Academic literature on the topic 'Shang wang shi gu'

ABSTRACTThis paper assembles three oracle-bone inscriptions divined at the same time from the Wu Yi-Wen Ding period. Two are identical, being a paired divination inquiring into whether the event ri yue you shi was or was not auspicious. The third asks whether, in light of this ri yue you shi, it would be auspicious to sacrifice to Shang Jia.Since 1925, when Wang Xiang , first proposed th at the character yue should be read as xi, his position has been accepted by Liu Chaoyang De Xiaoqian , Chen Mengijia , Zhang Peiyü , Xu Zhentao , the Zhongguo Tianwenxue jianshi bianxiezu , and the Zhongguo Tianwenxueshi zhengli yenjiu xiaozu Yue was first interpreted as yue in 1933 by Shang Chengzuo . Those subscribing to this reading include Dong Zuobin , Chen Zungui , Yü Xingwu Liu Chaoyang, Chen Mengiia, Joseph Needham, Zhao Quemin and Chen Banghuai .Among these scholars Liu Chaoyang holds that “there is no distinction between xi and yue,” while Chen Mengjia believes that the phrase “ri yue you shi” can also be read “ri xi you shi,” hence they accept both interpretations.

INTRODUCTION: We compared the physiological responses, psychomotor performances, and hypoxia symptoms between 7000 m and 7500 m (23,000 and 24,600 ft) exposure to develop a safer hypoxia training protocol.METHODS: In altitude chamber, 66 male pilots were exposed to 7000 and 7500 m. Heart rate and arterial oxygen saturation were continuously monitored. Psychomotor performance was assessed using the computational task. The hypoxic symptoms were investigated by a questionnaire.RESULTS: The mean duration time of hypoxia was 323.0 56.5 s at 7000 m and 218.2 63.3 s at 7500 m. The 6-min hypoxia training was completed by 57.6% of the pilots and 6.1% of the pilots at 7000 m and at 7500 m, respectively. There were no significant differences in pilots heart rates and psychomotor performance between the two exposures. The Spo2 response at 7500 m was slightly severer than that at 7000 m. During the 7000 m exposure, pilots experienced almost the same symptoms and similar frequency order as those during the 7500 m exposure.CONCLUSIONS: There were concordant symptoms, psychomotor performance, and very similar physiological responses between 7000 m and 7500 m during hypoxia training. The results indicated that 7000-m hypoxia awareness training might be an alternative to 7500-m hypoxia training with lower DCS risk and longer experience time.Wen D, Tu L, Wang G, Gu Z, Shi W, Liu X. Psychophysiological responses of pilots in hypoxia training at 7000 and 7500 m. Aerosp Med Hum Perform. 2020; 91(10):785789.

Nature is an excellent source of inspiration for the widespread application of science and technology. Researchers learn from biological principles and gradually develop from the earliest direct use of biological materials to the design and development of new biomimetic materials inspired by nature. Therefore, the innovation of bioinspired nanomaterials will enable tremendous advances in biology and biochemistry with biomimetic capabilities, such as biosensing, cell imaging, and drug delivery. In this presentation, I will discuss my group’s recent work on two bioinspired nanomaterials: nano-peptoids and single-atom nanozymes. The first type of bioinspired materials is a sequence-defined peptide-like materials that can mimic the structure and function of peptides and proteins. Compared with peptides and proteins, peptoids have a high degree of thermal and chemical stability, and are resistant to proteolytic degradation. In addition, due to the lack of intramolecular and intermolecular backbone hydrogen bond donors, it is possible to precisely control the peptoid and peptoid-substrate interactions, leading to bio-inspired synthesis of nanomaterials with a layered structure. As a peptide mimic, the peptoids has biocompatibility, non-toxicity and sequence-specific heteropolymers. Nano-peptoids can be synthesized with polar and hydrophobic monomers and have the following advantages: They can be easily processed into desired shapes (e.g. dendritic, sheets, tubes and vesicles), and the size range is 2-100 nm to enhance cell targeting and uptake. The application of nano-peptoids in cell imaging and cancer theranostics will be discussed. Another type of bioinspired nanomaterials with enzyme-like properties is single-atom nanoenzymes. As a biocatalyst, natural enzymes have the ability to accelerate various reaction rates with extremely high activity and selectivity under mild conditions. However, due to the temperature and pH-related denaturation of proteins and the possibility of contamination by bacteria or other reagents, the shelf life of natural enzymes is limited or uncertain, and their purification and production costs are high. Therefore, natural enzymes must narrow the range of conditions under which they can be used, limiting their further applications in biosensing and biomedicine. R Recent research has focused on the rational design of nanomaterials with inherent enzyme-like catalytic properties (for example, oxidase, peroxidase, catalase, superoxide dismutase, and so on) and exploration of their applications in various fields. Although much progress has been made, the development of nanozymes is still hampered by several challenges. Catalytic activity and substrate selectivity are the two most important issues that need to be resolved to allow the technology to reach full maturity. Therefore, rational design and tuning of nanomaterials is highly desirable for the development of novel enzyme-mimic nanomaterials with precise catalytic sites. We have developed various Fe-N-C based single atomic site catalysts which have similar structure with active site of peroxidase. These atomically-dispersed Fe-N-C materials have enzyme-like properties, therefore they are classified as single-atom nanozymes. Together with their abundantly exposed active sites and specific structures, these single atomic nanozymes have great potential for the enhancement of biocatalytic activity and selectivity in biosensing. Jiao, H. Yan, Y. Wu, W. Gu, C. Zhu, D. Du, Y. Lin. When Nanozymes Meet Single-Atom Catalysis. Angew. Chem. Int. Ed. 2020,132, 2585-2596 Zhu, S. Fu, Q. Shi, D. Du, Y. Lin. Single-Atom Electrocatalysts. Angew. Chem. Int. Ed. 2017, 56, 13944-13960. Cheng, J. Li, D. Liu, Y. Lin, D. Du. Single-Atom Nanozyme Based on Nanoengineered Fe-N-C Catalyst with Superior Peroxidase-Like Activity for Ultrasensitive Bioassays. Small, 2019, 1901485. Niu, Q. Shi, W. Zhu, D. Liu, H. Tian, S. Fu, N. Cheng, S. Li, J. N Smith, D. Du, Y. Lin. Unprecedented Peroxidase-mimicking Activity of Single-atom Nanozyme with Atomically Dispersed Fe-Nx Moieties Hosted by MOF Derived Porous Carbon. Biosensors & Bioelectronics, 2019, 142, 111495. Jiao, W. Xu, Y. Wu, H. Yan, W. Gu, D. Du, Y Lin, C. Zhu, Single-atom Catalysts Boost Signal Amplification for Biosensing. Chemical Society Reviews 2021, 50, 750-765 Luo, Y. Song, M. Wang, T. Jian, S. Ding, P. Mu, Z. Liao, Q. Shi, X. Cai, H. Jin, D. Du, W. Dong, C. Chen, Y. Lin. Bioinspired Peptoid Nanotubes for Targeted Tumor Cell Imaging and Chemo-Photodynamic Therapy. Small 2019, 1902485. Song, M. Wang, S. Akkineni, W. Yang, J.J. Hettige, H. Jin, Z. Liao, P. Mu, F. Yan, M. Baer, J. De Yoreo, D. Du, Y. Lin, C. Chen. Highly Bright and Photostable Two-Dimensional Nanomaterials Assembled from Sequence-Defined Peptoids. ACS Materials Letters 2021, 3, 420-427. Cai, M. Wang, P. Mu, T. Jian, D. Liu, S. Ding, Y. Luo, D. Du, Y. Song, C. Chen, Y. Lin. Sequence-Defined Nanotubes Assembled from IR780-Conjugated Peptoids for Chemophototherapy of Malignant Glioma. Research 2021, Article ID 9861384.

Electrochemical water splitting, an effective approach of generating high purity hydrogen in a clean way, is composed of two half reactions: hydrogen evolution reaction (HER) and oxygen evolution reaction (OER).[1] OER is the main rate-limiting half reaction for water splitting due to its sluggish four-electron transfer process.[2] , [3] An efficient electrocatalyst is indispensable to minimize the activation barrier for the reaction and achieve a high efficiency. Recently, two-dimensional (2D) layered double hydroxides (LDHs) have shown promises as one of the most effective electrocatalysts towards OER. However, the confined nanostructure with poor electronic conductivity inhibits their further enhanced catalytic performance towards OER. Herein, a 3D core-shell LDH structure is synthesized through a facile one-step reaction strategy, in which the terephthalic acid and urea is employed as the organic ligand for the metal organic framework (MOF) precursor and surface coordination buffer between LDH and MOF. Benefiting from the hierarchical 3D microstructure with uniformly nanosheets grown on the surface, the as prepared electrocatalyst exhibits rich edge active sites and enormous electrochemical surface area. The representative sample (namely, CoNi-LDH@BDC) achieves an excellent OER activity with a low overpotential of 280 mV at 100 mA cm-2 and robust cyclic stability. In addition, quasi-operando studies using X-ray absorption and X-ray photoelectron spectroscopy further elucidate that the Co-Ni dual metal sites act as the main active site while Ni of high valence state is a favorable site to oxygen for the O-O bond formation. The prominent OER performance is also attributed to the synergistic effect between different transition metal atoms. References [1] L. Yu, H. Zhou, J. Sun, F. Qin, F. Yu, J. Bao, Y. Yu, S. Chen, Z. Ren, Energy Environ. Sci. 2017, 10, 1820. [2] Y. Wang, C. Xie, Z. Zhang, D. Liu, R. Chen, S. Wang, Adv. Funct. Mater. 2018, 28, 1703363. [3] L. Zhuang, L. Ge, Y. Yang, M. Li, Y. Jia, X. Yao, Z. Zhu, Adv. Mater. 2017, 29, 1606793. [4] R. Frydendal, E. A. Paoli, B. P. Knudsen, B. Wickman, P. Malacrida, I. E. L. Stephens, I. Chorkendorff, ChemElectroChem 2014, 1, 2075. [5] Y. Lee, J. Suntivich, K. J. May, E. E. Perry, Y. Shao-Horn, Synthesis and activities of rutile IrO 2 and RuO 2 nanoparticles for oxygen evolution in acid and alkaline solutions, Vol. 3, American Chemical Society, 2012, pp. 399–404. [6] M. Gao, W. Sheng, Z. Zhuang, Q. Fang, S. Gu, J. Jiang, Y. Yan, J. Am. Chem. Soc. 2014, 136, 7077.

Novel Coronavirus 2019 (covid-19) is a generation of the coronavirus that humans have never identified. This virus was first reported to cause an outbreak in Wuhan, China, in December 2019. Until now, covid-19 infection cases have been reported in many countries, such as Thailand, Japan, South Korea, Iran, Italy, Germany, and more than 90 countries worldwide. Until November 1, 2020, a total of 412.784 positive cases of covid-19 were recorded, with 341.942 recovered patients and 13.943 deaths in Indonesia. The purpose of this event is to anticipate the spread of Covid-19 by reminding the public to maintain health protocols and other alternatives in preserving health, also increasing body immunity through massage and traditional Indonesian herbal medicine. This event received a good response from the public. It was evidenced by the number of participants exceeding the predetermined quota and enthusiastic in following the speaker's material. The event was a success and was well received by the participants as well as the local government. After following this event, participants can practise the knowledge obtained from the presenters to maintain and protect their health and immunity from Covid-19. Keywords: Covid-19, Community service, body immunity DAFTAR PUSTAKA Amri, Sofan. Iif Khoiru Ahmadi. 2010. Proses Pembelajaran Kreatif dan Inovatif Dalam Kelas: Metode, Landasan Teoritis-Praktis dan Penerapannya. Jakarta: PT. Prestasi Pustakaraya. Badan Pusat Statistik Kota Surabaya. “Jumlah RT RW Kecamatan Dukuh Pakis Menurut Kelurahan Tahun 2017”. surabayakota.bps.go.id. https://surabayakota.bps.go.id/statictable/2018/04/19/594/jumlah-rt-rw-kecamatan-dukuh-pakis-menurut-kelurahan-tahun-2017.html. (diakses 15 Desember 2020). Huang C, Wang Y, Li X, Ren L, Zhao J, Hu Y, Zhang L, Fan G, Xu J, Gu X, Cheng Z. 2020. “Clinical features of patients infected with 2019 novel coronavirus in Wuhan, China”. Lancet 2020: 395: 497-506. doi: https://doi.org/10.1016/S0140-6736(20)30183-5. Kementerian Kesehatan Republik Indonesia. 2020. Pedoman Kesiapsiagaan Menghadapi Coronavirus Disease (covid-19). Jakarta: Direktorat Jenderal Pencegahan dan Pengendalian Penyakit (P2P). Komite Penanganan Covid-19 dan Pemulihan Ekonomi Nasional. “Pasien Sembuh Harian Mencapai 4.141 Orang”. covid19.go.id. https://covid19.go.id/berita/pasien-sembuh-harian-mencapai-4141-orang. (diakses 15 Desember 2020). Kumar, M., & Dwivedi, S. 2020. “Impact of Coronavirus Imposed Lockdown on Indian Population and their Habits”. International Journal of Science and Healthcare Research Vol.5 Issue: 2: April-June 2020. ISSN: 2455-7587. Li, S., Wang, Y., Xue, J., Zhao, N., & Zhu, T. 2020. “The impact of covid-19 epidemic declaration on psychological consequences: A study on active weibo users”. International Journal of Environmental Research and Public Health, 17(6), 1–9. doi: https://doi.org/10.3390/ijerph17062032. Pemerintah Kota Surabaya, “Statistik”. lawancovid-19.surabaya.go.id. https://lawancovid-19.surabaya.go.id/visualisasi/graph. (diakses 15 Desember 2020). Rizma Riyandi. “Data Kecamatan Surabaya: Dukuh Pakis, Penduduk dan Wilayah”. ayosurabaya.com. https://www.ayosurabaya.com/read/2020/09/28/3230/data-kecamatan-surabaya-dukuh-pakis-penduduk-dan-wilayah. (diakses 15 Desember 2020). Zhu N, Zhang D, Wang W, Li X, Yang B, Song J, Zhao X, Huang B, Shi W, Lu R, Niu P. 2020. “A novel coronavirus from patients with pneumonia in China, 2019”. New England Journal of Medicine 2020: 382: 727-733. doi: 10.1056/NEJMoa2001017

Electrochemical water splitting to produce hydrogen has attracted great interest as an environmentally-friendly renewable fuel. While cathodic hydrogen evolution (HER) is a relatively fast process that produces a valuable chemical, the anodic oxygen evolution reaction (OER) is a slow process that adds little to no economic value to water splitting.1,2 Generating a high-performance oxidizer such as ozone instead of oxygen could make water splitting more economically feasible because of the added value of ozone. However, electrochemical ozone production (EOP) catalysts are typically hindered by low current efficiencies, poor selectivity, low stability, and high energy demands, which limit the industrial application of this reaction.3,4 Further improvements in catalyst performance could be achieved by better understanding the mechanism of ozone production. Nickel and antimony doped tin oxide (Ni/Sb-SnO2, NATO) is currently reported to have the highest EOP current efficiency at room temperature. However, the mechanism of EOP on NATO electrodes has not yet been established. A primary complication when studying the mechanism of EOP using NATO electrocatalysts in water is that oxygen atoms in the ozone molecule can originate from sources other than water, such as dissolved molecular oxygen or the electrocatalyst oxide lattice.1,5,6 In this work, lattice oxygen participation in EOP is investigated by replacing water with acetonitrile, a polar aprotic solvent without oxygen atoms. Our results show that ozone can be generated in acetonitrile in similar quantities as aqueous conditions.2 These quantities are inconsistent with a 6-electron process based on calculated current efficiencies. Furthermore, the addition of small quantities of water is shown to have a negative impact on ozone generation. The origin of this impact is thought to not be mechanistic in nature. Instead, we suggest that adding water to the mixture leads to the generation of hydroxide ions which act as ozone scavengers. To our knowledge, this is the first report of electrochemical ozone production in a non-aqueous solvent. Future work will more conclusively determine the origin of oxygen atoms using isotopic labeling. Furthermore, the ability of nonaqueous solvents to stabilize reactive oxygen species and impact selectivity will be investigated. Utilizing the knowledge gained by studying ozone generation in nonaqueous solvents, it might be possible to design a better EOP system which could enhance the applicability of this reaction. (1) Lees, C. M.; Lansing, J. L.; Morelly, S. L.; Lee, S. E.; Tang, M. H. Ni- and Sb-Doped SnO2 Electrocatalysts with High Current Efficiency for Ozone Production via Electrodeposited Nanostructures. J. Electrochem. Soc. 2018, 165 (16), E833. https://doi.org/10.1149/2.0051816jes. (2) James L. Lansinga±, Lingyan Zhaob, Tana Siboonruanga, N. Harsha Attanayakea, Angela B. Leob, Peter Fatourosb, So Min Parkc, Kenneth R. Grahamc, John A. Keithb, Maureen Tang*a. Gd-Ni-Sb-SnO2 Electrocatalysts for Active and Selective Ozone Production. (3) Christensen, P. A.; Attidekou, P. S.; Egdell, R. G.; Maneelok, S.; Manning, D. A. C.; Palgrave, R. Identification of the Mechanism of Electrocatalytic Ozone Generation on Ni/Sb-SnO 2. J. Phys. Chem. C 2017, 121 (2), 1188–1199. https://doi.org/10.1021/acs.jpcc.6b10521. (4) Wang, Y.-H.; Chen, Q.-Y. Anodic Materials for Electrocatalytic Ozone Generation. Int. J. Electrochem. 2013, 2013, 1–7. https://doi.org/10.1155/2013/128248. (5) Jiang, W.; Wang, S.; Liu, J.; Zheng, H.; Gu, Y.; Li, W.; Shi, H.; Li, S.; Zhong, X.; Wang, J. Lattice Oxygen of PbO 2 Induces Crystal Facet Dependent Electrochemical Ozone Production. J. Mater. Chem. A 2021, 9 (14), 9010–9017. https://doi.org/10.1039/D0TA12277G. (6) Feng, J.; Johnson, D. C.; Lowery, S. N.; Carey, J. J. Electrocatalysis of Anodic Oxygen‐Transfer Reactions: Evolution of Ozone. J. Electrochem. Soc. 1994, 141 (10), 2708–2711. https://doi.org/10.1149/1.2059184.

Introdução: A COVID-19 tornou-se uma emergência de saúde pública no ano de 2020, sendo caracterizada como pandemia no mês de março. Os idosos compõem o grupo de risco dessa doença. Objetivo: Avaliar os efeitos da pandemia de COVID-19 sobre os idosos. Material e Método: A busca pelos artigos foi realizada através da plataforma Pubmed, com a inclusão de 17 estudos. Resultados: Os resultados ressaltaram a prevalência da doença entre a população idosa, e evidenciaram que esse grupo apresenta sintomas atípicos e com duração ligeiramente mais longa desde o início da sintomatologia até a sua admissão, tornando-se mais difícil a identificação da infecção de forma precoce. As manifestações clínicas mais relatadas foram: febre, tosse, produção de escarro, diarreia, fadiga, pneumonia e lesão cardíaca aguda. Também se observa que comorbidades, como hipertensão e doença pulmonar obstrutiva crônica, levam a uma disfunção cardíaca e pulmonar devido a mudanças fisiológicas e anatômicas dos pulmões, agravando o quadro clínico dos pacientes. Os exames de imagem se mostraram grandes aliados ao diagnóstico das alterações pulmonares decorrentes da infecção, além da realização do exame RT-PCR. Conclusão: Os idosos compõem o grupo de risco da COVID-19, sendo indivíduos com comorbidades os mais susceptíveis à agravamentos clínicos. Há necessidades em seguir as recomendações da OMS por não haver um tratamento específico destinado a essa patologia. Descritores: Infecções por Coronavírus; Idoso; Diagnóstico Clínico. Referências World Health Organization [homepage internet]. Pandemia de doença por coronavirus (COVID-19) [acesso em 19 nov 2020]. Disponível em: http: https://www.who.int/emergencies/diseases/novel-coronavirus-2019?gclid=CjwKCAiAzN j9BRBDEiwAPsL0d-MtvP29HNfG_fKThMRyfZF5ZAhTrrwKXEDh74AOZlY7ddRjJ_su0 hoCK3EQAvD_BwE. Organização Pan-Americana de Saúde [homepage na internet]. Folha informativa COVID-19 - Escritório da OPAS e da OMS no Brasil [acesso em: 19 nov. 2020]. Disponível em: https://www.paho.org/pt/covid19. Ministério da Saúde [homepage na internet]. Painel Coronavirus Brasil [acesso em: 19 nov. 2020]. Disponível em: http:https://covid.saude.gov.br/. Liu K, Zhang W, Yang Y, Zhang J, Li Y, Chen Y. Respiratory rehabilitation in elderly patients with COVID-19: A randomized controlled study. Complement The Clin Pract. 2020:101166. Lee JY, Kim HA, Huh K, Hyun M, Rhee J-Y, Jang S, et al. Risk Factors for Mortality and Respiratory Support in Elderly Patients Hospitalized with COVID-19 in Korea. J Korean Med Sci. 2020;35(23) Nikpouraghdam M, Farahani AJ, Alishiri G, Heydari S, Ebrahimnia M, Samadinia H, et al. Epidemiological characteristics of coronavirus disease 2019 (COVID-19) patients in IRAN: A single center study. J Clin Virol. 2020; 127:104378. Zheng Y, Xu H, Yang M, Zeng Y, Chen H, Liu R, et al. Epidemiological characteristics and clinical features of 32 critical and 67 noncritical cases of COVID-19 in Chengdu. J Clin Virol. 2020;127:104366. Porcheddu R, Serra C, Kelvin D, Kelvin N, Rubino S. Similarity in case fatality rates (CFR) of COVID-19/SARS-COV-2 in Italy and China. J Infect Dev Ctries. 2020;14(02):125-8. Buckner FS, McCulloch DJ, Atluri V, Blain M, McGuffin SA, Nalla AK, et al. Clinical Features and Outcomes of 105 Hospitalized patients with COVID-19 in Seattle, Washington. Clin Infect Dis. 2020;71(16):2167-73. Liu K, Fang Y-Y, Deng Y, Liu W, Wang M-F, Ma J-P, et al. Clinical characteristics of novel coronavirus cases in tertiary hospitals in Hubei Province. Chin Med J. 2020;133(9):1025-31. Zhao M, Wang M, Zhang J, Gu J, Zhang P, Xu Y, et al. Comparison of clinical characteristics and outcomes of patients with coronavirus disease 2019 at different ages. Aging (Albany NY). 2020;12(11):10070. Wang L, He W, Yu X, Hu D, Bao M, Liu H, et al. Coronavirus disease 2019 in elderly patients: Characteristics and prognostic factors based on 4-week follow-up. J Infect. 2020;80(6):639-45. Guo T, Shen Q, Guo W, He W, Li J, Zhang Y, et al. Clinical Characteristics of Elderly Patients with COVID-19 in Hunan Province, China: A Multicenter, Retrospective Study. Gerontol. 2020:1-9. Ward CF, Figiel GS, McDonald WM. Altered Mental Status as a Novel Initial Clinical Presentation for COVID-19 Infection in the Am J Geriatr Psychiatry. 2020;28(8):808-11. Liu K, Chen Y, Lin R, Han K. Clinical features of COVID-19 in elderly patients: A comparison with young and middle-aged patients. J Infect. 2020;80(6):e-14-8. Li T, Zhang Y, Gong C, Wang J, Liu B, Shi L, et al. Prevalence of malnutrition and analysis of related factors in elderly patients with COVID-19 in Wuhan, China. Eur J Clin Nutr. 2020:1-5. Niu S, Tian S, Lou J, Kang X, Zhang L, Lian H, et al. Clinical characteristics of older patients infected with COVID-19: A descriptive study. Arch Gerontol Geriatr. 2020;89:104058. Fatyga E, Dzięgielewska-Gęsiak S, Wierzgoń A, Stołtny D, Muc-Wierzgoń M. The coronavirus disease 2019 pandemic: telemedicine in elderly patients with type 2 diabetes. Pol Arch int Med. 2020;130(5):452-54. Li P, Chen L, Liu Z, Pan J, Zhou D, Wang H, et al. Clinical Features and Short-term Outcomes of Elderly Patients With COVID-19. Int J Infect Dis. 2020;97:245-50. Kumar A, Kubota Y, Chernov M, Kasuya H. Potential Role of Zinc Supplementation in Prophylaxis and Treatment of COVID-19. Med Hypotheses. 2020;144:109848.

Tin (Sn) is a metal that is commonly used in our daily life. With the rapid development of lithium-ion battery in the past decades, Sn and its alloy, such as Sn-Cu[1], and Sn-Ni[2], Sn-Co[3] and Sn-Fe[4] have been used as anode for lithium-ion battery because they can undergo alloying/dealloying process with lithium ions and exhibit high capacity and suitable working voltage of about 0.4 V vs. Li/Li+. Sn can also undergo an oxidation reaction to Sn2+, with an electrode potential of about -0.14 V vs. SHE. It is therefore possible to also use Sn as a cathode material. Herein, we are first to demonstrate a metal-metal battery made up of Sn metal as the cathode and Li metal as the anode in organic electrolyte (see Fig. a). Sn foil and Li foil are simply assembled with 3M LiTFSI in dimethoxyethane/propylene carbonate (DME/PC) electrolyte in an Ar-filled glove box to form a pouch cell. During charging, Sn will give out two electrons and dissolves into the electrolyte as Sn2+, while during discharging, the metal ions will be re-deposited onto the cathode. Thus, the energy is stored in the form of Sn2+ in the electrolyte. The charge-discharge curves in Fig. b show that the operating voltage of the battery is about 2.8 V. Since Sn2+ that is dissolved into the electrolyte from the cathode has higher potential than the Li metal anode, any Sn2+ ions cross-over to the anode will be spontaneously reduced, decreasing the efficiency of the battery. To suppress such self-discharge process, an anion exchange membrane based on poly(ionic liquid) polymer coated on common polypropylene separator is adopted. The Sn-Li battery with the modified separator tested in a current rate of 0.2 mA cm-2 with a capacity limitation of 0.1 mAh cm-2 gives an average Coulombic efficiency about 99.5% and can be cycled for more than 1500 cycles(See Fig. c). We found that the stripping/deposition of Sn on the cathode, and its polarization depend strongly on the type of electrolyte used. With 3M LiTFSI in DME/PC electrolyte, the discharge voltage is lowered by about 0.05 V when the current density is increased from 0.2 mA cm-2 to 1 mA cm-2. More results on the factors affecting the charge-discharge performance of Sn-Li batteries will be discussed at the meeting. [1]X. F. Tan, S. D. McDonald, Q. Gu, Y. Hu, L. Wang, S. Matsumura, T. Nishimura, K. Nogita, Journal of Power Sources 2019, 415, 50. [2]H. Zhang, T. Shi, D. J. Wetzel, R. G. Nuzzo, P. V. Braun, Advanced Materials 2016, 28, 742. [3]J. Yang, J. Zhang, X. Zhou, Y. Ren, M. Jiang, J. Tang, ACS Applied Materials & Interfaces 2018, 10, 35216. [4]Z. Lin, X. Lan, X. Xiong, R. Hu, Materials Chemistry Frontiers 2021, 5, 1185. Figure 1

碩士
國立中山大學
中國語文學系研究所
91
Integrated with the study of Chinese Classics, the Ch’en-wei thoughts posed as the mainstream of East Han’s philosophy studies but the thoughts also aroused different opinions. As early as in the beginning of West Han Dynasty, Liu Shin tried to oppose the studies of Modern Scripts with the studies of Ancient Scripts. Yang Xiong, a great thinker in late West Han Dynasty, tried to suppress the popularity of superstition with the concept of Dao Fa Zi Ran (meaning that Daoism lies in the Nature). In the beginning of East Han Dynasty, Heng Tan is the first thinker who openly criticized the official philosophy. He wrote “Xing Lun” to declare his opposition against the dominant Ch’en-wei thoughts and also offered suggestions about contemporary politics in the hope of attracting attention from the Emperor and serving the country. However, his suggestions irritated the Emperor instead and he was never promoted to an important position. After Heng Tan, Wang Chong, a thinker not in any official post, carried forward Heng’s thoughts and, based on the principle of Ji Xu Wang (meaning to criticize the untrue), lashed even more strongly against the Ch’en-wei thoughts. This thesis is an attempt to analyze Heng’s and Wang’s thoughts based on their books, “Xing Lun” and “Lun Heng.” It is found that both of them, enlightened by rationalism and spurred by the sense of mission as orthodox scholars, tried to fight against the contemporary Boshi system on the basis of Bo Tong (meaning comprehensive studies), to criticize the ridiculousness of the Ch’en-wei thoughts by manifesting the principle of Ji Xu Wang and finally to achieve the ideal of Xing Zhi (meaning to criticize the untrue and to serve the country with one’s thoughts). Both Heng and Wang cast a deep influence on the Ming-Fa thoughts at the end of East Han Dynasty and gave birth to the following Naturalism. Their importance to the development of Chinese philosophy can be clearly seen hereby.