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Chinese Journal of Polymer Science 2022年第1期40卷 21-28页

作者： Dong Liu fan Wu Zhi-Hao Shen Xing-he fan Beijing National Laboratory for Molecular Sciences Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationCenter for Soft Matter Science and EngineeringCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China

Liquid electrolytes used in lithium-ion batteries suffer from leakage,flammability,and lithium dendrites,making polymer electrolyte a potential ***,a series of ABA triblock copolymers(ABA-x)containing a mesogen-jacketed liquid crystalline polymer(MJLCP)with a polynorbornene backbone as segment A and a second polynorbornene-based polymer having poly(ethylene oxide)(PEO)side chains as segment B were synthesized through tandem ring-opening metathesis *** block copolymers can self-assemble into ordered morphologies at 200℃.After doping of lithium salts and ionic liquid(IL),ABA-x self-assembles into cylindrical *** MJLCP segments with a high glass transition temperature and a stable liquid crystalline phase serve as physical crosslinking points,which significantly improve the mechanical performance of the polymer *** ionic conductivity of ABA-x/lithium salt/IL is as high as 10-3 S·cm-1 at ambient temperature owing to the high IL uptake and the continuous phase of conducting PEO *** relationship between ionic conductivity and temperature fits the Vogel-Tamman-Fulcher(VTF)*** addition,the electrolyte films are flame retardant owing to the addition of *** polymer electrolytes with good safety and high ambient-temperature ionic conductivity developed in this work are potentially useful in solid lithium-ion batteries.

关键词： ABA triblock copolymer Polymer electrolyte Ionic conductivity Inflammability Cylindrical structure

Reflection on Full Life Cycle Green Architectural Design of Passive Priority——Taking the Award Design of China Merchants Property 2013 Green Architectural Design Competition as an Example

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Journal of Harbin Institute of Technology(New Series) 2014年第4期21卷 47-54页

作者： Zhen-he fan Yan Qiao School of Architecture and Urban Planning Beijing University of Civil Engineering and Architecture

In the China merchants property 2013 green architectural design competition,feature of this awardwinning program is the design method based on the principles of passive priority and comprehensive utilization of full life cycle. The passive priority can be achieved by building form derived from the simulation and analysis of wind environment,improvement of the building envelope insulation and the dehumidification of fresh air,the use of solar energy. The full life cycle utilization can be accomplished by the combination of exhibition and residents' leisure activities, and the integration with local cultural tradition, thereby improving energy efficiency and the utilization of the building.

关键词： full life cycle passive priority green architectural design

Au doping effects on electrical and optical properties of vanadium dioxides

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Science China(Physics,Mechanics & Astronomy) 2012年第3期55卷 409-412页

作者： YaBin Zhu fan he Jie Na Beijing Jiaotong Univ Sch Sci Beijing 100044 Peoples R China

Vanadium dioxides were fabricated on normal glass substrates using reactive radio frequency （RF） magnetron sputtering. The oxygen flow volume and annealed temperatures as growth parameters are systematically investigated. The electrical and opti- cal properties of VO2 and Au：VO2 thin films with different growth conditions are discussed. The semiconductor-metal phase transition temperature decreased by -10~C for the sample with Au doping compared to the sample without Au doping. How- ever, the optical transmittance of Au：VO2 thin films is much lower than that of bare VO2. These results show that Au doping has a marked effect on the electrical and optical properties.

关键词： VO2 thin film transmittance semiconductor-metal phase transition

Partial least square modeling of hydrolysis: analyzing the impacts of pH and acetate

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Journal of Environmental Sciences 2006年第4期18卷 805-809页

作者： Lü fan he Pin-jing SHAO Li-ming State Key Laboratory of Pollution Control and Resources Reuse Tongji University Shanghai 200092 China

pH and volatile fatty acids both might affect the further hydrolysis of particulate solid waste, which is the limiting-step of anaerobic digestion. To clarify the individual effects of pH and volatile fatty acids, batch experiments were conducted at fixed pH value （pH 5-9） with or without acetate （20 g/L）. The hydrolysis efficiencies of carbohydrate and protein were evaluated by carbon and nitrogen content of solids, amylase activity and proteinase activity. The trend of carbohydrate hydrolysis with pH was not affected by the addition of acetate, following the sequence ofpH 7〉pH 8〉pH 9〉pH 6〉pH 5; but the inhibition of acetate （20 g/L） was obvious by 10%-60 %. The evolution of residual nitrogen showed that the effect of pH on protein hydrolysis was minor, while the acetate was seriously inhibitory especially at alkali condition by 45%-100 %. The relationship between the factors （pH and acetate） and the response variables was evaluated by partial least square modeling （PLS）. The PLS analysis demonstrated that the hydrolysis of carbohydrate was both affected by pH and acetate, with pH the more important factor. Therefore, the inhibition by acetate on carbohydrate hydrolysis was mainly due to the corresponding decline of pH, but the presence of acetate species, while the acetate species was the absolutely important factor for the hydrolysis of protein.

关键词： inhibition hydrolysis pH volatile fattyacids partial least square

A comprehensive multi‐hazard risk assessment model for an urban agglomeration with multiple factors

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Journal of Safety Science and Resilience 2023年第1期4卷 43-51页

作者： Changkun Chen Dongyue Zhao fan he Fenglin Sun Institute of Disaster Prevention Science and Safety Technology Central South UniversityChangsha 410075China Anhui University of Science and Technology Huainan 232001China

To assist the Department of Emergency Management in understanding the overall risk characteristics and situation of an urban agglomeration for a reasonable risk prevention and control strategy,this study developed a comprehensive multi-hazard risk assessment model for an urban agglomeration with multiple *** proposed model includes disaster probability and disaster loss *** model evaluated four types of disaster risk in urban agglomerations:natural disasters,accidental disasters,public health incidents,and social security *** addition,a variety of factors were integrated into the model,including the socioeconomic foundation of urban agglomerations,the oligopoly effect of core cities,historical disaster losses,the effect of disaster chains,the ability of disaster prevention and mitigation,and intercity coordinated rescue ***,the risk assessment model was applied to the Beijing-Tianjin-hebei urban *** assessment results were compared to the distribution of the new coronavirus pneumonia epidemic in the target urban *** results showed that after analyzing the risk characteristics and evaluating the risk levels,the model not only showed the comprehensive risk levels and distribution of urban agglomerations but also revealed the high-risk areas and the key points of risk prevention and *** importantly,the results obtained through the model can facilitate the strategic planning of disaster prevention and mitigation for urban agglomerations.

关键词： Urban agglomeration Risk assessment Multi-hazard Multifactor Risk prevention and control

Influence of RMB Cross-border Settlement on the Chinese Economy

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China & World Economy 2016年第1期24卷 104-122页

作者： Qiyuan Xu fan he Chief Economist Caixin Insight Group and Senior Economic Fellow Institute for New Economic Thinking

In 2014, the amount of RMB cross-border settlement had reached RMB7.6tn. It is important to evaluate the potential influence of RMB internationalization on China＇s macroeconomy. In the present study, a framework that includes monetary supply and demand was created to analyze the influences of RMB cross-border settlement on China＇s domestic interest rate, asset price and foreign exchange reserves. It is found that RMB settlement in different BOP items leads to very different effects on China＇s real economy and the financial market. Based on the analysis, we provide a framework of the policy priorities for RMB internationalization, with the RMB cross-border settlement items divided into three groups with different priorities. Meanwhile, to support RMB internationalization, exchange rate reforms should be adopted as a priority and a prudent attitude maintained regarding capital account liberalization.

关键词： Chinese economy influence monetary policy RMB internationalization

Rheological Behaviors of a Series of Hyperbranched Polyethers

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Chinese Journal of Polymer Science 2015年第11期33卷 1574-1585页

作者： Xue-pei Miao Yan-shuang Guo Li-fan he 孟焱李效玉 Key Laboratory of Carbon Fiber and Functional Polymers Ministry of Education Beijing University of Chemical Technology TA Instruments-Waters LLC (Beijing) 9/F Tongniu International Manson State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology

Hyperbranched polyethers with different structures and molecular weights（MW） were synthesized using the A2＋B3 approach by varying monomer ratio, A2 structure, and reaction time. Effects of backbone structure and MW on melt rheological behaviors were investigated by both small amplitude oscillatory shear and steady shear measurements. Master curves were constructed using the time-temperature superposition principle and compared. In the reduced frequency range covered, lg G″-lg（ω·aT） always show a slope of 1.0, suggesting a terminal zone behavior; in contrast, unexpected step changes or plateaus are observed on lg G′ master curves. Effects of backbone structure and MW on master curves were discussed. The Cox-Merz rule was tested at different temperatures and was found to be applicable when flow instability was absent.

关键词： Hyperbranched polyethers Rheology Time-temperature superposition

China's Energy Strategy in the Twenty-first Century

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China & World Economy 2006年第2期14卷 93-104页

作者： fan he Donghai Qin Assistant Director Institute of World Economics and Politics Chinese Academy of Social Sciences Beijing China. PhD Candidate Graduate School Chinese Academy of Social Sciences Beijing China.

China＇s energy demand and energy imports have increased substantially in recent 5 years and will continue to grow in future. Increasing dependency on the world market and the tension between energy supply and demand clearly show that energy is becoming a major constraint for China＇s future economic development. We introduce the background of China＇s energy demand and supply in this paper and discuss China＇s energy strategy in the twentyfirst century, focusing on growth, energy security and environmental sustainability.

关键词： Chinese economy energy security energy strategy

China's Sovereign Wealth Fund:Weakness and Challenges

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China & World Economy 2009年第1期17卷 101-122页

作者： Ming Zhang fan he Assistant Professor Institute of World Economics and Politics Chinese Academy of Social Sciences Beijing China Associate Professor Institute of World Economics and Politics Chinese Academy of Social Sciences Beijing China

The establishment of sovereign wealth funds in large developing countries has generated hot debate among participants in the international financial market. When accumulated foreign exchange reserves surpass a sufficient and an appropriate level, the costs, risks and impacts of holding reserves on the macroeconomy of a country need to be considered. The Chinese Government established China Investment Corporation （ CIC） in 2007 to diversify its investment of foreign reserves and to raise investment income. However, because of certain conflicts of interest and institution-design caveats, CIC possesses some internal weakness, including a vague orientation, mixed investment strategies and an inefficient bureaucratic style. Although the subprime crisis has softened certain regulations and lessened rejection by the USA of ClC potential investments, the increased volatility and uncertainty of the market means that CIC is facing some new challenges in terms of its investment decisions. Moreover, CIC is competing with other Chinese investment institutions for injections of funds from the Chinese Government.

关键词： China Investment Corporation external challenge foreign exchange reserve management internal weakness sovereign wealth fund

Is Asian Currency Unit Attractive to East Asian Economies?

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China & World Economy 2007年第1期15卷 62-76页

作者： Bin Zhang fan he Associate Research Fellow Institute of World Economics and Politics Chinese Academy of Social Sciences （CASS） Beijing China Associate Research Fellow Institute of World Economics and Politics CASS Beijing China

Pegging the RMB exchange rate to the Asian short term, been proved a better solution than currency unit （A CU） has not, at least in the pegging to the US dollar or pegging to a G- 3 （US$, Japaneseyen and euro） currency basket. Although the Asian currency unit can help Asian economies to keep the relative price of regional currencies stable, the cost of joining a formal regional monetary cooperation is the relinquishment of the autonomy of their domestic policies. Asian monetary cooperation needs to provide more potential benefits if it is to attract Asian economies. We argue that Asian monetary cooperation should be designed to solve the problem of regional trade imbalance, and regional exchange rate policy coordination should be adopted as the first step towards exchange rate cooperation.

关键词： Asian currency unit East Asia exchange rate policy coordination RMB