The discovery of slow hot carrier cooling in hybrid organic–inorganic lead halide perovskites (HOIPs) has provided exciting prospects for efficient solar cells that can overcome the Shockley–Queisser limit. Questions still loom over how electron-phonon interactions differ from traditional polar semiconductors. Herein, coupling (EPC) strength common perovskite films (MAPbBr3, MAPbI3, CsPbI3, and...

Little is known about the current health status of US metal and nonmetal (MNM) miners, in part because no health surveillance systems exist for this population. The National Institute for Occupational Safety and Health (NIOSH) is developing a program to characterize burden of disease among MNM miners. This report discusses current knowledge and potential data sources of MNM miner health. Recent...

Molecular dynamics simulations have been performed to study the translocation of single-stranded (ss)-DNA through the nanoscale gap between the nanoscale electrodes of a proposed genomic sequencing device. Using a fixed gap width between the electrodes and a small sample segment of ss-DNA as initial starting points in this project, the effect of applied electric fields on translocation velocity...

The bulk-representative low-energy spectrum of Sr2RuO4 can be directly measured by angle-resolved photoemission. We find that the quasiparticle spectral line shape of Sr2RuO4 is sensitive to both temperature and momentum. Along the (0,0)-(pi,0) direction, both gamma and beta bands develop a sharp quasiparticle peak near k(F) at low temperatures, but as the temperature increases the spectra quic...

more recently medical chemistry research has been focused on proteins that drive and controlcell cycle progression. among them, the cyclin dependent kinases (cdk’s) are a group ofserine/threonine kinases, which rule the transition between successive stages of the cell cycle. theactivity of cdk’s is regulated by multiple mechanisms, including binding to cyclins, which is a broadclass of positive...

During the past decades, aqueous rechargeable batteries have been receiving much attention on account of merits cost efficiency, high safety, and environmental benignity. Compared to metal-ions (such as Li+, Na+, K+, Mg2+, Zn2+, Al3+ etc.) charge carriers in ion batteries, nonmetal not only form covalent–ionic bonds framework, but also act reversible redox centers. Moreover, advantages low cost...

In this work, recent theoretical investigations by the authors in the area of oxide multilayers are briefly reviewed. The calculations were carried out using model Hamiltonians and a variety of non-perturbative techniques. Moreover, new results are also included here. They correspond to the generation of a metallic state by mixing insulators in a multilayer geometry, using the Hubbard and doubl...

Purpose. To analyze the stress distribution in an endodontically treated maxillary central incisor restored with various post-core systems and assess the benefit of ferrule using finite element analysis. Material and Methods. Twelve models with metal ceramic crown were created based on the combination of three types of post-core systems (titanium post-composite resin core, nickel-chromium post-...