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An Oversimplified Narrative?--The claim of China's "overcapacity" is distorting the truth of the new-energy industry

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Beijing Review 2024年第19期67卷 32-33页

作者： li wenhan 不详

Senior U.S.and European Union officials recently visiting China repeated concerns about the country's"overcapacity"during discussions with their Chinese counterparts.Prior to her latest trip to China in early April,the second in nine months,U.S.Treasury Secretary Janet Yellen said China's"overcapacity"in new industries like solar energy,electric vehicles(EVs)and lithium-ion batteries"distorts global prices"and"hurts American firms and workers,as well as firms and workers around the world."

关键词： fir simplified discussions

Semiconductors Under Siege U.S. pressure promotes Chinese self-sufficiency

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Beijing Review 2024年第27期67卷 30-31页

作者： li wenhan 不详

The sleek white boxes may be the size of small rooms,but they are the key to achieving precision on a microscopic scale.These boxes produce the world's most advanced microchips,which feature millions or even billions ... 详细信息

关键词： transistors white boxes

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A New Horizon

Beijing Review 2024年第5期67卷 28-29页

作者： li wenhan 不详

What is the contemporary significance of the concept of human rights?How to grasp its implications?Does this concept still wield influence in safeguarding individualsfundamental needs?Chinese and foreign scholars recently exchanged their ideas on and observations of human rights in China at a January 20 seminar hosted by the China International Communications Group Center for the Americas(CICG Americas)ahead of the fourth cycle of the universal periodic review of China which was launched by the UN Human Rights Council on January 23.

关键词： ahead contemporary Horizon

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Soar With the Wind

Beijing Review 2024年第16期67卷 42-43页

作者： li wenhan 不详

Fame has traditionally been the result of constant,deliberate and sometimes even painful effort,but now people are often just one video or post away from becoming a celebrity.For 4O-something Chinese farmer liu Tao,hi... 详细信息

关键词： Wind traditionally something

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FORGING CLOSER TIES

Beijing Review 2024年第20期67卷 16-17页

作者： li wenhan 不详

“Cooperation.Further cooperation.”This is what Chinese President Xi Jinping repeatedly called for during his most recent visit to three European countries-France,Serbia and Hungary.

关键词： repeatedly visit cooperation.

Getting a Close-Up University delegation explores complexity and opportunity in China-U.S.relations

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Beijing Review 2024年第9期67卷 26-27页

作者： li wenhan 不详

At minus 30 degrees Celsius,the bitter cold is more than just a number.Expose yourself to the cold for more than 10 minutes and your skin will start tingling and your eyelashes and hair will stiffen.Since 1976,the U.S.state of Iowa has held caucuses,political party meetings to select U.S.presidential candidates every four years.The tradition,an important indicator of a candidate's likely success,usually takes place in the cold months of January or February.

关键词： yourself delegation likely

Study on the resource utilization of high fluorine-containing organic waste through fluidized incineration

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Waste Disposal and Sustainable Energy 2022年第2期4卷 117-129页

作者： wenhan li Zengyi Ma Jianhua Yan Qianming Huang Xingjian Wen Zian Zhai Bochen Huang Shuang Wang Yongqiang Chen Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of ChinaChengdu610213China State Key Laboratory of Clean Energy Utilization Institute for Thermal Power EngineeringZhejiang UniversityHangzhou310027China Zhejiang Xianchuang Energy&Technology Co.Ltd Jinhua321000China

In this study,the method of fluidized incineration and water washing to recover hydrogen fluoride(HF)was proposed to dispose of high fluorine-containing organic waste.The resource utilization of the waste was investigated in a fluidized bed incinerator with a disposal capability of 10 t/d.The evolution characteristics of fluorine,operation conditions of the incineration system,absorption coefficient for HF by water washing,and HF corrosion during combustion were assessed.The results showed that HF and fluorocarbons were detected as the initial gaseous fluorides released during combustion.The release of HF could be divided into three stages,in which HF was generated from the volatilization of HF in the waste and the hydrolysis of fluorine in water-soluble salts(60–220℃),oxidative decomposition of fluorinated organic components and residual carbon(220–800℃),and hydrolysis of insoluble fluorinated inorganic minerals(800–1000℃).Fluorocarbons could be destroyed through reactions with free radicals H,O,and OH or through single-molecule decomposition.Enhancing the temperature in the furnace and increasing the content of oxygen and hydrogen in the incineration materials were conducive to reducing the generation of fluorocarbons.By sampling and analyzing the bottom slag,bag filter ash and exhaust gas during the field test,the relevant pollutant discharge could meet the national emission standards.The waste heat utilization of high-temperature flue gas and the recovery of hydrofluoric acid and hydrochloric acid were realized.In the recovery of HF by water washing,the total absorption coefficients for 1#to 4#packed absorbers were 52.38 kg/(h m^(2)),39.96 kg/(h m^(2)),5.98 kg/(h m^(2))and 3.89 kg/(h m^(2)),respectively.In the actual operation,alumina showed good corrosion resistance to high-temperature HF and could be used as bed materials or refractory materials.Low-temperature corrosion of HF occurred in the quenching heat exchanger,which was damaged after 6 months of continuous operation.High-temperature corrosion of HF o

关键词： Organic waste Fluorine Fluidized incineration Resource utilization

Spinal cord conduits for spinal cord injury regeneration

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再生工程(英文)

再生工程(英文) 2023年第1期4卷 68-80页

作者： Yanyu Ma Quanchi Chen wenhan li Haiwen Su Song li Yitong Zhu Jie Zhou Zhenhua Feng Zhen liu Saihu Mao Yong Qiu Huan Wang Zezhang Zhu Division of Spine Surgery Department of Orthopedic SurgeryAffiliated Drum Tower HospitalMedical SchoolNanjing UniversityNanjing210008China Division of Spine Surgery Department of Orthopedic SurgeryAffiliated Drum Tower Hospital Clinical College of Nanjing University of Chinese MedicineNanjing210008China Department of Nephrology Affiliated Drum Tower Hospital Clinical College of Nanjing University of Chinese MedicineNanjing210008China Division of Spine Surgery Department of Orthopedic SurgeryNanjing Drum Tower Hospital Clinical College of Nanjing Medical UniversityNanjing210008China The Eighth Affiliated Hospital Sun Yat-Sen UniversityShenzhen518033China

Spinal cord injury(SCI),which causes irreversible damage in both sensory and motor function,is considered an insurmountable challenge in the field of medicine.The previous researchers have developed many kinds of biomaterials for SCI,and spinal cord conduits(SCCs)are an important classification for bridging spinal cord tissues while performing their corresponding functions.In this review,we first describe the original sources of the different polymers that determine the properties of the different SCCs.Afterwards,we focus on the different types of crosslinking methods used for preparing SCCs.Then,various practical applications and therapeutic effects of SCCs are summarized and discussed.Finally,we conclude the existing limitations of current SCCs.We hope that this paper will serve as a further inspiration for the development of SCCs in future.

关键词： Spinal cord injury Neuron regeneration Hydrogel Spinal cord conduit Tissue engineering

Callan End to Terrorism

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Beijing Review 2024年第14期67卷 25-25页

作者： li wenhan 不详

The March 22 terrorist attack in Moscow killed at least 143 people,including three children,and wounded 180 more.The massacre erupted minutes before the Russian rock band Picnic was due to perform,with terrorists usin... 详细信息

关键词： wound killed Russian