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Rapid Screening of chloramphenicol in Turbot with photobacterium phosphoreum DB

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High Technology Letters 2009年第2期15卷 214-219页

作者：朱兰兰 wang Jingxue Lin Hong wang yaqun wang Jing Mei Cexia Food Science and Engineering Department Ocean University of China Qingdao 266003 P.R. China Yellow Sea Fisheries Research Institute Chinese Academy of Fishery Sciences Qingdao 266071 P.R. China

A new,simple,rapid microbial assay was put forward for the detection of chloramphenicol(CAP)residues in Turbot muscles using luminescent bacteria DB(Photobacterium phosphoreum)as test *** the luminescence inhibition of DB,the concentrations of CAP were *** spiked inTurbot muscle tissues ranging from 0.5 to 100μg/kg was extracted using ethyl acetate and *** had a good recovery of 93.69% with a minimum detection limit of 0.65μg/*** can be per-formed within 30min following simple *** method therefore proved to be advantageous overchromatographic procedures as it was inexpensive,quite sensitive and can be adopted for rapid screeningof CAP in Turbot tissues.

关键词： chloramphenicol Photobacterium phosphoreum microbial assay turbot

Confined synthesis of MoS_(2) with rich co-doped edges for enhanced hydrogen evolution performance

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Journal of Energy Chemistry 2022年第7期31卷 18-26,I0002页

作者： Zongge Li Chenlei Li Jianwen Chen Xu Xing yaqun wang Ying Zhang Miaosen Yang Guoxin Zhang Al-ion Battery Research Center Department of Energy Storage TechnologyShandong University of Science and TechnologyQingdao 266590ShandongChina State Key Laboratory of Heavy Oil Processing China University of Petroleum(East China)Qingdao 266580ShandongChina School of Chemical Engineering Northeast Electric Power UniversityJilin 132012JilinChina

Activating MoS_(2) with atomic metal doping is promising to harvest desirable Pt-matched hydrogen evolution reaction(HER)catalytic ***,we developed an efficient method to access edgerich lattice-distorted MoS_(2) for highly efficient HER via in-situ sulphuration of atomic Co/Mo species that were well-dispersed in a formamide-derived N-doped carbonaceous(f-NC)*** from others,pre-embedding Co/Mo species in f-NC controls the release of metal sources upon annealing in S vapor,grafting the as-made MoS_(2) with merits of short-range crystallinity,distorted lattices,rich defects,and more edges *** content of atomic Co species embedded in MoS_(2) reaches up to 2.85 at.%,and its atomic dispersion has been systematically confirmed by using XRD,HRTEM,XPS,and XAS *** Co-doped MoS_(2) sample exhibits excellent HER activity,achieving overpotentials of 67 and155 m V at j=10 m A cm^(-2) in 1.0 M KOH and 0.5 M H_(2)SO_(4),*** functional theory simulations suggest that,compared with free-doping MoS_(2),the edged Co doping is responsible for the significantly improved HER *** method,in addition to providing reliable Pt-matched HER catalysts,may also inspire the general synthesis of edge-rich metal-doped metal chalcogenide for a wide range of energy conversion applications.

关键词： Molybdenum sulfide Metal doping Formamide Carbon material Hydrogen evolution reaction

Boosting the Ni-Zn interplay via O/N dual coordination for high-efficiency CO_(2) electroreduction

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Carbon Energy 2023年第4期5卷 68-80页

作者： Ying Zhang Hailei Jiang Anuj Kumar Hongchuan Zhang Zongge Li Tongxin Xu Yuan Pan yaqun wang Zhiming Liu Guoxin Zhang Zifeng Yan State Key Laboratory of Heavy Oil Processing College of Chemistry and Chemical EngineeringChina University of Petroleum(East China)QingdaoShandongChina Department of Chemistry Institute of Humanities and Applied ScienceGLA UniversityMathuraIndia College of Chemistry and Chemical Engineering Liaocheng UniversityLiaochengShandongChina Al‐Ion Battery Research Center College of Energy Storage TechnologyShandong University of Science and TechnologyQingdaoShandongChina Shandong Engineering Laboratory for Preparation and Application of High‐performance Carbon‐Materials College of Electromechanical EngineeringQingdao University of Science and TechnologyQingdaoShandongChina

Design of supportive atomic sites with a controllably adjusted coordinating environment is essential to advancing the reduction of CO_(2) to value-added fuels and chemicals and to achieving carbon ***,atomic Ni(Zn)sites that are uniquely coordinated with ternary Zn(Ni)/N/O ligands were successfully decorated on formamide-derived porous carbon nanomaterials,possibly forming an atomic structure of Ni(N_(2)O_(1))-Zn(N_(2)O_(1)),as studied by combining X-ray photoelectron spectroscopy and X-ray absorption *** the mediation of additional O coordination,the Ni-Zn dual site induces significantly decreased desorption of molecular *** NiZn-NC decorated with rich Ni(N_(2)O_(1))-Zn(N_(2)O_(1))sites remarkably gained>97%CO Faraday efficiency over a wide potential range of -0.8 to -1.1 V(relative to reversible hydrogen electrode).Density functional theory computations suggest that the N/O dual coordination effectively modulates the electronic structure of the Ni-Zn duplex and optimizes the adsorption and conversion properties of CO_(2) and subsequent *** from the conventional pathway of using Ni as the active site in the Ni-Zn duplex,it is found that the Ni-neighboring Zn sites in the Ni(N_(2)O_(1))-Zn(N_(2)O_(1))coordination showed much lower energy barriers of the CO_(2) protonation step and the subsequent dehydroxylation step.

关键词： atomic dispersion carbon materials CO_(2)reduction formamide metal-nitrogen-carbon

Mechanistic understanding of the charge storage processes in FeF_(2) aggregates assembled with cylindrical nanoparticles as a cathode material for lithium-ion batteries by in situ magnetometry

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Carbon Energy 2022年第6期4卷 1011-1020页

作者： Zhengqiang Hu Fengling Zhang Huanyu Liang Hao Zhang Huaizhi wang Tiansheng wang Renbin Liu Jie Liu Yadong Li Xiaotong Dong Lianyu Bao Zhuan Liang yaqun wang Shishen Yan Qiang Li Hongsen Li Center for Marine Observation and Communications College of PhysicsQingdao UniversityQingdaoShandongChina College of Electrical Engineering and Automation Shandong University of Science and TechnologyQingdaoShandongChina State Key Laboratory of Crystal Materials School of PhysicsShandong UniversityJinanShandongChina

Transition metal fluorides(TMFs)cathode materials have shown extraordinary promises for electrochemical energy storage,but the understanding of their electrochemical reaction mechanisms is still a matter of debate due to the complicated and continuous changing in the battery internal ***,we design a novel iron fluoride(FeF_(2))aggregate assembled with cylindrical nanoparticles as cathode material to build FeF_(2) lithium-ion batteries(LIBs)and employ advanced in situ magnetometry to detect their intrinsic electronic structure during cycling in real *** results show that FeF_(2) cannot be involved in complete conversion reactions when the FeF_(2) LIBs operate between the conventional voltage range of 1.0–4.0 V,and that the corresponding conversion ratio of FeF_(2) can be further ***,we first demonstrate that the spin-polarized surface capacitance exists in the FeF_(2) cathode by monitoring the magnetic responses over various voltage *** research presents an original and insightful method to examine the conversion mechanism of TMFs and significantly provides an important reference for the future artificial design of energy systems based on spinpolarized surface capacitance.

关键词： charge storage mechanism FeF_(2)cathode materials in situ magnetometry lithium-ion batteries

The Two-Way Interaction of Tea Polyphenols with Gut Microbiota and Their Effect on Atherosclerosis

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Food Science and Human Wellness 2024年

作者： Xiaonan Sima Xiaoqi Zeng Shujie Liu yaqun wang Zheng Tang Jinhui Lao Yajia Ding Hong Xu Department of Physiology， School of Basic Medicine， Jiangxi Medical College， Nanchang University Joint Program of Nanchang University and Queen Mary University of London， Jiangxi Medical College， Nanchang University Jiangxi Provincial Drug Administration The 2nd Affiliated Hospital， Nanchang University The 4th Affiliated Hospital， Nanchang University

Atherosclerosis is the main cause of most cardiovascular diseases. Given the increasing morbidity and mortality in these diseases in recent years， it is important to investigate novel treatments and preventive strategies for atherosclerosis. Tea polyphenols (TPs)， natural substances derived from tea， have a variety of functions such as anti-inflammation and antioxidants. Numerous studies have closely linked TPs and gut microbiota to the development of atherosclerosis. By retrieving EBSCO， PubMed， Wiley InterScience， and Google Scholar databases， our review selects relevant literature from 1998 to 2023 to summarize the mutual interaction between TPs and gut microbiota and their protective effect on atherosclerosis. Specifically， TPs influence the diversity and abundance of gut microbiota， which may relieve atherosclerosis by promoting the colonization of beneficial microbiota and inhibiting the colonization of harmful microbiota. Simultaneously， the involvement of gut microbiota in TPs metabolism not only increases the bioavailability of TPs but also generates active metabolites， like gallic acid and protocatechuic acid， which have been found to alleviate atherosclerosis. Furthermore， the review outlines recent advances and challenges in the utilization of gut microbes and TPs for the prevention and treatment of atherosclerosis. In general， the review reflects the great potential of the interaction between TPs and gut microbes in the prevention and treatment of atherosclerosis.

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注意避免“领导职务周期律”

理论前沿 2006年第14期479卷 11-12页

作者：王亚群中共湖北省委党校

在领导活动中,存在一种经常发生作用的周期律,即“领导职务周期律”。为了有效地避免它的发生,需要做好以下几方面工作:第一,提高思想认识。第二,增强内驱力。第三,强化外驱力。第四,适时更新工作环境。

关键词：领导职务周期律原因对策

Oxygenated boron-doped carbon via polymer dehalogenation as an electrocatalyst for high-efficiency O_(2)reduction to H_(2)O_(2)

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Science China Materials 2022年第5期65卷 1276-1284页

作者： Yingna Chang Jiawei Li Jun Ma Yu Liu Rong Xing yaqun wang Guoxin Zhang Institute of New Energy on Chemical Storage and Power Sources College of Applied Chemistry and Environmental EngineeringYancheng Teachers UniversityYancheng 224000China Shandong University of Science and Technology Department of Electrical Engineering and AutomationQingdao 266590China College of Chemical Engineering Beijing University of Chemical TechnologyBeijing 100029China

The direct electrochemical synthesis of H_(2)O_(2)from O_(2)is currently the most promising alternative to energyintensive industrial anthraquinone oxidation/reduction methods. However, its widespread use is hampered by the lack of efficient low-cost electrocatalysts. In the current study,oxygenated boron-doped carbon(O-BC) materials were realized via a green synthetic strategy involving polymer dehalogenation and employed as electrode materials for the electrochemical synthesis of H_(2)O_(2)via a 2 e-oxygen *** catalytic activity of the O-BC materials was optimized through systematic variation of the boron source(H_(2)BO_(2))dosage and annealing temperature. Electrochemical measurements revealed that the optimal sample(O-BC-2-650)exhibited a selectivity of 98% for the 2 e-oxygen reduction to H2 O_(2)and an average H_(2)O_(2)production rate of412.8 mmol g_(cat)^(-1) h^(-1)in an H-type alkaline electrolyzer. Density functional theory simulations indicated that the functionalization of active B sites with one oxygen atom provides the lowest Gibbs free energy change(ΔG) of 0.03 e V for the hydrogenation of*O_(2), while functionalization with zero or two O atoms results in much larger ΔG values(0.08 and 0.10 e V,respectively). Thus, this work details a new type of green, lowcost, and metal-free electrocatalyst for H_(2)O_(2)production.

关键词： doped carbon material oxygenated dopant boron oxygen reduction reaction hydrogen peroxide

城乡关系视角下乡村治理演变的逻辑：1949～2019

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中国农村观察 2019年第6期 19-31页

作者：耿国阶王亚群东北大学文法学院辽宁大学哲学与公共管理学院

在中国特有的制度安排下,城乡关系是影响和理解70年乡村治理演变逻辑的重要维度。70年来,城乡关系先后经历了城乡分离、城乡失衡、城乡融合发展三个历史性阶段,"以农补工"的工业化优先政策、有限市场化与城乡非均衡发展政策、城乡融合... 详细信息

在中国特有的制度安排下,城乡关系是影响和理解70年乡村治理演变逻辑的重要维度。70年来,城乡关系先后经历了城乡分离、城乡失衡、城乡融合发展三个历史性阶段,"以农补工"的工业化优先政策、有限市场化与城乡非均衡发展政策、城乡融合发展政策先后成为主导城乡关系基本格局的战略性安排。具体到乡村治理演变上:"以农补工"的工业化优先政策使乡村以人民公社为组织载体的集体化治理成为"城乡分治"的逻辑延伸,党、政、社、经高度合一的整体性控制和动员成为该阶段乡村治理的支配性逻辑;1978年后,因应有限市场化与城乡非均衡发展政策,家庭联产承包责任制和"乡政村治"体制逐渐建立,党政社经相对分离,但计生、粮款征收、维稳等刚性任务压力较大,压力型体制和乡村治理的行政化逻辑成为主导逻辑;2006年以来,伴随农业税取消、大规模"以工补农",以及城乡融合发展政策的逐渐成型,传统任务压力大幅减轻,压力型体制向"三治合一"体系的转变,行政化逻辑向公共服务逻辑的转变,成为乡村治理演变的必然趋势。

关键词：城乡关系乡村治理整体性控制行政化公共服务

食管癌患者术后肺部感染的围术期影响因素分析

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临床麻醉学杂志 2017年第6期33卷 550-553页

作者：王亚群王玲安徽省安庆市第一人民医院麻醉科 246003

目的探讨围术期相关因素对食管癌患者术后肺部感染的影响。方法回顾性分析2012年8月至2016年8月于我院行食管癌根治术患者的临床资料,150例符合入选标准,根据术后是否并发肺部感染分为肺部感染组(n=32)与非感染组(n=118)。记录两组麻醉... 详细信息

目的探讨围术期相关因素对食管癌患者术后肺部感染的影响。方法回顾性分析2012年8月至2016年8月于我院行食管癌根治术患者的临床资料,150例符合入选标准,根据术后是否并发肺部感染分为肺部感染组(n=32)与非感染组(n=118)。记录两组麻醉药物使用总量,记录两组插管时间、单肺通气时间、手术时间、全麻时间、拔管时间、术中出血量、晶体补充量、胶体补充量、术中总补液量、麻醉方法和单肺通气方式,比较两组非间断膨肺比例、鼻导管吸痰比例和术后哌替啶镇痛比例。通过Logistic回归分析预测肺部感染发生的危险因素。结果肺部感染组舒芬太尼与丙泊酚用量明显多于,单肺通气时间、手术时间、全麻时间、拔管时间明显长于,非间断膨肺比例、鼻导管吸痰比例和术后哌替啶镇痛比例明显高于非感染组(P<0.05);两组咪达唑仑与顺阿曲库铵用量、插管时间、术中出血量、晶体补充量、胶体补充量、术中总补液量、麻醉方法及单肺通气方式差异均无统计学意义。Logistic回归分析显示,舒芬太尼用量每增加7.5μg(OR=1.65,95%CI 1.24~2.85)、单肺通气时间每增加10 min(OR=2.14,95%CI 1.32~3.62)、全麻时间每增加20 min(OR=1.87,95%CI 1.46~3.15)、鼻导管吸痰(OR=2.03,95%CI 1.27~3.46)及术后哌替啶镇痛(OR=3.44,95%CI 2.25~5.13)是预测术后肺部感染发生的危险因素。结论麻醉中使用合适的舒芬太尼总量、减少单肺通气时间与全麻时间、应用纤维支气管镜吸痰及术后采取自控静脉镇痛,有利于减少食管癌患者术后肺部感染的发生。

关键词：麻醉因素肺部感染食管癌单肺通气