Chiral effects at the metal center in Fe(III) spin crossover coordination salts.

Evidence of chirality was observed at the Fe metal center in Fe(III) spin crossover coordination salts [Fe(qsal)][Ni(dmit)] and [Fe(qsal)](TCNQ)from x-ray absorption (XAS) spectroscopy at the Fe 2pcore threshold. Based on the circularly polarized XAS data, the x-ray natural circular dichroism for [Fe(qsal)][Ni(dmit)] and [Fe(qsal)](TCNQ)is far stronger than seen for [Fe(qsal)]Cl suggesting this natural circular dichroism signature is a ligand effect rather than a result of just a loss of octahedral symmetry on the Fe core. The larger the chiral effects in the Fe 2p core to bound XAS, the greater the perturbation of the Fe 2pto 2pspin-orbit splitting seen in the XAS spectra.

A fully contained sample holder capable of electron-yield detection at soft X-ray energies.

A holder has been developed that enables electron yield-detected soft X-ray spectroscopy of fully contained samples at low temperature. Crucially, this design uses elements of the sample containment to collect ejected electrons, removing the need to expose samples directly to the vacuum environment of the spectrometer. The design is modular and should be adaptable to a number of different endstation configurations, enabling spectroscopy of air-sensitive, radioactive and vacuum-sensitive (biological) samples.

Effect of egg consumption on early childhood development: Evidence from study.

Objective: Recent studies have shown that inclusion of eggs in young children's diet can help meet nutritional requirements associated with cognitive development. This study aims to investigate the effect of egg consumption on Early Childhood Development (ECD) using Ages and Stages Questionnaire-3(ASQ-3) in Burkina Faso.

Design: The study presented here uses data collected during a follow-up of the -a 3 arm clustered randomized controlled trial (RCT), conducted roughly four months after the end of the RCT.

Rapid test for hepatitis B core-related antigen to identify people living with hepatitis B having high viral load in Cameroon.

This study presents a retrospective assessment of the diagnostic performance of the newly developed hepatitis B core-related antigen rapid diagnostic test (HBcrAg-RDT) in detecting plasma samples with elevated hepatitis B virus (HBV) DNA levels (≥200,000 IU/ml) in Yaoundé, Cameroon. Samples were collected consecutively from treatment-naïve adults living with HBV between January 1, 2021, and June 30, 2023. Analyzing 146 samples from participants with a median age of 36 years, the HBcrAg-RDT exhibited a sensitivity of 97.