Studies on Alkali Decomposition of Rice Kernel : 4) Some alkali tests using "powder method"

Some notes on Alkali-He SEOP

The factor σ is called the interaction cross section and has units of area. It is the probability of a single interaction per unit target point density per unit target region length. A cross section is useful because it isolates the part of the interaction probability that is due to the mechanism of the interaction. An equivalent definition of cross section is the probability of interaction per...

Some notes on He polarimetry using alkali EPR

It is sometimes profitable to measure the longitudinal nuclear spin polarization of He. The method described here takes advantage of the vaporized alkali metal already present in a glass target cell. Long range and short range interactions with polarized He gas result in an “effective” magnetic field felt by the alkali metal atoms. A precisely detectable Zeeman shift in the alkali EPR frequency...

Alkali-Halide Chemiluminescence: Studies on the Fluctuation Bands from some Alkali (Li, Na, K)-Halogen (CI, Br, I)-Reactions

Molecular chemiluminescence spectra from selected alkali-halogen reactions are presented using a beam-gas arrangement operating with pressures between 10 -1 mtorr (single collision conditions) up to 10 mtorr in the reaction zone. Spectra are presented for the chemiluminescent reactions M2 + X 2 > M X * + MX, where M2 = K 2 , Na2 and X 2 = C12, Br2 ,12 . The MX* emitter is identified by comparis...

Studies on the Alkali–Silica Reaction Rim in a Simplified Calcium–Alkali–Silicate System

This work is intended to provide a better understanding about the properties and roles of the reaction rim in an alkali-silica reaction. A simplified calcium-alkali-silicate system was created to simulate the multiple interactions among reactive silica, alkaline solution and portlandite near the aggregate surface during the formation and evolution of the reaction rim in an alkali-silica reactio...

Degumming of silk yarn using alkali, enzyme and seidlitzia rosmarinus