A linearly polarized AC-driven perovskite light emitting device with nanoscale metal contact.

Electroluminescent (EL) devices consisting of a single metal-semiconductor contact and a gate effect structure have garnered significant attention in the field of perovskite light-emitting devices. This interest is largely due to the thermal stability of the active layer and the simplicity of the device structure. However, the application of these devices in large-area light-emitting applications is hindered by the inherently low carrier mobility in perovskite materials.

High definition transcranial direct current stimulation as an intervention for cognitive deficits in Alzheimer's dementia: A randomized controlled trial.

Background: Recent disease-modifying treatments for Alzheimer's disease show promise to slow cognitive decline, but show no efficacy towards reducing symptoms already manifested.

Objectives: To investigate the efficacy of a novel noninvasive brain stimulation technique in modulating cognitive functioning in Alzheimer's dementia (AD).

Design: Pilot, randomized, double-blind, parallel, sham-controlled study SETTING: Clinical research site at UT Southwestern Medical Center PARTICIPANTS: Twenty-five participants with clinical diagnoses of AD were enrolled from cognition specialty clinics.

Impact of Dataset Size on 3D CNN Performance in Intracranial Hemorrhage Classification.

This study aimed to evaluate the effect of sample size on the development of a three-dimensional convolutional neural network (3DCNN) model for predicting the binary classification of three types of intracranial hemorrhage (ICH): intraparenchymal, subarachnoid, and subdural (IPH, SAH, SDH, respectively). During the training, we compiled all images of each brain computed tomography scan into a single 3D image, which was then fed into the model to classify the presence of ICH. We divided the non-hemorrhage quantities into 20, 30, 40, 50, 100, and 150 and the ICH quantities into 20, 30, 40, and 50.

Repair effects of offcut-carbon-fiber-powder-modified PU-PMMA copolymer on flexure-after-impact behaviors of composite laminate.

Polymer matrix composites are popular for their lightweight and high strength. Poly (methyl methacrylate) (PMMA), known for its transparency, can be toughened with polyurethane (PU) to expand its applications. This study further strengthened PU-PMMA by adding carbon fiber powder from offcut fabrics (oCFP), enhancing mechanical and adhesion properties.

Clinical Trial: Precise Administration of Sucralfate Powder in Prevention of Delayed Postpolypectomy Bleeding. A Randomized Controlled Trial.

Background/aims: Delayed postpolypectomy bleeding occurs in approximately 1% to 2% of all patients undergoing colonoscopic polypectomy, and this rate increases to 6% in patients with large (>2 cm) colon polyps. Sucralfate can protect the mucosa and promote its healing. This study was conducted to investigate whether colonoscopic spraying of sucralfate powder on polypectomy wounds can prevent delayed postoperative bleeding.