scholarly journals A printed and self-powered test strip for digital conductivity measurement of low volume liquid samples

2021 ◽  
Author(s):  
Laura Ortega ◽  
Anna Llorella ◽  
Juan Pablo Esquivel ◽  
Josep Mas-Pla ◽  
Neus Sabate
Keyword(s):  
Conductivity Measurement ◽  
Test Strip ◽  
Liquid Samples ◽  
Low Volume ◽  
Self Powered

scholarly journals A high-throughput microfluidic nano-immunoassay for detecting anti-SARS-CoV-2 antibodies in serum or ultra-low volume dried blood samples

2020 ◽  
Author(s):  
Zoe Swank ◽  
Grégoire Michielin ◽  
Hon Ming Yip ◽  
Patrick Cohen ◽  
Diego O. Andrey ◽  
...  
Keyword(s):  
High Throughput ◽  
Whole Blood ◽  
Large Scale ◽  
Test Strip ◽  
Sample Collection ◽  
Serum Samples ◽  
Blood Samples ◽  
Novel Technologies ◽  
Glucose Test ◽  
Low Volume

AbstractNovel technologies are needed to facilitate large-scale detection and quantification of SARS-CoV-2 specific antibodies in human blood samples. Such technologies are essential to support seroprevalence studies, vaccine clinical trials, and to monitor quality and duration of immunity. We developed a microfluidic nano-immunnoassay for the detection of anti-SARS-CoV-2 IgG antibodies in 1024 samples per device. The method achieved a specificity of 100% and a sensitivity of 98% based on the analysis of 289 human serum samples. To eliminate the need for venipuncture, we developed low-cost, ultra-low volume whole blood sampling methods based on two commercial devices and repurposed a blood glucose test strip. The glucose test strip permits the collection, shipment, and analysis of 0.6 µL whole blood easily obtainable from a simple fingerprick. The nano-immunoassay platform achieves high-throughput, high sensitivity and specificity, negligible reagent consumption, and a decentralized and simple approach to blood sample collection. We expect this technology to be immediately applicable to current and future SARS-CoV-2 related serological studies and to protein biomarker diagnostics in general.

475: Clinically Insignificant Prostate Cancer - Can we Reliable Predict Low Volume and Low Grade Prostate Cancer Preoperatively?

2006 ◽  
Vol 175 (4S) ◽  
pp. 154-154
Author(s):  
Michael Alschibaja ◽  
Joerg Massmann ◽  
Armin Funk ◽  
Heiner Van Randenborgh ◽  
Rudolf Hartung ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Low Grade ◽  
Low Volume ◽  
Insignificant Prostate Cancer

INFRARED PHOTOACOUSTIC SPECTROMETER AND DATA ANALYSIS FOR HETEROGENEOUS OR LIQUID SAMPLES

1983 ◽  
Vol 44 (C6) ◽  
pp. C6-165-C6-170
Author(s):  
G. Rousset ◽  
J. P. Monchalin ◽  
L. Bertrand
Keyword(s):  
Data Analysis ◽  
Liquid Samples ◽  
Photoacoustic Spectrometer

EFFECTIVENESS AND TOLERABILITY OF VERY LOW VOLUME PREPARATION FOR COLONOSCOPY: A PROSPECTIVE, MULTICENTER STUDY

2019 ◽  
Author(s):  
M Maida ◽  
G Morreale ◽  
E Sinagra ◽  
M Manganaro ◽  
D Schillaci ◽  
...  
Keyword(s):  
Multicenter Study ◽  
Prospective Multicenter Study ◽  
Low Volume

Analysis of significant measures for thermal conductivity

2020 ◽  
pp. 35-42
Author(s):  
Yuri P. Zarichnyak ◽  
Vyacheslav P. Khodunkov
Keyword(s):  
Thermal Conductivity ◽  
Heat Flux ◽  
Surface Heat Flux ◽  
Heat Flux Density ◽  
Measurement Method ◽  
Conductivity Measurement ◽  
Surface Heat ◽  
Measuring Instrument ◽  
New Class ◽  
Achievable Accuracy

The analysis of a new class of measuring instrument for heat quantities based on the use of multi-valued measures of heat conductivity of solids. For example, measuring thermal conductivity of solids shown the fallacy of the proposed approach and the illegality of the use of the principle of ambiguity to intensive thermal quantities. As a proof of the error of the approach, the relations for the thermal conductivities of the component elements of a heat pump that implements a multi-valued measure of thermal conductivity are given, and the limiting cases are considered. In two ways, it is established that the thermal conductivity of the specified measure does not depend on the value of the supplied heat flow. It is shown that the declared accuracy of the thermal conductivity measurement method does not correspond to the actual achievable accuracy values and the standard for the unit of surface heat flux density GET 172-2016. The estimation of the currently achievable accuracy of measuring the thermal conductivity of solids is given. The directions of further research and possible solutions to the problem are given.

Identification and Management of Clustered Pellitory (Parietaria praetermissa) in Citrus Groves

EDIS ◽  
2019 ◽  
Vol 2019 (5) ◽  
pp. 3
Author(s):  
Ramdas Kanissery ◽  
Biwek Gairhe ◽  
Brent Sellers ◽  
Steve Futch
Keyword(s):  
Drip Irrigation ◽  
Early Summer ◽  
Irrigation Systems ◽  
Spray Pattern ◽  
Citrus Groves ◽  
Low Volume ◽  
Florida Citrus ◽  
Heavy Infestation

In Florida, clustered pellitory is becoming a troublesome weed for citrus, especially from the winter through early summer. Inadequate management of this weed can result in its heavy infestation in tree rows and can interrupt the spray pattern of low-volume drip irrigation systems. This new 3-page publication of the UF/IFAS Horticultural Sciences Department will assist Florida citrus growers with proper identification of clustered pellitory and with adoption of adequate and timely strategies to manage this weed in their groves. Written by Ramdas Kanissery, Biwek Gairhe, Brent Sellers, and Steve Futch. https://edis.ifas.ufl.edu/hs1341

Transport Path in Hydrogenated Microcrystalline Silicon

2002 ◽  
Vol 715 ◽  
Author(s):  
N. Wyrsch ◽  
C. Droz ◽  
L. Feitknecht ◽  
J. Spitznagel ◽  
A. Shah
Keyword(s):  
Raman Spectroscopy ◽  
Volume Fraction ◽  
Conductivity Measurement ◽  
Dark Conductivity ◽  
Transition Regime ◽  
Conductivity Data ◽  
Crystalline Volume Fraction ◽  
Microcrystalline Silicon ◽  
Crystalline Fraction ◽  
Transport Path

AbstractUndoped microcrystalline silicon samples deposited in the transition regime between amorphous and microcrystalline growth have been investigated by dark conductivity measurement and Raman spectroscopy. From the latter, a semi-quantitative crystalline volume fraction Xc of the sample was deduced and correlated with dark conductivity data in order to reveal possible percolation controlled transport. No threshold was observed around the critical crystalline fraction value Xc of 33%, as reported previously, but a threshold in conductivity data was found at Xc≈50%. This threshold is interpreted here speculatively as being the result of postoxidation, and not constituting an actual percolation threshold.

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