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Beyond Conventional Degradation:Catalytic Solutions for Polyolefin Upcycling

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CCS Chemistry 2024年第2期6卷 313-333页

作者： Lan Gan Zhongwen Dong haofeng Xu Huidong Lv Guixia Liu Fan Zhang Zheng Huang State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai 200032 School of Chemistry and Material Sciences Hangzhou Institute of Advanced StudyHangzhou 310024 National Engineering Laboratory of Eco-Friendly Polymeric Materials(Sichuan) College of ChemistrySichuan UniversityChengdu 610064

Polyolefins(POs,i.e.,polyethylenes,ethylene/α-olefin copolymers,and polypropylenes)are the most ubiquitous synthetic macromolecular materials in modern life.Their widespread use and low recovery rate after extensive usage have caused significant resource waste and environmental concerns.Chemical recycling of POs provides an efficient approach to unravelling the polymer chain to various chemicals.However,conventional chemical recycling methods,including pyrolysis,hydrocracking,and oxidation,require high-energy input(typically>500℃)and/or the use of environmentally unfriendly chemicals,leading to complex product distribution.In this minireview,based on recent representative works,we summarize and highlight catalytic strategies addressing these issues in PO recycling from two perspectives:(1)employing advanced catalysts or technique designs to overcome the challenges in conventional chemical deconstruction approaches;and(2)developing novel tandem/cascade catalytic systems for highly selective PO upcycling under relatively mild conditions.We hope that this minireview will help researchers better understand the state of the art of PO chemical recycling and inspire more innovative and efficient ideas for this fast-developing field.

关键词： catalytic strategies chemical recycling deconstruction polyolefins upcycling

Preliminary report of coseismic surface rupture(part)of Türkiye's M_(W)7.8 earthquake by remote sensing interpretation

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Earthquake Research Advances 2024年第1期4卷 4-13页

作者： Yali Guo haofeng Li Peng Liang Renwei Xiong Chaozhong Hu Yueren Xu Key Laboratory of Earthquake Prediction Institute of Earthquake ForecastingChina Earthquake AdministrationBeijing100036China

Both M_(W) 7.8 and M_(W) 7.5 earthquakes occurred in southeastern Türkiye on February 6,2023,resulting in numerous buildings collapsing and serious casualties.Understanding the distribution of coseismic surface ruptures and secondary disasters surrounding the epicentral area is important for post-earthquake emergency and disaster assessments.High-resolution Maxar and GF-2 satellite data were used after the events to extract the location of the rupture surrounding the first epicentral area.The results show that the length of the interpreted surface rupture zone(part of)is approximately 75 km,with a coseismic sinistral dislocation of 2-3 m near the epicenter;however,this reduced to zero at the tip of the southwest section of the East Anatolia Fault Zone.Moreover,dense soil liquefaction pits were triggered along the rupture trace.These events are in the western region of the Eurasian Seismic Belt and result from the subduction and collision of the Arabian and African Plates toward the Eurasian Plate.The western region of the Chinese mainland and its adjacent areas are in the eastern section of the Eurasian Seismic Belt,where seismic activity is controlled by the collision of the Indian and Eurasian Plates.Both China and Türkiye have independent tectonic histories.

关键词： 2023 Türkiye M_(w)7.8 earthquake Coseismic surface rupture East anatolian fault zone Eurasian seismic zone Remote sensing interpretation

Analysis of a Type Ⅱ Snowstorm Process in the Early Spring of 2022 in Ulanqab

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Meteorological and Environmental Research 2024年第2期15卷 4-9页

作者： haofeng GUO Ulanqab Meteorological Bureau Ulanqab 012000China

Based on the observation data of meteorological stations,Doppler radar observation data of Ulanqab City,and ERA-5 reanalysis data,a snowstorm process in Ulanqab City from March 17 to 18,2022 was analyzed.The results show that this was a type Ⅱ snowstorm process generated under the joint influence of upper trough and ground low inverted trough and frontal cyclone.The main period of snowfall can be divided into two time stages,and the total snowfall was more in the south and less in the north,which was consistent with that of average specific humidity field.Water vapor conditions provided by strong water vapor transport and convergence,strong upward movement shown by large vertical velocity field,and the suction action of high-and low-layer divergence and convergence were the reasons for the hourly heavy snowfall on the 18^(th).During the process,radar echoes were mainly sheet-shaped,and composite reflectivity was 15-25 dBZ in most areas.The zero speed line in the first period was positively"S"-shaped,and there was warm advection and southwest wind.On the morning of the 18^(th),after the cold front transited the city,Ulanqab City was gradually controlled by northwest wind,and the snow tended to end.

关键词： TypeⅡsnowstorm Influencing system Diagnostic analysis Radar echo characteristics

Simultaneously detecting transversal and longitudinal displacement with the dielectric metasurface

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Chinese Optics Letters 2024年第2期22卷 109-113页

作者：张植宇匡程辉臧昊峰鲁拥华王沛 Department of Optics and Optical Engineering University of Science and Technology of ChinaHefei 230026China Advanced Laser Technology Laboratory of Anhui Province Hefei 230026China

The compact,sensitive,and multidimensional displacement measurement device plays a crucial role in semiconductor manufacture and high-resolution optical imaging.The metasurface offers a promising solution to develop high-precision displacement metrology.In this work,we proposed and experimentally demonstrated a two-dimensional displacement(XZ)measurement device by a dielectric metasurface.Both transversal and longitudinal displacements of the metasurface can be obtained by the analysis of the interference optical intensity that is generated by the deflected light beams while the metasurface is under linearly polarized incidence.We experimentally demonstrated that displacements down to 5.4 nm along the x-axis and 0.12μm along the z-axis can be resolved with a 900μm×900μm metasurface.Our work opens up new possibilities to develop a compact high-precision multidimensional displacement sensor.

关键词： metasurface transversal and longitudinal displacement measurement

Nasal vaccination of triple-RBD scaffold protein with flagellin elicits long-term protection against SARS-CoV-2 variants including JN.1

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Signal Transduction and Targeted Therapy 2024年第5期9卷 2312-2323页

作者： Xian Li Mengxin Xu Jingyi Yang Li Zhou Lin Liu Min Li Shasha wang Mei-Qin Liu Zhixiang Huang Zhen Zhang Shuning Liu Yunqi Hu haofeng Lin Bowen Liu Ying Sun Qingguo Wu Zheng-Li Shi Ke Lan Yu Chen Huimin Yan Yao-Qing Chen Wuhan Institute of Virology Chinese Academy of SciencesWuhanChina Vaccine and Immunology Research Center Translational Medical Research InstituteShanghai Public Health Clinical CenterFudan UniversityShanghaiChina University of Chinese Academy of Sciences BeijingChina School of Public Health(Shenzhen) Shenzhen Campus of Sun Yat-sen UniversityShenzhenGuangdongChina State Key Laboratory of Virology Modern Virology Research CenterCollege of Life SciencesWuhan UniversityWuhanChina Aerosol Bio-Tech(Suzhou)Co. LTDSuzhouJiangsuChina National Medical Products Administration Key Laboratory for Quality Monitoring and Evaluation of Vaccines and Biological Products Sun Yat-sen UniversityGuanzhouChina

Developing a mucosal vaccine against SARS-CoV-2 is critical for combatting the epidemic.Here,we investigated long-term immune responses and protection against SARS-CoV-2 for the intranasal vaccination of a triple receptor-binding domain(RBD)scaffold protein(3R-NC)adjuvanted with a flagellin protein(KFD)(3R-NC+KFDi.n).In mice,the vaccination elicited RBD-specific broad-neutralizing antibody responses in both serum and mucosal sites sustained at high level over a year.This long-lasting humoral immunity was correlated with the presence of long-lived RBD-specific IgG-and IgA-producing plasma cells,alongside the Th17 and Tfh17-biased T-cell responses driven by the KFD adjuvant.Based upon these preclinical findings,an open labeled clinical trial was conducted in individuals who had been primed with the inactivated SARS-CoV-2(IAV)vaccine.With a favorable safety profile,the 3R-NC+KFDi.n boost elicited enduring broad-neutralizing IgG in plasma and IgA in salivary secretions.To meet the challenge of frequently emerged variants,we further designed an updated triple-RBD scaffold protein with mutated RBD combinations,which can induce adaptable antibody responses to neutralize the newly emerging variants,including JN.1.Our findings highlight the potential of the KFD-adjuvanted triple-RBD scaffold protein is a promising prototype for the development of a mucosal vaccine against SARS-CoV-2 infection.

关键词： vaccination vaccine sustained

Recent progress in the discovery of inhibitors targeting coronavirus proteases

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Virologica Sinica 2016年第1期31卷 24-30页

作者： haofeng wang Song Xue Haitao Yang Cheng Chen School of Life Sciences Tianjin University

Coronaviruses(CoVs) can cause highly prevalent diseases in humans and animals. The fatal outbreak of severe acute respiratory syndrome(SARS) and Middle East respiratory syndrome(MERS) highlights the threat posed by this unique virus subfamily. However, no specific drugs have been approved to treat CoV-associated diseases to date. The CoV proteases, which play pivotal roles in viral gene expression and replication through a highly complex cascade involving the proteolytic processing of replicase polyproteins, are attractive targets for drug design. This review summarizes the recent advances in biological and structural studies, together with the development of inhibitors targeting CoV proteases, particularly main proteases(M^(pro)s), which could help develop effective treatments to prevent CoV infection.

关键词：病毒学临床医学药物学

Crystal structure of monkeypox H1 phosphatase,an antiviral drug target

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Protein & Cell 2023年第6期14卷 469-472页

作者： Wen Cui Haojun Huang Yinkai Duan Zhi Luo haofeng wang Tenan Zhang Henry C Nguyen Wei Shen Dan Su Xi Li Xiaoyun Ji Haitao Yang Wei wang Institute of Life Sciences Chongqing Medical UniversityChongqing 400016China Shanghai Institute for Advanced Immunochemical Studies and School of Life Science and Technology ShanghaiTech UniversityShanghai 201210China State Key Laboratory of Biotherapy and Cancer Center West China HospitalSichuan University and Collaborative Innovation Center of BiotherapyChengdu 610064China State Key Laboratory of Pharmaceutical Biotechnology Department of Biotechnology and Pharmaceutical SciencesSchool of Life SciencesNanjing UniversityNanjing 210023China Shanghai Clinical Research and Trial Center Shanghai 201210China Tianjin International Joint Academy of Biotechnology and Medicine Tianjin 300450China

Dear Editor,Since its appearance in May 2022,monkeypox has spread to>100 countries and afflicted tens of thousands of people.Individuals infected with monkeypox present a fever,an extensive characteristic rash,and usually swollen lymph nodes(Chatterjee et al.,2022).The number of confirmed cases worldwide continues to grow at a rapid rate,but the treatment to this highly infectious viral disease is still very limited.Identification of new targeted-therapies will be crucial to control of this emerging public health threat.

关键词： monkey Crystal

Crystal structure of SARS-CoV-2 main protease in complex with protease inhibitor PF-07321332

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Protein & Cell 2022年第9期13卷 689-693页

作者： Yao Zhao Chao Fang Qi Zhang Ruxue Zhang Xiangbo Zhao Yinkai Duan haofeng wang Yan Zhu Lu Feng Jinyi Zhao Maolin Shao Xiuna Yang Leike Zhang Chao Peng Kailin Yang Dawei Ma Zihe Rao Haitao Yang Shanghai Institute for Advanced Immunochemical Studies and School of Life Science and Technology ShanghaiTech UniversityShanghai 201210China State Key Laboratory of Bioorganic&Natural Products Chemistry Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai 200032China CAS Center for Excellence in Molecular Cell Science Shanghai Institute of Biochemistry and Cell BiologyChinese Academy of SciencesShanghai 200031China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Virology Wuhan Institute of VirologyCenter for Biosafety Mega-ScienceChinese Academy of SciencesWuhan 430071China National Facility for Protein Science in Shanghai Zhangjiang LabShanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201210China Taussig Cancer Center Cleveland ClinicClevelandOH 44195USA Laboratory of Structural Biology School of Life Sciences and School of MedicineTsinghua UniversityBeijing 100091China State Key Laboratory of Medicinal Chemical Biology Frontiers Science Center for Cell ResponseCollege of Life SciencesNankai Universityand Tianjin Key Laboratory of Protein SciencesTianjin 300071China

Dear Editor,Since December 2019,the pandemic of coronavirus disease 2019(COVID-19)has taken a heavy toll on global health,creating an urgent need to develop effective strategies for prevention and treatment.The etiological agent,known as severe acute respiratory syndrome coronavirus 2(SARSCoV-2),has infected nearly 229.2 million people worldwide with more than 4.7 million deaths as of September 15,2021.Older age and preexisting health conditions are associated with worse clinical prognosis including higher mortality rates(Zhou et al.,2020).The global race to combat this pandemic has led to rapid deployment of numerous effective vaccines against SARS-CoV-2(Tregoning et al.,2021).However,the emergence of viral variants,including the Delta variant(B.1.617.2),compromised vaccine effectiveness with resurgence of SARS-CoV-2 infection among highly vaccinated population(Keehner et al.,2021).Therefore,development of therapeutics against the more conserved viral targets would be essential to contain the spread of COVID-19 and reduce mortality.

关键词： mortality prevention Crystal

《2023年美国肝病学会实践指南:慢加急性肝衰竭和肝硬化危重症患者管理》摘译

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临床肝胆病杂志 2024年第4期40卷 679-681页

作者：熊号峰孙丽莹首都医科大学附属北京友谊医院肝病中心重症肝病科北京100050

美国肝病学会专家小组于2023年11月9日在Hepatology发表了慢加急性肝衰竭(ACLF)和肝硬化危重症患者管理实践指南。该指南对ACLF的定义、预测模型、肝硬化合并ACLF和/或危重症患者脏器功能衰竭管理等进行了详细地阐述,本文对其要点进行... 详细信息

美国肝病学会专家小组于2023年11月9日在Hepatology发表了慢加急性肝衰竭(ACLF)和肝硬化危重症患者管理实践指南。该指南对ACLF的定义、预测模型、肝硬化合并ACLF和/或危重症患者脏器功能衰竭管理等进行了详细地阐述,本文对其要点进行摘译。

关键词：慢加急性肝功能衰竭肝硬化治疗学美国