The effect of Cu addition on the soft magnetic properties of Fe­Zr­Si amorphous alloy was investigated by X-ray analysis, TEM observation, and B-H curve tracer. As a melt-spun amorphous ribbon sample was annealed above the crystallization onset temperature, very fine ¡-Fe particles smaller than 315 nm were precipitated and uniformly distributed in an amorphous matrix. Cu addition to Fe­Zr­Si am...

By detecting and quantitatively monitoring amplified DNA as PCR progresses, real-time PCR (quantitative or qPCR) instruments provide a robust approach for gene expression, genotyping, copy number variation, mutation screening, and methylation analysis. Data quality and reproducibility are governed by how robust a real-time PCR instrument’s thermal and optical systems are, with precise thermal c...

although the solubility of oxygen in molten aluminum alloys is said to be negligible, the fresh surface of the melt oxidizes quickly in the air and an oxide film is formed on the melt surface. oxide-metal-oxide sandwich technique is a method for the study of short-time surface oxide films. in this research, air was blown at 0.5 atmosphere into the melts of al-1mg and al-6mg alloys by means of a...

Lunar meteorites represent a more random sampling of lunar material than the Apollo or Luna collections and, as such, lunar meteorite impact melt ages are the most important data in nearly 30 years with which to reexamine the lunar cataclysm hypothesis. Within the lunar meteorite breccias MAC 88105, QUE 93069, DaG 262, and DaG 400, seven to nine different impact events are represented with 40Ar...

We analyze the parameterization of sub-grid scale variability in snow accumulation and melt models from a physical perspective considering the causes of the variability and the effect on snowpack energy exchange. The source of temporal changes in spatial variance of snow water equivalent is the covariance between snow water equivalent and the accumulation or melt rate at each point. Variability...