Results 41 to 50 of about 21,097 (273)

Recent Advances in Nanoparticles-based Lateral Flow Biosensors

open access: yesAmerican Journal of Biomedical Sciences, 2014
Lateral flow biosensors (LFBs) provide advantages in low cost, simplicity, rapidity, stability and portability, thus making LFBs popular in biomedical, agriculture, food and environmental sciences. This article reviews recent advances of LFBs for bioassays, including the investigation of the improvements achieved by signal-amplification strategies, the
Xuefei Gao   +4 more
openaire   +1 more source

Immunosensors for Assay of Toxic Biological Warfare Agents

open access: yesBiosensors, 2023
An immunosensor for the assay of toxic biological warfare agents is a biosensor suitable for detecting hazardous substances such as aflatoxin, botulinum toxin, ricin, Shiga toxin, and others.
Miroslav Pohanka
doaj   +1 more source

Potential use of oxygen as a metabolic biosensor in combination with T2*-weighted MRI to define the ischemic penumbra [PDF]

open access: yes, 2008
We describe a novel magnetic resonance imaging technique for detecting metabolism indirectly through changes in oxyhemoglobin:deoxyhemoglobin ratios and T2* signal change during ‘oxygen challenge’ (OC, 5 mins 100% O2). During OC, T2* increase reflects O2
Barrie Condon   +14 more
core   +1 more source

Construction of an Array of Antibody–Gold Nanoparticle Conjugates for Their Comparative Assessment on Multiplex Lateral Flow Test to Detect Mycotoxins

open access: yesProceedings
A multiplex lateral flow immuno-biosensor for rapid, simple, and ultrasensitive on-site quantification of aflatoxin B1, type B-Fumonisin, and zearalenone in food requires the conjugation of their anti-toxin antibodies to the gold nanoparticles of various
Bilal Javed, Vinayak Sharma, Furong Tian
doaj   +1 more source

High-Speed Lateral Flow Strategy for a Fast Biosensing with an Improved Selectivity and Binding Affinity

open access: yesSensors, 2018
We report a high-speed lateral flow strategy for a fast biosensing with an improved selectivity and binding affinity even under harsh conditions. In this strategy, biosensors were fixed at a location away from the center of a round shape disk, and the ...
Dong Guk Cho   +6 more
doaj   +1 more source

A Fast and Sensitive Quantitative Lateral Flow Immunoassay for Cry1Ab Based on a Novel Signal Amplification Conjugate

open access: yesSensors, 2012
A novel lateral flow immunoassay (LFIA) signal amplification strategy for the detection of Cry1Ab based on amplification via a polylysine (PL) chain and biotin-streptavidin system (BSAS) is described.
Jian Wu, Chunxiang Chen
doaj   +1 more source

Lateral flow (immuno)assay: its strengths, weaknesses, opportunities and threats. A literature survey [PDF]

open access: yes
Lateral flow (immuno)assays are currently used for qualitative, semiquantitative and to some extent quantitative monitoring in resource-poor or non-laboratory environments.
Amerongen, A., van   +2 more
core   +1 more source

A Surface‐engineered Microfluidic Device for Antibody‐Mediated Negative Selection of High‐Quality Sperm for Assisted Reproduction

open access: yesAdvanced Functional Materials, EarlyView.
This study reports a microfluidic device with a functionalized surface utilizing a polyoxazoline coating and covalently immobilized gold nanoparticles and anti‐phosphatidylserine antibody. The device efficiently eliminates pre‐apoptotic and apoptotic spermatozoa and yields sperm with substantially improved quality and low DNA damage, offering a simple ...
Soraya Rasi Ghaemi   +5 more
wiley   +1 more source

Shiga Toxin Detection Methods : A Short Review [PDF]

open access: yes, 2013
The Shiga toxins comprise a family of related protein toxins secreted by certain types of bacteria. Shigella dysenteriae, some strain of Escherichia coli and other bacterias can express toxins which caused serious complication during the infection. Shiga
González-Aguilar, G.   +1 more
core  

Self‐Sintering Ionogel Binder for Flexible, Recyclable, and Healable Printed Giant Magnetoresistive Sensors

open access: yesAdvanced Functional Materials, EarlyView.
ABSTRACT Electronic waste has emerged as a major environmental challenge, driven by the massive consumption and a limited lifetime of modern electronic devices, stimulating the development of sustainable electronics. Here, an all‐biomaterial gelatin‐choline‐citric acid ([Ch][CA]) ionogel is developed as an active binder to realize self‐sintered ...
Lin Guo   +10 more
wiley   +1 more source

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