Instrumentation Mesure Metrologie最新文献_第9页

Quantification of Collateral Flows in Patients with Severe Coronaropathies 严重冠状动脉疾病患者侧支循环的量化

Instrumentation Mesure Metrologie Pub Date : 2020-06-01 DOI: 10.18280/i2m.190309

A. Drochon, A. Anselmi, H. Corbineau, J. Verhoye

引用次数: 0

Noninvasive Instrumentation for Respiratory Activity Recording in Freely Moving Rats Placed a Large Experimental Space 放置在大实验空间中自由活动大鼠呼吸活动记录的无创仪器

Instrumentation Mesure Metrologie Pub Date : 2020-06-01 DOI: 10.18280/i2m.190303

D. Ligot, Christine Marguet, B. Favre, B. Messaoudi, D. Gervasoni, P. Litaudon

引用次数: 0

Small But Powerful Optically: Glass Microcapillaries for Studying Complex Fluids or Biological Systems with Submicrolitre Samples under Harsh Conditions 小而强大的光学:玻璃微血管研究复杂的流体或生物系统与亚微升样品在恶劣条件下

Instrumentation Mesure Metrologie Pub Date : 2020-06-01 DOI: 10.18280/i2m.190307

Kedi Zhou, Patrick Bouriat, Nelly Hobeika, A. Touil, Anthony Ranchou-Peyruse, D. Broseta, Ross Brown

引用次数: 1

Electrical Characterization of Calcium Oxalate Hydrate in Urine 尿中水合草酸钙的电特性

Instrumentation Mesure Metrologie Pub Date : 2020-03-20 DOI: 10.18280/i2m.190104

Nida Nasir, Shaima Raji, Mahmoud Al Ahmad

{"title":"Electrical Characterization of Calcium Oxalate Hydrate in Urine","authors":"Nida Nasir, Shaima Raji, Mahmoud Al Ahmad","doi":"10.18280/i2m.190104","DOIUrl":"https://doi.org/10.18280/i2m.190104","url":null,"abstract":"Urolithiasis is a very usual problem affecting humans and animals both globally. Calcium-oxalate is the main component of the urinary stones, largely because of the excess consumption of oxalate-rich foods. The occurrence of urinary oxalate occurs by endogenous synthesis. In a normal, healthy individual the excretion of oxalate ranges from 10mg to 45mg per day, based on the age and gender, but risk of stone formation starts at 25mg per day reliant on the individual health history. This study determines a sensitive method for sensing the existence of calcium oxalate in urine. This can be done by measuring the variant amounts of calcium oxalate hydrate (CaC 2 O 4 .H 2 O) in urine and analyzing the dielectric properties of each sample. The proposed method can distinguish dynamic changes in the samples’ electrical properties over a time interval. Even for the urine sample containing calcium oxalate hydrate as low as 10μg per ml. This makes the proposed method appropriate for identifying changes that are unrecognized by conventional methods. The potential to detect very small quantity of stone salts makes it a lucrative tool for sensing and quantifying stones in kidney.","PeriodicalId":38637,"journal":{"name":"Instrumentation Mesure Metrologie","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43968325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Eddy Current Nondestructive Method for Crack Detection in Multilayer Riveted Structures 涡流无损检测多层铆接结构裂纹的方法

Instrumentation Mesure Metrologie Pub Date : 2019-11-11 DOI: 10.18280/i2m.180508

A. Abdou, O. Safer, T. Bouchala, A. Bendaikha, B. Abdelhadi, A. Guettafi, A. Benoudjit

{"title":"An Eddy Current Nondestructive Method for Crack Detection in Multilayer Riveted Structures","authors":"A. Abdou, O. Safer, T. Bouchala, A. Bendaikha, B. Abdelhadi, A. Guettafi, A. Benoudjit","doi":"10.18280/i2m.180508","DOIUrl":"https://doi.org/10.18280/i2m.180508","url":null,"abstract":"Received: 8 June 2019 Accepted: 12 September 2019 It is a challenging task to detect the hidden cracks in multilayer riveted structures in a nondestructive manner. This paper puts forward an eddy current nondestructive method for crack detection in such structures based on the electric conductivity of the rivets. Specifically, an eddy current sensor was designed with a ferrite core coil to evaluate the surface and inner defects of different layers. The magnetic phenomena during the detection process was simulated based on the magnetic potential and the scalar electrical potential, and the magnetic potential vector was solved by finite-element method. The proposed method was compared with the eddy current detection method without considering rivet conductivity through an experiment on a three-layer riveted aluminum structure. The length and position of each defect on each layer were changed in the experiment. The results show that the proposed method achieved better accuracy than the contrastive method, and its sensitivity depends on two issues: the position of the defect relative to the separation of the layers and the length of the defect relative to the length of the rivet head. The research results are of great significance for nondestructive testing of multilayer riveted structures in many fields.","PeriodicalId":38637,"journal":{"name":"Instrumentation Mesure Metrologie","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46382620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Numerical Simulation of Reactive Flow of Two Turbulence Models Based on Probability Density Function 基于概率密度函数的两种湍流模型反流数值模拟

Instrumentation Mesure Metrologie Pub Date : 2019-11-11 DOI: 10.18280/i2m.180511

Rouan Serik Habib, Bounif Abdelhamid, B. Mohamed, A. Larbi

引用次数: 0

3D Visualization of Landslide Based on Close-Range Photogrammetry 基于近景摄影测量的滑坡三维可视化

Instrumentation Mesure Metrologie Pub Date : 2019-11-11 DOI: 10.18280/i2m.180507

Chenguang Zhang, Daohan Zha, Shaoxiong Zhou, Hongxia Zhou, Haidong Jiang

引用次数: 5

Real-Time False Data Detection in Smart Grid Based on Fuzzy Time Series 基于模糊时间序列的智能电网虚假数据实时检测

Instrumentation Mesure Metrologie Pub Date : 2019-11-11 DOI: 10.18280/i2m.180503

Abdelkarim El Khantach, Mohamed Hamlich, N. Belbounaguia

引用次数: 1

A Novel Temperature Estimation Model for Limestone Soil 一种新的石灰岩土壤温度估算模型

Instrumentation Mesure Metrologie Pub Date : 2019-11-11 DOI: 10.18280/i2m.180509

R. Mihoub, A. Amroune, S. Bekkouche, R. Djeffal, Abdelaziz Benkhelifa

引用次数: 2

An Adaptive Approach for Ultra-Wideband Positioning in Complex Environment 一种复杂环境下超宽带自适应定位方法

Instrumentation Mesure Metrologie Pub Date : 2019-11-11 DOI: 10.18280/i2m.180502

Bo Song, Sheng-lin Li, M. Tan, W. Zhong

{"title":"An Adaptive Approach for Ultra-Wideband Positioning in Complex Environment","authors":"Bo Song, Sheng-lin Li, M. Tan, W. Zhong","doi":"10.18280/i2m.180502","DOIUrl":"https://doi.org/10.18280/i2m.180502","url":null,"abstract":"Received: 28 March 2019 Accepted: 19 July 2019 The machine learning methods for ultra-wideband (UWB) positioning in non-line-of-sight (NLOS) environment either mitigates the NLOS ranging errors after identifying the NLOS signals (indirect mitigation methods) or directly mitigates the errors (direct mitigation methods). Despite their positioning accuracy, the indirect mitigation methods face two problems: the positioning system faces a high computing load, for lots of samples are needed to train the classification model and the regression model, respectively; the uneven distribution of the NLOS signal samples is often ignored, reducing the generalization ability of the regression model. To solve the two problems, this paper designs an adaptive approach to reduce the complexity and improve the positioning accuracy of UWB system in complex environment. Under this approach, the moment-based imbalanced binary classification (MIBC) is firstly adopted to identify the NLOS signal samples, and divides the samples into mild and severe obstruction propagation signals, according to the magnitude of NLOS signal ranging errors; then, the fuzzy comprehensive evaluation (FCE) and Gaussian process regression (GPR) were combined into the F-GPR to mitigate the ranging errors of the two types of the signals. The excellence of the proposed adaptive approach was fully proved through simulations, in comparison with the hybrid method and the global GPR.","PeriodicalId":38637,"journal":{"name":"Instrumentation Mesure Metrologie","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49097010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2