scholarly journals A comparative analysis of printing techniques by using an active concentric ring electrode for bioelectrical recording

2015 ◽  
Vol 32 (2) ◽  
pp. 103-107 ◽  
Author(s):  
Eduardo Garcia-Breijo ◽  
Gema Prats-Boluda ◽  
Jose Vicente Lidon-Roger ◽  
Yiyao Ye-Lin ◽  
Javier Garcia-Casado
Keyword(s):  
Ring Electrode ◽  
The Body ◽  
Signal Acquisition ◽  
Concentric Ring ◽  
Contact Impedance ◽  
Content Type ◽  
Non Invasive ◽  
Electrode Resistance ◽  
Lower Baseline ◽  
Manufacturing Techniques

Purpose – This paper aims to present a comparison between three types of manufacturing techniques, namely, screen-printed, inkjet and gravure, using different types of inks, for the implementation of concentric ring electrodes which permit estimation of Laplacian potential on the body surface. Design/methodology/approach – Flexible concentric ring electrodes not only present lower skin–electrode contact impedance and lower baseline wander than rigid electrodes but are also less sensitive to interference and motion artefacts. The above three techniques allow printing of conductive inks on flexible substrates, and with this work, the authors aim to study which is the best technique and ink to obtain the best electrode response. Findings – From the results obtained regarding ink thickness, resistivity, electrode resistance and other performance parameters derived from electrocardiographic signal recording tests, it can be said that concentric electrodes using the screen-printing and inkjet techniques are suitable for non-invasive bioelectric signal acquisition. Originality/value – The development of new types of inks and substrates for the electronics industry and the adaptation of new manufacturing techniques allow for an improvement in the development of electrodes and sensors.

Non-invasive electrohysterogram recording using flexible concentric ring electrode

2014 ◽  
Author(s):  
Y. Ye-Lin ◽  
J. Alberola-Rubio ◽  
G. Prats-Boluda ◽  
J. M. Bueno Barrachina ◽  
A. Perales ◽  
...  
Keyword(s):  
Ring Electrode ◽  
Concentric Ring ◽  
Non Invasive

scholarly journals Flexible Concentric Ring Electrode for Non Invasive Bioelectrical Surface Recordings

2012 ◽  
Vol 47 ◽  
pp. 1223-1226 ◽  
Author(s):  
Gema Prats-Boluda ◽  
Luis Gil-Sánchez ◽  
Yiyao Ye-Lin ◽  
Javier Ibañez ◽  
Javier Garcia-Casado ◽  
...  
Keyword(s):  
Ring Electrode ◽  
Concentric Ring ◽  
Non Invasive

scholarly journals Active concentric ring electrode for non-invasive detection of intestinal myoelectric signals

2011 ◽  
Vol 33 (4) ◽  
pp. 446-455 ◽  
Author(s):  
Gema Prats-Boluda ◽  
Javier Garcia-Casado ◽  
Jose L. Martinez-de-Juan ◽  
Yiyao Ye-Lin
Keyword(s):  
Ring Electrode ◽  
Concentric Ring ◽  
Myoelectric Signals ◽  
Non Invasive

scholarly journals Wireless sensor node for non-invasive high precision electrocardiographic signal acquisition based on a multi-ring electrode

Measurement ◽  
2017 ◽  
Vol 97 ◽  
pp. 195-202 ◽  
Author(s):  
Y. Ye-Lin ◽  
J.M. Bueno-Barrachina ◽  
G. Prats-boluda ◽  
R. Rodriguez de Sanabria ◽  
J. Garcia-Casado
Keyword(s):  
High Precision ◽  
Sensor Node ◽  
Ring Electrode ◽  
Wireless Sensor ◽  
Signal Acquisition ◽  
Wireless Sensor Node ◽  
Non Invasive ◽  
Electrocardiographic Signal

scholarly journals Active flexible concentric ring electrode for non-invasive surface bioelectrical recordings

2012 ◽  
Vol 23 (12) ◽  
pp. 125703 ◽  
Author(s):  
G Prats-Boluda ◽  
Y Ye-Lin ◽  
E Garcia-Breijo ◽  
J Ibañez ◽  
J Garcia-Casado
Keyword(s):  
Ring Electrode ◽  
Concentric Ring ◽  
Non Invasive

Glucose Calibration Modeling in Blood with Spline Regression Approaching to Non-Invasive Tools

2018 ◽  
pp. 144-149
Author(s):  
Ria Hayatun Nur ◽  
Indahwati A ◽  
Erfiani A
Keyword(s):  
Diabetes Mellitus ◽  
Linear Regression ◽  
Good Health ◽  
Cubic Spline ◽  
The Body ◽  
Spline Regression ◽  
Linear Quadratic ◽  
Important Thing ◽  
Non Invasive

In this globalization era, health is the most important thing to be able to run various activities. Without good health, this will hinder many activities. Diabetes mellitus is one of the diseases caused by unhealty lifestyle.There are many treatments that can be done to prevent the occurrence of diabetes. The treatments are giving the insulin and also checking the glucose rate to the patients.Checking the glucose rate needs the tools which is safety to the body. This research want to develop non invasive tool which is safety and do not injure the patient. The purpose of this research is also finding the best model which derived from Linear, Quadratic, and Cubic Spline Regression. Some respondents were taking to get the glucose measuring by invasive and non invasive tools. It could be seen clearly that Spline Linear Regression was the best model than Quadratic and Cubic Spline Regression. It had 70% and 33.939 for R2 and RMSEP respectively.

scholarly journals User-driven efforts in creating knowledge graph information system

2020 ◽  
Vol 36 (2) ◽  
pp. 97-111
Author(s):  
Stanislava Gardasevic
Keyword(s):  
Information System ◽  
Information Seeking ◽  
Information Needs ◽  
Resource Discovery ◽  
The Body ◽  
Knowledge Graph ◽  
Structured Interviews ◽  
Community Members ◽  
Study Objective ◽  
Content Type

Purpose This paper presents the results of a qualitative study that involved students of an interdisciplinary PhD program. The study objective was to gather requirements to create a knowledge graph information system. The purpose of this study was to determine information-seeking practices and information needs of this community, to inform the functionalities of a proposed system, intended to help students with relevant resource discovery and decision-making. Design/methodology/approach The study design included semi-structured interviews with eight members of the community, followed by a website usability study with the same student participants. Findings Two main information-seeking styles are recognized and reported through user personas of international and domestic (USA) students. The findings show that the useful information resides within the community and not so much on the program website. Students rely on peer communication, although they report lack of opportunities to connect. Students’ information needs and information seeking are dependent on their progress through the program, as well as their motivation and the projected timeline. Practical implications Considering the current information needs and practices, a knowledge graph hosting both information on social networks and the knowledge produced by the activities of the community members would be useful. By recording data on their activities (for example, collaboration with professors and coursework), students would reveal further useful system functionalities and facilitate transfer of tacit knowledge. Originality/value Aside from the practical value of this research that is directly influencing the design of a system, it contributes to the body of knowledge on interdisciplinary PhD programs.

scholarly journals Non-invasive vagus nerve stimulation boosts mood recovery after effort exertion

2021 ◽  
pp. 1-11
Author(s):  
Magdalena Ferstl ◽  
Vanessa Teckentrup ◽  
Wy Ming Lin ◽  
Franziska Kräutlein ◽  
Anne Kühnel ◽  
...  
Keyword(s):  
Vagus Nerve ◽  
Nerve Stimulation ◽  
Vagus Nerve Stimulation ◽  
Positive Mood ◽  
Credible Interval ◽  
Cognitive Effort ◽  
Mood States ◽  
Non Invasive ◽  
Lower Baseline ◽  
Open Question

Abstract Background Mood plays an important role in our life which is illustrated by the disruptive impact of aberrant mood states in depression. Although vagus nerve stimulation (VNS) has been shown to improve symptoms of depression, the exact mechanism is still elusive, and it is an open question whether non-invasive VNS could be used to swiftly and robustly improve mood. Methods Here, we investigated the effect of left- and right-sided transcutaneous auricular VNS (taVNS) v. a sham control condition on mood after the exertion of physical and cognitive effort in 82 healthy participants (randomized cross-over design) using linear mixed-effects and hierarchical Bayesian analyses of mood ratings. Results We found that 90 min of either left-sided or right-sided taVNS improved positive mood [b = 5.11, 95% credible interval, CI (1.39–9.01), 9.6% improvement relative to the mood intercept, BF10 = 7.69, pLME = 0.017], yet only during the post-stimulation phase. Moreover, lower baseline scores of positive mood were associated with greater taVNS-induced improvements in motivation [r = −0.42, 95% CI (−0.58 to −0.21), BF10 = 249]. Conclusions We conclude that taVNS boosts mood after a prolonged period of effort exertion with concurrent stimulation and that acute motivational effects of taVNS are partly dependent on initial mood states. Collectively, our results show that taVNS may help quickly improve affect after a mood challenge, potentially by modulating interoceptive signals contributing to the reappraisal of effortful behavior. This suggests that taVNS could be a useful add-on to current behavioral therapies.

scholarly journals Analytical Approach for the Study of Teotihuacan Mural Paintings from the Techinantitla Complex

Minerals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 508
Author(s):  
José Luis Ruvalcaba-Sil ◽  
Luis Barba ◽  
Edgar Casanova-González ◽  
Alejandro Mitrani ◽  
Margarita Muñoz ◽  
...  
Keyword(s):  
Fiber Optics ◽  
Infrared Imaging ◽  
Blue Pigment ◽  
Large Set ◽  
Non Invasive ◽  
Mural Paintings ◽  
Interdisciplinary Research Project ◽  
Manufacturing Techniques ◽  
Materials Used ◽  
The 1960S

Techinantitla building complex, in the Amanalco neighborhood of the ancient city of Teotihuacan, is famous for the iconography and quality of the mural paintings found in this site. A significant part of this heritage has been lost due to looting. In recent years, an interdisciplinary research project was developed to study the limited patrimony that was left. As part of this study, we first employed geophysical techniques to reconstruct the architectural pattern of the compound’s remaining walls, where other paintings may still be found. Then, we applied a non-invasive methodology to characterize a large set of fragments recovered in the 1980s and to gain information on their pigments and manufacturing techniques. This methodology included False Color Infrared Imaging, X-ray Fluorescence and Fiber-Optics Reflectance Spectroscopy, and led to the identification of hematite, calcite, malachite, azurite and an unidentified blue pigment. The results were compared with a previous study performed on a set of Techinantitla mural paintings looted in the 1960s. A broader comparison with contemporary mural paintings from other Teotihuacan complexes shows good agreement in the materials used. These results may suggest a standardization in the making of Teotihuacan mural painting during the Xolapan period (350 to 550 AD).

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