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Highly Sensitive Ammonia Gas Sensors at Room Temperature Based on the Catalytic Mechanism of N,C Coordinated Ni Single-Atom Active Center

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Nano-Micro Letters 2024年第12期16卷 515-531页

作者： Wenjing quan Jia Shi Min Zeng Wen Lv Xiyu Chen Chao Fan Yongwei Zhang Zhou Liu Xiaolu Huang Jianhua Yang Nantao Hu tao Wang Zhi Yang National Key Laboratory of Advanced Micro and Nano Manufacture Technology Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China Department of Micro/Nano Electronics School of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China Shanghai Key Laboratory of Intelligent Sensing and Detection Technology School of Mechanical and Power EngineeringEast China University of Science and TechnologyShanghai 200237People’s Republic of China

Significant challenges are posed by the limitations of gas sensing mechanisms for trace-level detection of ammonia(NH3).In this study,we propose to exploit single-atom catalytic activation and targeted adsorption properties to achieve highly sensitive and selective NH3 gas ***,Ni singleatom active sites based on N,C coordination(Ni-N-C)were interfacially confined on the surface of two-dimensional(2D)MXene nanosheets(Ni-N-C/Ti_(3)C_(2)Tx),and a fully flexible gas sensor(MNPE-Ni-N-C/Ti_(3)C_(2)Tx)was *** sensor demonstrates a remarkable response value to 5 ppm NH3(27.3%),excellent selectivity for NH3,and a low theoretical detection limit of 12.1 *** analysis by density functional calculation reveals that the Ni single-atom center with N,C coordination exhibits specific targeted adsorption properties for ***,its catalytic activation effect effectively reduces the Gibbs free energy of the sensing elemental reaction,while its electronic structure promotes the spill-over effect of reactive oxygen species at the gas-solid *** sensor has a dual-channel sensing mechanism of both chemical and electronic sensitization,which facilitates efficient electron transfer to the 2D MXene conductive network,resulting in the formation of the NH3 gas molecule sensing ***,the passivation of MXene edge defects by a conjugated hydrogen bond network enhances the long-term stability of MXene-based electrodes under high humidity *** work achieves highly sensitive room-temperature NH3 gas detection based on the catalytic mechanism of Ni single-atom active center with N,C coordination,which provides a novel gas sensing mechanism for room-temperature trace gas detection research.

关键词： Gas sensor Single atom Catalytic activation Targeted adsorption End-sealing passivation

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介观统计热力学理论与实验

物理学报 2023年第23期72卷 108-125页

作者：全海涛董辉孙昌璞北京大学物理学院北京100871 中国工程物理研究院研究生院北京100193

对于只有有限自由度的介观小系统,传统的热力学定律是否成立?温度、熵、做功、传热、等温过程、Carnot循环这些概念还是否有效?是否需要对原来适用于宏观系统的传统热力学理论进行修改或扩充、以适用于这样的小系统?在过去近20年里,我... 详细信息

对于只有有限自由度的介观小系统,传统的热力学定律是否成立?温度、熵、做功、传热、等温过程、Carnot循环这些概念还是否有效?是否需要对原来适用于宏观系统的传统热力学理论进行修改或扩充、以适用于这样的小系统?在过去近20年里,我们深入研究了在介观小系统和量子系统中热力学基本概念的推广(例如什么是量子等温过程)以及基本热力学定律的适用性问题.研究表明,在系综平均意义上热力学定律仍然适用于小系统;考虑了Maxwell妖的信息擦除功耗后,热力学第二定律不会被违反;“小系统”的统计热力学具有一些新的特性,由于系统和环境之间的耦合不可忽略,有限系统的平衡态分布偏离正则系综,这可以描述诸如黑洞等小系统的辐射关联及其信息丢失现象;在任意远离平衡的情况下,热力学量的涨落变得十分显著,并且热力学量的分布函数满足一些严格成立的恒等式.这些恒等式定义了所谓的涨落定理,由此通过测量非平衡过程的物理量(如功分布)可以获得平衡过程的物理量相对值(如自由能差等).此外,尽管量子属性和信息论的考虑为统计热力学带来一些有别于经典和传统的特性,有助于理解Gibbs佯谬和Maxwell妖等基本问题,但需要指出的是,量子热机和信息辅助热机的效率并没有超越经典热机.随着在小系统中引入运动方程,热力学和力学之间的联系变得更加紧密,能够从第一性原理出发研究非平衡过程的能量耗散和热机的功率、效率优化及其最优调控微分几何化等问题.在对具体热循环过程熵产生问题的研究中,对得到的功率-效率约束关系进行了系统性的实验检验.

关键词：随机热力学有限时间热力学量子热力学非正则热化

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沥青路面功能性预养护材料的养护时机研究

中国公路学报 2014年第9期27卷 19-24页

作者：林俊涛吴少鹏刘全涛洪锦祥江苏省建筑科学研究院有限公司江苏南京210008 东南大学交通学院江苏南京210096 武汉理工大学硅酸盐建筑材料国家重点实验室湖北武汉430070

为研究功能性预养护材料的养护时机以提高沥青路面预防性养护的效益，选择了3种道路沥青，以压力老化20，40，60，80h模拟沥青胶结料的长期老化；同时对湖北省内5条不同使用时间沥青路面中沥青胶结料进行回收，对比研究了室内模拟老化... 详细信息

为研究功能性预养护材料的养护时机以提高沥青路面预防性养护的效益，选择了3种道路沥青，以压力老化20，40，60，80h模拟沥青胶结料的长期老化；同时对湖北省内5条不同使用时间沥青路面中沥青胶结料进行回收，对比研究了室内模拟老化沥青及回收沥青流变开裂因子、羰基面积因子的变化规律。研究结果表明：流变开裂因子与沥青胶结料的延度具有显著的线性关系，通过流变开裂因子可预测实际路面中沥青胶结料的延度值；延度值5～8cm可作为路面老化开裂的临界值，并可据此得到相应的流变开裂因子与羰基面积因子范围，可为路面预防性养护时机选择提供参考。

关键词：道路工程沥青路面试验研究长期老化养护时机功能性预养护材料

Geochemical characteristics and origins of natural gases in the eastern Cote d’Ivoire Basin,West Africa

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Acta Oceanologica Sinica 2024年第8期43卷 26-36页

作者： Li Li quan Li tao Cheng Songling Yang Yong Rao Xinyu Liu Wenjing Ding CNOOC International Ltd. Beijing 100028China School of Natural Sciences Macquarie UniversitySydneyNSW2109Australia CNOOC Research Institute Beijing 100028China

The gas sources in the eastern Cote d’Ivoire Basin(Tano Basin)are seldom reported and remain controversial due to multiple sets of potential source rocks and poorly documented geochemical characteristics of natural *** marine source rock potential from the Upper Albian to Turonian as well as the molecular composition and the stable carbon isotope composition of natural gases in the eastern Cote d’Ivoire Basin were studied in detail to investigate the origins of natural *** total organic carbon(TOC),hydrogen index(HI),and generation potential(S_(1)+S_(2))of source rocks indicate that both sapropelic source rocks and humic source rocks developed during the late Albian,whereas sapropelic source rocks developed during the Cenomanian and the *** normal order ofδ^(13)CH_(4)<δ^(13)C_(2)H6<δ^(13)C_(3)H_(8)(δ^(13)C_(1)<δ^(13)C_(2)<δ^(13)C_(3)),the relationship between C_(2)/C_(3)molar ratio andδ^(13)C_(2)-δ^(13)C_(3),and the plot ofδ^(13)C_(1)versus C_(1)/(C_(2)+C_(3))collectively show that the natural gases are thermogenic due to the primary cracking of kerogen,including the typical oil-associated gases from Well D-1,the mixed oil-associated gases and coal-derived gases from Well G-1 and Well *** on the plot ofδ^(13)C_(1)versusδ^(13)C_(2)and the established relationship betweenδ^(13)C_(1)and equivalent vitrinite reflectance(Ro),we proposed that the natural gases are in a mature stage(Ro generally varies from 1.0%to 1.3%).Combined with results of basin modelling and oil-to-source correlation,the transitional to marine source rocks during the late Albian were thought to have made a great contribution to the natural *** study will make a better understanding on petroleum system in the eastern Cote d’Ivoire Basin.

关键词： marine source rocks potential molecular composition stable carbon isotopes Upper Albian Tano Basin

Detection of serum tumor markers in the diagnosis and treatment of patients with pancreatic cancer

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Hepatobiliary & Pancreatic Diseases International 2004年第3期3卷 464-468页

作者： Xiao-Ting Jiang, Hou-quan tao and Shou-Chun Zou Clinical Medical Laboratory and Depart-ment of Surgery , Zhejiang Provincial People’ sHospital, Hangzhou 310014 , China Clinical Medical Laboratory Zhejiang Provincial People's Hospital Hangzhou 310014 China. Jiangxiaoting2002@***

BACKGROUND: Although a variety of tumor markers areavailable for diagnosis of pancreatic cancer, their sensitivityand specificity have not yet been ideal. The aims of thisstudy was to detect a panel of serum tumor markers and toevaluate their significance in the diagnosis and prognosis ofpancreatic cancer ***: Eight serum tumor markers including AFP,CEA, CA-50, CA72-4, CA-125, CA153, CA19-9 and CA242were detected in 129 patients with pancreatic cancer by usingchemiluminescence immunoassay, immunofluorescence as-say and immunoradiometric assay, respectively. The levelsof these markers were compared in 99 patients with non-pancreatic malignant tumor, 63 patients with other benigndiseases, and 27 patients with pancreatic cancer after ***: Among the 8 tumor markers, CA19-9, CA242,CA-50, and CA72-4 were more sensitive in the diagnosis ofpancreatic cancer. Parallel combined testing could increasethe diagnostic sensitivity to 89.2%, and serial combined exa-mination could increase the diagnostic specificity to 92.3%.The serum tumor markers levels were decreased significant-ly after radical tumor ***: Serum CA19-9, CA242, CA-50, andCA72-4 are the preferred tumor markers to be used in thediagnosis and follow-up of operated cases of pancreaticcancer. Testing of a panel of multiple serum tumor mark-ers may increase the sensitivity and specificity in the diag-nosis of pancreatic cancer.

关键词： tumor markers pancreatic cancer diagnosis combined testing

2008年中国足球超级联赛成绩与技术统计的因子分析

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数理统计与管理 2011年第2期30卷 370-380页

作者：全涛孙雪翰临沂大学体育学院山东临沂276005

通过查阅资料,收集、并整理了2008年中超联赛15支队伍210场比赛的技术统计.运用因子分析法对比赛成绩与技术统计的关系进行了研究,命名并分析影响比赛成绩的5个因子.旨在揭示统计指标与比赛成绩的特点与规律,为我国足球运动的理论与训... 详细信息

通过查阅资料,收集、并整理了2008年中超联赛15支队伍210场比赛的技术统计.运用因子分析法对比赛成绩与技术统计的关系进行了研究,命名并分析影响比赛成绩的5个因子.旨在揭示统计指标与比赛成绩的特点与规律,为我国足球运动的理论与训练提供科学依据。

关键词：统计指标比赛成绩因子分析

Geographic variation in body size and sexual size dimorphism in an spinosa frog,Paa spinosa

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Geographic variation in body size and sexual size dimorphism...

浙江省第三届生物多样性保护与可持续发展研讨会

作者： Zheng Rong-quan Liu Chun-tao (Institute of ecology, Zhejiang Normal University, Jinhua 321004)

We describe the spatial pattern of variation in body size and sexual size dimorphism. A conservative approach used to discern the effects of precipitation and temperature by applying sequential regression. Variable priorities were assigned according to their bivarite correction with body size, except for rainfall and its interactions that entered into the model last. Rainfall and average maximum

关键词： Paa spinosa Geographic variation sexual size dimorphism

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品读胶东海草民居审美意蕴

安徽农业科学 2011年第1期39卷 345-346页

作者：李泉涛青岛理工大学艺术学院山东青岛266033

从分析胶东海草民居的审美意蕴入手,进行实地调研,并以现存民居为实例,挖掘传统民居中普遍而朴素的生态价值、现实意义及可持续性,以期为具有生态价值的新民居设计提供理论及实践依据。

关键词：胶东海草民居生态美和谐美民俗美

中国急性脑卒中随机对照试验证据现状与趋势分析

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中华医学杂志 2013年第43期93卷 3433-3437页

作者：何莎刘鸣曾泉滔四川大学华西医院神经内科成都610041

目的了解中国大陆急性脑卒中随机对照治疗试验（RCTs）的现状与发展趋势,为未来国内临床试验设计及指南制定提供参考依据.方法通过电子检索国内外8个数据库,纳入1996年1月至2013年5月国内外发表的中国大陆急性脑卒中（缺血性脑卒中、... 详细信息

目的了解中国大陆急性脑卒中随机对照治疗试验（RCTs）的现状与发展趋势,为未来国内临床试验设计及指南制定提供参考依据.方法通过电子检索国内外8个数据库,纳入1996年1月至2013年5月国内外发表的中国大陆急性脑卒中（缺血性脑卒中、脑出血、蛛网膜下腔出血）随机对照治疗试验,对所纳入的试验进行质量分析.结果共纳入试验13 493个.17年来发表的RCTs呈递增趋势.研究的卒中类型分别为缺血性脑卒中（63.9%,8623/13 493）,脑出血（30.8%,4157/13 493）,蛛网膜下腔出血（5.3%,713/13 493）.纳入的试验中,多中心随机对照试验共52个,占0.4%（52/13 493）;61.5%（32/52）为药物试验,其中西药占65.6%（21/32）,中药34.4%（11/32）;非药物研究38.5%（20/52）,其中物理疗法 8个,手术7个,针灸5个;样本量为500例以上的多中心随机安慰剂对照试验仅有3个.采用安慰剂对照的多中心药物RCT有13个,采用双盲双模拟阿司匹林对照的多中心试验1个.采用了分组隐藏的非药物RCT有3个.主要结局采用了远期终点指标的多中心药物试验和非药物试验各2个.结论近17年来,中国大陆急性脑卒中治疗措施的临床试验发表数量增长明显,但有安慰剂对照或分组隐藏的多中心随机对照试验数量仍非常有限,提高急性脑卒中治疗试验的设计与实施质量需引起更多重视.

关键词：脑卒中随机对照试验中国大陆