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Efficient photocatalytic reduction of CO2 to formate by a molecular noble metal-free system

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Science China Chemistry 2025年第1期68卷 152-156页

作者： Lihua Zhang Lingjing chen Huatian shi Yue Wei Gui chen Tai-Chu Lau School of Environment and Civil Engineering Research Center for Eco-environmental Engineering Dongguan University of Technology Department of Chemistry and Institute of Molecular Functional Materials City University of Hong Kong

Reducing CO2to carbon-neutral solar fuels can not only alleviate the energy demand but also mitigate the greenhouse *** present,developing an efficient non-noble metal photo/electrocatalytic system for converting CO2to a specific product beyond CO is still a big ***,we report a new cobalt complex bearing 2,2′-bi-1,10-phenanthroline ligand that can photocatalytically reduce CO2to formate （HCOO-）.Turnover number （TON） for HCOO-up to 677 with 99%selectivity can be achieved using organic dyes purpurin as photosensitizer and 1,3-dimethyl-2-phenyl-2,3-dihydro-1H-benzo[d]imidazole （BIH） as sacrificial reductant in a CO2-saturated NMP/TEA （v/v,3:1） solution under visible light *** potential electrolysis at-1.41 V （***/Ag Cl） in the presence of 12 m M Et3NHBF4also produced HCOO-with Faradaic efficiency of 39%.Spectroscopic and electrochemical studies suggest that a[CoI-H]species is the key intermediate for CO2reduction.

关键词： photocatalysis noble metal-free CO2 reduction formate cobalt hydride

Low-temperature chlorination roasting technology for the simultaneous recovery of valuable metals from spent LiCoO_(2)cathode material

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 80-91页

作者： Junjie shi Changle Hou Jingjing Dong Dong chen Jianzhong Li Key Laboratory for Ecological Metallurgy of Multimetallic Mineral(Ministry of Education) Northeastern UniversityShenyang 110819China School of Metallurgy Northeastern UniversityShenyang 110819China

With the continuous increase in the disposal volume of spent lithium-ion batteries(LIBs),properly recycling spent LIBs has become essential for the advancement of the circular *** study presents a systematic analysis of the chlorination roasting kinetics and proposes a new two-step chlorination roasting process that integrates thermodynamics for the recycling of LIB cathode *** activation energy for the chloride reaction was 88.41 kJ/mol according to thermogravimetric analysis–derivative thermogravimetry data obtained by using model-free,model-fitting,and Z(α)function(αis conversion rate).Results indicated that the reaction was dominated by the first-order(F1)model when the conversion rate was less than or equal to 0.5 and shifted to the second-order(F2)model when the conversion rate exceeded *** conditions were determined by thoroughly investigating the effects of roasting temperature,roasting time,and the mass ratio of NH_(4)Cl to LiCoO_(2).Under the optimal conditions,namely 400℃,20 min,and NH_(4)Cl/LiCoO_(2)mass ratio of 3:1,the leaching efficiency of Li and Co reached 99.43% and 99.05%,*** of the roasted products revealed that valuable metals in LiCoO_(2)transformed into CoCl_(2) and ***,the reaction mechanism was elucidated,providing insights for the establishment of a novel low-temperature chlorination roasting technology based on a crystal structure *** technology can guide the development of LIB recycling processes with low energy consumption,low secondary pollution,high recovery efficiency,and high added value.

关键词： spent lithium-ion battery thermodynamics chlorination roasting kinetics circular economy

金融摩擦与新兴经济体特征对中国货币政策传导的影响

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当代财经 2017年第7期 58-70页

作者：陈师郑直王颖西南财经大学经济学院四川成都611130 西南财经大学经济与管理研究院四川成都611130

通过建立一个具备货币替代、金融加述器和负债美元化的中型开放经济动态随机一般均衡模型,利用中国宏观季度数据进行贝叶斯估计,结果表明:中国的货币政策及汇率制度可由一个有管理的浮动汇率制形式的货币政策规则加以经验描述,货币政策... 详细信息

通过建立一个具备货币替代、金融加述器和负债美元化的中型开放经济动态随机一般均衡模型,利用中国宏观季度数据进行贝叶斯估计,结果表明:中国的货币政策及汇率制度可由一个有管理的浮动汇率制形式的货币政策规则加以经验描述,货币政策的传导受到金融摩擦和新兴市场经济体特征因素的影响;并且,金融摩擦和新兴市场经济体特征会造成更为积极的货币政策干预,弱化货币政策在稳定经济方面的表现,并带来更大的福利损失。因此,应该探索一系列更为灵活的外汇政策,加快汇率市场化改革,逐步开放国内金融市场。

关键词：金融加速器货币替代负债美元化最优货币政策

Highly Efficient Diastereoselective Synthesis of Tetrahydro-isoquinoline-3- carboxylate Ester Analogs from L-DOPA

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有机化学 2003年第Z1期23卷 335-335页

作者： WANG Ye LIU Zhan-Zhu chen shi-zhi LIANG Xiao-Tian Institute of Materia Medica Peking Union Medical College & Chinese Academy of Medical Sciences Beijing 100050 Institute of Materia Medica Peking Union Medical College & Chinese Academy of Medical Sciences Beijing 100050 Institute of Materia Medica Peking Union Medical College & Chinese Academy of Medical Sciences Beijing 100050 Institute of Materia Medica Peking Union Medical College & Chinese Academy of Medical Sciences Beijing 100050

　　Tetrahydroisoquinoline-3-carboxylate esters are an important motif of naturally occurring bioactive alkaloids and pharmacophores. They are generally regarded as neurotoxic compounds and are putatively involved in a variety of pathologic conditions of central nervous system, including alcoholism, phenylketonuria, and neurodegenerative disorders such as Parkinson's disease.……

关键词： neurodegenerative disorders central nervous system

Stereospecific Synthesis of the Skeleton of the Antitumor Marine Natural Product Et-743

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有机化学 2003年第Z1期23卷 336-336页

作者： LIU Zhan-Zhu TANG Ye-Feng WANG Ye chen shi-zhi Institute of Materia Medica Peking Union Medical College & Chinese Academy of Medical Scicnces Beijing 100050 Institute of Materia Medica Peking Union Medical College & Chinese Academy of Medical Scicnces Beijing 100050 Institute of Materia Medica Peking Union Medical College & Chinese Academy of Medical Scicnces Beijing 100050 Institute of Materia Medica Peking Union Medical College & Chinese Academy of Medical Scicnces Beijing 100050

　　Ecteinascidin 743 (Et-743) is an exceedingly potent antitumor agent isolated from the marine tunicate Ecteinascidia turbinate. As its structurally simplified version, Phthalascidin was found to retain the cytotoxicity of the natural product. Their novel structures, impressive biological activities and difficult availabilities conspire to render the attractive targets for total synthesis.……

关键词： biological activities total synthesis natural product antitumor agent

Tranylcypromine upregulates Sestrin 2 expression to ameliorate NLRP3-related noise-induced hearing loss

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Neural Regeneration Research 2025年第5期20卷 1483-1494页

作者： Xihang chen zhifeng chen Menghua Li Weiwei Guo Shuolong Yuan Liangwei Xu Chang Lin Xi shi Wei chen shiming Yang Senior Department of Otolaryngology Head and Neck Surgery Chinese PLA General HospitalChinese PLA Medical SchoolBeijingChina State Key Laboratory of Hearing and Balance Science BeijingChina National Clinical Research Center for Otolaryngologic Diseases BeijingChina Key Laboratory of Hearing Science Ministry of EducationBeijingChina Beijing Key Laboratory of Hearing Impairment Prevention and Treatment BeijingChina Department of Otorhinolaryngology Head and Neck Surgery The First Affiliated Hospital of Fujian Medical UniversityFuzhouFujian ProvinceChina Department of Otolaryngology Head and Neck Surgery The 940th Hospital of Joint Logistics Support Force of Chinese PLALanzhouGansu ProvinceChina Key Laboratory of Tropical Biological Resources of Ministry of Education School of Pharmaceutical SciencesHainan UniversityHaikouHainan ProvinceChina Academician Workstation of Hainan University School of Pharmaceutical SciencesYazhou BaySanyaHainan ProvinceChina

Noise-induced hearing loss is the primary non-genetic factor contributing to auditory ***,there are currently no effective pharmacological interventions for patients with noise-induced hearing ***,we present evidence suggesting that the lysine-specific demethylase 1 inhibitor–tranylcypromine is an otoprotective agent that could be used to treat noise-induced hearing loss,and elucidate its underlying regulatory *** established a mouse model of permanent threshold shift hearing loss by exposing the mice to white broadband noise at a sound pressure level of 120 d B for 4 *** found that tranylcypromine treatment led to the upregulation of Sestrin2(SESN2)and activation of the autophagy markers light chain 3B and lysosome-associated membrane glycoprotein 1 in the cochleae of mice treated with *** noise exposure group treated with tranylcypromine showed significantly lower average auditory brainstem response hearing thresholds at click,4,8,and 16 k Hz frequencies compared with the noise exposure group treated with *** findings indicate that tranylcypromine treatment resulted in increased SESN2,light chain 3B,and lysosome-associated membrane glycoprotein 1 expression after noise exposure,leading to a reduction in levels of 4-hydroxynonenal and cleaved caspase-3,thereby reducing noise-induced hair cell ***,immunoblot analysis demonstrated that treatment with tranylcypromine upregulated SESN2 expression via the autophagy *** treatment also reduced the production of NOD-like receptor family pyrin domaincontaining 3(NLRP3)*** conclusion,our results showed that tranylcypromine treatment ameliorated cochlear inflammation by promoting the expression of SESN2,which induced autophagy,thereby restricting NLRP3-related inflammasome signaling,alleviating cochlear hair cell loss,and protecting hearing *** findings suggest that inhibiting lysine-specific demethylase 1 is a

关键词： 4-hydroxynonenal apoptosis autophagy cleaved caspase-3 inflammation NOD-like receptor family pyrin domain-containing 3(NLRP3) noise-induced hearing loss oxidative stress Sestrin2 tranylcypromine

基于数据驱动加速的随机车流-桥梁耦合振动分析方法

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工程力学 2023年第8期40卷 213-223页

作者：杨干陈适之钟强铭王俊峰蒋鑫刘时雨长安大学公路学院西安710064 重庆城投基础设施建设有限公司重庆400023 西安长安大学工程设计研究院有限公司西安710064

面向随机车流的公路桥梁安全评估往往需要大量的车-桥耦合振动分析,然而,目前相关既有模拟方法运算效率有限,致使完成评估所需的分析耗时过久,无法及时提供评估结果。为此,该文以传统车-桥耦合振动分析理论为基础,提出了一种基于双向长... 详细信息

面向随机车流的公路桥梁安全评估往往需要大量的车-桥耦合振动分析,然而,目前相关既有模拟方法运算效率有限,致使完成评估所需的分析耗时过久,无法及时提供评估结果。为此,该文以传统车-桥耦合振动分析理论为基础,提出了一种基于双向长短期记忆(Bi-directional Long Short-Term Memory,BiLSTM)算法加速的随机车流-桥梁耦合振动分析方法。该方法可以从初期桥梁响应时程快速映射出对应的后序响应,相较传统方法压缩了部分迭代求解周期,从而提高整体计算效率。随后,选取四座常见的桥梁作为分析对象,同时针对性地提出加权平均绝对百分比误差(WMAPE)、加权决定系数(WR^(2))等改进评价指标,并以传统迭代法为参照,分析了该方法的精度、鲁棒性以及计算效率。分析结果显示:该文提出的方法有较好的鲁棒性,在不同随机车流密度、不同路面粗糙度等工况下对桥梁的弯矩、剪力、挠度等响应都具有较高的分析精度;与传统方法相比,该方法可以在WMAPE小于3.2%、峰值绝对误差(PAE)小于2.9%以及WR^(2)大于0.98的情况下,将随机车流下车-桥耦合振动响应的计算效率平均提高37.98%。这表明该方法可以在保证精度的前提下,有效提升随机车流-桥梁耦合振动分析效率,具备应用于桥梁结构快速分析、评估的潜力。

关键词：桥梁工程车-桥耦合模拟 BiLSTM模型随机车流桥梁评估

High Fe‑Loading Single‑Atom Catalyst Boosts ROS Production by Density Effect for Efficient Antibacterial Therapy

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Nano-Micro Letters 2025年第2期17卷 187-203页

作者： Si chen Fang Huang Lijie Mao zhimin Zhang Han Lin Qixin Yan Xiangyu Lu Jianlin shi Department of Cardiology Shanghai Tenth People’s HospitalSchool of MedicineTongji UniversityShanghai 200092People’s Republic of China Shanghai Institute of Ceramics Chinese Academy of SciencesShanghai 200050People’s Republic of China Shanghai Frontiers Science Center of Nanocatalytic Medicine School of MedicineTongji UniversityShanghai 200092People’s Republic of China

The current single-atom catalysts(SACs)for medicine still suffer from the limited active site ***,we develop a synthetic method capable of increasing both the metal loading and mass-specific activity of SACs by exchanging zinc with *** constructed iron SACs(h^(3)-FNC)with a high metal loading of 6.27 wt%and an optimized adjacent Fe distance of~4 A exhibit excellent oxidase-like catalytic performance without significant activity decay after being stored for six months and promising antibacterial ***,a“density effect”has been found at a high-enough metal doping amount,at which individual active sites become close enough to interact with each other and alter the electronic structure,resulting in significantly boosted intrinsic activity of single-atomic iron sites in h^(3)-FNCs by 2.3 times compared to low-and medium-loading ***,the overall catalytic activity of h^(3)-FNC is highly improved,with mass activity and metal mass-specific activity that are,respectively,66 and 315 times higher than those of commercial Pt/*** addition,h^(3)-FNCs demonstrate efficiently enhanced capability in catalyzing oxygen reduction into superoxide anion(O_(2)·^(−))and glutathione(GSH)*** in vitro and in vivo assays demonstrate the superior antibacterial efficacy of h^(3)-FNCs in promoting wound *** work presents an intriguing activity-enhancement effect in catalysts and exhibits impressive therapeutic efficacy in combating bacterial infections.

关键词： Nanocatalytic medicine Single-atom catalysts Reactive oxygen species(ROS) High metal loading Oxidase catalysis

旧工业区更新的城市设计研究——以德国杜伊斯堡内港为例

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内蒙古师范大学学报（自然科学汉文版） 2017年第2期46卷 230-235页

作者：陈可石杨志德北京大学深圳研究生院城市规划与设计学院广东深圳518055

从城市设计的角度出发,对德国杜伊斯堡市内港成功的旧工业区更新实践进行研究,通过对其城市设计中空间形态、功能、交通、环境、公共空间、建筑方面更新措施的阐述,归纳出其城市设计更新的经验:保持空间形态完整;功能规划混合多样;构建... 详细信息

从城市设计的角度出发,对德国杜伊斯堡市内港成功的旧工业区更新实践进行研究,通过对其城市设计中空间形态、功能、交通、环境、公共空间、建筑方面更新措施的阐述,归纳出其城市设计更新的经验:保持空间形态完整;功能规划混合多样;构建绿色可持续的环境;完善公共交通系统,倡导绿色交通;延续原有建筑文脉;设计人性化的公共空间.

关键词：旧工业区旧工业区更新杜伊斯堡内港城市设计