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Artificial intelligence-assisted colorimetry for urine glucose detection towards enhanced sensitivity,accuracy,resolution,and anti-illuminating capability

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Nano Research 2023年第10期16卷 12084-12091页

作者： Fan Feng Zeping Ou Fangdou zhang Jinxing Chen Jiankun Huang Jingxiang Wang Haiqiang Zuo Jingbin Zeng State Key Laboratory for Heavy Oil Processing College of Chemistry and Chemical EngineeringChina University of Petroleum(East China)Qingdao 266580China College of New Energy China University of Petroleum(East China)Qingdao 266580China institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou 215123China Qingdao Fifth People’s Hospital Qingdao 266580China

Colorimetry often suffers from deficiency in quantitative determination,susceptibility to ambient illuminance,and low sensitivity and visual resolution to tiny color *** offset these deficiencies,we incorporate deep machine learning into colorimetry by introducing a convolutional neural network(CNN)with powerful parallel processing,self-organization,and self-learning *** a proof of concept,a plasmonic nanosensor is proposed for the colorimetric detection of glucose by coupling Benedict’s reagent with gold nanoparticles(AuNPs),which relies on the assemble of AuNPs into dendritic nanochains by *** distinct difference of refractive index between Cu2O and Au and the localized surface plasmon resonance coupling effect among AuNPs leads to a broad spectral shift as well as abundant color changes,thereby providing sufficient data for selflearning enabled by machine *** CNN is then used to fully diversify the learning and training of the images from standard samples under different ambient conditions and to obtain a classifier that can not only recognize tiny color changes that are imperceptible to human eyes,but also exhibit high accuracy and excellent anti-environmental interference *** classifier is then compiled as an application(APP)and implanted into a smartphone with Android environment.306 clinical urine samples were detected using the proposed method and the results showed a satisfactory correlation(87.6%)with that of a standard blood glucose test *** importantly,this method can be generalized to other applications in colorimetry,and more broadly,in other scientific domains that involve image analysis and quantification.

关键词： artificial intelligence colorimetry urine glucose plasmonic nanosensor smartphone platform

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渭河盆地西安凹陷地热田热储特征及开发方式

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地质学报 2023年第10期97卷 3456-3474页

作者：刘润川任战利任文波杨瑞涛熊文学白奋飞王琨李建明王亚奇张莹西北大学地质学系陕西西安710069 西安市多种能源资源勘探开发重点实验室陕西西安710069 中科院地质与地球物理研究所岩石圈演化国家重点实验室北京100029 陕西延长石油国际能源化工有限公司陕西西安710065 陕西延长石油(集团)有限责任公司研究院陕西西安710065 甘肃煤炭地质勘察院甘肃兰州730099

热源、热储层(砂体厚度、孔隙度、渗透率)、地温场等是影响地热资源评价的重要因素。本文以渭河盆地西安凹陷-西安市延长石油西化小区为例,在收集前人资料的基础上,应用地层测温、测井、岩芯分析等资料,分析了研究区地温场特征、热储层... 详细信息

热源、热储层(砂体厚度、孔隙度、渗透率)、地温场等是影响地热资源评价的重要因素。本文以渭河盆地西安凹陷-西安市延长石油西化小区为例,在收集前人资料的基础上,应用地层测温、测井、岩芯分析等资料,分析了研究区地温场特征、热储层特征及地热资源量,运用多种参数对热储层有利区进行了综合评定。研究结果表明延长石油西化小区属地热异常区,地温梯度为3.5℃/100 m;研究区张家坡组、蓝田灞河组砂泥岩互层发育,砂厚分布在40~140 m之间,平均孔隙度分布在15.68%~30.3%之间,蓝田灞河组砂层厚度、地层热量、含水量和总热量均高于三门组和张家坡组地层,地热开发条件最好;综合考虑砂体厚度、地层含水量、地温梯度、地温、热储层物性因素,认为西安凹陷延长石油西化小区地热开发应选择蓝田灞河组为主要目的层段,最优的地热开发方式应采用采灌平衡法进行地热开采,综合考虑研究区更宜选择中深层地埋管井下换热方式进行地热资源开发。

关键词：地温梯度热储层特征地热资源西安凹馅渭河盆地

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鄂尔多斯盆地本溪组沉积物物源探讨及其构造意义

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沉积学报 2019年第5期37卷 1087-1103页

作者：贾浪波钟大康孙海涛严锐涛张春林莫午零邱存董媛李兵廖广新中国石油大学(北京)油气资源与探测国家重点实验室北京102249 西安石油大学地球科学与工程学院西安710000 中国石油勘探开发研究院河北廊坊065000 中石化江汉油田分公司采气工程技术服务中心湖北潜江433124

鄂尔多斯盆地在经历了古生代抬升剥蚀之后,在晚古生代晚期开始沉降并沉积了海陆过渡相本溪组碎屑岩.为阐明该套碎屑岩的物源体系特征,基于露头、岩芯、分析化验等多种分析测试手段,分析了本溪组砾岩分布、轻矿物碎屑组分、石英阴极发光... 详细信息

鄂尔多斯盆地在经历了古生代抬升剥蚀之后,在晚古生代晚期开始沉降并沉积了海陆过渡相本溪组碎屑岩.为阐明该套碎屑岩的物源体系特征,基于露头、岩芯、分析化验等多种分析测试手段,分析了本溪组砾岩分布、轻矿物碎屑组分、石英阴极发光、重矿物特征及碎屑锆石U-Pb年龄分布特征,识别了本溪组平面上不同物源体系,继而确定了不同物源体系的母岩类型及本溪组沉积时期盆地南部构造演化特征;研究表明本溪组沉积时期,鄂尔多斯盆地整体南北双向供源,其中北部物源供给相对较强,进一步划分为四个子物源体系,西北物源母岩主要为变质岩和少量火山岩,东北部地区母岩主要为酸性侵入岩,西南部地区物源主要为高级变质岩、部分岩浆岩和少量沉积岩,东南部地区主要为高级变质岩.同时在本溪组沉积时期,南部物源影响范围可达盆地中部地区,北秦岭陆块该时期已与华北板块南缘发生碰撞是南部物源体系重要组成部分.

关键词：物源分析沉积学分析碎屑锆石本溪组鄂尔多斯盆地

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基于TOPSIS的原油储罐风险分级预警

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油气储运 2024年第6期43卷 641-648页

作者：武刚张庶鑫罗金恒李丽锋徐日段庆全王熠凡中国石油集团工程材料研究院有限公司·油气钻采输送装备全国重点实验室中国石油大学(北京)安全与海洋工程学院

[目的]原油储罐目前普遍趋向于大型化、集中化。由于原油理化性质与储罐材料构件的复杂性,造成储罐的高风险性,需提高储罐罐区风险管理能力。应用现有主流的基于风险的检验技术(Risk Based Inspection,RBI)对储罐风险进行评价较为复杂,... 详细信息

[目的]原油储罐目前普遍趋向于大型化、集中化。由于原油理化性质与储罐材料构件的复杂性,造成储罐的高风险性,需提高储罐罐区风险管理能力。应用现有主流的基于风险的检验技术(Risk Based Inspection,RBI)对储罐风险进行评价较为复杂,其对于现场数据要求较多,且设备因素评价中缺少针对储罐相关附件的影响分析。[方法]提出一种原油储罐分级预警体系,通过建立基于逼近理想解排序方法(Technique for Order Preference by Similarity to an Ideal Solution,TOPSIS)的储罐风险分级预警体系模型,实现对储罐风险的综合评估与分级预警:①建立储罐风险评估指标体系,包括人、设备、环境及管理因素4个一级指标以及若干二级、三级指标;②应用层次分析法(Analytic Hierarchy Process,AHP)对不同层次指标进行赋权,并利用TOPSIS方法对储罐进行相对贴近度计算;③根据相对贴近度结果对储罐进行风险排序与分级预警。[结果]以中国西部某原油储备库区4个原油储罐为研究对象进行风险分级预警,TOPSIS评估结果与API581-2016《基于风险的检验》、EEMUA159-2017《地上平底储罐:检查维护和修理指南》两种标准的风险评估结果基本一致,可有效预警,且实施便捷、评价指标更为全面。[结论]研究成果能够为罐区巡检、安排储罐大修周期提供合理参考。(图2,表8,参20)

关键词：原油储罐逼近理想解排序方法 TOPSIS 风险评估层次分析法分级预警

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Automatic estimation of traveltime parameters in VTI mediausing similarity-weighted clustering

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petroleum Science 2020年第2期17卷 363-375页

作者： Shi-You Liu Ying-Zhao zhang Chao Li Wan-Yuan Sun Gang Fang Guo-Chang Liu Zhanjiang Branch China National Offshore Oil Corporation Ltd.Zhanjiang 524000GuangdongChina State Key Laboratory of petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing 102249China Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology Ministry of Land and ResourcesQingdao Institute of Marine GeologyChina Geological SurveyQingdao 266071ShandongChina

Compared with hyperbolic velocity estimation methods,nonhyperbolic methods(such as shifted hyperbola)are better choices for large offsets or vertical transverse isotropy(VTI)*** local seismic event slope contains subsurface information,they can be used to estimate zero-offset two-way traveltime and normal moveout *** traditional velocity estimation methods require a great deal of manual work and are also prone to human *** order to estimate the traveltime parameters for VTI media automatically,in this paper,we propose to use predictive painting and similarity-weighted clustering to obtain traveltime *** predictive painting is used to estimate zero-offset two-way traveltime,and the shifted-hyperbola traveltime equation is used to obtain velocity and anisotropy *** first map local slopes to zero-offset two-way traveltime and moveout-parameters domain and then use similarity-weightedk-means clustering to find the maximum likelihood anisotropy parameters of the main subsurface *** order to demonstrate that,we apply the similarity-weighted clustering method to synthetic and field data examples and the results are of higher accuracy when compared to the ones obtained using multiparameter semblance-based *** estimation error section,it can be seen that the estimation error of multiparameter semblance-based method is about 3-5 times that of the proposed method.

关键词： Nonhyperbolic moveout Predictive painting k-means clustering Seismic velocity analysis Vertical transverse isotropy

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Piezoluminescent devices by designing array structures

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Science Bulletin 2019年第3期64卷 151-157页

作者： Luke Bao Xiaojie Xu Yong Zuo Jing zhang Fei Liu Yifan Yang Fan Xu Xuemei Sun Huisheng Peng State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science and Laboratory of Advanced Materials Fudan University institute of Mechanics and Computational Engineering Department of Aeronautics and Astronautics Fudan University

Mechanoluminescence has attracted increasing attentions because it can convert the kinetic energy during human daily motions into light to be used in sensors and displays. However, its practical applications are still hindered by the weak brightness and limited color while under large forces. Herein, we developed novel piezoluminescent devices(PLDs) which could effectively emit visible light under low pressing forces through the stress-concentration and enhancing deformation on the basis of carefully-designed array structures. The emitting colors were also tunable by using bilayer luminescent film under different pressures. This work not only provides a new strategy to effectively harvest mechanical energy into light,but also presents a scalable, low-cost and color-tunable PLD which shows great potentials in various applications such as luminescent floors, shoes and stress-activated displays.

关键词： Mechanoluminescence Piezoluminescent device Array structure Color-tunable

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Effect of current density on groundwater arsenite removal performance using air cathode electrocoagulation

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Frontiers of Environmental Science & Engineering 2021年第6期15卷 211-219页

作者： Yanxiao Si Fang zhang Chen Hong Guanghe Li Haichuan zhang Dun Liu School of Environment and State Key Joint Laboratory of Environment Simulation and Pollution Control Tsinghua UniversityBeijing 100084China Surface Engineering Division Sinopec Petroleum Exploration and Production Research InstituteBeijing 100083China School of Energy and Environmental Engineering University of Science and Technology BeijingBeijing 100083China

Naturally occurring arsenic enrichment in groundwater poses a huge threat to human *** cathode electrocoagulation(ACEC)has recently been proposed to enhance As(Ⅲ)oxidation and lower energy *** this study,ACEC,EC/O_(2) and EC/N_(2) were evaluated with different current densities from 1 to 8 mA/cm^(2) to investigate the effect on As(Ⅲ)removal in different redox *** density had no appreciable effect on arsenic removal efficiency given the same charge in ACEC because the concentration ratio of Fe/H2O_(2) under different current densities remained ***,in EC/O_(2) and EC/N_(2),As(Ⅲ)removal was inhibited at higher current densities(4–8 mA/cm^(2)),likely because more Fe(Ⅱ)competed with As(Ⅲ)for the oxidant,leading to less effective oxidation of As(Ⅲ).In all EC systems,the$OH units generated per power consumption reached the highest value at the lowest current *** with other EC systems,the ACEC system showed lower energy consumption at all current densities due to the low energy consumption of the electrode reaction and more free radical generation.A lower current density saved more energy at the expense of time,showing the trade-off relationship between energy consumption and removal *** operation costs for As(Ⅲ)removal under optimal conditions were calculated as 0.028$/m^(3) for ACEC,0.030$/m^(3) for EC/O_(2),and 0.085$/m^(3) for EC/N_(2)

关键词： Electrocoagulation Air cathode Arsenic Current density Energy consumption

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Highly sensitive colorimetric detection of NH3 based on Au@Ag@AgCl core-shell nanoparticles

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Chinese Chemical Letters 2021年第9期32卷 2807-2811页

作者： Zhiwei Qiu Yitong Xue Jiyong Li Yunzhi zhang Xinyi Liang Congying Wen Houjian Gong Jingbin Zeng College of petroleum Engineering China University of Petroleum(East China)Qingdao 266580China College of Science China University of Petroleum(East China)Qingdao 266580China petroleum Engineering Technology Research institute Sinopec Shengli Oilfield CompanyDongying 257067China

Abstract:As an important component of the atmosphere,ammonia(NH_(3))plays a very important role in maintaining the balance of ***,it is also one of the most toxic gases that can cause damage to the human respiratory system and mucous membranes even at low *** such,development of highly sensitive and selective NH_(3)sensors is of high significance for environmental monitoring and health ***,we have synthesized Au@Ag@Ag Cl core-shell nanoparticles(NPs)by oxidative etching and precipitating Au@Ag core-shell NPs using FeCl3 and further used them as optical probes for the colorimetric detection of NH_(3).The sensing mechanism is based on the fact that the etching of NH_(3)on AgCl and Ag shell leads to the variations of ingredients and core-to-shell ratio of the Au@Ag@AgCl NPs,thereby inducing noticeable spectral and color *** replacing the outmost layer of Ag with AgCl,not only is the stability of the sensor against oxygen significantly enhanced,but also is the sensitivity of the method *** method exhibits good linear relationship for the detection of NH_(3)from 0 to 5000 mmol/L with the limit of detection of 6.4 mmol/*** method was successfully applied to the detection of simulated air polluted by NH_(3),indicating its practical applicability for environmental *** method shows great potential for on-site NH_(3)detection particularly in remote area,where a simple,fast,low-cost,and easy-to-handle method is highly desirable.

关键词： NH3 detection Au@Ag@AgCl nanoparticles Localized surface plasmon resonance Etching Colorimetric sensor

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Radiocarbon isotope technique as a powerful tool in tracking anthropogenic emissions of carbonaceous air pollutants and greenhouse gases:A review

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Fundamental Research 2021年第3期1卷 306-316页

作者： Gan zhang Junwen Liu Jing Li Pingyang Li Nannan Wei Buqing Xu State Key Laboratory of Organic Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China CAS Center for Excellence in Deep Earth Science Guangzhou 510640China institute for Environmental and Climate Research Jinan UniversityGuangzhou 511443China School of Nuclear Science and Technology University of South ChinaHengyang 421001China university of Chinese Academy of Sciences Beijing 100049China

Air pollution and climate change are two important threats facing in our planet and are tightly linked to carbonaceous components in the atmosphere.A better understanding of the emission sources and environmental fate/sink of carbonaceous components is critical for improving our knowledge of the global carbon cycle and mitigating the negative environmental impacts of air pollution and climate change on human ***(^(14)C),which is decayed completely in fossil fuel(*** and petroleum),is an ideal tool for quantifying the carbon flow in various carbon *** study reviews the current knowledge of 14C in organic carbon(OC),elemental carbon(EC),individual organic compounds,methane(CH_(4)),carbon dioxide(CO_(2)),annual plants,and tree *** impacts of fossil and non-fossil sources on the atmosphere can be quantified by measuring^(14)*** also report on the influence of nuclear power plants and sea-air gas exchange on the abundance of^(14)C in the *** increasing fossil fuel emissions indicated by the depletion of^(14)CO_(2)under IPCC RCP scenarios,support the urgent need to devise ambitious strategies of reducing carbonaceous components to achieve sustainable development on *** review summarizes the challenges and perspectives of 14C studies of the atmosphere.

关键词： Radiocarbon(^(14)C) AerosolsAtmospheric^(14)CO_(2) Atmospheric^(14)CH_(4) Nuclear power plants(NPPs) Plant materials Carbon reduction

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Surface Br?nsted-Lewis dual acid sites for high-efficiency dinitrogen photofixation in pure water

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Journal of Energy Chemistry 2022年第4期67卷 824-830页

作者： Cai Chen Jiewei Chen Zhiyuan Wang Fei Huang Jian Yang Yunteng Qu Kuang Liang Xiao Ge Yanggang Wang Hui zhang Yuen Wu College of Chemistry and Chemical Engineering Southwest Petroleum University Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology School of Chemistry and Materials Science iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences

As is known to all, nitrogen not only plays an important role in the industrial development of human society but also plays an important part in the proteins that constitute the essence of life[1]. In 1910, the Haber-... 详细信息

关键词： Photocatalytic nitrogen fixation Brønsted-Lewis dual acid sites Surface-modified TiO2 Surface states F and H atoms

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