Background: This study examined the one year prospective associations between adolescent social self-control and drug outcomes (cigarette use, alcohol use, marijuana use, hard drug use, and problem drug use) among adolescents from regular and continuation high schools. In our previous cross-sectional study, poor social self-control was found to be associated with higher drug use, controlling fo...

Investigations of polymerization rates in an acrylamide-based photopolymer are presented. The polymerization rate for acrylamide and methylenebisacrylamide was determined by monitoring the changes in the characteristic vibrational peaks at 1284 and 1607 cm(-1) corresponding to the bending mode of the CH bond and CC double bonds of acrylamide and in the characteristic peak at 1629 cm(-1) corresp...

We report here a nanospherical polymer consisting of methacrylic acid and N,N'-methylenebisacrylamide, which works as a metal-free magnetic resonance imaging (MRI) sensor for pH. The nanospherical polymer gave a lower signal T2-weighted MRI image with decreasing pH. In contrast, it had little effect on the T1-weighted MRI image.

N,N'-Methylenebisacrylamide (MBAA), which is an important raw material in a widely industrial area, was synthesized using convenient catalysts. The synthesized monomer was fully characterized by the elemental analysis, fourier transform infrared (FT-IR) spectroscopy, thermogravimetric analysis (TGA), 1H-NMR, 13C-NMR, GC/MS, and high performance liquid chromatography (HPLC) analysis. Six differe...