Recommended Practices for the Electrochemical Recovery of Cobalt from Lithium Cobalt Oxide: A Case Study of the Choline Chloride:Ethylene Glycol Deep Eutectic Solvent.

We recommend best practices for the recovery of cobalt from LiCoO (LCO) lithium-ion battery (LIB) cathodes by (i) leaching using green deep eutectic solvents (DES) and (ii) subsequent electrodeposition, through a case study of the choline chloride (ChCl):ethylene glycol (EG) DES. DES physical properties (conductivity, viscosity, and surface tension) were tailored by varying the composition between mole ratios of 1 : 2 and 1 : 5 (ChCl:EG). Examined along with leaching process parameters (temperature, duration), increasing the fraction of hydrogen bond donors (HBDs) decreased DES surface tension and enhanced leaching.

Investigating the impact of COVID-19 on user perception for deriving policies and intervention areas for urban bus service in India.

The paper aims to investigate the impact of COVID-19 pandemic on the perception of travelers and identify new policies and intervention areas for improving urban bus service. This was carried out based on the perception data collected from travelers in the years 2018 (before pandemic) and 2020(in post lockdown scenario). Data was collected from the state of Kerala, India, and Importance-Satisfaction Analysis (ISA) with fuzzy c-means clustering was carried out to identify improvement areas for both scenarios.

CoO-Impregnated NiO-YSZ: An Efficient Catalyst for Direct Methane Electrooxidation.

CoO-impregnated NiO-YSZ (yttria-stabilized zirconia) is a possible electrocatalyst for direct methane electrooxidation with both high catalytic activity and the ability to mitigate coking. The physical and electrochemical properties of CoO-impregnated NiO-YSZ anodes are investigated and benchmarked against NiO-YSZ and CeO-impregnated NiO-YSZ anodes. The following methane electrooxidation activity trend: CoO-impregnated NiO-YSZ > CeO-impregnated NiO-YSZ > NiO-YSZ with (exchange current density) values of 88, 83, and 2 mA cm, respectively, is obtained in the high overpotential region.

Reconstruction of infra orbital rim with rib cartilage.

Maxillo Mandibular injuries are most common through road traffic accident. The defects and deformities are usually prominent in case of facial injuries. The ultimate aim of recontouring and reconstruction of the facial defect is to achieve the maximum functional as well as esthetic part of the face.

Clinicopathological Features and Predictive Factors for Colorectal Cancer Outcome in the Kingdom of Saudi Arabia.

Background/aims: Colorectal cancer (CRC) is the most frequent cancer and a leading cause of cancer death in the Kingdom of Saudi Arabia (KSA). To date, no nationwide screening programs have been adopted. This prospective, longitudinal study investigated factors influencing the outcome of CRC in Saudi patients.