Results 181 to 190 of about 574,963 (244)

RNA viral loads of SARS-CoV-2 Alpha and Delta variants in nasopharyngeal specimens at diagnosis stratified by age, clinical presentation and vaccination status. [PDF]

open access: yesJ Infect, 2022
Costa R   +7 more
europepmc   +1 more source

Self‐Sterilizing Face Mask Employing Enzymatic Power Generation

open access: yesAdvanced Materials Technologies, EarlyView.
Electric face mask with flexible biofuel cell integration for on‐the‐go sterilization is developed utilizing ethanol oxidation via alcohol dehydrogenase, and oxygen reduction via bilirubin oxidase. Modified face mask exhibited bacterial death rates of 40–60% at only 20 µA of electric current, easily generated by the biofuel cell continuously over hours
Daniella Marie Gatus   +3 more
wiley   +1 more source

Single‐Virus Stochastic Biosensing: Proof of Concept for SARS‐CoV‐2 Detection in Complex Medium Using CMOS‐Based Nanocapacitor Arrays

open access: yesAdvanced Sensor Research, EarlyView.
SARS‐CoV‐2 particles in complex cell culture medium are detected using high‐frequency electrical measurements. This is made possible through the use of large arrays of independently addressable nanoelectrodes implemented using complementary metal oxide semiconductor (CMOS), semiconductor technology.
Suryasnata Tripathy   +7 more
wiley   +1 more source

Digital Bioassays on the Slipchip Microfluidic Devices

open access: yesAdvanced Sensor Research, EarlyView.
This review summarizes recent advances in SlipChip‐based digital bioassays, highlighting their simple “load and slip” operation for fluid partitioning which eliminate the need for sophisticated fluidic systems. Applications include digital nucleic acid analysis, digital protein analysis and single‐cell analysis, demonstrating the platform‘s potential ...
Qingqing Luo   +5 more
wiley   +1 more source

A SERS‐Based Antibody‐Aptamer Sandwich Assay for Extracellular Vesicle‐Associated Tau Detection Using Gold Nanoparticles

open access: yesAdvanced Sensor Research, EarlyView.
Tau protein plays a critical role in the pathology of Alzheimer's disease, utilizing extracellular vesicles (EVs) as a mechanism for intercellular transmission. This study develops a highly sensitive sandwich assay biosensor for detecting and quantifying tau‐associated EVs using surface‐enhanced Raman spectroscopy (SERS).
Saqer Al Abdullah   +6 more
wiley   +1 more source

Label‐Free, Sensitive, and Direct Detection of Cardiac Troponin Biomarkers Using Frequency‐Locked Microring Resonators

open access: yesAdvanced Sensor Research, EarlyView.
A deployable, chip‐integrated approach to the detection of heart attack biomarkers is demonstrated using silicon photonic microring resonators combined with microfluidics. By applying the Pound–Drever–Hall frequency locking technique, sensor signals are measured with improved signal‐to‐noise ratio, applying this to real‐time, selective readouts.
Evan Diamandikos   +9 more
wiley   +1 more source

Microphysiological Systems in Cancer Research: Advancing Immunotherapy through Tumor Microenvironment‐Integrated Organ‐On‐Chip Models

open access: yesAdvanced Therapeutics, EarlyView.
Emerging microphysiological systems reproduce the spatial, biochemical, and cellular complexity of the tumor microenvironment, surpassing 2D cultures and murine models. By integrating patient‐derived tumors, perfusable vasculature, and immune trafficking, these organ‐on‐chip platforms reveal mechanisms of immune evasion, predict therapeutic responses ...
Fabiana Moresi   +5 more
wiley   +1 more source

Home - About - Disclaimer - Privacy