The throughput of the injection molding process is restricted by cooling time each cycle which accounts for three-fourths time. Manufacturing molds out copper or alloys can reduce because their high thermal conductivity, but mold life reduced has much lower hardness and strength than traditional materials such as steels. By layering steel onto using directed energy deposition, advantages both b...

We report a general strategy for designing and synthesizing inorganic nanostructures with arbitrarily prescribed three-dimensional shapes. Computationally designed DNA strands self-assemble into a stiff "nanomold" that contains a user-specified three-dimensional cavity and encloses a nucleating gold "seed." Under mild conditions, this seed grows into a larger cast structure that fills and thus ...

Dictyostelid cellular slime molds (dictyostelids) are singlecelled, eukaryotic, phagotrophic bacterivores usually present and often abundant in terrestrial ecosystems (Raper, 1984). These organisms represent a normal component of the microflora in soils and apparently play a role in maintaining the natural balance that exists between bacteria and other microorganisms in the soil environment. Fo...

The ‘‘modern synthesis’’ of evolutionary biology, first formulated in the early 20th century, combined the ideas of Mendelian genetics and Darwinian evolution to create an outline for evolutionary theory that stressed the central role of genes in evolutionary processes. Of the genetic changes that drive evolution, the earliest to be studied were in proteins with familiar and prominent roles in ...

Analyses completed by: M. McGraw Selected References Meklin, T. M., R. A. Haugland, T. Reponen, M. Varma, Z. Lummus, D. Bernstein, L. J. Wymer and S. J. Vesper. 2004. Quantitative PCR analysis of house dust can reveal abnormal mold conditions. Journal of Environmental Monitoring 6:615-620. Meklin T et al. 2007. Comparison of mold concentrations quantified by MSQPCR in indoor and outdoor air sam...

Animals acquire an understanding of the world through experience and instruction. If we touch a hot stove, we burn ourselves and learn to keep our fingers away from glowing red coils. Alternatively, we can avoid the drama of direct experience by heeding the warnings of our parents. Both options are effective and help to guide our future behaviors. And until now, both were believed to require a ...

The use of low-energy femtosecond laser beam combined with chemical etching has been proven to be an efficient method to fabricate three-dimensional structures in fused silica. For high-volume application, this technology--like other serial processes--suffers from a moderate production rate. Here, we show that femtosecond laser can also be employed to fabricate silica molds and other patterned ...

Aeroallergens continue to have a key role in the pathogenesis of asthma and allergic diseases and have recently received increased attention in medical research throughout the world. The prevalence of aeroallergens vary in different regions, depending on the type of climate. The aim of the present study was to determine prevalence of the sensitivity to aeroallergens among patients with asthma a...