Polycrystalline CoO-Bo Hybrid as Proficient Electrocatalyst for Addressing Kinetically Sluggish Anodic Reaction in Water Splitting.

Herein, we demonstrated that a polycrystalline cobalt oxide/borate (CoO-Bo) hybrid catalyst prepared by coprecipitation followed a simple annealing process with a viable boron source of less hazardous ammonium borate, an efficient electrocatalyst for the oxygen evolution reaction (OER). The borate species in the crystalline cobalt oxide lattice provides a tunable polycrystalline morphology with a defect-rich lattice and numerous grain boundaries in the CoO-Bo hybrid electrocatalyst, which significantly boosts the OER activity compared to the crystalline counterparts of CoO and precious IrO in a harsh alkaline electrolyte (1 M KOH). The borate modulated CoO-Bo achieves a 10 mA/cm geometrical current density for the OER with a very low overpotential (η) of 271 mV and small Tafel slope of 34 mV dec, in an inert glassy carbon (GC) support, while only requiring η of 267 and 32 mV dec in a 3D nickel foam (NF) support at the same current density.

A novel cricoid pressure sensor device enhances the efficacy of oesophageal occlusion during Sellick's manoeuvre: A randomised controlled trial.

Background: The inability to measure the force applied during cricoid pressure is an important limitation in clinical practice. We developed a novel device to measure this force and provide real-time feedback to the operator.

Objectives: To test the hypothesis of superior oesophageal occlusion during cricoid pressure when guided by the novel device as compared with conventional practice.

Effect of pre-operative patient anxiety on post-spinal shivering during elective cesarean delivery: a prospective observational study.

Background: Shivering after spinal anesthesia is common during cesarean delivery (CD), and is thought to be primarily a thermoregulatory response. By inducing autonomic changes, pre-operative anxiety could alter the functioning of the thermoregulatory center, hence modifying the incidence and severity of obstetric post-spinal shivering. This prospective observational study was conducted to explore the relationship between pre-operative anxiety and obstetric post-spinal shivering.

Towards Enhancing Low Vision Usability of Data Charts on Smartphones.

The importance of data charts is self-evident, given their ability to express complex data in a simple format that facilitates quick and easy comparisons, analysis, and consumption. However, the inherent visual nature of the charts creates barriers for people with visual impairments to reap the associated benefts to the same extent as their sighted peers. While extant research has predominantly focused on understanding and addressing these barriers for blind screen reader users, the needs of low-vision screen magnifer users have been largely overlooked.