Perfecting the Solid State

Perfecting Kant's highest good

Methanol synthesis catalyst manufacturing using the green solid-state method

In this research study, methanol synthesis catalysts were manufactured with various mole ratios of metal carbonates (zinc, copper and aluminum carbonate) and ammonium hydrogen carbonate via a green solid-state method that employed a ball mill apparatus. Some parameters for the catalyst preparation, such as Al mole percent, Cu/Zn mole ratio, rotations milling speeds and aging time, were optimize...

Perfecting peptide priming

Tumors can avoid immune destruction despite being invaded by tumor-specific CD8 ϩ T cells. On page 1257, Bronte et al. describe one way that prostate tumors subdue T cells— they make two enzymes that combine forces to cripple T cell signaling components. Tumors use a variety of tactics to avoid attack by cytotoxic CD8 ϩ T cells; one is to establish an inhospitable environment that inhibits T ce...

Photodimerization in the Solid State

Following a brief historical review of solid-state photochemistry current research is discussed under four parallel headings: first, analysis of the topochemical postulate according to which the course of the solid-state reaction and the stereochemistry of the photodimer (if any) can be predicted from the configuration and nearest-neighbour geometry of closest monomer molecules in the crystal l...

The Stability Studies of Penicillin and Ampicillin following ?-Irradiation in the Solid State

The effect of 10 and 25 kGy ?-irradiation on penicillin G plus procaine and sodium ampicillin has been assessed by different chemical and microbiological analytical methods. According to the chemical results obtained, the antibiotics showed a slight reduction in doses applied but the microbiological assays revealed that the activity of irradiated antibiotics did not reduce. Microbiological stud...