DOCSLIB.ORG

Study on Regeneration of Spent Activated Carbon by Using a Clean

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Study on Regeneration of Spent Activated Carbon by Using a Clean Green Process Synth 2017; 6: 499–510 Aiyuan Ma, Xuemei Zheng, Chenhui Liu, Jinhui Peng, Shiwei Li, Libo Zhang* and Chao Liu Study on regeneration of spent activated carbon by using a clean technology DOI 10.1515/gps-2016-0110 1 Introduction Received June 22, 2016; accepted November 21, 2016; previously published online March 2, 2017 Activated carbons (AC) have a wide range of applica- Abstract: In this paper, microwave regeneration of spent tions for liquid stream purification [1, 2] and treatment activated carbon saturated with organic compounds was of pollutants present in liquid gaseous effluents [3], investigated. It has been observed from the present exper- and removal of heavy metal ions from water [4] due to iments that the microwave regeneration temperature their excellent adsorbent properties and large surface and time have significant influences on iodine adsorp- areas [5]. However, pollutants are continuously accu- tion value and yield of the regenerated activated carbon mulated on the activated carbon surface during these (RAC). The characteristics of the RAC were examined by treatments. As a result, the adsorption capacity of the Brunauer–Emmett–Teller (BET). The RAC has a greatly activated carbon is progressively reduced until the acti- higher surface area (743.6 ~ 264.1 m2/g), total pore vol- vated carbon lose efficacy finally, and these spent ACs ume (0.54 ~ 0.22 cm3/g), and a relatively smaller average are burnt, dumped, or disposed of in landfills [6, 7]. pore width (28.83 ~ 33.58 nm) compared to the spent cata- However, these hazardous natures not only bring about lyst. The separation mechanism for activated carbon and a series of social problems, such as additional pollu- organic impurities was determined by X-ray photoelectron tion to the environment, but also waste a large amount spectroscopy (XPS) and scanning electron microscopy of reusable resources [8]. Furthermore, the price of AC (SEM) equipped with an energy-dispersive spectrometer keeps on rising. Therefore, how to resolve these prob- (EDS). It was a process in which the organic impurities lems and reuse these reusable resources have become were aggregated from the pore internal migration to the crucial issues in the world. surface at low temperatures, and the organic impuri- A wide variety of regeneration techniques of spent ties were completely decomposed as the temperature ACs have been widely studied, such as thermal regenera- increased to 900°C for 40 min. Simultaneously, a hexago- tion [9, 10], chemical methods [11, 12], electrochemical [13, nal crystal structure material of ZnO was obtained. 14], microbiological regeneration [7], microwave-assisted regeneration [15–17], and so on. Keywords: microwave regeneration; regenerated activated The report of Salvador et al. [5] showed that thermal carbon; spent catalyst. regeneration basically consists of heating the saturated AC to provide the amount of energy necessary to decom- *Corresponding author: Libo Zhang, Yunnan Provincial Key pose the retained adsorbate. However, the time and Laboratory of Intensification Metallurgy, Kunming 650093, Yunnan, energy in consuming thermal regeneration are relatively China; Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming University of Science and Technology, Kunming longer and higher. At the same time, the regeneration 650093, China; and Faculty of Metallurgy and Energy Engineering, time and temperature have an important influence in the Kunming University of Science and Technology, Kunming 650093, activated carbon’s pore structure. Significantly, time and China, e-mail: [email protected] temperature bring more and more significant deteriora- Aiyuan Ma, Xuemei Zheng, Jinhui Peng, Shiwei Li and Chao Liu: tion in the adsorbent’s pore structure, thereby, reducing Yunnan Provincial Key Laboratory of Intensification Metallurgy, the final adsorption capacity and the efficiency of the Kunming 650093, Yunnan, China; Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming University of Science regeneration [18]. and Technology, Kunming 650093, China; and Faculty of Metallurgy Regeneration of the activated carbons generates and Energy Engineering, Kunming University of Science and organic impurities by chemical methods, and these Technology, Kunming 650093, China compounds consume a large number of chemistry rea- Chenhui Liu: Yunnan Provincial Key Laboratory of Intensification gents and dispose of these chemistry reagents, which Metallurgy, Kunming 650093, Yunnan, China; and Key Laboratory of Resource Clean Conversion in Ethnic Regions, Education Department is an important fact. Therefore, chemical regeneration of Yunnan Province, Yunnan Minzu University, Kunming 650500, is of no practical use in disposing the complex com- China pounds from spent catalysts, whereas such methods as 500 A. Ma et al.: Regeneration of spent activated carbon by a clean technology extractive regeneration, electrochemical and microbial Table 1: Components of the spent catalyst (%). processes basically do not have any commercial applica- tion [19]. Chemical element C Zn P Si Ca Al Content (wt%) 82.3 7.98 0.6 0.17 0.021 0.027 As an efficient and clean form of energy, micro- wave regeneration offers possible advantages over con- ventional treatment [20–23] such as selective heating, higher heating rates, and easy automatic control, which C implies that the microwave heating technique can be 1500 performed in a relatively short period of time, saving energy and reducing pollution [24]. The spent activated 1000 carbon in the application of microwave regeneration C technology for regeneration has indicated promising results [22, 25]. 500 The purpose of this paper was to investigate the Intensity (cps) regeneration of the spent catalyst of vinyl acetate syn- 0 C49H66O33 thesis by microwave irradiation. The efficiency of regen- C4H6Zn·2H2O C H O eration was evaluated with iodine adsorption value and 19 22 6 yield. To identify the interaction of microwave energy 10 20 30 40 50 60 70 80 90 and spent catalyst, the dielectric properties and the 2θ (°) temperature-rising characteristics of the spent cata- Figure 1: XRD pattern of the spent catalyst. lyst in the microwave field were studied. The structures and properties of the spent catalyst and the regenerated activated carbon (RAC) were characterized by nitrogen element distribution characteristics in the spent catalyst, X-ray EDS adsorption isotherm, cumulative pore volume distri- line scanning was characterized, as shown in Figure 2B and C. The bution, and pore size distribution. Scanning electron EDS line scanning from A to B shows that the major ingredients of microscopy (SEM)-energy-dispersive spectrometer (EDS) the filler material in the pore are C, O, and Zn, and it seemed that C, O, and Zn formed the C H O Zn·2H O and the other organic impurities and X-ray photoelectron spectroscopy (XPS) were used 4 6 4 2 combined in the XRD analysis. to determine the separation mechanism of the activated carbon and organic impurities. The obtained results are also extremely interesting from an economic point of 2.2 Experimental setup and methods view in saving resources and alleviating environmental pollution. 2.2.1 Test device for dielectric parameters: The dielectric parameter-measuring device scheme is shown in Figure 3. The dielectric parameter tester (Dielectric kit for Vials) is supplied by the German Püschner company. The device consists of a microwave power source, a directional coupler, a microwave receiver, and a 2 Materials and methods cavity resonator. The microwave signal receiver of AD-8320 integrated circuit can detect the signal amplitude and phase. The resonator 2.1 Experimental materials was used to hold in the analyzing cavity. The test control unit was via a USB data cable connected to the computer that calculates the The spent catalyst of vinyl acetate synthesis was obtained from a dielectric parameters. chemical plant in Yunnan province, China, and its composition is presented in Table 1. 2.2.2 Microwave equipment: A 3-kW box-type microwave reactor The X-ray diffraction (XRD, Rigaku Company, Japan) pattern of developed by the Key Laboratory of Unconventional Metallurgy the spent catalyst is displayed in Figure 1, which shows the samples in the Ministry of Education of Kunming University of Science and used in this work, mainly composed of C49H66O33, C4H6O4Zn·2H2O, and Technology was utilized for experimentation. The experimental C19H22O6. device connection diagram is shown in Figure 4. SEM (XL30ESEM-TMP, Philips Company, Holland) equipped The microwave heating frequency is 2450 MHz, while the with an EDS (GENESIS, EDAX Company, USA) was used in analyzing power can be varied from 0 kW to 3 kW, continuously adjustable, the internal morphology and the element distribution of the spent and a thermocouple was used to measure the temperature. A mul- catalyst, shown in Figure 2. The microstructure of the spent catalyst lite crucible, with an inner diameter of 90 mm, height of 120 mm, is shown in Figure 2A. It is also shown that two substances exist in having good wave-transparent and heat shock properties, was the waste zinc acetate-activated carbon catalyst, the carbon material used. The smoke soot absorption system was composed of a suc- and the filler material in pore. To obtain more information on the tion bottle, two water bottles, a surge flask, and an aspirator pump. A. Ma et al.: Regeneration of spent activated carbon by a clean technology 501 A (a) (b) B C 20,000 Figure 3: Dielectric
Load more

Recommended publications
  • Mesoporous Polydopamine Nanoparticles Carrying Peptide RL-QN15 Show Potential for Skin Wound Therapy
    Mesoporous Polydopamine Nanoparticles Carrying Peptide RL-QN15 Show Potential for Skin Wound Therapy Pan Qin Kunming Medical University Yi Meng Kunming Medical University Ying Wang Yunnan Minzu University Xinyu Gou Shaanxi Normal University Naixin Liu Kunming Medical University Saige Yin Kunming Medical University Yan Hu Kunming Medical University Huiling Sun Kunming Medical University Zhe Fu Kunming Medical University Yinlei Wang Kunming Medical University Xiaojie Li Kunming Medical University Jing Tang Kunming Medical University Ying Yang Kunming Medical College Fourth Aliated Hospital Ziwei Deng Shaanxi Normal University Xinwang Yang ( [email protected] ) Kunming Medical University https://orcid.org/0000-0003-3210-8908 Page 1/28 Research Keywords: wound healing, mesoporous polydopamine, RL-QN15, nanoparticles Posted Date: April 28th, 2021 DOI: https://doi.org/10.21203/rs.3.rs-437830/v1 License: This work is licensed under a Creative Commons Attribution 4.0 International License. Read Full License Page 2/28 Abstract Background: Skin wound healing remains a considerable clinical challenge, thus stressing the urgent need for the development of new interventions to promote repair. Recent researches indicate that both peptides and nanoparticles may be potential therapies for the treatment of skin wounds. Methods: In the current study, the mesoporous polydopamine (MPDA) nanoparticles were prepared and the peptide RL-QN15 that was previously identied from amphibian skin secretions and exhibited signicant potential as a novel prohealing agent was successfully loaded onto the MPDA nanoparticles, which was conrmed by results of analysis of scanning electron microscopy and fourier transform infrared spectroscopy. The encapsulation eciency and sustained release rate of RL-QN15 from the nanocomposites were determined.
    [Show full text]
  • FORMATO PDF Ranking Instituciones Acadã©Micas Por Sub Ã
    Ranking Instituciones Académicas por sub área OCDE 2020 1. Cs. Naturales > 1.07 Otras Ciencias Naturales PAÍS INSTITUCIÓN RANKING PUNTAJE USA Harvard University 1 5,000 USA Massachusetts Institute of Technology (MIT) 2 5,000 USA Stanford University 3 5,000 UNITED KINGDOM University of Cambridge 4 5,000 USA Columbia University 5 5,000 USA University of California Berkeley 6 5,000 UNITED KINGDOM University of Oxford 7 5,000 UNITED KINGDOM University College London 8 5,000 USA Yale University 9 5,000 USA University of California Los Angeles 10 5,000 USA Johns Hopkins University 11 5,000 USA University of Washington Seattle 12 5,000 USA University of California San Diego 13 5,000 USA University of Chicago 14 5,000 UNITED KINGDOM Imperial College London 15 5,000 USA University of California San Francisco 16 5,000 USA Northeastern University 17 5,000 USA Cornell University 18 5,000 CHINA Peking University 19 5,000 AUSTRALIA University of Queensland 20 5,000 DENMARK University of Copenhagen 21 5,000 USA Princeton University 22 5,000 JAPAN University of Tokyo 23 5,000 SINGAPORE National University of Singapore 24 5,000 USA University of Pennsylvania 25 5,000 CANADA University of Toronto 26 5,000 FRANCE Universite Paris Saclay 27 5,000 UNITED KINGDOM University of Edinburgh 28 5,000 SWITZERLAND ETH Zurich 29 5,000 USA Duke University 30 5,000 USA Arizona State University 31 5,000 CANADA University of British Columbia 32 5,000 FRANCE Universite de Toulouse 33 5,000 FRANCE Sorbonne Universite 34 5,000 USA Georgia Institute of Technology 35 5,000 USA University of Michigan 36 5,000 USA University of Maryland College Park 37 5,000 FRANCE Universite Toulouse III - Paul Sabatier 38 5,000 UNITED KINGDOM University of Bristol 39 5,000 CANADA McGill University 40 5,000 USA University of California Santa Barbara 41 5,000 GERMANY Ruprecht Karls University Heidelberg 42 5,000 NETHERLANDS Utrecht University 43 5,000 USA New York University 44 5,000 USA University of Minnesota Twin Cities 45 5,000 CHINA Tsinghua University 46 5,000 USA Harvard T.H.
    [Show full text]
  • Preferential Admission Policies for Ethnic Minority Students in Yunnan: Help Or Hindrance
    356 International Journal of Learning, Teaching and Educational Research Vol. 19, No. 4, pp. 356-376, April 2020 https://doi.org/10.26803/ijlter.19.4.21 Preferential Admission Policies for Ethnic Minority Students in Yunnan: Help or Hindrance Dongyuan Deng Suranaree University of Technology, Thailand https://orcid.org/0000-0002-7003-8157 Sirinthorn Seepho Suranaree University of Technology, Thailand https://orcid.org/0000-0002-5048-5435 Andrew Lian Suranaree University of Technology, Thailand https://orcid.org/0000-0002-5812-3017 Abstract. This research project took Yunnan (YN), the most southwestern province of China and a frontier province with the largest number of ethnic minorities along with multi-ethnic languages and abundant ethnic cultures, as a specific case. It studied both the current situation of minority education and the necessity for Preferential Admission Policies (PAPs) in the particular stage of the national college entrance examination (NCEE) from a social perspective. Quantitative statistics was used to analyze data from the different education levels of the minority groups. Document analysis and in-depth interviews with four groups of participants (exclusive ethnic minority university students (EEMs), university teachers, administrators and provincial officials of Yunnan Province) were conducted to explore the rationality and feasibility of PAPs. The findings reveal that PAPs are indeed justified in Yunnan’s multi-ethnic social context, at the same time, geographical remoteness and regional gaps, socioeconomic determinants, and linguistic barriers contributed to the need for PAPs at present under the average level of minority education in Yunnan. Keywords: Yunnan; ethnic minority education; Preferential Admission Policies; entrance examination; social context 1.
    [Show full text]
  • Cathelicidin-OA1, a Novel Antioxidant Peptide Identified from An
    www.nature.com/scientificreports OPEN Cathelicidin-OA1, a novel antioxidant peptide identifed from an amphibian, accelerates skin Received: 9 October 2017 Accepted: 2 January 2018 wound healing Published: xx xx xxxx Xiaoqing Cao1, Ying Wang2, Chunyun Wu3, Xiaojie Li4, Zhe Fu3, Meifeng Yang3, Wenxin Bian3, Siyuan Wang2, Yongli Song3, Jing Tang4 & Xinwang Yang3 Cathelicidins play pivotal roles in host defense. The discovery of novel cathelicidins is important research; however, despite the identifcation of many cathelicidins in vertebrates, few have been reported in amphibians. Here we identifed a novel cathelicidin (named cathelicidin-OA1) from the skin of an amphibian species, Odorrana andersonii. Produced by posttranslational processing of a 198-residue prepropeptide, cathelicidin-OA1 presented an amino acid sequence of ‘IGRDPTWSHLAASCLKCIFDDLPKTHN′ and a molecular mass of 3038.5 Da. Functional analysis showed that, unlike other cathelicidins, cathelicidin-OA1 demonstrated no direct microbe-killing, acute toxicity and hemolytic activity, but did exhibit antioxidant activity. Importantly, cathelicidin-OA1 accelerated wound healing against human keratinocytes (HaCaT) and skin fbroblasts (HSF) in both time- and dose-dependent manners. Notably, cathelicidin-OA1 also showed wound-healing promotion in a mouse model with full-thickness skin wounds, accelerating re-epithelialization and granulation tissue formation by enhancing the recruitment of macrophages to the wound site, inducing HaCaT cell proliferation and HSF cell migration. This is the frst cathelicidin identifed from an amphibian that shows potent wound-healing activity. These results will help in the development of new types of wound-healing agents and in our understanding of the biological functions of cathelicidins. Cathelicidins, which belong to a group of cationic peptides with amphipathic properties, play critical roles in host defense1.
    [Show full text]
  • Luce Initiative on Asian Studies and the Environment
    Luce Initiative on Asian Studies and the Environment Profiles of Grantee Institutions Table of Contents 4 Map of LIASE Grantees Grantee Profiles 6 ASIANetwork 10 Bard College 12 Beloit College 14 Carleton College 16 Centre College 18 The Claremont Colleges 22 Colorado College 24 Dickinson College 26 Earlham College 28 Eckerd College 30 Furman University 32 Hampshire College 34 Illinois College 36 Lawrence University 38 Oberlin College 40 Occidental College 42 St. Olaf College 44 Tri-Colleges Consortium 48 Trinity College 50 University of Puget Sound 52 Vassar College 54 Washington & Jefferson College 56 Whittier College 58 Willamette University 60 Topics of Focus NOTE Faculty designees attending the LIASE Conference in St. Paul, MN are denoted with an asterisk (*) on their respective institutional profile. A complete directory of LIASE websites, including links to individual faculty profiles, can be found at the LIASE Landing Page www.hluce.org/liaseresources.aspx. LIASE Grantees KEY Institution/Consortium, State (Exploration Grant Award Year) 4 2017 LIASE Conference LIASE Grantees LIASE Grantees 2017 LIASE Conference 5 CORE LIASE FACULTY Teodora O. Amoloza Professor of Sociology Illinois Wesleyan University Gary DeCoker Professor Emeritus of Education Ohio Wesleyan University Jack Harris* Professor of Sociology Hobart & William Smith Colleges Eriberto Lozada, Jr. Professor of Anthropology and Environmental Studies Davidson College PRIMARY GEOGRAPHIC SCOPE China: Yunnan Province Indonesia: Semarang PRIMARY ASIAN PARTNERS China: Yunnan University Indonesia: Soegijapranata Catholic University USA: Eckerd College, Warren Wilson College, ASIANetwork United Board for Christian Higher Education in Asia c/o Ohio Wesleyan University Delaware, OH* STRATEGIES & PRACTICES Build institutional linkages between Exploration: Concluded American and Asian colleges and *At the time of the grant, ASIANetwork’s rotating secretariat was based at Illinois Wesleyan universities; Train faculty in service-learning University.
    [Show full text]
  • A Complete Collection of Chinese Institutes and Universities For
    Study in China——All China Universities All China Universities 2019.12 Please download WeChat app and follow our official account (scan QR code below or add WeChat ID: A15810086985), to start your application journey. Study in China——All China Universities Anhui 安徽 【www.studyinanhui.com】 1. Anhui University 安徽大学 http://ahu.admissions.cn 2. University of Science and Technology of China 中国科学技术大学 http://ustc.admissions.cn 3. Hefei University of Technology 合肥工业大学 http://hfut.admissions.cn 4. Anhui University of Technology 安徽工业大学 http://ahut.admissions.cn 5. Anhui University of Science and Technology 安徽理工大学 http://aust.admissions.cn 6. Anhui Engineering University 安徽工程大学 http://ahpu.admissions.cn 7. Anhui Agricultural University 安徽农业大学 http://ahau.admissions.cn 8. Anhui Medical University 安徽医科大学 http://ahmu.admissions.cn 9. Bengbu Medical College 蚌埠医学院 http://bbmc.admissions.cn 10. Wannan Medical College 皖南医学院 http://wnmc.admissions.cn 11. Anhui University of Chinese Medicine 安徽中医药大学 http://ahtcm.admissions.cn 12. Anhui Normal University 安徽师范大学 http://ahnu.admissions.cn 13. Fuyang Normal University 阜阳师范大学 http://fynu.admissions.cn 14. Anqing Teachers College 安庆师范大学 http://aqtc.admissions.cn 15. Huaibei Normal University 淮北师范大学 http://chnu.admissions.cn Please download WeChat app and follow our official account (scan QR code below or add WeChat ID: A15810086985), to start your application journey. Study in China——All China Universities 16. Huangshan University 黄山学院 http://hsu.admissions.cn 17. Western Anhui University 皖西学院 http://wxc.admissions.cn 18. Chuzhou University 滁州学院 http://chzu.admissions.cn 19. Anhui University of Finance & Economics 安徽财经大学 http://aufe.admissions.cn 20. Suzhou University 宿州学院 http://ahszu.admissions.cn 21.
    [Show full text]
  • Depressive Symptoms, Sleep Quality and Diet During the 2019 Novel Coronavirus Epidemic in China: a Survey of Medical Students
    ORIGINAL RESEARCH published: 26 January 2021 doi: 10.3389/fpubh.2020.588578 Depressive Symptoms, Sleep Quality and Diet During the 2019 Novel Coronavirus Epidemic in China: A Survey of Medical Students Jianping Xie 1,2,3†, Xia Li 1†, Haiyun Luo 1†, Liu He 1, Yufan Bai 1, Fuyun Zheng 1, Lanchun Zhang 2, Jiaqing Ma 1, Zhiqiang Niu 1, Yubing Qin 1, Ling Wang 1, Wenjie Ma 1, Haofei Yu 2, Rongping Zhang 2,4* and Ying Guo 1* 1 School of Basic Medical Sciences, Kunming Medical University, Kunming, China, 2 School of Pharmaceutical Science, Department of Zoology & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, China, 3 Department of Technology, Library, Yunnan Minzu University, Kunming, China, 4 School of Chinese Materia Medica and Yunnan Key Laboratory of Southern Medicinal Resources, Yunnan University of Chinese Medicine, Kunming, Edited by: China Wulf Rössler, Charité—Universitätsmedizin The psychological condition of medical students may be influenced by the 2019 novel Berlin, Germany coronavirus (COVID-19) outbreak. This study investigated the prevalence and influencing Reviewed by: Yaoguang Zhou, factors of depressive symptoms, poor sleep quality and poor diet in students at Kunming Second Military Medical Medical University during the early part of the COVID-19 outbreak. A cross-sectional University, China Cyrus S. H. Ho, study was used from a questionnaire survey in February 2020. Of a total of 1,026 study National University Health participants, the prevalence of depressive symptoms, poor sleep quality, and poor diet System, Singapore was, respectively, 22.4, 33.2, and 17.4%. Male students and students with a low degree *Correspondence: of focus on COVID-19 had a high risk of depressive symptoms.
    [Show full text]
  • FORMATO PDF Ranking Instituciones Acadã©Micas Por Sub Ã
    Ranking Instituciones Académicas por sub área OCDE 2020 3. Ciencias Médicas y de la Salud > 3.02 Medicina Clínica PAÍS INSTITUCIÓN RANKING PUNTAJE USA Harvard University 1 5,000 CANADA University of Toronto 2 5,000 USA Johns Hopkins University 3 5,000 USA University of Pennsylvania 4 5,000 USA University of California San Francisco 5 5,000 UNITED KINGDOM University College London 6 5,000 USA Duke University 7 5,000 USA Stanford University 8 5,000 USA University of California Los Angeles 9 5,000 USA University of Washington Seattle 10 5,000 USA Yale University 11 5,000 USA University of Pittsburgh 12 5,000 USA University of Michigan 13 5,000 AUSTRALIA University of Sydney 14 5,000 USA Columbia University 15 5,000 USA Washington University (WUSTL) 16 5,000 USA Emory University 17 5,000 UNITED KINGDOM Imperial College London 18 5,000 USA Northwestern University 19 5,000 USA University of California San Diego 20 5,000 USA Vanderbilt University 21 5,000 GERMANY Ruprecht Karls University Heidelberg 22 5,000 SWEDEN Karolinska Institutet 23 5,000 USA Cornell University 24 5,000 BELGIUM KU Leuven 25 5,000 UNITED KINGDOM University of Oxford 26 5,000 USA Icahn School of Medicine at Mount Sinai 27 5,000 USA University of North Carolina Chapel Hill 28 5,000 FRANCE Sorbonne Universite 29 5,000 UNITED KINGDOM Kings College London 30 5,000 USA Ohio State University 31 5,000 FRANCE Universite Sorbonne Paris Cite-USPC (ComUE) 32 5,000 USA University of Colorado Health Science Center 33 5,000 SOUTH KOREA Seoul National University (SNU) 34 5,000 NETHERLANDS
    [Show full text]
  • University of Leeds Chinese Accepted Institution List 2021
    University of Leeds Chinese accepted Institution List 2021 This list applies to courses in: All Engineering and Computing courses School of Mathematics School of Education School of Politics and International Studies School of Sociology and Social Policy GPA Requirements 2:1 = 75-85% 2:2 = 70-80% Please visit https://courses.leeds.ac.uk to find out which courses require a 2:1 and a 2:2. Please note: This document is to be used as a guide only. Final decisions will be made by the University of Leeds admissions teams.
    [Show full text]
  • Download Article (PDF)
    Advances in Social Science, Education and Humanities Research, volume 119 3rd International Conference on Economics, Social Science, Arts, Education and Management Engineering (ESSAEME 2017) Copyright Protection on Handicrafts of Yunnan Minorities from the Perspective of Industrialization Qingqing Xu1, a 1School of Law, Oxford College, Kunming University of Science and Technology Kunming, Yunnan Province, China Keywords: Handicrafts Of Yunnan Minorities; Folk Literary And Artistic Works; Copyright. Abstract. The development of Yunnan minority cultural industry starts from minority handicrafts. With the process of cultural industrialization, national arts and crafts with physical forms have become an indispensable part in cultural industry. It is of great significance to protect the intellectual property rights, especially the copyrights of minority handicrafts. But many problems lead by the special attributes of minority handicrafts still need to be tackled, such as unclear right subject, undefined scopes of objects, and the insufficient content of copyright. Thus, appropriate modes must be adopted in order to provide feasible copyright protection for handicrafts of Yunnan minorities. Introduction Yunnan minority handicrafts are created based on the unique life styles and thinking methods of national minorities. They use diversified traditional techniques and material carriers like painting, wood carving, clay sculpture, pottery and clothes to convey their national wisdom and ways of life, as well as their believes, aesthetic appeal and spiritual pursuits. Arts and crafts of minorities are important carriers of national cultural heritage. In the private law system, the incentive mechanism of ownership should be established to encourage the transformation from minority arts and crafts to competitive products, in order to expand market shares and inherit traditional handicrafts.
    [Show full text]
  • Campus Practice Base for Burmese Language Major Under The
    Advances in Social Science, Education and Humanities Research, volume 555 Proceedings of the 1st International Conference on Education: Current Issues and Digital Technologies (ICECIDT 2021) Study on the Construction and Reform of Off- campus Practice Base for Burmese Language Major Under the Guidance of Innovation and Entrepreneurship Taking the Construction of Off-campus Practice Bases of Colleges and Universities in Yunnan Province as an Example Lifeng Wang1,* Zhiyuan Ren2 1 Yunnan Normal University, Kunming, Yunnan, China 2 Yunnan Chinese Language and Culture College, Yunnan Normal University, Kunming, Yunnan, China *Corresponding author. Email: [email protected] ABSTRACT Professional practice, an important organic component of higher education, is an important link to improve students' comprehensive quality and cultivate their creative spirit. It lays a solid foundation for students to successfully step into the society, integrate into the society and contribute to the society. It is an important part of the teaching system and curriculum system of innovation and entrepreneurship. Combined with the existing problems in the construction of off-campus practice bases for Burmese language majors under the new situation, this paper analyzes the current situation and difficulties in the construction of off-campus practice bases for Burmese language majors, and discusses the reform ideas, so as to provide reference for the construction of off- campus practice bases for Burmese language majors in colleges and universities. Keywords: Innovation
    [Show full text]
  • CONICYT Ranking Por Disciplina > Sub-Área OECD (Académicas) Comisión Nacional De Investigación 1
    CONICYT Ranking por Disciplina > Sub-área OECD (Académicas) Comisión Nacional de Investigación 1. Ciencias Naturales > 1.3 Ciencias Físicas y Astronomía Científica y Tecnológica PAÍS INSTITUCIÓN RANKING PUNTAJE FRANCE Universite Paris Saclay (ComUE) 1 5,000 USA University of California Berkeley 2 5,000 USA California Institute of Technology 3 5,000 USA Massachusetts Institute of Technology (MIT) 4 5,000 USA Harvard University 5 5,000 USA Stanford University 6 5,000 UNITED KINGDOM University of Cambridge 7 5,000 FRANCE Sorbonne Universite 8 5,000 USA University of Chicago 9 5,000 JAPAN University of Tokyo 10 5,000 UNITED KINGDOM University of Oxford 11 5,000 FRANCE Universite Sorbonne Paris Cite-USPC (ComUE) 12 5,000 FRANCE University of Paris Diderot 13 5,000 FRANCE PSL Research University Paris (ComUE) 14 5,000 USA Princeton University 15 5,000 FRANCE Universite Paris Sud - Paris XI 16 5,000 CHINA Tsinghua University 17 5,000 USA University of Maryland College Park 18 5,000 UNITED KINGDOM University College London 19 5,000 UNITED KINGDOM Imperial College London 20 5,000 FRANCE Communaute Universite Grenoble Alpes 21 5,000 USA University of Michigan 22 5,000 CANADA University of Toronto 23 5,000 FRANCE Universite Grenoble Alpes (UGA) 24 5,000 ITALY Sapienza University Rome 25 5,000 ITALY University of Padua 26 5,000 CHINA Peking University 27 5,000 UNITED KINGDOM University of Edinburgh 28 5,000 USA University of Illinois Urbana-Champaign 29 5,000 USA Columbia University 30 5,000 INDIA Indian Institute of Technology System (IIT System)
    [Show full text]