Gotowa bibliografia na temat „Gong lu guan li ju”

Rechargeable post Li-ion batteries based on aluminum (Al) are gaining attention due to high abundance of Al, the high theoretical volumetric capacity, and high safety associated with the low flammability [1,2]. In comparison to Li-ion batteries (LiBs), where the solid-electrolyte interphase (SEI) has been studied for decades, little is known on SEI formation in dependence of the used electrolyte for Al electrodes. In this study, we present the electrochemical performance of Al foils with two different thicknesses (0.025 mm and 0.075 mm), which were used as negative electrode in Al-ion batteries in AlCl3/1-ethyl-3-methylimidazolium chloride [EMIm]Cl electrolyte. Atomic force microscopy (AFM) was used to determine changes in the morphology of Al foils during the charge - discharge process to obtain information on the SEI and its microstructural morphology [3]. Spatially-resolved information on the electrochemical activity of interphase layers on cycled Al foils can be obtained via scanning electrochemical microscopy (SECM), which so far has only be studied at LiBs [4]. First results reveal the correlation between the morphological changes of SEI layer during cycling and its electrochemical behavior depending on the Al foil surface properties, which will be presented and discussed in this contribution. Key words: Al foil, AFM, microstructure, SEI layer, SECM. References: Meng-Chang Lin, Ming Gong, Bingan Lu, Yingpeng Wu, Di-Yan Wang, Mingyun Guan, Michael Angell, Changxin Chen, Jiang Yang, Bing-Joe Hwang and Hongjie Dai, Nature, 520, 325–328 (2015). Li, and N.J. Bjerrum, J. Power Sources, 110, 1–10 (2002). Feng Wu, Na Zhu, Ying Bai, Yaning Gao, and Chuan Wu, Green Energy & Environment 3, 71-77, (2018). Bastian Krueger, Luis Balboa, Jan Frederik Dohmann, Martin Winter, Peter Bieker and Gunther Wittstock. ChemElectroChem,7, 3590–3596, (2020). This work contributes to the research performed at CELEST (Center for Electrochemical Energy Storage Ulm-Karlsruhe) and was funded by the German Research Foundation (DFG) under Project ID 390874152 (POLiS Cluster of Excellence).

В данной работе продемонстрирована возможность применения ИК-микроспектроскопии для многомерной визуализации и анализа интеграции с нативными твердыми тканями зуба человека нового поколения биомиметических материалов, воспроизводящих минералорганический комплекс эмали и дентина.На основе ИК-картирования интенсивности конкретной функциональной молекулярной группы с использованием синхротронного излучения найдены и визуализированы характеристические особенности биомиметического переходного слоя в межфазной области эмаль/стоматологический материал и определено расположение функциональных групп, отвечающих процессам интеграции биомиметического композита REFERENCES Rohr N., Fischer J. Tooth surface treatment strategies for adhesive cementation // The Journal of Advanced Prosthodontics, 2017, v. 9(2), pp. 85–92. https://doi.org/10.4047/jap.2017.9.2.85 Pereira C. N. de B., Daleprane B., Miranda G. L. P. de, Magalhães C. S. de, Moreira A. N. 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To face the upcoming demand on high-power energy storage systems, e.g, for high-dynamic grid-stabilization , stationary devices as used in photovoltaics, and mobile applications led to invention of various battery technologies like sodium-ion batteries (SIB), zinc-ion batteries (ZIB) and high-power lithium-ion batteries (LIBs). Especially the several lithium-ion battery technologies have in common that currently used raw materials like lithium-salts and heavy metals (Ni, Co, Mn) are becoming increasingly scarce and therefore expensive. Without substitution by less-critical materials the ongoing energy system transformation cannot be successfully achieved. One promising system that gained attention in the last few years is the so-called aluminum graphite dual-ion battery (AGDIB). The active electrodes are made of cheap and abundant materials like graphite as cathode material and an aluminum-foil as anode1. During operation chloroaluminate anions from the electrolyte, which is currently based on ionic liquids like 1-ethyl-3-methylimidazoliumchloride ([EMIm]Cl) and AlCl3 in stoichiometric ratios as well as deep-eutectic solvents based on mixtures of urea and AlCl3, are (de)intercalated in the graphitic host-structure while on the anode metallic aluminum is electrochemically deposited and dissolved see equation (1) and (2), respectively2, 3. The overall mechanism is quite comparable with Li-metal batteries, where metallic Li is reversibly dissolved and deposited. The big advantages of AGDIBs are cheap electrode materials (graphite & aluminum), electrolytes based on urea and an extraordinary high-power cell-chemistry. Recent publications showed charging rates up to 20 A g-1 Graphite equal to 9 kW kg-1 Graphite in laboratory-scaled cells. Also, the lifetime of those batteries seems to be non-competitive, cycles up to half a million were reported with negligible capacity fading or degradation effects.4 To develop scalable and more representative battery cells, we established the AGDIB cell chemistry in a new corrosion-stable pouch bag design. Due to the significant increased electrode surface area and overall capacity, hitherto unknown effects were observed which limited the end of lifetime (EOL) of those batteries to less than 8,000 cycles. Herein, we report on a detailed analysis of the cell failure, including several electrochemical in-situ techniques like galvanostatic intermittent titration techniques (GITT), electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV).5 The obtained data will allow a fundamental understanding of the cell operation under low (≤ 1 C-rates) and very high C-rates ≥ 15 C, which is important for establishing a durable AGDIB with high cycling stability. References M.-C. Lin, M. Gong, B. Lu, Y. Wu, D.-Y. Wang, M. Guan, M. Angell, C. Chen, J. Yang, B.-J. Hwang and H. Dai, Nature, 520(7547), 325–328 (2015). M. L. Agiorgousis, Y.-Y. Sun and S. Zhang, ACS Energy Lett., 2(3), 689–693 (2017). M. Angell, G. Zhu, M.‐C. Lin, Y. Rong and H. Dai, Adv. Funct. Mater., 30(4), 1901928 (2020). G. A. Elia, N. A. Kyeremateng, K. Marquardt and R. Hahn, Batteries & Supercaps, 2, 83–90 (2019). M. Safari and C. Delacourt, J. Electrochem. Soc., 158(10), A1123 (2011). Figure 1

Developing grid-scale energy storage is important for the penetration of intermittent renewable energies such as wind and solar, but remains one of the biggest challenges in the field of electrochemical energy storage [1]. The application of mature lithium-ion batteries (LIBs) to grid energy storage is controversial due to the limited Li resources and geographical distribution, high cost of materials (e.g., Co, Li), limited lifetime, and safety concerns [2]. Rechargeable aluminium ion batteries (AIBs), which normally utilises aluminium (Al) metal as anode, are one of the most promising battery technologies for future large-scale energy storage, due to the high theoretical volumetric capacity (8046 mAh cm−3), high safety, and low cost and high abundance of aluminium (the third most abundant metal in the earth crust) [3]. AIBs have achieved long cycle life (>7500 cycles) when using graphite and graphene as cathode materials [4-5]. Nevertheless, the reported graphite-based cathodes have intrinsically low storage capacities (60–200 mAh g-1) due to the intercalation mechanism of the solvated ions rather than the multivalent Al3+ transformation. Extensive efforts have been made to develop new cathode materials to promote the specific/volumetric capacity of AIBs, including transition metal oxides [6], sulfides [7], selenides [8] and others. These AIBs based on non-graphite cathodes usually demonstrate either low discharge voltage, or high initial capacity but significant capacity decay and poor cycle life. To further improve the performance of AIBs, new cathode materials with high storage capacity and long cycle life needs to be developed. In this paper, we report the development of a nanoscale FeF3@expaned graphite (EG) composite as a novel conversion-type cathode material for AIBs [9]. AIB coin cells were assembled using high-purity Al foil as the anode, the ionic liquid [EMIm]Cl/AlCl3 as the electrolyte, and the FeF3@EG composite as cathode. The conversion reaction between the Al3+ ions and FeF3 through transferring three electrons for per Al3+ ion reacted could boost the storage capacity of AIBs. A single-wall carbon nanotube-modified separator was introduced into the system, to significantly restrict the shuttle effect of the intermediate product of FeF3. The assembled AIBs exhibited a satisfactory reversible specific capacity of 266 mAh g-1 at a current density of 60 mA g-1 after 200 cycles, and a good Coulombic efficiency approaching 100% after 400 cycles at a current density of 100 mA g-1 [9]. Ex-situ X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) have been applied to explore the energy storage mechanism of FeF3 in AIBs for the first time [9]. To further overcome the corrosion issue of ionic liquid, a gel polymer electrolyte (GPE) has been successfully synthesised via an innovative method where no solvent or initiator was utilised in the polymerisation process. The application of GPE significantly reduced the corrosivity and enhances the moisture sensitivity of EMIC ionic liquid, as well as improving the reversible ability of the AIBs. The FeF3@EG-based AIB with 0.8g-EMIC-gel electrolyte exhibits a reversible capacity of 204.5 mAh g-1after 1000 cycles at a current density of 100 mA g-1 and stable rate performance for 600 cycles with a Coulombic efficiency of approximately 95%. This work provides unprecedented insight into novel conversion type cathode materials for AIBs. The findings in this work can serve as guidance for the successful design of low cost and high discharge capacity AIBs for large-scale energy storage and are also meaningful for the fundamental understanding of the metal fluorides cathodes for AIBs. References: [1] S. Chu, A. Majumdar, Nature 2012, 488, 294. [2] B. Dunn, H. Kamath, J. M. Tarascon, Science 2011, 334, 928. [3] G. A. Elia, K. V. Kravchyk, M. V. Kovalenko, J. Chacón, A. Holland, R.G.A. Wills, Journal of Power Sources 2021, 481, 228870. [4] M. C. Lin, M. Gong, B. Lu, Y. Wu, D. Y. Wang, M. Guan, M. Angell, C. Chen, J. Yang, B. J. Hwang, H. Dai, Nature 2015, 520, 324. [5] X. Shen, T. Sun, L. Yang, A. Krasnoslobodtsev, R. Sabirianov, M. Sealy, W.-N. Mei, Z. Wu, L. Tan, Nature Communications 2021, 12, 820. [6] X. Huo, X. Wang, Z. Li, J. Liu, J. Li, Nanoscale 2020, 12, 3387. [7] R. Zhuang, G. Miao, Z. Huang, Q. Zhang, J. C. Wu, J. Yang, Journal of Energy Chemistry 2021, 54, 639. [8] Y. Zhang, B. Zhang, J. Li, J. Liu, X. Huo, F. Kang, Chemical Engineering Journal 2021, 403, 126377. [9] J. Zhang, L. Zhang, Y. Zhao, J. Meng, B. Wen, K. M. Muttaqi, Md. R. Islam, Q. Cai, S. Zhang, Advanced Energy Materials 2022, 2200959.

This paper presents some results of rainfall forecast in the monsoon onset period in South Vietnam, with the use of ensemble Kalman filter to assimilate observation data into the initial field of the model. The study of rainfall forecasts are experimented at the time of Southern monsoon outbreaks for 3 years (2005, 2008 and 2009), corresponding to 18 cases. In each case, there are five trials, including satellite wind data assimilation, upper-air sounding data assimilation, mixed data (satellite wind+upper-air sounding data) assimilation and two controlled trials (one single predictive test and one multi-physical ensemble prediction), which is equivalent to 85 forecasts for one trial. Based on the statistical evaluation of 36 samples (18 meteorological stations and 18 trials), the results show that Kalman filter assimilates satellite wind data to forecast well rainfall at 48 hours and 72 hours ranges. With 24 hour forecasting period, upper-air sounding data assimilation and mixed data assimilation experiments predicted better rainfall than non-assimilation tests. The results of the assessment based on the phase prediction indicators also show that the ensemble Kalman filter assimilating satellite wind data and mixed data sets improve the rain forecasting capability of the model at 48 hours and 72 hour ranges, while the upper-air sounding data assimilation test produces satisfactory results at the 72 hour forecast range, and the multi-physical ensemble test predicted good rainfall at 24 hour and 48 hour forecasts. The results of this research initially lead to a new research approach, Kalman Filter Application that assimilates the existing observation data into input data of the model that can improve the quality of rainfall forecast in Southern Vietnam and overall country in general.References Bui Minh Tuan, Nguyen Minh Truong, 2013. 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The pandemic of COVID-19 has afflicted every individual and has initiated a cascade of directly or indirectly involved events in precipitating mental health issues. The human species is a wanderer and hunter-gatherer by nature, and physical social distancing and nationwide lockdown have confined an individual to physical isolation. The present review article was conceived to address psychosocial and other issues and their aetiology related to the current pandemic of COVID-19. The elderly age group has most suffered the wrath of SARS-CoV-2, and social isolation as a preventive measure may further induce mental health issues. Animal model studies have demonstrated an inappropriate interacting endogenous neurotransmitter milieu of dopamine, serotonin, glutamate, and opioids, induced by social isolation that could probably lead to observable phenomena of deviant psychosocial behavior. Conflicting and manipulated information related to COVID-19 on social media has also been recognized as a global threat. Psychological stress during the current pandemic in frontline health care workers, migrant workers, children, and adolescents is also a serious concern. Mental health issues in the current situation could also be induced by being quarantined, uncertainty in business, jobs, economy, hampered academic activities, increased screen time on social media, and domestic violence incidences. The gravity of mental health issues associated with the pandemic of COVID-19 should be identified at the earliest. Mental health organization dedicated to current and future pandemics should be established along with Government policies addressing psychological issues to prevent and treat mental health issues need to be developed. References World Health Organization (WHO) Coronavirus Disease (COVID-19) Dashboard. 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This study uses an in silico screening docking model to evaluate the ACE2 inhibitory activity of natural compounds and drugs. The study collected 49 compounds and evaluated the ACE2 inhibitory effect in silico. The study results show that 11 out of the 49 compounds had stronger inhibitory activity on ACE2 than MLN-4760. Lipinski’s rule of five criteria and predictive pharmacokinetic-toxicity analysis show that eight compounds including quercetin, galangin, quisinostat, fluprofylline, spirofylline, RS 504393, TNP and GNF-5 had drug-likeness. These compounds could be potential drug for the Covid-19 treatment. Keywords SARS-CoV-2S, Covid-19, ACE2, molecular docking, in silico. References [[1] C. Wang, P.W. Horby, F.G. Hayden, G.F. Gao. A novel coronavirus outbreak of global health concern. The Lancet 395(10223) (2020) 470.[2] WHO. WHO Coronavirus Disease (COVID-19) Dashboard. WHO, 2020.[3] N. Chen, M. Zhou, X. Dong, J. Qu, F. Gong, Y. Han, et al. Epidemiological and clinical characteristics of 99 cases of 2019 novel coronavirus pneumonia in Wuhan, China: a descriptive study. The Lancet 395(10223) (2020) 507.[4] J. Yang, Y. Zheng, X. Gou, K. Pu, Z. Chen, Q. Guo, et al. Prevalence of comorbidities and its effects in patients infected with SARS-CoV-2: a systematic review and meta-analysis. International Journal of Infectious Diseases 94 (2020) 91.[5] R. Lu, X. Zhao, J. Li, P. Niu, B. Yang, H. Wu, et al. Genomic characterisation and epidemiology of 2019 novel coronavirus: implications for virus origins and receptor binding. The Lancet 395(10224) (2020) 565.[6] R. Hilgenfeld. From SARS to MERS: crystallographic studies on coronaviral proteases enable antiviral drug design. The FEBS journal 281(18) (2014) 4085.[7] D. Wrapp, N. Wang, K.S. Corbett, J.A. Goldsmith, C.L. Hsieh, O. Abiona, et al. Cryo-EM structure of the 2019-nCoV spike in the prefusion conformation. Science (New York, NY) 367(6483) (2020) 1260.[8] P.A. Rota, M.S. Oberste, S.S. Monroe, W.A. Nix, R. Campagnoli, J.P. Icenogle, et al. Characterization of a novel coronavirus associated with severe acute respiratory syndrome. Science (New York, NY) 300(5624) (2003) 1394.[9] M. Donoghue, F. Hsieh, E. Baronas, K. Godbout, M. Gosselin, N. Stagliano, et al. A novel angiotensin-converting enzyme-related carboxypeptidase (ACE2) converts angiotensin I to angiotensin 1-9. Circulation research 87(5) (2000) E1.[10] H. Zhang, Z. Kang, H. Gong, D. Xu, J. Wang, Z. Li, et al. The digestive system is a potential route of 2019-nCov infection: a bioinformatics analysis based on single-cell transcriptomes. bioRxiv (2020) 2020.01.30.927806.[11] Y. Zhao, Z. Zhao, Y. Wang, Y. Zhou, Y. Ma, W. Zuo. Single-cell RNA expression profiling of ACE2, the putative receptor of Wuhan 2019-nCov. bioRxiv (2020) 2020.01.26.919985.[12] E.I. Bahbah, A. Negida, M.S. Nabet. Purposing Saikosaponins for the treatment of COVID-19. Med Hypotheses 140 (2020) 109782.[13] I.W. Cheung, S. Nakayama, M.N. Hsu, A.G. Samaranayaka, E.C. Li-Chan. Angiotensin-I converting enzyme inhibitory activity of hydrolysates from oat (Avena sativa) proteins by in silico and in vitro analyses. Journal of agricultural and food chemistry 57(19) (2009) 9234.[14] T. Joshi, T. Joshi, P. Sharma, S. Mathpal, H. Pundir, V. Bhatt, et al. In silico screening of natural compounds against COVID-19 by targeting Mpro and ACE2 using molecular docking. European review for medical and pharmacological sciences 24(8) (2020) 4529.[15] S. Shahid, A. Kausar, M. Khalid, S. Tewari, T. Alghassab, T. Acar, et al. analysis of binding properties of angiotensin-converting enzyme 2 through in silico molecular docking, 2018.[16] K. Teralı, B. Baddal, H.O. Gülcan. Prioritizing potential ACE2 inhibitors in the COVID-19 pandemic: Insights from a molecular mechanics-assisted structure-based virtual screening experiment. J Mol Graph Model 100 (2020) 107697.[17] M. Muchtaridi, M. Fauzi, N.K. Khairul Ikram, A. Mohd Gazzali, H.A. Wahab. Natural Flavonoids as Potential Angiotensin-Converting Enzyme 2 Inhibitors for Anti-SARS-CoV-2. Molecules 25(17) (2020) 3980.[18] M.J. Huentelman, J. Zubcevic, J.A. Hernández Prada, X. Xiao, D.S. Dimitrov, M.K. Raizada, et al. Structure-based discovery of a novel angiotensin-converting enzyme 2 inhibitor. Hypertension (Dallas, Tex : 1979) 44(6) (2004) 903.[19] S. Choudhary, Y.S. Malik, S. Tomar. Identification of SARS-CoV-2 Cell Entry Inhibitors by Drug Repurposing Using in silico Structure-Based Virtual Screening Approach. Front Immunol 11((2020) 1664.[20] C.A. Lipinski. Lead-and drug-like compounds: the rule-of-five revolution. Drug Discovery Today: Technologies 1(4) (2004) 337.[21] B. Jayaram, T. Singh, G. Mukherjee, A. Mathur, S. Shekhar, V. Shekhar, Eds. Sanjeevini: a freely accessible web-server for target directed lead molecule discovery. Proceedings of the BMC bioinformatics; 2012. Springer (Year).[22] D.E. Pires, T.L. Blundell, D.B. Ascher. pkCSM: predicting small-molecule pharmacokinetic and toxicity properties using graph-based signatures. Journal of medicinal chemistry 58(9) (2015) 4066.[23] P. Towler, B. Staker, S.G. Prasad, S. Menon, J. Tang, T. Parsons, et al. ACE2 X-ray structures reveal a large hinge-bending motion important for inhibitor binding and catalysis. The Journal of biological chemistry 279(17) (2004) 17996.[24] N.A. Dales, A.E. Gould, J.A. Brown, E.F. Calderwood, B. Guan, C.A. Minor, et al. Substrate-based design of the first class of angiotensin-converting enzyme-related carboxypeptidase (ACE2) inhibitors. Journal of the American Chemical Society 124(40) (2002) 11852.[25] P. Pandey, J.S. Rane, A. Chatterjee, A. Kumar, R. Khan, A. Prakash, et al. Targeting SARS-CoV-2 spike protein of COVID-19 with naturally occurring phytochemicals: an in silico study for drug development. Journal of Biomolecular Structure and Dynamics (2020) 1.[26] C.A. Lipinski. Lead- and drug-like compounds: the rule-of-five revolution. Drug discovery today Technologies 1(4) (2004) 337.[27] R.O. Barros, F.L. Junior, W.S. Pereira, N.M. Oliveira, R.M. Ramos. Interaction of drug candidates with various SARS-CoV-2 receptors: An in silico study to combat COVID-19. Journal of Proteome Research (2020).

LANGUAGE NOTE | Document text in Chinese; abstract also in English. 據史實所可考知，中國古代自殷商時代已傳衍一種存祀的國際關係思想。可以命之為存祀主義。相傳殷商高宗武丁時代已有這種思想。 惟在後世聖賢學者與君后諸侯普遍信持的歷史記載，則多以周武王克商故事為根據。成為歷代傳承的丈事典範。故事內容十分具體而顯明。就是在武王克商之後除了殺掉妲己，並把纣王懸首在白旗上。同時散發鹿台（地名）之財，分發鉅橋（地名）之粟，分给黎民百姓。並派人釋放被囚的箕子（人名）和眾百姓，派人封比干（人名）之墓，表彰商容（人名）的門閭。更封紂的兒子武庚旅父（人名）保存原有的殷商政權。此外更分神農、黃帝、唐堯、虞舜、夏禹等帝王的後人立為封國。因是古代聖賢俱頌稱為王道。 在古代的學術思想名家，先後普遍頌揚武王的存祀主義的王道。有孔子、子思、荀子、以及儒家後學，一致宏揚孔子所説：「興滅國，繼絕世，舉逸民，天下之民歸心焉。」而法家的管子，更是幫助齊桓公實質履行存祀主義，儒家經典盛讚齊桓公的三存亡國，一繼絕世。因是使春秋時代的霸業，有一個存祀主義 王道思想。我人尚可以在《左傳》、《國語》書中發現此一實殘的例子。 存祀主義進入秦漢大一統之世，已在政治運行上消褪。然至明清兩代，更成為封貢體制(Tributary System)中一個政治信念。明清帝君對於朝貢國多有履踐。仍不廢王道。中國最後一次履行存祀主義，是在光緒五年(1879)在日本呑併琉球的交涉中，主張為琉球保存其所據大島，以延績琉球宗廟血祀。此為帝國主義者暗笑中國的迂闊愚昧。然而今世爭殺是尚，弱小民族如何避免征服，逃脱被奴役命運。此是世界人 類共同思考之大問題。According to historical records, since the Shang era, a nationally related ideology regarding the worship of royal ancestors had existed in ancient China. It was believed that such kind of thoughts existed in as early as the Gao-zhong Wu Ding period in the ancient Shang Dynasty. However scholars, kings, queens and the noblemen in later years generally tended to believe in records about inheritance that were based on the story of King Zhou Wu who conquered Shang. This had become the paradigm of historical inheritance. The story was very concrete and its message obvious. After King Wu conquered Shang, apart from killing the Shang King’s concubine Tan Ji and hanging up the head of the infamous King Zhou on a white flag, he also distributed the wealth in Lu-tai and the food in Ju Qiao to civilians; moreover he sent people to release the imprisoned Qi Zi and other civilians; he sent someone to honor the tomb of Bi Gan and decorate the door of Shang Rong; King Zhou s son Wu Gang Lu Fu was allowed to maintain Shang’s political power. In addition, the descendants of Shen Nong, Huang Di, Tang Yao, Yu Shun and Xia Yu were awarded territories. Many ancient scholars lauded such generosity as regal benevolence. Renowned thinkers and philosophers in ancient China had been praising King Wu's regal benevolence ideology. Confucius, Zi Si, Xun Zi and other confucius followers unanimously upheld what Confucius proclaimed, “Assist defeated states to recover, let political regimes of the ousted rulers continue, give glory to hermits of the previous dynasty, then all the people would whole-heartedly render support to the ruling power.” Guan Zi of the Legalistic School helped Qi Wun Gong (Duke of Qi) implement ancestral inheritance. In the Confucius classics, Qi Wun Gong was much acclaimed for rendering help to defeated states three times, and helping to perpetuate ancestral worship of ousted states. Thus we can tell that during the hegemony of the war-tom Spring-autumn era, such royal inheritance thoughts existed. Concrete examples can be found in classics such as “Zou Zhuan" and "Guoyu". The regal benevolence tenet faded out politically in the unified Qin and Han era. Nevertheless, in the Ming and Qing dynasty, it had evolved into a political ideology in the Tributary System The kings of Ming and Qing Dynasty upheld regal benevolence through pledging to protect their protege states. The last ancestral worship tenet was seen in the fifth year of Guang Xu's rule (1879) when Japan had taken Ryukyu Island. The Emperor of the Qing Dynasty insisted that Ryukyu Island should keep Da Dao (Big Island) so as to allow it to maintain its ancestral worship practice and blood-line. The imperialists sneered at China as ignorant and stupid. However, in contemporary time, amidst fighting and killings, how vulnerable tribes could avoid being conquered and enslaved is actually an important issue for all people to ruminate.

Graphene-based composites have received a great deal of attention in recent year because the presence of graphene can enhance the conductivity, strength of bulk materials and help create composites with superior qualities. Moreover, the incorporation of metal oxide nanoparticles such as Fe3O4 can improve the catalytic efficiency of composite material. In this work, we have synthesized a composite material with the combination of reduced graphene oxide (rGO), and Fe3O4 modified tissue-paper (mGO-PP) via a simple hydrothermal method, which improved the removal efficiency of the of methylene blue (MB) in water. MB blue is used as the model of contaminant to evaluate the catalytic efficiency of synthesized material by using a Fenton-like reaction. The obtained materials were characterized by SEM, XRD. The removal of materials with methylene blue is investigated by UV-VIS spectroscopy, and the result shows that mGO-PP composite is the potential composite for the color removed which has the removal efficiency reaching 65% in acetate buffer pH = 3 with the optimal time is 7 h. Keywords Graphene-based composite, methylene blue, Fenton-like reaction. References [1] Ma Joshi, Rue Bansal, Reng Purwar, Colour removal from textile effluents, Indian Journal of Fibre & Textile Research, 29 (2004) 239-259 http://nopr.niscair.res.in/handle/123456789/24631.[2] Kannan Nagar, Sundaram Mariappan, Kinetics and mechanism of removal of methylene blue by adsorption on various carbons-a comparative study, Dyes and pigments, 51 (2001) 25-40 https://doi.org/10.1016/S0143-7208(01)00056-0.[3] K Rastogi, J. N Sahu, B. C Meikap, M. 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