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Aryl Diazonium Salt-Triggered Cyclization a nd Cycloaddition Reactions: Past, Present, and Future

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chinese Journal of Chemistry 2020年第10期38卷 1132-1152页

作者： Fa-Guang Zhang Zhen Chen chi Wai Cheung Jun-An Ma Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic SciencesFrontiers Science Center for Synthetic Biology(Ministry of Education)and Tianjin Collaborative Innovation Center of Chemical Science&EngineeringTinjin UniversityTianjin 300072China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhou 350207FujianChina

Aryl diazonium salts occupy a privileged role in synthetic chemistry owing to their ready availability and versatile *** their applications in accessing diversely functionalized arene derivatives via denitrogenation-coupling and reduction/addition reactions have been well recognized by practitioners in both academia and industry,recent renaissance in chemical transformations of retaining the key N2-unit has emerged as a powerful technique to construct various A/-*** review covers the history and latest advances in cyclization and cycloaddition reactions using aryl diazonium salts as N2-annulation *** scope,applications,and opportunities in exploring new chemical space by this sustainable strategy are summarized and discussed.

关键词： salts summarized retaining

Boron-doped Covalent Triazine Framework for Efficient CO_(2) Electroreduction

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Chemical Research in chinese Universities 2022年第1期38卷 141-146页

作者： YI Jundong LI Qiuxia chi Shaoyi HUANG Yuanbiao CAO Rong College of Chemistry Fuzhou UniversityFuzhou 350108P.R.China Institute of New Materials&Industry Technology Wenzhou UniversityWenzhou 325027P.R.China School of Chemistry and Materials Science Collaborative Innovation Center of Chemistry for Energy Materials(iChEM)University of Science and Technology of ChinaHefei 230026P.R.China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350025P.R.China University of the chinese Academy of Sciences Beijing 100049P.R.China fujian Science&Technology Innovation Laboratory for Optoelectronic Information of china Fuzhou 350108P.R.China

Converting CO_(2) into chemicals with electricity generated by renewable energy is a promising way to achieve the goal of carbon neutrality. Carbon-based materials have the advantages of low cost, wide sources and environmental friendliness. In this work, we prepared a series of boron-doped covalent triazine frameworks and found that boron doping can significantly improve the CO selectivity up to 91.2% in the CO_(2) electroreduction reactions(CO_(2)RR). The effect of different doping ratios on the activity by adjusting the proportion of doped atoms was systematically investigated. This work proves that the doping modification of non-metallic materials is a very effective way to improve their activity, and also lays a foundation for the study of other element doping in the coming future.

关键词： Covalent triazine framework CO_(2)electroreduction CO B-doping

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施肥对杉木林不同土层温室气体排放的影响

森林与环境学报 2024年第5期44卷 457-467页

作者：黄智军谭世广丁驰祝嘉新丘清燕胡亚林福建农林大学林学院福建福州350002 福建农林大学菌草与生态学院福建福州350002

为深入研究深层土壤温室气体的迁移扩散特征,以亚热带杉木人工林为研究对象,设置施肥和不施肥2种处理,采用气体浓度梯度扩散法研究施肥对杉木人工林0~40 cm土层深度温室气体通量的影响,在此基础上结合土壤物理、化学和微生物指标的变化... 详细信息

为深入研究深层土壤温室气体的迁移扩散特征,以亚热带杉木人工林为研究对象,设置施肥和不施肥2种处理,采用气体浓度梯度扩散法研究施肥对杉木人工林0~40 cm土层深度温室气体通量的影响,在此基础上结合土壤物理、化学和微生物指标的变化阐明影响不同土层温室气体通量的主导因子。结果表明:杉木人工林土壤是二氧化碳(CO_(2))与氧化亚氮(N_(2)O)的排放源,甲烷(CH_(4))的吸收汇;土壤排放的CO_(2)、N_(2)O通量和土壤吸收的CH_(4)通量均随着土壤深度的增加而降低,0~10 cm土层土壤排放的CO_(2)、N_(2)O通量和吸收的CH_(4)通量分别是30~40 cm土层气体通量的1.3、2.5和3.3倍;与不施肥处理相比,施肥显著抑制了各土层CO_(2)的排放与CH_(4)的吸收(P<0.05),施肥处理后杉木人工林土壤排放的CO_(2)通量降低了56.7%~77.5%,土壤吸收的CH_(4)通量降低了30.4%~57.8%,而且施肥对这两种气体排放的抑制作用分别在30~40 cm和20~40 cm土层中最明显;施肥显著降低了10~30 cm土层土壤排放的N_(2)O通量(P<0.05),其中10~20 cm土层土壤排放的N_(2)O通量降低最明显。施肥主要通过提高土壤湿度以降低土壤CO_(2)与N_(2)O的排放和土壤对CH4的吸收。

关键词：温室气体土层深度施肥杉木人工林二氧化碳甲烷氧化亚氮

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改良反穿刺法食管空肠吻合在全腹腔镜根治性全胃切除术中的应用

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中华胃肠外科杂志 2024年第2期27卷 182-188页

作者：池良杰陈鸿源王襄瑜许超陈漩黄良祥薛芳沁福建医科大学省立临床医学院福建省立医院胃肠外科福州350001 浦城县医院普通外科南平353499

目的探讨改良反穿刺法食管空肠吻合在全腹腔镜根治性全胃切除术中的应用价值。方法采用描述性病例系列分析方法,回顾性收集2022年6月至2023年1月期间,福建省立医院胃肠外科收治的35例行全腹腔镜下根治性全胃切除改良反穿刺法食管空肠吻... 详细信息

目的探讨改良反穿刺法食管空肠吻合在全腹腔镜根治性全胃切除术中的应用价值。方法采用描述性病例系列分析方法,回顾性收集2022年6月至2023年1月期间,福建省立医院胃肠外科收治的35例行全腹腔镜下根治性全胃切除改良反穿刺法食管空肠吻合的胃癌患者的临床及病理资料。全组患者年龄(64.9±8.0)岁,男性22例(62.9%),体质指数(23.2±2.4)kg/m^(2),肿瘤位于胃上中部24例(68.6%),位于食管胃结合部11例(31.4%)。改良反穿刺法技术要点:(1)食管切开位置:于右侧壁切开食管置入抵钉座,然后利用右中腹部操作孔置入直线切割闭合器离断食管;(2)抵钉座置入方式:在钉砧座杆尖端穿丝线固定,抵钉座置入食管腔内后仅留丝线显露在外,直线切割闭合器紧贴丝线横行闭合切断食管,后通过丝线牵出钉砧座杆并拉紧固定;(3)空肠捆绑:先用丝线于空肠残端处绑紧套入吻合器中心杆上的空肠环,后用纱布条带再将空肠环与输出袢空肠捆绑固定。分析患者手术完成、术后恢复及术后病理情况。结果35例患者均顺利完成手术,无中转开腹,无围手术期死亡。手术时间为(232.7±34.4)min,抵钉座置入时间为(8.5±1.4)min,消化道重建时间为(40.5±4.8)min,术中出血量100(20~250)ml,手术切口长度为(5.3±0.9)cm。所有患者肿瘤上切缘均为阴性,距离为(3.5±1.2)cm,清扫淋巴结数目(33.9±7.1)枚。术后首次下床、首次肛门排气、恢复流质饮食及术后住院时间分别为(3.2±1.1)d、(3.7±1.5)d、(4.6±2.3)d及(9.8±3.2)d。术后5例(14.3%)患者出现并发症,其中食管空肠吻合口漏1例、食管空肠吻合口狭窄2例,肺部感染、不完全性肠梗阻各1例,均予保守治疗后痊愈。。结论在全腹腔镜根治性全胃切除术中采用改良反穿刺法行食管空肠吻合安全可行,可以获得更高的食管上切缘,且手术切口小,近期疗效良好,值得推广。

关键词：胃肿瘤全胃切除腹腔镜改良反穿刺食管空肠吻合

膳食营养干预结合不同孕周胰岛素应用对妊娠期糖尿病患者血糖水平、妊娠结局的影响

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糖尿病新世界 2024年第4期27卷 60-62,70页

作者：刘文峰池晓玲黄敏红福建医科大学附属龙岩第一医院产科福建龙岩364000

目的分析在膳食营养干预基础上,对妊娠期糖尿病患者在不同孕周针对性应用胰岛素治疗的效果。方法选取2021年11月—2023年4月福建医科大学附属龙岩第一医院收治的112例妊娠期糖尿病患者作为研究对象,以不同孕周分为观察组(56例,孕周≤32... 详细信息

目的分析在膳食营养干预基础上,对妊娠期糖尿病患者在不同孕周针对性应用胰岛素治疗的效果。方法选取2021年11月—2023年4月福建医科大学附属龙岩第一医院收治的112例妊娠期糖尿病患者作为研究对象,以不同孕周分为观察组(56例,孕周≤32周)和对照组(56例,孕周>32周),两组患者均接受膳食营养干预联合胰岛素治疗,对比两组患者血糖水平、妊娠不良结局发生率。结果治疗后,观察组血糖水平、妊娠不良结局发生率低于对照组,差异有统计学意义(P均32周胰岛素治疗,于孕周≤32周治疗可更好地调控血糖水平,降低不良妊娠结局发生率,可行性良好。

关键词：膳食营养干预不同孕周胰岛素妊娠期糖尿病血糖水平妊娠结局

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创新链视角下地方公益农业类科研机构创新效率测度研究

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农业科技管理 2024年第1期43卷 19-24页

作者：池敏青刘用场张梅黄健福建省农业科学院农业经济与科技信息研究所福州350003 福建省农业科学院发展研究处福州350003 福建经济学校福州350003

文章基于创新链理论,将公益农业类科研机构划分为科技研发阶段和成果转化阶段,采用DEA-Malquist指数法测算2011—2020年21家福建省属公益农业类科研机构不同阶段科技创新效率。结果表明:10年间,科技研发阶段和成果转化阶段的创新效率均... 详细信息

文章基于创新链理论,将公益农业类科研机构划分为科技研发阶段和成果转化阶段,采用DEA-Malquist指数法测算2011—2020年21家福建省属公益农业类科研机构不同阶段科技创新效率。结果表明:10年间,科技研发阶段和成果转化阶段的创新效率均表现为退步状态,科技研发阶段创新效率下降5.10%,成果转化阶段下降3.20%,可见两阶段均有较大提升空间;21家机构不同阶段创新效率差距明显,47.62%的机构科技研发效率处于退步状态,创新指数最大差距达0.756,38.10%的机构成果转化效率处于退步状态,创新指数最大差距达0.919;机构创新发展模式差距大,23.81%为集约型,9.52%为粗放型,28.57%为研发高效-转化低效型,38.10%为研发低效-转化高效型。在此基础上,结合加快推进科技政策创新、科技体制改革等外部因素,引导机构形成学科布局、技术积累与产业经济发展格局相适应科研组织模式等内部因素,分类提出有针对性的对策建议。

关键词：创新链公益农业类科研机构创新效率创新模式 DEA-Malquist指数法科技研发成果转化

Epithelial-mesenchymal transition effect of fine particulate matter from the Yangtze River Delta region in china on human bronchial epithelial cells

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Journal of Environmental Sciences 2018年第4期30卷 155-164页

作者： Yulang chi Qiansheng Huang Yi Lin Guozhu Ye Huimin Zhu Sijun Dong Center for Excellence in Urban Atmospheric Environment Institute of Urban Environment Chinese Academy of Sciences Key Lab of Urban Environment and Health Institute of Urban Environment Chinese Academy of Sciences College of Resources and Environment University of Chinese Academy of Sciences

Epidemiological studies have demonstrated that fine particulate matter（PM（2.5）） exposure causes airway inflammation, which may lead to lung cancer. The activation of epithelial–mesenchymal transition（EMT） is assumed to be a crucial step in lung tumor metastasis and development. We assessed the EMT effect of low concentrations（0, 0.1, 1.0, and 5.0 μg/m L）of PM（2.5） organic extract on a human bronchial epithelial cell line（BEAS-2 B）. PM（2.5） samples were collected from three cities（Shanghai, Ningbo, and Nanjing） in the Yangtze River Delta（YRD） region in autumn 2014. BEAS-2 B cells were exposed to the PM（2.5） extract to assess cell viability, invasion ability as well as the relative m RNA and protein expressions of EMT markers. Our findings revealed that BEAS-2 B cells changed from the epithelial to mesenchymal phenotype after exposure. In all groups, PM（2.5） exposure dose-dependently decreased the expression of E-cadherin and increased the expression of Vimentin. The key transcription factors, including ZEB1 and Slug, were significantly up-regulated upon exposure. These results indicated that the PM（2.5） organic extract induced different degrees of EMT progression in BEAS-2 B cells. The cell invasion ability increased in a concentration-dependent manner after 48 hr of treatment with the extract. This study offers a novel insight into the effects of PM（2.5） on EMT and the potential health risks associated with PM（2.5） in the YRD region.

关键词： PM2.5 BEAS-2B Epithelial–mesenchymal transition Cell invasion

regeneration of thermally deactivated commercial V-W-Ti catalysts

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Frontiers of Chemical Science and Engineering 2012年第1期6卷 38-46页

作者： Xuesong SHANG Jianrong LI Xiaowei YU Jinsheng CHEN chi HE Key Laboratory of Urban Environment and Health Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China College of Chemical Engineering Huaqiao UniversityXiamen 361021China

An effective method for the regeneration of thermally deactivated commercial monolith SCR catalysts was investigated. Two types of regenerated solutions, namely NH4C1 （l mol/L） and dilute H2SO4 （0.5 tool/L）, were employed to treat the used catalyst. The effects of temperature and the regeneration process on the structural and textural properties of the catalysts were determined by X-ray diffraction, scanning electron microscopy, N2 adsorption/desorption, elemental analysis and Fourier transform infrared spectroscopy. The results suggest that the anatase phase of the used catalyst is maintained after exposure to high temperatures. Some of the catalytic activity was restored after regeneration. The catalyst regenerated by aqueous NH4C1 had a higher activity than that of the catalyst treated by dilute H2SO4. The main reason is that the NH3 generated from the decomposition of NH4C1 at high temperatures can be adsorbed onto the catalyst which promotes the reaction. The aggregated V205 were partially re-dispersed during the regeneration process, and the intrinsic oxidation of ammonia with high concentrations of O2 is a factorthat suppresses the catalytic activity.

关键词： V2O5-WO3/TiO2 catalysts thermal deactiva-tion regeneration NH4C1 dilute H2SO4 solution

Simultaneous bilateral floating knee:A case report

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World Journal of Clinical Cases 2022年第28期10卷 10172-10179页

作者： chi-Ming Wu Hung-En Liao Shou-Jen Lan Department of Orthopaedic Jen-Ai HospitalTaichung 42481Taiwan Department of Orthopaedic National Defense Medical CenterTaipei 11490Taiwan Department of Healthcare Administration Asia UniversityTaichung 41354Taiwan Department of Medical Research China Medical University HospitalChina Medical UniversityTaichung 40402Taiwan School of Medical Science Putian UniversityPutian 351100Fujian ProvinceChina

BACKGROUND The phrase “floating knee is a flail knee joint,” referring to ipsilateral femoral and tibial fractures,was first used by Blake and Mc Bryde in *** condition is often caused by a high-energy trauma with often extensive injury to the soft tissues,and is accompanied by life-threatening systemic complications,including head,chest or abdominal injuries and a high incidence of fat *** knee is a severe and uncommon injury *** SUMMARY A 27-year-old man sustained multiple injuries when the electric motorcycle he was riding was hit by a *** injuries included traumatic hypovolemic shock,comminuted and open type II fractures of the left femoral shaft,fracture of the right femoral shaft,comminuted fracture of the bilateral tibial and fibular shaft,and multiple lacerations and abrasions on his forehead,lower lip,neck and *** diagnosis was simultaneous bilateral floating knee complicated with soft tissue *** emergency treatment and the exclusion of life-threating complications,open reduction and internal fixation were successfully performed using plates and screws in the bilateral femoral and tibial *** Simultaneous bilateral floating knee is a rare and severe injury *** treatment is challenging,and *** present a case report of a young adult who suffered from bilateral floating knees during road traffic *** also offer our treatment experience of this complex injury and review past literature.

关键词： Floating knee Femoral and tibial fractures High-energy trauma Life-threatening complications Fat embolism syndrome Case report