Electron-rich anilines as cleavable linkers for peptides.

We report the development of a new electron-rich aniline (ERA)-based cleavable linker. Anilines can be incorporated into peptides during SPPS and are stable to most reaction conditions. ERA-containing peptides can be cleaved rapidly in the presence of oxidants, such as DDQ, CAN, and NaIO, in 30 min at room temperature.

A method of calculating surface energies for asymmetric slab models.

Many essential chemical processes, such as adsorption and catalysis, take place at the surface of a solid material. Hence, accurately determining the energy of a solid surface provides crucial information about the material's potential utility for such processes. The standard method of calculating surface energy yields good approximations for solids that, upon cleavage, expose identical surface terminations (symmetric slabs) but suffers critical shortcomings when applied to the multitude of materials that expose atomically different terminations (asymmetric slabs) due to the inaccurate assumption that the two terminations exhibit exactly the same energy.

Effects of Coadsorbed Water on the Heterogeneous Photochemistry of Nitrates Adsorbed on TiO.

Nitric acid, a well-known sink of NO gases in the atmosphere, has been found to be photoactive while adsorbed on tropospheric particles. When adsorbed onto semiconductive metal oxides, nitrate's photochemical degradation can be interpreted as a photocatalytic process. Yet, the photolysis of nitrate ions on the surface of aerosols can also be initiated by changes in the symmetry of the ion upon adsorption.

Resting energy expenditure in male athletes with a spinal cord injury.

Objective: To investigate whether there are differences in the resting energy expenditure (REE) and body composition of athletes with a spinal cord injury (SCI) compared to active able-bodied controls.

Design: In this cross sectional study, male athletes with a SCI were compared to active able-bodied controls matched for age, stretch stature and body mass. In addition, the accuracy of standard REE prediction equations in estimating REE was assessed.