β Scribed by Howard C. Haas; Ruby L. Macdonald
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
The effectiveness of molecular size discrimination in liquid polyacrylamide-agar mixed-gel electrophoresis is shown to depend on the polymer chain length. This relationship seems to be mediated by the intrinsic viscosity of the polymer. Possible implications for cross-linked gels are discussed.
The effects of high-shear processing and thermal exposure on the molecular weight and solution viscosity stability of selected polymers were studied. Aqueous solutions of two molecular weight grades of hydroxyethyl cellulose (HEC) were subjected to high-shear rates using a high-shear mixer and two c
We read with interest the abstract by Olson et al. (I). They showed that gabapentin improves rigidity, bradykinesia, and tremor in parkinsonism and Parkinson's disease (PD). We administered gabapentin, 900 mg per day, in an open trial to seven nondemented patients with PD who had painful dystonia,
## Abstract The protonation and complex formation of the new ligand 3,3β², 5,5β²βtetramethylβdipyrrometheneβ4,4β²βdicarboxylate in aqueous solutions was investigated by alkalimetric titrations and spectrophotometric measurements (25Β°, I = 1 (KNO~3~)). The p__K__ values for the Nο£ΏH groups are 8.03 and
Size distribution information was used to monitor time-dependent agglomeration in aqueous solutions of a high molecular mass polyacrylamide. Although the individual polymer molecules had diameters in the order of 0.4 m, a high number of agglomerates were seen that may contain four to six polymer cha