Latrine use practices and predictors in Rural Vietnam: Evidence from Giong Trom district, Ben Tre.

Purpose: Rural Vietnam has been subject to continuous hygienic latrine interventions since the mid-1990s. However, most have concentrated on improving coverage rather than use. It is thus important to examine rural hygienic latrine use rates and the predictors impacting them.

A first-principles investigation of various gas (CO, H2O, NO, and O2) absorptions on a WS2 monolayer: stability and electronic properties.

Using first-principles calculations, we investigate the interactions between a WS2 monolayer and several gas molecules (CO, H2O, NO, and O2). Different sets of calculations are performed based on generalized-gradient approximations (GGAs) and GGA + U ([Formula: see text] eV) calculations with D2 dispersion corrections. In general, GGA and GGA + U establish good consistency with each other in terms of absorption stability and band gap estimations.