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基于智能手机的可视化生物传感器在即时检测中的研究进展

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分析化学 2024年第2期52卷 145-156页

作者：向宪昕孙华悦柴会宁喻琨曲丽君张光耀张学记青岛大学纺织服装学院智能可穿戴技术研究中心省部共建生物多糖纤维成形与生态纺织国家重点实验室青岛理工大学环境与市政工程学院深圳大学生物医学工程学院

人体生理指标是衡量健康与否的重要标准。传统的检测方法通常要求单独的实验室、复杂的操作流程且耗费较长的检测时间，难以满足快速诊断和居家健康监测的需求，因此亟需开发便携、快速和精准的现场检测技术。即时检测（Point-of-care t... 详细信息

人体生理指标是衡量健康与否的重要标准。传统的检测方法通常要求单独的实验室、复杂的操作流程且耗费较长的检测时间，难以满足快速诊断和居家健康监测的需求，因此亟需开发便携、快速和精准的现场检测技术。即时检测（Point-of-care testing, POCT）区别于传统实验室检测的主要特征是不需要实验室繁杂的分析过程即可实现生物分子的快速原位检测。智能手机作为日常生活广泛使用的通讯工具，具有独立的操作系统，内置存储功能，还配备高清摄像头，在POCT可视化检测方面有巨大的应用潜力。将各种生物传感技术与智能手机相结合已经发展成为POCT领域的一个新方向。本文对近年来基于智能手机的可视化生物传感器在POCT中的研究进展进行了评述，包括比色传感器、荧光传感器、化学发光传感器和电化学发光传感器等，总结了目前基于智能手机可视化生物传感器在POCT应用中面临的问题，并对其未来发展前景进行了展望。

关键词：智能手机可视化生物传感器即时检测评述

Lax Pairs for Discrete Integrable Equations via Darboux Transformations

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Chinese Physics Letters 2012年第5期29卷 5-6页

作者： CAO Ce-Wen zhang guang-yao Department of Mathematics Zhengzhou UniversityZhengzhou 450001

A method is developed to construct discrete Lax pairs using Darboux *** kinds of Lax pairs are found for some newly appeared discrete integrable equations,including the H1,the special H3 and the Q1 models in the Adler... 详细信息

关键词： equations. Transformation Darboux

A PRELIMINARY APPROACH TO THE REGIONALIZATION OF THE MARINE COMPREHENSIVE ECONOMIC REGION IN LIAONING PROVINCE

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Chinese Geographical Science 2000年第4期10卷 69-78页

作者： zhang yao-guang Institute of Marine Resources Liaoning Normal UniversityDalian 116029P.R.China

China is a country with a vast marine territory whose area covers one third of the total land territory area. With the exploitation of marine resources and the development of marine economy, marine economic regions have been formed gradually. We shouldn’t ignore them when we divide economic regions throughout the whole nation,especially in our country. In this paper, we’ll expand division principles, practice and methods of .marine comprehensive economic region. Liaoning Province,facing the Yellow Sea and the Bohai sea, is not only a part of Round-the-Bohai Sea Economic Region, but a part of national marine econemic region. Through evaluating marine resources of Liaoning, and analyzing development of marine economy, composition of marine industries and distributional characteristic of marine economy, Liaoning marine region is divided into Bohai Sea marine economic region and Yellow Sea marine economic region based on differences of marine economy. Thereby we go further into the formation of regional marine economic region and distributional mechanism of regional marine economy.

关键词： marine comprehensive economic region marine economy marine territory marine industry

Bioinspired Scraper-File Type Frequency-Doubling Ultrasonic Exciter

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Journal of Bionic Engineering 2024年第4期21卷 1801-1816页

作者： Wenshuai Wu Mingshuo zhang Zeming Li guang yao Xinggang Jiang Deyuan zhang School of Mechanical Engineering and Automation Beihang UniversityBeijing100191China Institute of Bionic and Micro-Nano Systems Beihang UniversityBeijing100191China guangdong Provincial Key Laboratory of Minimally Invasive Surgical Instruments and Manufacturing Technology Guangdong University of TechnologyGuangzhou510006China

In the natural world,leaf-cutting ants cause vibrations through their mutual scraping of file-scraper *** this study,we designed a Biomimetic Ultrasonic Exciter(BUE)that imitates leaf-cutting *** operating characteristics of the BUE were studied through experimental testing and finite element *** results showed that the BUE could generate stable ultrasonic vibrations,and that the excitation frequency only needed to be half the Output Frequency(OF).This frequency-doubling phenomenon was conducive to achieving BUE *** further explore the phenomenon of frequency-doubling vibration output,this study designed scrapers of five different sizes,conducted excitation and first-order natural frequency measurement tests,and the corresponding finite element *** was found that each scraper could operate in frequency-doubling mode,but the operating frequency and natural mode frequencies did not correspond with one *** further explicate experimental and simulation results,a two-degrees-of-freedom vibration model was *** was evident that the contact relationship between the dentate disc and scraper introduced strong nonlinear factors into the system,accounting for the frequency-doubling phenomenon and the difference between the BUE’s operating and mode *** BUE could be expected to facilitate the production of high-power micro-ultrasonic generators and has potential application value in the fields of mechanical processing,industrial production,and medical health.

关键词： Leaf-cutting ants Power ultrasound Nonlinear vibration Ultrasonic scalpel Micro vibrator

Research on sustainable development of small islands in China─taking 12 island counties for examples

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Journal of Geographical Sciences 1999年第1期9卷 51-58页

作者： zhang yao-guang(Liaoning Normal University, Dalian 116029, China)

Islands serve as the basis for marine exploitation,and the sustainable development of islands and that of marine exploitation are closely inter-connected. This article inquires into problems on the sustainable develop... 详细信息

关键词： small coastal islands marine exploitation sustainable development

Exploring the Cation Regulation Mechanism for Interfacial Water Involved in the Hydrogen Evolution Reaction by In Situ Raman Spectroscopy

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Nano-Micro Letters 2024年第3期16卷 303-312页

作者： Xueqiu You Dongao zhang Xia‑guang zhang Xiangyu Li Jing‑Hua Tian yao‑Hui Wang Jian‑Feng Li School of Ocean Information Engineering Fujian Provincial Key Laboratory of Oceanic Information Perception and Intelligent ProcessingJimei UniversityXiamen 361021People’s Republic of China State Key Laboratory of Physical Chemistry of Solid Surfaces MOE Key Laboratory of Spectrochemical Analysis and InstrumentationiChEMCollege of Chemistry and Chemical EngineeringCollege of MaterialsCollege of EnergyXiamen UniversityXiamen 361005People’s Republic of China Key Laboratory of Green Chemical Media and Reactions Ministry of EducationCollaborative Innovation Center of Henan Province for Green Manufacturing of Fine ChemicalsCollege of Chemistry and Chemical EngineeringHenan Normal UniversityXinxiang 453007People’s Republic of China Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM) Xiamen 361005People’s Republic of China

Interfacial water molecules are the most important participants in the hydrogen evolution reaction(HER).Hence,understanding the behavior and role that interfacial water plays will ultimately reveal the HER ***,investigating interfacial water is extremely challenging owing to the interference caused by bulk water molecules and complexity of the interfacial ***,the behaviors of interfacial water in different cationic electrolytes on Pd surfaces were investigated by the electrochemistry,in situ core-shell nanostructure enhanced Raman spectroscopy and theoretical simulation *** spectral evidence reveals a red shift in the frequency and a decrease in the intensity of interfacial water as the potential is shifted in the positively *** comparing the different cation electrolyte systems at a given potential,the frequency of the interfacial water peak increases in the specified order:Li+

关键词： In situ Raman Interfacial water Hydrogen evolution reaction Cations

APPROACH TO THE REGIONALIZATION OF A GRICULTURAL-PASTURALIZATION AROUND CHANGSHAN ISLANDS IN NORTHERN YELLOW SEA

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Chinese Geographical Science 2002年第3期12卷 218-225页

作者： zhang yao-guang,DONG Li-jing,LI Chun-ping(Institute of Marine Resource,Liaon ing Normal University,Dalian 116029,P.R.China) Institute of Marine Resource Liaoning Normal University Dalian P. R. China

Based on the data of resources,environment and foundation of productio n,applying principal compo-nents-clustering quantitative analysis,this article divides the maritime space of Changshan Islands into three regions of agricultural-pasturalization,pr oviding a scientific basis for the ra tional distribution of marine culti *** three re-gions are as follows:1)The region of an agricultural-pastu ralization in the northern part of ma ritime *** includes Da Wangjia and Shicheng *** ma in production is cultivation of praw n and molluscs in sea beach,float raft culture of mussel in shallow sea and scallop,and breeding of sea cucumber in subma rine.2)The region of agricultur-al-pasturalization in the middle we stern part of maritime *** includes Da Changshan and guanglu island s,and west-ern part of Xiao Chengshan *** main production is float raft cultu re of mussel and scallop in shallow se a,and breed-ing of sea cucumber in submarine.3)The region of agricultural-pastura lization of the southeastern part of maritime *** includes the eastern part of Xiao ChangShan Island,Haiyang and zhangzi *** main production is bre eding of abalone,sea cucumber,algaes and fish.

关键词： Changshan Islands agricultural-pasturalization of seash ore principal compo-nents-clustering analysis region alization

Narrative review of latest research progress about robotic percutaneous coronary intervention

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Journal of Geriatric Cardiology 2024年第8期21卷 816-825页

作者： Zhen-Yu LIU guang-yao ZHAI Department of Clinical Medicine Beijing Luhe HospitalCapital Medical UniversityBeijingChina Department of Cardiology Beijing Luhe HospitalCapital Medical UniversityBeijingChina

Robotic percutaneous coronary intervention(R-PCI)is a novel technology in which operators can manipulate guidewires and catheter devices in interventional *** approach provides great benefits to interventional cardiologists in terms of reducing both radiation exposure and orthopedic *** large,high-quality cohort studies have confirmed the short-term safety and high technical success rate of ***,randomized long-term data are still needed before adopting them as part of standard coronary ***,tele-stenting for complex coronary lesions has significant potential for *** need to overcome the present relevant challenges for its application such as inherent delays,bedside care for unstable patients from R-PCIs to manual PCIs(M-PCIs),incompatibility for a thrombus aspiration catheter and heavily calcified *** is a great future in laboratory workflow teams,3D-printed anatomical models and multiple joint collaborative control *** narrative review summarizes the latest developments in R-PCI,with a focus on developments in robotic technology,and discusses the current and future potential use of R-PCI in clinical practice globally.

关键词： coronary injuries unstable

Evaluation of the injection and plugging ability of a novel epoxy resin in cement cracks

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Petroleum Science 2024年第2期21卷 1211-1220页

作者： guang-yao Leng Wei Yan Hai-Mu Ye Er-Dong yao Ji-Bin Duan Zheng-Xian Xu Ke-Pei Li Jing-Ru zhang Zhong Li State Key Laboratory of Petroleum Resource&Prospecting China University of Petroleum(Beijing)Beijing102249China CNPC Liaohe Oilfield Gas Storage Co.LTD Panjin124000LiaoningChina CNOOC Research Institute Co. Ltd.Beijing100028China

Sustained casing pressure(SCP)is a crucial issue in the oil and gas production *** resins,exhibiting exceptional compressive strength,ductility,and shear bonding strength,have the potential to form reliable *** injectivity and sealing capacity of the epoxy resin is crucial parameters for the success of shallow remediation *** study aimed to develop and assess a novel solid-free resin sealant as an alternative to Portland cement for mitigating fluid *** investigation evaluated the viscosity,compressive strength,and brittleness index of the epoxy resin sealant,as well as its tangential and normal shear strengths in conjunction with casing *** flow characteristics and sealing abilities of conventional cement and epoxy resin were comparatively analyzed in *** results showed that the application of a viscosity reducer facilitated control over the curing time of the epoxy resin,ranging from 1.5 to 6 h,and reduced the initial viscosity from 865.53 to 118.71 m Pa,*** mechanical properties of the epoxy resin initially increased with a rise in curing agent content before experiencing a minor *** epoxy resin containing 30%curing agent exhibited optimal mechanical *** a 14-day curing period,the epoxy resin's compressive strength reached81.37 MPa,2.12 times higher than that of cement,whereas the elastic modulus of cement was 2.99 times greater than that of the epoxy *** brittleness index of epoxy resin is only 3.42,demonstrating high flexibility and *** tangential and normal shear strengths of the epoxy resin exceeded those of cement by 3.17 and 2.82 times,*** a 0.5 mm-wide crack,the injection pressure of the epoxy resin remained below 0.075 MPa,indicating superior injection and flow ***,the injection pressure of cement surged dramatically to 2.61 MPa within 5 *** breakthrough pressure of0.5 PV epoxy resin reached 7.53 MPa,decreasing the crack's perme

关键词： Sustained casing pressure Epoxy resin sealant Curing agent Viscosity reducer Mechanical properties Crack sealing