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钻井液用胺基聚醚伯胺含量测定方法研究

精细石油化工进展 2024年第4期25卷 54-58页

作者：毛世发刘晓燕钟灵马文英中石化中原石油工程有限公司河南濮阳457001

胺基聚醚作为一种高效抑制剂,在钻井液中的应用越来越广,但对于胺基聚醚的理化性能研究较少,尤其是缺乏对抑制性起到关键作用的胺基含量的测定。本文在建立总胺值测定方法基础上,研究胺基聚醚中伯胺含量的测定方法。通过实验分析验证了... 详细信息

胺基聚醚作为一种高效抑制剂,在钻井液中的应用越来越广,但对于胺基聚醚的理化性能研究较少,尤其是缺乏对抑制性起到关键作用的胺基含量的测定。本文在建立总胺值测定方法基础上,研究胺基聚醚中伯胺含量的测定方法。通过实验分析验证了亚硝酸钠滴定法、范斯莱克集气法、水杨醛法测定胺基聚醚伯胺含量的可行性,重点研究了水杨醛法,考察了煮沸过程及待测样品中含水量对测定结果的影响,并从水杨醛加量、养护时间、养护温度等方面对水杨醛法测定胺基聚醚伯胺含量进行了优化,构建了钻井液用胺基聚醚伯胺含量测定方法,并对不同分子量、不同官能度的胺基聚醚伯胺含量进行测定,相对平均偏差均不超过1%。

关键词：胺基聚醚伯胺含量相对平均偏差钻井液水杨醛法

Sodium Stress in the Halophyte Thellungiella halophila and Transcriptional Changes in a thsos1-RNA Interference Line

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Journal of Integrative Plant Biology 2007年第10期49卷 1484-1496页

作者： Dong-Ha Oh Qingqiu Gong Alex Ulanov Quan Zhang Youzhi Li wenying ma Dae-Jin Yun Ray A. Bressan Hans J. Bohnert Division of Applied Life Science (BK21 Program) and Environmental Biotechnology National Core Research Center Graduate School of Gyeongsang National University Jinju 660-701 Korea Departments of Plant Biology and of Crop Sciences University of Illinois at Urbana-Champaign Urbana IL 61801 USA Key Laboratory of Plant Stress Research College of Life Science Shandong Normal University Jinan 250014 China Key Laboratory of the Ministry of Education for Microbial and Plant Genetic Engineering Guangxi University Nanning 530005 China Department of Horticulture and Landscape Architecture Purdue University West-Lafayette IN 47907 USA

The plasma membrane Na＋/H＋-antiporter salt overly sensitive1 （SOS1） from the halophytic Arabidopsis-relative Thellungiella halophila （ThSOS1） shows conserved sequence and domain structure with the orthologous genes from Arabidopsis thaliana and other plants. When expression of ThSOSt was reduced by RNA interference （RNAi）, pronounced characteristics of salt-sensitivity were observed. We were interested in monitoring altered transcriptional responses between Thellungiella wild type and thsost-4, a representative RNAi line with particular emphasis on root responses to salt stress at 350 mmol/L NaCI, a concentration that is only moderately stressful for mature wild type plants. Transcript profiling revealed several functional categories of genes that were differently affected in wild-type and RNAi plants. Down-regulation of SOS1 resulted in different gene expression even in the absence of stress. The pattern of gene induction in the RNAi plant under salt stress was similar to that of glycophytic Arabidopsis rather than that of wild type Thellungiella. The RNAi plants failed to down-regulate functions that are normally reduced in wild type Thellungiella upon stress and did not up-regulate functions that characterize the Thellungiella salt stress response. Metabolite changes observed in wild type Thellungiella after salt stress were less pronounced or absent in RNAi plants. Transcript and metabolite behavior suggested SOS1 functions including but also extending its established function as a sodium transporter. The down-regulation of ThSOS1 converted the halophyte Thellungiella into a salt-sensitive plant.

关键词： salt stress salt overly sensitive1 RNA interference Thellungiella halophila transcript profiling.

Defects in photoreduction reactions:Fundamentals,classification,and catalytic energy conversion

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eScience 2024年第3期4卷 44-64页

作者： Yinghui Wang wenying Yu Chunyang Wang Fang Chen Tianyi ma Hongwei Huang Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid WastesNational Laboratory of Mineral MaterialsSchool of Materials Science and TechnologyChina University of Geosciences(Beijing)Beijing 100083China School of Science RMIT UniversityMelbourneVIC 3000Australia

Powered by optical energy,photocatalytic reduction for fuel production promises to be an ideal long-term solution to a number of key energy *** with enhanced light absorption,fast electron/hole separation rates,and exposed activity sites are essential to improve photocatalytic *** are constrained by their own intrinsic properties and have limited performance in photocatalysis,but defect engineering provides an opportunity to modulate the physical and chemical properties of *** engineering has been shown to be effective in regulating electron distribution and accelerating photocatalytic kinetics during *** review introduces the definition and categorization of defects,then explains the main effects of defect engineering on photoabsorption,carrier separation/migration,and surface reduction *** then review the milestones in the design of defect-engineered photocatalysts for key chemical reactions,including hydrogen evolution,CO_(2)reduction,and N_(2)reduction,and tabulate their respective effects on catalytic ***,we provide insights and perspectives on the challenges and potential of defect engineering for photoreduction reactions.

关键词： Defect engineering Charge separation Hydrogen evolution CO_(2)reduction N_(2)reduction

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高Q值THz类EIT超材料及传感特性研究

光电工程 2018年第11期45卷 83-90页

作者：马长伟马文英谭毅唐雨竹成都信息工程大学通信工程学院四川成都610225 四川大学电子信息学院四川成都610065

设计了一种具有类电磁诱导透明(EIT)效应的高Q值太赫兹超材料。该结构单元由上下平行的双金属线及中间垂直的单金属线组成。分别对单金属线、双金属线及组合结构进行仿真,分析了组合结构中金属线的位置和尺寸对透射率及品质因数Q的影响... 详细信息

设计了一种具有类电磁诱导透明(EIT)效应的高Q值太赫兹超材料。该结构单元由上下平行的双金属线及中间垂直的单金属线组成。分别对单金属线、双金属线及组合结构进行仿真,分析了组合结构中金属线的位置和尺寸对透射率及品质因数Q的影响。结果表明,随着单金属线的水平移动产生了类EIT效应,透射率和Q值随着偏移距离的增大而发生变化,通过调整结构和尺寸可以实现不同Q值。通过优化,当偏移距离为8μm时,在0.73 THz附近得到一个3d B带宽约为11.56GHz的透明窗,相应的Q值为63.09,其透射率为0.50。最后,对谐振器的传感特性进行了测量,其折射率灵敏度为60.69 GHz/RIU,FOM值为5.25/RIU,具有优异的传感特性。

关键词：高Q值电磁诱导透明太赫兹超材料传感特性

Astrocytic pyruvate dehydrogenase kinase-lactic acid axis involvement in glia-neuron crosstalk contributes to morphine-induced hyperalgesia in mice

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Fundamental Research 2024年第4期4卷 820-828页

作者： Xiaqing ma Qi Qi wenying Wang Min Huang Haiyan Wang Limin Luo Xiaotao Xu Tifei Yuan Haibo Shi Wei Jiang Tao Xu Department of Anesthesiology Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai 200233China Department of Anesthesiology Suzhou Hospital of Anhui Medical UniversitySuzhou 234000China Department of Anesthesiology Affliated Hospital of Nantong UniversityMedical School of Nantong UniversityNantong 226001China Shanghai Key Laboratory of Psychotic Disorders Shanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghai 200030China Shanghai Key Laboratory of Sleep Disordered Breathing Shanghai 200233China

The activation of spinal astrocytes accounts for opioid-induced hyperalgesia(OIH),but the underlying mechanisms remain *** presence of astrocyte-neuron lactate shuttle(ANLS)makes astrocytes necessary for some neural function and *** aim of this study was to explore the role of ANLS in the occurrence and maintenance of *** 7 days consecutive morphine injection,a mice OIH model was established and astrocytic pyruvate dehydrogenase kinase 4(PDK4),phosphorylated pyruvate dehydrogenase(p-PDH)and accumulation of L-lactate was elevated in the spinal dorsal *** administration of inhibitors of PDK,lactate dehydrogenase 5 and monocarboxylate transporters to decrease the supply of L-lactate on neurons was observed to attenuate hypersensitivity behaviors induced by repeated morphine administration and downregulate the expression of markers of central sensitization in the spinal dorsal *** astrocyte line and the neuronal line were co-cultured to investigate the mechanisms in *** this study,we demonstrated that morphine-induced hyperalgesia was sustained by lactate overload consequent upon aberrant function of spinal *** this process,PDK-p-PDH-lactate axis serves a pivotal role,which might therefore be a new target to improve long-term opioid treatment strategy in clinical practice.

关键词： Pyruvate dehydrogenase kinase 4 Phosphorylated pyruvate dehydrogenase Astrocyte-neuron lactate shuttle Opioid-induced hyperalgesia Lactate

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纳博科夫与文学自译

俄罗斯文艺 2016年第3期 76-82页

作者：段峰马文颖四川大学外国语学院

自译在纳博科夫的文学翻译中占据了重要的部分。他在自译和他译中采取了不同的翻译方法,但他在自译中所采取的创造性翻译方法则真正体现了他作为作家和翻译家的追求。他在翻译中所表现的不同语言之间的互文性和不同文化之间的对话性使... 详细信息

自译在纳博科夫的文学翻译中占据了重要的部分。他在自译和他译中采取了不同的翻译方法,但他在自译中所采取的创造性翻译方法则真正体现了他作为作家和翻译家的追求。他在翻译中所表现的不同语言之间的互文性和不同文化之间的对话性使他形成了独特的译文风格,亦成为自译研究的重要对象。

关键词：自译自译方法互文性对话风格

急性小脑梗死患者静息态脑功能与认知功能的改变

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中华神经科杂志 2019年第4期52卷 281-287页

作者：范琳刘颖马文颖石静萍泰州市人民医院神经内科江苏泰州225300 南京医科大学附属脑科医院神经内科 210029

目的应用静息态功能磁共振成像(rs-fMRI),采用低频振幅和功能连接方法探讨急性小脑梗死患者静息态脑功能与认知功能的改变。方法对2017年5月至2018年6月在泰州市人民医院或南京医科大学附属脑科医院住院治疗的急性小脑后叶梗死患者(32例... 详细信息

目的应用静息态功能磁共振成像(rs-fMRI),采用低频振幅和功能连接方法探讨急性小脑梗死患者静息态脑功能与认知功能的改变。方法对2017年5月至2018年6月在泰州市人民医院或南京医科大学附属脑科医院住院治疗的急性小脑后叶梗死患者(32例)以及同期招募的健康对照者(34名)进行认知功能评估及rs-fMRI扫描,比较其低频振幅和功能连接的差异,并通过Pearson相关分析了解功能连接值与认知功能的相关性。结果相比健康对照组,小脑梗死组患者的蒙特利尔认知评估量表评分[(23.97±6.04)分与(26.56±2.93)分,t=-2.237,P=0.029)、听觉词语学习测试(RAVLT)评分[3(2)分与6(2)分,Z=-4.136,P=0.000]显著降低,连线测验-B耗时明显增高[(251.56±112.62)s与(164.76±52.37)s,t=4.054,P=0.000]。功能磁共振成像结果发现小脑梗死组较对照组低频振幅在右侧额叶、左侧海马、右侧扣带回和小脑后叶有显著改变。以大脑低频振幅明显改变的脑区为感兴趣区行全脑功能连接,并进行Pearson相关分析提示,记忆评估-RAVLT评分和左海马至左侧额叶功能连接值之间呈显著正相关(r=0.272,P=0.031);执行能力-连线测验B耗时和右侧扣带回与右下顶叶的功能连接值也呈正相关(r=0.410,P=0.023)。结论急性小脑梗死患者存在认知功能障碍,主要表现在记忆力和执行功能方面。小脑梗死患者低频振幅及全脑功能连接的异常改变提示其关键脑区静息态自发性神经元活动的改变,且左侧海马和右侧扣带回局部异常连接的改变可能在小脑卒中引起的相关认知功能障碍中起着重要作用。

关键词：磁共振成像卒中认知障碍

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浅析传统游戏的价值和拯救措施

科教导刊 2014年第1期 50-51页

作者：马文影绥化学院教育学院黑龙江·绥化 152061

传统游戏是集民间布衣智慧于一身，在人们长期的共同生活中形成的，经过时间检验流传至今的一种休闲活动。传统游戏具有鲜明的地方特色，并且曾经在相当长的一段时期内非常的流行。①但是随着时间的推移、社会的进步以及科技的发展，传... 详细信息

传统游戏是集民间布衣智慧于一身，在人们长期的共同生活中形成的，经过时间检验流传至今的一种休闲活动。传统游戏具有鲜明的地方特色，并且曾经在相当长的一段时期内非常的流行。①但是随着时间的推移、社会的进步以及科技的发展，传统游戏不断地衰落，时至今日已经越来越少的人参与到传统游戏中。因此，如何阻止传统游戏的日渐衰落，以及如何使得其更加发扬光大，已经成为中华文化保护者心中不断涌现的疑问。本文将详细地介绍传统游戏的历史和现状及在现今条件下如何解决传统游戏的尴尬局势，如何体现传统游戏的价值。

关键词：传统游戏中华文化价值拯救措施

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《汉宫秋》新议

阜阳师范学院学报（社会科学版） 2009年第1期 38-41页

作者：马文莹云南艺术学院戏剧学院昆明650101

本文通过对马致远《汉宫秋》的重新解读,阐述该剧在创设"昭君和番"的历史背景,塑造崭新的人物形象以及在处理民族关系问题上的卓越见解与宝贵贡献,从而进一步认识这部剧作的思想意义和艺术价值。

关键词：《汉宫秋》昭君和番背景设置人物形象民族关系