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Comparison of two methods for detection of fecal indicator bacteria used in water quality monitoring of the Three Gorges Reservoir

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Journal of Environmental Sciences 2015年第12期27卷 42-51页

作者： Zhaodan Wang Guosheng Xiao Nong Zhou wenhua Qi Lin Han Yu ruan Dongqin Guo Hong Zhou College of life science and engineering Chongqing Three Gorges University

Scientifically sound methods to rapidly measure fecal indicator bacteria are important to ensure safe water for drinking and recreational purposes.A total of 200 water samples obtained from the Three Gorges Reservoir during three successive one-year study periods（October 2009 to September 2012） were analyzed using multiple-tube fermentation（MTF）and most probable numbers combined with polymerase chain reaction（MPN-PCR）.The MPN-PCR method was found to be significantly more sensitive than the MTF method for detecting Escherichia coli and Enterococcus spp.,and of equal sensitivity for detecting total coliforms when all surface water samples were grouped *** two analytical methods had a strong,significant relationship,but MPN-PCR took only 12-18 hr,compared with the 3-8 days needed using the MTF *** concentrations varied per sampling site but were significantly lower in the mainstream of the Yangtze River than those in the backwater areas of *** water quality of 85.8% of water samples from the mainstream was suitable for use as a centralized potable water source,while the water quality of 52.5% of water samples from the backwater areas was unsuitable for recreational *** between fecal indicator bacteria showed significant correlation（r = 0.636-0.909,p 〈 0.01,n = 200）,while a weak but significant correlation was found between fecal indicators and water turbidity,water temperature,daily inflow,and total dissolved solids（r = 0.237-0.532,p 〈 0.05,n = 200）.The study indicated that MPN-PCR is a rapid and easily performed deoxyribonucleic acid（DNA）-based method for quantitative detection of viable total coliforms,***,and Enterococcus *** surface water.

关键词： Three Gorges Reservoir Fecal indicator bacteria Multiple-tube fermentation MPN-PCR Surface water

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Revisiting Electrolyte Kinetics Differences in Sodium Ion Battery:Are Esters Really Inferior to Ethers?

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Energy & Environmental Materials 2023年第4期6卷 203-210页

作者： Lei Yan Guifang Zhang Jing Wang Qingjuan Ren Linlin Fan Binhua Liu Yujia Wang wenhua Lei Dianbo ruan Qingyin Zhang Zhiqiang Shi Tianjin Key Laboratory of Advanced Fibers and Energy Storage School of Materials Science and EngineeringTiangong UniversityTianjin 300387China Institute of Advanced Energy Storage Technology and Equipment Ningbo UniversityNingbo Zhejiang 315211China School of Chemical Engineering and Technology Tiangong UniversityTianjin 300387China

The ether electrolytes usually outperform ester electrolytes by evaluating sodium-ion batteries(SIBs)rate performance,which is a near-unanimous conclusion of previous studies based on an essential configuration of the half-cell ***,here we find that contrary to consensus,the ester electrolyte shows better Na storage capability than the ether electrolyte in full *** in-depth analysis of three-electrode,symmetric cell,and in situ XRD tests indicates that traditional half-cell test results are unreliable due to interference from Na *** particular,Na electrodes show a huge stability difference in ester and ether electrolytes,and ester electrolytes suffer more severe interference than ether electrolytes,resulting in the belief that esters are far inferior to ether *** seriously,the more accurate three-electrode test would also suffer from Na electrode ***,a“corrected half-cell test”protocol is developed to shield the Na electrode interference,revealing the very close super rate capability of hard carbon in ester and ether *** work breaks the inherent perception that the kinetic properties of ester electrolytes are inferior to ethers in sodium-ion batteries,reveals the pitfalls of half-cell tests,and proposes a new test protocol for reliable results,greatly accelerating the commercialization of sodium-ion batteries.

关键词： corrected half-cell test electrolyte kinetic data hard carbon Na electrode interference sodium-ion batteries

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基于全人教育理念的儿童口腔住培“五度教育法”初探

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中国毕业后医学教育 2023年第2期7卷 169-173页

作者：阮文华苏吉梅黄晓佳叶笑味何晓雷张峰洪云霞浙江大学医学院附属儿童医院国家儿童健康与疾病临床医学研究中心口腔科浙江杭州310052 浙江大学医学院附属儿童医院国家儿童健康与疾病临床医学研究中心教育办浙江杭州310052

目的儿童口腔是口腔住院医师规范化培训(简称住培)中的一个重要内容,要求具有一定的专科疾病诊治能力。由于儿童的身心特点,仅仅具备儿童口腔疾病诊治能力的单一维度要求是不够的,还需要医德修养、健康管理等维度的知识与能力。本研究... 详细信息

目的儿童口腔是口腔住院医师规范化培训(简称住培)中的一个重要内容,要求具有一定的专科疾病诊治能力。由于儿童的身心特点,仅仅具备儿童口腔疾病诊治能力的单一维度要求是不够的,还需要医德修养、健康管理等维度的知识与能力。本研究的目的在于探讨儿童口腔住院医师多维度培训的可能性及意义。方法根据《住院医师规范化培训内容与标准(2022年版)——口腔全科培训细则》,结合全人教育理念及住培带教经验,对儿童口腔住院医师进行五个维度的培训(简称五度教育法),即依法执业态度、医德修养程度、健康管理广度、系统思维深度、学科知识梯度。结果建立儿童口腔住培的“五度教育法”。每一个维度的培训都分为基础与高级两个层次,每个层次设立相应的目标及达标的考核内容。每一个维度之间相互融合,其中依法执业态度、医德修养程度是基础,健康管理广度是保障,系统思维深度及学科知识梯度是根本。结论“五度教育法”对儿童口腔住院医师进行多维度的规范化培训,目标导向明确,层层推进,提高了儿童口腔住培效果。

关键词：儿童口腔医学住院医师规范化培训五度教育法全人教育

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Some discussions about the variable separating method for solving nonlinear models

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Chinese Physics B 2010年第5期19卷 21-28页

作者： ruan Hang-Yu Department of Physics Ningbo University

Through analysing the exact solution of some nonlinear models,the role of the variable separating method in solving nonlinear equations is *** find that rich solution structures of some special fields of these equation come from the nonzero seed ***,these nonzero seed solutions is likely to result in the divergent phenomen for the other field component of the same *** convergence and the signification of all field components should be discussed when someone solves the nonlinear equation using the variable separating method.

关键词： variable separating method nonzero seed solution nonlinear equation

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Extracellular vesicles drive tau spreading in Alzheimer's disease

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Neural Regeneration Research 2022年第2期17卷 328-329页

作者： Zhi ruan Department of Pharmacology and Experimental Therapeutics Boston University School of MedicineBostonMAUSA

Alzheimer's disease(AD) is a progressive and irreversible neurodegenerative disorder that is characterized by memory loss and a decline in activities of daily life. More than 50 million people worldwide are affected by AD, and this number will continue to rise over 100 million within next three decades. Its major pathological features are the extracellular plaque deposits of the β-amyloid peptide and the intracellular flame-shaped neurofibrillary tangle-aggregation of hyperphosphorylated tau-proteins(pTau).

关键词： tau Alzheimer amyloid

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N = 4 Supersymmetric Morse Oscillator and Its Spectrum-Generating Algebra

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Communications in Theoretical Physics 2005年第3X期44卷 499-504页

作者： ruan Dong Department of Physics Tsinghua University Beijing 100084 China Center of Theoretical Nuclear Physics National Laboratory of Heavy Ion Accelerator Lanzhou 730000 China Key Laboratory of Quantum Information and Measurements of Ministry of Education Tsinghua University Beijing 100084 China Institute of Theoretical Physics Academia Sinica Beijing 100080 China

In this paper N = 4 supersymmetry of generalized Morse oscillators in one dimension is studied. Both bound states and scattering states of its four superpartner Hamiltonians are analyzed by using unitary irreducible representations of the noncompact Lie algebra su(1,1). The spectrum-generating algebra governing the Hamiltonian of the N = 4 supersymmetric Morse oscillator is shown to be connected with the realization of Lie superalgebra osp(1,2)or B(0,1) in terms of the variables of a supersymmetric two-dimensional harmonic oscillator.

关键词： generalized Morse oscillator supersymmetric quantum mechanics su(1 1) osp(1 2)

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Breaking Through Bottlenecks for Thermally Conductive Polymer Composites:A Perspective for Intrinsic Thermal Conductivity,Interfacial Thermal Resistance and Theoretics

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Nano-Micro Letters 2021年第7期13卷 118-126页

作者： Junwei Gu Kunpeng ruan MOE Key Laboratory of Material Physics and Chemistry Under Extraordinary Conditions Shaanxi Key Laboratory of Macromolecular Science and TechnologySchool of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’anShaanxi 710072P.R.China

Rapid development of energy,electrical and electronic technologies has put forward higher requirements for the thermal conductivities of polymers and their ***,the thermal conductivity coefficient(λ)values of prepared thermally conductive polymer composites are still difficult to achieve expectations,which has become the bottleneck in the fields of thermally conductive polymer *** at that,based on the accumulation of the previous research works by related researchers and our research group,this paper proposes three possible directions for breaking through the bottlenecks:(1)preparing and synthesizing intrinsically thermally conductive polymers,(2)reducing the interfacial thermal resistance in thermally conductive polymer composites,and(3)establishing suitable thermal conduction models and studying inner thermal conduction mechanism to guide experimental ***,the future development trends of the three above-mentioned directions are foreseen,hoping to provide certain basis and guidance for the preparation,researches and development of thermally conductive polymers and their composites.

关键词： Thermally conductive polymer composites Intrinsic thermal conductivity Interfacial thermal resistance Thermal conduction models Thermal conduction mechanisms

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Probing New Physics at future electron positron Higgs factories via e^+e^-→ Zγ process

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Science China(Physics,Mechanics & Astronomy) 2021年第2期64卷 29-30页

作者： ManQi ruan Institute of High Energy Physics Chinese Academy of SciencesBeijing100049China

Direct searches and precision measurements are the two main complementary methods for identifying New Physics at *** next generation of e^+e^-Higgs factories,including CEPC,FCC-ee,ILC and CLIC,is designed to deliver m... 详细信息

关键词： processes. Higgs positron

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Nonabelian Gauged Linear Sigma Model

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Chinese Annals of Mathematics,Series B 2017年第4期38卷 963-984页

作者： Yongbin ruan Department of Mathematics University of Michigan Ann Arbor MI 48105 USA.

The gauged linear sigma model （GLSM for short） is a 2d quantum field theory introduced by Witten twenty years ago. Since then, it has been investigated extensively in physics by Hori and others. Recently, an algebro-geometric theory （for both abelian and nonabelian GLSMs） was developed by the author and his collaborators so that he can start to rigorously compute its invariants and check against physical predications. The abelian GLSM was relatively better understood and is the focus of current mathematical investigation. In this article, the author would like to look over the horizon and consider the nonabelian GLSM. The nonabelian case possesses some new features unavailable to the ahelian GLSM. To aid the future mathematical development, the author surveys some of the key problems inspired by physics in the nonabelian GLSM.

关键词： GIT quotient Stability condition GLSM

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卡拉胶-变性淀粉-蛋清蛋白复合凝胶的制备及特性表征

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食品科学 2025年第2期46卷 72-80页

作者：崔亚雪李文钊杨晓飞颜凤张家萍阮美娟天津科技大学食品科学与工程学院天津300457

以卡拉胶、羟丙基二淀粉磷酸酯和蛋清粉为原料,制备卡拉胶-羟丙基二淀粉磷酸酯-蛋清蛋白三元复合凝胶并对其凝胶特性和微观结构特性进行表征,同时探究不同改性蛋清粉与复合多糖的相互作用及其对复合凝胶特性的影响。结果显示,与单体卡... 详细信息

以卡拉胶、羟丙基二淀粉磷酸酯和蛋清粉为原料,制备卡拉胶-羟丙基二淀粉磷酸酯-蛋清蛋白三元复合凝胶并对其凝胶特性和微观结构特性进行表征,同时探究不同改性蛋清粉与复合多糖的相互作用及其对复合凝胶特性的影响。结果显示,与单体卡拉胶、卡拉胶/变性淀粉二元复合凝胶相比,多糖-蛋白复合凝胶的凝胶强度和持水性增大,弹性模量G’值显著提高,弛豫时间T_(23)显著缩短,其相对峰面积占比A23减小,可冻结水分含量下降。多糖-蛋白复合凝胶红外光谱出现振幅增大以及峰位弱移现象。利用X射线衍射仪分析凝胶的结晶特性,多糖-蛋白复合凝胶的衍射峰强度减弱,结晶度存在一定程度的降低。利用扫描电子显微镜观察凝胶的微观结构发现复合多糖与蛋清蛋白的相互作用可以促成稳定的复合凝胶,形成致密均匀的凝胶网络结构。与此同时,不同改性蛋清粉(P10、PHG14、PHG21)与多糖结合的三元复合凝胶在以上所运用的各种分析工具结果中呈现出不同程度的改善,其中PHG14、PHG21参与形成的多糖-蛋白复合凝胶表现出相对更显著的效果,具有更稳定的凝胶特性和微观结构特性。

关键词：卡拉胶变性淀粉蛋清蛋白复合凝胶凝胶特性

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