Pure red upconverted and near-infrared luminescence properties of Er -doped SnO nanocrystals for lighting applications.

Tin oxide (SnO ) nanocrystalline powders doped with erbium ion (Er ) in different molar ratios (0, 3, 5, and 7 mol%) were prepared using a solid-state reaction technique. These samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), ultraviolet-visible absorption, visible upconversion, and near-infrared luminescence techniques. XRD analysis revealed the tetragonal rutile structure of SnO and the average crystallite size was about 32 nm.

Depotentiation of associative plasticity is intact in Parkinson's disease with mild dyskinesia.

Objective: Depotentiation of homosynaptic plasticity of the primary motor cortex (M1) is impaired in patients with Parkinson's disease (PD) who have developed dyskinesias. In this exploratory study, we tested whether this holds true for heterosynaptic plasticity induced by paired associative stimulation (PAS).

Methods: Dyskinetic (n=11) and Non-dyskinetic (n=11), levodopa-treated PD patients were tested in M1 with PAS alone, PAS preceded by continuous theta-burst stimulation of the cerebellum (cTBS-PAS) as a method to evoke a larger plastic response in M1, and each of these two interventions followed by a depotentiation protocol (cTBS) to M1.

Plastic responsiveness of motor cortex to paired associative stimulation depends on cerebellar input.

Objective: The extent of plastic responses of motor cortex (M1) to paired associative stimulation (PAS) varies among healthy subjects. Continuous theta-burst stimulation (cTBS) of cerebellum enhances the mean PAS-induced plasticity in groups of healthy subjects. We tested whether the initial status of Responder or Non -Responder to PAS, influenced the effect of cerebellar stimulation on PAS-induced plasticity.

Expression of CK 19 as a biomarker in early detection of oral squamous cell carcinoma.

Background: Increased mortality in oral squamous cell carcinoma (OSCC) had been attributed to delay in diagnosis. Lack of a specific marker to assess the malignant potential of premalignant lesions is thought to be one of the reasons for late detection. Expression of Cytokeratin 19, which is widely used as an odontogenic epithelial marker had been reported in OSCC.

Green Synthesis of Cr Doped CaIn₂O₄-Carbon Hybrid Nanostructure and Its Light Absorption and Emission Properties.

In this research article, we have used a novel route for synthesis of a greenish phosphor C-CaIn₂O₄ doped with Cr ions using green plant (aloe vera gel) and measured its light absorption and emission properties. Our main aim was to enhance the light absorption and emission properties of undoped C-CaIn₂O₄ in order to widen its applications. The introduction of CrO₃ ions can produce Cr ion defects that favor charge balance in Cr:C-CaIn₂O₄ to facilitate its photoluminescence.