Sensor system for non-invasive optical carboxy-and methemoglobin determination

2017 ◽  
Author(s):  
Ulrich Timm ◽  
Helge Gewiss ◽  
Jens Kraitl ◽  
Beate Brock ◽  
Hartmut Ewald
Keyword(s):  
Sensor System ◽  
Non Invasive

scholarly journals Flexible Potentiometric Sensor System for Non-Invasive Determination of Antioxidant Activity of Human Skin: Application for Evaluating the Effectiveness of Phytocosmetic Products

Chemosensors ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 76
Author(s):  
Aleksey V. Tarasov ◽  
Ekaterina I. Khamzina ◽  
Maria A. Bukharinova ◽  
Natalia Yu. Stozhko
Keyword(s):  
Antioxidant Activity ◽  
Human Skin ◽  
Skin Diseases ◽  
Silver Chloride ◽  
Potentiometric Sensor ◽  
Sensor System ◽  
Non Invasive ◽  
Pet Film ◽  
The Impact

In contemporary bioanalysis, monitoring the antioxidant activity (AOA) of the human skin is used to assess stresses, nutrition, cosmetics, and certain skin diseases. Non-invasive methods for skin AOA monitoring have certain advantages over invasive methods, namely cost-effectiveness, lower labor intensity, reduced risk of infection, and obtaining results in the real-time mode. This study presents a new flexible potentiometric sensor system (FPSS) for non-invasive determination of the human skin AOA, which is based on flexible film electrodes (FFEs) and membrane containing a mediator ([Fe(CN)6]3–/4–). Low-cost available materials and scalable technologies were used for FFEs manufacturing. The indicator FFE was fabricated based on polyethylene terephthalate (PET) film and carbon veil (CV) by single-sided hot lamination. The reference FFE was fabricated based on PET film and silver paint by using screen printing, which was followed by the electrodeposition of precipitate containing a mixture of silver chloride and silver ferricyanide (SCSF). The three-electrode configuration of the FPSS, including two indicator FFEs (CV/PET) and one reference FFE (SCSF/Ag/PET), has been successfully used for measuring the skin AOA and evaluating the impact of phytocosmetic products. FPSS provides reproducible (RSD ≤ 7%) and accurate (recovery of antioxidants is almost 100%) results, which allows forecasting its broad applicability in human skin AOA monitoring as well as for evaluating the effectiveness of topically and orally applied antioxidants.

scholarly journals Sensor System Concept for Non-Invasive Blood Diagnosis

2009 ◽  
Vol 1 (1) ◽  
pp. 493-496 ◽  
Author(s):  
U. Timm ◽  
E. Lewis ◽  
D. McGrath ◽  
J. Kraitl ◽  
H. Ewald
Keyword(s):  
Sensor System ◽  
Non Invasive ◽  
System Concept

Winging of the Scapula: The Underlying Biomechanics and an Orthotic Solution

1995 ◽  
Vol 209 (4) ◽  
pp. 215-223 ◽  
Author(s):  
N D Barnett ◽  
M Mander ◽  
J C Peacock ◽  
K Bushby ◽  
D Gardner-Medwin ◽  
...  
Keyword(s):  
Muscular Dystrophy ◽  
Surgical Technique ◽  
Spinal Muscular Atrophy ◽  
Nerve Injury ◽  
Muscular Atrophy ◽  
Sensor System ◽  
Functional Improvement ◽  
Medial Border ◽  
Non Invasive ◽  
Muscular Disorders

Winging of the scapula occurring in muscular disorders (muscular dystrophy and spinal muscular atrophy) or nerve injury has been investigated, resulting in a thorough understanding and presentation of the underlying biomechanics causing this occurrence. This includes a biomechanical explanation of the characteristic prominence of the medial border of the scapula upon attempted elevation, together with the biomechanical reasons for the rotation of the scapula in a direction contrary to the normal scapulohumeral rhythm. Based on these findings, a non-invasive alternative to the surgical technique for scapular stabilization has been devised, using an inflatable orthosis, placed between the scapula and an external restraint (such as a spinal jacket). The device has been tested on one subject using a 3SPACE™ Isotrak™ electromagnetic source and sensor system, and gave encouraging results. Elevation increased by up to 35° (37 per cent), and functional improvement in the use of the hand around the head and face has been achieved. The technique needs no aftercare or physiotherapy and is therefore both economical and functionally effective.

A multi-sensor system for the non-invasive measurement of the activity of the autonomic nervous system

1995 ◽  
Vol 27 (1-3) ◽  
pp. 461-464 ◽  
Author(s):  
A. Dittmar ◽  
H. Rada ◽  
G. Delhomme ◽  
E. Vernet-Maury ◽  
C. Collet ◽  
...  
Keyword(s):  
Nervous System ◽  
Autonomic Nervous System ◽  
Sensor System ◽  
Autonomic Nervous ◽  
Non Invasive ◽  
Invasive Measurement
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