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Airborne spread of coronavirus disease 2019 (COVID‐19) by infectious aerosol is all but certain. However, easily implemented approaches to assess the actual environmental threat are currently unavailable. We present a simple approach with the potential to rapidly provide information about the prevalence of severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) in the atmosphere at any location...
Cortisol, a hormone commonly released upon increased stress level, is a biomarker for numerous diseases and plays an important role in the regulation of various physiological processes. Normally a cortisol level is elevated in oral saliva during the time of anxiety and depression. A portable biosensor device could provide an interesting digital instrument to the patients and people who desire precautionary...
In this paper, we present a biosensor chip to study two important biomarkers, lactoferrin (LCF) and beta-2-microglubin (B2M) present in our tear fluid. LCF and B2M have direct relevance with dry eye syndrome and diabetic retinopathy in patients respectively. We have developed a multi-layer paper-based biosensor chip connected with handheld printed circuit board (PCB) to monitor the effectiveness of...
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