The sedimentation and diffusion coefficients have been determined for Hemophilus influenzae transforming activity and DNA using P(32)-labeled DNA. The methods employed the Spinco fixed boundary separation cell for measurements of the sedimentation coefficient and the Northrop-Anson diffusion cell to determine the diffusion coefficient. There was a very close correlation between the amount of DN...

Two dimensional quantitative structure activity relationship (2D-QSAR) study was performed on B-ring trifluoromethylated chromenone (flavonoid) analogues as anticancer agents. This study was performed with 25 compounds (data set) using random and manual data selection methods for the division of the data set into training and test set. Multiple linear regression analysis coupled with stepwise v...

The problem I am going to deal with has been restricted mostly to the influence of the potential difference in the diffuse double layer. The principal theory of Frumkin is based on two ideas. 1. The activity of the reacting particle in the outer Helmholtz plane (in the present way of speaking) differs from its value in the bulk of the solution as the energy necessary for the transfer of this pa...

caspase-3, one of the dominant effectors caspases, is activated in almost every model of apoptosis with various signaling pathways. hence, inhibition of caspase-3 has become an attractive target in the treatment of neurodegenerative diseases. caspase-3 inhibitory activities of some 1,2-benzisothiazol-3-one derivatives were modeled by quantitative structure–activity relationship (qsar) using ste...

A simple method for the direct determination of the air-loop volume in a RAD7 system as well as the radon partition coefficient was developed allowing for an accurate measurement of the radon activity in any type of water. The air-loop volume may be measured directly using an external radon source and an empty bottle with a precisely measured volume. The partition coefficient and activity of ra...

abstract study on photosynthetic and enzym activity changes in lettuce under cadmium stress has been done in greenhouse. of zhejang university in chine the experimental design was a crd factorial design organized in hydroponic system with 7 replications. cadmium was added to nutrient solution in cdcl2 in three concentrations (0, 2, 4 mg/l). stomatal photosynthetic factors (transpiration, stomat...