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Journal of Energy Chemistry 2020年第7期29卷 78-86,I0003页

作者： Hongyan Li Le Yang Zhongxu wang Peng Jin Jingxiang Zhao zhongfang Chen College of Chemistry and Chemical Engineering and Key Laboratory of Photonic and Electronic Bandgap MaterialsMinistry of EducationHarbin Normal UniversityHarbin 150025HeilongjiangChina School of Materials Science and Engineering Hebei University of TechnologyTianjin 300130China Department of Chemistry University of Puerto RicoRio Piedras CampusSan JuanPR 00931USA

Electrocatalytic nitrogen reduction reaction(NRR)at ambient conditions holds great promise for sustainably synthesizing ammonia(NH3),while developing highly-efficient,long-term stable,and inexpensive catalysts to activate the inert N≡N bond is a key scientific *** this work,on the basis of the concept"N-heterocyclic carbenes(NHCs)",we propose a carbon decorated graphitic-carbon nitride(C/g-C3N4)as novel metal-free NRR electrocatalyst by means of density functional theory(DFT)*** results reveal that the introduced C atom in g-C3N4 surface can be regarded as NHCs and catalytic sites for activating N≡N bond,and are stabilized by the g-C3N4 substrate due to sterically disfavored ***,this NHCs-based heterogeneous catalysis can efficiently reduce the activated N2 molecule to NH3 with a low overpotential of 0.05 V via an enzymatic *** work is the first report of NHCs-based electrocatalyst for N2 fixation,thus opening an alternative avenue for advancing sustainable NH3 production.

关键词： Nitrogen reduction reaction N-heterocyclic carbenes Overpotential Density functional theory

集束化护理在预防重症监护室机械通气患儿VAP发生中的效果

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医学研究前沿

医学研究前沿 2024年第4期2卷 55-57页

作者：余忠芳李佳昆明市儿童医院云南昆明650000

目的目的分析集束化护理在预防重症监护室机械通气患儿VAP发生中的价值。方法方法于2021年8月-2023年8月间到本院治疗的重症患儿中选择60例进行研究,将其分为对照组与观察组,分别使用常规护理与集束化护理,对患儿VAP发生率、血气指标等... 详细信息

目的目的分析集束化护理在预防重症监护室机械通气患儿VAP发生中的价值。方法方法于2021年8月-2023年8月间到本院治疗的重症患儿中选择60例进行研究,将其分为对照组与观察组,分别使用常规护理与集束化护理,对患儿VAP发生率、血气指标等进行对比。结果结果观察组患儿VAP发生率、血气指标等均明显优于对照组(p<0.05)。结论结论将集束化护理应用于重症监护室机械通气患儿护理中,可实现对VAP发生率的有效控制。

关键词：集束化护理重症监护室机械通气 VAP

Conjugated polymerized bimetallic phthalocyanine based electrocatalyst with Fe-N_(4)/Co-N_(4) dual-sites synergistic effect for zinc-air battery

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Journal of Energy Chemistry 2023年第11期86卷 41-53,I0002页

作者： Shuaifeng wang zhongfang Li Wenjie Duan Peng Sun Jigang wang Qiang Liu Lei Zhang Yanqiong Zhuang School of Chemistry and Chemical Engineering Shandong University of TechnologyZibo 255049ShandongChina

The bifunctional oxygen catalyst is essential for zinc-air batteries(ZABs).Here,an efficient bifunctional oxygen catalyst,PPcFeCo/3D-G,is obtained throughπ-πinteraction between the conjugated polymerized iron-cobalt phthalocyanine(PPcFeCo)with excellent thermal stability and three-dimensional graphene(3D-G).The bimetallic synergistic effect of PPcFeCo,verified by DFT(Density functional theory)calculation,andπ-πinteractions enhances the catalytic activity and durability of the PPcFeCo/*** electrochemical performance,the PPcFeCo/3D-G with a high electron transfer number(3.98,@0.768 V ***)has excellent half-wave potential(E_(1/2)=0.890 V ***)and exhibits outstanding reversibility(ΔE=0.700 V,ΔE=Ej=10-E_(1/2)).The liquid ZAB(LZAB)employed PPcFeCo/3D-G displays a high power density(222 m W cm^(-2)),a specific capacity(792 m A h g-1),and excellent durability(120 h).This work has guiding significance for the preparation of high-efficiency bifunctional catalysts.

关键词： Zn-airbattery Bifunctional oxygen catalysts Polymerized iron-cobalt phthalocyanine Bimetallic synergy π-πinteraction

Study on the absorption and fluorescence and resonance Rayleigh scattering spectra of Cu (II)-fluoroquinolone chelates with erythrosine and their applications

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Science China Chemistry 2008年第1期51卷 31-40页

作者： wang Jian LIU zhongfang LIU ShaoPu LIU JiangTao SHEN Wei YI AoEr School of Chemistry and Chemical Engineering Southwest China UniversityChongqing 400715China Department of Chemistry Yangtze Normal UniversityChongqing 408000China

In pH 4.2-5.0 Britton-Robinson buffer solution medium, fluoroquinolone antibiotics (FLQs), such as ciprofloxacin (CIP), norfloxacin (NOR), ofloxacin (OF), levofloxacin (LEV), lomefloxacin (LOM), and sparfloxacin (SPA), react with Cu (II) to form chelate cations, which further bind with erythrosine to form the ion association complexes. They can result in the changes of the absorption spectra. Simultane- ously, erythrosine fades obviously and the maximum fading wavelength is located at 526 nm. The fad- ing reactions have high sensitivities. Thus, new spectrophotometries of determination for these drugs are developed. The ion-association reactions result in the quenching of fluorescence, which also have high sensitivities. The detection limits for six antibiotics are in the range of 7.1-12.2 μg·L?1. Furthermore, the reactions can result in the enhancement of resonance Rayleigh scattering (RRS). The maximum scattering peaks of six ion-association complexes are located at 566 nm, and there are two small RRS peaks at 333 nm and 287 nm. The detection limits for fluoroquinolone antibiotics are in the range of 1.70 -3.10 μg·L?1 for RRS method. Among the above three methods, the RRS method has the highest sen- sitivity. In this work, we investigated the spectral characteristics of the absorption, fluorescence and RRS, the optimum conditions of the reactions, and the properties of the analytical chemistry. In addi- tion, the mechanism of reactions were discussed by density function theory (DFT) and AM1 methods.

关键词： fluoroquinolone Cu (II) erythrosine absorption fluorescence resonance Rayleigh scattering spectra

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房屋建筑调查数据质检软件设计

无线互联科技 2022年第17期19卷 39-42页

作者：王忠芳江苏省基础地理信息中心江苏南京210013

房屋建筑调查数据质量是普查成果的重要组成部分。常规的质量检查方法是人工检查与国家质检软件质检相结合,人工检查在检查内容、效率、成本等方面存在多种不足,国家质检软件只能对字段是否必填及图形拓扑关系等进行检查,缺少字段逻辑... 详细信息

房屋建筑调查数据质量是普查成果的重要组成部分。常规的质量检查方法是人工检查与国家质检软件质检相结合,人工检查在检查内容、效率、成本等方面存在多种不足,国家质检软件只能对字段是否必填及图形拓扑关系等进行检查,缺少字段逻辑关系检查和规范性检查。文章针对房屋建筑调查技术导则对数据质量的要求,从空间、属性、拓扑等方面详细描述了房屋建筑调查数据质检软件的设计内容,围绕属性和拓扑关系规则集的内容组织、检查模型构建等方面阐述了质检软件的设计思路,在关键技术和主要功能等方面提出技术思路,为住建部门开展房屋建筑调查数据质量检查工作提供借鉴。

关键词： FME 房屋建筑调查质量检查规则集模板库

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自然灾害综合风险普查项目管理方法应用

江苏科技信息 2023年第14期40卷 45-49页

作者：王忠芳江苏省基础地理信息中心江苏南京210013

自然灾害综合风险普查是党中央、国务院为全面掌握我国自然灾害风险隐患情况,提升全社会抵御自然灾害的综合防范能力而部署的一项系统工程。房屋建筑和市政设施承灾体普查是其中的重要内容,特点是工期紧、任务重、专业性强。为了保证普... 详细信息

自然灾害综合风险普查是党中央、国务院为全面掌握我国自然灾害风险隐患情况,提升全社会抵御自然灾害的综合防范能力而部署的一项系统工程。房屋建筑和市政设施承灾体普查是其中的重要内容,特点是工期紧、任务重、专业性强。为了保证普查进度满足合同期限和成果质量符合规范要求,做好普查项目管理十分重要。文章从准备工作、项目实施、进度控制和质量控制等方面详细阐述了如何做好普查项目管理,可为同类项目的管理工作提供经验借鉴。

关键词：自然灾害综合风险普查房屋建筑市政设施项目管理质量控制进度控制

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μ-and m-calpain expression and activity changes following diethylstilbestrol injection in the rat anterior pituitary

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Neural Regeneration Research 2011年第1期6卷 60-65页

作者： Weijiang Zhao zhongfang Shi Fang Yuan Guilin Li Yazhuo Zhang Zhongcheng wang Neuroscience Center Shantou University Medical College Shantou 51504 I Guangdong Province China Beijing Neurosurgical Institute Capital Medical University Beijing 100050 China

Little is known about changes in calpain activity in the pituitary gland. In the present study,μ- and m-calpain activity changes were detected in the rat anterior pituitary following intraperitoneal injection of diethylstilbestrol. Double-immunofluorescence labeling confirmed colocalization of μ- and m-calpain in prolactin-secreting cells （lactotrophs）. Western blot analysis revealed significantly increased expression of both calpains, which accompanied upregulated cytosol and membrane zymographic activities at 12 weeks following diethylstilbestrol injection, compared with rats injected with sunflower oil. Moreover, following estrogen injection, pituitary gland pathological damage gradually worsened with increasing time. Results demonstrated that estrogen regulated calpain expression and activity, and both calpains participated in the pathophysiological processes of the pituitary gland. Ubiquitous calpain expression could serve as an effective target for anti-estrogen drugs.

关键词： diethylstilbestrol ubiquitous calpain anterior pituitary prolactinoma Wistar rats

Guidelines for rational design of high-performance absorbents:A case study of zeolite adsorbents for emerging pollutants in water

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Green Energy & Environment 2017年第4期2卷 363-369页

作者： Xiaoxuan Wei Ya wang Arturo J.Hernndez-Maldonado zhongfang Chen Department of Chemistry Institute for Functional Nanomaterials University of Puerto Rico Rio Piedras Campus Department of Chemical Engineering Institute for Functional Nanomaterials University of Puerto Rico Mayagüez Campus

Rational design is important to achieve high-performance sorbents used to remove the contaminants of emerging concern(CECs) from ***, it is hard to propose effective design guidelines due to the lack of a clear understanding of the interaction mechanisms. By means of systematic quantum chemical computations, as a case study, we investigated the interactions between zeolite X/M^(n+)-zeolite X(Si/Al=1,M^(n+)=Cu^(2+) and Ni^(2+)) and three commonly used CECs(namely salicylic acid, carbamazepine and ciprofloxacin) in water to clarify the adsorption mechanisms. Our computations found that anionic salicylic acid cannot be adsorbed by neither zeolite X nor M^(n+)-zeolite X in neutral water due to the high electrostatic repulsion. In comparison, carbamazepine and ciprofloxacin have favorable binding energies with both zeolite X and M^(n+)-zeolite X, and their interactions with M^(n+)-zeolite X are stronger due to the joint effects of H-bond, metal complexation and electrostatic interaction. The adsorption loading of ciprofloxacin, which has a large molecular size, on M^(n+)-zeolite X is limited due to the steric hindrance. In general, steric hindrance, electrostatic interaction, H-bond and metal complexation are dominant factors for the examined systems in this study. Thus, for the design of high-performance absorbing materials, we should fully consider the molecular properties of pollutants(molecular size, surface electrostatic potential and atomic type, etc.), and properly enhance the favorable effects and avoid the unfavorable factors as much as possible under the guidance of the interaction mechanisms.

关键词： Adsorption mechanism Adsorbent design guidelines Quantum chemical computations Contaminants of emerging concern Zeolite X

Water vapor δD dynamics over China derived from SCIAMACHY satellite measurements

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Science China Earth Sciences 2014年第4期57卷 813-823页

作者： LIU zhongfang Kei YOSHIMURA Casey D.KENNEDY wang XinHui PANG ShuoGuang Tianjin Key Laboratory of Water Resource and Environment Tianjin Normal University Atmosphere and Ocean Research Institute University of Tokyo United States Department of Agriculture Agricultural Research ServicePasture Systems and Watershed Management Research UnitEast WarehamMA 02538USA

This study investigates water vapor isotopic patterns and controls over China using high-quality water vapor δD data retrieved from the Scanning Imaging Absorption Spectrometer for Atmospheric Chartography （SCIAMACHY） observations. The results show that water vapor δD values on both annual and seasonal time-scales broadly exhibit a continental effect, with values largely decreasing northwestward from coastal lowlands to high-elevation mountainous regions. However, region-specific analysis reveals spatially distinct patterns of water vapor dD between seasons. In the monsoon domain （e.g., China south of 35~N）, depletion in D in the summer and fall seasons is closely tied to monsoon moisture sources （the Indian and Pacific oceans） and subsequent amount effect, but higher 8D values in winter and spring are a result of isotopically-enriched conti- nental-sourced moisture proceeded by less rainout. In contrast, farther inland in China （non-monsoon domain）, moisture is de- rived overwhelmingly from the dry continental air masses and local evaporation, and 8D values are largely controlled by the temperature effect, exhibiting a seasonality with isotopically enriched summer and depleted winter/spring. The observation that the spatial pattern of water vapor δD is the opposite to that of precipitation δD in the summer season also suggests that partial evaporation of falling raindrops is a key driver of water vapor isotope in the non-monsoon domain. This study highlights the importance of non-Rayleigh factors in governing water vapor isotope, and provides constraints on precipitation isotope inter- pretation and modern isotope hydrological processes over China.

关键词： water vapor δD moisture sources evapotranspiration droplet evaporation China

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房屋建筑调查成果管理系统设计与实现

无线互联科技 2023年第16期20卷 75-77页

作者：王青王忠芳江苏省基础地理信息中心江苏南京210013

房屋建筑调查是全国自然灾害综合风险普查的重要组成部分,摸清房屋建筑自然灾害综合风险隐患底数,是客观认识我国自然灾害综合风险的关键点。文章基于南通市海门区房屋建筑调查成果,研发了调查成果管理系统。该系统以数据模型为核心,以... 详细信息

房屋建筑调查是全国自然灾害综合风险普查的重要组成部分,摸清房屋建筑自然灾害综合风险隐患底数,是客观认识我国自然灾害综合风险的关键点。文章基于南通市海门区房屋建筑调查成果,研发了调查成果管理系统。该系统以数据模型为核心,以动态缓存、矢量底图为支撑,通过综合数据看板形式分级分类多维度展示建筑调查成果,为开展自然灾害防治工作和保障经济社会可持续发展提供了权威的科学决策依据。

关键词：房屋普查调查成果地理信息系统

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