotoxicity determination of the Ferrite@FA-CUR-PLA-MMS drug by MTT assays confirmed a low cytotoxic effect on A549 and Hela cancer cells with a minimum inhibitory concentration (IC₅₀) for A549 cells at 15 µg/ml for 24 h and for Hela cells, the IC₅₀ value was 12 µg/ml. After 24 h, the IC₅₀ values for A549 and Hela cancer cells were found to be 10.2 µg/ml and 8.8 µg/ml, respectively. After 10 days of incubation, the drug exhibited total destruction of the A549 and Hela cancer cells. Discussion: Our findings have greater implications for the potential use of magnetic nanoparticles in cancer chemotherapy. Further investigations on the application of this drug delivery system could be extended to the site-specific and controlled delivery of

关键词： Anticancer Biodegradable Curcumin Drug Delivery Ferrite Microspheres

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Discussions on Sobolev type Neutral Nonlocal fractional differential equation

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Partial Differential Equations in Applied Mathematics 2025年 13卷

作者： Kaliraj, K. Manjula, M. Thilakraj, E. Ravichandran, C. Nisar, Kottakkaran Sooppy El-Ebiary, Yousef A. Baker Hourani, Ahmad O. Ramanujan Institute for Advanced Study in Mathematics University of Madras Chennai 600 005 India Guru Nanak College (AUTONOMOUS) Chennai 600 042 India Department of Mathematics Kongunadu Arts and Science College Coimbatore 641 029 India Department of Mathematics College of Science and Humanities in Alkharj Prince Sattam Bin Abdulaziz University Alkharj 11942 Saudi Arabia Faculty of Informatics and Computing University Sultan Zainal Abidin (UniSZA) Malaysia Hourani Center for Applied Scientific Research Al-Ahliyya Amman University Amman Jordan

The current study establishes neutral fractional differential equation (NFDE) of Sobolev with finite delay. The probability density function (PDF) and Fixed Point Technique (FPT) are used to demonstrate the existence of the equation with nonlocal circumstances. The fractional theory is used to illustrate the convergence. We then use approximation techniques to arrive at a unique result. We also provide an application for analyzing theoretical results. © 2024

关键词： Fixed point techniques Fractional calculus Sobolev type

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Recent advances of covalent organic frameworks-based photocatalysts:Principles,designs,and applications

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Chinese Journal of Catalysis 2025年第3期70卷 142-206页

作者： Hongjun Dong Chunhong Qu Chunmei Li Bo Hu Xin Li Guijie Liang Jizhou Jiang Advanced Chemical Engineering Laboratory of Green Materials and Energy of Jiangsu Province Institute of Green Chemistry and Chemical TechnologySchool of Chemistry and Chemical EngineeringJiangsu UniversityZhenjiang 212013JiangsuChina Baicheng Normal University Baicheng 137000JilinChina Institute of Biomass Engineering Key Laboratory of Energy Plants Resource and Utilization of Ministry of Agriculture and Rural AffairsKey Laboratory for Biobased Materials and Energy of Ministry of EducationCollege of Materials and EnergySouth China Agricultural UniversityGuangzhou 510642GuangdongChina School of Environmental Ecology and Biological Engineering Key Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationWuhan Institute of TechnologyWuhan 430205HubeiChina Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices Hubei University of Arts and ScienceXiangyang 441053HubeiChina

Covalent organic frameworks(COFs)semiconductor materials have garnered significant attention in solar to chemical energy conversion owing to their unique properties,including structural tunability,pre-design capability,large surface area,abundant pore structures,high crystallinity,excellent chemical stability,suitable energy-band structure,fast charge carrier transfer and so *** intrinsic features endow COFs with the remarkable candidates for various photocatalytic applications including photocatalytic H_(2) generation from water reduction,CO_(2) reduction,degradation of organic pollutants,N_(2) fixation,H_(2)O_(2) evolution,and even organic ***,this review comprehensively summarizes the recent advancements in COF-based materials for the above photocatalytic reactions,including the historic overview of the COF in the photocatalysis field,the fundamentals and design philosophy of COF-based photocatalysts,the advances of synthesis strategies,the structural characteristics and diversities,the practical applications in various photocatalytic fields as well as the challenges and future development direction in terms of COFs material and application *** sincerely hope this review can offer symbolic guidelines for future development COF semiconductor materials in this promising field.

关键词： Covalent organic framework Photocatalysis Structural feature Energy conversion Environmental purification

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De-scattering with excitation patterning (DEEP) in temporal focusing microscopy

De-scattering with excitation patterning (DEEP) in temporal ...

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Bio-Optics: Design and Application, BODA 2021 - Part of Biophotonics Congress: Optics in the Life Sciences 2021

作者： Zheng, Cheng Park, Jong Kang Yildirim, Murat Boivin, Josiah R. Xue, Yi Sur, Mriganka So, Peter T.C. Wadduwage, Dushan N. Dept. of Mechanical Engineering Massachusetts Institute of Technology 77 Massachusetts Ave. CambridgeMA02139 United States Dept. of Biological Engineering Massachusetts Institute of Technology 77 Massachusetts Ave. CambridgeMA02139 United States Laser Biomedical Research Center Massachusetts Institute of Technology 77 Massachusetts Ave. CambridgeMA02139 United States Picower Institute for Learning and Memory Massachusetts Institute of Technology 77 Massachusetts Ave. CambridgeMA02139 United States Center for Advanced Imaging Faculty of Arts and Sciences Harvard University CambridgeMA02138 United States

The scattering in turbid samples severely degrades image quality of temporal focusing microscopy. To address this challenge, we introduce a novel technique called De-scattering with Excitation Patterning, which uses p...

ISBN: (纸本)9781557528209

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Macau's Vocabulary Growth in the Recent Ten Year 20

Macau's Vocabulary Growth in the Recent Ten Year

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20th Chinese National Conference on Computational Linguistics, CCL 2021

作者： Wang, Shan Chen, Zhao Zhang, Haodi Faculty of Arts and Humanities University of Macau China Zhuhai UM Science and Technology Research Institute Zhuhai519000 China School of Computer and Software Shenzhen University Shenzhen518052 China Shanghai Center for Brain Science and Brain-Inspired Technology Shanghai200031 China

Vocabulary growth models can reflect the diachronic change of vocabulary in a certain field by fitting the quantitative relationship between word types and tokens. As a place of multi-language and multi-cultural integration, Macau's vocabulary use can reflect the focus of society, but there is no research on Macau's diachronic vocabulary growth. This paper constructed a diachronic corpus of Macau Chinese for the first time, used three vocabulary growth models to fit the vocabulary changes in the corpus, and selected the Heaps model with the best effect to further analyze the relationship between vocabulary change and newspaper content. The results reflect that the changing trend of Macau vocabulary is closely related to hot news, Macau's policy guidelines and people's livelihood. This research also uses the out-of-order text after removing the text timing information to verify the effectiveness of the method. This is the first study to investigate the evolution of Macau vocabulary based on a large-scale diachronic corpus, which is of great significance for the in-depth understanding of the development of Macau's language life. © 2021 China National Conference on Computational Linguistics Published under Creative Commons Attribution 4.0 International License

关键词： Corpus Diachronic change Macau Vocabulary growth

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