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Visible light promoted aerobic selective photo-oxidation of cyclohexene on LaCo_(x)Cu_(1−x)O_(3) catalyst

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Nano Research 2024年第8期17卷 6940-6950页

作者： Xu Guo Liru Song Wenyu Wang Fengfeng Li Minh Ngoc Ha Jun Tang qiang ling Ping Cui Qingping Ke College of Chemistry and Chemical Engineering Anhui University of TechnologyMaanshan 243000China VNU Key Laboratory of Advanced Material for Green Growth Faculty of ChemistryUniversity of ScienceVietnam National UniversityHanoi 100000Vietnam

Heterogeneously catalyzed liquid oxidation of olefins with O_(2) provides an alternative way for synthesizing high-value added ***,we report a straightforward urea-redox and sol-gel process for synthesizing LaCo_(x)Cu_(1−x)O_(3) for aerobic photooxidation of *** research highlights a marked increase in the proportions of Co^(2+) and Cu+species in a low chemical state,as well as enhanced visible light absorption through this *** investigations suggest that the catalytic process,particularly with LaCo_(0.7)Cu_(0.3)O_(3),involves a radical pathway mediated by reactive oxygen *** presence of Cu+/Co^(2+) species and surface oxygen vacancies is proposed to boost O_(2) adsorption and activation on the catalyst,facilitating the formation of ***,Cu^(2+)/Co^(3+) species are thought to aid in generating cyclohexenederived radical *** efficient aerobic oxidation of cyclohexene on LaCo_(0.7)Cu_(0.3)O_(3) catalyst relies on the formation of reactive oxygen species and carbon radicals,facilitated by its strong visible light *** achieves a cyclohexene conversion of 89.4% and selectivity to cyclohex-2-ene-1-one of 72.2%,along with stable recyclability after six *** creation of nano-structured LaCo_(x)Cu_(1−x)O_(3) through the urea-redox and sol-gel process offers a promising avenue for the development of highly efficient catalysts for the aerobic photo-oxidation of cyclohexene to cyclohex-2-ene-1-one in the future.

关键词： perovskite oxide photocatalysis oxidation cyclohexene LaCoCuO_(3) cyclohex-2-ene-1-one

Transient breathing dynamics during extinction of dissipative solitons in mode‑locked fiber lasers

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Frontiers of Optoelectronics 2024年第1期17卷 9-19页

作者： Zichuan Yuan Si Luo Ke Dai Xiankun Yao Chenning Tao qiang ling Yusheng Zhang Zuguang Guan Daru Chen Yudong Cui Hangzhou Institute of Advanced Studies Zhejiang Normal UniversityHangzhou 311231China State Key Laboratory of Modern Optical Instrumentation College of Optical Science and EngineeringZhejiang UniversityHangzhou 310027China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China Key Laboratory of Optical Information Detection and Display Technology of Zhejiang Zhejiang Normal UniversityJinhua 321004China School of Physics Northwest UniversityXi’an 710127China

The utilization of the dispersive Fourier transformation approach has enabled comprehensive observation of the birth process of dissipative solitons in fiber ***,there is still a dearth of deep understanding regarding the extinction process of dissipative *** this study,we have utilized a combination of experimental and numerical techniques to thoroughly examine the breathing dynamics of dissipative solitons during the extinction process in an Er-doped mode-locked fiber *** results demonstrate that the transient breathing dynamics have a substantial impact on the extinction stage of both steady-state and breathing-state dissipative *** duration of transient breathing exhibits a high degree of sensitivity to variations in pump *** simulations are utilized to produce analogous breathing dynamics within the framework of a model that integrates equations characterizing the population inversion in a mode-locked *** results corroborate the role of Q-switching instability in the onset of breathing ***,these findings offer new possibilities for the advancement of various operational frameworks for ultrafast lasers.

关键词： Breathing soliton Fiber laser Dispersive Fourier transform Q-switched instability

The emerging role of nitric oxide in the synaptic dysfunction of vascular dementia

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Neural Regeneration Research 2025年第2期20卷 402-415页

作者： Xiaorong Zhang Zhiying Chen Yinyi Xiong Qin Zhou ling-qiang Zhu Dan Liu Department of Pathology Affiliated Hospital of Jiujiang UniversityJiujiangJiangxi ProvinceChina Jiujiang Clinical Precision Medicine Research Center JiujiangJiangxi ProvinceChina Center for Cognitive Science and Transdisciplinary Studies Jiujiang UniversityJiangxi ProvinceChina Department of Neurology Affiliated Hospital of Jiujiang UniversityJiujiangJiangxi ProvinceChina Department of Rehabilitation Affiliated Hospital of Jiujiang UniversityJiujiangJiangxi ProvinceChina Department of Pathophysiology School of Basic MedicineTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei ProvinceChina

With an increase in global aging,the number of people affected by cerebrovascular diseases is also increasing,and the incidence of vascular dementia-closely related to cerebrovascular risk-is increasing at an epidemic ***,few therapeutic options exist that can markedly improve the cognitive impairment and prognosis of vascular dementia *** in Alzheimer’s disease and other neurological disorders,synaptic dysfunction is recognized as the main reason for cognitive *** oxide is one of the ubiquitous gaseous cellular messengers involved in multiple physiological and pathological processes of the central nervous ***,nitric oxide has been implicated in regulating synaptic plasticity and plays an important role in the pathogenesis of vascular *** review introduces in detail the emerging role of nitric oxide in physiological and pathological states of vascular dementia and summarizes the diverse effects of nitric oxide on different aspects of synaptic dysfunction,neuroinflammation,oxidative stress,and blood-brain barrier dysfunction that underlie the progress of vascular ***,we propose that targeting the nitric oxide-sGC-cGMP pathway using certain specific approaches may provide a novel therapeutic strategy for vascular dementia.

关键词： endoplasmic reticulum stress endothelial nitric oxide synthase gene therapy nitric oxide NO-sGC-cGMP pathway synaptic dysfunction vascular dementia

Clinical significance of peri-appendiceal abscess and phlegmon in acute complicated appendicitis patients undergoing emergency appendectomy

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World Journal of Gastrointestinal Surgery 2024年第10期16卷 3123-3132页

作者： ling-qiang Min Jing Lu Hong-Yong He Department of General Surgery/Emergency Surgery Zhongshan HospitalFudan UniversityShanghai 200032China Department of Nursing Zhongshan HospitalFudan UniversityShanghai 200032China

BACKGROUND Although antibiotic therapy has become the primary treatment for acute unco-mplicated appendicitis,the management of acute complicated appendicitis nece-ssitates careful consideration of various treatment *** To analyze the clinical data of patients who underwent emergency appendectomy for acute complicated appendicitis with peri-appendiceal abscess or phlegmon,identify factors influencing the postoperative length of hospital stay(LOS),and improve treatment *** The clinical data of acute complicated appendicitis patients with peri-appendiceal abscess or phlegmon who underwent emergency appendectomy at The Depart-ment of Emergency Surgery,Zhongshan Hospital,Fudan University from January 2016 to March 2023 were retrospectively *** A total of 234 patients were included in our *** duration of symptoms and the presence of an appendicolith were significantly correlated with the occurrence of peri-appendiceal abscess in patients with acute complicated appendicitis(P<0.001 and P=0.015,respectively).Patients with symptoms lasting longer than 72 h had a significantly longer postoperative LOS compared to those with symptoms lasting 72 h or less[hazard ratio(HR),1.208;95%CI:1.107-1.319;P<0.001].Additionally,patients with peri-appendiceal abscesses had a significantly longer postoperative LOS compared to those with phlegmon(HR,1.217;95%CI:1.095-1.352;P<0.001).The patients with peri-appendiceal abscesses were divided into two groups based on the median size of the abscess:Those with abscesses smaller than 5.0 cm(n=69)and those with abscesses 5.0 cm or larger(n=82).Patients with peri-appendiceal abscesses measuring 5.0 cm or larger had a significantly longer postoperative LOS than those with abscesses smaller than 5.0 cm(P=0.038).CONCLUSION The duration of symptoms and the presence of an appendicolith are significant risk factors for the formation of peri-appendiceal abscesses in patients with acute complicated ***

关键词： Acute complicated appendicitis Abscess Phlegmon Appendectomy Appendicolith

Senktide blocks aberrant RTN3 interactome to retard memory decline and tau pathology in social isolated Alzheimer’s disease mice

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Protein & Cell 2024年第4期15卷 261-284页

作者： He-Zhou Huang Wen-Qing Ai Na Wei ling-Shuang Zhu Zhi-qiang Liu Chao-Wen Zhou Man-Fei Deng Wen-Tao Zhang Jia-Chen Zhang Chun-Qing Yang Ya-Zhuo Hu Zhi-Tao Han Hong-Hong Zhang Jian-Jun Jia Jing Wang Fang-Fang Liu Ke Li Qi Xu Mei Yuan Hengye Man Ziyuan Guo Youming Lu Kai Shu ling-qiang Zhu Dan Liu Department of Pathophysiology School of Basic MedicineTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Department of Medical Genetics School of Basic MedicineTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Department of Pathology The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450002China Department of Pathology School of Basic MedicineZhengzhou UniversityZhengzhou 450002China The Second Affiliated Hospital Department of NeurologyHengyang Medical SchoolUniversity of South ChinaHengyang 421001China Beijing Key Laboratory of Aging and Geriatrics National Clinical Research Center for Geriatric DiseaseInstitute of GeriatricsChinese PLA General Hospital and Chinese PLA Medical AcademyBeijing 100853China Department of Neurosurgery Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Department of Neurology Union HospitalHuazhong University of Science and TechnologyWuhan 430022China Department of Biology Boston UniversityBostonMA 02215USA Center for Stem Cell and Organoid Medicine(CuSTOM) Division of Developmental BiologyCincinnati Children’s Hospital Medical CenterCincinnatiOH 45229USA

Sporadic or late-onset Alzheimer’s disease(LOAD)accounts for more than 95%of Alzheimer’s disease(AD)cases without any family *** genome-wide association studies have identified associated risk genes and loci for LOAD,numerous studies suggest that many adverse environmental factors,such as social isolation,are associated with an increased risk of ***,the underlying mechanisms of social isolation in AD progression remain *** the current study,we found that 7 days of social isolation could trigger pattern separation impairments and presynaptic abnormalities of the mossy fibre-CA3 circuit in AD *** also revealed that social isolation disrupted histone acetylation and resulted in the downregulation of 2 dentate gyrus(DG)-enriched miRNAs,which simultaneously target reticulon 3(RTN3),an endoplasmic reticulum protein that aggregates in presynaptic regions to disturb the formation of functional mossy fibre boutons(MFBs)by recruiting multiple mitochondrial and vesicle-related ***,the aggregation of RTN3 also recruits the PP2A B subunits to suppress PP2A activity and induce tau hyperphosphorylation,which,in turn,further elevates RTN3 and forms a vicious ***,using an artificial intelligence-assisted molecular docking approach,we determined that senktide,a selective agonist of neurokinin3 receptors(NK3R),could reduce the binding of RTN3 with its ***,application of senktide in vivo effectively restored DG circuit disorders in socially isolated AD *** together,our findings not only demonstrate the epigenetic regulatory mechanism underlying mossy fibre synaptic disorders orchestrated by social isolation and tau pathology but also reveal a novel potential therapeutic strategy for AD.

关键词： Alzheimer’s disease memory impairment synaptic disorder tau pathology

贸易便利化与沿线城市产业结构升级——基于中欧班列的准自然实验

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价格月刊 2024年第5期 39-48页

作者：强国令白瑞新疆财经大学金融学院新疆乌鲁木齐830012

中欧班列的国际货运属性导致其对中国贸易便利化和技术创新的影响有别于一般国内铁路。基于2004—2021年中国地级市的数据,将中欧班列开通视为“准自然实验”,运用多期双重差分法探究贸易便利化对沿线城市产业结构升级的影响。结果显示... 详细信息

中欧班列的国际货运属性导致其对中国贸易便利化和技术创新的影响有别于一般国内铁路。基于2004—2021年中国地级市的数据,将中欧班列开通视为“准自然实验”,运用多期双重差分法探究贸易便利化对沿线城市产业结构升级的影响。结果显示:第一,中欧班列开通能够推动沿线城市产业结构朝着高级化方向发展,在进行三种稳健性检验后结果仍然显著。第二,技术创新、融资支持和数字智能三种机制能对开通城市的产业结构升级产生显著的正向影响。第三,中欧班列对沿线城市产业结构升级的推动作用主要存在于非中心城市。未来城市应利用贸易便利化这一有力“引擎”,通过提升融资便利与数字智能水平,充分发挥交通基础设施在促进创新要素流动中的作用,为沿线城市产业结构调整提供支撑。

关键词：产业结构升级贸易便利化中欧班列现代化产业体系双重差分

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民用建筑设计中建筑防火技术的运用探析

工程建设与设计 2024年第5期 54-56页

作者：凌强强济南市莱芜区消防救援大队济南271100

从建筑物火灾的危害和特点出发,阐述了民用建筑设计中防火技术的运用原则和措施,包括建筑材料的选择、消防系统的设计、防火分区和通道设计等方面,讨论了防火技术在高层建筑和大型公共建筑中的应用,总结了民用建筑设计中防火技术的运用... 详细信息

从建筑物火灾的危害和特点出发,阐述了民用建筑设计中防火技术的运用原则和措施,包括建筑材料的选择、消防系统的设计、防火分区和通道设计等方面,讨论了防火技术在高层建筑和大型公共建筑中的应用,总结了民用建筑设计中防火技术的运用对建筑物安全性和可持续发展的重要意义,并提出了进一步完善防火技术在民用建筑设计中应用的建议。

关键词：民用建筑设计建筑防火技术运用

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血液透析机维护维修策略优化分析

中国医疗器械信息 2024年第16期30卷 148-150页

作者：孔令强淮安市第一人民医院江苏淮安223300

血液透析机属于一种血液净化设备,具有高精度的特点,主要被应用于尿毒症患者的治疗当中,其是由多个系统组合而成,例如透析液系统、电路系统以及血液循环系统等,日常使用需要维护维修,以此确保设备正常运行,以免出现故障问题。此次论文... 详细信息

血液透析机属于一种血液净化设备,具有高精度的特点,主要被应用于尿毒症患者的治疗当中,其是由多个系统组合而成,例如透析液系统、电路系统以及血液循环系统等,日常使用需要维护维修,以此确保设备正常运行,以免出现故障问题。此次论文先是对血液透析机常见故障问题进行了介绍,随后又对血液透析机维护维修措施进行了分析,最后是对血液透析机维护维修策略优化的探讨,以期为相关人员提供参考。

关键词：血液透析机维护维修维修策略优化故障维修

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智能电网中的继电保护技术分析

通信电源技术 2024年第5期41卷 74-76页

作者：强玲兰州倚能电力设计咨询有限公司甘肃兰州730050

智能电网的发展推动了继电保护技术的不断进步与创新。文章针对智能电网中继电保护技术的现状和挑战展开分析。先概述智能电网的重要性,随后探讨继电保护技术的基本构成和关键技术,并结合甘肃省兰州市的地理特征进行案例分析。在技术优... 详细信息

智能电网的发展推动了继电保护技术的不断进步与创新。文章针对智能电网中继电保护技术的现状和挑战展开分析。先概述智能电网的重要性,随后探讨继电保护技术的基本构成和关键技术,并结合甘肃省兰州市的地理特征进行案例分析。在技术优化与创新方面,文章提出了提高保护灵敏性、优化通信网络、强化智能化水平等策略,并探讨了人工智能、大数据分析、物联网等技术在继电保护中的应用前景,旨在为智能电网继电保护技术的进一步发展提供参考和指导。

关键词：智能电网继电保护技术分析