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An electrochemical sensor based on core-shell nanostructured copper sulfide@Prussian blue composites (CuS@PB) was investigated for ascorbic acid (AA) detection. CuS nanoparticles (NPs) were prepared by a hydrothermal method, then core-shell CuS@PB nanohybrid was fabricated through in situ synthesis of PB on CuS NPs. Taking advantage of their enhanced properties, a novel electrochemical AA sensor was developed by drop-coating of CuS@PB nanohybrid on glassy carbon electrode (GCE). As expected, electrochemical observations showed that CuS@PB/GCE presented higher performance for electrocatalytic of AA than PB/GCE, with wide linear range (5-3875 μM, R=0.9997), fast response time (<3 s), high sensitivity (256.91 μAmM-1cm-2), as well as low limit of detection (LOD) (0.24 μM at S/N=3). Additionally, CuS@PB/GCE showed excellent reproducibility, storage stability, anti-interference and selectivity. The application of CuS@PB/GCE sensor for AA assay in beverage samples achieved satisfactory results, demonstrating a great prospect for quantitative detection to AA of various fields.
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A self-sacrificing catalytic method is described for the preparation of magnetic core/dual-functional-shell nanocomposites composed of magnetite, gold and Prussian Blue (type FeO@Au-PB). Two reaction ...
An electrochemical biosensor for microRNA was constructed on the basis of direct growth of electroactive Prussian Blue (PB) on graphene oxide (GO). A mercapto-modified probe DNA that is complementary ...
A novel hierarchical core-shell nanocolumn array, with NiCoS hollow nanowire (NiCoS H-NW) as the core and NiCoP nanosheet (NiCoP NS) as the shell, has been directly synthesized on nickel foam (NF) as ...
A novel molecularly imprinted polymer-capped acrylated nitrogen doped graphene quantum dots and bimetallic Au/Ag core-shell was synthesized to serve as a sensing nano-hybrid film for the detection of ...
Non-lithium energy storage devices, especially sodium ion batteries, are drawing attention due to insufficient and uneven distribution of lithium resources. Prussian blue and its analogs (Prussian blu...
The Double Sensor examined in this trial was developed by Dräger Company and is a novel non- invasive device for assessing core body temperature. In a preliminary research investigators h...
This study will be a prospective, non-randomized evaluation of the Tritanium® Primary Acetabular Shell for primary total hip replacement (THR) with a cementless application in a consecuti...
The present study aims to assess the accuracy of the SpotOn™ Zero-heat-flux-thermometry sensor in measuring core temperature in the paediatric population in the perioperative period.
Use of cutaneous electrochemical conductance for preclinical screening of small-caliber nerve fibers
Patients having radiotherapy to their head and neck wear an immobilisation shell to prevent patient movement and improve treatment accuracy. These shells tend to cover the face and have th...
The reaction of potassium ferrocyanide with ferric iron to yield a dark blue precipitate at the sites of the ferric iron. Used to determine ferric iron in tissues, particularly in the diagnosis of disorders of iron metabolism.
A scanning probe microscopy technique that uses an ultramicroelectrode as the scanning probe that simultaneously records changes in electrochemical potential as it scans thereby creating topographical images with localized electrochemical information.
Usually a benign tumor, that commonly presents as a solitary blue nodule with spindled MELANOCYTES covered by smooth SKIN. Several variants have been identified, one variant being malignant. The blue color is caused by large, densely packed melanocytes deep in the DERMIS of the nevus. In CHILDREN, they usually occur on the BUTTOCKS and LUMBOSACRAL REGION and are referred to as cellular blue nevi. Malignant blue nevi are more commonly found on the SCALP.
A condition due to a dietary deficiency of ascorbic acid (vitamin C), characterized by malaise, lethargy, and weakness. As the disease progresses, joints, muscles, and subcutaneous tissues may become the sites of hemorrhage. Ascorbic acid deficiency frequently develops into SCURVY in young children fed unsupplemented cow's milk exclusively during their first year. It develops also commonly in chronic alcoholism. (Cecil Textbook of Medicine, 19th ed, p1177)
A compound consisting of dark green crystals or crystalline powder, having a bronze-like luster. Solutions in water or alcohol have a deep blue color. Methylene blue is used as a bacteriologic stain and as an indicator. It inhibits GUANYLATE CYCLASE, and has been used to treat cyanide poisoning and to lower levels of METHEMOGLOBIN.
Within medicine, nutrition (the study of food and the effect of its components on the body) has many different roles. Appropriate nutrition can help prevent certain diseases, or treat others. In critically ill patients, artificial feeding by tubes need t...
An assay is an analytic procedure for qualitatively assessing or quantitatively measuring the presence or amount or the functional activity of a target entity. This can be a drug or biochemical substance or a cell in an organism or organic sample. ...